File:  [LON-CAPA] / loncom / interface / lonprintout.pm
Revision 1.643: download - view: text, annotated - select for diffs
Sun Sep 21 16:26:20 2014 UTC (9 years, 8 months ago) by raeburn
Branches: MAIN
CVS tags: HEAD
- Message displayed in printout when there were no resources to print
  better tailored to printing context.

    1: # The LearningOnline Network
    2: # Printout
    3: #
    4: # $Id: lonprintout.pm,v 1.643 2014/09/21 16:26:20 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 resoures 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 selcted 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: #
  720: # Implicit inputs:
  721: #   $
  722: # Returns:
  723: #   reference to an array of resources that can be passed to
  724: #   print_resources.
  725: # 
  726: sub master_seq_to_person_seq {
  727:     my ($map, $seq, $who, $code, $nohidemap) = @_;
  728: 
  729: 
  730:     my ($username, $userdomain, $usersection) = split(/:/, $who);
  731: 
  732:     # Toss the sequence up into a hash so that we have O(1) lookup time.
  733:     # on the items that come out of the user's list of resources.
  734:     #
  735: 
  736:     my %seq_hash = map {$_  => 1} @$seq;
  737:     my @output_seq;
  738: 
  739:     my $unhidden;
  740:     if ($perm{'pav'} && $perm{'vgr'} && $nohidemap) {
  741:         $unhidden = &Apache::lonnet::clutter($map);
  742:     }
  743:     
  744:     my $navmap           = Apache::lonnavmaps::navmap->new($username, $userdomain,
  745:                                                            $code, $unhidden);
  746:     my ($start,$finish);
  747: 
  748:     if ($map) {
  749:         my $mapres = $navmap->getResourceByUrl($map);
  750:         if ($mapres->is_map()) {
  751:             $start = $mapres->map_start();
  752:             $finish = $mapres->map_finish();
  753:         }
  754:     }
  755:     unless ($start && $finish) {
  756:         $start = $navmap->firstResource();
  757:         $finish = $navmap->finishResource();
  758:     }
  759: 
  760:     my $iterator         = $navmap->getIterator($start,$finish,{},1);
  761: 
  762:     #  Iterate on the resource..select the items that are randomly selected
  763:     #  and that are in the seq_has.  Presumably the iterator will take care
  764:     # of the random ordering part of the deal.
  765:     #
  766:     my $curres;
  767:     while ($curres = $iterator->next()) {
  768: 	#
  769: 	#  Only process resources..that are not removed by randomout...
  770: 	#  and are selected for printint as well.
  771: 	#
  772:         if (ref($curres) && ! $curres->randomout()) {
  773:             my $currsymb = $curres->symb();
  774:             if (exists($seq_hash{$currsymb})) {
  775:                 push(@output_seq, $currsymb);
  776: 	    }
  777: 	}
  778:     }
  779: 
  780:     return \@output_seq;		# for now.
  781:     
  782: }
  783: 
  784: 
  785: # Fetch the contents of a resource, uninterpreted.
  786: # This is used here to fetch a latex file to be included
  787: # verbatim into the printout<
  788: # NOTE: Ask Guy if there is a lonnet function similar to this?
  789: #
  790: # Parameters:
  791: #   URL of the file
  792: #
  793: sub fetch_raw_resource {
  794:     my ($url) = @_;
  795: 
  796:     my $filename  = &Apache::lonnet::filelocation("", $url);
  797:     my $contents  = &Apache::lonnet::getfile($filename);
  798: 
  799:     if ($contents == -1) {
  800: 	return "File open failed for $filename";      # This will bomb the print.
  801:     }
  802:     return $contents;
  803: 
  804:     
  805: }
  806: 
  807: #  Fetch the annotations associated with a URL and 
  808: #  put a centered 'annotations:' title.
  809: #  This is all suppressed if the annotations are empty.
  810: #
  811: sub annotate {
  812:     my ($symb) = @_;
  813: 
  814:     my $annotation_text = &Apache::loncommon::get_annotation($symb, 1);
  815: 
  816: 
  817:     my $result = "";
  818: 
  819:     if (length($annotation_text) > 0) {
  820: 	$result .= '\\hspace*{\\fill} \\\\[\\baselineskip] \textbf{Annotations:} \\\\ ';
  821: 	$result .= "\n";
  822: 	$result .= &Apache::lonxml::latex_special_symbols($annotation_text,"");	# Escape latex.
  823: 	$result .= "\n\n";
  824:     }
  825:     return $result;
  826: }
  827: 
  828: #
  829: #   Set a global document font size:
  830: #   This is done by replacing \begin{document}
  831: #   with \begin{document}{\some-font-directive
  832: #   and \end{document} with
  833: #   }\end{document
  834: #
  835: sub set_font_size {
  836: 
  837:     my ($text) = @_;
  838: 
  839:     # There appear to be cases where the font directive is empty.. in which
  840:     # case the first substituion would  insert a spurious \ oh happy day.
  841:     # as this has been the cause of much mystery and hair pulling _sigh_
  842: 
  843:     if ($font_size ne '') {
  844: 
  845: 	$text =~ s/\\begin{document}/\\begin{document}{\\$font_size/;
  846:     }
  847:     $text =~ s/\\end{document}/}\\end{document}/;
  848:     return $text;
  849: 
  850: 
  851: }
  852: 
  853: # include_pdf - PDF files are included into the 
  854: # output as follows:
  855: #  - The PDF, if necessary, is replicated.
  856: #  - The PDF is added to the list of files to convert to postscript (along with the images).
  857: #  - The LaTeX is added to include the final converted postscript in the file as an included
  858: #    job.  The assumption is that the includedpsheader.ps header will be included.
  859: #
  860: # Parameters:
  861: #   pdf_uri   - URI of the PDF file to include.
  862: #   
  863: # Returns:
  864: #  The LaTeX to include.
  865: #
  866: # Assumptions:
  867: #    The uri is actually a PDF file
  868: #    The postscript will have the includepsheader.ps included.
  869: #
  870: #
  871: sub include_pdf {
  872:     my ($pdf_uri) = @_;
  873: 
  874:     # Where is the file? If not local we'll need to repcopy it:'
  875: 
  876:     my $file = &Apache::lonnet::filelocation('', $pdf_uri);
  877:     if (! -e $file) {
  878: 	&Apache::lonnet::repcopy($file);
  879: 	$file = &Apache::lonnet::filelocation('',$pdf_uri);
  880:     }
  881: 
  882:     #  The file isn ow replicated locally.. or it did not exist in the first place
  883:     # (unlikely).  If it did exist, add the pdf to the set of files/images that
  884:     # need tob e converted for this print job:
  885: 
  886:     my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'};
  887:     $file =~ s{(.*)/res/}{$londocroot/res/};
  888: 
  889:     open(FILE,">>$Apache::lonnet::perlvar{'lonPrtDir'}/$env{'user.name'}_$env{'user.domain'}_printout.dat");
  890:     print FILE ("$file\n");
  891:     close (FILE);
  892: 
  893:     # Construct the special to put out.  To do this we need to get the
  894:     # resulting filename after conversion.  The file will have the same name
  895:     # but will be in the user's spool directory with converted images.
  896: 
  897:     my $dirname = "/home/httpd/prtspool/$env{'user.name'}/";
  898:     my ( $base, $path,  $ext) = &fileparse($file, '.pdf');
  899: #    my $destname = $dirname.'/'.$base.'.eps'; # Not really an eps but easier in printout.pl
  900:     $base =~ s/ /\_/g;
  901: 
  902: 
  903:     my $output = &print_latex_header();
  904:     $output    .= '\special{ps: _begin_job_ ('
  905: 	.$base.'.pdf.eps'.
  906: 	')run _end_job_}';
  907: 
  908:     return $output;
  909: 
  910: 
  911: }
  912: ##
  913: #  Collect the various \select_language{language_name}
  914: #  latex tags to build a \usepackage[lang-list]{babel} which will
  915: #  appear just prior to the \begin{document} at the front of the concatenated
  916: #  set of resources:
  917: # @param doc - The string of latex to search/replace.
  918: # @return string
  919: # @retval - the modified document stringt.
  920: #
  921: sub collect_languages {
  922:     my $doc = shift;
  923:     my %languages;
  924:     while ($doc =~ /\\selectlanguage{(\w+)}/mg) {
  925: 	$languages{$1} = 1;	# allows us to request each language exactly once.
  926:     }
  927:     my @lang_list = (keys(%languages)); # List of unique languages
  928:     if (scalar @lang_list) {
  929: 	my $babel_header = '\usepackage[' . join(',', @lang_list) .']{babel}'. "\n";
  930: 	$doc =~ s/\\begin{document}/$babel_header\\begin{document}/;
  931:     }
  932:     return $doc;
  933: }
  934: #-------------------------------------------------------------------
  935: 
  936: #
  937: #   ssi_with_retries- Does the server side include of a resource.
  938: #                      if the ssi call returns an error we'll retry it up to
  939: #                      the number of times requested by the caller.
  940: #                      If we still have a proble, no text is appended to the
  941: #                      output and we set some global variables.
  942: #                      to indicate to the caller an SSI error occurred.  
  943: #                      All of this is supposed to deal with the issues described
  944: #                      in LonCAPA BZ 5631 see:
  945: #                      http://bugs.lon-capa.org/show_bug.cgi?id=5631
  946: #                      by informing the user that this happened.
  947: #
  948: # Parameters:
  949: #   resource   - The resource to include.  This is passed directly, without
  950: #                interpretation to lonnet::ssi.
  951: #   form       - The form hash parameters that guide the interpretation of the resource
  952: #                
  953: #   retries    - Number of retries allowed before giving up completely.
  954: # Returns:
  955: #   On success, returns the rendered resource identified by the resource parameter.
  956: # Side Effects:
  957: #   The following global variables can be set:
  958: #    ssi_error                - If an unrecoverable error occurred this becomes true.
  959: #                               It is up to the caller to initialize this to false
  960: #                               if desired.
  961: #    ssi_last_error_resource  - If an unrecoverable error occurred, this is the value
  962: #                               of the resource that could not be rendered by the ssi
  963: #                               call.
  964: #    ssi_last_error           - The error string fetched from the ssi response
  965: #                               in the event of an error.
  966: #
  967: sub ssi_with_retries {
  968:     my ($resource, $retries, %form) = @_;
  969: 
  970:     my $target = $form{'grade_target'};
  971:     my $aom    = $form{'answer_output_mode'};
  972: 
  973: 
  974: 
  975:     my ($content, $response) = &Apache::loncommon::ssi_with_retries($resource, $retries, %form);
  976:     if (!$response->is_success) {
  977: 	$ssi_error               = 1;
  978: 	$ssi_last_error_resource = $resource;
  979: 	$ssi_last_error          = $response->code . " " . $response->message;
  980:         $content='\section*{!!! An error occurred !!!}';	
  981:     }
  982: 
  983:     return $content;
  984: 
  985: }
  986: 
  987: sub get_student_view_with_retries {
  988:     my ($curresline,$retries,$username,$userdomain,$courseid,$target,$moreenv)=@_;
  989: 
  990:     my ($content, $response) = &Apache::loncommon::get_student_view_with_retries($curresline,$retries,$username,$userdomain,$courseid,$target,$moreenv);
  991:     if (!$response->is_success) {
  992:         $ssi_error               = 1;
  993:         $ssi_last_error_resource = $curresline.' for user '.$username.':'.$userdomain;
  994:         $ssi_last_error          = $response->code . " " . $response->message;
  995:         $content='\section*{!!! An error occurred !!!}';
  996:     }
  997:     return $content;
  998: 
  999: }
 1000: 
 1001: #
 1002: #   printf_style_subst  item format_string repl
 1003: #  
 1004: # Does printf style substitution for a format string that
 1005: # can have %[n]item in it.. wherever, %[n]item occurs,
 1006: # rep is substituted in format_string.  Note that
 1007: # [n] is an optional integer length.  If provided,
 1008: # repl is truncated to at most [n] characters prior to 
 1009: # substitution.
 1010: #
 1011: sub printf_style_subst {
 1012:     my ($item, $format_string, $repl) = @_;
 1013:     my $result = "";
 1014:     while ($format_string =~ /(%)(\d*)\Q$item\E/g ) {
 1015: 	my $fmt = $1;
 1016: 	my $size = $2;
 1017: 	my $subst = $repl;
 1018: 	if ($size ne "") {
 1019: 	    $subst = substr($subst, 0, $size);
 1020: 	    
 1021: 	    #  Here's a nice edge case.. supose the end of the
 1022: 	    #  substring is a \.  In that case may have  just
 1023: 	    #  chopped off a TeX escape... in that case, we append
 1024: 	    #   " " for the trailing character, and let the field 
 1025: 	    #  spill over a bit (sigh).
 1026: 	    #  We don't just chop off the last character in order to deal
 1027: 	    #  with one last pathology, and that would be if substr had
 1028: 	    #  trimmed us to e.g. \\\  
 1029: 
 1030: 
 1031: 	    if ($subst =~ /\\$/) {
 1032: 		$subst .= " ";
 1033: 	    }
 1034: 	}
 1035: 	my $item_pos = pos($format_string);
 1036: 	$result .= substr($format_string, 0, $item_pos - length($size) -2) . $subst;
 1037:         $format_string = substr($format_string, pos($format_string));
 1038:     }
 1039: 
 1040:     # Put the residual format string into the result:
 1041: 
 1042:     $result .= $format_string;
 1043: 
 1044:     return $result;
 1045: }
 1046: 
 1047: 
 1048: # Format a header according to a format.  
 1049: # 
 1050: 
 1051: # Substitutions:
 1052: #     %a    - Assignment name.
 1053: #     %c    - Course name.
 1054: #     %n    - Student name.
 1055: #     %s    - The section if it is supplied.
 1056: #
 1057: sub format_page_header {
 1058:     my ($width, $format, $assignment, $course, $student, $section) = @_;
 1059: 
 1060: 
 1061: 
 1062:     $width = &recalcto_mm($width); # Get width in mm.
 1063:     my $chars_per_line = int($width/1.6);   # Character/textline.
 1064: 
 1065:     #  Default format?
 1066: 
 1067:     if ($format eq '') {
 1068: 	# For the default format, we may need to truncate
 1069: 	# elements..  To do this we need to get the page width.
 1070: 	# we assume that each character is about 2mm in width.
 1071: 	# (correct for the header text size??).  We ignore
 1072: 	# any formatting (e.g. boldfacing in this).
 1073: 	# 
 1074: 	# - Allow the student/course to be one line.
 1075: 	#   but only truncate the course.
 1076: 	# - Allow the assignment to be 2 lines (wrapped).
 1077: 	#
 1078: 
 1079: 	
 1080: 
 1081: 	my $name_length    = int($chars_per_line *3 /4);
 1082: 	my $sec_length     = int($chars_per_line / 5);
 1083: 
 1084: 	$format  = "%$name_length".'n';
 1085: 
 1086: 	if ($section) {
 1087: 	    $format .=  ' - Sec: '."%$sec_length".'s';
 1088: 	}
 1089: 
 1090: 	$format .= '\\\\%c \\\\ %a';
 1091:         
 1092: 
 1093:     }
 1094:     # An open question is how to handle long user formatted page headers...
 1095:     # A possible future is to support e.g. %na so that the user can control
 1096:     # the truncation of the elements that can appear in the header.
 1097:     #
 1098:     $format =  &printf_style_subst("a", $format, $assignment);
 1099:     $format =  &printf_style_subst("c", $format, $course);
 1100:     $format =  &printf_style_subst("n", $format, $student);
 1101:     $format =  &printf_style_subst("s", $format, $section);
 1102:     
 1103:     
 1104:     # If the user put %'s in the format string, they  must be escaped
 1105:     # to \% else LaTeX will think they are comments and terminate
 1106:     # the line.. which is bad!!!
 1107:     
 1108:     # If the user has role author, $course and $assignment are empty so
 1109:     # there is '\\ \\ ' in the page header. That's cause a error in LaTeX
 1110:     if($format =~ /\\\\\s\\\\\s/) {
 1111:         #TODO find sensible caption for page header
 1112:         my $testPrintout = '\\\\'.&mt('Authoring Space').' \\\\'.&mt('Test-Printout ');
 1113:         $format =~ s/\\\\\s\\\\\s/$testPrintout/;
 1114:     }
 1115:     #
 1116:     #  We're going to trust LaTeX to break lines appropriately, but
 1117:     #  we'll truncate anything that's more than 3 lines worth of
 1118:     # text.  This is also assuming (which will probably end badly)
 1119:     # nobody's going to embed LaTeX control sequences in the title
 1120:     # header or rather that those control sequences won't get broken
 1121:     # by the stuff below.
 1122:     #
 1123:     my $total_length = 3*$chars_per_line;
 1124:     if (length($format) > $total_length) {
 1125: 	$format = substr($format, 0, $total_length);
 1126:     }
 1127: 
 1128: 
 1129:     return $format;
 1130:     
 1131: }
 1132: 
 1133: #
 1134: #   Convert a numeric code to letters
 1135: #
 1136: sub num_to_letters {
 1137:     my ($num) = @_;
 1138:     my @nums= split('',$num);
 1139:     my @num_to_let=('A'..'Z');
 1140:     my $word;
 1141:     foreach my $digit (@nums) { $word.=$num_to_let[$digit]; }
 1142:     return $word;
 1143: }
 1144: #   Convert a letter code to numeric.
 1145: #
 1146: sub letters_to_num {
 1147:     my ($letters) = @_;
 1148:     my @letters = split('', uc($letters));
 1149:    my %substitution;
 1150:     my $digit = 0;
 1151:     foreach my $letter ('A'..'J') {
 1152: 	$substitution{$letter} = $digit;
 1153: 	$digit++;
 1154:     }
 1155:     #  The substitution is done as below to preserve leading
 1156:     #  zeroes which are needed to keep the code size exact
 1157:     #
 1158:     my $result ="";
 1159:     foreach my $letter (@letters) {
 1160: 	$result.=$substitution{$letter};
 1161:     }
 1162:     return $result;
 1163: }
 1164: 
 1165: #  Determine if a code is a valid numeric code.  Valid
 1166: #  numeric codes must be comprised entirely of digits and
 1167: #  have a correct number of digits.
 1168: #
 1169: #  Parameters:
 1170: #     value      - proposed code value.
 1171: #     num_digits - Number of digits required.
 1172: #
 1173: sub is_valid_numeric_code {
 1174:     my ($value, $num_digits) = @_;
 1175:     #   Remove leading/trailing whitespace;
 1176:     $value =~ s/^\s*//g;
 1177:     $value =~ s/\s*$//g;
 1178:     
 1179:     #  All digits?
 1180:     if ($value !~ /^[0-9]+$/) {
 1181: 	return "Numeric code $value has invalid characters - must only be digits";
 1182:     }
 1183:     if (length($value) != $num_digits) {
 1184: 	return "Numeric code $value incorrect number of digits (correct = $num_digits)";
 1185:     }
 1186:     return undef;
 1187: }
 1188: #   Determines if a code is a valid alhpa code.  Alpha codes
 1189: #   are ciphers that map  [A-J,a-j] -> 0..9 0..9.
 1190: #   They also have a correct digit count.
 1191: # Parameters:
 1192: #     value          - Proposed code value.
 1193: #     num_letters    - correct number of letters.
 1194: # Note:
 1195: #    leading and trailing whitespace are ignored.
 1196: #
 1197: sub is_valid_alpha_code {
 1198:     my ($value, $num_letters) = @_;
 1199:     
 1200:      # strip leading and trailing spaces.
 1201: 
 1202:     $value =~ s/^\s*//g;
 1203:     $value =~ s/\s*$//g;
 1204: 
 1205:     #  All alphas in the right range?
 1206:     if ($value !~ /^[A-J,a-j]+$/) {
 1207: 	return "Invalid letter code $value must only contain A-J";
 1208:     }
 1209:     if (length($value) != $num_letters) {
 1210: 	return "Letter code $value has incorrect number of letters (correct = $num_letters)";
 1211:     }
 1212:     return undef;
 1213: }
 1214: 
 1215: #   Determine if a code entered by the user in a helper is valid.
 1216: #   valid depends on the code type and the type of code selected.
 1217: #   The type of code selected can either be numeric or 
 1218: #   Alphabetic.  If alphabetic, the code, in fact is a simple
 1219: #   substitution cipher for the actual numeric code: 0->A, 1->B ...
 1220: #   We'll be nice and be case insensitive for alpha codes.
 1221: # Parameters:
 1222: #    code_value    - the value of the code the user typed in.
 1223: #    code_option   - The code type selected from the set in the scantron format
 1224: #                    table.
 1225: # Returns:
 1226: #    undef         - The code is valid.
 1227: #    other         - An error message indicating what's wrong.
 1228: #
 1229: sub is_code_valid {
 1230:     my ($code_value, $code_option) = @_;
 1231:     my ($code_type, $code_length) = ('letter', 6);	# defaults.
 1232:     my @lines = &Apache::grades::get_scantronformat_file();
 1233:     foreach my $line (@lines) {
 1234: 	my ($name, $type, $length) = (split(/:/, $line))[0,2,4];
 1235: 	if($name eq $code_option) {
 1236: 	    $code_length = $length;
 1237: 	    if($type eq 'number') {
 1238: 		$code_type = 'number';
 1239: 	    }
 1240: 	}
 1241:     }
 1242:     my $valid;
 1243:     if ($code_type eq 'number') {
 1244: 	return &is_valid_numeric_code($code_value, $code_length);
 1245:     } else {
 1246: 	return &is_valid_alpha_code($code_value, $code_length);
 1247:     }
 1248: 
 1249: }
 1250: #
 1251: # Compare two students by section (Used to sort by section).
 1252: #
 1253: #  Implicit inputs, 
 1254: #    $a - The first one
 1255: #    $b - The second one.
 1256: #
 1257: #  Returns:
 1258: #     a-section cmp b-section
 1259: #
 1260: sub compare_sections {
 1261:     my ($u1, $d1, $s1, $n1, $stat1) = split(/:/, $a);
 1262:     my ($u2, $d2, $s2, $n2, $stat2) = split(/:/, $b);
 1263: 
 1264:     return $s1 cmp $s2;
 1265: }
 1266: 
 1267: #   Compare two students by name.  The students are in the form
 1268: #   returned by the helper:
 1269: #      user:domain:section:last,   first:status
 1270: #   This is a helper function for the perl sort built-in  therefore:
 1271: # Implicit Inputs:
 1272: #    $a     - The first element to compare (global)
 1273: #    $b     - The second element to compare (global)
 1274: # Returns:
 1275: #   -1   - $a < $b
 1276: #    0   - $a == $b
 1277: #   +1   - $a > $b
 1278: #   Note that the initial comparison is done on the last names with the
 1279: #   first names only used to break the tie.
 1280: #
 1281: #
 1282: sub compare_names {
 1283:     #  First split the names up into the primary fields.
 1284: 
 1285:     my ($u1, $d1, $s1, $n1, $stat1) = split(/:/, $a);
 1286:     my ($u2, $d2, $s2, $n2, $stat2) = split(/:/, $b);
 1287: 
 1288:     # Now split the last name and first name of each n:
 1289:     #
 1290: 
 1291:     my ($l1,$f1) = split(/,/, $n1);
 1292:     my ($l2,$f2) = split(/,/, $n2);
 1293: 
 1294:     # We don't bother to remove the leading/trailing whitespace from the
 1295:     # firstname, unless the last names compare identical.
 1296: 
 1297:     if($l1 lt $l2) {
 1298: 	return -1;
 1299:     }
 1300:     if($l1 gt $l2) {
 1301: 	return  1;
 1302:     }
 1303: 
 1304:     # Break the tie on the first name, but there are leading (possibly trailing
 1305:     # whitespaces to get rid of first 
 1306:     #
 1307:     $f1 =~ s/^\s+//;		# Remove leading...
 1308:     $f1 =~ s/\s+$//;		# Trailing spaces from first 1...
 1309:     
 1310:     $f2 =~ s/^\s+//;
 1311:     $f2 =~ s/\s+$//;		# And the same for first 2...
 1312: 
 1313:     if($f1 lt $f2) {
 1314: 	return -1;
 1315:     }
 1316:     if($f1 gt $f2) {
 1317: 	return 1;
 1318:     }
 1319:     
 1320:     #  Must be the same name.
 1321: 
 1322:     return 0;
 1323: }
 1324: 
 1325: sub latex_header_footer_remove {
 1326:     my $text = shift;
 1327:     $text =~ s/\\end{document}//;
 1328:     $text =~ s/\\documentclass([^&]*)\\begin{document}//;
 1329:     return $text;
 1330: }
 1331: #
 1332: #  If necessary, encapsulate text inside 
 1333: #  a minipage env.
 1334: #  necessity is determined by the problem_split param.
 1335: #
 1336: sub encapsulate_minipage {
 1337:     my ($text) = @_;
 1338:     if (!($env{'form.problem.split'} =~ /yes/i)) {
 1339: 	$text = '\begin{minipage}{\textwidth}'.$text.'\end{minipage}';
 1340:     }
 1341:     return $text;
 1342: }
 1343: #
 1344: #  The NUMBER_TO_PRINT and SPLIT_PDFS
 1345: #  variables interact, this sub looks at these two parameters
 1346: #  and comes up with a final value for NUMBER_TO_PRINT which can be:
 1347: #     all     - if SPLIT_PDFS eq 'all'.
 1348: #     1       - if SPLIT_PDFS eq 'oneper'
 1349: #     section - if SPLIT_PDFS eq 'sections'
 1350: #     <unchanged> - if SPLIT_PDFS eq 'usenumber'
 1351: #
 1352: sub adjust_number_to_print {
 1353:     my $helper = shift;
 1354: 
 1355:     my $split_pdf = $helper->{'VARS'}->{'SPLIT_PDFS'};
 1356:     
 1357:     if ($split_pdf eq 'all') {
 1358: 	$helper->{'VARS'}->{'NUMBER_TO_PRINT'} = 'all';
 1359:     } elsif ($split_pdf eq 'oneper') {
 1360: 	$helper->{'VARS'}->{'NUMBER_TO_PRINT'} = 1;
 1361:     } elsif ($split_pdf eq 'sections') {
 1362: 	$helper->{'VARS'}->{'NUMBER_TO_PRINT'} = 'section';
 1363:     } elsif ($split_pdf eq 'usenumber') {
 1364: 	#  Unmodified.
 1365:     } else {
 1366: 	# Error!!!!
