File:  [LON-CAPA] / loncom / interface / lonprintout.pm
Revision 1.354: download - view: text, annotated - select for diffs
Mon Jan 31 12:03:08 2005 UTC (19 years, 4 months ago) by foxr
Branches: MAIN
CVS tags: HEAD
Defect 3782 - First crack.. needs a bit more thinking to be sure that it
works correctly for all things.. however at least the server does not
crash when asking for all resources in the course and it does seem to
kick out a promising set of results, however there may be problems with problems.

    1: #  The LearningOnline Network
    2: # Printout
    3: #
    4: # $Id: lonprintout.pm,v 1.354 2005/01/31 12:03:08 foxr Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: #
   26: # http://www.lon-capa.org/
   27: #
   28: #
   29: package Apache::lonprintout;
   30: 
   31: use strict;
   32: use Apache::Constants qw(:common :http);
   33: use Apache::lonxml;
   34: use Apache::lonnet;
   35: use Apache::loncommon;
   36: use Apache::inputtags;
   37: use Apache::grades;
   38: use Apache::edit;
   39: use Apache::File();
   40: use Apache::lonnavmaps;
   41: use Apache::lonratedt;
   42: use POSIX qw(strftime);
   43: use Apache::lonlocal;
   44: 
   45: my $LaTeXwidth = 0;
   46: 
   47: 
   48: #   Compare two students by name.  The students are in the form
   49: #   returned by the helper:
   50: #      user:domain:section:last,   first:status
   51: #   This is a helper function for the perl sort built-in  therefore:
   52: # Implicit Inputs:
   53: #    $a     - The first element to compare (global)
   54: #    $b     - The second element to compare (global)
   55: # Returns:
   56: #   -1   - $a < $b
   57: #    0   - $a == $b
   58: #   +1   - $a > $b
   59: #   Note that the initial comparison is done on the last names with the
   60: #   first names only used to break the tie.
   61: #
   62: #
   63: sub compare_names {
   64:     #  First split the names up into the primary fields.
   65: 
   66:     my ($u1, $d1, $s1, $n1, $stat1) = split(/:/, $a);
   67:     my ($u2, $d2, $s2, $n2, $stat2) = split(/:/, $b);
   68: 
   69:     # Now split the last name and first name of each n:
   70:     #
   71: 
   72:     my ($l1,$f1) = split(/,/, $n1);
   73:     my ($l2,$f2) = split(/,/, $n2);
   74: 
   75:     # We don't bother to remove the leading/trailing whitespace from the
   76:     # firstname, unless the last names compare identical.
   77: 
   78:     if($l1 lt $l2) {
   79: 	return -1;
   80:     }
   81:     if($l1 gt $l2) {
   82: 	return  1;
   83:     }
   84: 
   85:     # Break the tie on the first name, but there are leading (possibly trailing
   86:     # whitespaces to get rid of first 
   87:     #
   88:     $f1 =~ s/^\s+//;		# Remove leading...
   89:     $f1 =~ s/\s+$//;		# Trailing spaces from first 1...
   90:     
   91:     $f2 =~ s/^\s+//;
   92:     $f2 =~ s/\s+$//;		# And the same for first 2...
   93: 
   94:     if($f1 lt $f2) {
   95: 	return -1;
   96:     }
   97:     if($f1 gt $f2) {
   98: 	return 1;
   99:     }
  100:     
  101:     #  Must be the same name.
  102: 
  103:     return 0;
  104: }
  105: 
  106: sub latex_header_footer_remove {
  107:     my $text = shift;
  108:     $text =~ s/\\end{document}//;
  109:     $text =~ s/\\documentclass([^&]*)\\begin{document}//;
  110:     return $text;
  111: }
  112: 
  113: 
  114: sub character_chart {
  115:     my $result = shift;	
  116:     $result =~ s/&\#0?0?(7|9);//g;
  117:     $result =~ s/&\#0?(10|13);//g;
  118:     $result =~ s/&\#0?32;/ /g;
  119:     $result =~ s/&\#0?33;/!/g;
  120:     $result =~ s/&(\#0?34|quot);/\"/g;
  121:     $result =~ s/&\#0?35;/\\\#/g;
  122:     $result =~ s/&\#0?36;/\\\$/g;
  123:     $result =~ s/&\#0?37;/\\%/g; 
  124:     $result =~ s/&(\#0?38|amp);/\\&/g; 
  125:     $result =~ s/&\#(0?39|146);/\'/g;
  126:     $result =~ s/&\#0?40;/(/g;
  127:     $result =~ s/&\#0?41;/)/g;
  128:     $result =~ s/&\#0?42;/\*/g;
  129:     $result =~ s/&\#0?43;/\+/g;
  130:     $result =~ s/&\#(0?44|130);/,/g;
  131:     $result =~ s/&\#0?45;/-/g;
  132:     $result =~ s/&\#0?46;/\./g;
  133:     $result =~ s/&\#0?47;/\//g;
  134:     $result =~ s/&\#0?48;/0/g;
  135:     $result =~ s/&\#0?49;/1/g;
  136:     $result =~ s/&\#0?50;/2/g;
  137:     $result =~ s/&\#0?51;/3/g;
  138:     $result =~ s/&\#0?52;/4/g;
  139:     $result =~ s/&\#0?53;/5/g;
  140:     $result =~ s/&\#0?54;/6/g;
  141:     $result =~ s/&\#0?55;/7/g;
  142:     $result =~ s/&\#0?56;/8/g;
  143:     $result =~ s/&\#0?57;/9/g;
  144:     $result =~ s/&\#0?58;/:/g;
  145:     $result =~ s/&\#0?59;/;/g;
  146:     $result =~ s/&(\#0?60|lt|\#139);/\$<\$/g;
  147:     $result =~ s/&\#0?61;/\\ensuremath\{=\}/g;
  148:     $result =~ s/&(\#0?62|gt|\#155);/\\ensuremath\{>\}/g;
  149:     $result =~ s/&\#0?63;/\?/g;
  150:     $result =~ s/&\#0?65;/A/g;
  151:     $result =~ s/&\#0?66;/B/g;
  152:     $result =~ s/&\#0?67;/C/g;
  153:     $result =~ s/&\#0?68;/D/g;
  154:     $result =~ s/&\#0?69;/E/g;
  155:     $result =~ s/&\#0?70;/F/g;
  156:     $result =~ s/&\#0?71;/G/g;
  157:     $result =~ s/&\#0?72;/H/g;
  158:     $result =~ s/&\#0?73;/I/g;
  159:     $result =~ s/&\#0?74;/J/g;
  160:     $result =~ s/&\#0?75;/K/g;
  161:     $result =~ s/&\#0?76;/L/g;
  162:     $result =~ s/&\#0?77;/M/g;
  163:     $result =~ s/&\#0?78;/N/g;
  164:     $result =~ s/&\#0?79;/O/g;
  165:     $result =~ s/&\#0?80;/P/g;
  166:     $result =~ s/&\#0?81;/Q/g;
  167:     $result =~ s/&\#0?82;/R/g;
  168:     $result =~ s/&\#0?83;/S/g;
  169:     $result =~ s/&\#0?84;/T/g;
  170:     $result =~ s/&\#0?85;/U/g;
  171:     $result =~ s/&\#0?86;/V/g;
  172:     $result =~ s/&\#0?87;/W/g;
  173:     $result =~ s/&\#0?88;/X/g;
  174:     $result =~ s/&\#0?89;/Y/g;
  175:     $result =~ s/&\#0?90;/Z/g;
  176:     $result =~ s/&\#0?91;/[/g;
  177:     $result =~ s/&\#0?92;/\\ensuremath\{\\setminus\}/g;
  178:     $result =~ s/&\#0?93;/]/g;
  179:     $result =~ s/&\#(0?94|136);/\\ensuremath\{\\wedge\}/g;
  180:     $result =~ s/&\#(0?95|138|154);/\\underline{\\makebox[2mm]{\\strut}}/g;
  181:     $result =~ s/&\#(0?96|145);/\`/g;
  182:     $result =~ s/&\#0?97;/a/g;
  183:     $result =~ s/&\#0?98;/b/g;
  184:     $result =~ s/&\#0?99;/c/g;
  185:     $result =~ s/&\#100;/d/g;
  186:     $result =~ s/&\#101;/e/g;
  187:     $result =~ s/&\#102;/f/g;
  188:     $result =~ s/&\#103;/g/g;
  189:     $result =~ s/&\#104;/h/g;
  190:     $result =~ s/&\#105;/i/g;
  191:     $result =~ s/&\#106;/j/g;
  192:     $result =~ s/&\#107;/k/g;
  193:     $result =~ s/&\#108;/l/g;
  194:     $result =~ s/&\#109;/m/g;
  195:     $result =~ s/&\#110;/n/g;
  196:     $result =~ s/&\#111;/o/g;
  197:     $result =~ s/&\#112;/p/g;
  198:     $result =~ s/&\#113;/q/g;
  199:     $result =~ s/&\#114;/r/g;
  200:     $result =~ s/&\#115;/s/g;
  201:     $result =~ s/&\#116;/t/g;
  202:     $result =~ s/&\#117;/u/g;
  203:     $result =~ s/&\#118;/v/g;
  204:     $result =~ s/&\#119;/w/g;
  205:     $result =~ s/&\#120;/x/g;
  206:     $result =~ s/&\#121;/y/g;
  207:     $result =~ s/&\#122;/z/g;
  208:     $result =~ s/&\#123;/\\{/g;
  209:     $result =~ s/&\#124;/\|/g;
  210:     $result =~ s/&\#125;/\\}/g;
  211:     $result =~ s/&\#126;/\~/g;
  212:     $result =~ s/&\#131;/\\textflorin /g;
  213:     $result =~ s/&\#132;/\"/g;
  214:     $result =~ s/&\#133;/\\ensuremath\{\\ldots\}/g;
  215:     $result =~ s/&\#134;/\\ensuremath\{\\dagger\}/g;
  216:     $result =~ s/&\#135;/\\ensuremath\{\\ddagger\}/g;
  217:     $result =~ s/&\#137;/\\textperthousand /g;
  218:     $result =~ s/&\#140;/{\\OE}/g;
  219:     $result =~ s/&\#147;/\`\`/g;
  220:     $result =~ s/&\#148;/\'\'/g;
  221:     $result =~ s/&\#149;/\\ensuremath\{\\bullet\}/g;
  222:     $result =~ s/&\#150;/--/g;
  223:     $result =~ s/&\#151;/---/g;
  224:     $result =~ s/&\#152;/\\ensuremath\{\\sim\}/g;
  225:     $result =~ s/&\#153;/\\texttrademark /g;
  226:     $result =~ s/&\#156;/\\oe/g;
  227:     $result =~ s/&\#159;/\\\"Y/g;
  228:     $result =~ s/&(\#160|nbsp);/~/g;
  229:     $result =~ s/&(\#161|iexcl);/!\`/g;
  230:     $result =~ s/&(\#162|cent);/\\textcent /g;
  231:     $result =~ s/&(\#163|pound);/\\pounds /g; 
  232:     $result =~ s/&(\#164|curren);/\\textcurrency /g;
  233:     $result =~ s/&(\#165|yen);/\\textyen /g;
  234:     $result =~ s/&(\#166|brvbar);/\\textbrokenbar /g;
  235:     $result =~ s/&(\#167|sect);/\\textsection /g;
  236:     $result =~ s/&(\#168|uml);/\\texthighdieresis /g;
  237:     $result =~ s/&(\#169|copy);/\\copyright /g;
  238:     $result =~ s/&(\#170|ordf);/\\textordfeminine /g;
  239:     $result =~ s/&(\#172|not);/\\ensuremath\{\\neg\}/g;
  240:     $result =~ s/&(\#173|shy);/ - /g;
  241:     $result =~ s/&(\#174|reg);/\\textregistered /g;
  242:     $result =~ s/&(\#175|macr);/\\ensuremath\{^{-}\}/g;
  243:     $result =~ s/&(\#176|deg);/\\ensuremath\{^{\\circ}\}/g;
  244:     $result =~ s/&(\#177|plusmn);/\\ensuremath\{\\pm\}/g;
  245:     $result =~ s/&(\#178|sup2);/\\ensuremath\{^2\}/g;
  246:     $result =~ s/&(\#179|sup3);/\\ensuremath\{^3\}/g;
  247:     $result =~ s/&(\#180|acute);/\\textacute /g;
  248:     $result =~ s/&(\#181|micro);/\\ensuremath\{\\mu\}/g;
  249:     $result =~ s/&(\#182|para);/\\P/g;
  250:     $result =~ s/&(\#183|middot);/\\ensuremath\{\\cdot\}/g;
  251:     $result =~ s/&(\#184|cedil);/\\c{\\strut}/g;
  252:     $result =~ s/&(\#185|sup1);/\\ensuremath\{^1\}/g;
  253:     $result =~ s/&(\#186|ordm);/\\textordmasculine /g;
  254:     $result =~ s/&(\#188|frac14);/\\textonequarter /g;
  255:     $result =~ s/&(\#189|frac12);/\\textonehalf /g;
  256:     $result =~ s/&(\#190|frac34);/\\textthreequarters /g;
  257:     $result =~ s/&(\#191|iquest);/?\`/g;   
  258:     $result =~ s/&(\#192|Agrave);/\\\`{A}/g;  
  259:     $result =~ s/&(\#193|Aacute);/\\\'{A}/g; 
  260:     $result =~ s/&(\#194|Acirc);/\\^{A}/g;
  261:     $result =~ s/&(\#195|Atilde);/\\~{A}/g;
  262:     $result =~ s/&(\#196|Auml);/\\\"{A}/g; 
  263:     $result =~ s/&(\#197|Aring);/{\\AA}/g;
  264:     $result =~ s/&(\#198|AElig);/{\\AE}/g;
  265:     $result =~ s/&(\#199|Ccedil);/\\c{c}/g;
  266:     $result =~ s/&(\#200|Egrave);/\\\`{E}/g;  
  267:     $result =~ s/&(\#201|Eacute);/\\\'{E}/g;    
  268:     $result =~ s/&(\#202|Ecirc);/\\^{E}/g;
  269:     $result =~ s/&(\#203|Euml);/\\\"{E}/g;
