File:  [LON-CAPA] / loncom / interface / lonprintout.pm
Revision 1.658: download - view: text, annotated - select for diffs
Mon May 29 22:43:07 2017 UTC (7 years ago) by raeburn
Branches: MAIN
CVS tags: HEAD
- Extra parentheses needed for inline use of ternary operator.

    1: # The LearningOnline Network
    2: # Printout
    3: #
    4: # $Id: lonprintout.pm,v 1.658 2017/05/29 22:43:07 raeburn Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: # http://www.lon-capa.org/
   26: #
   27: #
   28: package Apache::lonprintout;
   29: use strict;
   30: use Apache::Constants qw(:common :http);
   31: use Apache::lonxml;
   32: use Apache::lonnet;
   33: use Apache::loncommon;
   34: use Apache::inputtags;
   35: use Apache::grades;
   36: use Apache::edit;
   37: use Apache::File();
   38: use Apache::lonnavmaps;
   39: use Apache::admannotations;
   40: use Apache::lonenc;
   41: use Apache::entities;
   42: use Apache::londefdef;
   43: # use Apache::structurelags;	# for language management.
   44: 
   45: use File::Basename;
   46: 
   47: use HTTP::Response;
   48: use LONCAPA::map();
   49: use Apache::lonlocal;
   50: use Carp;
   51: use LONCAPA;
   52: 
   53: 
   54: my %perm;
   55: my %parmhash;
   56: my $resources_printed;
   57: 
   58: # Global variables that describe errors in ssi calls detected  by ssi_with_retries.
   59: #
   60: 
   61: my $ssi_error;			# True if there was an ssi error.
   62: my $ssi_last_error_resource;	# The resource URI that could not be fetched.
   63: my $ssi_last_error;		# The error text from the server. (e.g. 500 Server timed out).
   64: 
   65: #
   66: #  Our ssi max retry count.
   67: #
   68: 
   69: my $ssi_retry_count = 5;	# Some arbitrary value.
   70: 
   71: 
   72: #  Font size:
   73: 
   74: my $font_size = 'normalsize';	# Default is normalsize...
   75: 
   76: #----------------------------  Helper helpers. -------------------------
   77: 
   78: ## 
   79: # Filter function to determine if a resource is a printable sequence.
   80: #
   81: # @param $res -Resource to check.
   82: #
   83: # @return 1 - printable and a resource
   84: #         0 - either notm a sequence or not printable.
   85: #
   86: sub printable_sequence {
   87:     my $res = shift;
   88: 
   89:     # Non-sequences are not listed:
   90: 
   91:     if (!$res->is_sequence()) {
   92: 	return 0;
   93:     }
   94: 
   95:     # Person with pav or pfo can always print:
   96: 
   97:     if ($perm{'pav'} || $perm{'pfo'}) {
   98: 	return 1;
   99:     }
  100: 
  101:     if ($res->is_sequence()) {
  102: 	my $symb = $res->symb();
  103: 	my $navmap   = $res->{NAV_MAP};
  104: 
  105: 	# Find the first resource in the map:
  106: 
  107: 	my $iterator = $navmap->getIterator($res, undef, undef, 1, 1);
  108: 	my $first    = $iterator->next();
  109: 
  110: 	while (1) {
  111: 	    if ($first == $iterator->END_ITERATOR) { last; }
  112: 	    if (ref($first) && ! $first->is_sequence()) {last; }
  113: 	    $first = $iterator->next();
  114: 	}
  115: 
  116: 
  117: 	# Might be an empty map:
  118: 
  119: 	if (!ref($first)) {
  120: 	    return 0;
  121: 	}
  122: 	my $partsref = $first->parts();
  123: 	my @parts    = @$partsref;
  124: 	my ($open, $close) = $navmap->map_printdates($first, $parts[0]);
  125: 	return &printable($open, $close);
  126:     }
  127:     return 0;
  128: }
  129: 
  130: # BZ5209:
  131: #    Create the states needed to run the helper for incomplete problems from
  132: #    the current folder for selected students.
  133: #    This includes:
  134: #    -  A resource selector limited to problems (incompleteness must be
  135: #       calculated on a student per student basis.
  136: #    -  A student selector.
  137: #    -  Tie in to the FORMAT of the print job.
  138: #
  139: # States:
  140: #   CHOOSE_INCOMPLETE_PEOPLE_SEQ      - Resource selection.
  141: #   CHOOSE_STUDENTS_INCOMPLETE        - Student selection.
  142: #   CHOOSE_STUDENTS_INCOMPLETE_FORMAT - Format selection
  143: # Parameters:
  144: #    helper - the helper which already contains info about the current folder we can
  145: #             purloin.
  146: #    url    - Top url of the sequence
  147: # Return:
  148: #     XML that can be parsed by the helper to drive the state machine.
  149: #
  150: sub create_incomplete_folder_selstud_helper {
  151:     my ($helper, $map)  = @_;
  152: 
  153: 
  154:     my $symbFilter = '$res->shown_symb()';
  155:     my $selFilter   = '$res->is_problem()';
  156: 
  157: 
  158:     my $resource_chooser = &generate_resource_chooser('CHOOSE_INCOMPLETE_PEOPLE_SEQ',
  159: 						      'Select problem(s) to print',
  160: 						      'multichoice="1" toponly="1" addstatus="1" closeallpages="1"',
  161: 						      'RESOURCES',
  162: 						      'CHOOSE_STUDENTS_INCOMPLETE',
  163: 						      $map,
  164: 						      $selFilter,
  165: 						      '',
  166: 						      $symbFilter, 
  167: 						      '');
  168: 
  169:     my $student_chooser = &generate_student_chooser('CHOOSE_STUDENTS_INCOMPLETE',
  170: 						 'student_sort',
  171: 						 'STUDENTS',
  172: 						 'CHOOSE_STUDENTS_INCOMPLETE_FORMAT');
  173: 
  174:     my $format_chooser = &generate_format_selector($helper,
  175: 						'Format of the print job',
  176: 						'CHOOSE_STUDENTS_INCOMPLETE_FORMAT'); # end state.
  177: 
  178:     return $resource_chooser . $student_chooser . $format_chooser;
  179: }  
  180: 
  181: 
  182: # BZ 5209
  183: #     Create the states needed to run the helper for incomplete problems from
  184: #     the current folder for selected students.
  185: #     This includes:
  186: #     - A resource selector limited to problems.  (incompleteness must be calculated
  187: #       on a student per student basis.
  188: #     - A student selector.
  189: #     - Tie in to format for the print job.
  190: # States:
  191: #    INCOMPLETE_PROBLEMS_COURSE_RESOURCES - Resource selector.
  192: #    INCOMPLETE_PROBLEMS_COURSE_STUDENTS  - Student selector.
  193: #    INCOMPLETE_PROBLEMS_COURSE_FORMAT    - Format selection.
  194: #
  195: # Parameters:
  196: #   helper   - Helper we are creating states for.
  197: # Returns:
  198: #   Text that can be parsed by the helper.
  199: # 
  200: 
  201: sub create_incomplete_course_helper {
  202:     my $helper = shift;
  203: 
  204:     my $filter = '$res->is_problem() || $res->contains_problem() || $res->is_sequence() || $res->is_practice())';
  205:     my $symbfilter = '$res->shown_symb()';
  206:     
  207:     my $resource_chooser = &generate_resource_chooser('INCOMPLETE_PROBLEMS_COURSE_RESOURCES',
  208: 						      'Select problem(s) to print',
  209: 						      'multichoice = "1" suppressEmptySequences="0" addstatus="1" closeallpagtes="1"',
  210: 						      'RESOURCES',
  211: 						      'INCOMPLETE_PROBLEMS_COURSE_STUDENTS',
  212: 						      '',
  213: 						      $filter,
  214: 						      '',
  215: 						      $symbfilter,
  216: 						      '');
  217: 
  218:     my $people_chooser  = &generate_student_chooser('INCOMPLETE_PROBLEMS_COURSE_STUDENTS',
  219: 						    'student_sort',
  220: 						    'STUDENTS',
  221: 						    'INCOMPLETE_PROBLEMS_COURSE_FORMAT');
  222: 
  223:     my $format = &generate_format_selector($helper,
  224: 					   'Format of the print job',
  225: 					   'INCOMPLETE_PROBLEMS_COURSE_FORMAT'); # end state.
  226: 
  227:     return $resource_chooser . $people_chooser . $format;
  228: 
  229: 
  230: }
  231: 
  232: # BZ5209 
  233: #   Creates the states needed to run the print helper for a student
  234: #   that wants to print his incomplete problems from the current folder.
  235: # Parameters:
  236: #   $helper - helper we are generating states for.
  237: #   $map    - The map for which the student wants incomplete problems.
  238: # Returns:
  239: #   XML that defines the helper states being created.
  240: #
  241: # States:
  242: #   CHOOSE_INCOMPLETE_SEQ  - Resource selector.
  243: #
  244: sub create_incomplete_folder_helper {
  245:     my ($helper, $map) = @_;
  246: 
  247:     my $filter    = '$res->is_problem()';
  248:     $filter      .= ' && $res->resprintable() ';
  249:     $filter      .= ' && $res->is_incomplete() ';
  250: 
  251:     my $symfilter = '$res->shown_symb()';
  252: 
  253:     my $resource_chooser = &generate_resource_chooser('CHOOSE_INCOMPLETE_SEQ',
  254: 						      'Select problem(s) to print',
  255: 						      'multichoice="1", toponly ="1", addstatus="1", closeallpages="1"',
  256: 						      'RESOURCES',
  257: 						      'PAGESIZE',
  258: 						      $map,
  259: 						      $filter, '', 
  260: 						      $symfilter,
  261: 						      '');
  262: 
  263:     return $resource_chooser;
  264: }
  265: 
  266: 
  267: #  Returns the text neded for a student chooser.
  268: #  that text must still be parsed by the helper xml parser.
  269: # Parameters:
  270: #   this_state   - State name of the chooser.
  271: #   sort_choice  - variable to hold the sorting choice.
  272: #   variable     - Name of variable to hold students.
  273: #   next_state   - State after chooser.
  274: 
  275: 
  276: sub generate_student_chooser {
  277:     my ($this_state, 
  278: 	$sort_choice, 
  279: 	$variable, 
  280: 	$next_state) = @_;
  281:     my $result = <<CHOOSE_STUDENTS;
  282:   <state name="$this_state" title="Select Students and Resources">
  283:       <message><b>Select sorting order of printout</b> </message>
  284: 
  285:     <choices variable="$sort_choice">
  286:       <choice computer='0'>Sort by section then student</choice>
  287:       <choice computer='1'>Sort by students across sections.</choice>
  288:     </choices>
  289: 
  290:       <message><br /><hr /><br /> </message>
  291:       <student multichoice='1' 
  292:                variable="$variable" 
  293:                nextstate="$next_state" 
  294:                coursepersonnel="1" />
  295:   </state>
  296: 
  297: CHOOSE_STUDENTS
  298: 
  299:   return $result;
  300: }
  301: 
  302: # Generate the text needed for a resource chooser given the top level of
  303: # the sequence/page
  304: #
  305: # Parameters:
  306: #     this_state    - State name of the chooser.
  307: #     prompt_text   - Text to use to prompt user.
  308: #     resource_options - Resource tag options e.g.
  309: #                        "multichoice='1', toponly='1', addstatus='1'"
  310: #                     that control the selection and appearance of the
  311: #                     resource selector.
  312: #     variable      - Name of the variable to hold the choice
  313: #     next_state    - Name of the next state the helper should transition
  314: #                     to
  315: #     top_url       - Top level URL within which to make the selector.
  316: #                     If empty the top level sequence is shown.
  317: #     filter        - How to filter the resources.
  318: #     value_func    - <valuefunc> function.
  319: #     choice_func   - If not empty generates a <choicefunc> with this function.
  320: #     start_new_option 
  321: #                   - Fragment appended after valuefunc.
  322: #
  323: #
  324: sub generate_resource_chooser {
  325:     my ($this_state,
  326: 	$prompt_text,
  327: 	$resource_options,
  328: 	$variable,
  329: 	$next_state,
  330: 	$top_url,
  331: 	$filter,
  332: 	$choice_func,
  333: 	$value_func,
  334: 	$start_new_option)  = @_;
  335: 
  336:     my $result = <<CHOOSE_RESOURCES;
  337: <state name="$this_state" title="$prompt_text">
  338:     <resource variable="$variable" $resource_options
  339:               closeallpages="1">
  340:       <nextstate>$next_state</nextstate>
  341:       <filterfunc>return $filter;</filterfunc>
  342: CHOOSE_RESOURCES
  343:     if ($choice_func ne '') {
  344: 	$result .= "<choicefunc>return $choice_func;</choicefunc>";
  345:     }
  346:     if ($top_url ne '') {
  347: 	$result .=  "<mapurl>$top_url</mapurl>";
  348:     }
  349:     $result .= <<CHOOSE_RESOURCES;
  350:       <valuefunc>return $value_func;</valuefunc>
  351:       $start_new_option
  352:       </resource>
  353:     </state>
  354: CHOOSE_RESOURCES
  355:     return $result;
  356: }
  357: #
  358: #   Generate the helper XML for a code choice helper dialog:
  359: #
  360: # Paramters:
  361: #   $helper       - Reference to the helper.
  362: #   $state        - Name of the state for the chooser.
  363: #   $next_state   - Name fo the state to follow the chooser.
  364: #   $bubble_types - Populates the bubble sheet type dropt down.
  365: #   $code_selections - Provides set of code choices that have been used
  366: #   $saved_codes  - Provides the list of saved codes.
  367: #
  368: # Returns;
  369: #   The Xml of the code chooser.
  370: #
  371: sub generate_code_selector {
  372:     my ($helper,
  373: 	$state,
  374: 	$next_state,
  375: 	$bubble_types,
  376: 	$code_selections,
  377: 	$saved_codes) = @_;	# Unpack the parameters.
  378: 
  379:     my $result = <<CHOOSE_ANON1;
  380:   <state name="$state" title="Specify CODEd Assignments">
  381:     <nextstate>$next_state</nextstate>
  382:     <message><h4>Fill out one of the forms below</h4></message>
  383:     <message><br /><hr /> <br /></message>
  384:     <message><h3>Generate new CODEd Assignments</h3></message>
  385:     <message><table><tr><td><b>Number of CODEd assignments to print:</b></td><td></message>
  386:     <string variable="NUMBER_TO_PRINT_TOTAL" maxlength="5" size="5"  noproceed="1">
  387:        <validator>
  388: 	if (((\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}+0) < 1) &&
  389: 	    !\$helper->{'VARS'}{'REUSE_OLD_CODES'}                &&
  390:             !\$helper->{'VARS'}{'SINGLE_CODE'}                    &&
  391: 	    !\$helper->{'VARS'}{'CODE_SELECTED_FROM_LIST'} ) {
  392: 
  393: 	    return "You need to specify the number of assignments to print";
  394: 	}
  395:         if (((\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}+0) >= 1)  &&
  396:              (\$helper->{'VARS'}{'SINGLE_CODE'} ne '') ) {
  397:             return 'Specifying number of codes to print and a specific code is not compatible';
  398:         }
  399: 	return undef;
  400:        </validator>
  401:     </string>
  402:     <message></td></tr><tr><td></message>
  403:     <message><b>Names to save the CODEs under for later:</b></message>
  404:     <message></td><td></message>
  405:     <string variable="ANON_CODE_STORAGE_NAME" maxlength="50" size="20" />
  406:     <message></td></tr><tr><td></message>
  407:     <message><b>Bubblesheet type:</b></message>
  408:     <message></td><td></message>
  409:     <dropdown variable="CODE_OPTION" multichoice="0" allowempty="0">
  410:     $bubble_types
  411:     </dropdown>
  412:     <message></td></tr><tr><td colspan="2"></td></tr><tr><td></message>
  413:     <message></td></tr><tr><td></table></message>
  414:     <message><br /><hr /><h3>Print a Specific CODE </h3><br /><table></message>
  415:     <message><tr><td><b>Enter a CODE to print:</b></td><td></message>
  416:     <string variable="SINGLE_CODE" size="10">
  417:         <validator>
  418: 	   if(!\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}           &&
  419: 	      !\$helper->{'VARS'}{'REUSE_OLD_CODES'}                 &&
  420: 	      !\$helper->{'VARS'}{'CODE_SELECTED_FROM_LIST'}) {
  421: 	      return &Apache::lonprintout::is_code_valid(\$helper->{'VARS'}{'SINGLE_CODE'},
  422: 						      \$helper->{'VARS'}{'CODE_OPTION'});
  423: 	  } elsif (\$helper->{'VARS'}{'SINGLE_CODE'} ne ''){
  424: 	      return 'Specifying a code name is incompatible with specifying number of codes.';
  425: 	   } else {
  426: 	       return undef;	# Other forces control us.
  427: 	   }
  428:         </validator>
  429:     </string>
  430:     <message></td></tr><tr><td></message>
  431:         $code_selections
  432:     <message></td></tr></table></message>
  433:     <message><hr /><h3>Reprint a Set of Saved CODEs</h3><table><tr><td></message>
  434:     <message><b>Select saved CODEs:</b></message>
  435:     <message></td><td></message>
  436:     <dropdown variable="REUSE_OLD_CODES">
  437:         $saved_codes
  438:     </dropdown>
  439:     <message></td></tr></table></message>
  440:   </state>
  441: CHOOSE_ANON1
  442: 
  443:    return $result;
  444: }
  445: 
  446: #  Returns the XML for choosing how assignments are to be formatted 
  447: #  that text must still be parsed by the helper xml parser.
  448: # Parameters: 3 (required)
  449: 
  450: #   helper       - The helper; $helper->{'VARS'}->{'PRINT_TYPE'} used
  451: #                  to check if splitting PDFs by section can be offered.
  452: #   title        - Title for the current state. 
  453: #   this_state   - State name of the chooser.
  454: 
  455: sub generate_format_selector {
  456:     my ($helper,$title,$this_state) = @_;
  457:     my $secpdfoption;
  458:     unless (($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_for_anon')     ||
  459:             ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_for_anon_page') ||
  460:             ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'resources_for_anon')  ) {
  461:         $secpdfoption =  '<choice computer="sections">Each PDF contains exactly one section</choice>';
  462:     }
  463:     return <<RESOURCE_SELECTOR;
  464:     <state name="$this_state" title="$title">
  465:     <message><br /><big><i><b>How should the results be printed?</b></i></big><br /></message>
  466:     <choices variable="EMPTY_PAGES">
  467:       <choice computer='0'>Start each student\'s assignment on a new page/column (add a pagefeed after each assignment)</choice>
  468:       <choice computer='1'>Add one empty page/column after each student\'s assignment</choice>
  469:       <choice computer='2'>Add two empty pages/column after each student\'s assignment</choice>
  470:       <choice computer='3'>Add three empty pages/column after each student\'s assignment</choice>
  471:     </choices>
  472:     <nextstate>PAGESIZE</nextstate>
  473:     <message><hr width='33%' /><b>How do you want assignments split into PDF files? </b></message>
  474:     <choices variable="SPLIT_PDFS">
  475:        <choice computer="all">All assignments in a single PDF file</choice>
  476:        $secpdfoption
  477:        <choice computer="oneper">Each PDF contains exactly one assignment</choice>
  478:        <choice computer="usenumber" relatedvalue="NUMBER_TO_PRINT">
  479:             Specify the number of assignments per PDF:</choice>
  480:     </choices>
  481:     </state>
  482: RESOURCE_SELECTOR
  483: }
  484: 
  485: #-----------------------------------------------------------------------
  486: 
  487: # Computes an open and close date from a list of open/close dates for a resource's
  488: # parts.
  489: #
  490: # @param \@opens - reference to an array of open dates.
  491: # @param \@closes - reference to an array of close dates.
  492: #
  493: # @return ($open, $close) 
  494: #
  495: # @note If open/close dates are not defined they will be returned as undef
  496: # @note It is possible for there to be no overlap in which case -1,-1 
  497: #       will be returned.
  498: # @note The algorithm used is to take the latest open date and the earliest end date.
  499: #
  500: sub compute_open_window {
  501:     my ($opensref, $closesref) = @_;
  502: 
  503:     my @opens   = @$opensref;
  504:     my @closes  = @$closesref;
  505: 
  506:     # latest open date:
  507:     my $latest_open;
  508: 
  509:     foreach my $open (@opens) {
  510: 	if (!defined($latest_open) || ($open > $latest_open)) {
  511: 	    $latest_open = $open;
  512: 	}
  513:     }
  514:     # Earliest close:
  515: 
  516:     my $earliest_close;
  517:     foreach my $close (@closes) {
  518: 	if (!defined($earliest_close) || ($close < $earliest_close)) {
  519: 	    $earliest_close = $close;
  520: 	}
  521:     }
  522: 
  523:     # If no overlap...both are -1 as promised.
  524: 
  525:     if (($earliest_close ne '') && ($latest_open ne '')
  526: 	 && ($earliest_close < $latest_open)) {
  527: 	$latest_open  = -1;
  528: 	$earliest_close = -1;
  529:     }
  530:     
  531:     return ($latest_open, $earliest_close);
  532:   
  533: }
  534: 
  535: ##
  536: #  Determines if 'now' is within the set of printable dates.
  537: #
  538: #  @param $open_date - Starting date/timestamp.
  539: #  @param $close_date - Ending date/timestamp.
  540: #
  541: #  @return 0 - Not open.
  542: #  @return 1 - open.
  543: #
  544: sub printable {
  545:     my ($open_date, $close_date) = @_;
  546: 
  547: 
  548:     my $now = time();
  549: 
  550:     # Have to do a bit of fancy footwork around undefined open/close dates:
  551: 
  552:     if ($open_date && ($open_date > $now)) {
  553: 	return 0;
  554:     }
  555: 
  556:     if ($close_date && ($close_date < $now)) {
  557: 	return 0;
  558:     }
  559:     
  560:     return 1;
  561: 
  562: }
  563: 
  564: ##
  565: # Returns the innermost print start/print end dates for a resource.
  566: # This is done by looking at the start/end dates for its parts and choosing
  567: # the intersection of those dates.
  568: # 
  569: # @param res - lonnvamaps::resource object that represents the resource.
  570: #
  571: # @return (opendate, closedate)
  572: #
  573: # @note If open/close dates are not defined they will be returned as undef
  574: # @note It is possible for there to be no overlap in which case -1,-1 
  575: #       will be returned.
  576: # @note The algorithm used is to take the latest open date and the earliest end date.
  577: #       For consistency with &printable() in lonnavmaps.pm determination of start
  578: #       date for printing checks printstartdate param first, then, if not set,
  579: #       opendate param, then, if not set, contentopen param.
  580: 
  581: sub get_print_dates {
  582:     my $res = shift;
  583:     my $partsref = $res->parts();
  584:     my @parts;
  585:     if (ref($partsref) eq 'ARRAY') {
  586:         @parts   = @{$partsref};
  587:     }
  588:     my $open_date;
  589:     my $close_date;
  590:     my @open_dates;
  591:     my @close_dates;
  592: 
  593: 
  594:     if (@parts) {
  595: 	foreach my $part (@parts) {
  596: 	    my $partopen  = $res->parmval('printstartdate', $part);
  597: 	    my $partclose = $res->parmval('printenddate',  $part);
  598:             if (!$partopen) {
  599:                 $partopen = $res->parmval('opendate',$part);
  600:             }
  601:             if (!$partopen) {
  602:                 $partopen = $res->parmval('contentopen',$part);
  603:             }
  604:             if ($partopen) {
  605:                 push(@open_dates, $partopen);
  606:             }
  607:             if ($partclose) {
  608:                 push(@close_dates, $partclose);
  609:             }
  610: 	    push(@open_dates, $partopen);
  611: 	    push(@close_dates, $partclose);
  612: 	}
  613:     }
  614: 
  615:     ($open_date, $close_date)  = &compute_open_window(\@open_dates, \@close_dates);
  616: 
  617:     return ($open_date, $close_date);
  618: }
  619: 
  620: ##
  621: # Get the dates for which a course says a resource can be printed.  This is like
  622: # get_print_dates but namvaps::course_print_dates are gotten...and not converted
  623: # to times either.
  624: #
  625: # @param $res - Reference to a resource has from lonnvampas::resource.
  626: #
  627: # @return (opendate, closedate)
  628: #
  629: sub course_print_dates {
  630:     my $res = shift;
  631:     my $partsref = $res->parts();
  632:     my @parts    = @$partsref;
  633:     my $open_date;
  634:     my $close_date;
  635:     my @open_dates;
  636:     my @close_dates;
  637:     my $navmap = $res->{NAV_MAP}; # Slightly OO dirty.
  638: 
  639:     # Don't bother looping over undefined or empty parts arraY;
  640: 
  641:     if (@parts) {
  642: 	foreach my $part (@parts) {
  643: 	    my ($partopen, $partclose) = $navmap->course_printdates($res, $part);
  644: 	    push(@open_dates, $partopen);
  645: 	    push(@close_dates, $partclose);
  646: 	}
  647: 	($open_date, $close_date) = &compute_open_window(\@open_dates, \@close_dates);
  648:     }
  649:     return ($open_date, $close_date);
  650: }
  651: ##
  652: # Same as above but for the enclosing map:
  653: #
  654: sub map_print_dates {
  655:     my $res = shift;
  656:     my $partsref = $res->parts();
  657:     my @parts    = @$partsref;
  658:     my $open_date;
  659:     my $close_date;
  660:     my @open_dates;
  661:     my @close_dates;
  662:     my $navmap = $res->{NAV_MAP}; # slightly OO dirty.
  663: 
  664: 
  665:     # Don't bother looping over undefined or empty parts arraY;
  666: 
  667:     if (@parts) {
  668: 	foreach my $part (@parts) {
  669: 	    my ($partopen, $partclose) = $navmap->map_printdates($res, $part);
  670: 	    push(@open_dates, $partopen);
  671: 	    push(@close_dates, $partclose);
  672: 	}
  673: 	($open_date, $close_date) = &compute_open_window(\@open_dates, \@close_dates);
  674:     }
  675:     return ($open_date, $close_date);
  676: }
  677: 
  678: # Determine if a resource is incomplete given the map:
  679: # Parameters:
  680: #   $username - Name of user for whom we are checking.
  681: #   $domain   - Domain of user we are checking.
  682: #   $map - map name.
  683: # Returns:
  684: #     0 - map is not incomplete.
  685: #     1 - map is incomplete.
  686: #
  687: sub incomplete {
  688:     my ($username, $domain, $map) = @_;
  689: 
  690: 
  691:     my $navmap = Apache::lonnavmaps::navmap->new($username, $domain);
  692:     
  693: 
  694:     if (defined($navmap)) {
  695: 	my $res = $navmap->getResourceByUrl($map);
  696: 	my $result = $res->is_incomplete();
  697: 	return $result;
  698:     } else {
  699: 	return 1;
  700:     }
  701: }
  702: #
  703: #  When printing for students, the resources and order of the
  704: #  resources may need to be altered if there are folders with
  705: #  random selectiopn or random ordering (or both) enabled.
  706: #  This sub computes the set of resources to print for a student
  707: #  modified both by random ordering and selection and filtered
  708: #  to only those that are in the original set selected to be printed.
  709: #
  710: # Parameters:
  711: #   $map - The URL of the folder being printed.
  712: #          Used to determine which startResource and finishResource
  713: #          to use when using the navmap's getIterator method.
  714: #   $seq   - The original set of resources to print.
  715: #            (really an array of resource names (array of symb's).
  716: #   $who   - Student/domain for whome the sequence will be generated.
  717: #   $code  - CODE being printed when printing Problems/Resources
  718: #            from folder for CODEd assignments
  719: #   $nohidemap - If true, parameter in map for hiddenresource will be
  720: #                ignored.  The user calling the routine should have
  721: #                both the pav and vgr privileges if this is set to true).
  722: #
  723: # Implicit inputs:
  724: #   $
  725: # Returns:
  726: #   reference to an array of resources that can be passed to
  727: #   print_resources.
  728: # 
  729: sub master_seq_to_person_seq {
  730:     my ($map, $seq, $who, $code, $nohidemap) = @_;
  731: 
  732: 
  733:     my ($username, $userdomain, $usersection) = split(/:/, $who);
  734: 
  735:     # Toss the sequence up into a hash so that we have O(1) lookup time.
  736:     # on the items that come out of the user's list of resources.
  737:     #
  738: 
  739:     my %seq_hash = map {$_  => 1} @$seq;
  740:     my @output_seq;
  741: 
  742:     my $unhidden;
  743:     if ($nohidemap) {
  744:         $unhidden = &Apache::lonnet::clutter($map);
  745:     }
  746:     
  747:     my $navmap           = Apache::lonnavmaps::navmap->new($username, $userdomain,
  748:                                                            $code, $unhidden);
  749:     my ($start,$finish);
  750: 
  751:     if ($map) {
  752:         my $mapres = $navmap->getResourceByUrl($map);
  753:         if ($mapres->is_map()) {
  754:             $start = $mapres->map_start();
  755:             $finish = $mapres->map_finish();
  756:         }
  757:     }
  758:     unless ($start && $finish) {
  759:         $start = $navmap->firstResource();
  760:         $finish = $navmap->finishResource();
  761:     }
  762: 
  763:     my $iterator         = $navmap->getIterator($start,$finish,{},1);
  764: 
  765:     #  Iterate on the resource..select the items that are randomly selected
  766:     #  and that are in the seq_has.  Presumably the iterator will take care
  767:     # of the random ordering part of the deal.
  768:     #
  769:     my $curres;
  770:     while ($curres = $iterator->next()) {
  771: 	#
  772: 	#  Only process resources..that are not removed by randomout...
  773: 	#  and are selected for printint as well.
  774: 	#
  775:         if (ref($curres) && ! $curres->randomout()) {
  776:             my $currsymb = $curres->symb();
  777:             if (exists($seq_hash{$currsymb})) {
  778:                 push(@output_seq, $currsymb);
  779: 	    }
  780: 	}
  781:     }
  782: 
  783:     return \@output_seq;		# for now.
  784:     
  785: }
  786: 
  787: 
  788: # Fetch the contents of a resource, uninterpreted.
  789: # This is used here to fetch a latex file to be included
  790: # verbatim into the printout<
  791: # NOTE: Ask Guy if there is a lonnet function similar to this?
  792: #
  793: # Parameters:
  794: #   URL of the file
  795: #
  796: sub fetch_raw_resource {
  797:     my ($url) = @_;
  798: 
  799:     my $filename  = &Apache::lonnet::filelocation("", $url);
  800:     my $contents  = &Apache::lonnet::getfile($filename);
  801: 
  802:     if ($contents == -1) {
  803: 	return "File open failed for $filename";      # This will bomb the print.
  804:     }
  805:     return $contents;
  806: 
  807:     
  808: }
  809: 
  810: #  Fetch the annotations associated with a URL and 
  811: #  put a centered 'annotations:' title.
  812: #  This is all suppressed if the annotations are empty.
  813: #
  814: sub annotate {
  815:     my ($symb) = @_;
  816: 
  817:     my $annotation_text = &Apache::loncommon::get_annotation($symb, 1);
  818: 
  819: 
  820:     my $result = "";
  821: 
  822:     if (length($annotation_text) > 0) {
  823: 	$result .= '\\hspace*{\\fill} \\\\[\\baselineskip] \textbf{Annotations:} \\\\ ';
  824: 	$result .= "\n";
  825: 	$result .= &Apache::lonxml::latex_special_symbols($annotation_text,"");	# Escape latex.
  826: 	$result .= "\n\n";
  827:     }
  828:     return $result;
  829: }
  830: 
  831: #
  832: #   Set a global document font size:
  833: #   This is done by replacing \begin{document}
  834: #   with \begin{document}{\some-font-directive
  835: #   and \end{document} with
  836: #   }\end{document
  837: #
  838: sub set_font_size {
  839: 
  840:     my ($text) = @_;
  841: 
  842:     # There appear to be cases where the font directive is empty.. in which
  843:     # case the first substituion would  insert a spurious \ oh happy day.
  844:     # as this has been the cause of much mystery and hair pulling _sigh_
  845: 
  846:     if ($font_size ne '') {
  847: 
  848: 	$text =~ s/\\begin\{document}/\\begin{document}{\\$font_size/;
  849:     }
  850:     $text =~ s/\\end\{document}/}\\end{document}/;
  851:     return $text;
  852: 
  853: 
  854: }
  855: 
  856: # include_pdf - PDF files are included into the 
  857: # output as follows:
  858: #  - The PDF, if necessary, is replicated.
  859: #  - The PDF is added to the list of files to convert to postscript (along with the images).
  860: #  - The LaTeX is added to include the final converted postscript in the file as an included
  861: #    job.  The assumption is that the includedpsheader.ps header will be included.
  862: #
  863: # Parameters:
  864: #   pdf_uri   - URI of the PDF file to include.
  865: #   
  866: # Returns:
  867: #  The LaTeX to include.
  868: #
  869: # Assumptions:
  870: #    The uri is actually a PDF file
  871: #    The postscript will have the includepsheader.ps included.
