File:  [LON-CAPA] / loncom / interface / lonprintout.pm
Revision 1.381.2.1: download - view: text, annotated - select for diffs
Thu Sep 1 18:39:47 2005 UTC (18 years, 10 months ago) by albertel
Branches: version_2_0_X
CVS tags: version_2_0_1
Diff to branchpoint 1.381: preferred, unified
- backport 1.390

    1: #  The LearningOnline Network
    2: # Printout
    3: #
    4: # $Id: lonprintout.pm,v 1.381.2.1 2005/09/01 18:39:47 albertel 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: 
   45: my $resources_printed = '';
   46: 
   47: #   Compare two students by name.  The students are in the form
   48: #   returned by the helper:
   49: #      user:domain:section:last,   first:status
   50: #   This is a helper function for the perl sort built-in  therefore:
   51: # Implicit Inputs:
   52: #    $a     - The first element to compare (global)
   53: #    $b     - The second element to compare (global)
   54: # Returns:
   55: #   -1   - $a < $b
   56: #    0   - $a == $b
   57: #   +1   - $a > $b
   58: #   Note that the initial comparison is done on the last names with the
   59: #   first names only used to break the tie.
   60: #
   61: #
   62: sub compare_names {
   63:     #  First split the names up into the primary fields.
   64: 
   65:     my ($u1, $d1, $s1, $n1, $stat1) = split(/:/, $a);
   66:     my ($u2, $d2, $s2, $n2, $stat2) = split(/:/, $b);
   67: 
   68:     # Now split the last name and first name of each n:
   69:     #
   70: 
   71:     my ($l1,$f1) = split(/,/, $n1);
   72:     my ($l2,$f2) = split(/,/, $n2);
   73: 
   74:     # We don't bother to remove the leading/trailing whitespace from the
   75:     # firstname, unless the last names compare identical.
   76: 
   77:     if($l1 lt $l2) {
   78: 	return -1;
   79:     }
   80:     if($l1 gt $l2) {
   81: 	return  1;
   82:     }
   83: 
   84:     # Break the tie on the first name, but there are leading (possibly trailing
   85:     # whitespaces to get rid of first 
   86:     #
   87:     $f1 =~ s/^\s+//;		# Remove leading...
   88:     $f1 =~ s/\s+$//;		# Trailing spaces from first 1...
   89:     
   90:     $f2 =~ s/^\s+//;
   91:     $f2 =~ s/\s+$//;		# And the same for first 2...
   92: 
   93:     if($f1 lt $f2) {
   94: 	return -1;
   95:     }
   96:     if($f1 gt $f2) {
   97: 	return 1;
   98:     }
   99:     
  100:     #  Must be the same name.
  101: 
  102:     return 0;
  103: }
  104: 
  105: sub latex_header_footer_remove {
  106:     my $text = shift;
  107:     $text =~ s/\\end{document}//;
  108:     $text =~ s/\\documentclass([^&]*)\\begin{document}//;
  109:     return $text;
  110: }
  111: 
  112: 
  113: sub character_chart {
  114:     my $result = shift;	
  115:     $result =~ s/&\#0?0?(7|9);//g;
  116:     $result =~ s/&\#0?(10|13);//g;
  117:     $result =~ s/&\#0?32;/ /g;
  118:     $result =~ s/&\#0?33;/!/g;
  119:     $result =~ s/&(\#0?34|quot);/\"/g;
  120:     $result =~ s/&\#0?35;/\\\#/g;
  121:     $result =~ s/&\#0?36;/\\\$/g;
  122:     $result =~ s/&\#0?37;/\\%/g; 
  123:     $result =~ s/&(\#0?38|amp);/\\&/g; 
  124:     $result =~ s/&\#(0?39|146);/\'/g;
  125:     $result =~ s/&\#0?40;/(/g;
  126:     $result =~ s/&\#0?41;/)/g;
  127:     $result =~ s/&\#0?42;/\*/g;
  128:     $result =~ s/&\#0?43;/\+/g;
  129:     $result =~ s/&\#(0?44|130);/,/g;
  130:     $result =~ s/&\#0?45;/-/g;
  131:     $result =~ s/&\#0?46;/\./g;
  132:     $result =~ s/&\#0?47;/\//g;
  133:     $result =~ s/&\#0?48;/0/g;
  134:     $result =~ s/&\#0?49;/1/g;
  135:     $result =~ s/&\#0?50;/2/g;
  136:     $result =~ s/&\#0?51;/3/g;
  137:     $result =~ s/&\#0?52;/4/g;
  138:     $result =~ s/&\#0?53;/5/g;
  139:     $result =~ s/&\#0?54;/6/g;
  140:     $result =~ s/&\#0?55;/7/g;
  141:     $result =~ s/&\#0?56;/8/g;
  142:     $result =~ s/&\#0?57;/9/g;
  143:     $result =~ s/&\#0?58;/:/g;
  144:     $result =~ s/&\#0?59;/;/g;
  145:     $result =~ s/&(\#0?60|lt|\#139);/\$<\$/g;
  146:     $result =~ s/&\#0?61;/\\ensuremath\{=\}/g;
  147:     $result =~ s/&(\#0?62|gt|\#155);/\\ensuremath\{>\}/g;
  148:     $result =~ s/&\#0?63;/\?/g;
  149:     $result =~ s/&\#0?65;/A/g;
  150:     $result =~ s/&\#0?66;/B/g;
  151:     $result =~ s/&\#0?67;/C/g;
  152:     $result =~ s/&\#0?68;/D/g;
  153:     $result =~ s/&\#0?69;/E/g;
  154:     $result =~ s/&\#0?70;/F/g;
  155:     $result =~ s/&\#0?71;/G/g;
  156:     $result =~ s/&\#0?72;/H/g;
  157:     $result =~ s/&\#0?73;/I/g;
  158:     $result =~ s/&\#0?74;/J/g;
  159:     $result =~ s/&\#0?75;/K/g;
  160:     $result =~ s/&\#0?76;/L/g;
  161:     $result =~ s/&\#0?77;/M/g;
  162:     $result =~ s/&\#0?78;/N/g;
  163:     $result =~ s/&\#0?79;/O/g;
  164:     $result =~ s/&\#0?80;/P/g;
  165:     $result =~ s/&\#0?81;/Q/g;
  166:     $result =~ s/&\#0?82;/R/g;
  167:     $result =~ s/&\#0?83;/S/g;
  168:     $result =~ s/&\#0?84;/T/g;
  169:     $result =~ s/&\#0?85;/U/g;
  170:     $result =~ s/&\#0?86;/V/g;
  171:     $result =~ s/&\#0?87;/W/g;
  172:     $result =~ s/&\#0?88;/X/g;
  173:     $result =~ s/&\#0?89;/Y/g;
  174:     $result =~ s/&\#0?90;/Z/g;
  175:     $result =~ s/&\#0?91;/[/g;
  176:     $result =~ s/&\#0?92;/\\ensuremath\{\\setminus\}/g;
  177:     $result =~ s/&\#0?93;/]/g;
  178:     $result =~ s/&\#(0?94|136);/\\ensuremath\{\\wedge\}/g;
  179:     $result =~ s/&\#(0?95|138|154);/\\underline{\\makebox[2mm]{\\strut}}/g;
  180:     $result =~ s/&\#(0?96|145);/\`/g;
  181:     $result =~ s/&\#0?97;/a/g;
  182:     $result =~ s/&\#0?98;/b/g;
  183:     $result =~ s/&\#0?99;/c/g;
  184:     $result =~ s/&\#100;/d/g;
  185:     $result =~ s/&\#101;/e/g;
  186:     $result =~ s/&\#102;/f/g;
  187:     $result =~ s/&\#103;/g/g;
  188:     $result =~ s/&\#104;/h/g;
  189:     $result =~ s/&\#105;/i/g;
  190:     $result =~ s/&\#106;/j/g;
  191:     $result =~ s/&\#107;/k/g;
  192:     $result =~ s/&\#108;/l/g;
  193:     $result =~ s/&\#109;/m/g;
  194:     $result =~ s/&\#110;/n/g;
  195:     $result =~ s/&\#111;/o/g;
  196:     $result =~ s/&\#112;/p/g;
  197:     $result =~ s/&\#113;/q/g;
  198:     $result =~ s/&\#114;/r/g;
  199:     $result =~ s/&\#115;/s/g;
  200:     $result =~ s/&\#116;/t/g;
  201:     $result =~ s/&\#117;/u/g;
  202:     $result =~ s/&\#118;/v/g;
  203:     $result =~ s/&\#119;/w/g;
  204:     $result =~ s/&\#120;/x/g;
  205:     $result =~ s/&\#121;/y/g;
  206:     $result =~ s/&\#122;/z/g;
  207:     $result =~ s/&\#123;/\\{/g;
  208:     $result =~ s/&\#124;/\|/g;
  209:     $result =~ s/&\#125;/\\}/g;
  210:     $result =~ s/&\#126;/\~/g;
  211:     $result =~ s/&\#131;/\\textflorin /g;
  212:     $result =~ s/&\#132;/\"/g;
  213:     $result =~ s/&\#133;/\\ensuremath\{\\ldots\}/g;
  214:     $result =~ s/&\#134;/\\ensuremath\{\\dagger\}/g;
  215:     $result =~ s/&\#135;/\\ensuremath\{\\ddagger\}/g;
  216:     $result =~ s/&\#137;/\\textperthousand /g;
  217:     $result =~ s/&\#140;/{\\OE}/g;
  218:     $result =~ s/&\#147;/\`\`/g;
  219:     $result =~ s/&\#148;/\'\'/g;
  220:     $result =~ s/&\#149;/\\ensuremath\{\\bullet\}/g;
  221:     $result =~ s/&\#150;/--/g;
  222:     $result =~ s/&\#151;/---/g;
  223:     $result =~ s/&\#152;/\\ensuremath\{\\sim\}/g;
  224:     $result =~ s/&\#153;/\\texttrademark /g;
  225:     $result =~ s/&\#156;/\\oe/g;
  226:     $result =~ s/&\#159;/\\\"Y/g;
  227:     $result =~ s/&(\#160|nbsp);/~/g;
  228:     $result =~ s/&(\#161|iexcl);/!\`/g;
  229:     $result =~ s/&(\#162|cent);/\\textcent /g;
  230:     $result =~ s/&(\#163|pound);/\\pounds /g; 
  231:     $result =~ s/&(\#164|curren);/\\textcurrency /g;
  232:     $result =~ s/&(\#165|yen);/\\textyen /g;
  233:     $result =~ s/&(\#166|brvbar);/\\textbrokenbar /g;
  234:     $result =~ s/&(\#167|sect);/\\textsection /g;
  235:     $result =~ s/&(\#168|uml);/\\texthighdieresis /g;
  236:     $result =~ s/&(\#169|copy);/\\copyright /g;
  237:     $result =~ s/&(\#170|ordf);/\\textordfeminine /g;
  238:     $result =~ s/&(\#172|not);/\\ensuremath\{\\neg\}/g;
  239:     $result =~ s/&(\#173|shy);/ - /g;
  240:     $result =~ s/&(\#174|reg);/\\textregistered /g;
  241:     $result =~ s/&(\#175|macr);/\\ensuremath\{^{-}\}/g;
  242:     $result =~ s/&(\#176|deg);/\\ensuremath\{^{\\circ}\}/g;
  243:     $result =~ s/&(\#177|plusmn);/\\ensuremath\{\\pm\}/g;
  244:     $result =~ s/&(\#178|sup2);/\\ensuremath\{^2\}/g;
  245:     $result =~ s/&(\#179|sup3);/\\ensuremath\{^3\}/g;
  246:     $result =~ s/&(\#180|acute);/\\textacute /g;
  247:     $result =~ s/&(\#181|micro);/\\ensuremath\{\\mu\}/g;
  248:     $result =~ s/&(\#182|para);/\\P/g;
  249:     $result =~ s/&(\#183|middot);/\\ensuremath\{\\cdot\}/g;
  250:     $result =~ s/&(\#184|cedil);/\\c{\\strut}/g;
  251:     $result =~ s/&(\#185|sup1);/\\ensuremath\{^1\}/g;
  252:     $result =~ s/&(\#186|ordm);/\\textordmasculine /g;
  253:     $result =~ s/&(\#188|frac14);/\\textonequarter /g;
  254:     $result =~ s/&(\#189|frac12);/\\textonehalf /g;
  255:     $result =~ s/&(\#190|frac34);/\\textthreequarters /g;
  256:     $result =~ s/&(\#191|iquest);/?\`/g;   
  257:     $result =~ s/&(\#192|Agrave);/\\\`{A}/g;  
  258:     $result =~ s/&(\#193|Aacute);/\\\'{A}/g; 
  259:     $result =~ s/&(\#194|Acirc);/\\^{A}/g;
  260:     $result =~ s/&(\#195|Atilde);/\\~{A}/g;
  261:     $result =~ s/&(\#196|Auml);/\\\"{A}/g; 
  262:     $result =~ s/&(\#197|Aring);/{\\AA}/g;
  263:     $result =~ s/&(\#198|AElig);/{\\AE}/g;
  264:     $result =~ s/&(\#199|Ccedil);/\\c{c}/g;
  265:     $result =~ s/&(\#200|Egrave);/\\\`{E}/g;  
  266:     $result =~ s/&(\#201|Eacute);/\\\'{E}/g;    
  267:     $result =~ s/&(\#202|Ecirc);/\\^{E}/g;
  268:     $result =~ s/&(\#203|Euml);/\\\"{E}/g;
  269:     $result =~ s/&(\#204|Igrave);/\\\`{I}/g;
  270:     $result =~ s/&(\#205|Iacute);/\\\'{I}/g;    
  271:     $result =~ s/&(\#206|Icirc);/\\^{I}/g;
  272:     $result =~ s/&(\#207|Iuml);/\\\"{I}/g;    
  273:     $result =~ s/&(\#209|Ntilde);/\\~{N}/g;
  274:     $result =~ s/&(\#210|Ograve);/\\\`{O}/g;
  275:     $result =~ s/&(\#211|Oacute);/\\\'{O}/g;
  276:     $result =~ s/&(\#212|Ocirc);/\\^{O}/g;
  277:     $result =~ s/&(\#213|Otilde);/\\~{O}/g;
  278:     $result =~ s/&(\#214|Ouml);/\\\"{O}/g;    
  279:     $result =~ s/&(\#215|times);/\\ensuremath\{\\times\}/g;
  280:     $result =~ s/&(\#216|Oslash);/{\\O}/g;
  281:     $result =~ s/&(\#217|Ugrave);/\\\`{U}/g;    
  282:     $result =~ s/&(\#218|Uacute);/\\\'{U}/g;
  283:     $result =~ s/&(\#219|Ucirc);/\\^{U}/g;
  284:     $result =~ s/&(\#220|Uuml);/\\\"{U}/g;
  285:     $result =~ s/&(\#221|Yacute);/\\\'{Y}/g;
  286:     $result =~ s/&(\#223|szlig);/{\\ss}/g;
  287:     $result =~ s/&(\#224|agrave);/\\\`{a}/g;
  288:     $result =~ s/&(\#225|aacute);/\\\'{a}/g;
  289:     $result =~ s/&(\#226|acirc);/\\^{a}/g;
  290:     $result =~ s/&(\#227|atilde);/\\~{a}/g;
  291:     $result =~ s/&(\#228|auml);/\\\"{a}/g;
  292:     $result =~ s/&(\#229|aring);/{\\aa}/g;
  293:     $result =~ s/&(\#230|aelig);/{\\ae}/g;
  294:     $result =~ s/&(\#231|ccedil);/\\c{c}/g;
  295:     $result =~ s/&(\#232|egrave);/\\\`{e}/g;
  296:     $result =~ s/&(\#233|eacute);/\\\'{e}/g;
  297:     $result =~ s/&(\#234|ecirc);/\\^{e}/g;
  298:     $result =~ s/&(\#235|euml);/\\\"{e}/g;
  299:     $result =~ s/&(\#236|igrave);/\\\`{i}/g;
  300:     $result =~ s/&(\#237|iacute);/\\\'{i}/g;
  301:     $result =~ s/&(\#238|icirc);/\\^{i}/g;
  302:     $result =~ s/&(\#239|iuml);/\\\"{i}/g;
  303:     $result =~ s/&(\#240|eth);/\\ensuremath\{\\partial\}/g;
  304:     $result =~ s/&(\#241|ntilde);/\\~{n}/g;
  305:     $result =~ s/&(\#242|ograve);/\\\`{o}/g;
  306:     $result =~ s/&(\#243|oacute);/\\\'{o}/g;
  307:     $result =~ s/&(\#244|ocirc);/\\^{o}/g;
  308:     $result =~ s/&(\#245|otilde);/\\~{o}/g;
  309:     $result =~ s/&(\#246|ouml);/\\\"{o}/g;
  310:     $result =~ s/&(\#247|divide);/\\ensuremath\{\\div\}/g;
  311:     $result =~ s/&(\#248|oslash);/{\\o}/g;
  312:     $result =~ s/&(\#249|ugrave);/\\\`{u}/g; 
  313:     $result =~ s/&(\#250|uacute);/\\\'{u}/g;
  314:     $result =~ s/&(\#251|ucirc);/\\^{u}/g;
  315:     $result =~ s/&(\#252|uuml);/\\\"{u}/g;
  316:     $result =~ s/&(\#253|yacute);/\\\'{y}/g;
  317:     $result =~ s/&(\#255|yuml);/\\\"{y}/g;
  318:     $result =~ s/&\#952;/\\ensuremath\{\\theta\}/g;
  319: #Greek Alphabet
  320:     $result =~ s/&(alpha|\#945);/\\ensuremath\{\\alpha\}/g;
  321:     $result =~ s/&(beta|\#946);/\\ensuremath\{\\beta\}/g;
  322:     $result =~ s/&(gamma|\#947);/\\ensuremath\{\\gamma\}/g;
  323:     $result =~ s/&(delta|\#948);/\\ensuremath\{\\delta\}/g;
  324:     $result =~ s/&(epsilon|\#949);/\\ensuremath\{\\epsilon\}/g;
  325:     $result =~ s/&(zeta|\#950);/\\ensuremath\{\\zeta\}/g;
  326:     $result =~ s/&(eta|\#951);/\\ensuremath\{\\eta\}/g;