  270:     $result =~ s/&(\#204|Igrave);/\\\`{I}/g;
  271:     $result =~ s/&(\#205|Iacute);/\\\'{I}/g;    
  272:     $result =~ s/&(\#206|Icirc);/\\^{I}/g;
  273:     $result =~ s/&(\#207|Iuml);/\\\"{I}/g;    
  274:     $result =~ s/&(\#209|Ntilde);/\\~{N}/g;
  275:     $result =~ s/&(\#210|Ograve);/\\\`{O}/g;
  276:     $result =~ s/&(\#211|Oacute);/\\\'{O}/g;
  277:     $result =~ s/&(\#212|Ocirc);/\\^{O}/g;
  278:     $result =~ s/&(\#213|Otilde);/\\~{O}/g;
  279:     $result =~ s/&(\#214|Ouml);/\\\"{O}/g;    
  280:     $result =~ s/&(\#215|times);/\\ensuremath\{\\times\}/g;
  281:     $result =~ s/&(\#216|Oslash);/{\\O}/g;
  282:     $result =~ s/&(\#217|Ugrave);/\\\`{U}/g;    
  283:     $result =~ s/&(\#218|Uacute);/\\\'{U}/g;
  284:     $result =~ s/&(\#219|Ucirc);/\\^{U}/g;
  285:     $result =~ s/&(\#220|Uuml);/\\\"{U}/g;
  286:     $result =~ s/&(\#221|Yacute);/\\\'{Y}/g;
  287:     $result =~ s/&(\#223|szlig);/{\\ss}/g;
  288:     $result =~ s/&(\#224|agrave);/\\\`{a}/g;
  289:     $result =~ s/&(\#225|aacute);/\\\'{a}/g;
  290:     $result =~ s/&(\#226|acirc);/\\^{a}/g;
  291:     $result =~ s/&(\#227|atilde);/\\~{a}/g;
  292:     $result =~ s/&(\#228|auml);/\\\"{a}/g;
  293:     $result =~ s/&(\#229|aring);/{\\aa}/g;
  294:     $result =~ s/&(\#230|aelig);/{\\ae}/g;
  295:     $result =~ s/&(\#231|ccedil);/\\c{c}/g;
  296:     $result =~ s/&(\#232|egrave);/\\\`{e}/g;
  297:     $result =~ s/&(\#233|eacute);/\\\'{e}/g;
  298:     $result =~ s/&(\#234|ecirc);/\\^{e}/g;
  299:     $result =~ s/&(\#235|euml);/\\\"{e}/g;
  300:     $result =~ s/&(\#236|igrave);/\\\`{i}/g;
  301:     $result =~ s/&(\#237|iacute);/\\\'{i}/g;
  302:     $result =~ s/&(\#238|icirc);/\\^{i}/g;
  303:     $result =~ s/&(\#239|iuml);/\\\"{i}/g;
  304:     $result =~ s/&(\#240|eth);/\\ensuremath\{\\partial\}/g;
  305:     $result =~ s/&(\#241|ntilde);/\\~{n}/g;
  306:     $result =~ s/&(\#242|ograve);/\\\`{o}/g;
  307:     $result =~ s/&(\#243|oacute);/\\\'{o}/g;
  308:     $result =~ s/&(\#244|ocirc);/\\^{o}/g;
  309:     $result =~ s/&(\#245|otilde);/\\~{o}/g;
  310:     $result =~ s/&(\#246|ouml);/\\\"{o}/g;
  311:     $result =~ s/&(\#247|divide);/\\ensuremath\{\\div\}/g;
  312:     $result =~ s/&(\#248|oslash);/{\\o}/g;
  313:     $result =~ s/&(\#249|ugrave);/\\\`{u}/g; 
  314:     $result =~ s/&(\#250|uacute);/\\\'{u}/g;
  315:     $result =~ s/&(\#251|ucirc);/\\^{u}/g;
  316:     $result =~ s/&(\#252|uuml);/\\\"{u}/g;
  317:     $result =~ s/&(\#253|yacute);/\\\'{y}/g;
  318:     $result =~ s/&(\#255|yuml);/\\\"{y}/g;
  319:     $result =~ s/&\#952;/\\ensuremath\{\\theta\}/g;
  320: #Greek Alphabet
  321:     $result =~ s/&(alpha|\#945);/\\ensuremath\{\\alpha\}/g;
  322:     $result =~ s/&(beta|\#946);/\\ensuremath\{\\beta\}/g;
  323:     $result =~ s/&(gamma|\#947);/\\ensuremath\{\\gamma\}/g;
  324:     $result =~ s/&(delta|\#948);/\\ensuremath\{\\delta\}/g;
  325:     $result =~ s/&(epsilon|\#949);/\\ensuremath\{\\epsilon\}/g;
  326:     $result =~ s/&(zeta|\#950);/\\ensuremath\{\\zeta\}/g;
  327:     $result =~ s/&(eta|\#951);/\\ensuremath\{\\eta\}/g;
  328:     $result =~ s/&(theta|\#952);/\\ensuremath\{\\theta\}/g;
  329:     $result =~ s/&(iota|\#953);/\\ensuremath\{\\iota\}/g;
  330:     $result =~ s/&(kappa|\#954);/\\ensuremath\{\\kappa\}/g;
  331:     $result =~ s/&(lambda|\#955);/\\ensuremath\{\\lambda\}/g;
  332:     $result =~ s/&(mu|\#956);/\\ensuremath\{\\mu\}/g;
  333:     $result =~ s/&(nu|\#957);/\\ensuremath\{\\nu\}/g;
  334:     $result =~ s/&(xi|\#958);/\\ensuremath\{\\xi\}/g;
  335:     $result =~ s/&(omicron|\#959);/o/g;
  336:     $result =~ s/&(pi|\#960);/\\ensuremath\{\\pi\}/g;
  337:     $result =~ s/&(rho|\#961);/\\ensuremath\{\\rho\}/g;
  338:     $result =~ s/&(sigma|\#963);/\\ensuremath\{\\sigma\}/g;
  339:     $result =~ s/&(tau|\#964);/\\ensuremath\{\\tau\}/g;
  340:     $result =~ s/&(upsilon|\#965);/\\ensuremath\{\\upsilon\}/g;
  341:     $result =~ s/&(phi|\#966);/\\ensuremath\{\\phi\}/g;
  342:     $result =~ s/&(chi|\#967);/\\ensuremath\{\\chi\}/g;
  343:     $result =~ s/&(psi|\#968);/\\ensuremath\{\\psi\}/g;
  344:     $result =~ s/&(omega|\#969);/\\ensuremath\{\\omega\}/g;
  345:     $result =~ s/&(thetasym|\#977);/\\ensuremath\{\\vartheta\}/g;
  346:     $result =~ s/&(piv|\#982);/\\ensuremath\{\\varpi\}/g;
  347:     $result =~ s/&(Alpha|\#913);/A/g;
  348:     $result =~ s/&(Beta|\#914);/B/g;
  349:     $result =~ s/&(Gamma|\#915);/\\ensuremath\{\\Gamma\}/g;
  350:     $result =~ s/&(Delta|\#916);/\\ensuremath\{\\Delta\}/g;
  351:     $result =~ s/&(Epsilon|\#917);/E/g;
  352:     $result =~ s/&(Zeta|\#918);/Z/g;
  353:     $result =~ s/&(Eta|\#919);/H/g;
  354:     $result =~ s/&(Theta|\#920);/\\ensuremath\{\\Theta\}/g;
  355:     $result =~ s/&(Iota|\#921);/I/g;
  356:     $result =~ s/&(Kappa|\#922);/K/g;
  357:     $result =~ s/&(Lambda|\#923);/\\ensuremath\{\\Lambda\}/g;
  358:     $result =~ s/&(Mu|\#924);/M/g;
  359:     $result =~ s/&(Nu|\#925);/N/g;
  360:     $result =~ s/&(Xi|\#926);/\\ensuremath\{\\Xi\}/g;
  361:     $result =~ s/&(Omicron|\#927);/O/g;
  362:     $result =~ s/&(Pi|\#928);/\\ensuremath\{\\Pi\}/g;
  363:     $result =~ s/&(Rho|\#929);/P/g;
  364:     $result =~ s/&(Sigma|\#931);/\\ensuremath\{\\Sigma\}/g;
  365:     $result =~ s/&(Tau|\#932);/T/g;
  366:     $result =~ s/&(Upsilon|\#933);/\\ensuremath\{\\Upsilon\}/g;
  367:     $result =~ s/&(Phi|\#934);/\\ensuremath\{\\Phi\}/g;
  368:     $result =~ s/&(Chi|\#935);/X/g;
  369:     $result =~ s/&(Psi|\#936);/\\ensuremath\{\\Psi\}/g;
  370:     $result =~ s/&(Omega|\#937);/\\ensuremath\{\\Omega\}/g;
  371: #Arrows (extended HTML 4.01)
  372:     $result =~ s/&(larr|\#8592);/\\ensuremath\{\\leftarrow\}/g;
  373:     $result =~ s/&(uarr|\#8593);/\\ensuremath\{\\uparrow\}/g;
  374:     $result =~ s/&(rarr|\#8594);/\\ensuremath\{\\rightarrow\}/g;
  375:     $result =~ s/&(darr|\#8595);/\\ensuremath\{\\downarrow\}/g;
  376:     $result =~ s/&(harr|\#8596);/\\ensuremath\{\\leftrightarrow\}/g;
  377:     $result =~ s/&(lArr|\#8656);/\\ensuremath\{\\Leftarrow\}/g;
  378:     $result =~ s/&(uArr|\#8657);/\\ensuremath\{\\Uparrow\}/g;
  379:     $result =~ s/&(rArr|\#8658);/\\ensuremath\{\\Rightarrow\}/g;
  380:     $result =~ s/&(dArr|\#8659);/\\ensuremath\{\\Downarrow\}/g;
  381:     $result =~ s/&(hArr|\#8660);/\\ensuremath\{\\Leftrightarrow\}/g;
  382: #Mathematical Operators (extended HTML 4.01)
  383:     $result =~ s/&(forall|\#8704);/\\ensuremath\{\\forall\}/g;
  384:     $result =~ s/&(part|\#8706);/\\ensuremath\{\\partial\}/g;
  385:     $result =~ s/&(exist|\#8707);/\\ensuremath\{\\exists\}/g;
  386:     $result =~ s/&(empty|\#8709);/\\ensuremath\{\\emptyset\}/g;
  387:     $result =~ s/&(nabla|\#8711);/\\ensuremath\{\\nabla\}/g;
  388:     $result =~ s/&(isin|\#8712);/\\ensuremath\{\\in\}/g;
  389:     $result =~ s/&(notin|\#8713);/\\ensuremath\{\\notin\}/g;
  390:     $result =~ s/&(ni|\#8715);/\\ensuremath\{\\ni\}/g;
  391:     $result =~ s/&(prod|\#8719);/\\ensuremath\{\\prod\}/g;
  392:     $result =~ s/&(sum|\#8721);/\\ensuremath\{\\sum\}/g;
  393:     $result =~ s/&(minus|\#8722);/\\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' => [],
  450: 	     '2' => []
  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' => [],
  460: 	     '2' => []
  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:     $result =~ s/(\s)(\s+)/$1/g; #removes more than one empty space
  655:     $result =~ s/\\\\\s*\\vskip/\\vskip/gm;
  656:     $result =~ s/\\\\\s*\\noindent\s*(\\\\)+/\\\\\\noindent /g;
  657:     $result =~ s/{\\par }\s*\\\\/\\\\/gm;
  658:     $result =~ s/\\\\\s+\[/ \[/g;
  659:     #conversion of html characters to LaTeX equivalents
  660:     if ($result =~ m/&(\w+|#\d+);/) {
  661: 	$result = &character_chart($result);
  662:     }
  663:     $result =~ s/(\\end{tabular})\s*\\vskip 0 mm/$1/g;
  664:     $result =~ s/(\\begin{enumerate})\s*\\noindent/$1/g;
  665: 
  666:     return $result;
  667: }
  668: 
  669: 
  670: sub index_table {
  671:     my $currentURL = shift;
  672:     my $insex_string='';
  673:     $currentURL=~s/\.([^\/+])$/\.$1\.meta/;
  674:     $insex_string=&Apache::lonnet::metadata($currentURL,'keywords');
  675:     return $insex_string;
  676: }
  677: 
  678: 
  679: sub IndexCreation {
  680:     my ($texversion,$currentURL)=@_;
  681:     my @key_words=split(/,/,&index_table($currentURL));
  682:     my $chunk='';
  683:     my $st=index $texversion,'\addcontentsline{toc}{subsection}{';
  684:     if ($st>0) {
  685: 	for (my $i=0;$i<3;$i++) {$st=(index $texversion,'}',$st+1);}
  686: 	$chunk=substr($texversion,0,$st+1);
  687: 	substr($texversion,0,$st+1)=' ';
  688:     }
  689:     foreach my $key_word (@key_words) {
  690: 	if ($key_word=~/\S+/) {
  691: 	    $texversion=~s/\b($key_word)\b/$1 \\index{$key_word} /i;
  692: 	}
  693:     }			
  694:     if ($st>0) {substr($texversion,0,1)=$chunk;}
  695:     return $texversion;
  696: }
  697: 
  698: sub print_latex_header {
  699:     my $mode=shift;
  700:     my $output='\documentclass[letterpaper]{article}';
  701:     if ($mode eq 'batchmode') {
  702: 	$output.='\batchmode';
  703:     }
  704:     $output.='\newcommand{\keephidden}[1]{}\renewcommand{\deg}{$^{\circ}$}'."\n".
  705: 	     '\usepackage{longtable}\usepackage{textcomp}\usepackage{makeidx}'."\n".
  706: 	     '\usepackage[dvips]{graphicx}\usepackage{epsfig}'."\n".
  707: 	     '\usepackage{picins}\usepackage{calc}'."\n".
  708: 	     '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}'."\n".
  709: 	     '\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}'."\n".
  710: 	     '\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}'."\n".
  711: 	     '\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}'."\n".
  712: 	     '\setlength{\abovedisplayshortskip}{-0.04in}'."\n".
  713: 	     '\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'."\n".
  714: 	     '\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large'."\n".
  715: 	     '\textbf{Index}} \newline \setlength{\rightmargin}{0in}'."\n".
  716: 	     '\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}'."\n".
  717: 	     '\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}'."\n".
  718: 	     '\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}'."\n".
  719: 	     '\setlength{\abovedisplayshortskip}{-0.04in}'."\n".
