File:  [LON-CAPA] / loncom / interface / lonprintout.pm
Revision 1.429: download - view: text, annotated - select for diffs
Tue Mar 14 23:24:46 2006 UTC (18 years, 2 months ago) by foxr
Branches: MAIN
CVS tags: HEAD
Last part of Enh. req. 3809
Support selection of number of assignments per printout
with radio button including 1 section per file.

    1: # The LearningOnline Network
    2: # Printout
    3: #
    4: # $Id: lonprintout.pm,v 1.429 2006/03/14 23:24:46 foxr 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: #
   26: # http://www.lon-capa.org/
   27: #
   28: #
   29: package Apache::lonprintout;
   30: 
   31: use strict;
   32: use Apache::Constants qw(:common :http);
   33: use Apache::lonxml;
   34: use Apache::lonnet;
   35: use Apache::loncommon;
   36: use Apache::inputtags;
   37: use Apache::grades;
   38: use Apache::edit;
   39: use Apache::File();
   40: use Apache::lonnavmaps;
   41: use Apache::lonratedt;
   42: use POSIX qw(strftime);
   43: use Apache::lonlocal;
   44: use Carp;
   45: 
   46: my %perm;
   47: 
   48: #
   49: #   Convert a numeric code to letters
   50: #
   51: sub num_to_letters {
   52:     my ($num) = @_;
   53:     my @nums= split('',$num);
   54:     my @num_to_let=('A'..'Z');
   55:     my $word;
   56:     foreach my $digit (@nums) { $word.=$num_to_let[$digit]; }
   57:     return $word;
   58: }
   59: #   Convert a letter code to numeric.
   60: #
   61: sub letters_to_num {
   62:     my ($letters) = @_;
   63:     my @letters = split('', uc($letters));
   64:     my %substitution;
   65:     my $digit = 0;
   66:     foreach my $letter ('A'..'J') {
   67: 	$substitution{$letter} = $digit;
   68: 	$digit++;
   69:     }
   70:     #  The substitution is done as below to preserve leading
   71:     #  zeroes which are needed to keep the code size exact
   72:     #
   73:     my $result ="";
   74:     foreach my $letter (@letters) {
   75: 	$result.=$substitution{$letter};
   76:     }
   77:     return $result;
   78: }
   79: 
   80: #  Determine if a code is a valid numeric code.  Valid
   81: #  numeric codes must be comprised entirely of digits and
   82: #  have a correct number of digits.
   83: #
   84: #  Parameters:
   85: #     value      - proposed code value.
   86: #     num_digits - Number of digits required.
   87: #
   88: sub is_valid_numeric_code {
   89:     my ($value, $num_digits) = @_;
   90:     #   Remove leading/trailing whitespace;
   91:     $value =~ s/^\s*//g;
   92:     $value =~ s/\s*$//g;
   93:     
   94:     #  All digits?
   95:     if ($value !~ /^[0-9]+$/) {
   96: 	return "Numeric code $value has invalid characters - must only be digits";
   97:     }
   98:     if (length($value) != $num_digits) {
   99: 	return "Numeric code $value incorrect number of digits (correct = $num_digits)";
  100:     }
  101:     return undef;
  102: }
  103: #   Determines if a code is a valid alhpa code.  Alpha codes
  104: #   are ciphers that map  [A-J,a-j] -> 0..9 0..9.
  105: #   They also have a correct digit count.
  106: # Parameters:
  107: #     value          - Proposed code value.
  108: #     num_letters    - correct number of letters.
  109: # Note:
  110: #    leading and trailing whitespace are ignored.
  111: #
  112: sub is_valid_alpha_code {
  113:     my ($value, $num_letters) = @_;
  114:     
  115:      # strip leading and trailing spaces.
  116: 
  117:     $value =~ s/^\s*//g;
  118:     $value =~ s/\s*$//g;
  119: 
  120:     #  All alphas in the right range?
  121:     if ($value !~ /^[A-J,a-j]+$/) {
  122: 	return "Invalid letter code $value must only contain A-J";
  123:     }
  124:     if (length($value) != $num_letters) {
  125: 	return "Letter code $value has incorrect number of letters (correct = $num_letters)";
  126:     }
  127:     return undef;
  128: }
  129: 
  130: #   Determine if a code entered by the user in a helper is valid.
  131: #   valid depends on the code type and the type of code selected.
  132: #   The type of code selected can either be numeric or 
  133: #   Alphabetic.  If alphabetic, the code, in fact is a simple
  134: #   substitution cipher for the actual numeric code: 0->A, 1->B ...
  135: #   We'll be nice and be case insensitive for alpha codes.
  136: # Parameters:
  137: #    code_value    - the value of the code the user typed in.
  138: #    code_option   - The code type selected from the set in the scantron format
  139: #                    table.
  140: # Returns:
  141: #    undef         - The code is valid.
  142: #    other         - An error message indicating what's wrong.
  143: #
  144: sub is_code_valid {
  145:     my ($code_value, $code_option) = @_;
  146:     my ($code_type, $code_length) = ('letter', 6);	# defaults.
  147:     open(FG, $Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
  148:     foreach my $line (<FG>) {
  149: 	my ($name, $type, $length) = (split(/:/, $line))[0,2,4];
  150: 	if($name eq $code_option) {
  151: 	    $code_length = $length;
  152: 	    if($type eq 'number') {
  153: 		$code_type = 'number';
  154: 	    }
  155: 	}
  156:     }
  157:     my $valid;
  158:     if ($code_type eq 'number') {
  159: 	return &is_valid_numeric_code($code_value, $code_length);
  160:     } else {
  161: 	return &is_valid_alpha_code($code_value, $code_length);
  162:     }
  163: 
  164: }
  165: 
  166: #   Compare two students by name.  The students are in the form
  167: #   returned by the helper:
  168: #      user:domain:section:last,   first:status
  169: #   This is a helper function for the perl sort built-in  therefore:
  170: # Implicit Inputs:
  171: #    $a     - The first element to compare (global)
  172: #    $b     - The second element to compare (global)
  173: # Returns:
  174: #   -1   - $a < $b
  175: #    0   - $a == $b
  176: #   +1   - $a > $b
  177: #   Note that the initial comparison is done on the last names with the
  178: #   first names only used to break the tie.
  179: #
  180: #
  181: sub compare_names {
  182:     #  First split the names up into the primary fields.
  183: 
  184:     my ($u1, $d1, $s1, $n1, $stat1) = split(/:/, $a);
  185:     my ($u2, $d2, $s2, $n2, $stat2) = split(/:/, $b);
  186: 
  187:     # Now split the last name and first name of each n:
  188:     #
  189: 
  190:     my ($l1,$f1) = split(/,/, $n1);
  191:     my ($l2,$f2) = split(/,/, $n2);
  192: 
  193:     # We don't bother to remove the leading/trailing whitespace from the
  194:     # firstname, unless the last names compare identical.
  195: 
  196:     if($l1 lt $l2) {
  197: 	return -1;
  198:     }
  199:     if($l1 gt $l2) {
  200: 	return  1;
  201:     }
  202: 
  203:     # Break the tie on the first name, but there are leading (possibly trailing
  204:     # whitespaces to get rid of first 
  205:     #
  206:     $f1 =~ s/^\s+//;		# Remove leading...
  207:     $f1 =~ s/\s+$//;		# Trailing spaces from first 1...
  208:     
  209:     $f2 =~ s/^\s+//;
  210:     $f2 =~ s/\s+$//;		# And the same for first 2...
  211: 
  212:     if($f1 lt $f2) {
  213: 	return -1;
  214:     }
  215:     if($f1 gt $f2) {
  216: 	return 1;
  217:     }
  218:     
  219:     #  Must be the same name.
  220: 
  221:     return 0;
  222: }
  223: 
  224: sub latex_header_footer_remove {
  225:     my $text = shift;
  226:     $text =~ s/\\end{document}//;
  227:     $text =~ s/\\documentclass([^&]*)\\begin{document}//;
  228:     return $text;
  229: }
  230: #
  231: #  If necessary, encapsulate text inside 
  232: #  a minipage env.
  233: #  necessity is determined by the problem_split param.
  234: #
  235: sub encapsulate_minipage {
  236:     my ($text) = @_;
  237:     if (!($env{'form.problem.split'} =~ /yes/i)) {
  238: 	$text = '\begin{minipage}{\textwidth}'.$text.'\end{minipage}';
  239:     }
  240:     return $text;
  241: }
  242: #
  243: #  The NUMBER_TO_PRINT and SPLIT_PDFS
  244: #  variables interact, this sub looks at these two parameters
  245: #  and comes up with a final value for NUMBER_TO_PRINT which can be:
  246: #     all     - if SPLIT_PDFS eq 'all'.
  247: #     1       - if SPLIT_PDFS eq 'oneper'
  248: #     section - if SPLIT_PDFS eq 'sections'
  249: #     <unchanged> - if SPLIT_PDFS eq 'usenumber'
  250: #
  251: sub adjust_number_to_print {
  252:     my $helper = shift;
  253: 
  254:     my $split_pdf = $helper->{'VARS'}->{'SPLIT_PDFS'};
  255:     
  256:     if ($split_pdf eq 'all') {
  257: 	$helper->{'VARS'}->{'NUMBER_TO_PRINT'} = 'all';
  258:     } elsif ($split_pdf eq 'oneper') {
  259: 	$helper->{'VARS'}->{'NUMBER_TO_PRINT'} = 1;
  260:     } elsif ($split_pdf eq 'sections') {
  261: 	$helper->{'VARS'}->{'NUMBER_TO_PRINT'} = 'section';
  262:     } elsif ($split_pdf eq 'usenumber') {
  263: 	#  Unmodified.
  264:     } else {
  265: 	# Error!!!!
  266: 
  267: 	croak "bad SPLIT_PDFS: $split_pdf in lonprintout::adjust_number_to_print";
  268:     }
  269: }
  270: 
  271: sub character_chart {
  272:     my $result = shift;	
  273:     $result =~ s/&\#0?0?(7|9);//g;
  274:     $result =~ s/&\#0?(10|13);//g;
  275:     $result =~ s/&\#0?32;/ /g;
  276:     $result =~ s/&\#0?33;/!/g;
  277:     $result =~ s/&(\#0?34|quot);/\"/g;
  278:     $result =~ s/&\#0?35;/\\\#/g;
  279:     $result =~ s/&\#0?36;/\\\$/g;
  280:     $result =~ s/&\#0?37;/\\%/g; 
  281:     $result =~ s/&(\#0?38|amp);/\\&/g; 
  282:     $result =~ s/&\#(0?39|146);/\'/g;
  283:     $result =~ s/&\#0?40;/(/g;
  284:     $result =~ s/&\#0?41;/)/g;
  285:     $result =~ s/&\#0?42;/\*/g;
  286:     $result =~ s/&\#0?43;/\+/g;
  287:     $result =~ s/&\#(0?44|130);/,/g;
  288:     $result =~ s/&\#0?45;/-/g;
  289:     $result =~ s/&\#0?46;/\./g;
  290:     $result =~ s/&\#0?47;/\//g;
  291:     $result =~ s/&\#0?48;/0/g;
  292:     $result =~ s/&\#0?49;/1/g;
  293:     $result =~ s/&\#0?50;/2/g;
  294:     $result =~ s/&\#0?51;/3/g;
  295:     $result =~ s/&\#0?52;/4/g;
  296:     $result =~ s/&\#0?53;/5/g;
  297:     $result =~ s/&\#0?54;/6/g;
  298:     $result =~ s/&\#0?55;/7/g;
  299:     $result =~ s/&\#0?56;/8/g;
  300:     $result =~ s/&\#0?57;/9/g;
  301:     $result =~ s/&\#0?58;/:/g;
  302:     $result =~ s/&\#0?59;/;/g;
  303:     $result =~ s/&(\#0?60|lt|\#139);/\$<\$/g;
  304:     $result =~ s/&\#0?61;/\\ensuremath\{=\}/g;
  305:     $result =~ s/&(\#0?62|gt|\#155);/\\ensuremath\{>\}/g;
  306:     $result =~ s/&\#0?63;/\?/g;
  307:     $result =~ s/&\#0?65;/A/g;
  308:     $result =~ s/&\#0?66;/B/g;
  309:     $result =~ s/&\#0?67;/C/g;
  310:     $result =~ s/&\#0?68;/D/g;
  311:     $result =~ s/&\#0?69;/E/g;
  312:     $result =~ s/&\#0?70;/F/g;
  313:     $result =~ s/&\#0?71;/G/g;
  314:     $result =~ s/&\#0?72;/H/g;
  315:     $result =~ s/&\#0?73;/I/g;
  316:     $result =~ s/&\#0?74;/J/g;
  317:     $result =~ s/&\#0?75;/K/g;
  318:     $result =~ s/&\#0?76;/L/g;
  319:     $result =~ s/&\#0?77;/M/g;
  320:     $result =~ s/&\#0?78;/N/g;
  321:     $result =~ s/&\#0?79;/O/g;
  322:     $result =~ s/&\#0?80;/P/g;
  323:     $result =~ s/&\#0?81;/Q/g;
  324:     $result =~ s/&\#0?82;/R/g;
  325:     $result =~ s/&\#0?83;/S/g;
  326:     $result =~ s/&\#0?84;/T/g;
  327:     $result =~ s/&\#0?85;/U/g;
  328:     $result =~ s/&\#0?86;/V/g;
  329:     $result =~ s/&\#0?87;/W/g;
  330:     $result =~ s/&\#0?88;/X/g;
  331:     $result =~ s/&\#0?89;/Y/g;
  332:     $result =~ s/&\#0?90;/Z/g;
  333:     $result =~ s/&\#0?91;/[/g;
  334:     $result =~ s/&\#0?92;/\\ensuremath\{\\setminus\}/g;
  335:     $result =~ s/&\#0?93;/]/g;
  336:     $result =~ s/&\#(0?94|136);/\\ensuremath\{\\wedge\}/g;
  337:     $result =~ s/&\#(0?95|138|154);/\\underline{\\makebox[2mm]{\\strut}}/g;
  338:     $result =~ s/&\#(0?96|145);/\`/g;
  339:     $result =~ s/&\#0?97;/a/g;
  340:     $result =~ s/&\#0?98;/b/g;
  341:     $result =~ s/&\#0?99;/c/g;
  342:     $result =~ s/&\#100;/d/g;
  343:     $result =~ s/&\#101;/e/g;
  344:     $result =~ s/&\#102;/f/g;
  345:     $result =~ s/&\#103;/g/g;
  346:     $result =~ s/&\#104;/h/g;
  347:     $result =~ s/&\#105;/i/g;
  348:     $result =~ s/&\#106;/j/g;
  349:     $result =~ s/&\#107;/k/g;
  350:     $result =~ s/&\#108;/l/g;
  351:     $result =~ s/&\#109;/m/g;
  352:     $result =~ s/&\#110;/n/g;
  353:     $result =~ s/&\#111;/o/g;
  354:     $result =~ s/&\#112;/p/g;
  355:     $result =~ s/&\#113;/q/g;
  356:     $result =~ s/&\#114;/r/g;
  357:     $result =~ s/&\#115;/s/g;
  358:     $result =~ s/&\#116;/t/g;
  359:     $result =~ s/&\#117;/u/g;
  360:     $result =~ s/&\#118;/v/g;
  361:     $result =~ s/&\#119;/w/g;
  362:     $result =~ s/&\#120;/x/g;
  363:     $result =~ s/&\#121;/y/g;
  364:     $result =~ s/&\#122;/z/g;
  365:     $result =~ s/&\#123;/\\{/g;
  366:     $result =~ s/&\#124;/\|/g;
  367:     $result =~ s/&\#125;/\\}/g;
  368:     $result =~ s/&\#126;/\~/g;
  369:     $result =~ s/&\#131;/\\textflorin /g;
  370:     $result =~ s/&\#132;/\"/g;
  371:     $result =~ s/&\#133;/\\ensuremath\{\\ldots\}/g;
  372:     $result =~ s/&\#134;/\\ensuremath\{\\dagger\}/g;
  373:     $result =~ s/&\#135;/\\ensuremath\{\\ddagger\}/g;
  374:     $result =~ s/&\#137;/\\textperthousand /g;
  375:     $result =~ s/&\#140;/{\\OE}/g;
  376:     $result =~ s/&\#147;/\`\`/g;
  377:     $result =~ s/&\#148;/\'\'/g;
  378:     $result =~ s/&\#149;/\\ensuremath\{\\bullet\}/g;
  379:     $result =~ s/&\#150;/--/g;
  380:     $result =~ s/&\#151;/---/g;
  381:     $result =~ s/&\#152;/\\ensuremath\{\\sim\}/g;
  382:     $result =~ s/&\#153;/\\texttrademark /g;
  383:     $result =~ s/&\#156;/\\oe/g;
  384:     $result =~ s/&\#159;/\\\"Y/g;
  385:     $result =~ s/&(\#160|nbsp);/~/g;
  386:     $result =~ s/&(\#161|iexcl);/!\`/g;
  387:     $result =~ s/&(\#162|cent);/\\textcent /g;
  388:     $result =~ s/&(\#163|pound);/\\pounds /g; 
  389:     $result =~ s/&(\#164|curren);/\\textcurrency /g;
  390:     $result =~ s/&(\#165|yen);/\\textyen /g;
  391:     $result =~ s/&(\#166|brvbar);/\\textbrokenbar /g;
  392:     $result =~ s/&(\#167|sect);/\\textsection /g;
  393:     $result =~ s/&(\#168|uml);/\\texthighdieresis /g;
  394:     $result =~ s/&(\#169|copy);/\\copyright /g;
  395:     $result =~ s/&(\#170|ordf);/\\textordfeminine /g;
  396:     $result =~ s/&(\#172|not);/\\ensuremath\{\\neg\}/g;
  397:     $result =~ s/&(\#173|shy);/ - /g;
  398:     $result =~ s/&(\#174|reg);/\\textregistered /g;
  399:     $result =~ s/&(\#175|macr);/\\ensuremath\{^{-}\}/g;
  400:     $result =~ s/&(\#176|deg);/\\ensuremath\{^{\\circ}\}/g;
  401:     $result =~ s/&(\#177|plusmn);/\\ensuremath\{\\pm\}/g;
  402:     $result =~ s/&(\#178|sup2);/\\ensuremath\{^2\}/g;
  403:     $result =~ s/&(\#179|sup3);/\\ensuremath\{^3\}/g;
  404:     $result =~ s/&(\#180|acute);/\\textacute /g;
  405:     $result =~ s/&(\#181|micro);/\\ensuremath\{\\mu\}/g;
  406:     $result =~ s/&(\#182|para);/\\P/g;
  407:     $result =~ s/&(\#183|middot);/\\ensuremath\{\\cdot\}/g;
  408:     $result =~ s/&(\#184|cedil);/\\c{\\strut}/g;
  409:     $result =~ s/&(\#185|sup1);/\\ensuremath\{^1\}/g;
  410:     $result =~ s/&(\#186|ordm);/\\textordmasculine /g;
  411:     $result =~ s/&(\#188|frac14);/\\textonequarter /g;
  412:     $result =~ s/&(\#189|frac12);/\\textonehalf /g;
  413:     $result =~ s/&(\#190|frac34);/\\textthreequarters /g;
  414:     $result =~ s/&(\#191|iquest);/?\`/g;   
  415:     $result =~ s/&(\#192|Agrave);/\\\`{A}/g;  