  327:     $result =~ s/&(theta|\#952);/\\ensuremath\{\\theta\}/g;
  328:     $result =~ s/&(iota|\#953);/\\ensuremath\{\\iota\}/g;
  329:     $result =~ s/&(kappa|\#954);/\\ensuremath\{\\kappa\}/g;
  330:     $result =~ s/&(lambda|\#955);/\\ensuremath\{\\lambda\}/g;
  331:     $result =~ s/&(mu|\#956);/\\ensuremath\{\\mu\}/g;
  332:     $result =~ s/&(nu|\#957);/\\ensuremath\{\\nu\}/g;
  333:     $result =~ s/&(xi|\#958);/\\ensuremath\{\\xi\}/g;
  334:     $result =~ s/&(omicron|\#959);/o/g;
  335:     $result =~ s/&(pi|\#960);/\\ensuremath\{\\pi\}/g;
  336:     $result =~ s/&(rho|\#961);/\\ensuremath\{\\rho\}/g;
  337:     $result =~ s/&(sigma|\#963);/\\ensuremath\{\\sigma\}/g;
  338:     $result =~ s/&(tau|\#964);/\\ensuremath\{\\tau\}/g;
  339:     $result =~ s/&(upsilon|\#965);/\\ensuremath\{\\upsilon\}/g;
  340:     $result =~ s/&(phi|\#966);/\\ensuremath\{\\phi\}/g;
  341:     $result =~ s/&(chi|\#967);/\\ensuremath\{\\chi\}/g;
  342:     $result =~ s/&(psi|\#968);/\\ensuremath\{\\psi\}/g;
  343:     $result =~ s/&(omega|\#969);/\\ensuremath\{\\omega\}/g;
  344:     $result =~ s/&(thetasym|\#977);/\\ensuremath\{\\vartheta\}/g;
  345:     $result =~ s/&(piv|\#982);/\\ensuremath\{\\varpi\}/g;
  346:     $result =~ s/&(Alpha|\#913);/A/g;
  347:     $result =~ s/&(Beta|\#914);/B/g;
  348:     $result =~ s/&(Gamma|\#915);/\\ensuremath\{\\Gamma\}/g;
  349:     $result =~ s/&(Delta|\#916);/\\ensuremath\{\\Delta\}/g;
  350:     $result =~ s/&(Epsilon|\#917);/E/g;
  351:     $result =~ s/&(Zeta|\#918);/Z/g;
  352:     $result =~ s/&(Eta|\#919);/H/g;
  353:     $result =~ s/&(Theta|\#920);/\\ensuremath\{\\Theta\}/g;
  354:     $result =~ s/&(Iota|\#921);/I/g;
  355:     $result =~ s/&(Kappa|\#922);/K/g;
  356:     $result =~ s/&(Lambda|\#923);/\\ensuremath\{\\Lambda\}/g;
  357:     $result =~ s/&(Mu|\#924);/M/g;
  358:     $result =~ s/&(Nu|\#925);/N/g;
  359:     $result =~ s/&(Xi|\#926);/\\ensuremath\{\\Xi\}/g;
  360:     $result =~ s/&(Omicron|\#927);/O/g;
  361:     $result =~ s/&(Pi|\#928);/\\ensuremath\{\\Pi\}/g;
  362:     $result =~ s/&(Rho|\#929);/P/g;
  363:     $result =~ s/&(Sigma|\#931);/\\ensuremath\{\\Sigma\}/g;
  364:     $result =~ s/&(Tau|\#932);/T/g;
  365:     $result =~ s/&(Upsilon|\#933);/\\ensuremath\{\\Upsilon\}/g;
  366:     $result =~ s/&(Phi|\#934);/\\ensuremath\{\\Phi\}/g;
  367:     $result =~ s/&(Chi|\#935);/X/g;
  368:     $result =~ s/&(Psi|\#936);/\\ensuremath\{\\Psi\}/g;
  369:     $result =~ s/&(Omega|\#937);/\\ensuremath\{\\Omega\}/g;
  370: #Arrows (extended HTML 4.01)
  371:     $result =~ s/&(larr|\#8592);/\\ensuremath\{\\leftarrow\}/g;
  372:     $result =~ s/&(uarr|\#8593);/\\ensuremath\{\\uparrow\}/g;
  373:     $result =~ s/&(rarr|\#8594);/\\ensuremath\{\\rightarrow\}/g;
  374:     $result =~ s/&(darr|\#8595);/\\ensuremath\{\\downarrow\}/g;
  375:     $result =~ s/&(harr|\#8596);/\\ensuremath\{\\leftrightarrow\}/g;
  376:     $result =~ s/&(lArr|\#8656);/\\ensuremath\{\\Leftarrow\}/g;
  377:     $result =~ s/&(uArr|\#8657);/\\ensuremath\{\\Uparrow\}/g;
  378:     $result =~ s/&(rArr|\#8658);/\\ensuremath\{\\Rightarrow\}/g;
  379:     $result =~ s/&(dArr|\#8659);/\\ensuremath\{\\Downarrow\}/g;
  380:     $result =~ s/&(hArr|\#8660);/\\ensuremath\{\\Leftrightarrow\}/g;
  381: #Mathematical Operators (extended HTML 4.01)
  382:     $result =~ s/&(forall|\#8704);/\\ensuremath\{\\forall\}/g;
  383:     $result =~ s/&(part|\#8706);/\\ensuremath\{\\partial\}/g;
  384:     $result =~ s/&(exist|\#8707);/\\ensuremath\{\\exists\}/g;
  385:     $result =~ s/&(empty|\#8709);/\\ensuremath\{\\emptyset\}/g;
  386:     $result =~ s/&(nabla|\#8711);/\\ensuremath\{\\nabla\}/g;
  387:     $result =~ s/&(isin|\#8712);/\\ensuremath\{\\in\}/g;
  388:     $result =~ s/&(notin|\#8713);/\\ensuremath\{\\notin\}/g;
  389:     $result =~ s/&(ni|\#8715);/\\ensuremath\{\\ni\}/g;
  390:     $result =~ s/&(prod|\#8719);/\\ensuremath\{\\prod\}/g;
  391:     $result =~ s/&(sum|\#8721);/\\ensuremath\{\\sum\}/g;
  392:     $result =~ s/&(minus|\#8722);/\\ensuremath\{-\}/g;
  393:     $result =~ s/–/\\ensuremath\{-\}/g;
  394:     $result =~ s/&(lowast|\#8727);/\\ensuremath\{*\}/g;
  395:     $result =~ s/&(radic|\#8730);/\\ensuremath\{\\surd\}/g;
  396:     $result =~ s/&(prop|\#8733);/\\ensuremath\{\\propto\}/g;
  397:     $result =~ s/&(infin|\#8734);/\\ensuremath\{\\infty\}/g;
  398:     $result =~ s/&(ang|\#8736);/\\ensuremath\{\\angle\}/g;
  399:     $result =~ s/&(and|\#8743);/\\ensuremath\{\\wedge\}/g;
  400:     $result =~ s/&(or|\#8744);/\\ensuremath\{\\vee\}/g;
  401:     $result =~ s/&(cap|\#8745);/\\ensuremath\{\\cap\}/g;
  402:     $result =~ s/&(cup|\#8746);/\\ensuremath\{\\cup\}/g;
  403:     $result =~ s/&(int|\#8747);/\\ensuremath\{\\int\}/g;
  404:     $result =~ s/&(sim|\#8764);/\\ensuremath\{\\sim\}/g;
  405:     $result =~ s/&(cong|\#8773);/\\ensuremath\{\\cong\}/g;
  406:     $result =~ s/&(asymp|\#8776);/\\ensuremath\{\\approx\}/g;
  407:     $result =~ s/&(ne|\#8800);/\\ensuremath\{\\not=\}/g;
  408:     $result =~ s/&(equiv|\#8801);/\\ensuremath\{\\equiv\}/g;
  409:     $result =~ s/&(le|\#8804);/\\ensuremath\{\\leq\}/g;
  410:     $result =~ s/&(ge|\#8805);/\\ensuremath\{\\geq\}/g;
  411:     $result =~ s/&(sub|\#8834);/\\ensuremath\{\\subset\}/g;
  412:     $result =~ s/&(sup|\#8835);/\\ensuremath\{\\supset\}/g;
  413:     $result =~ s/&(nsub|\#8836);/\\ensuremath\{\\not\\subset\}/g;
  414:     $result =~ s/&(sube|\#8838);/\\ensuremath\{\\subseteq\}/g;
  415:     $result =~ s/&(supe|\#8839);/\\ensuremath\{\\supseteq\}/g;
  416:     $result =~ s/&(oplus|\#8853);/\\ensuremath\{\\oplus\}/g;
  417:     $result =~ s/&(otimes|\#8855);/\\ensuremath\{\\otimes\}/g;
  418:     $result =~ s/&(perp|\#8869);/\\ensuremath\{\\perp\}/g;
  419:     $result =~ s/&(sdot|\#8901);/\\ensuremath\{\\cdot\}/g;
  420: #Geometric Shapes (extended HTML 4.01)
  421:     $result =~ s/&(loz|\#9674);/\\ensuremath\{\\Diamond\}/g;
  422: #Miscellaneous Symbols (extended HTML 4.01)
  423:     $result =~ s/&(spades|\#9824);/\\ensuremath\{\\spadesuit\}/g;
  424:     $result =~ s/&(clubs|\#9827);/\\ensuremath\{\\clubsuit\}/g;
  425:     $result =~ s/&(hearts|\#9829);/\\ensuremath\{\\heartsuit\}/g;
  426:     $result =~ s/&(diams|\#9830);/\\ensuremath\{\\diamondsuit\}/g;
  427:     return $result;
  428: }
  429: 
  430: 
  431:                   #width, height, oddsidemargin, evensidemargin, topmargin
  432: my %page_formats=
  433:     ('letter' => {
  434: 	 'book' => {
  435: 	     '1' => [ '7.1 in','9.8 in', '-0.57 in','-0.57 in','0.7 cm'],
  436: 	     '2' => ['3.66 in','9.8 in', '-0.57 in','-0.57 in','0.7 cm']
  437: 	 },
  438: 	 'album' => {
  439: 	     '1' => [ '8.8 in', '6.8 in','-40 pt in',  '-60 pt','1 cm'],
  440: 	     '2' => [ '4.4 in', '6.8 in','-0.5 in', '-1.5 in','3.5 in']
  441: 	 },
  442:      },
  443:      'legal' => {
  444: 	 'book' => {
  445: 	     '1' => ['7.1 in','13 in',,'-0.57 in','-0.57 in','-0.5 in'],
  446: 	     '2' => ['3.16 in','13 in','-0.57 in','-0.57 in','-0.5 in']
  447: 	 },
  448: 	 'album' => {
  449: 	     '1' => ['12 in','7.1 in',,'-0.57 in','-0.57 in','-0.5 in'],
  450:              '2' => ['6.0 in','7.1 in','-1 in','-1 in','5 in']
  451:           },
  452:      },
  453:      'tabloid' => {
  454: 	 'book' => {
  455: 	     '1' => ['9.8 in','16 in','-0.57 in','-0.57 in','-0.5 in'],
  456: 	     '2' => ['4.9 in','16 in','-0.57 in','-0.57 in','-0.5 in']
  457: 	 },
  458: 	 'album' => {
  459: 	     '1' => ['16 in','9.8 in','-0.57 in','-0.57 in','-0.5 in'],
  460: 	     '2' => ['16 in','4.9 in','-0.57 in','-0.57 in','-0.5 in']
  461:           },
  462:      },
  463:      'executive' => {
  464: 	 'book' => {
  465: 	     '1' => ['6.8 in','9 in','-0.57 in','-0.57 in','1.2 in'],
  466: 	     '2' => ['3.1 in','9 in','-0.57 in','-0.57 in','1.2 in']
  467: 	 },
  468: 	 'album' => {
  469: 	     '1' => [],
  470: 	     '2' => []
  471:           },
  472:      },
  473:      'a2' => {
  474: 	 'book' => {
  475: 	     '1' => [],
  476: 	     '2' => []
  477: 	 },
  478: 	 'album' => {
  479: 	     '1' => [],
  480: 	     '2' => []
  481:           },
  482:      },
  483:      'a3' => {
  484: 	 'book' => {
  485: 	     '1' => [],
  486: 	     '2' => []
  487: 	 },
  488: 	 'album' => {
  489: 	     '1' => [],
  490: 	     '2' => []
  491:           },
  492:      },
  493:      'a4' => {
  494: 	 'book' => {
  495: 	     '1' => ['176 mm','272 mm','-40 pt in','-60 pt','-0.5 in'],
  496: 	     '2' => [ '91 mm','272 mm','-40 pt in','-60 pt','-0.5 in']
  497: 	 },
  498: 	 'album' => {
  499: 	     '1' => ['8.5 in','7.7 in','-40 pt in','-60 pt','0 in'],
  500: 	     '2' => ['3.9 in','7.7 in','-40 pt in','-60 pt','0 in']
  501: 	 },
  502:      },
  503:      'a5' => {
  504: 	 'book' => {
  505: 	     '1' => [],
  506: 	     '2' => []
  507: 	 },
  508: 	 'album' => {
  509: 	     '1' => [],
  510: 	     '2' => []
  511:           },
  512:      },
  513:      'a6' => {
  514: 	 'book' => {
  515: 	     '1' => [],
  516: 	     '2' => []
  517: 	 },
  518: 	 'album' => {
  519: 	     '1' => [],
  520: 	     '2' => []
  521:           },
  522:      },
  523:      );
  524: 
  525: sub page_format {
  526: #
  527: #Supported paper format: "Letter [8 1/2x11 in]",      "Legal [8 1/2x14 in]",
  528: #                        "Ledger/Tabloid [11x17 in]", "Executive [7 1/2x10 in]",
  529: #                        "A2 [420x594 mm]",           "A3 [297x420 mm]",
  530: #                        "A4 [210x297 mm]",           "A5 [148x210 mm]",
  531: #                        "A6 [105x148 mm]"
  532: # 
  533:     my ($papersize,$layout,$numberofcolumns) = @_; 
  534:     return @{$page_formats{$papersize}->{$layout}->{$numberofcolumns}};
  535: }
  536: 
  537: 
  538: sub get_name {
  539:     my ($uname,$udom)=@_;
  540:     if (!defined($uname)) { $uname=$env{'user.name'}; }
  541:     if (!defined($udom)) { $udom=$env{'user.domain'}; }
  542:     my $plainname=&Apache::loncommon::plainname($uname,$udom);
  543:     if ($plainname=~/^\s*$/) { $plainname=$uname.'@'.$udom; }
  544:     $plainname=&Apache::lonxml::latex_special_symbols($plainname,'header');
  545:     return $plainname;
  546: }
  547: 
  548: sub get_course {
  549:     my $courseidinfo;
  550:     if (defined($env{'request.course.id'})) {
  551: 	$courseidinfo = &Apache::lonxml::latex_special_symbols(&Apache::lonnet::unescape($env{'course.'.$env{'request.course.id'}.'.description'}),'header');
  552:     }
  553:     return $courseidinfo;
  554: }
  555: 
  556: sub page_format_transformation {
  557:     my ($papersize,$layout,$numberofcolumns,$choice,$text,$assignment,$tableofcontents,$indexlist,$selectionmade) = @_; 
  558:     my ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin);
  559:     if ($selectionmade eq '4') {
  560: 	$assignment='Problems from the Whole Course';
  561:     } else {
  562: 	$assignment=&Apache::lonxml::latex_special_symbols($assignment,'header');
  563:     }
  564:     ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin) = &page_format($papersize,$layout,$numberofcolumns,$topmargin);
  565:     my $name = &get_name();
  566:     my $courseidinfo = &get_course();
  567:     if (defined($courseidinfo)) { $courseidinfo=' - '.$courseidinfo }
  568:     my $topmargintoinsert = '';
  569:     if ($topmargin ne '0') {$topmargintoinsert='\setlength{\topmargin}{'.$topmargin.'}';}
  570:     my $fancypagestatement='';
  571:     if ($numberofcolumns eq '2') {
  572: 	$fancypagestatement="\\fancyhead{}\\fancyhead[LO]{\\textbf{$name} $courseidinfo \\hfill \\thepage \\\\ \\textit{$assignment}}";
  573:     } else {
  574: 	$fancypagestatement="\\rhead{}\\chead{}\\lhead{\\textbf{$name} $courseidinfo \\hfill \\thepage \\\\ \\textit{$assignment}}";
  575:     }
  576:     if ($layout eq 'album') {
  577: 	    $text =~ s/\\begin{document}/\\setlength{\\oddsidemargin}{$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}$fancypagestatement\\begin{document}\\voffset=-0\.8 cm\\setcounter{page}{1}\n /;
  578:     } elsif ($layout eq 'book') {
  579: 	if ($choice ne 'All class print') { 
  580: 	    $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/;
  581: 	} else {
  582: 	    $text =~ s/\\pagestyle{fancy}\\rhead{}\\chead{}\s*\\begin{document}/\\textheight = $textheight\\oddsidemargin = $evenoffset\n\\evensidemargin = $evenoffset $topmargintoinsert\\textwidth= $textwidth\\newlength{\\minipagewidth}\n\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\\renewcommand{\\ref}{\\keephidden\}\\pagestyle{fancy}\\rhead{}\\chead{}\\begin{document}\\voffset=-0\.8cm\n\\setcounter{page}{1}  \\vskip 5 mm\n /;
  583: 	}
  584: 	if ($papersize eq 'a4') {