  720: 	     '\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}\begin{document}'."\n";
  721:     return $output;	     
  722: }
  723: 
  724: sub path_to_problem {
  725:     my ($urlp,$colwidth)=@_;
  726:     my $newurlp = '';
  727:     $colwidth=~s/\s*mm\s*$//;
  728: #characters average about 2 mm in width
  729:     if (length($urlp)*2 > $LaTeXwidth) {
  730: 	my @elements = split '/',$urlp;
  731: 	my $curlength=0;
  732: 	foreach my $element (@elements) {
  733: 	    if ($curlength+(length($element)*2) > $colwidth) {
  734: 		$newurlp .=  '|\vskip -1 mm \noindent \verb|';
  735: 		$curlength=0;
  736: 	    } else {
  737: 		$curlength+=length($element)*2;
  738: 	    }
  739: 	    $newurlp.='/'.$element;
  740: 	}
  741:     } else {
  742: 	$newurlp=$urlp;
  743:     }
  744:     return '{\small\noindent\verb|'.$newurlp.'|\vskip 0 mm}';
  745: }
  746: 
  747: sub recalcto_mm {
  748:     my $textwidth=shift;
  749:     my $LaTeXwidth;
  750:     if ($textwidth=~/(-?\d+\.?\d*)\s*cm/) {
  751: 	$LaTeXwidth = $1*10;
  752:     } elsif ($textwidth=~/(-?\d+\.?\d*)\s*mm/) {
  753: 	$LaTeXwidth = $1;
  754:     } elsif ($textwidth=~/(-?\d+\.?\d*)\s*in/) {
  755: 	$LaTeXwidth = $1*25.4;
  756:     }
  757:     $LaTeXwidth.=' mm';
  758:     return $LaTeXwidth;
  759: }
  760: 
  761: sub get_textwidth {
  762:     my ($helper,$LaTeXwidth)=@_;
  763:     my $textwidth=$LaTeXwidth;
  764:     if ($helper->{'VARS'}->{'pagesize.width'}=~/\d+/ &&
  765: 	$helper->{'VARS'}->{'pagesize.widthunit'}=~/\w+/) {
  766: 	$textwidth=&recalcto_mm($helper->{'VARS'}->{'pagesize.width'}.' '.
  767: 				$helper->{'VARS'}->{'pagesize.widthunit'});
  768:     }
  769:     return $textwidth;
  770: }
  771: 
  772: 
  773: sub unsupported {
  774:     my ($currentURL,$mode)=@_;
  775:     if ($mode ne '') {$mode='\\'.$mode}
  776:     my $result.= &print_latex_header($mode);
  777:     if ($currentURL=~/\/ext\//) {
  778: 	$result.=' \strut \\\\ THIS IS EXTERNAL RESOURCE WITH URL \strut \\\\ '.$currentURL.' ';
  779:     } else {
  780: 	$result.=$currentURL;
  781:     }
  782:     $result.= '\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill} \end{document}';
  783:     return $result;
  784: }
  785: 
  786: 
  787: sub output_data {
  788:     my ($r,$helper,$rparmhash) = @_;
  789:     my %parmhash = %$rparmhash;
  790:     my $bodytag=&Apache::loncommon::bodytag('Preparing Printout');
  791:     $r->print(<<ENDPART);
  792: <html>
  793: <script type="text/javascript" language="Javascript" >
  794:     var editbrowser;
  795:     function openbrowser(formname,elementname,only,omit) {
  796:         var url = '/res/?';
  797:         if (editbrowser == null) {
  798:             url += 'launch=1&';
  799:         }
  800:         url += 'catalogmode=interactive&';
  801:         url += 'mode=parmset&';
  802:         url += 'form=' + formname + '&';
  803:         if (only != null) {
  804:             url += 'only=' + only + '&';
  805:         } 
  806:         if (omit != null) {
  807:             url += 'omit=' + omit + '&';
  808:         }
  809:         url += 'element=' + elementname + '';
  810:         var title = 'Browser';
  811:         var options = 'scrollbars=1,resizable=1,menubar=0';
  812:         options += ',width=700,height=600';
  813:         editbrowser = open(url,title,options,'1');
  814:         editbrowser.focus();
  815:     }
  816: </script>
  817: <head>
  818: <title>LON-CAPA output for printing</title>
  819: </head>
  820: $bodytag
  821: Please stand by while processing your print request, this may take some time ...
  822: ENDPART
  823: 
  824:     my $format_from_helper = $helper->{'VARS'}->{'FORMAT'};
  825:     my ($result,$selectionmade) = ('','');
  826:     my $number_of_columns = 1; #used only for pages to determine the width of the cell
  827:     my @temporary_array=split /\|/,$format_from_helper;
  828:     my ($laystyle,$numberofcolumns,$papersize)=@temporary_array;
  829:     if ($laystyle eq 'L') {
  830: 	$laystyle='album';
  831:     } else {
  832: 	$laystyle='book';
  833:     }
  834:     my ($textwidth,$textheight,$oddoffset,$evenoffset) = &page_format($papersize,$laystyle,$numberofcolumns);
  835:     my $assignment =  $ENV{'form.assignment'};
  836:     my $LaTeXwidth=&recalcto_mm($textwidth); 
  837:     my @print_array=();
  838:     my @student_names=();
  839:     
  840:     if ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'current_document') {
  841:       #-- single document - problem, page, html, xml, ...
  842: 	my ($currentURL,$cleanURL);
  843: 	if ($helper->{'VARS'}->{'construction'} ne '1') {
  844:             #prints published resource
  845: 	    $currentURL=$helper->{'VARS'}->{'postdata'};
  846: 	    $cleanURL=&Apache::lonenc::check_decrypt($currentURL);
  847: 	} else {
  848:             #prints resource from the construction space
  849: 	    $currentURL='/'.$helper->{'VARS'}->{'filename'};
  850: 	    if ($currentURL=~/([^?]+)/) {$currentURL=$1;}
  851: 	    $cleanURL=$currentURL;
  852: 	}
  853: 	$selectionmade = 1;
  854: 	if ($cleanURL=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
  855: 	    my $rndseed=time;
  856: 	    my $texversion='';
  857: 	    if ($helper->{'VARS'}->{'ANSWER_TYPE'} ne 'only') {
  858: 		my %moreenv;
  859: 		$moreenv{'request.filename'}=$cleanURL;
  860: 		if ($helper->{'VARS'}->{'style_file'}=~/\w/) {
  861: 		    $moreenv{'construct.style'}=$helper->{'VARS'}->{'style_file'};
  862: 		    my $dom = $ENV{'user.domain'};
  863: 		    my $user = $ENV{'user.name'};
  864: 		    my $put_result = &Apache::lonnet::put('environment',{'construct.style'=>$helper->{'VARS'}->{'style_file'}},$dom,$user);
  865: 		}
  866: 		my %form;
  867:                 if ($helper->{'VARS'}->{'probstatus'} eq 'exam') {$form{'problemtype'}='exam';}
  868: 		$form{'grade_target'}='tex';
  869: 		$form{'textwidth'}=&get_textwidth($helper,$LaTeXwidth);
  870: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
  871: 		$form{'suppress_tries'}=$parmhash{'suppress_tries'};
  872: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
  873: 		$form{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
  874: 		if ($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') {$form{'problem_split'}='yes';}
  875: 		if ($helper->{'VARS'}->{'curseed'}) {
  876: 		    $rndseed=$helper->{'VARS'}->{'curseed'};
  877: 		}
  878: 		$form{'rndseed'}=$rndseed;
  879: 		&Apache::lonnet::appenv(%moreenv);
  880: 		&Apache::lonnet::delenv('form.counter');
  881: 		&Apache::lonxml::init_counter();
  882: 		$texversion.=&Apache::lonnet::ssi($currentURL,%form);
  883: 		&Apache::lonnet::delenv('form.counter');
  884: 		&Apache::lonnet::delenv('request.filename');
  885: 	    }
  886: 	    if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
  887: 	       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
  888: 		my %form;
  889: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
  890: 		$form{'grade_target'}='answer';
  891: 		$form{'answer_output_mode'}='tex';
  892: 		$form{'rndseed'}=$rndseed;
  893: 		my $answer=&Apache::lonnet::ssi($currentURL,%form);
  894: 		if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
  895: 		    $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
  896: 		} else {
  897: 		    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
  898: 		    if ($helper->{'VARS'}->{'construction'} ne '1') {
  899: 			$texversion.='\vskip 0 mm \noindent\textbf{'.&Apache::lonnet::gettitle($helper->{'VARS'}->{'symb'}).'}\vskip 0 mm ';
  900: 			$texversion.=&path_to_problem($cleanURL,$LaTeXwidth);
  901: 		    } else {
  902: 			$texversion.='\vskip 0 mm \noindent\textbf{Prints from construction space - there is no title.}\vskip 0 mm ';
  903: 			my $URLpath=$cleanURL;
  904: 			$URLpath=~s/~([^\/]+)/public_html\/$1\/$1/;
  905: 			$texversion.=&path_to_problem ($URLpath,$LaTeXwidth);
  906: 		    }
  907: 		    $texversion.='\vskip 1 mm '.$answer.'\end{document}';
  908: 		}
  909: 	    }
  910: 	    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
  911: 		$texversion=&IndexCreation($texversion,$currentURL);
  912: 	    }
  913: 	    if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
  914: 		$texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$currentURL| \\strut\\\\\\strut /;
  915: 
  916: 	    }
  917: 	    $result .= $texversion;
  918: 	    if ($currentURL=~m/\.page\s*$/) {
  919: 		($result,$number_of_columns) = &page_cleanup($result);
  920: 	    }
  921:         } elsif ($currentURL=~/\.sequence$/ && $helper->{'VARS'}->{'construction'} eq '1') {
  922:             #printing content of sequence from the construction space	
  923: 	    my $flag_latex_header_remove = 'NO'; 
  924: 	    my $rndseed=time;
  925: 	    if ($helper->{'VARS'}->{'curseed'}) {
  926: 		$rndseed=$helper->{'VARS'}->{'curseed'};
  927: 	    }
  928: 	    $currentURL=~s|\/~([^\/]+)\/|\/home\/$1\/public_html\/|;
  929: 	    my $errtext=&Apache::lonratedt::mapread($currentURL);
  930: 	    for (my $member=0;$member<=$#Apache::lonratedt::order;$member++) {
  931: 		$Apache::lonratedt::resources[$Apache::lonratedt::order[$member]]=~/^([^:]*):([^:]*):/;
  932: 		my $urlp=$2;
  933: 		if ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library|xml|html|htm|xhtml|xhtm)$/) {
  934: 		    my $texversion='';
  935: 		    if ($helper->{'VARS'}->{'ANSWER_TYPE'} ne 'only') {
  936: 			my %form;
  937: 			$form{'grade_target'}='tex';
  938: 			$form{'textwidth'}=&get_textwidth($helper,$LaTeXwidth);
  939: 			$form{'problem_split'}=$parmhash{'problem_stream_switch'};
  940: 			$form{'suppress_tries'}=$parmhash{'suppress_tries'};
  941: 			$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
  942: 			$form{'rndseed'}=$rndseed;
  943: 			$texversion=&Apache::lonnet::ssi($urlp,%form);
  944: 		    }
  945: 		    if((($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
  946: 		       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) && 
  947: 		       ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library|page)$/)) {
  948: 			my %form;
  949: 			$form{'grade_target'}='answer';
  950: 			$form{'answer_output_mode'}='tex';
  951: 			$form{'rndseed'}=$rndseed;
  952: 			$form{'problem_split'}=$parmhash{'problem_stream_switch'};
  953:                         if ($urlp=~/\/res\//) {$ENV{'request.state'}='published';}
  954: 			my $answer=&Apache::lonnet::ssi($urlp,%form);
  955: 			if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
  956: 			    $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
  957: 			} else {
  958: 			    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
  959: 			    $texversion.='\vskip 0 mm \noindent\textbf{'.&Apache::lonnet::gettitle($helper->{'VARS'}->{'symb'}).'}\vskip 0 mm ';
  960: 			    $texversion.=&path_to_problem ($currentURL,$LaTeXwidth);
  961: 			    $texversion.='\vskip 1 mm '.$answer.'\end{document}';
  962: 			}
  963: 		    }
  964: 		    if ($flag_latex_header_remove ne 'NO') {
  965: 			$texversion = &latex_header_footer_remove($texversion);
  966: 		    } else {
  967: 			$texversion =~ s/\\end{document}//;
  968: 		    }
  969: 		    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
  970: 			$texversion=&IndexCreation($texversion,$urlp);
  971: 		    }
  972: 		    if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URpL'} eq 'yes') {
  973: 			$texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$urlp| \\strut\\\\\\strut /;
  974: 		    }
  975: 		    $result.=$texversion;
  976: 		    $flag_latex_header_remove = 'YES';
  977: 		} elsif ($urlp=~/\.(sequence|page)$/) {
  978: 		    $result.='\strut\newline\noindent Sequence/page '.$urlp.'\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent ';
  979: 		}  
  980: 	    }
  981: 	    if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\begin{document})/$1 \\fbox\{RANDOM SEED IS $rndseed\} /;}
  982: 	    $result .= '\end{document}';   