 1367: 	
 1368: 	croak "bad SPLIT_PDFS: $split_pdf in lonprintout::adjust_number_to_print";
 1369: 
 1370:     }
 1371: }
 1372: 
 1373: 
 1374: sub character_chart {
 1375:     my $result = shift;
 1376:     return  &Apache::entities::replace_entities($result);
 1377: }
 1378: 
 1379: sub old_character_chart {
 1380:     my $result = shift;	
 1381:     $result =~ s/&\#0?0?(7|9);//g;
 1382:     $result =~ s/&\#0?(10|13);//g;
 1383:     $result =~ s/&\#0?32;/ /g;
 1384:     $result =~ s/&\#0?33;/!/g;
 1385:     $result =~ s/&(\#0?34|quot);/\"/g;
 1386:     $result =~ s/&\#0?35;/\\\#/g;
 1387:     $result =~ s/&\#0?36;/\\\$/g;
 1388:     $result =~ s/&\#0?37;/\\%/g; 
 1389:     $result =~ s/&(\#0?38|amp);/\\&/g; 
 1390:     $result =~ s/&\#(0?39|146);/\'/g;
 1391:     $result =~ s/&\#0?40;/(/g;
 1392:     $result =~ s/&\#0?41;/)/g;
 1393:     $result =~ s/&\#0?42;/\*/g;
 1394:     $result =~ s/&\#0?43;/\+/g;
 1395:     $result =~ s/&\#(0?44|130);/,/g;
 1396:     $result =~ s/&\#0?45;/-/g;
 1397:     $result =~ s/&\#0?46;/\./g;
 1398:     $result =~ s/&\#0?47;/\//g;
 1399:     $result =~ s/&\#0?48;/0/g;
 1400:     $result =~ s/&\#0?49;/1/g;
 1401:     $result =~ s/&\#0?50;/2/g;
 1402:     $result =~ s/&\#0?51;/3/g;
 1403:     $result =~ s/&\#0?52;/4/g;
 1404:     $result =~ s/&\#0?53;/5/g;
 1405:     $result =~ s/&\#0?54;/6/g;
 1406:     $result =~ s/&\#0?55;/7/g;
 1407:     $result =~ s/&\#0?56;/8/g;
 1408:     $result =~ s/&\#0?57;/9/g;
 1409:     $result =~ s/&\#0?58;/:/g;
 1410:     $result =~ s/&\#0?59;/;/g;
 1411:     $result =~ s/&(\#0?60|lt|\#139);/\$<\$/g;
 1412:     $result =~ s/&\#0?61;/\\ensuremath\{=\}/g;
 1413:     $result =~ s/&(\#0?62|gt|\#155);/\\ensuremath\{>\}/g;
 1414:     $result =~ s/&\#0?63;/\?/g;
 1415:     $result =~ s/&\#0?65;/A/g;
 1416:     $result =~ s/&\#0?66;/B/g;
 1417:     $result =~ s/&\#0?67;/C/g;
 1418:     $result =~ s/&\#0?68;/D/g;
 1419:     $result =~ s/&\#0?69;/E/g;
 1420:     $result =~ s/&\#0?70;/F/g;
 1421:     $result =~ s/&\#0?71;/G/g;
 1422:     $result =~ s/&\#0?72;/H/g;
 1423:     $result =~ s/&\#0?73;/I/g;
 1424:     $result =~ s/&\#0?74;/J/g;
 1425:     $result =~ s/&\#0?75;/K/g;
 1426:     $result =~ s/&\#0?76;/L/g;
 1427:     $result =~ s/&\#0?77;/M/g;
 1428:     $result =~ s/&\#0?78;/N/g;
 1429:     $result =~ s/&\#0?79;/O/g;
 1430:     $result =~ s/&\#0?80;/P/g;
 1431:     $result =~ s/&\#0?81;/Q/g;
 1432:     $result =~ s/&\#0?82;/R/g;
 1433:     $result =~ s/&\#0?83;/S/g;
 1434:     $result =~ s/&\#0?84;/T/g;
 1435:     $result =~ s/&\#0?85;/U/g;
 1436:     $result =~ s/&\#0?86;/V/g;
 1437:     $result =~ s/&\#0?87;/W/g;
 1438:     $result =~ s/&\#0?88;/X/g;
 1439:     $result =~ s/&\#0?89;/Y/g;
 1440:     $result =~ s/&\#0?90;/Z/g;
 1441:     $result =~ s/&\#0?91;/[/g;
 1442:     $result =~ s/&\#0?92;/\\ensuremath\{\\setminus\}/g;
 1443:     $result =~ s/&\#0?93;/]/g;
 1444:     $result =~ s/&\#(0?94|136);/\\ensuremath\{\\wedge\}/g;
 1445:     $result =~ s/&\#(0?95|138|154);/\\underline{\\makebox[2mm]{\\strut}}/g;
 1446:     $result =~ s/&\#(0?96|145);/\`/g;
 1447:     $result =~ s/&\#0?97;/a/g;
 1448:     $result =~ s/&\#0?98;/b/g;
 1449:     $result =~ s/&\#0?99;/c/g;
 1450:     $result =~ s/&\#100;/d/g;
 1451:     $result =~ s/&\#101;/e/g;
 1452:     $result =~ s/&\#102;/f/g;
 1453:     $result =~ s/&\#103;/g/g;
 1454:     $result =~ s/&\#104;/h/g;
 1455:     $result =~ s/&\#105;/i/g;
 1456:     $result =~ s/&\#106;/j/g;
 1457:     $result =~ s/&\#107;/k/g;
 1458:     $result =~ s/&\#108;/l/g;
 1459:     $result =~ s/&\#109;/m/g;
 1460:     $result =~ s/&\#110;/n/g;
 1461:     $result =~ s/&\#111;/o/g;
 1462:     $result =~ s/&\#112;/p/g;
 1463:     $result =~ s/&\#113;/q/g;
 1464:     $result =~ s/&\#114;/r/g;
 1465:     $result =~ s/&\#115;/s/g;
 1466:     $result =~ s/&\#116;/t/g;
 1467:     $result =~ s/&\#117;/u/g;
 1468:     $result =~ s/&\#118;/v/g;
 1469:     $result =~ s/&\#119;/w/g;
 1470:     $result =~ s/&\#120;/x/g;
 1471:     $result =~ s/&\#121;/y/g;
 1472:     $result =~ s/&\#122;/z/g;
 1473:     $result =~ s/&\#123;/\\{/g;
 1474:     $result =~ s/&\#124;/\|/g;
 1475:     $result =~ s/&\#125;/\\}/g;
 1476:     $result =~ s/&\#126;/\~/g;
 1477:     $result =~ s/&\#131;/\\textflorin /g;
 1478:     $result =~ s/&\#132;/\"/g;
 1479:     $result =~ s/&\#133;/\\ensuremath\{\\ldots\}/g;
 1480:     $result =~ s/&\#134;/\\ensuremath\{\\dagger\}/g;
 1481:     $result =~ s/&\#135;/\\ensuremath\{\\ddagger\}/g;
 1482:     $result =~ s/&\#137;/\\textperthousand /g;
 1483:     $result =~ s/&\#140;/{\\OE}/g;
 1484:     $result =~ s/&\#147;/\`\`/g;
 1485:     $result =~ s/&\#148;/\'\'/g;
 1486:     $result =~ s/&\#149;/\\ensuremath\{\\bullet\}/g;
 1487:     $result =~ s/&(\#150|\#8211);/--/g;
 1488:     $result =~ s/&\#151;/---/g;
 1489:     $result =~ s/&\#152;/\\ensuremath\{\\sim\}/g;
 1490:     $result =~ s/&\#153;/\\texttrademark /g;
 1491:     $result =~ s/&\#156;/\\oe/g;
 1492:     $result =~ s/&\#159;/\\\"Y/g;
 1493:     $result =~ s/&(\#160|nbsp);/~/g;
 1494:     $result =~ s/&(\#161|iexcl);/!\`/g;
 1495:     $result =~ s/&(\#162|cent);/\\textcent /g;
 1496:     $result =~ s/&(\#163|pound);/\\pounds /g; 
 1497:     $result =~ s/&(\#164|curren);/\\textcurrency /g;
 1498:     $result =~ s/&(\#165|yen);/\\textyen /g;
 1499:     $result =~ s/&(\#166|brvbar);/\\textbrokenbar /g;
 1500:     $result =~ s/&(\#167|sect);/\\textsection /g;
 1501:     $result =~ s/&(\#168|uml);/\\"\{\} /g;
 1502:     $result =~ s/&(\#169|copy);/\\copyright /g;
 1503:     $result =~ s/&(\#170|ordf);/\\textordfeminine /g;
 1504:     $result =~ s/&(\#172|not);/\\ensuremath\{\\neg\}/g;
 1505:     $result =~ s/&(\#173|shy);/ - /g;
 1506:     $result =~ s/&(\#174|reg);/\\textregistered /g;
 1507:     $result =~ s/&(\#175|macr);/\\ensuremath\{^{-}\}/g;
 1508:     $result =~ s/&(\#176|deg);/\\ensuremath\{^{\\circ}\}/g;
 1509:     $result =~ s/&(\#177|plusmn);/\\ensuremath\{\\pm\}/g;
 1510:     $result =~ s/&(\#178|sup2);/\\ensuremath\{^2\}/g;
 1511:     $result =~ s/&(\#179|sup3);/\\ensuremath\{^3\}/g;
 1512:     $result =~ s/&(\#180|acute);/\\'\{\} /g;
 1513:     $result =~ s/&(\#181|micro);/\\ensuremath\{\\mu\}/g;
 1514:     $result =~ s/&(\#182|para);/\\P/g;
 1515:     $result =~ s/&(\#183|middot);/\\ensuremath\{\\cdot\}/g;
 1516:     $result =~ s/&(\#184|cedil);/\\c{\\strut}/g;
 1517:     $result =~ s/&(\#185|sup1);/\\ensuremath\{^1\}/g;
 1518:     $result =~ s/&(\#186|ordm);/\\textordmasculine /g;
 1519:     $result =~ s/&(\#188|frac14);/\\textonequarter /g;
 1520:     $result =~ s/&(\#189|frac12);/\\textonehalf /g;
 1521:     $result =~ s/&(\#190|frac34);/\\textthreequarters /g;
 1522:     $result =~ s/&(\#191|iquest);/?\`/g;   
 1523:     $result =~ s/&(\#192|Agrave);/\\\`{A}/g;  
 1524:     $result =~ s/&(\#193|Aacute);/\\\'{A}/g; 
 1525:     $result =~ s/&(\#194|Acirc);/\\^{A}/g;
 1526:     $result =~ s/&(\#195|Atilde);/\\~{A}/g;
 1527:     $result =~ s/&(\#196|Auml);/\\\"{A}/g; 
 1528:     $result =~ s/&(\#197|Aring);/{\\AA}/g;
 1529:     $result =~ s/&(\#198|AElig);/{\\AE}/g;
 1530:     $result =~ s/&(\#199|Ccedil);/\\c{c}/g;
 1531:     $result =~ s/&(\#200|Egrave);/\\\`{E}/g;  
 1532:     $result =~ s/&(\#201|Eacute);/\\\'{E}/g;    
 1533:     $result =~ s/&(\#202|Ecirc);/\\^{E}/g;
 1534:     $result =~ s/&(\#203|Euml);/\\\"{E}/g;
 1535:     $result =~ s/&(\#204|Igrave);/\\\`{I}/g;
 1536:     $result =~ s/&(\#205|Iacute);/\\\'{I}/g;    
 1537:     $result =~ s/&(\#206|Icirc);/\\^{I}/g;
 1538:     $result =~ s/&(\#207|Iuml);/\\\"{I}/g;    
 1539:     $result =~ s/&(\#209|Ntilde);/\\~{N}/g;
 1540:     $result =~ s/&(\#210|Ograve);/\\\`{O}/g;
 1541:     $result =~ s/&(\#211|Oacute);/\\\'{O}/g;
 1542:     $result =~ s/&(\#212|Ocirc);/\\^{O}/g;
 1543:     $result =~ s/&(\#213|Otilde);/\\~{O}/g;
 1544:     $result =~ s/&(\#214|Ouml);/\\\"{O}/g;    
 1545:     $result =~ s/&(\#215|times);/\\ensuremath\{\\times\}/g;
 1546:     $result =~ s/&(\#216|Oslash);/{\\O}/g;
 1547:     $result =~ s/&(\#217|Ugrave);/\\\`{U}/g;    
 1548:     $result =~ s/&(\#218|Uacute);/\\\'{U}/g;
 1549:     $result =~ s/&(\#219|Ucirc);/\\^{U}/g;
 1550:     $result =~ s/&(\#220|Uuml);/\\\"{U}/g;
 1551:     $result =~ s/&(\#221|Yacute);/\\\'{Y}/g;
 1552:     $result =~ s/&(\#223|szlig);/{\\ss}/g;
 1553:     $result =~ s/&(\#224|agrave);/\\\`{a}/g;
 1554:     $result =~ s/&(\#225|aacute);/\\\'{a}/g;
 1555:     $result =~ s/&(\#226|acirc);/\\^{a}/g;
 1556:     $result =~ s/&(\#227|atilde);/\\~{a}/g;
 1557:     $result =~ s/&(\#228|auml);/\\\"{a}/g;
 1558:     $result =~ s/&(\#229|aring);/{\\aa}/g;
 1559:     $result =~ s/&(\#230|aelig);/{\\ae}/g;
 1560:     $result =~ s/&(\#231|ccedil);/\\c{c}/g;
 1561:     $result =~ s/&(\#232|egrave);/\\\`{e}/g;
 1562:     $result =~ s/&(\#233|eacute);/\\\'{e}/g;
 1563:     $result =~ s/&(\#234|ecirc);/\\^{e}/g;
 1564:     $result =~ s/&(\#235|euml);/\\\"{e}/g;
 1565:     $result =~ s/&(\#236|igrave);/\\\`{i}/g;
 1566:     $result =~ s/&(\#237|iacute);/\\\'{i}/g;
 1567:     $result =~ s/&(\#238|icirc);/\\^{i}/g;
 1568:     $result =~ s/&(\#239|iuml);/\\\"{i}/g;
 1569:     $result =~ s/&(\#240|eth);/\\ensuremath\{\\partial\}/g;
 1570:     $result =~ s/&(\#241|ntilde);/\\~{n}/g;
 1571:     $result =~ s/&(\#242|ograve);/\\\`{o}/g;
 1572:     $result =~ s/&(\#243|oacute);/\\\'{o}/g;
 1573:     $result =~ s/&(\#244|ocirc);/\\^{o}/g;
 1574:     $result =~ s/&(\#245|otilde);/\\~{o}/g;
 1575:     $result =~ s/&(\#246|ouml);/\\\"{o}/g;
 1576:     $result =~ s/&(\#247|divide);/\\ensuremath\{\\div\}/g;
 1577:     $result =~ s/&(\#248|oslash);/{\\o}/g;
 1578:     $result =~ s/&(\#249|ugrave);/\\\`{u}/g; 
 1579:     $result =~ s/&(\#250|uacute);/\\\'{u}/g;
 1580:     $result =~ s/&(\#251|ucirc);/\\^{u}/g;
 1581:     $result =~ s/&(\#252|uuml);/\\\"{u}/g;
 1582:     $result =~ s/&(\#253|yacute);/\\\'{y}/g;
 1583:     $result =~ s/&(\#255|yuml);/\\\"{y}/g;
 1584:     $result =~ s/&\#295;/\\ensuremath\{\\hbar\}/g;
 1585:     $result =~ s/&\#952;/\\ensuremath\{\\theta\}/g;
 1586: #Greek Alphabet
 1587:     $result =~ s/&(alpha|\#945);/\\ensuremath\{\\alpha\}/g;
 1588:     $result =~ s/&(beta|\#946);/\\ensuremath\{\\beta\}/g;
 1589:     $result =~ s/&(gamma|\#947);/\\ensuremath\{\\gamma\}/g;
 1590:     $result =~ s/&(delta|\#948);/\\ensuremath\{\\delta\}/g;
 1591:     $result =~ s/&(epsilon|\#949);/\\ensuremath\{\\epsilon\}/g;
 1592:     $result =~ s/&(zeta|\#950);/\\ensuremath\{\\zeta\}/g;
 1593:     $result =~ s/&(eta|\#951);/\\ensuremath\{\\eta\}/g;
 1594:     $result =~ s/&(theta|\#952);/\\ensuremath\{\\theta\}/g;
 1595:     $result =~ s/&(iota|\#953);/\\ensuremath\{\\iota\}/g;
 1596:     $result =~ s/&(kappa|\#954);/\\ensuremath\{\\kappa\}/g;
 1597:     $result =~ s/&(lambda|\#955);/\\ensuremath\{\\lambda\}/g;
 1598:     $result =~ s/&(mu|\#956);/\\ensuremath\{\\mu\}/g;
 1599:     $result =~ s/&(nu|\#957);/\\ensuremath\{\\nu\}/g;
 1600:     $result =~ s/&(xi|\#958);/\\ensuremath\{\\xi\}/g;
 1601:     $result =~ s/&(omicron|\#959);/o/g;
 1602:     $result =~ s/&(pi|\#960);/\\ensuremath\{\\pi\}/g;
 1603:     $result =~ s/&(rho|\#961);/\\ensuremath\{\\rho\}/g;
 1604:     $result =~ s/&(sigma|\#963);/\\ensuremath\{\\sigma\}/g;
 1605:     $result =~ s/&(tau|\#964);/\\ensuremath\{\\tau\}/g;
 1606:     $result =~ s/&(upsilon|\#965);/\\ensuremath\{\\upsilon\}/g;
 1607:     $result =~ s/&(phi|\#966);/\\ensuremath\{\\phi\}/g;
 1608:     $result =~ s/&(chi|\#967);/\\ensuremath\{\\chi\}/g;
 1609:     $result =~ s/&(psi|\#968);/\\ensuremath\{\\psi\}/g;
 1610:     $result =~ s/&(omega|\#969);/\\ensuremath\{\\omega\}/g;
 1611:     $result =~ s/&(thetasym|\#977);/\\ensuremath\{\\vartheta\}/g;
 1612:     $result =~ s/&(piv|\#982);/\\ensuremath\{\\varpi\}/g;
 1613:     $result =~ s/&(Alpha|\#913);/A/g;
 1614:     $result =~ s/&(Beta|\#914);/B/g;
 1615:     $result =~ s/&(Gamma|\#915);/\\ensuremath\{\\Gamma\}/g;
 1616:     $result =~ s/&(Delta|\#916);/\\ensuremath\{\\Delta\}/g;
 1617:     $result =~ s/&(Epsilon|\#917);/E/g;
 1618:     $result =~ s/&(Zeta|\#918);/Z/g;
 1619:     $result =~ s/&(Eta|\#919);/H/g;
 1620:     $result =~ s/&(Theta|\#920);/\\ensuremath\{\\Theta\}/g;
 1621:     $result =~ s/&(Iota|\#921);/I/g;
 1622:     $result =~ s/&(Kappa|\#922);/K/g;
 1623:     $result =~ s/&(Lambda|\#923);/\\ensuremath\{\\Lambda\}/g;
 1624:     $result =~ s/&(Mu|\#924);/M/g;
 1625:     $result =~ s/&(Nu|\#925);/N/g;
 1626:     $result =~ s/&(Xi|\#926);/\\ensuremath\{\\Xi\}/g;
 1627:     $result =~ s/&(Omicron|\#927);/O/g;
 1628:     $result =~ s/&(Pi|\#928);/\\ensuremath\{\\Pi\}/g;
 1629:     $result =~ s/&(Rho|\#929);/P/g;
 1630:     $result =~ s/&(Sigma|\#931);/\\ensuremath\{\\Sigma\}/g;
 1631:     $result =~ s/&(Tau|\#932);/T/g;
 1632:     $result =~ s/&(Upsilon|\#933);/\\ensuremath\{\\Upsilon\}/g;
 1633:     $result =~ s/&(Phi|\#934);/\\ensuremath\{\\Phi\}/g;
 1634:     $result =~ s/&(Chi|\#935);/X/g;
 1635:     $result =~ s/&(Psi|\#936);/\\ensuremath\{\\Psi\}/g;
 1636:     $result =~ s/&(Omega|\#937);/\\ensuremath\{\\Omega\}/g;
 1637: #Arrows (extended HTML 4.01)
 1638:     $result =~ s/&(larr|\#8592);/\\ensuremath\{\\leftarrow\}/g;
 1639:     $result =~ s/&(uarr|\#8593);/\\ensuremath\{\\uparrow\}/g;
 1640:     $result =~ s/&(rarr|\#8594);/\\ensuremath\{\\rightarrow\}/g;
 1641:     $result =~ s/&(darr|\#8595);/\\ensuremath\{\\downarrow\}/g;
 1642:     $result =~ s/&(harr|\#8596);/\\ensuremath\{\\leftrightarrow\}/g;
 1643:     $result =~ s/&(lArr|\#8656);/\\ensuremath\{\\Leftarrow\}/g;
 1644:     $result =~ s/&(uArr|\#8657);/\\ensuremath\{\\Uparrow\}/g;
 1645:     $result =~ s/&(rArr|\#8658);/\\ensuremath\{\\Rightarrow\}/g;
 1646:     $result =~ s/&(dArr|\#8659);/\\ensuremath\{\\Downarrow\}/g;
 1647:     $result =~ s/&(hArr|\#8660);/\\ensuremath\{\\Leftrightarrow\}/g;
 1648: #Mathematical Operators (extended HTML 4.01)
 1649:     $result =~ s/&(forall|\#8704);/\\ensuremath\{\\forall\}/g;
 1650:     $result =~ s/&(part|\#8706);/\\ensuremath\{\\partial\}/g;
 1651:     $result =~ s/&(exist|\#8707);/\\ensuremath\{\\exists\}/g;
 1652:     $result =~ s/&(empty|\#8709);/\\ensuremath\{\\emptyset\}/g;
 1653:     $result =~ s/&(nabla|\#8711);/\\ensuremath\{\\nabla\}/g;
 1654:     $result =~ s/&(isin|\#8712);/\\ensuremath\{\\in\}/g;
 1655:     $result =~ s/&(notin|\#8713);/\\ensuremath\{\\notin\}/g;
 1656:     $result =~ s/&(ni|\#8715);/\\ensuremath\{\\ni\}/g;
 1657:     $result =~ s/&(prod|\#8719);/\\ensuremath\{\\prod\}/g;
 1658:     $result =~ s/&(sum|\#8721);/\\ensuremath\{\\sum\}/g;
 1659:     $result =~ s/&(minus|\#8722);/\\ensuremath\{-\}/g;
 1660:     $result =~ s/–/\\ensuremath\{-\}/g;
 1661:     $result =~ s/&(lowast|\#8727);/\\ensuremath\{*\}/g;
 1662:     $result =~ s/&(radic|\#8730);/\\ensuremath\{\\surd\}/g;
 1663:     $result =~ s/&(prop|\#8733);/\\ensuremath\{\\propto\}/g;
 1664:     $result =~ s/&(infin|\#8734);/\\ensuremath\{\\infty\}/g;
 1665:     $result =~ s/&(ang|\#8736);/\\ensuremath\{\\angle\}/g;
 1666:     $result =~ s/&(and|\#8743);/\\ensuremath\{\\wedge\}/g;
 1667:     $result =~ s/&(or|\#8744);/\\ensuremath\{\\vee\}/g;
 1668:     $result =~ s/&(cap|\#8745);/\\ensuremath\{\\cap\}/g;
 1669:     $result =~ s/&(cup|\#8746);/\\ensuremath\{\\cup\}/g;
 1670:     $result =~ s/&(int|\#8747);/\\ensuremath\{\\int\}/g;
 1671:     $result =~ s/&(sim|\#8764);/\\ensuremath\{\\sim\}/g;
 1672:     $result =~ s/&(cong|\#8773);/\\ensuremath\{\\cong\}/g;
 1673:     $result =~ s/&(asymp|\#8776);/\\ensuremath\{\\approx\}/g;
 1674:     $result =~ s/&(ne|\#8800);/\\ensuremath\{\\not=\}/g;
 1675:     $result =~ s/&(equiv|\#8801);/\\ensuremath\{\\equiv\}/g;
 1676:     $result =~ s/&(le|\#8804);/\\ensuremath\{\\leq\}/g;
 1677:     $result =~ s/&(ge|\#8805);/\\ensuremath\{\\geq\}/g;
 1678:     $result =~ s/&(sub|\#8834);/\\ensuremath\{\\subset\}/g;
 1679:     $result =~ s/&(sup|\#8835);/\\ensuremath\{\\supset\}/g;
 1680:     $result =~ s/&(nsub|\#8836);/\\ensuremath\{\\not\\subset\}/g;
 1681:     $result =~ s/&(sube|\#8838);/\\ensuremath\{\\subseteq\}/g;
 1682:     $result =~ s/&(supe|\#8839);/\\ensuremath\{\\supseteq\}/g;
 1683:     $result =~ s/&(oplus|\#8853);/\\ensuremath\{\\oplus\}/g;
 1684:     $result =~ s/&(otimes|\#8855);/\\ensuremath\{\\otimes\}/g;
 1685:     $result =~ s/&(perp|\#8869);/\\ensuremath\{\\perp\}/g;
 1686:     $result =~ s/&(sdot|\#8901);/\\ensuremath\{\\cdot\}/g;
 1687: #Geometric Shapes (extended HTML 4.01)
 1688:     $result =~ s/&(loz|\#9674);/\\ensuremath\{\\Diamond\}/g;
 1689: #Miscellaneous Symbols (extended HTML 4.01)
 1690:     $result =~ s/&(spades|\#9824);/\\ensuremath\{\\spadesuit\}/g;
 1691:     $result =~ s/&(clubs|\#9827);/\\ensuremath\{\\clubsuit\}/g;
 1692:     $result =~ s/&(hearts|\#9829);/\\ensuremath\{\\heartsuit\}/g;
 1693:     $result =~ s/&(diams|\#9830);/\\ensuremath\{\\diamondsuit\}/g;
 1694: #   Chemically useful 'things' contributed by Hon Kie (bug 4652).