  585: 	    $text =~ s/(\\begin{document})/$1\\special{papersize=210mm,297mm}/;
  586: 	}
  587:     }
  588:     if ($tableofcontents eq 'yes') {$text=~s/(\\setcounter\{page\}\{1\})/$1 \\tableofcontents\\newpage /;}
  589:     if ($indexlist eq 'yes') {
  590: 	$text=~s/(\\begin{document})/\\makeindex $1/;
  591: 	$text=~s/(\\end{document})/\\strut\\\\\\strut\\printindex $1/;
  592:     }
  593:     return $text;
  594: }
  595: 
  596: 
  597: sub page_cleanup {
  598:     my $result = shift;	
  599:  
  600:     $result =~ m/\\end{document}(\d*)$/;
  601:     my $number_of_columns = $1;
  602:     my $insert = '{';
  603:     for (my $id=1;$id<=$number_of_columns;$id++) { $insert .='l'; }
  604:     $insert .= '}';
  605:     $result =~ s/(\\begin{longtable})INSERTTHEHEADOFLONGTABLE\\endfirsthead\\endhead/$1$insert/g;
  606:     $result =~ s/&\s*REMOVETHEHEADOFLONGTABLE\\\\/\\\\/g;
  607:     return $result,$number_of_columns;
  608: }
  609: 
  610: 
  611: sub details_for_menu {
  612:     my ($helper)=@_;
  613:     my $postdata=$env{'form.postdata'};
  614:     if (!$postdata) { $postdata=$helper->{VARS}{'postdata'}; }
  615:     my $name_of_resource = &Apache::lonnet::gettitle($postdata);
  616:     my $symbolic = &Apache::lonnet::symbread($postdata);
  617:     my ($map,$id,$resource)=&Apache::lonnet::decode_symb($symbolic);
  618:     $map=&Apache::lonnet::clutter($map);
  619:     my $name_of_sequence = &Apache::lonnet::gettitle($map);
  620:     if ($name_of_sequence =~ /^\s*$/) {
  621: 	$map =~ m|([^/]+)$|;
  622: 	$name_of_sequence = $1;
  623:     }
  624:     my $name_of_map = &Apache::lonnet::gettitle($env{'request.course.uri'});
  625:     if ($name_of_map =~ /^\s*$/) {
  626: 	$env{'request.course.uri'} =~ m|([^/]+)$|;
  627: 	$name_of_map = $1;
  628:     }
  629:     return ($name_of_resource,$name_of_sequence,$name_of_map);
  630: }
  631: 
  632: 
  633: sub latex_corrections {
  634: 
  635:     my ($number_of_columns,$result,$selectionmade) = @_;
  636: 
  637: #    $result =~ s/\\includegraphics{/\\includegraphics\[width=\\minipagewidth\]{/g;
  638:     $result =~ s/\$number_of_columns/$number_of_columns/g;
  639:     if ($selectionmade ne '1') {
  640: 	$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/;
  641:     } else {
  642: 	$result =~ s/(\\end{document})/\\strut\\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/;
  643:     }
  644:     $result =~ s/(\\end{longtable}\s*)(\\strut\\newline\\noindent\\makebox\[\\textwidth\/$number_of_columns\]\[b\]{\\hrulefill})/$2$1/g;
  645:     $result =~ s/(\\end{longtable}\s*)\\strut\\newline/$1/g;
  646: #-- LaTeX corrections     
  647:     my $first_comment = index($result,'<!--',0);
  648:     while ($first_comment != -1) {
  649: 	my $end_comment = index($result,'-->',$first_comment);
  650: 	substr($result,$first_comment,$end_comment-$first_comment+3) = '';
  651: 	$first_comment = index($result,'<!--',$first_comment);
  652:     }
  653:     $result =~ s/^\s+$//gm; #remove empty lines
  654:     #removes more than one empty space
  655:     $result =~ s|(\s\s+)|($1=~/[\n\r]/)?"\n":" "|ge;
  656:     $result =~ s/\\\\\s*\\vskip/\\vskip/gm;
  657:     $result =~ s/\\\\\s*\\noindent\s*(\\\\)+/\\\\\\noindent /g;
  658:     $result =~ s/{\\par }\s*\\\\/\\\\/gm;
  659:     $result =~ s/\\\\\s+\[/ \[/g;
  660:     #conversion of html characters to LaTeX equivalents
  661:     if ($result =~ m/&(\w+|#\d+);/) {
  662: 	$result = &character_chart($result);
  663:     }
  664:     $result =~ s/(\\end{tabular})\s*\\vskip 0 mm/$1/g;
  665:     $result =~ s/(\\begin{enumerate})\s*\\noindent/$1/g;
  666: 
  667:     return $result;
  668: }
  669: 
  670: 
  671: sub index_table {
  672:     my $currentURL = shift;
  673:     my $insex_string='';
  674:     $currentURL=~s/\.([^\/+])$/\.$1\.meta/;
  675:     $insex_string=&Apache::lonnet::metadata($currentURL,'keywords');
  676:     return $insex_string;
  677: }
  678: 
  679: 
  680: sub IndexCreation {
  681:     my ($texversion,$currentURL)=@_;
  682:     my @key_words=split(/,/,&index_table($currentURL));
  683:     my $chunk='';
  684:     my $st=index $texversion,'\addcontentsline{toc}{subsection}{';
  685:     if ($st>0) {
  686: 	for (my $i=0;$i<3;$i++) {$st=(index $texversion,'}',$st+1);}
  687: 	$chunk=substr($texversion,0,$st+1);
  688: 	substr($texversion,0,$st+1)=' ';
  689:     }
  690:     foreach my $key_word (@key_words) {
  691: 	if ($key_word=~/\S+/) {
  692: 	    $texversion=~s/\b($key_word)\b/$1 \\index{$key_word} /i;
  693: 	}
  694:     }			
  695:     if ($st>0) {substr($texversion,0,1)=$chunk;}
  696:     return $texversion;
  697: }
  698: 
  699: sub print_latex_header {
  700:     my $mode=shift;
  701:     my $output='\documentclass[letterpaper]{article}';
  702:     if (($mode eq 'batchmode') || (!$env{'request.role.adv'})) {
  703: 	$output.='\batchmode';
  704:     }
  705:     $output.='\newcommand{\keephidden}[1]{}\renewcommand{\deg}{$^{\circ}$}'."\n".
  706: 	     '\usepackage{longtable}\usepackage{textcomp}\usepackage{makeidx}'."\n".
  707: 	     '\usepackage[dvips]{graphicx}\usepackage{epsfig}'."\n".
  708: 	     '\usepackage{picins}\usepackage{calc}'."\n".
  709: 	     '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}'."\n".
  710: 	     '\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}'."\n".
  711: 	     '\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}'."\n".
  712: 	     '\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}'."\n".
  713: 	     '\setlength{\abovedisplayshortskip}{-0.04in}'."\n".
  714: 	     '\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'."\n".
  715: 	     '\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large'."\n".
  716: 	     '\textbf{Index}} \newline \setlength{\rightmargin}{0in}'."\n".
  717: 	     '\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}'."\n".
  718: 	     '\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}'."\n".
  719: 	     '\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}'."\n".
  720: 	     '\setlength{\abovedisplayshortskip}{-0.04in}'."\n".
  721: 	     '\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}\begin{document}'."\n";
  722:     return $output;	     
  723: }
  724: 
  725: sub path_to_problem {
  726:     my ($urlp,$colwidth)=@_;
  727:     my $newurlp = '';
  728:     $colwidth=~s/\s*mm\s*$//;
  729: #characters average about 2 mm in width
  730:     if (length($urlp)*2 > $colwidth) {
  731: 	my @elements = split '/',$urlp;
  732: 	my $curlength=0;
  733: 	foreach my $element (@elements) {
  734: 	    if ($curlength+(length($element)*2) > $colwidth) {
  735: 		$newurlp .=  '|\vskip -1 mm \noindent \verb|';
  736: 		$curlength=0;
  737: 	    } else {
  738: 		$curlength+=length($element)*2;
  739: 	    }
  740: 	    $newurlp.='/'.$element;
  741: 	}
  742:     } else {
  743: 	$newurlp=$urlp;
  744:     }
  745:     return '{\small\noindent\verb|'.$newurlp.'|\vskip 0 mm}';
  746: }
  747: 
  748: sub recalcto_mm {
  749:     my $textwidth=shift;
  750:     my $LaTeXwidth;
  751:     if ($textwidth=~/(-?\d+\.?\d*)\s*cm/) {
  752: 	$LaTeXwidth = $1*10;
  753:     } elsif ($textwidth=~/(-?\d+\.?\d*)\s*mm/) {
  754: 	$LaTeXwidth = $1;
  755:     } elsif ($textwidth=~/(-?\d+\.?\d*)\s*in/) {
  756: 	$LaTeXwidth = $1*25.4;
  757:     }
  758:     $LaTeXwidth.=' mm';
  759:     return $LaTeXwidth;
  760: }
  761: 
  762: sub get_textwidth {
  763:     my ($helper,$LaTeXwidth)=@_;
  764:     my $textwidth=$LaTeXwidth;
  765:     if ($helper->{'VARS'}->{'pagesize.width'}=~/\d+/ &&
  766: 	$helper->{'VARS'}->{'pagesize.widthunit'}=~/\w+/) {
  767: 	$textwidth=&recalcto_mm($helper->{'VARS'}->{'pagesize.width'}.' '.
  768: 				$helper->{'VARS'}->{'pagesize.widthunit'});
  769:     }
  770:     return $textwidth;
  771: }
  772: 
  773: 
  774: sub unsupported {
  775:     my ($currentURL,$mode)=@_;
  776:     if ($mode ne '') {$mode='\\'.$mode}
  777:     my $result.= &print_latex_header($mode);
  778:     if ($currentURL=~/\/ext\//) {
  779: 	$result.=' \strut \\\\ THIS IS EXTERNAL RESOURCE WITH URL \strut \\\\ '.$currentURL.' ';
  780:     } else {
  781: 	$result.=$currentURL;
  782:     }
  783:     $result.= '\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill} \end{document}';
  784:     return $result;
  785: }
  786: 
  787: 
  788: #
  789: #   Retrieve the hash of page breaks.
  790: #
  791: #  Inputs:
  792: #    helper   - reference to helper object.
  793: #  Outputs
  794: #    A reference to a page break hash.
  795: #
  796: #
  797: 
  798: sub get_page_breaks  {
  799:     my ($helper) = @_;
  800:     my %page_breaks;
  801:     
  802:     foreach my $break (split /\|\|\|/, $helper->{'VARS'}->{'FINISHPAGE'}) {
  803: 	$page_breaks{$break} = 1;
  804:     }
  805:     
  806:     return %page_breaks;
  807: }
  808: 
  809: sub output_data {
  810:     my ($r,$helper,$rparmhash) = @_;
  811:     my %parmhash = %$rparmhash;
  812:     my $html=&Apache::lonxml::xmlbegin();
  813:     my $bodytag=&Apache::loncommon::bodytag('Preparing Printout');
  814:     $r->print(<<ENDPART);
  815: $html
  816: <head>
  817: <script type="text/javascript" language="Javascript">
  818:     var editbrowser;
  819:     function openbrowser(formname,elementname,only,omit) {
  820:         var url = '/res/?';
  821:         if (editbrowser == null) {
  822:             url += 'launch=1&';
  823:         }
  824:         url += 'catalogmode=interactive&';
  825:         url += 'mode=parmset&';
  826:         url += 'form=' + formname + '&';
  827:         if (only != null) {
  828:             url += 'only=' + only + '&';
  829:         } 
  830:         if (omit != null) {
  831:             url += 'omit=' + omit + '&';
  832:         }
  833:         url += 'element=' + elementname + '';
  834:         var title = 'Browser';
  835:         var options = 'scrollbars=1,resizable=1,menubar=0';
  836:         options += ',width=700,height=600';
  837:         editbrowser = open(url,title,options,'1');
  838:         editbrowser.focus();
  839:     }
  840: </script>
  841: <title>LON-CAPA output for printing</title>
  842: </head>
  843: $bodytag
  844: Please stand by while processing your print request, this may take some time ...
  845: ENDPART
  846: 
  847: 
  848: 
  849:     # fetch the pagebreaks and store them in the course environment
  850:     # The page breaks will be pulled into the hash %page_breaks which is
  851:     # indexed by symb and contains 1's for each break.
  852: 
  853:     $env{'form.pagebreaks'}  = $helper->{'VARS'}->{'FINISHPAGE'};
  854:     $env{'form.lastprinttype'} = $helper->{'VARS'}->{'PRINT_TYPE'}; 
  855:     &Apache::loncommon::store_course_settings('print',
  856: 					      {'pagebreaks'    => 'scalar',
  857: 					       'lastprinttype' => 'scalar'});
  858: 
  859:     my %page_breaks  = &get_page_breaks($helper);
  860: 
  861:     my $format_from_helper = $helper->{'VARS'}->{'FORMAT'};
  862:     my ($result,$selectionmade) = ('','');
  863:     my $number_of_columns = 1; #used only for pages to determine the width of the cell
  864:     my @temporary_array=split /\|/,$format_from_helper;
  865:     my ($laystyle,$numberofcolumns,$papersize)=@temporary_array;
  866:     if ($laystyle eq 'L') {
  867: 	$laystyle='album';
  868:     } else {
  869: 	$laystyle='book';
  870:     }
  871:     my ($textwidth,$textheight,$oddoffset,$evenoffset) = &page_format($papersize,$laystyle,$numberofcolumns);
  872:     my $assignment =  $env{'form.assignment'};
  873:     my $LaTeXwidth=&recalcto_mm($textwidth); 
  874:     my @print_array=();
  875:     my @student_names=();
  876: 
  877:     #  Common settings for the %form has:
  878:     # In some cases these settings get overriddent by specific cases, but the
  879:     # settings are common enough to make it worthwhile factoring them out
  880:     # here.
  881:     #
  882:     my %form;
  883:     $form{'grade_target'} = 'tex';
  884:     $form{'textwidth'}    = &get_textwidth($helper, $LaTeXwidth);
  885: 
  886:     # If form.showallfoils is set, then request all foils be shown:
  887:     # privilege will be enforced both by not allowing the 
  888:     # check box selecting this option to be presnt unless it's ok,
  889:     # and by lonresponse's priv. check.
  890:     # The if is here because lonresponse.pm only cares that
  891:     # showallfoils is defined, not what the value is.
  892: 
  893:     if ($helper->{'VARS'}->{'showallfoils'} eq "1") { 
  894: 	$form{'showallfoils'} = $helper->{'VARS'}->{'showallfoils'};
  895:     }
  896: 
  897:     if ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'current_document') {
  898:       #-- single document - problem, page, html, xml, ...