  983: 	} elsif ($cleanURL=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) { 
  984: 		my %form;
  985: 		$form{'grade_target'}='tex';
  986: 		$form{'textwidth'}=&get_textwidth($helper,$LaTeXwidth);
  987: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
  988: 		if ($currentURL=~/\/syllabus$/) {$currentURL=~s/\/res//;}
  989: 		my $texversion=&Apache::lonnet::ssi($currentURL,%form);
  990: 		$result .= $texversion;
  991: 	} else {
  992: 	    $result.=&unsupported($currentURL,$helper->{'VARS'}->{'LATEX_TYPE'});
  993: 	}
  994:     } elsif (($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems')       or
  995:              ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems_pages') or
  996:              ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_problems')       or
  997: 	     ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_resources')      or # BUGBUG
  998: 	     ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'select_sequences')) { 
  999:         #-- produce an output string
 1000: 	if ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems') {
 1001: 	    $selectionmade = 2;
 1002: 	} elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems_pages') {
 1003: 	    $selectionmade = 3;
 1004: 	} elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_problems') {
 1005: 	    $selectionmade = 4;
 1006: 	} elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_resources') {  #BUGBUG
 1007: 	    $selectionmade = 4;
 1008: 	} elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'select_sequences') {
 1009: 	    $selectionmade = 7;
 1010: 	}
 1011: 	my %form=();	   
 1012: 	$form{'grade_target'}='tex';
 1013: 	$form{'textwidth'}=&get_textwidth($helper,$LaTeXwidth);
 1014: 	$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 1015: 	$form{'suppress_tries'}=$parmhash{'suppress_tries'};
 1016: 	$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 1017: 	$form{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
 1018: 	if ($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') {$form{'problem_split'}='yes';}
 1019: 	my $flag_latex_header_remove = 'NO';
 1020: 	my $flag_page_in_sequence = 'NO';
 1021: 	my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
 1022: 	my %page_breaks;
 1023: 	foreach my $break (split /\|\|\|/, $helper->{'VARS'}->{'FINISHPAGE'}) {
 1024: 	    $page_breaks{$break} = 1;
 1025: 	}
 1026: 	my $prevassignment='';
 1027: 	&Apache::lonnet::delenv('form.counter');
 1028: 	&Apache::lonxml::init_counter();
 1029: 	for (my $i=0;$i<=$#master_seq;$i++) {
 1030: 
 1031: 	    # Note due to document structure, not allowed to put \newpage
 1032: 	    # prior to the first resource
 1033: 
 1034: 	    if (defined $page_breaks{$master_seq[$i]}) {
 1035: 		if($i != 0) {
 1036: 		    $result.="\\newpage\n";
 1037: 		}
 1038: 	    }
 1039: 	    my (undef,undef,$urlp)=&Apache::lonnet::decode_symb($master_seq[$i]);
 1040: 	    $urlp=&Apache::lonnet::clutter($urlp);
 1041: 	    $form{'symb'}=$master_seq[$i];
 1042: 	    my ($sequence)=&Apache::lonnet::decode_symb($master_seq[$i]);
 1043: 	    my $assignment=&Apache::lonxml::latex_special_symbols(&Apache::lonnet::gettitle($sequence),'header'); #tittle of the assignment which contains this problem
 1044: 	    if ($selectionmade==7) {$helper->{VARS}->{'assignment'}=$assignment;}
 1045: 	    if ($i==0) {$prevassignment=$assignment;}
 1046: 	    my $texversion='';
 1047: 	    if ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
 1048: 		$texversion.=&Apache::lonnet::ssi($urlp,%form);
 1049: 		if ($urlp=~/\.page$/) {
 1050: 		    ($texversion,my $number_of_columns_page) = &page_cleanup($texversion);
 1051: 		    if ($number_of_columns_page > $number_of_columns) {$number_of_columns=$number_of_columns_page;} 
 1052: 		    $texversion =~ s/\\end{document}\d*/\\end{document}/;
 1053: 		    $flag_page_in_sequence = 'YES';
 1054: 		} 
 1055: 		my $lonidsdir=$r->dir_config('lonIDsDir');
 1056: 		my $envfile=$ENV{'user.environment'};
 1057: 		$envfile=~/\/([^\/]+)\.id$/;
 1058: 		$envfile=$1;
 1059: 		&Apache::lonnet::transfer_profile_to_env($lonidsdir,$envfile);
 1060: 		my $current_counter=$ENV{'form.counter'};
 1061: 		if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 1062: 		   ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 1063: 		    my %form;
 1064: 		    $form{'grade_target'}='answer';
 1065: 		    $form{'answer_output_mode'}='tex';
 1066: 		    my $answer=&Apache::lonnet::ssi($urlp,%form);
 1067: 		    &Apache::lonnet::appenv(('form.counter' => $current_counter));
 1068: 		    if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 1069: 			$texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
 1070: 		    } else {
 1071: 			if ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library)$/) {
 1072: 			    $texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 1073: 			    $texversion.='\vskip 0 mm \noindent\textbf{'.&Apache::lonnet::gettitle($urlp).'}\vskip 0 mm ';
 1074: 			    $texversion.=&path_to_problem ($urlp,$LaTeXwidth);
 1075: 			    $texversion.='\vskip 1 mm '.$answer;
 1076: 			} else {
 1077: 			    $texversion='';
 1078: 			}
 1079: 		    }
 1080: 		}
 1081: 		if ($flag_latex_header_remove ne 'NO') {
 1082: 		    $texversion = &latex_header_footer_remove($texversion);
 1083: 		} else {
 1084: 		    $texversion =~ s/\\end{document}//;
 1085: 		}
 1086: 		if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 1087: 		    $texversion=&IndexCreation($texversion,$urlp);
 1088: 		}
 1089: 		if (($selectionmade == 4) and ($assignment ne $prevassignment)) {
 1090: 		    my $name = &get_name();
 1091: 		    my $courseidinfo = &get_course();
 1092: 		    if (defined($courseidinfo)) { $courseidinfo=' - '.$courseidinfo }
 1093: 		    $prevassignment=$assignment;
 1094: 		    $result .='\newpage \noindent\parbox{\minipagewidth}{\noindent\\lhead{\\textit{\\textbf{'.$name.'}}'.$courseidinfo.' \\hfill \\thepage \\\\ \\textit{'.$assignment.'}}} \vskip 5 mm ';
 1095: 		}
 1096: 		$result .= $texversion;
 1097: 		$flag_latex_header_remove = 'YES';   
 1098: 	    } elsif ($urlp=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) { 
 1099: 		my %form;
 1100: 		$form{'grade_target'}='tex';
 1101: 		$form{'textwidth'}=&get_textwidth($helper,$LaTeXwidth);
 1102: 		$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 1103: 		if ($urlp=~/\/syllabus$/) {$urlp=~s/\/res//;}
 1104: 		my $texversion=&Apache::lonnet::ssi($urlp,%form);
 1105: 		if ($flag_latex_header_remove ne 'NO') {
 1106: 		    $texversion = &latex_header_footer_remove($texversion);
 1107: 		} else {
 1108: 		    $texversion =~ s/\\end{document}/\\vskip 0\.5mm\\noindent\\makebox\[\\textwidth\/\$number_of_columns\]\[b\]\{\\hrulefill\}/;
 1109: 		}
 1110: 		$result .= $texversion;
 1111: 		$flag_latex_header_remove = 'YES'; 
 1112: 	    } else {
 1113: 		$texversion=&unsupported($urlp,$helper->{'VARS'}->{'LATEX_TYPE'});
 1114: 		if ($flag_latex_header_remove ne 'NO') {
 1115: 		    $texversion = &latex_header_footer_remove($texversion);
 1116: 		} else {
 1117: 		    $texversion =~ s/\\end{document}//;
 1118: 		}
 1119: 		$result .= $texversion;
 1120: 		$flag_latex_header_remove = 'YES';   
 1121: 	    }	    
 1122: 	    if (&Apache::loncommon::connection_aborted($r)) { last; }
 1123: 	}
 1124: 	&Apache::lonnet::delenv('form.counter');
 1125: 	if ($flag_page_in_sequence eq 'YES') {
 1126: 	    $result =~ s/\\usepackage{calc}/\\usepackage{calc}\\usepackage{longtable}/;
 1127: 	}	
 1128: 	$result .= '\end{document}';
 1129:      } elsif (($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_for_students') ||
 1130: 	      ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'resources_for_students')){
 1131: 
 1132: 
 1133:      #-- prints assignments for whole class or for selected students  
 1134: 	 my $type;
 1135: 	 if ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_for_students') {
 1136: 	     $selectionmade=5;
 1137: 	     $type='problems';
 1138: 	 } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'resources_for_students') {
 1139: 	     $selectionmade=8;
 1140: 	     $type='resources';
 1141: 	 }
 1142: 	 my @students=split /\|\|\|/, $helper->{'VARS'}->{'STUDENTS'};
 1143: 	 #   The normal sort order is by section then by students within the
 1144: 	 #   section. If the helper var student_sort is 1, then the user has elected
 1145: 	 #   to override this and output the students by name.
 1146: 	 #    Each element of the students array is of the form:
 1147: 	 #       username:domain:section:last, first:status
 1148: 	 #    
 1149: 	 #   
 1150: 	 if ($helper->{'VARS'}->{'student_sort'}    eq 1) {
 1151: 	     @students = sort compare_names  @students;
 1152: 	 }
 1153:          if ($helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq '0' ||
 1154: 	     $helper->{'VARS'}->{'NUMBER_TO_PRINT'} eq 'all' ) {
 1155: 	     $helper->{'VARS'}->{'NUMBER_TO_PRINT'}=$#students+1;
 1156: 	 }
 1157: 	 my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
 1158: 
 1159: 	 #loop over students
 1160: 	 my $flag_latex_header_remove = 'NO'; 
 1161: 	 my %moreenv;
 1162:          $moreenv{'instructor_comments'}='hide';
 1163: 	 $moreenv{'textwidth'}=&get_textwidth($helper,$LaTeXwidth);
 1164: 	 $moreenv{'print_discussions'}=$helper->{'VARS'}->{'PRINT_DISCUSSIONS'};
 1165: 	 $moreenv{'problem_split'}    = $parmhash{'problem_stream_switch'};
 1166: 	 if ($helper->{'VARS'}->{'PRINT_DISCUSSIONS'} eq 'yes') {$moreenv{'problem_split'}='yes';}
 1167: 	 my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Print Status','Class Print Status',$#students+1,'inline','75');
 1168: 	 my $student_counter=-1;
 1169: 	 foreach my $person (@students) {
 1170: 
 1171:              my $duefile="/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.due";
 1172: 	     if (-e $duefile) {
 1173: 		 my $temp_file = Apache::File->new('>>'.$duefile);
 1174: 		 print $temp_file "1969\n";
 1175: 	     }
 1176: 	     $student_counter++;
 1177: 	     my $i=int($student_counter/$helper->{'VARS'}{'NUMBER_TO_PRINT'});
 1178: 	     my ($output,$fullname)=&print_resources($r,$helper,
 1179: 						     $person,$type,
 1180: 						     \%moreenv,\@master_seq,
 1181: 						     $flag_latex_header_remove);
 1182: 	     $print_array[$i].=$output;
 1183: 	     $student_names[$i].=$person.':'.$fullname.'_END_';
 1184: 	     &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,&mt('last student').' '.$fullname);
 1185: 	     $flag_latex_header_remove = 'YES';
 1186: 	     if (&Apache::loncommon::connection_aborted($r)) { last; }
 1187: 	 }
 1188: 	 &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
 1189: 	 $result .= $print_array[0].'  \end{document}';
 1190:      } elsif (($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_for_anon')     ||
 1191: 	      ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'resources_for_anon')  ) { 
 1192: 	 my $cdom =$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
 1193: 	 my $cnum =$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
 1194: 	 my $num_todo=$helper->{'VARS'}->{'NUMBER_TO_PRINT_TOTAL'};
 1195: 	 my $code_name=$helper->{'VARS'}->{'ANON_CODE_STORAGE_NAME'};
 1196: 	 my $old_name=$helper->{'VARS'}->{'REUSE_OLD_CODES'};
 1197: 	 my %moreenv = ('textwidth' => &get_textwidth($helper,$LaTeXwidth));
 1198: 	 $moreenv{'problem_split'}    = $parmhash{'problem_stream_switch'};
 1199: 	 my $seed=time+($$<<16)+($$);
 1200: 	 my @allcodes;
 1201: 	 if ($old_name) {
 1202: 	     my %result=&Apache::lonnet::get('CODEs',[$old_name],$cdom,$cnum);
 1203: 	     @allcodes=split(',',$result{$old_name});
 1204: 	     $num_todo=scalar(@allcodes);
 1205: 	 } else {
 1206: 	     my %allcodes;
 1207: 	     srand($seed);
 1208: 	     for (my $i=0;$i<$num_todo;$i++) {
 1209: 		 $moreenv{'CODE'}=&get_CODE(\%allcodes,$i,$seed,'6');
 1210: 	     }
 1211: 	     if ($code_name) {
 1212: 		 &Apache::lonnet::put('CODEs',
 1213: 				      {$code_name =>join(',',keys(%allcodes))},
 1214: 				      $cdom,$cnum);
 1215: 	     }