  872: #
  873: #
  874: sub include_pdf {
  875:     my ($pdf_uri) = @_;
  876: 
  877:     # Where is the file? If not local we'll need to repcopy it:'
  878: 
  879:     my $file = &Apache::lonnet::filelocation('', $pdf_uri);
  880:     if (! -e $file) {
  881: 	&Apache::lonnet::repcopy($file);
  882: 	$file = &Apache::lonnet::filelocation('',$pdf_uri);
  883:     }
  884: 
  885:     #  The file isn ow replicated locally.. or it did not exist in the first place
  886:     # (unlikely).  If it did exist, add the pdf to the set of files/images that
  887:     # need tob e converted for this print job:
  888: 
  889:     my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'};
  890:     $file =~ s{(.*)/res/}{$londocroot/res/};
  891: 
  892:     open(FILE,">>$Apache::lonnet::perlvar{'lonPrtDir'}/$env{'user.name'}_$env{'user.domain'}_printout.dat");
  893:     print FILE ("$file\n");
  894:     close (FILE);
  895: 
  896:     # Construct the special to put out.  To do this we need to get the
  897:     # resulting filename after conversion.  The file will have the same name
  898:     # but will be in the user's spool directory with converted images.
  899: 
  900:     my $dirname = "/home/httpd/prtspool/$env{'user.name'}/";
  901:     my ( $base, $path,  $ext) = &fileparse($file, '.pdf');
  902: #    my $destname = $dirname.'/'.$base.'.eps'; # Not really an eps but easier in printout.pl
  903:     $base =~ s/ /\_/g;
  904: 
  905: 
  906:     my $output = &print_latex_header();
  907:     $output    .= '\special{ps: _begin_job_ ('
  908: 	.$base.'.pdf.eps'.
  909: 	')run _end_job_}';
  910: 
  911:     return $output;
  912: 
  913: 
  914: }
  915: ##
  916: #  Collect the various \select_language{language_name}
  917: #  latex tags to build a \usepackage[lang-list]{babel} which will
  918: #  appear just prior to the \begin{document} at the front of the concatenated
  919: #  set of resources:
  920: # @param doc - The string of latex to search/replace.
  921: # @return string
  922: # @retval - the modified document stringt.
  923: #
  924: sub collect_languages {
  925:     my $doc = shift;
  926:     my %languages;
  927:     while ($doc =~ /\\selectlanguage\{(\w+)}/mg) {
  928: 	$languages{$1} = 1;	# allows us to request each language exactly once.
  929:     }
  930:     my @lang_list = (keys(%languages)); # List of unique languages
  931:     if (scalar @lang_list) {
  932: 	my $babel_header = '\usepackage[' . join(',', @lang_list) .']{babel}'. "\n";
  933: 	$doc =~ s/\\begin\{document}/$babel_header\\begin{document}/;
  934:     }
  935:     return $doc;
  936: }
  937: #-------------------------------------------------------------------
  938: 
  939: #
  940: #   ssi_with_retries- Does the server side include of a resource.
  941: #                      if the ssi call returns an error we'll retry it up to
  942: #                      the number of times requested by the caller.
  943: #                      If we still have a proble, no text is appended to the
  944: #                      output and we set some global variables.
  945: #                      to indicate to the caller an SSI error occurred.  
  946: #                      All of this is supposed to deal with the issues described
  947: #                      in LonCAPA BZ 5631 see:
  948: #                      http://bugs.lon-capa.org/show_bug.cgi?id=5631
  949: #                      by informing the user that this happened.
  950: #
  951: # Parameters:
  952: #   resource   - The resource to include.  This is passed directly, without
  953: #                interpretation to lonnet::ssi.
  954: #   form       - The form hash parameters that guide the interpretation of the resource
  955: #                
  956: #   retries    - Number of retries allowed before giving up completely.
  957: # Returns:
  958: #   On success, returns the rendered resource identified by the resource parameter.
  959: # Side Effects:
  960: #   The following global variables can be set:
  961: #    ssi_error                - If an unrecoverable error occurred this becomes true.
  962: #                               It is up to the caller to initialize this to false
  963: #                               if desired.
  964: #    ssi_last_error_resource  - If an unrecoverable error occurred, this is the value
  965: #                               of the resource that could not be rendered by the ssi
  966: #                               call.
  967: #    ssi_last_error           - The error string fetched from the ssi response
  968: #                               in the event of an error.
  969: #
  970: sub ssi_with_retries {
  971:     my ($resource, $retries, %form) = @_;
  972: 
  973:     my $target = $form{'grade_target'};
  974:     my $aom    = $form{'answer_output_mode'};
  975: 
  976: 
  977: 
  978:     my ($content, $response) = &Apache::loncommon::ssi_with_retries($resource, $retries, %form);
  979:     if (!$response->is_success) {
  980: 	$ssi_error               = 1;
  981: 	$ssi_last_error_resource = $resource;
  982: 	$ssi_last_error          = $response->code . " " . $response->message;
  983:         $content='\section*{!!! An error occurred !!!}';	
  984:     }
  985: 
  986:     return $content;
  987: 
  988: }
  989: 
  990: sub get_student_view_with_retries {
  991:     my ($curresline,$retries,$username,$userdomain,$courseid,$target,$moreenv)=@_;
  992: 
  993:     my ($content, $response) = &Apache::loncommon::get_student_view_with_retries($curresline,$retries,$username,$userdomain,$courseid,$target,$moreenv);
  994:     if (!$response->is_success) {
  995:         $ssi_error               = 1;
  996:         $ssi_last_error_resource = $curresline.' for user '.$username.':'.$userdomain;
  997:         $ssi_last_error          = $response->code . " " . $response->message;
  998:         $content='\section*{!!! An error occurred !!!}';
  999:     }
 1000:     return $content;
 1001: 
 1002: }
 1003: 
 1004: #
 1005: #   printf_style_subst  item format_string repl
 1006: #  
 1007: # Does printf style substitution for a format string that
 1008: # can have %[n]item in it.. wherever, %[n]item occurs,
 1009: # rep is substituted in format_string.  Note that
 1010: # [n] is an optional integer length.  If provided,
 1011: # repl is truncated to at most [n] characters prior to 
 1012: # substitution.
 1013: #
 1014: sub printf_style_subst {
 1015:     my ($item, $format_string, $repl) = @_;
 1016:     my $result = "";
 1017:     while ($format_string =~ /(%)(\d*)\Q$item\E/g ) {
 1018: 	my $fmt = $1;
 1019: 	my $size = $2;
 1020: 	my $subst = $repl;
 1021: 	if ($size ne "") {
 1022: 	    $subst = substr($subst, 0, $size);
 1023: 	    
 1024: 	    #  Here's a nice edge case.. supose the end of the
 1025: 	    #  substring is a \.  In that case may have  just
 1026: 	    #  chopped off a TeX escape... in that case, we append
 1027: 	    #   " " for the trailing character, and let the field 
 1028: 	    #  spill over a bit (sigh).
 1029: 	    #  We don't just chop off the last character in order to deal
 1030: 	    #  with one last pathology, and that would be if substr had
 1031: 	    #  trimmed us to e.g. \\\  
 1032: 
 1033: 
 1034: 	    if ($subst =~ /\\$/) {
 1035: 		$subst .= " ";
 1036: 	    }
 1037: 	}
 1038: 	my $item_pos = pos($format_string);
 1039: 	$result .= substr($format_string, 0, $item_pos - length($size) -2) . $subst;
 1040:         $format_string = substr($format_string, pos($format_string));
 1041:     }
 1042: 
 1043:     # Put the residual format string into the result:
 1044: 
 1045:     $result .= $format_string;
 1046: 
 1047:     return $result;
 1048: }
 1049: 
 1050: 
 1051: # Format a header according to a format.  
 1052: # 
 1053: 
 1054: # Substitutions:
 1055: #     %a    - Assignment name.
 1056: #     %c    - Course name.
 1057: #     %n    - Student name.
 1058: #     %s    - The section if it is supplied.
 1059: #
 1060: sub format_page_header {
 1061:     my ($width, $format, $assignment, $course, $student, $section) = @_;
 1062: 
 1063: 
 1064: 
 1065:     $width = &recalcto_mm($width); # Get width in mm.
 1066:     my $chars_per_line = int($width/1.6);   # Character/textline.
 1067: 
 1068:     #  Default format?
 1069: 
 1070:     if ($format eq '') {
 1071: 	# For the default format, we may need to truncate
 1072: 	# elements..  To do this we need to get the page width.
 1073: 	# we assume that each character is about 2mm in width.
 1074: 	# (correct for the header text size??).  We ignore
 1075: 	# any formatting (e.g. boldfacing in this).
 1076: 	# 
 1077: 	# - Allow the student/course to be one line.
 1078: 	#   but only truncate the course.
 1079: 	# - Allow the assignment to be 2 lines (wrapped).
 1080: 	#
 1081: 
 1082: 	
 1083: 
 1084: 	my $name_length    = int($chars_per_line *3 /4);
 1085: 	my $sec_length     = int($chars_per_line / 5);
 1086: 
 1087: 	$format  = "%$name_length".'n';
 1088: 
 1089: 	if ($section) {
 1090: 	    $format .=  ' - Sec: '."%$sec_length".'s';
 1091: 	}
 1092: 
 1093: 	$format .= '\\\\%c \\\\ %a';
 1094:         
 1095: 
 1096:     }
 1097:     # An open question is how to handle long user formatted page headers...
 1098:     # A possible future is to support e.g. %na so that the user can control
 1099:     # the truncation of the elements that can appear in the header.
 1100:     #
 1101:     $format =  &printf_style_subst("a", $format, $assignment);
 1102:     $format =  &printf_style_subst("c", $format, $course);
 1103:     $format =  &printf_style_subst("n", $format, $student);
 1104:     $format =  &printf_style_subst("s", $format, $section);
 1105:     
 1106:     
 1107:     # If the user put %'s in the format string, they  must be escaped
 1108:     # to \% else LaTeX will think they are comments and terminate
 1109:     # the line.. which is bad!!!
 1110:     
 1111:     # If the user has role author, $course and $assignment are empty so
 1112:     # there is '\\ \\ ' in the page header. That's cause a error in LaTeX
 1113:     if($format =~ /\\\\\s\\\\\s/) {
 1114:         #TODO find sensible caption for page header
 1115:         my $testPrintout = '\\\\'.&mt('Authoring Space').' \\\\'.&mt('Test-Printout ');
 1116:         $format =~ s/\\\\\s\\\\\s/$testPrintout/;
 1117:     }
 1118:     #
 1119:     #  We're going to trust LaTeX to break lines appropriately, but
 1120:     #  we'll truncate anything that's more than 3 lines worth of
 1121:     # text.  This is also assuming (which will probably end badly)
 1122:     # nobody's going to embed LaTeX control sequences in the title
 1123:     # header or rather that those control sequences won't get broken
 1124:     # by the stuff below.
 1125:     #
 1126:     my $total_length = 3*$chars_per_line;
 1127:     if (length($format) > $total_length) {
 1128: 	$format = substr($format, 0, $total_length);
 1129:     }
 1130: 
 1131: 
 1132:     return $format;
 1133:     
 1134: }
 1135: 
 1136: #
 1137: #   Convert a numeric code to letters
 1138: #
 1139: sub num_to_letters {
 1140:     my ($num) = @_;
 1141:     my @nums= split('',$num);
 1142:     my @num_to_let=('A'..'Z');
 1143:     my $word;
 1144:     foreach my $digit (@nums) { $word.=$num_to_let[$digit]; }
 1145:     return $word;
 1146: }
 1147: #   Convert a letter code to numeric.
 1148: #
 1149: sub letters_to_num {
 1150:     my ($letters) = @_;
 1151:     my @letters = split('', uc($letters));
 1152:    my %substitution;
 1153:     my $digit = 0;
 1154:     foreach my $letter ('A'..'J') {
 1155: 	$substitution{$letter} = $digit;
 1156: 	$digit++;
 1157:     }
 1158:     #  The substitution is done as below to preserve leading
 1159:     #  zeroes which are needed to keep the code size exact
 1160:     #
 1161:     my $result ="";
 1162:     foreach my $letter (@letters) {
 1163: 	$result.=$substitution{$letter};
 1164:     }
 1165:     return $result;
 1166: }
 1167: 
 1168: #  Determine if a code is a valid numeric code.  Valid
 1169: #  numeric codes must be comprised entirely of digits and
 1170: #  have a correct number of digits.
 1171: #
 1172: #  Parameters:
 1173: #     value      - proposed code value.
 1174: #     num_digits - Number of digits required.
 1175: #
 1176: sub is_valid_numeric_code {
 1177:     my ($value, $num_digits) = @_;
 1178:     #   Remove leading/trailing whitespace;
 1179:     $value =~ s/^\s*//g;
 1180:     $value =~ s/\s*$//g;
 1181:     
 1182:     #  All digits?
 1183:     if ($value !~ /^[0-9]+$/) {
 1184: 	return "Numeric code $value has invalid characters - must only be digits";
 1185:     }
 1186:     if (length($value) != $num_digits) {
 1187: 	return "Numeric code $value incorrect number of digits (correct = $num_digits)";
 1188:     }
 1189:     return undef;
 1190: }
 1191: #   Determines if a code is a valid alhpa code.  Alpha codes
 1192: #   are ciphers that map  [A-J,a-j] -> 0..9 0..9.
 1193: #   They also have a correct digit count.
 1194: # Parameters:
 1195: #     value          - Proposed code value.
 1196: #     num_letters    - correct number of letters.
 1197: # Note:
 1198: #    leading and trailing whitespace are ignored.
 1199: #
 1200: sub is_valid_alpha_code {
 1201:     my ($value, $num_letters) = @_;
 1202:     
 1203:      # strip leading and trailing spaces.
 1204: 
 1205:     $value =~ s/^\s*//g;
 1206:     $value =~ s/\s*$//g;
 1207: 
 1208:     #  All alphas in the right range?
 1209:     if ($value !~ /^[A-J,a-j]+$/) {
 1210: 	return "Invalid letter code $value must only contain A-J";
 1211:     }
 1212:     if (length($value) != $num_letters) {
 1213: 	return "Letter code $value has incorrect number of letters (correct = $num_letters)";
 1214:     }
 1215:     return undef;
 1216: }
 1217: 
 1218: #   Determine if a code entered by the user in a helper is valid.
 1219: #   valid depends on the code type and the type of code selected.
 1220: #   The type of code selected can either be numeric or 
 1221: #   Alphabetic.  If alphabetic, the code, in fact is a simple
 1222: #   substitution cipher for the actual numeric code: 0->A, 1->B ...
 1223: #   We'll be nice and be case insensitive for alpha codes.
 1224: # Parameters:
 1225: #    code_value    - the value of the code the user typed in.
 1226: #    code_option   - The code type selected from the set in the scantron format
 1227: #                    table.
 1228: # Returns:
 1229: #    undef         - The code is valid.
 1230: #    other         - An error message indicating what's wrong.
 1231: #
 1232: sub is_code_valid {
 1233:     my ($code_value, $code_option) = @_;
 1234:     my ($code_type, $code_length) = ('letter', 6);	# defaults.
 1235:     my @lines = &Apache::grades::get_scantronformat_file();
 1236:     foreach my $line (@lines) {
 1237: 	my ($name, $type, $length) = (split(/:/, $line))[0,2,4];
 1238: 	if($name eq $code_option) {
 1239: 	    $code_length = $length;
 1240: 	    if($type eq 'number') {
 1241: 		$code_type = 'number';
 1242: 	    }
 1243: 	}
 1244:     }
 1245:     my $valid;
 1246:     if ($code_type eq 'number') {
 1247: 	return &is_valid_numeric_code($code_value, $code_length);
 1248:     } else {
 1249: 	return &is_valid_alpha_code($code_value, $code_length);
 1250:     }
 1251: 
 1252: }
 1253: #
 1254: # Compare two students by section (Used to sort by section).
 1255: #
 1256: #  Implicit inputs, 
 1257: #    $a - The first one
 1258: #    $b - The second one.
 1259: #
 1260: #  Returns:
 1261: #     a-section cmp b-section
 1262: #
 1263: sub compare_sections {
 1264:     my ($u1, $d1, $s1, $n1, $stat1) = split(/:/, $a);
 1265:     my ($u2, $d2, $s2, $n2, $stat2) = split(/:/, $b);
 1266: 
 1267:     return $s1 cmp $s2;
 1268: }
 1269: 
 1270: #   Compare two students by name.  The students are in the form
 1271: #   returned by the helper:
 1272: #      user:domain:section:last,   first:status
 1273: #   This is a helper function for the perl sort built-in  therefore:
 1274: # Implicit Inputs:
 1275: #    $a     - The first element to compare (global)
 1276: #    $b     - The second element to compare (global)
 1277: # Returns:
 1278: #   -1   - $a < $b
 1279: #    0   - $a == $b
 1280: #   +1   - $a > $b
 1281: #   Note that the initial comparison is done on the last names with the
 1282: #   first names only used to break the tie.
 1283: #
 1284: #
 1285: sub compare_names {
 1286:     #  First split the names up into the primary fields.
 1287: 
 1288:     my ($u1, $d1, $s1, $n1, $stat1) = split(/:/, $a);
 1289:     my ($u2, $d2, $s2, $n2, $stat2) = split(/:/, $b);
 1290: 
 1291:     # Now split the last name and first name of each n:
 1292:     #
 1293: 
 1294:     my ($l1,$f1) = split(/,/, $n1);
 1295:     my ($l2,$f2) = split(/,/, $n2);
 1296: 
 1297:     # We don't bother to remove the leading/trailing whitespace from the
 1298:     # firstname, unless the last names compare identical.
 1299: 
 1300:     if($l1 lt $l2) {
 1301: 	return -1;
 1302:     }
 1303:     if($l1 gt $l2) {
 1304: 	return  1;
 1305:     }
 1306: 
 1307:     # Break the tie on the first name, but there are leading (possibly trailing
 1308:     # whitespaces to get rid of first 
 1309:     #
 1310:     $f1 =~ s/^\s+//;		# Remove leading...
 1311:     $f1 =~ s/\s+$//;		# Trailing spaces from first 1...
 1312:     
 1313:     $f2 =~ s/^\s+//;
 1314:     $f2 =~ s/\s+$//;		# And the same for first 2...
 1315: 
 1316:     if($f1 lt $f2) {
 1317: 	return -1;
 1318:     }
 1319:     if($f1 gt $f2) {
 1320: 	return 1;
 1321:     }
 1322:     
 1323:     #  Must be the same name.
 1324: 
 1325:     return 0;
 1326: }
 1327: 
 1328: sub latex_header_footer_remove {
 1329:     my $text = shift;
 1330:     $text =~ s/\\end\{document}//;
 1331:     $text =~ s/\\documentclass([^&]*)\\begin\{document}//;
 1332:     return $text;
 1333: }
 1334: #
 1335: #  If necessary, encapsulate text inside 
 1336: #  a minipage env.
 1337: #  necessity is determined by the problem_split param.
 1338: #
 1339: sub encapsulate_minipage {
 1340:     my ($text) = @_;
 1341:     if (!($env{'form.problem.split'} =~ /yes/i)) {
 1342: 	$text = '\begin{minipage}{\textwidth}'.$text.'\end{minipage}';
 1343:     }
 1344:     return $text;
 1345: }
 1346: #
 1347: #  The NUMBER_TO_PRINT and SPLIT_PDFS
 1348: #  variables interact, this sub looks at these two parameters
 1349: #  and comes up with a final value for NUMBER_TO_PRINT which can be:
 1350: #     all     - if SPLIT_PDFS eq 'all'.
 1351: #     1       - if SPLIT_PDFS eq 'oneper'
 1352: #     section - if SPLIT_PDFS eq 'sections'
 1353: #     <unchanged> - if SPLIT_PDFS eq 'usenumber'
 1354: #
 1355: sub adjust_number_to_print {
 1356:     my $helper = shift;
 1357: 
 1358:     my $split_pdf = $helper->{'VARS'}->{'SPLIT_PDFS'};
 1359:     
 1360:     if ($split_pdf eq 'all') {
 1361: 	$helper->{'VARS'}->{'NUMBER_TO_PRINT'} = 'all';
 1362:     } elsif ($split_pdf eq 'oneper') {
 1363: 	$helper->{'VARS'}->{'NUMBER_TO_PRINT'} = 1;
 1364:     } elsif ($split_pdf eq 'sections') {
 1365: 	$helper->{'VARS'}->{'NUMBER_TO_PRINT'} = 'section';
 1366:     } elsif ($split_pdf eq 'usenumber') {
 1367: 	#  Unmodified.
 1368:     } else {
 1369: 	# Error!!!!
 1370: 	
 1371: 	croak "bad SPLIT_PDFS: $split_pdf in lonprintout::adjust_number_to_print";
 1372: 
 1373:     }
 1374: }
 1375: 
 1376: 
 1377: sub character_chart {
 1378:     my $result = shift;
 1379:     return  &Apache::entities::replace_entities($result);
 1380: }
 1381: 
 1382: sub old_character_chart {
 1383:     my $result = shift;	
 1384:     $result =~ s/&\#0?0?(7|9);//g;
 1385:     $result =~ s/&\#0?(10|13);//g;
 1386:     $result =~ s/&\#0?32;/ /g;
 1387:     $result =~ s/&\#0?33;/!/g;
 1388:     $result =~ s/&(\#0?34|quot);/\"/g;
 1389:     $result =~ s/&\#0?35;/\\\#/g;
 1390:     $result =~ s/&\#0?36;/\\\$/g;
 1391:     $result =~ s/&\#0?37;/\\%/g; 
 1392:     $result =~ s/&(\#0?38|amp);/\\&/g; 
 1393:     $result =~ s/&\#(0?39|146);/\'/g;
 1394:     $result =~ s/&\#0?40;/(/g;
 1395:     $result =~ s/&\#0?41;/)/g;
 1396:     $result =~ s/&\#0?42;/\*/g;
 1397:     $result =~ s/&\#0?43;/\+/g;
 1398:     $result =~ s/&\#(0?44|130);/,/g;
 1399:     $result =~ s/&\#0?45;/-/g;
 1400:     $result =~ s/&\#0?46;/\./g;
 1401:     $result =~ s/&\#0?47;/\//g;
 1402:     $result =~ s/&\#0?48;/0/g;
 1403:     $result =~ s/&\#0?49;/1/g;
 1404:     $result =~ s/&\#0?50;/2/g;
 1405:     $result =~ s/&\#0?51;/3/g;
 1406:     $result =~ s/&\#0?52;/4/g;
 1407:     $result =~ s/&\#0?53;/5/g;
 1408:     $result =~ s/&\#0?54;/6/g;
 1409:     $result =~ s/&\#0?55;/7/g;
 1410:     $result =~ s/&\#0?56;/8/g;
 1411:     $result =~ s/&\#0?57;/9/g;
 1412:     $result =~ s/&\#0?58;/:/g;
 1413:     $result =~ s/&\#0?59;/;/g;
 1414:     $result =~ s/&(\#0?60|lt|\#139);/\$<\$/g;
 1415:     $result =~ s/&\#0?61;/\\ensuremath\{=\}/g;
 1416:     $result =~ s/&(\#0?62|gt|\#155);/\\ensuremath\{>\}/g;
 1417:     $result =~ s/&\#0?63;/\?/g;
 1418:     $result =~ s/&\#0?65;/A/g;
 1419:     $result =~ s/&\#0?66;/B/g;
 1420:     $result =~ s/&\#0?67;/C/g;
 1421:     $result =~ s/&\#0?68;/D/g;
 1422:     $result =~ s/&\#0?69;/E/g;
 1423:     $result =~ s/&\#0?70;/F/g;
 1424:     $result =~ s/&\#0?71;/G/g;
 1425:     $result =~ s/&\#0?72;/H/g;
 1426:     $result =~ s/&\#0?73;/I/g;
 1427:     $result =~ s/&\#0?74;/J/g;
 1428:     $result =~ s/&\#0?75;/K/g;
 1429:     $result =~ s/&\#0?76;/L/g;
 1430:     $result =~ s/&\#0?77;/M/g;
 1431:     $result =~ s/&\#0?78;/N/g;
 1432:     $result =~ s/&\#0?79;/O/g;
 1433:     $result =~ s/&\#0?80;/P/g;
 1434:     $result =~ s/&\#0?81;/Q/g;
 1435:     $result =~ s/&\#0?82;/R/g;
 1436:     $result =~ s/&\#0?83;/S/g;
 1437:     $result =~ s/&\#0?84;/T/g;
 1438:     $result =~ s/&\#0?85;/U/g;
 1439:     $result =~ s/&\#0?86;/V/g;
 1440:     $result =~ s/&\#0?87;/W/g;
 1441:     $result =~ s/&\#0?88;/X/g;
 1442:     $result =~ s/&\#0?89;/Y/g;
 1443:     $result =~ s/&\#0?90;/Z/g;
 1444:     $result =~ s/&\#0?91;/[/g;
 1445:     $result =~ s/&\#0?92;/\\ensuremath\{\\setminus\}/g;
 1446:     $result =~ s/&\#0?93;/]/g;
 1447:     $result =~ s/&\#(0?94|136);/\\ensuremath\{\\wedge\}/g;
 1448:     $result =~ s/&\#(0?95|138|154);/\\underline{\\makebox[2mm]{\\strut}}/g;
 1449:     $result =~ s/&\#(0?96|145);/\`/g;
 1450:     $result =~ s/&\#0?97;/a/g;
 1451:     $result =~ s/&\#0?98;/b/g;
 1452:     $result =~ s/&\#0?99;/c/g;
 1453:     $result =~ s/&\#100;/d/g;
 1454:     $result =~ s/&\#101;/e/g;
 1455:     $result =~ s/&\#102;/f/g;
 1456:     $result =~ s/&\#103;/g/g;
 1457:     $result =~ s/&\#104;/h/g;
 1458:     $result =~ s/&\#105;/i/g;
 1459:     $result =~ s/&\#106;/j/g;
 1460:     $result =~ s/&\#107;/k/g;
 1461:     $result =~ s/&\#108;/l/g;
 1462:     $result =~ s/&\#109;/m/g;
 1463:     $result =~ s/&\#110;/n/g;
 1464:     $result =~ s/&\#111;/o/g;
 1465:     $result =~ s/&\#112;/p/g;
 1466:     $result =~ s/&\#113;/q/g;
 1467:     $result =~ s/&\#114;/r/g;
 1468:     $result =~ s/&\#115;/s/g;
 1469:     $result =~ s/&\#116;/t/g;
 1470:     $result =~ s/&\#117;/u/g;
 1471:     $result =~ s/&\#118;/v/g;
 1472:     $result =~ s/&\#119;/w/g;
 1473:     $result =~ s/&\#120;/x/g;
 1474:     $result =~ s/&\#121;/y/g;
 1475:     $result =~ s/&\#122;/z/g;
 1476:     $result =~ s/&\#123;/\\{/g;
 1477:     $result =~ s/&\#124;/\|/g;
 1478:     $result =~ s/&\#125;/\\}/g;
 1479:     $result =~ s/&\#126;/\~/g;
 1480:     $result =~ s/&\#131;/\\textflorin /g;
 1481:     $result =~ s/&\#132;/\"/g;
 1482:     $result =~ s/&\#133;/\\ensuremath\{\\ldots\}/g;
 1483:     $result =~ s/&\#134;/\\ensuremath\{\\dagger\}/g;
 1484:     $result =~ s/&\#135;/\\ensuremath\{\\ddagger\}/g;
 1485:     $result =~ s/&\#137;/\\textperthousand /g;
 1486:     $result =~ s/&\#140;/{\\OE}/g;
 1487:     $result =~ s/&\#147;/\`\`/g;
 1488:     $result =~ s/&\#148;/\'\'/g;
 1489:     $result =~ s/&\#149;/\\ensuremath\{\\bullet\}/g;
 1490:     $result =~ s/&(\#150|\#8211);/--/g;
 1491:     $result =~ s/&\#151;/---/g;
 1492:     $result =~ s/&\#152;/\\ensuremath\{\\sim\}/g;
 1493:     $result =~ s/&\#153;/\\texttrademark /g;
 1494:     $result =~ s/&\#156;/\\oe/g;
 1495:     $result =~ s/&\#159;/\\\"Y/g;
 1496:     $result =~ s/&(\#160|nbsp);/~/g;
 1497:     $result =~ s/&(\#161|iexcl);/!\`/g;
 1498:     $result =~ s/&(\#162|cent);/\\textcent /g;
 1499:     $result =~ s/&(\#163|pound);/\\pounds /g; 
 1500:     $result =~ s/&(\#164|curren);/\\textcurrency /g;
 1501:     $result =~ s/&(\#165|yen);/\\textyen /g;
 1502:     $result =~ s/&(\#166|brvbar);/\\textbrokenbar /g;
 1503:     $result =~ s/&(\#167|sect);/\\textsection /g;
 1504:     $result =~ s/&(\#168|uml);/\\"\{\} /g;
 1505:     $result =~ s/&(\#169|copy);/\\copyright /g;
 1506:     $result =~ s/&(\#170|ordf);/\\textordfeminine /g;
 1507:     $result =~ s/&(\#172|not);/\\ensuremath\{\\neg\}/g;
 1508:     $result =~ s/&(\#173|shy);/ - /g;
 1509:     $result =~ s/&(\#174|reg);/\\textregistered /g;
 1510:     $result =~ s/&(\#175|macr);/\\ensuremath\{^{-}\}/g;
 1511:     $result =~ s/&(\#176|deg);/\\ensuremath\{^{\\circ}\}/g;
 1512:     $result =~ s/&(\#177|plusmn);/\\ensuremath\{\\pm\}/g;
 1513:     $result =~ s/&(\#178|sup2);/\\ensuremath\{^2\}/g;
 1514:     $result =~ s/&(\#179|sup3);/\\ensuremath\{^3\}/g;
 1515:     $result =~ s/&(\#180|acute);/\\'\{\} /g;
 1516:     $result =~ s/&(\#181|micro);/\\ensuremath\{\\mu\}/g;
 1517:     $result =~ s/&(\#182|para);/\\P/g;
 1518:     $result =~ s/&(\#183|middot);/\\ensuremath\{\\cdot\}/g;
 1519:     $result =~ s/&(\#184|cedil);/\\c{\\strut}/g;
 1520:     $result =~ s/&(\#185|sup1);/\\ensuremath\{^1\}/g;
 1521:     $result =~ s/&(\#186|ordm);/\\textordmasculine /g;
 1522:     $result =~ s/&(\#188|frac14);/\\textonequarter /g;