 1695: 
 1696:     $result =~ s/&\#8636;/\\ensuremath\{\\leftharpoonup\}/g;
 1697:     $result =~ s/&\#8637;/\\ensuremath\{\\leftharpoondown\}/g;
 1698:     $result =~ s/&\#8640;/\\ensuremath\{\\rightharpoonup\}/g;
 1699:     $result =~ s/&\#8641;/\\ensuremath\{\\rightharpoondown\}/g;
 1700:     $result =~ s/&\#8652;/\\ensuremath\{\\rightleftharpoons\}/g;
 1701:     $result =~ s/&\#8605;/\\ensuremath\{\\leadsto\}/g;
 1702:     $result =~ s/&\#8617;/\\ensuremath\{\\hookleftarrow\}/g;
 1703:     $result =~ s/&\#8618;/\\ensuremath\{\\hookrightarrow\}/g;
 1704:     $result =~ s/&\#8614;/\\ensuremath\{\\mapsto\}/g;
 1705:     $result =~ s/&\#8599;/\\ensuremath\{\\nearrow\}/g;
 1706:     $result =~ s/&\#8600;/\\ensuremath\{\\searrow\}/g;
 1707:     $result =~ s/&\#8601;/\\ensuremath\{\\swarrow\}/g;
 1708:     $result =~ s/&\#8598;/\\ensuremath\{\\nwarrow\}/g;
 1709: 
 1710:     # Left/right quotations:
 1711: 
 1712:     $result =~ s/&(ldquo|#8220);/\`\`/g;
 1713:     $result =~ s/&(rdquo|#8221);/\'\'/g;
 1714: 
 1715: 
 1716: 
 1717:     return $result;
 1718: }
 1719: 
 1720: 
 1721:                   #width, height, oddsidemargin, evensidemargin, topmargin
 1722: my %page_formats=
 1723:     ('letter' => {
 1724: 	 'book' => {
 1725: 	     '1' => [ '7.1 in','9.8 in', '-0.57 in','-0.57 in','0.275 in'],
 1726: 	     '2' => ['3.66 in','9.8 in', '-0.57 in','-0.57 in','0.275 in']
 1727: 	 },
 1728: 	 'album' => {
 1729: 	     '1' => [ '8.8 in', '6.8 in','-0.55 in',  '-0.55 in','0.394 in'],
 1730: 	     '2' => [ '4.8 in', '6.8 in','-0.5 in', '-1.0 in','3.5 in']
 1731: 	 },
 1732:      },
 1733:      'legal' => {
 1734: 	 'book' => {
 1735: 	     '1' => ['7.1 in','13 in',,'-0.57 in','-0.57 in','-0.5 in'],
 1736: 	     '2' => ['3.66 in','13 in','-0.57 in','-0.57 in','-0.5 in']
 1737: 	 },
 1738: 	 'album' => {
 1739: 	     '1' => ['12 in','7.1 in',,'-0.57 in','-0.57 in','-0.5 in'],
 1740:              '2' => ['6.0 in','7.1 in','-1 in','-1 in','5 in']
 1741:           },
 1742:      },
 1743:      'tabloid' => {
 1744: 	 'book' => {
 1745: 	     '1' => ['9.8 in','16 in','-0.57 in','-0.57 in','-0.5 in'],
 1746: 	     '2' => ['4.9 in','16 in','-0.57 in','-0.57 in','-0.5 in']
 1747: 	 },
 1748: 	 'album' => {
 1749: 	     '1' => ['16 in','9.8 in','-0.57 in','-0.57 in','-0.5 in'],
 1750: 	     '2' => ['16 in','4.9 in','-0.57 in','-0.57 in','-0.5 in']
 1751:           },
 1752:      },
 1753:      'executive' => {
 1754: 	 'book' => {
 1755: 	     '1' => ['6.8 in','9 in','-0.57 in','-0.57 in','1.2 in'],
 1756: 	     '2' => ['3.1 in','9 in','-0.57 in','-0.57 in','1.2 in']
 1757: 	 },
 1758: 	 'album' => {
 1759: 	     '1' => [],
 1760: 	     '2' => []
 1761:           },
 1762:      },
 1763:      'a2' => {
 1764: 	 'book' => {
 1765: 	     '1' => [],
 1766: 	     '2' => []
 1767: 	 },
 1768: 	 'album' => {
 1769: 	     '1' => [],
 1770: 	     '2' => []
 1771:           },
 1772:      },
 1773:      'a3' => {
 1774: 	 'book' => {
 1775: 	     '1' => [],
 1776: 	     '2' => []
 1777: 	 },
 1778: 	 'album' => {
 1779: 	     '1' => [],
 1780: 	     '2' => []
 1781:           },
 1782:      },
 1783:      'a4' => {
 1784: 	 'book' => {
 1785: 	     '1' => ['17.6 cm','27.2 cm','-1.397 cm','-2.11 cm','-1.27 cm'],
 1786: 	     '2' => [ '9.1 cm','27.2 cm','-1.397 cm','-2.11 cm','-1.27 cm']
 1787: 	 },
 1788: 	 'album' => {
 1789: 	     '1' => ['21.59 cm','19.558 cm','-1.397cm','-2.11 cm','0 cm'],
 1790: 	     '2' => ['9.91 cm','19.558 cm','-1.397 cm','-2.11 cm','0 cm']
 1791: 	 },
 1792:      },
 1793:      'a5' => {
 1794: 	 'book' => {
 1795: 	     '1' => [],
 1796: 	     '2' => []
 1797: 	 },
 1798: 	 'album' => {
 1799: 	     '1' => [],
 1800: 	     '2' => []
 1801:           },
 1802:      },
 1803:      'a6' => {
 1804: 	 'book' => {
 1805: 	     '1' => [],
 1806: 	     '2' => []
 1807: 	 },
 1808: 	 'album' => {
 1809: 	     '1' => [],
 1810: 	     '2' => []
 1811:           },
 1812:      },
 1813:      );
 1814: 
 1815: sub page_format {
 1816: #
 1817: #Supported paper format: "Letter [8 1/2x11 in]",      "Legal [8 1/2x14 in]",
 1818: #                        "Ledger/Tabloid [11x17 in]", "Executive [7 1/2x10 in]",
 1819: #                        "A2 [420x594 mm]",           "A3 [297x420 mm]",
 1820: #                        "A4 [210x297 mm]",           "A5 [148x210 mm]",
 1821: #                        "A6 [105x148 mm]"
 1822: # 
 1823:     my ($papersize,$layout,$numberofcolumns) = @_; 
 1824:     return @{$page_formats{$papersize}->{$layout}->{$numberofcolumns}};
 1825: }
 1826: 
 1827: 
 1828: sub get_name {
 1829:     my ($uname,$udom)=@_;
 1830:     if (!defined($uname)) { $uname=$env{'user.name'}; }
 1831:     if (!defined($udom)) { $udom=$env{'user.domain'}; }
 1832:     my $plainname=&Apache::loncommon::plainname($uname,$udom);
 1833:     if ($plainname=~/^\s*$/) { $plainname=$uname.'@'.$udom; }
 1834:    $plainname=&Apache::lonxml::latex_special_symbols($plainname,'header');
 1835:     return $plainname;
 1836: }
 1837: 
 1838: sub get_course {
 1839:     my $courseidinfo;
 1840:     if (defined($env{'request.course.id'})) {
 1841: 	$courseidinfo = &Apache::lonxml::latex_special_symbols(&unescape($env{'course.'.$env{'request.course.id'}.'.description'}),'header');
 1842: 	my $sec = $env{'request.course.sec'};
 1843: 	    
 1844:     }
 1845:     return $courseidinfo;
 1846: }
 1847: 
 1848: sub page_format_transformation {
 1849:     my ($papersize,$layout,$numberofcolumns,$choice,$text,$assignment,$tableofcontents,$indexlist,$selectionmade) = @_; 
 1850:     my ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin);
 1851: 
 1852:     if ($selectionmade eq '4') {
 1853: 	if ($choice eq 'all_problems') {
 1854:             $assignment=&mt('Problems from the Whole Course');
 1855: 	} else {
 1856:             $assignment=&mt('Resources from the Whole Course');
 1857: 	}
 1858:     } else {
 1859: 	$assignment=&Apache::lonxml::latex_special_symbols($assignment,'header');
 1860:     }
 1861:     ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin) = &page_format($papersize,$layout,$numberofcolumns,$topmargin);
 1862: 
 1863: 
 1864:     my $name = &get_name();
 1865:     my $courseidinfo = &get_course();
 1866:     my $header_text  = $parmhash{'print_header_format'};
 1867:     $header_text     = &format_page_header($textwidth, $header_text, $assignment,
 1868: 					   $courseidinfo, $name);
 1869:     my $topmargintoinsert = '';
 1870:     if ($topmargin ne '0') {$topmargintoinsert='\setlength{\topmargin}{'.$topmargin.'}';}
 1871:     my $fancypagestatement='';
 1872:     if ($numberofcolumns eq '2') {
 1873: 	$fancypagestatement="\\fancyhead{}\\fancyhead[LO]{$header_text}";
 1874:     } else {
 1875: 	$fancypagestatement="\\rhead{}\\chead{}\\lhead{$header_text}";
 1876:     }
 1877:     if ($layout eq 'album') {
 1878: 	    $text =~ s/\\begin{document}/\\setlength{\\oddsidemargin}{$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}$fancypagestatement\\usepackage{booktabs}\\begin{document}\\voffset=-0\.8 cm\\setcounter{page}{1}\n /;
 1879:     } elsif ($layout eq 'book') {
 1880: 	if ($choice ne 'All class print') { 
 1881: 	    $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/;
 1882: 	} else {
 1883: 	    $text =~ s/\\pagestyle{fancy}\\rhead{}\\chead{}\s*\\begin{document}/\\textheight = $textheight\\oddsidemargin = $evenoffset\n\\evensidemargin = $evenoffset $topmargintoinsert\\textwidth= $textwidth\\newlength{\\minipagewidth}\n\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\\renewcommand{\\ref}{\\keephidden\}\\pagestyle{fancy}\\rhead{}\\chead{}\\usepackage{booktabs}\\begin{document}\\voffset=-0\.8cm\n\\setcounter{page}{1}  \\vskip 5 mm\n /;
 1884: 	}
 1885: 	if ($papersize eq 'a4') {
 1886: 	    my $papersize_text;
 1887: 	    if ($perm{'pav'}) {
 1888: 		$papersize_text = '\\special{papersize=210mm,297mm}';
 1889: 	    } else {
 1890: 		$papersize_text = '\special{papersize=210mm,297mm}';
 1891: 	    }
 1892: 	    $text =~ s/(\\begin{document})/$1$papersize_text/;
 1893: 	}
 1894:     }
 1895:     if ($tableofcontents eq 'yes') {$text=~s/(\\setcounter\{page\}\{1\})/$1 \\tableofcontents\\newpage /;}
 1896:     if ($indexlist eq 'yes') {
 1897: 	$text=~s/(\\begin{document})/\\makeindex $1/;
 1898: 	$text=~s/(\\end{document})/\\strut\\\\\\strut\\printindex $1/;
 1899:     }
 1900:     return $text;
 1901: }
 1902: 
 1903: 
 1904: sub page_cleanup {
 1905:     my $result = shift;	
 1906:  
 1907:     $result =~ m/\\end{document}(\d*)$/;
 1908:     my $number_of_columns = $1;
 1909:     my $insert = '{';
 1910:     for (my $id=1;$id<=$number_of_columns;$id++) { $insert .='l'; }
 1911:     $insert .= '}';
 1912:     $result =~ s/(\\begin{longtable})INSERTTHEHEADOFLONGTABLE\\endfirsthead\\endhead/$1$insert/g;
 1913:     $result =~ s/&\s*REMOVETHEHEADOFLONGTABLE\\\\/\\\\/g;
 1914:     return $result,$number_of_columns;
 1915: }
 1916: 
 1917: 
 1918: sub details_for_menu {
 1919:     my ($helper)=@_;
 1920:     my $postdata=$env{'form.postdata'};
 1921:     if (!$postdata) { $postdata=$helper->{VARS}{'postdata'}; }
 1922:     my $name_of_resource = &Apache::lonnet::gettitle($postdata);
 1923:     my $symbolic = &Apache::lonnet::symbread($postdata);
 1924:     return if ( $symbolic eq '');
 1925: 
 1926:     my ($map,$id,$resource)=&Apache::lonnet::decode_symb($symbolic);
 1927:     $map=&Apache::lonnet::clutter($map);
 1928:     my $name_of_sequence = &Apache::lonnet::gettitle($map);
 1929:     if ($name_of_sequence =~ /^\s*$/) {
 1930: 	$map =~ m|([^/]+)$|;
 1931: 	$name_of_sequence = $1;
 1932:     }
 1933:     my $name_of_map = &Apache::lonnet::gettitle($env{'request.course.uri'});
 1934:     if ($name_of_map =~ /^\s*$/) {
 1935: 	$env{'request.course.uri'} =~ m|([^/]+)$|;
 1936: 	$name_of_map = $1;
 1937:     }
 1938:     return ($name_of_resource,$name_of_sequence,$name_of_map);
 1939: }
 1940: 
 1941: sub copyright_line {
 1942:     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 } ';
 1943: }
 1944: my $end_of_student = "\n".'\special{ps:ENDOFSTUDENTSTAMP}'."\n";
 1945: 
 1946: sub latex_corrections {
 1947:     my ($number_of_columns,$result,$selectionmade,$answer_mode) = @_;
 1948: #    $result =~ s/\\includegraphics{/\\includegraphics\[width=\\minipagewidth\]{/g;
 1949:     my $copyright = &copyright_line();
 1950:     if ($selectionmade eq '1' || $answer_mode eq 'only') {
 1951: 	$result =~ s/(\\end{document})/\\strut\\vskip 0 mm $copyright $end_of_student $1/;
 1952:     } else {
 1953: 	$result =~ s/(\\end{document})/\\strut\\vspace\*{-4 mm}\\newline $copyright $end_of_student $1/;
 1954:     }
 1955:     $result =~ s/\$number_of_columns/$number_of_columns/g;
 1956:     $result =~ s/(\\end{longtable}\s*)(\\strut\\newline\\noindent\\makebox\[\\textwidth\/$number_of_columns\]\[b\]{\\hrulefill})/$2$1/g;
 1957:     $result =~ s/(\\end{longtable}\s*)\\strut\\newline/$1/g;
 1958: #-- LaTeX corrections     
 1959:     my $first_comment = index($result,'<!--',0);
 1960:     while ($first_comment != -1) {
 1961: 	my $end_comment = index($result,'-->',$first_comment);
 1962: 	substr($result,$first_comment,$end_comment-$first_comment+3) = '';
 1963: 	$first_comment = index($result,'<!--',$first_comment);
 1964:     }
 1965:     $result =~ s/^\s+$//gm; #remove empty lines
 1966:     #removes more than one empty space
 1967:     $result =~ s|(\s\s+)|($1=~/[\n\r]/)?"\n":" "|ge;
 1968:     $result =~ s/\\\\\s*\\vskip/\\vskip/gm;
 1969:     $result =~ s/\\\\\s*\\noindent\s*(\\\\)+/\\\\\\noindent /g;
 1970:     $result =~ s/{\\par }\s*\\\\/\\\\/gm;
 1971:     $result =~ s/\\\\\s+\[/ \[/g;
 1972:     #conversion of html characters to LaTeX equivalents
 1973:     if ($result =~ m/&(\w+|#\d+);/) {
 1974: 	$result = &character_chart($result);
 1975:     }
 1976:     $result =~ s/(\\end{tabular})\s*\\vskip 0 mm/$1/g;
 1977:     $result =~ s/(\\begin{enumerate})\s*\\noindent/$1/g;
 1978:     return $result;
 1979: }
 1980: 
 1981: 
 1982: sub index_table {
 1983:     my $currentURL = shift;
 1984:     my $insex_string='';
 1985:     $currentURL=~s/\.([^\/+])$/\.$1\.meta/;
 1986:     $insex_string=&Apache::lonnet::metadata($currentURL,'keywords');
 1987:     return $insex_string;
 1988: }
 1989: 
 1990: 
 1991: sub IndexCreation {
 1992:     my ($texversion,$currentURL)=@_;
 1993:     my @key_words=split(/,/,&index_table($currentURL));
 1994:     my $chunk='';
 1995:     my $st=index $texversion,'\addcontentsline{toc}{subsection}{';
 1996:     if ($st>0) {
 1997: 	for (my $i=0;$i<3;$i++) {$st=(index $texversion,'}',$st+1);}
 1998: 	$chunk=substr($texversion,0,$st+1);
 1999: 	substr($texversion,0,$st+1)=' ';
 2000:     }
 2001:     foreach my $key_word (@key_words) {
 2002: 	if ($key_word=~/\S+/) {
 2003: 	    $texversion=~s/\b($key_word)\b/$1 \\index{$key_word} /i;
 2004: 	}
 2005:     }			
 2006:     if ($st>0) {substr($texversion,0,1)=$chunk;}
 2007:     return $texversion;
 2008: }
 2009: 
 2010: sub print_latex_header {
 2011:     my $mode=shift;
 2012: 
 2013:     return &Apache::londefdef::latex_header($mode);
 2014: }
 2015: 
 2016: sub path_to_problem {
 2017:     my ($urlp,$colwidth)=@_;
 2018:     $urlp=&Apache::lonnet::clutter($urlp);
 2019: 
 2020:     my $newurlp = '';
 2021:     $colwidth=~s/\s*mm\s*$//;
 2022: #characters average about 2 mm in width
 2023:     if (length($urlp)*2 > $colwidth) {
 2024: 	my @elements = split('/',$urlp);
 2025: 	my $curlength=0;
 2026: 	foreach my $element (@elements) {
 2027: 	    if ($element eq '') { next; }
 2028: 	    if ($curlength+(length($element)*2) > $colwidth) {
 2029: 		$newurlp .=  '|\vskip -1 mm \verb|';
 2030: 		$curlength=length($element)*2;
 2031: 	    } else {
 2032: 		$curlength+=length($element)*2;
 2033: 	    }
 2034: 	    $newurlp.='/'.$element;
 2035: 	}
 2036:     } else {
 2037: 	$newurlp=$urlp;
 2038:     }
 2039:     return '{\small\noindent\verb|'.$newurlp.'|\vskip 0 mm}';
 2040: }
 2041: 
 2042: sub recalcto_mm {
 2043:     my $textwidth=shift;
 2044:     my $LaTeXwidth;
 2045:     if ($textwidth=~/(-?\d+\.?\d*)\s*cm/) {
 2046: 	$LaTeXwidth = $1*10;
 2047:     } elsif ($textwidth=~/(-?\d+\.?\d*)\s*mm/) {
 2048: 	$LaTeXwidth = $1;
 2049:     } elsif ($textwidth=~/(-?\d+\.?\d*)\s*in/) {
 2050: 	$LaTeXwidth = $1*25.4;
 2051:     }
 2052:     $LaTeXwidth.=' mm';
 2053:     return $LaTeXwidth;
 2054: }
 2055: 
 2056: sub get_textwidth {
 2057:     my ($helper,$LaTeXwidth)=@_;
 2058:     my $textwidth=$LaTeXwidth;
 2059:     if ($helper->{'VARS'}->{'pagesize.width'}=~/\d+/ &&
 2060: 	$helper->{'VARS'}->{'pagesize.widthunit'}=~/\w+/) {
 2061: 	$textwidth=&recalcto_mm($helper->{'VARS'}->{'pagesize.width'}.' '.
 2062: 				$helper->{'VARS'}->{'pagesize.widthunit'});
 2063:     }
 2064:     return $textwidth;
 2065: }
 2066: 
 2067: 
 2068: sub unsupported {
 2069:     my ($currentURL,$mode,$symb)=@_;
 2070:     if ($mode ne '') {$mode='\\'.$mode}
 2071:     my $result.= &print_latex_header($mode);
 2072:     if ($currentURL=~m|^(/adm/wrapper/)?ext/|) {
 2073: 	$currentURL=~s|^(/adm/wrapper/)?ext/|http://|;
 2074:         $currentURL=~s|^http://https://|https://|;
 2075: 	my $title=&Apache::lonnet::gettitle($symb);
 2076: 	$title = &Apache::lonxml::latex_special_symbols($title);
 2077: 	$result.=' \strut \\\\ '.$title.' \strut \\\\ '.$currentURL.' ';
 2078:     } else {
 2079: 	$result.=$currentURL;
 2080:     }
 2081:     $result.= '\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill} \end{document}';
 2082:     return $result;
 2083: }
 2084: 
 2085: #
 2086: #  Map from helper layout style to the book/album:
 2087: #
 2088: sub map_laystyle {
 2089:     my ($laystyle) = @_;
 2090:     if ($laystyle eq 'L') {
 2091: 	$laystyle='album';
 2092:     } else {
 2093: 	$laystyle='book';
 2094:     }
 2095:     return $laystyle;
 2096: }
 2097: 
 2098: sub print_page_in_course {
 2099:     my ($helper, $rparmhash, $currentURL, $resources) = @_;
 2100: 
 2101:     my %parmhash       = %$rparmhash;
 2102:     my @page_resources = @$resources;
 2103:     my $mode = $helper->{'VARS'}->{'LATEX_TYPE'};
 2104:     my $symb = $helper->{'VARS'}->{'symb'};
 2105: 
 2106: 
 2107:     my $format_from_helper = $helper->{'VARS'}->{'FORMAT'};
 2108: 
 2109: 
 2110:     my @temporary_array=split /\|/,$format_from_helper;
 2111:     my ($laystyle,$numberofcolumns,$papersize,$pdfFormFields)=@temporary_array;
 2112:     $laystyle = &map_laystyle($laystyle);
 2113:     my ($textwidth,$textheight,$oddoffset,$evenoffset) = &page_format($papersize,$laystyle,
 2114: 								      $numberofcolumns);
 2115:     my $LaTeXwidth=&recalcto_mm($textwidth); 
 2116: 
 2117: 
 2118:     if ($mode ne '') {$mode='\\'.$mode}
 2119:     my $result   =    &print_latex_header($mode);
 2120:     if ($currentURL=~m|^(/adm/wrapper/)?ext/|) {
 2121: 	$currentURL=~s|^(/adm/wrapper/)?ext/|http://|;
 2122: 	my $title=&Apache::lonnet::gettitle($symb);
 2123: 	$title = &Apache::lonxml::latex_special_symbols($title);
 2124:     } else {
 2125:         my $esc_currentURL= $currentURL;
 2126:         $esc_currentURL =~ s/_/\\_/g;
 2127: 	$result.=$esc_currentURL;
 2128:     }
 2129:     $result .= '\\\\';
 2130: 
 2131:     if ($helper->{'VARS'}->{'style_file'}=~/\w/) {
 2132: 	&Apache::lonnet::appenv({'construct.style' =>
 2133: 				$helper->{'VARS'}->{'style_file'}});
 2134:     } elsif ($env{'construct.style'}) {
 2135: 	&Apache::lonnet::delenv('construct.style');
 2136:     }
 2137: 
 2138:     # First is the overall page description.  This is then followed by the 
 2139:     # components of the page. Each of which must be printed independently.
 2140:     my $the_page = shift(@page_resources); 
 2141: 
 2142: 
 2143:     foreach my $resource (@page_resources) {
 2144: 	my $resource_src   = $resource->src(); # Essentially the URL of the resource.
 2145: 	$result           .= $resource->title() . '\\\\';
 2146: 
 2147: 	# Recurse if a .page:
 2148: 
 2149: 	if ($resource_src =~ /.page$/i) {
 2150: 	    my $navmap         = Apache::lonnavmaps::navmap->new();
 2151: 	    my @page_resources = $navmap->retrieveResources($resource_src);
 2152: 	    $result           .= &print_page_in_course($helper, $rparmhash, 
 2153: 						       $resource_src, \@page_resources);
 2154:         } elsif ($resource->ext()) {
 2155:             $result .= &unsupported($currentURL,$mode,$symb);
 2156: 	}
 2157: 	# these resources go through the XML transformer:
 2158: 
 2159: 	elsif ($resource_src =~ /\.(problem|exam|quiz|assess|survey|form|library|xml|html|htm|xhtml|xhtm)$/)  {
 2160: 
 2161: 	    my $urlp = &Apache::lonnet::clutter($resource_src);
 2162: 
 2163: 	    my %form;
 2164: 	    my %moreenv;
 2165: 
 2166: 	    &Apache::lonxml::remember_problem_counter();
 2167: 	    $moreenv{'request.filename'}=$urlp;
 2168: 	    if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {$form{'problemtype'}='exam';}
 2169: 
 2170: 	    $form{'grade_target'}  = 'tex';
 2171: 	    $form{'textwidth'}    = &get_textwidth($helper, $LaTeXwidth);
 2172: 	    $form{'pdfFormFields'} = $pdfFormFields; # 
 2173: 	    $form{'showallfoils'} = $helper->{'VARS'}->{'showallfoils'};    
 2174: 	    
 2175: 	    $form{'problem_split'}=$parmhash{'problem_stream_switch'};
 2176: 	    $form{'suppress_tries'}=$parmhash{'suppress_tries'};
 2177: 	    $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 2178: 	    $form{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
 2179: 	    $form{'print_annotations'}=$helper->{'VARS'}->{'PRINT_ANNOTATIONS'};
 2180: 	    if (($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') ||
 2181: 		($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes')) {
 2182: 		$form{'problem_split'}='yes';
 2183: 	    }
 2184: 	    my $rndseed = time;
 2185: 	    if ($helper->{'VARS'}->{'curseed'}) {
 2186: 		$rndseed=$helper->{'VARS'}->{'curseed'};
 2187: 	    }
 2188: 	    $form{'rndseed'}=$rndseed;
 2189: 	    &Apache::lonnet::appenv(\%moreenv);
 2190: 	    
 2191: 	    &Apache::lonxml::clear_problem_counter();
 2192: 
 2193: 	    my $texversion = &ssi_with_retries($urlp, $ssi_retry_count, %form);
 2194: 
 2195: 
 2196: 	    # current document with answers.. no need to encap in minipage
 2197: 	    #  since there's only one answer.
 2198: 
 2199: 	    if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 2200: 	       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 2201: 		my %answerform = %form;
 2202: 
 2203: 
 2204: 		$answerform{'problem_split'}=$parmhash{'problem_stream_switch'};
 2205: 		$answerform{'grade_target'}='answer';
 2206: 		$answerform{'answer_output_mode'}='tex';
 2207: 		$answerform{'rndseed'}=$rndseed;
 2208:                 if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {
 2209: 		    $answerform{'problemtype'}='exam';
 2210: 		}
 2211: 		$resources_printed .= $urlp.':';
 2212: 		my $answer=&ssi_with_retries($urlp,$ssi_retry_count, %answerform);
 2213: 
 2214: 		if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 2215: 		    $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
 2216: 		} else {
 2217: 		    $texversion= &print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 2218: 		    if ($helper->{'VARS'}->{'construction'} ne '1') {
 2219: 			my $title = &Apache::lonnet::gettitle($helper->{'VARS'}->{'symb'});
 2220: 			$title = &Apache::lonxml::latex_special_symbols($title);
 2221: 			$texversion.='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
 2222: 			$texversion.=&path_to_problem($urlp,$LaTeXwidth);
 2223: 		    } else {
 2224: 			$texversion.='\vskip 0 mm \noindent\textbf{'.
 2225:                         &mt("Printing from Authoring Space: No Title").'}\vskip 0 mm ';
 2226: 			$texversion.=&path_to_problem($urlp,$LaTeXwidth);
 2227: 		    }
 2228: 		    $texversion.='\vskip 1 mm '.$answer.'\end{document}';
 2229: 		}
 2230: 
 2231: 
 2232: 		
 2233: 
 2234: 	    
 2235: 	    }
 2236: 	    # Print annotations.
 2237: 
 2238: 
 2239: 	    if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 2240: 		my $annotation .= &annotate($currentURL);
 2241: 		$texversion =~ s/(\\keephidden{ENDOFPROBLEM})/$annotation$1/;
 2242: 	    }
 2243: 	    
 2244: 	    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 2245: 		$texversion=&IndexCreation($texversion,$currentURL);
 2246: 	    }
 2247: 	    if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
 2248: 		$texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$currentURL| \\strut\\\\\\strut /;
 2249: 
 2250: 	    }
 2251: 	    $texversion = &latex_header_footer_remove($texversion);
 2252: 
 2253: 	    # the first remaining line is a comment from londefdef the second
 2254: 	    # line  seems to be an extraneous \vskip 1mm \\\\ :
 2255:             # (imperfect removal from header_footer_remove?
 2256: 
 2257: 	    $texversion =~ s/\\vskip 1mm \\\\\\\\//;
 2258: 
 2259: 	    $result .= $texversion;
 2260: 	    if ($currentURL=~m/\.page\s*$/) {
 2261: 		($result,$numberofcolumns) = &page_cleanup($result);
 2262: 	    }
 2263: 	}
 2264:     }
 2265: 
 2266:     $result.= '\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill} \end{document}';
 2267:     return $result;
 2268: }
 2269: 
 2270: 
 2271: #
 2272: # List of recently generated print files
 2273: #
 2274: sub recently_generated {
 2275:     my ($prtspool) = @_;
 2276:     my $output;
 2277:     my $zip_result;
 2278:     my $pdf_result;
 2279:     opendir(DIR,$prtspool);
 2280: 
 2281:     my @files = 
 2282: 	grep(/^$env{'user.name'}_$env{'user.domain'}_printout_(\d+)_.*\.(pdf|zip)$/,readdir(DIR));
 2283:     closedir(DIR);
 2284: 
 2285:     @files = sort {
 2286: 	my ($actime) = (stat($prtspool.'/'.$a))[10];
 2287: 	my ($bctime) = (stat($prtspool.'/'.$b))[10];
 2288: 	return $bctime <=> $actime;
 2289:     } (@files);
 2290: 
 2291:     foreach my $filename (@files) {
 2292: 	my ($ext) = ($filename =~ m/(pdf|zip)$/);
 2293: 	my ($cdev,$cino,$cmode,$cnlink,
 2294: 	    $cuid,$cgid,$crdev,$csize,
 2295: 	    $catime,$cmtime,$cctime,
 2296: 	    $cblksize,$cblocks)=stat($prtspool.'/'.$filename);
 2297:         my $ext_text = 'pdf' ? &mt('PDF File'):&mt('Zip File');
 2298: 	my $result=&Apache::loncommon::start_data_table_row()
 2299:                   .'<td>'
 2300:                   .'<a href="/prtspool/'.$filename.'">'.$ext_text.'</a>'
 2301:                   .'</td>'
 2302:                   .'<td>'.&Apache::lonlocal::locallocaltime($cctime).'</td>'
 2303:                   .'<td align="right">'.$csize.'</td>'
 2304:                   .&Apache::loncommon::end_data_table_row();
 2305: 	if ($ext eq 'pdf') { $pdf_result .= $result; }
 2306: 	if ($ext eq 'zip') { $zip_result .= $result; }
 2307:     }
 2308:     if ($zip_result || $pdf_result) {
 2309:         $output ='<hr />';
 2310:     }
 2311:     if ($zip_result) {
 2312: 	$output .='<h3>'.&mt('Recently generated printout zip files')."</h3>\n"
 2313:                   .&Apache::loncommon::start_data_table()
 2314:                   .&Apache::loncommon::start_data_table_header_row()
 2315:                   .'<th>'.&mt('Download').'</th>'
 2316:                   .'<th>'.&mt('Creation Date').'</th>'
 2317:                   .'<th>'.&mt('File Size (Bytes)').'</th>'
 2318:                   .&Apache::loncommon::end_data_table_header_row()
 2319:                   .$zip_result
 2320:                   .&Apache::loncommon::end_data_table();
 2321:     }
 2322:     if ($pdf_result) {
 2323: 	$output .='<h3>'.&mt('Recently generated printouts')."</h3>\n"
 2324:                   .&Apache::loncommon::start_data_table()
 2325:                   .&Apache::loncommon::start_data_table_header_row()
 2326:                   .'<th>'.&mt('Download').'</th>'
 2327:                   .'<th>'.&mt('Creation Date').'</th>'
 2328:                   .'<th>'.&mt('File Size (Bytes)').'</th>'
 2329:                   .&Apache::loncommon::end_data_table_header_row()
 2330:                   .$pdf_result
 2331:                   .&Apache::loncommon::end_data_table();
 2332:     }
 2333:     return $output;
 2334: }
 2335: 
 2336: #
 2337: #   Retrieve the hash of page breaks.
 2338: #
 2339: #  Inputs:
 2340: #    helper   - reference to helper object.
 2341: #  Outputs
 2342: #    A reference to a page break hash.
 2343: #
 2344: #
 2345: # use Data::Dumper;
 2346: # sub dump_helper_vars {
 2347: #    my ($helper) = @_;
 2348: #    my $helpervars = Dumper($helper->{'VARS'});
 2349: #    &Apache::lonnet::logthis("Dump of helper vars:\n $helpervars");
 2350: #}
 2351: 
 2352: sub get_page_breaks  {
 2353:     my ($helper) = @_;
 2354:     my %page_breaks;
 2355: 
 2356:     foreach my $break (split /\|\|\|/, $helper->{'VARS'}->{'FINISHPAGE'}) {
 2357: 	$page_breaks{$break} = 1;
 2358:     }
 2359:     return %page_breaks;
 2360: }
 2361: # 
 2362: #   Returns text to insert for any extra vskip prior to the resource.
 2363: #   Parameters:
 2364: #     helper   - Reference to the helper object driving the printout.
 2365: #     resource - Identifies the resource about to be printed.
 2366: #
 2367: #   This is done as follows:
 2368: #    POSSIBLE_RESOURCES has the list of possible resources.
 2369: #    EXTRASPACE         has the list of extra space values.
 2370: #    EXTRASPACE_UNITS   is the set of resources for which the units are
 2371: #                       mm. All others are 'in'.
 2372: #    
 2373: #    The resource is found in the POSSIBLE_RESOURCES to get the index
 2374: #    of the EXTRASPACE value.
 2375: #
 2376: #   In order to speed this up for lengthy printouts, the first time,
 2377: #   POSSIBLE_RESOURCES is turned into a look up hash and
 2378: #   EXTRASPACE is turned into an array.
 2379: #
 2380: 
 2381: 
 2382: my %possible_resources;
 2383: my %extraspace_mm;
 2384: my @extraspace;
 2385: my $skips_loaded       = 0;
 2386: 
 2387: #  Function to load the skips hash and array
 2388: 
 2389: sub load_skips {
 2390: 
 2391:     my ($helper)  = @_;
 2392: 
 2393:     #  If this is the first time, unrap the resources and extra spaces:
 2394: 
 2395:     if (!$skips_loaded) {
 2396: 	@extraspace = (split(/\|\|\|/, $helper->{'VARS'}->{'EXTRASPACE'}));
 2397: 	my @resource_list = (split(/\|\|\|/, $helper->{'VARS'}->{'POSSIBLE_RESOURCES'}));
 2398: 	my $i = 0;
 2399: 	foreach my $resource (@resource_list) {
 2400: 	    $possible_resources{$resource} = $i;
 2401: 	    $i++;
 2402: 	}
 2403: 	foreach my $mm_resource (split(/\|\|\|/, $helper->{'VARS'}->{'EXTRASPACE_UNITS'})) {
 2404: 	    $extraspace_mm{$mm_resource} = 1;
 2405: 	}
 2406: 	$skips_loaded = 1;
 2407:     }
 2408: }
 2409: 
 2410: sub get_extra_vspaces {
 2411:     my ($helper, $resource) = @_;
 2412: 
 2413:     &load_skips($helper);
 2414: 
 2415:     #  Lookup the resource in the possible resources hash.. that is the index
 2416:     # into the extraspace array that gives us either an empty string or
 2417:     # the number of mm to skip:
 2418: 
 2419:     my $index = $possible_resources{$resource};
 2420:     my $skip  = $extraspace[$index];
 2421: 
 2422:     my $result = '';
 2423:     if ($skip ne '') {
 2424: 	my $units = 'in';
 2425: 	if (defined($extraspace_mm{$resource})) {
 2426: 	    $units = 'mm';
 2427: 	}
 2428: 	$result = '\vskip '.$skip.' '.$units;
 2429:     }
 2430: 
 2431: 	
 2432:     return $result;
 2433: 
 2434: 
 2435: }
 2436: 
 2437: #
 2438: #  The resource chooser part of the helper needs more than just
 2439: #  the value of the extraspaces var to recover the value into a text
 2440: #  field option.  This sub produces the required format for the saved var:
 2441: #  specifically 
 2442: #    ||| separated fields of the form resourcename=value
 2443: #
 2444: #  Parameters:
 2445: #    $helper     - Refers to the helper we are configuring
 2446: #  Implicit input:
 2447: #     $helper->{'VARS'}->{'EXTRASPACE'}  - the spaces helper var has the text field
 2448: #                                          value.