  416:     $result =~ s/&(\#193|Aacute);/\\\'{A}/g; 
  417:     $result =~ s/&(\#194|Acirc);/\\^{A}/g;
  418:     $result =~ s/&(\#195|Atilde);/\\~{A}/g;
  419:     $result =~ s/&(\#196|Auml);/\\\"{A}/g; 
  420:     $result =~ s/&(\#197|Aring);/{\\AA}/g;
  421:     $result =~ s/&(\#198|AElig);/{\\AE}/g;
  422:     $result =~ s/&(\#199|Ccedil);/\\c{c}/g;
  423:     $result =~ s/&(\#200|Egrave);/\\\`{E}/g;  
  424:     $result =~ s/&(\#201|Eacute);/\\\'{E}/g;    
  425:     $result =~ s/&(\#202|Ecirc);/\\^{E}/g;
  426:     $result =~ s/&(\#203|Euml);/\\\"{E}/g;
  427:     $result =~ s/&(\#204|Igrave);/\\\`{I}/g;
  428:     $result =~ s/&(\#205|Iacute);/\\\'{I}/g;    
  429:     $result =~ s/&(\#206|Icirc);/\\^{I}/g;
  430:     $result =~ s/&(\#207|Iuml);/\\\"{I}/g;    
  431:     $result =~ s/&(\#209|Ntilde);/\\~{N}/g;
  432:     $result =~ s/&(\#210|Ograve);/\\\`{O}/g;
  433:     $result =~ s/&(\#211|Oacute);/\\\'{O}/g;
  434:     $result =~ s/&(\#212|Ocirc);/\\^{O}/g;
  435:     $result =~ s/&(\#213|Otilde);/\\~{O}/g;
  436:     $result =~ s/&(\#214|Ouml);/\\\"{O}/g;    
  437:     $result =~ s/&(\#215|times);/\\ensuremath\{\\times\}/g;
  438:     $result =~ s/&(\#216|Oslash);/{\\O}/g;
  439:     $result =~ s/&(\#217|Ugrave);/\\\`{U}/g;    
  440:     $result =~ s/&(\#218|Uacute);/\\\'{U}/g;
  441:     $result =~ s/&(\#219|Ucirc);/\\^{U}/g;
  442:     $result =~ s/&(\#220|Uuml);/\\\"{U}/g;
  443:     $result =~ s/&(\#221|Yacute);/\\\'{Y}/g;
  444:     $result =~ s/&(\#223|szlig);/{\\ss}/g;
  445:     $result =~ s/&(\#224|agrave);/\\\`{a}/g;
  446:     $result =~ s/&(\#225|aacute);/\\\'{a}/g;
  447:     $result =~ s/&(\#226|acirc);/\\^{a}/g;
  448:     $result =~ s/&(\#227|atilde);/\\~{a}/g;
  449:     $result =~ s/&(\#228|auml);/\\\"{a}/g;
  450:     $result =~ s/&(\#229|aring);/{\\aa}/g;
  451:     $result =~ s/&(\#230|aelig);/{\\ae}/g;
  452:     $result =~ s/&(\#231|ccedil);/\\c{c}/g;
  453:     $result =~ s/&(\#232|egrave);/\\\`{e}/g;
  454:     $result =~ s/&(\#233|eacute);/\\\'{e}/g;
  455:     $result =~ s/&(\#234|ecirc);/\\^{e}/g;
  456:     $result =~ s/&(\#235|euml);/\\\"{e}/g;
  457:     $result =~ s/&(\#236|igrave);/\\\`{i}/g;
  458:     $result =~ s/&(\#237|iacute);/\\\'{i}/g;
  459:     $result =~ s/&(\#238|icirc);/\\^{i}/g;
  460:     $result =~ s/&(\#239|iuml);/\\\"{i}/g;
  461:     $result =~ s/&(\#240|eth);/\\ensuremath\{\\partial\}/g;
  462:     $result =~ s/&(\#241|ntilde);/\\~{n}/g;
  463:     $result =~ s/&(\#242|ograve);/\\\`{o}/g;
  464:     $result =~ s/&(\#243|oacute);/\\\'{o}/g;
  465:     $result =~ s/&(\#244|ocirc);/\\^{o}/g;
  466:     $result =~ s/&(\#245|otilde);/\\~{o}/g;
  467:     $result =~ s/&(\#246|ouml);/\\\"{o}/g;
  468:     $result =~ s/&(\#247|divide);/\\ensuremath\{\\div\}/g;
  469:     $result =~ s/&(\#248|oslash);/{\\o}/g;
  470:     $result =~ s/&(\#249|ugrave);/\\\`{u}/g; 
  471:     $result =~ s/&(\#250|uacute);/\\\'{u}/g;
  472:     $result =~ s/&(\#251|ucirc);/\\^{u}/g;
  473:     $result =~ s/&(\#252|uuml);/\\\"{u}/g;
  474:     $result =~ s/&(\#253|yacute);/\\\'{y}/g;
  475:     $result =~ s/&(\#255|yuml);/\\\"{y}/g;
  476:     $result =~ s/&\#295;/\\ensuremath\{\\hbar\}/g;
  477:     $result =~ s/&\#952;/\\ensuremath\{\\theta\}/g;
  478: #Greek Alphabet
  479:     $result =~ s/&(alpha|\#945);/\\ensuremath\{\\alpha\}/g;
  480:     $result =~ s/&(beta|\#946);/\\ensuremath\{\\beta\}/g;
  481:     $result =~ s/&(gamma|\#947);/\\ensuremath\{\\gamma\}/g;
  482:     $result =~ s/&(delta|\#948);/\\ensuremath\{\\delta\}/g;
  483:     $result =~ s/&(epsilon|\#949);/\\ensuremath\{\\epsilon\}/g;
  484:     $result =~ s/&(zeta|\#950);/\\ensuremath\{\\zeta\}/g;
  485:     $result =~ s/&(eta|\#951);/\\ensuremath\{\\eta\}/g;
  486:     $result =~ s/&(theta|\#952);/\\ensuremath\{\\theta\}/g;
  487:     $result =~ s/&(iota|\#953);/\\ensuremath\{\\iota\}/g;
  488:     $result =~ s/&(kappa|\#954);/\\ensuremath\{\\kappa\}/g;
  489:     $result =~ s/&(lambda|\#955);/\\ensuremath\{\\lambda\}/g;
  490:     $result =~ s/&(mu|\#956);/\\ensuremath\{\\mu\}/g;
  491:     $result =~ s/&(nu|\#957);/\\ensuremath\{\\nu\}/g;
  492:     $result =~ s/&(xi|\#958);/\\ensuremath\{\\xi\}/g;
  493:     $result =~ s/&(omicron|\#959);/o/g;
  494:     $result =~ s/&(pi|\#960);/\\ensuremath\{\\pi\}/g;
  495:     $result =~ s/&(rho|\#961);/\\ensuremath\{\\rho\}/g;
  496:     $result =~ s/&(sigma|\#963);/\\ensuremath\{\\sigma\}/g;
  497:     $result =~ s/&(tau|\#964);/\\ensuremath\{\\tau\}/g;
  498:     $result =~ s/&(upsilon|\#965);/\\ensuremath\{\\upsilon\}/g;
  499:     $result =~ s/&(phi|\#966);/\\ensuremath\{\\phi\}/g;
  500:     $result =~ s/&(chi|\#967);/\\ensuremath\{\\chi\}/g;
  501:     $result =~ s/&(psi|\#968);/\\ensuremath\{\\psi\}/g;
  502:     $result =~ s/&(omega|\#969);/\\ensuremath\{\\omega\}/g;
  503:     $result =~ s/&(thetasym|\#977);/\\ensuremath\{\\vartheta\}/g;
  504:     $result =~ s/&(piv|\#982);/\\ensuremath\{\\varpi\}/g;
  505:     $result =~ s/&(Alpha|\#913);/A/g;
  506:     $result =~ s/&(Beta|\#914);/B/g;
  507:     $result =~ s/&(Gamma|\#915);/\\ensuremath\{\\Gamma\}/g;
  508:     $result =~ s/&(Delta|\#916);/\\ensuremath\{\\Delta\}/g;
  509:     $result =~ s/&(Epsilon|\#917);/E/g;
  510:     $result =~ s/&(Zeta|\#918);/Z/g;
  511:     $result =~ s/&(Eta|\#919);/H/g;
  512:     $result =~ s/&(Theta|\#920);/\\ensuremath\{\\Theta\}/g;
  513:     $result =~ s/&(Iota|\#921);/I/g;
  514:     $result =~ s/&(Kappa|\#922);/K/g;
  515:     $result =~ s/&(Lambda|\#923);/\\ensuremath\{\\Lambda\}/g;
  516:     $result =~ s/&(Mu|\#924);/M/g;
  517:     $result =~ s/&(Nu|\#925);/N/g;
  518:     $result =~ s/&(Xi|\#926);/\\ensuremath\{\\Xi\}/g;
  519:     $result =~ s/&(Omicron|\#927);/O/g;
  520:     $result =~ s/&(Pi|\#928);/\\ensuremath\{\\Pi\}/g;
  521:     $result =~ s/&(Rho|\#929);/P/g;
  522:     $result =~ s/&(Sigma|\#931);/\\ensuremath\{\\Sigma\}/g;
  523:     $result =~ s/&(Tau|\#932);/T/g;
  524:     $result =~ s/&(Upsilon|\#933);/\\ensuremath\{\\Upsilon\}/g;
  525:     $result =~ s/&(Phi|\#934);/\\ensuremath\{\\Phi\}/g;
  526:     $result =~ s/&(Chi|\#935);/X/g;
  527:     $result =~ s/&(Psi|\#936);/\\ensuremath\{\\Psi\}/g;
  528:     $result =~ s/&(Omega|\#937);/\\ensuremath\{\\Omega\}/g;
  529: #Arrows (extended HTML 4.01)
  530:     $result =~ s/&(larr|\#8592);/\\ensuremath\{\\leftarrow\}/g;
  531:     $result =~ s/&(uarr|\#8593);/\\ensuremath\{\\uparrow\}/g;
  532:     $result =~ s/&(rarr|\#8594);/\\ensuremath\{\\rightarrow\}/g;
  533:     $result =~ s/&(darr|\#8595);/\\ensuremath\{\\downarrow\}/g;
  534:     $result =~ s/&(harr|\#8596);/\\ensuremath\{\\leftrightarrow\}/g;
  535:     $result =~ s/&(lArr|\#8656);/\\ensuremath\{\\Leftarrow\}/g;
  536:     $result =~ s/&(uArr|\#8657);/\\ensuremath\{\\Uparrow\}/g;
  537:     $result =~ s/&(rArr|\#8658);/\\ensuremath\{\\Rightarrow\}/g;
  538:     $result =~ s/&(dArr|\#8659);/\\ensuremath\{\\Downarrow\}/g;
  539:     $result =~ s/&(hArr|\#8660);/\\ensuremath\{\\Leftrightarrow\}/g;
  540: #Mathematical Operators (extended HTML 4.01)
  541:     $result =~ s/&(forall|\#8704);/\\ensuremath\{\\forall\}/g;
  542:     $result =~ s/&(part|\#8706);/\\ensuremath\{\\partial\}/g;
  543:     $result =~ s/&(exist|\#8707);/\\ensuremath\{\\exists\}/g;
  544:     $result =~ s/&(empty|\#8709);/\\ensuremath\{\\emptyset\}/g;
  545:     $result =~ s/&(nabla|\#8711);/\\ensuremath\{\\nabla\}/g;
  546:     $result =~ s/&(isin|\#8712);/\\ensuremath\{\\in\}/g;
  547:     $result =~ s/&(notin|\#8713);/\\ensuremath\{\\notin\}/g;
  548:     $result =~ s/&(ni|\#8715);/\\ensuremath\{\\ni\}/g;
  549:     $result =~ s/&(prod|\#8719);/\\ensuremath\{\\prod\}/g;
  550:     $result =~ s/&(sum|\#8721);/\\ensuremath\{\\sum\}/g;
  551:     $result =~ s/&(minus|\#8722);/\\ensuremath\{-\}/g;
  552:     $result =~ s/–/\\ensuremath\{-\}/g;
  553:     $result =~ s/&(lowast|\#8727);/\\ensuremath\{*\}/g;
  554:     $result =~ s/&(radic|\#8730);/\\ensuremath\{\\surd\}/g;
  555:     $result =~ s/&(prop|\#8733);/\\ensuremath\{\\propto\}/g;
  556:     $result =~ s/&(infin|\#8734);/\\ensuremath\{\\infty\}/g;
  557:     $result =~ s/&(ang|\#8736);/\\ensuremath\{\\angle\}/g;
  558:     $result =~ s/&(and|\#8743);/\\ensuremath\{\\wedge\}/g;
  559:     $result =~ s/&(or|\#8744);/\\ensuremath\{\\vee\}/g;
  560:     $result =~ s/&(cap|\#8745);/\\ensuremath\{\\cap\}/g;
  561:     $result =~ s/&(cup|\#8746);/\\ensuremath\{\\cup\}/g;
  562:     $result =~ s/&(int|\#8747);/\\ensuremath\{\\int\}/g;
  563:     $result =~ s/&(sim|\#8764);/\\ensuremath\{\\sim\}/g;
  564:     $result =~ s/&(cong|\#8773);/\\ensuremath\{\\cong\}/g;
  565:     $result =~ s/&(asymp|\#8776);/\\ensuremath\{\\approx\}/g;
  566:     $result =~ s/&(ne|\#8800);/\\ensuremath\{\\not=\}/g;
  567:     $result =~ s/&(equiv|\#8801);/\\ensuremath\{\\equiv\}/g;
  568:     $result =~ s/&(le|\#8804);/\\ensuremath\{\\leq\}/g;
  569:     $result =~ s/&(ge|\#8805);/\\ensuremath\{\\geq\}/g;
  570:     $result =~ s/&(sub|\#8834);/\\ensuremath\{\\subset\}/g;
  571:     $result =~ s/&(sup|\#8835);/\\ensuremath\{\\supset\}/g;
  572:     $result =~ s/&(nsub|\#8836);/\\ensuremath\{\\not\\subset\}/g;
  573:     $result =~ s/&(sube|\#8838);/\\ensuremath\{\\subseteq\}/g;
  574:     $result =~ s/&(supe|\#8839);/\\ensuremath\{\\supseteq\}/g;
  575:     $result =~ s/&(oplus|\#8853);/\\ensuremath\{\\oplus\}/g;
  576:     $result =~ s/&(otimes|\#8855);/\\ensuremath\{\\otimes\}/g;
  577:     $result =~ s/&(perp|\#8869);/\\ensuremath\{\\perp\}/g;
  578:     $result =~ s/&(sdot|\#8901);/\\ensuremath\{\\cdot\}/g;
  579: #Geometric Shapes (extended HTML 4.01)
  580:     $result =~ s/&(loz|\#9674);/\\ensuremath\{\\Diamond\}/g;
  581: #Miscellaneous Symbols (extended HTML 4.01)
  582:     $result =~ s/&(spades|\#9824);/\\ensuremath\{\\spadesuit\}/g;
  583:     $result =~ s/&(clubs|\#9827);/\\ensuremath\{\\clubsuit\}/g;
  584:     $result =~ s/&(hearts|\#9829);/\\ensuremath\{\\heartsuit\}/g;
  585:     $result =~ s/&(diams|\#9830);/\\ensuremath\{\\diamondsuit\}/g;
  586:     return $result;
  587: }
  588: 
  589: 
  590:                   #width, height, oddsidemargin, evensidemargin, topmargin
  591: my %page_formats=
  592:     ('letter' => {
  593: 	 'book' => {
  594: 	     '1' => [ '7.1 in','9.8 in', '-0.57 in','-0.57 in','0.7 cm'],
  595: 	     '2' => ['3.66 in','9.8 in', '-0.57 in','-0.57 in','0.7 cm']
  596: 	 },
  597: 	 'album' => {
  598: 	     '1' => [ '8.8 in', '6.8 in','-40 pt in',  '-60 pt','1 cm'],
  599: 	     '2' => [ '4.4 in', '6.8 in','-0.5 in', '-1.5 in','3.5 in']
  600: 	 },
  601:      },
  602:      'legal' => {
  603: 	 'book' => {
  604: 	     '1' => ['7.1 in','13 in',,'-0.57 in','-0.57 in','-0.5 in'],
  605: 	     '2' => ['3.16 in','13 in','-0.57 in','-0.57 in','-0.5 in']
  606: 	 },
  607: 	 'album' => {
  608: 	     '1' => ['12 in','7.1 in',,'-0.57 in','-0.57 in','-0.5 in'],
  609:              '2' => ['6.0 in','7.1 in','-1 in','-1 in','5 in']
  610:           },
  611:      },
  612:      'tabloid' => {
  613: 	 'book' => {
  614: 	     '1' => ['9.8 in','16 in','-0.57 in','-0.57 in','-0.5 in'],
  615: 	     '2' => ['4.9 in','16 in','-0.57 in','-0.57 in','-0.5 in']
  616: 	 },
  617: 	 'album' => {
  618: 	     '1' => ['16 in','9.8 in','-0.57 in','-0.57 in','-0.5 in'],
  619: 	     '2' => ['16 in','4.9 in','-0.57 in','-0.57 in','-0.5 in']
  620:           },
  621:      },
  622:      'executive' => {
  623: 	 'book' => {
  624: 	     '1' => ['6.8 in','9 in','-0.57 in','-0.57 in','1.2 in'],
  625: 	     '2' => ['3.1 in','9 in','-0.57 in','-0.57 in','1.2 in']
  626: 	 },
  627: 	 'album' => {
  628: 	     '1' => [],
  629: 	     '2' => []
  630:           },
  631:      },
  632:      'a2' => {
  633: 	 'book' => {
  634: 	     '1' => [],
  635: 	     '2' => []
  636: 	 },
  637: 	 'album' => {
  638: 	     '1' => [],
  639: 	     '2' => []
  640:           },
  641:      },
  642:      'a3' => {
  643: 	 'book' => {
  644: 	     '1' => [],
  645: 	     '2' => []
  646: 	 },
  647: 	 'album' => {
  648: 	     '1' => [],
  649: 	     '2' => []
  650:           },
  651:      },
  652:      'a4' => {
  653: 	 'book' => {
  654: 	     '1' => ['176 mm','272 mm','-40 pt in','-60 pt','-0.5 in'],
  655: 	     '2' => [ '91 mm','272 mm','-40 pt in','-60 pt','-0.5 in']
  656: 	 },
  657: 	 'album' => {
  658: 	     '1' => ['8.5 in','7.7 in','-40 pt in','-60 pt','0 in'],
  659: 	     '2' => ['3.9 in','7.7 in','-40 pt in','-60 pt','0 in']
  660: 	 },
  661:      },
  662:      'a5' => {
  663: 	 'book' => {
  664: 	     '1' => [],
  665: 	     '2' => []
  666: 	 },
  667: 	 'album' => {
  668: 	     '1' => [],
  669: 	     '2' => []
  670:           },
  671:      },
  672:      'a6' => {
  673: 	 'book' => {
  674: 	     '1' => [],
  675: 	     '2' => []
  676: 	 },
  677: 	 'album' => {
  678: 	     '1' => [],
  679: 	     '2' => []
  680:           },
  681:      },
  682:      );
  683: 
  684: sub page_format {
  685: #
  686: #Supported paper format: "Letter [8 1/2x11 in]",      "Legal [8 1/2x14 in]",
  687: #                        "Ledger/Tabloid [11x17 in]", "Executive [7 1/2x10 in]",
  688: #                        "A2 [420x594 mm]",           "A3 [297x420 mm]",
  689: #                        "A4 [210x297 mm]",           "A5 [148x210 mm]",
  690: #                        "A6 [105x148 mm]"
  691: # 
  692:     my ($papersize,$layout,$numberofcolumns) = @_; 
  693:     return @{$page_formats{$papersize}->{$layout}->{$numberofcolumns}};
  694: }
  695: 
  696: 
  697: sub get_name {
  698:     my ($uname,$udom)=@_;
  699:     if (!defined($uname)) { $uname=$env{'user.name'}; }
  700:     if (!defined($udom)) { $udom=$env{'user.domain'}; }
  701:     my $plainname=&Apache::loncommon::plainname($uname,$udom);
  702:     if ($plainname=~/^\s*$/) { $plainname=$uname.'@'.$udom; }
  703:     $plainname=&Apache::lonxml::latex_special_symbols($plainname,'header');
  704:     return $plainname;
  705: }
  706: 
  707: sub get_course {
  708:     my $courseidinfo;
  709:     if (defined($env{'request.course.id'})) {
  710: 	$courseidinfo = &Apache::lonxml::latex_special_symbols(&Apache::lonnet::unescape($env{'course.'.$env{'request.course.id'}.'.description'}),'header');
  711:     }
  712:     return $courseidinfo;
  713: }
  714: 
  715: sub page_format_transformation {
  716:     my ($papersize,$layout,$numberofcolumns,$choice,$text,$assignment,$tableofcontents,$indexlist,$selectionmade) = @_; 
  717:     my ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin);
  718:     if ($selectionmade eq '4') {
  719: 	$assignment='Problems from the Whole Course';
  720:     } else {
  721: 	$assignment=&Apache::lonxml::latex_special_symbols($assignment,'header');
  722:     }
  723:     ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin) = &page_format($papersize,$layout,$numberofcolumns,$topmargin);
  724:     my $name = &get_name();
  725:     my $courseidinfo = &get_course();
  726:     if (defined($courseidinfo)) { $courseidinfo=' - '.$courseidinfo }
  727:     my $topmargintoinsert = '';
  728:     if ($topmargin ne '0') {$topmargintoinsert='\setlength{\topmargin}{'.$topmargin.'}';}
  729:     my $fancypagestatement='';
  730:     if ($numberofcolumns eq '2') {
  731: 	$fancypagestatement="\\fancyhead{}\\fancyhead[LO]{\\textbf{$name} $courseidinfo \\hfill \\thepage \\\\ \\textit{$assignment}}";
  732:     } else {
  733: 	$fancypagestatement="\\rhead{}\\chead{}\\lhead{\\textbf{$name} $courseidinfo \\hfill \\thepage \\\\ \\textit{$assignment}}";
