Annotation of loncom/xml/lonxml.pm, revision 1.524

1.2       sakharuk    1: # The LearningOnline Network with CAPA
1.3       sakharuk    2: # XML Parser Module 
1.2       sakharuk    3: #
1.524   ! www         4: # $Id: lonxml.pm,v 1.523 2011/11/14 00:20:42 raeburn Exp $
1.139     www         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: # Copyright for TtHfunc and TtMfunc by Ian Hutchinson. 
                     29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into 
                     30: # binary executable programs or libraries distributed by the 
                     31: # Michigan State University (the "Licensee"), but any binaries so 
                     32: # distributed are hereby licensed only for use in the context
                     33: # of a program or computational system for which the Licensee is the 
                     34: # primary author or distributor, and which performs substantial 
                     35: # additional tasks beyond the translation of (La)TeX into HTML.
                     36: # The C source of the Code may not be distributed by the Licensee
                     37: # to any other parties under any circumstances.
                     38: #
1.316     albertel   39: 
1.489     jms        40: =pod
                     41: 
                     42: =head1 NAME
                     43: 
                     44: Apache::lonxml
                     45: 
                     46: =head1 SYNOPSIS
                     47: 
                     48: XML Parsing Module
                     49: 
                     50: This is part of the LearningOnline Network with CAPA project
                     51: described at http://www.lon-capa.org.
                     52: 
                     53: 
                     54: =head1 SUBROUTINES
                     55: 
                     56: =cut
                     57: 
                     58: 
1.2       sakharuk   59: 
1.4       albertel   60: package Apache::lonxml; 
1.33      www        61: use vars 
1.410     albertel   62: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount);
1.1       sakharuk   63: use strict;
1.444     albertel   64: use LONCAPA;
1.167     albertel   65: use HTML::LCParser();
1.161     albertel   66: use HTML::TreeBuilder();
                     67: use HTML::Entities();
                     68: use Safe();
                     69: use Safe::Hole();
                     70: use Math::Cephes();
                     71: use Math::Random();
                     72: use Opcode();
1.271     www        73: use POSIX qw(strftime);
1.339     albertel   74: use Time::HiRes qw( gettimeofday tv_interval );
1.393     albertel   75: use Symbol();
1.266     bowersj2   76: 
1.72      albertel   77: sub register {
1.141     albertel   78:   my ($space,@taglist) = @_;
                     79:   foreach my $temptag (@taglist) {
                     80:     push(@{ $Apache::lonxml::alltags{$temptag} },$space);
1.72      albertel   81:   }
                     82: }
                     83: 
1.141     albertel   84: sub deregister {
                     85:   my ($space,@taglist) = @_;
                     86:   foreach my $temptag (@taglist) {
                     87:     my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
                     88:     if ($tempspace eq $space) {
                     89:       pop(@{ $Apache::lonxml::alltags{$temptag} });
                     90:     }
                     91:   }
1.142     albertel   92:   #&printalltags();
1.141     albertel   93: }
                     94: 
1.46      www        95: use Apache::Constants qw(:common);
1.161     albertel   96: use Apache::lontexconvert();
                     97: use Apache::style();
                     98: use Apache::run();
                     99: use Apache::londefdef();
                    100: use Apache::scripttag();
1.285     www       101: use Apache::languagetags();
1.161     albertel  102: use Apache::edit();
1.266     bowersj2  103: use Apache::inputtags();
                    104: use Apache::outputtags();
1.372     albertel  105: use Apache::lonnet;
1.161     albertel  106: use Apache::File();
                    107: use Apache::loncommon();
1.198     www       108: use Apache::lonfeedback();
1.200     www       109: use Apache::lonmsg();
1.217     matthew   110: use Apache::loncacc();
1.431     www       111: use Apache::lonmaxima();
1.494     www       112: use Apache::lonr();
1.280     www       113: use Apache::lonlocal;
1.501     raeburn   114: use Apache::lonhtmlcommon();
1.520     www       115: use Apache::functionplotresponse();
1.79      www       116: 
1.462     foxr      117: #====================================   Main subroutine: xmlparse  
                    118: 
1.72      albertel  119: #debugging control, to turn on debugging modify the correct handler
1.462     foxr      120: 
1.72      albertel  121: $Apache::lonxml::debug=0;
1.206     albertel  122: 
                    123: # keeps count of the number of warnings and errors generated in a parse
                    124: $warningcount=0;
                    125: $errorcount=0;
1.72      albertel  126: 
                    127: #path to the directory containing the file currently being processed
                    128: @pwd=();
                    129: 
                    130: #these two are used for capturing a subset of the output for later processing,
                    131: #don't touch them directly use &startredirection and &endredirection
                    132: @outputstack = ();
                    133: $redirection = 0;
                    134: 
                    135: #controls wheter the <import> tag actually does
                    136: $import = 1;
                    137: @extlinks=();
                    138: 
                    139: # meta mode is a bit weird only some output is to be turned off
                    140: #<output> tag turns metamode off (defined in londefdef.pm)
                    141: $metamode = 0;
                    142: 
                    143: # turns on and of run::evaluate actually derefencing var refs
                    144: $evaluate = 1;
1.7       albertel  145: 
1.74      albertel  146: # data structure for eidt mode, determines what tags can go into what other tags
                    147: %insertlist=();
1.68      www       148: 
1.99      albertel  149: # stores the list of active tag namespaces
1.76      albertel  150: @namespace=();
                    151: 
1.448     albertel  152: # stores all Scrit Vars displays for later showing
                    153: my @script_var_displays=();
                    154: 
1.172     albertel  155: # a pointer the the Apache request object
                    156: $Apache::lonxml::request='';
                    157: 
1.216     sakharuk  158: # a problem number counter, and check on ether it is used
1.237     sakharuk  159: $Apache::lonxml::counter=1;
1.204     albertel  160: $Apache::lonxml::counter_changed=0;
                    161: 
1.462     foxr      162: # Part counter hash.   In analysis mode, the
                    163: # problems can use this to record which parts increment the counter
                    164: # by how much.  The counter subs will maintain this hash via
                    165: # their optional part parameters.  Note that the assumption is that
                    166: # analysis is done in one request and therefore it is not necessary to
                    167: # save this information request-to-request.
                    168: 
                    169: 
                    170: %Apache::lonxml::counters_per_part = ();
                    171: 
1.212     albertel  172: #internal check on whether to look at style defs
                    173: $Apache::lonxml::usestyle=1;
1.260     albertel  174: 
                    175: #locations used to store the parameter string for style substitutions
                    176: $Apache::lonxml::style_values='';
                    177: $Apache::lonxml::style_end_values='';
1.212     albertel  178: 
1.281     albertel  179: #array of ssi calls that need to occur after we are done parsing
                    180: @Apache::lonxml::ssi_info=();
                    181: 
1.282     albertel  182: #should we do the postag variable interpolation
                    183: $Apache::lonxml::post_evaluate=1;
                    184: 
1.295     albertel  185: #a header message to emit in the case of any generated warning or errors
                    186: $Apache::lonxml::warnings_error_header='';
                    187: 
1.396     foxr      188: #  Control whether or not LaTeX symbols should be substituted for their
                    189: #  \ style equivalents...this may be turned off e.g. in an verbatim
                    190: #  environment.