 1216: 	     @allcodes=keys(%allcodes);
 1217: 	 }
 1218: 	 my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
 1219: 	 my ($type) = split(/_/,$helper->{'VARS'}->{'PRINT_TYPE'});
 1220: 	 my $number_per_page=$helper->{'VARS'}->{'NUMBER_TO_PRINT'};
 1221: 	 if ($number_per_page eq '0' || $number_per_page eq 'all') {
 1222: 	     $number_per_page=$num_todo;
 1223: 	 }
 1224: 	 my $flag_latex_header_remove = 'NO'; 
 1225: 	 my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Print Status','Class Print Status',$num_todo,'inline','75');
 1226: 	 my $count=0;
 1227: 	 foreach my $code (sort(@allcodes)) {
 1228: 	     my $file_num=int($count/$number_per_page);
 1229: 	     $moreenv{'CODE'}=&num_to_letters($code);
 1230: 	     my ($output,$fullname)=
 1231: 		 &print_resources($r,$helper,'anonymous',$type,\%moreenv,
 1232: 				  \@master_seq,$flag_latex_header_remove);
 1233: 	     $print_array[$file_num].=$output;
 1234: 	     &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
 1235: 				       &mt('last assignment').' '.$fullname);
 1236: 	     $flag_latex_header_remove = 'YES';
 1237: 	     $count++;
 1238: 	     if (&Apache::loncommon::connection_aborted($r)) { last; }
 1239: 	 }
 1240: 	 &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
 1241: 	 $result .= $print_array[0].'  \end{document}';
 1242:      } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_from_directory') {      
 1243:     #prints selected problems from the subdirectory 
 1244: 	$selectionmade = 6;
 1245:         my @list_of_files=split /\|\|\|/, $helper->{'VARS'}->{'FILES'};
 1246: 	@list_of_files=sort @list_of_files;
 1247: 	my $flag_latex_header_remove = 'NO'; 
 1248: 	my $rndseed=time;
 1249: 	if ($helper->{'VARS'}->{'curseed'}) {
 1250: 	    $rndseed=$helper->{'VARS'}->{'curseed'};
 1251: 	}
 1252: 	for (my $i=0;$i<=$#list_of_files;$i++) {
 1253: 	    my $urlp = $list_of_files[$i];
 1254: 	    $urlp=~s|//|/|;
 1255: 	    if ($urlp=~/\//) {
 1256: 		my %form;
 1257: 		$form{'problem_split'}=$parmhash{'problem_stream_switch'};
 1258: 		$form{'grade_target'}='tex';
 1259: 		$form{'textwidth'}=&get_textwidth($helper,$LaTeXwidth);
 1260: 		$form{'rndseed'}=$rndseed;
 1261: 		if ($urlp =~ m|/home/([^/]+)/public_html|) {
 1262: 		    $urlp =~ s|/home/([^/]*)/public_html|/~$1|;
 1263: 		} else {
 1264: 		    $urlp =~ s|^$Apache::lonnet::perlvar{'lonDocRoot'}||;
 1265: 		}
 1266: 		my $texversion=&Apache::lonnet::ssi($urlp,%form);
 1267: 		if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 1268: 		   ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 1269: 		    my %form;
 1270: 		    $form{'grade_target'}='answer';
 1271: 		    $form{'answer_output_mode'}='tex';
 1272: 		    $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 1273: 		    $form{'rndseed'}=$rndseed;
 1274: 		    my $answer=&Apache::lonnet::ssi($urlp,%form);
 1275: 		    if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 1276: 			$texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
 1277: 		    } else {
 1278: 			$texversion=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 1279: 			if ($helper->{'VARS'}->{'construction'} ne '1') {
 1280: 			    $texversion.='\vskip 0 mm \noindent ';
 1281: 			    $texversion.=&path_to_problem ($urlp,$LaTeXwidth);
 1282: 			} else {
 1283: 			    $texversion.='\vskip 0 mm \noindent\textbf{Prints from construction space - there is no title.}\vskip 0 mm ';
 1284: 			    my $URLpath=$urlp;
 1285: 			    $URLpath=~s/~([^\/]+)/public_html\/$1\/$1/;
 1286: 			    $texversion.=&path_to_problem ($URLpath,$LaTeXwidth);
 1287: 			}
 1288: 			$texversion.='\vskip 1 mm '.$answer.'\end{document}';
 1289: 		    }
 1290: 		}
 1291:                 #this chunck is responsible for printing the path to problem
 1292: 		my $newurlp=$urlp;
 1293: 		if ($newurlp=~/~/) {$newurlp=~s|\/~([^\/]+)\/|\/home\/$1\/public_html\/|;}
 1294: 		$newurlp=&path_to_problem($newurlp,$LaTeXwidth);
 1295: 		$texversion =~ s/(\\begin{minipage}{\\textwidth})/$1 $newurlp/;
 1296: 		if ($flag_latex_header_remove ne 'NO') {
 1297: 		    $texversion = &latex_header_footer_remove($texversion);
 1298: 		} else {
 1299: 		    $texversion =~ s/\\end{document}//;
 1300: 		}
 1301: 		if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
 1302: 		    $texversion=&IndexCreation($texversion,$urlp);
 1303: 		}
 1304: 		if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
 1305: 		    $texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$urlp| \\strut\\\\\\strut /;
 1306: 		    
 1307: 		}
 1308: 		$result .= $texversion;
 1309: 	    }
 1310: 	    $flag_latex_header_remove = 'YES';  
 1311: 	}
 1312: 	if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\typeout)/ RANDOM SEED IS $rndseed $1/;}
 1313: 	$result .= '\end{document}';      	
 1314:     }
 1315: #-------------------------------------------------------- corrections for the different page formats
 1316:     $result = &page_format_transformation($papersize,$laystyle,$numberofcolumns,$helper->{'VARS'}->{'PRINT_TYPE'},$result,$helper->{VARS}->{'assignment'},$helper->{'VARS'}->{'TABLE_CONTENTS'},$helper->{'VARS'}->{'TABLE_INDEX'},$selectionmade);
 1317:     $result = &latex_corrections($number_of_columns,$result,$selectionmade);
 1318:     for (my $i=1;$i<=$#print_array;$i++) {$print_array[$i] = &latex_corrections($number_of_columns,$print_array[$i],$selectionmade);}
 1319:     #changes page's parameters for the one column output 
 1320:     if ($numberofcolumns == 1) {
 1321: 	$result =~ s/\\textwidth\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\textwidth= $helper->{'VARS'}->{'pagesize.width'} $helper->{'VARS'}->{'pagesize.widthunit'} /;
 1322: 	$result =~ s/\\textheight\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\textheight $helper->{'VARS'}->{'pagesize.height'} $helper->{'VARS'}->{'pagesize.heightunit'} /;
 1323: 	$result =~ s/\\evensidemargin\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\evensidemargin= $helper->{'VARS'}->{'pagesize.lmargin'} $helper->{'VARS'}->{'pagesize.lmarginunit'} /;
 1324: 	$result =~ s/\\oddsidemargin\s*=\s*-?\d*\.?\d*\s*(cm|mm|in)/\\oddsidemargin= $helper->{'VARS'}->{'pagesize.lmargin'} $helper->{'VARS'}->{'pagesize.lmarginunit'} /;
 1325:     }
 1326: #-- writing .tex file in prtspool 
 1327:     my $temp_file;
 1328:     my $identifier = &Apache::loncommon::get_cgi_id();
 1329:     my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout_".$identifier.".tex";
 1330:     if (!($#print_array>0)) { 
 1331: 	unless ($temp_file = Apache::File->new('>'.$filename)) {
 1332: 	    $r->log_error("Couldn't open $filename for output $!");
 1333: 	    return SERVER_ERROR; 
 1334: 	}
 1335: 	print $temp_file $result;
 1336: 	my $begin=index($result,'\begin{document}',0);
 1337: 	my $inc=substr($result,0,$begin+16);
 1338:     } else {
 1339: 	my $begin=index($result,'\begin{document}',0);
 1340: 	my $inc=substr($result,0,$begin+16);
 1341:         for (my $i=0;$i<=$#print_array;$i++) {
 1342: 	    if ($i==0) {
 1343: 		$print_array[$i]=$result;
 1344: 	    } else {
 1345: 		my $anobegin=index($print_array[$i],'\setcounter{page}',0);
 1346: 		substr($print_array[$i],0,$anobegin)='';
 1347: 		$print_array[$i]=$inc.$print_array[$i].'\end{document}';
 1348: 	    }
 1349: 	    my $temp_file;
 1350: 	    my $newfilename=$filename;
 1351: 	    my $num=$i+1;
 1352: 	    $newfilename =~s/\.tex$/_$num\.tex/; 
 1353: 	    unless ($temp_file = Apache::File->new('>'.$newfilename)) {
 1354: 		$r->log_error("Couldn't open $newfilename for output $!");
 1355: 		return SERVER_ERROR; 
 1356: 	    }
 1357: 	    print $temp_file $print_array[$i];
 1358: 	}
 1359:     }
 1360:     my $student_names='';
 1361:     if ($#print_array>0) {
 1362: 	for (my $i=0;$i<=$#print_array;$i++) {
 1363: 	    $student_names.=$student_names[$i].'_ENDPERSON_';
 1364: 	}
 1365:     } else {
 1366: 	if ($#student_names>-1) {
 1367: 	    $student_names=$student_names[0].'_ENDPERSON_';
 1368: 	} else {
 1369: 	    my $fullname = &get_name($ENV{'user.name'},$ENV{'user.domain'});
 1370: 	    $student_names=join(':',$ENV{'user.name'},$ENV{'user.domain'},
 1371: 				$ENV{'request.course.sec'},$fullname).
 1372: 				    '_ENDPERSON_'.'_END_';
 1373: 	}
 1374:     }
 1375: 
 1376:     my $URLback=''; #link to original document
 1377:     if ($helper->{'VARS'}->{'construction'} ne '1') {
 1378: 	#prints published resource
 1379: 	$URLback=&Apache::lonnet::escape('/adm/flip?postdata=return:');
 1380:     } else {
 1381: 	#prints resource from the construction space
 1382: 	$URLback='/'.$helper->{'VARS'}->{'filename'};
 1383: 	if ($URLback=~/([^?]+)/) {
 1384: 	    $URLback=$1;
 1385: 	    $URLback=~s|^/~|/priv/|;
 1386: 	}
 1387:     }
 1388: 
 1389:     &Apache::lonnet::appenv('cgi.'.$identifier.'.file'   => $filename,
 1390:                             'cgi.'.$identifier.'.layout'  => $laystyle,
 1391:                             'cgi.'.$identifier.'.numcol'  => $numberofcolumns,
 1392: 			    'cgi.'.$identifier.'.paper'  => $papersize,
 1393:                             'cgi.'.$identifier.'.selection' => $selectionmade,
 1394: 			    'cgi.'.$identifier.'tableofcontents' => $helper->{'VARS'}->{'TABLE_CONTENTS'},
 1395: 			    'cgi.'.$identifier.'tableofindex' => $helper->{'VARS'}->{'TABLE_INDEX'},
 1396: 			    'cgi.'.$identifier.'role' => $ENV{'request.role.adv'},
 1397:                             'cgi.'.$identifier.'numberoffiles' => $#print_array,
 1398:                             'cgi.'.$identifier.'studentnames' => $student_names,
 1399:                             'cgi.'.$identifier.'backref' => $URLback,);
 1400:  
 1401: $r->print(<<FINALEND);
 1402: <br />
 1403: <meta http-equiv="Refresh" content="0; url=/cgi-bin/printout.pl?$identifier" />
 1404: <a href="/cgi-bin/printout.pl?$identifier">Continue</a>
 1405: </body>
 1406: </html>
 1407: FINALEND
 1408: }
 1409: 
 1410: sub num_to_letters {
 1411:     my ($num) = @_;
 1412:     my @nums= split('',$num);
 1413:     my @num_to_let=('A'..'Z');
 1414:     my $word;
 1415:     foreach my $digit (@nums) { $word.=$num_to_let[$digit]; }
 1416:     return $word;
 1417: }
 1418: 
 1419: sub get_CODE {
 1420:     my ($all_codes,$num,$seed,$size)=@_;
 1421:     my $max='1'.'0'x$size;
 1422:     my $newcode;
 1423:     while(1) {
 1424: 	$newcode=sprintf("%06d",int(rand($max)));
 1425: 	if (!exists($$all_codes{$newcode})) {
 1426: 	    $$all_codes{$newcode}=1;
 1427: 	    return &num_to_letters($newcode);
 1428: 	}
 1429:     }
 1430: }
 1431: 
 1432: sub print_resources {
 1433:     my ($r,$helper,$person,$type,$moreenv,$master_seq,$remove_latex_header)=@_;
 1434:     my $current_output = ''; 
 1435:     my ($username,$userdomain,$usersection) = split /:/,$person;
 1436:     my $fullname = &get_name($username,$userdomain);
 1437:     my $namepostfix;
 1438:     if ($person =~ 'anon') {
 1439: 	$namepostfix="\\\\Name: ";
 1440: 	$fullname = "CODE - ".$moreenv->{'CODE'};
 1441:     }
 1442:     my %page_breaks;
 1443:     foreach my $break (split /\|\|\|/,$helper->{'VARS'}->{'FINISHPAGE'}) {
 1444: 	$page_breaks{$break} = 1;
 1445:     }
 1446:     my $i           = 0;
 1447:     #goes through all resources, checks if they are available for 
 1448:     #current student, and produces output   
 1449:     &Apache::lonnet::delenv('form.counter');
 1450:     &Apache::lonxml::init_counter();
 1451:     foreach my $curresline (@{$master_seq})  {
 1452: 	if (defined $page_breaks{$curresline}) {
 1453: 	    if($i != 0) {
 1454: 		$current_output.= "\\newpage\n";
 1455: 	    }
 1456: 	}
 1457: 	$i++;
 1458: 	if ( !($type eq 'problems' && 
 1459: 	       ($curresline!~ m/\.(problem|exam|quiz|assess|survey|form|library)$/)) ) {
 1460: 	    my ($map,$id,$res_url) = &Apache::lonnet::decode_symb($curresline);
 1461: 	    if (&Apache::lonnet::allowed('bre',$res_url)) {
 1462: 		if ($res_url=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
 1463: 		    my $rendered = &Apache::loncommon::get_student_view($curresline,$username,$userdomain,$ENV{'request.course.id'},'tex',$moreenv);