 2449: #     $helper->{'VARS'}->{'EXTRASPACE_UNITS'} - units for the skips (checkboxes).
 2450: #     $helper->{'VARS'}->{'POSSIBLE_RESOURCES'}  - has the list of resources. |||
 2451: #                                          separated of course.
 2452: #  Implicit outputs:
 2453: #     $env{'form.extraspace'}
 2454: #     $env{'form.extraspace_units'}
 2455: #
 2456: sub set_form_extraspace {
 2457:     my ($helper) = @_;
 2458: 
 2459:     # the most convenient way to do this is to drive from the skips arrays/hash.
 2460:     # may not be the fastest, but this is once per print request so it's not so
 2461:     # speed critical:
 2462: 
 2463:     &load_skips($helper);
 2464: 
 2465:     my $result = '';
 2466: 
 2467:     foreach my $resource (keys(%possible_resources)) {
 2468: 	my $vskip = $extraspace[$possible_resources{$resource}];
 2469: 	$result  .= $resource .'=' . $vskip . '|||';
 2470:     }
 2471: 
 2472:     $env{'form.extraspace'}  = $result;
 2473:     $env{'form.extraspace_units'} = $helper->{'VARS'}->{'EXTRASPACE_UNITS'};
 2474:     return $result;
 2475:     
 2476: }
 2477: 
 2478: #  Output a sequence (recursively if neeed)
 2479: #  from construction space.
 2480: # Parameters:
 2481: #    url     = URL of the sequence to print.
 2482: #    helper  - Reference to the helper hash.
 2483: #    form    - Copy of the format hash.
 2484: #    LaTeXWidth
 2485: # Returns:
 2486: #   Text to add to the printout.
 2487: #   NOTE if the first element of the outermost sequence
 2488: #   is itself a sequence, the outermost caller may need to
 2489: #   prefix the latex with the page headers stuff.
 2490: #
 2491: sub print_construction_sequence {
 2492:     my ($currentURL, $helper, %form, $LaTeXwidth) = @_;
 2493: 
 2494:     my $result;
 2495:     my $rndseed=time;
 2496:     if ($helper->{'VARS'}->{'curseed'}) {
 2497: 	$rndseed=$helper->{'VARS'}->{'curseed'};
 2498:     }
 2499:     my $errtext=&LONCAPA::map::mapread(&Apache::lonnet::filelocation('',$currentURL));
 2500: 
 2501:     # 
 2502:     #  These make this all support recursing for subsequences.
 2503:     #
 2504:     my @order    = @LONCAPA::map::order;
 2505:     my @resources = @LONCAPA::map::resources; 
 2506: 
 2507:     for (my $member=0;$member<=$#order;$member++) {
 2508: 	$resources[$order[$member]]=~/^([^:]*):([^:]*):/;
 2509: 	my $urlp=$2;
 2510: 	if ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library|xml|html|htm|xhtml|xhtm)$/) {
 2511: 	    my $texversion='';
 2512: 	    if ($helper->{'VARS'}->{'ANSWER_TYPE'} ne 'only') {
 2513: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 2514: 		$form{'suppress_tries'}=$parmhash{'suppress_tries'};
 2515: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 2516: 		$form{'rndseed'}=$rndseed;
 2517: 		$resources_printed .=$urlp.':';
 2518: 		$texversion=&ssi_with_retries($urlp, $ssi_retry_count, %form);
 2519: 	    }
 2520: 	    if((($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 2521: 		($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) && 
 2522: 	       ($urlp=~/$LONCAPA::assess_page_re/)) {
 2523: 		#  Don't permanently modify %$form...
 2524: 		my %answerform = %form;
 2525: 		$answerform{'grade_target'}='answer';
 2526: 		$answerform{'answer_output_mode'}='tex';
 2527: 		$answerform{'rndseed'}=$rndseed;
 2528: 		$answerform{'problem_split'}=$parmhash{'problem_stream_switch'};
 2529: 		if ($urlp=~/\/res\//) {$env{'request.state'}='published';}
 2530: 		$resources_printed .= $urlp.':';
 2531: 		my $answer=&ssi_with_retries($urlp, $ssi_retry_count, %answerform);
 2532: 		if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 2533: 		    $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
 2534: 		} else {
 2535: 		    # If necessary, encapsulate answer in minipage:
 2536: 		    
 2537: 		    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 2538: 		    my $title = &Apache::lonnet::gettitle($helper->{'VARS'}->{'symb'});
 2539: 		    $title = &Apache::lonxml::latex_special_symbols($title);
 2540: 		    my $body ='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
 2541: 		    $body.=&path_to_problem($urlp,$LaTeXwidth);
 2542: 		    $body.='\vskip 1 mm '.$answer.'\end{document}';
 2543: 		    $body = &encapsulate_minipage($body);
 2544: 		    $texversion.=$body;
 2545: 		}
 2546: 	    }
 2547: 	    $texversion = &latex_header_footer_remove($texversion);
 2548: 
 2549: 	    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 2550: 		$texversion=&IndexCreation($texversion,$urlp);
 2551: 	    }
 2552: 	    if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
 2553: 		$texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$urlp| \\strut\\\\\\strut /;
 2554: 	    }
 2555: 	    $result.=$texversion;
 2556: 
 2557: 	} elsif ($urlp=~/\.(sequence|page)$/) {
 2558:  
 2559: 	    # header:
 2560: 
 2561: 	    $result.='\strut\newline\noindent Sequence/page '.$urlp.'\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent ';
 2562: 
 2563: 	    # IF sequence, recurse:
 2564: 	    
 2565: 	    if ($urlp =~ /\.sequence$/) {
 2566: 		$result .= &print_construction_sequence($urlp, 
 2567: 							$helper, %form, 
 2568: 							$LaTeXwidth);
 2569: 	    }
 2570: 	}
 2571: 	elsif ($urlp =~ /\.pdf$/i) {
 2572: 	    my $texversion;
 2573: 	    if ($member != 0) {
 2574: 		$texversion .= '\cleardoublepage';
 2575: 	    }
 2576: 
 2577: 	    $texversion .= &include_pdf($urlp);
 2578: 	    $texversion = &latex_header_footer_remove($texversion);
 2579: 	    if ($member != $#order) {
 2580: 		$texversion .= '\\ \cleardoublepage';
 2581: 	    }
 2582: 	    
 2583: 	    $result .= $texversion;
 2584: 	}
 2585:     }
 2586:     if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\begin{document})/$1 \\fbox\{RANDOM SEED IS $rndseed\} /;}
 2587:     return $result;
 2588: }
 2589: 
 2590: #
 2591: #  Top level for generating print output.
 2592: #
 2593: #  May call print_resources if multiple resources will be printed.
 2594: #
 2595: #  The main driver is $selectionmade which reflects the type of print out
 2596: #  requested:
 2597: #   Value    Print type:
 2598: #   1        Print resource that's being looked at.
 2599: #   2        Print problems in a map or in a page.
 2600: #   3        Print pages in a map or resources in a page.
 2601: #   4        Print all problems  or all resources.
 2602: #   5        Print problems for seleted students.
 2603: #   6        Print selected problems from a folder.
 2604: #   7        Print print selected resources from some scope.
 2605: #   8        Print resources for selected students.
 2606: #
 2607: #BZ 5209
 2608: #   2        map_incomplete_problems_seq Print incomplete problems from the current
 2609: #            folder in student context.
 2610: #   5      map_incomplete_problems_people_seq Print incomplete problems from the
 2611: #            current folder in privileged context.
 2612: #    5      incomplete_problems_selpeople_course Print incomplete problems for
 2613: #            selected people from the entire course.
 2614: #
 2615: #   Item 101 has much the same processing as 8,
 2616: #
 2617: #  Differences:  Item 101, 102 require per-student filtering of the resource
 2618: #  set so that only the incomplete resources are printed.
 2619: #  For item 100, filtering was done at the helper level.
 2620: 
 2621: sub output_data {
 2622: 
 2623:     my ($r,$helper,$rparmhash) = @_;
 2624:     my %parmhash = %$rparmhash;
 2625:     $ssi_error = 0;		# This will be set nonzero by failing ssi's.
 2626:     $resources_printed = '';
 2627:     $font_size = $helper->{'VARS'}->{'fontsize'};
 2628:     my $print_type = $helper->{'VARS'}->{'PRINT_TYPE'}; # Allows textual simplification.
 2629:     my $do_postprocessing = 1;
 2630:     my $js = <<ENDPART;
 2631: <script type="text/javascript">
 2632:     var editbrowser;
 2633:     function openbrowser(formname,elementname,only,omit) {
 2634:         var url = '/res/?';
 2635:         if (editbrowser == null) {
 2636:             url += 'launch=1&';
 2637:         }
 2638:         url += 'catalogmode=interactive&';
 2639:         url += 'mode=parmset&';
 2640:         url += 'form=' + formname + '&';
 2641:         if (only != null) {
 2642:             url += 'only=' + only + '&';
 2643:         } 
 2644:         if (omit != null) {
 2645:             url += 'omit=' + omit + '&';
 2646:         }
 2647:         url += 'element=' + elementname + '';
 2648:         var title = 'Browser';
 2649:         var options = 'scrollbars=1,resizable=1,menubar=0';
 2650:         options += ',width=700,height=600';
 2651:         editbrowser = open(url,title,options,'1');
 2652:         editbrowser.focus();
 2653:     }
 2654: </script>
 2655: ENDPART
 2656: 
 2657: 
 2658:     # Breadcrumbs
 2659:     #FIXME: Choose better/different breadcrumbs?!? Links?
 2660:     my $brcrum = [{'href' => '',
 2661:                    'text' => 'Helper'}, #FIXME: Different origin possible than print out helper?
 2662:                   {'href' => '',
 2663:                    'text' => 'Preparing Printout'}];
 2664: 
 2665:     my $start_page  = &Apache::loncommon::start_page('Preparing Printout',
 2666:                                                      $js,
 2667:                                                      {'bread_crumbs' => $brcrum,});
 2668:     my $msg = &mt('Please stand by while processing your print request, this may take some time ...');
 2669: 
 2670:     $r->print($start_page."\n<p>\n$msg\n</p>\n");
 2671: 
 2672:     # fetch the pagebreaks and store them in the course environment
 2673:     # The page breaks will be pulled into the hash %page_breaks which is
 2674:     # indexed by symb and contains 1's for each break.
 2675: 
 2676:     $env{'form.pagebreaks'}  = $helper->{'VARS'}->{'FINISHPAGE'};
 2677:     &set_form_extraspace($helper);
 2678:     $env{'form.lastprinttype'} = $print_type; 
 2679:     &Apache::loncommon::store_course_settings('print',
 2680: 					      {'pagebreaks'    => 'scalar',
 2681: 					       'extraspace'    => 'scalar',
 2682: 					       'extraspace_units' => 'scalar',
 2683: 					       'lastprinttype' => 'scalar'});
 2684:     my %page_breaks  = &get_page_breaks($helper);
 2685: 
 2686:     my $format_from_helper = $helper->{'VARS'}->{'FORMAT'};
 2687:     my ($result,$selectionmade) = ('','');
 2688:     my $number_of_columns = 1; #used only for pages to determine the width of the cell
 2689:     my @temporary_array=split /\|/,$format_from_helper;
 2690:     my ($laystyle,$numberofcolumns,$papersize,$pdfFormFields)=@temporary_array;
 2691: 
 2692:     $laystyle = &map_laystyle($laystyle);
 2693:     my ($textwidth,$textheight,$oddoffset,$evenoffset) = &page_format($papersize,$laystyle,$numberofcolumns);
 2694:     my $assignment =  $env{'form.assignment'};
 2695:     my $LaTeXwidth=&recalcto_mm($textwidth); 
 2696:     my @print_array=();
 2697:     my @student_names=();
 2698: 
 2699:      
 2700:     #  Common settings for the %form has:
 2701:     # In some cases these settings get overriddent by specific cases, but the
 2702:     # settings are common enough to make it worthwhile factoring them out
 2703:     # here.
 2704:     #
 2705:     my %form;
 2706:     $form{'grade_target'} = 'tex';
 2707:     $form{'textwidth'}    = &get_textwidth($helper, $LaTeXwidth);
 2708:     $form{'pdfFormFields'} = $pdfFormFields;
 2709: 
 2710:     # If form.showallfoils is set, then request all foils be shown:
 2711:     # privilege will be enforced both by not allowing the 
 2712:     # check box selecting this option to be presnt unless it's ok,
 2713:     # and by lonresponse's priv. check.
 2714:     # The if is here because lonresponse.pm only cares that
 2715:     # showallfoils is defined, not what the value is.
 2716: 
 2717:     if ($helper->{'VARS'}->{'showallfoils'} eq "1") { 
 2718: 	$form{'showallfoils'} = $helper->{'VARS'}->{'showallfoils'};
 2719:     }
 2720:     
 2721:     if ($helper->{'VARS'}->{'style_file'}=~/\w/) {
 2722: 	&Apache::lonnet::appenv({'construct.style' =>
 2723: 				$helper->{'VARS'}->{'style_file'}});
 2724:     } elsif ($env{'construct.style'}) {
 2725: 	&Apache::lonnet::delenv('construct.style');
 2726:     }
 2727: 
 2728:     if ($print_type eq 'current_document') {
 2729:       #-- single document - problem, page, html, xml, ...
 2730: 	my ($currentURL,$cleanURL);
 2731: 
 2732: 	if ($helper->{'VARS'}->{'construction'} ne '1') {
 2733:             #prints published resource
 2734: 	    $currentURL=$helper->{'VARS'}->{'postdata'};
 2735: 	    $cleanURL=&Apache::lonenc::check_decrypt($currentURL);
 2736: 	} else {
 2737: 
 2738:             #prints resource from the construction space
 2739: 	    $currentURL=$helper->{'VARS'}->{'filename'};
 2740: 	    $cleanURL=$currentURL;
 2741: 	}
 2742: 	$selectionmade = 1;
 2743:       
 2744: 	if ($cleanURL!~m|^/adm/|
 2745: 	    && $cleanURL=~/\.(problem|exam|quiz|assess|survey|form|library|xml|html|htm|xhtml|xhtm)$/) {
 2746: 	    my $rndseed=time;
 2747: 	    my $texversion='';
 2748: 	    if ($helper->{'VARS'}->{'ANSWER_TYPE'} ne 'only') {
 2749: 		my %moreenv;
 2750: 		$moreenv{'request.filename'}=$cleanURL;
 2751:                 if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {$form{'problemtype'}='exam';}
 2752: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 2753: 		$form{'suppress_tries'}=$parmhash{'suppress_tries'};
 2754: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 2755: 		$form{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
 2756: 		$form{'print_annotations'}=$helper->{'VARS'}->{'PRINT_ANNOTATIONS'};
 2757: 		if (($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') ||
 2758: 		    ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes')) {
 2759: 		    $form{'problem_split'}='yes';
 2760: 		}
 2761: 		if ($helper->{'VARS'}->{'curseed'}) {
 2762: 		    $rndseed=$helper->{'VARS'}->{'curseed'};
 2763: 		}
 2764: 		$form{'rndseed'}=$rndseed;
 2765: 		&Apache::lonnet::appenv(\%moreenv);
 2766: 
 2767: 		&Apache::lonxml::clear_problem_counter();
 2768: 
 2769: 		$resources_printed .= $currentURL.':';
 2770: 		$texversion.=&ssi_with_retries($currentURL,$ssi_retry_count, %form);
 2771: 
 2772: 		#  Add annotations if required:
 2773: 	    
 2774: 		&Apache::lonxml::clear_problem_counter();
 2775: 
 2776: 		&Apache::lonnet::delenv('request.filename');
 2777: 	    }
 2778: 	    # current document with answers.. no need to encap in minipage
 2779: 	    #  since there's only one answer.
 2780: 
 2781: 	    if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 2782: 	       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 2783: 
 2784: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 2785: 		$form{'grade_target'}='answer';
 2786: 		$form{'answer_output_mode'}='tex';
 2787: 		$form{'rndseed'}=$rndseed;
 2788:                 if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {
 2789: 		    $form{'problemtype'}='exam';
 2790: 		}
 2791: 		$resources_printed .= $currentURL.':';
 2792: 		my $answer=&ssi_with_retries($currentURL,$ssi_retry_count, %form);
 2793: 		
 2794: 
 2795: 		if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 2796: 		    $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
 2797: 		} else {
 2798: 		    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 2799: 		    if ($helper->{'VARS'}->{'construction'} ne '1') {
 2800: 			my $title = &Apache::lonnet::gettitle($helper->{'VARS'}->{'symb'});
 2801: 			$title = &Apache::lonxml::latex_special_symbols($title);
 2802: 			$texversion.='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
 2803: 			$texversion.=&path_to_problem($cleanURL,$LaTeXwidth);
 2804: 		    } else {
 2805: 			$texversion.='\vskip 0 mm \noindent\textbf{'.
 2806:                         &mt("Printing from Authoring Space: No Title").'}\vskip 0 mm ';
 2807: 
 2808: 			$texversion.=&path_to_problem($cleanURL,$LaTeXwidth);
 2809: 		    }
 2810: 		    $texversion.='\vskip 1 mm '.$answer.'\end{document}';
 2811: 		}
 2812: 
 2813: 
 2814: 		
 2815: 
 2816: 	    
 2817: 	    }
 2818: 	    # Print annotations.
 2819: 
 2820: 
 2821: 	    if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 2822: 		my $annotation .= &annotate($currentURL);
 2823: 		$texversion =~ s/(\\keephidden{ENDOFPROBLEM})/$annotation$1/;
 2824: 	    }
 2825: 
 2826: 
 2827: 	    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 2828: 		$texversion=&IndexCreation($texversion,$currentURL);
 2829: 	    }
 2830: 	    if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
 2831: 		$texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$currentURL| \\strut\\\\\\strut /;
 2832: 
 2833: 	    }
 2834: 	    $result .= $texversion;
 2835: 	    if ($currentURL=~m/\.page\s*$/) {
 2836: 		($result,$number_of_columns) = &page_cleanup($result);
 2837: 	    }
 2838:         } elsif ($cleanURL!~m|^/adm/|
 2839: 		 && $currentURL=~/\.(sequence|page)$/ && $helper->{'VARS'}->{'construction'} eq '1') {
 2840: 	    $result .= &print_construction_sequence($currentURL, $helper, %form,
 2841: 						    $LaTeXwidth);
 2842: 	    $result .= '\end{document}';  
 2843: 	    if (!($result =~ /\\begin\{document\}/)) {
 2844: 		$result = &print_latex_header() . $result;
 2845: 	    }
 2846: 	    # End construction space sequence.
 2847: 	} elsif ($cleanURL=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) { 
 2848: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 2849: 		if ($currentURL=~/\/syllabus$/) {$currentURL=~s/\/res//;}
 2850: 		$resources_printed .= $currentURL.':';
 2851: 		my $texversion = &ssi_with_retries($currentURL, $ssi_retry_count, %form);
 2852: 		if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 2853: 		    my $annotation = &annotate($currentURL);
 2854: 		    $texversion    =~ s/(\\end{document})/$annotation$1/;
 2855: 		}
 2856: 		$result .= $texversion;
 2857: 	} elsif ($cleanURL =~/\.tex$/) {
 2858: 	    # For this sort of print of a single LaTeX file,
 2859: 	    # We can just print the LaTeX file as it is uninterpreted in any way:
 2860: 	    #
 2861: 
 2862: 	    $result = &fetch_raw_resource($currentURL);
 2863: 	    if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 2864: 		my $annotation = &annotate($currentURL);
 2865: 		$result =~ s/(\\end{document})/$annotation$1/;
 2866: 	    }
 2867: 
 2868: 	    $do_postprocessing = 0; # Don't massage the result.
 2869: 
 2870: 	} elsif ($cleanURL =~ /\.pdf$/i) {
 2871: 	    $result .= &include_pdf($cleanURL);
 2872: 	    $result .= '\end{document}';
 2873: 	} elsif ($cleanURL =~ /\.page$/i) { #  Print page in non construction space contexts.
 2874: 
 2875: 	    # Determine the set of resources in the map of the page:
 2876: 
 2877: 	    my $navmap         =  Apache::lonnavmaps::navmap->new();
 2878: 	    my @page_resources =  $navmap->retrieveResources($cleanURL);
 2879: 	    $result           .=  &print_page_in_course($helper, $rparmhash,
 2880: 							$cleanURL, \@page_resources);
 2881: 
 2882:        
 2883: 	} else {
 2884: 	    $result.=&unsupported($currentURL,$helper->{'VARS'}->{'LATEX_TYPE'},
 2885: 				  $helper->{'VARS'}->{'symb'});
 2886: 	}
 2887:     } elsif (($print_type eq 'map_problems')          or
 2888: 	     ($print_type eq 'map_problems_in_page')  or
 2889: 	     ($print_type eq 'map_resources_in_page') or
 2890:              ($print_type eq 'map_problems_pages')    or
 2891:              ($print_type eq 'all_problems')          or
 2892: 	     ($print_type eq 'all_resources')         or # BUGBUG
 2893: 	     ($print_type eq 'select_sequences')      or
 2894: 	     ($print_type eq 'map_incomplete_problems_seq')
 2895: 	     ) {
 2896:  
 2897:         #-- produce an output string
 2898: 	if (($print_type eq 'map_problems')                or
 2899: 	    ($print_type eq 'map_incomplete_problems_seq') or
 2900: 	    ($print_type eq 'map_problems_in_page') ) {
 2901: 	    $selectionmade = 2;
 2902: 	} elsif (($print_type eq 'map_problems_pages') or
 2903: 		 ($print_type eq 'map_resources_in_page'))
 2904: 	{
 2905: 	    $selectionmade = 3;
 2906: 	} elsif (($print_type eq 'all_problems') 
 2907: 		 ) {
 2908: 	    $selectionmade = 4;
 2909: 	} elsif ($print_type eq 'all_resources') {  #BUGBUG
 2910: 	    $selectionmade = 4;
 2911: 	} elsif ($print_type eq 'select_sequences') {
 2912: 	    $selectionmade = 7;
 2913: 	}
 2914: 
 2915: 	$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 2916: 	$form{'suppress_tries'}=$parmhash{'suppress_tries'};
 2917: 	$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 2918: 	$form{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
 2919: 	$form{'print_annotations'} = $helper->{'VARS'}->{'PRINT_ANNOTATIONS'};
 2920: 	if (($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes')   ||
 2921: 	    ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') ) {
 2922: 	    $form{'problem_split'}='yes';
 2923: 	}
 2924: 	my $flag_latex_header_remove = 'NO';
 2925: 	my $flag_page_in_sequence = 'NO';
 2926: 	my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
 2927: 	my $prevassignment='';
 2928: 
 2929: 	&Apache::lonxml::clear_problem_counter();
 2930: 
 2931: 	my $pbreakresources = keys %page_breaks;
 2932: 	for (my $i=0;$i<=$#master_seq;$i++) {
 2933: 
 2934: 	    &Apache::lonenc::reset_enc();
 2935: 
 2936: 
 2937: 	    # Note due to document structure, not allowed to put \newpage
 2938: 	    # prior to the first resource
 2939: 
 2940: 	    if (defined $page_breaks{$master_seq[$i]}) {
 2941: 		if($i != 0) {
 2942: 		    $result.="\\newpage\n";
 2943: 		}
 2944: 	    }
 2945: 	    $result .= &get_extra_vspaces($helper, $master_seq[$i]);
 2946: 	    my ($sequence,$middle_thingy,$urlp)=&Apache::lonnet::decode_symb($master_seq[$i]);
 2947: 	    $urlp=&Apache::lonnet::clutter($urlp);
 2948: 	    $form{'symb'}=$master_seq[$i];
 2949: 
 2950: 	    my $assignment=&Apache::lonxml::latex_special_symbols(&Apache::lonnet::gettitle($sequence),'header'); #title of the assignment which contains this problem
 2951: 
 2952: 	    if ($selectionmade==7) {$helper->{VARS}->{'assignment'}=$assignment;}
 2953: 	    if ($i==0) {$prevassignment=$assignment;}
 2954: 	    my $texversion='';
 2955: 	    if ($urlp!~m|^/adm/|
 2956: 		&& $urlp=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
 2957: 		$resources_printed .= $urlp.':';
 2958: 		&Apache::lonxml::remember_problem_counter();
 2959: 		if ($flag_latex_header_remove eq 'NO') {
 2960: 		    $texversion.=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});  # RF
 2961:                     unless (($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only') ||
 2962:                             (($i==0) &&
 2963:                              (($urlp=~/\.page$/) ||
 2964:                               ($print_type eq 'map_problems_in_page') ||
 2965:                               ($print_type eq 'map_resources_in_page')))) {
 2966:                         $flag_latex_header_remove = 'YES';
 2967:                     }
 2968: 		}
 2969: 		$texversion.=&ssi_with_retries($urlp, $ssi_retry_count, %form);
 2970: 		if ($urlp=~/\.page$/) {
 2971: 		    ($texversion,my $number_of_columns_page) = &page_cleanup($texversion);
 2972: 		    if ($number_of_columns_page > $number_of_columns) {$number_of_columns=$number_of_columns_page;} 
 2973: 		    $texversion =~ s/\\end{document}\d*/\\end{document}/;
 2974: 		    $flag_page_in_sequence = 'YES';
 2975: 		}
 2976: 
 2977: 		if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 2978: 		   ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 2979: 		    #  Don't permanently pervert the %form hash
 2980: 		    my %answerform = %form;
 2981: 		    $answerform{'grade_target'}='answer';
 2982: 		    $answerform{'answer_output_mode'}='tex';
 2983: 		    $resources_printed .= $urlp.':';
 2984: 
 2985: 		    &Apache::lonxml::restore_problem_counter();
 2986: 		    my $answer=&ssi_with_retries($urlp, $ssi_retry_count, %answerform);
 2987:                     if ($urlp =~ /\.page$/) {
 2988:                         $answer =~ s/\\end{document}(\d*)$//;
 2989:                     }
 2990: 		    if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 2991:                         if ($urlp =~ /\.page$/) {
 2992:                             my @probs = split(/\\keephidden{ENDOFPROBLEM}/,$texversion);
 2993:                             my $lastprob = pop(@probs);
 2994:                             $texversion = join('\keephidden{ENDOFPROBLEM}',@probs).