                    191: 
                    192: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
                    193: 
                    194: sub enable_LaTeX_substitutions {
                    195:     $Apache::lonxml::substitute_LaTeX_symbols = 1;
                    196: }
                    197: sub disable_LaTeX_substitutions {
                    198:     $Apache::lonxml::substitute_LaTeX_symbols = 0;
                    199: }
                    200: 
1.68      www       201: sub xmlend {
1.335     sakharuk  202:     my ($target,$parser)=@_;
1.278     www       203:     my $mode='xml';
                    204:     my $status='OPEN';
1.368     albertel  205:     if ($Apache::lonhomework::parsing_a_problem ||
                    206: 	$Apache::lonhomework::parsing_a_task ) {
1.278     www       207: 	$mode='problem';
                    208: 	$status=$Apache::inputtags::status[-1]; 
                    209:     }
1.362     matthew   210:     my $discussion;
1.379     albertel  211:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                    212: 					   ['LONCAPA_INTERNAL_no_discussion']);
1.372     albertel  213:     if (! exists($env{'form.LONCAPA_INTERNAL_no_discussion'}) ||
                    214:         $env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') {
1.362     matthew   215:         $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
                    216:     }
1.334     sakharuk  217:     if ($target eq 'tex') {
1.335     sakharuk  218: 	$discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
1.334     sakharuk  219: 	&Apache::lonxml::newparser($parser,\$discussion,'');
                    220: 	return '';
                    221:     }
1.405     albertel  222: 
1.407     albertel  223:     return $discussion;
1.119     www       224: }
                    225: 
1.48      albertel  226: sub printalltags {
                    227:   my $temp;
                    228:   foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141     albertel  229:     &Apache::lonxml::debug("$temp -- ".
                    230: 		  join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48      albertel  231:   }
                    232: }
1.31      sakharuk  233: 
1.3       sakharuk  234: sub xmlparse {
1.172     albertel  235:  my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96      albertel  236: 
1.172     albertel  237:  &setup_globals($request,$target);
1.232     albertel  238:  &Apache::inputtags::initialize_inputtags();
1.370     albertel  239:  &Apache::bridgetask::initialize_bridgetask();
1.232     albertel  240:  &Apache::outputtags::initialize_outputtags();
                    241:  &Apache::edit::initialize_edit();
1.287     albertel  242:  &Apache::londefdef::initialize_londefdef();
1.244     albertel  243: 
1.178     www       244: #
                    245: # do we have a course style file?
                    246: #
                    247: 
1.372     albertel  248:  if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
1.178     www       249:      my $bodytext=
1.372     albertel  250: 	 $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
1.178     www       251:      if ($bodytext) {
1.337     albertel  252: 	 foreach my $file (split(',',$bodytext)) {
                    253: 	     my $location=&Apache::lonnet::filelocation('',$file);
                    254: 	     my $styletext=&Apache::lonnet::getfile($location);
                    255: 	     if ($styletext ne '-1') {
                    256: 		 %style_for_target = (%style_for_target,
                    257: 				      &Apache::style::styleparser($target,$styletext));
                    258: 	     }
                    259: 	 }
                    260:      }
1.449     albertel  261:  } elsif ($env{'construct.style'}
                    262: 	  && ($env{'request.state'} eq 'construct')) {
1.372     albertel  263:      my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
1.291     sakharuk  264:      my $styletext=&Apache::lonnet::getfile($location);
1.449     albertel  265:      if ($styletext ne '-1') {
                    266: 	 %style_for_target = (%style_for_target,
                    267: 			      &Apache::style::styleparser($target,$styletext));
                    268:      }
1.178     www       269:  }
1.255     sakharuk  270: #&printalltags();
1.16      albertel  271:  my @pars = ();
1.372     albertel  272:  my $pwd=$env{'request.filename'};
1.23      albertel  273:  $pwd =~ s:/[^/]*$::;
                    274:  &newparser(\@pars,\$content_file_string,$pwd);
1.24      sakharuk  275: 
1.3       sakharuk  276:  my $safeeval = new Safe;
1.40      albertel  277:  my $safehole = new Safe::Hole;
1.82      ng        278:  &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3       sakharuk  279: #-------------------- Redefinition of the target in the case of compound target
                    280: 
                    281:  ($target, my @tenta) = split('&&',$target);
                    282: 
1.150     albertel  283:  my @stack = ();
1.3       sakharuk  284:  my @parstack = ();
1.358     albertel  285:  &initdepth();
                    286:  &init_alarm();
1.101     albertel  287:  my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
1.394     albertel  288: 				   $safeeval,\%style_for_target,1);
1.255     sakharuk  289: 
1.425     albertel  290:  if (@stack) {
1.482     bisitz    291:      &warning(&mt('At end of file some tags were still left unclosed:').
                    292: 	      ' <tt>&lt;'.join('&gt;</tt>, <tt>&lt;',reverse(@stack)).
1.425     albertel  293: 	      '&gt;</tt>');
                    294:  }
1.372     albertel  295:  if ($env{'request.uri'}) {
                    296:     &writeallows($env{'request.uri'});
1.125     www       297:  }
1.281     albertel  298:  &do_registered_ssi();
1.204     albertel  299:  if ($Apache::lonxml::counter_changed) { &store_counter() }
1.393     albertel  300: 
                    301:  &clean_safespace($safeeval);
                    302: 
1.448     albertel  303:  if (@script_var_displays) {
                    304:      $finaloutput .= join('',@script_var_displays);
                    305:      undef(@script_var_displays);
                    306:  }
1.469     albertel  307:  &init_state();
1.372     albertel  308:  if ($env{'form.return_only_error_and_warning_counts'}) {
1.473     www       309:      if ($env{'request.filename'}=~/\.(html|htm|xml)$/i) { 
                    310:         my $error=&verify_html($content_file_string);
                    311:         if ($error) { $errorcount++; }
                    312:      }
1.361     www       313:      return "$errorcount:$warningcount";
                    314:  }
1.3       sakharuk  315:  return $finaloutput;
1.106     www       316: }
                    317: 
1.191     albertel  318: sub latex_special_symbols {
1.272     albertel  319:     my ($string,$where)=@_;
1.396     foxr      320:     #
                    321:     #  If e.g. in verbatim mode, then don't substitute.
                    322:     #  but return original string.
                    323:     #
                    324:     if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
                    325: 	return $string;
                    326:     }
1.235     sakharuk  327:     if ($where eq 'header') {
1.414     foxr      328: 	$string =~ s/\\/\$\\backslash\$/g; # \  -> $\backslash$ per LaTex line by line pg  10.
1.311     albertel  329: 	$string =~ s/(\$|%|\{|\})/\\$1/g;
                    330: 	$string=&Apache::lonprintout::character_chart($string);
                    331: 	# any & or # leftover should be safe to just escape
                    332:         $string=~s/([^\\])\&/$1\\\&/g;
                    333:         $string=~s/([^\\])\#/$1\\\#/g;
1.415     foxr      334: 	$string =~ s/_/\\_/g;              # _ -> \_
                    335: 	$string =~ s/\^/\\\^{}/g;          # ^ -> \^{} 
1.229     sakharuk  336:     } else {
1.312     albertel  337: 	$string=~s/\\/\\ensuremath{\\backslash}/g;
1.367     albertel  338: 	$string=~s/\\\%|\%/\\\%/g;
                    339: 	$string=~s/\\{|{/\\{/g;
                    340: 	$string=~s/\\}|}/\\}/g;
1.378     albertel  341: 	$string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
1.367     albertel  342: 	$string=~s/\\\$|\$/\\\$/g;
                    343: 	$string=~s/\\\_|\_/\\\_/g;
1.313     albertel  344:         $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
1.310     sakharuk  345: 	$string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
1.311     albertel  346: 	$string=&Apache::lonprintout::character_chart($string);
                    347: 	# any & or # leftover should be safe to just escape
1.367     albertel  348: 	$string=~s/\\\&|\&/\\\&/g;
                    349: 	$string=~s/\\\#|\#/\\\#/g;
1.332     sakharuk  350:         $string=~s/\|/\$\\mid\$/g;
1.310     sakharuk  351: #single { or } How to escape?