 1464: 		    my $lonidsdir=$r->dir_config('lonIDsDir');
 1465: 		    my $envfile=$ENV{'user.environment'};
 1466: 		    $envfile=~/\/([^\/]+)\.id$/;
 1467: 		    $envfile=$1;
 1468: 		    &Apache::lonnet::transfer_profile_to_env($lonidsdir,$envfile);
 1469: 		    my $current_counter=$ENV{'form.counter'};
 1470: 		    if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 1471: 		       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
 1472: 			$moreenv->{'answer_output_mode'}='tex';
 1473: 			$moreenv->{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
 1474: 			my $ansrendered = &Apache::loncommon::get_student_answers($curresline,$username,$userdomain,$ENV{'request.course.id'},%{$moreenv});
 1475: 			&Apache::lonnet::appenv(('form.counter' => $current_counter));
 1476: 			if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 1477: 			    $rendered=~s/(\\keephidden{ENDOFPROBLEM})/$ansrendered$1/;
 1478: 			} else {
 1479: 			    $rendered=&print_latex_header($helper->{'VARS'}->{'LATEX_TYPE'});
 1480: 			    $rendered.='\vskip 0 mm \noindent\textbf{'.&Apache::lonnet::gettitle($curresline).'}\vskip 0 mm ';
 1481: 			    $rendered.=&path_to_problem ($curresline,$LaTeXwidth);
 1482: 			    $rendered.='\vskip 1 mm '.$ansrendered;
 1483: 			}
 1484: 		    }
 1485: 		    if ($remove_latex_header eq 'YES') {
 1486: 			$rendered = &latex_header_footer_remove($rendered);
 1487: 		    } else {
 1488: 			$rendered =~ s/\\end{document}//;
 1489: 		    }
 1490: 		    $current_output .= $rendered;		    
 1491: 		} elsif ($res_url=~/\/(smppg|syllabus|aboutme|bulletinboard)$/) {
 1492: 		    my $rendered = &Apache::loncommon::get_student_view($curresline,$username,$userdomain,$ENV{'request.course.id'},'tex',$moreenv);
 1493: 		    my $lonidsdir=$r->dir_config('lonIDsDir');
 1494: 		    my $envfile=$ENV{'user.environment'};
 1495: 		    $envfile=~/\/([^\/]+)\.id$/;
 1496: 		    $envfile=$1;
 1497: 		    &Apache::lonnet::transfer_profile_to_env($lonidsdir,$envfile);
 1498: 		    my $current_counter=$ENV{'form.counter'};
 1499: 		    if ($remove_latex_header eq 'YES') {
 1500: 			$rendered = &latex_header_footer_remove($rendered);
 1501: 		    } else {
 1502: 			$rendered =~ s/\\end{document}//;
 1503: 		    }
 1504: 		    $current_output .= $rendered.'\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\strut \vskip 0 mm \strut ';
 1505: 		} else {
 1506: 		    my $rendered = &unsupported($res_url,$helper->{'VARS'}->{'LATEX_TYPE'});
 1507: 		    if ($remove_latex_header ne 'NO') {
 1508: 			$rendered = &latex_header_footer_remove($rendered);
 1509: 		    } else {
 1510: 			$rendered =~ s/\\end{document}//;
 1511: 		    }
 1512: 		    $current_output .= $rendered;
 1513: 		}
 1514: 	    }
 1515: 	    $remove_latex_header = 'YES';
 1516: 	}
 1517: 	if (&Apache::loncommon::connection_aborted($r)) { last; }
 1518:     }
 1519:     my $courseidinfo = &get_course();
 1520:     if (defined($courseidinfo)) { $courseidinfo=' - '.$courseidinfo }
 1521:     if ($usersection ne '') {$courseidinfo.=' - Sec. '.$usersection}
 1522:     my $currentassignment=&Apache::lonxml::latex_special_symbols($helper->{VARS}->{'assignment'},'header');
 1523:     if ($current_output=~/\\documentclass/) {
 1524: 	$current_output =~ s/\\begin{document}/\\setlength{\\topmargin}{1cm} \\begin{document}\\noindent\\parbox{\\minipagewidth}{\\noindent\\lhead{\\textit{\\textbf{$fullname}}$courseidinfo \\hfill \\thepage \\\\ \\textit{$currentassignment}$namepostfix}}\\vskip 5 mm /;
 1525:     } else {
 1526: 	my $blankpages = '';
 1527: 	for (my $j=0;$j<$helper->{'VARS'}->{'EMPTY_PAGES'};$j++) {$blankpages.='\clearpage\strut\clearpage';}
 1528: 	$current_output = '\strut\vspace*{-6 mm}\\newline\\noindent\\makebox[\\textwidth/$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;
 1529:     }
 1530:     return ($current_output,$fullname);
 1531: 
 1532: }
 1533: 
 1534: sub handler {
 1535: 
 1536:     my $r = shift;
 1537:     my $helper;
 1538: 
 1539: #    my $loaderror=&Apache::lonnet::overloaderror($r);
 1540: #    if ($loaderror) { return $loaderror; }
 1541: #    $loaderror=
 1542: #       &Apache::lonnet::overloaderror($r,
 1543: #         $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
 1544: #    if ($loaderror) { return $loaderror; }
 1545: 
 1546:     my $result = printHelper($r);
 1547:     if (!ref($result)) {
 1548: 	return $result;
 1549:     }
 1550:     $helper = $result;
 1551:    
 1552: #	my $key; 
 1553: #	foreach $key (keys %{$helper->{'VARS'}}) {
 1554: #	    $r->print(' '.$key.'->'.$helper->{'VARS'}->{$key}.'<-<br />');
 1555: #	}
 1556: #	foreach $key (keys %ENV) {
 1557: #	    $r->print(' '.$key.'->'.$ENV{$key}.'<-<br />');
 1558: #	}
 1559: #	return OK;
 1560: 
 1561:     my %parmhash=&Apache::lonnet::coursedescription($ENV{'request.course.id'});
 1562:  
 1563: #	my $key; 
 1564: #	foreach $key (keys %parmhash) {
 1565: #	    $r->print(' '.$key.'->'.$parmhash{$key}.'<-<br />');
 1566: #	}
 1567: #
 1568: 
 1569: 
 1570: 			 
 1571:     &output_data($r,$helper,\%parmhash);
 1572:     return OK;
 1573: } 
 1574: 
 1575: use Apache::lonhelper;
 1576: 
 1577: sub addMessage {
 1578:     my $text = shift;
 1579:     my $paramHash = Apache::lonhelper::getParamHash();
 1580:     $paramHash->{MESSAGE_TEXT} = $text;
 1581:     Apache::lonhelper::message->new();
 1582: }
 1583: 
 1584: use Data::Dumper;
 1585: 
 1586: sub printHelper {
 1587:     my $r = shift;
 1588: 
 1589:     if ($r->header_only) {
 1590:         if ($ENV{'browser.mathml'}) {
 1591:             &Apache::loncommon::content_type($r,'text/xml');
 1592:         } else {
 1593:             &Apache::loncommon::content_type($r,'text/html');
 1594:         }
 1595:         $r->send_http_header;
 1596:         return OK;
 1597:     }
 1598: 
 1599:     # Send header, nocache
 1600:     if ($ENV{'browser.mathml'}) {
 1601:         &Apache::loncommon::content_type($r,'text/xml');
 1602:     } else {
 1603:         &Apache::loncommon::content_type($r,'text/html');
 1604:     }
 1605:     &Apache::loncommon::no_cache($r);
 1606:     $r->send_http_header;
 1607:     $r->rflush();
 1608: 
 1609:     # Unfortunately, this helper is so complicated we have to
 1610:     # write it by hand
 1611: 
 1612:     Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING});
 1613:     
 1614:     my $helper = Apache::lonhelper::helper->new("Printing Helper");
 1615:     $helper->declareVar('symb');
 1616:     $helper->declareVar('postdata');    
 1617:     $helper->declareVar('curseed'); 
 1618:     $helper->declareVar('probstatus');   
 1619:     $helper->declareVar('filename');
 1620:     $helper->declareVar('construction');
 1621:     $helper->declareVar('assignment');
 1622:     $helper->declareVar('style_file');
 1623:     $helper->declareVar('student_sort');
 1624:     
 1625:     # This will persistently load in the data we want from the
 1626:     # very first screen.
 1627:     # Detect whether we're coming from construction space
 1628:     if ($ENV{'form.postdata'}=~/^(?:http:\/\/[^\/]+\/|\/|)\~([^\/]+)\/(.*)$/) {
 1629:         $helper->{VARS}->{'filename'} = "~$1/$2";
 1630:         $helper->{VARS}->{'construction'} = 1;
 1631:     } else {
 1632:         if ($ENV{'form.postdata'}) {
 1633:             $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($ENV{'form.postdata'});
 1634:         }
 1635:         if ($ENV{'form.symb'}) {
 1636:             $helper->{VARS}->{'symb'} = $ENV{'form.symb'};
 1637:         }
 1638:         if ($ENV{'form.url'}) {
 1639:             $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($helper->{VARS}->{'postdata'});
 1640:         }
 1641:     }
 1642: 
 1643:     if ($ENV{'form.symb'}) {
 1644:         $helper->{VARS}->{'symb'} = $ENV{'form.symb'};
 1645:     }
 1646:     if ($ENV{'form.url'}) {
 1647:         $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($helper->{VARS}->{'postdata'});
 1648: 
 1649:     }
 1650:     $helper->{VARS}->{'symb'}=
 1651: 	&Apache::lonenc::check_encrypt($helper->{VARS}->{'symb'});
 1652:     my ($resourceTitle,$sequenceTitle,$mapTitle) = &details_for_menu($helper);
 1653:     if ($sequenceTitle ne '') {$helper->{VARS}->{'assignment'}=$sequenceTitle;}
 1654: 
 1655:     
 1656:     # Extract map
 1657:     my $symb = $helper->{VARS}->{'symb'};
 1658:     my ($map, $id, $url);
 1659:     my $subdir;
 1660: 
 1661:     # Get the resource name from construction space
 1662:     if ($helper->{VARS}->{'construction'}) {
 1663:         $resourceTitle = substr($helper->{VARS}->{'filename'}, 
 1664:                                 rindex($helper->{VARS}->{'filename'}, '/')+1);
 1665:         $subdir = substr($helper->{VARS}->{'filename'},
 1666:                          0, rindex($helper->{VARS}->{'filename'}, '/') + 1);
 1667:     } else {
 1668:         ($map, $id, $url) = &Apache::lonnet::decode_symb($symb);
 1669:         $helper->{VARS}->{'postdata'} = 
 1670: 	    &Apache::lonenc::check_encrypt(&Apache::lonnet::clutter($url));
 1671: 
 1672:         if (!$resourceTitle) { # if the resource doesn't have a title, use the filename
 1673:             my $postdata = $helper->{VARS}->{'postdata'};
 1674:             $resourceTitle = substr($postdata, rindex($postdata, '/') + 1);
 1675:         }
 1676:         $subdir = &Apache::lonnet::filelocation("", $url);
 1677:     }
 1678:     if (!$helper->{VARS}->{'curseed'} && $ENV{'form.curseed'}) {
 1679: 	$helper->{VARS}->{'curseed'}=$ENV{'form.curseed'};
 1680:     }
 1681:     if (!$helper->{VARS}->{'probstatus'} && $ENV{'form.problemtype'}) {
 1682: 	$helper->{VARS}->{'probstatus'}=$ENV{'form.problemtype'};
 1683:     }
 1684: 
 1685:     my $userCanSeeHidden = Apache::lonnavmaps::advancedUser();
 1686:     my $userPriviledged = ($ENV{'request.role'}=~m/^cc\./ or
 1687: 			   $ENV{'request.role'}=~m/^in\./ or
 1688: 			   $ENV{'request.role'}=~m/^ta\./);
 1689: 
 1690:     Apache::lonhelper::registerHelperTags();
 1691: 
 1692:     # "Delete everything after the last slash."
 1693:     $subdir =~ s|/[^/]+$||;
 1694:     if (not $helper->{VARS}->{'construction'}) {
 1695: 	$subdir=$Apache::lonnet::perlvar{'lonDocRoot'}.'/res/'.$subdir;
 1696:     }
 1697:     # "Remove all duplicate slashes."
 1698:     $subdir =~ s|/+|/|g;
 1699: 
 1700:     # What can be printed is a very dynamic decision based on
 1701:     # lots of factors. So we need to dynamically build this list.
 1702:     # To prevent security leaks, states are only added to the wizard
 1703:     # if they can be reached, which ensures manipulating the form input
 1704:     # won't allow anyone to reach states they shouldn't have permission
 1705:     # to reach.
 1706: 
 1707:     # printChoices is tracking the kind of printing the user can
 1708:     # do, and will be used in a choices construction later.
 1709:     # In the meantime we will be adding states and elements to
 1710:     # the helper by hand.
 1711:     my $printChoices = [];
 1712:     my $paramHash;
 1713: 
 1714:     if ($resourceTitle) {
 1715:         push @{$printChoices}, ["<b><i>$resourceTitle</i></b> (".&mt('what you just saw on the screen').")", 'current_document', 'PAGESIZE'];
 1716:     }
 1717: 
 1718:     # Useful filter strings
 1719:     my $isProblem = '($res->is_problem()||$res->contains_problem) ';
 1720:     $isProblem .= ' && !$res->randomout()' if !$userCanSeeHidden;
 1721:     my $isProblemOrMap = '$res->is_problem() || $res->contains_problem() || $res->is_sequence()';
 1722:     my $isNotMap = '!$res->is_sequence()';
 1723:     $isNotMap .= ' && !$res->randomout()' if !$userCanSeeHidden;
 1724:     my $isMap = '$res->is_map()';
 1725:     my $symbFilter = '$res->shown_symb()';
 1726:     my $urlValue = '$res->link()';
 1727: 
 1728:     $helper->declareVar('SEQUENCE');
 1729: 
 1730:     # Useful for debugging: Dump the help vars
 1731:     #$r->print(Dumper($helper->{VARS}));
 1732:     #$r->print($map);
 1733: 
 1734:     # If we're in a sequence...