  899: 	my ($currentURL,$cleanURL);
  900: 
  901: 	if ($helper->{'VARS'}->{'construction'} ne '1') {
  902:             #prints published resource
  903: 	    $currentURL=$helper->{'VARS'}->{'postdata'};
  904: 	    $cleanURL=&Apache::lonenc::check_decrypt($currentURL);
  905: 	} else {
  906:             #prints resource from the construction space
  907: 	    $currentURL='/'.$helper->{'VARS'}->{'filename'};
  908: 	    if ($currentURL=~/([^?]+)/) {$currentURL=$1;}
  909: 	    $cleanURL=$currentURL;
  910: 	}
  911: 	$selectionmade = 1;
  912: 	if ($cleanURL=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
  913: 	    my $rndseed=time;
  914: 	    my $texversion='';
  915: 	    if ($helper->{'VARS'}->{'ANSWER_TYPE'} ne 'only') {
  916: 		my %moreenv;
  917: 		$moreenv{'request.filename'}=$cleanURL;
  918: 		if ($helper->{'VARS'}->{'style_file'}=~/\w/) {
  919: 		    $moreenv{'construct.style'}=$helper->{'VARS'}->{'style_file'};
  920: 		    my $dom = $env{'user.domain'};
  921: 		    my $user = $env{'user.name'};
  922: 		    my $put_result = &Apache::lonnet::put('environment',{'construct.style'=>$helper->{'VARS'}->{'style_file'}},$dom,$user);
  923: 		}
  924:                 if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {$form{'problemtype'}='exam';}
  925: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
  926: 		$form{'suppress_tries'}=$parmhash{'suppress_tries'};
  927: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
  928: 		$form{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
  929: 		if ($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') {$form{'problem_split'}='yes';}
  930: 		if ($helper->{'VARS'}->{'curseed'}) {
  931: 		    $rndseed=$helper->{'VARS'}->{'curseed'};
  932: 		}
  933: 		$form{'rndseed'}=$rndseed;
  934: 		&Apache::lonnet::appenv(%moreenv);
  935: 		&Apache::lonnet::delenv('form.counter');
  936: 		&Apache::lonxml::init_counter();
  937: 		$resources_printed .= $currentURL.':';
  938: 		$texversion.=&Apache::lonnet::ssi($currentURL,%form);
  939: 		&Apache::lonnet::delenv('form.counter');
  940: 		&Apache::lonnet::delenv('request.filename');
  941: 	    }
  942: 	    if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
  943: 	       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
  944: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
  945: 		$form{'grade_target'}='answer';
  946: 		$form{'answer_output_mode'}='tex';
  947: 		$form{'rndseed'}=$rndseed;
  948: 		$resources_printed .= $currentURL.':';
  949: 		my $answer=&Apache::lonnet::ssi($currentURL,%form);
  950: 		if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
  951: 		    $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
  952: 		} else {
  953: 		    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
  954: 		    if ($helper->{'VARS'}->{'construction'} ne '1') {
  955: 			$texversion.='\vskip 0 mm \noindent\textbf{'.&Apache::lonnet::gettitle($helper->{'VARS'}->{'symb'}).'}\vskip 0 mm ';
  956: 			$texversion.=&path_to_problem($cleanURL,$LaTeXwidth);
  957: 		    } else {
  958: 			$texversion.='\vskip 0 mm \noindent\textbf{Prints from construction space - there is no title.}\vskip 0 mm ';
  959: 			my $URLpath=$cleanURL;
  960: 			$URLpath=~s/~([^\/]+)/public_html\/$1\/$1/;
  961: 			$texversion.=&path_to_problem ($URLpath,$LaTeXwidth);
  962: 		    }
  963: 		    $texversion.='\vskip 1 mm '.$answer.'\end{document}';
  964: 		}
  965: 	    }
  966: 	    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
  967: 		$texversion=&IndexCreation($texversion,$currentURL);
  968: 	    }
  969: 	    if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
  970: 		$texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$currentURL| \\strut\\\\\\strut /;
  971: 
  972: 	    }
  973: 	    $result .= $texversion;
  974: 	    if ($currentURL=~m/\.page\s*$/) {
  975: 		($result,$number_of_columns) = &page_cleanup($result);
  976: 	    }
  977:         } elsif ($currentURL=~/\.sequence$/ && $helper->{'VARS'}->{'construction'} eq '1') {
  978:             #printing content of sequence from the construction space	
  979: 	    my $flag_latex_header_remove = 'NO'; 
  980: 	    my $rndseed=time;
  981: 	    if ($helper->{'VARS'}->{'curseed'}) {
  982: 		$rndseed=$helper->{'VARS'}->{'curseed'};
  983: 	    }
  984: 	    $currentURL=~s|\/~([^\/]+)\/|\/home\/$1\/public_html\/|;
  985: 	    my $errtext=&Apache::lonratedt::mapread($currentURL);
  986: 	    for (my $member=0;$member<=$#Apache::lonratedt::order;$member++) {
  987: 		$Apache::lonratedt::resources[$Apache::lonratedt::order[$member]]=~/^([^:]*):([^:]*):/;
  988: 		my $urlp=$2;
  989: 		if ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library|xml|html|htm|xhtml|xhtm)$/) {
  990: 		    my $texversion='';
  991: 		    if ($helper->{'VARS'}->{'ANSWER_TYPE'} ne 'only') {
  992: 			$form{'problem_split'}=$parmhash{'problem_stream_switch'};
  993: 			$form{'suppress_tries'}=$parmhash{'suppress_tries'};
  994: 			$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
  995: 			$form{'rndseed'}=$rndseed;
  996: 			$resources_printed .=$urlp.':';
  997: 			$texversion=&Apache::lonnet::ssi($urlp,%form);
  998: 		    }
  999: 		    if((($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 1000: 		       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) && 
 1001: 		       ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library|page)$/)) {
 1002: 			#  Don't permanently modify %$form...
 1003: 			my %answerform = %form;
 1004: 			$answerform{'grade_target'}='answer';
 1005: 			$answerform{'answer_output_mode'}='tex';
 1006: 			$answerform{'rndseed'}=$rndseed;
 1007: 			$answerform{'problem_split'}=$parmhash{'problem_stream_switch'};
 1008:                         if ($urlp=~/\/res\//) {$env{'request.state'}='published';}
 1009: 			$resources_printed .= $urlp.':';
 1010: 			my $answer=&Apache::lonnet::ssi($urlp,%answerform);
 1011: 			if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 1012: 			    $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
 1013: 			} else {
 1014: 			    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 1015: 			    $texversion.='\vskip 0 mm \noindent\textbf{'.&Apache::lonnet::gettitle($helper->{'VARS'}->{'symb'}).'}\vskip 0 mm ';
 1016: 			    $texversion.=&path_to_problem ($currentURL,$LaTeXwidth);
 1017: 			    $texversion.='\vskip 1 mm '.$answer.'\end{document}';
 1018: 			}
 1019: 		    }
 1020: 		    if ($flag_latex_header_remove ne 'NO') {
 1021: 			$texversion = &latex_header_footer_remove($texversion);
 1022: 		    } else {
 1023: 			$texversion =~ s/\\end{document}//;
 1024: 		    }
 1025: 		    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 1026: 			$texversion=&IndexCreation($texversion,$urlp);
 1027: 		    }
 1028: 		    if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URpL'} eq 'yes') {
 1029: 			$texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$urlp| \\strut\\\\\\strut /;
 1030: 		    }
 1031: 		    $result.=$texversion;
 1032: 		    $flag_latex_header_remove = 'YES';
 1033: 		} elsif ($urlp=~/\.(sequence|page)$/) {
 1034: 		    $result.='\strut\newline\noindent Sequence/page '.$urlp.'\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent ';
 1035: 		}  
 1036: 	    }
 1037: 	    if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\begin{document})/$1 \\fbox\{RANDOM SEED IS $rndseed\} /;}
 1038: 	    $result .= '\end{document}';   
 1039: 	} elsif ($cleanURL=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) { 
 1040: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 1041: 		if ($currentURL=~/\/syllabus$/) {$currentURL=~s/\/res//;}
 1042: 		$resources_printed .= $currentURL.':';
 1043: 		my $texversion=&Apache::lonnet::ssi($currentURL,%form);
 1044: 		$result .= $texversion;
 1045: 	} else {
 1046: 	    $result.=&unsupported($currentURL,$helper->{'VARS'}->{'LATEX_TYPE'});
 1047: 	}
 1048:     } elsif (($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems')       or
 1049:              ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems_pages') or
 1050:              ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_problems')       or
 1051: 	     ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_resources')      or # BUGBUG
 1052: 	     ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'select_sequences')) { 
 1053:         #-- produce an output string
 1054: 	if ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems') {
 1055: 	    $selectionmade = 2;
 1056: 	} elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems_pages') {
 1057: 	    $selectionmade = 3;
 1058: 	} elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_problems') {
 1059: 	    $selectionmade = 4;
 1060: 	} elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_resources') {  #BUGBUG
 1061: 	    $selectionmade = 4;
 1062: 	} elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'select_sequences') {
 1063: 	    $selectionmade = 7;
 1064: 	}
 1065: 	$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 1066: 	$form{'suppress_tries'}=$parmhash{'suppress_tries'};
 1067: 	$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 1068: 	$form{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
 1069: 	if ($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') {$form{'problem_split'}='yes';}
 1070: 	my $flag_latex_header_remove = 'NO';
 1071: 	my $flag_page_in_sequence = 'NO';
 1072: 	my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
 1073: 	my $prevassignment='';
 1074: 	&Apache::lonnet::delenv('form.counter');
 1075: 	&Apache::lonxml::init_counter();
 1076: 	for (my $i=0;$i<=$#master_seq;$i++) {
 1077: 
 1078: 	    # Note due to document structure, not allowed to put \newpage
 1079: 	    # prior to the first resource
 1080: 
 1081: 	    if (defined $page_breaks{$master_seq[$i]}) {
 1082: 		if($i != 0) {
 1083: 		    $result.="\\newpage\n";
 1084: 		}
 1085: 	    }
 1086: 	    my (undef,undef,$urlp)=&Apache::lonnet::decode_symb($master_seq[$i]);
 1087: 	    $urlp=&Apache::lonnet::clutter($urlp);
 1088: 	    $form{'symb'}=$master_seq[$i];
 1089: 	    my ($sequence)=&Apache::lonnet::decode_symb($master_seq[$i]);
 1090: 	    my $assignment=&Apache::lonxml::latex_special_symbols(&Apache::lonnet::gettitle($sequence),'header'); #tittle of the assignment which contains this problem
 1091: 	    if ($selectionmade==7) {$helper->{VARS}->{'assignment'}=$assignment;}
 1092: 	    if ($i==0) {$prevassignment=$assignment;}
 1093: 	    my $texversion='';
 1094: 	    if ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
 1095: 		$resources_printed .= $urlp.':';
 1096: 		$texversion.=&Apache::lonnet::ssi($urlp,%form);
 1097: 		if ($urlp=~/\.page$/) {
 1098: 		    ($texversion,my $number_of_columns_page) = &page_cleanup($texversion);
 1099: 		    if ($number_of_columns_page > $number_of_columns) {$number_of_columns=$number_of_columns_page;} 
 1100: 		    $texversion =~ s/\\end{document}\d*/\\end{document}/;
 1101: 		    $flag_page_in_sequence = 'YES';
 1102: 		} 
 1103: 		my $lonidsdir=$r->dir_config('lonIDsDir');
 1104: 		my $envfile=$env{'user.environment'};
 1105: 		$envfile=~/\/([^\/]+)\.id$/;
 1106: 		$envfile=$1;
 1107: 		&Apache::lonnet::transfer_profile_to_env($lonidsdir,$envfile);
 1108: 		my $current_counter=$env{'form.counter'};
 1109: 		if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 1110: 		   ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 1111: 		    #  Don't permanently pervert the %form hash
 1112: 		    my %answerform = %form;
 1113: 		    $answerform{'grade_target'}='answer';
 1114: 		    $answerform{'answer_output_mode'}='tex';
 1115: 		    $resources_printed .= $urlp.':';
 1116: 		    my $answer=&Apache::lonnet::ssi($urlp,%answerform);
 1117: 		    &Apache::lonnet::appenv(('form.counter' => $current_counter));
 1118: 		    if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 1119: 			$texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
 1120: 		    } else {
 1121: 			if ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library)$/) {
 1122: 			    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 1123: 			    $texversion.='\vskip 0 mm \noindent\textbf{'.&Apache::lonnet::gettitle($urlp).'}\vskip 0 mm ';
 1124: 			    $texversion.=&path_to_problem ($urlp,$LaTeXwidth);
 1125: 			    $texversion.='\vskip 1 mm '.$answer;
 1126: 			} else {
 1127: 			    $texversion='';
 1128: 			}
 1129: 		    }
 1130: 		}
 1131: 		if ($flag_latex_header_remove ne 'NO') {
 1132: 		    $texversion = &latex_header_footer_remove($texversion);
 1133: 		} else {
 1134: 		    $texversion =~ s/\\end{document}//;
 1135: 		}
 1136: 		if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 1137: 		    $texversion=&IndexCreation($texversion,$urlp);
 1138: 		}
 1139: 		if (($selectionmade == 4) and ($assignment ne $prevassignment)) {
 1140: 		    my $name = &get_name();
 1141: 		    my $courseidinfo = &get_course();
 1142: 		    if (defined($courseidinfo)) { $courseidinfo=' - '.$courseidinfo }
 1143: 		    $prevassignment=$assignment;
 1144: 		    $result .='\newpage \noindent\parbox{\minipagewidth}{\noindent\\lhead{\\textit{\\textbf{'.$name.'}}'.$courseidinfo.' \\hfill \\thepage \\\\ \\textit{'.$assignment.'}}} \vskip 5 mm ';
 1145: 		}
 1146: 		$result .= $texversion;
 1147: 		$flag_latex_header_remove = 'YES';   
 1148: 	    } elsif ($urlp=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) { 
 1149: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 1150: 		if ($urlp=~/\/syllabus$/) {$urlp=~s/\/res//;}
 1151: 		$resources_printed .= $urlp.':';
 1152: 		my $texversion=&Apache::lonnet::ssi($urlp,%form);
 1153: 		if ($flag_latex_header_remove ne 'NO') {
 1154: 		    $texversion = &latex_header_footer_remove($texversion);
 1155: 		} else {
 1156: 		    $texversion =~ s/\\end{document}/\\vskip 0\.5mm\\noindent\\makebox\[\\textwidth\/\$number_of_columns\]\[b\]\{\\hrulefill\}/;
 1157: 		}
 1158: 		$result .= $texversion;
 1159: 		$flag_latex_header_remove = 'YES'; 
 1160: 	    } else {
 1161: 		$texversion=&unsupported($urlp,$helper->{'VARS'}->{'LATEX_TYPE'});
 1162: 		if ($flag_latex_header_remove ne 'NO') {
 1163: 		    $texversion = &latex_header_footer_remove($texversion);
 1164: 		} else {
 1165: 		    $texversion =~ s/\\end{document}//;
 1166: 		}
 1167: 		$result .= $texversion;
 1168: 		$flag_latex_header_remove = 'YES';   
 1169: 	    }	    
 1170: 	    if (&Apache::loncommon::connection_aborted($r)) { last; }
 1171: 	}
 1172: 	&Apache::lonnet::delenv('form.counter');
 1173: 	if ($flag_page_in_sequence eq 'YES') {
 1174: 	    $result =~ s/\\usepackage{calc}/\\usepackage{calc}\\usepackage{longtable}/;
 1175: 	}	
 1176: 	$result .= '\end{document}';
 1177:      } elsif (($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_for_students') ||
 1178: 	      ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'resources_for_students')){
 1179: 
 1180: 
 1181:      #-- prints assignments for whole class or for selected students  
 1182: 	 my $type;
 1183: 	 if ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_for_students') {
 1184: 	     $selectionmade=5;
 1185: 	     $type='problems';
 1186: 	 } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'resources_for_students') {
 1187: 	     $selectionmade=8;
 1188: 	     $type='resources';
 1189: 	 }
 1190: 	 my @students=split /\|\|\|/, $helper->{'VARS'}->{'STUDENTS'};
 1191: 	 #   The normal sort order is by section then by students within the
 1192: 	 #   section. If the helper var student_sort is 1, then the user has elected
 1193: 	 #   to override this and output the students by name.