1.229     sakharuk  352:     }
1.272     albertel  353:     return $string;
1.188     sakharuk  354: }
                    355: 
1.101     albertel  356: sub inner_xmlparse {
1.394     albertel  357:   my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
1.101     albertel  358:   my $finaloutput = '';
                    359:   my $result;
                    360:   my $token;
1.258     albertel  361:   my $dontpop=0;
1.389     albertel  362:   my $startredirection = $Apache::lonxml::redirection;
1.101     albertel  363:   while ( $#$pars > -1 ) {
                    364:     while ($token = $$pars['-1']->get_token) {
1.261     albertel  365:       if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101     albertel  366: 	if ($metamode<1) {
1.190     albertel  367: 	    my $text=$token->[1];
1.193     albertel  368: 	    if ($token->[0] eq 'C' && $target eq 'tex') {
1.239     sakharuk  369: 		$text = '';
                    370: #		$text = '%'.$text."\n";
1.182     sakharuk  371: 	    }
1.190     albertel  372: 	    $result.=$text;
1.101     albertel  373: 	}
1.261     albertel  374:       } elsif (($token->[0] eq 'D')) {
                    375: 	if ($metamode<1 && $target eq 'web') {
                    376: 	    my $text=$token->[1];
                    377: 	    $result.=$text;
                    378: 	}
1.101     albertel  379:       } elsif ($token->[0] eq 'PI') {
1.261     albertel  380: 	if ($metamode<1 && $target eq 'web') {
1.101     albertel  381: 	  $result=$token->[2];
                    382: 	}
                    383:       } elsif ($token->[0] eq 'S') {
1.140     albertel  384: 	# add tag to stack
1.101     albertel  385: 	push (@$stack,$token->[1]);
                    386: 	# add parameters list to another stack
                    387: 	push (@$parstack,&parstring($token));
1.140     albertel  388: 	&increasedepth($token);
1.212     albertel  389: 	if ($Apache::lonxml::usestyle &&
                    390: 	    exists($$style_for_target{$token->[1]})) {
                    391: 	    $Apache::lonxml::usestyle=0;
                    392: 	    my $string=$$style_for_target{$token->[1]}.
                    393: 	      '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
                    394: 	    &Apache::lonxml::newparser($pars,\$string);
1.257     albertel  395: 	    $Apache::lonxml::style_values=$$parstack[-1];
1.259     albertel  396: 	    $Apache::lonxml::style_end_values=$$parstack[-1];
1.101     albertel  397: 	} else {
                    398: 	  $result = &callsub("start_$token->[1]", $target, $token, $stack,
                    399: 			     $parstack, $pars, $safeeval, $style_for_target);
1.140     albertel  400: 	}
1.101     albertel  401:       } elsif ($token->[0] eq 'E') {
1.212     albertel  402: 	if ($Apache::lonxml::usestyle &&
                    403: 	    exists($$style_for_target{'/'."$token->[1]"})) {
                    404: 	    $Apache::lonxml::usestyle=0;
                    405: 	    my $string=$$style_for_target{'/'.$token->[1]}.
1.258     albertel  406: 	      '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212     albertel  407: 	    &Apache::lonxml::newparser($pars,\$string);
1.259     albertel  408: 	    $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
                    409: 	    $Apache::lonxml::style_end_values='';
1.258     albertel  410: 	    $dontpop=1;
1.101     albertel  411: 	} else {
1.258     albertel  412: 	    #clear out any tags that didn't end
                    413: 	    while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
                    414: 		my $lasttag=$$stack[-1];
1.317     albertel  415: 		if ($token->[1] =~ /^\Q$lasttag\E$/i) {
1.483     bisitz    416: 		    &Apache::lonxml::warning(&mt('Using tag [_1] on line [_2] as end tag to [_3]','&lt;/'.$token->[1].'&gt;','.$token->[3].','&lt;'.$$stack[-1].'&gt;'));
1.258     albertel  417: 		    last;
                    418: 		} else {
1.483     bisitz    419:                     &Apache::lonxml::warning(&mt('Found tag [_1] on line [_2] when looking for [_3] in file.','&lt;/'.$token->[1].'&gt;',$token->[3],'&lt;/'.$$stack[-1].'&gt;'));
1.258     albertel  420: 		    &end_tag($stack,$parstack,$token);
                    421: 		}
                    422: 	    }
                    423: 	    $result = &callsub("end_$token->[1]", $target, $token, $stack,
                    424: 			       $parstack, $pars,$safeeval, $style_for_target);
1.101     albertel  425: 	}
                    426:       } else {
                    427: 	&Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
                    428:       }
                    429:       #evaluate variable refs in result
1.282     albertel  430:       if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257     albertel  431: 	  my $extras;
                    432: 	  if (!$Apache::lonxml::usestyle) {
                    433: 	      $extras=$Apache::lonxml::style_values;
                    434: 	  }
1.488     raeburn   435: 	  if ( $#$parstack > -1 ) {
                    436: 	      $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
                    437: 	  } else {
                    438: 	      $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.487     raeburn   439:           }
1.163     albertel  440:       }
1.282     albertel  441:       $Apache::lonxml::post_evaluate=1;
                    442: 
1.190     albertel  443:       if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249     albertel  444: 	  #Style file definitions should be correct
1.250     albertel  445: 	  if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311     albertel  446: 	      $result=&latex_special_symbols($result);
1.249     albertel  447: 	  }
1.190     albertel  448:       }
                    449: 
1.169     albertel  450:       if ($Apache::lonxml::redirection) {
                    451: 	$Apache::lonxml::outputstack['-1'] .= $result;
                    452:       } else {
                    453: 	$finaloutput.=$result;
                    454:       }
                    455:       $result = '';
                    456: 
1.258     albertel  457:       if ($token->[0] eq 'E' && !$dontpop) {
1.101     albertel  458: 	&end_tag($stack,$parstack,$token);
                    459:       }
1.258     albertel  460:       $dontpop=0;
1.224     albertel  461:     }	
1.212     albertel  462:     if ($#$pars > -1) {
                    463: 	pop @$pars;
                    464: 	pop @Apache::lonxml::pwd;
                    465:     }
1.101     albertel  466:   }
                    467: 
                    468:   # if ($target eq 'meta') {
                    469:   #   $finaloutput.=&endredirection;
                    470:   # }
                    471: 
1.394     albertel  472:   if ( $start && $target eq 'grade') { &endredirection(); }
1.389     albertel  473:   if ( $Apache::lonxml::redirection > $startredirection) {
                    474:       while ($Apache::lonxml::redirection > $startredirection) {
                    475: 	  $finaloutput .= &endredirection();
1.387     albertel  476:       }
                    477:   }
1.101     albertel  478:   if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
                    479:     $finaloutput=&afterburn($finaloutput);
1.509     www       480:   }
                    481:   if ($target eq 'modified') {
                    482: # if modfied, handle startpart and endpart
                    483:      $finaloutput=~s/\<startpartmarker[^\>]*\>(.*)\<endpartmarker[^\>]*\>/<part>$1<\/part>/gs;
1.216     sakharuk  484:   }	    
1.101     albertel  485:   return $finaloutput;
                    486: }
1.67      www       487: 
1.318     matthew   488: ## 
                    489: ## Looks to see if there is a subroutine defined for this tag.  If so, call it,
                    490: ## otherwise do not call it as we do not know what it is.