 1735:     if (($helper->{'VARS'}->{'construction'} ne '1') &&
 1736: 
 1737: 	$helper->{VARS}->{'postdata'} &&
 1738: 	$helper->{VARS}->{'assignment'}) {
 1739:         # Allow problems from sequence
 1740:         push @{$printChoices}, ["<b>".&mt('Problems')."</b> ".&mt('in')." <b><i>$sequenceTitle</i></b>", 'map_problems', 'CHOOSE_PROBLEMS'];
 1741:         # Allow all resources from sequence
 1742:         push @{$printChoices}, ["<b>".&mt('Resources')."</b> ".&mt('in')." <b><i>$sequenceTitle</i></b>", 'map_problems_pages', 'CHOOSE_PROBLEMS_HTML'];
 1743: 
 1744:         my $helperFragment = <<HELPERFRAGMENT;
 1745:   <state name="CHOOSE_PROBLEMS" title="Select Problem(s) to print">
 1746:     <message>(mark them then click "next" button) <br /></message>
 1747:     <resource variable="RESOURCES" multichoice="1" toponly='1' addstatus="1"
 1748:               closeallpages="1">
 1749:       <nextstate>PAGESIZE</nextstate>
 1750:       <filterfunc>return $isProblem;</filterfunc>
 1751:       <mapurl>$map</mapurl>
 1752:       <valuefunc>return $symbFilter;</valuefunc>
 1753:       <option text='Newpage' variable='FINISHPAGE' />
 1754:       </resource>
 1755:     </state>
 1756: 
 1757:   <state name="CHOOSE_PROBLEMS_HTML" title="Select Resource(s) to print">
 1758:     <message>(mark them then click "next" button) <br /></message>
 1759:     <resource variable="RESOURCES" multichoice="1" toponly='1' addstatus="1"
 1760:               closeallpages="1">
 1761:       <nextstate>PAGESIZE</nextstate>
 1762:       <filterfunc>return $isNotMap;</filterfunc>
 1763:       <mapurl>$map</mapurl>
 1764:       <valuefunc>return $symbFilter;</valuefunc>
 1765:       <option text='Newpage' variable='FINISHPAGE' />
 1766:       </resource>
 1767:     </state>
 1768: HELPERFRAGMENT
 1769: 
 1770: 	&Apache::lonxml::xmlparse($r, 'helper', $helperFragment);
 1771:     }
 1772: 
 1773:     # If the user is privileged, allow them to print all 
 1774:     # problems and resources  in the entier course, optionally for selected students
 1775:     if ($userPriviledged && 
 1776:         ($helper->{VARS}->{'postdata'}=~/\/res\// || $helper->{VARS}->{'postdata'}=~/\/(syllabus|smppg|aboutme|bulletinboard)$/)) { 
 1777: 
 1778:         push @{$printChoices}, ['<b>Problems</b> from <b>entire course</b>', 'all_problems', 'ALL_PROBLEMS'];
 1779: 	push @{$printChoices}, ['<b>Resources</b> from <b>entire course</b>', 'all_resources', 'ALL_RESOURCES'];
 1780:          &Apache::lonxml::xmlparse($r, 'helper', <<ALL_PROBLEMS);
 1781:   <state name="ALL_PROBLEMS" title="Select Problem(s) to print">
 1782:     <message>(mark them then click "next" button) <br /></message>
 1783:     <resource variable="RESOURCES" toponly='0' multichoice="1"
 1784: 	suppressEmptySequences='0' addstatus="1" closeallpages="1">
 1785:       <nextstate>PAGESIZE</nextstate>
 1786:       <filterfunc>return $isProblemOrMap;</filterfunc>
 1787:       <choicefunc>return $isNotMap;</choicefunc>
 1788:       <valuefunc>return $symbFilter;</valuefunc>
 1789:       <option text='Newpage' variable='FINISHPAGE' />
 1790:     </resource>
 1791:   </state>
 1792:   <state name="ALL_RESOURCES" title="Select Resource(s) to print">
 1793:     <message>(Mark them then click "next" button) <br /> </message>
 1794:     <resource variable="RESOURCES" toponly='0' multichoice='1'
 1795:               suppressEmptySequences='0' addstatus='1' closeallpages='1'>
 1796:       <nextstate>PAGESIZE</nextstate>
 1797:       <filterfunc>return $isNotMap; </filterfunc>
 1798:       <mapurl> $map</mapursl>
 1799:       <valuefunc>return $symbFilter;</valuefunc>
 1800:       <option text='NewPage' variable='FINISHPAGE' />
 1801:     </resource>
 1802:   </state>
 1803: ALL_PROBLEMS
 1804: 
 1805: 	if ($helper->{VARS}->{'assignment'}) {
 1806: 	    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'];
 1807: 	    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'];
 1808: 	}
 1809: 	my $resource_selector=<<RESOURCE_SELECTOR;
 1810:    <message><br /><big><i><b>Select resources for the assignment</b></i></big><br /></message>
 1811:     <resource variable="RESOURCES" multichoice="1" addstatus="1" 
 1812:               closeallpages="1">
 1813:       <filterfunc>return $isProblem;</filterfunc>
 1814:       <mapurl>$map</mapurl>
 1815:       <valuefunc>return $symbFilter;</valuefunc>
 1816:       <option text='New Page' variable='FINISHPAGE' />
 1817:       </resource>
 1818:     <message><br /><big><i><b>How should the results be printed?</b></i></big><br /></message>
 1819:     <choices variable="EMPTY_PAGES">
 1820:       <choice computer='0'>Start each student\'s assignment on a new page/column (add a pagefeed after each assignment)</choice>
 1821:       <choice computer='1'>Add one empty page/column after each student\'s assignment</choice>
 1822:       <choice computer='2'>Add two empty pages/column after each student\'s assignment</choice>
 1823:       <choice computer='3'>Add three empty pages/column after each student\'s assignment</choice>
 1824:     </choices>
 1825:     <message><hr width='33%' /><b>Number of assignments printed at the same time: </b></message>
 1826:     <string variable="NUMBER_TO_PRINT" maxlength="5" size="5"><defaultvalue>"all"</defaultvalue></string>
 1827: RESOURCE_SELECTOR
 1828: 
 1829:         &Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_STUDENTS);
 1830:   <state name="CHOOSE_STUDENTS" title="Select Students and Resources">
 1831:       <student multichoice='1' variable="STUDENTS" nextstate="PAGESIZE" />
 1832:       <message><b>Select sort order</b> </message>
 1833:     <choices variable='student_sort'>
 1834:       <choice computer='0'>Sort by section then student</choice>
 1835:       <choice computer='1'>Sort by students across sections.</choice>
 1836:     </choices>
 1837:     $resource_selector
 1838:   </state>
 1839: CHOOSE_STUDENTS
 1840: 
 1841: 	my $cdom = $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
 1842: 	my $cnum = $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
 1843:         my @names=&Apache::lonnet::getkeys('CODEs',$cdom,$cnum);
 1844: 	my $namechoice='<choice></choice>';
 1845: 	foreach my $name (sort {uc($a) cmp uc($b)} @names) {
 1846: 	    if ($name =~ /^error: 2 /) { next; }
 1847: 	    $namechoice.='<choice computer="'.$name.'">'.$name.'</choice>';
 1848: 	}
 1849:         &Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_ANON1);
 1850:   <state name="CHOOSE_ANON1" title="Select Students and Resources">
 1851:     <nextstate>PAGESIZE</nextstate>
 1852:     <message><hr width='33%' /><b>Number of anonymous assignments to print?</b></message>
 1853:     <string variable="NUMBER_TO_PRINT_TOTAL" maxlength="5" size="5"></string>
 1854:     <message><br /><b>Names to store the CODEs under for later:</b></message>
 1855:     <string variable="ANON_CODE_STORAGE_NAME" maxlength="50" size="20" />
 1856:     <message><hr width='33%' /></message>
 1857:     <message><b>Reprint a set of saved CODEs:</b></message>
 1858:     <dropdown variable="REUSE_OLD_CODES">
 1859:         $namechoice
 1860:     </dropdown>
 1861:     <message><hr width='33%' /></message>
 1862:     $resource_selector
 1863:   </state>
 1864: CHOOSE_ANON1
 1865: 
 1866: 
 1867: 	if ($helper->{VARS}->{'assignment'}) {
 1868: 	    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'];
 1869: 	    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'];
 1870: 	}
 1871: 	    
 1872: 
 1873: 	$resource_selector=<<RESOURCE_SELECTOR;
 1874:     <message><br /><big><i><b>Select resources for the assignment</b></i></big><br /></message>
 1875:     <resource variable="RESOURCES" multichoice="1" addstatus="1" 
 1876:               closeallpages="1">
 1877:       <filterfunc>return $isNotMap;</filterfunc>
 1878:       <mapurl>$map</mapurl>
 1879:       <valuefunc>return $symbFilter;</valuefunc>
 1880:       <option text='Newpage' variable='FINISHPAGE' />
 1881:       </resource>
 1882:     <message><br /><big><i><b>How should the results be printed?</b></i></big><br /></message>
 1883:     <choices variable="EMPTY_PAGES">
 1884:       <choice computer='0'>Start each student\'s assignment on a new page/column (add a pagefeed after each assignment)</choice>
 1885:       <choice computer='1'>Add one empty page/column after each student\'s assignment</choice>
 1886:       <choice computer='2'>Add two empty pages/column after each student\'s assignment</choice>
 1887:       <choice computer='3'>Add three empty pages/column after each student\'s assignment</choice>
 1888:     </choices>
 1889:     <message><hr width='33%' /><b>Number of assignments printed at the same time: </b></message>
 1890:     <string variable="NUMBER_TO_PRINT" maxlength="5" size="5"><defaultvalue>"all"</defaultvalue></string>
 1891: RESOURCE_SELECTOR
 1892: 
 1893: 	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_STUDENTS1);
 1894:   <state name="CHOOSE_STUDENTS1" title="Select Students and Resources">
 1895:     <student multichoice='1' variable="STUDENTS" nextstate="PAGESIZE" />
 1896:     <choices variable='student_sort'>
 1897:       <choice computer='0'>Sort by section then student</choice>
 1898:       <choice computer='1'>Sort by students across sections.</choice>
 1899:     </choices>
 1900: 
 1901:     $resource_selector
 1902:     </state>
 1903: CHOOSE_STUDENTS1
 1904: 
 1905: 	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_ANON2);
 1906:   <state name="CHOOSE_ANON2" title="Select Students and Resources">
 1907:     <nextstate>PAGESIZE</nextstate>
 1908:     <message><hr width='33%' /><b>Number of anonymous assignments to print?</b></message>
 1909:     <string variable="NUMBER_TO_PRINT_TOTAL" maxlength="5" size="5"></string>
 1910:     <message><br /><b>Names to store the CODEs under for later:</b></message>
 1911:     <string variable="ANON_CODE_STORAGE_NAME" maxlength="50" size="20" />
 1912:     <message><hr width='33%' /></message>
 1913:     <message><b>Reprint a set of saved CODEs:</b></message>
 1914:     <dropdown variable="REUSE_OLD_CODES">
 1915:         $namechoice
 1916:     </dropdown>
 1917:     <message><hr width='33%' /></message>
 1918:     $resource_selector
 1919:   </state>
 1920: CHOOSE_ANON2
 1921:     }
 1922: 
 1923:     # FIXME: That RE should come from a library somewhere.
 1924:     if ((((&Apache::lonnet::allowed('bre',$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 $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/') {    
 1925:         push @{$printChoices}, ["<b>".&mt('Problems')."</b> ".&mt('from current subdirectory')." <b><i>$subdir</i></b>", 'problems_from_directory', 'CHOOSE_FROM_SUBDIR'];
 1926: 
 1927:         my $f = '$filename';
 1928:         my $xmlfrag = <<CHOOSE_FROM_SUBDIR;
 1929:   <state name="CHOOSE_FROM_SUBDIR" title="Select File(s) from <b><small>$subdir</small></b> to print">
 1930:     <message>(mark them then click "next" button) <br /></message>
 1931:     <files variable="FILES" multichoice='1'>
 1932:       <nextstate>PAGESIZE</nextstate>
 1933:       <filechoice>return '$subdir';</filechoice>
 1934: CHOOSE_FROM_SUBDIR
 1935:         
 1936:         # this is broken up because I really want interpolation above,
 1937:         # and I really DON'T want it below
 1938:         $xmlfrag .= <<'CHOOSE_FROM_SUBDIR';
 1939:       <filefilter>return Apache::lonhelper::files::not_old_version($filename) &&
 1940: 	  $filename =~ m/\.(problem|exam|quiz|assess|survey|form|library)$/;
 1941:       </filefilter>
 1942:       </files>
 1943:     </state>
 1944: CHOOSE_FROM_SUBDIR
 1945:         &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 1946:     }
 1947: 
 1948:     # Allow the user to select any sequence in the course, feed it to
 1949:     # another resource selector for that sequence
 1950:     if (!$helper->{VARS}->{'construction'}) {
 1951: 	push @$printChoices, ["<b>Resources</b> from <b>selected sequence</b> in course",
 1952: 			      'select_sequences', 'CHOOSE_SEQUENCE'];
 1953: 	my $escapedSequenceName = $helper->{VARS}->{'SEQUENCE'};
 1954: 	#Escape apostrophes and backslashes for Perl
 1955: 	$escapedSequenceName =~ s/\\/\\\\/g;
 1956: 	$escapedSequenceName =~ s/'/\\'/g;
 1957: 	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_FROM_ANY_SEQUENCE);
 1958:   <state name="CHOOSE_SEQUENCE" title="Select Sequence To Print From">
 1959:     <message>Select the sequence to print resources from:</message>
 1960:     <resource variable="SEQUENCE">
 1961:       <nextstate>CHOOSE_FROM_ANY_SEQUENCE</nextstate>
 1962:       <filterfunc>return \$res->is_sequence;</filterfunc>
 1963:       <valuefunc>return $urlValue;</valuefunc>
 1964:       <option text='Newpage' variable='FINISHPAGE' />
 1965:       </resource>
 1966:     </state>
 1967:   <state name="CHOOSE_FROM_ANY_SEQUENCE" title="Select Resources To Print">
 1968:     <message>(mark desired resources then click "next" button) <br /></message>
 1969:     <resource variable="RESOURCES" multichoice="1" toponly='1' addstatus="1"
 1970:               closeallpages="1">
 1971:       <nextstate>PAGESIZE</nextstate>
 1972:       <filterfunc>return $isProblem</filterfunc>
 1973:       <mapurl evaluate='1'>return '$escapedSequenceName';</mapurl>
 1974:       <valuefunc>return $symbFilter;</valuefunc>
 1975:       <option text='Newpage' variable='FINISHPAGE' />
 1976:       </resource>
 1977:     </state>
 1978: CHOOSE_FROM_ANY_SEQUENCE
 1979: }
 1980: 
 1981:     # Generate the first state, to select which resources get printed.
 1982:     Apache::lonhelper::state->new("START", "Select Printing Options:");
 1983:     $paramHash = Apache::lonhelper::getParamHash();
 1984:     $paramHash->{MESSAGE_TEXT} = "";
 1985:     Apache::lonhelper::message->new();
 1986:     $paramHash = Apache::lonhelper::getParamHash();
 1987:     $paramHash->{'variable'} = 'PRINT_TYPE';
 1988:     $helper->declareVar('PRINT_TYPE');
 1989:     $paramHash->{CHOICES} = $printChoices;
 1990:     Apache::lonhelper::choices->new();
 1991: 
 1992:     my $startedTable = 0; # have we started an HTML table yet? (need
 1993:                           # to close it later)
 1994: 
 1995:     if (($ENV{'request.role.adv'} and &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) or 
 1996: 	($helper->{VARS}->{'construction'} eq '1')) {
 1997: 	addMessage("<hr width='33%' /><table><tr><td align='right'>Print: </td><td>");
 1998:         $paramHash = Apache::lonhelper::getParamHash();
 1999: 	$paramHash->{'variable'} = 'ANSWER_TYPE';   
 2000: 	$helper->declareVar('ANSWER_TYPE');         
 2001:         $paramHash->{CHOICES} = [
 2002:                                    ['Without Answers', 'yes'],
 2003:                                    ['With Answers', 'no'],
 2004:                                    ['Only Answers', 'only'],
 2005:                                    ['As Exam Problem', 'exam']
 2006:                                 ];
 2007:         Apache::lonhelper::dropdown->new();
 2008: 	addMessage("</td></tr>");
 2009: 	$startedTable = 1;
 2010:     }
 2011: 
 2012:     if ($ENV{'request.role.adv'}) {
 2013: 	if (!$startedTable) {
 2014: 	    addMessage("<hr width='33%' /><table><tr><td align='right'>LaTeX mode: </td><td>");
 2015: 	    $startedTable = 1;
 2016: 	} else {
 2017: 	    addMessage("<tr><td align='right'>LaTeX mode: </td><td>");
 2018: 	}
 2019:         $paramHash = Apache::lonhelper::getParamHash();
 2020: 	$paramHash->{'variable'} = 'LATEX_TYPE';   
 2021: 	$helper->declareVar('LATEX_TYPE');  
 2022: 	if ($helper->{VARS}->{'construction'} eq '1') {       
 2023: 	    $paramHash->{CHOICES} = [
 2024: 				     ['standard LaTeX mode', 'standard'], 
 2025: 				     ['LaTeX batchmode', 'batchmode'], ];
 2026: 	} else {
 2027: 	    $paramHash->{CHOICES} = [
 2028: 				     ['LaTeX batchmode', 'batchmode'],
 2029: 				     ['standard LaTeX mode', 'standard'] ];
 2030: 	}
 2031:         Apache::lonhelper::dropdown->new();
 2032:  
 2033: 	addMessage("</td></tr><tr><td align='right'>Print Table of Contents: </td><td>");
 2034:         $paramHash = Apache::lonhelper::getParamHash();
 2035: 	$paramHash->{'variable'} = 'TABLE_CONTENTS';   
 2036: 	$helper->declareVar('TABLE_CONTENTS');         
 2037:         $paramHash->{CHOICES} = [
 2038:                                    ['No', 'no'],
 2039:                                    ['Yes', 'yes'] ];
 2040:         Apache::lonhelper::dropdown->new();
 2041: 	addMessage("</td></tr>");
 2042:         
 2043: 	if (not $helper->{VARS}->{'construction'}) {
 2044: 	    addMessage("<tr><td align='right'>Print Index: </td><td>");
 2045: 	    $paramHash = Apache::lonhelper::getParamHash();
 2046: 	    $paramHash->{'variable'} = 'TABLE_INDEX';   
 2047: 	    $helper->declareVar('TABLE_INDEX');         
 2048: 	    $paramHash->{CHOICES} = [
 2049: 				     ['No', 'no'],
 2050: 				     ['Yes', 'yes'] ];
 2051: 	    Apache::lonhelper::dropdown->new();
 2052: 	    addMessage("</td></tr>");
 2053: 	    addMessage("<tr><td align='right'>Print Discussions: </td><td>");
 2054: 	    $paramHash = Apache::lonhelper::getParamHash();
 2055: 	    $paramHash->{'variable'} = 'PRINT_DISCUSSIONS';   
 2056: 	    $helper->declareVar('PRINT_DISCUSSIONS');         
 2057: 	    $paramHash->{CHOICES} = [
 2058: 				     ['No', 'no'],
 2059: 				     ['Yes', 'yes'] ];
 2060: 	    Apache::lonhelper::dropdown->new();
 2061: 	    addMessage("</td></tr>");
 2062: 	}
 2063: 
 2064: 	if ($helper->{'VARS'}->{'construction'}) { 
 2065: 	    my $stylevalue=$ENV{'construct.style'};
 2066: 	    my $xmlfrag .= <<"RNDSEED";
 2067: 	    <message><tr><td align='right'>Use random seed:  </td><td></message>
 2068: 	    <string variable="curseed" size="15" maxlength="15">
 2069: 		<defaultvalue>
 2070: 	            return $helper->{VARS}->{'curseed'};
 2071: 	        </defaultvalue>
 2072: 	    </string>
 2073: 	     <message></td></tr><tr><td align="right">Use style file:</td><td></message>
 2074:              <message><input type="text" size="40" name="style_file_value" value="$stylevalue"  />&nbsp; <a href="javascript:openbrowser('helpform','style_file','sty')">Select style file</a> </td><td></message>
 2075:              <message></td></tr></message>
 2076: RNDSEED
 2077:             &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 2078: 	    $helper->{'VARS'}->{'style_file'}=$ENV{'form.style_file_value'};
 2079: 	}
 2080:     }
 2081: 
 2082: 
 2083: 
 2084: 
 2085:     if ($startedTable) {
 2086: 	addMessage("</table>");
 2087:     }
 2088: 
 2089:     Apache::lonprintout::page_format_state->new("FORMAT");
 2090: 
 2091:     # Generate the PAGESIZE state which will offer the user the margin
 2092:     # choices if they select one column
 2093:     Apache::lonhelper::state->new("PAGESIZE", "Set Margins");
 2094:     Apache::lonprintout::page_size_state->new('pagesize', 'FORMAT', 'FINAL');
 2095: 
 2096: 
 2097:     $helper->process();
 2098: 
 2099:     # MANUAL BAILOUT CONDITION:
 2100:     # If we're in the "final" state, bailout and return to handler
 2101:     if ($helper->{STATE} eq 'FINAL') {
 2102:         return $helper;
 2103:     }    
 2104: 
 2105:     $r->print($helper->display());
 2106: 
 2107:     &Apache::lonhelper::unregisterHelperTags();
 2108: 
 2109:     return OK;
 2110: }
 2111: 
 2112: 
 2113: 1;
 2114: 
 2115: package Apache::lonprintout::page_format_state;
 2116: 
 2117: =pod
 2118: 
 2119: =head1 Helper element: page_format_state
 2120: 
 2121: See lonhelper.pm documentation for discussion of the helper framework.