 1523:     $result =~ s/&(\#189|frac12);/\\textonehalf /g;
 1524:     $result =~ s/&(\#190|frac34);/\\textthreequarters /g;
 1525:     $result =~ s/&(\#191|iquest);/?\`/g;   
 1526:     $result =~ s/&(\#192|Agrave);/\\\`{A}/g;  
 1527:     $result =~ s/&(\#193|Aacute);/\\\'{A}/g; 
 1528:     $result =~ s/&(\#194|Acirc);/\\^{A}/g;
 1529:     $result =~ s/&(\#195|Atilde);/\\~{A}/g;
 1530:     $result =~ s/&(\#196|Auml);/\\\"{A}/g; 
 1531:     $result =~ s/&(\#197|Aring);/{\\AA}/g;
 1532:     $result =~ s/&(\#198|AElig);/{\\AE}/g;
 1533:     $result =~ s/&(\#199|Ccedil);/\\c{c}/g;
 1534:     $result =~ s/&(\#200|Egrave);/\\\`{E}/g;  
 1535:     $result =~ s/&(\#201|Eacute);/\\\'{E}/g;    
 1536:     $result =~ s/&(\#202|Ecirc);/\\^{E}/g;
 1537:     $result =~ s/&(\#203|Euml);/\\\"{E}/g;
 1538:     $result =~ s/&(\#204|Igrave);/\\\`{I}/g;
 1539:     $result =~ s/&(\#205|Iacute);/\\\'{I}/g;    
 1540:     $result =~ s/&(\#206|Icirc);/\\^{I}/g;
 1541:     $result =~ s/&(\#207|Iuml);/\\\"{I}/g;    
 1542:     $result =~ s/&(\#209|Ntilde);/\\~{N}/g;
 1543:     $result =~ s/&(\#210|Ograve);/\\\`{O}/g;
 1544:     $result =~ s/&(\#211|Oacute);/\\\'{O}/g;
 1545:     $result =~ s/&(\#212|Ocirc);/\\^{O}/g;
 1546:     $result =~ s/&(\#213|Otilde);/\\~{O}/g;
 1547:     $result =~ s/&(\#214|Ouml);/\\\"{O}/g;    
 1548:     $result =~ s/&(\#215|times);/\\ensuremath\{\\times\}/g;
 1549:     $result =~ s/&(\#216|Oslash);/{\\O}/g;
 1550:     $result =~ s/&(\#217|Ugrave);/\\\`{U}/g;    
 1551:     $result =~ s/&(\#218|Uacute);/\\\'{U}/g;
 1552:     $result =~ s/&(\#219|Ucirc);/\\^{U}/g;
 1553:     $result =~ s/&(\#220|Uuml);/\\\"{U}/g;
 1554:     $result =~ s/&(\#221|Yacute);/\\\'{Y}/g;
 1555:     $result =~ s/&(\#223|szlig);/{\\ss}/g;
 1556:     $result =~ s/&(\#224|agrave);/\\\`{a}/g;
 1557:     $result =~ s/&(\#225|aacute);/\\\'{a}/g;
 1558:     $result =~ s/&(\#226|acirc);/\\^{a}/g;
 1559:     $result =~ s/&(\#227|atilde);/\\~{a}/g;
 1560:     $result =~ s/&(\#228|auml);/\\\"{a}/g;
 1561:     $result =~ s/&(\#229|aring);/{\\aa}/g;
 1562:     $result =~ s/&(\#230|aelig);/{\\ae}/g;
 1563:     $result =~ s/&(\#231|ccedil);/\\c{c}/g;
 1564:     $result =~ s/&(\#232|egrave);/\\\`{e}/g;
 1565:     $result =~ s/&(\#233|eacute);/\\\'{e}/g;
 1566:     $result =~ s/&(\#234|ecirc);/\\^{e}/g;
 1567:     $result =~ s/&(\#235|euml);/\\\"{e}/g;
 1568:     $result =~ s/&(\#236|igrave);/\\\`{i}/g;
 1569:     $result =~ s/&(\#237|iacute);/\\\'{i}/g;
 1570:     $result =~ s/&(\#238|icirc);/\\^{i}/g;
 1571:     $result =~ s/&(\#239|iuml);/\\\"{i}/g;
 1572:     $result =~ s/&(\#240|eth);/\\ensuremath\{\\partial\}/g;
 1573:     $result =~ s/&(\#241|ntilde);/\\~{n}/g;
 1574:     $result =~ s/&(\#242|ograve);/\\\`{o}/g;
 1575:     $result =~ s/&(\#243|oacute);/\\\'{o}/g;
 1576:     $result =~ s/&(\#244|ocirc);/\\^{o}/g;
 1577:     $result =~ s/&(\#245|otilde);/\\~{o}/g;
 1578:     $result =~ s/&(\#246|ouml);/\\\"{o}/g;
 1579:     $result =~ s/&(\#247|divide);/\\ensuremath\{\\div\}/g;
 1580:     $result =~ s/&(\#248|oslash);/{\\o}/g;
 1581:     $result =~ s/&(\#249|ugrave);/\\\`{u}/g; 
 1582:     $result =~ s/&(\#250|uacute);/\\\'{u}/g;
 1583:     $result =~ s/&(\#251|ucirc);/\\^{u}/g;
 1584:     $result =~ s/&(\#252|uuml);/\\\"{u}/g;
 1585:     $result =~ s/&(\#253|yacute);/\\\'{y}/g;
 1586:     $result =~ s/&(\#255|yuml);/\\\"{y}/g;
 1587:     $result =~ s/&\#295;/\\ensuremath\{\\hbar\}/g;
 1588:     $result =~ s/&\#952;/\\ensuremath\{\\theta\}/g;
 1589: #Greek Alphabet
 1590:     $result =~ s/&(alpha|\#945);/\\ensuremath\{\\alpha\}/g;
 1591:     $result =~ s/&(beta|\#946);/\\ensuremath\{\\beta\}/g;
 1592:     $result =~ s/&(gamma|\#947);/\\ensuremath\{\\gamma\}/g;
 1593:     $result =~ s/&(delta|\#948);/\\ensuremath\{\\delta\}/g;
 1594:     $result =~ s/&(epsilon|\#949);/\\ensuremath\{\\epsilon\}/g;
 1595:     $result =~ s/&(zeta|\#950);/\\ensuremath\{\\zeta\}/g;
 1596:     $result =~ s/&(eta|\#951);/\\ensuremath\{\\eta\}/g;
 1597:     $result =~ s/&(theta|\#952);/\\ensuremath\{\\theta\}/g;
 1598:     $result =~ s/&(iota|\#953);/\\ensuremath\{\\iota\}/g;
 1599:     $result =~ s/&(kappa|\#954);/\\ensuremath\{\\kappa\}/g;
 1600:     $result =~ s/&(lambda|\#955);/\\ensuremath\{\\lambda\}/g;
 1601:     $result =~ s/&(mu|\#956);/\\ensuremath\{\\mu\}/g;
 1602:     $result =~ s/&(nu|\#957);/\\ensuremath\{\\nu\}/g;
 1603:     $result =~ s/&(xi|\#958);/\\ensuremath\{\\xi\}/g;
 1604:     $result =~ s/&(omicron|\#959);/o/g;
 1605:     $result =~ s/&(pi|\#960);/\\ensuremath\{\\pi\}/g;
 1606:     $result =~ s/&(rho|\#961);/\\ensuremath\{\\rho\}/g;
 1607:     $result =~ s/&(sigma|\#963);/\\ensuremath\{\\sigma\}/g;
 1608:     $result =~ s/&(tau|\#964);/\\ensuremath\{\\tau\}/g;
 1609:     $result =~ s/&(upsilon|\#965);/\\ensuremath\{\\upsilon\}/g;
 1610:     $result =~ s/&(phi|\#966);/\\ensuremath\{\\phi\}/g;
 1611:     $result =~ s/&(chi|\#967);/\\ensuremath\{\\chi\}/g;
 1612:     $result =~ s/&(psi|\#968);/\\ensuremath\{\\psi\}/g;
 1613:     $result =~ s/&(omega|\#969);/\\ensuremath\{\\omega\}/g;
 1614:     $result =~ s/&(thetasym|\#977);/\\ensuremath\{\\vartheta\}/g;
 1615:     $result =~ s/&(piv|\#982);/\\ensuremath\{\\varpi\}/g;
 1616:     $result =~ s/&(Alpha|\#913);/A/g;
 1617:     $result =~ s/&(Beta|\#914);/B/g;
 1618:     $result =~ s/&(Gamma|\#915);/\\ensuremath\{\\Gamma\}/g;
 1619:     $result =~ s/&(Delta|\#916);/\\ensuremath\{\\Delta\}/g;
 1620:     $result =~ s/&(Epsilon|\#917);/E/g;
 1621:     $result =~ s/&(Zeta|\#918);/Z/g;
 1622:     $result =~ s/&(Eta|\#919);/H/g;
 1623:     $result =~ s/&(Theta|\#920);/\\ensuremath\{\\Theta\}/g;
 1624:     $result =~ s/&(Iota|\#921);/I/g;
 1625:     $result =~ s/&(Kappa|\#922);/K/g;
 1626:     $result =~ s/&(Lambda|\#923);/\\ensuremath\{\\Lambda\}/g;
 1627:     $result =~ s/&(Mu|\#924);/M/g;
 1628:     $result =~ s/&(Nu|\#925);/N/g;
 1629:     $result =~ s/&(Xi|\#926);/\\ensuremath\{\\Xi\}/g;
 1630:     $result =~ s/&(Omicron|\#927);/O/g;
 1631:     $result =~ s/&(Pi|\#928);/\\ensuremath\{\\Pi\}/g;
 1632:     $result =~ s/&(Rho|\#929);/P/g;
 1633:     $result =~ s/&(Sigma|\#931);/\\ensuremath\{\\Sigma\}/g;
 1634:     $result =~ s/&(Tau|\#932);/T/g;
 1635:     $result =~ s/&(Upsilon|\#933);/\\ensuremath\{\\Upsilon\}/g;
 1636:     $result =~ s/&(Phi|\#934);/\\ensuremath\{\\Phi\}/g;
 1637:     $result =~ s/&(Chi|\#935);/X/g;
 1638:     $result =~ s/&(Psi|\#936);/\\ensuremath\{\\Psi\}/g;
 1639:     $result =~ s/&(Omega|\#937);/\\ensuremath\{\\Omega\}/g;
 1640: #Arrows (extended HTML 4.01)
 1641:     $result =~ s/&(larr|\#8592);/\\ensuremath\{\\leftarrow\}/g;
 1642:     $result =~ s/&(uarr|\#8593);/\\ensuremath\{\\uparrow\}/g;
 1643:     $result =~ s/&(rarr|\#8594);/\\ensuremath\{\\rightarrow\}/g;
 1644:     $result =~ s/&(darr|\#8595);/\\ensuremath\{\\downarrow\}/g;
 1645:     $result =~ s/&(harr|\#8596);/\\ensuremath\{\\leftrightarrow\}/g;
 1646:     $result =~ s/&(lArr|\#8656);/\\ensuremath\{\\Leftarrow\}/g;
 1647:     $result =~ s/&(uArr|\#8657);/\\ensuremath\{\\Uparrow\}/g;
 1648:     $result =~ s/&(rArr|\#8658);/\\ensuremath\{\\Rightarrow\}/g;
 1649:     $result =~ s/&(dArr|\#8659);/\\ensuremath\{\\Downarrow\}/g;
 1650:     $result =~ s/&(hArr|\#8660);/\\ensuremath\{\\Leftrightarrow\}/g;
 1651: #Mathematical Operators (extended HTML 4.01)
 1652:     $result =~ s/&(forall|\#8704);/\\ensuremath\{\\forall\}/g;
 1653:     $result =~ s/&(part|\#8706);/\\ensuremath\{\\partial\}/g;
 1654:     $result =~ s/&(exist|\#8707);/\\ensuremath\{\\exists\}/g;
 1655:     $result =~ s/&(empty|\#8709);/\\ensuremath\{\\emptyset\}/g;
 1656:     $result =~ s/&(nabla|\#8711);/\\ensuremath\{\\nabla\}/g;
 1657:     $result =~ s/&(isin|\#8712);/\\ensuremath\{\\in\}/g;
 1658:     $result =~ s/&(notin|\#8713);/\\ensuremath\{\\notin\}/g;
 1659:     $result =~ s/&(ni|\#8715);/\\ensuremath\{\\ni\}/g;
 1660:     $result =~ s/&(prod|\#8719);/\\ensuremath\{\\prod\}/g;
 1661:     $result =~ s/&(sum|\#8721);/\\ensuremath\{\\sum\}/g;
 1662:     $result =~ s/&(minus|\#8722);/\\ensuremath\{-\}/g;
 1663:     $result =~ s/–/\\ensuremath\{-\}/g;
 1664:     $result =~ s/&(lowast|\#8727);/\\ensuremath\{*\}/g;
 1665:     $result =~ s/&(radic|\#8730);/\\ensuremath\{\\surd\}/g;
 1666:     $result =~ s/&(prop|\#8733);/\\ensuremath\{\\propto\}/g;
 1667:     $result =~ s/&(infin|\#8734);/\\ensuremath\{\\infty\}/g;
 1668:     $result =~ s/&(ang|\#8736);/\\ensuremath\{\\angle\}/g;
 1669:     $result =~ s/&(and|\#8743);/\\ensuremath\{\\wedge\}/g;
 1670:     $result =~ s/&(or|\#8744);/\\ensuremath\{\\vee\}/g;
 1671:     $result =~ s/&(cap|\#8745);/\\ensuremath\{\\cap\}/g;
 1672:     $result =~ s/&(cup|\#8746);/\\ensuremath\{\\cup\}/g;
 1673:     $result =~ s/&(int|\#8747);/\\ensuremath\{\\int\}/g;
 1674:     $result =~ s/&(sim|\#8764);/\\ensuremath\{\\sim\}/g;
 1675:     $result =~ s/&(cong|\#8773);/\\ensuremath\{\\cong\}/g;
 1676:     $result =~ s/&(asymp|\#8776);/\\ensuremath\{\\approx\}/g;
 1677:     $result =~ s/&(ne|\#8800);/\\ensuremath\{\\not=\}/g;
 1678:     $result =~ s/&(equiv|\#8801);/\\ensuremath\{\\equiv\}/g;
 1679:     $result =~ s/&(le|\#8804);/\\ensuremath\{\\leq\}/g;
 1680:     $result =~ s/&(ge|\#8805);/\\ensuremath\{\\geq\}/g;
 1681:     $result =~ s/&(sub|\#8834);/\\ensuremath\{\\subset\}/g;
 1682:     $result =~ s/&(sup|\#8835);/\\ensuremath\{\\supset\}/g;
 1683:     $result =~ s/&(nsub|\#8836);/\\ensuremath\{\\not\\subset\}/g;
 1684:     $result =~ s/&(sube|\#8838);/\\ensuremath\{\\subseteq\}/g;
 1685:     $result =~ s/&(supe|\#8839);/\\ensuremath\{\\supseteq\}/g;
 1686:     $result =~ s/&(oplus|\#8853);/\\ensuremath\{\\oplus\}/g;
 1687:     $result =~ s/&(otimes|\#8855);/\\ensuremath\{\\otimes\}/g;
 1688:     $result =~ s/&(perp|\#8869);/\\ensuremath\{\\perp\}/g;
 1689:     $result =~ s/&(sdot|\#8901);/\\ensuremath\{\\cdot\}/g;
 1690: #Geometric Shapes (extended HTML 4.01)
 1691:     $result =~ s/&(loz|\#9674);/\\ensuremath\{\\Diamond\}/g;
 1692: #Miscellaneous Symbols (extended HTML 4.01)
 1693:     $result =~ s/&(spades|\#9824);/\\ensuremath\{\\spadesuit\}/g;
 1694:     $result =~ s/&(clubs|\#9827);/\\ensuremath\{\\clubsuit\}/g;
 1695:     $result =~ s/&(hearts|\#9829);/\\ensuremath\{\\heartsuit\}/g;
 1696:     $result =~ s/&(diams|\#9830);/\\ensuremath\{\\diamondsuit\}/g;
 1697: #   Chemically useful 'things' contributed by Hon Kie (bug 4652).
 1698: 
 1699:     $result =~ s/&\#8636;/\\ensuremath\{\\leftharpoonup\}/g;
 1700:     $result =~ s/&\#8637;/\\ensuremath\{\\leftharpoondown\}/g;
 1701:     $result =~ s/&\#8640;/\\ensuremath\{\\rightharpoonup\}/g;
 1702:     $result =~ s/&\#8641;/\\ensuremath\{\\rightharpoondown\}/g;
 1703:     $result =~ s/&\#8652;/\\ensuremath\{\\rightleftharpoons\}/g;
 1704:     $result =~ s/&\#8605;/\\ensuremath\{\\leadsto\}/g;
 1705:     $result =~ s/&\#8617;/\\ensuremath\{\\hookleftarrow\}/g;
 1706:     $result =~ s/&\#8618;/\\ensuremath\{\\hookrightarrow\}/g;
 1707:     $result =~ s/&\#8614;/\\ensuremath\{\\mapsto\}/g;
 1708:     $result =~ s/&\#8599;/\\ensuremath\{\\nearrow\}/g;
 1709:     $result =~ s/&\#8600;/\\ensuremath\{\\searrow\}/g;
 1710:     $result =~ s/&\#8601;/\\ensuremath\{\\swarrow\}/g;
 1711:     $result =~ s/&\#8598;/\\ensuremath\{\\nwarrow\}/g;
 1712: 
 1713:     # Left/right quotations:
 1714: 
 1715:     $result =~ s/&(ldquo|#8220);/\`\`/g;
 1716:     $result =~ s/&(rdquo|#8221);/\'\'/g;
 1717: 
 1718: 
 1719: 
 1720:     return $result;
 1721: }
 1722: 
 1723: 
 1724:                   #width, height, oddsidemargin, evensidemargin, topmargin
 1725: my %page_formats=
 1726:     ('letter' => {
 1727: 	 'book' => {
 1728: 	     '1' => [ '7.1 in','9.8 in', '-0.57 in','-0.57 in','0.275 in'],
 1729: 	     '2' => ['3.66 in','9.8 in', '-0.57 in','-0.57 in','0.275 in']
 1730: 	 },
 1731: 	 'album' => {
 1732: 	     '1' => [ '8.8 in', '6.8 in','-0.55 in',  '-0.55 in','0.394 in'],
 1733: 	     '2' => [ '4.8 in', '6.8 in','-0.5 in', '-1.0 in','3.5 in']
 1734: 	 },
 1735:      },
 1736:      'legal' => {
 1737: 	 'book' => {
 1738: 	     '1' => ['7.1 in','13 in',,'-0.57 in','-0.57 in','-0.5 in'],
 1739: 	     '2' => ['3.66 in','13 in','-0.57 in','-0.57 in','-0.5 in']
 1740: 	 },
 1741: 	 'album' => {
 1742: 	     '1' => ['12 in','7.1 in',,'-0.57 in','-0.57 in','-0.5 in'],
 1743:              '2' => ['6.0 in','7.1 in','-1 in','-1 in','5 in']
 1744:           },
 1745:      },
 1746:      'tabloid' => {
 1747: 	 'book' => {
 1748: 	     '1' => ['9.8 in','16 in','-0.57 in','-0.57 in','-0.5 in'],
 1749: 	     '2' => ['4.9 in','16 in','-0.57 in','-0.57 in','-0.5 in']
 1750: 	 },
 1751: 	 'album' => {
 1752: 	     '1' => ['16 in','9.8 in','-0.57 in','-0.57 in','-0.5 in'],
 1753: 	     '2' => ['16 in','4.9 in','-0.57 in','-0.57 in','-0.5 in']
 1754:           },
 1755:      },
 1756:      'executive' => {
 1757: 	 'book' => {
 1758: 	     '1' => ['6.8 in','9 in','-0.57 in','-0.57 in','1.2 in'],
 1759: 	     '2' => ['3.1 in','9 in','-0.57 in','-0.57 in','1.2 in']
 1760: 	 },
 1761: 	 'album' => {
 1762: 	     '1' => [],
 1763: 	     '2' => []
 1764:           },
 1765:      },
 1766:      'a2' => {
 1767: 	 'book' => {
 1768: 	     '1' => [],
 1769: 	     '2' => []
 1770: 	 },
 1771: 	 'album' => {
 1772: 	     '1' => [],
 1773: 	     '2' => []
 1774:           },
 1775:      },
 1776:      'a3' => {
 1777: 	 'book' => {
 1778: 	     '1' => [],
 1779: 	     '2' => []
 1780: 	 },
 1781: 	 'album' => {
 1782: 	     '1' => [],
 1783: 	     '2' => []
 1784:           },
 1785:      },
 1786:      'a4' => {
 1787: 	 'book' => {
 1788: 	     '1' => ['17.6 cm','27.2 cm','-1.397 cm','-2.11 cm','-1.27 cm'],
 1789: 	     '2' => [ '9.1 cm','27.2 cm','-1.397 cm','-2.11 cm','-1.27 cm']
 1790: 	 },
 1791: 	 'album' => {
 1792: 	     '1' => ['21.59 cm','19.558 cm','-1.397cm','-2.11 cm','0 cm'],
 1793: 	     '2' => ['9.91 cm','19.558 cm','-1.397 cm','-2.11 cm','0 cm']
 1794: 	 },
 1795:      },
 1796:      'a5' => {
 1797: 	 'book' => {
 1798: 	     '1' => [],
 1799: 	     '2' => []
 1800: 	 },
 1801: 	 'album' => {
 1802: 	     '1' => [],
 1803: 	     '2' => []
 1804:           },
 1805:      },
 1806:      'a6' => {
 1807: 	 'book' => {
 1808: 	     '1' => [],
 1809: 	     '2' => []
 1810: 	 },
 1811: 	 'album' => {
 1812: 	     '1' => [],
 1813: 	     '2' => []
 1814:           },
 1815:      },
 1816:      );
 1817: 
 1818: sub page_format {
 1819: #
 1820: #Supported paper format: "Letter [8 1/2x11 in]",      "Legal [8 1/2x14 in]",
 1821: #                        "Ledger/Tabloid [11x17 in]", "Executive [7 1/2x10 in]",
 1822: #                        "A2 [420x594 mm]",           "A3 [297x420 mm]",
 1823: #                        "A4 [210x297 mm]",           "A5 [148x210 mm]",
 1824: #                        "A6 [105x148 mm]"
 1825: # 
 1826:     my ($papersize,$layout,$numberofcolumns) = @_; 
 1827:     return @{$page_formats{$papersize}->{$layout}->{$numberofcolumns}};
 1828: }
 1829: 
 1830: 
 1831: sub get_name {
 1832:     my ($uname,$udom)=@_;
 1833:     if (!defined($uname)) { $uname=$env{'user.name'}; }
 1834:     if (!defined($udom)) { $udom=$env{'user.domain'}; }
 1835:     my $plainname=&Apache::loncommon::plainname($uname,$udom);
 1836:     if ($plainname=~/^\s*$/) { $plainname=$uname.'@'.$udom; }
 1837:    $plainname=&Apache::lonxml::latex_special_symbols($plainname,'header');
 1838:     return $plainname;
 1839: }
 1840: 
 1841: sub get_course {
 1842:     my $courseidinfo;
 1843:     if (defined($env{'request.course.id'})) {
 1844: 	$courseidinfo = &Apache::lonxml::latex_special_symbols(&unescape($env{'course.'.$env{'request.course.id'}.'.description'}),'header');
 1845: 	my $sec = $env{'request.course.sec'};
 1846: 	    
 1847:     }
 1848:     return $courseidinfo;
 1849: }
 1850: 
 1851: sub page_format_transformation {
 1852:     my ($papersize,$layout,$numberofcolumns,$choice,$text,$assignment,$tableofcontents,$indexlist,$selectionmade) = @_; 
 1853:     my ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin);
 1854: 
 1855:     if ($selectionmade eq '4') {
 1856: 	if ($choice eq 'all_problems') {
 1857:             $assignment=&mt('Problems from the Whole Course');
 1858: 	} else {
 1859:             $assignment=&mt('Resources from the Whole Course');
 1860: 	}
 1861:     } else {
 1862: 	$assignment=&Apache::lonxml::latex_special_symbols($assignment,'header');
 1863:     }
 1864:     ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin) = &page_format($papersize,$layout,$numberofcolumns,$topmargin);
 1865: 
 1866: 
 1867:     my $name = &get_name();
 1868:     my $courseidinfo = &get_course();
 1869:     my $header_text  = $parmhash{'print_header_format'};
 1870:     $header_text     = &format_page_header($textwidth, $header_text, $assignment,
 1871: 					   $courseidinfo, $name);
 1872:     my $topmargintoinsert = '';
 1873:     if ($topmargin ne '0') {$topmargintoinsert='\setlength{\topmargin}{'.$topmargin.'}';}
 1874:     my $fancypagestatement='';
 1875:     if ($numberofcolumns eq '2') {
 1876: 	$fancypagestatement="\\fancyhead{}\\fancyhead[LO]{$header_text}";
 1877:     } else {
 1878: 	$fancypagestatement="\\rhead{}\\chead{}\\lhead{$header_text}";
 1879:     }
 1880:     if ($layout eq 'album') {
 1881: 	    $text =~ s/\\begin\{document}/\\setlength{\\oddsidemargin}{$oddoffset}\\setlength{\\evensidemargin}{$evenoffset}$topmargintoinsert\n\\setlength{\\textwidth}{$textwidth}\\setlength{\\textheight}{$textheight}\\setlength{\\textfloatsep}{8pt plus 2\.0pt minus 4\.0pt}\n\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\\usepackage{fancyhdr}\\addtolength{\\headheight}{\\baselineskip}\n\\pagestyle{fancy}$fancypagestatement\\usepackage{booktabs}\\begin{document}\\voffset=-0\.8 cm\\setcounter{page}{1}\n /;
 1882:     } elsif ($layout eq 'book') {
 1883: 	if ($choice ne 'All class print') { 
 1884: 	    $text =~ s/\\begin\{document}/\\textheight $textheight\\oddsidemargin = $evenoffset\\evensidemargin = $evenoffset $topmargintoinsert\n\\textwidth= $textwidth\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\n\\renewcommand{\\ref}{\\keephidden\}\\usepackage{fancyhdr}\\addtolength{\\headheight}{\\baselineskip}\\pagestyle{fancy}$fancypagestatement\\usepackage{booktabs}\\begin{document}\n\\voffset=-0\.8 cm\\setcounter{page}{1}\n/;
 1885: 	} else {
 1886: 	    $text =~ s/\\pagestyle\{fancy}\\rhead\{}\\chead\{}\s*\\begin\{document}/\\textheight = $textheight\\oddsidemargin = $evenoffset\n\\evensidemargin = $evenoffset $topmargintoinsert\\textwidth= $textwidth\\newlength{\\minipagewidth}\n\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\\renewcommand{\\ref}{\\keephidden\}\\pagestyle{fancy}\\rhead{}\\chead{}\\usepackage{booktabs}\\begin{document}\\voffset=-0\.8cm\n\\setcounter{page}{1}  \\vskip 5 mm\n /;
 1887: 	}
 1888: 	if ($papersize eq 'a4') {
 1889: 	    my $papersize_text;
 1890: 	    if ($perm{'pav'}) {
 1891: 		$papersize_text = '\\special{papersize=210mm,297mm}';
 1892: 	    } else {
 1893: 		$papersize_text = '\special{papersize=210mm,297mm}';
 1894: 	    }
 1895: 	    $text =~ s/(\\begin\{document})/$1$papersize_text/;
 1896: 	}
 1897:     }
 1898:     if ($tableofcontents eq 'yes') {$text=~s/(\\setcounter\{page\}\{1\})/$1 \\tableofcontents\\newpage /;}
 1899:     if ($indexlist eq 'yes') {
 1900: 	$text=~s/(\\begin\{document})/\\makeindex $1/;
 1901: 	$text=~s/(\\end\{document})/\\strut\\\\\\strut\\printindex $1/;
 1902:     }
 1903:     return $text;
 1904: }
 1905: 
 1906: 
 1907: sub page_cleanup {
 1908:     my $result = shift;	
 1909:  
 1910:     $result =~ m/\\end\{document}(\d*)$/;
 1911:     my $number_of_columns = $1;
 1912:     my $insert = '{';
 1913:     for (my $id=1;$id<=$number_of_columns;$id++) { $insert .='l'; }
 1914:     $insert .= '}';
 1915:     $result =~ s/(\\begin\{longtable})INSERTTHEHEADOFLONGTABLE\\endfirsthead\\endhead/$1$insert/g;
 1916:     $result =~ s/&\s*REMOVETHEHEADOFLONGTABLE\\\\/\\\\/g;
 1917:     return $result,$number_of_columns;
 1918: }
 1919: 
 1920: 
 1921: sub details_for_menu {
 1922:     my ($helper)=@_;
 1923:     my $postdata=$env{'form.postdata'};
 1924:     if (!$postdata) { $postdata=$helper->{VARS}{'postdata'}; }
 1925:     my $name_of_resource = &Apache::lonnet::gettitle($postdata);
 1926:     my $symbolic = &Apache::lonnet::symbread($postdata);
 1927:     return if ( $symbolic eq '');
 1928: 
 1929:     my ($map,$id,$resource)=&Apache::lonnet::decode_symb($symbolic);
 1930:     $map=&Apache::lonnet::clutter($map);
 1931:     my $name_of_sequence = &Apache::lonnet::gettitle($map);
 1932:     if ($name_of_sequence =~ /^\s*$/) {
 1933: 	$map =~ m|([^/]+)$|;
 1934: 	$name_of_sequence = $1;
 1935:     }
 1936:     my $name_of_map = &Apache::lonnet::gettitle($env{'request.course.uri'});
 1937:     if ($name_of_map =~ /^\s*$/) {
 1938: 	$env{'request.course.uri'} =~ m|([^/]+)$|;
 1939: 	$name_of_map = $1;
 1940:     }
 1941:     return ($name_of_resource,$name_of_sequence,$name_of_map);
 1942: }
 1943: 
 1944: sub copyright_line {
 1945:     return '\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\vspace*{-2 mm}\newline\noindent{\tiny Printed from LON-CAPA\copyright MSU{\hfill} Licensed under GNU General Public License } ';
 1946: }
 1947: my $end_of_student = "\n".'\special{ps:ENDOFSTUDENTSTAMP}'."\n";
 1948: 
 1949: sub latex_corrections {
 1950:     my ($number_of_columns,$result,$selectionmade,$answer_mode) = @_;
 1951: #    $result =~ s/\\includegraphics\{/\\includegraphics\[width=\\minipagewidth\]{/g;
 1952:     my $copyright = &copyright_line();
 1953:     if ($selectionmade eq '1' || $answer_mode eq 'only') {
 1954: 	$result =~ s/(\\end\{document})/\\strut\\vskip 0 mm $copyright $end_of_student $1/;
 1955:     } else {
 1956: 	$result =~ s/(\\end\{document})/\\strut\\vspace\*{-4 mm}\\newline $copyright $end_of_student $1/;
 1957:     }
 1958:     $result =~ s/\$number_of_columns/$number_of_columns/g;
 1959:     $result =~ s/(\\end\{longtable}\s*)(\\strut\\newline\\noindent\\makebox\[\\textwidth\/$number_of_columns\]\[b\]{\\hrulefill})/$2$1/g;
 1960:     $result =~ s/(\\end\{longtable}\s*)\\strut\\newline/$1/g;
 1961: #-- LaTeX corrections     
 1962:     my $first_comment = index($result,'<!--',0);
 1963:     while ($first_comment != -1) {
 1964: 	my $end_comment = index($result,'-->',$first_comment);
 1965: 	substr($result,$first_comment,$end_comment-$first_comment+3) = '';
 1966: 	$first_comment = index($result,'<!--',$first_comment);
 1967:     }
 1968:     $result =~ s/^\s+$//gm; #remove empty lines
 1969:     #removes more than one empty space
 1970:     $result =~ s|(\s\s+)|($1=~/[\n\r]/)?"\n":" "|ge;
 1971:     $result =~ s/\\\\\s*\\vskip/\\vskip/gm;
 1972:     $result =~ s/\\\\\s*\\noindent\s*(\\\\)+/\\\\\\noindent /g;
 1973:     $result =~ s/{\\par }\s*\\\\/\\\\/gm;
 1974:     $result =~ s/\\\\\s+\[/ \[/g;
 1975:     #conversion of html characters to LaTeX equivalents
 1976:     if ($result =~ m/&(\w+|#\d+);/) {
 1977: 	$result = &character_chart($result);
 1978:     }
 1979:     $result =~ s/(\\end\{tabular})\s*\\vskip 0 mm/$1/g;
 1980:     $result =~ s/(\\begin\{enumerate})\s*\\noindent/$1/g;
 1981:     return $result;
 1982: }
 1983: 
 1984: 
 1985: sub index_table {
 1986:     my $currentURL = shift;
 1987:     my $insex_string='';
 1988:     $currentURL=~s/\.([^\/+])$/\.$1\.meta/;
 1989:     $insex_string=&Apache::lonnet::metadata($currentURL,'keywords');
 1990:     return $insex_string;
 1991: }
 1992: 
 1993: 
 1994: sub IndexCreation {
 1995:     my ($texversion,$currentURL)=@_;
 1996:     my @key_words=split(/,/,&index_table($currentURL));
 1997:     my $chunk='';
 1998:     my $st=index $texversion,'\addcontentsline{toc}{subsection}{';
 1999:     if ($st>0) {
 2000: 	for (my $i=0;$i<3;$i++) {$st=(index $texversion,'}',$st+1);}
 2001: 	$chunk=substr($texversion,0,$st+1);
 2002: 	substr($texversion,0,$st+1)=' ';
 2003:     }
 2004:     foreach my $key_word (@key_words) {
 2005: 	if ($key_word=~/\S+/) {
 2006: 	    $texversion=~s/\b($key_word)\b/$1 \\index{$key_word} /i;
 2007: 	}
 2008:     }			
 2009:     if ($st>0) {substr($texversion,0,1)=$chunk;}
 2010:     return $texversion;
 2011: }
 2012: 
 2013: sub print_latex_header {
 2014:     my $mode=shift;
 2015: 
 2016:     return &Apache::londefdef::latex_header($mode);
 2017: }
 2018: 
 2019: sub path_to_problem {
 2020:     my ($urlp,$colwidth)=@_;
 2021:     $urlp=&Apache::lonnet::clutter($urlp);
 2022: 
 2023:     my $newurlp = '';
 2024:     $colwidth=~s/\s*mm\s*$//;
 2025: #characters average about 2 mm in width
 2026:     if (length($urlp)*2 > $colwidth) {
 2027: 	my @elements = split('/',$urlp);
 2028: 	my $curlength=0;
 2029: 	foreach my $element (@elements) {
 2030: 	    if ($element eq '') { next; }
 2031: 	    if ($curlength+(length($element)*2) > $colwidth) {
 2032: 		$newurlp .=  '|\vskip -1 mm \verb|';
 2033: 		$curlength=length($element)*2;
 2034: 	    } else {
 2035: 		$curlength+=length($element)*2;
 2036: 	    }
 2037: 	    $newurlp.='/'.$element;
 2038: 	}
 2039:     } else {
 2040: 	$newurlp=$urlp;
 2041:     }
 2042:     return '{\small\noindent\verb|'.$newurlp.'|\vskip 0 mm}';
 2043: }
 2044: 
 2045: sub recalcto_mm {
 2046:     my $textwidth=shift;
 2047:     my $LaTeXwidth;
 2048:     if ($textwidth=~/(-?\d+\.?\d*)\s*cm/) {
 2049: 	$LaTeXwidth = $1*10;
 2050:     } elsif ($textwidth=~/(-?\d+\.?\d*)\s*mm/) {
 2051: 	$LaTeXwidth = $1;
 2052:     } elsif ($textwidth=~/(-?\d+\.?\d*)\s*in/) {
 2053: 	$LaTeXwidth = $1*25.4;
 2054:     }
 2055:     $LaTeXwidth.=' mm';
 2056:     return $LaTeXwidth;
 2057: }
 2058: 
 2059: sub get_textwidth {
 2060:     my ($helper,$LaTeXwidth)=@_;
 2061:     my $textwidth=$LaTeXwidth;
 2062:     if ($helper->{'VARS'}->{'pagesize.width'}=~/\d+/ &&
 2063: 	$helper->{'VARS'}->{'pagesize.widthunit'}=~/\w+/) {
 2064: 	$textwidth=&recalcto_mm($helper->{'VARS'}->{'pagesize.width'}.' '.