 1194: 	 #    Each element of the students array is of the form:
 1195: 	 #       username:domain:section:last, first:status
 1196: 	 #    
 1197: 	 #   
 1198: 	 if ($helper->{'VARS'}->{'student_sort'}    eq 1) {
 1199: 	     @students = sort compare_names  @students;
 1200: 	 }
 1201:          if ($helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq '0' ||
 1202: 	     $helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq 'all' ) {
 1203: 	     $helper->{'VARS'}->{'NUMBER_TO_PRINT'}=$#students+1;
 1204: 	 }
 1205: 	 my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
 1206: 
 1207: 	 #loop over students
 1208: 	 my $flag_latex_header_remove = 'NO'; 
 1209: 	 my %moreenv;
 1210:          $moreenv{'instructor_comments'}='hide';
 1211: 	 $moreenv{'textwidth'}=&get_textwidth($helper,$LaTeXwidth);
 1212: 	 $moreenv{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
 1213: 	 $moreenv{'problem_split'}    = $parmhash{'problem_stream_switch'};
 1214: 	 $moreenv{'suppress_tries'}   = $parmhash{'suppress_tries'};
 1215: 	 if ($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') {$moreenv{'problem_split'}='yes';}
 1216: 	 my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Print Status','Class Print Status',$#students+1,'inline','75');
 1217: 	 my $student_counter=-1;
 1218: 	 foreach my $person (@students) {
 1219: 
 1220:              my $duefile="/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.due";
 1221: 	     if (-e $duefile) {
 1222: 		 my $temp_file = Apache::File->new('>>'.$duefile);
 1223: 		 print $temp_file "1969\n";
 1224: 	     }
 1225: 	     $student_counter++;
 1226: 	     my $i=int($student_counter/$helper->{'VARS'}{'NUMBER_TO_PRINT'});
 1227: 	     my ($output,$fullname, $printed)=&print_resources($r,$helper,
 1228: 						     $person,$type,
 1229: 						     \%moreenv,\@master_seq,
 1230: 						     $flag_latex_header_remove,
 1231: 						     $LaTeXwidth);
 1232: 	     $resources_printed .= ":";
 1233: 	     $print_array[$i].=$output;
 1234: 	     $student_names[$i].=$person.':'.$fullname.'_END_';
 1235: 	     &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,&mt('last student').' '.$fullname);
 1236: 	     $flag_latex_header_remove = 'YES';
 1237: 	     if (&Apache::loncommon::connection_aborted($r)) { last; }
 1238: 	 }
 1239: 	 &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
 1240: 	 $result .= $print_array[0].'  \end{document}';
 1241:      } elsif (($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_for_anon')     ||
 1242: 	      ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'resources_for_anon')  ) { 
 1243: 	 my $cdom =$env{'course.'.$env{'request.course.id'}.'.domain'};
 1244: 	 my $cnum =$env{'course.'.$env{'request.course.id'}.'.num'};
 1245: 	 my $num_todo=$helper->{'VARS'}->{'NUMBER_TO_PRINT_TOTAL'};
 1246: 	 my $code_name=$helper->{'VARS'}->{'ANON_CODE_STORAGE_NAME'};
 1247: 	 my $old_name=$helper->{'VARS'}->{'REUSE_OLD_CODES'};
 1248: 	 
 1249: 	 my $code_option=$helper->{'VARS'}->{'CODE_OPTION'};
 1250: 	 open(FH,$Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
 1251: 	 my ($code_type,$code_length)=('letter',6);
 1252: 	 foreach my $line (<FH>) {
 1253: 	     my ($name,$type,$length) = (split(/:/,$line))[0,2,4];
 1254: 	     if ($name eq $code_option) {
 1255: 		 $code_length=$length;
 1256: 		 if ($type eq 'number') { $code_type = 'number'; }
 1257: 	     }
 1258: 	 }
 1259: 	 my %moreenv = ('textwidth' => &get_textwidth($helper,$LaTeXwidth));
 1260: 	 $moreenv{'problem_split'}    = $parmhash{'problem_stream_switch'};
 1261: 	 my $seed=time+($$<<16)+($$);
 1262: 	 my @allcodes;
 1263: 	 if ($old_name) {
 1264: 	     my %result=&Apache::lonnet::get('CODEs',
 1265: 					     [$old_name,"type\0$old_name"],
 1266: 					     $cdom,$cnum);
 1267: 	     $code_type=$result{"type\0$old_name"};
 1268: 	     @allcodes=split(',',$result{$old_name});
 1269: 	     $num_todo=scalar(@allcodes);
 1270: 	 } else {
 1271: 	     my %allcodes;
 1272: 	     srand($seed);
 1273: 	     for (my $i=0;$i<$num_todo;$i++) {
 1274: 		 $moreenv{'CODE'}=&get_CODE(\%allcodes,$i,$seed,$code_length,
 1275: 					    $code_type);
 1276: 	     }
 1277: 	     if ($code_name) {
 1278: 		 &Apache::lonnet::put('CODEs',
 1279: 				      {
 1280: 					$code_name =>join(',',keys(%allcodes)),
 1281: 					"type\0$code_name" => $code_type
 1282: 				      },
 1283: 				      $cdom,$cnum);
 1284: 	     }
 1285: 	     @allcodes=keys(%allcodes);
 1286: 	 }
 1287: 	 my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
 1288: 	 my ($type) = split(/_/,$helper->{'VARS'}->{'PRINT_TYPE'});
 1289: 	 my $number_per_page=$helper->{'VARS'}->{'NUMBER_TO_PRINT'};
 1290: 	 if ($number_per_page eq '0' || $number_per_page eq 'all') {
 1291: 	     $number_per_page=$num_todo;
 1292: 	 }
 1293: 	 my $flag_latex_header_remove = 'NO'; 
 1294: 	 my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Print Status','Class Print Status',$num_todo,'inline','75');
 1295: 	 my $count=0;
 1296: 	 foreach my $code (sort(@allcodes)) {
 1297: 	     my $file_num=int($count/$number_per_page);
 1298: 	     if ($code_type eq 'number') { 
 1299: 		 $moreenv{'CODE'}=$code;
 1300: 	     } else {
 1301: 		 $moreenv{'CODE'}=&num_to_letters($code);
 1302: 	     }
 1303: 	     my ($output,$fullname, $printed)=
 1304: 		 &print_resources($r,$helper,'anonymous',$type,\%moreenv,
 1305: 				  \@master_seq,$flag_latex_header_remove,
 1306: 				  $LaTeXwidth);
 1307: 	     $resources_printed .= ":";
 1308: 	     $print_array[$file_num].=$output;
 1309: 	     &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
 1310: 				       &mt('last assignment').' '.$fullname);
 1311: 	     $flag_latex_header_remove = 'YES';
 1312: 	     $count++;
 1313: 	     if (&Apache::loncommon::connection_aborted($r)) { last; }
 1314: 	 }
 1315: 	 &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
 1316: 	 $result .= $print_array[0].'  \end{document}';
 1317:      } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_from_directory') {      
 1318:     #prints selected problems from the subdirectory 
 1319: 	$selectionmade = 6;
 1320:         my @list_of_files=split /\|\|\|/, $helper->{'VARS'}->{'FILES'};
 1321: 	@list_of_files=sort @list_of_files;
 1322: 	my $flag_latex_header_remove = 'NO'; 
 1323: 	my $rndseed=time;
 1324: 	if ($helper->{'VARS'}->{'curseed'}) {
 1325: 	    $rndseed=$helper->{'VARS'}->{'curseed'};
 1326: 	}
 1327: 	for (my $i=0;$i<=$#list_of_files;$i++) {
 1328: 	    my $urlp = $list_of_files[$i];
 1329: 	    $urlp=~s|//|/|;
 1330: 	    if ($urlp=~/\//) {
 1331: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 1332: 		$form{'rndseed'}=$rndseed;
 1333: 		if ($urlp =~ m|/home/([^/]+)/public_html|) {
 1334: 		    $urlp =~ s|/home/([^/]*)/public_html|/~$1|;
 1335: 		} else {
 1336: 		    $urlp =~ s|^$Apache::lonnet::perlvar{'lonDocRoot'}||;
 1337: 		}
 1338: 		$resources_printed .= $urlp.':';
 1339: 		my $texversion=&Apache::lonnet::ssi($urlp,%form);
 1340: 		if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 1341: 		   ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 1342: 		    #  Don't permanently pervert %form:
 1343: 		    my %answerform = %form;
 1344: 		    $answerform{'grade_target'}='answer';
 1345: 		    $answerform{'answer_output_mode'}='tex';
 1346: 		    $answerform{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 1347: 		    $answerform{'rndseed'}=$rndseed;
 1348: 		    $resources_printed .= $urlp.':';
 1349: 		    my $answer=&Apache::lonnet::ssi($urlp,%answerform);
 1350: 		    if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 1351: 			$texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
 1352: 		    } else {
 1353: 			$texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 1354: 			if ($helper->{'VARS'}->{'construction'} ne '1') {
 1355: 			    $texversion.='\vskip 0 mm \noindent ';
 1356: 			    $texversion.=&path_to_problem ($urlp,$LaTeXwidth);
 1357: 			} else {
 1358: 			    $texversion.='\vskip 0 mm \noindent\textbf{Prints from construction space - there is no title.}\vskip 0 mm ';
 1359: 			    my $URLpath=$urlp;
 1360: 			    $URLpath=~s/~([^\/]+)/public_html\/$1\/$1/;
 1361: 			    $texversion.=&path_to_problem ($URLpath,$LaTeXwidth);
 1362: 			}
 1363: 			$texversion.='\vskip 1 mm '.$answer.'\end{document}';
 1364: 		    }
 1365: 		}
 1366:                 #this chunck is responsible for printing the path to problem
 1367: 		my $newurlp=$urlp;
 1368: 		if ($newurlp=~/~/) {$newurlp=~s|\/~([^\/]+)\/|\/home\/$1\/public_html\/|;}
 1369: 		$newurlp=&path_to_problem($newurlp,$LaTeXwidth);
 1370: 		$texversion =~ s/(\\begin{minipage}{\\textwidth})/$1 $newurlp/;
 1371: 		if ($flag_latex_header_remove ne 'NO') {
 1372: 		    $texversion = &latex_header_footer_remove($texversion);
 1373: 		} else {
 1374: 		    $texversion =~ s/\\end{document}//;
 1375: 		}
 1376: 		if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 1377: 		    $texversion=&IndexCreation($texversion,$urlp);
 1378: 		}
 1379: 		if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
 1380: 		    $texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$urlp| \\strut\\\\\\strut /;
 1381: 		    
 1382: 		}
 1383: 		$result .= $texversion;
 1384: 	    }
 1385: 	    $flag_latex_header_remove = 'YES';  
 1386: 	}
 1387: 	if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\typeout)/ RANDOM SEED IS $rndseed $1/;}
 1388: 	$result .= '\end{document}';      	
 1389:     }
 1390: #-------------------------------------------------------- corrections for the different page formats
 1391:     $result = &page_format_transformation($papersize,$laystyle,$numberofcolumns,$helper->{'VARS'}->{'PRINT_TYPE'},$result,$helper->{VARS}->{'assignment'},$helper->{'VARS'}->{'TABLE_CONTENTS'},$helper->{'VARS'}->{'TABLE_INDEX'},$selectionmade);
 1392:     $result = &latex_corrections($number_of_columns,$result,$selectionmade);
 1393:     for (my $i=1;$i<=$#print_array;$i++) {$print_array[$i] = &latex_corrections($number_of_columns,$print_array[$i],$selectionmade);}
 1394:     #changes page's parameters for the one column output 
 1395:     if ($numberofcolumns == 1) {
 1396: 	$result =~ s/\\textwidth\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\textwidth= $helper->{'VARS'}->{'pagesize.width'} $helper->{'VARS'}->{'pagesize.widthunit'} /;
 1397: 	$result =~ s/\\textheight\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\textheight $helper->{'VARS'}->{'pagesize.height'} $helper->{'VARS'}->{'pagesize.heightunit'} /;
 1398: 	$result =~ s/\\evensidemargin\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\evensidemargin= $helper->{'VARS'}->{'pagesize.lmargin'} $helper->{'VARS'}->{'pagesize.lmarginunit'} /;
 1399: 	$result =~ s/\\oddsidemargin\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\oddsidemargin= $helper->{'VARS'}->{'pagesize.lmargin'} $helper->{'VARS'}->{'pagesize.lmarginunit'} /;
 1400:     }
 1401: 
 1402: #-- writing .tex file in prtspool 
 1403:     my $temp_file;
 1404:     my $identifier = &Apache::loncommon::get_cgi_id();
 1405:     my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout_$identifier.tex";
 1406:     if (!($#print_array>0)) { 
 1407: 	unless ($temp_file = Apache::File->new('>'.$filename)) {
 1408: 	    $r->log_error("Couldn't open $filename for output $!");
 1409: 	    return SERVER_ERROR; 
 1410: 	}
 1411: 	print $temp_file $result;
 1412: 	my $begin=index($result,'\begin{document}',0);
 1413: 	my $inc=substr($result,0,$begin+16);
 1414:     } else {
 1415: 	my $begin=index($result,'\begin{document}',0);
 1416: 	my $inc=substr($result,0,$begin+16);
 1417:         for (my $i=0;$i<=$#print_array;$i++) {
 1418: 	    if ($i==0) {
 1419: 		$print_array[$i]=$result;
 1420: 	    } else {
 1421: 		my $anobegin=index($print_array[$i],'\setcounter{page}',0);
 1422: 		substr($print_array[$i],0,$anobegin)='';
 1423: 		$print_array[$i]=$inc.$print_array[$i].'\end{document}';
 1424: 	    }
 1425: 	    my $temp_file;
 1426: 	    my $newfilename=$filename;
 1427: 	    my $num=$i+1;
 1428: 	    $newfilename =~s/\.tex$//; 
 1429: 	    $newfilename=sprintf("%s_%03d.tex",$newfilename, $num);
 1430: 	    unless ($temp_file = Apache::File->new('>'.$newfilename)) {
 1431: 		$r->log_error("Couldn't open $newfilename for output $!");
 1432: 		return SERVER_ERROR; 
 1433: 	    }
 1434: 	    print $temp_file $print_array[$i];
 1435: 	}
 1436:     }
 1437:     my $student_names='';
 1438:     if ($#print_array>0) {
 1439: 	for (my $i=0;$i<=$#print_array;$i++) {
 1440: 	    $student_names.=$student_names[$i].'_ENDPERSON_';
 1441: 	}
 1442:     } else {
 1443: 	if ($#student_names>-1) {
 1444: 	    $student_names=$student_names[0].'_ENDPERSON_';
 1445: 	} else {
 1446: 	    my $fullname = &get_name($env{'user.name'},$env{'user.domain'});
 1447: 	    $student_names=join(':',$env{'user.name'},$env{'user.domain'},
 1448: 				$env{'request.course.sec'},$fullname).
 1449: 				    '_ENDPERSON_'.'_END_';
 1450: 	}
 1451:     }
 1452: 
 1453:     my $URLback=''; #link to original document
 1454:     if ($helper->{'VARS'}->{'construction'} ne '1') {
 1455: 	#prints published resource
 1456: 	$URLback=&Apache::lonnet::escape('/adm/flip?postdata=return:');
 1457:     } else {
 1458: 	#prints resource from the construction space
 1459: 	$URLback='/'.$helper->{'VARS'}->{'filename'};
 1460: 	if ($URLback=~/([^?]+)/) {
 1461: 	    $URLback=$1;
 1462: 	    $URLback=~s|^/~|/priv/|;
 1463: 	}
 1464:     }
 1465:     # logic for now is too complex to trace if this has been defined
 1466:     #  yet.
 1467:     my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 1468:     my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 1469:     &Apache::lonnet::appenv('cgi.'.$identifier.'.file'   => $filename,
 1470:                             'cgi.'.$identifier.'.layout'  => $laystyle,
 1471:                             'cgi.'.$identifier.'.numcol'  => $numberofcolumns,
 1472: 			    'cgi.'.$identifier.'.paper'  => $papersize,
 1473:                             'cgi.'.$identifier.'.selection' => $selectionmade,
 1474: 			    'cgi.'.$identifier.'.tableofcontents' => $helper->{'VARS'}->{'TABLE_CONTENTS'},
 1475: 			    'cgi.'.$identifier.'.tableofindex' => $helper->{'VARS'}->{'TABLE_INDEX'},
 1476: 			    'cgi.'.$identifier.'.role' => $env{'request.role.adv'},
 1477:                             'cgi.'.$identifier.'.numberoffiles' => $#print_array,
 1478:                             'cgi.'.$identifier.'.studentnames' => $student_names,
 1479:                             'cgi.'.$identifier.'.backref' => $URLback,);
 1480:     &Apache::lonnet::appenv("cgi.$identifier.user"    => $env{'user.name'},
 1481: 			    "cgi.$identifier.domain"  => $env{'user.domain'},
 1482: 			    "cgi.$identifier.courseid" => $cnum, 
 1483: 			    "cgi.$identifier.coursedom" => $cdom, 
 1484: 			    "cgi.$identifier.resources" => $resources_printed);
 1485: 
 1486: $r->print(<<FINALEND);
 1487: <br />
 1488: <meta http-equiv="Refresh" content="0; url=/cgi-bin/printout.pl?$identifier" />
 1489: <a href="/cgi-bin/printout.pl?$identifier">Continue</a>
 1490: </body>
 1491: </html>
 1492: FINALEND
 1493: }
 1494: 
 1495: sub num_to_letters {
 1496:     my ($num) = @_;
 1497:     my @nums= split('',$num);
 1498:     my @num_to_let=('A'..'Z');
 1499:     my $word;
 1500:     foreach my $digit (@nums) { $word.=$num_to_let[$digit]; }
 1501:     return $word;
 1502: }
 1503: 
 1504: sub get_CODE {
 1505:     my ($all_codes,$num,$seed,$size,$type)=@_;
 1506:     my $max='1'.'0'x$size;
 1507:     my $newcode;
 1508:     while(1) {
 1509: 	$newcode=sprintf("%06d",int(rand($max)));
 1510: 	if (!exists($$all_codes{$newcode})) {
 1511: 	    $$all_codes{$newcode}=1;
 1512: 	    if ($type eq 'number' ) {
 1513: 		return $newcode;
 1514: 	    } else {
 1515: 		return &num_to_letters($newcode);
 1516: 	    }
 1517: 	}
 1518:     }
 1519: }
 1520: 
 1521: sub print_resources {
 1522:     my ($r,$helper,$person,$type,$moreenv,$master_seq,$remove_latex_header,
 1523: 	$LaTeXwidth)=@_;
 1524:     my $current_output = ''; 
 1525:     my $printed = '';
 1526:     my ($username,$userdomain,$usersection) = split /:/,$person;
 1527:     my $fullname = &get_name($username,$userdomain);
 1528:     my $namepostfix;
 1529:     if ($person =~ 'anon') {
 1530: 	$namepostfix="\\\\Name: ";
 1531: 	$fullname = "CODE - ".$moreenv->{'CODE'};
 1532:     }
 1533:     my $i           = 0;
 1534:     #goes through all resources, checks if they are available for 
 1535:     #current student, and produces output   
 1536:     &Apache::lonnet::delenv('form.counter');
 1537:     &Apache::lonxml::init_counter();
 1538: 
 1539:     my %page_breaks  = &get_page_breaks($helper);
 1540: 
 1541:     foreach my $curresline (@{$master_seq})  {
 1542: 	if (defined $page_breaks{$curresline}) {
 1543: 	    if($i != 0) {
 1544: 		$current_output.= "\\newpage\n";
 1545: 	    }
 1546: 	}
 1547: 	$i++;
 1548: 	if ( !($type eq 'problems' && 
 1549: 	       ($curresline!~ m/\.(problem|exam|quiz|assess|survey|form|library)$/)) ) {
 1550: 	    my ($map,$id,$res_url) = &Apache::lonnet::decode_symb($curresline);
 1551: 	    if (&Apache::lonnet::allowed('bre',$res_url)) {
 1552: 		if ($res_url=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
 1553: 		    $printed .= $curresline.':';
 1554: 		    my $rendered = &Apache::loncommon::get_student_view($curresline,$username,$userdomain,$env{'request.course.id'},'tex',$moreenv);
 1555: 		    my $lonidsdir=$r->dir_config('lonIDsDir');
 1556: 		    my $envfile=$env{'user.environment'};
 1557: 		    $envfile=~/\/([^\/]+)\.id$/;
 1558: 		    $envfile=$1;
 1559: 		    &Apache::lonnet::transfer_profile_to_env($lonidsdir,$envfile);
 1560: 		    my $current_counter=$env{'form.counter'};
 1561: 		    if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 1562: 		       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 1563: 			#   Use a copy of the hash so we don't pervert it on future loop passes.