  734:     }
  735:     if ($layout eq 'album') {
  736: 	    $text =~ s/\\begin{document}/\\setlength{\\oddsidemargin}{$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}$fancypagestatement\\begin{document}\\voffset=-0\.8 cm\\setcounter{page}{1}\n /;
  737:     } elsif ($layout eq 'book') {
  738: 	if ($choice ne 'All class print') { 
  739: 	    $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\\begin{document}\n\\voffset=-0\.8 cm\\setcounter{page}{1}\n/;
  740: 	} else {
  741: 	    $text =~ s/\\pagestyle{fancy}\\rhead{}\\chead{}\s*\\begin{document}/\\textheight = $textheight\\oddsidemargin = $evenoffset\n\\evensidemargin = $evenoffset $topmargintoinsert\\textwidth= $textwidth\\newlength{\\minipagewidth}\n\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\\renewcommand{\\ref}{\\keephidden\}\\pagestyle{fancy}\\rhead{}\\chead{}\\begin{document}\\voffset=-0\.8cm\n\\setcounter{page}{1}  \\vskip 5 mm\n /;
  742: 	}
  743: 	if ($papersize eq 'a4') {
  744: 	    $text =~ s/(\\begin{document})/$1\\special{papersize=210mm,297mm}/;
  745: 	}
  746:     }
  747:     if ($tableofcontents eq 'yes') {$text=~s/(\\setcounter\{page\}\{1\})/$1 \\tableofcontents\\newpage /;}
  748:     if ($indexlist eq 'yes') {
  749: 	$text=~s/(\\begin{document})/\\makeindex $1/;
  750: 	$text=~s/(\\end{document})/\\strut\\\\\\strut\\printindex $1/;
  751:     }
  752:     return $text;
  753: }
  754: 
  755: 
  756: sub page_cleanup {
  757:     my $result = shift;	
  758:  
  759:     $result =~ m/\\end{document}(\d*)$/;
  760:     my $number_of_columns = $1;
  761:     my $insert = '{';
  762:     for (my $id=1;$id<=$number_of_columns;$id++) { $insert .='l'; }
  763:     $insert .= '}';
  764:     $result =~ s/(\\begin{longtable})INSERTTHEHEADOFLONGTABLE\\endfirsthead\\endhead/$1$insert/g;
  765:     $result =~ s/&\s*REMOVETHEHEADOFLONGTABLE\\\\/\\\\/g;
  766:     return $result,$number_of_columns;
  767: }
  768: 
  769: 
  770: sub details_for_menu {
  771:     my ($helper)=@_;
  772:     my $postdata=$env{'form.postdata'};
  773:     if (!$postdata) { $postdata=$helper->{VARS}{'postdata'}; }
  774:     my $name_of_resource = &Apache::lonnet::gettitle($postdata);
  775:     my $symbolic = &Apache::lonnet::symbread($postdata);
  776:     my ($map,$id,$resource)=&Apache::lonnet::decode_symb($symbolic);
  777:     $map=&Apache::lonnet::clutter($map);
  778:     my $name_of_sequence = &Apache::lonnet::gettitle($map);
  779:     if ($name_of_sequence =~ /^\s*$/) {
  780: 	$map =~ m|([^/]+)$|;
  781: 	$name_of_sequence = $1;
  782:     }
  783:     my $name_of_map = &Apache::lonnet::gettitle($env{'request.course.uri'});
  784:     if ($name_of_map =~ /^\s*$/) {
  785: 	$env{'request.course.uri'} =~ m|([^/]+)$|;
  786: 	$name_of_map = $1;
  787:     }
  788:     return ($name_of_resource,$name_of_sequence,$name_of_map);
  789: }
  790: 
  791: 
  792: sub latex_corrections {
  793:     my ($number_of_columns,$result,$selectionmade,$answer_mode) = @_;
  794: #    $result =~ s/\\includegraphics{/\\includegraphics\[width=\\minipagewidth\]{/g;
  795:     $result =~ s/\$number_of_columns/$number_of_columns/g;
  796:     if ($selectionmade eq '1' || $answer_mode eq 'only') {
  797: 	$result =~ s/(\\end{document})/\\strut\\vskip 0 mm\\noindent\\makebox\[\\textwidth\/$number_of_columns\]\[b\]{\\hrulefill}\\newline\\noindent\\tiny Printed from LON-CAPA\\copyright MSU{\\hfill} Licensed under GNU General Public License  $1/;
  798:     } else {
  799: 	$result =~ s/(\\end{document})/\\strut\\vspace\*{-4 mm}\\newline\\noindent\\makebox\[\\textwidth\/$number_of_columns\]\[b\]{\\hrulefill}\\newline\\noindent\\tiny Printed from LON-CAPA\\copyright MSU{\\hfill} Licensed under GNU General Public License  $1/;
  800:     }
  801:     $result =~ s/(\\end{longtable}\s*)(\\strut\\newline\\noindent\\makebox\[\\textwidth\/$number_of_columns\]\[b\]{\\hrulefill})/$2$1/g;
  802:     $result =~ s/(\\end{longtable}\s*)\\strut\\newline/$1/g;
  803: #-- LaTeX corrections     
  804:     my $first_comment = index($result,'<!--',0);
  805:     while ($first_comment != -1) {
  806: 	my $end_comment = index($result,'-->',$first_comment);
  807: 	substr($result,$first_comment,$end_comment-$first_comment+3) = '';
  808: 	$first_comment = index($result,'<!--',$first_comment);
  809:     }
  810:     $result =~ s/^\s+$//gm; #remove empty lines
  811:     #removes more than one empty space
  812:     $result =~ s|(\s\s+)|($1=~/[\n\r]/)?"\n":" "|ge;
  813:     $result =~ s/\\\\\s*\\vskip/\\vskip/gm;
  814:     $result =~ s/\\\\\s*\\noindent\s*(\\\\)+/\\\\\\noindent /g;
  815:     $result =~ s/{\\par }\s*\\\\/\\\\/gm;
  816:     $result =~ s/\\\\\s+\[/ \[/g;
  817:     #conversion of html characters to LaTeX equivalents
  818:     if ($result =~ m/&(\w+|#\d+);/) {
  819: 	$result = &character_chart($result);
  820:     }
  821:     $result =~ s/(\\end{tabular})\s*\\vskip 0 mm/$1/g;
  822:     $result =~ s/(\\begin{enumerate})\s*\\noindent/$1/g;
  823:     return $result;
  824: }
  825: 
  826: 
  827: sub index_table {
  828:     my $currentURL = shift;
  829:     my $insex_string='';
  830:     $currentURL=~s/\.([^\/+])$/\.$1\.meta/;
  831:     $insex_string=&Apache::lonnet::metadata($currentURL,'keywords');
  832:     return $insex_string;
  833: }
  834: 
  835: 
  836: sub IndexCreation {
  837:     my ($texversion,$currentURL)=@_;
  838:     my @key_words=split(/,/,&index_table($currentURL));
  839:     my $chunk='';
  840:     my $st=index $texversion,'\addcontentsline{toc}{subsection}{';
  841:     if ($st>0) {
  842: 	for (my $i=0;$i<3;$i++) {$st=(index $texversion,'}',$st+1);}
  843: 	$chunk=substr($texversion,0,$st+1);
  844: 	substr($texversion,0,$st+1)=' ';
  845:     }
  846:     foreach my $key_word (@key_words) {
  847: 	if ($key_word=~/\S+/) {
  848: 	    $texversion=~s/\b($key_word)\b/$1 \\index{$key_word} /i;
  849: 	}
  850:     }			
  851:     if ($st>0) {substr($texversion,0,1)=$chunk;}
  852:     return $texversion;
  853: }
  854: 
  855: sub print_latex_header {
  856:     my $mode=shift;
  857:     my $output='\documentclass[letterpaper,twoside]{article}';
  858:     if (($mode eq 'batchmode') || (!$perm{'pav'})) {
  859: 	$output.='\batchmode';
  860:     }
  861:     $output.='\newcommand{\keephidden}[1]{}\renewcommand{\deg}{$^{\circ}$}'."\n".
  862:    	    '\usepackage{multirow}'."\n".
  863: 	     '\usepackage{longtable}\usepackage{textcomp}\usepackage{makeidx}'."\n".
  864: 	     '\usepackage[dvips]{graphicx}\usepackage{epsfig}'."\n".
  865: 	     '\usepackage{wrapfig}'.
  866: 	     '\usepackage{picins}\usepackage{calc}'."\n".
  867: 	     '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}'."\n".
  868: 	     '\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}'."\n".
  869: 	     '\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}'."\n".
  870: 	     '\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}'."\n".
  871: 	     '\setlength{\abovedisplayshortskip}{-0.04in}'."\n".
  872: 	     '\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'."\n".
  873: 	     '\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large'."\n".
  874: 	     '\textbf{Index}} \newline \setlength{\rightmargin}{0in}'."\n".
  875: 	     '\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}'."\n".
  876: 	     '\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}'."\n".
  877: 	     '\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}'."\n".
  878: 	     '\setlength{\abovedisplayshortskip}{-0.04in}'."\n".
  879: 	     '\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}\begin{document}'."\n";
  880:     return $output;	     
  881: }
  882: 
  883: sub path_to_problem {
  884:     my ($urlp,$colwidth)=@_;
  885:     $urlp=&Apache::lonnet::clutter($urlp);
  886: 
  887:     my $newurlp = '';
  888:     $colwidth=~s/\s*mm\s*$//;
  889: #characters average about 2 mm in width
  890:     if (length($urlp)*2 > $colwidth) {
  891: 	my @elements = split('/',$urlp);
  892: 	my $curlength=0;
  893: 	foreach my $element (@elements) {
  894: 	    if ($element eq '') { next; }
  895: 	    if ($curlength+(length($element)*2) > $colwidth) {
  896: 		$newurlp .=  '|\vskip -1 mm \verb|';
  897: 		$curlength=length($element)*2;
  898: 	    } else {
  899: 		$curlength+=length($element)*2;
  900: 	    }
  901: 	    $newurlp.='/'.$element;
  902: 	}
  903:     } else {
  904: 	$newurlp=$urlp;
  905:     }
  906:     return '{\small\noindent\verb|'.$newurlp.'|\vskip 0 mm}';
  907: }
  908: 
  909: sub recalcto_mm {
  910:     my $textwidth=shift;
  911:     my $LaTeXwidth;
  912:     if ($textwidth=~/(-?\d+\.?\d*)\s*cm/) {
  913: 	$LaTeXwidth = $1*10;
  914:     } elsif ($textwidth=~/(-?\d+\.?\d*)\s*mm/) {
  915: 	$LaTeXwidth = $1;
  916:     } elsif ($textwidth=~/(-?\d+\.?\d*)\s*in/) {
  917: 	$LaTeXwidth = $1*25.4;
  918:     }
  919:     $LaTeXwidth.=' mm';
  920:     return $LaTeXwidth;
  921: }
  922: 
  923: sub get_textwidth {
  924:     my ($helper,$LaTeXwidth)=@_;
  925:     my $textwidth=$LaTeXwidth;
  926:     if ($helper->{'VARS'}->{'pagesize.width'}=~/\d+/ &&
  927: 	$helper->{'VARS'}->{'pagesize.widthunit'}=~/\w+/) {
  928: 	$textwidth=&recalcto_mm($helper->{'VARS'}->{'pagesize.width'}.' '.
  929: 				$helper->{'VARS'}->{'pagesize.widthunit'});
  930:     }
  931:     return $textwidth;
  932: }
  933: 
  934: 
  935: sub unsupported {
  936:     my ($currentURL,$mode,$symb)=@_;
  937:     if ($mode ne '') {$mode='\\'.$mode}
  938:     my $result.= &print_latex_header($mode);
  939:     if ($currentURL=~m|^(/adm/wrapper/)?ext/|) {
  940: 	$currentURL=~s|^(/adm/wrapper/)?ext/|http://|;
  941: 	my $title=&Apache::lonnet::gettitle($symb);
  942: 	$title = &Apache::lonxml::latex_special_symbols($title);
  943: 	$result.=' \strut \\\\ '.$title.' \strut \\\\ '.$currentURL.' ';
  944:     } else {
  945: 	$result.=$currentURL;
  946:     }
  947:     $result.= '\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill} \end{document}';
  948:     return $result;
  949: }
  950: 
  951: 
  952: #
  953: # List of recently generated print files
  954: #
  955: sub recently_generated {
  956:     my $r=shift;
  957:     my $prtspool=$r->dir_config('lonPrtDir');
  958:     my $zip_result;
  959:     my $pdf_result;
  960:     opendir(DIR,$prtspool);
  961: 
  962:     my @files = 
  963: 	grep(/^$env{'user.name'}_$env{'user.domain'}_printout_(\d+)_.*\.(pdf|zip)$/,readdir(DIR));
  964:     closedir(DIR);
  965: 
  966:     @files = sort {
  967: 	my ($actime) = (stat($prtspool.'/'.$a))[10];
  968: 	my ($bctime) = (stat($prtspool.'/'.$b))[10];
  969: 	return $bctime <=> $actime;
  970:     } (@files);
  971: 
  972:     foreach my $filename (@files) {
  973: 	my ($ext) = ($filename =~ m/(pdf|zip)$/);
  974: 	my ($cdev,$cino,$cmode,$cnlink,
  975: 	    $cuid,$cgid,$crdev,$csize,
  976: 	    $catime,$cmtime,$cctime,
  977: 	    $cblksize,$cblocks)=stat($prtspool.'/'.$filename);
  978: 	my $result="<a href='/prtspool/$filename'>".
  979: 	    &mt('Generated [_1] ([_2] bytes)',
  980: 		&Apache::lonlocal::locallocaltime($cctime),$csize).
  981: 		'</a><br />';
  982: 	if ($ext eq 'pdf') { $pdf_result .= $result; }
  983: 	if ($ext eq 'zip') { $zip_result .= $result; }
  984:     }
  985:     if ($zip_result) {
  986: 	$r->print('<h4>'.&mt('Recently generated printout zip files')."</h4>\n"
  987: 		  .$zip_result);
  988:     }
  989:     if ($pdf_result) {
  990: 	$r->print('<h4>'.&mt('Recently generated printouts')."</h4>\n"
  991: 		  .$pdf_result);
  992:     }
  993: }
  994: 
  995: #
  996: #   Retrieve the hash of page breaks.
  997: #
  998: #  Inputs:
  999: #    helper   - reference to helper object.
 1000: #  Outputs
 1001: #    A reference to a page break hash.
 1002: #
 1003: #
 1004: #use Data::Dumper;
 1005: #sub dump_helper_vars {
 1006: #    my ($helper) = @_;
 1007: #    my $helpervars = Dumper($helper->{'VARS'});
 1008: #    &Apache::lonnet::logthis("Dump of helper vars:\n $helpervars");
 1009: #}
 1010: 
 1011: sub get_page_breaks  {
 1012:     my ($helper) = @_;
 1013:     my %page_breaks;
 1014: 
 1015:     foreach my $break (split /\|\|\|/, $helper->{'VARS'}->{'FINISHPAGE'}) {
 1016: 	$page_breaks{$break} = 1;
 1017:     }
 1018:     return %page_breaks;
 1019: }
 1020: 
 1021: sub output_data {
 1022:     my ($r,$helper,$rparmhash) = @_;
 1023:     my %parmhash = %$rparmhash;
 1024:     my $resources_printed = '';
 1025:     my $html=&Apache::lonxml::xmlbegin();
 1026:     my $bodytag=&Apache::loncommon::bodytag('Preparing Printout');
 1027:     $r->print(<<ENDPART);
 1028: $html
 1029: <head>
 1030: <script type="text/javascript" language="Javascript">
 1031:     var editbrowser;
 1032:     function openbrowser(formname,elementname,only,omit) {
 1033:         var url = '/res/?';
 1034:         if (editbrowser == null) {
 1035:             url += 'launch=1&';
 1036:         }
 1037:         url += 'catalogmode=interactive&';
 1038:         url += 'mode=parmset&';
 1039:         url += 'form=' + formname + '&';
 1040:         if (only != null) {
 1041:             url += 'only=' + only + '&';
 1042:         } 
 1043:         if (omit != null) {
 1044:             url += 'omit=' + omit + '&';
 1045:         }
 1046:         url += 'element=' + elementname + '';
 1047:         var title = 'Browser';
 1048:         var options = 'scrollbars=1,resizable=1,menubar=0';
 1049:         options += ',width=700,height=600';
 1050:         editbrowser = open(url,title,options,'1');
 1051:         editbrowser.focus();
 1052:     }
 1053: </script>
 1054: <title>LON-CAPA output for printing</title>
 1055: </head>
 1056: $bodytag
 1057: <p>
 1058: Please stand by while processing your print request, this may take some time ...
 1059: </p>
 1060: ENDPART
 1061: 
 1062: 
 1063: 
 1064:     # fetch the pagebreaks and store them in the course environment
 1065:     # The page breaks will be pulled into the hash %page_breaks which is
 1066:     # indexed by symb and contains 1's for each break.
 1067: 
 1068:     $env{'form.pagebreaks'}  = $helper->{'VARS'}->{'FINISHPAGE'};
 1069:     $env{'form.lastprinttype'} = $helper->{'VARS'}->{'PRINT_TYPE'}; 
 1070:     &Apache::loncommon::store_course_settings('print',
 1071: 					      {'pagebreaks'    => 'scalar',
 1072: 					       'lastprinttype' => 'scalar'});
 1073: 
 1074:     my %page_breaks  = &get_page_breaks($helper);
 1075: 
 1076:     my $format_from_helper = $helper->{'VARS'}->{'FORMAT'};
 1077:     my ($result,$selectionmade) = ('','');
 1078:     my $number_of_columns = 1; #used only for pages to determine the width of the cell
 1079:     my @temporary_array=split /\|/,$format_from_helper;
 1080:     my ($laystyle,$numberofcolumns,$papersize)=@temporary_array;
 1081:     if ($laystyle eq 'L') {
 1082: 	$laystyle='album';
 1083:     } else {
 1084: 	$laystyle='book';
 1085:     }
 1086:     my ($textwidth,$textheight,$oddoffset,$evenoffset) = &page_format($papersize,$laystyle,$numberofcolumns);
 1087:     my $assignment =  $env{'form.assignment'};
 1088:     my $LaTeXwidth=&recalcto_mm($textwidth); 
 1089:     my @print_array=();
 1090:     my @student_names=();
 1091: 
 1092:     #  Common settings for the %form has:
 1093:     # In some cases these settings get overriddent by specific cases, but the
 1094:     # settings are common enough to make it worthwhile factoring them out
 1095:     # here.