 2995:                             $answer.'\keephidden{ENDOFPROBLEM}'.$lastprob;
 2996:                         } else {
 2997:                             $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
 2998:                         }
 2999: 		    } else {
 3000: 			if ($urlp=~/$LONCAPA::assess_page_re/) {
 3001: 			    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 3002: #			    $texversion =~ s/\\begin{document}//; # FIXME
 3003: 			    my $title = &Apache::lonnet::gettitle($master_seq[$i]);
 3004: 			    $title = &Apache::lonxml::latex_special_symbols($title);
 3005: 			    my $body ='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
 3006: 			    $body   .= &path_to_problem ($urlp,$LaTeXwidth);
 3007: 			    $body   .='\vskip 1 mm '.$answer;
 3008: 			    $body    = &encapsulate_minipage($body);
 3009: 			    $texversion .= $body;
 3010: 			} else {
 3011: 			    $texversion='';
 3012: 			}
 3013: 		    }
 3014: 
 3015: 		}
 3016: 		if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 3017: 		    my $annotation .= &annotate($urlp);
 3018: 		    $texversion =~ s/(\\keephidden{ENDOFPROBLEM})/$annotation$1/;
 3019: 		}
 3020: 
 3021: 		if ($flag_latex_header_remove ne 'NO') {
 3022: 		    $texversion = &latex_header_footer_remove($texversion);
 3023: 		} else {
 3024: 		    $texversion =~ s/\\end{document}//;
 3025: 		}
 3026: 		if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 3027: 		    $texversion=&IndexCreation($texversion,$urlp);
 3028: 		}
 3029: 		if (($selectionmade == 4) and ($assignment ne $prevassignment)) {
 3030: 		    my $name = &get_name();
 3031: 		    my $courseidinfo = &get_course();
 3032: 		    $prevassignment=$assignment;
 3033: 		    my $header_text = $parmhash{'print_header_format'};
 3034: 		    $header_text    = &format_page_header($textwidth, $header_text,
 3035: 							  $assignment, 
 3036: 							  $courseidinfo, 
 3037: 							  $name);
 3038: 		    if ($numberofcolumns eq '1') {
 3039: 			$result .='\newpage \noindent\parbox{\minipagewidth}{\noindent\\lhead{'.$header_text.'}} \vskip 5 mm ';
 3040: 		    } else {
 3041: 			$result .='\newpage \noindent\parbox{\minipagewidth}{\noindent\\fancyhead[LO]{'.$header_text.'}} \vskip 5 mm ';
 3042: 		    }			
 3043: 		}
 3044: 		$result .= $texversion;
 3045: 		$flag_latex_header_remove = 'YES';   
 3046: 	    } elsif ($urlp=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) { 
 3047: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 3048: 		if ($urlp=~/\/syllabus$/) {$urlp=~s/\/res//;}
 3049: 		$resources_printed .= $urlp.':';
 3050: 		my $texversion = &ssi_with_retries($urlp, $ssi_retry_count, %form);
 3051: 		if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 3052: 		    my $annotation = &annotate($urlp);
 3053: 		    $texversion =~ s/(\\end{document)/$annotation$1/;
 3054: 		}
 3055: 
 3056: 		if ($flag_latex_header_remove ne 'NO') {
 3057: 		    $texversion = &latex_header_footer_remove($texversion);
 3058: 		} else {	
 3059: 		    $texversion =~ s/\\end{document}/\\vskip 0\.5mm\\noindent\\makebox\[\\textwidth\/\$number_of_columns\]\[b\]\{\\hrulefill\}/;
 3060: 		}
 3061: 		$result .= $texversion;
 3062: 		$flag_latex_header_remove = 'YES'; 
 3063: 	    } elsif ($urlp=~ /\.pdf$/i) {
 3064: 		if ($i > 0) {
 3065: 		    $result .= '\cleardoublepage';
 3066: 		}
 3067:                 my $texfrompdf = &include_pdf($urlp);
 3068:                 if ($flag_latex_header_remove ne 'NO') {
 3069:                     $texfrompdf = &latex_header_footer_remove($texfrompdf);
 3070:                 }
 3071:                 $result .= $texfrompdf;
 3072: 		if ($i != $#master_seq) {
 3073: 		    if ($numberofcolumns eq '1') {
 3074: 			$result .= '\newpage';
 3075: 		    } else {
 3076: 			# the \\'s seem to be needed to let LaTeX know there's something
 3077: 			# on the page since LaTeX seems to not like to clear an empty page.
 3078: 			#
 3079: 			$result .= '\\ \cleardoublepage';
 3080: 		    }
 3081: 		}
 3082: 		$flag_latex_header_remove = 'YES';
 3083: 
 3084: 	    } else {
 3085: 		$texversion=&unsupported($urlp,$helper->{'VARS'}->{'LATEX_TYPE'},
 3086: 					 $master_seq[$i]);
 3087: 		if ($flag_latex_header_remove ne 'NO') {
 3088: 		    $texversion = &latex_header_footer_remove($texversion);
 3089: 		} else {
 3090: 		    $texversion =~ s/\\end{document}//;
 3091: 		}
 3092: 		$result .= $texversion;
 3093: 		$flag_latex_header_remove = 'YES';   
 3094: 	    }
 3095: 	    if (&Apache::loncommon::connection_aborted($r)) { 
 3096: 		last; 
 3097: 	    }
 3098: 	}
 3099: 	&Apache::lonxml::clear_problem_counter();
 3100: 	if ($flag_page_in_sequence eq 'YES') {
 3101: 	    $result =~ s/\\usepackage{calc}/\\usepackage{calc}\\usepackage{longtable}/;
 3102: 	}	
 3103: 	$result .= '\end{document}';
 3104:      } elsif (($print_type eq 'problems_for_students')           ||
 3105: 	      ($print_type eq 'problems_for_students_from_page') ||
 3106: 	      ($print_type eq 'all_problems_students')           ||
 3107: 	      ($print_type eq 'resources_for_students')          ||
 3108: 	      ($print_type eq 'incomplete_problems_selpeople_course') ||
 3109: 	      ($print_type eq 'map_incomplete_problems_people_seq')){
 3110: 
 3111: 
 3112:      #-- prints assignments for whole class or for selected students  
 3113: 	 my $type;
 3114: 	 if (($print_type eq 'problems_for_students')           ||
 3115: 	     ($print_type eq 'problems_for_students_from_page') ||
 3116: 	     ($print_type eq 'all_problems_students')           ||
 3117: 	     ($print_type eq 'incomplete_problems_selpeople_course') ||
 3118: 	     ($print_type eq 'map_incomplete_problems_people_seq')) {
 3119: 	     $selectionmade=5;
 3120: 	     $type='problems';
 3121: 	 } elsif ($print_type eq 'resources_for_students') {
 3122: 	     $selectionmade=8;
 3123: 	     $type='resources';
 3124: 	 }
 3125: 	 my @students=split /\|\|\|/, $helper->{'VARS'}->{'STUDENTS'};
 3126: 	 #   The normal sort order is by section then by students within the
 3127: 	 #   section. If the helper var student_sort is 1, then the user has elected
 3128: 	 #   to override this and output the students by name.
 3129: 	 #    Each element of the students array is of the form:
 3130: 	 #       username:domain:section:last, first:status
 3131: 	 #    
 3132: 	 #  Note that student sort is not compatible with printing 
 3133: 	 #  1 section per pdf...so that setting overrides.
 3134: 	 #   
 3135: 	 if (($helper->{'VARS'}->{'student_sort'}    eq 1)  && 
 3136: 	     ($helper->{'VARS'}->{'SPLIT_PDFS'} ne "sections")) {
 3137: 	     @students = sort compare_names  @students;
 3138: 	 } else {
 3139: 	     @students = sort compare_sections @students; 
 3140: 	 }
 3141: 	 &adjust_number_to_print($helper);
 3142: 
 3143:          if ($helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq '0' ||
 3144: 	     $helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq 'all' ) {
 3145: 	     $helper->{'VARS'}->{'NUMBER_TO_PRINT'}=$#students+1;
 3146: 	 }
 3147: 	 # If we are splitting on section boundaries, we need 
 3148: 	 # to remember that in split_on_sections and 
 3149: 	 # print all of the students in the list.
 3150: 	 #
 3151: 	 my $split_on_sections = 0;
 3152: 	 if ($helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq 'section') {
 3153: 	     $split_on_sections = 1;
 3154: 	     $helper->{'VARS'}->{'NUMBER_TO_PRINT'} = $#students+1;
 3155: 	 }
 3156: 	 my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
 3157: 
 3158:          my $map;
 3159:          if ($helper->{VARS}->{'symb'}) {
 3160:              ($map, my $id, my $resource) =
 3161:                  &Apache::lonnet::decode_symb($helper->{VARS}->{'symb'});
 3162:          }
 3163: 
 3164: 	 #loop over students
 3165: 
 3166:  	 my $flag_latex_header_remove = 'NO';
 3167: 	 my %moreenv;
 3168:          $moreenv{'instructor_comments'}='hide';
 3169: 	 $moreenv{'textwidth'}=&get_textwidth($helper,$LaTeXwidth);
 3170: 	 $moreenv{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
 3171: 	 $moreenv{'print_annotations'} = $helper->{'VARS'}->{'PRINT_ANNOTATIONS'};
 3172: 	 $moreenv{'problem_split'}    = $parmhash{'problem_stream_switch'};
 3173: 	 $moreenv{'suppress_tries'}   = $parmhash{'suppress_tries'};
 3174: 	 if (($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes')  ||
 3175: 	     ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes')) {
 3176: 	     $moreenv{'problem_split'}='yes';
 3177: 	 }
 3178: 	 my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,$#students+1);
 3179: 	 my $student_counter=-1;
 3180: 	 my $i = 0;
 3181: 	 my $last_section = (split(/:/,$students[0]))[2];
 3182: 	 foreach my $person (@students) {
 3183:              my $duefile="/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
 3184: 	     if (-e $duefile) {
 3185: 		 my $temp_file = Apache::File->new('>>'.$duefile);
 3186: 		 print $temp_file "1969\n";
 3187: 	     }
 3188: 	     $student_counter++;
 3189: 	     if ($split_on_sections) {
 3190: 		 my $this_section = (split(/:/,$person))[2];
 3191: 		 if ($this_section ne $last_section) {
 3192: 		     $i++;
 3193: 		     $last_section = $this_section;
 3194: 		 }
 3195: 	     } else {
 3196: 		 $i=int($student_counter/$helper->{'VARS'}{'NUMBER_TO_PRINT'});
 3197: 	     }
 3198: 	     my $actual_seq = master_seq_to_person_seq($map, \@master_seq,
 3199:                                                        $person, undef, 1);
 3200: 	     my ($output,$fullname, $printed)=&print_resources($r,$helper,
 3201: 						     $person,$type,
 3202: 						     \%moreenv,  $actual_seq,
 3203: 						     $flag_latex_header_remove,
 3204: 						     $LaTeXwidth);
 3205: 	     $resources_printed .= ":";
 3206: 	     $print_array[$i].=$output;
 3207: 	     $student_names[$i].=$person.':'.$fullname.'_END_';
 3208: #	     &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,&mt('last student').' '.$fullname);
 3209: 	     &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
 3210: 	     $flag_latex_header_remove = 'YES';
 3211: 	     if (&Apache::loncommon::connection_aborted($r)) { last; }
 3212: 	 }
 3213: 	 &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
 3214: 	 $result .= $print_array[0].'  \end{document}';
 3215:      } elsif (($print_type eq 'problems_for_anon')      ||
 3216: 	      ($print_type eq 'problems_for_anon_page') ||
 3217: 	      ($print_type eq 'resources_for_anon')  ) { 
 3218: 	 my $cdom =$env{'course.'.$env{'request.course.id'}.'.domain'};
 3219: 	 my $cnum =$env{'course.'.$env{'request.course.id'}.'.num'};
 3220: 	 my $num_todo=$helper->{'VARS'}->{'NUMBER_TO_PRINT_TOTAL'};
 3221: 	 my $code_name=$helper->{'VARS'}->{'ANON_CODE_STORAGE_NAME'};
 3222: 	 my $old_name=$helper->{'VARS'}->{'REUSE_OLD_CODES'};
 3223: 	 my $single_code = $helper->{'VARS'}->{'SINGLE_CODE'};
 3224: 	 my $selected_code = $helper->{'VARS'}->{'CODE_SELECTED_FROM_LIST'};
 3225: 	 my $code_option=$helper->{'VARS'}->{'CODE_OPTION'};
 3226:          my @lines = &Apache::grades::get_scantronformat_file();
 3227: 	 my ($code_type,$code_length,$bubbles_per_row)=('letter',6,10);
 3228: 	 foreach my $line (@lines) {
 3229:              chomp($line);
 3230: 	     my ($name,$type,$length,$bubbles_per_item) = 
 3231:                  (split(/:/,$line))[0,2,4,17];
 3232: 	     if ($name eq $code_option) {
 3233: 		 $code_length=$length;
 3234: 		 if ($type eq 'number') { $code_type = 'number'; }
 3235:                  chomp($bubbles_per_item); 
 3236:                  if (($bubbles_per_item ne '') && ($bubbles_per_item > 0)) {
 3237:                      $bubbles_per_row = $bubbles_per_item; 
 3238:                  }
 3239: 	     }
 3240: 	 }
 3241:          my ($randomorder,$randompick,$map);
 3242:          if ($helper->{VARS}{'symb'}) {
 3243:              ($map, my $id, my $resource) =
 3244:                  &Apache::lonnet::decode_symb($helper->{VARS}{'symb'});
 3245:              my $navmap = Apache::lonnavmaps::navmap->new();
 3246:              if (defined($navmap)) {
 3247:                  if ($map) {
 3248:                      my $mapres = $navmap->getResourceByUrl($map);
 3249:                      $randomorder = $mapres->randomorder();
 3250:                      $randompick = $mapres->randompick();
 3251:                  }
 3252:              }
 3253:          }
 3254: 	 my %moreenv = ('textwidth' => &get_textwidth($helper,$LaTeXwidth));
 3255: 	 $moreenv{'problem_split'}    = $parmhash{'problem_stream_switch'};
 3256:          $moreenv{'instructor_comments'}='hide';
 3257:          $moreenv{'bubbles_per_row'} = $bubbles_per_row;
 3258: 	 my $seed=time+($$<<16)+($$);
 3259: 	 my @allcodes;
 3260: 	 if ($old_name) {
 3261: 	     my %result=&Apache::lonnet::get('CODEs',
 3262: 					     [$old_name,"type\0$old_name"],
 3263: 					     $cdom,$cnum);
 3264: 	     $code_type=$result{"type\0$old_name"};
 3265: 	     @allcodes=split(',',$result{$old_name});
 3266: 	     $num_todo=scalar(@allcodes);
 3267: 	 } elsif ($selected_code) { # Selection value is always numeric.
 3268: 	     $num_todo = 1;
 3269: 	     @allcodes = ($selected_code);
 3270: 	 } elsif ($single_code) {
 3271: 
 3272: 	     $num_todo    = 1;	# Unconditionally one code to do.
 3273: 	     # If an alpha code have to convert to numbers so it can be
 3274: 	     # converted back to letters again :-)
 3275: 	     #
 3276: 	     if ($code_type ne 'number') {
 3277: 		 $single_code = &letters_to_num($single_code);
 3278: 	     }
 3279: 	     @allcodes = ($single_code);
 3280: 	 } else {
 3281: 	     my %allcodes;
 3282: 	     srand($seed);
 3283: 	     for (my $i=0;$i<$num_todo;$i++) {
 3284: 		 $moreenv{'CODE'}=&get_CODE(\%allcodes,$i,$seed,$code_length,
 3285: 					    $code_type);
 3286: 	     }
 3287: 	     if ($code_name) {
 3288: 		 &Apache::lonnet::put('CODEs',
 3289: 				      {
 3290: 					$code_name =>join(',',keys(%allcodes)),
 3291: 					"type\0$code_name" => $code_type
 3292: 				      },
 3293: 				      $cdom,$cnum);
 3294: 	     }
 3295: 	     @allcodes=keys(%allcodes);
 3296: 	 }
 3297: 	 my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
 3298: 	 my ($type) = split(/_/,$print_type);
 3299: 	 &adjust_number_to_print($helper);
 3300: 	 my $number_per_page=$helper->{'VARS'}->{'NUMBER_TO_PRINT'};
 3301: 	 if ($number_per_page eq '0' || $number_per_page eq 'all'
 3302: 	     || $number_per_page eq 'section') {
 3303: 	     $number_per_page=$num_todo > 0 ? $num_todo : 1;
 3304: 	 }
 3305: 	 my $flag_latex_header_remove = 'NO'; 
 3306: 	 my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,$num_todo);
 3307: 	 my $count=0;
 3308: 	 foreach my $code (sort(@allcodes)) {
 3309: 	     my $file_num=int($count/$number_per_page);
 3310: 	     if ($code_type eq 'number') { 
 3311: 		 $moreenv{'CODE'}=$code;
 3312: 	     } else {
 3313: 		 $moreenv{'CODE'}=&num_to_letters($code);
 3314: 	     }
 3315:              my $actual_seq = \@master_seq;
 3316:              if ($randomorder || $randompick) {
 3317:                  $env{'form.CODE'} = $moreenv{'CODE'};
 3318:                  $actual_seq = master_seq_to_person_seq($map, \@master_seq,
 3319:                                                         undef,
 3320:                                                         $moreenv{'CODE'}, 1);
 3321:                  delete($env{'form.CODE'});
 3322:              }
 3323: 	     my ($output,$fullname, $printed)=
 3324: 		 &print_resources($r,$helper,'anonymous',$type,\%moreenv,
 3325: 				  $actual_seq,$flag_latex_header_remove,
 3326: 				  $LaTeXwidth);
 3327: 	     $resources_printed .= ":";
 3328: 	     $print_array[$file_num].=$output;
 3329: 	     &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
 3330: 				       &mt('last assignment').' '.$fullname);
 3331: 	     $flag_latex_header_remove = 'YES';
 3332: 	     $count++;
 3333: 	     if (&Apache::loncommon::connection_aborted($r)) { last; }
 3334: 	 }
 3335: 	 &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
 3336: 	 $result .= $print_array[0].'  \end{document}';
 3337:      } elsif ($print_type eq 'problems_from_directory') {      
 3338:     #prints selected problems from the subdirectory 
 3339: 	$selectionmade = 6;
 3340:         my @list_of_files=split /\|\|\|/, $helper->{'VARS'}->{'FILES'};
 3341: 	@list_of_files=sort @list_of_files;
 3342: 	my $flag_latex_header_remove = 'NO'; 
 3343: 	my $rndseed=time;
 3344: 	if ($helper->{'VARS'}->{'curseed'}) {
 3345: 	    $rndseed=$helper->{'VARS'}->{'curseed'};
 3346: 	}
 3347: 	for (my $i=0;$i<=$#list_of_files;$i++) {
 3348: 
 3349: 	    &Apache::lonenc::reset_enc();
 3350: 
 3351: 	    my $urlp = $list_of_files[$i];
 3352: 	    $urlp=~s|//|/|;
 3353: 	    if ($urlp=~/\//) {
 3354: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 3355: 		$form{'rndseed'}=$rndseed;
 3356: 		$urlp =~ s|^$Apache::lonnet::perlvar{'lonDocRoot'}||;
 3357: 		$resources_printed .= $urlp.':';
 3358: 		my $texversion=&ssi_with_retries($urlp, $ssi_retry_count, %form);
 3359: 		if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 3360: 		   ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 3361: 		    #  Don't permanently pervert %form:
 3362: 		    my %answerform = %form;
 3363: 		    $answerform{'grade_target'}='answer';
 3364: 		    $answerform{'answer_output_mode'}='tex';
 3365: 		    $answerform{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 3366: 		    $answerform{'rndseed'}=$rndseed;
 3367: 		    $resources_printed .= $urlp.':';
 3368: 		    my $answer=&ssi_with_retries($urlp, $ssi_retry_count, %answerform);
 3369: 		    if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 3370: 			$texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
 3371: 		    } else {
 3372: 			$texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 3373: 			if ($helper->{'VARS'}->{'construction'} ne '1') {
 3374: 			    $texversion.='\vskip 0 mm \noindent ';
 3375: 			    $texversion.=&path_to_problem ($urlp,$LaTeXwidth);
 3376: 			} else {
 3377: 			    $texversion.='\vskip 0 mm \noindent\textbf{'.
 3378:                                          &mt("Printing from Authoring Space: No Title").'}\vskip 0 mm ';
 3379: 			    $texversion.=&path_to_problem ($urlp,$LaTeXwidth);
 3380: 			}
 3381: 			$texversion.='\vskip 1 mm '.$answer.'\end{document}';
 3382: 		    }
 3383: 		}
 3384:                 #this chunk is responsible for printing the path to problem
 3385: 
 3386: 		my $newurlp=&path_to_problem($urlp,$LaTeXwidth);
 3387: 		$texversion =~ s/(\\begin{minipage}{\\textwidth})/$1 $newurlp/;
 3388: 		if ($flag_latex_header_remove ne 'NO') {
 3389: 		    $texversion = &latex_header_footer_remove($texversion);
 3390: 		} else {
 3391: 		    $texversion =~ s/\\end{document}//;
 3392: 		}
 3393: 		if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 3394: 		    $texversion=&IndexCreation($texversion,$urlp);
 3395: 		}
 3396: 		if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
 3397: 		    $texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$urlp| \\strut\\\\\\strut /;
 3398: 		    
 3399: 		}
 3400: 		$result .= $texversion;
 3401: 	    }
 3402: 	    $flag_latex_header_remove = 'YES';  
 3403: 	}
 3404: 	if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\typeout)/ RANDOM SEED IS $rndseed $1/;}
 3405: 	$result .= '\end{document}';      	
 3406:     }
 3407: #-------------------------------------------------------- corrections for the different page formats
 3408: 
 3409:     # Only post process if that has not been turned off e.g. by a raw latex resource.
 3410: 
 3411:     if ($do_postprocessing) {
 3412: 	$result = &page_format_transformation($papersize,
 3413: 					      $laystyle,$numberofcolumns,
 3414: 					      $print_type,$result,
 3415: 					      $helper->{VARS}->{'assignment'},
 3416: 					      $helper->{'VARS'}->{'TABLE_CONTENTS'},
 3417: 					      $helper->{'VARS'}->{'TABLE_INDEX'},
 3418: 					      $selectionmade);
 3419: 	$result = &latex_corrections($number_of_columns,$result,$selectionmade,
 3420: 				     $helper->{'VARS'}->{'ANSWER_TYPE'});
 3421: 	#if ($numberofcolumns == 1) {
 3422: 	$result =~ s/\\textwidth\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\textwidth= $helper->{'VARS'}->{'pagesize.width'} $helper->{'VARS'}->{'pagesize.widthunit'} /;
 3423: 	$result =~ s/\\textheight\s*=?\s*-?\d*\.?\d*\s*(cm|mm|in)/\\textheight $helper->{'VARS'}->{'pagesize.height'} $helper->{'VARS'}->{'pagesize.heightunit'} /;
 3424: 	$result =~ s/\\evensidemargin\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\evensidemargin= $helper->{'VARS'}->{'pagesize.lmargin'} $helper->{'VARS'}->{'pagesize.lmarginunit'} /;
 3425: 	$result =~ s/\\oddsidemargin\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\oddsidemargin= $helper->{'VARS'}->{'pagesize.lmargin'} $helper->{'VARS'}->{'pagesize.lmarginunit'} /;
 3426: 	#}
 3427:     }
 3428: 
 3429:     # Set URLback if this is a construction space print so we can provide
 3430:     # a link to the resource being edited.
 3431:     #
 3432: 
 3433:     my $URLback=''; #link to original document
 3434:     if ($helper->{'VARS'}->{'construction'} eq '1') {
 3435: 	$URLback=$helper->{'VARS'}->{'filename'};
 3436:     }
 3437:     #
 3438:     # Final adjustment of the font size:
 3439:     #
 3440: 
 3441:     $result = set_font_size($result);
 3442: 
 3443:     # Insert any babel headers required.
 3444: 
 3445:     $result       = &collect_languages($result);
 3446: 
 3447: 
 3448: #-- writing .tex file in prtspool 
 3449:     my $temp_file;
 3450:     my $identifier = &Apache::loncommon::get_cgi_id();
 3451:     my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout_$identifier.tex";
 3452:     if (!($#print_array>0)) { 
 3453:        unless ($temp_file = Apache::File->new('>'.$filename)) {
 3454: 	  $r->log_error("Couldn't open $filename for output $!");
 3455: 	  return SERVER_ERROR; 
 3456:        }
 3457:        print $temp_file $result;
 3458:        my $begin=index($result,'\begin{document}',0);
 3459:        my $inc=substr($result,0,$begin+16); 
 3460:     } else {
 3461:        my $begin=index($result,'\begin{document}',0);
 3462:        my $inc=substr($result,0,$begin+16);
 3463:        for (my $i=0;$i<=$#print_array;$i++) {
 3464: 	  if ($i==0) {
 3465: 	      $print_array[$i]=$result;
 3466: 	  } else {
 3467: 	      $print_array[$i].='\end{document}';
 3468: 	      $print_array[$i] = 
 3469: 		&latex_corrections($number_of_columns,$print_array[$i],
 3470: 				   $selectionmade, 
 3471: 				   $helper->{'VARS'}->{'ANSWER_TYPE'});
 3472: 	    
 3473: 	      my $anobegin=index($print_array[$i],'\setcounter{page}',0);
 3474: 	      substr($print_array[$i],0,$anobegin)='';
 3475: 	      $print_array[$i]=$inc.$print_array[$i];
 3476: 	  }
 3477: 	  my $temp_file;
 3478: 	  my $newfilename=$filename;
 3479: 	  my $num=$i+1;
 3480: 	  $newfilename =~s/\.tex$//; 
 3481: 	  $newfilename=sprintf("%s_%03d.tex",$newfilename, $num);
 3482: 	  unless ($temp_file = Apache::File->new('>'.$newfilename)) {
 3483: 	      $r->log_error("Couldn't open $newfilename for output $!");
 3484: 	      return SERVER_ERROR; 
 3485: 	  }
 3486: 	  print $temp_file $print_array[$i];
 3487:        }
 3488:     }
 3489:     my $student_names='';
 3490:     if ($#print_array>0) {
 3491:         for (my $i=0;$i<=$#print_array;$i++) {
 3492:   	  $student_names.=$student_names[$i].'_ENDPERSON_';
 3493: 	}
 3494:     } else {
 3495: 	if ($#student_names>-1) {
 3496: 	   $student_names=$student_names[0].'_ENDPERSON_';
 3497: 	} else {
 3498:            my $fullname = &get_name($env{'user.name'},$env{'user.domain'});
 3499: 	   $student_names=join(':',$env{'user.name'},$env{'user.domain'},
 3500: 				    $env{'request.course.sec'},$fullname).
 3501: 					'_ENDPERSON_'.'_END_';
 3502: 	}
 3503:      }
 3504: 	
 3505:      # logic for now is too complex to trace if this has been defined
 3506:      #  yet.
 3507:      my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 3508:      my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 3509:      &Apache::lonnet::appenv({'cgi.'.$identifier.'.file'   => $filename,
 3510: 				'cgi.'.$identifier.'.layout'  => $laystyle,
 3511: 				'cgi.'.$identifier.'.numcol'  => $numberofcolumns,
 3512: 				'cgi.'.$identifier.'.paper'  => $papersize,
 3513: 				'cgi.'.$identifier.'.selection' => $selectionmade,
 3514: 				'cgi.'.$identifier.'.tableofcontents' => $helper->{'VARS'}->{'TABLE_CONTENTS'},
 3515: 				'cgi.'.$identifier.'.tableofindex' => $helper->{'VARS'}->{'TABLE_INDEX'},
 3516: 				'cgi.'.$identifier.'.role' => $perm{'pav'},
 3517: 				'cgi.'.$identifier.'.numberoffiles' => $#print_array,
 3518: 				'cgi.'.$identifier.'.studentnames' => $student_names,
 3519: 				'cgi.'.$identifier.'.backref' => $URLback,});
 3520:     &Apache::lonnet::appenv({"cgi.$identifier.user"    => $env{'user.name'},
 3521: 				"cgi.$identifier.domain"  => $env{'user.domain'},
 3522: 				"cgi.$identifier.courseid" => $cnum, 
 3523: 				"cgi.$identifier.coursedom" => $cdom, 
 3524: 				"cgi.$identifier.resources" => $resources_printed});
 3525: 	
 3526:     my $end_page = &Apache::loncommon::end_page();
 3527:     my $continue_text = &mt('Continue');
 3528:     # If there's been an unrecoverable SSI error, report it to the user
 3529:     if ($ssi_error) {
 3530:         my $helpurl = &Apache::loncommon::top_nav_help('Helpdesk');
 3531:         $r->print('<br /><p class="LC_error">'.&mt('An unrecoverable network error occurred:').'</p><p>'.
 3532:                   &mt('At least one of the resources you chose to print could not be rendered due to an unrecoverable error when communicating with a server:').
 3533:                   '<br />'.$ssi_last_error_resource.'<br />'.$ssi_last_error.
 3534:                   '</p><p>'.&mt('You can continue using the link provided below, but make sure to carefully inspect your output file! The errors will be marked in the file.').'<br />'.
 3535:                   &mt('You may be able to reprint the individual resources for which this error occurred, as the issue may be temporary.').
 3536:                   '<br />'.&mt('If the error persists, please contact the [_1] for assistance.',$helpurl).'</p><p>'.
 3537:                   &mt('We apologize for the inconvenience.').'</p>'.
 3538:                   '<a href="/cgi-bin/printout.pl?'.$identifier.'">'.$continue_text.'</a>'.$end_page);
 3539:     } else {
 3540: 	$r->print(<<FINALEND);
 3541: <br />
 3542: <meta http-equiv="Refresh" content="0; url=/cgi-bin/printout.pl?$identifier" />
 3543: <a href="/cgi-bin/printout.pl?$identifier">$continue_text</a>
 3544: $end_page
 3545: FINALEND
 3546:     }                                     # endif ssi errors.
 3547: }
 3548: 
 3549: 
 3550: sub get_CODE {
 3551:     my ($all_codes,$num,$seed,$size,$type)=@_;
 3552:     my $max='1'.'0'x$size;
 3553:     my $newcode;
 3554:     while(1) {
 3555: 	$newcode=sprintf("%0".$size."d",int(rand($max)));
 3556: 	if (!exists($$all_codes{$newcode})) {
 3557: 	    $$all_codes{$newcode}=1;
 3558: 	    if ($type eq 'number' ) {
 3559: 		return $newcode;
 3560: 	    } else {
 3561: 		return &num_to_letters($newcode);
 3562: 	    }
 3563: 	}
 3564:     }
 3565: }
 3566: 
 3567: sub print_resources {
 3568:     my ($r,$helper,$person,$type,$moreenv,$master_seq,$remove_latex_header,
 3569: 	$LaTeXwidth)=@_;
 3570:     my $current_output = ''; 
 3571:     my $printed = '';
 3572:     my ($username,$userdomain,$usersection) = split /:/,$person;
 3573:     my $fullname = &get_name($username,$userdomain);
 3574:     my $namepostfix = "\\\\";	# Both anon and not anon should get the same vspace.