 2065: 				$helper->{'VARS'}->{'pagesize.widthunit'});
 2066:     }
 2067:     return $textwidth;
 2068: }
 2069: 
 2070: 
 2071: sub unsupported {
 2072:     my ($currentURL,$mode,$symb)=@_;
 2073:     if ($mode ne '') {$mode='\\'.$mode}
 2074:     my $result.= &print_latex_header($mode);
 2075:     if ($currentURL=~m|^(/adm/wrapper/)?ext/|) {
 2076: 	$currentURL=~s|^(/adm/wrapper/)?ext/|http://|;
 2077:         $currentURL=~s|^http://https://|https://|;
 2078: 	my $title=&Apache::lonnet::gettitle($symb);
 2079: 	$title = &Apache::lonxml::latex_special_symbols($title);
 2080: 	$result.=' \strut \\\\ '.$title.' \strut \\\\ '.$currentURL.' ';
 2081:     } else {
 2082: 	$result.=$currentURL;
 2083:     }
 2084:     $result.= '\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill} \end{document}';
 2085:     return $result;
 2086: }
 2087: 
 2088: #
 2089: #  Map from helper layout style to the book/album:
 2090: #
 2091: sub map_laystyle {
 2092:     my ($laystyle) = @_;
 2093:     if ($laystyle eq 'L') {
 2094: 	$laystyle='album';
 2095:     } else {
 2096: 	$laystyle='book';
 2097:     }
 2098:     return $laystyle;
 2099: }
 2100: 
 2101: sub print_page_in_course {
 2102:     my ($helper, $rparmhash, $currentURL, $resources) = @_;
 2103: 
 2104:     my %parmhash       = %$rparmhash;
 2105:     my @page_resources = @$resources;
 2106:     my $mode = $helper->{'VARS'}->{'LATEX_TYPE'};
 2107:     my $symb = $helper->{'VARS'}->{'symb'};
 2108: 
 2109: 
 2110:     my $format_from_helper = $helper->{'VARS'}->{'FORMAT'};
 2111: 
 2112: 
 2113:     my @temporary_array=split /\|/,$format_from_helper;
 2114:     my ($laystyle,$numberofcolumns,$papersize,$pdfFormFields)=@temporary_array;
 2115:     $laystyle = &map_laystyle($laystyle);
 2116:     my ($textwidth,$textheight,$oddoffset,$evenoffset) = &page_format($papersize,$laystyle,
 2117: 								      $numberofcolumns);
 2118:     my $LaTeXwidth=&recalcto_mm($textwidth); 
 2119: 
 2120: 
 2121:     if ($mode ne '') {$mode='\\'.$mode}
 2122:     my $result   =    &print_latex_header($mode);
 2123:     if ($currentURL=~m|^(/adm/wrapper/)?ext/|) {
 2124: 	$currentURL=~s|^(/adm/wrapper/)?ext/|http://|;
 2125: 	my $title=&Apache::lonnet::gettitle($symb);
 2126: 	$title = &Apache::lonxml::latex_special_symbols($title);
 2127:     } else {
 2128:         my $esc_currentURL= $currentURL;
 2129:         $esc_currentURL =~ s/_/\\_/g;
 2130: 	$result.=$esc_currentURL;
 2131:     }
 2132:     $result .= '\\\\';
 2133: 
 2134:     if ($helper->{'VARS'}->{'style_file'}=~/\w/) {
 2135: 	&Apache::lonnet::appenv({'construct.style' =>
 2136: 				$helper->{'VARS'}->{'style_file'}});
 2137:     } elsif ($env{'construct.style'}) {
 2138: 	&Apache::lonnet::delenv('construct.style');
 2139:     }
 2140: 
 2141:     # First is the overall page description.  This is then followed by the 
 2142:     # components of the page. Each of which must be printed independently.
 2143:     my $the_page = shift(@page_resources); 
 2144: 
 2145: 
 2146:     foreach my $resource (@page_resources) {
 2147: 	my $resource_src   = $resource->src(); # Essentially the URL of the resource.
 2148: 	$result           .= $resource->title() . '\\\\';
 2149: 
 2150: 	# Recurse if a .page:
 2151: 
 2152: 	if ($resource_src =~ /.page$/i) {
 2153: 	    my $navmap         = Apache::lonnavmaps::navmap->new();
 2154: 	    my @page_resources = $navmap->retrieveResources($resource_src);
 2155: 	    $result           .= &print_page_in_course($helper, $rparmhash, 
 2156: 						       $resource_src, \@page_resources);
 2157:         } elsif ($resource->ext()) {
 2158:             $result .= &unsupported($currentURL,$mode,$symb);
 2159: 	}
 2160: 	# these resources go through the XML transformer:
 2161: 
 2162: 	elsif ($resource_src =~ /\.(problem|exam|quiz|assess|survey|form|library|xml|html|htm|xhtml|xhtm)$/)  {
 2163: 
 2164: 	    my $urlp = &Apache::lonnet::clutter($resource_src);
 2165: 
 2166: 	    my %form;
 2167: 	    my %moreenv;
 2168: 
 2169: 	    &Apache::lonxml::remember_problem_counter();
 2170: 	    $moreenv{'request.filename'}=$urlp;
 2171: 	    if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {$form{'problemtype'}='exam';}
 2172: 
 2173: 	    $form{'grade_target'}  = 'tex';
 2174: 	    $form{'textwidth'}    = &get_textwidth($helper, $LaTeXwidth);
 2175: 	    $form{'pdfFormFields'} = $pdfFormFields; # 
 2176: 	    $form{'showallfoils'} = $helper->{'VARS'}->{'showallfoils'};    
 2177: 	    
 2178: 	    $form{'problem_split'}=$parmhash{'problem_stream_switch'};
 2179: 	    $form{'suppress_tries'}=$parmhash{'suppress_tries'};
 2180: 	    $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 2181: 	    $form{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
 2182: 	    $form{'print_annotations'}=$helper->{'VARS'}->{'PRINT_ANNOTATIONS'};
 2183: 	    if (($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') ||
 2184: 		($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes')) {
 2185: 		$form{'problem_split'}='yes';
 2186: 	    }
 2187: 	    my $rndseed = time;
 2188: 	    if ($helper->{'VARS'}->{'curseed'}) {
 2189: 		$rndseed=$helper->{'VARS'}->{'curseed'};
 2190: 	    }
 2191: 	    $form{'rndseed'}=$rndseed;
 2192: 	    &Apache::lonnet::appenv(\%moreenv);
 2193: 	    
 2194: 	    &Apache::lonxml::clear_problem_counter();
 2195: 
 2196: 	    my $texversion = &ssi_with_retries($urlp, $ssi_retry_count, %form);
 2197: 
 2198: 
 2199: 	    # current document with answers.. no need to encap in minipage
 2200: 	    #  since there's only one answer.
 2201: 
 2202: 	    if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 2203: 	       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 2204: 		my %answerform = %form;
 2205: 
 2206: 
 2207: 		$answerform{'problem_split'}=$parmhash{'problem_stream_switch'};
 2208: 		$answerform{'grade_target'}='answer';
 2209: 		$answerform{'answer_output_mode'}='tex';
 2210: 		$answerform{'rndseed'}=$rndseed;
 2211:                 if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {
 2212: 		    $answerform{'problemtype'}='exam';
 2213: 		}
 2214: 		$resources_printed .= $urlp.':';
 2215: 		my $answer=&ssi_with_retries($urlp,$ssi_retry_count, %answerform);
 2216: 
 2217: 		if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 2218: 		    $texversion=~s/(\\keephidden\{ENDOFPROBLEM})/$answer$1/;
 2219: 		} else {
 2220: 		    $texversion= &print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 2221: 		    if ($helper->{'VARS'}->{'construction'} ne '1') {
 2222: 			my $title = &Apache::lonnet::gettitle($helper->{'VARS'}->{'symb'});
 2223: 			$title = &Apache::lonxml::latex_special_symbols($title);
 2224: 			$texversion.='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
 2225: 			$texversion.=&path_to_problem($urlp,$LaTeXwidth);
 2226: 		    } else {
 2227: 			$texversion.='\vskip 0 mm \noindent\textbf{'.
 2228:                         &mt("Printing from Authoring Space: No Title").'}\vskip 0 mm ';
 2229: 			$texversion.=&path_to_problem($urlp,$LaTeXwidth);
 2230: 		    }
 2231: 		    $texversion.='\vskip 1 mm '.$answer.'\end{document}';
 2232: 		}
 2233: 
 2234: 
 2235: 		
 2236: 
 2237: 	    
 2238: 	    }
 2239: 	    # Print annotations.
 2240: 
 2241: 
 2242: 	    if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 2243: 		my $annotation .= &annotate($currentURL);
 2244: 		$texversion =~ s/(\\keephidden\{ENDOFPROBLEM})/$annotation$1/;
 2245: 	    }
 2246: 	    
 2247: 	    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 2248: 		$texversion=&IndexCreation($texversion,$currentURL);
 2249: 	    }
 2250: 	    if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
 2251: 		$texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$currentURL| \\strut\\\\\\strut /;
 2252: 
 2253: 	    }
 2254: 	    $texversion = &latex_header_footer_remove($texversion);
 2255: 
 2256: 	    # the first remaining line is a comment from londefdef the second
 2257: 	    # line  seems to be an extraneous \vskip 1mm \\\\ :
 2258:             # (imperfect removal from header_footer_remove?
 2259: 
 2260: 	    $texversion =~ s/\\vskip 1mm \\\\\\\\//;
 2261: 
 2262: 	    $result .= $texversion;
 2263: 	    if ($currentURL=~m/\.page\s*$/) {
 2264: 		($result,$numberofcolumns) = &page_cleanup($result);
 2265: 	    }
 2266: 	}
 2267:     }
 2268: 
 2269:     $result.= '\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill} \end{document}';
 2270:     return $result;
 2271: }
 2272: 
 2273: 
 2274: #
 2275: # List of recently generated print files
 2276: #
 2277: sub recently_generated {
 2278:     my ($prtspool) = @_;
 2279:     my $output;
 2280:     my $zip_result;
 2281:     my $pdf_result;
 2282:     opendir(DIR,$prtspool);
 2283: 
 2284:     my @files = 
 2285: 	grep(/^$env{'user.name'}_$env{'user.domain'}_printout_(\d+)_.*\.(pdf|zip)$/,readdir(DIR));
 2286:     closedir(DIR);
 2287: 
 2288:     @files = sort {
 2289: 	my ($actime) = (stat($prtspool.'/'.$a))[10];
 2290: 	my ($bctime) = (stat($prtspool.'/'.$b))[10];
 2291: 	return $bctime <=> $actime;
 2292:     } (@files);
 2293: 
 2294:     foreach my $filename (@files) {
 2295: 	my ($ext) = ($filename =~ m/(pdf|zip)$/);
 2296: 	my ($cdev,$cino,$cmode,$cnlink,
 2297: 	    $cuid,$cgid,$crdev,$csize,
 2298: 	    $catime,$cmtime,$cctime,
 2299: 	    $cblksize,$cblocks)=stat($prtspool.'/'.$filename);
 2300:         my $ext_text = 'pdf' ? &mt('PDF File'):&mt('Zip File');
 2301: 	my $result=&Apache::loncommon::start_data_table_row()
 2302:                   .'<td>'
 2303:                   .'<a href="/prtspool/'.$filename.'">'.$ext_text.'</a>'
 2304:                   .'</td>'
 2305:                   .'<td>'.&Apache::lonlocal::locallocaltime($cctime).'</td>'
 2306:                   .'<td align="right">'.$csize.'</td>'
 2307:                   .&Apache::loncommon::end_data_table_row();
 2308: 	if ($ext eq 'pdf') { $pdf_result .= $result; }
 2309: 	if ($ext eq 'zip') { $zip_result .= $result; }
 2310:     }
 2311:     if ($zip_result || $pdf_result) {
 2312:         $output ='<hr />';
 2313:     }
 2314:     if ($zip_result) {
 2315: 	$output .='<h3>'.&mt('Recently generated printout zip files')."</h3>\n"
 2316:                   .&Apache::loncommon::start_data_table()
 2317:                   .&Apache::loncommon::start_data_table_header_row()
 2318:                   .'<th>'.&mt('Download').'</th>'
 2319:                   .'<th>'.&mt('Creation Date').'</th>'
 2320:                   .'<th>'.&mt('File Size (Bytes)').'</th>'
 2321:                   .&Apache::loncommon::end_data_table_header_row()
 2322:                   .$zip_result
 2323:                   .&Apache::loncommon::end_data_table();
 2324:     }
 2325:     if ($pdf_result) {
 2326: 	$output .='<h3>'.&mt('Recently generated printouts')."</h3>\n"
 2327:                   .&Apache::loncommon::start_data_table()
 2328:                   .&Apache::loncommon::start_data_table_header_row()
 2329:                   .'<th>'.&mt('Download').'</th>'
 2330:                   .'<th>'.&mt('Creation Date').'</th>'
 2331:                   .'<th>'.&mt('File Size (Bytes)').'</th>'
 2332:                   .&Apache::loncommon::end_data_table_header_row()
 2333:                   .$pdf_result
 2334:                   .&Apache::loncommon::end_data_table();
 2335:     }
 2336:     return $output;
 2337: }
 2338: 
 2339: #
 2340: #   Retrieve the hash of page breaks.
 2341: #
 2342: #  Inputs:
 2343: #    helper   - reference to helper object.
 2344: #  Outputs
 2345: #    A reference to a page break hash.
 2346: #
 2347: #
 2348: # use Data::Dumper;
 2349: # sub dump_helper_vars {
 2350: #    my ($helper) = @_;
 2351: #    my $helpervars = Dumper($helper->{'VARS'});
 2352: #    &Apache::lonnet::logthis("Dump of helper vars:\n $helpervars");
 2353: #}
 2354: 
 2355: sub get_page_breaks  {
 2356:     my ($helper) = @_;
 2357:     my %page_breaks;
 2358: 
 2359:     foreach my $break (split /\|\|\|/, $helper->{'VARS'}->{'FINISHPAGE'}) {
 2360: 	$page_breaks{$break} = 1;
 2361:     }
 2362:     return %page_breaks;
 2363: }
 2364: # 
 2365: #   Returns text to insert for any extra vskip prior to the resource.
 2366: #   Parameters:
 2367: #     helper   - Reference to the helper object driving the printout.
 2368: #     resource - Identifies the resource about to be printed.
 2369: #
 2370: #   This is done as follows:
 2371: #    POSSIBLE_RESOURCES has the list of possible resources.
 2372: #    EXTRASPACE         has the list of extra space values.
 2373: #    EXTRASPACE_UNITS   is the set of resources for which the units are
 2374: #                       mm. All others are 'in'.
 2375: #    
 2376: #    The resource is found in the POSSIBLE_RESOURCES to get the index
 2377: #    of the EXTRASPACE value.
 2378: #
 2379: #   In order to speed this up for lengthy printouts, the first time,
 2380: #   POSSIBLE_RESOURCES is turned into a look up hash and
 2381: #   EXTRASPACE is turned into an array.
 2382: #
 2383: 
 2384: 
 2385: my %possible_resources;
 2386: my %extraspace_mm;
 2387: my @extraspace;
 2388: my $skips_loaded       = 0;
 2389: 
 2390: #  Function to load the skips hash and array
 2391: 
 2392: sub load_skips {
 2393: 
 2394:     my ($helper)  = @_;
 2395: 
 2396:     #  If this is the first time, unrap the resources and extra spaces:
 2397: 
 2398:     if (!$skips_loaded) {
 2399: 	@extraspace = (split(/\|\|\|/, $helper->{'VARS'}->{'EXTRASPACE'}));
 2400: 	my @resource_list = (split(/\|\|\|/, $helper->{'VARS'}->{'POSSIBLE_RESOURCES'}));
 2401: 	my $i = 0;
 2402: 	foreach my $resource (@resource_list) {
 2403: 	    $possible_resources{$resource} = $i;
 2404: 	    $i++;
 2405: 	}
 2406: 	foreach my $mm_resource (split(/\|\|\|/, $helper->{'VARS'}->{'EXTRASPACE_UNITS'})) {
 2407: 	    $extraspace_mm{$mm_resource} = 1;
 2408: 	}
 2409: 	$skips_loaded = 1;
 2410:     }
 2411: }
 2412: 
 2413: sub get_extra_vspaces {
 2414:     my ($helper, $resource) = @_;
 2415: 
 2416:     &load_skips($helper);
 2417: 
 2418:     #  Lookup the resource in the possible resources hash.. that is the index
 2419:     # into the extraspace array that gives us either an empty string or
 2420:     # the number of mm to skip:
 2421: 
 2422:     my $index = $possible_resources{$resource};
 2423:     my $skip  = $extraspace[$index];
 2424: 
 2425:     my $result = '';
 2426:     if ($skip ne '') {
 2427: 	my $units = 'in';
 2428: 	if (defined($extraspace_mm{$resource})) {
 2429: 	    $units = 'mm';
 2430: 	}
 2431: 	$result = '\vskip '.$skip.' '.$units;
 2432:     }
 2433: 
 2434: 	
 2435:     return $result;
 2436: 
 2437: 
 2438: }
 2439: 
 2440: #
 2441: #  The resource chooser part of the helper needs more than just
 2442: #  the value of the extraspaces var to recover the value into a text
 2443: #  field option.  This sub produces the required format for the saved var:
 2444: #  specifically 
 2445: #    ||| separated fields of the form resourcename=value
 2446: #
 2447: #  Parameters:
 2448: #    $helper     - Refers to the helper we are configuring
 2449: #  Implicit input:
 2450: #     $helper->{'VARS'}->{'EXTRASPACE'}  - the spaces helper var has the text field
 2451: #                                          value.
 2452: #     $helper->{'VARS'}->{'EXTRASPACE_UNITS'} - units for the skips (checkboxes).
 2453: #     $helper->{'VARS'}->{'POSSIBLE_RESOURCES'}  - has the list of resources. |||
 2454: #                                          separated of course.
 2455: #  Implicit outputs:
 2456: #     $env{'form.extraspace'}
 2457: #     $env{'form.extraspace_units'}
 2458: #
 2459: sub set_form_extraspace {
 2460:     my ($helper) = @_;
 2461: 
 2462:     # the most convenient way to do this is to drive from the skips arrays/hash.
 2463:     # may not be the fastest, but this is once per print request so it's not so
 2464:     # speed critical:
 2465: 
 2466:     &load_skips($helper);
 2467: 
 2468:     my $result = '';
 2469: 
 2470:     foreach my $resource (keys(%possible_resources)) {
 2471: 	my $vskip = $extraspace[$possible_resources{$resource}];
 2472: 	$result  .= $resource .'=' . $vskip . '|||';
 2473:     }
 2474: 
 2475:     $env{'form.extraspace'}  = $result;
 2476:     $env{'form.extraspace_units'} = $helper->{'VARS'}->{'EXTRASPACE_UNITS'};
 2477:     return $result;
 2478:     
 2479: }
 2480: 
 2481: #  Output a sequence (recursively if neeed)
 2482: #  from construction space.
 2483: # Parameters:
 2484: #    url     = URL of the sequence to print.
 2485: #    helper  - Reference to the helper hash.
 2486: #    form    - Copy of the format hash.
 2487: #    LaTeXWidth
 2488: # Returns:
 2489: #   Text to add to the printout.
 2490: #   NOTE if the first element of the outermost sequence
 2491: #   is itself a sequence, the outermost caller may need to
 2492: #   prefix the latex with the page headers stuff.
 2493: #
 2494: sub print_construction_sequence {
 2495:     my ($currentURL, $helper, %form, $LaTeXwidth) = @_;
 2496: 
 2497:     my $result;
 2498:     my $rndseed=time;
 2499:     if ($helper->{'VARS'}->{'curseed'}) {
 2500: 	$rndseed=$helper->{'VARS'}->{'curseed'};
 2501:     }
 2502:     my $errtext=&LONCAPA::map::mapread(&Apache::lonnet::filelocation('',$currentURL));
 2503: 
 2504:     # 
 2505:     #  These make this all support recursing for subsequences.
 2506:     #
 2507:     my @order    = @LONCAPA::map::order;
 2508:     my @resources = @LONCAPA::map::resources; 
 2509: 
 2510:     for (my $member=0;$member<=$#order;$member++) {
 2511: 	$resources[$order[$member]]=~/^([^:]*):([^:]*):/;
 2512: 	my $urlp=$2;
 2513: 	if ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library|xml|html|htm|xhtml|xhtm)$/) {
 2514: 	    my $texversion='';
 2515: 	    if ($helper->{'VARS'}->{'ANSWER_TYPE'} ne 'only') {
 2516: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 2517: 		$form{'suppress_tries'}=$parmhash{'suppress_tries'};
 2518: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 2519: 		$form{'rndseed'}=$rndseed;
 2520: 		$resources_printed .=$urlp.':';
 2521: 		$texversion=&ssi_with_retries($urlp, $ssi_retry_count, %form);
 2522: 	    }
 2523: 	    if((($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 2524: 		($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) && 
 2525: 	       ($urlp=~/$LONCAPA::assess_page_re/)) {
 2526: 		#  Don't permanently modify %$form...
 2527: 		my %answerform = %form;
 2528: 		$answerform{'grade_target'}='answer';
 2529: 		$answerform{'answer_output_mode'}='tex';
 2530: 		$answerform{'rndseed'}=$rndseed;
 2531: 		$answerform{'problem_split'}=$parmhash{'problem_stream_switch'};
 2532: 		if ($urlp=~/\/res\//) {$env{'request.state'}='published';}
 2533: 		$resources_printed .= $urlp.':';
 2534: 		my $answer=&ssi_with_retries($urlp, $ssi_retry_count, %answerform);
 2535: 		if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 2536: 		    $texversion=~s/(\\keephidden\{ENDOFPROBLEM})/$answer$1/;
 2537: 		} else {
 2538: 		    # If necessary, encapsulate answer in minipage:
 2539: 		    
 2540: 		    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 2541: 		    my $title = &Apache::lonnet::gettitle($helper->{'VARS'}->{'symb'});
 2542: 		    $title = &Apache::lonxml::latex_special_symbols($title);
 2543: 		    my $body ='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
 2544: 		    $body.=&path_to_problem($urlp,$LaTeXwidth);
 2545: 		    $body.='\vskip 1 mm '.$answer.'\end{document}';
 2546: 		    $body = &encapsulate_minipage($body);
 2547: 		    $texversion.=$body;
 2548: 		}
 2549: 	    }
 2550: 	    $texversion = &latex_header_footer_remove($texversion);
 2551: 
 2552: 	    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 2553: 		$texversion=&IndexCreation($texversion,$urlp);
 2554: 	    }
 2555: 	    if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
 2556: 		$texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$urlp| \\strut\\\\\\strut /;
 2557: 	    }
 2558: 	    $result.=$texversion;
 2559: 
 2560: 	} elsif ($urlp=~/\.(sequence|page)$/) {
 2561:  
 2562: 	    # header:
 2563: 
 2564: 	    $result.='\strut\newline\noindent Sequence/page '.$urlp.'\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent ';
 2565: 
 2566: 	    # IF sequence, recurse:
 2567: 	    
 2568: 	    if ($urlp =~ /\.sequence$/) {
 2569: 		$result .= &print_construction_sequence($urlp, 
 2570: 							$helper, %form, 
 2571: 							$LaTeXwidth);
 2572: 	    }
 2573: 	}
 2574: 	elsif ($urlp =~ /\.pdf$/i) {
 2575: 	    my $texversion;
 2576: 	    if ($member != 0) {
 2577: 		$texversion .= '\cleardoublepage';
 2578: 	    }
 2579: 
 2580: 	    $texversion .= &include_pdf($urlp);
 2581: 	    $texversion = &latex_header_footer_remove($texversion);
 2582: 	    if ($member != $#order) {
 2583: 		$texversion .= '\\ \cleardoublepage';
 2584: 	    }
 2585: 	    
 2586: 	    $result .= $texversion;
 2587: 	}
 2588:     }
 2589:     if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\begin\{document})/$1 \\fbox\{RANDOM SEED IS $rndseed\} /;}
 2590:     return $result;
 2591: }
 2592: 
 2593: #
 2594: #  Top level for generating print output.
 2595: #
 2596: #  May call print_resources if multiple resources will be printed.
 2597: #
 2598: #  The main driver is $selectionmade which reflects the type of print out
 2599: #  requested:
 2600: #   Value    Print type:
 2601: #   1        Print resource that's being looked at.
 2602: #   2        Print problems in a map or in a page.
 2603: #   3        Print pages in a map or resources in a page.
 2604: #   4        Print all problems  or all resources.
 2605: #   5        Print problems for seleted students.
 2606: #   6        Print selected problems from a folder.
 2607: #   7        Print print selected resources from some scope.
 2608: #   8        Print resources for selected students.
 2609: #
 2610: #BZ 5209
 2611: #   2        map_incomplete_problems_seq Print incomplete problems from the current
 2612: #            folder in student context.
 2613: #   5      map_incomplete_problems_people_seq Print incomplete problems from the
 2614: #            current folder in privileged context.
 2615: #    5      incomplete_problems_selpeople_course Print incomplete problems for
 2616: #            selected people from the entire course.
 2617: #
 2618: #   Item 101 has much the same processing as 8,
 2619: #
 2620: #  Differences:  Item 101, 102 require per-student filtering of the resource
 2621: #  set so that only the incomplete resources are printed.
 2622: #  For item 100, filtering was done at the helper level.
 2623: 
 2624: sub output_data {
 2625: 
 2626:     my ($r,$helper,$rparmhash) = @_;
 2627:     my %parmhash = %$rparmhash;
 2628:     $ssi_error = 0;		# This will be set nonzero by failing ssi's.
 2629:     $resources_printed = '';
 2630:     $font_size = $helper->{'VARS'}->{'fontsize'};
 2631:     my $print_type = $helper->{'VARS'}->{'PRINT_TYPE'}; # Allows textual simplification.
 2632:     my $do_postprocessing = 1;
 2633:     my $js = <<ENDPART;
 2634: <script type="text/javascript">
 2635:     var editbrowser;
 2636:     function openbrowser(formname,elementname,only,omit) {
 2637:         var url = '/res/?';
 2638:         if (editbrowser == null) {
 2639:             url += 'launch=1&';
 2640:         }
 2641:         url += 'catalogmode=interactive&';
 2642:         url += 'mode=parmset&';
 2643:         url += 'form=' + formname + '&';
 2644:         if (only != null) {
 2645:             url += 'only=' + only + '&';
 2646:         } 
 2647:         if (omit != null) {
 2648:             url += 'omit=' + omit + '&';
 2649:         }
 2650:         url += 'element=' + elementname + '';
 2651:         var title = 'Browser';
 2652:         var options = 'scrollbars=1,resizable=1,menubar=0';
 2653:         options += ',width=700,height=600';
 2654:         editbrowser = open(url,title,options,'1');
 2655:         editbrowser.focus();
 2656:     }
 2657: </script>
 2658: ENDPART
 2659: 
 2660: 
 2661:     # Breadcrumbs
 2662:     #FIXME: Choose better/different breadcrumbs?!? Links?
 2663:     my $brcrum = [{'href' => '',
 2664:                    'text' => 'Helper'}, #FIXME: Different origin possible than print out helper?
 2665:                   {'href' => '',
 2666:                    'text' => 'Preparing Printout'}];
 2667: 
 2668:     my $start_page  = &Apache::loncommon::start_page('Preparing Printout',
 2669:                                                      $js,
 2670:                                                      {'bread_crumbs' => $brcrum,});
 2671:     my $msg = &mt('Please stand by while processing your print request, this may take some time ...');
 2672: 
 2673:     $r->print($start_page."\n<p>\n$msg\n</p>\n");
 2674: 
 2675:     # fetch the pagebreaks and store them in the course environment
 2676:     # The page breaks will be pulled into the hash %page_breaks which is
 2677:     # indexed by symb and contains 1's for each break.
 2678: 
 2679:     $env{'form.pagebreaks'}  = $helper->{'VARS'}->{'FINISHPAGE'};
 2680:     &set_form_extraspace($helper);
 2681:     $env{'form.lastprinttype'} = $print_type; 
 2682:     &Apache::loncommon::store_course_settings('print',
 2683: 					      {'pagebreaks'    => 'scalar',
 2684: 					       'extraspace'    => 'scalar',
 2685: 					       'extraspace_units' => 'scalar',
 2686: 					       'lastprinttype' => 'scalar'});
 2687:     my %page_breaks  = &get_page_breaks($helper);
 2688: 
 2689:     my $format_from_helper = $helper->{'VARS'}->{'FORMAT'};
 2690:     my ($result,$selectionmade) = ('','');
 2691:     my $number_of_columns = 1; #used only for pages to determine the width of the cell
 2692:     my @temporary_array=split /\|/,$format_from_helper;
 2693:     my ($laystyle,$numberofcolumns,$papersize,$pdfFormFields)=@temporary_array;
 2694: 
 2695:     $laystyle = &map_laystyle($laystyle);
 2696:     my ($textwidth,$textheight,$oddoffset,$evenoffset) = &page_format($papersize,$laystyle,$numberofcolumns);
 2697:     my $assignment =  $env{'form.assignment'};
 2698:     my $LaTeXwidth=&recalcto_mm($textwidth); 
 2699:     my @print_array=();
 2700:     my @student_names=();
 2701: 
 2702:      
 2703:     #  Common settings for the %form has:
 2704:     # In some cases these settings get overriddent by specific cases, but the
 2705:     # settings are common enough to make it worthwhile factoring them out
 2706:     # here.
 2707:     #
 2708:     my %form;
 2709:     $form{'grade_target'} = 'tex';
 2710:     $form{'textwidth'}    = &get_textwidth($helper, $LaTeXwidth);
 2711:     $form{'pdfFormFields'} = $pdfFormFields;
 2712: 
 2713:     # If form.showallfoils is set, then request all foils be shown:
 2714:     # privilege will be enforced both by not allowing the 
 2715:     # check box selecting this option to be presnt unless it's ok,
 2716:     # and by lonresponse's priv. check.
 2717:     # The if is here because lonresponse.pm only cares that
 2718:     # showallfoils is defined, not what the value is.
 2719: 
 2720:     if ($helper->{'VARS'}->{'showallfoils'} eq "1") { 
 2721: 	$form{'showallfoils'} = $helper->{'VARS'}->{'showallfoils'};
 2722:     }
 2723:     
 2724:     if ($helper->{'VARS'}->{'style_file'}=~/\w/) {
 2725: 	&Apache::lonnet::appenv({'construct.style' =>
 2726: 				$helper->{'VARS'}->{'style_file'}});
 2727:     } elsif ($env{'construct.style'}) {
 2728: 	&Apache::lonnet::delenv('construct.style');
 2729:     }
 2730: 
 2731:     if ($print_type eq 'current_document') {
 2732:       #-- single document - problem, page, html, xml, ...
 2733: 	my ($currentURL,$cleanURL);
 2734: 
 2735: 	if ($helper->{'VARS'}->{'construction'} ne '1') {
 2736:             #prints published resource
 2737: 	    $currentURL=$helper->{'VARS'}->{'postdata'};
 2738: 	    $cleanURL=&Apache::lonenc::check_decrypt($currentURL);
 2739: 	} else {
 2740: 
 2741:             #prints resource from the construction space
 2742: 	    $currentURL=$helper->{'VARS'}->{'filename'};
 2743: 	    $cleanURL=$currentURL;
 2744: 	}
 2745: 	$selectionmade = 1;
 2746: 
 2747: 	if ($cleanURL!~m|^/adm/|
 2748: 	    && $cleanURL=~/\.(problem|exam|quiz|assess|survey|form|library|xml|html|htm|xhtml|xhtm)$/) {
 2749: 	    my $rndseed=time;
 2750: 	    my $texversion='';
 2751: 	    if ($helper->{'VARS'}->{'ANSWER_TYPE'} ne 'only') {
 2752: 		my %moreenv;
 2753: 		$moreenv{'request.filename'}=$cleanURL;
 2754:                 if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {$form{'problemtype'}='exam';}
 2755: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 2756: 		$form{'suppress_tries'}=$parmhash{'suppress_tries'};
 2757: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 2758: 		$form{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
 2759: 		$form{'print_annotations'}=$helper->{'VARS'}->{'PRINT_ANNOTATIONS'};
 2760: 		if (($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') ||
 2761: 		    ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes')) {
 2762: 		    $form{'problem_split'}='yes';
 2763: 		}
 2764: 		if ($helper->{'VARS'}->{'curseed'}) {
 2765: 		    $rndseed=$helper->{'VARS'}->{'curseed'};
 2766: 		}
 2767: 		$form{'rndseed'}=$rndseed;
 2768: 		&Apache::lonnet::appenv(\%moreenv);
 2769: 
 2770: 		&Apache::lonxml::clear_problem_counter();
 2771: 
 2772: 		$resources_printed .= $currentURL.':';
 2773: 		$texversion.=&ssi_with_retries($currentURL,$ssi_retry_count, %form);
 2774: 
 2775: 		#  Add annotations if required:
 2776: 	    
 2777: 		&Apache::lonxml::clear_problem_counter();
 2778: 
 2779: 		&Apache::lonnet::delenv('request.filename');
 2780: 	    }
 2781: 	    # current document with answers.. no need to encap in minipage
 2782: 	    #  since there's only one answer.