 1096:     #
 1097:     my %form;
 1098:     $form{'grade_target'} = 'tex';
 1099:     $form{'textwidth'}    = &get_textwidth($helper, $LaTeXwidth);
 1100: 
 1101:     # If form.showallfoils is set, then request all foils be shown:
 1102:     # privilege will be enforced both by not allowing the 
 1103:     # check box selecting this option to be presnt unless it's ok,
 1104:     # and by lonresponse's priv. check.
 1105:     # The if is here because lonresponse.pm only cares that
 1106:     # showallfoils is defined, not what the value is.
 1107: 
 1108:     if ($helper->{'VARS'}->{'showallfoils'} eq "1") { 
 1109: 	$form{'showallfoils'} = $helper->{'VARS'}->{'showallfoils'};
 1110:     }
 1111: 
 1112:     if ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'current_document') {
 1113:       #-- single document - problem, page, html, xml, ...
 1114: 	my ($currentURL,$cleanURL);
 1115: 
 1116: 	if ($helper->{'VARS'}->{'construction'} ne '1') {
 1117:             #prints published resource
 1118: 	    $currentURL=$helper->{'VARS'}->{'postdata'};
 1119: 	    $cleanURL=&Apache::lonenc::check_decrypt($currentURL);
 1120: 	} else {
 1121:             #prints resource from the construction space
 1122: 	    $currentURL='/'.$helper->{'VARS'}->{'filename'};
 1123: 	    if ($currentURL=~/([^?]+)/) {$currentURL=$1;}
 1124: 	    $cleanURL=$currentURL;
 1125: 	}
 1126: 	$selectionmade = 1;
 1127: 	if ($cleanURL!~m|^/adm/|
 1128: 	    && $cleanURL=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
 1129: 	    my $rndseed=time;
 1130: 	    my $texversion='';
 1131: 	    if ($helper->{'VARS'}->{'ANSWER_TYPE'} ne 'only') {
 1132: 		my %moreenv;
 1133: 		$moreenv{'request.filename'}=$cleanURL;
 1134: 		if ($helper->{'VARS'}->{'style_file'}=~/\w/) {
 1135: 		    $moreenv{'construct.style'}=$helper->{'VARS'}->{'style_file'};
 1136: 		    my $dom = $env{'user.domain'};
 1137: 		    my $user = $env{'user.name'};
 1138: 		    my $put_result = &Apache::lonnet::put('environment',{'construct.style'=>$helper->{'VARS'}->{'style_file'}},$dom,$user);
 1139: 		}
 1140:                 if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {$form{'problemtype'}='exam';}
 1141: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 1142: 		$form{'suppress_tries'}=$parmhash{'suppress_tries'};
 1143: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 1144: 		$form{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
 1145: 		if ($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') {$form{'problem_split'}='yes';}
 1146: 		if ($helper->{'VARS'}->{'curseed'}) {
 1147: 		    $rndseed=$helper->{'VARS'}->{'curseed'};
 1148: 		}
 1149: 		$form{'rndseed'}=$rndseed;
 1150: 		&Apache::lonnet::appenv(%moreenv);
 1151: 
 1152: 		&Apache::lonxml::clear_problem_counter();
 1153: 
 1154: 		$resources_printed .= $currentURL.':';
 1155: 		$texversion.=&Apache::lonnet::ssi($currentURL,%form);
 1156: 
 1157: 		&Apache::lonxml::clear_problem_counter();
 1158: 
 1159: 		&Apache::lonnet::delenv('request.filename');
 1160: 	    }
 1161: 	    # current document with answers.. no need to encap in minipage
 1162: 	    #  since there's only one answer.
 1163: 
 1164: 	    if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 1165: 	       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 1166: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 1167: 		$form{'grade_target'}='answer';
 1168: 		$form{'answer_output_mode'}='tex';
 1169: 		$form{'rndseed'}=$rndseed;
 1170:                 if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {
 1171: 		    $form{'problemtype'}='exam';
 1172: 		}
 1173: 		$resources_printed .= $currentURL.':';
 1174: 		my $answer=&Apache::lonnet::ssi($currentURL,%form);
 1175: 		if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 1176: 		    $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
 1177: 		} else {
 1178: 		    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 1179: 		    if ($helper->{'VARS'}->{'construction'} ne '1') {
 1180: 			$texversion.='\vskip 0 mm \noindent\textbf{'.&Apache::lonnet::gettitle($helper->{'VARS'}->{'symb'}).'}\vskip 0 mm ';
 1181: 			$texversion.=&path_to_problem($cleanURL,$LaTeXwidth);
 1182: 		    } else {
 1183: 			$texversion.='\vskip 0 mm \noindent\textbf{Prints from construction space - there is no title.}\vskip 0 mm ';
 1184: 			my $URLpath=$cleanURL;
 1185: 			$URLpath=~s/~([^\/]+)/public_html\/$1\/$1/;
 1186: 			$texversion.=&path_to_problem ($URLpath,$LaTeXwidth);
 1187: 		    }
 1188: 		    $texversion.='\vskip 1 mm '.$answer.'\end{document}';
 1189: 		}
 1190: 	    }
 1191: 	    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 1192: 		$texversion=&IndexCreation($texversion,$currentURL);
 1193: 	    }
 1194: 	    if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
 1195: 		$texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$currentURL| \\strut\\\\\\strut /;
 1196: 
 1197: 	    }
 1198: 	    $result .= $texversion;
 1199: 	    if ($currentURL=~m/\.page\s*$/) {
 1200: 		($result,$number_of_columns) = &page_cleanup($result);
 1201: 	    }
 1202:         } elsif ($cleanURL!~m|^/adm/|
 1203: 		 && $currentURL=~/\.sequence$/ && $helper->{'VARS'}->{'construction'} eq '1') {
 1204:             #printing content of sequence from the construction space	
 1205: 	    my $flag_latex_header_remove = 'NO'; 
 1206: 	    my $rndseed=time;
 1207: 	    if ($helper->{'VARS'}->{'curseed'}) {
 1208: 		$rndseed=$helper->{'VARS'}->{'curseed'};
 1209: 	    }
 1210: 	    $currentURL=~s|\/~([^\/]+)\/|\/home\/$1\/public_html\/|;
 1211: 	    my $errtext=&Apache::lonratedt::mapread($currentURL);
 1212: 	    for (my $member=0;$member<=$#Apache::lonratedt::order;$member++) {
 1213: 		$Apache::lonratedt::resources[$Apache::lonratedt::order[$member]]=~/^([^:]*):([^:]*):/;
 1214: 		my $urlp=$2;
 1215: 		if ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library|xml|html|htm|xhtml|xhtm)$/) {
 1216: 		    my $texversion='';
 1217: 		    if ($helper->{'VARS'}->{'ANSWER_TYPE'} ne 'only') {
 1218: 			$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 1219: 			$form{'suppress_tries'}=$parmhash{'suppress_tries'};
 1220: 			$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 1221: 			$form{'rndseed'}=$rndseed;
 1222: 			$resources_printed .=$urlp.':';
 1223: 			$texversion=&Apache::lonnet::ssi($urlp,%form);
 1224: 		    }
 1225: 		    if((($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 1226: 		       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) && 
 1227: 		       ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library|page)$/)) {
 1228: 			#  Don't permanently modify %$form...
 1229: 			my %answerform = %form;
 1230: 			$answerform{'grade_target'}='answer';
 1231: 			$answerform{'answer_output_mode'}='tex';
 1232: 			$answerform{'rndseed'}=$rndseed;
 1233: 			$answerform{'problem_split'}=$parmhash{'problem_stream_switch'};
 1234:                         if ($urlp=~/\/res\//) {$env{'request.state'}='published';}
 1235: 			$resources_printed .= $urlp.':';
 1236: 			my $answer=&Apache::lonnet::ssi($urlp,%answerform);
 1237: 			if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 1238: 			    $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
 1239: 			} else {
 1240: 			    # If necessary, encapsulate answer in minipage:
 1241: 
 1242: 			    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 1243: 			    my $body ='\vskip 0 mm \noindent\textbf{'.&Apache::lonnet::gettitle($helper->{'VARS'}->{'symb'}).'}\vskip 0 mm ';
 1244: 			    $body.=&path_to_problem($urlp,$LaTeXwidth);
 1245: 			    $body.='\vskip 1 mm '.$answer.'\end{document}';
 1246: 			    $body = &encapsulate_minipage($body);
 1247: 			    $texversion.=$body;
 1248: 			}
 1249: 		    }
 1250: 		    if ($flag_latex_header_remove ne 'NO') {
 1251: 			$texversion = &latex_header_footer_remove($texversion);
 1252: 		    } else {
 1253: 			$texversion =~ s/\\end{document}//;
 1254: 		    }
 1255: 		    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 1256: 			$texversion=&IndexCreation($texversion,$urlp);
 1257: 		    }
 1258: 		    if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URpL'} eq 'yes') {
 1259: 			$texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$urlp| \\strut\\\\\\strut /;
 1260: 		    }
 1261: 		    $result.=$texversion;
 1262: 		    $flag_latex_header_remove = 'YES';
 1263: 		} elsif ($urlp=~/\.(sequence|page)$/) {
 1264: 		    $result.='\strut\newline\noindent Sequence/page '.$urlp.'\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent ';
 1265: 		}  
 1266: 	    }
 1267: 	    if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\begin{document})/$1 \\fbox\{RANDOM SEED IS $rndseed\} /;}
 1268: 	    $result .= '\end{document}';   
 1269: 	} elsif ($cleanURL=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) { 
 1270: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 1271: 		if ($currentURL=~/\/syllabus$/) {$currentURL=~s/\/res//;}
 1272: 		$resources_printed .= $currentURL.':';
 1273: 		my $texversion=&Apache::lonnet::ssi($currentURL,%form);
 1274: 		$result .= $texversion;
 1275: 	} else {
 1276: 	    $result.=&unsupported($currentURL,$helper->{'VARS'}->{'LATEX_TYPE'},
 1277: 				  $helper->{'VARS'}->{'symb'});
 1278: 	}
 1279:     } elsif (($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems')       or
 1280:              ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems_pages') or
 1281:              ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_problems')       or
 1282: 	     ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_resources')      or # BUGBUG
 1283: 	     ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'select_sequences')) { 
 1284:         #-- produce an output string
 1285: 	if ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems') {
 1286: 	    $selectionmade = 2;
 1287: 	} elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems_pages') {
 1288: 	    $selectionmade = 3;
 1289: 	} elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_problems') {
 1290: 	    $selectionmade = 4;
 1291: 	} elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_resources') {  #BUGBUG
 1292: 	    $selectionmade = 4;
 1293: 	} elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'select_sequences') {
 1294: 	    $selectionmade = 7;
 1295: 	}
 1296: 	$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 1297: 	$form{'suppress_tries'}=$parmhash{'suppress_tries'};
 1298: 	$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 1299: 	$form{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
 1300: 	if ($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') {$form{'problem_split'}='yes';}
 1301: 	my $flag_latex_header_remove = 'NO';
 1302: 	my $flag_page_in_sequence = 'NO';
 1303: 	my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
 1304: 	my $prevassignment='';
 1305: 
 1306: 	&Apache::lonxml::clear_problem_counter();
 1307: 
 1308: 	my $pbreakresources = keys %page_breaks;
 1309: 	for (my $i=0;$i<=$#master_seq;$i++) {
 1310: 
 1311: 	    # Note due to document structure, not allowed to put \newpage
 1312: 	    # prior to the first resource
 1313: 
 1314: 	    if (defined $page_breaks{$master_seq[$i]}) {
 1315: 		if($i != 0) {
 1316: 		    $result.="\\newpage\n";
 1317: 		}
 1318: 	    }
 1319: 	    my ($sequence,undef,$urlp)=&Apache::lonnet::decode_symb($master_seq[$i]);
 1320: 	    $urlp=&Apache::lonnet::clutter($urlp);
 1321: 	    $form{'symb'}=$master_seq[$i];
 1322: 
 1323: 	    my $assignment=&Apache::lonxml::latex_special_symbols(&Apache::lonnet::gettitle($sequence),'header'); #title of the assignment which contains this problem
 1324: 	    if ($selectionmade==7) {$helper->{VARS}->{'assignment'}=$assignment;}
 1325: 	    if ($i==0) {$prevassignment=$assignment;}
 1326: 	    my $texversion='';
 1327: 	    if ($urlp!~m|^/adm/|
 1328: 		&& $urlp=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
 1329: 		$resources_printed .= $urlp.':';
 1330: 
 1331: 		&Apache::lonxml::remember_problem_counter();
 1332: 
 1333: 		$texversion.=&Apache::lonnet::ssi($urlp,%form);
 1334: 		if ($urlp=~/\.page$/) {
 1335: 		    ($texversion,my $number_of_columns_page) = &page_cleanup($texversion);
 1336: 		    if ($number_of_columns_page > $number_of_columns) {$number_of_columns=$number_of_columns_page;} 
 1337: 		    $texversion =~ s/\\end{document}\d*/\\end{document}/;
 1338: 		    $flag_page_in_sequence = 'YES';
 1339: 		} 
 1340: 
 1341: 		if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 1342: 		   ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 1343: 		    #  Don't permanently pervert the %form hash
 1344: 		    my %answerform = %form;
 1345: 		    $answerform{'grade_target'}='answer';
 1346: 		    $answerform{'answer_output_mode'}='tex';
 1347: 		    $resources_printed .= $urlp.':';
 1348: 
 1349: 		    &Apache::lonxml::restore_problem_counter();
 1350: 		    my $answer=&Apache::lonnet::ssi($urlp,%answerform);
 1351: 
 1352: 		    if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 1353: 			$texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
 1354: 		    } else {
 1355: 			if ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library)$/) {
 1356: 			    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 1357: 			    my $body ='\vskip 0 mm \noindent\textbf{'.&Apache::lonnet::gettitle($master_seq[$i]).'}\vskip 0 mm ';
 1358: 			    $body   .= &path_to_problem ($urlp,$LaTeXwidth);
 1359: 			    $body   .='\vskip 1 mm '.$answer;
 1360: 			    $body    = &encapsulate_minipage($body);
 1361: 			    $texversion .= $body;
 1362: 			} else {
 1363: 			    $texversion='';
 1364: 			}
 1365: 		    }
 1366: 		}
 1367: 		if ($flag_latex_header_remove ne 'NO') {
 1368: 		    $texversion = &latex_header_footer_remove($texversion);
 1369: 		} else {
 1370: 		    $texversion =~ s/\\end{document}//;
 1371: 		}
 1372: 		if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 1373: 		    $texversion=&IndexCreation($texversion,$urlp);
 1374: 		}
 1375: 		if (($selectionmade == 4) and ($assignment ne $prevassignment)) {
 1376: 		    my $name = &get_name();
 1377: 		    my $courseidinfo = &get_course();
 1378: 		    if (defined($courseidinfo)) { $courseidinfo=' - '.$courseidinfo }
 1379: 		    $prevassignment=$assignment;
 1380: 		    if ($numberofcolumns eq '1') {
 1381: 			$result .='\newpage \noindent\parbox{\minipagewidth}{\noindent\\lhead{\\textit{\\textbf{'.$name.'}}'.$courseidinfo.' \\hfill \\thepage \\\\ \\textit{'.$assignment.'}}} \vskip 5 mm ';
 1382: 		    } else {
 1383: 			$result .='\newpage \noindent\parbox{\minipagewidth}{\noindent\\fancyhead[LO]{\\textit{\\textbf{'.$name.'}}'.$courseidinfo.' \\hfill \\thepage \\\\ \\textit{'.$assignment.'}}} \vskip 5 mm ';
 1384: 		    }			
 1385: 		}
 1386: 		$result .= $texversion;
 1387: 		$flag_latex_header_remove = 'YES';   
 1388: 	    } elsif ($urlp=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) { 
 1389: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 1390: 		if ($urlp=~/\/syllabus$/) {$urlp=~s/\/res//;}
 1391: 		$resources_printed .= $urlp.':';
 1392: 		my $texversion=&Apache::lonnet::ssi($urlp,%form);
 1393: 		if ($flag_latex_header_remove ne 'NO') {
 1394: 		    $texversion = &latex_header_footer_remove($texversion);
 1395: 		} else {
 1396: 		    $texversion =~ s/\\end{document}/\\vskip 0\.5mm\\noindent\\makebox\[\\textwidth\/\$number_of_columns\]\[b\]\{\\hrulefill\}/;
 1397: 		}
 1398: 		$result .= $texversion;
 1399: 		$flag_latex_header_remove = 'YES'; 
 1400: 	    } else {
 1401: 		$texversion=&unsupported($urlp,$helper->{'VARS'}->{'LATEX_TYPE'},
 1402: 					 $master_seq[$i]);
 1403: 		if ($flag_latex_header_remove ne 'NO') {
 1404: 		    $texversion = &latex_header_footer_remove($texversion);
 1405: 		} else {
 1406: 		    $texversion =~ s/\\end{document}//;
 1407: 		}
 1408: 		$result .= $texversion;
 1409: 		$flag_latex_header_remove = 'YES';   
 1410: 	    }	    
 1411: 	    if (&Apache::loncommon::connection_aborted($r)) { last; }
 1412: 	}
 1413: 	&Apache::lonxml::clear_problem_counter();
 1414: 	if ($flag_page_in_sequence eq 'YES') {
 1415: 	    $result =~ s/\\usepackage{calc}/\\usepackage{calc}\\usepackage{longtable}/;
 1416: 	}	
 1417: 	$result .= '\end{document}';
 1418:      } elsif (($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_for_students') ||
 1419: 	      ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'resources_for_students')){
 1420: 
 1421: 
 1422:      #-- prints assignments for whole class or for selected students  
 1423: 	 my $type;
 1424: 	 if ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_for_students') {
 1425: 	     $selectionmade=5;
 1426: 	     $type='problems';
 1427: 	 } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'resources_for_students') {
 1428: 	     $selectionmade=8;
 1429: 	     $type='resources';
 1430: 	 }
 1431: 	 my @students=split /\|\|\|/, $helper->{'VARS'}->{'STUDENTS'};
 1432: 	 #   The normal sort order is by section then by students within the
 1433: 	 #   section. If the helper var student_sort is 1, then the user has elected
 1434: 	 #   to override this and output the students by name.
 1435: 	 #    Each element of the students array is of the form:
 1436: 	 #       username:domain:section:last, first:status
 1437: 	 #    
 1438: 	 #  Note that student sort is not compatible with printing 
 1439: 	 #  1 section per pdf...so that setting overrides.
 1440: 	 #   
 1441: 	 if (($helper->{'VARS'}->{'student_sort'}    eq 1)  && 
 1442: 	     ($helper->{'VARS'}->{'SPLIT_PDFS'} ne "sections")) {
 1443: 	     @students = sort compare_names  @students;
 1444: 	 }
 1445: 	 &adjust_number_to_print($helper);
 1446: 
 1447:          if ($helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq '0' ||
 1448: 	     $helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq 'all' ) {
 1449: 	     $helper->{'VARS'}->{'NUMBER_TO_PRINT'}=$#students+1;
 1450: 	 }
 1451: 	 # If we are splitting on section boundaries, we need 
 1452: 	 # to remember that in split_on_sections and 
 1453: 	 # print all of the students in the list.