                    491: ##
1.7       albertel  492: sub callsub {
1.84      albertel  493:   my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7       albertel  494:   my $currentstring='';
1.72      albertel  495:   my $nodefault;
1.7       albertel  496:   {
1.59      albertel  497:     my $sub1;
1.7       albertel  498:     no strict 'refs';
1.68      www       499:     my $tag=$token->[1];
1.236     www       500: # get utterly rid of extended html tags
                    501:     if ($tag=~/^x\-/i) { return ''; }
1.141     albertel  502:     my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68      www       503:     if (!$space) {
1.141     albertel  504:      	$tag=~tr/A-Z/a-z/;
1.68      www       505: 	$sub=~tr/A-Z/a-z/;
1.141     albertel  506: 	$space=$Apache::lonxml::alltags{$tag}[-1]
1.68      www       507:     }
1.97      albertel  508: 
                    509:     my $deleted=0;
                    510:     if (($token->[0] eq 'S') && ($target eq 'modified')) {
                    511:       $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
                    512: 					     $parstack,$parser,$safeeval,
                    513: 					     $style);
                    514:     }
                    515:     if (!$deleted) {
                    516:       if ($space) {
1.220     albertel  517: 	#&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97      albertel  518: 	$sub1="$space\:\:$sub";
                    519: 	($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
                    520: 					     $parstack,$parser,$safeeval,
                    521: 					     $style);
                    522:       } else {
1.318     matthew   523:           if ($target eq 'tex') {
                    524:               # throw away tag name
                    525:               return '';
                    526:           }
1.220     albertel  527: 	#&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97      albertel  528: 	if ($metamode <1) {
                    529: 	  if (defined($token->[4]) && ($metamode < 1)) {
                    530: 	    $currentstring = $token->[4];
                    531: 	  } else {
                    532: 	    $currentstring = $token->[2];
                    533: 	  }
1.62      sakharuk  534: 	}
1.7       albertel  535:       }
1.97      albertel  536:       #    &Apache::lonxml::debug("nodefalt:$nodefault:");
                    537:       if ($currentstring eq '' && $nodefault eq '') {
                    538: 	if ($target eq 'edit') {
1.220     albertel  539: 	  #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97      albertel  540: 	  if ($token->[0] eq 'S') {
                    541: 	    $currentstring = &Apache::edit::tag_start($target,$token);
                    542: 	  } elsif ($token->[0] eq 'E') {
                    543: 	    $currentstring = &Apache::edit::tag_end($target,$token);
                    544: 	  }
1.441     albertel  545: 	}
                    546:       }
                    547:       if ($target eq 'modified' && $nodefault eq '') {
                    548: 	  if ($currentstring eq '') {
                    549: 	      if ($token->[0] eq 'S') {
                    550: 		  $currentstring = $token->[4];
                    551: 	      } elsif ($token->[0] eq 'E') {
                    552: 		  $currentstring = $token->[2];
                    553: 	      } else {
                    554: 		  $currentstring = $token->[2];
                    555: 	      }
                    556: 	  }
1.97      albertel  557: 	  if ($token->[0] eq 'S') {
1.447     albertel  558: 	      $currentstring.=&Apache::edit::handle_insert();
1.210     www       559: 	  } elsif ($token->[0] eq 'E') {
1.447     albertel  560: 	      $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97      albertel  561: 	  }
1.72      albertel  562:       }
1.7       albertel  563:     }
                    564:     use strict 'refs';
                    565:   }
                    566:   return $currentstring;
1.82      ng        567: }
                    568: 
1.465     albertel  569: {
                    570:     my %state;
                    571: 
                    572:     sub init_state {
                    573: 	undef(%state);
                    574:     }
                    575:     
                    576:     sub set_state {
                    577: 	my ($key,$value) = @_;
                    578: 	$state{$key} = $value;
                    579: 	return $value;
                    580:     }
                    581:     sub get_state {
                    582: 	my ($key) = @_;
                    583: 	return $state{$key};
                    584:     }
                    585: }
                    586: 
1.96      albertel  587: sub setup_globals {
1.172     albertel  588:   my ($request,$target)=@_;
                    589:   $Apache::lonxml::request=$request;
1.205     www       590:   $errorcount=0;
                    591:   $warningcount=0;
1.490     www       592:   $Apache::lonxml::internal_error=0;
1.207     albertel  593:   $Apache::lonxml::default_homework_loaded=0;
1.212     albertel  594:   $Apache::lonxml::usestyle=1;
1.204     albertel  595:   &init_counter();
1.462     foxr      596:   &clear_bubble_lines_for_part();
1.465     albertel  597:   &init_state();
1.469     albertel  598:   &set_state('target',$target);
1.101     albertel  599:   @Apache::lonxml::pwd=();
1.124     albertel  600:   @Apache::lonxml::extlinks=();
1.448     albertel  601:   @script_var_displays=();
1.281     albertel  602:   @Apache::lonxml::ssi_info=();
1.282     albertel  603:   $Apache::lonxml::post_evaluate=1;
1.295     albertel  604:   $Apache::lonxml::warnings_error_header='';
1.397     albertel  605:   $Apache::lonxml::substitute_LaTeX_symbols = 1;
1.96      albertel  606:   if ($target eq 'meta') {
                    607:     $Apache::lonxml::redirection = 0;
                    608:     $Apache::lonxml::metamode = 1;
                    609:     $Apache::lonxml::evaluate = 1;
                    610:     $Apache::lonxml::import = 0;
1.129     albertel  611:   } elsif ($target eq 'answer') {
                    612:     $Apache::lonxml::redirection = 0;
                    613:     $Apache::lonxml::metamode = 1;
                    614:     $Apache::lonxml::evaluate = 1;
                    615:     $Apache::lonxml::import = 1;
1.96      albertel  616:   } elsif ($target eq 'grade') {
1.387     albertel  617:     &startredirection(); #ended in inner_xmlparse on exit
1.96      albertel  618:     $Apache::lonxml::metamode = 0;
                    619:     $Apache::lonxml::evaluate = 1;
                    620:     $Apache::lonxml::import = 1;
                    621:   } elsif ($target eq 'modified') {
                    622:     $Apache::lonxml::redirection = 0;
                    623:     $Apache::lonxml::metamode = 0;
                    624:     $Apache::lonxml::evaluate = 0;
                    625:     $Apache::lonxml::import = 0;
                    626:   } elsif ($target eq 'edit') {
                    627:     $Apache::lonxml::redirection = 0;
                    628:     $Apache::lonxml::metamode = 0;
                    629:     $Apache::lonxml::evaluate = 0;
                    630:     $Apache::lonxml::import = 0;
1.163     albertel  631:   } elsif ($target eq 'analyze') {
                    632:     $Apache::lonxml::redirection = 0;
                    633:     $Apache::lonxml::metamode = 0;
                    634:     $Apache::lonxml::evaluate = 1;
                    635:     $Apache::lonxml::import = 1;
1.96      albertel  636:   } else {
                    637:     $Apache::lonxml::redirection = 0;
                    638:     $Apache::lonxml::metamode = 0;
                    639:     $Apache::lonxml::evaluate = 1;
                    640:     $Apache::lonxml::import = 1;
                    641:   }
                    642: }
                    643: 
1.82      ng        644: sub init_safespace {
                    645:   my ($target,$safeeval,$safehole,$safeinit) = @_;
1.511     foxr      646:   $safeeval->reval('use Math::Complex;');
                    647:   $safeeval->reval('use LaTeX::Table;');
1.393     albertel  648:   $safeeval->deny_only(':dangerous');
1.383     albertel  649:   $safeeval->permit_only(":default");
1.82      ng        650:   $safeeval->permit("entereval");
                    651:   $safeeval->permit(":base_math");
                    652:   $safeeval->permit("sort");
1.286     albertel  653:   $safeeval->permit("time");
1.480     www       654:   $safeeval->permit("caller");
1.371     albertel  655:   $safeeval->deny("rand");
                    656:   $safeeval->deny("srand");
1.82      ng        657:   $safeeval->deny(":base_io");
1.102     albertel  658:   $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251     albertel  659:   $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82      ng        660:   $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324     albertel  661:   $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
                    662: 		  '&chem_standard_order');
1.369     albertel  663:   $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
1.471     bisitz    664:   $safehole->wrap(\&Apache::response::implicit_multiplication,$safeeval,'&implicit_multiplication');
1.324     albertel  665: 
1.431     www       666:   $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
1.432     www       667:   $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
1.433     albertel  668:   $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,
                    669: 		  '&maxima_cas_formula_fix');
                    670: 
1.494     www       671:   $safehole->wrap(\&Apache::lonr::r_eval,$safeeval,'&r_eval');
1.497     www       672:   $safehole->wrap(\&Apache::lonr::Rentry,$safeeval,'&Rentry');
                    673:   $safehole->wrap(\&Apache::lonr::Rarray,$safeeval,'&Rarray');
1.494     www       674:   $safehole->wrap(\&Apache::lonr::r_check,$safeeval,'&r_check');
                    675:   $safehole->wrap(\&Apache::lonr::r_cas_formula_fix,$safeeval,
                    676:                   '&r_cas_formula_fix');
                    677:  
1.433     albertel  678:   $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval,
                    679: 		  '&capa_formula_fix');
1.431     www       680: 
1.480     www       681:   $safehole->wrap(\&Apache::lonlocal::locallocaltime,$safeeval,
                    682:                   '&locallocaltime');
                    683: 
1.82      ng        684:   $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
                    685:   $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
                    686:   $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
                    687:   $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
                    688:   $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
                    689:   $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
                    690:   $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
                    691:   $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