 2122: 
 2123: Apache::lonprintout::page_format_state is an element that gives the 
 2124: user an opportunity to select the page layout they wish to print 
 2125: with: Number of columns, portrait/landscape, and paper size. If you 
 2126: want to change the paper size choices, change the @paperSize array 
 2127: contents in this package.
 2128: 
 2129: page_format_state is always directly invoked in lonprintout.pm, so there
 2130: is no tag interface. You actually pass parameters to the constructor.
 2131: 
 2132: =over 4
 2133: 
 2134: =item * B<new>(varName): varName is where the print information will be stored in the format FIXME.
 2135: 
 2136: =back
 2137: 
 2138: =cut
 2139: 
 2140: use Apache::lonhelper;
 2141: 
 2142: no strict;
 2143: @ISA = ("Apache::lonhelper::element");
 2144: use strict;
 2145: use Apache::lonlocal;
 2146: 
 2147: my $maxColumns = 2;
 2148: my @paperSize = ("letter [8 1/2x11 in]", "legal [8 1/2x14 in]", 
 2149:                  "tabloid (ledger) [11x17 in]", "executive [7 1/2x10 in]",
 2150:                  "a2 [420x594 mm]", "a3 [297x420 mm]", "a4 [210x297 mm]", 
 2151:                  "a5 [148x210 mm]", "a6 [105x148 mm]" );
 2152: 
 2153: # Tentative format: Orientation (L = Landscape, P = portrait) | Colnum |
 2154: #                   Paper type
 2155: 
 2156: sub new { 
 2157:     my $self = Apache::lonhelper::element->new();
 2158: 
 2159:     shift;
 2160: 
 2161:     $self->{'variable'} = shift;
 2162:     my $helper = Apache::lonhelper::getHelper();
 2163:     $helper->declareVar($self->{'variable'});
 2164:     bless($self);
 2165:     return $self;
 2166: }
 2167: 
 2168: sub render {
 2169:     my $self = shift;
 2170:     my $helper = Apache::lonhelper::getHelper();
 2171:     my $result = '';
 2172:     my $var = $self->{'variable'};
 2173:     my $PageLayout=&mt('Page layout');
 2174:     my $NumberOfColumns=&mt('Number of columns');
 2175:     my $PaperType=&mt('Paper type');
 2176:     $result .= <<STATEHTML;
 2177: 
 2178: <hr width="33%" />
 2179: <table cellpadding="3">
 2180:   <tr>
 2181:     <td align="center"><b>$PageLayout</b></td>
 2182:     <td align="center"><b>$NumberOfColumns</b></td>
 2183:     <td align="center"><b>$PaperType</b></td>
 2184:   </tr>
 2185:   <tr>
 2186:     <td>
 2187:       <input type="radio" name="${var}.layout" value="L" /> Landscape<br />
 2188:       <input type="radio" name="${var}.layout" value="P" checked='1'  /> Portrait
 2189:     </td>
 2190:     <td align="center">
 2191:       <select name="${var}.cols">
 2192: STATEHTML
 2193: 
 2194:     my $i;
 2195:     for ($i = 1; $i <= $maxColumns; $i++) {
 2196:         if ($i == 2) {
 2197:             $result .= "<option value='$i' selected>$i</option>\n";
 2198:         } else {
 2199:             $result .= "<option value='$i'>$i</option>\n";
 2200:         }
 2201:     }
 2202: 
 2203:     $result .= "</select></td><td>\n";
 2204:     $result .= "<select name='${var}.paper'>\n";
 2205: 
 2206:     my %parmhash=&Apache::lonnet::coursedescription($ENV{'request.course.id'});
 2207:     my $DefaultPaperSize=$parmhash{'default_paper_size'};
 2208:     if ($DefaultPaperSize eq '') {$DefaultPaperSize='letter';}
 2209:     $i = 0;
 2210:     foreach (@paperSize) {
 2211: 	$_=~/(\w+)/;
 2212: 	my $papersize=$1;
 2213:         if ($paperSize[$i]=~/$DefaultPaperSize/) {
 2214:             $result .= "<option selected value='$papersize'>" . $paperSize[$i] . "</option>\n";
 2215:         } else {
 2216:             $result .= "<option value='$papersize'>" . $paperSize[$i] . "</option>\n";
 2217:         }
 2218:         $i++;
 2219:     }
 2220:     $result .= "</select></td></tr></table>";
 2221:     return $result;
 2222: }
 2223: 
 2224: sub postprocess {
 2225:     my $self = shift;
 2226: 
 2227:     my $var = $self->{'variable'};
 2228:     my $helper = Apache::lonhelper->getHelper();
 2229:     $helper->{VARS}->{$var} = 
 2230:         $ENV{"form.$var.layout"} . '|' . $ENV{"form.$var.cols"} . '|' .
 2231:         $ENV{"form.$var.paper"};
 2232:     return 1;
 2233: }
 2234: 
 2235: 1;
 2236: 
 2237: package Apache::lonprintout::page_size_state;
 2238: 
 2239: =pod
 2240: 
 2241: =head1 Helper element: page_size_state
 2242: 
 2243: See lonhelper.pm documentation for discussion of the helper framework.
 2244: 
 2245: Apache::lonprintout::page_size_state is an element that gives the 
 2246: user the opportunity to further refine the page settings if they
 2247: select a single-column page.
 2248: 
 2249: page_size_state is always directly invoked in lonprintout.pm, so there
 2250: is no tag interface. You actually pass parameters to the constructor.
 2251: 
 2252: =over 4
 2253: 
 2254: =item * B<new>(varName): varName is where the print information will be stored in the format FIXME.
 2255: 
 2256: =back
 2257: 
 2258: =cut
 2259: 
 2260: use Apache::lonhelper;
 2261: 
 2262: no strict;
 2263: @ISA = ("Apache::lonhelper::element");
 2264: use strict;
 2265: 
 2266: 
 2267: 
 2268: sub new { 
 2269:     my $self = Apache::lonhelper::element->new();
 2270: 
 2271:     shift; # disturbs me (probably prevents subclassing) but works (drops
 2272:            # package descriptor)... - Jeremy
 2273: 
 2274:     $self->{'variable'} = shift;
 2275:     my $helper = Apache::lonhelper::getHelper();
 2276:     $helper->declareVar($self->{'variable'});
 2277: 
 2278:     # The variable name of the format element, so we can look into 
 2279:     # $helper->{VARS} to figure out whether the columns are one or two
 2280:     $self->{'formatvar'} = shift;
 2281: 
 2282:     # The state to transition to after selection, or after discovering
 2283:     # the cols are not set to 1
 2284:     $self->{NEXTSTATE} = shift;
 2285:     bless($self);
 2286:     return $self;
 2287: }
 2288: 
 2289: sub render {
 2290:     my $self = shift;
 2291:     my $helper = Apache::lonhelper::getHelper();
 2292:     my $result = '';
 2293:     my $var = $self->{'variable'};
 2294: 
 2295:     if (defined $self->{ERROR_MSG}) {
 2296:         $result .= '<br /><font color="#FF0000">' . $self->{ERROR_MSG} . '</font><br />';
 2297:     }
 2298: 
 2299:     $result .= <<ELEMENTHTML;
 2300: 
 2301: <p>How should the column be formatted?</p>
 2302: 
 2303: <table cellpadding='3'>
 2304:   <tr>
 2305:     <td align='right'><b>Width</b>:</td>
 2306:     <td align='left'><input type='text' name='$var.width' value='18' size='4'></td>
 2307:     <td align='left'>
 2308:       <select name='$var.widthunit'>
 2309:         <option>cm</option><option>in</option>
 2310:       </select>
 2311:     </td>
 2312:   </tr>
 2313:   <tr>
 2314:     <td align='right'><b>Height</b>:</td>
 2315:     <td align='left'><input type='text' name="$var.height" value="25.9" size='4'></td>
 2316:     <td align='left'>
 2317:       <select name='$var.heightunit'>
 2318:         <option>cm</option><option>in</option>
 2319:       </select>
 2320:     </td>
 2321:   </tr>
 2322:   <tr>
 2323:     <td align='right'><b>Left margin</b>:</td>
 2324:     <td align='left'><input type='text' name='$var.lmargin' value='-1.5' size='4'></td>
 2325:     <td align='left'>
 2326:       <select name='$var.lmarginunit'>
 2327:         <option>cm</option><option>in</option>
 2328:       </select>
 2329:     </td>
 2330:   </tr>
 2331: </table>
 2332: 
 2333: <p>Hint: Some instructors like to leave scratch space for the student by
 2334: making the width much smaller than the width of the page.</p>
 2335: 
 2336: ELEMENTHTML
 2337: 
 2338:     return $result;
 2339: }
 2340: 
 2341: # If the user didn't select 1 column, skip this state.
 2342: sub preprocess {
 2343:     my $self = shift;
 2344:     my $helper = Apache::lonhelper::getHelper();
 2345: 
 2346:     my $format = $helper->{VARS}->{$self->{'formatvar'}};
 2347:     if (substr($format, 2, 1) ne '1') {
 2348:         $helper->changeState($self->{NEXTSTATE});
 2349:     }
 2350:    
 2351:     return 1;
 2352: }
 2353: 
 2354: sub postprocess {
 2355:     my $self = shift;
 2356: 
 2357:     my $var = $self->{'variable'};
 2358:     my $helper = Apache::lonhelper->getHelper();
 2359:     my $width = $helper->{VARS}->{$var .'.width'} = $ENV{"form.${var}.width"}; 
 2360:     my $height = $helper->{VARS}->{$var .'.height'} = $ENV{"form.${var}.height"}; 
 2361:     my $lmargin = $helper->{VARS}->{$var .'.lmargin'} = $ENV{"form.${var}.lmargin"}; 
 2362:     $helper->{VARS}->{$var .'.widthunit'} = $ENV{"form.${var}.widthunit"}; 
 2363:     $helper->{VARS}->{$var .'.heightunit'} = $ENV{"form.${var}.heightunit"}; 
 2364:     $helper->{VARS}->{$var .'.lmarginunit'} = $ENV{"form.${var}.lmarginunit"}; 
 2365: 
 2366:     my $error = '';
 2367: 
 2368:     # /^-?[0-9]+(\.[0-9]*)?$/ -> optional minus, at least on digit, followed 
 2369:     # by an optional period, followed by digits, ending the string
 2370: 
 2371:     if ($width !~  /^-?[0-9]+(\.[0-9]*)?$/) {
 2372:         $error .= "Invalid width; please type only a number.<br />\n";
 2373:     }
 2374:     if ($height !~  /^-?[0-9]+(\.[0-9]*)?$/) {
 2375:         $error .= "Invalid height; please type only a number.<br />\n";
 2376:     }
 2377:     if ($lmargin !~  /^-?[0-9]+(\.[0-9]*)?$/) {
 2378:         $error .= "Invalid left margin; please type only a number.<br />\n";
 2379:     }
 2380: 
 2381:     if (!$error) {
 2382:         Apache::lonhelper::getHelper()->changeState($self->{NEXTSTATE});
 2383:         return 1;
 2384:     } else {
 2385:         $self->{ERROR_MSG} = $error;
 2386:         return 0;
 2387:     }
 2388: }
 2389: 
 2390: 
 2391: 
 2392: __END__
 2393: 

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