 2783: 
 2784: 	    if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 2785: 	       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 2786: 
 2787: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 2788: 		$form{'grade_target'}='answer';
 2789: 		$form{'answer_output_mode'}='tex';
 2790: 		$form{'rndseed'}=$rndseed;
 2791:                 if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {
 2792: 		    $form{'problemtype'}='exam';
 2793: 		}
 2794: 		$resources_printed .= $currentURL.':';
 2795: 		my $answer=&ssi_with_retries($currentURL,$ssi_retry_count, %form);
 2796: 		
 2797: 
 2798: 		if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 2799: 		    $texversion=~s/(\\keephidden\{ENDOFPROBLEM})/$answer$1/;
 2800: 		} else {
 2801: 		    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 2802: 		    if ($helper->{'VARS'}->{'construction'} ne '1') {
 2803: 			my $title = &Apache::lonnet::gettitle($helper->{'VARS'}->{'symb'});
 2804: 			$title = &Apache::lonxml::latex_special_symbols($title);
 2805: 			$texversion.='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
 2806: 			$texversion.=&path_to_problem($cleanURL,$LaTeXwidth);
 2807: 		    } else {
 2808: 			$texversion.='\vskip 0 mm \noindent\textbf{'.
 2809:                         &mt("Printing from Authoring Space: No Title").'}\vskip 0 mm ';
 2810: 
 2811: 			$texversion.=&path_to_problem($cleanURL,$LaTeXwidth);
 2812: 		    }
 2813: 		    $texversion.='\vskip 1 mm '.$answer.'\end{document}';
 2814: 		}
 2815: 
 2816: 
 2817: 		
 2818: 
 2819: 	    
 2820: 	    }
 2821: 	    # Print annotations.
 2822: 
 2823: 
 2824: 	    if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 2825: 		my $annotation .= &annotate($currentURL);
 2826: 		$texversion =~ s/(\\keephidden\{ENDOFPROBLEM})/$annotation$1/;
 2827: 	    }
 2828: 
 2829: 
 2830: 	    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 2831: 		$texversion=&IndexCreation($texversion,$currentURL);
 2832: 	    }
 2833: 	    if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
 2834: 		$texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$currentURL| \\strut\\\\\\strut /;
 2835: 
 2836: 	    }
 2837: 	    $result .= $texversion;
 2838: 	    if ($currentURL=~m/\.page\s*$/) {
 2839: 		($result,$number_of_columns) = &page_cleanup($result);
 2840: 	    }
 2841:         } elsif ($cleanURL!~m|^/adm/|
 2842: 		 && $currentURL=~/\.(sequence|page)$/ && $helper->{'VARS'}->{'construction'} eq '1') {
 2843: 	    $result .= &print_construction_sequence($currentURL, $helper, %form,
 2844: 						    $LaTeXwidth);
 2845: 	    $result .= '\end{document}';  
 2846: 	    if (!($result =~ /\\begin\{document\}/)) {
 2847: 		$result = &print_latex_header() . $result;
 2848: 	    }
 2849: 	    # End construction space sequence.
 2850: 	} elsif ($cleanURL=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) { 
 2851: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 2852: 		if ($currentURL=~/\/syllabus$/) {$currentURL=~s/\/res//;}
 2853: 		$resources_printed .= $currentURL.':';
 2854: 		my $texversion = &ssi_with_retries($currentURL, $ssi_retry_count, %form);
 2855: 		if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 2856: 		    my $annotation = &annotate($currentURL);
 2857: 		    $texversion    =~ s/(\\end\{document})/$annotation$1/;
 2858: 		}
 2859: 		$result .= $texversion;
 2860: 	} elsif ($cleanURL =~/\.tex$/) {
 2861: 	    # For this sort of print of a single LaTeX file,
 2862: 	    # We can just print the LaTeX file as it is uninterpreted in any way:
 2863: 	    #
 2864: 
 2865: 	    $result = &fetch_raw_resource($currentURL);
 2866: 	    if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 2867: 		my $annotation = &annotate($currentURL);
 2868: 		$result =~ s/(\\end\{document})/$annotation$1/;
 2869: 	    }
 2870: 
 2871: 	    $do_postprocessing = 0; # Don't massage the result.
 2872: 
 2873: 	} elsif ($cleanURL =~ /\.pdf$/i) {
 2874: 	    $result .= &include_pdf($cleanURL);
 2875: 	    $result .= '\end{document}';
 2876: 	} elsif ($cleanURL =~ /\.page$/i) { #  Print page in non construction space contexts.
 2877: 
 2878: 	    # Determine the set of resources in the map of the page:
 2879: 
 2880: 	    my $navmap         =  Apache::lonnavmaps::navmap->new();
 2881: 	    my @page_resources =  $navmap->retrieveResources($cleanURL);
 2882: 	    $result           .=  &print_page_in_course($helper, $rparmhash,
 2883: 							$cleanURL, \@page_resources);
 2884: 
 2885:        
 2886: 	} else {
 2887: 	    $result.=&unsupported($currentURL,$helper->{'VARS'}->{'LATEX_TYPE'},
 2888: 				  $helper->{'VARS'}->{'symb'});
 2889: 	}
 2890:     } elsif (($print_type eq 'map_problems')          or
 2891: 	     ($print_type eq 'map_problems_in_page')  or
 2892: 	     ($print_type eq 'map_resources_in_page') or
 2893:              ($print_type eq 'map_problems_pages')    or
 2894:              ($print_type eq 'all_problems')          or
 2895: 	     ($print_type eq 'all_resources')         or # BUGBUG
 2896: 	     ($print_type eq 'select_sequences')      or
 2897: 	     ($print_type eq 'map_incomplete_problems_seq')
 2898: 	     ) {
 2899:  
 2900:         #-- produce an output string
 2901: 	if (($print_type eq 'map_problems')                or
 2902: 	    ($print_type eq 'map_incomplete_problems_seq') or
 2903: 	    ($print_type eq 'map_problems_in_page') ) {
 2904: 	    $selectionmade = 2;
 2905: 	} elsif (($print_type eq 'map_problems_pages') or
 2906: 		 ($print_type eq 'map_resources_in_page'))
 2907: 	{
 2908: 	    $selectionmade = 3;
 2909: 	} elsif (($print_type eq 'all_problems') 
 2910: 		 ) {
 2911: 	    $selectionmade = 4;
 2912: 	} elsif ($print_type eq 'all_resources') {  #BUGBUG
 2913: 	    $selectionmade = 4;
 2914: 	} elsif ($print_type eq 'select_sequences') {
 2915: 	    $selectionmade = 7;
 2916: 	}
 2917: 
 2918: 	$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 2919: 	$form{'suppress_tries'}=$parmhash{'suppress_tries'};
 2920: 	$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 2921: 	$form{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
 2922: 	$form{'print_annotations'} = $helper->{'VARS'}->{'PRINT_ANNOTATIONS'};
 2923: 	if (($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes')   ||
 2924: 	    ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') ) {
 2925: 	    $form{'problem_split'}='yes';
 2926: 	}
 2927: 	my $flag_latex_header_remove = 'NO';
 2928: 	my $flag_page_in_sequence = 'NO';
 2929: 	my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
 2930: 	my $prevassignment='';
 2931: 
 2932: 	&Apache::lonxml::clear_problem_counter();
 2933: 
 2934: 	for (my $i=0;$i<=$#master_seq;$i++) {
 2935: 
 2936: 	    &Apache::lonenc::reset_enc();
 2937: 
 2938: 
 2939: 	    # Note due to document structure, not allowed to put \newpage
 2940: 	    # prior to the first resource
 2941: 
 2942: 	    if (defined $page_breaks{$master_seq[$i]}) {
 2943: 		if($i != 0) {
 2944: 		    $result.="\\newpage\n";
 2945: 		}
 2946: 	    }
 2947: 	    $result .= &get_extra_vspaces($helper, $master_seq[$i]);
 2948: 	    my ($sequence,$middle_thingy,$urlp)=&Apache::lonnet::decode_symb($master_seq[$i]);
 2949: 	    $urlp=&Apache::lonnet::clutter($urlp);
 2950: 	    $form{'symb'}=$master_seq[$i];
 2951: 
 2952: 	    my $assignment=&Apache::lonxml::latex_special_symbols(&Apache::lonnet::gettitle($sequence),'header'); #title of the assignment which contains this problem
 2953: 
 2954: 	    if ($selectionmade==7) {$helper->{VARS}->{'assignment'}=$assignment;}
 2955: 	    if ($i==0) {$prevassignment=$assignment;}
 2956: 	    my $texversion='';
 2957: 	    if ($urlp!~m|^/adm/|
 2958: 		&& $urlp=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
 2959:                 my $extension = $1;
 2960: 		$resources_printed .= $urlp.':';
 2961: 		&Apache::lonxml::remember_problem_counter();
 2962: 		if ($flag_latex_header_remove eq 'NO') {
 2963: 		    $texversion.=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});  # RF
 2964:                     unless (($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only') ||
 2965:                             (($i==0) &&
 2966:                              (($urlp=~/\.page$/) ||
 2967:                               ($print_type eq 'map_problems_in_page') ||
 2968:                               (($print_type eq 'map_resources_in_page') && ($extension !~ /^x?html?$/))))) {
 2969:                         $flag_latex_header_remove = 'YES';
 2970:                     }
 2971: 		}
 2972: 		$texversion.=&ssi_with_retries($urlp, $ssi_retry_count, %form);
 2973: 		if ($urlp=~/\.page$/) {
 2974: 		    ($texversion,my $number_of_columns_page) = &page_cleanup($texversion);
 2975: 		    if ($number_of_columns_page > $number_of_columns) {$number_of_columns=$number_of_columns_page;} 
 2976: 		    $texversion =~ s/\\end\{document}\d*/\\end{document}/;
 2977: 		    $flag_page_in_sequence = 'YES';
 2978: 		}
 2979: 
 2980: 		if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 2981: 		   ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 2982: 		    #  Don't permanently pervert the %form hash
 2983: 		    my %answerform = %form;
 2984: 		    $answerform{'grade_target'}='answer';
 2985: 		    $answerform{'answer_output_mode'}='tex';
 2986: 		    $resources_printed .= $urlp.':';
 2987: 
 2988: 		    &Apache::lonxml::restore_problem_counter();
 2989: 		    my $answer=&ssi_with_retries($urlp, $ssi_retry_count, %answerform);
 2990:                     if ($urlp =~ /\.page$/) {
 2991:                         $answer =~ s/\\end\{document}(\d*)$//;
 2992:                     }
 2993: 		    if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 2994:                         if ($urlp =~ /\.page$/) {
 2995:                             my @probs = split(/\\keephidden\{ENDOFPROBLEM}/,$texversion);
 2996:                             my $lastprob = pop(@probs);
 2997:                             $texversion = join('\keephidden{ENDOFPROBLEM}',@probs).
 2998:                             $answer.'\keephidden{ENDOFPROBLEM}'.$lastprob;
 2999:                         } else {
 3000:                             $texversion=~s/(\\keephidden\{ENDOFPROBLEM})/$answer$1/;
 3001:                         }
 3002: 		    } else {
 3003: 			if ($urlp=~/$LONCAPA::assess_page_re/) {
 3004: 			    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 3005: #			    $texversion =~ s/\\begin\{document}//; # FIXME
 3006: 			    my $title = &Apache::lonnet::gettitle($master_seq[$i]);
 3007: 			    $title = &Apache::lonxml::latex_special_symbols($title);
 3008: 			    my $body ='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
 3009: 			    $body   .= &path_to_problem ($urlp,$LaTeXwidth);
 3010: 			    $body   .='\vskip 1 mm '.$answer;
 3011: 			    $body    = &encapsulate_minipage($body);
 3012: 			    $texversion .= $body;
 3013: 			} else {
 3014: 			    $texversion='';
 3015: 			}
 3016: 		    }
 3017: 
 3018: 		}
 3019: 		if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 3020: 		    my $annotation .= &annotate($urlp);
 3021: 		    $texversion =~ s/(\\keephidden\{ENDOFPROBLEM})/$annotation$1/;
 3022: 		}
 3023: 
 3024: 		if ($flag_latex_header_remove ne 'NO') {
 3025: 		    $texversion = &latex_header_footer_remove($texversion);
 3026: 		} else {
 3027: 		    $texversion =~ s/\\end\{document}//;
 3028: 		}
 3029: 		if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 3030: 		    $texversion=&IndexCreation($texversion,$urlp);
 3031: 		}
 3032: 		if (($selectionmade == 4) and ($assignment ne $prevassignment)) {
 3033: 		    my $name = &get_name();
 3034: 		    my $courseidinfo = &get_course();
 3035: 		    $prevassignment=$assignment;
 3036: 		    my $header_text = $parmhash{'print_header_format'};
 3037: 		    $header_text    = &format_page_header($textwidth, $header_text,
 3038: 							  $assignment, 
 3039: 							  $courseidinfo, 
 3040: 							  $name);
 3041: 		    if ($numberofcolumns eq '1') {
 3042: 			$result .='\newpage \noindent\parbox{\minipagewidth}{\noindent\\lhead{'.$header_text.'}} \vskip 5 mm ';
 3043: 		    } else {
 3044: 			$result .='\newpage \noindent\parbox{\minipagewidth}{\noindent\\fancyhead[LO]{'.$header_text.'}} \vskip 5 mm ';
 3045: 		    }			
 3046: 		}
 3047: 		$result .= $texversion;
 3048: 		$flag_latex_header_remove = 'YES';   
 3049: 	    } elsif ($urlp=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) { 
 3050: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 3051: 		if ($urlp=~/\/syllabus$/) {$urlp=~s/\/res//;}
 3052: 		$resources_printed .= $urlp.':';
 3053: 		my $texversion = &ssi_with_retries($urlp, $ssi_retry_count, %form);
 3054: 		if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 3055: 		    my $annotation = &annotate($urlp);
 3056: 		    $texversion =~ s/(\\end\{document)/$annotation$1/;
 3057: 		}
 3058: 
 3059: 		if ($flag_latex_header_remove ne 'NO') {
 3060: 		    $texversion = &latex_header_footer_remove($texversion);
 3061: 		} else {	
 3062: 		    $texversion =~ s/\\end\{document}/\\vskip 0\.5mm\\noindent\\makebox\[\\textwidth\/\$number_of_columns\]\[b\]\{\\hrulefill\}/;
 3063: 		}
 3064: 		$result .= $texversion;
 3065: 		$flag_latex_header_remove = 'YES'; 
 3066: 	    } elsif ($urlp=~ /\.pdf$/i) {
 3067: 		if ($i > 0) {
 3068: 		    $result .= '\cleardoublepage';
 3069: 		}
 3070:                 my $texfrompdf = &include_pdf($urlp);
 3071:                 if ($flag_latex_header_remove ne 'NO') {
 3072:                     $texfrompdf = &latex_header_footer_remove($texfrompdf);
 3073:                 }
 3074:                 $result .= $texfrompdf;
 3075: 		if ($i != $#master_seq) {
 3076: 		    if ($numberofcolumns eq '1') {
 3077: 			$result .= '\newpage';
 3078: 		    } else {
 3079: 			# the \\'s seem to be needed to let LaTeX know there's something
 3080: 			# on the page since LaTeX seems to not like to clear an empty page.
 3081: 			#
 3082: 			$result .= '\\ \cleardoublepage';
 3083: 		    }
 3084: 		}
 3085: 		$flag_latex_header_remove = 'YES';
 3086: 
 3087: 	    } else {
 3088: 		$texversion=&unsupported($urlp,$helper->{'VARS'}->{'LATEX_TYPE'},
 3089: 					 $master_seq[$i]);
 3090: 		if ($flag_latex_header_remove ne 'NO') {
 3091: 		    $texversion = &latex_header_footer_remove($texversion);
 3092: 		} else {
 3093: 		    $texversion =~ s/\\end\{document}//;
 3094: 		}
 3095: 		$result .= $texversion;
 3096: 		$flag_latex_header_remove = 'YES';   
 3097: 	    }
 3098: 	    if (&Apache::loncommon::connection_aborted($r)) { 
 3099: 		last; 
 3100: 	    }
 3101: 	}
 3102: 	&Apache::lonxml::clear_problem_counter();
 3103: 	if ($flag_page_in_sequence eq 'YES') {
 3104: 	    $result =~ s/\\usepackage\{calc}/\\usepackage{calc}\\usepackage{longtable}/;
 3105: 	}	
 3106: 	$result .= '\end{document}';
 3107:      } elsif (($print_type eq 'problems_for_students')           ||
 3108: 	      ($print_type eq 'problems_for_students_from_page') ||
 3109: 	      ($print_type eq 'all_problems_students')           ||
 3110: 	      ($print_type eq 'resources_for_students')          ||
 3111: 	      ($print_type eq 'incomplete_problems_selpeople_course') ||
 3112: 	      ($print_type eq 'map_incomplete_problems_people_seq')){
 3113: 
 3114: 
 3115:      #-- prints assignments for whole class or for selected students  
 3116: 	 my $type;
 3117: 	 if (($print_type eq 'problems_for_students')           ||
 3118: 	     ($print_type eq 'problems_for_students_from_page') ||
 3119: 	     ($print_type eq 'all_problems_students')           ||
 3120: 	     ($print_type eq 'incomplete_problems_selpeople_course') ||
 3121: 	     ($print_type eq 'map_incomplete_problems_people_seq')) {
 3122: 	     $selectionmade=5;
 3123: 	     $type='problems';
 3124: 	 } elsif ($print_type eq 'resources_for_students') {
 3125: 	     $selectionmade=8;
 3126: 	     $type='resources';
 3127: 	 }
 3128: 	 my @students=split /\|\|\|/, $helper->{'VARS'}->{'STUDENTS'};
 3129: 	 #   The normal sort order is by section then by students within the
 3130: 	 #   section. If the helper var student_sort is 1, then the user has elected
 3131: 	 #   to override this and output the students by name.
 3132: 	 #    Each element of the students array is of the form:
 3133: 	 #       username:domain:section:last, first:status
 3134: 	 #    
 3135: 	 #  Note that student sort is not compatible with printing 
 3136: 	 #  1 section per pdf...so that setting overrides.
 3137: 	 #   
 3138: 	 if (($helper->{'VARS'}->{'student_sort'}    eq 1)  && 
 3139: 	     ($helper->{'VARS'}->{'SPLIT_PDFS'} ne "sections")) {
 3140: 	     @students = sort compare_names  @students;
 3141: 	 } else {
 3142: 	     @students = sort compare_sections @students; 
 3143: 	 }
 3144: 	 &adjust_number_to_print($helper);
 3145: 
 3146:          if ($helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq '0' ||
 3147: 	     $helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq 'all' ) {
 3148: 	     $helper->{'VARS'}->{'NUMBER_TO_PRINT'}=$#students+1;
 3149: 	 }
 3150: 	 # If we are splitting on section boundaries, we need 
 3151: 	 # to remember that in split_on_sections and 
 3152: 	 # print all of the students in the list.
 3153: 	 #
 3154: 	 my $split_on_sections = 0;
 3155: 	 if ($helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq 'section') {
 3156: 	     $split_on_sections = 1;
 3157: 	     $helper->{'VARS'}->{'NUMBER_TO_PRINT'} = $#students+1;
 3158: 	 }
 3159: 	 my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
 3160: 
 3161:          my $map;
 3162:          if ($helper->{VARS}->{'symb'}) {
 3163:              ($map, my $id, my $resource) =
 3164:                  &Apache::lonnet::decode_symb($helper->{VARS}->{'symb'});
 3165:          }
 3166: 
 3167: 	 #loop over students
 3168: 
 3169:  	 my $flag_latex_header_remove = 'NO';
 3170: 	 my %moreenv;
 3171:          $moreenv{'instructor_comments'}='hide';
 3172: 	 $moreenv{'textwidth'}=&get_textwidth($helper,$LaTeXwidth);
 3173: 	 $moreenv{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
 3174: 	 $moreenv{'print_annotations'} = $helper->{'VARS'}->{'PRINT_ANNOTATIONS'};
 3175: 	 $moreenv{'problem_split'}    = $parmhash{'problem_stream_switch'};
 3176: 	 $moreenv{'suppress_tries'}   = $parmhash{'suppress_tries'};
 3177: 	 if (($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes')  ||
 3178: 	     ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes')) {
 3179: 	     $moreenv{'problem_split'}='yes';
 3180: 	 }
 3181: 	 my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,$#students+1);
 3182: 	 my $student_counter=-1;
 3183: 	 my $i = 0;
 3184: 	 my $last_section = (split(/:/,$students[0]))[2];
 3185:          my $nohidemap;
 3186:          if ($perm{'pav'} && $perm{'vgr'}) {
 3187:              $nohidemap = 1;
 3188:          }
 3189: 	 foreach my $person (@students) {
 3190:              my $duefile="/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
 3191: 	     if (-e $duefile) {
 3192: 		 my $temp_file = Apache::File->new('>>'.$duefile);
 3193: 		 print $temp_file "1969\n";
 3194: 	     }
 3195: 	     $student_counter++;
 3196: 	     if ($split_on_sections) {
 3197: 		 my $this_section = (split(/:/,$person))[2];
 3198: 		 if ($this_section ne $last_section) {
 3199: 		     $i++;
 3200: 		     $last_section = $this_section;
 3201: 		 }
 3202: 	     } else {
 3203: 		 $i=int($student_counter/$helper->{'VARS'}{'NUMBER_TO_PRINT'});
 3204: 	     }
 3205: 	     my $actual_seq = master_seq_to_person_seq($map, \@master_seq,
 3206:                                                        $person, undef, $nohidemap);
 3207: 	     my ($output,$fullname, $printed)=&print_resources($r,$helper,
 3208: 						     $person,$type,
 3209: 						     \%moreenv,  $actual_seq,
 3210: 						     $flag_latex_header_remove,
 3211: 						     $LaTeXwidth);
 3212: 	     $resources_printed .= ":";
 3213: 	     $print_array[$i].=$output;
 3214: 	     $student_names[$i].=$person.':'.$fullname.'_END_';
 3215: #	     &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,&mt('last student').' '.$fullname);
 3216: 	     &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
 3217: 	     $flag_latex_header_remove = 'YES';
 3218: 	     if (&Apache::loncommon::connection_aborted($r)) { last; }
 3219: 	 }
 3220: 	 &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
 3221: 	 $result .= $print_array[0].'  \end{document}';
 3222:      } elsif (($print_type eq 'problems_for_anon')      ||
 3223: 	      ($print_type eq 'problems_for_anon_page') ||
 3224: 	      ($print_type eq 'resources_for_anon')  ) { 
 3225: 	 my $cdom =$env{'course.'.$env{'request.course.id'}.'.domain'};
 3226: 	 my $cnum =$env{'course.'.$env{'request.course.id'}.'.num'};
 3227: 	 my $num_todo=$helper->{'VARS'}->{'NUMBER_TO_PRINT_TOTAL'};
 3228: 	 my $code_name=$helper->{'VARS'}->{'ANON_CODE_STORAGE_NAME'};
 3229: 	 my $old_name=$helper->{'VARS'}->{'REUSE_OLD_CODES'};
 3230: 	 my $single_code = $helper->{'VARS'}->{'SINGLE_CODE'};
 3231: 	 my $selected_code = $helper->{'VARS'}->{'CODE_SELECTED_FROM_LIST'};
 3232: 	 my $code_option=$helper->{'VARS'}->{'CODE_OPTION'};
 3233:          my @lines = &Apache::grades::get_scantronformat_file();
 3234: 	 my ($code_type,$code_length,$bubbles_per_row)=('letter',6,10);
 3235: 	 foreach my $line (@lines) {
 3236:              chomp($line);
 3237: 	     my ($name,$type,$length,$bubbles_per_item) = 
 3238:                  (split(/:/,$line))[0,2,4,17];
 3239: 	     if ($name eq $code_option) {
 3240: 		 $code_length=$length;
 3241: 		 if ($type eq 'number') { $code_type = 'number'; }
 3242:                  chomp($bubbles_per_item); 
 3243:                  if (($bubbles_per_item ne '') && ($bubbles_per_item > 0)) {
 3244:                      $bubbles_per_row = $bubbles_per_item; 
 3245:                  }
 3246: 	     }
 3247: 	 }
 3248:          my ($randomorder,$randompick,$map);
 3249:          if ($helper->{VARS}{'symb'}) {
 3250:              ($map, my $id, my $resource) =
 3251:                  &Apache::lonnet::decode_symb($helper->{VARS}{'symb'});
 3252:              my $navmap = Apache::lonnavmaps::navmap->new();
 3253:              if (defined($navmap)) {
 3254:                  if ($map) {
 3255:                      my $mapres = $navmap->getResourceByUrl($map);
 3256:                      $randomorder = $mapres->randomorder();
 3257:                      $randompick = $mapres->randompick();
 3258:                  }
 3259:              }
 3260:          }
 3261: 	 my %moreenv = ('textwidth' => &get_textwidth($helper,$LaTeXwidth));
 3262: 	 $moreenv{'problem_split'}    = $parmhash{'problem_stream_switch'};
 3263:          $moreenv{'instructor_comments'}='hide';
 3264:          $moreenv{'bubbles_per_row'} = $bubbles_per_row;
 3265: 	 my $seed=time+($$<<16)+($$);
 3266: 	 my @allcodes;
 3267: 	 if ($old_name) {
 3268: 	     my %result=&Apache::lonnet::get('CODEs',
 3269: 					     [$old_name,"type\0$old_name"],
 3270: 					     $cdom,$cnum);
 3271: 	     $code_type=$result{"type\0$old_name"};
 3272: 	     @allcodes=split(',',$result{$old_name});
 3273: 	     $num_todo=scalar(@allcodes);
 3274: 	 } elsif ($selected_code) { # Selection value is always numeric.
 3275: 	     $num_todo = 1;
 3276: 	     @allcodes = ($selected_code);
 3277: 	 } elsif ($single_code) {
 3278: 
 3279: 	     $num_todo    = 1;	# Unconditionally one code to do.
 3280: 	     # If an alpha code have to convert to numbers so it can be
 3281: 	     # converted back to letters again :-)
 3282: 	     #
 3283: 	     if ($code_type ne 'number') {
 3284: 		 $single_code = &letters_to_num($single_code);
 3285: 	     }
 3286: 	     @allcodes = ($single_code);
 3287: 	 } else {
 3288: 	     my %allcodes;
 3289: 	     srand($seed);
 3290: 	     for (my $i=0;$i<$num_todo;$i++) {
 3291: 		 $moreenv{'CODE'}=&get_CODE(\%allcodes,$i,$seed,$code_length,
 3292: 					    $code_type);
 3293: 	     }
 3294:              $code_name =~ s/^\s+//;
 3295:              $code_name =~ s/\s+$//;
 3296: 	     if ($code_name) {
 3297: 		 &Apache::lonnet::put('CODEs',
 3298: 				      {
 3299: 					$code_name =>join(',',keys(%allcodes)),
 3300: 					"type\0$code_name" => $code_type
 3301: 				      },
 3302: 				      $cdom,$cnum);
 3303: 	     }
 3304: 	     @allcodes=keys(%allcodes);
 3305: 	 }
 3306: 	 my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
 3307: 	 my ($type) = split(/_/,$print_type);
 3308: 	 &adjust_number_to_print($helper);
 3309: 	 my $number_per_page=$helper->{'VARS'}->{'NUMBER_TO_PRINT'};
 3310: 	 if ($number_per_page eq '0' || $number_per_page eq 'all'
 3311: 	     || $number_per_page eq 'section') {
 3312: 	     $number_per_page=$num_todo > 0 ? $num_todo : 1;
 3313: 	 }
 3314: 	 my $flag_latex_header_remove = 'NO'; 
 3315: 	 my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,$num_todo);
 3316: 	 my $count=0;
 3317:          my $nohidemap;
 3318:          if ($perm{'pav'} && $perm{'vgr'}) {
 3319:              $nohidemap = 1;
 3320:          }
 3321: 	 foreach my $code (sort(@allcodes)) {
 3322: 	     my $file_num=int($count/$number_per_page);
 3323: 	     if ($code_type eq 'number') { 
 3324: 		 $moreenv{'CODE'}=$code;
 3325: 	     } else {
 3326: 		 $moreenv{'CODE'}=&num_to_letters($code);
 3327: 	     }
 3328:              my $actual_seq = \@master_seq;
 3329:              if ($randomorder || $randompick) {
 3330:                  $env{'form.CODE'} = $moreenv{'CODE'};
 3331:                  $actual_seq = master_seq_to_person_seq($map, \@master_seq,
 3332:                                                         undef,
 3333:                                                         $moreenv{'CODE'}, $nohidemap);
 3334:                  delete($env{'form.CODE'});
 3335:              }
 3336: 	     my ($output,$fullname, $printed)=
 3337: 		 &print_resources($r,$helper,'anonymous',$type,\%moreenv,
 3338: 				  $actual_seq,$flag_latex_header_remove,
 3339: 				  $LaTeXwidth);
 3340: 	     $resources_printed .= ":";
 3341: 	     $print_array[$file_num].=$output;
 3342: 	     &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
 3343: 				       &mt('last assignment').' '.$fullname);
 3344: 	     $flag_latex_header_remove = 'YES';
 3345: 	     $count++;
 3346: 	     if (&Apache::loncommon::connection_aborted($r)) { last; }
 3347: 	 }
 3348: 	 &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
 3349: 	 $result .= $print_array[0].'  \end{document}';
 3350:      } elsif ($print_type eq 'problems_from_directory') {      
 3351:     #prints selected problems from the subdirectory 
 3352: 	$selectionmade = 6;
 3353:         my @list_of_files=split /\|\|\|/, $helper->{'VARS'}->{'FILES'};
 3354: 	@list_of_files=sort @list_of_files;
 3355: 	my $flag_latex_header_remove = 'NO'; 
 3356: 	my $rndseed=time;
 3357: 	if ($helper->{'VARS'}->{'curseed'}) {
 3358: 	    $rndseed=$helper->{'VARS'}->{'curseed'};
 3359: 	}
 3360: 	for (my $i=0;$i<=$#list_of_files;$i++) {
 3361: 
 3362: 	    &Apache::lonenc::reset_enc();
 3363: 
 3364: 	    my $urlp = $list_of_files[$i];
 3365: 	    $urlp=~s|//|/|;
 3366: 	    if ($urlp=~/\//) {
 3367: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 3368: 		$form{'rndseed'}=$rndseed;
 3369: 		$urlp =~ s|^$Apache::lonnet::perlvar{'lonDocRoot'}||;
 3370: 		$resources_printed .= $urlp.':';
 3371: 		my $texversion=&ssi_with_retries($urlp, $ssi_retry_count, %form);
 3372: 		if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 3373: 		   ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 3374: 		    #  Don't permanently pervert %form:
 3375: 		    my %answerform = %form;
 3376: 		    $answerform{'grade_target'}='answer';
 3377: 		    $answerform{'answer_output_mode'}='tex';
 3378: 		    $answerform{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 3379: 		    $answerform{'rndseed'}=$rndseed;
 3380: 		    $resources_printed .= $urlp.':';
 3381: 		    my $answer=&ssi_with_retries($urlp, $ssi_retry_count, %answerform);
 3382: 		    if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 3383: 			$texversion=~s/(\\keephidden\{ENDOFPROBLEM})/$answer$1/;
 3384: 		    } else {
 3385: 			$texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 3386: 			if ($helper->{'VARS'}->{'construction'} ne '1') {
 3387: 			    $texversion.='\vskip 0 mm \noindent ';
 3388: 			    $texversion.=&path_to_problem ($urlp,$LaTeXwidth);
 3389: 			} else {
 3390: 			    $texversion.='\vskip 0 mm \noindent\textbf{'.