 3575: 
 3576: 
 3577:     #
 3578:     # Figure out if we need to filter the output by
 3579:     # the incomplete problems for that person
 3580:     #
 3581:     my $print_type = $helper->{'VARS'}->{'PRINT_TYPE'};
 3582:     my $print_incomplete = 0;
 3583:     if (($print_type eq 'map_incomplete_problems_people_seq')   ||
 3584: 	($print_type eq 'incomplete_problems_selpeople_course')) {
 3585: 	$print_incomplete = 1;
 3586:     }
 3587:     if ($person eq 'anonymous') {
 3588: 	$namepostfix .=&mt('Name:')." ";
 3589: 	$fullname = "CODE - ".$moreenv->{'CODE'};
 3590:     }
 3591: 
 3592:     #  Fullname may have special latex characters that need \ prefixing:
 3593:     #
 3594: 
 3595:     my $i           = 0;
 3596:     my $actually_printed = 0;	# Count of resources printed.
 3597:     #goes through all resources, checks if they are available for 
 3598:     #current student, and produces output   
 3599: 
 3600:     &Apache::lonxml::clear_problem_counter();
 3601:     my %page_breaks  = &get_page_breaks($helper);
 3602:     my $columns_in_format = (split(/\|/,$helper->{'VARS'}->{'FORMAT'}))[1];
 3603:     #
 3604:     #   end each student with a 
 3605:     #   Special that allows the post processor to even out the page
 3606:     #   counts later.  Nasty problem this... it would be really
 3607:     #   nice to put the special in as a postscript comment
 3608:     #   e.g. \special{ps:\ENDOFSTUDENTSTAMP}  unfortunately,
 3609:     #   The special gets passed the \ and dvips puts it in the output file
 3610:     #   so we will just rely on prntout.pl to strip  ENDOFSTUDENTSTAMP from the
 3611:     #   postscript.  Each ENDOFSTUDENTSTAMP will go on a line by itself.
 3612:     #
 3613: 
 3614:     my $syllabus_first = 0;
 3615:     my $current_assignment = "";
 3616:     my $assignment;
 3617:     my $courseidinfo = &get_course();
 3618:     my $possprint = scalar(@{$master_seq});
 3619: 
 3620:     foreach my $curresline (@{$master_seq})  {
 3621: 	if (defined $page_breaks{$curresline}) {
 3622: 	    if($i != 0) {
 3623: 		$current_output.= "\\newpage\n";
 3624: 	    }
 3625: 	}
 3626: 	$current_output .= &get_extra_vspaces($helper, $curresline);
 3627: 	$i++;
 3628: 	my ($map,$id,$res_url) = &Apache::lonnet::decode_symb($curresline);
 3629: 
 3630: 	# See if we need to emit a new header:
 3631: 
 3632: 	if ( !($type eq 'problems' && 
 3633: 	       ($curresline!~ m/$LONCAPA::assess_page_re/)) ) {
 3634: 	    if ($print_incomplete && !&incomplete($username, $userdomain, $res_url)) {
 3635: 		next;
 3636: 	    }
 3637: 	    $actually_printed++; # we're going to print one.
 3638: 
 3639: 	    if (&Apache::lonnet::allowed('bre',$res_url)) {
 3640: 		if ($res_url!~m|^ext/|
 3641: 		    && $res_url=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
 3642: 		    $printed .= $curresline.':';
 3643: 		    &Apache::lonxml::remember_problem_counter();    
 3644: 
 3645: 		    my $rendered = &get_student_view_with_retries($curresline,$ssi_retry_count,$username,$userdomain,$env{'request.course.id'},'tex',$moreenv);
 3646:                     if ($res_url =~ /\.page$/) {
 3647:                         if ($remove_latex_header eq 'NO') {
 3648:                             if (!($rendered =~ /\\begin\{document\}/)) {
 3649:                                 $rendered = &print_latex_header().$rendered;
 3650:                             }
 3651:                         }
 3652: ;
 3653:                         if ($remove_latex_header eq 'YES') {
 3654:                             $rendered = &latex_header_footer_remove($rendered);
 3655:                         } else {
 3656:                             $rendered =~ s/\\end{document}\d*//;
 3657:                         }
 3658:                     }
 3659: 		    if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 3660: 		       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 3661: 			#   Use a copy of the hash so we don't pervert it on future loop passes.
 3662: 			my %answerenv = %{$moreenv};
 3663: 			$answerenv{'answer_output_mode'}='tex';
 3664: 
 3665: 
 3666: 			$answerenv{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 3667: 			
 3668: 			&Apache::lonxml::restore_problem_counter();
 3669: 
 3670: 			my $ansrendered = &Apache::loncommon::get_student_answers($curresline,$username,$userdomain,$env{'request.course.id'},%answerenv);
 3671: 
 3672: 			if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 3673: 			    $rendered=~s/(\\keephidden{ENDOFPROBLEM})/$ansrendered$1/;
 3674: 			} else {
 3675: 
 3676: 			    
 3677: 			    my $header =&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 3678:                             unless ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only') {
 3679:                                 $header =~ s/\\begin{document}//;     #<<<<<
 3680:                             }
 3681: 			    my $title = &Apache::lonnet::gettitle($curresline);
 3682: 			    $title = &Apache::lonxml::latex_special_symbols($title);
 3683: 			    my $body   ='\vskip 0 mm \noindent\textbf{'.$title.'}\vskip 0 mm ';
 3684: 			    $body     .=&path_to_problem($res_url,$LaTeXwidth);
 3685: 			    $body     .='\vskip 1 mm '.$ansrendered;
 3686: 			    $body     = &encapsulate_minipage($body);
 3687: 			    $rendered = $header.$body;
 3688: 			}
 3689: 		    }
 3690: 		    if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 3691: 			my $url = &Apache::lonnet::clutter($res_url);
 3692: 			my $annotation = &annotate($url);
 3693: 			$rendered =~  s/(\\keephidden{ENDOFPROBLEM})/$annotation$1/;
 3694: 		    }
 3695: 		    my $junk;
 3696: 		    if ($remove_latex_header eq 'YES') {
 3697: 			$rendered = &latex_header_footer_remove($rendered);
 3698: 		    } else {
 3699: 			$rendered =~ s/\\end{document}//;
 3700: 		    }
 3701: 		    $current_output .= $rendered;		    
 3702: 		} elsif ($res_url=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) {
 3703: 		    if ($i == 1) {
 3704: 			$syllabus_first = 1;
 3705: 		    }
 3706: 		    $printed .= $curresline.':';
 3707: 		    my $rendered = &get_student_view_with_retries($curresline,$ssi_retry_count,$username,$userdomain,$env{'request.course.id'},'tex',$moreenv);
 3708: 		    if ($helper->{'VARS'}->{'PRINT_ANNOTATIONS'} eq 'yes') {
 3709: 			my $url = &Apache::lonnet::clutter($res_url);
 3710: 			my $annotation = &annotate($url);
 3711: 			$annotation    =~ s/(\\end{document})/$annotation$1/;
 3712: 		    }
 3713: 		    if ($remove_latex_header eq 'YES') {
 3714: 			$rendered = &latex_header_footer_remove($rendered);
 3715: 		    } else {
 3716: 			$rendered =~ s/\\end{document}//;
 3717: 		    }
 3718: 		    $current_output .= $rendered.'\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\strut \vskip 0 mm \strut ';
 3719: 		} elsif($res_url = ~/\.pdf$/) {
 3720: 		    my $url = &Apache::lonnet::clutter($res_url);
 3721: 		    my $rendered  = &include_pdf($url);
 3722: 		    if ($remove_latex_header ne 'NO') {
 3723: 			$rendered = &latex_header_footer_remove($rendered);
 3724: 		    }
 3725: 		    $current_output .= $rendered;
 3726: 		} else {
 3727: 		    my $rendered = &unsupported($res_url,$helper->{'VARS'}->{'LATEX_TYPE'},$curresline);
 3728: 		    if ($remove_latex_header ne 'NO') {
 3729: 			$rendered = &latex_header_footer_remove($rendered);
 3730: 		    } else {
 3731: 			$rendered =~ s/\\end{document}//;
 3732: 		    }
 3733: 		    $current_output .= $rendered;
 3734: 		}
 3735: 	    }
 3736: 	    $remove_latex_header = 'YES';
 3737: 	}
 3738: 	$assignment = &Apache::lonxml::latex_special_symbols(
 3739: 	    &Apache::lonnet::gettitle($map), 'header');
 3740: 	if (($assignment ne $current_assignment) && ($assignment ne "")) {
 3741: 	    my $header_line = &format_page_header($LaTeXwidth, $parmhash{'print_header_format'},
 3742: 						  $assignment, $courseidinfo, 
 3743: 						  $fullname, $usersection);
 3744: 	    my $header_start = ($columns_in_format == 1) ? '\lhead'
 3745: 		: '\fancyhead[LO]';
 3746: 	    $header_line = $header_start.'{'.$header_line.'}';
 3747: 	    $current_output = $current_output . $header_line;
 3748: 	    $current_assignment = $assignment;
 3749: 	}
 3750: 
 3751: 	if (&Apache::loncommon::connection_aborted($r)) { last; }
 3752:     }
 3753:     # If we are printing incomplete it's possible we don't have
 3754:     # anything to print.  The print subsystem is not so good at handling
 3755:     # that so we're going to generate a stub that says there are no
 3756:     # incomplete resources for the person.
 3757:     #
 3758: 
 3759:     if ($actually_printed == 0) {
 3760:         my $message = &mt('No resources to print');
 3761:         if (!$possprint) {
 3762:             if ($perm{'pav'} || $perm{'pfo'}) {
 3763:                 $message = &mt('There are no unhidden resources to print.')."\n\n".
 3764:                            &mt('The most likely reason is one of the following: ')."\n".
 3765:                            '\begin{itemize}'."\n".
 3766:                            '\item '.&mt("The 'Resource hidden from students' parameter is set for the folder being printed.")."\n".
 3767:                            '\item '.&mt("'Hidden' is checked in the Course Editor individually for each resource in the folder being printed.")."\n".
 3768:                            '\end{itemize}'."\n\n".
 3769:                            &mt("Note: to print a bubblesheet exam which you want to hide from students, ".
 3770:                                "use the Course Editor to check the 'Hidden' checkbox for the exam folder itself.")."\n";
 3771:             }
 3772:         } elsif ($print_incomplete) {
 3773:             $message = &mt('No incomplete resources');
 3774:         }
 3775:         if ($message) { 
 3776: 	    $current_output  = &encapsulate_minipage("\\vskip -10mm \n$message\n \\vskip 100 mm { }\n");
 3777:         }
 3778: 	if ($remove_latex_header eq "NO") {
 3779: 	    $current_output = &print_latex_header() . $current_output;
 3780: 	} else {
 3781: 	    $current_output = &latex_header_footer_remove($current_output);
 3782: 	}
 3783:     }
 3784: 
 3785:     if ($syllabus_first) {
 3786:         $current_output =~ s/\\\\ Last updated:/Last updated:/
 3787:     }
 3788:     my $currentassignment=&Apache::lonxml::latex_special_symbols($helper->{VARS}->{'assignment'},'header');
 3789:     my $header_line =
 3790:     &format_page_header($LaTeXwidth, $parmhash{'print_header_format'},
 3791:                         $currentassignment, $courseidinfo, $fullname, $usersection);
 3792:     my $header_start = ($columns_in_format == 1) ? '\lhead' : '\fancyhead[LO]';
 3793:     my $newheader = $header_start.'{'.$header_line.'}';
 3794:     if ($current_output=~/\\documentclass/) {
 3795: 	$current_output =~ s/\\begin{document}/\\setlength{\\topmargin}{1cm} \\begin{document}\\noindent\\parbox{\\minipagewidth}{\\noindent$newheader$namepostfix}\\vskip 5 mm /;
 3796: 
 3797:     } else {
 3798: 	my $blankpages = 
 3799: 	    '\clearpage\strut\clearpage'x$helper->{'VARS'}->{'EMPTY_PAGES'};
 3800: 	
 3801: 	$current_output = '\strut\vspace*{-6 mm}\\newline'.
 3802: 	    &copyright_line().' \newpage '.$blankpages.$end_of_student.
 3803: 	    '\setcounter{page}{1}\noindent\parbox{\minipagewidth}{\noindent'.
 3804: 	    $newheader.$namepostfix. '} \vskip 5 mm '.$current_output;
 3805: 
 3806:     }
 3807:     #
 3808:     #  Close the student bracketing.
 3809:     #
 3810:     return ($current_output,$fullname, $printed);
 3811: 
 3812: }
 3813: 
 3814: sub printing_blocked {
 3815:     my ($r,$blocktext) = @_;
 3816:     my $title = &mt('Preparing Printout');
 3817:     &Apache::lonhtmlcommon::clear_breadcrumbs();
 3818:     &Apache::lonhtmlcommon::add_breadcrumb({href=>'/adm/printout',
 3819:                                             text=> $title});
 3820:     my $breadcrumbs = &Apache::lonhtmlcommon::breadcrumbs($title);
 3821:     &Apache::loncommon::content_type($r,'text/html');
 3822:     &Apache::loncommon::no_cache($r);
 3823:     $r->send_http_header;
 3824:     $r->print(&Apache::loncommon::start_page('Preparing Printout').
 3825:               $breadcrumbs.
 3826:               $blocktext.
 3827:               &Apache::loncommon::end_page());
 3828:     return;
 3829: }
 3830: 
 3831: sub handler {
 3832: 
 3833:     my $r = shift;
 3834: 
 3835:     if ($env{'request.course.id'}) {
 3836:         my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 3837:         my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 3838:         my ($blocked,$blocktext) = 
 3839:             &Apache::loncommon::blocking_status('printout',$cnum,$cdom);
 3840:         if ($blocked) {
 3841:             my $checkrole = "cm./$cdom/$cnum";
 3842:             if ($env{'request.course.sec'} ne '') {
 3843:                 $checkrole .= "/$env{'request.course.sec'}";
 3844:             }
 3845:             unless ((&Apache::lonnet::allowed('evb',undef,undef,$checkrole)) && 
 3846:                     ($env{'request.role'} !~ m{^st\./$cdom/$cnum})) {
 3847:                 &printing_blocked($r,$blocktext);
 3848:                 return OK;
 3849:             }
 3850:         }
 3851:     }
 3852:     
 3853:     &init_perm();
 3854:     my $helper = printHelper($r);
 3855:     if (!ref($helper)) {
 3856: 	return $helper;
 3857:     }
 3858:    
 3859: 
 3860:     %parmhash=&Apache::lonnet::coursedescription($env{'request.course.id'});
 3861:  
 3862: 
 3863: 
 3864: 
 3865:     #  If a figure conversion queue file exists for this user.domain
 3866:     # we delete it since it can only be bad (if it were good, printout.pl
 3867:     # would have deleted it the last time around.
 3868: 
 3869:     my $conversion_queuefile = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
 3870:     if(-e $conversion_queuefile) {
 3871: 	unlink $conversion_queuefile;
 3872:     }
 3873:     
 3874: 
 3875:     &output_data($r,$helper,\%parmhash);
 3876:     return OK;
 3877: }
 3878: 
 3879: use Apache::lonhelper;
 3880: 
 3881: sub addMessage {
 3882:     my $text = shift;
 3883:     my $paramHash = Apache::lonhelper::getParamHash();
 3884:     $paramHash->{MESSAGE_TEXT} = $text;
 3885:     Apache::lonhelper::message->new();
 3886: }
 3887: 
 3888: 
 3889: 
 3890: sub init_perm {
 3891:     undef(%perm);
 3892:     $perm{'pav'}=&Apache::lonnet::allowed('pav',$env{'request.course.id'});
 3893:     if (!$perm{'pav'}) {
 3894: 	$perm{'pav'}=&Apache::lonnet::allowed('pav',
 3895: 		  $env{'request.course.id'}.'/'.$env{'request.course.sec'});
 3896:     }
 3897:     $perm{'pfo'}=&Apache::lonnet::allowed('pfo',$env{'request.course.id'});
 3898:     if (!$perm{'pfo'}) {
 3899: 	$perm{'pfo'}=&Apache::lonnet::allowed('pfo',
 3900: 		  $env{'request.course.id'}.'/'.$env{'request.course.sec'});
 3901:     }
 3902:     $perm{'vgr'}=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
 3903:     if (!$perm{'vgr'}) {
 3904:         $perm{'vgr'}=&Apache::lonnet::allowed('vgr',
 3905:                    $env{'request.course.id'}.'/'.$env{'request.course.sec'});
 3906:     }
 3907: }
 3908: 
 3909: sub get_randomly_ordered_warning {
 3910:     my ($helper,$map) = @_;
 3911: 
 3912:     my $message;
 3913: 
 3914:     my $postdata = $env{'form.postdata'} || $helper->{VARS}{'postdata'};
 3915:     my $navmap = Apache::lonnavmaps::navmap->new();
 3916:     if (defined($navmap)) {
 3917:         my $res = $navmap->getResourceByUrl($map);
 3918:         if ($res) {
 3919: 	    my $func = 
 3920: 	        sub { return ($_[0]->is_map() && $_[0]->randomorder); };
 3921: 	    my @matches = $navmap->retrieveResources($res, $func,1,1,1);
 3922: 
 3923:         }
 3924:     } else {
 3925:         $message = "Retrieval of information about ordering of resources failed."; 
 3926:         return '<message type="warning">'.$message.'</message>';
 3927:     }
 3928:     return;
 3929: }
 3930: 
 3931: sub printHelper {
 3932:     my $r = shift;
 3933: 
 3934:     if ($r->header_only) {
 3935:         if ($env{'browser.mathml'}) {
 3936:             &Apache::loncommon::content_type($r,'text/xml');
 3937:         } else {
 3938:             &Apache::loncommon::content_type($r,'text/html');
 3939:         }
 3940:         $r->send_http_header;
 3941:         return OK;
 3942:     }
 3943: 
 3944:     # Send header, nocache
 3945:     if ($env{'browser.mathml'}) {
 3946:         &Apache::loncommon::content_type($r,'text/xml');
 3947:     } else {
 3948:         &Apache::loncommon::content_type($r,'text/html');
 3949:     }
 3950:     &Apache::loncommon::no_cache($r);
 3951:     $r->send_http_header;
 3952:     $r->rflush();
 3953: 
 3954:     # Unfortunately, this helper is so complicated we have to
 3955:     # write it by hand
 3956: 
 3957:     Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING});
 3958:     
 3959:     my $helper = Apache::lonhelper::helper->new("Printing Helper");
 3960:     $helper->declareVar('symb');
 3961:     $helper->declareVar('postdata');    
 3962:     $helper->declareVar('curseed'); 
 3963:     $helper->declareVar('probstatus');   
 3964:     $helper->declareVar('filename');
 3965:     $helper->declareVar('construction');
 3966:     $helper->declareVar('assignment');
 3967:     $helper->declareVar('style_file');
 3968:     $helper->declareVar('student_sort');
 3969:     $helper->declareVar('FINISHPAGE');
 3970:     $helper->declareVar('PRINT_TYPE');
 3971:     $helper->declareVar("showallfoils");
 3972:     $helper->declareVar("STUDENTS");
 3973:     $helper->declareVar("EXTRASPACE");
 3974: 
 3975:    
 3976: 
 3977: 
 3978:     #  The page breaks and extra spaces
 3979:     #  can get loaded initially from the course environment:
 3980:     # But we only do this in the initial state so that they are allowed to change.
 3981:     #
 3982: 
 3983:     
 3984:     &Apache::loncommon::restore_course_settings('print',
 3985: 						{'pagebreaks'  => 'scalar',
 3986: 						 'extraspace'  => 'scalar',
 3987: 						 'extraspace_units' => 'scalar',
 3988: 					         'lastprinttype' => 'scalar'});
 3989:     
 3990:     # This will persistently load in the data we want from the
 3991:     # very first screen.
 3992:     
 3993:     if($helper->{VARS}->{PRINT_TYPE} eq $env{'form.lastprinttype'}) {
 3994: 	if (!defined ($env{"form.CURRENT_STATE"})) {
 3995: 	    
 3996: 	    $helper->{VARS}->{FINISHPAGE} = $env{'form.pagebreaks'};
 3997: 	    $helper->{VARS}->{EXTRASPACE} = $env{'form.extraspace'};
 3998: 	    $helper->{VARS}->{EXTRASPACE_UNITS} = $env{'form.extraspace_units'};
 3999: 	} else {
 4000: 	    my $state = $env{"form.CURRENT_STATE"};
 4001: 	    if ($state eq "START") {
 4002: 		$helper->{VARS}->{FINISHPAGE} = $env{'form.pagebreaks'};
 4003: 		$helper->{VARS}->{EXTRASPACE} = $env{'form.extraspace'};
 4004: 		$helper->{VARS}->{EXTRASPACE_UNITS} = $env{'form.extraspace_units'};
 4005: 		
 4006: 	    }
 4007: 	}
 4008: 	
 4009:     }
 4010: 
 4011:     # Detect whether we're coming from construction space
 4012:     if ($env{'form.postdata'}=~m{^/priv}) {
 4013:         $helper->{VARS}->{'filename'} = $env{'form.postdata'};
 4014:         $helper->{VARS}->{'construction'} = 1;
 4015:     } else {
 4016:         if ($env{'form.postdata'}) {
 4017:             $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($env{'form.postdata'});
 4018: 	    if ( $helper->{VARS}->{'symb'} eq '') {
 4019: 		$helper->{VARS}->{'postdata'} = $env{'form.postdata'};
 4020: 	    }
 4021:         }
 4022:         if ($env{'form.symb'}) {
 4023:             $helper->{VARS}->{'symb'} = $env{'form.symb'};
 4024:         }
 4025:         if ($env{'form.url'}) {
 4026:             $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($helper->{VARS}->{'postdata'});
 4027:         }
 4028: 
 4029:     }
 4030: 
 4031:     if ($env{'form.symb'}) {
 4032:         $helper->{VARS}->{'symb'} = $env{'form.symb'};
 4033:     }
 4034:     if ($env{'form.url'}) {
 4035:         $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($helper->{VARS}->{'postdata'});
 4036: 
 4037:     }
 4038:     $helper->{VARS}->{'symb'}=
 4039: 	&Apache::lonenc::check_encrypt($helper->{VARS}->{'symb'});
 4040:     my ($resourceTitle,$sequenceTitle,$mapTitle) = &details_for_menu($helper);
 4041:     if ($sequenceTitle ne '') {$helper->{VARS}->{'assignment'}=$sequenceTitle;}
 4042: 
 4043:     
 4044:     # Extract map
 4045:     my $symb = $helper->{VARS}->{'symb'};
 4046:     my ($map, $id, $url);
 4047:     my $subdir;
 4048:     my $is_published=0;		# True when printing from resource space.
 4049:     my $res_printable = 1;	# By default the current resource is printable.    
 4050:     my $userCanPrint = ($perm{'pav'} || $perm{'pfo'});
 4051:     my $res_printstartdate;
 4052:     my $res_printenddate;
 4053:     my $map_open = 0;
 4054:     my $map_close = 0xffffffff;
 4055:     my $course_open = 0;
 4056:     my $course_close = 0xffffffff;
 4057: 
 4058:     # Get the resource name from construction space
 4059:     if ($helper->{VARS}->{'construction'}) {
 4060:         $resourceTitle = substr($helper->{VARS}->{'filename'}, 
 4061:                                 rindex($helper->{VARS}->{'filename'}, '/')+1);
 4062:         $subdir = substr($helper->{VARS}->{'filename'},
 4063:                          0, rindex($helper->{VARS}->{'filename'}, '/') + 1);
 4064:     } else {
 4065: 	# From course space:
 4066: 
 4067: 	if ($symb ne '') {
 4068: 	    ($map, $id, $url) = &Apache::lonnet::decode_symb($symb);
 4069: 	    $helper->{VARS}->{'postdata'} = 
 4070: 		&Apache::lonenc::check_encrypt(&Apache::lonnet::clutter($url));
 4071: 	    my $navmap = Apache::lonnavmaps::navmap->new();
 4072: 	    my $res   = $navmap->getBySymb($symb);
 4073: 	    $res_printable  = $res->resprintable() || $userCanPrint; #printability in course context
 4074: 	    ($res_printstartdate, $res_printenddate) = 	&get_print_dates($res);
 4075: 	    ($course_open, $course_close) = &course_print_dates($res);
 4076: 	    ($map_open, $map_close)       = &map_print_dates($res);
 4077: 
 4078: 	} else {
 4079: 	    # Resource space.
 4080: 
 4081: 	    $url = $helper->{VARS}->{'postdata'};
 4082: 	    $is_published=1;	# From resource space.
 4083: 	}
 4084: 	$url = &Apache::lonnet::clutter($url);
 4085:         if (!$resourceTitle) { # if the resource doesn't have a title, use the filename
 4086:             my $postdata = $helper->{VARS}->{'postdata'};
 4087:             $resourceTitle = substr($postdata, rindex($postdata, '/') + 1);
 4088:         }
 4089:         $subdir = &Apache::lonnet::filelocation("", $url);
 4090: 
 4091: 
 4092:     }
 4093:     if (!$helper->{VARS}->{'curseed'} && $env{'form.curseed'}) {
 4094: 	$helper->{VARS}->{'curseed'}=$env{'form.curseed'};
 4095:     }
 4096: 
 4097:     if (!$helper->{VARS}->{'probstatus'} && $env{'form.problemtype'}) {
 4098: 	$helper->{VARS}->{'probstatus'}=$env{'form.problemstatus'};
 4099:     }
 4100: 
 4101:     my $userCanSeeHidden = Apache::lonnavmaps::advancedUser();
 4102: 
 4103:     Apache::lonhelper::registerHelperTags();
 4104: 
 4105:     # "Delete everything after the last slash."
 4106:     $subdir =~ s|/[^/]+$||;
 4107: 
 4108:     # What can be printed is a very dynamic decision based on
 4109:     # lots of factors. So we need to dynamically build this list.
 4110:     # To prevent security leaks, states are only added to the wizard
 4111:     # if they can be reached, which ensures manipulating the form input
 4112:     # won't allow anyone to reach states they shouldn't have permission
 4113:     # to reach.
 4114: 
 4115:     # printChoices is tracking the kind of printing the user can
 4116:     # do, and will be used in a choices construction later.
 4117:     # In the meantime we will be adding states and elements to
 4118:     # the helper by hand.
 4119:     my $printChoices = [];
 4120:     my $paramHash;
 4121: 
 4122:     # If there is a current resource and it is printable
 4123:     # Give that as a choice.
 4124: 
 4125:     if ($resourceTitle && $res_printable) {
 4126:         push @{$printChoices}, ["<b><i>$resourceTitle</i></b> (".&mt('the resource you just saw on the screen').")", 'current_document', 'PAGESIZE'];
 4127:     } 
 4128: 
 4129:     # Useful filter strings
 4130: 
 4131:     my $isPrintable = ' && $res->resprintable()';
 4132: 
 4133:     my $isProblem = '(($res->is_problem()||$res->contains_problem() ||$res->is_practice()))';
 4134:     $isProblem .= $isPrintable unless $userCanPrint;
 4135:     $isProblem .= ' && !$res->randomout()' if !$userCanSeeHidden;
 4136:     my $isProblemOrMap = '($res->is_problem() || $res->contains_problem() || $res->is_sequence() || $res->is_practice())';
 4137:     $isProblemOrMap .= $isPrintable unless $userCanPrint;
 4138:     my $isNotMap = '(!$res->is_sequence())';
 4139:     $isNotMap .= $isPrintable unless $userCanPrint;
 4140:     $isNotMap .= ' && !$res->randomout()' if !$userCanSeeHidden;
 4141:     my $isMap = '$res->is_map()';
 4142:     $isMap .= $isPrintable unless $userCanPrint;
 4143:     my $symbFilter = '$res->shown_symb() ';
 4144:     my $urlValue = '$res->link()';
 4145: 
 4146:     $helper->declareVar('SEQUENCE');
 4147: 
 4148:     # If we're in a sequence...
 4149: 
 4150:     my $start_new_option;
 4151:     if ($perm{'pav'}) {
 4152: 	$start_new_option = 
 4153: 	    "<option text='".&mt('Start new page[_1]before selected','<br />').
 4154: 	    "' variable='FINISHPAGE' />".
 4155: 	    "<option text='".&mt('Extra space[_1]before selected','<br />').
 4156: 	    "' variable='EXTRASPACE' type='text' />" .
 4157: 	    "<option " .
 4158: 	    "' variable='POSSIBLE_RESOURCES' type='hidden' />".
 4159: 	    "<option text='".&mt('Space units[_1]check for mm','<br />').