                    692:   $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
                    693:   $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
                    694:   $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
                    695:   $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
                    696:   $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
                    697:   $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
                    698:   $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
                    699:   $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
                    700:   $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
                    701:   $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
                    702:   $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215     albertel  703:   
                    704:   $safehole->wrap(\&Math::Cephes::bdtr  ,$safeeval,'&bdtr'  );
                    705:   $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
                    706:   $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
                    707:   $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
                    708:   $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
                    709:   $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
                    710:   $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
                    711:   $safehole->wrap(\&Math::Cephes::fdtr  ,$safeeval,'&fdtr'  );
                    712:   $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
                    713:   $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
                    714:   $safehole->wrap(\&Math::Cephes::gdtr  ,$safeeval,'&gdtr'  );
                    715:   $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
                    716:   $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
                    717:   $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
                    718:   $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
                    719:   $safehole->wrap(\&Math::Cephes::ndtr  ,$safeeval,'&ndtr'  );
                    720:   $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
                    721:   $safehole->wrap(\&Math::Cephes::pdtr  ,$safeeval,'&pdtr'  );
                    722:   $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
                    723:   $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
                    724:   $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
                    725:   $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
                    726: 
1.383     albertel  727:   $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
                    728:   $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
                    729: 		  '&Math::Cephes::Matrix::new');
                    730:   $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
                    731: 		  '&Math::Cephes::Matrix::coef');
                    732:   $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
                    733: 		  '&Math::Cephes::Matrix::clr');
                    734:   $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
                    735: 		  '&Math::Cephes::Matrix::add');
                    736:   $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
                    737: 		  '&Math::Cephes::Matrix::sub');
                    738:   $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
                    739: 		  '&Math::Cephes::Matrix::mul');
                    740:   $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
                    741: 		  '&Math::Cephes::Matrix::div');
                    742:   $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
                    743: 		  '&Math::Cephes::Matrix::inv');
                    744:   $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
                    745: 		  '&Math::Cephes::Matrix::transp');
                    746:   $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
                    747: 		  '&Math::Cephes::Matrix::simq');
                    748:   $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
                    749: 		  '&Math::Cephes::Matrix::mat_to_vec');
                    750:   $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
                    751: 		  '&Math::Cephes::Matrix::vec_to_mat');
                    752:   $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
                    753: 		  '&Math::Cephes::Matrix::check');
                    754:   $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
                    755: 		  '&Math::Cephes::Matrix::check');
                    756: 
1.215     albertel  757: #  $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
                    758: #  $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
                    759: #  $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
                    760: #  $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
                    761: #  $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
                    762: #  $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
                    763: 
1.91      ng        764:   $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
                    765:   $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
                    766:   $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
                    767:   $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
                    768:   $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
                    769:   $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
                    770:   $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
                    771:   $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
                    772:   $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
                    773:   $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
                    774:   $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93      ng        775:   $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91      ng        776:   $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
                    777:   $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
                    778:   $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
                    779:   $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
                    780:   $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
                    781:   $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
                    782:   $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
                    783:   $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
                    784:   $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.458     albertel  785:   $safehole->wrap(\&Apache::loncommon::languages,$safeeval,'&languages');
1.305     albertel  786:   $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311     albertel  787:   $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.420     albertel  788:   $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
                    789:   $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
1.322     albertel  790:   $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.521     www       791:   $safehole->wrap(\&Apache::functionplotresponse::fpr_val,$safeeval,'&fpr_val');
1.520     www       792:   $safehole->wrap(\&Apache::functionplotresponse::fpr_f,$safeeval,'&fpr_f');
                    793:   $safehole->wrap(\&Apache::functionplotresponse::fpr_dfdx,$safeeval,'&fpr_dfdx');
                    794:   $safehole->wrap(\&Apache::functionplotresponse::fpr_d2fdx2,$safeeval,'&fpr_d2fdx2');
1.524   ! www       795:   $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorcoords,$safeeval,'&fpr_vectorcoords');
        !           796:   $safehole->wrap(\&Apache::functionplotresponse::fpr_objectcoords,$safeeval,'&fpr_objectcoords');
        !           797:   $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorlength,$safeeval,'&fpr_vectorlength');
        !           798:   $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorangle,$safeeval,'&fpr_vectorangle');
1.520     www       799: 
1.430     albertel  800: #  use Data::Dumper;
                    801: #  $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
1.82      ng        802: #need to inspect this class of ops
                    803: # $safeeval->deny(":base_orig");
1.331     albertel  804:   $safeeval->permit("require");
1.91      ng        805:   $safeinit .= ';$external::target="'.$target.'";';
1.82      ng        806:   &Apache::run::run($safeinit,$safeeval);
1.373     albertel  807:   &initialize_rndseed($safeeval);
                    808: }
1.303     albertel  809: 
1.393     albertel  810: sub clean_safespace {
                    811:     my ($safeeval) = @_;
                    812:     delete_package_recurse($safeeval->{Root});
                    813: }
                    814: 
                    815: sub delete_package_recurse {
                    816:      my ($package) = @_;
                    817:      my @subp;
                    818:      {
                    819: 	 no strict 'refs';
                    820: 	 while (my ($key,$val) = each(%{*{"$package\::"}})) {
                    821: 	     if (!defined($val)) { next; }
                    822: 	     local (*ENTRY) = $val;
                    823: 	     if (defined *ENTRY{HASH} && $key =~ /::$/ &&
                    824: 		 $key ne "main::" && $key ne "<none>::")
                    825: 	     {
                    826: 		 my ($p) = $package ne "main" ? "$package\::" : "";
                    827: 		 ($p .= $key) =~ s/::$//;
                    828: 		 push(@subp,$p);
                    829: 	     }
                    830: 	 }
                    831:      }
                    832:      foreach my $p (@subp) {
                    833: 	 delete_package_recurse($p);
                    834:      }
                    835:      Symbol::delete_package($package);
                    836: }
                    837: 
1.373     albertel  838: sub initialize_rndseed {
                    839:     my ($safeeval)=@_;
                    840:     my $rndseed;
1.423     albertel  841:     my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.373     albertel  842:     $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
                    843:     my $safeinit = '$external::randomseed="'.$rndseed.'";';
                    844:     &Apache::lonxml::debug("Setting rndseed to $rndseed");
                    845:     &Apache::run::run($safeinit,$safeeval);
1.207     albertel  846: }
                    847: 
                    848: sub default_homework_load {
                    849:     my ($safeeval)=@_;
                    850:     &Apache::lonxml::debug('Loading default_homework');
1.522     raeburn   851:     my $default=&Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonIncludes'}.