 1454: 	 #
 1455: 	 my $split_on_sections = 0;
 1456: 	 if ($helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq 'section') {
 1457: 	     $split_on_sections = 1;
 1458: 	     $helper->{'VARS'}->{'NUMBER_TO_PRINT'} = $#students+1;
 1459: 	 }
 1460: 	 my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
 1461: 
 1462: 	 #loop over students
 1463: 	 my $flag_latex_header_remove = 'NO'; 
 1464: 	 my %moreenv;
 1465:          $moreenv{'instructor_comments'}='hide';
 1466: 	 $moreenv{'textwidth'}=&get_textwidth($helper,$LaTeXwidth);
 1467: 	 $moreenv{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
 1468: 	 $moreenv{'problem_split'}    = $parmhash{'problem_stream_switch'};
 1469: 	 $moreenv{'suppress_tries'}   = $parmhash{'suppress_tries'};
 1470: 	 if ($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') {$moreenv{'problem_split'}='yes';}
 1471: 	 my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Print Status','Class Print Status',$#students+1,'inline','75');
 1472: 	 my $student_counter=-1;
 1473: 	 my $i = 0;
 1474: 	 my ($junku, $junkd, $last_section) = split /:/,$students[0];
 1475: 	 foreach my $person (@students) {
 1476: 
 1477:              my $duefile="/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
 1478: 	     if (-e $duefile) {
 1479: 		 my $temp_file = Apache::File->new('>>'.$duefile);
 1480: 		 print $temp_file "1969\n";
 1481: 	     }
 1482: 	     $student_counter++;
 1483: 	     if ($split_on_sections) {
 1484: 		 my $this_section;
 1485: 		 ($junku, $junkd, $this_section) = split /:/,$person;
 1486: 		 if ($this_section ne $last_section) {
 1487: 		     $i++;
 1488: 		     $last_section = $this_section;
 1489: 		 }
 1490: 	     } else {
 1491: 		 $i=int($student_counter/$helper->{'VARS'}{'NUMBER_TO_PRINT'});
 1492: 	     }
 1493: 	     my ($output,$fullname, $printed)=&print_resources($r,$helper,
 1494: 						     $person,$type,
 1495: 						     \%moreenv,\@master_seq,
 1496: 						     $flag_latex_header_remove,
 1497: 						     $LaTeXwidth);
 1498: 	     $resources_printed .= ":";
 1499: 	     $print_array[$i].=$output;
 1500: 	     $student_names[$i].=$person.':'.$fullname.'_END_';
 1501: 	     &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,&mt('last student').' '.$fullname);
 1502: 	     $flag_latex_header_remove = 'YES';
 1503: 	     if (&Apache::loncommon::connection_aborted($r)) { last; }
 1504: 	 }
 1505: 	 &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
 1506: 	 $result .= $print_array[0].'  \end{document}';
 1507:      } elsif (($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_for_anon')     ||
 1508: 	      ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'resources_for_anon')  ) { 
 1509: 	 my $cdom =$env{'course.'.$env{'request.course.id'}.'.domain'};
 1510: 	 my $cnum =$env{'course.'.$env{'request.course.id'}.'.num'};
 1511: 	 my $num_todo=$helper->{'VARS'}->{'NUMBER_TO_PRINT_TOTAL'};
 1512: 	 my $code_name=$helper->{'VARS'}->{'ANON_CODE_STORAGE_NAME'};
 1513: 	 my $old_name=$helper->{'VARS'}->{'REUSE_OLD_CODES'};
 1514: 	 my $single_code = $helper->{'VARS'}->{'SINGLE_CODE'};
 1515: 	 my $selected_code = $helper->{'VARS'}->{'CODE_SELECTED_FROM_LIST'};
 1516: 
 1517: 	 my $code_option=$helper->{'VARS'}->{'CODE_OPTION'};
 1518: 	 open(FH,$Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
 1519: 	 my ($code_type,$code_length)=('letter',6);
 1520: 	 foreach my $line (<FH>) {
 1521: 	     my ($name,$type,$length) = (split(/:/,$line))[0,2,4];
 1522: 	     if ($name eq $code_option) {
 1523: 		 $code_length=$length;
 1524: 		 if ($type eq 'number') { $code_type = 'number'; }
 1525: 	     }
 1526: 	 }
 1527: 	 my %moreenv = ('textwidth' => &get_textwidth($helper,$LaTeXwidth));
 1528: 	 $moreenv{'problem_split'}    = $parmhash{'problem_stream_switch'};
 1529:          $moreenv{'instructor_comments'}='hide';
 1530: 	 my $seed=time+($$<<16)+($$);
 1531: 	 my @allcodes;
 1532: 	 if ($old_name) {
 1533: 	     my %result=&Apache::lonnet::get('CODEs',
 1534: 					     [$old_name,"type\0$old_name"],
 1535: 					     $cdom,$cnum);
 1536: 	     $code_type=$result{"type\0$old_name"};
 1537: 	     @allcodes=split(',',$result{$old_name});
 1538: 	     $num_todo=scalar(@allcodes);
 1539: 	 } elsif ($selected_code) { # Selection value is always numeric.
 1540: 	     $num_todo = 1;
 1541: 	     @allcodes = ($selected_code);
 1542: 	 } elsif ($single_code) {
 1543: 
 1544: 	     $num_todo    = 1;	# Unconditionally one code to do.
 1545: 	     # If an alpha code have to convert to numbers so it can be
 1546: 	     # converted back to letters again :-)
 1547: 	     #
 1548: 	     if ($code_type ne 'number') {
 1549: 		 $single_code = &letters_to_num($single_code);
 1550: 	     }
 1551: 	     @allcodes = ($single_code);
 1552: 	 } else {
 1553: 	     my %allcodes;
 1554: 	     srand($seed);
 1555: 	     for (my $i=0;$i<$num_todo;$i++) {
 1556: 		 $moreenv{'CODE'}=&get_CODE(\%allcodes,$i,$seed,$code_length,
 1557: 					    $code_type);
 1558: 	     }
 1559: 	     if ($code_name) {
 1560: 		 &Apache::lonnet::put('CODEs',
 1561: 				      {
 1562: 					$code_name =>join(',',keys(%allcodes)),
 1563: 					"type\0$code_name" => $code_type
 1564: 				      },
 1565: 				      $cdom,$cnum);
 1566: 	     }
 1567: 	     @allcodes=keys(%allcodes);
 1568: 	 }
 1569: 	 my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
 1570: 	 my ($type) = split(/_/,$helper->{'VARS'}->{'PRINT_TYPE'});
 1571: 	 my $number_per_page=$helper->{'VARS'}->{'NUMBER_TO_PRINT'};
 1572: 	 if ($number_per_page eq '0' || $number_per_page eq 'all') {
 1573: 	     $number_per_page=$num_todo;
 1574: 	 }
 1575: 	 my $flag_latex_header_remove = 'NO'; 
 1576: 	 my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Print Status','Class Print Status',$num_todo,'inline','75');
 1577: 	 my $count=0;
 1578: 	 foreach my $code (sort(@allcodes)) {
 1579: 	     my $file_num=int($count/$number_per_page);
 1580: 	     if ($code_type eq 'number') { 
 1581: 		 $moreenv{'CODE'}=$code;
 1582: 	     } else {
 1583: 		 $moreenv{'CODE'}=&num_to_letters($code);
 1584: 	     }
 1585: 	     my ($output,$fullname, $printed)=
 1586: 		 &print_resources($r,$helper,'anonymous',$type,\%moreenv,
 1587: 				  \@master_seq,$flag_latex_header_remove,
 1588: 				  $LaTeXwidth);
 1589: 	     $resources_printed .= ":";
 1590: 	     $print_array[$file_num].=$output;
 1591: 	     &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
 1592: 				       &mt('last assignment').' '.$fullname);
 1593: 	     $flag_latex_header_remove = 'YES';
 1594: 	     $count++;
 1595: 	     if (&Apache::loncommon::connection_aborted($r)) { last; }
 1596: 	 }
 1597: 	 &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
 1598: 	 $result .= $print_array[0].'  \end{document}';
 1599:      } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_from_directory') {      
 1600:     #prints selected problems from the subdirectory 
 1601: 	$selectionmade = 6;
 1602:         my @list_of_files=split /\|\|\|/, $helper->{'VARS'}->{'FILES'};
 1603: 	@list_of_files=sort @list_of_files;
 1604: 	my $flag_latex_header_remove = 'NO'; 
 1605: 	my $rndseed=time;
 1606: 	if ($helper->{'VARS'}->{'curseed'}) {
 1607: 	    $rndseed=$helper->{'VARS'}->{'curseed'};
 1608: 	}
 1609: 	for (my $i=0;$i<=$#list_of_files;$i++) {
 1610: 	    my $urlp = $list_of_files[$i];
 1611: 	    $urlp=~s|//|/|;
 1612: 	    if ($urlp=~/\//) {
 1613: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 1614: 		$form{'rndseed'}=$rndseed;
 1615: 		if ($urlp =~ m|/home/([^/]+)/public_html|) {
 1616: 		    $urlp =~ s|/home/([^/]*)/public_html|/~$1|;
 1617: 		} else {
 1618: 		    $urlp =~ s|^$Apache::lonnet::perlvar{'lonDocRoot'}||;
 1619: 		}
 1620: 		$resources_printed .= $urlp.':';
 1621: 		my $texversion=&Apache::lonnet::ssi($urlp,%form);
 1622: 		if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 1623: 		   ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 1624: 		    #  Don't permanently pervert %form:
 1625: 		    my %answerform = %form;
 1626: 		    $answerform{'grade_target'}='answer';
 1627: 		    $answerform{'answer_output_mode'}='tex';
 1628: 		    $answerform{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 1629: 		    $answerform{'rndseed'}=$rndseed;
 1630: 		    $resources_printed .= $urlp.':';
 1631: 		    my $answer=&Apache::lonnet::ssi($urlp,%answerform);
 1632: 		    if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 1633: 			$texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
 1634: 		    } else {
 1635: 			$texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 1636: 			if ($helper->{'VARS'}->{'construction'} ne '1') {
 1637: 			    $texversion.='\vskip 0 mm \noindent ';
 1638: 			    $texversion.=&path_to_problem ($urlp,$LaTeXwidth);
 1639: 			} else {
 1640: 			    $texversion.='\vskip 0 mm \noindent\textbf{Prints from construction space - there is no title.}\vskip 0 mm ';
 1641: 			    my $URLpath=$urlp;
 1642: 			    $URLpath=~s/~([^\/]+)/public_html\/$1\/$1/;
 1643: 			    $texversion.=&path_to_problem ($URLpath,$LaTeXwidth);
 1644: 			}
 1645: 			$texversion.='\vskip 1 mm '.$answer.'\end{document}';
 1646: 		    }
 1647: 		}
 1648:                 #this chunck is responsible for printing the path to problem
 1649: 		my $newurlp=$urlp;
 1650: 		if ($newurlp=~/~/) {$newurlp=~s|\/~([^\/]+)\/|\/home\/$1\/public_html\/|;}
 1651: 		$newurlp=&path_to_problem($newurlp,$LaTeXwidth);
 1652: 		$texversion =~ s/(\\begin{minipage}{\\textwidth})/$1 $newurlp/;
 1653: 		if ($flag_latex_header_remove ne 'NO') {
 1654: 		    $texversion = &latex_header_footer_remove($texversion);
 1655: 		} else {
 1656: 		    $texversion =~ s/\\end{document}//;
 1657: 		}
 1658: 		if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 1659: 		    $texversion=&IndexCreation($texversion,$urlp);
 1660: 		}
 1661: 		if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
 1662: 		    $texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$urlp| \\strut\\\\\\strut /;
 1663: 		    
 1664: 		}
 1665: 		$result .= $texversion;
 1666: 	    }
 1667: 	    $flag_latex_header_remove = 'YES';  
 1668: 	}
 1669: 	if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\typeout)/ RANDOM SEED IS $rndseed $1/;}
 1670: 	$result .= '\end{document}';      	
 1671:     }
 1672: #-------------------------------------------------------- corrections for the different page formats
 1673:     $result = &page_format_transformation($papersize,$laystyle,$numberofcolumns,$helper->{'VARS'}->{'PRINT_TYPE'},$result,$helper->{VARS}->{'assignment'},$helper->{'VARS'}->{'TABLE_CONTENTS'},$helper->{'VARS'}->{'TABLE_INDEX'},$selectionmade);
 1674:     $result = &latex_corrections($number_of_columns,$result,$selectionmade,
 1675: 				 $helper->{'VARS'}->{'ANSWER_TYPE'});
 1676:     for (my $i=1;$i<=$#print_array;$i++) {
 1677: 	$print_array[$i] = 
 1678: 	    &latex_corrections($number_of_columns,$print_array[$i],
 1679: 			       $selectionmade, 
 1680: 			       $helper->{'VARS'}->{'ANSWER_TYPE'});
 1681:     }
 1682:     #changes page's parameters for the one column output 
 1683:     if ($numberofcolumns == 1) {
 1684: 	$result =~ s/\\textwidth\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\textwidth= $helper->{'VARS'}->{'pagesize.width'} $helper->{'VARS'}->{'pagesize.widthunit'} /;
 1685: 	$result =~ s/\\textheight\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\textheight $helper->{'VARS'}->{'pagesize.height'} $helper->{'VARS'}->{'pagesize.heightunit'} /;
 1686: 	$result =~ s/\\evensidemargin\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\evensidemargin= $helper->{'VARS'}->{'pagesize.lmargin'} $helper->{'VARS'}->{'pagesize.lmarginunit'} /;
 1687: 	$result =~ s/\\oddsidemargin\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\oddsidemargin= $helper->{'VARS'}->{'pagesize.lmargin'} $helper->{'VARS'}->{'pagesize.lmarginunit'} /;
 1688:     }
 1689: 
 1690: #-- writing .tex file in prtspool 
 1691:     my $temp_file;
 1692:     my $identifier = &Apache::loncommon::get_cgi_id();
 1693:     my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout_$identifier.tex";
 1694:     if (!($#print_array>0)) { 
 1695: 	unless ($temp_file = Apache::File->new('>'.$filename)) {
 1696: 	    $r->log_error("Couldn't open $filename for output $!");
 1697: 	    return SERVER_ERROR; 
 1698: 	}
 1699: 	print $temp_file $result;
 1700: 	my $begin=index($result,'\begin{document}',0);
 1701: 	my $inc=substr($result,0,$begin+16);
 1702:     } else {
 1703: 	my $begin=index($result,'\begin{document}',0);
 1704: 	my $inc=substr($result,0,$begin+16);
 1705:         for (my $i=0;$i<=$#print_array;$i++) {
 1706: 	    if ($i==0) {
 1707: 		$print_array[$i]=$result;
 1708: 	    } else {
 1709: 		my $anobegin=index($print_array[$i],'\setcounter{page}',0);
 1710: 		substr($print_array[$i],0,$anobegin)='';
 1711: 		$print_array[$i]=$inc.$print_array[$i].'\end{document}';
 1712: 	    }
 1713: 	    my $temp_file;
 1714: 	    my $newfilename=$filename;
 1715: 	    my $num=$i+1;
 1716: 	    $newfilename =~s/\.tex$//; 
 1717: 	    $newfilename=sprintf("%s_%03d.tex",$newfilename, $num);
 1718: 	    unless ($temp_file = Apache::File->new('>'.$newfilename)) {
 1719: 		$r->log_error("Couldn't open $newfilename for output $!");
 1720: 		return SERVER_ERROR; 
 1721: 	    }
 1722: 	    print $temp_file $print_array[$i];
 1723: 	}
 1724:     }
 1725:     my $student_names='';
 1726:     if ($#print_array>0) {
 1727: 	for (my $i=0;$i<=$#print_array;$i++) {
 1728: 	    $student_names.=$student_names[$i].'_ENDPERSON_';
 1729: 	}
 1730:     } else {
 1731: 	if ($#student_names>-1) {
 1732: 	    $student_names=$student_names[0].'_ENDPERSON_';
 1733: 	} else {
 1734: 	    my $fullname = &get_name($env{'user.name'},$env{'user.domain'});
 1735: 	    $student_names=join(':',$env{'user.name'},$env{'user.domain'},
 1736: 				$env{'request.course.sec'},$fullname).
 1737: 				    '_ENDPERSON_'.'_END_';
 1738: 	}
 1739:     }
 1740: 
 1741:     my $URLback=''; #link to original document
 1742:     if ($helper->{'VARS'}->{'construction'} ne '1') {
 1743: 	#prints published resource
 1744: 	$URLback=&Apache::lonnet::escape('/adm/flip?postdata=return:');
 1745:     } else {
 1746: 	#prints resource from the construction space
 1747: 	$URLback='/'.$helper->{'VARS'}->{'filename'};
 1748: 	if ($URLback=~/([^?]+)/) {
 1749: 	    $URLback=$1;
 1750: 	    $URLback=~s|^/~|/priv/|;
 1751: 	}
 1752:     }
 1753:     # logic for now is too complex to trace if this has been defined
 1754:     #  yet.
 1755:     my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 1756:     my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 1757:     &Apache::lonnet::appenv('cgi.'.$identifier.'.file'   => $filename,
 1758:                             'cgi.'.$identifier.'.layout'  => $laystyle,
 1759:                             'cgi.'.$identifier.'.numcol'  => $numberofcolumns,
 1760: 			    'cgi.'.$identifier.'.paper'  => $papersize,
 1761:                             'cgi.'.$identifier.'.selection' => $selectionmade,
 1762: 			    'cgi.'.$identifier.'.tableofcontents' => $helper->{'VARS'}->{'TABLE_CONTENTS'},
 1763: 			    'cgi.'.$identifier.'.tableofindex' => $helper->{'VARS'}->{'TABLE_INDEX'},
 1764: 			    'cgi.'.$identifier.'.role' => $perm{'pav'},
 1765:                             'cgi.'.$identifier.'.numberoffiles' => $#print_array,
 1766:                             'cgi.'.$identifier.'.studentnames' => $student_names,
 1767:                             'cgi.'.$identifier.'.backref' => $URLback,);
 1768:     &Apache::lonnet::appenv("cgi.$identifier.user"    => $env{'user.name'},
 1769: 			    "cgi.$identifier.domain"  => $env{'user.domain'},
 1770: 			    "cgi.$identifier.courseid" => $cnum, 
 1771: 			    "cgi.$identifier.coursedom" => $cdom, 
 1772: 			    "cgi.$identifier.resources" => $resources_printed);
 1773: 
 1774: $r->print(<<FINALEND);
 1775: <br />
 1776: <meta http-equiv="Refresh" content="0; url=/cgi-bin/printout.pl?$identifier" />
 1777: <a href="/cgi-bin/printout.pl?$identifier">Continue</a>
 1778: </body>
 1779: </html>
 1780: FINALEND
 1781: }
 1782: 
 1783: 
 1784: sub get_CODE {
 1785:     my ($all_codes,$num,$seed,$size,$type)=@_;
 1786:     my $max='1'.'0'x$size;
 1787:     my $newcode;
 1788:     while(1) {
 1789: 	$newcode=sprintf("%0".$size."d",int(rand($max)));
 1790: 	if (!exists($$all_codes{$newcode})) {
 1791: 	    $$all_codes{$newcode}=1;
 1792: 	    if ($type eq 'number' ) {
 1793: 		return $newcode;
 1794: 	    } else {
 1795: 		return &num_to_letters($newcode);
 1796: 	    }
 1797: 	}
 1798:     }
 1799: }
 1800: 
 1801: sub print_resources {
 1802:     my ($r,$helper,$person,$type,$moreenv,$master_seq,$remove_latex_header,
 1803: 	$LaTeXwidth)=@_;
 1804:     my $current_output = ''; 
 1805:     my $printed = '';
 1806:     my ($username,$userdomain,$usersection) = split /:/,$person;
 1807:     my $fullname = &get_name($username,$userdomain);
 1808:     my $namepostfix;
 1809:     if ($person =~ 'anon') {
 1810: 	$namepostfix="\\\\Name: ";
 1811: 	$fullname = "CODE - ".$moreenv->{'CODE'};
 1812:     }
 1813:     my $i           = 0;
 1814:     #goes through all resources, checks if they are available for 
 1815:     #current student, and produces output   
 1816: 
 1817:     &Apache::lonxml::clear_problem_counter();
 1818:     my %page_breaks  = &get_page_breaks($helper);
 1819:     my @format_array = split(/\|/,$helper->{'VARS'}->{'FORMAT'});
 1820:     my $columns_in_format = $format_array[1];
 1821: 
 1822:     foreach my $curresline (@{$master_seq})  {
 1823: 	if (defined $page_breaks{$curresline}) {
 1824: 	    if($i != 0) {
 1825: 		$current_output.= "\\newpage\n";
 1826: 	    }
 1827: 	}
 1828: 	$i++;
 1829: 	if ( !($type eq 'problems' && 
 1830: 	       ($curresline!~ m/\.(problem|exam|quiz|assess|survey|form|library)$/)) ) {
 1831: 	    my ($map,$id,$res_url) = &Apache::lonnet::decode_symb($curresline);
 1832: 	    if (&Apache::lonnet::allowed('bre',$res_url)) {
 1833: 		if ($res_url!~m|^ext/|
 1834: 		    && $res_url=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
 1835: 		    $printed .= $curresline.':';
 1836: 
 1837: 		    &Apache::lonxml::remember_problem_counter();    
 1838: 
 1839: 		    my $rendered = &Apache::loncommon::get_student_view($curresline,$username,$userdomain,$env{'request.course.id'},'tex',$moreenv);
 1840: 
 1841: 		    if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 1842: 		       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 1843: 			#   Use a copy of the hash so we don't pervert it on future loop passes.