 3391:                                          &mt("Printing from Authoring Space: No Title").'}\vskip 0 mm ';
 3392: 			    $texversion.=&path_to_problem ($urlp,$LaTeXwidth);
 3393: 			}
 3394: 			$texversion.='\vskip 1 mm '.$answer.'\end{document}';
 3395: 		    }
 3396: 		}
 3397:                 #this chunk is responsible for printing the path to problem
 3398: 
 3399: 		my $newurlp=&path_to_problem($urlp,$LaTeXwidth);
 3400: 		$texversion =~ s/(\\begin\{minipage}\{\\textwidth})/$1 $newurlp/;
 3401: 		if ($flag_latex_header_remove ne 'NO') {
 3402: 		    $texversion = &latex_header_footer_remove($texversion);
 3403: 		} else {
 3404: 		    $texversion =~ s/\\end\{document}//;
 3405: 		}
 3406: 		if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 3407: 		    $texversion=&IndexCreation($texversion,$urlp);
 3408: 		}
 3409: 		if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
 3410: 		    $texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$urlp| \\strut\\\\\\strut /;
 3411: 		    
 3412: 		}
 3413: 		$result .= $texversion;
 3414: 	    }
 3415: 	    $flag_latex_header_remove = 'YES';  
 3416: 	}
 3417: 	if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\typeout)/ RANDOM SEED IS $rndseed $1/;}
 3418: 	$result .= '\end{document}';      	
 3419:     }
 3420: #-------------------------------------------------------- corrections for the different page formats
 3421: 
 3422:     # Only post process if that has not been turned off e.g. by a raw latex resource.
 3423: 
 3424:     if ($do_postprocessing) {
 3425: 	$result = &page_format_transformation($papersize,
 3426: 					      $laystyle,$numberofcolumns,
 3427: 					      $print_type,$result,
 3428: 					      $helper->{VARS}->{'assignment'},
 3429: 					      $helper->{'VARS'}->{'TABLE_CONTENTS'},
 3430: 					      $helper->{'VARS'}->{'TABLE_INDEX'},
 3431: 					      $selectionmade);
 3432: 	$result = &latex_corrections($number_of_columns,$result,$selectionmade,
 3433: 				     $helper->{'VARS'}->{'ANSWER_TYPE'});
 3434: 	#if ($numberofcolumns == 1) {
 3435: 	$result =~ s/\\textwidth\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\textwidth= $helper->{'VARS'}->{'pagesize.width'} $helper->{'VARS'}->{'pagesize.widthunit'} /;
 3436: 	$result =~ s/\\textheight\s*=?\s*-?\d*\.?\d*\s*(cm|mm|in)/\\textheight $helper->{'VARS'}->{'pagesize.height'} $helper->{'VARS'}->{'pagesize.heightunit'} /;
 3437: 	$result =~ s/\\evensidemargin\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\evensidemargin= $helper->{'VARS'}->{'pagesize.lmargin'} $helper->{'VARS'}->{'pagesize.lmarginunit'} /;
 3438: 	$result =~ s/\\oddsidemargin\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\oddsidemargin= $helper->{'VARS'}->{'pagesize.lmargin'} $helper->{'VARS'}->{'pagesize.lmarginunit'} /;
 3439: 	#}
 3440:     }
 3441: 
 3442:     # Set URLback so we can provide a link back to the resource and to change options.
 3443:     # (Since the browser back button does not currently work with https,
 3444:     # the back link is useful even when there is an easy-to-miss LON-CAPA back button.)
 3445: 
 3446:     my $URLback=''; #link to original document
 3447:     if ($helper->{'VARS'}->{'construction'} eq '1') {
 3448: 	$URLback=$helper->{'VARS'}->{'filename'};
 3449:     } elsif ($helper->{VARS}{'symb'}) {
 3450:         my ($map, $id, $url) = &Apache::lonnet::decode_symb($helper->{VARS}{'symb'});
 3451:         $url = &Apache::lonnet::clutter($url);
 3452:         if ($env{'request.enc'}) {
 3453:             $url = &Apache::lonenc::encrypted($url); 
 3454:         }
 3455:         if ($url ne '') {
 3456:             $URLback = $url.(($url =~ /\?/) ? '&amp;':'?').'symb='.$helper->{VARS}{'symb'};
 3457:         }
 3458:     }
 3459:     #
 3460:     # Final adjustment of the font size:
 3461:     #
 3462: 
 3463:     $result = set_font_size($result);
 3464: 
 3465:     # Insert any babel headers required.
 3466: 
 3467:     $result       = &collect_languages($result);
 3468: 
 3469: 
 3470: #-- writing .tex file in prtspool 
 3471:     my $temp_file;
 3472:     my $identifier = &Apache::loncommon::get_cgi_id();
 3473:     my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout_$identifier.tex";
 3474:     if (!($#print_array>0)) { 
 3475:        unless ($temp_file = Apache::File->new('>'.$filename)) {
 3476: 	  $r->log_error("Couldn't open $filename for output $!");
 3477: 	  return SERVER_ERROR; 
 3478:        }
 3479:        print $temp_file $result;
 3480:        my $begin=index($result,'\begin{document}',0);
 3481:        my $inc=substr($result,0,$begin+16); 
 3482:     } else {
 3483:        my $begin=index($result,'\begin{document}',0);
 3484:        my $inc=substr($result,0,$begin+16);
 3485:        for (my $i=0;$i<=$#print_array;$i++) {
 3486: 	  if ($i==0) {
 3487: 	      $print_array[$i]=$result;
 3488: 	  } else {
 3489: 	      $print_array[$i].='\end{document}';
 3490: 	      $print_array[$i] = 
 3491: 		&latex_corrections($number_of_columns,$print_array[$i],
 3492: 				   $selectionmade, 
 3493: 				   $helper->{'VARS'}->{'ANSWER_TYPE'});
 3494: 	    
 3495: 	      my $anobegin=index($print_array[$i],'\setcounter{page}',0);
 3496: 	      substr($print_array[$i],0,$anobegin)='';
 3497: 	      $print_array[$i]=$inc.$print_array[$i];
 3498: 	  }
 3499: 	  my $temp_file;
 3500: 	  my $newfilename=$filename;
 3501: 	  my $num=$i+1;
 3502: 	  $newfilename =~s/\.tex$//; 
 3503: 	  $newfilename=sprintf("%s_%03d.tex",$newfilename, $num);
 3504: 	  unless ($temp_file = Apache::File->new('>'.$newfilename)) {
 3505: 	      $r->log_error("Couldn't open $newfilename for output $!");
 3506: 	      return SERVER_ERROR; 
 3507: 	  }
 3508: 	  print $temp_file $print_array[$i];
 3509:        }
 3510:     }
 3511:     my $student_names='';
 3512:     if ($#print_array>0) {
 3513:         for (my $i=0;$i<=$#print_array;$i++) {
 3514:   	  $student_names.=$student_names[$i].'_ENDPERSON_';
 3515: 	}
 3516:     } else {
 3517: 	if ($#student_names>-1) {
 3518: 	   $student_names=$student_names[0].'_ENDPERSON_';
 3519: 	} else {
 3520:            my $fullname = &get_name($env{'user.name'},$env{'user.domain'});
 3521: 	   $student_names=join(':',$env{'user.name'},$env{'user.domain'},
 3522: 				    $env{'request.course.sec'},$fullname).
 3523: 					'_ENDPERSON_'.'_END_';
 3524: 	}
 3525:      }
 3526: 	
 3527:      # logic for now is too complex to trace if this has been defined
 3528:      #  yet.
 3529:      my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 3530:      my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 3531:      &Apache::lonnet::appenv({'cgi.'.$identifier.'.file'   => $filename,
 3532: 				'cgi.'.$identifier.'.layout'  => $laystyle,
 3533: 				'cgi.'.$identifier.'.numcol'  => $numberofcolumns,
 3534: 				'cgi.'.$identifier.'.paper'  => $papersize,
 3535: 				'cgi.'.$identifier.'.selection' => $selectionmade,
 3536: 				'cgi.'.$identifier.'.tableofcontents' => $helper->{'VARS'}->{'TABLE_CONTENTS'},
 3537: 				'cgi.'.$identifier.'.tableofindex' => $helper->{'VARS'}->{'TABLE_INDEX'},
 3538: 				'cgi.'.$identifier.'.role' => $perm{'pav'},
 3539: 				'cgi.'.$identifier.'.numberoffiles' => $#print_array,
 3540: 				'cgi.'.$identifier.'.studentnames' => $student_names,
 3541: 				'cgi.'.$identifier.'.backref' => &escape($URLback),});
 3542:     &Apache::lonnet::appenv({"cgi.$identifier.user"    => $env{'user.name'},
 3543: 				"cgi.$identifier.domain"  => $env{'user.domain'},
 3544: 				"cgi.$identifier.courseid" => $cnum, 
 3545: 				"cgi.$identifier.coursedom" => $cdom, 
 3546: 				"cgi.$identifier.resources" => $resources_printed});
 3547: 	
 3548:     my $end_page = &Apache::loncommon::end_page();
 3549:     my $continue_text = &mt('Continue');
 3550:     # If there's been an unrecoverable SSI error, report it to the user
 3551:     if ($ssi_error) {
 3552:         my $helpurl = &Apache::loncommon::top_nav_help('Helpdesk');
 3553:         $r->print('<br /><p class="LC_error">'.&mt('An unrecoverable network error occurred:').'</p><p>'.
 3554:                   &mt('At least one of the resources you chose to print could not be rendered due to an unrecoverable error when communicating with a server:').
 3555:                   '<br />'.$ssi_last_error_resource.'<br />'.$ssi_last_error.
 3556:                   '</p><p>'.&mt('You can continue using the link provided below, but make sure to carefully inspect your output file! The errors will be marked in the file.').'<br />'.
 3557:                   &mt('You may be able to reprint the individual resources for which this error occurred, as the issue may be temporary.').
 3558:                   '<br />'.&mt('If the error persists, please contact the [_1] for assistance.',$helpurl).'</p><p>'.
 3559:                   &mt('We apologize for the inconvenience.').'</p>'.
 3560:                   '<a href="/cgi-bin/printout.pl?'.$identifier.'">'.$continue_text.'</a>'.$end_page);
 3561:     } else {
 3562: 	$r->print(<<FINALEND);
 3563: <br />
 3564: <meta http-equiv="Refresh" content="0; url=/cgi-bin/printout.pl?$identifier" />
 3565: <a href="/cgi-bin/printout.pl?$identifier">$continue_text</a>
 3566: $end_page
 3567: FINALEND
 3568:     }                                     # endif ssi errors.
 3569: }
 3570: 
 3571: 
 3572: sub get_CODE {
 3573:     my ($all_codes,$num,$seed,$size,$type)=@_;
 3574:     my $max='1'.'0'x$size;
 3575:     my $newcode;
 3576:     while(1) {
 3577: 	$newcode=sprintf("%0".$size."d",int(rand($max)));
 3578: 	if (!exists($$all_codes{$newcode})) {
 3579: 	    $$all_codes{$newcode}=1;
 3580: 	    if ($type eq 'number' ) {
 3581: 		return $newcode;
 3582: 	    } else {
 3583: 		return &num_to_letters($newcode);
 3584: 	    }
 3585: 	}
 3586:     }
 3587: }
 3588: 
 3589: sub print_resources {
 3590:     my ($r,$helper,$person,$type,$moreenv,$master_seq,$remove_latex_header,
 3591: 	$LaTeXwidth)=@_;
 3592:     my $current_output = ''; 
 3593:     my $printed = '';
 3594:     my ($username,$userdomain,$usersection) = split /:/,$person;
 3595:     my $fullname = &get_name($username,$userdomain);
 3596:     my $namepostfix = "\\\\";	# Both anon and not anon should get the same vspace.
 3597: 
 3598: 
 3599:     #
 3600:     # Figure out if we need to filter the output by
 3601:     # the incomplete problems for that person
 3602:     #
 3603:     my $print_type = $helper->{'VARS'}->{'PRINT_TYPE'};
 3604:     my $print_incomplete = 0;
 3605:     if (($print_type eq 'map_incomplete_problems_people_seq')   ||
 3606: 	($print_type eq 'incomplete_problems_selpeople_course')) {
 3607: 	$print_incomplete = 1;
 3608:     }
 3609:     if ($person eq 'anonymous') {
 3610: 	$namepostfix .=&mt('Name:')." ";
 3611: 	$fullname = "CODE - ".$moreenv->{'CODE'};
 3612:     }
 3613: 
 3614:     #  Fullname may have special latex characters that need \ prefixing:
 3615:     #
 3616: 
 3617:     my $i           = 0;
 3618:     my $actually_printed = 0;	# Count of resources printed.
 3619:     #goes through all resources, checks if they are available for 
 3620:     #current student, and produces output   
 3621: 
 3622:     &Apache::lonxml::clear_problem_counter();
 3623:     my %page_breaks  = &get_page_breaks($helper);
 3624:     my $columns_in_format = (split(/\|/,$helper->{'VARS'}->{'FORMAT'}))[1];
 3625:     #
 3626:     #   end each student with a 
 3627:     #   Special that allows the post processor to even out the page
 3628:     #   counts later.  Nasty problem this... it would be really
 3629:     #   nice to put the special in as a postscript comment
 3630:     #   e.g. \special{ps:\ENDOFSTUDENTSTAMP}  unfortunately,
 3631:     #   The special gets passed the \ and dvips puts it in the output file
 3632:     #   so we will just rely on prntout.pl to strip  ENDOFSTUDENTSTAMP from the
 3633:     #   postscript.  Each ENDOFSTUDENTSTAMP will go on a line by itself.
 3634:     #
 3635: 
 3636:     my $syllabus_first = 0;
 3637:     my $current_assignment = "";
 3638:     my $assignment;
 3639:     my $courseidinfo = &get_course();
 3640:     my $possprint = scalar(@{$master_seq});
 3641: 
 3642:     foreach my $curresline (@{$master_seq})  {
 3643: 	if (defined $page_breaks{$curresline}) {
 3644: 	    if($i != 0) {
 3645: 		$current_output.= "\\newpage\n";
 3646: 	    }
 3647: 	}
 3648: 	$current_output .= &get_extra_vspaces($helper, $curresline);
 3649: 	$i++;
 3650: 	my ($map,$id,$res_url) = &Apache::lonnet::decode_symb($curresline);
 3651: 
 3652: 	# See if we need to emit a new header:
 3653: 
 3654: 	if ( !($type eq 'problems' && 
 3655: 	       ($curresline!~ m/$LONCAPA::assess_page_re/)) ) {
 3656: 	    if ($print_incomplete && !&incomplete($username, $userdomain, $res_url)) {
 3657: 		next;
 3658: 	    }
 3659: 	    $actually_printed++; # we're going to print one.
 3660: 
 3661: 	    if (&Apache::lonnet::allowed('bre',$res_url)) {
 3662: 		if ($res_url!~m|^ext/|
 3663: 		    && $res_url=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
 3664: 		    $printed .= $curresline.':';
 3665: 		    &Apache::lonxml::remember_problem_counter();    
 3666: 
 3667: 		    my $rendered = &get_student_view_with_retries($curresline,$ssi_retry_count,$username,$userdomain,$env{'request.course.id'},'tex',$moreenv);
 3668:                     if ($res_url =~ /\.page$/) {
 3669:                         if ($remove_latex_header eq 'NO') {
 3670:                             if (!($rendered =~ /\\begin\{document\}/)) {
 3671:                                 $rendered = &print_latex_header().$rendered;
 3672:                             }
 3673:                         }
 3674: ;
 3675:                         if ($remove_latex_header eq 'YES') {
 3676:                             $rendered = &latex_header_footer_remove($rendered);
 3677:                         } else {
 3678:                             $rendered =~ s/\\end\{document}\d*//;
 3679:                         }
 3680:                     }
 3681: 		    if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 3682: 		       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 3683: 			#   Use a copy of the hash so we don't pervert it on future loop passes.
 3684: 			my %answerenv = %{$moreenv};
 3685: 			$answerenv{'answer_output_mode'}='tex';
 3686: 
 3687: 
 3688: 			$answerenv{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 3689: 			
 3690: 			&Apache::lonxml::restore_problem_counter();
 3691: 
 3692: 			my $ansrendered = &Apache::loncommon::get_student_answers($curresline,$username,$userdomain,$env{'request.course.id'},%answerenv);
 3693: 
 3694: 			if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 3695: 			    $rendered=~s/(\\keephidden\{ENDOFPROBLEM})/$ansrendered$1/;
 3696: 			} else {
 3697: 
 3698: 			    
 3699: 			    my $header =&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 3700:                             unless ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only') {
 3701:                                 $header =~ s/\\begin\{document}//;     #<<<<<
 3702:                             }
 3703: 			    my $title = &Apache::lonnet::gettitle($curresline);
 3704: 			    $title = &Apache::lonxml::latex_special_symbols($title);
 3705: 			    my $body   ='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
 3706: 			    $body     .=&path_to_problem($res_url,$LaTeXwidth);
 3707: 			    $body     .='\vskip 1 mm '.$ansrendered;
 3708: 			    $body     = &encapsulate_minipage($body);
 3709: 			    $rendered = $header.$body;
 3710: 			}
 3711: 		    }
 3712: 		    if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 3713: 			my $url = &Apache::lonnet::clutter($res_url);
 3714: 			my $annotation = &annotate($url);
 3715: 			$rendered =~  s/(\\keephidden\{ENDOFPROBLEM})/$annotation$1/;
 3716: 		    }
 3717: 		    my $junk;
 3718: 		    if ($remove_latex_header eq 'YES') {
 3719: 			$rendered = &latex_header_footer_remove($rendered);
 3720: 		    } else {
 3721: 			$rendered =~ s/\\end\{document}//;
 3722: 		    }
 3723: 		    $current_output .= $rendered;		    
 3724: 		} elsif ($res_url=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) {
 3725: 		    if ($i == 1) {
 3726: 			$syllabus_first = 1;
 3727: 		    }
 3728: 		    $printed .= $curresline.':';
 3729: 		    my $rendered = &get_student_view_with_retries($curresline,$ssi_retry_count,$username,$userdomain,$env{'request.course.id'},'tex',$moreenv);
 3730: 		    if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 3731: 			my $url = &Apache::lonnet::clutter($res_url);
 3732: 			my $annotation = &annotate($url);
 3733: 			$annotation    =~ s/(\\end\{document})/$annotation$1/;
 3734: 		    }
 3735: 		    if ($remove_latex_header eq 'YES') {
 3736: 			$rendered = &latex_header_footer_remove($rendered);
 3737: 		    } else {
 3738: 			$rendered =~ s/\\end\{document}//;
 3739: 		    }
 3740: 		    $current_output .= $rendered.'\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\strut \vskip 0 mm \strut ';
 3741: 		} elsif($res_url = ~/\.pdf$/) {
 3742: 		    my $url = &Apache::lonnet::clutter($res_url);
 3743: 		    my $rendered  = &include_pdf($url);
 3744: 		    if ($remove_latex_header ne 'NO') {
 3745: 			$rendered = &latex_header_footer_remove($rendered);
 3746: 		    }
 3747: 		    $current_output .= $rendered;
 3748: 		} else {
 3749: 		    my $rendered = &unsupported($res_url,$helper->{'VARS'}->{'LATEX_TYPE'},$curresline);
 3750: 		    if ($remove_latex_header ne 'NO') {
 3751: 			$rendered = &latex_header_footer_remove($rendered);
 3752: 		    } else {
 3753: 			$rendered =~ s/\\end\{document}//;
 3754: 		    }
 3755: 		    $current_output .= $rendered;
 3756: 		}
 3757: 	    }
 3758: 	    $remove_latex_header = 'YES';
 3759: 	}
 3760: 	$assignment = &Apache::lonxml::latex_special_symbols(
 3761: 	    &Apache::lonnet::gettitle($map), 'header');
 3762: 	if (($assignment ne $current_assignment) && ($assignment ne "")) {
 3763: 	    my $header_line = &format_page_header($LaTeXwidth, $parmhash{'print_header_format'},
 3764: 						  $assignment, $courseidinfo, 
 3765: 						  $fullname, $usersection);
 3766: 	    my $header_start = ($columns_in_format == 1) ? '\lhead'
 3767: 		: '\fancyhead[LO]';
 3768: 	    $header_line = $header_start.'{'.$header_line.'}';
 3769: 	    $current_output = $current_output . $header_line;
 3770: 	    $current_assignment = $assignment;
 3771: 	}
 3772: 
 3773: 	if (&Apache::loncommon::connection_aborted($r)) { last; }
 3774:     }
 3775:     # If we are printing incomplete it's possible we don't have
 3776:     # anything to print.  The print subsystem is not so good at handling
 3777:     # that so we're going to generate a stub that says there are no
 3778:     # incomplete resources for the person.
 3779:     #
 3780: 
 3781:     if ($actually_printed == 0) {
 3782:         my $message = &mt('No resources to print');
 3783:         if (!$possprint) {
 3784:             if ($perm{'pav'} || $perm{'pfo'}) {
 3785:                 $message = &mt('There are no unhidden resources to print.')."\n\n".
 3786:                            &mt('The most likely reason is one of the following: ')."\n".
 3787:                            '\begin{itemize}'."\n".
 3788:                            '\item '.&mt("The 'Resource hidden from students' parameter is set for the folder being printed.")."\n".
 3789:                            '\item '.&mt("'Hidden' is checked in the Course Editor individually for each resource in the folder being printed.")."\n".
 3790:                            '\end{itemize}'."\n\n".
 3791:                            &mt("Note: to print a bubblesheet exam which you want to hide from students, ".
 3792:                                "use the Course Editor to check the 'Hidden' checkbox for the exam folder itself.")."\n";
 3793:             }
 3794:         } elsif ($print_incomplete) {
 3795:             $message = &mt('No incomplete resources');
 3796:         }
 3797:         if ($message) { 
 3798: 	    $current_output  = &encapsulate_minipage("\\vskip -10mm \n$message\n \\vskip 100 mm { }\n");
 3799:         }
 3800: 	if ($remove_latex_header eq "NO") {
 3801: 	    $current_output = &print_latex_header() . $current_output;
 3802: 	} else {
 3803: 	    $current_output = &latex_header_footer_remove($current_output);
 3804: 	}
 3805:     }
 3806: 
 3807:     if ($syllabus_first) {
 3808:         $current_output =~ s/\\\\ Last updated:/Last updated:/
 3809:     }
 3810:     my $currentassignment=&Apache::lonxml::latex_special_symbols($helper->{VARS}->{'assignment'},'header');
 3811:     my $header_line =
 3812:     &format_page_header($LaTeXwidth, $parmhash{'print_header_format'},
 3813:                         $currentassignment, $courseidinfo, $fullname, $usersection);
 3814:     my $header_start = ($columns_in_format == 1) ? '\lhead' : '\fancyhead[LO]';
 3815:     my $newheader = $header_start.'{'.$header_line.'}';
 3816:     if ($current_output=~/\\documentclass/) {
 3817: 	$current_output =~ s/\\begin\{document}/\\setlength{\\topmargin}{1cm} \\begin{document}\\noindent\\parbox{\\minipagewidth}{\\noindent$newheader$namepostfix}\\vskip 5 mm /;
 3818: 
 3819:     } else {
 3820: 	my $blankpages = 
 3821: 	    '\clearpage\strut\clearpage'x$helper->{'VARS'}->{'EMPTY_PAGES'};
 3822: 	
 3823: 	$current_output = '\strut\vspace*{-6 mm}\\newline'.
 3824: 	    &copyright_line().' \newpage '.$blankpages.$end_of_student.
 3825: 	    '\setcounter{page}{1}\noindent\parbox{\minipagewidth}{\noindent'.
 3826: 	    $newheader.$namepostfix. '} \vskip 5 mm '.$current_output;
 3827: 
 3828:     }
 3829:     #
 3830:     #  Close the student bracketing.
 3831:     #
 3832:     return ($current_output,$fullname, $printed);
 3833: 
 3834: }
 3835: 
 3836: sub printing_blocked {
 3837:     my ($r,$blocktext) = @_;
 3838:     my $title = &mt('Preparing Printout');
 3839:     &Apache::lonhtmlcommon::clear_breadcrumbs();
 3840:     &Apache::lonhtmlcommon::add_breadcrumb({href=>'/adm/printout',
 3841:                                             text=> $title});
 3842:     my $breadcrumbs = &Apache::lonhtmlcommon::breadcrumbs($title);
 3843:     &Apache::loncommon::content_type($r,'text/html');
 3844:     &Apache::loncommon::no_cache($r);
 3845:     $r->send_http_header;
 3846:     $r->print(&Apache::loncommon::start_page('Preparing Printout').
 3847:               $breadcrumbs.
 3848:               $blocktext.
 3849:               &Apache::loncommon::end_page());
 3850:     return;
 3851: }
 3852: 
 3853: sub handler {
 3854: 
 3855:     my $r = shift;
 3856: 
 3857:     if ($env{'request.course.id'}) {
 3858:         my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 3859:         my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 3860:         my ($blocked,$blocktext) = 
 3861:             &Apache::loncommon::blocking_status('printout',$cnum,$cdom);
 3862:         if ($blocked) {
 3863:             my $checkrole = "cm./$cdom/$cnum";
 3864:             if ($env{'request.course.sec'} ne '') {
 3865:                 $checkrole .= "/$env{'request.course.sec'}";
 3866:             }
 3867:             unless ((&Apache::lonnet::allowed('evb',undef,undef,$checkrole)) && 
 3868:                     ($env{'request.role'} !~ m{^st\./$cdom/$cnum})) {
 3869:                 &printing_blocked($r,$blocktext);
 3870:                 return OK;
 3871:             }
 3872:         }
 3873:     }
 3874:     
 3875:     &init_perm();
 3876:     my $helper = printHelper($r);
 3877:     if (!ref($helper)) {
 3878: 	return $helper;
 3879:     }
 3880:    
 3881: 
 3882:     %parmhash=&Apache::lonnet::coursedescription($env{'request.course.id'});
 3883:  
 3884: 
 3885: 
 3886: 
 3887:     #  If a figure conversion queue file exists for this user.domain
 3888:     # we delete it since it can only be bad (if it were good, printout.pl
 3889:     # would have deleted it the last time around.
 3890: 
 3891:     my $conversion_queuefile = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
 3892:     if(-e $conversion_queuefile) {
 3893: 	unlink $conversion_queuefile;
 3894:     }
 3895:     
 3896: 
 3897:     &output_data($r,$helper,\%parmhash);
 3898:     return OK;
 3899: }
 3900: 
 3901: use Apache::lonhelper;
 3902: 
 3903: sub addMessage {
 3904:     my $text = shift;
 3905:     my $paramHash = Apache::lonhelper::getParamHash();
 3906:     $paramHash->{MESSAGE_TEXT} = $text;
 3907:     Apache::lonhelper::message->new();
 3908: }
 3909: 
 3910: 
 3911: 
 3912: sub init_perm {
 3913:     undef(%perm);
 3914:     $perm{'pav'}=&Apache::lonnet::allowed('pav',$env{'request.course.id'});
 3915:     if (!$perm{'pav'}) {
 3916: 	$perm{'pav'}=&Apache::lonnet::allowed('pav',
 3917: 		  $env{'request.course.id'}.'/'.$env{'request.course.sec'});
 3918:     }
 3919:     $perm{'pfo'}=&Apache::lonnet::allowed('pfo',$env{'request.course.id'});
 3920:     if (!$perm{'pfo'}) {
 3921: 	$perm{'pfo'}=&Apache::lonnet::allowed('pfo',
 3922: 		  $env{'request.course.id'}.'/'.$env{'request.course.sec'});
 3923:     }
 3924:     $perm{'vgr'}=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
 3925:     if (!$perm{'vgr'}) {
 3926:         $perm{'vgr'}=&Apache::lonnet::allowed('vgr',
 3927:                    $env{'request.course.id'}.'/'.$env{'request.course.sec'});
 3928:     }
 3929: }
 3930: 
 3931: sub get_randomly_ordered_warning {
 3932:     my ($helper,$map) = @_;
 3933: 
 3934:     my $message;
 3935: 
 3936:     my $postdata = $env{'form.postdata'} || $helper->{VARS}{'postdata'};
 3937:     my $navmap = Apache::lonnavmaps::navmap->new();
 3938:     if (defined($navmap)) {
 3939:         my $res = $navmap->getResourceByUrl($map);
 3940:         if ($res) {
 3941: 	    my $func = 
 3942: 	        sub { return ($_[0]->is_map() && $_[0]->randomorder); };
 3943: 	    my @matches = $navmap->retrieveResources($res, $func,1,1,1);
 3944: 
 3945:         }
 3946:     } else {
 3947:         $message = "Retrieval of information about ordering of resources failed."; 
 3948:         return '<message type="warning">'.$message.'</message>';
 3949:     }
 3950:     return;
 3951: }
 3952: 
 3953: sub printHelper {
 3954:     my $r = shift;
 3955: 
 3956:     if ($r->header_only) {
 3957:         if ($env{'browser.mathml'}) {
 3958:             &Apache::loncommon::content_type($r,'text/xml');
 3959:         } else {
 3960:             &Apache::loncommon::content_type($r,'text/html');
 3961:         }
 3962:         $r->send_http_header;
 3963:         return OK;
 3964:     }
 3965: 
 3966:     # Send header, nocache
 3967:     if ($env{'browser.mathml'}) {
 3968:         &Apache::loncommon::content_type($r,'text/xml');
 3969:     } else {
 3970:         &Apache::loncommon::content_type($r,'text/html');
 3971:     }
 3972:     &Apache::loncommon::no_cache($r);
 3973:     $r->send_http_header;
 3974:     $r->rflush();
 3975: 
 3976:     # Unfortunately, this helper is so complicated we have to
 3977:     # write it by hand
 3978: 
 3979:     Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING});
 3980:     
 3981:     my $helper = Apache::lonhelper::helper->new("Printing Helper");
 3982:     $helper->declareVar('symb');
 3983:     $helper->declareVar('postdata');    
 3984:     $helper->declareVar('curseed'); 
 3985:     $helper->declareVar('probstatus');   
 3986:     $helper->declareVar('filename');
 3987:     $helper->declareVar('construction');
 3988:     $helper->declareVar('assignment');
 3989:     $helper->declareVar('style_file');
 3990:     $helper->declareVar('student_sort');
 3991:     $helper->declareVar('FINISHPAGE');
 3992:     $helper->declareVar('PRINT_TYPE');
 3993:     $helper->declareVar("showallfoils");
 3994:     $helper->declareVar("STUDENTS");
 3995:     $helper->declareVar("EXTRASPACE");
 3996: 
 3997:    
 3998: 
 3999: 
 4000:     #  The page breaks and extra spaces
 4001:     #  can get loaded initially from the course environment:
 4002:     # But we only do this in the initial state so that they are allowed to change.
 4003:     #
 4004: 
 4005:     
 4006:     &Apache::loncommon::restore_course_settings('print',
 4007: 						{'pagebreaks'  => 'scalar',
 4008: 						 'extraspace'  => 'scalar',
 4009: 						 'extraspace_units' => 'scalar',
 4010: 					         'lastprinttype' => 'scalar'});
 4011:     
 4012:     # This will persistently load in the data we want from the
 4013:     # very first screen.
 4014:     
 4015:     if($helper->{VARS}->{PRINT_TYPE} eq $env{'form.lastprinttype'}) {
 4016: 	if (!defined ($env{"form.CURRENT_STATE"})) {
 4017: 	    
 4018: 	    $helper->{VARS}->{FINISHPAGE} = $env{'form.pagebreaks'};
 4019: 	    $helper->{VARS}->{EXTRASPACE} = $env{'form.extraspace'};
 4020: 	    $helper->{VARS}->{EXTRASPACE_UNITS} = $env{'form.extraspace_units'};
 4021: 	} else {
 4022: 	    my $state = $env{"form.CURRENT_STATE"};
 4023: 	    if ($state eq "START") {
 4024: 		$helper->{VARS}->{FINISHPAGE} = $env{'form.pagebreaks'};
 4025: 		$helper->{VARS}->{EXTRASPACE} = $env{'form.extraspace'};
 4026: 		$helper->{VARS}->{EXTRASPACE_UNITS} = $env{'form.extraspace_units'};
 4027: 		
 4028: 	    }
 4029: 	}
 4030: 	
 4031:     }
 4032: 
 4033:     # Detect whether we're coming from construction space
 4034:     if ($env{'form.postdata'}=~m{^/priv}) {
 4035:         $helper->{VARS}->{'filename'} = $env{'form.postdata'};
 4036:         $helper->{VARS}->{'construction'} = 1;
 4037:     } else {
 4038:         if ($env{'form.postdata'}) {
 4039:             $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($env{'form.postdata'});
 4040: 	    if ( $helper->{VARS}->{'symb'} eq '') {
 4041: 		$helper->{VARS}->{'postdata'} = $env{'form.postdata'};
 4042: 	    }
 4043:         }
 4044:         if ($env{'form.symb'}) {
 4045:             $helper->{VARS}->{'symb'} = $env{'form.symb'};
 4046:         }
 4047:         if ($env{'form.url'}) {
 4048:             $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($helper->{VARS}->{'postdata'});
 4049:         }
 4050: 
 4051:     }
 4052: 
 4053:     if ($env{'form.symb'}) {
 4054:         $helper->{VARS}->{'symb'} = $env{'form.symb'};
 4055:     }
 4056:     if ($env{'form.url'}) {
 4057:         $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($helper->{VARS}->{'postdata'});
 4058: 
 4059:     }
 4060:     $helper->{VARS}->{'symb'}=
 4061: 	&Apache::lonenc::check_encrypt($helper->{VARS}->{'symb'});
 4062:     my ($resourceTitle,$sequenceTitle,$mapTitle) = &details_for_menu($helper);
 4063:     if ($sequenceTitle ne '') {$helper->{VARS}->{'assignment'}=$sequenceTitle;}
 4064: 
 4065:     
 4066:     # Extract map
 4067:     my $symb = $helper->{VARS}->{'symb'};
 4068:     my ($map, $id, $url);
 4069:     my $subdir;
 4070:     my $is_published=0;		# True when printing from resource space.