                    852:                                          '/default_homework.lcpm');
1.241     albertel  853:     if ($default eq -1) {
1.207     albertel  854: 	&Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
                    855:     } else {
                    856: 	&Apache::run::run($default,$safeeval);
                    857: 	$Apache::lonxml::default_homework_loaded=1;
                    858:     }
1.17      albertel  859: }
                    860: 
1.358     albertel  861: {
                    862:     my $alarm_depth;
                    863:     sub init_alarm {
                    864: 	alarm(0);
                    865: 	$alarm_depth=0;
                    866:     }
                    867: 
                    868:     sub start_alarm {
                    869: 	if ($alarm_depth<1) {
                    870: 	    my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
                    871: 	    if ($old) {
                    872: 		&Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
                    873: 	    }
                    874: 	}
                    875: 	$alarm_depth++;
                    876:     }
                    877: 
                    878:     sub end_alarm {
                    879: 	$alarm_depth--;
                    880: 	if ($alarm_depth<1) { alarm(0); }
                    881:     }
                    882: }
1.328     albertel  883: my $metamode_was;
1.55      albertel  884: sub startredirection {
1.328     albertel  885:     if (!$Apache::lonxml::redirection) {
                    886: 	$metamode_was=$Apache::lonxml::metamode;
                    887:     }
                    888:     $Apache::lonxml::metamode=0;
                    889:     $Apache::lonxml::redirection++;
                    890:     push (@Apache::lonxml::outputstack, '');
1.55      albertel  891: }
                    892: 
                    893: sub endredirection {
1.328     albertel  894:     if (!$Apache::lonxml::redirection) {
1.380     www       895: 	&Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
1.328     albertel  896: 	return '';
                    897:     }
                    898:     $Apache::lonxml::redirection--;
                    899:     if (!$Apache::lonxml::redirection) {
                    900: 	$Apache::lonxml::metamode=$metamode_was;
                    901:     }
                    902:     pop @Apache::lonxml::outputstack;
1.97      albertel  903: }
1.459     albertel  904: sub in_redirection {
                    905:     return ($Apache::lonxml::redirection > 0)
                    906: }
1.97      albertel  907: 
                    908: sub end_tag {
                    909:   my ($tagstack,$parstack,$token)=@_;
                    910:   pop(@$tagstack);
                    911:   pop(@$parstack);
                    912:   &decreasedepth($token);
1.55      albertel  913: }
                    914: 
1.17      albertel  915: sub initdepth {
                    916:   @Apache::lonxml::depthcounter=();
1.439     albertel  917:   undef($Apache::lonxml::last_depth_count);
1.17      albertel  918: }
                    919: 
1.438     albertel  920: 
1.339     albertel  921: my @timers;
                    922: my $lasttime;
1.438     albertel  923: # @Apache::lonxml::depthcounter -> count of tags that exist so
                    924: #                                  far at each level
1.439     albertel  925: # $Apache::lonxml::last_depth_count -> when ascending, need to
                    926: # remember the count for the level below the current level (for
                    927: # example going from 1_2 -> 1 -> 1_3 need to remember the 2 )
1.438     albertel  928: 
1.17      albertel  929: sub increasedepth {
1.19      albertel  930:   my ($token) = @_;
1.439     albertel  931:   push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1);
                    932:   undef($Apache::lonxml::last_depth_count);
1.340     albertel  933:   my $time;
                    934:   if ($Apache::lonxml::debug eq "1") {
                    935:       push(@timers,[&gettimeofday()]);
                    936:       $time=&tv_interval($lasttime);
                    937:       $lasttime=[&gettimeofday()];
                    938:   }
1.439     albertel  939:   my $spacing='  'x($#Apache::lonxml::depthcounter);
1.438     albertel  940:   $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
1.439     albertel  941: #  &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time");
1.54      albertel  942: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17      albertel  943: }
                    944: 
                    945: sub decreasedepth {
1.19      albertel  946:   my ($token) = @_;
1.439     albertel  947:   if (  $#Apache::lonxml::depthcounter == -1) {
                    948:       &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43      albertel  949:   }
1.439     albertel  950:   $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter);
                    951: 
1.340     albertel  952:   my ($timer,$time);
                    953:   if ($Apache::lonxml::debug eq "1") {
                    954:       $timer=pop(@timers);
                    955:       $time=&tv_interval($lasttime);
                    956:       $lasttime=[&gettimeofday()];
                    957:   }
1.439     albertel  958:   my $spacing='  'x($#Apache::lonxml::depthcounter);
                    959:   $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter);
                    960: #  &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer));
1.54      albertel  961: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1       sakharuk  962: }
1.19      albertel  963: 
1.399     albertel  964: sub get_id {
                    965:     my ($parstack,$safeeval)=@_;
                    966:     my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1.449     albertel  967:     if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\d\s[:punct:]])/) {
1.498     bisitz    968: 	&error(&mt('ID [_1] contains invalid characters. IDs are only allowed to contain letters, numbers, spaces and -','"<tt>'.$id.'</tt>"'));
1.399     albertel  969:     }
                    970:     if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
                    971:     return $id;
                    972: }
                    973: 
1.180     albertel  974: sub get_all_text_unbalanced {
1.190     albertel  975: #there is a copy of this in lonpublisher.pm
1.326     albertel  976:     my($tag,$pars)= @_;
                    977:     my $token;
                    978:     my $result='';
                    979:     $tag='<'.$tag.'>';
                    980:     while ($token = $$pars[-1]->get_token) {
                    981: 	if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.386     albertel  982: 	    if ($token->[0] eq 'T' && $token->[2]) {
1.382     albertel  983: 		$result.='<![CDATA['.$token->[1].']]>';
                    984: 	    } else {
                    985: 		$result.=$token->[1];
                    986: 	    }
1.326     albertel  987: 	} elsif ($token->[0] eq 'PI') {
                    988: 	    $result.=$token->[2];
                    989: 	} elsif ($token->[0] eq 'S') {
                    990: 	    $result.=$token->[4];
                    991: 	} elsif ($token->[0] eq 'E')  {
                    992: 	    $result.=$token->[2];
                    993: 	}
                    994: 	if ($result =~ /\Q$tag\E/is) {
                    995: 	    ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
                    996: 	    #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
                    997: 	    #&Apache::lonxml::debug('Result is :'.$1);
                    998: 	    $redo=$tag.$redo;
                    999: 	    &Apache::lonxml::newparser($pars,\$redo);
                   1000: 	    last;
                   1001: 	}
                   1002:     }
                   1003:     return $result
1.462     foxr     1004: 
1.204     albertel 1005: }
                   1006: 
1.462     foxr     1007: #########################################################################
                   1008: #                                                                       #
                   1009: #           bubble line counter management                              #
                   1010: #                                                                       #
                   1011: #########################################################################
                   1012: 
1.447     albertel 1013: =pod
                   1014: 
                   1015: For bubble grading mode and exam bubble printing mode, the tracking of
                   1016: the current 'bubble line number' is stored in the %env element
                   1017: 'form.counter', and is modifed and handled by the following routines.
                   1018: 
                   1019: The value of it is stored in $Apache:lonxml::counter when live and
                   1020: stored back to env after done.
                   1021: 
1.522     raeburn  1022: =item &increment_counter($increment, $part_response);
1.447     albertel 1023: 
                   1024: Increments the internal counter environment variable a specified amount
                   1025: 
                   1026: Optional Arguments:
                   1027:   $increment - amount to increment by (defaults to 1)
1.462     foxr     1028:                Also 1 if the value is negative or zero.
1.467     foxr     1029:   $part_response - A concatenation of the part and response id
                   1030:                    identifying exactly what is being 'answered'.
                   1031: 
1.447     albertel 1032: 
                   1033: =cut
                   1034: 
1.204     albertel 1035: sub increment_counter {
1.467     foxr     1036:     my ($increment, $part_response) = @_;
1.481     raeburn  1037:     if ($env{'form.grade_noincrement'}) { return; }
1.462     foxr     1038:     if (!defined($increment) || $increment le 0) {
                   1039: 	$increment = 1;
                   1040:     }
                   1041:     $Apache::lonxml::counter += $increment;
                   1042: 
1.466     foxr     1043:     # If the caller supplied the response_id parameter, 
1.462     foxr     1044:     # Maintain its counter.. creating if necessary.