 1844: 			my %answerenv = %{$moreenv};
 1845: 			$answerenv{'answer_output_mode'}='tex';
 1846: 			$answerenv{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 1847: 			
 1848: 			&Apache::lonxml::restore_problem_counter();
 1849: 
 1850: 			my $ansrendered = &Apache::loncommon::get_student_answers($curresline,$username,$userdomain,$env{'request.course.id'},%answerenv);
 1851: 
 1852: 			if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 1853: 			    $rendered=~s/(\\keephidden{ENDOFPROBLEM})/$ansrendered$1/;
 1854: 			} else {
 1855: 
 1856: 			    
 1857: 			    my $header =&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 1858: 			    my $body   ='\vskip 0 mm \noindent\textbf{'.&Apache::lonnet::gettitle($curresline).'}\vskip 0 mm ';
 1859: 			    $body     .=&path_to_problem($res_url,$LaTeXwidth);			    
 1860: 			    $body     .='\vskip 1 mm '.$ansrendered;
 1861: 			    $body     = &encapsulate_minipage($body);
 1862: 			    $rendered = $header.$body;
 1863: 			}
 1864: 		    }
 1865: 		    if ($remove_latex_header eq 'YES') {
 1866: 			$rendered = &latex_header_footer_remove($rendered);
 1867: 		    } else {
 1868: 			$rendered =~ s/\\end{document}//;
 1869: 		    }
 1870: 		    $current_output .= $rendered;		    
 1871: 		} elsif ($res_url=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) {
 1872: 		    $printed .= $curresline.':';
 1873: 		    my $rendered = &Apache::loncommon::get_student_view($curresline,$username,$userdomain,$env{'request.course.id'},'tex',$moreenv);
 1874: 
 1875: 		    if ($remove_latex_header eq 'YES') {
 1876: 			$rendered = &latex_header_footer_remove($rendered);
 1877: 		    } else {
 1878: 			$rendered =~ s/\\end{document}//;
 1879: 		    }
 1880: 		    $current_output .= $rendered.'\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\strut \vskip 0 mm \strut ';
 1881: 
 1882: 		} else {
 1883: 		    my $rendered = &unsupported($res_url,$helper->{'VARS'}->{'LATEX_TYPE'},$curresline);
 1884: 		    if ($remove_latex_header ne 'NO') {
 1885: 			$rendered = &latex_header_footer_remove($rendered);
 1886: 		    } else {
 1887: 			$rendered =~ s/\\end{document}//;
 1888: 		    }
 1889: 		    $current_output .= $rendered;
 1890: 		}
 1891: 	    }
 1892: 	    $remove_latex_header = 'YES';
 1893: 	}
 1894: 	if (&Apache::loncommon::connection_aborted($r)) { last; }
 1895:     }
 1896:     my $courseidinfo = &get_course();
 1897:     if (defined($courseidinfo)) { $courseidinfo=' - '.$courseidinfo }
 1898:     if ($usersection ne '') {$courseidinfo.=' - Sec. '.$usersection}
 1899:     my $currentassignment=&Apache::lonxml::latex_special_symbols($helper->{VARS}->{'assignment'},'header');
 1900:     if ($current_output=~/\\documentclass/) {
 1901: 	if ($columns_in_format == 1) {
 1902: 	    $current_output =~ s/\\begin{document}/\\setlength{\\topmargin}{1cm} \\begin{document}\\noindent\\parbox{\\minipagewidth}{\\noindent\\lhead{\\textit{\\textbf{$fullname}}$courseidinfo \\hfill \\thepage \\\\ \\textit{$currentassignment}$namepostfix}}\\vskip 5 mm /;
 1903: 	} else {
 1904: 	    	    $current_output =~ s/\\begin{document}/\\setlength{\\topmargin}{1cm} \\begin{document}\\noindent\\parbox{\\minipagewidth}{\\noindent\\fancyhead[LO]{\\textit{\\textbf{$fullname}}$courseidinfo \\hfill \\thepage \\\\ \\textit{$currentassignment}$namepostfix}}\\vskip 5 mm /;
 1905: 
 1906: 	}
 1907:     } else {
 1908: 	my $blankpages = '';
 1909: 	for (my $j=0;$j<$helper->{'VARS'}->{'EMPTY_PAGES'};$j++) {$blankpages.='\clearpage\strut\clearpage';}
 1910: 	if ($columns_in_format == 1) {
 1911: 	    $current_output = '\strut\vspace*{-6 mm}\\newline\\noindent\\makebox[\\textwidth/$number_of_columns][b]{\\hrulefill}\vspace*{-2 mm}\\newline\\noindent{\\tiny Printed from LON-CAPA\\copyright MSU{\\hfill} Licensed under GNU General Public License }\\newpage '.$blankpages.'\setcounter{page}{1}\noindent\parbox{\minipagewidth}{\noindent\\lhead{\\textit{\\textbf{'.$fullname.'}}'.$courseidinfo.' \\hfill \\thepage \\\\ \\textit{'.$currentassignment.'}'.$namepostfix.'}} \vskip 5 mm '.$current_output;
 1912: 	} else {
 1913: 	   $current_output = '\strut\vspace*{-6 mm}\\newline\\noindent\\makebox[\\textwidth/$number_of_columns][b]{\\hrulefill}\vspace*{-2 mm}\\newline\\noindent{\\tiny Printed from LON-CAPA\\copyright MSU{\\hfill} Licensed under GNU General Public License }\\newpage '.$blankpages.'\setcounter{page}{1}\noindent\parbox{\minipagewidth}{\noindent\\fancyhead[LO]{\\textit{\\textbf{'.$fullname.'}}'.$courseidinfo.' \\hfill \\thepage \\\\ \\textit{'.$currentassignment.'}'.$namepostfix.'}} \vskip 5 mm '.$current_output;
 1914: 	}
 1915:     }
 1916:     return ($current_output,$fullname, $printed);
 1917: 
 1918: }
 1919: 
 1920: sub handler {
 1921: 
 1922:     my $r = shift;
 1923:     
 1924:     &init_perm();
 1925: 
 1926: 
 1927: 
 1928:     my $helper = printHelper($r);
 1929:     if (!ref($helper)) {
 1930: 	return $helper;
 1931:     }
 1932:    
 1933: 
 1934:     my %parmhash=&Apache::lonnet::coursedescription($env{'request.course.id'});
 1935:  
 1936: 
 1937: 
 1938: 
 1939:     #  If a figure conversion queue file exists for this user.domain
 1940:     # we delete it since it can only be bad (if it were good, printout.pl
 1941:     # would have deleted it the last time around.
 1942: 
 1943:     my $conversion_queuefile = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
 1944:     if(-e $conversion_queuefile) {
 1945: 	unlink $conversion_queuefile;
 1946:     }
 1947:     &output_data($r,$helper,\%parmhash);
 1948:     return OK;
 1949: } 
 1950: 
 1951: use Apache::lonhelper;
 1952: 
 1953: sub addMessage {
 1954:     my $text = shift;
 1955:     my $paramHash = Apache::lonhelper::getParamHash();
 1956:     $paramHash->{MESSAGE_TEXT} = $text;
 1957:     Apache::lonhelper::message->new();
 1958: }
 1959: 
 1960: 
 1961: 
 1962: sub init_perm {
 1963:     undef(%perm);
 1964:     $perm{'pav'}=&Apache::lonnet::allowed('pav',$env{'request.course.id'});
 1965:     if (!$perm{'pav'}) {
 1966: 	$perm{'pav'}=&Apache::lonnet::allowed('pav',
 1967: 		  $env{'request.course.id'}.'/'.$env{'request.course.sec'});
 1968:     }
 1969:     $perm{'pfo'}=&Apache::lonnet::allowed('pav',$env{'request.course.id'});
 1970:     if (!$perm{'pfo'}) {
 1971: 	$perm{'pfo'}=&Apache::lonnet::allowed('pfo',
 1972: 		  $env{'request.course.id'}.'/'.$env{'request.course.sec'});
 1973:     }
 1974: }
 1975: 
 1976: sub printHelper {
 1977:     my $r = shift;
 1978: 
 1979:     if ($r->header_only) {
 1980:         if ($env{'browser.mathml'}) {
 1981:             &Apache::loncommon::content_type($r,'text/xml');
 1982:         } else {
 1983:             &Apache::loncommon::content_type($r,'text/html');
 1984:         }
 1985:         $r->send_http_header;
 1986:         return OK;
 1987:     }
 1988: 
 1989:     # Send header, nocache
 1990:     if ($env{'browser.mathml'}) {
 1991:         &Apache::loncommon::content_type($r,'text/xml');
 1992:     } else {
 1993:         &Apache::loncommon::content_type($r,'text/html');
 1994:     }
 1995:     &Apache::loncommon::no_cache($r);
 1996:     $r->send_http_header;
 1997:     $r->rflush();
 1998: 
 1999:     # Unfortunately, this helper is so complicated we have to
 2000:     # write it by hand
 2001: 
 2002:     Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING});
 2003:     
 2004:     my $helper = Apache::lonhelper::helper->new("Printing Helper");
 2005:     $helper->declareVar('symb');
 2006:     $helper->declareVar('postdata');    
 2007:     $helper->declareVar('curseed'); 
 2008:     $helper->declareVar('probstatus');   
 2009:     $helper->declareVar('filename');
 2010:     $helper->declareVar('construction');
 2011:     $helper->declareVar('assignment');
 2012:     $helper->declareVar('style_file');
 2013:     $helper->declareVar('student_sort');
 2014:     $helper->declareVar('FINISHPAGE');
 2015:     $helper->declareVar('PRINT_TYPE');
 2016:     $helper->declareVar("showallfoils");
 2017: 
 2018:     #  The page breaks can get loaded initially from the course environment:
 2019:     # But we only do this in the initial state so that they are allowed to change.
 2020:     #
 2021: 
 2022:     # $helper->{VARS}->{FINISHPAGE} = '';
 2023:     
 2024:     &Apache::loncommon::restore_course_settings('print',
 2025: 						{'pagebreaks'  => 'scalar',
 2026: 					         'lastprinttype' => 'scalar'});
 2027:     
 2028:     
 2029:     if($helper->{VARS}->{PRINT_TYPE} eq $env{'form.lastprinttype'}) {
 2030: 	if (!defined ($env{"form.CURRENT_STATE"})) {
 2031: 	    
 2032: 	    $helper->{VARS}->{FINISHPAGE} = $env{'form.pagebreaks'};
 2033: 	} else {
 2034: 	    my $state = $env{"form.CURRENT_STATE"};
 2035: 	    if ($state eq "START") {
 2036: 		$helper->{VARS}->{FINISHPAGE} = $env{'form.pagebreaks'};
 2037: 	    }
 2038: 	}
 2039: 	
 2040:     }
 2041: 
 2042:     
 2043:     # This will persistently load in the data we want from the
 2044:     # very first screen.
 2045:     # Detect whether we're coming from construction space
 2046:     if ($env{'form.postdata'}=~/^(?:http:\/\/[^\/]+\/|\/|)\~([^\/]+)\/(.*)$/) {
 2047:         $helper->{VARS}->{'filename'} = "~$1/$2";
 2048:         $helper->{VARS}->{'construction'} = 1;
 2049:     } else {
 2050:         if ($env{'form.postdata'}) {
 2051:             $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($env{'form.postdata'});
 2052:         }
 2053:         if ($env{'form.symb'}) {
 2054:             $helper->{VARS}->{'symb'} = $env{'form.symb'};
 2055:         }
 2056:         if ($env{'form.url'}) {
 2057:             $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($helper->{VARS}->{'postdata'});
 2058:         }
 2059: 
 2060:     }
 2061: 
 2062:     if ($env{'form.symb'}) {
 2063:         $helper->{VARS}->{'symb'} = $env{'form.symb'};
 2064:     }
 2065:     if ($env{'form.url'}) {
 2066:         $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($helper->{VARS}->{'postdata'});
 2067: 
 2068:     }
 2069:     $helper->{VARS}->{'symb'}=
 2070: 	&Apache::lonenc::check_encrypt($helper->{VARS}->{'symb'});
 2071:     my ($resourceTitle,$sequenceTitle,$mapTitle) = &details_for_menu($helper);
 2072:     if ($sequenceTitle ne '') {$helper->{VARS}->{'assignment'}=$sequenceTitle;}
 2073: 
 2074:     
 2075:     # Extract map
 2076:     my $symb = $helper->{VARS}->{'symb'};
 2077:     my ($map, $id, $url);
 2078:     my $subdir;
 2079: 
 2080:     # Get the resource name from construction space
 2081:     if ($helper->{VARS}->{'construction'}) {
 2082:         $resourceTitle = substr($helper->{VARS}->{'filename'}, 
 2083:                                 rindex($helper->{VARS}->{'filename'}, '/')+1);
 2084:         $subdir = substr($helper->{VARS}->{'filename'},
 2085:                          0, rindex($helper->{VARS}->{'filename'}, '/') + 1);
 2086:     } else {
 2087:         ($map, $id, $url) = &Apache::lonnet::decode_symb($symb);
 2088:         $helper->{VARS}->{'postdata'} = 
 2089: 	    &Apache::lonenc::check_encrypt(&Apache::lonnet::clutter($url));
 2090: 
 2091:         if (!$resourceTitle) { # if the resource doesn't have a title, use the filename
 2092:             my $postdata = $helper->{VARS}->{'postdata'};
 2093:             $resourceTitle = substr($postdata, rindex($postdata, '/') + 1);
 2094:         }
 2095:         $subdir = &Apache::lonnet::filelocation("", $url);
 2096:     }
 2097:     if (!$helper->{VARS}->{'curseed'} && $env{'form.curseed'}) {
 2098: 	$helper->{VARS}->{'curseed'}=$env{'form.curseed'};
 2099:     }
 2100:     if (!$helper->{VARS}->{'probstatus'} && $env{'form.problemtype'}) {
 2101: 	$helper->{VARS}->{'probstatus'}=$env{'form.problemtype'};
 2102:     }
 2103: 
 2104:     my $userCanSeeHidden = Apache::lonnavmaps::advancedUser();
 2105: 
 2106:     Apache::lonhelper::registerHelperTags();
 2107: 
 2108:     # "Delete everything after the last slash."
 2109:     $subdir =~ s|/[^/]+$||;
 2110:     if (not $helper->{VARS}->{'construction'}) {
 2111: 	$subdir=$Apache::lonnet::perlvar{'lonDocRoot'}.'/res/'.$subdir;
 2112:     }
 2113:     # "Remove all duplicate slashes."
 2114:     $subdir =~ s|/+|/|g;
 2115: 
 2116:     # What can be printed is a very dynamic decision based on
 2117:     # lots of factors. So we need to dynamically build this list.
 2118:     # To prevent security leaks, states are only added to the wizard
 2119:     # if they can be reached, which ensures manipulating the form input
 2120:     # won't allow anyone to reach states they shouldn't have permission
 2121:     # to reach.
 2122: 
 2123:     # printChoices is tracking the kind of printing the user can
 2124:     # do, and will be used in a choices construction later.
 2125:     # In the meantime we will be adding states and elements to
 2126:     # the helper by hand.
 2127:     my $printChoices = [];
 2128:     my $paramHash;
 2129: 
 2130:     if ($resourceTitle) {
 2131:         push @{$printChoices}, ["<b><i>$resourceTitle</i></b> (".&mt('what you just saw on the screen').")", 'current_document', 'PAGESIZE'];
 2132:     }
 2133: 
 2134:     # Useful filter strings
 2135:     my $isProblem = '($res->is_problem()||$res->contains_problem) ';
 2136:     $isProblem .= ' && !$res->randomout()' if !$userCanSeeHidden;
 2137:     my $isProblemOrMap = '$res->is_problem() || $res->contains_problem() || $res->is_sequence()';
 2138:     my $isNotMap = '!$res->is_sequence()';
 2139:     $isNotMap .= ' && !$res->randomout()' if !$userCanSeeHidden;
 2140:     my $isMap = '$res->is_map()';
 2141:     my $symbFilter = '$res->shown_symb()';
 2142:     my $urlValue = '$res->link()';
 2143: 
 2144:     $helper->declareVar('SEQUENCE');
 2145: 
 2146: 
 2147: 
 2148:     # If we're in a sequence...
 2149:     if (($helper->{'VARS'}->{'construction'} ne '1') &&
 2150: 
 2151: 	$helper->{VARS}->{'postdata'} &&
 2152: 	$helper->{VARS}->{'assignment'}) {
 2153:         # Allow problems from sequence
 2154:         push @{$printChoices}, ["<b>".&mt('Problems')."</b> ".&mt('in')." <b><i>$sequenceTitle</i></b>", 'map_problems', 'CHOOSE_PROBLEMS'];
 2155:         # Allow all resources from sequence
 2156:         push @{$printChoices}, ["<b>".&mt('Resources')."</b> ".&mt('in')." <b><i>$sequenceTitle</i></b>", 'map_problems_pages', 'CHOOSE_PROBLEMS_HTML'];
 2157: 
 2158:         my $helperFragment = <<HELPERFRAGMENT;
 2159:   <state name="CHOOSE_PROBLEMS" title="Select Problem(s) to print">
 2160:     <message>(mark them then click "next" button) <br /></message>
 2161:     <resource variable="RESOURCES" multichoice="1" toponly='1' addstatus="1"
 2162:               closeallpages="1">
 2163:       <nextstate>PAGESIZE</nextstate>
 2164:       <filterfunc>return $isProblem;</filterfunc>
 2165:       <mapurl>$map</mapurl>
 2166:       <valuefunc>return $symbFilter;</valuefunc>
 2167:       <option text='Newpage' variable='FINISHPAGE' />
 2168:       </resource>
 2169:     </state>
 2170: 
 2171:   <state name="CHOOSE_PROBLEMS_HTML" title="Select Resource(s) to print">
 2172:     <message>(mark them then click "next" button) <br /></message>
 2173:     <resource variable="RESOURCES" multichoice="1" toponly='1' addstatus="1"
 2174:               closeallpages="1">
 2175:       <nextstate>PAGESIZE</nextstate>
 2176:       <filterfunc>return $isNotMap;</filterfunc>
 2177:       <mapurl>$map</mapurl>
 2178:       <valuefunc>return $symbFilter;</valuefunc>
 2179:       <option text='Newpage' variable='FINISHPAGE' />
 2180:       </resource>
 2181:     </state>
 2182: HELPERFRAGMENT
 2183: 
 2184: 	&Apache::lonxml::xmlparse($r, 'helper', $helperFragment);
 2185:     }
 2186: 
 2187:     # If the user has pfo (print for otheres) allow them to print all 
 2188:     # problems and resources  in the entier course, optionally for selected students
 2189:     if ($perm{'pfo'} && 
 2190:         ($helper->{VARS}->{'postdata'}=~/\/res\// || $helper->{VARS}->{'postdata'}=~/\/(syllabus|smppg|aboutme|bulletinboard)$/)) { 
 2191: 
 2192:         push @{$printChoices}, ['<b>Problems</b> from <b>entire course</b>', 'all_problems', 'ALL_PROBLEMS'];
 2193: 	push @{$printChoices}, ['<b>Resources</b> from <b>entire course</b>', 'all_resources', 'ALL_RESOURCES'];
 2194:          &Apache::lonxml::xmlparse($r, 'helper', <<ALL_PROBLEMS);
 2195:   <state name="ALL_PROBLEMS" title="Select Problem(s) to print">
 2196:     <message>(mark them then click "next" button) <br /></message>
 2197:     <resource variable="RESOURCES" toponly='0' multichoice="1"
 2198: 	suppressEmptySequences='0' addstatus="1" closeallpages="1">
 2199:       <nextstate>PAGESIZE</nextstate>
 2200:       <filterfunc>return $isProblemOrMap;</filterfunc>
 2201:       <choicefunc>return $isNotMap;</choicefunc>
 2202:       <valuefunc>return $symbFilter;</valuefunc>
 2203:       <option text='Newpage' variable='FINISHPAGE' />
 2204:     </resource>
 2205:   </state>
 2206:   <state name="ALL_RESOURCES" title="Select Resource(s) to print">
 2207:     <message>(Mark them then click "next" button) <br /> </message>
 2208:     <resource variable="RESOURCES" toponly='0' multichoice='1'
 2209:               suppressEmptySequences='0' addstatus='1' closeallpages='1'>
 2210:       <nextstate>PAGESIZE</nextstate>
 2211:       <filterfunc>return $isNotMap; </filterfunc>
 2212:       <valuefunc>return $symbFilter;</valuefunc>
 2213:       <option text='NewPage' variable='FINISHPAGE' />
 2214:     </resource>
 2215:   </state>
 2216: ALL_PROBLEMS
 2217: 
 2218: 	if ($helper->{VARS}->{'assignment'}) {
 2219: 	    push @{$printChoices}, ["<b>".&mt('Problems')."</b> ".&mt('from')." <b><i>$sequenceTitle</i></b> ".&mt('for')." <b>".&mt('selected students')."</b>", 'problems_for_students', 'CHOOSE_STUDENTS'];
 2220: 	    push @{$printChoices}, ["<b>".&mt('Problems')."</b> ".&mt('from')." <b><i>$sequenceTitle</i></b> ".&mt('for')." <b>".&mt('anonymous students')."</b>", 'problems_for_anon', 'CHOOSE_ANON1'];
 2221: 	}
 2222: 
 2223: 	# resource_selector will hold a few states that:
 2224: 	#   - Allow resources to be selected for printing.