 4071:     my $res_printable = 1;	# By default the current resource is printable.    
 4072:     my $userCanPrint = ($perm{'pav'} || $perm{'pfo'});
 4073:     my $res_printstartdate;
 4074:     my $res_printenddate;
 4075:     my $map_open = 0;
 4076:     my $map_close = 0xffffffff;
 4077:     my $course_open = 0;
 4078:     my $course_close = 0xffffffff;
 4079: 
 4080:     # Get the resource name from construction space
 4081:     if ($helper->{VARS}->{'construction'}) {
 4082:         $resourceTitle = substr($helper->{VARS}->{'filename'}, 
 4083:                                 rindex($helper->{VARS}->{'filename'}, '/')+1);
 4084:         $subdir = substr($helper->{VARS}->{'filename'},
 4085:                          0, rindex($helper->{VARS}->{'filename'}, '/') + 1);
 4086:     } else {
 4087: 	# From course space:
 4088: 
 4089: 	if ($symb ne '') {
 4090: 	    ($map, $id, $url) = &Apache::lonnet::decode_symb($symb);
 4091: 	    $helper->{VARS}->{'postdata'} = 
 4092: 		&Apache::lonenc::check_encrypt(&Apache::lonnet::clutter($url));
 4093: 	    my $navmap = Apache::lonnavmaps::navmap->new();
 4094: 	    my $res   = $navmap->getBySymb($symb);
 4095: 	    $res_printable  = $res->resprintable() || $userCanPrint; #printability in course context
 4096: 	    ($res_printstartdate, $res_printenddate) = 	&get_print_dates($res);
 4097: 	    ($course_open, $course_close) = &course_print_dates($res);
 4098: 	    ($map_open, $map_close)       = &map_print_dates($res);
 4099: 
 4100: 	} else {
 4101: 	    # Resource space.
 4102: 
 4103: 	    $url = $helper->{VARS}->{'postdata'};
 4104: 	    $is_published=1;	# From resource space.
 4105: 	}
 4106: 	$url = &Apache::lonnet::clutter($url);
 4107:         if (!$resourceTitle) { # if the resource doesn't have a title, use the filename
 4108:             my $postdata = $helper->{VARS}->{'postdata'};
 4109:             $resourceTitle = substr($postdata, rindex($postdata, '/') + 1);
 4110:         }
 4111:         $subdir = &Apache::lonnet::filelocation("", $url);
 4112: 
 4113: 
 4114:     }
 4115:     if (!$helper->{VARS}->{'curseed'} && $env{'form.curseed'}) {
 4116: 	$helper->{VARS}->{'curseed'}=$env{'form.curseed'};
 4117:     }
 4118: 
 4119:     if (!$helper->{VARS}->{'probstatus'} && $env{'form.problemtype'}) {
 4120: 	$helper->{VARS}->{'probstatus'}=$env{'form.problemstatus'};
 4121:     }
 4122: 
 4123:     my $userCanSeeHidden = Apache::lonnavmaps::advancedUser();
 4124: 
 4125:     Apache::lonhelper::registerHelperTags();
 4126: 
 4127:     # "Delete everything after the last slash."
 4128:     $subdir =~ s|/[^/]+$||;
 4129: 
 4130:     # What can be printed is a very dynamic decision based on
 4131:     # lots of factors. So we need to dynamically build this list.
 4132:     # To prevent security leaks, states are only added to the wizard
 4133:     # if they can be reached, which ensures manipulating the form input
 4134:     # won't allow anyone to reach states they shouldn't have permission
 4135:     # to reach.
 4136: 
 4137:     # printChoices is tracking the kind of printing the user can
 4138:     # do, and will be used in a choices construction later.
 4139:     # In the meantime we will be adding states and elements to
 4140:     # the helper by hand.
 4141:     my $printChoices = [];
 4142:     my $paramHash;
 4143: 
 4144:     # If there is a current resource and it is printable
 4145:     # Give that as a choice.
 4146: 
 4147:     if ($resourceTitle && $res_printable) {
 4148:         push @{$printChoices}, ["<b><i>$resourceTitle</i></b> (".&mt('the resource you just saw on the screen').")", 'current_document', 'PAGESIZE'];
 4149:     } 
 4150: 
 4151:     # Useful filter strings
 4152: 
 4153:     my $isPrintable = ' && $res->resprintable()';
 4154: 
 4155:     my $isProblem = '(($res->is_problem()||$res->contains_problem() ||$res->is_practice()))';
 4156:     $isProblem .= $isPrintable unless $userCanPrint;
 4157:     $isProblem .= ' && !$res->randomout()' if !$userCanSeeHidden;
 4158:     my $isProblemOrMap = '($res->is_problem() || $res->contains_problem() || $res->is_sequence() || $res->is_practice())';
 4159:     $isProblemOrMap .= $isPrintable unless $userCanPrint;
 4160:     my $isNotMap = '(!$res->is_sequence())';
 4161:     $isNotMap .= $isPrintable unless $userCanPrint;
 4162:     $isNotMap .= ' && !$res->randomout()' if !$userCanSeeHidden;
 4163:     my $isMap = '$res->is_map()';
 4164:     $isMap .= $isPrintable unless $userCanPrint;
 4165:     my $symbFilter = '$res->shown_symb() ';
 4166:     my $urlValue = '$res->link()';
 4167: 
 4168:     $helper->declareVar('SEQUENCE');
 4169: 
 4170:     # If we're in a sequence...
 4171: 
 4172:     my $start_new_option;
 4173:     if ($perm{'pav'}) {
 4174: 	$start_new_option = 
 4175: 	    "<option text='".&mt('Start new page[_1]before selected','<br />').
 4176: 	    "' variable='FINISHPAGE' />".
 4177: 	    "<option text='".&mt('Extra space[_1]before selected','<br />').
 4178: 	    "' variable='EXTRASPACE' type='text' />" .
 4179: 	    "<option " .
 4180: 	    "' variable='POSSIBLE_RESOURCES' type='hidden' />".
 4181: 	    "<option text='".&mt('Space units[_1]check for mm','<br />').
 4182: 	    "' variable='EXTRASPACE_UNITS' type='checkbox' />"
 4183: 	    ;
 4184: 	    
 4185: 
 4186:     }
 4187: 
 4188:     # If not construction space user can print the components of a page:
 4189: 
 4190:     my $page_ispage;
 4191:     my $page_title;
 4192:     if (!$helper->{VARS}->{'construction'}) {
 4193: 	my $varspostdata = $helper->{VARS}->{'postdata'};
 4194: 	my $varsassignment = $helper->{VARS}->{'assignment'};
 4195: 	my $page_navmap         = Apache::lonnavmaps::navmap->new();
 4196: 	if (defined($page_navmap)) {
 4197: 	    my @page_resources      = $page_navmap->retrieveResources($url);
 4198: 	    if(defined($page_resources[0])) {
 4199: 		$page_ispage       = $page_resources[0]->is_page();
 4200: 		$page_title     = $page_resources[0]->title();
 4201: 		my $resourcesymb   = $page_resources[0]->symb();
 4202: 		my ($pagemap, $pageid, $pageurl) = &Apache::lonnet::decode_symb($symb);
 4203: 		if ($page_ispage) {
 4204: 		    push @{$printChoices}, 
 4205: 		    [&mt('Selected [_1]Problems[_2] from page [_3]', '<b>', '</b>', '<b><i>'.$page_title.'</i></b>'), 
 4206: 		     'map_problems_in_page', 
 4207: 		     'CHOOSE_PROBLEMS_PAGE'];
 4208: 		    push @{$printChoices}, 
 4209: 		    [&mt('Selected [_1]Resources[_2] from page [_3]', '<b>', '</b>', '<b><i>'.$page_title.'</i></b>'), 
 4210: 		     'map_resources_in_page', 
 4211: 		     'CHOOSE_RESOURCES_PAGE'];
 4212: 		}
 4213:         my $helperFragment = &generate_resource_chooser('CHOOSE_PROBLEMS_PAGE',
 4214: 							'Select Problem(s) to print',
 4215: 							"multichoice='1' toponly='1' addstatus='1' closeallpages='1'",
 4216: 							'RESOURCES',
 4217: 							'PAGESIZE',
 4218: 							$url,
 4219: 							$isProblem, '',  $symbFilter,
 4220: 							$start_new_option);
 4221: 
 4222: 
 4223:       $helperFragment .= &generate_resource_chooser('CHOOSE_RESOURCES_PAGE',
 4224: 						    'Select Resource(s) to print',
 4225: 						    'multichoice="1" toponly="1" addstatus="1" closeallpages="1"',
 4226: 						    'RESOURCES',
 4227: 						    'PAGESIZE',
 4228: 						    $url,
 4229: 						    $isNotMap, '', $symbFilter,
 4230: 						    $start_new_option);
 4231: 
 4232: 						    
 4233: 
 4234: 
 4235: 
 4236: 	&Apache::lonxml::xmlparse($r, 'helper', $helperFragment);
 4237: 	
 4238: 	    }
 4239: 	}
 4240:     }
 4241: 
 4242:     if (($helper->{'VAR'}->{'construction'} ne '1' ) &&
 4243: 	$helper->{VARS}->{'postdata'} &&
 4244: 	$helper->{VARS}->{'assignment'}) {
 4245: 
 4246: 	# BZ 5209 - Print incomplete problems from sequence:
 4247: 	# the exact form of this depends on whether or not we are privileged or a mere
 4248: 	# plebe of s student:
 4249: 
 4250: 	my $printSelector = 'map_incomplete_problems_seq';
 4251: 	my $nextState     = 'CHOOSE_INCOMPLETE_SEQ';
 4252: 	my $textSuffix    = '';
 4253: 
 4254: 	if ($userCanPrint)  {
 4255: 	    $printSelector = 'map_incomplete_problems_people_seq';
 4256: 	    $nextState     = 'CHOOSE_INCOMPLETE_PEOPLE_SEQ';
 4257: 	    $textSuffix    = ' for selected students';
 4258: 	    my $helperStates =
 4259: 		&create_incomplete_folder_selstud_helper($helper, $map); 
 4260: 	    &Apache::lonxml::xmlparse($r, 'helper', $helperStates);
 4261: 	} else {
 4262: 	    if (&printable($map_open, $map_close)) {
 4263: 		my $helperStates = &create_incomplete_folder_helper($helper, $map); # Create needed states for student.
 4264: 		&Apache::lonxml::xmlparse($r, 'helper', $helperStates);
 4265: 	    } else {
 4266: 		# TODO: Figure out how to break the news...this folder is not printable.
 4267: 	    }
 4268: 	}
 4269: 
 4270: 	if ($userCanPrint || &printable($map_open, $map_close)) {
 4271: 	    push(@{$printChoices},
 4272: 		 [&mt('Selected  [_1]Incomplete Problems[_2] from folder [_3]' . $textSuffix,
 4273: 		      '<b>', '</b>',
 4274: 		      '<b><i>'. $sequenceTitle . '</b></i>'),
 4275: 		  $printSelector,
 4276: 		  $nextState]);
 4277: 	}
 4278:         # Allow problems from sequence
 4279: 	if ($userCanPrint || &printable($map_open, $map_close)) {
 4280: 	    push @{$printChoices}, 
 4281: 	    [&mt('Selected [_1]Problems[_2] from folder [_3]','<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>'), 
 4282: 	     'map_problems', 
 4283: 	     'CHOOSE_PROBLEMS'];
 4284: 	    # Allow all resources from sequence
 4285: 	    push @{$printChoices}, [&mt('Selected [_1]Resources[_2] from folder [_3]','<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>'), 
 4286: 				    'map_problems_pages', 
 4287: 				    'CHOOSE_PROBLEMS_HTML'];
 4288: 	    my $helperFragment = &generate_resource_chooser('CHOOSE_PROBLEMS',
 4289: 							    'Select Problem(s) to print',
 4290: 							    'multichoice="1" toponly="1" addstatus="1" closeallpages="1"',
 4291: 							    'RESOURCES',
 4292: 							    'PAGESIZE',
 4293: 							    $map,
 4294: 							    $isProblem, '',
 4295: 							    $symbFilter,
 4296: 							    $start_new_option);
 4297: 	    $helperFragment .= &generate_resource_chooser('CHOOSE_PROBLEMS_HTML',
 4298: 							  'Select Resource(s) to print',
 4299: 							  'multichoice="1" toponly="1" addstatus="1" closeallpages="1"',
 4300: 							  'RESOURCES',
 4301: 							  'PAGESIZE',
 4302: 							  $map,
 4303: 							  $isNotMap, '',
 4304: 							  $symbFilter,
 4305: 							  $start_new_option);
 4306: 	    
 4307: 	    &Apache::lonxml::xmlparse($r, 'helper', $helperFragment);
 4308: 	} else {
 4309: 	    # TODO: Figure out how to tell them the folder is not printable.
 4310: 	}
 4311:     }
 4312: 	# If the user has pfo (print for others) allow them to print all 
 4313: 	# problems and resources  in the entire course, optionally for selected students
 4314: 	my $post_data = $helper->{VARS}->{'postdata'};
 4315:     
 4316:     if ($perm{'pfo'} &&  !$is_published  &&
 4317:         ($post_data=~/\/res\// || $post_data =~/\/(syllabus|smppg|aboutme|bulletinboard)$/)) { 
 4318: 
 4319: 	# BZ 5209 - incomplete problems from entire course:
 4320: 
 4321: 	push(@{$printChoices},
 4322: 	     [&mtn('Selected <b>Incomplete Problems</b> from <b>entire course</b> for selected people'),
 4323: 	      'incomplete_problems_selpeople_course', 'INCOMPLETE_PROBLEMS_COURSE_RESOURCES']);
 4324: 	my $helperFragment = &create_incomplete_course_helper($helper); # Create needed states.
 4325: 
 4326: 	&Apache::lonxml::xmlparse($r, 'helper', $helperFragment);
 4327: 
 4328: 	#  Selected problems/resources from entire course:
 4329: 
 4330:         push @{$printChoices}, [&mtn('Selected <b>Problems</b> from <b>entire course</b>'), 'all_problems', 'ALL_PROBLEMS'];
 4331: 	push @{$printChoices}, [&mtn('Selected <b>Resources</b> from <b>entire course</b>'), 'all_resources', 'ALL_RESOURCES'];
 4332: 	push @{$printChoices}, [&mtn('Selected <b>Problems</b> from <b>entire course</b> for <b>selected people</b>'), 'all_problems_students', 'ALL_PROBLEMS_STUDENTS'];
 4333: my $suffixXml = <<ALL_PROBLEMS;
 4334:   <state name="STUDENTS1" title="Select People">
 4335:       <message><b>Select sorting order of printout</b> </message>
 4336:     <choices variable='student_sort'>
 4337:       <choice computer='0'>Sort by section then student</choice>
 4338:       <choice computer='1'>Sort by students across sections.</choice>
 4339:     </choices>
 4340:       <message><br /><hr /><br /> </message>
 4341:       <student multichoice='1' variable="STUDENTS" nextstate="PRINT_FORMATTING" coursepersonnel="1"/>
 4342:   </state>
 4343: ALL_PROBLEMS
 4344:          &Apache::lonxml::xmlparse($r, 'helper', 
 4345: 				   &generate_resource_chooser('ALL_PROBLEMS',
 4346: 							      'Select Problem(s) to print',
 4347: 							      'multichoice="1" suppressEmptySequences="0" addstatus="1" closeallpages="1"',
 4348: 							      'RESOURCES',
 4349: 							      'PAGESIZE',
 4350: 							      '',
 4351: 							      $isProblemOrMap, $isNotMap,
 4352: 							      $symbFilter,
 4353: 							      $start_new_option) .
 4354: 				   &generate_resource_chooser('ALL_RESOURCES',
 4355: 							      'Select Resource(s) to print',
 4356: 							      " toponly='0' multichoice='1' suppressEmptySequences='0' addstatus='1' closeallpages='1'",
 4357: 							      'RESOURCES',
 4358: 							      'PAGESIZE',
 4359: 							      '',
 4360: 							      $isNotMap,'',$symbFilter,
 4361: 							      $start_new_option) .
 4362: 				   &generate_resource_chooser('ALL_PROBLEMS_STUDENTS',
 4363: 							      'Select Problem(s) to print',
 4364: 							      'toponly="0" multichoice="1" suppressEmptySequences="0" addstatus="1" closeallpages="1"',
 4365: 							      'RESOURCES',
 4366: 							      'STUDENTS1',
 4367: 							      '',
 4368: 							      $isProblemOrMap,'' , $symbFilter,
 4369: 							      $start_new_option) .
 4370: 				     $suffixXml
 4371: 				   );
 4372: 
 4373: 	if ($helper->{VARS}->{'assignment'}) {
 4374: 
 4375: 	    # If we were looking at a page, allow a selection of problems from the page
 4376: 	    # either for selected students or for coded assignments.
 4377: 
 4378: 	    if ($page_ispage) {
 4379: 		push @{$printChoices}, [&mt('Selected [_1]Problems[_2] from page [_3] for [_4]selected people[_5]',
 4380: 					    '<b>', '</b>', '<b><i>'.$page_title.'</i></b>', '<b>', '</b>'),
 4381: 					'problems_for_students_from_page', 'CHOOSE_TGT_STUDENTS_PAGE'];
 4382: 		push @{$printChoices}, [&mt('Selected [_1]Problems[_2] from page [_3] for [_4]CODEd assignments[_5]',
 4383: 					    '<b>', '</b>', '<b><i>'.$page_title.'</i></b>', '<b>', '</b>'),
 4384: 					'problems_for_anon_page', 'CHOOSE_ANON1_PAGE'];
 4385: 	    }
 4386: 	    push @{$printChoices}, [&mt('Selected [_1]Problems[_2] from folder [_3] for [_4]selected people[_5]',
 4387: 					'<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>','<b>','</b>'), 
 4388: 				    'problems_for_students', 'CHOOSE_STUDENTS'];
 4389: 	    push @{$printChoices}, [&mt('Selected [_1]Problems[_2] from folder [_3] for [_4]CODEd assignments[_5]',
 4390: 					'<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>','<b>','</b>'), 
 4391: 				    'problems_for_anon', 'CHOOSE_ANON1'];
 4392: 	}
 4393: 
 4394: 	my $randomly_ordered_warning = 
 4395:             &get_randomly_ordered_warning($helper, $map);
 4396: 
 4397: 	# resource_selector will hold a few states that:
 4398: 	#   - Allow resources to be selected for printing.
 4399: 	#   - Determine pagination between assignments.
 4400: 	#   - Determine how many assignments should be bundled into a single PDF.
 4401:         # TODO:
 4402: 	#    Probably good to do things like separate this up into several vars, each
 4403: 	#    with one state, and use REGEXPs at inclusion time to set state names
 4404: 	#    and next states for better mix and match capability
 4405: 	#
 4406: 	my $resource_selector= &generate_resource_chooser('SELECT_PROBLEMS',
 4407: 							  'Select resources to print',
 4408: 							  'multichoice="1" addstatus="1" closeallpages="1"',
 4409: 							  'RESOURCES', 
 4410: 							  'PRINT_FORMATTING',
 4411: 							  $map,
 4412: 							  $isProblem, '', $symbFilter,
 4413: 							  $start_new_option);
 4414: 	$resource_selector .=  &generate_format_selector($helper,
 4415:                                                          'How should results be printed?',
 4416:                                                          'PRINT_FORMATTING').
 4417:                                &generate_resource_chooser('CHOOSE_STUDENTS_PAGE',
 4418: 							'Select Problem(s) to print',
 4419: 							"multichoice='1' addstatus='1' closeallpages ='1'",
 4420: 							'RESOURCES',
 4421: 							'PRINT_FORMATTING',
 4422: 							$url,
 4423: 							$isProblem, '',  $symbFilter,
 4424: 							$start_new_option);
 4425: 
 4426: 
 4427: # Generate student choosers.
 4428: 
 4429: 
 4430: 
 4431:         &Apache::lonxml::xmlparse($r, 'helper',
 4432: 				  &generate_student_chooser('CHOOSE_TGT_STUDENTS_PAGE',
 4433: 							    'student_sort',
 4434: 							    'STUDENTS',
 4435: 							    'CHOOSE_STUDENTS_PAGE'));
 4436: 	&Apache::lonxml::xmlparse($r, 'helper', 
 4437: 				  &generate_student_chooser('CHOOSE_STUDENTS',
 4438: 							    'student_sort',
 4439: 							    'STUDENTS',
 4440: 							    'SELECT_PROBLEMS'));
 4441: 	&Apache::lonxml::xmlparse($r, 'helper', $resource_selector);
 4442: 
 4443: 	my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 4444: 	my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 4445:         my @names=&Apache::lonnet::getkeys('CODEs',$cdom,$cnum);
 4446: 	my $namechoice='<choice></choice>';
 4447: 	foreach my $name (sort {uc($a) cmp uc($b)} @names) {
 4448: 	    if ($name =~ /^error: 2 /) { next; }
 4449: 	    if ($name =~ /^type\0/) { next; }
 4450: 	    $namechoice.='<choice computer="'.$name.'">'.$name.'</choice>';
 4451: 	}
 4452: 
 4453: 
 4454: 	my %code_values;
 4455: 	my %codes_to_print;
 4456: 	foreach my $key (@names) {
 4457: 	    %code_values = &Apache::grades::get_codes($key, $cdom, $cnum);
 4458: 	    foreach my $key (keys(%code_values)) {
 4459: 		$codes_to_print{$key} = 1;
 4460: 	    }
 4461: 	}
 4462: 
 4463: 	my $code_selection;
 4464: 	foreach my $code (sort {uc($a) cmp uc($b)} (keys(%codes_to_print))) {
 4465: 	    my $choice  = $code;
 4466: 	    if ($code =~ /^[A-Z]+$/) { # Alpha code
 4467: 		$choice = &letters_to_num($code);
 4468: 	    }
 4469: 	    push(@{$helper->{DATA}{ALL_CODE_CHOICES}},[$code,$choice]);
 4470: 	}
 4471: 	if (%codes_to_print) {
 4472: 	    $code_selection .='   
 4473: 	    <message><b>Choose single CODE from list:</b></message>
 4474: 		<message></td><td></message>
 4475: 		<dropdown variable="CODE_SELECTED_FROM_LIST" multichoice="0" allowempty="0">
 4476:                   <choice></choice>
 4477:                   <exec>
 4478:                      push(@{$state->{CHOICES}},@{$helper->{DATA}{ALL_CODE_CHOICES}});
 4479:                   </exec>
 4480: 		</dropdown>
 4481: 	    <message></td></tr><tr><td></message>
 4482:             '.$/;
 4483: 
 4484: 	}
 4485: 
 4486:         my @lines = &Apache::grades::get_scantronformat_file();
 4487: 	my $codechoice='';
 4488: 	foreach my $line (@lines) {
 4489:             next if (($line =~ /^\#/) || ($line eq ''));
 4490: 	    my ($name,$description,$code_type,$code_length)=
 4491: 		(split(/:/,$line))[0,1,2,4];
 4492: 	    if ($code_length > 0 && 
 4493: 		$code_type =~/^(letter|number|-1)/) {
 4494: 		$codechoice.='<choice computer="'.$name.'">'.$description.'</choice>';
 4495: 	    }
 4496: 	}
 4497: 	if ($codechoice eq '') {
 4498: 	    $codechoice='<choice computer="default">Default</choice>';
 4499: 	}
 4500: 	my $anon1 = &generate_code_selector($helper, 
 4501: 					    'CHOOSE_ANON1',
 4502: 					    'SELECT_PROBLEMS',
 4503: 					    $codechoice,
 4504: 					    $code_selection,
 4505: 					    $namechoice) . $resource_selector;
 4506: 					    
 4507: 					    
 4508:         &Apache::lonxml::xmlparse($r, 'helper',$anon1);
 4509: 
 4510: 	my $anon_page = &generate_code_selector($helper,
 4511: 						'CHOOSE_ANON1_PAGE',
 4512: 						'SELECT_PROBLEMS_PAGE',
 4513: 						$codechoice,
 4514: 						$code_selection,
 4515: 						$namechoice) .
 4516: 			&generate_resource_chooser('SELECT_PROBLEMS_PAGE',
 4517: 						   'Select Problem(s) to print',
 4518: 						   "multichoice='1' addstatus='1' closeallpages ='1'",
 4519: 						   'RESOURCES',
 4520: 						   'PRINT_FORMATTING',
 4521: 						   $url,
 4522: 						   $isProblem, '',  $symbFilter,
 4523: 						   $start_new_option);
 4524: 	&Apache::lonxml::xmlparse($r, 'helper', $anon_page);
 4525: 
 4526: 
 4527: 	if ($helper->{VARS}->{'assignment'}) {
 4528: 
 4529: 	    # Assignment printing:
 4530: 
 4531: 	    push @{$printChoices}, [&mt('Selected [_1]Resources[_2] from folder [_3] for [_4]selected people[_5]','<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>','<b>','</b>'), 'resources_for_students', 'CHOOSE_STUDENTS1'];
 4532: 	    push @{$printChoices}, [&mt('Selected [_1]Resources[_2] from folder [_3] for [_4]CODEd assignments[_5]','<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>','<b>','</b>'), 'resources_for_anon', 'CHOOSE_ANON2'];
 4533: 	}
 4534: 	    
 4535: 
 4536: 	$resource_selector=<<RESOURCE_SELECTOR;
 4537:     <state name="SELECT_RESOURCES" title="Select Resources">
 4538:     $randomly_ordered_warning
 4539:     <nextstate>PRINT_FORMATTING</nextstate>
 4540:     <message><br /><big><i><b>Select resources for the assignment</b></i></big><br /></message>
 4541:     <resource variable="RESOURCES" multichoice="1" addstatus="1" 
 4542:               closeallpages="1">
 4543:       <filterfunc>return $isNotMap;</filterfunc>
 4544:       <mapurl>$map</mapurl>
 4545:       <valuefunc>return $symbFilter;</valuefunc>
 4546:       $start_new_option
 4547:       </resource>
 4548:     </state>
 4549: RESOURCE_SELECTOR
 4550: 
 4551:         $resource_selector .= &generate_format_selector($helper,
 4552:                                                         'Format of the print job',
 4553:                                                         'PRINT_FORMATTING');
 4554: 	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_STUDENTS1);
 4555:   <state name="CHOOSE_STUDENTS1" title="Select Students and Resources">
 4556:     <choices variable='student_sort'>
 4557:       <choice computer='0'>Sort by section then student</choice>
 4558:       <choice computer='1'>Sort by students across sections.</choice>
 4559:     </choices>
 4560:     <message><br /><hr /><br /></message>
 4561:     <student multichoice='1' variable="STUDENTS" nextstate="SELECT_RESOURCES" coursepersonnel="1" />
 4562: 
 4563:     </state>
 4564:     $resource_selector
 4565: CHOOSE_STUDENTS1
 4566: 
 4567: 	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_ANON2);
 4568:   <state name="CHOOSE_ANON2" title="Select CODEd Assignments">
 4569:     <nextstate>SELECT_RESOURCES</nextstate>
 4570:     <message><h4>Fill out one of the forms below</h4></message>
 4571:     <message><br /><hr /> <br /></message>
 4572:     <message><h3>Generate new CODEd Assignments</h3></message>
 4573:     <message><table><tr><td><b>Number of CODEd assignments to print:</b></td><td></message>
 4574:     <string variable="NUMBER_TO_PRINT_TOTAL" maxlength="5" size="5"  noproceed="1">
 4575:        <validator>
 4576: 	if (((\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}+0) < 1) &&
 4577: 	    !\$helper->{'VARS'}{'REUSE_OLD_CODES'}                &&
 4578: 	    !\$helper->{'VARS'}{'SINGLE_CODE'}                   &&
 4579: 	    !\$helper->{'VARS'}{'CODE_SELECTED_FROM_LIST'}) {
 4580: 	    return "You need to specify the number of assignments to print";
 4581: 	}
 4582:         if (((\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}+0) >= 1)  &&
 4583:              (\$helper->{'VARS'}{'SINGLE_CODE'} ne '') ) {
 4584:             return 'Specifying number of codes to print and a specific code is not compatible';
 4585:         }
 4586: 	return undef;
 4587:        </validator>
 4588:     </string>
 4589:     <message></td></tr><tr><td></message>
 4590:     <message><b>Names to save the CODEs under for later:</b></message>
 4591:     <message></td><td></message>
 4592:     <string variable="ANON_CODE_STORAGE_NAME" maxlength="50" size="20" />
 4593:     <message></td></tr><tr><td></message>
 4594:     <message><b>Bubblesheet type:</b></message>
 4595:     <message></td><td></message>
 4596:     <dropdown variable="CODE_OPTION" multichoice="0" allowempty="0">
 4597:     $codechoice
 4598:     </dropdown>
 4599:     <message></td></tr><tr><td></table></message>
 4600:     <message><br /><hr /><h3>Print a Specific CODE </h3><br /><table></message>
 4601:     <message><tr><td><b>Enter a CODE to print:</b></td><td></message>
 4602:     <string variable="SINGLE_CODE" size="10">
 4603:         <validator>
 4604: 	   if(!\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}           &&
 4605: 	      !\$helper->{'VARS'}{'REUSE_OLD_CODES'}                 &&
 4606: 	      !\$helper->{'VARS'}{'CODE_SELECTED_FROM_LIST'}) {
 4607: 	      return &Apache::lonprintout::is_code_valid(\$helper->{'VARS'}{'SINGLE_CODE'},
 4608: 						      \$helper->{'VARS'}{'CODE_OPTION'});
 4609: 	  } elsif (\$helper->{'VARS'}{'SINGLE_CODE'} ne ''){
 4610: 	      return 'Specifying a code name is incompatible specifying number of codes.';
 4611: 	   } else {
 4612: 	       return undef;	# Other forces control us.
 4613: 	   }
 4614:         </validator>
 4615:     </string>
 4616:     <message></td></tr><tr><td></message>
 4617:         $code_selection
 4618:     <message></td></tr></table></message>
 4619:     <message><hr /><h3>Reprint a Set of Saved CODEs</h3><table><tr><td></message>
 4620:     <message><b>Select saved CODEs:</b></message>
 4621:     <message></td><td></message>
 4622:     <dropdown variable="REUSE_OLD_CODES">
 4623:         $namechoice
 4624:     </dropdown>
 4625:     <message></td></tr></table></message>
 4626:   </state>
 4627:     $resource_selector
 4628: CHOOSE_ANON2
 4629:     }
 4630: 
 4631:     # FIXME: That RE should come from a library somewhere.
 4632:     if (($perm{'pav'} 
 4633: 	&& $subdir ne $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/'
 4634: 	&& (defined($helper->{'VARS'}->{'construction'})
 4635: 	    ||
 4636: 	    (&Apache::lonnet::allowed('bre',$subdir) eq 'F'
 4637: 	     && 
 4638: 	     $helper->{VARS}->{'postdata'}=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)/)
 4639: 	    )) 
 4640: 	&& $helper->{VARS}->{'assignment'} eq ""
 4641: 	) {
 4642: 	my $pretty_dir = &Apache::lonnet::hreflocation($subdir);
 4643:         push @{$printChoices}, [&mt('Selected [_1]Problems[_2] from current subdirectory [_3]','<b>','</b>','<b><i>'.$pretty_dir.'</i></b>','<b>','</b>'), 'problems_from_directory', 'CHOOSE_FROM_SUBDIR'];
 4644:         my $xmlfrag = <<CHOOSE_FROM_SUBDIR;
 4645:   <state name="CHOOSE_FROM_SUBDIR" title="Select File(s) from <b><small>$pretty_dir</small></b> to print">
 4646: 
 4647:     <files variable="FILES" multichoice='1'>
 4648:       <nextstate>PAGESIZE</nextstate>
 4649:       <filechoice>return '$subdir';</filechoice>
 4650: CHOOSE_FROM_SUBDIR
 4651:         
 4652:         # this is broken up because I really want interpolation above,
 4653:         # and I really DON'T want it below
 4654:         $xmlfrag .= <<'CHOOSE_FROM_SUBDIR';
 4655:       <filefilter>return Apache::lonhelper::files::not_old_version($filename) &&
 4656: 	  $filename =~ m/\.(problem|exam|quiz|assess|survey|form|library)$/;
 4657:       </filefilter>
 4658:       </files>
 4659:     </state>
 4660: CHOOSE_FROM_SUBDIR
 4661:         &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 4662:     }
 4663: 
 4664:     # Allow the user to select any sequence in the course, feed it to
 4665:     # another resource selector for that sequence
 4666:     if (!$helper->{VARS}->{'construction'} && !$is_published) {
 4667: 	push @$printChoices, [&mtn("Selected <b>Resources</b> from <b>selected folder</b> in course"),
 4668: 			      'select_sequences', 'CHOOSE_SEQUENCE'];
 4669: 	my $escapedSequenceName = $helper->{VARS}->{'SEQUENCE'};
 4670: 	#Escape apostrophes and backslashes for Perl
 4671: 	$escapedSequenceName =~ s/\\/\\\\/g;
 4672: 	$escapedSequenceName =~ s/'/\\'/g;
 4673: 	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_FROM_ANY_SEQUENCE);
 4674:   <state name="CHOOSE_SEQUENCE" title="Select Sequence To Print From">
 4675:     <message>Select the sequence to print resources from:</message>
 4676:     <resource variable="SEQUENCE">
 4677:       <nextstate>CHOOSE_FROM_ANY_SEQUENCE</nextstate>
 4678:       <filterfunc>return &Apache::lonprintout::printable_sequence(\$res);</filterfunc>
 4679:       <valuefunc>return $urlValue;</valuefunc>
 4680:       <choicefunc>return \$res->hasResource(\$res,sub { return !\$_[0]->is_sequence() },0,0);
 4681: 	</choicefunc>
 4682:       </resource>
 4683:     </state>
 4684:   <state name="CHOOSE_FROM_ANY_SEQUENCE" title="Select Resources To Print">
 4685:     <message>(mark desired resources then click "next" button) <br /></message>
 4686:     <resource variable="RESOURCES" multichoice="1" toponly='1' addstatus="1"
 4687:               closeallpages="1">
 4688:       <nextstate>PAGESIZE</nextstate>
 4689:       <filterfunc>return $isNotMap</filterfunc>
 4690:       <mapurl evaluate='1'>return '$escapedSequenceName';</mapurl>
 4691:       <valuefunc>return $symbFilter;</valuefunc>
 4692:       $start_new_option
 4693:       </resource>
 4694:     </state>
 4695: CHOOSE_FROM_ANY_SEQUENCE
 4696: }
 4697: 
 4698:     # Generate the first state, to select which resources get printed.