                   1045: 
1.470     albertel 1046:     if (defined($part_response)) {
1.467     foxr     1047: 	if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
                   1048: 	    $Apache::lonxml::counters_per_part{$part_response} = 0;
1.462     foxr     1049: 	}
1.467     foxr     1050: 	$Apache::lonxml::counters_per_part{$part_response} += $increment;
                   1051: 	my $new_value = $Apache::lonxml::counters_per_part{$part_response};
1.247     albertel 1052:     }
1.462     foxr     1053: 	
1.289     sakharuk 1054:     $Apache::lonxml::counter_changed=1;
1.204     albertel 1055: }
                   1056: 
1.447     albertel 1057: =pod
                   1058: 
1.461     foxr     1059: =item &init_counter($increment);
1.447     albertel 1060: 
                   1061: Initialize the internal counter environment variable
                   1062: 
                   1063: =cut
                   1064: 
1.204     albertel 1065: sub init_counter {
1.391     albertel 1066:     if ($env{'request.state'} eq 'construct') {
                   1067: 	$Apache::lonxml::counter=1;
                   1068: 	$Apache::lonxml::counter_changed=1;
                   1069:     } elsif (defined($env{'form.counter'})) {
1.372     albertel 1070: 	$Apache::lonxml::counter=$env{'form.counter'};
1.247     albertel 1071: 	$Apache::lonxml::counter_changed=0;
1.237     sakharuk 1072:     } else {
1.204     albertel 1073: 	$Apache::lonxml::counter=1;
1.247     albertel 1074: 	$Apache::lonxml::counter_changed=1;
1.204     albertel 1075:     }
                   1076: }
                   1077: 
                   1078: sub store_counter {
1.474     raeburn  1079:     &Apache::lonnet::appenv({'form.counter' => $Apache::lonxml::counter});
1.401     albertel 1080:     $Apache::lonxml::counter_changed=0;
1.204     albertel 1081:     return '';
1.180     albertel 1082: }
                   1083: 
1.398     albertel 1084: {
                   1085:     my $state;
                   1086:     sub clear_problem_counter {
                   1087: 	undef($state);
                   1088: 	&Apache::lonnet::delenv('form.counter');
                   1089: 	&Apache::lonxml::init_counter();
                   1090: 	&Apache::lonxml::store_counter();
                   1091:     }
                   1092: 
                   1093:     sub remember_problem_counter {
1.422     albertel 1094: 	&Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.398     albertel 1095: 	$state = $env{'form.counter'};
                   1096:     }
                   1097: 
                   1098:     sub restore_problem_counter {
                   1099: 	if (defined($state)) {
1.474     raeburn  1100: 	    &Apache::lonnet::appenv({'form.counter' => $state});
1.398     albertel 1101: 	}
                   1102:     }
1.401     albertel 1103:     sub get_problem_counter {
                   1104: 	if ($Apache::lonxml::counter_changed) { &store_counter() }
1.422     albertel 1105: 	&Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.401     albertel 1106: 	return $env{'form.counter'};
                   1107:     }
1.398     albertel 1108: }
                   1109: 
1.462     foxr     1110: =pod
                   1111: 
1.468     albertel 1112: =item  bubble_lines_for_part(part_response)
1.462     foxr     1113: 
                   1114: Returns the number of lines required to get a response for
1.467     foxr     1115: $part_response (this is just $Apache::lonxml::counters_per_part{$part_response}
1.462     foxr     1116: 
                   1117: =cut
                   1118: 
                   1119: sub bubble_lines_for_part {
1.467     foxr     1120:     my ($part_response) = @_;
1.462     foxr     1121: 
1.467     foxr     1122:     if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1.462     foxr     1123: 	return 0;
                   1124:     } else {
1.467     foxr     1125: 	return $Apache::lonxml::counters_per_part{$part_response};
1.462     foxr     1126:     }
                   1127: }
                   1128: 
                   1129: =pod
                   1130: 
                   1131: =item clear_bubble_lines_for_part
                   1132: 
                   1133: Clears the hash of bubble lines per part.  If a caller
                   1134: needs to analyze several resources this should be called between
                   1135: resources to reset the hash for each problem being analyzed.
                   1136: 
                   1137: =cut
                   1138: 
                   1139: sub clear_bubble_lines_for_part {
                   1140:     undef(%Apache::lonxml::counters_per_part);
                   1141: }
                   1142: 
                   1143: =pod
                   1144: 
1.468     albertel 1145: =item set_bubble_lines(part_response, value)
1.462     foxr     1146: 
                   1147: If there is a problem part, that for whatever reason
                   1148: requires bubble lines that are not
                   1149: the same as the counter increment, it can call this sub during
                   1150: analysis to set its hash value explicitly.
                   1151: 
                   1152: =cut
                   1153: 
                   1154: sub set_bubble_lines {
1.467     foxr     1155:     my ($part_response, $value) = @_;
1.462     foxr     1156: 
1.467     foxr     1157:     $Apache::lonxml::counters_per_part{$part_response} = $value;
1.462     foxr     1158: }
                   1159: 
                   1160: =pod
                   1161: 
                   1162: =item get_bubble_line_hash
                   1163: 
                   1164: Returns the current bubble line hash.  This is assumed to 
                   1165: be small so we return a copy
                   1166: 
                   1167: 
                   1168: =cut
                   1169: 
                   1170: sub get_bubble_line_hash {
                   1171:     return %Apache::lonxml::counters_per_part;
                   1172: }
                   1173: 
                   1174: 
                   1175: #--------------------------------------------------
                   1176: 
1.19      albertel 1177: sub get_all_text {
1.270     albertel 1178:     my($tag,$pars,$style)= @_;
                   1179:     my $gotfullstack=1;
                   1180:     if (ref($pars) ne 'ARRAY') {
                   1181: 	$gotfullstack=0;
                   1182: 	$pars=[$pars];
                   1183:     }
                   1184:     if (ref($style) ne 'HASH') {
                   1185: 	$style={};
                   1186:     }
                   1187:     my $depth=0;
                   1188:     my $token;
                   1189:     my $result='';
                   1190:     if ( $tag =~ m:^/: ) { 
                   1191: 	my $tag=substr($tag,1); 
                   1192: 	#&Apache::lonxml::debug("have:$tag:");
                   1193: 	my $top_empty=0;
                   1194: 	while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
                   1195: 	    while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
                   1196: 		#&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
                   1197: 		if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.382     albertel 1198: 		    if ($token->[2]) {
                   1199: 			$result.='<![CDATA['.$token->[1].']]>';
                   1200: 		    } else {
                   1201: 			$result.=$token->[1];
                   1202: 		    }
1.270     albertel 1203: 		} elsif ($token->[0] eq 'PI') {
                   1204: 		    $result.=$token->[2];
                   1205: 		} elsif ($token->[0] eq 'S') {
1.316     albertel 1206: 		    if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
                   1207: 		    if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
                   1208: 		    if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270     albertel 1209: 		    $result.=$token->[4];
                   1210: 		} elsif ($token->[0] eq 'E')  {
1.316     albertel 1211: 		    if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270     albertel 1212: 		    #skip sending back the last end tag
1.283     albertel 1213: 		    if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270     albertel 1214: 			my $string=
                   1215: 			    '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
                   1216: 				$$style{'/'.$token->[1]}.
                   1217: 				    $token->[2].