 2225: 	#   - Determine pagination between assignments.
 2226: 	#   - Determine how many assignments should be bundled into a single PDF.
 2227:         # TODO:
 2228: 	#    Probably good to do things like separate this up into several vars, each
 2229: 	#    with one state, and use REGEXPs at inclusion time to set state names
 2230: 	#    and next states for better mix and match capability
 2231: 	#
 2232: 	my $resource_selector=<<RESOURCE_SELECTOR;
 2233:     <state name="SELECT_PROBLEMS" title="Select resources to print">
 2234:    <nextstate>PRINT_FORMATTING</nextstate> 
 2235:    <message><br /><big><i><b>Select resources for the assignment</b></i></big><br /></message>
 2236:     <resource variable="RESOURCES" multichoice="1" addstatus="1" 
 2237:               closeallpages="1">
 2238:       <filterfunc>return $isProblem;</filterfunc>
 2239:       <mapurl>$map</mapurl>
 2240:       <valuefunc>return $symbFilter;</valuefunc>
 2241:       <option text='New Page' variable='FINISHPAGE' />
 2242:       </resource>
 2243:     </state>
 2244:     <state name="PRINT_FORMATTING" title="How should results be printed?">
 2245:     <nextstate>NUMBER_PER_PDF</nextstate>
 2246:     <message><br /><big><i><b>How should the results be printed?</b></i></big><br /></message>
 2247:     <choices variable="EMPTY_PAGES">
 2248:       <choice computer='0'>Start each student\'s assignment on a new page/column (add a pagefeed after each assignment)</choice>
 2249:       <choice computer='1'>Add one empty page/column after each student\'s assignment</choice>
 2250:       <choice computer='2'>Add two empty pages/column after each student\'s assignment</choice>
 2251:       <choice computer='3'>Add three empty pages/column after each student\'s assignment</choice>
 2252:     </choices>
 2253:     </state>
 2254:     <state name="NUMBER_PER_PDF" title="Number printed at once">
 2255:     <nextstate>PAGESIZE</nextstate>
 2256:     <message><hr width='33%' /><b>How do you want assignments split into PDF files? </b></message>
 2257:     <choices variable="SPLIT_PDFS">
 2258:        <choice computer="all">All assignments in a single PDF file</choice>
 2259:        <choice computer="sections">Each PDF contains exactly one section</choice>
 2260:        <choice computer="oneper">Each PDF contains exactly one assignment</choice>
 2261:        <choice computer="usenumber">Specify Number:</choice>
 2262:     </choices>
 2263:     <string variable="NUMBER_TO_PRINT" maxlength="5" size="5"><defaultvalue>"all"</defaultvalue></string>
 2264:     </state>
 2265: RESOURCE_SELECTOR
 2266: 
 2267:         &Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_STUDENTS);
 2268:   <state name="CHOOSE_STUDENTS" title="Select Students and Resources">
 2269:       <message><b>Select sort order</b> </message>
 2270:     <choices variable='student_sort'>
 2271:       <choice computer='0'>Sort by section then student</choice>
 2272:       <choice computer='1'>Sort by students across sections.</choice>
 2273:     </choices>
 2274:       <student multichoice='1' variable="STUDENTS" nextstate="SELECT_PROBLEMS" coursepersonnel="1"/>
 2275:   </state>
 2276:     $resource_selector
 2277: CHOOSE_STUDENTS
 2278: 
 2279: 	my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 2280: 	my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 2281:         my @names=&Apache::lonnet::getkeys('CODEs',$cdom,$cnum);
 2282: 	my $namechoice='<choice></choice>';
 2283: 	foreach my $name (sort {uc($a) cmp uc($b)} @names) {
 2284: 	    if ($name =~ /^error: 2 /) { next; }
 2285: 	    if ($name =~ /^type\0/) { next; }
 2286: 	    $namechoice.='<choice computer="'.$name.'">'.$name.'</choice>';
 2287: 	}
 2288: 
 2289: 
 2290: 	my %code_values;
 2291: 	my %codes_to_print;
 2292: 	foreach my $key (@names) {
 2293: 	    %code_values = &Apache::grades::get_codes($key, $cdom, $cnum);
 2294: 	    foreach my $key (keys(%code_values)) {
 2295: 		$codes_to_print{$key} = 1;
 2296: 	    }
 2297: 	}
 2298: 
 2299: 	my $code_selection = "<choice></choice>\n";
 2300: 	foreach my $code (sort {uc($a) cmp uc($b)} (keys(%codes_to_print))) {
 2301: 	    my $choice  = $code;
 2302: 	    if ($code =~ /^[A-Z]+$/) { # Alpha code
 2303: 		$choice = &letters_to_num($code);
 2304: 	    }
 2305: 	    $code_selection .= '   <choice computer="'.$choice.'">'.$code."</choice>\n";
 2306: 	}
 2307: 	open(FH,$Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
 2308: 	my $codechoice='';
 2309: 	foreach my $line (<FH>) {
 2310: 	    my ($name,$description,$code_type,$code_length)=
 2311: 		(split(/:/,$line))[0,1,2,4];
 2312: 	    if ($code_length > 0 && 
 2313: 		$code_type =~/^(letter|number|-1)/) {
 2314: 		$codechoice.='<choice computer="'.$name.'">'.$description.'</choice>';
 2315: 	    }
 2316: 	}
 2317: 	if ($codechoice eq '') {
 2318: 	    $codechoice='<choice computer="default">Default</choice>';
 2319: 	}
 2320:         &Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_ANON1);
 2321:   <state name="CHOOSE_ANON1" title="Select Students and Resources">
 2322:     <nextstate>SELECT_PROBLEMS</nextstate>
 2323:     <message><table><tr><td><b>Number of anonymous assignments to print:</b></td><td></message>
 2324:     <string variable="NUMBER_TO_PRINT_TOTAL" maxlength="5" size="5">
 2325:        <validator>
 2326: 	if (((\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}+0) < 1) &&
 2327: 	    !\$helper->{'VARS'}{'REUSE_OLD_CODES'}                &&
 2328:             !\$helper->{'VARS'}{'SINGLE_CODE'}                    &&
 2329: 	    !\$helper->{'VARS'}{'CODE_SELECTED_FROM_LIST'}) {
 2330: 	    return "You need to specify the number of assignments to print";
 2331: 	}
 2332: 	return undef;
 2333:        </validator>
 2334:     </string>
 2335:     <message></td></tr><tr><td></message>
 2336:     <message><b>Names to store the CODEs under for later:</b></message>
 2337:     <message></td><td></message>
 2338:     <string variable="ANON_CODE_STORAGE_NAME" maxlength="50" size="20" />
 2339:     <message></td></tr><tr><td></message>
 2340:     <message><b>Bubble sheet type:</b></message>
 2341:     <message></td><td></message>
 2342:     <dropdown variable="CODE_OPTION" multichoice="0" allowempty="0">
 2343:     $codechoice
 2344:     </dropdown>
 2345:     <message></td></tr><tr><td colspan="2"><hr width='33%' /></td></tr><tr><td></message>
 2346:     <message></td></tr><tr><td></message>
 2347:     <message><b>Enter a CODE to print:</b></td><td></message>
 2348:     <string variable="SINGLE_CODE" size="10">
 2349:         <validator>
 2350: 	   if(!\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}           &&
 2351: 	      !\$helper->{'VARS'}{'REUSE_OLD_CODES'}                 &&
 2352: 	      !\$helper->{'VARS'}{'CODE_SELECTED_FROM_LIST'}) {
 2353: 	      return &Apache::lonprintout::is_code_valid(\$helper->{'VARS'}{'SINGLE_CODE'},
 2354: 						      \$helper->{'VARS'}{'CODE_OPTION'});
 2355: 	   } else {
 2356: 	       return undef;	# Other forces control us.
 2357: 	   }
 2358:         </validator>
 2359:     </string>
 2360:     <message></td></tr><tr><td colspan="2"><hr width='33%' /></td></tr><tr><td></message>
 2361:     <message><b>Reprint a set of saved CODEs:</b></message>
 2362:     <message></td><td></message>
 2363:     <dropdown variable="REUSE_OLD_CODES">
 2364:         $namechoice
 2365:     </dropdown>
 2366:     <message></td></tr></table></message>
 2367:     <message><hr width='33%' /></message>
 2368:   </state>
 2369:   $resource_selector
 2370: CHOOSE_ANON1
 2371: 
 2372: 
 2373: 	if ($helper->{VARS}->{'assignment'}) {
 2374: 	    push @{$printChoices}, ["<b>".&mt('Resources')."</b> ".&mt('from')." <b><i>$sequenceTitle</i></b> ".&mt('for')." <b>".&mt('selected students')."</b>", 'resources_for_students', 'CHOOSE_STUDENTS1'];
 2375: 	    push @{$printChoices}, ["<b>".&mt('Resources')."</b> ".&mt('from')." <b><i>$sequenceTitle</i></b> ".&mt('for')." <b>".&mt('anonymous students')."</b>", 'resources_for_anon', 'CHOOSE_ANON2'];
 2376: 	}
 2377: 	    
 2378: 
 2379: 	$resource_selector=<<RESOURCE_SELECTOR;
 2380:     <state name="SELECT_RESOURCES" title="Select Resources">
 2381:     <nextstate>PRINT_FORMATTING</nextstate>
 2382:     <message><br /><big><i><b>Select resources for the assignment</b></i></big><br /></message>
 2383:     <resource variable="RESOURCES" multichoice="1" addstatus="1" 
 2384:               closeallpages="1">
 2385:       <filterfunc>return $isNotMap;</filterfunc>
 2386:       <mapurl>$map</mapurl>
 2387:       <valuefunc>return $symbFilter;</valuefunc>
 2388:       <option text='Newpage' variable='FINISHPAGE' />
 2389:       </resource>
 2390:     </state>
 2391:     <state name="PRINT_FORMATTING" title="Format of the print job">
 2392:     <nextstate>NUMBER_PER_PDF</nextstate>
 2393:     <message><br /><big><i><b>How should the results be printed?</b></i></big><br /></message>
 2394:     <choices variable="EMPTY_PAGES">
 2395:       <choice computer='0'>Start each student\'s assignment on a new page/column (add a pagefeed after each assignment)</choice>
 2396:       <choice computer='1'>Add one empty page/column after each student\'s assignment</choice>
 2397:       <choice computer='2'>Add two empty pages/column after each student\'s assignment</choice>
 2398:       <choice computer='3'>Add three empty pages/column after each student\'s assignment</choice>
 2399:     </choices>
 2400:     </state>
 2401:     <state name="NUMBER_PER_PDF" title="Number assignments per pdf">
 2402:     <nextstate>PAGESIZE</nextstate>
 2403:     <message><hr width='33%' /><b>How do you want assignments split into PDF files? </b></message>
 2404:     <choices variable="SPLIT_PDFS">
 2405:        <choice computer="all">All assignments in a single PDF file</choice>
 2406:        <choice computer="sections">Each PDF contains exactly one section</choice>
 2407:        <choice computer="oneper">Each PDF contains exactly one assignment</choice>
 2408:        <choice computer="usenumber">Specify Number:</choice>
 2409:     </choices>
 2410:     <string variable="NUMBER_TO_PRINT" maxlength="5" size="5"><defaultvalue>"all"</defaultvalue></string>
 2411:     </state>
 2412: RESOURCE_SELECTOR
 2413: 
 2414: 	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_STUDENTS1);
 2415:   <state name="CHOOSE_STUDENTS1" title="Select Students and Resources">
 2416:     <choices variable='student_sort'>
 2417:       <choice computer='0'>Sort by section then student</choice>
 2418:       <choice computer='1'>Sort by students across sections.</choice>
 2419:     </choices>
 2420:     <student multichoice='1' variable="STUDENTS" nextstate="SELECT_RESOURCES" coursepersonnel="1" />
 2421: 
 2422:     </state>
 2423:     $resource_selector
 2424: CHOOSE_STUDENTS1
 2425: 
 2426: 	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_ANON2);
 2427:   <state name="CHOOSE_ANON2" title="Select Students and Resources">
 2428:     <nextstate>SELECT_RESOURCES</nextstate>
 2429:     <message><table><tr><td><b>Number of anonymous assignments to print:</b></td><td></message>
 2430:     <string variable="NUMBER_TO_PRINT_TOTAL" maxlength="5" size="5">
 2431:        <validator>
 2432: 	if (((\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}+0) < 1) &&
 2433: 	    !\$helper->{'VARS'}{'REUSE_OLD_CODES'}                &&
 2434: 	    !\$helper->{'VARS'}{'SINGLE_CODE'}                   &&
 2435: 	    !\$helper->{'VARS'}{'CODE_SELECTED_FROM_LIST'}) {
 2436: 	    return "You need to specify the number of assignments to print";
 2437: 	}
 2438: 	return undef;
 2439:        </validator>
 2440:     </string>
 2441:     <message></td></tr><tr><td></message>
 2442:     <message><b>Names to store the CODEs under for later:</b></message>
 2443:     <message></td><td></message>
 2444:     <string variable="ANON_CODE_STORAGE_NAME" maxlength="50" size="20" />
 2445:     <message></td></tr><tr><td></message>
 2446:     <message><b>Bubble sheet type:</b></message>
 2447:     <message></td><td></message>
 2448:     <dropdown variable="CODE_OPTION" multichoice="0" allowempty="0">
 2449:     $codechoice
 2450:     </dropdown>
 2451:     <message></td></tr><tr><td colspan="2"><hr width='33%' /></td></tr><tr><td></message>
 2452:     <message></td></tr><tr><td></message>
 2453:     <message><b>Enter a CODE to print:</b></td><td></message>
 2454:     <string variable="SINGLE_CODE" size="10">
 2455:         <validator>
 2456: 	   if(!\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}           &&
 2457: 	      !\$helper->{'VARS'}{'REUSE_OLD_CODES'}                 &&
 2458: 	      !\$helper->{'VARS'}{'CODE_SELECTED_FROM_LIST'}) {
 2459: 	      return &Apache::lonprintout::is_code_valid(\$helper->{'VARS'}{'SINGLE_CODE'},
 2460: 						      \$helper->{'VARS'}{'CODE_OPTION'});
 2461: 	   } else {
 2462: 	       return undef;	# Other forces control us.
 2463: 	   }
 2464:         </validator>
 2465:     </string>
 2466:     <message></td></tr><tr><td colspan="2"><hr width='33%' /></td></tr><tr><td></message>
 2467:     <message><b>Reprint a set of saved CODEs:</b></message>
 2468:     <message></td><td></message>
 2469:     <dropdown variable="REUSE_OLD_CODES">
 2470:         $namechoice
 2471:     </dropdown>
 2472:     <message></td></tr></table></message>
 2473:     <message><hr width='33%' /></message>
 2474:   </state>
 2475:     $resource_selector
 2476: CHOOSE_ANON2
 2477:     }
 2478: 
 2479:     # FIXME: That RE should come from a library somewhere.
 2480:     if ((((&Apache::lonnet::allowed('bre',$subdir) eq 'F') and ($helper->{VARS}->{'postdata'}=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)/)) or defined $helper->{'VARS'}->{'construction'}) and $perm{'pav'} and $subdir ne $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/') {    
 2481:         push @{$printChoices}, ["<b>".&mt('Problems')."</b> ".&mt('from current subdirectory')." <b><i>$subdir</i></b>", 'problems_from_directory', 'CHOOSE_FROM_SUBDIR'];
 2482: 
 2483:         my $f = '$filename';
 2484:         my $xmlfrag = <<CHOOSE_FROM_SUBDIR;
 2485:   <state name="CHOOSE_FROM_SUBDIR" title="Select File(s) from <b><small>$subdir</small></b> to print">
 2486:     <message>(mark them then click "next" button) <br /></message>
 2487:     <files variable="FILES" multichoice='1'>
 2488:       <nextstate>PAGESIZE</nextstate>
 2489:       <filechoice>return '$subdir';</filechoice>
 2490: CHOOSE_FROM_SUBDIR
 2491:         
 2492:         # this is broken up because I really want interpolation above,
 2493:         # and I really DON'T want it below
 2494:         $xmlfrag .= <<'CHOOSE_FROM_SUBDIR';
 2495:       <filefilter>return Apache::lonhelper::files::not_old_version($filename) &&
 2496: 	  $filename =~ m/\.(problem|exam|quiz|assess|survey|form|library)$/;
 2497:       </filefilter>
 2498:       </files>
 2499:     </state>
 2500: CHOOSE_FROM_SUBDIR
 2501:         &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 2502:     }
 2503: 
 2504:     # Allow the user to select any sequence in the course, feed it to
 2505:     # another resource selector for that sequence
 2506:     if (!$helper->{VARS}->{'construction'}) {
 2507: 	push @$printChoices, ["<b>Resources</b> from <b>selected sequence</b> in course",
 2508: 			      'select_sequences', 'CHOOSE_SEQUENCE'];
 2509: 	my $escapedSequenceName = $helper->{VARS}->{'SEQUENCE'};
 2510: 	#Escape apostrophes and backslashes for Perl
 2511: 	$escapedSequenceName =~ s/\\/\\\\/g;
 2512: 	$escapedSequenceName =~ s/'/\\'/g;
 2513: 	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_FROM_ANY_SEQUENCE);
 2514:   <state name="CHOOSE_SEQUENCE" title="Select Sequence To Print From">
 2515:     <message>Select the sequence to print resources from:</message>
 2516:     <resource variable="SEQUENCE">
 2517:       <nextstate>CHOOSE_FROM_ANY_SEQUENCE</nextstate>
 2518:       <filterfunc>return \$res->is_sequence;</filterfunc>
 2519:       <valuefunc>return $urlValue;</valuefunc>
 2520:       <choicefunc>return \$res->hasResource(\$res,sub { return !\$_[0]->is_sequence() },0,0);
 2521: 	</choicefunc>
 2522:       </resource>
 2523:     </state>
 2524:   <state name="CHOOSE_FROM_ANY_SEQUENCE" title="Select Resources To Print">
 2525:     <message>(mark desired resources then click "next" button) <br /></message>
 2526:     <resource variable="RESOURCES" multichoice="1" toponly='1' addstatus="1"
 2527:               closeallpages="1">
 2528:       <nextstate>PAGESIZE</nextstate>
 2529:       <filterfunc>return $isProblem</filterfunc>
 2530:       <mapurl evaluate='1'>return '$escapedSequenceName';</mapurl>
 2531:       <valuefunc>return $symbFilter;</valuefunc>
 2532:       <option text='Newpage' variable='FINISHPAGE' />
 2533:       </resource>
 2534:     </state>
 2535: CHOOSE_FROM_ANY_SEQUENCE
 2536: }
 2537: 
 2538:     # Generate the first state, to select which resources get printed.