 4699:     Apache::lonhelper::state->new("START", "Select Printing Options:");
 4700:     if (!$res_printable) {
 4701:         my $now = time;
 4702:         my $shownprintstart = &Apache::lonlocal::locallocaltime($res_printstartdate);
 4703:         my $shownprintend = &Apache::lonlocal::locallocaltime($res_printenddate);
 4704:         my $noprintmsg;
 4705:         if (($res_printenddate) && ($res_printenddate < $now)) {
 4706:                 $noprintmsg = &mt('Printing for current resource no longer available (ended: [_1])',
 4707:                                   $shownprintend);
 4708:         } else {
 4709:             if (($res_printstartdate) && ($res_printstartdate > $now)) {
 4710:                 if (($res_printenddate) && ($res_printenddate > $now) && ($res_printenddate > $res_printstartdate)) {
 4711:                     $noprintmsg = &mt('Printing for current resource is only possible between [_1] and [_2]',
 4712:                                   $shownprintstart,$shownprintend);
 4713:                 } elsif (!$res_printenddate) {
 4714:                     $noprintmsg = &mt('Printing for current resource will only be possible starting [_1]',
 4715:                                       $shownprintstart);
 4716:                 } else {
 4717:                     $noprintmsg = &mt('Printing for current resource is unavailable');
 4718:                 }
 4719:             }
 4720:         }
 4721: 
 4722:         if ($noprintmsg) {
 4723:             $paramHash = Apache::lonhelper::getParamHash();
 4724: 	    $paramHash->{MESSAGE_TEXT} = 
 4725:                 '<p class="LC_info">'.$noprintmsg.'</p>';
 4726: 	    Apache::lonhelper::message->new();
 4727:         }
 4728:     }
 4729:     $paramHash = Apache::lonhelper::getParamHash();
 4730:     $paramHash = Apache::lonhelper::getParamHash();
 4731:     $paramHash->{MESSAGE_TEXT} = "";
 4732:     Apache::lonhelper::message->new();
 4733:     $paramHash = Apache::lonhelper::getParamHash();
 4734:     $paramHash->{'variable'} = 'PRINT_TYPE';
 4735:     $paramHash->{CHOICES} = $printChoices;
 4736:     Apache::lonhelper::choices->new();
 4737: 
 4738:     my $startedTable = 0; # have we started an HTML table yet? (need
 4739:                           # to close it later)
 4740: 
 4741:     if (($perm{'pav'} and $perm{'vgr'}) or 
 4742: 	($helper->{VARS}->{'construction'} eq '1')) {
 4743: 	&addMessage('<br />'
 4744:                    .'<h3>'.&mt('Print Options').'</h3>'
 4745:                    .&Apache::lonhtmlcommon::start_pick_box()
 4746:                    .&Apache::lonhtmlcommon::row_title(
 4747:                        '<label for="ANSWER_TYPE_forminput">'
 4748:                       .&mt('Print Answers')
 4749:                       .'</label>'
 4750:                     )
 4751:         );
 4752:         $paramHash = Apache::lonhelper::getParamHash();
 4753: 	$paramHash->{'variable'} = 'ANSWER_TYPE';   
 4754: 	$helper->declareVar('ANSWER_TYPE');         
 4755:         $paramHash->{CHOICES} = [
 4756:                                    ['Without Answers', 'yes'],
 4757:                                    ['With Answers', 'no'],
 4758:                                    ['Only Answers', 'only']
 4759:                                 ];
 4760:         Apache::lonhelper::dropdown->new();
 4761: 	&addMessage(&Apache::lonhtmlcommon::row_closure());
 4762: 	$startedTable = 1;
 4763: 
 4764: #
 4765: #  Select font size.
 4766: #
 4767: 
 4768:             $helper->declareVar('fontsize');
 4769:             &addMessage(&Apache::lonhtmlcommon::row_title(&mt('Font Size')));
 4770:             my $xmlfrag = << "FONT_SELECTION";
 4771: 
 4772:           
 4773:             <dropdown variable='fontsize' multichoice='0', allowempty='0'>
 4774:             <defaultvalue>
 4775: 		  return 'normalsize';
 4776:             </defaultvalue>
 4777:             <choice computer='tiny'>Tiny</choice>
 4778:             <choice computer='sub/superscriptsize'>Script Size</choice>
 4779:             <choice computer='footnotesize'>Footnote Size</choice>
 4780:             <choice computer='small'>Small</choice>
 4781:             <choice computer='normalsize'>Normal (default)</choice>
 4782:             <choice computer='large'>larger than normal</choice>
 4783:             <choice computer='Large'>Even larger than normal</choice>
 4784:             <choice computer='LARGE'>Still larger than normal</choice>
 4785:             <choice computer='huge'>huge font size</choice>
 4786:             <choice computer='Huge'>Largest possible size</choice>
 4787:             </dropdown>
 4788: FONT_SELECTION
 4789:             &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 4790:             &addMessage(&Apache::lonhtmlcommon::row_closure(1));
 4791:     }
 4792: 
 4793:     if ($perm{'pav'}) {
 4794: 	if (!$startedTable) {
 4795: 	    addMessage("<hr width='33%' /><table><tr><td align='right'>".
 4796:                        '<label for="LATEX_TYPE_forminput">'.
 4797:                        &mt('LaTeX mode').
 4798:                        "</label>: </td><td>");
 4799: 	    $startedTable = 1;
 4800: 	} else {
 4801: 	    &addMessage(&Apache::lonhtmlcommon::row_title(
 4802:                            '<label for="LATEX_TYPE_forminput">'
 4803:                            .&mt('LaTeX mode')
 4804:                            .'</label>'
 4805:                         )
 4806:             );
 4807: 	}
 4808:         $paramHash = Apache::lonhelper::getParamHash();
 4809: 	$paramHash->{'variable'} = 'LATEX_TYPE';   
 4810: 	$helper->declareVar('LATEX_TYPE');  
 4811: 	if ($helper->{VARS}->{'construction'} eq '1') {       
 4812: 	    $paramHash->{CHOICES} = [
 4813: 				     ['standard LaTeX mode', 'standard'], 
 4814: 				     ['LaTeX batchmode', 'batchmode'], ];
 4815: 	} else {
 4816: 	    $paramHash->{CHOICES} = [
 4817: 				     ['LaTeX batchmode', 'batchmode'],
 4818: 				     ['standard LaTeX mode', 'standard'] ];
 4819: 	}
 4820:         Apache::lonhelper::dropdown->new();
 4821:  
 4822: 	&addMessage(&Apache::lonhtmlcommon::row_closure()
 4823:                    .&Apache::lonhtmlcommon::row_title(
 4824:                         '<label for="TABLE_CONTENTS_forminput">'
 4825:                        .&mt('Print Table of Contents')
 4826:                        .'</label>'
 4827:                     )
 4828:         );
 4829:         $paramHash = Apache::lonhelper::getParamHash();
 4830: 	$paramHash->{'variable'} = 'TABLE_CONTENTS';   
 4831: 	$helper->declareVar('TABLE_CONTENTS');         
 4832:         $paramHash->{CHOICES} = [
 4833:                                    ['No', 'no'],
 4834:                                    ['Yes', 'yes'] ];
 4835:         Apache::lonhelper::dropdown->new();
 4836: 	&addMessage(&Apache::lonhtmlcommon::row_closure());
 4837:         
 4838: 	if (not $helper->{VARS}->{'construction'}) {
 4839: 	    &addMessage(&Apache::lonhtmlcommon::row_title(
 4840:                             '<label for="TABLE_INDEX_forminput">'
 4841:                            .&mt('Print Index')
 4842:                            .'</label>'
 4843:                         )
 4844:             );
 4845: 	    $paramHash = Apache::lonhelper::getParamHash();
 4846: 	    $paramHash->{'variable'} = 'TABLE_INDEX';   
 4847: 	    $helper->declareVar('TABLE_INDEX');         
 4848: 	    $paramHash->{CHOICES} = [
 4849: 				     ['No', 'no'],
 4850: 				     ['Yes', 'yes'] ];
 4851: 	    Apache::lonhelper::dropdown->new();
 4852:             &addMessage(&Apache::lonhtmlcommon::row_closure());
 4853:             &addMessage(&Apache::lonhtmlcommon::row_title(
 4854:                             '<label for="PRINT_DISCUSSIONS_forminput">'
 4855:                            .&mt('Print Discussions')
 4856:                            .'</label>'
 4857:                         )
 4858:             );
 4859: 	    $paramHash = Apache::lonhelper::getParamHash();
 4860: 	    $paramHash->{'variable'} = 'PRINT_DISCUSSIONS';   
 4861: 	    $helper->declareVar('PRINT_DISCUSSIONS');         
 4862: 	    $paramHash->{CHOICES} = [
 4863: 				     ['No', 'no'],
 4864: 				     ['Yes', 'yes'] ];
 4865: 	    Apache::lonhelper::dropdown->new();
 4866:             &addMessage(&Apache::lonhtmlcommon::row_closure());
 4867: 
 4868: 	    # Prompt for printing annotations too.
 4869: 		
 4870: 	    &addMessage(&Apache::lonhtmlcommon::row_title(
 4871:                             '<label for="PRINT_ANNOTATIONS_forminput">'
 4872:                            .&mt('Print Annotations')
 4873:                            .'</label>'
 4874:                         )
 4875:             );
 4876: 	    $paramHash = Apache::lonhelper::getParamHash();
 4877: 	    $paramHash->{'variable'} = "PRINT_ANNOTATIONS";
 4878: 	    $helper->declareVar("PRINT_ANNOTATIONS");
 4879: 	    $paramHash->{CHOICES} = [
 4880: 				     ['No', 'no'],
 4881: 				     ['Yes', 'yes']];
 4882: 	    Apache::lonhelper::dropdown->new();
 4883:             &addMessage(&Apache::lonhtmlcommon::row_closure());
 4884: 
 4885:             &addMessage(&Apache::lonhtmlcommon::row_title(&mt('Foils')));
 4886: 	    $paramHash = Apache::lonhelper::getParamHash();
 4887: 	    $paramHash->{'multichoice'} = "true";
 4888: 	    $paramHash->{'allowempty'}  = "true";
 4889: 	    $paramHash->{'variable'}   = "showallfoils";
 4890: 	    $paramHash->{'CHOICES'} = [ [&mt('Show All Foils'), "1"] ];
 4891: 	    Apache::lonhelper::choices->new();
 4892:             &addMessage(&Apache::lonhtmlcommon::row_closure(1));
 4893: 	}
 4894: 
 4895: 	if ($helper->{'VARS'}->{'construction'}) { 
 4896: 	    my $stylevalue='$Apache::lonnet::env{"construct.style"}';
 4897:             my $randseedtext=&mt("Use random seed");
 4898:             my $stylefiletext=&mt("Use style file");
 4899:             my $selectfiletext=&mt("Select style file");
 4900: 
 4901: 	    my $xmlfrag .= '<message>'
 4902:             .&Apache::lonhtmlcommon::row_title('<label for="curseed_forminput">'
 4903:                                               .$randseedtext
 4904:                                               .'</label>'
 4905:              )
 4906:             .'</message>
 4907:             <string variable="curseed" size="15" maxlength="15">
 4908:                 <defaultvalue>
 4909:                    return '.$helper->{VARS}->{'curseed'}.';
 4910:                 </defaultvalue>'
 4911:             .'</string>'
 4912:             .'<message>'
 4913:             .&Apache::lonhtmlcommon::row_closure()
 4914:             .&Apache::lonhtmlcommon::row_title('<label for="style_file">'
 4915:                                               .$stylefiletext
 4916:                                               .'</label>'
 4917:              )
 4918:             .'</message>
 4919:              <string variable="style_file" size="40">
 4920:                 <defaultvalue>
 4921:                     return '.$stylevalue.';
 4922:                 </defaultvalue>
 4923:              </string><message>&nbsp;'
 4924: .qq|<a href="javascript:openbrowser('helpform','style_file_forminput','sty')">|
 4925: .$selectfiletext.'</a>'
 4926:             .&Apache::lonhtmlcommon::row_closure()
 4927:             .&Apache::lonhtmlcommon::row_title(&mt('Show All Foils'))
 4928:             .'</message>
 4929: 	     <choices allowempty="1" multichoice="true" variable="showallfoils">
 4930:                 <choice computer="1">&nbsp;</choice>
 4931:              </choices>'
 4932: 	    .'<message>'
 4933:             .&Apache::lonhtmlcommon::row_closure()
 4934:             .'</message>';
 4935:             &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 4936: 
 4937: 
 4938:             &addMessage(&Apache::lonhtmlcommon::row_title(&mt('Problem Type')));
 4939: 	    #
 4940: 	    # Initial value from construction space:
 4941: 	    #
 4942: 	    if (!$helper->{VARS}->{'probstatus'} && $env{'form.problemtype'}) {
 4943: 		$helper->{VARS}->{'probstatus'} = $env{'form.problemtype'};	# initial value
 4944: 	    }
 4945: 	    $xmlfrag = << "PROBTYPE";
 4946: 		<dropdown variable="probstatus" multichoice="0" allowempty="0">
 4947: 		   <defaultvalue>
 4948: 		      return "$helper->{VARS}->{'probstatus'}";
 4949:                    </defaultvalue>
 4950: 		   <choice computer="problem">Homework Problem</choice>
 4951: 		   <choice computer="exam">Bubblesheet Exam Problem</choice>
 4952: 		   <choice computer="survey">Survey question</choice>
 4953:                    ,choice computer="anonsurvey"Anonymous survey question</choice>
 4954: 		</dropdown>
 4955: PROBTYPE
 4956:             &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 4957:             &addMessage(&Apache::lonhtmlcommon::row_closure(1));
 4958: 
 4959: 
 4960: 
 4961:         }
 4962:     }
 4963: 
 4964: 
 4965: 
 4966: 
 4967:     if ($startedTable) {
 4968:         &addMessage(&Apache::lonhtmlcommon::end_pick_box());
 4969:     }
 4970: 
 4971:     Apache::lonprintout::page_format_state->new("FORMAT");
 4972: 
 4973:     # Generate the PAGESIZE state which will offer the user the margin
 4974:     # choices if they select one column
 4975:     Apache::lonhelper::state->new("PAGESIZE", "Set Margins");
 4976:     Apache::lonprintout::page_size_state->new('pagesize', 'FORMAT', 'FINAL');
 4977: 
 4978: 
 4979:     $helper->process();
 4980: 
 4981: 
 4982:     # MANUAL BAILOUT CONDITION:
 4983:     # If we're in the "final" state, bailout and return to handler
 4984:     if ($helper->{STATE} eq 'FINAL') {
 4985:         return $helper;
 4986:     }    
 4987: 
 4988:     my $footer;
 4989:     if ($helper->{STATE} eq 'START') {
 4990:         my $prtspool=$r->dir_config('lonPrtDir'); 
 4991: 	$footer = &recently_generated($prtspool);
 4992:     }
 4993:     $r->print($helper->display($footer));
 4994:     &Apache::lonhelper::unregisterHelperTags();
 4995: 
 4996:     return OK;
 4997: }
 4998: 
 4999: 
 5000: 1;
 5001: 
 5002: package Apache::lonprintout::page_format_state;
 5003: 
 5004: =pod
 5005: 
 5006: =head1 Helper element: page_format_state
 5007: 
 5008: See lonhelper.pm documentation for discussion of the helper framework.
 5009: 
 5010: Apache::lonprintout::page_format_state is an element that gives the 
 5011: user an opportunity to select the page layout they wish to print 
 5012: with: Number of columns, portrait/landscape, and paper size. If you 
 5013: want to change the paper size choices, change the @paperSize array 
 5014: contents in this package.
 5015: 
 5016: page_format_state is always directly invoked in lonprintout.pm, so there
 5017: is no tag interface. You actually pass parameters to the constructor.
 5018: 
 5019: =over 4
 5020: 
 5021: =item * B<new>(varName): varName is where the print information will be stored in the format FIXME.
 5022: 
 5023: =back
 5024: 
 5025: =cut
 5026: 
 5027: use Apache::lonhelper;
 5028: 
 5029: no strict;
 5030: @ISA = ("Apache::lonhelper::element");
 5031: use strict;
 5032: use Apache::lonlocal;
 5033: use Apache::lonnet;
 5034: 
 5035: my $maxColumns = 2;
 5036: # it'd be nice if these all worked
 5037: #my @paperSize = ("letter [8 1/2x11 in]", "legal [8 1/2x14 in]", 
 5038: #                 "tabloid (ledger) [11x17 in]", "executive [7 1/2x10 in]",
 5039: #                 "a2 [420x594 mm]", "a3 [297x420 mm]", "a4 [210x297 mm]", 
 5040: #                 "a5 [148x210 mm]", "a6 [105x148 mm]" );
 5041: my @paperSize = ("letter [8 1/2x11 in]", "legal [8 1/2x14 in]", 
 5042: 		 "a4 [210x297 mm]");
 5043: 
 5044: # Tentative format: Orientation (L = Landscape, P = portrait) | Colnum |
 5045: #                   Paper type
 5046: 
 5047: sub new { 
 5048:     my $self = Apache::lonhelper::element->new();
 5049: 
 5050:     shift;
 5051: 
 5052:     $self->{'variable'} = shift;
 5053:     my $helper = Apache::lonhelper::getHelper();
 5054:     $helper->declareVar($self->{'variable'});
 5055:     bless($self);
 5056:     return $self;
 5057: }
 5058: 
 5059: sub render {
 5060:     my $self = shift;
 5061:     my $helper = Apache::lonhelper::getHelper();
 5062:     my $result = '';
 5063:     my $var = $self->{'variable'};
 5064:     my $PageLayout=&mt('Page layout');
 5065:     my $NumberOfColumns=&mt('Number of columns');
 5066:     my $PaperType=&mt('Paper type');
 5067:     my $landscape=&mt('Landscape');
 5068:     my $portrait=&mt('Portrait');
 5069:     my $pdfFormLabel=&mt('PDF Form Fields');
 5070:     my $with=&mt('with Form Fields');
 5071:     my $without=&mt('without Form Fields');
 5072:     
 5073: 
 5074:     $result.='<h3>'.&mt('Layout Options').'</h3>'
 5075:             .&Apache::loncommon::start_data_table()
 5076:             .&Apache::loncommon::start_data_table_header_row()
 5077:             .'<th>'.$PageLayout.'</th>'
 5078:             .'<th>'.$NumberOfColumns.'</th>'
 5079:             .'<th>'.$PaperType.'</th>'
 5080:             .'<th>'.$pdfFormLabel.'</th>'
 5081:             .&Apache::loncommon::end_data_table_header_row()
 5082:             .&Apache::loncommon::start_data_table_row()
 5083:     .'<td>'
 5084:     .'<label><input type="radio" name="'.${var}.'.layout" value="L" />'.$landscape.'</label><br />'
 5085:     .'<label><input type="radio" name="'.${var}.'.layout" value="P" checked="checked" />'.$portrait.'</label>'
 5086:     .'</td>';
 5087: 
 5088:     $result.='<td align="center">'
 5089:             .'<select name="'.${var}.'.cols">';
 5090: 
 5091:     my $i;
 5092:     for ($i = 1; $i <= $maxColumns; $i++) {
 5093:         if ($i == 2) {
 5094:             $result .= '<option value="'.$i.'" selected="selected">'.$i.'</option>'."\n";
 5095:         } else {
 5096:             $result .= '<option value="'.$i.'">'.$i.'</option>'."\n";
 5097:         }
 5098:     }
 5099: 
 5100:     $result .= "</select></td><td>\n";
 5101:     $result .= "<select name='${var}.paper'>\n";
 5102: 
 5103:     my %parmhash=&Apache::lonnet::coursedescription($env{'request.course.id'});
 5104:     my $DefaultPaperSize=lc($parmhash{'default_paper_size'});
 5105:     $DefaultPaperSize=~s/\s//g;
 5106:     if ($DefaultPaperSize eq '') {$DefaultPaperSize='letter';}
 5107:     $i = 0;
 5108:     foreach (@paperSize) {
 5109: 	$_=~/(\w+)/;
 5110: 	my $papersize=$1;
 5111:         if ($paperSize[$i]=~/$DefaultPaperSize/) {
 5112:             $result .= '<option selected="selected" value="'.$papersize.'">'.$paperSize[$i].'</option>'."\n";
 5113:         } else {
 5114:             $result .= '<option value="'.$papersize.'">'.$paperSize[$i].'</option>'."\n";
 5115:         }
 5116:         $i++;
 5117:     }
 5118:     $result .= <<HTML;
 5119:         </select>
 5120:     </td>
 5121:     <td align='center'>
 5122:         <select name='${var}.pdfFormFields'>
 5123:             <option selected="selected" value="no">$without</option>
 5124:             <option value="yes">$with</option>
 5125:         </select>
 5126:     </td>
 5127: HTML
 5128:     $result.=&Apache::loncommon::end_data_table_row()
 5129:             .&Apache::loncommon::end_data_table();
 5130: 
 5131:     return $result;
 5132: }
 5133: 
 5134: sub postprocess {
 5135:     my $self = shift;
 5136: 
 5137:     my $var = $self->{'variable'};
 5138:     my $helper = Apache::lonhelper->getHelper();
 5139:     $helper->{VARS}->{$var} = 
 5140:         $env{"form.$var.layout"} . '|' . $env{"form.$var.cols"} . '|' .
 5141:         $env{"form.$var.paper"} . '|' . $env{"form.$var.pdfFormFields"};
 5142:     return 1;
 5143: }
 5144: 
 5145: 1;
 5146: 
 5147: package Apache::lonprintout::page_size_state;
 5148: 
 5149: =pod
 5150: 
 5151: =head1 Helper element: page_size_state
 5152: 
 5153: See lonhelper.pm documentation for discussion of the helper framework.
 5154: 
 5155: Apache::lonprintout::page_size_state is an element that gives the 
 5156: user the opportunity to further refine the page settings if they
 5157: select a single-column page.
 5158: 
 5159: page_size_state is always directly invoked in lonprintout.pm, so there
 5160: is no tag interface. You actually pass parameters to the constructor.
 5161: 
 5162: =over 4
 5163: 
 5164: =item * B<new>(varName): varName is where the print information will be stored in the format FIXME.
 5165: 
 5166: =back
 5167: 
 5168: =cut
 5169: 
 5170: use Apache::lonhelper;
 5171: use Apache::lonnet;
 5172: no strict;
 5173: @ISA = ("Apache::lonhelper::element");
 5174: use strict;
 5175: 
 5176: 
 5177: 
 5178: sub new { 
 5179:     my $self = Apache::lonhelper::element->new();
 5180: 
 5181:     shift; # disturbs me (probably prevents subclassing) but works (drops
 5182:            # package descriptor)... - Jeremy
 5183: 
 5184:     $self->{'variable'} = shift;
 5185:     my $helper = Apache::lonhelper::getHelper();
 5186:     $helper->declareVar($self->{'variable'});
 5187: 
 5188:     # The variable name of the format element, so we can look into 
 5189:     # $helper->{VARS} to figure out whether the columns are one or two
 5190:     $self->{'formatvar'} = shift;
 5191: 
 5192: 
 5193:     $self->{NEXTSTATE} = shift;
 5194:     bless($self);
 5195: 
 5196:     return $self;
 5197: }
 5198: 
 5199: sub render {
 5200:     my $self = shift;
 5201:     my $helper = Apache::lonhelper::getHelper();
 5202:     my $result = '';
 5203:     my $var = $self->{'variable'};
 5204: 
 5205: 
 5206: 
 5207:     if (defined $self->{ERROR_MSG}) {
 5208:         $result .= '<br /><span class="LC_error">' . $self->{ERROR_MSG} . '</span><br />';
 5209:     }
 5210: 
 5211:     my $format = $helper->{VARS}->{$self->{'formatvar'}};
 5212: 
 5213:     # Use format to get sensible defaults for the margins:
 5214: 
 5215: 
 5216:     my ($laystyle, $cols, $papersize) = split(/\|/, $format);
 5217:     ($papersize)                      = split(/ /, $papersize);
 5218: 
 5219:     $laystyle = &Apache::lonprintout::map_laystyle($laystyle);
 5220: 
 5221: 
 5222: 
 5223:     my %size;
 5224:     ($size{'width_and_units'},
 5225:      $size{'height_and_units'},
 5226:      $size{'margin_and_units'})=
 5227: 	 &Apache::lonprintout::page_format($papersize, $laystyle, $cols);
 5228:     
 5229:     foreach my $dimension ('width','height','margin') {
 5230: 	($size{$dimension},$size{$dimension.'_unit'}) =
 5231: 	    split(/ +/, $size{$dimension.'_and_units'},2);
 5232:        	
 5233: 	foreach my $unit ('cm','in') {
 5234: 	    $size{$dimension.'_options'} .= '<option ';
 5235: 	    if ($size{$dimension.'_unit'} eq $unit) {
 5236: 		$size{$dimension.'_options'} .= 'selected="selected" ';
 5237: 	    }
 5238: 	    $size{$dimension.'_options'} .= '>'.$unit.'</option>';
 5239: 	}
 5240:     }
 5241: 
 5242:     # Adjust margin for LaTeX margin: .. requires units == cm or in.
 5243: 
 5244:     if ($size{'margin_unit'} eq 'in') {
 5245: 	$size{'margin'} += 1;
 5246:     }  else {
 5247: 	$size{'margin'} += 2.54;
 5248:     }
 5249:     my %lt = &Apache::lonlocal::texthash(
 5250:         'format' => 'How should each column be formatted?',
 5251:         'width'  => 'Width',
 5252:         'height' => 'Height',
 5253:         'margin' => 'Left Margin'
 5254:     );
 5255: 
 5256:     $result .= '<p>'.$lt{'format'}.'</p>'
 5257:               .&Apache::lonhtmlcommon::start_pick_box()
 5258:               .&Apache::lonhtmlcommon::row_title($lt{'width'})
 5259:               .'<input type="text" name="'.$var.'.width" value="'.$size{'width'}.'" size="4" />'
 5260:               .'<select name="'.$var.'.widthunit">'
 5261:               .$size{'width_options'}
 5262:               .'</select>'
 5263:               .&Apache::lonhtmlcommon::row_closure()
 5264:               .&Apache::lonhtmlcommon::row_title($lt{'height'})
 5265:               .'<input type="text" name="'.$var.'.height" value="'.$size{'height'}.'" size="4" />'
 5266:               .'<select name="'.$var.'.heightunit">'
 5267:               .$size{'height_options'}
 5268:               .'</select>'
 5269:               .&Apache::lonhtmlcommon::row_closure()
 5270:               .&Apache::lonhtmlcommon::row_title($lt{'margin'})
 5271:               .'<input type="text" name="'.$var.'.lmargin" value="'.$size{'margin'}.'" size="4" />'
 5272:               .'<select name="'.$var.'.lmarginunit">'
 5273:               .$size{'margin_options'}
 5274:               .'</select>'
 5275:               .&Apache::lonhtmlcommon::row_closure(1)
 5276:               .&Apache::lonhtmlcommon::end_pick_box();
 5277:     # <p>Hint: Some instructors like to leave scratch space for the student by
 5278:     # making the width much smaller than the width of the page.</p>
 5279: 
 5280:     return $result;
 5281: }
 5282: 
 5283: 
 5284: sub preprocess {
 5285:     my $self = shift;
 5286:     my $helper = Apache::lonhelper::getHelper();
 5287: 
 5288:     my $format = $helper->{VARS}->{$self->{'formatvar'}};
 5289: 
 5290:     #  If the user does not have 'pav' privilege, set default widths and
 5291:     #  on to the next state right away.
 5292:     #
 5293:     if (!$perm{'pav'}) {
 5294: 	my $var = $self->{'variable'};
 5295: 	my $format = $helper->{VARS}->{$self->{'formatvar'}};
 5296: 	
 5297: 	my ($laystyle, $cols, $papersize) = split(/\|/, $format);
 5298: 	($papersize)                      = split(/ /, $papersize);
 5299: 	
 5300: 	
 5301: 	$laystyle = &Apache::lonprintout::map_laystyle($laystyle);
 5302: 
 5303: 	#  Figure out some good defaults for the print out and set them:
 5304: 	
 5305: 	my %size;
 5306: 	($size{'width'},
 5307: 	 $size{'height'},
 5308: 	 $size{'lmargin'})=
 5309: 	     &Apache::lonprintout::page_format($papersize, $laystyle, $cols);
 5310: 	
 5311: 	foreach my $dim ('width', 'height', 'lmargin') {
 5312: 	    my ($value, $units) = split(/ /, $size{$dim});
 5313: 	    	    
 5314: 	    $helper->{VARS}->{"$var.".$dim}      = $value;
 5315: 	    $helper->{VARS}->{"$var.".$dim.'unit'} = $units;
 5316: 	    
 5317: 	}
 5318: 	
 5319: 
 5320: 	# Transition to the next state
 5321: 
 5322: 	$helper->changeState($self->{NEXTSTATE});
 5323:     }
 5324:    
 5325:     return 1;
 5326: }
 5327: 
 5328: sub postprocess {
 5329:     my $self = shift;
 5330: 
 5331:     my $var = $self->{'variable'};
 5332:     my $helper = Apache::lonhelper->getHelper();
 5333:     my $width = $helper->{VARS}->{$var .'.width'} = $env{"form.${var}.width"}; 
 5334:     my $height = $helper->{VARS}->{$var .'.height'} = $env{"form.${var}.height"}; 
 5335:     my $lmargin = $helper->{VARS}->{$var .'.lmargin'} = $env{"form.${var}.lmargin"}; 
 5336:     $helper->{VARS}->{$var .'.widthunit'} = $env{"form.${var}.widthunit"}; 
 5337:     $helper->{VARS}->{$var .'.heightunit'} = $env{"form.${var}.heightunit"}; 
 5338:     $helper->{VARS}->{$var .'.lmarginunit'} = $env{"form.${var}.lmarginunit"}; 
 5339: 
 5340:     my $error = '';
 5341: 
 5342:     # /^-?[0-9]+(\.[0-9]*)?$/ -> optional minus, at least on digit, followed 
 5343:     # by an optional period, followed by digits, ending the string
 5344: 
 5345:     if ($width !~  /^-?[0-9]*(\.[0-9]*)?$/) {
 5346:         $error .= "Invalid width; please type only a number.<br />\n";
 5347:     }
 5348:     if ($height !~  /^-?[0-9]*(\.[0-9]*)?$/) {
 5349:         $error .= "Invalid height; please type only a number.<br />\n";
 5350:     }
 5351:     if ($lmargin !~  /^-?[0-9]*(\.[0-9]*)?$/) {
 5352:         $error .= "Invalid left margin; please type only a number.<br />\n";
 5353:     } else {
 5354: 	# Adjust for LaTeX 1.0 inch margin:
 5355: 
 5356: 	if ($env{"form.${var}.lmarginunit"} eq "in") {
 5357: 	    $helper->{VARS}->{$var.'.lmargin'} = $lmargin - 1;
 5358: 	} else {
 5359: 	    $helper->{VARS}->{$var.'.lmargin'} = $lmargin - 2.54;
 5360: 	}
 5361:     }
 5362: 
 5363:     if (!$error) {
 5364:         Apache::lonhelper::getHelper()->changeState($self->{NEXTSTATE});
 5365:         return 1;
 5366:     } else {
 5367:         $self->{ERROR_MSG} = $error;
 5368:         return 0;
 5369:     }
 5370: }
 5371: 
 5372: __END__
 5373: 

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