 1564: 			my %answerenv = %{$moreenv};
 1565: 			$answerenv{'answer_output_mode'}='tex';
 1566: 			$answerenv{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 1567: 			my $ansrendered = &Apache::loncommon::get_student_answers($curresline,$username,$userdomain,$env{'request.course.id'},%answerenv);
 1568: 			&Apache::lonnet::appenv(('form.counter' => $current_counter));
 1569: 			if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 1570: 			    $rendered=~s/(\\keephidden{ENDOFPROBLEM})/$ansrendered$1/;
 1571: 			} else {
 1572: 			    $rendered=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 1573: 			    $rendered.='\vskip 0 mm \noindent\textbf{'.&Apache::lonnet::gettitle($curresline).'}\vskip 0 mm ';
 1574: 			    $rendered.=&path_to_problem ($curresline,$LaTeXwidth);
 1575: 			    $rendered.='\vskip 1 mm '.$ansrendered;
 1576: 			}
 1577: 		    }
 1578: 		    if ($remove_latex_header eq 'YES') {
 1579: 			$rendered = &latex_header_footer_remove($rendered);
 1580: 		    } else {
 1581: 			$rendered =~ s/\\end{document}//;
 1582: 		    }
 1583: 		    $current_output .= $rendered;		    
 1584: 		} elsif ($res_url=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) {
 1585: 		    $printed .= $curresline.':';
 1586: 		    my $rendered = &Apache::loncommon::get_student_view($curresline,$username,$userdomain,$env{'request.course.id'},'tex',$moreenv);
 1587: 		    my $lonidsdir=$r->dir_config('lonIDsDir');
 1588: 		    my $envfile=$env{'user.environment'};
 1589: 		    $envfile=~/\/([^\/]+)\.id$/;
 1590: 		    $envfile=$1;
 1591: 		    &Apache::lonnet::transfer_profile_to_env($lonidsdir,$envfile);
 1592: 		    my $current_counter=$env{'form.counter'};
 1593: 		    if ($remove_latex_header eq 'YES') {
 1594: 			$rendered = &latex_header_footer_remove($rendered);
 1595: 		    } else {
 1596: 			$rendered =~ s/\\end{document}//;
 1597: 		    }
 1598: 		    $current_output .= $rendered.'\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\strut \vskip 0 mm \strut ';
 1599: 		} else {
 1600: 		    my $rendered = &unsupported($res_url,$helper->{'VARS'}->{'LATEX_TYPE'});
 1601: 		    if ($remove_latex_header ne 'NO') {
 1602: 			$rendered = &latex_header_footer_remove($rendered);
 1603: 		    } else {
 1604: 			$rendered =~ s/\\end{document}//;
 1605: 		    }
 1606: 		    $current_output .= $rendered;
 1607: 		}
 1608: 	    }
 1609: 	    $remove_latex_header = 'YES';
 1610: 	}
 1611: 	if (&Apache::loncommon::connection_aborted($r)) { last; }
 1612:     }
 1613:     my $courseidinfo = &get_course();
 1614:     if (defined($courseidinfo)) { $courseidinfo=' - '.$courseidinfo }
 1615:     if ($usersection ne '') {$courseidinfo.=' - Sec. '.$usersection}
 1616:     my $currentassignment=&Apache::lonxml::latex_special_symbols($helper->{VARS}->{'assignment'},'header');
 1617:     if ($current_output=~/\\documentclass/) {
 1618: 	$current_output =~ s/\\begin{document}/\\setlength{\\topmargin}{1cm} \\begin{document}\\noindent\\parbox{\\minipagewidth}{\\noindent\\lhead{\\textit{\\textbf{$fullname}}$courseidinfo \\hfill \\thepage \\\\ \\textit{$currentassignment}$namepostfix}}\\vskip 5 mm /;
 1619:     } else {
 1620: 	my $blankpages = '';
 1621: 	for (my $j=0;$j<$helper->{'VARS'}->{'EMPTY_PAGES'};$j++) {$blankpages.='\clearpage\strut\clearpage';}
 1622: 	$current_output = '\strut\vspace*{-6 mm}\\newline\\noindent\\makebox[\\textwidth/$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;
 1623:     }
 1624:     return ($current_output,$fullname, $printed);
 1625: 
 1626: }
 1627: 
 1628: sub handler {
 1629: 
 1630:     my $r = shift;
 1631:     my $helper;
 1632: 
 1633: #    my $loaderror=&Apache::lonnet::overloaderror($r);
 1634: #    if ($loaderror) { return $loaderror; }
 1635: #    $loaderror=
 1636: #       &Apache::lonnet::overloaderror($r,
 1637: #         $env{'course.'.$env{'request.course.id'}.'.home'});
 1638: #    if ($loaderror) { return $loaderror; }
 1639: 
 1640:     my $result = printHelper($r);
 1641:     if (!ref($result)) {
 1642: 	return $result;
 1643:     }
 1644:     $helper = $result;
 1645:    
 1646: #	my $key; 
 1647: #	foreach $key (keys %{$helper->{'VARS'}}) {
 1648: #	    $r->print(' '.$key.'->'.$helper->{'VARS'}->{$key}.'<-<br />');
 1649: #	}
 1650: #	foreach $key (keys %env) {
 1651: #	    $r->print(' '.$key.'->'.$env{$key}.'<-<br />');
 1652: #	}
 1653: #	return OK;
 1654: 
 1655:     my %parmhash=&Apache::lonnet::coursedescription($env{'request.course.id'});
 1656:  
 1657: #	my $key; 
 1658: #	foreach $key (keys %parmhash) {
 1659: #	    $r->print(' '.$key.'->'.$parmhash{$key}.'<-<br />');
 1660: #	}
 1661: #
 1662: 
 1663: 
 1664:     #  If a figure conversion queue file exists for this user.domain
 1665:     # we delete it since it can only be bad (if it were good, printout.pl
 1666:     # would have deleted it the last time around.
 1667: 
 1668:     my $conversion_queuefile = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout.dat";
 1669:     if(-e $conversion_queuefile) {
 1670: 	unlink $conversion_queuefile;
 1671:     }
 1672:     &output_data($r,$helper,\%parmhash);
 1673:     return OK;
 1674: } 
 1675: 
 1676: use Apache::lonhelper;
 1677: 
 1678: sub addMessage {
 1679:     my $text = shift;
 1680:     my $paramHash = Apache::lonhelper::getParamHash();
 1681:     $paramHash->{MESSAGE_TEXT} = $text;
 1682:     Apache::lonhelper::message->new();
 1683: }
 1684: 
 1685: use Data::Dumper;
 1686: 
 1687: sub printHelper {
 1688:     my $r = shift;
 1689: 
 1690:     if ($r->header_only) {
 1691:         if ($env{'browser.mathml'}) {
 1692:             &Apache::loncommon::content_type($r,'text/xml');
 1693:         } else {
 1694:             &Apache::loncommon::content_type($r,'text/html');
 1695:         }
 1696:         $r->send_http_header;
 1697:         return OK;
 1698:     }
 1699: 
 1700:     # Send header, nocache
 1701:     if ($env{'browser.mathml'}) {
 1702:         &Apache::loncommon::content_type($r,'text/xml');
 1703:     } else {
 1704:         &Apache::loncommon::content_type($r,'text/html');
 1705:     }
 1706:     &Apache::loncommon::no_cache($r);
 1707:     $r->send_http_header;
 1708:     $r->rflush();
 1709: 
 1710:     # Unfortunately, this helper is so complicated we have to
 1711:     # write it by hand
 1712: 
 1713:     Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING});
 1714:     
 1715:     my $helper = Apache::lonhelper::helper->new("Printing Helper");
 1716:     $helper->declareVar('symb');
 1717:     $helper->declareVar('postdata');    
 1718:     $helper->declareVar('curseed'); 
 1719:     $helper->declareVar('probstatus');   
 1720:     $helper->declareVar('filename');
 1721:     $helper->declareVar('construction');
 1722:     $helper->declareVar('assignment');
 1723:     $helper->declareVar('style_file');
 1724:     $helper->declareVar('student_sort');
 1725:     $helper->declareVar('FINISHPAGE');
 1726:     $helper->declareVar('PRINT_TYPE');
 1727:     $helper->declareVar("showallfoils");
 1728: 
 1729:     #  The page breaks can get loaded initially from the course environment:
 1730: 
 1731:     if((!defined($env{"form.CURRENT_STATE"}))  ||
 1732:        ($env{'form.CURRENT_STATE'} == "START")) {
 1733: 	$helper->{VARS}->{FINISHPAGE} = ""; # In case they did a back e.g.
 1734:     }
 1735: 
 1736: 
 1737:     
 1738:     &Apache::loncommon::restore_course_settings('print',
 1739: 						{'pagebreaks'  => 'scalar',
 1740: 					         'lastprinttype' => 'scalar'});
 1741: 
 1742:     
 1743:     if("$helper->{VARS}->{PRINT_TYPE}" eq "$env{'form.lastprinttype'}") {
 1744: 	$helper->{VARS}->{FINISHPAGE} = $env{'form.pagebreaks'};
 1745:     }
 1746:     
 1747:     
 1748:     # This will persistently load in the data we want from the
 1749:     # very first screen.
 1750:     # Detect whether we're coming from construction space
 1751:     if ($env{'form.postdata'}=~/^(?:http:\/\/[^\/]+\/|\/|)\~([^\/]+)\/(.*)$/) {
 1752:         $helper->{VARS}->{'filename'} = "~$1/$2";
 1753:         $helper->{VARS}->{'construction'} = 1;
 1754:     } else {
 1755:         if ($env{'form.postdata'}) {
 1756:             $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($env{'form.postdata'});
 1757:         }
 1758:         if ($env{'form.symb'}) {
 1759:             $helper->{VARS}->{'symb'} = $env{'form.symb'};
 1760:         }
 1761:         if ($env{'form.url'}) {
 1762:             $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($helper->{VARS}->{'postdata'});
 1763:         }
 1764:     }
 1765: 
 1766:     if ($env{'form.symb'}) {
 1767:         $helper->{VARS}->{'symb'} = $env{'form.symb'};
 1768:     }
 1769:     if ($env{'form.url'}) {
 1770:         $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($helper->{VARS}->{'postdata'});
 1771: 
 1772:     }
 1773:     $helper->{VARS}->{'symb'}=
 1774: 	&Apache::lonenc::check_encrypt($helper->{VARS}->{'symb'});
 1775:     my ($resourceTitle,$sequenceTitle,$mapTitle) = &details_for_menu($helper);
 1776:     if ($sequenceTitle ne '') {$helper->{VARS}->{'assignment'}=$sequenceTitle;}
 1777: 
 1778:     
 1779:     # Extract map
 1780:     my $symb = $helper->{VARS}->{'symb'};
 1781:     my ($map, $id, $url);
 1782:     my $subdir;
 1783: 
 1784:     # Get the resource name from construction space
 1785:     if ($helper->{VARS}->{'construction'}) {
 1786:         $resourceTitle = substr($helper->{VARS}->{'filename'}, 
 1787:                                 rindex($helper->{VARS}->{'filename'}, '/')+1);
 1788:         $subdir = substr($helper->{VARS}->{'filename'},
 1789:                          0, rindex($helper->{VARS}->{'filename'}, '/') + 1);
 1790:     } else {
 1791:         ($map, $id, $url) = &Apache::lonnet::decode_symb($symb);
 1792:         $helper->{VARS}->{'postdata'} = 
 1793: 	    &Apache::lonenc::check_encrypt(&Apache::lonnet::clutter($url));
 1794: 
 1795:         if (!$resourceTitle) { # if the resource doesn't have a title, use the filename
 1796:             my $postdata = $helper->{VARS}->{'postdata'};
 1797:             $resourceTitle = substr($postdata, rindex($postdata, '/') + 1);
 1798:         }
 1799:         $subdir = &Apache::lonnet::filelocation("", $url);
 1800:     }
 1801:     if (!$helper->{VARS}->{'curseed'} && $env{'form.curseed'}) {
 1802: 	$helper->{VARS}->{'curseed'}=$env{'form.curseed'};
 1803:     }
 1804:     if (!$helper->{VARS}->{'probstatus'} && $env{'form.problemtype'}) {
 1805: 	$helper->{VARS}->{'probstatus'}=$env{'form.problemtype'};
 1806:     }
 1807: 
 1808:     my $userCanSeeHidden = Apache::lonnavmaps::advancedUser();
 1809:     my $userPriviledged = ($env{'request.role'}=~m/^cc\./ or
 1810: 			   $env{'request.role'}=~m/^in\./ or
 1811: 			   $env{'request.role'}=~m/^ta\./);
 1812: 
 1813:     Apache::lonhelper::registerHelperTags();
 1814: 
 1815:     # "Delete everything after the last slash."
 1816:     $subdir =~ s|/[^/]+$||;
 1817:     if (not $helper->{VARS}->{'construction'}) {
 1818: 	$subdir=$Apache::lonnet::perlvar{'lonDocRoot'}.'/res/'.$subdir;
 1819:     }
 1820:     # "Remove all duplicate slashes."
 1821:     $subdir =~ s|/+|/|g;
 1822: 
 1823:     # What can be printed is a very dynamic decision based on
 1824:     # lots of factors. So we need to dynamically build this list.
 1825:     # To prevent security leaks, states are only added to the wizard
 1826:     # if they can be reached, which ensures manipulating the form input
 1827:     # won't allow anyone to reach states they shouldn't have permission
 1828:     # to reach.
 1829: 
 1830:     # printChoices is tracking the kind of printing the user can
 1831:     # do, and will be used in a choices construction later.
 1832:     # In the meantime we will be adding states and elements to
 1833:     # the helper by hand.
 1834:     my $printChoices = [];
 1835:     my $paramHash;
 1836: 
 1837:     if ($resourceTitle) {
 1838:         push @{$printChoices}, ["<b><i>$resourceTitle</i></b> (".&mt('what you just saw on the screen').")", 'current_document', 'PAGESIZE'];
 1839:     }
 1840: 
 1841:     # Useful filter strings
 1842:     my $isProblem = '($res->is_problem()||$res->contains_problem) ';
 1843:     $isProblem .= ' && !$res->randomout()' if !$userCanSeeHidden;
 1844:     my $isProblemOrMap = '$res->is_problem() || $res->contains_problem() || $res->is_sequence()';
 1845:     my $isNotMap = '!$res->is_sequence()';
 1846:     $isNotMap .= ' && !$res->randomout()' if !$userCanSeeHidden;
 1847:     my $isMap = '$res->is_map()';
 1848:     my $symbFilter = '$res->shown_symb()';
 1849:     my $urlValue = '$res->link()';
 1850: 
 1851:     $helper->declareVar('SEQUENCE');
 1852: 
 1853:     # Useful for debugging: Dump the help vars
 1854: #    $r->print(Dumper($helper->{VARS}));
 1855: #    $r->print($map);
 1856: 
 1857:     # If we're in a sequence...