 4160: 	    "' variable='EXTRASPACE_UNITS' type='checkbox' />"
 4161: 	    ;
 4162: 	    
 4163: 
 4164:     }
 4165: 
 4166:     # If not construction space user can print the components of a page:
 4167: 
 4168:     my $page_ispage;
 4169:     my $page_title;
 4170:     if (!$helper->{VARS}->{'construction'}) {
 4171: 	my $varspostdata = $helper->{VARS}->{'postdata'};
 4172: 	my $varsassignment = $helper->{VARS}->{'assignment'};
 4173: 	my $page_navmap         = Apache::lonnavmaps::navmap->new();
 4174: 	if (defined($page_navmap)) {
 4175: 	    my @page_resources      = $page_navmap->retrieveResources($url);
 4176: 	    if(defined($page_resources[0])) {
 4177: 		$page_ispage       = $page_resources[0]->is_page();
 4178: 		$page_title     = $page_resources[0]->title();
 4179: 		my $resourcesymb   = $page_resources[0]->symb();
 4180: 		my ($pagemap, $pageid, $pageurl) = &Apache::lonnet::decode_symb($symb);
 4181: 		if ($page_ispage) {
 4182: 		    push @{$printChoices}, 
 4183: 		    [&mt('Selected [_1]Problems[_2] from page [_3]', '<b>', '</b>', '<b><i>'.$page_title.'</i></b>'), 
 4184: 		     'map_problems_in_page', 
 4185: 		     'CHOOSE_PROBLEMS_PAGE'];
 4186: 		    push @{$printChoices}, 
 4187: 		    [&mt('Selected [_1]Resources[_2] from page [_3]', '<b>', '</b>', '<b><i>'.$page_title.'</i></b>'), 
 4188: 		     'map_resources_in_page', 
 4189: 		     'CHOOSE_RESOURCES_PAGE'];
 4190: 		}
 4191:         my $helperFragment = &generate_resource_chooser('CHOOSE_PROBLEMS_PAGE',
 4192: 							'Select Problem(s) to print',
 4193: 							"multichoice='1' toponly='1' addstatus='1' closeallpages='1'",
 4194: 							'RESOURCES',
 4195: 							'PAGESIZE',
 4196: 							$url,
 4197: 							$isProblem, '',  $symbFilter,
 4198: 							$start_new_option);
 4199: 
 4200: 
 4201:       $helperFragment .= &generate_resource_chooser('CHOOSE_RESOURCES_PAGE',
 4202: 						    'Select Resource(s) to print',
 4203: 						    'multichoice="1" toponly="1" addstatus="1" closeallpages="1"',
 4204: 						    'RESOURCES',
 4205: 						    'PAGESIZE',
 4206: 						    $url,
 4207: 						    $isNotMap, '', $symbFilter,
 4208: 						    $start_new_option);
 4209: 
 4210: 						    
 4211: 
 4212: 
 4213: 
 4214: 	&Apache::lonxml::xmlparse($r, 'helper', $helperFragment);
 4215: 	
 4216: 	    }
 4217: 	}
 4218:     }
 4219: 
 4220:     if (($helper->{'VAR'}->{'construction'} ne '1' ) &&
 4221: 	$helper->{VARS}->{'postdata'} &&
 4222: 	$helper->{VARS}->{'assignment'}) {
 4223: 
 4224: 	# BZ 5209 - Print incomplete problems from sequence:
 4225: 	# the exact form of this depends on whether or not we are privileged or a mere
 4226: 	# plebe of s student:
 4227: 
 4228: 	my $printSelector = 'map_incomplete_problems_seq';
 4229: 	my $nextState     = 'CHOOSE_INCOMPLETE_SEQ';
 4230: 	my $textSuffix    = '';
 4231: 
 4232: 	if ($userCanPrint)  {
 4233: 	    $printSelector = 'map_incomplete_problems_people_seq';
 4234: 	    $nextState     = 'CHOOSE_INCOMPLETE_PEOPLE_SEQ';
 4235: 	    $textSuffix    = ' for selected students';
 4236: 	    my $helperStates =
 4237: 		&create_incomplete_folder_selstud_helper($helper, $map); 
 4238: 	    &Apache::lonxml::xmlparse($r, 'helper', $helperStates);
 4239: 	} else {
 4240: 	    if (&printable($map_open, $map_close)) {
 4241: 		my $helperStates = &create_incomplete_folder_helper($helper, $map); # Create needed states for student.
 4242: 		&Apache::lonxml::xmlparse($r, 'helper', $helperStates);
 4243: 	    } else {
 4244: 		# TODO: Figure out how to break the news...this folder is not printable.
 4245: 	    }
 4246: 	}
 4247: 
 4248: 	if ($userCanPrint || &printable($map_open, $map_close)) {
 4249: 	    push(@{$printChoices},
 4250: 		 [&mt('Selected  [_1]Incomplete Problems[_2] from folder [_3]' . $textSuffix,
 4251: 		      '<b>', '</b>',
 4252: 		      '<b><i>'. $sequenceTitle . '</b></i>'),
 4253: 		  $printSelector,
 4254: 		  $nextState]);
 4255: 	}
 4256:         # Allow problems from sequence
 4257: 	if ($userCanPrint || &printable($map_open, $map_close)) {
 4258: 	    push @{$printChoices}, 
 4259: 	    [&mt('Selected [_1]Problems[_2] from folder [_3]','<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>'), 
 4260: 	     'map_problems', 
 4261: 	     'CHOOSE_PROBLEMS'];
 4262: 	    # Allow all resources from sequence
 4263: 	    push @{$printChoices}, [&mt('Selected [_1]Resources[_2] from folder [_3]','<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>'), 
 4264: 				    'map_problems_pages', 
 4265: 				    'CHOOSE_PROBLEMS_HTML'];
 4266: 	    my $helperFragment = &generate_resource_chooser('CHOOSE_PROBLEMS',
 4267: 							    'Select Problem(s) to print',
 4268: 							    'multichoice="1" toponly="1" addstatus="1" closeallpages="1"',
 4269: 							    'RESOURCES',
 4270: 							    'PAGESIZE',
 4271: 							    $map,
 4272: 							    $isProblem, '',
 4273: 							    $symbFilter,
 4274: 							    $start_new_option);
 4275: 	    $helperFragment .= &generate_resource_chooser('CHOOSE_PROBLEMS_HTML',
 4276: 							  'Select Resource(s) to print',
 4277: 							  'multichoice="1" toponly="1" addstatus="1" closeallpages="1"',
 4278: 							  'RESOURCES',
 4279: 							  'PAGESIZE',
 4280: 							  $map,
 4281: 							  $isNotMap, '',
 4282: 							  $symbFilter,
 4283: 							  $start_new_option);
 4284: 	    
 4285: 	    &Apache::lonxml::xmlparse($r, 'helper', $helperFragment);
 4286: 	} else {
 4287: 	    # TODO: Figure out how to tell them the folder is not printable.
 4288: 	}
 4289:     }
 4290: 	# If the user has pfo (print for others) allow them to print all 
 4291: 	# problems and resources  in the entire course, optionally for selected students
 4292: 	my $post_data = $helper->{VARS}->{'postdata'};
 4293:     
 4294:     if ($perm{'pfo'} &&  !$is_published  &&
 4295:         ($post_data=~/\/res\// || $post_data =~/\/(syllabus|smppg|aboutme|bulletinboard)$/)) { 
 4296: 
 4297: 	# BZ 5209 - incomplete problems from entire course:
 4298: 
 4299: 	push(@{$printChoices},
 4300: 	     [&mtn('Selected <b>Incomplete Problems</b> from <b>entire course</b> for selected people'),
 4301: 	      'incomplete_problems_selpeople_course', 'INCOMPLETE_PROBLEMS_COURSE_RESOURCES']);
 4302: 	my $helperFragment = &create_incomplete_course_helper($helper); # Create needed states.
 4303: 
 4304: 	&Apache::lonxml::xmlparse($r, 'helper', $helperFragment);
 4305: 
 4306: 	#  Selected problems/resources from entire course:
 4307: 
 4308:         push @{$printChoices}, [&mtn('Selected <b>Problems</b> from <b>entire course</b>'), 'all_problems', 'ALL_PROBLEMS'];
 4309: 	push @{$printChoices}, [&mtn('Selected <b>Resources</b> from <b>entire course</b>'), 'all_resources', 'ALL_RESOURCES'];
 4310: 	push @{$printChoices}, [&mtn('Selected <b>Problems</b> from <b>entire course</b> for <b>selected people</b>'), 'all_problems_students', 'ALL_PROBLEMS_STUDENTS'];
 4311: my $suffixXml = <<ALL_PROBLEMS;
 4312:   <state name="STUDENTS1" title="Select People">
 4313:       <message><b>Select sorting order of printout</b> </message>
 4314:     <choices variable='student_sort'>
 4315:       <choice computer='0'>Sort by section then student</choice>
 4316:       <choice computer='1'>Sort by students across sections.</choice>
 4317:     </choices>
 4318:       <message><br /><hr /><br /> </message>
 4319:       <student multichoice='1' variable="STUDENTS" nextstate="PRINT_FORMATTING" coursepersonnel="1"/>
 4320:   </state>
 4321: ALL_PROBLEMS
 4322:          &Apache::lonxml::xmlparse($r, 'helper', 
 4323: 				   &generate_resource_chooser('ALL_PROBLEMS',
 4324: 							      'Select Problem(s) to print',
 4325: 							      'multichoice="1" suppressEmptySequences="0" addstatus="1" closeallpages="1"',
 4326: 							      'RESOURCES',
 4327: 							      'PAGESIZE',
 4328: 							      '',
 4329: 							      $isProblemOrMap, $isNotMap,
 4330: 							      $symbFilter,
 4331: 							      $start_new_option) .
 4332: 				   &generate_resource_chooser('ALL_RESOURCES',
 4333: 							      'Select Resource(s) to print',
 4334: 							      " toponly='0' multichoice='1' suppressEmptySequences='0' addstatus='1' closeallpages='1'",
 4335: 							      'RESOURCES',
 4336: 							      'PAGESIZE',
 4337: 							      '',
 4338: 							      $isNotMap,'',$symbFilter,
 4339: 							      $start_new_option) .
 4340: 				   &generate_resource_chooser('ALL_PROBLEMS_STUDENTS',
 4341: 							      'Select Problem(s) to print',
 4342: 							      'toponly="0" multichoice="1" suppressEmptySequences="0" addstatus="1" closeallpages="1"',
 4343: 							      'RESOURCES',
 4344: 							      'STUDENTS1',
 4345: 							      '',
 4346: 							      $isProblemOrMap,'' , $symbFilter,
 4347: 							      $start_new_option) .
 4348: 				     $suffixXml
 4349: 				   );
 4350: 
 4351: 	if ($helper->{VARS}->{'assignment'}) {
 4352: 
 4353: 	    # If we were looking at a page, allow a selection of problems from the page
 4354: 	    # either for selected students or for coded assignments.
 4355: 
 4356: 	    if ($page_ispage) {
 4357: 		push @{$printChoices}, [&mt('Selected [_1]Problems[_2] from page [_3] for [_4]selected people[_5]',
 4358: 					    '<b>', '</b>', '<b><i>'.$page_title.'</i></b>', '<b>', '</b>'),
 4359: 					'problems_for_students_from_page', 'CHOOSE_TGT_STUDENTS_PAGE'];
 4360: 		push @{$printChoices}, [&mt('Selected [_1]Problems[_2] from page [_3] for [_4]CODEd assignments[_5]',
 4361: 					    '<b>', '</b>', '<b><i>'.$page_title.'</i></b>', '<b>', '</b>'),
 4362: 					'problems_for_anon_page', 'CHOOSE_ANON1_PAGE'];
 4363: 	    }
 4364: 	    push @{$printChoices}, [&mt('Selected [_1]Problems[_2] from folder [_3] for [_4]selected people[_5]',
 4365: 					'<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>','<b>','</b>'), 
 4366: 				    'problems_for_students', 'CHOOSE_STUDENTS'];
 4367: 	    push @{$printChoices}, [&mt('Selected [_1]Problems[_2] from folder [_3] for [_4]CODEd assignments[_5]',
 4368: 					'<b>','</b>','<b><i>'.$sequenceTitle.'</i></b>','<b>','</b>'), 
 4369: 				    'problems_for_anon', 'CHOOSE_ANON1'];
 4370: 	}
 4371: 
 4372: 	my $randomly_ordered_warning = 
 4373:             &get_randomly_ordered_warning($helper, $map);
 4374: 
 4375: 	# resource_selector will hold a few states that:
 4376: 	#   - Allow resources to be selected for printing.
 4377: 	#   - Determine pagination between assignments.
 4378: 	#   - Determine how many assignments should be bundled into a single PDF.
 4379:         # TODO:
 4380: 	#    Probably good to do things like separate this up into several vars, each
 4381: 	#    with one state, and use REGEXPs at inclusion time to set state names
 4382: 	#    and next states for better mix and match capability
 4383: 	#
 4384: 	my $resource_selector= &generate_resource_chooser('SELECT_PROBLEMS',
 4385: 							  'Select resources to print',
 4386: 							  'multichoice="1" addstatus="1" closeallpages="1"',
 4387: 							  'RESOURCES', 
 4388: 							  'PRINT_FORMATTING',
 4389: 							  $map,
 4390: 							  $isProblem, '', $symbFilter,
 4391: 							  $start_new_option);
 4392: 	$resource_selector .=  &generate_format_selector($helper,
 4393:                                                          'How should results be printed?',
 4394:                                                          'PRINT_FORMATTING').
 4395:                                &generate_resource_chooser('CHOOSE_STUDENTS_PAGE',
 4396: 							'Select Problem(s) to print',
 4397: 							"multichoice='1' addstatus='1' closeallpages ='1'",
 4398: 							'RESOURCES',
 4399: 							'PRINT_FORMATTING',
 4400: 							$url,
 4401: 							$isProblem, '',  $symbFilter,
 4402: 							$start_new_option);
 4403: 
 4404: 
 4405: # Generate student choosers.
 4406: 
 4407: 
 4408: 
 4409:         &Apache::lonxml::xmlparse($r, 'helper',
 4410: 				  &generate_student_chooser('CHOOSE_TGT_STUDENTS_PAGE',
 4411: 							    'student_sort',
 4412: 							    'STUDENTS',
 4413: 							    'CHOOSE_STUDENTS_PAGE'));
 4414: 	&Apache::lonxml::xmlparse($r, 'helper', 
 4415: 				  &generate_student_chooser('CHOOSE_STUDENTS',
 4416: 							    'student_sort',
 4417: 							    'STUDENTS',
 4418: 							    'SELECT_PROBLEMS'));
 4419: 	&Apache::lonxml::xmlparse($r, 'helper', $resource_selector);
 4420: 
 4421: 	my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 4422: 	my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 4423:         my @names=&Apache::lonnet::getkeys('CODEs',$cdom,$cnum);
 4424: 	my $namechoice='<choice></choice>';
 4425: 	foreach my $name (sort {uc($a) cmp uc($b)} @names) {
 4426: 	    if ($name =~ /^error: 2 /) { next; }
 4427: 	    if ($name =~ /^type\0/) { next; }
 4428: 	    $namechoice.='<choice computer="'.$name.'">'.$name.'</choice>';
 4429: 	}
 4430: 
 4431: 
 4432: 	my %code_values;
 4433: 	my %codes_to_print;
 4434: 	foreach my $key (@names) {
 4435: 	    %code_values = &Apache::grades::get_codes($key, $cdom, $cnum);
 4436: 	    foreach my $key (keys(%code_values)) {
 4437: 		$codes_to_print{$key} = 1;
 4438: 	    }
 4439: 	}
 4440: 
 4441: 	my $code_selection;
 4442: 	foreach my $code (sort {uc($a) cmp uc($b)} (keys(%codes_to_print))) {
 4443: 	    my $choice  = $code;
 4444: 	    if ($code =~ /^[A-Z]+$/) { # Alpha code
 4445: 		$choice = &letters_to_num($code);
 4446: 	    }
 4447: 	    push(@{$helper->{DATA}{ALL_CODE_CHOICES}},[$code,$choice]);
 4448: 	}
 4449: 	if (%codes_to_print) {
 4450: 	    $code_selection .='   
 4451: 	    <message><b>Choose single CODE from list:</b></message>
 4452: 		<message></td><td></message>
 4453: 		<dropdown variable="CODE_SELECTED_FROM_LIST" multichoice="0" allowempty="0">
 4454:                   <choice></choice>
 4455:                   <exec>
 4456:                      push(@{$state->{CHOICES}},@{$helper->{DATA}{ALL_CODE_CHOICES}});
 4457:                   </exec>
 4458: 		</dropdown>
 4459: 	    <message></td></tr><tr><td></message>
 4460:             '.$/;
 4461: 
 4462: 	}
 4463: 
 4464:         my @lines = &Apache::grades::get_scantronformat_file();
 4465: 	my $codechoice='';
 4466: 	foreach my $line (@lines) {
 4467:             next if (($line =~ /^\#/) || ($line eq ''));
 4468: 	    my ($name,$description,$code_type,$code_length)=
 4469: 		(split(/:/,$line))[0,1,2,4];
 4470: 	    if ($code_length > 0 && 
 4471: 		$code_type =~/^(letter|number|-1)/) {
 4472: 		$codechoice.='<choice computer="'.$name.'">'.$description.'</choice>';
 4473: 	    }
 4474: 	}
 4475: 	if ($codechoice eq '') {
 4476: 	    $codechoice='<choice computer="default">Default</choice>';
 4477: 	}
 4478: 	my $anon1 = &generate_code_selector($helper, 
 4479: 					    'CHOOSE_ANON1',
 4480: 					    'SELECT_PROBLEMS',
 4481: 					    $codechoice,
 4482: 					    $code_selection,
 4483: 					    $namechoice) . $resource_selector;
 4484: 					    
 4485: 					    
 4486:         &Apache::lonxml::xmlparse($r, 'helper',$anon1);
 4487: 
 4488: 	my $anon_page = &generate_code_selector($helper,
 4489: 						'CHOOSE_ANON1_PAGE',
 4490: 						'SELECT_PROBLEMS_PAGE',
 4491: 						$codechoice,
 4492: 						$code_selection,
 4493: 						$namechoice) .
 4494: 			&generate_resource_chooser('SELECT_PROBLEMS_PAGE',
 4495: 						   'Select Problem(s) to print',
 4496: 						   "multichoice='1' addstatus='1' closeallpages ='1'",
 4497: 						   'RESOURCES',
 4498: 						   'PRINT_FORMATTING',
 4499: 						   $url,
 4500: 						   $isProblem, '',  $symbFilter,
 4501: 						   $start_new_option);
 4502: 	&Apache::lonxml::xmlparse($r, 'helper', $anon_page);
 4503: 
 4504: 
 4505: 	if ($helper->{VARS}->{'assignment'}) {
 4506: 
 4507: 	    # Assignment printing:
 4508: 
 4509: 	    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'];
 4510: 	    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'];
 4511: 	}
 4512: 	    
 4513: 
 4514: 	$resource_selector=<<RESOURCE_SELECTOR;
 4515:     <state name="SELECT_RESOURCES" title="Select Resources">
 4516:     $randomly_ordered_warning
 4517:     <nextstate>PRINT_FORMATTING</nextstate>
 4518:     <message><br /><big><i><b>Select resources for the assignment</b></i></big><br /></message>
 4519:     <resource variable="RESOURCES" multichoice="1" addstatus="1" 
 4520:               closeallpages="1">
 4521:       <filterfunc>return $isNotMap;</filterfunc>
 4522:       <mapurl>$map</mapurl>
 4523:       <valuefunc>return $symbFilter;</valuefunc>
 4524:       $start_new_option
 4525:       </resource>
 4526:     </state>
 4527: RESOURCE_SELECTOR
 4528: 
 4529:         $resource_selector .= &generate_format_selector($helper,
 4530:                                                         'Format of the print job',
 4531:                                                         'PRINT_FORMATTING');
 4532: 	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_STUDENTS1);
 4533:   <state name="CHOOSE_STUDENTS1" title="Select Students and Resources">
 4534:     <choices variable='student_sort'>
 4535:       <choice computer='0'>Sort by section then student</choice>
 4536:       <choice computer='1'>Sort by students across sections.</choice>
 4537:     </choices>
 4538:     <message><br /><hr /><br /></message>
 4539:     <student multichoice='1' variable="STUDENTS" nextstate="SELECT_RESOURCES" coursepersonnel="1" />
 4540: 
 4541:     </state>
 4542:     $resource_selector
 4543: CHOOSE_STUDENTS1
 4544: 
 4545: 	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_ANON2);
 4546:   <state name="CHOOSE_ANON2" title="Select CODEd Assignments">
 4547:     <nextstate>SELECT_RESOURCES</nextstate>
 4548:     <message><h4>Fill out one of the forms below</h4></message>
 4549:     <message><br /><hr /> <br /></message>
 4550:     <message><h3>Generate new CODEd Assignments</h3></message>
 4551:     <message><table><tr><td><b>Number of CODEd assignments to print:</b></td><td></message>
 4552:     <string variable="NUMBER_TO_PRINT_TOTAL" maxlength="5" size="5"  noproceed="1">
 4553:        <validator>
 4554: 	if (((\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}+0) < 1) &&
 4555: 	    !\$helper->{'VARS'}{'REUSE_OLD_CODES'}                &&
 4556: 	    !\$helper->{'VARS'}{'SINGLE_CODE'}                   &&
 4557: 	    !\$helper->{'VARS'}{'CODE_SELECTED_FROM_LIST'}) {
 4558: 	    return "You need to specify the number of assignments to print";
 4559: 	}
 4560:         if (((\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}+0) >= 1)  &&
 4561:              (\$helper->{'VARS'}{'SINGLE_CODE'} ne '') ) {
 4562:             return 'Specifying number of codes to print and a specific code is not compatible';
 4563:         }
 4564: 	return undef;
 4565:        </validator>
 4566:     </string>
 4567:     <message></td></tr><tr><td></message>
 4568:     <message><b>Names to save the CODEs under for later:</b></message>
 4569:     <message></td><td></message>
 4570:     <string variable="ANON_CODE_STORAGE_NAME" maxlength="50" size="20" />
 4571:     <message></td></tr><tr><td></message>
 4572:     <message><b>Bubblesheet type:</b></message>
 4573:     <message></td><td></message>
 4574:     <dropdown variable="CODE_OPTION" multichoice="0" allowempty="0">
 4575:     $codechoice
 4576:     </dropdown>
 4577:     <message></td></tr><tr><td></table></message>
 4578:     <message><br /><hr /><h3>Print a Specific CODE </h3><br /><table></message>
 4579:     <message><tr><td><b>Enter a CODE to print:</b></td><td></message>
 4580:     <string variable="SINGLE_CODE" size="10">
 4581:         <validator>
 4582: 	   if(!\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}           &&
 4583: 	      !\$helper->{'VARS'}{'REUSE_OLD_CODES'}                 &&
 4584: 	      !\$helper->{'VARS'}{'CODE_SELECTED_FROM_LIST'}) {
 4585: 	      return &Apache::lonprintout::is_code_valid(\$helper->{'VARS'}{'SINGLE_CODE'},
 4586: 						      \$helper->{'VARS'}{'CODE_OPTION'});
 4587: 	  } elsif (\$helper->{'VARS'}{'SINGLE_CODE'} ne ''){
 4588: 	      return 'Specifying a code name is incompatible specifying number of codes.';
 4589: 	   } else {
 4590: 	       return undef;	# Other forces control us.
 4591: 	   }
 4592:         </validator>
 4593:     </string>
 4594:     <message></td></tr><tr><td></message>
 4595:         $code_selection
 4596:     <message></td></tr></table></message>
 4597:     <message><hr /><h3>Reprint a Set of Saved CODEs</h3><table><tr><td></message>
 4598:     <message><b>Select saved CODEs:</b></message>
 4599:     <message></td><td></message>
 4600:     <dropdown variable="REUSE_OLD_CODES">
 4601:         $namechoice
 4602:     </dropdown>
 4603:     <message></td></tr></table></message>
 4604:   </state>
 4605:     $resource_selector
 4606: CHOOSE_ANON2
 4607:     }
 4608: 
 4609:     # FIXME: That RE should come from a library somewhere.
 4610:     if (($perm{'pav'} 
 4611: 	&& $subdir ne $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/'
 4612: 	&& (defined($helper->{'VARS'}->{'construction'})
 4613: 	    ||
 4614: 	    (&Apache::lonnet::allowed('bre',$subdir) eq 'F'
 4615: 	     && 
 4616: 	     $helper->{VARS}->{'postdata'}=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)/)
 4617: 	    )) 
 4618: 	&& $helper->{VARS}->{'assignment'} eq ""
 4619: 	) {
 4620: 	my $pretty_dir = &Apache::lonnet::hreflocation($subdir);
 4621:         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'];
 4622:         my $xmlfrag = <<CHOOSE_FROM_SUBDIR;
 4623:   <state name="CHOOSE_FROM_SUBDIR" title="Select File(s) from <b><small>$pretty_dir</small></b> to print">
 4624: 
 4625:     <files variable="FILES" multichoice='1'>
 4626:       <nextstate>PAGESIZE</nextstate>
 4627:       <filechoice>return '$subdir';</filechoice>
 4628: CHOOSE_FROM_SUBDIR
 4629:         
 4630:         # this is broken up because I really want interpolation above,
 4631:         # and I really DON'T want it below
 4632:         $xmlfrag .= <<'CHOOSE_FROM_SUBDIR';
 4633:       <filefilter>return Apache::lonhelper::files::not_old_version($filename) &&
 4634: 	  $filename =~ m/\.(problem|exam|quiz|assess|survey|form|library)$/;
 4635:       </filefilter>
 4636:       </files>
 4637:     </state>
 4638: CHOOSE_FROM_SUBDIR
 4639:         &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 4640:     }
 4641: 
 4642:     # Allow the user to select any sequence in the course, feed it to
 4643:     # another resource selector for that sequence
 4644:     if (!$helper->{VARS}->{'construction'} && !$is_published) {
 4645: 	push @$printChoices, [&mtn("Selected <b>Resources</b> from <b>selected folder</b> in course"),
 4646: 			      'select_sequences', 'CHOOSE_SEQUENCE'];
 4647: 	my $escapedSequenceName = $helper->{VARS}->{'SEQUENCE'};
 4648: 	#Escape apostrophes and backslashes for Perl
 4649: 	$escapedSequenceName =~ s/\\/\\\\/g;
 4650: 	$escapedSequenceName =~ s/'/\\'/g;
 4651: 	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_FROM_ANY_SEQUENCE);
 4652:   <state name="CHOOSE_SEQUENCE" title="Select Sequence To Print From">
 4653:     <message>Select the sequence to print resources from:</message>
 4654:     <resource variable="SEQUENCE">
 4655:       <nextstate>CHOOSE_FROM_ANY_SEQUENCE</nextstate>
 4656:       <filterfunc>return &Apache::lonprintout::printable_sequence(\$res);</filterfunc>
 4657:       <valuefunc>return $urlValue;</valuefunc>
 4658:       <choicefunc>return \$res->hasResource(\$res,sub { return !\$_[0]->is_sequence() },0,0);
 4659: 	</choicefunc>
 4660:       </resource>
 4661:     </state>
 4662:   <state name="CHOOSE_FROM_ANY_SEQUENCE" title="Select Resources To Print">
 4663:     <message>(mark desired resources then click "next" button) <br /></message>
 4664:     <resource variable="RESOURCES" multichoice="1" toponly='1' addstatus="1"
 4665:               closeallpages="1">
 4666:       <nextstate>PAGESIZE</nextstate>
 4667:       <filterfunc>return $isNotMap</filterfunc>
 4668:       <mapurl evaluate='1'>return '$escapedSequenceName';</mapurl>
 4669:       <valuefunc>return $symbFilter;</valuefunc>
 4670:       $start_new_option
 4671:       </resource>
 4672:     </state>
 4673: CHOOSE_FROM_ANY_SEQUENCE
 4674: }
 4675: 
 4676:     # Generate the first state, to select which resources get printed.
 4677:     Apache::lonhelper::state->new("START", "Select Printing Options:");
 4678:     if (!$res_printable) {
 4679:         my $now = time;
 4680:         my $shownprintstart = &Apache::lonlocal::locallocaltime($res_printstartdate);
 4681:         my $shownprintend = &Apache::lonlocal::locallocaltime($res_printenddate);
 4682:         my $noprintmsg;
 4683:         if (($res_printenddate) && ($res_printenddate < $now)) {
 4684:                 $noprintmsg = &mt('Printing for current resource no longer available (ended: [_1])',
 4685:                                   $shownprintend);
 4686:         } else {
 4687:             if (($res_printstartdate) && ($res_printstartdate > $now)) {
 4688:                 if (($res_printenddate) && ($res_printenddate > $now) && ($res_printenddate > $res_printstartdate)) {
 4689:                     $noprintmsg = &mt('Printing for current resource is only possible between [_1] and [_2]',
 4690:                                   $shownprintstart,$shownprintend);
 4691:                 } elsif (!$res_printenddate) {
 4692:                     $noprintmsg = &mt('Printing for current resource will only be possible starting [_1]',
 4693:                                       $shownprintstart);
 4694:                 } else {
 4695:                     $noprintmsg = &mt('Printing for current resource is unavailable');
 4696:                 }
 4697:             }
 4698:         }
 4699: 
 4700:         if ($noprintmsg) {
 4701:             $paramHash = Apache::lonhelper::getParamHash();
 4702: 	    $paramHash->{MESSAGE_TEXT} = 
 4703:                 '<p class="LC_info">'.$noprintmsg.'</p>';
 4704: 	    Apache::lonhelper::message->new();
 4705:         }
 4706:     }
 4707:     $paramHash = Apache::lonhelper::getParamHash();
 4708:     $paramHash = Apache::lonhelper::getParamHash();
 4709:     $paramHash->{MESSAGE_TEXT} = "";
 4710:     Apache::lonhelper::message->new();
 4711:     $paramHash = Apache::lonhelper::getParamHash();
 4712:     $paramHash->{'variable'} = 'PRINT_TYPE';
 4713:     $paramHash->{CHOICES} = $printChoices;
 4714:     Apache::lonhelper::choices->new();
 4715: 
 4716:     my $startedTable = 0; # have we started an HTML table yet? (need
 4717:                           # to close it later)
 4718: 
 4719:     if (($perm{'pav'} and $perm{'vgr'}) or 
 4720: 	($helper->{VARS}->{'construction'} eq '1')) {
 4721: 	&addMessage('<br />'
 4722:                    .'<h3>'.&mt('Print Options').'</h3>'
 4723:                    .&Apache::lonhtmlcommon::start_pick_box()
 4724:                    .&Apache::lonhtmlcommon::row_title(
 4725:                        '<label for="ANSWER_TYPE_forminput">'
 4726:                       .&mt('Print Answers')
 4727:                       .'</label>'
 4728:                     )
 4729:         );
 4730:         $paramHash = Apache::lonhelper::getParamHash();
 4731: 	$paramHash->{'variable'} = 'ANSWER_TYPE';   
 4732: 	$helper->declareVar('ANSWER_TYPE');         
 4733:         $paramHash->{CHOICES} = [
 4734:                                    ['Without Answers', 'yes'],
 4735:                                    ['With Answers', 'no'],
 4736:                                    ['Only Answers', 'only']
 4737:                                 ];
 4738:         Apache::lonhelper::dropdown->new();
 4739: 	&addMessage(&Apache::lonhtmlcommon::row_closure());
 4740: 	$startedTable = 1;
 4741: 
 4742: #
 4743: #  Select font size.