 2539:     Apache::lonhelper::state->new("START", "Select Printing Options:");
 2540:     $paramHash = Apache::lonhelper::getParamHash();
 2541:     $paramHash->{MESSAGE_TEXT} = "";
 2542:     Apache::lonhelper::message->new();
 2543:     $paramHash = Apache::lonhelper::getParamHash();
 2544:     $paramHash->{'variable'} = 'PRINT_TYPE';
 2545:     $paramHash->{CHOICES} = $printChoices;
 2546:     Apache::lonhelper::choices->new();
 2547: 
 2548:     my $startedTable = 0; # have we started an HTML table yet? (need
 2549:                           # to close it later)
 2550: 
 2551:     if (($perm{'pav'} and &Apache::lonnet::allowed('vgr',$env{'request.course.id'})) or 
 2552: 	($helper->{VARS}->{'construction'} eq '1')) {
 2553: 	addMessage("<hr width='33%' /><table><tr><td align='right'>Print: </td><td>");
 2554:         $paramHash = Apache::lonhelper::getParamHash();
 2555: 	$paramHash->{'variable'} = 'ANSWER_TYPE';   
 2556: 	$helper->declareVar('ANSWER_TYPE');         
 2557:         $paramHash->{CHOICES} = [
 2558:                                    ['Without Answers', 'yes'],
 2559:                                    ['With Answers', 'no'],
 2560:                                    ['Only Answers', 'only']
 2561:                                 ];
 2562:         Apache::lonhelper::dropdown->new();
 2563: 	addMessage("</td></tr>");
 2564: 	$startedTable = 1;
 2565:     }
 2566: 
 2567:     if ($perm{'pav'}) {
 2568: 	if (!$startedTable) {
 2569: 	    addMessage("<hr width='33%' /><table><tr><td align='right'>LaTeX mode: </td><td>");
 2570: 	    $startedTable = 1;
 2571: 	} else {
 2572: 	    addMessage("<tr><td align='right'>LaTeX mode: </td><td>");
 2573: 	}
 2574:         $paramHash = Apache::lonhelper::getParamHash();
 2575: 	$paramHash->{'variable'} = 'LATEX_TYPE';   
 2576: 	$helper->declareVar('LATEX_TYPE');  
 2577: 	if ($helper->{VARS}->{'construction'} eq '1') {       
 2578: 	    $paramHash->{CHOICES} = [
 2579: 				     ['standard LaTeX mode', 'standard'], 
 2580: 				     ['LaTeX batchmode', 'batchmode'], ];
 2581: 	} else {
 2582: 	    $paramHash->{CHOICES} = [
 2583: 				     ['LaTeX batchmode', 'batchmode'],
 2584: 				     ['standard LaTeX mode', 'standard'] ];
 2585: 	}
 2586:         Apache::lonhelper::dropdown->new();
 2587:  
 2588: 	addMessage("</td></tr><tr><td align='right'>Print Table of Contents: </td><td>");
 2589:         $paramHash = Apache::lonhelper::getParamHash();
 2590: 	$paramHash->{'variable'} = 'TABLE_CONTENTS';   
 2591: 	$helper->declareVar('TABLE_CONTENTS');         
 2592:         $paramHash->{CHOICES} = [
 2593:                                    ['No', 'no'],
 2594:                                    ['Yes', 'yes'] ];
 2595:         Apache::lonhelper::dropdown->new();
 2596: 	addMessage("</td></tr>");
 2597:         
 2598: 	if (not $helper->{VARS}->{'construction'}) {
 2599: 	    addMessage("<tr><td align='right'>Print Index: </td><td>");
 2600: 	    $paramHash = Apache::lonhelper::getParamHash();
 2601: 	    $paramHash->{'variable'} = 'TABLE_INDEX';   
 2602: 	    $helper->declareVar('TABLE_INDEX');         
 2603: 	    $paramHash->{CHOICES} = [
 2604: 				     ['No', 'no'],
 2605: 				     ['Yes', 'yes'] ];
 2606: 	    Apache::lonhelper::dropdown->new();
 2607: 	    addMessage("</td></tr>");
 2608: 	    addMessage("<tr><td align='right'>Print Discussions: </td><td>");
 2609: 	    $paramHash = Apache::lonhelper::getParamHash();
 2610: 	    $paramHash->{'variable'} = 'PRINT_DISCUSSIONS';   
 2611: 	    $helper->declareVar('PRINT_DISCUSSIONS');         
 2612: 	    $paramHash->{CHOICES} = [
 2613: 				     ['No', 'no'],
 2614: 				     ['Yes', 'yes'] ];
 2615: 	    Apache::lonhelper::dropdown->new();
 2616: 	    addMessage("</td></tr>");
 2617: 
 2618: 	    addMessage("<tr><td align = 'right'>  </td><td>");
 2619: 	    $paramHash = Apache::lonhelper::getParamHash();
 2620: 	    $paramHash->{'multichoice'} = "true";
 2621: 	    $paramHash->{'allowempty'}  = "true";
 2622: 	    $paramHash->{'variable'}   = "showallfoils";
 2623: 	    $paramHash->{'CHOICES'} = [ ["Show all foils", "1"] ];
 2624: 	    Apache::lonhelper::choices->new();
 2625: 	    addMessage("</td></tr>");
 2626: 	}
 2627: 
 2628: 	if ($helper->{'VARS'}->{'construction'}) { 
 2629: 	    my $stylevalue=$env{'construct.style'};
 2630: 	    my $xmlfrag .= <<"RNDSEED";
 2631: 	    <message><tr><td align='right'>Use random seed:  </td><td></message>
 2632: 	    <string variable="curseed" size="15" maxlength="15">
 2633: 		<defaultvalue>
 2634: 	            return $helper->{VARS}->{'curseed'};
 2635: 	        </defaultvalue>
 2636: 	    </string>
 2637: 	     <message></td></tr><tr><td align="right">Use style file:</td><td></message>
 2638:              <message><input type="text" size="40" name="style_file_value" value="$stylevalue"  />&nbsp; <a href="javascript:openbrowser('helpform','style_file_value','sty')">Select style file</a> </td><tr><td></message>
 2639: 	     <choices allowempty="1" multichoice="true" variable="showallfoils">
 2640:                 <choice computer="1">Show all foils?</choice>
 2641:              </choices>
 2642: 	     <message></td></tr></message>
 2643: RNDSEED
 2644:             &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 2645: 	    $helper->{'VARS'}->{'style_file'}=$env{'form.style_file_value'};
 2646: 	    
 2647: 	} 
 2648:     }
 2649: 
 2650: 
 2651: 
 2652: 
 2653:     if ($startedTable) {
 2654: 	addMessage("</table>");
 2655:     }
 2656: 
 2657:     Apache::lonprintout::page_format_state->new("FORMAT");
 2658: 
 2659:     # Generate the PAGESIZE state which will offer the user the margin
 2660:     # choices if they select one column
 2661:     Apache::lonhelper::state->new("PAGESIZE", "Set Margins");
 2662:     Apache::lonprintout::page_size_state->new('pagesize', 'FORMAT', 'FINAL');
 2663: 
 2664: 
 2665:     $helper->process();
 2666: 
 2667: 
 2668:     # MANUAL BAILOUT CONDITION:
 2669:     # If we're in the "final" state, bailout and return to handler
 2670:     if ($helper->{STATE} eq 'FINAL') {
 2671:         return $helper;
 2672:     }    
 2673: 
 2674:     $r->print($helper->display());
 2675:     if ($helper->{STATE} eq 'START') {
 2676: 	&recently_generated($r);
 2677:     }
 2678:     &Apache::lonhelper::unregisterHelperTags();
 2679: 
 2680:     return OK;
 2681: }
 2682: 
 2683: 
 2684: 1;
 2685: 
 2686: package Apache::lonprintout::page_format_state;
 2687: 
 2688: =pod
 2689: 
 2690: =head1 Helper element: page_format_state
 2691: 
 2692: See lonhelper.pm documentation for discussion of the helper framework.
 2693: 
 2694: Apache::lonprintout::page_format_state is an element that gives the 
 2695: user an opportunity to select the page layout they wish to print 
 2696: with: Number of columns, portrait/landscape, and paper size. If you 
 2697: want to change the paper size choices, change the @paperSize array 
 2698: contents in this package.
 2699: 
 2700: page_format_state is always directly invoked in lonprintout.pm, so there
 2701: is no tag interface. You actually pass parameters to the constructor.
 2702: 
 2703: =over 4
 2704: 
 2705: =item * B<new>(varName): varName is where the print information will be stored in the format FIXME.
 2706: 
 2707: =back
 2708: 
 2709: =cut
 2710: 
 2711: use Apache::lonhelper;
 2712: 
 2713: no strict;
 2714: @ISA = ("Apache::lonhelper::element");
 2715: use strict;
 2716: use Apache::lonlocal;
 2717: use Apache::lonnet;
 2718: 
 2719: my $maxColumns = 2;
 2720: # it'd be nice if these all worked
 2721: #my @paperSize = ("letter [8 1/2x11 in]", "legal [8 1/2x14 in]", 
 2722: #                 "tabloid (ledger) [11x17 in]", "executive [7 1/2x10 in]",
 2723: #                 "a2 [420x594 mm]", "a3 [297x420 mm]", "a4 [210x297 mm]", 
 2724: #                 "a5 [148x210 mm]", "a6 [105x148 mm]" );
 2725: my @paperSize = ("letter [8 1/2x11 in]", "legal [8 1/2x14 in]", 
 2726: 		 "a4 [210x297 mm]");
 2727: 
 2728: # Tentative format: Orientation (L = Landscape, P = portrait) | Colnum |
 2729: #                   Paper type
 2730: 
 2731: sub new { 
 2732:     my $self = Apache::lonhelper::element->new();
 2733: 
 2734:     shift;
 2735: 
 2736:     $self->{'variable'} = shift;
 2737:     my $helper = Apache::lonhelper::getHelper();
 2738:     $helper->declareVar($self->{'variable'});
 2739:     bless($self);
 2740:     return $self;
 2741: }
 2742: 
 2743: sub render {
 2744:     my $self = shift;
 2745:     my $helper = Apache::lonhelper::getHelper();
 2746:     my $result = '';
 2747:     my $var = $self->{'variable'};
 2748:     my $PageLayout=&mt('Page layout');
 2749:     my $NumberOfColumns=&mt('Number of columns');
 2750:     my $PaperType=&mt('Paper type');
 2751:     $result .= <<STATEHTML;
 2752: 
 2753: <hr width="33%" />
 2754: <table cellpadding="3">
 2755:   <tr>
 2756:     <td align="center"><b>$PageLayout</b></td>
 2757:     <td align="center"><b>$NumberOfColumns</b></td>
 2758:     <td align="center"><b>$PaperType</b></td>
 2759:   </tr>
 2760:   <tr>
 2761:     <td>
 2762:       <label><input type="radio" name="${var}.layout" value="L" /> Landscape </label><br />
 2763:       <label><input type="radio" name="${var}.layout" value="P" checked='1'  /> Portrait </label>
 2764:     </td>
 2765:     <td align="center">
 2766:       <select name="${var}.cols">
 2767: STATEHTML
 2768: 
 2769:     my $i;
 2770:     for ($i = 1; $i <= $maxColumns; $i++) {
 2771:         if ($i == 2) {
 2772:             $result .= "<option value='$i' selected>$i</option>\n";
 2773:         } else {
 2774:             $result .= "<option value='$i'>$i</option>\n";
 2775:         }
 2776:     }
 2777: 
 2778:     $result .= "</select></td><td>\n";
 2779:     $result .= "<select name='${var}.paper'>\n";
 2780: 
 2781:     my %parmhash=&Apache::lonnet::coursedescription($env{'request.course.id'});
 2782:     my $DefaultPaperSize=lc($parmhash{'default_paper_size'});
 2783:     $DefaultPaperSize=~s/\s//g;
 2784:     if ($DefaultPaperSize eq '') {$DefaultPaperSize='letter';}
 2785:     $i = 0;
 2786:     foreach (@paperSize) {
 2787: 	$_=~/(\w+)/;
 2788: 	my $papersize=$1;
 2789:         if ($paperSize[$i]=~/$DefaultPaperSize/) {
 2790:             $result .= "<option selected value='$papersize'>" . $paperSize[$i] . "</option>\n";
 2791:         } else {
 2792:             $result .= "<option value='$papersize'>" . $paperSize[$i] . "</option>\n";
 2793:         }
 2794:         $i++;
 2795:     }
 2796:     $result .= "</select></td></tr></table>";
 2797:     return $result;
 2798: }
 2799: 
 2800: sub postprocess {
 2801:     my $self = shift;
 2802: 
 2803:     my $var = $self->{'variable'};
 2804:     my $helper = Apache::lonhelper->getHelper();
 2805:     $helper->{VARS}->{$var} = 
 2806:         $env{"form.$var.layout"} . '|' . $env{"form.$var.cols"} . '|' .
 2807:         $env{"form.$var.paper"};
 2808:     return 1;
 2809: }
 2810: 
 2811: 1;
 2812: 
 2813: package Apache::lonprintout::page_size_state;
 2814: 
 2815: =pod
 2816: 
 2817: =head1 Helper element: page_size_state
 2818: 
 2819: See lonhelper.pm documentation for discussion of the helper framework.
 2820: 
 2821: Apache::lonprintout::page_size_state is an element that gives the 
 2822: user the opportunity to further refine the page settings if they
 2823: select a single-column page.
 2824: 
 2825: page_size_state is always directly invoked in lonprintout.pm, so there
 2826: is no tag interface. You actually pass parameters to the constructor.
 2827: 
 2828: =over 4
 2829: 
 2830: =item * B<new>(varName): varName is where the print information will be stored in the format FIXME.
 2831: 
 2832: =back
 2833: 
 2834: =cut
 2835: 
 2836: use Apache::lonhelper;
 2837: use Apache::lonnet;
 2838: no strict;
 2839: @ISA = ("Apache::lonhelper::element");
 2840: use strict;
 2841: 
 2842: 
 2843: 
 2844: sub new { 
 2845:     my $self = Apache::lonhelper::element->new();
 2846: 
 2847:     shift; # disturbs me (probably prevents subclassing) but works (drops
 2848:            # package descriptor)... - Jeremy
 2849: 
 2850:     $self->{'variable'} = shift;
 2851:     my $helper = Apache::lonhelper::getHelper();
 2852:     $helper->declareVar($self->{'variable'});
 2853: 
 2854:     # The variable name of the format element, so we can look into 
 2855:     # $helper->{VARS} to figure out whether the columns are one or two
 2856:     $self->{'formatvar'} = shift;
 2857: 
 2858:     # The state to transition to after selection, or after discovering
 2859:     # the cols are not set to 1
 2860:     $self->{NEXTSTATE} = shift;
 2861:     bless($self);
 2862:     return $self;
 2863: }
 2864: 
 2865: sub render {
 2866:     my $self = shift;
 2867:     my $helper = Apache::lonhelper::getHelper();
 2868:     my $result = '';
 2869:     my $var = $self->{'variable'};
 2870: 
 2871:     if (defined $self->{ERROR_MSG}) {
 2872:         $result .= '<br /><font color="#FF0000">' . $self->{ERROR_MSG} . '</font><br />';
 2873:     }
 2874: 
 2875:     $result .= <<ELEMENTHTML;
 2876: 
 2877: <p>How should the column be formatted?</p>
 2878: 
 2879: <table cellpadding='3'>
 2880:   <tr>
 2881:     <td align='right'><b>Width</b>:</td>
 2882:     <td align='left'><input type='text' name='$var.width' value='18' size='4'></td>
 2883:     <td align='left'>
 2884:       <select name='$var.widthunit'>
 2885:         <option>cm</option><option>in</option>
 2886:       </select>
 2887:     </td>
 2888:   </tr>
 2889:   <tr>
 2890:     <td align='right'><b>Height</b>:</td>
 2891:     <td align='left'><input type='text' name="$var.height" value="25.9" size='4'></td>
 2892:     <td align='left'>
 2893:       <select name='$var.heightunit'>
 2894:         <option>cm</option><option>in</option>
 2895:       </select>
 2896:     </td>
 2897:   </tr>
 2898:   <tr>
 2899:     <td align='right'><b>Left margin</b>:</td>
 2900:     <td align='left'><input type='text' name='$var.lmargin' value='-1.5' size='4'></td>
 2901:     <td align='left'>
 2902:       <select name='$var.lmarginunit'>
 2903:         <option>cm</option><option>in</option>
 2904:       </select>
 2905:     </td>
 2906:   </tr>
 2907: </table>
 2908: 
 2909: <p>Hint: Some instructors like to leave scratch space for the student by
 2910: making the width much smaller than the width of the page.</p>
 2911: 
 2912: ELEMENTHTML
 2913: 
 2914:     return $result;
 2915: }
 2916: 
 2917: # If the user didn't select 1 column, skip this state.
 2918: sub preprocess {
 2919:     my $self = shift;
 2920:     my $helper = Apache::lonhelper::getHelper();
 2921: 
 2922:     my $format = $helper->{VARS}->{$self->{'formatvar'}};
 2923:     if (substr($format, 2, 1) ne '1') {
 2924:         $helper->changeState($self->{NEXTSTATE});
 2925:     }
 2926:    
 2927:     return 1;
 2928: }
 2929: 
 2930: sub postprocess {
 2931:     my $self = shift;
 2932: 
 2933:     my $var = $self->{'variable'};
 2934:     my $helper = Apache::lonhelper->getHelper();
 2935:     my $width = $helper->{VARS}->{$var .'.width'} = $env{"form.${var}.width"}; 
 2936:     my $height = $helper->{VARS}->{$var .'.height'} = $env{"form.${var}.height"}; 
 2937:     my $lmargin = $helper->{VARS}->{$var .'.lmargin'} = $env{"form.${var}.lmargin"}; 
 2938:     $helper->{VARS}->{$var .'.widthunit'} = $env{"form.${var}.widthunit"}; 
 2939:     $helper->{VARS}->{$var .'.heightunit'} = $env{"form.${var}.heightunit"}; 
 2940:     $helper->{VARS}->{$var .'.lmarginunit'} = $env{"form.${var}.lmarginunit"}; 
 2941: 
 2942:     my $error = '';
 2943: 
 2944:     # /^-?[0-9]+(\.[0-9]*)?$/ -> optional minus, at least on digit, followed 
 2945:     # by an optional period, followed by digits, ending the string
 2946: 
 2947:     if ($width !~  /^-?[0-9]+(\.[0-9]*)?$/) {
 2948:         $error .= "Invalid width; please type only a number.<br />\n";
 2949:     }
 2950:     if ($height !~  /^-?[0-9]+(\.[0-9]*)?$/) {
 2951:         $error .= "Invalid height; please type only a number.<br />\n";
 2952:     }
 2953:     if ($lmargin !~  /^-?[0-9]+(\.[0-9]*)?$/) {
 2954:         $error .= "Invalid left margin; please type only a number.<br />\n";
 2955:     }
 2956: 
 2957:     if (!$error) {
 2958:         Apache::lonhelper::getHelper()->changeState($self->{NEXTSTATE});
 2959:         return 1;
 2960:     } else {
 2961:         $self->{ERROR_MSG} = $error;
 2962:         return 0;
 2963:     }
 2964: }
 2965: 
 2966: 
 2967: 
 2968: __END__
 2969: 

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>