 1858:     if (($helper->{'VARS'}->{'construction'} ne '1') &&
 1859: 
 1860: 	$helper->{VARS}->{'postdata'} &&
 1861: 	$helper->{VARS}->{'assignment'}) {
 1862:         # Allow problems from sequence
 1863:         push @{$printChoices}, ["<b>".&mt('Problems')."</b> ".&mt('in')." <b><i>$sequenceTitle</i></b>", 'map_problems', 'CHOOSE_PROBLEMS'];
 1864:         # Allow all resources from sequence
 1865:         push @{$printChoices}, ["<b>".&mt('Resources')."</b> ".&mt('in')." <b><i>$sequenceTitle</i></b>", 'map_problems_pages', 'CHOOSE_PROBLEMS_HTML'];
 1866: 
 1867:         my $helperFragment = <<HELPERFRAGMENT;
 1868:   <state name="CHOOSE_PROBLEMS" title="Select Problem(s) to print">
 1869:     <message>(mark them then click "next" button) <br /></message>
 1870:     <resource variable="RESOURCES" multichoice="1" toponly='1' addstatus="1"
 1871:               closeallpages="1">
 1872:       <nextstate>PAGESIZE</nextstate>
 1873:       <filterfunc>return $isProblem;</filterfunc>
 1874:       <mapurl>$map</mapurl>
 1875:       <valuefunc>return $symbFilter;</valuefunc>
 1876:       <option text='Newpage' variable='FINISHPAGE' />
 1877:       </resource>
 1878:     </state>
 1879: 
 1880:   <state name="CHOOSE_PROBLEMS_HTML" title="Select Resource(s) to print">
 1881:     <message>(mark them then click "next" button) <br /></message>
 1882:     <resource variable="RESOURCES" multichoice="1" toponly='1' addstatus="1"
 1883:               closeallpages="1">
 1884:       <nextstate>PAGESIZE</nextstate>
 1885:       <filterfunc>return $isNotMap;</filterfunc>
 1886:       <mapurl>$map</mapurl>
 1887:       <valuefunc>return $symbFilter;</valuefunc>
 1888:       <option text='Newpage' variable='FINISHPAGE' />
 1889:       </resource>
 1890:     </state>
 1891: HELPERFRAGMENT
 1892: 
 1893: 	&Apache::lonxml::xmlparse($r, 'helper', $helperFragment);
 1894:     }
 1895: 
 1896:     # If the user is privileged, allow them to print all 
 1897:     # problems and resources  in the entier course, optionally for selected students
 1898:     if ($userPriviledged && 
 1899:         ($helper->{VARS}->{'postdata'}=~/\/res\// || $helper->{VARS}->{'postdata'}=~/\/(syllabus|smppg|aboutme|bulletinboard)$/)) { 
 1900: 
 1901:         push @{$printChoices}, ['<b>Problems</b> from <b>entire course</b>', 'all_problems', 'ALL_PROBLEMS'];
 1902: 	push @{$printChoices}, ['<b>Resources</b> from <b>entire course</b>', 'all_resources', 'ALL_RESOURCES'];
 1903:          &Apache::lonxml::xmlparse($r, 'helper', <<ALL_PROBLEMS);
 1904:   <state name="ALL_PROBLEMS" title="Select Problem(s) to print">
 1905:     <message>(mark them then click "next" button) <br /></message>
 1906:     <resource variable="RESOURCES" toponly='0' multichoice="1"
 1907: 	suppressEmptySequences='0' addstatus="1" closeallpages="1">
 1908:       <nextstate>PAGESIZE</nextstate>
 1909:       <filterfunc>return $isProblemOrMap;</filterfunc>
 1910:       <choicefunc>return $isNotMap;</choicefunc>
 1911:       <valuefunc>return $symbFilter;</valuefunc>
 1912:       <option text='Newpage' variable='FINISHPAGE' />
 1913:     </resource>
 1914:   </state>
 1915:   <state name="ALL_RESOURCES" title="Select Resource(s) to print">
 1916:     <message>(Mark them then click "next" button) <br /> </message>
 1917:     <resource variable="RESOURCES" toponly='0' multichoice='1'
 1918:               suppressEmptySequences='0' addstatus='1' closeallpages='1'>
 1919:       <nextstate>PAGESIZE</nextstate>
 1920:       <filterfunc>return $isNotMap; </filterfunc>
 1921:       <valuefunc>return $symbFilter;</valuefunc>
 1922:       <option text='NewPage' variable='FINISHPAGE' />
 1923:     </resource>
 1924:   </state>
 1925: ALL_PROBLEMS
 1926: 
 1927: 	if ($helper->{VARS}->{'assignment'}) {
 1928: 	    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'];
 1929: 	    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'];
 1930: 	}
 1931: 	my $resource_selector=<<RESOURCE_SELECTOR;
 1932:    <message><br /><big><i><b>Select resources for the assignment</b></i></big><br /></message>
 1933:     <resource variable="RESOURCES" multichoice="1" addstatus="1" 
 1934:               closeallpages="1">
 1935:       <filterfunc>return $isProblem;</filterfunc>
 1936:       <mapurl>$map</mapurl>
 1937:       <valuefunc>return $symbFilter;</valuefunc>
 1938:       <option text='New Page' variable='FINISHPAGE' />
 1939:       </resource>
 1940:     <message><br /><big><i><b>How should the results be printed?</b></i></big><br /></message>
 1941:     <choices variable="EMPTY_PAGES">
 1942:       <choice computer='0'>Start each student\'s assignment on a new page/column (add a pagefeed after each assignment)</choice>
 1943:       <choice computer='1'>Add one empty page/column after each student\'s assignment</choice>
 1944:       <choice computer='2'>Add two empty pages/column after each student\'s assignment</choice>
 1945:       <choice computer='3'>Add three empty pages/column after each student\'s assignment</choice>
 1946:     </choices>
 1947:     <message><hr width='33%' /><b>Number of assignments printed at the same time: </b></message>
 1948:     <string variable="NUMBER_TO_PRINT" maxlength="5" size="5"><defaultvalue>"all"</defaultvalue></string>
 1949: RESOURCE_SELECTOR
 1950: 
 1951:         &Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_STUDENTS);
 1952:   <state name="CHOOSE_STUDENTS" title="Select Students and Resources">
 1953:       <student multichoice='1' variable="STUDENTS" nextstate="PAGESIZE" coursepersonnel="1"/>
 1954:       <message><b>Select sort order</b> </message>
 1955:     <choices variable='student_sort'>
 1956:       <choice computer='0'>Sort by section then student</choice>
 1957:       <choice computer='1'>Sort by students across sections.</choice>
 1958:     </choices>
 1959:     $resource_selector
 1960:   </state>
 1961: CHOOSE_STUDENTS
 1962: 
 1963: 	my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 1964: 	my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 1965:         my @names=&Apache::lonnet::getkeys('CODEs',$cdom,$cnum);
 1966: 	my $namechoice='<choice></choice>';
 1967: 	foreach my $name (sort {uc($a) cmp uc($b)} @names) {
 1968: 	    if ($name =~ /^error: 2 /) { next; }
 1969: 	    if ($name =~ /^type\0/) { next; }
 1970: 	    $namechoice.='<choice computer="'.$name.'">'.$name.'</choice>';
 1971: 	}
 1972: 	open(FH,$Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
 1973: 	my $codechoice='';
 1974: 	foreach my $line (<FH>) {
 1975: 	    my ($name,$description,$code_type,$code_length)=
 1976: 		(split(/:/,$line))[0,1,2,4];
 1977: 	    if ($code_length > 0 && 
 1978: 		$code_type =~/^(letter|number|-1)/) {
 1979: 		$codechoice.='<choice computer="'.$name.'">'.$description.'</choice>';
 1980: 	    }
 1981: 	}
 1982: 	if ($codechoice eq '') {
 1983: 	    $codechoice='<choice computer="default">Default</choice>';
 1984: 	}
 1985:         &Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_ANON1);
 1986:   <state name="CHOOSE_ANON1" title="Select Students and Resources">
 1987:     <nextstate>PAGESIZE</nextstate>
 1988:     <message><hr width='33%' /></message>
 1989:     <message><table><tr><td><b>Number of anonymous assignments to print?</b></td><td></message>
 1990:     <string variable="NUMBER_TO_PRINT_TOTAL" maxlength="5" size="5">
 1991:        <validator>
 1992: 	if (((\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}+0) < 1) &&
 1993: 	    !\$helper->{'VARS'}{'REUSE_OLD_CODES'}) {
 1994: 	    return "You need to specify the number of assignments to print";
 1995: 	}
 1996: 	return undef;
 1997:        </validator>
 1998:     </string>
 1999:     <message></td></tr><tr><td></message>
 2000:     <message><b>Names to store the CODEs under for later:</b></message>
 2001:     <message></td><td></message>
 2002:     <string variable="ANON_CODE_STORAGE_NAME" maxlength="50" size="20" />
 2003:     <message></td></tr><tr><td></message>
 2004:     <message><b>Bubble sheet type:</b></message>
 2005:     <message></td><td></message>
 2006:     <dropdown variable="CODE_OPTION" multichoice="0" allowempty="0">
 2007:     $codechoice
 2008:     </dropdown>
 2009:     <message></td></tr></table></message>
 2010:     <message><hr width='33%' /></message>
 2011:     <message><b>Reprint a set of saved CODEs:</b></message>
 2012:     <dropdown variable="REUSE_OLD_CODES">
 2013:         $namechoice
 2014:     </dropdown>
 2015:     <message><hr width='33%' /></message>
 2016:     $resource_selector
 2017:   </state>
 2018: CHOOSE_ANON1
 2019: 
 2020: 
 2021: 	if ($helper->{VARS}->{'assignment'}) {
 2022: 	    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'];
 2023: 	    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'];
 2024: 	}
 2025: 	    
 2026: 
 2027: 	$resource_selector=<<RESOURCE_SELECTOR;
 2028:     <message><br /><big><i><b>Select resources for the assignment</b></i></big><br /></message>
 2029:     <resource variable="RESOURCES" multichoice="1" addstatus="1" 
 2030:               closeallpages="1">
 2031:       <filterfunc>return $isNotMap;</filterfunc>
 2032:       <mapurl>$map</mapurl>
 2033:       <valuefunc>return $symbFilter;</valuefunc>
 2034:       <option text='Newpage' variable='FINISHPAGE' />
 2035:       </resource>
 2036:     <message><br /><big><i><b>How should the results be printed?</b></i></big><br /></message>
 2037:     <choices variable="EMPTY_PAGES">
 2038:       <choice computer='0'>Start each student\'s assignment on a new page/column (add a pagefeed after each assignment)</choice>
 2039:       <choice computer='1'>Add one empty page/column after each student\'s assignment</choice>
 2040:       <choice computer='2'>Add two empty pages/column after each student\'s assignment</choice>
 2041:       <choice computer='3'>Add three empty pages/column after each student\'s assignment</choice>
 2042:     </choices>
 2043:     <message><hr width='33%' /><b>Number of assignments printed at the same time: </b></message>
 2044:     <string variable="NUMBER_TO_PRINT" maxlength="5" size="5"><defaultvalue>"all"</defaultvalue></string>
 2045: RESOURCE_SELECTOR
 2046: 
 2047: 	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_STUDENTS1);
 2048:   <state name="CHOOSE_STUDENTS1" title="Select Students and Resources">
 2049:     <student multichoice='1' variable="STUDENTS" nextstate="PAGESIZE" coursepersonnel="1" />
 2050:     <choices variable='student_sort'>
 2051:       <choice computer='0'>Sort by section then student</choice>
 2052:       <choice computer='1'>Sort by students across sections.</choice>
 2053:     </choices>
 2054: 
 2055:     $resource_selector
 2056:     </state>
 2057: CHOOSE_STUDENTS1
 2058: 
 2059: 	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_ANON2);
 2060:   <state name="CHOOSE_ANON2" title="Select Students and Resources">
 2061:     <nextstate>PAGESIZE</nextstate>
 2062:     <message><table><tr><td><b>Number of anonymous assignments to print?</b></td><td></message>
 2063:     <string variable="NUMBER_TO_PRINT_TOTAL" maxlength="5" size="5">
 2064:        <validator>
 2065: 	if (((\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}+0) < 1) &&
 2066: 	    !\$helper->{'VARS'}{'REUSE_OLD_CODES'}) {
 2067: 	    return "You need to specify the number of assignments to print";
 2068: 	}
 2069: 	return undef;
 2070:        </validator>
 2071:     </string>
 2072:     <message></td></tr><tr><td></message>
 2073:     <message><b>Names to store the CODEs under for later:</b></message>
 2074:     <message></td><td></message>
 2075:     <string variable="ANON_CODE_STORAGE_NAME" maxlength="50" size="20" />
 2076:     <message></td></tr><tr><td></message>
 2077:     <message><b>Bubble sheet type:</b></message>
 2078:     <message></td><td></message>
 2079:     <dropdown variable="CODE_OPTION" multichoice="0" allowempty="0">
 2080:     $codechoice
 2081:     </dropdown>
 2082:     <message></td></tr></table></message>
 2083:     <message><hr width='33%' /></message>
 2084:     <message><b>Reprint a set of saved CODEs:</b></message>
 2085:     <dropdown variable="REUSE_OLD_CODES">
 2086:         $namechoice
 2087:     </dropdown>
 2088:     <message><hr width='33%' /></message>
 2089:     $resource_selector
 2090:   </state>
 2091: CHOOSE_ANON2
 2092:     }
 2093: 
 2094:     # FIXME: That RE should come from a library somewhere.
 2095:     if ((((&Apache::lonnet::allowed('bre',$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 $env{'request.role.adv'} and $subdir ne $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/') {    
 2096:         push @{$printChoices}, ["<b>".&mt('Problems')."</b> ".&mt('from current subdirectory')." <b><i>$subdir</i></b>", 'problems_from_directory', 'CHOOSE_FROM_SUBDIR'];
 2097: 
 2098:         my $f = '$filename';
 2099:         my $xmlfrag = <<CHOOSE_FROM_SUBDIR;
 2100:   <state name="CHOOSE_FROM_SUBDIR" title="Select File(s) from <b><small>$subdir</small></b> to print">
 2101:     <message>(mark them then click "next" button) <br /></message>
 2102:     <files variable="FILES" multichoice='1'>
 2103:       <nextstate>PAGESIZE</nextstate>
 2104:       <filechoice>return '$subdir';</filechoice>
 2105: CHOOSE_FROM_SUBDIR
 2106:         
 2107:         # this is broken up because I really want interpolation above,
 2108:         # and I really DON'T want it below
 2109:         $xmlfrag .= <<'CHOOSE_FROM_SUBDIR';
 2110:       <filefilter>return Apache::lonhelper::files::not_old_version($filename) &&
 2111: 	  $filename =~ m/\.(problem|exam|quiz|assess|survey|form|library)$/;
 2112:       </filefilter>
 2113:       </files>
 2114:     </state>
 2115: CHOOSE_FROM_SUBDIR
 2116:         &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 2117:     }
 2118: 
 2119:     # Allow the user to select any sequence in the course, feed it to
 2120:     # another resource selector for that sequence
 2121:     if (!$helper->{VARS}->{'construction'}) {
 2122: 	push @$printChoices, ["<b>Resources</b> from <b>selected sequence</b> in course",
 2123: 			      'select_sequences', 'CHOOSE_SEQUENCE'];
 2124: 	my $escapedSequenceName = $helper->{VARS}->{'SEQUENCE'};
 2125: 	#Escape apostrophes and backslashes for Perl
 2126: 	$escapedSequenceName =~ s/\\/\\\\/g;
 2127: 	$escapedSequenceName =~ s/'/\\'/g;
 2128: 	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_FROM_ANY_SEQUENCE);
 2129:   <state name="CHOOSE_SEQUENCE" title="Select Sequence To Print From">
 2130:     <message>Select the sequence to print resources from:</message>
 2131:     <resource variable="SEQUENCE">
 2132:       <nextstate>CHOOSE_FROM_ANY_SEQUENCE</nextstate>
 2133:       <filterfunc>return \$res->is_sequence;</filterfunc>
 2134:       <valuefunc>return $urlValue;</valuefunc>
 2135:       <option text='Newpage' variable='FINISHPAGE' />
 2136:       </resource>
 2137:     </state>
 2138:   <state name="CHOOSE_FROM_ANY_SEQUENCE" title="Select Resources To Print">
 2139:     <message>(mark desired resources then click "next" button) <br /></message>
 2140:     <resource variable="RESOURCES" multichoice="1" toponly='1' addstatus="1"
 2141:               closeallpages="1">
 2142:       <nextstate>PAGESIZE</nextstate>
 2143:       <filterfunc>return $isProblem</filterfunc>
 2144:       <mapurl evaluate='1'>return '$escapedSequenceName';</mapurl>
 2145:       <valuefunc>return $symbFilter;</valuefunc>
 2146:       <option text='Newpage' variable='FINISHPAGE' />
 2147:       </resource>
 2148:     </state>
 2149: CHOOSE_FROM_ANY_SEQUENCE
 2150: }
 2151: 
 2152:     # Generate the first state, to select which resources get printed.