 4744: #
 4745: 
 4746:             $helper->declareVar('fontsize');
 4747:             &addMessage(&Apache::lonhtmlcommon::row_title(&mt('Font Size')));
 4748:             my $xmlfrag = << "FONT_SELECTION";
 4749: 
 4750:           
 4751:             <dropdown variable='fontsize' multichoice='0', allowempty='0'>
 4752:             <defaultvalue>
 4753: 		  return 'normalsize';
 4754:             </defaultvalue>
 4755:             <choice computer='tiny'>Tiny</choice>
 4756:             <choice computer='sub/superscriptsize'>Script Size</choice>
 4757:             <choice computer='footnotesize'>Footnote Size</choice>
 4758:             <choice computer='small'>Small</choice>
 4759:             <choice computer='normalsize'>Normal (default)</choice>
 4760:             <choice computer='large'>larger than normal</choice>
 4761:             <choice computer='Large'>Even larger than normal</choice>
 4762:             <choice computer='LARGE'>Still larger than normal</choice>
 4763:             <choice computer='huge'>huge font size</choice>
 4764:             <choice computer='Huge'>Largest possible size</choice>
 4765:             </dropdown>
 4766: FONT_SELECTION
 4767:             &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 4768:             &addMessage(&Apache::lonhtmlcommon::row_closure(1));
 4769:     }
 4770: 
 4771:     if ($perm{'pav'}) {
 4772: 	if (!$startedTable) {
 4773: 	    addMessage("<hr width='33%' /><table><tr><td align='right'>".
 4774:                        '<label for="LATEX_TYPE_forminput">'.
 4775:                        &mt('LaTeX mode').
 4776:                        "</label>: </td><td>");
 4777: 	    $startedTable = 1;
 4778: 	} else {
 4779: 	    &addMessage(&Apache::lonhtmlcommon::row_title(
 4780:                            '<label for="LATEX_TYPE_forminput">'
 4781:                            .&mt('LaTeX mode')
 4782:                            .'</label>'
 4783:                         )
 4784:             );
 4785: 	}
 4786:         $paramHash = Apache::lonhelper::getParamHash();
 4787: 	$paramHash->{'variable'} = 'LATEX_TYPE';   
 4788: 	$helper->declareVar('LATEX_TYPE');  
 4789: 	if ($helper->{VARS}->{'construction'} eq '1') {       
 4790: 	    $paramHash->{CHOICES} = [
 4791: 				     ['standard LaTeX mode', 'standard'], 
 4792: 				     ['LaTeX batchmode', 'batchmode'], ];
 4793: 	} else {
 4794: 	    $paramHash->{CHOICES} = [
 4795: 				     ['LaTeX batchmode', 'batchmode'],
 4796: 				     ['standard LaTeX mode', 'standard'] ];
 4797: 	}
 4798:         Apache::lonhelper::dropdown->new();
 4799:  
 4800: 	&addMessage(&Apache::lonhtmlcommon::row_closure()
 4801:                    .&Apache::lonhtmlcommon::row_title(
 4802:                         '<label for="TABLE_CONTENTS_forminput">'
 4803:                        .&mt('Print Table of Contents')
 4804:                        .'</label>'
 4805:                     )
 4806:         );
 4807:         $paramHash = Apache::lonhelper::getParamHash();
 4808: 	$paramHash->{'variable'} = 'TABLE_CONTENTS';   
 4809: 	$helper->declareVar('TABLE_CONTENTS');         
 4810:         $paramHash->{CHOICES} = [
 4811:                                    ['No', 'no'],
 4812:                                    ['Yes', 'yes'] ];
 4813:         Apache::lonhelper::dropdown->new();
 4814: 	&addMessage(&Apache::lonhtmlcommon::row_closure());
 4815:         
 4816: 	if (not $helper->{VARS}->{'construction'}) {
 4817: 	    &addMessage(&Apache::lonhtmlcommon::row_title(
 4818:                             '<label for="TABLE_INDEX_forminput">'
 4819:                            .&mt('Print Index')
 4820:                            .'</label>'
 4821:                         )
 4822:             );
 4823: 	    $paramHash = Apache::lonhelper::getParamHash();
 4824: 	    $paramHash->{'variable'} = 'TABLE_INDEX';   
 4825: 	    $helper->declareVar('TABLE_INDEX');         
 4826: 	    $paramHash->{CHOICES} = [
 4827: 				     ['No', 'no'],
 4828: 				     ['Yes', 'yes'] ];
 4829: 	    Apache::lonhelper::dropdown->new();
 4830:             &addMessage(&Apache::lonhtmlcommon::row_closure());
 4831:             &addMessage(&Apache::lonhtmlcommon::row_title(
 4832:                             '<label for="PRINT_DISCUSSIONS_forminput">'
 4833:                            .&mt('Print Discussions')
 4834:                            .'</label>'
 4835:                         )
 4836:             );
 4837: 	    $paramHash = Apache::lonhelper::getParamHash();
 4838: 	    $paramHash->{'variable'} = 'PRINT_DISCUSSIONS';   
 4839: 	    $helper->declareVar('PRINT_DISCUSSIONS');         
 4840: 	    $paramHash->{CHOICES} = [
 4841: 				     ['No', 'no'],
 4842: 				     ['Yes', 'yes'] ];
 4843: 	    Apache::lonhelper::dropdown->new();
 4844:             &addMessage(&Apache::lonhtmlcommon::row_closure());
 4845: 
 4846: 	    # Prompt for printing annotations too.
 4847: 		
 4848: 	    &addMessage(&Apache::lonhtmlcommon::row_title(
 4849:                             '<label for="PRINT_ANNOTATIONS_forminput">'
 4850:                            .&mt('Print Annotations')
 4851:                            .'</label>'
 4852:                         )
 4853:             );
 4854: 	    $paramHash = Apache::lonhelper::getParamHash();
 4855: 	    $paramHash->{'variable'} = "PRINT_ANNOTATIONS";
 4856: 	    $helper->declareVar("PRINT_ANNOTATIONS");
 4857: 	    $paramHash->{CHOICES} = [
 4858: 				     ['No', 'no'],
 4859: 				     ['Yes', 'yes']];
 4860: 	    Apache::lonhelper::dropdown->new();
 4861:             &addMessage(&Apache::lonhtmlcommon::row_closure());
 4862: 
 4863:             &addMessage(&Apache::lonhtmlcommon::row_title(&mt('Foils')));
 4864: 	    $paramHash = Apache::lonhelper::getParamHash();
 4865: 	    $paramHash->{'multichoice'} = "true";
 4866: 	    $paramHash->{'allowempty'}  = "true";
 4867: 	    $paramHash->{'variable'}   = "showallfoils";
 4868: 	    $paramHash->{'CHOICES'} = [ [&mt('Show All Foils'), "1"] ];
 4869: 	    Apache::lonhelper::choices->new();
 4870:             &addMessage(&Apache::lonhtmlcommon::row_closure(1));
 4871: 	}
 4872: 
 4873: 	if ($helper->{'VARS'}->{'construction'}) { 
 4874: 	    my $stylevalue='$Apache::lonnet::env{"construct.style"}';
 4875:             my $randseedtext=&mt("Use random seed");
 4876:             my $stylefiletext=&mt("Use style file");
 4877:             my $selectfiletext=&mt("Select style file");
 4878: 
 4879: 	    my $xmlfrag .= '<message>'
 4880:             .&Apache::lonhtmlcommon::row_title('<label for="curseed_forminput">'
 4881:                                               .$randseedtext
 4882:                                               .'</label>'
 4883:              )
 4884:             .'</message>
 4885:             <string variable="curseed" size="15" maxlength="15">
 4886:                 <defaultvalue>
 4887:                    return '.$helper->{VARS}->{'curseed'}.';
 4888:                 </defaultvalue>'
 4889:             .'</string>'
 4890:             .'<message>'
 4891:             .&Apache::lonhtmlcommon::row_closure()
 4892:             .&Apache::lonhtmlcommon::row_title('<label for="style_file">'
 4893:                                               .$stylefiletext
 4894:                                               .'</label>'
 4895:              )
 4896:             .'</message>
 4897:              <string variable="style_file" size="40">
 4898:                 <defaultvalue>
 4899:                     return '.$stylevalue.';
 4900:                 </defaultvalue>
 4901:              </string><message>&nbsp;'
 4902: .qq|<a href="javascript:openbrowser('helpform','style_file_forminput','sty')">|
 4903: .$selectfiletext.'</a>'
 4904:             .&Apache::lonhtmlcommon::row_closure()
 4905:             .&Apache::lonhtmlcommon::row_title(&mt('Show All Foils'))
 4906:             .'</message>
 4907: 	     <choices allowempty="1" multichoice="true" variable="showallfoils">
 4908:                 <choice computer="1">&nbsp;</choice>
 4909:              </choices>'
 4910: 	    .'<message>'
 4911:             .&Apache::lonhtmlcommon::row_closure()
 4912:             .'</message>';
 4913:             &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 4914: 
 4915: 
 4916:             &addMessage(&Apache::lonhtmlcommon::row_title(&mt('Problem Type')));
 4917: 	    #
 4918: 	    # Initial value from construction space:
 4919: 	    #
 4920: 	    if (!$helper->{VARS}->{'probstatus'} && $env{'form.problemtype'}) {
 4921: 		$helper->{VARS}->{'probstatus'} = $env{'form.problemtype'};	# initial value
 4922: 	    }
 4923: 	    $xmlfrag = << "PROBTYPE";
 4924: 		<dropdown variable="probstatus" multichoice="0" allowempty="0">
 4925: 		   <defaultvalue>
 4926: 		      return "$helper->{VARS}->{'probstatus'}";
 4927:                    </defaultvalue>
 4928: 		   <choice computer="problem">Homework Problem</choice>
 4929: 		   <choice computer="exam">Bubblesheet Exam Problem</choice>
 4930: 		   <choice computer="survey">Survey question</choice>
 4931:                    ,choice computer="anonsurvey"Anonymous survey question</choice>
 4932: 		</dropdown>
 4933: PROBTYPE
 4934:             &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 4935:             &addMessage(&Apache::lonhtmlcommon::row_closure(1));
 4936: 
 4937: 
 4938: 
 4939:         }
 4940:     }
 4941: 
 4942: 
 4943: 
 4944: 
 4945:     if ($startedTable) {
 4946:         &addMessage(&Apache::lonhtmlcommon::end_pick_box());
 4947:     }
 4948: 
 4949:     Apache::lonprintout::page_format_state->new("FORMAT");
 4950: 
 4951:     # Generate the PAGESIZE state which will offer the user the margin
 4952:     # choices if they select one column
 4953:     Apache::lonhelper::state->new("PAGESIZE", "Set Margins");
 4954:     Apache::lonprintout::page_size_state->new('pagesize', 'FORMAT', 'FINAL');
 4955: 
 4956: 
 4957:     $helper->process();
 4958: 
 4959: 
 4960:     # MANUAL BAILOUT CONDITION:
 4961:     # If we're in the "final" state, bailout and return to handler
 4962:     if ($helper->{STATE} eq 'FINAL') {
 4963:         return $helper;
 4964:     }    
 4965: 
 4966:     my $footer;
 4967:     if ($helper->{STATE} eq 'START') {
 4968:         my $prtspool=$r->dir_config('lonPrtDir'); 
 4969: 	$footer = &recently_generated($prtspool);
 4970:     }
 4971:     $r->print($helper->display($footer));
 4972:     &Apache::lonhelper::unregisterHelperTags();
 4973: 
 4974:     return OK;
 4975: }
 4976: 
 4977: 
 4978: 1;
 4979: 
 4980: package Apache::lonprintout::page_format_state;
 4981: 
 4982: =pod
 4983: 
 4984: =head1 Helper element: page_format_state
 4985: 
 4986: See lonhelper.pm documentation for discussion of the helper framework.
 4987: 
 4988: Apache::lonprintout::page_format_state is an element that gives the 
 4989: user an opportunity to select the page layout they wish to print 
 4990: with: Number of columns, portrait/landscape, and paper size. If you 
 4991: want to change the paper size choices, change the @paperSize array 
 4992: contents in this package.
 4993: 
 4994: page_format_state is always directly invoked in lonprintout.pm, so there
 4995: is no tag interface. You actually pass parameters to the constructor.
 4996: 
 4997: =over 4
 4998: 
 4999: =item * B<new>(varName): varName is where the print information will be stored in the format FIXME.
 5000: 
 5001: =back
 5002: 
 5003: =cut
 5004: 
 5005: use Apache::lonhelper;
 5006: 
 5007: no strict;
 5008: @ISA = ("Apache::lonhelper::element");
 5009: use strict;
 5010: use Apache::lonlocal;
 5011: use Apache::lonnet;
 5012: 
 5013: my $maxColumns = 2;
 5014: # it'd be nice if these all worked
 5015: #my @paperSize = ("letter [8 1/2x11 in]", "legal [8 1/2x14 in]", 
 5016: #                 "tabloid (ledger) [11x17 in]", "executive [7 1/2x10 in]",
 5017: #                 "a2 [420x594 mm]", "a3 [297x420 mm]", "a4 [210x297 mm]", 
 5018: #                 "a5 [148x210 mm]", "a6 [105x148 mm]" );
 5019: my @paperSize = ("letter [8 1/2x11 in]", "legal [8 1/2x14 in]", 
 5020: 		 "a4 [210x297 mm]");
 5021: 
 5022: # Tentative format: Orientation (L = Landscape, P = portrait) | Colnum |
 5023: #                   Paper type
 5024: 
 5025: sub new { 
 5026:     my $self = Apache::lonhelper::element->new();
 5027: 
 5028:     shift;
 5029: 
 5030:     $self->{'variable'} = shift;
 5031:     my $helper = Apache::lonhelper::getHelper();
 5032:     $helper->declareVar($self->{'variable'});
 5033:     bless($self);
 5034:     return $self;
 5035: }
 5036: 
 5037: sub render {
 5038:     my $self = shift;
 5039:     my $helper = Apache::lonhelper::getHelper();
 5040:     my $result = '';
 5041:     my $var = $self->{'variable'};
 5042:     my $PageLayout=&mt('Page layout');
 5043:     my $NumberOfColumns=&mt('Number of columns');
 5044:     my $PaperType=&mt('Paper type');
 5045:     my $landscape=&mt('Landscape');
 5046:     my $portrait=&mt('Portrait');
 5047:     my $pdfFormLabel=&mt('PDF Form Fields');
 5048:     my $with=&mt('with Form Fields');
 5049:     my $without=&mt('without Form Fields');
 5050:     
 5051: 
 5052:     $result.='<h3>'.&mt('Layout Options').'</h3>'
 5053:             .&Apache::loncommon::start_data_table()
 5054:             .&Apache::loncommon::start_data_table_header_row()
 5055:             .'<th>'.$PageLayout.'</th>'
 5056:             .'<th>'.$NumberOfColumns.'</th>'
 5057:             .'<th>'.$PaperType.'</th>'
 5058:             .'<th>'.$pdfFormLabel.'</th>'
 5059:             .&Apache::loncommon::end_data_table_header_row()
 5060:             .&Apache::loncommon::start_data_table_row()
 5061:     .'<td>'
 5062:     .'<label><input type="radio" name="'.${var}.'.layout" value="L" />'.$landscape.'</label><br />'
 5063:     .'<label><input type="radio" name="'.${var}.'.layout" value="P" checked="checked" />'.$portrait.'</label>'
 5064:     .'</td>';
 5065: 
 5066:     $result.='<td align="center">'
 5067:             .'<select name="'.${var}.'.cols">';
 5068: 
 5069:     my $i;
 5070:     for ($i = 1; $i <= $maxColumns; $i++) {
 5071:         if ($i == 2) {
 5072:             $result .= '<option value="'.$i.'" selected="selected">'.$i.'</option>'."\n";
 5073:         } else {
 5074:             $result .= '<option value="'.$i.'">'.$i.'</option>'."\n";
 5075:         }
 5076:     }
 5077: 
 5078:     $result .= "</select></td><td>\n";
 5079:     $result .= "<select name='${var}.paper'>\n";
 5080: 
 5081:     my %parmhash=&Apache::lonnet::coursedescription($env{'request.course.id'});
 5082:     my $DefaultPaperSize=lc($parmhash{'default_paper_size'});
 5083:     $DefaultPaperSize=~s/\s//g;
 5084:     if ($DefaultPaperSize eq '') {$DefaultPaperSize='letter';}
 5085:     $i = 0;
 5086:     foreach (@paperSize) {
 5087: 	$_=~/(\w+)/;
 5088: 	my $papersize=$1;
 5089:         if ($paperSize[$i]=~/$DefaultPaperSize/) {
 5090:             $result .= '<option selected="selected" value="'.$papersize.'">'.$paperSize[$i].'</option>'."\n";
 5091:         } else {
 5092:             $result .= '<option value="'.$papersize.'">'.$paperSize[$i].'</option>'."\n";
 5093:         }
 5094:         $i++;
 5095:     }
 5096:     $result .= <<HTML;
 5097:         </select>
 5098:     </td>
 5099:     <td align='center'>
 5100:         <select name='${var}.pdfFormFields'>
 5101:             <option selected="selected" value="no">$without</option>
 5102:             <option value="yes">$with</option>
 5103:         </select>
 5104:     </td>
 5105: HTML
 5106:     $result.=&Apache::loncommon::end_data_table_row()
 5107:             .&Apache::loncommon::end_data_table();
 5108: 
 5109:     return $result;
 5110: }
 5111: 
 5112: sub postprocess {
 5113:     my $self = shift;
 5114: 
 5115:     my $var = $self->{'variable'};
 5116:     my $helper = Apache::lonhelper->getHelper();
 5117:     $helper->{VARS}->{$var} = 
 5118:         $env{"form.$var.layout"} . '|' . $env{"form.$var.cols"} . '|' .
 5119:         $env{"form.$var.paper"} . '|' . $env{"form.$var.pdfFormFields"};
 5120:     return 1;
 5121: }
 5122: 
 5123: 1;
 5124: 
 5125: package Apache::lonprintout::page_size_state;
 5126: 
 5127: =pod
 5128: 
 5129: =head1 Helper element: page_size_state
 5130: 
 5131: See lonhelper.pm documentation for discussion of the helper framework.
 5132: 
 5133: Apache::lonprintout::page_size_state is an element that gives the 
 5134: user the opportunity to further refine the page settings if they
 5135: select a single-column page.
 5136: 
 5137: page_size_state is always directly invoked in lonprintout.pm, so there
 5138: is no tag interface. You actually pass parameters to the constructor.
 5139: 
 5140: =over 4
 5141: 
 5142: =item * B<new>(varName): varName is where the print information will be stored in the format FIXME.
 5143: 
 5144: =back
 5145: 
 5146: =cut
 5147: 
 5148: use Apache::lonhelper;
 5149: use Apache::lonnet;
 5150: no strict;
 5151: @ISA = ("Apache::lonhelper::element");
 5152: use strict;
 5153: 
 5154: 
 5155: 
 5156: sub new { 
 5157:     my $self = Apache::lonhelper::element->new();
 5158: 
 5159:     shift; # disturbs me (probably prevents subclassing) but works (drops
 5160:            # package descriptor)... - Jeremy
 5161: 
 5162:     $self->{'variable'} = shift;
 5163:     my $helper = Apache::lonhelper::getHelper();
 5164:     $helper->declareVar($self->{'variable'});
 5165: 
 5166:     # The variable name of the format element, so we can look into 
 5167:     # $helper->{VARS} to figure out whether the columns are one or two
 5168:     $self->{'formatvar'} = shift;
 5169: 
 5170: 
 5171:     $self->{NEXTSTATE} = shift;
 5172:     bless($self);
 5173: 
 5174:     return $self;
 5175: }
 5176: 
 5177: sub render {
 5178:     my $self = shift;
 5179:     my $helper = Apache::lonhelper::getHelper();
 5180:     my $result = '';
 5181:     my $var = $self->{'variable'};
 5182: 
 5183: 
 5184: 
 5185:     if (defined $self->{ERROR_MSG}) {
 5186:         $result .= '<br /><span class="LC_error">' . $self->{ERROR_MSG} . '</span><br />';
 5187:     }
 5188: 
 5189:     my $format = $helper->{VARS}->{$self->{'formatvar'}};
 5190: 
 5191:     # Use format to get sensible defaults for the margins:
 5192: 
 5193: 
 5194:     my ($laystyle, $cols, $papersize) = split(/\|/, $format);
 5195:     ($papersize)                      = split(/ /, $papersize);
 5196: 
 5197:     $laystyle = &Apache::lonprintout::map_laystyle($laystyle);
 5198: 
 5199: 
 5200: 
 5201:     my %size;
 5202:     ($size{'width_and_units'},
 5203:      $size{'height_and_units'},
 5204:      $size{'margin_and_units'})=
 5205: 	 &Apache::lonprintout::page_format($papersize, $laystyle, $cols);
 5206:     
 5207:     foreach my $dimension ('width','height','margin') {
 5208: 	($size{$dimension},$size{$dimension.'_unit'}) =
 5209: 	    split(/ +/, $size{$dimension.'_and_units'},2);
 5210:        	
 5211: 	foreach my $unit ('cm','in') {
 5212: 	    $size{$dimension.'_options'} .= '<option ';
 5213: 	    if ($size{$dimension.'_unit'} eq $unit) {
 5214: 		$size{$dimension.'_options'} .= 'selected="selected" ';
 5215: 	    }
 5216: 	    $size{$dimension.'_options'} .= '>'.$unit.'</option>';
 5217: 	}
 5218:     }
 5219: 
 5220:     # Adjust margin for LaTeX margin: .. requires units == cm or in.
 5221: 
 5222:     if ($size{'margin_unit'} eq 'in') {
 5223: 	$size{'margin'} += 1;
 5224:     }  else {
 5225: 	$size{'margin'} += 2.54;
 5226:     }
 5227:     my %lt = &Apache::lonlocal::texthash(
 5228:         'format' => 'How should each column be formatted?',
 5229:         'width'  => 'Width',
 5230:         'height' => 'Height',
 5231:         'margin' => 'Left Margin'
 5232:     );
 5233: 
 5234:     $result .= '<p>'.$lt{'format'}.'</p>'
 5235:               .&Apache::lonhtmlcommon::start_pick_box()
 5236:               .&Apache::lonhtmlcommon::row_title($lt{'width'})
 5237:               .'<input type="text" name="'.$var.'.width" value="'.$size{'width'}.'" size="4" />'
 5238:               .'<select name="'.$var.'.widthunit">'
 5239:               .$size{'width_options'}
 5240:               .'</select>'
 5241:               .&Apache::lonhtmlcommon::row_closure()
 5242:               .&Apache::lonhtmlcommon::row_title($lt{'height'})
 5243:               .'<input type="text" name="'.$var.'.height" value="'.$size{'height'}.'" size="4" />'
 5244:               .'<select name="'.$var.'.heightunit">'
 5245:               .$size{'height_options'}
 5246:               .'</select>'
 5247:               .&Apache::lonhtmlcommon::row_closure()
 5248:               .&Apache::lonhtmlcommon::row_title($lt{'margin'})
 5249:               .'<input type="text" name="'.$var.'.lmargin" value="'.$size{'margin'}.'" size="4" />'
 5250:               .'<select name="'.$var.'.lmarginunit">'
 5251:               .$size{'margin_options'}
 5252:               .'</select>'
 5253:               .&Apache::lonhtmlcommon::row_closure(1)
 5254:               .&Apache::lonhtmlcommon::end_pick_box();
 5255:     # <p>Hint: Some instructors like to leave scratch space for the student by
 5256:     # making the width much smaller than the width of the page.</p>
 5257: 
 5258:     return $result;
 5259: }
 5260: 
 5261: 
 5262: sub preprocess {
 5263:     my $self = shift;
 5264:     my $helper = Apache::lonhelper::getHelper();
 5265: 
 5266:     my $format = $helper->{VARS}->{$self->{'formatvar'}};
 5267: 
 5268:     #  If the user does not have 'pav' privilege, set default widths and
 5269:     #  on to the next state right away.
 5270:     #
 5271:     if (!$perm{'pav'}) {
 5272: 	my $var = $self->{'variable'};
 5273: 	my $format = $helper->{VARS}->{$self->{'formatvar'}};
 5274: 	
 5275: 	my ($laystyle, $cols, $papersize) = split(/\|/, $format);
 5276: 	($papersize)                      = split(/ /, $papersize);
 5277: 	
 5278: 	
 5279: 	$laystyle = &Apache::lonprintout::map_laystyle($laystyle);
 5280: 
 5281: 	#  Figure out some good defaults for the print out and set them:
 5282: 	
 5283: 	my %size;
 5284: 	($size{'width'},
 5285: 	 $size{'height'},
 5286: 	 $size{'lmargin'})=
 5287: 	     &Apache::lonprintout::page_format($papersize, $laystyle, $cols);
 5288: 	
 5289: 	foreach my $dim ('width', 'height', 'lmargin') {
 5290: 	    my ($value, $units) = split(/ /, $size{$dim});
 5291: 	    	    
 5292: 	    $helper->{VARS}->{"$var.".$dim}      = $value;
 5293: 	    $helper->{VARS}->{"$var.".$dim.'unit'} = $units;
 5294: 	    
 5295: 	}
 5296: 	
 5297: 
 5298: 	# Transition to the next state
 5299: 
 5300: 	$helper->changeState($self->{NEXTSTATE});
 5301:     }
 5302:    
 5303:     return 1;
 5304: }
 5305: 
 5306: sub postprocess {
 5307:     my $self = shift;
 5308: 
 5309:     my $var = $self->{'variable'};
 5310:     my $helper = Apache::lonhelper->getHelper();
 5311:     my $width = $helper->{VARS}->{$var .'.width'} = $env{"form.${var}.width"}; 
 5312:     my $height = $helper->{VARS}->{$var .'.height'} = $env{"form.${var}.height"}; 
 5313:     my $lmargin = $helper->{VARS}->{$var .'.lmargin'} = $env{"form.${var}.lmargin"}; 
 5314:     $helper->{VARS}->{$var .'.widthunit'} = $env{"form.${var}.widthunit"}; 
 5315:     $helper->{VARS}->{$var .'.heightunit'} = $env{"form.${var}.heightunit"}; 
 5316:     $helper->{VARS}->{$var .'.lmarginunit'} = $env{"form.${var}.lmarginunit"}; 
 5317: 
 5318:     my $error = '';
 5319: 
 5320:     # /^-?[0-9]+(\.[0-9]*)?$/ -> optional minus, at least on digit, followed 
 5321:     # by an optional period, followed by digits, ending the string
 5322: 
 5323:     if ($width !~  /^-?[0-9]*(\.[0-9]*)?$/) {
 5324:         $error .= "Invalid width; please type only a number.<br />\n";
 5325:     }
 5326:     if ($height !~  /^-?[0-9]*(\.[0-9]*)?$/) {
 5327:         $error .= "Invalid height; please type only a number.<br />\n";
 5328:     }
 5329:     if ($lmargin !~  /^-?[0-9]*(\.[0-9]*)?$/) {
 5330:         $error .= "Invalid left margin; please type only a number.<br />\n";
 5331:     } else {
 5332: 	# Adjust for LaTeX 1.0 inch margin:
 5333: 
 5334: 	if ($env{"form.${var}.lmarginunit"} eq "in") {
 5335: 	    $helper->{VARS}->{$var.'.lmargin'} = $lmargin - 1;
 5336: 	} else {
 5337: 	    $helper->{VARS}->{$var.'.lmargin'} = $lmargin - 2.54;
 5338: 	}
 5339:     }
 5340: 
 5341:     if (!$error) {
 5342:         Apache::lonhelper::getHelper()->changeState($self->{NEXTSTATE});
 5343:         return 1;
 5344:     } else {
 5345:         $self->{ERROR_MSG} = $error;
 5346:         return 0;
 5347:     }
 5348: }
 5349: 
 5350: __END__
 5351: 

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