 2153:     Apache::lonhelper::state->new("START", "Select Printing Options:");
 2154:     $paramHash = Apache::lonhelper::getParamHash();
 2155:     $paramHash->{MESSAGE_TEXT} = "";
 2156:     Apache::lonhelper::message->new();
 2157:     $paramHash = Apache::lonhelper::getParamHash();
 2158:     $paramHash->{'variable'} = 'PRINT_TYPE';
 2159:     $paramHash->{CHOICES} = $printChoices;
 2160:     Apache::lonhelper::choices->new();
 2161: 
 2162:     my $startedTable = 0; # have we started an HTML table yet? (need
 2163:                           # to close it later)
 2164: 
 2165:     if (($env{'request.role.adv'} and &Apache::lonnet::allowed('vgr',$env{'request.course.id'})) or 
 2166: 	($helper->{VARS}->{'construction'} eq '1')) {
 2167: 	addMessage("<hr width='33%' /><table><tr><td align='right'>Print: </td><td>");
 2168:         $paramHash = Apache::lonhelper::getParamHash();
 2169: 	$paramHash->{'variable'} = 'ANSWER_TYPE';   
 2170: 	$helper->declareVar('ANSWER_TYPE');         
 2171:         $paramHash->{CHOICES} = [
 2172:                                    ['Without Answers', 'yes'],
 2173:                                    ['With Answers', 'no'],
 2174:                                    ['Only Answers', 'only']
 2175:                                 ];
 2176:         Apache::lonhelper::dropdown->new();
 2177: 	addMessage("</td></tr>");
 2178: 	$startedTable = 1;
 2179:     }
 2180: 
 2181:     if ($env{'request.role.adv'}) {
 2182: 	if (!$startedTable) {
 2183: 	    addMessage("<hr width='33%' /><table><tr><td align='right'>LaTeX mode: </td><td>");
 2184: 	    $startedTable = 1;
 2185: 	} else {
 2186: 	    addMessage("<tr><td align='right'>LaTeX mode: </td><td>");
 2187: 	}
 2188:         $paramHash = Apache::lonhelper::getParamHash();
 2189: 	$paramHash->{'variable'} = 'LATEX_TYPE';   
 2190: 	$helper->declareVar('LATEX_TYPE');  
 2191: 	if ($helper->{VARS}->{'construction'} eq '1') {       
 2192: 	    $paramHash->{CHOICES} = [
 2193: 				     ['standard LaTeX mode', 'standard'], 
 2194: 				     ['LaTeX batchmode', 'batchmode'], ];
 2195: 	} else {
 2196: 	    $paramHash->{CHOICES} = [
 2197: 				     ['LaTeX batchmode', 'batchmode'],
 2198: 				     ['standard LaTeX mode', 'standard'] ];
 2199: 	}
 2200:         Apache::lonhelper::dropdown->new();
 2201:  
 2202: 	addMessage("</td></tr><tr><td align='right'>Print Table of Contents: </td><td>");
 2203:         $paramHash = Apache::lonhelper::getParamHash();
 2204: 	$paramHash->{'variable'} = 'TABLE_CONTENTS';   
 2205: 	$helper->declareVar('TABLE_CONTENTS');         
 2206:         $paramHash->{CHOICES} = [
 2207:                                    ['No', 'no'],
 2208:                                    ['Yes', 'yes'] ];
 2209:         Apache::lonhelper::dropdown->new();
 2210: 	addMessage("</td></tr>");
 2211:         
 2212: 	if (not $helper->{VARS}->{'construction'}) {
 2213: 	    addMessage("<tr><td align='right'>Print Index: </td><td>");
 2214: 	    $paramHash = Apache::lonhelper::getParamHash();
 2215: 	    $paramHash->{'variable'} = 'TABLE_INDEX';   
 2216: 	    $helper->declareVar('TABLE_INDEX');         
 2217: 	    $paramHash->{CHOICES} = [
 2218: 				     ['No', 'no'],
 2219: 				     ['Yes', 'yes'] ];
 2220: 	    Apache::lonhelper::dropdown->new();
 2221: 	    addMessage("</td></tr>");
 2222: 	    addMessage("<tr><td align='right'>Print Discussions: </td><td>");
 2223: 	    $paramHash = Apache::lonhelper::getParamHash();
 2224: 	    $paramHash->{'variable'} = 'PRINT_DISCUSSIONS';   
 2225: 	    $helper->declareVar('PRINT_DISCUSSIONS');         
 2226: 	    $paramHash->{CHOICES} = [
 2227: 				     ['No', 'no'],
 2228: 				     ['Yes', 'yes'] ];
 2229: 	    Apache::lonhelper::dropdown->new();
 2230: 	    addMessage("</td></tr>");
 2231: 
 2232:             #  If advanced roles, then allow to show all foils.
 2233: 
 2234:             if ($env{'request.role.adv'}) {
 2235: 		addMessage("<tr><td align = 'right'>  </td><td>");
 2236: 		$paramHash = Apache::lonhelper::getParamHash();
 2237: 		$paramHash->{'multichoice'} = "true";
 2238: 		$paramHash->{'allowempty'}  = "true";
 2239: 		$paramHash->{'variable'}   = "showallfoils";
 2240: 		$paramHash->{'CHOICES'} = [ ["Show all foils", "1"] ];
 2241: 		Apache::lonhelper::choices->new();
 2242: 		addMessage("</td></tr>");
 2243:             }
 2244: 
 2245: 	}
 2246: 
 2247: 	if ($helper->{'VARS'}->{'construction'}) { 
 2248: 	    my $stylevalue=$env{'construct.style'};
 2249: 	    my $xmlfrag .= <<"RNDSEED";
 2250: 	    <message><tr><td align='right'>Use random seed:  </td><td></message>
 2251: 	    <string variable="curseed" size="15" maxlength="15">
 2252: 		<defaultvalue>
 2253: 	            return $helper->{VARS}->{'curseed'};
 2254: 	        </defaultvalue>
 2255: 	    </string>
 2256: 	     <message></td></tr><tr><td align="right">Use style file:</td><td></message>
 2257:              <message><input type="text" size="40" name="style_file_value" value="$stylevalue"  />&nbsp; <a href="javascript:openbrowser('helpform','style_file','sty')">Select style file</a> </td><tr><td></message>
 2258: 	     <choices allowempty="1" multichoice="true" variable="showallfoils">
 2259:                 <choice computer="1">Show all foils?</choice>
 2260:              </choices>
 2261: 	     <message></td></tr></message>
 2262: RNDSEED
 2263:             &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 2264: 	    $helper->{'VARS'}->{'style_file'}=$env{'form.style_file_value'};
 2265: 	    
 2266: 	} 
 2267: 
 2268:     }
 2269: 
 2270: 
 2271: 
 2272: 
 2273:     if ($startedTable) {
 2274: 	addMessage("</table>");
 2275:     }
 2276: 
 2277:     Apache::lonprintout::page_format_state->new("FORMAT");
 2278: 
 2279:     # Generate the PAGESIZE state which will offer the user the margin
 2280:     # choices if they select one column
 2281:     Apache::lonhelper::state->new("PAGESIZE", "Set Margins");
 2282:     Apache::lonprintout::page_size_state->new('pagesize', 'FORMAT', 'FINAL');
 2283: 
 2284: 
 2285:     $helper->process();
 2286: 
 2287:     # MANUAL BAILOUT CONDITION:
 2288:     # If we're in the "final" state, bailout and return to handler
 2289:     if ($helper->{STATE} eq 'FINAL') {
 2290:         return $helper;
 2291:     }    
 2292: 
 2293:     $r->print($helper->display());
 2294: 
 2295:     &Apache::lonhelper::unregisterHelperTags();
 2296: 
 2297:     return OK;
 2298: }
 2299: 
 2300: 
 2301: 1;
 2302: 
 2303: package Apache::lonprintout::page_format_state;
 2304: 
 2305: =pod
 2306: 
 2307: =head1 Helper element: page_format_state
 2308: 
 2309: See lonhelper.pm documentation for discussion of the helper framework.
 2310: 
 2311: Apache::lonprintout::page_format_state is an element that gives the 
 2312: user an opportunity to select the page layout they wish to print 
 2313: with: Number of columns, portrait/landscape, and paper size. If you 
 2314: want to change the paper size choices, change the @paperSize array 
 2315: contents in this package.
 2316: 
 2317: page_format_state is always directly invoked in lonprintout.pm, so there
 2318: is no tag interface. You actually pass parameters to the constructor.
 2319: 
 2320: =over 4
 2321: 
 2322: =item * B<new>(varName): varName is where the print information will be stored in the format FIXME.
 2323: 
 2324: =back
 2325: 
 2326: =cut
 2327: 
 2328: use Apache::lonhelper;
 2329: 
 2330: no strict;
 2331: @ISA = ("Apache::lonhelper::element");
 2332: use strict;
 2333: use Apache::lonlocal;
 2334: use Apache::lonnet;
 2335: 
 2336: my $maxColumns = 2;
 2337: # it'd be nice if these all worked
 2338: #my @paperSize = ("letter [8 1/2x11 in]", "legal [8 1/2x14 in]", 
 2339: #                 "tabloid (ledger) [11x17 in]", "executive [7 1/2x10 in]",
 2340: #                 "a2 [420x594 mm]", "a3 [297x420 mm]", "a4 [210x297 mm]", 
 2341: #                 "a5 [148x210 mm]", "a6 [105x148 mm]" );
 2342: my @paperSize = ("letter [8 1/2x11 in]", "legal [8 1/2x14 in]", 
 2343: 		 "a4 [210x297 mm]");
 2344: 
 2345: # Tentative format: Orientation (L = Landscape, P = portrait) | Colnum |
 2346: #                   Paper type
 2347: 
 2348: sub new { 
 2349:     my $self = Apache::lonhelper::element->new();
 2350: 
 2351:     shift;
 2352: 
 2353:     $self->{'variable'} = shift;
 2354:     my $helper = Apache::lonhelper::getHelper();
 2355:     $helper->declareVar($self->{'variable'});
 2356:     bless($self);
 2357:     return $self;
 2358: }
 2359: 
 2360: sub render {
 2361:     my $self = shift;
 2362:     my $helper = Apache::lonhelper::getHelper();
 2363:     my $result = '';
 2364:     my $var = $self->{'variable'};
 2365:     my $PageLayout=&mt('Page layout');
 2366:     my $NumberOfColumns=&mt('Number of columns');
 2367:     my $PaperType=&mt('Paper type');
 2368:     $result .= <<STATEHTML;
 2369: 
 2370: <hr width="33%" />
 2371: <table cellpadding="3">
 2372:   <tr>
 2373:     <td align="center"><b>$PageLayout</b></td>
 2374:     <td align="center"><b>$NumberOfColumns</b></td>
 2375:     <td align="center"><b>$PaperType</b></td>
 2376:   </tr>
 2377:   <tr>
 2378:     <td>
 2379:       <label><input type="radio" name="${var}.layout" value="L" /> Landscape </label><br />
 2380:       <label><input type="radio" name="${var}.layout" value="P" checked='1'  /> Portrait </label>
 2381:     </td>
 2382:     <td align="center">
 2383:       <select name="${var}.cols">
 2384: STATEHTML
 2385: 
 2386:     my $i;
 2387:     for ($i = 1; $i <= $maxColumns; $i++) {
 2388:         if ($i == 2) {
 2389:             $result .= "<option value='$i' selected>$i</option>\n";
 2390:         } else {
 2391:             $result .= "<option value='$i'>$i</option>\n";
 2392:         }
 2393:     }
 2394: 
 2395:     $result .= "</select></td><td>\n";
 2396:     $result .= "<select name='${var}.paper'>\n";
 2397: 
 2398:     my %parmhash=&Apache::lonnet::coursedescription($env{'request.course.id'});
 2399:     my $DefaultPaperSize=$parmhash{'default_paper_size'};
 2400:     if ($DefaultPaperSize eq '') {$DefaultPaperSize='letter';}
 2401:     $i = 0;
 2402:     foreach (@paperSize) {
 2403: 	$_=~/(\w+)/;
 2404: 	my $papersize=$1;
 2405:         if ($paperSize[$i]=~/$DefaultPaperSize/) {
 2406:             $result .= "<option selected value='$papersize'>" . $paperSize[$i] . "</option>\n";
 2407:         } else {
 2408:             $result .= "<option value='$papersize'>" . $paperSize[$i] . "</option>\n";
 2409:         }
 2410:         $i++;
 2411:     }
 2412:     $result .= "</select></td></tr></table>";
 2413:     return $result;
 2414: }
 2415: 
 2416: sub postprocess {
 2417:     my $self = shift;
 2418: 
 2419:     my $var = $self->{'variable'};
 2420:     my $helper = Apache::lonhelper->getHelper();
 2421:     $helper->{VARS}->{$var} = 
 2422:         $env{"form.$var.layout"} . '|' . $env{"form.$var.cols"} . '|' .
 2423:         $env{"form.$var.paper"};
 2424:     return 1;
 2425: }
 2426: 
 2427: 1;
 2428: 
 2429: package Apache::lonprintout::page_size_state;
 2430: 
 2431: =pod
 2432: 
 2433: =head1 Helper element: page_size_state
 2434: 
 2435: See lonhelper.pm documentation for discussion of the helper framework.
 2436: 
 2437: Apache::lonprintout::page_size_state is an element that gives the 
 2438: user the opportunity to further refine the page settings if they
 2439: select a single-column page.
 2440: 
 2441: page_size_state is always directly invoked in lonprintout.pm, so there
 2442: is no tag interface. You actually pass parameters to the constructor.
 2443: 
 2444: =over 4
 2445: 
 2446: =item * B<new>(varName): varName is where the print information will be stored in the format FIXME.
 2447: 
 2448: =back
 2449: 
 2450: =cut
 2451: 
 2452: use Apache::lonhelper;
 2453: use Apache::lonnet;
 2454: no strict;
 2455: @ISA = ("Apache::lonhelper::element");
 2456: use strict;
 2457: 
 2458: 
 2459: 
 2460: sub new { 
 2461:     my $self = Apache::lonhelper::element->new();
 2462: 
 2463:     shift; # disturbs me (probably prevents subclassing) but works (drops
 2464:            # package descriptor)... - Jeremy
 2465: 
 2466:     $self->{'variable'} = shift;
 2467:     my $helper = Apache::lonhelper::getHelper();
 2468:     $helper->declareVar($self->{'variable'});
 2469: 
 2470:     # The variable name of the format element, so we can look into 
 2471:     # $helper->{VARS} to figure out whether the columns are one or two
 2472:     $self->{'formatvar'} = shift;
 2473: 
 2474:     # The state to transition to after selection, or after discovering
 2475:     # the cols are not set to 1
 2476:     $self->{NEXTSTATE} = shift;
 2477:     bless($self);
 2478:     return $self;
 2479: }
 2480: 
 2481: sub render {
 2482:     my $self = shift;
 2483:     my $helper = Apache::lonhelper::getHelper();
 2484:     my $result = '';
 2485:     my $var = $self->{'variable'};
 2486: 
 2487:     if (defined $self->{ERROR_MSG}) {
 2488:         $result .= '<br /><font color="#FF0000">' . $self->{ERROR_MSG} . '</font><br />';
 2489:     }
 2490: 
 2491:     $result .= <<ELEMENTHTML;
 2492: 
 2493: <p>How should the column be formatted?</p>
 2494: 
 2495: <table cellpadding='3'>
 2496:   <tr>
 2497:     <td align='right'><b>Width</b>:</td>
 2498:     <td align='left'><input type='text' name='$var.width' value='18' size='4'></td>
 2499:     <td align='left'>
 2500:       <select name='$var.widthunit'>
 2501:         <option>cm</option><option>in</option>
 2502:       </select>
 2503:     </td>
 2504:   </tr>
 2505:   <tr>
 2506:     <td align='right'><b>Height</b>:</td>
 2507:     <td align='left'><input type='text' name="$var.height" value="25.9" size='4'></td>
 2508:     <td align='left'>
 2509:       <select name='$var.heightunit'>
 2510:         <option>cm</option><option>in</option>
 2511:       </select>
 2512:     </td>
 2513:   </tr>
 2514:   <tr>
 2515:     <td align='right'><b>Left margin</b>:</td>
 2516:     <td align='left'><input type='text' name='$var.lmargin' value='-1.5' size='4'></td>
 2517:     <td align='left'>
 2518:       <select name='$var.lmarginunit'>
 2519:         <option>cm</option><option>in</option>
 2520:       </select>
 2521:     </td>
 2522:   </tr>
 2523: </table>
 2524: 
 2525: <p>Hint: Some instructors like to leave scratch space for the student by
 2526: making the width much smaller than the width of the page.</p>
 2527: 
 2528: ELEMENTHTML
 2529: 
 2530:     return $result;
 2531: }
 2532: 
 2533: # If the user didn't select 1 column, skip this state.
 2534: sub preprocess {
 2535:     my $self = shift;
 2536:     my $helper = Apache::lonhelper::getHelper();
 2537: 
 2538:     my $format = $helper->{VARS}->{$self->{'formatvar'}};
 2539:     if (substr($format, 2, 1) ne '1') {
 2540:         $helper->changeState($self->{NEXTSTATE});
 2541:     }
 2542:    
 2543:     return 1;
 2544: }
 2545: 
 2546: sub postprocess {
 2547:     my $self = shift;
 2548: 
 2549:     my $var = $self->{'variable'};
 2550:     my $helper = Apache::lonhelper->getHelper();
 2551:     my $width = $helper->{VARS}->{$var .'.width'} = $env{"form.${var}.width"}; 
 2552:     my $height = $helper->{VARS}->{$var .'.height'} = $env{"form.${var}.height"}; 
 2553:     my $lmargin = $helper->{VARS}->{$var .'.lmargin'} = $env{"form.${var}.lmargin"}; 
 2554:     $helper->{VARS}->{$var .'.widthunit'} = $env{"form.${var}.widthunit"}; 
 2555:     $helper->{VARS}->{$var .'.heightunit'} = $env{"form.${var}.heightunit"}; 
 2556:     $helper->{VARS}->{$var .'.lmarginunit'} = $env{"form.${var}.lmarginunit"}; 
 2557: 
 2558:     my $error = '';
 2559: 
 2560:     # /^-?[0-9]+(\.[0-9]*)?$/ -> optional minus, at least on digit, followed 
 2561:     # by an optional period, followed by digits, ending the string
 2562: 
 2563:     if ($width !~  /^-?[0-9]+(\.[0-9]*)?$/) {
 2564:         $error .= "Invalid width; please type only a number.<br />\n";
 2565:     }
 2566:     if ($height !~  /^-?[0-9]+(\.[0-9]*)?$/) {
 2567:         $error .= "Invalid height; please type only a number.<br />\n";
 2568:     }
 2569:     if ($lmargin !~  /^-?[0-9]+(\.[0-9]*)?$/) {
 2570:         $error .= "Invalid left margin; please type only a number.<br />\n";
 2571:     }
 2572: 
 2573:     if (!$error) {
 2574:         Apache::lonhelper::getHelper()->changeState($self->{NEXTSTATE});
 2575:         return 1;
 2576:     } else {
 2577:         $self->{ERROR_MSG} = $error;
 2578:         return 0;
 2579:     }
 2580: }
 2581: 
 2582: 
 2583: 
 2584: __END__
 2585: 

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