                   1218: 					'<LONCAPA_INTERNAL_TURN_STYLE_ON />';
                   1219: 			&Apache::lonxml::newparser($pars,\$string);
                   1220: 			#&Apache::lonxml::debug("reParsing $string");
                   1221: 			next;
                   1222: 		    }
                   1223: 		    if ($depth > -1) {
                   1224: 			$result.=$token->[2];
                   1225: 		    } else {
                   1226: 			$$pars[-1]->unget_token($token);
                   1227: 		    }
                   1228: 		}
                   1229: 	    }
                   1230: 	    if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
                   1231: 	    if (($depth >=0) && ($#$pars > 0) ) {
                   1232: 		pop(@$pars);
                   1233: 		pop(@Apache::lonxml::pwd);
                   1234: 	    }
                   1235: 	}
                   1236: 	if ($top_empty && $depth >= 0) {
                   1237: 	    #never found the end tag ran out of text, throw error send back blank
                   1238: 	    &error('Never found end tag for &lt;'.$tag.
                   1239: 		   '&gt; current string <pre>'.
1.314     albertel 1240: 		   &HTML::Entities::encode($result,'<>&"').
1.270     albertel 1241: 		   '</pre>');
                   1242: 	    if ($gotfullstack) {
                   1243: 		my $newstring='</'.$tag.'>'.$result;
                   1244: 		&Apache::lonxml::newparser($pars,\$newstring);
                   1245: 	    }
                   1246: 	    $result='';
                   1247: 	}
                   1248:     } else {
                   1249: 	while ($#$pars > -1) {
                   1250: 	    while ($token = $$pars[-1]->get_token) {
                   1251: 		#&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
                   1252: 		if (($token->[0] eq 'T')||($token->[0] eq 'C')||
                   1253: 		    ($token->[0] eq 'D')) {
1.382     albertel 1254: 		    if ($token->[2]) {
                   1255: 			$result.='<![CDATA['.$token->[1].']]>';
                   1256: 		    } else {
                   1257: 			$result.=$token->[1];
                   1258: 		    }
1.270     albertel 1259: 		} elsif ($token->[0] eq 'PI') {
                   1260: 		    $result.=$token->[2];
                   1261: 		} elsif ($token->[0] eq 'S') {
1.316     albertel 1262: 		    if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270     albertel 1263: 			$$pars[-1]->unget_token($token); last;
                   1264: 		    } else {
                   1265: 			$result.=$token->[4];
                   1266: 		    }
1.316     albertel 1267: 		    if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
                   1268: 		    if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270     albertel 1269: 		} elsif ($token->[0] eq 'E')  {
                   1270: 		    $result.=$token->[2];
                   1271: 		}
                   1272: 	    }
                   1273: 	    if (($#$pars > 0) ) {
                   1274: 		pop(@$pars);
                   1275: 		pop(@Apache::lonxml::pwd);
                   1276: 	    } else { last; }
                   1277: 	}
                   1278:     }
                   1279:     #&Apache::lonxml::debug("Exit:$result:");
                   1280:     return $result
1.19      albertel 1281: }
                   1282: 
1.23      albertel 1283: sub newparser {
                   1284:   my ($parser,$contentref,$dir) = @_;
1.167     albertel 1285:   push (@$parser,HTML::LCParser->new($contentref));
1.365     albertel 1286:   $$parser[-1]->xml_mode(1);
                   1287:   $$parser[-1]->marked_sections(1);
1.23      albertel 1288:   if ( $dir eq '' ) {
                   1289:     push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
                   1290:   } else {
                   1291:     push (@Apache::lonxml::pwd, $dir);
                   1292:   } 
                   1293: }
1.1       sakharuk 1294: 
1.8       albertel 1295: sub parstring {
1.417     albertel 1296:     my ($token) = @_;
                   1297:     my (@vars,@values);
                   1298:     foreach my $attr (@{$token->[3]}) {
                   1299: 	if ($attr!~/\W/) {
                   1300: 	    my $val=$token->[2]->{$attr};
                   1301: 	    $val =~ s/([\%\@\\\"\'])/\\$1/g;
                   1302: 	    $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
                   1303: 	    $val =~ s/(\$)$/\\$1/;
                   1304: 	    #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
                   1305: 	    push(@vars,"\$$attr");
                   1306: 	    push(@values,"\"$val\"");
                   1307: 	}
                   1308:     }
                   1309:     my $var_init = 
                   1310: 	(@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
                   1311: 	        : '';
                   1312:     return $var_init;
1.8       albertel 1313: }
1.22      albertel 1314: 
1.384     albertel 1315: sub extlink {
                   1316:     my ($res,$exact)=@_;
                   1317:     if (!$exact) {
                   1318: 	$res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
                   1319:     }
                   1320:     push(@Apache::lonxml::extlinks,$res)	 
                   1321: }
                   1322: 
1.34      www      1323: sub writeallows {
1.126     www      1324:     unless ($#extlinks>=0) { return; }
1.377     albertel 1325:     my $thisurl = &Apache::lonnet::clutter(shift);
1.372     albertel 1326:     if ($env{'httpref.'.$thisurl}) {
                   1327: 	$thisurl=$env{'httpref.'.$thisurl};
1.111     www      1328:     }
1.34      www      1329:     my $thisdir=$thisurl;
                   1330:     $thisdir=~s/\/[^\/]+$//;
                   1331:     my %httpref=();
1.142     albertel 1332:     foreach (@extlinks) {
1.34      www      1333:        $httpref{'httpref.'.
1.444     albertel 1334:  	        &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl;
1.142     albertel 1335:     }
1.126     www      1336:     @extlinks=();
1.474     raeburn  1337:     &Apache::lonnet::appenv(\%httpref);
1.34      www      1338: }
                   1339: 
1.281     albertel 1340: sub register_ssi {
                   1341:     my ($url,%form)=@_;
                   1342:     push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
                   1343:     return '';
                   1344: }
                   1345: 
                   1346: sub do_registered_ssi {
                   1347:     foreach my $info (@Apache::lonxml::ssi_info) {
                   1348: 	my %form=%{ $info->{'form'}};
                   1349: 	my $url=$info->{'url'};
                   1350: 	&Apache::lonnet::ssi($url,%form);
                   1351:     }
                   1352: }
1.448     albertel 1353: 
                   1354: sub add_script_result {
                   1355:     my ($display) = @_;
                   1356:     push(@script_var_displays, $display);
                   1357: }
                   1358: 
1.66      www      1359: #
                   1360: # Afterburner handles anchors, highlights and links
                   1361: #
                   1362: sub afterburn {
                   1363:     my $result=shift;
1.154     albertel 1364:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                   1365: 					    ['highlight','anchor','link']);
1.372     albertel 1366:     if ($env{'form.highlight'}) {
                   1367:        foreach (split(/\,/,$env{'form.highlight'})) {
1.66      www      1368:            my $anchorname=$_;
                   1369: 	   my $matchthis=$anchorname;
                   1370:            $matchthis=~s/\_+/\\s\+/g;
1.317     albertel 1371:            $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142     albertel 1372:        }
1.66      www      1373:     }
1.372     albertel 1374:     if ($env{'form.link'}) {
                   1375:        foreach (split(/\,/,$env{'form.link'})) {
1.66      www      1376:            my ($anchorname,$linkurl)=split(/\>/,$_);
                   1377: 	   my $matchthis=$anchorname;
                   1378:            $matchthis=~s/\_+/\\s\+/g;
1.317     albertel 1379:            $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142     albertel 1380:        }
1.66      www      1381:     }
1.372     albertel 1382:     if ($env{'form.anchor'}) {
                   1383:         my $anchorname=$env{'form.anchor'};
1.66      www      1384: 	my $matchthis=$anchorname;
                   1385:         $matchthis=~s/\_+/\\s\+/g;
1.317     albertel 1386:         $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66      www      1387:         $result.=(<<"ENDSCRIPT");
1.226     albertel 1388: <script type="text/javascript">
1.66      www      1389:     document.location.hash='$anchorname';
                   1390: </script>
                   1391: ENDSCRIPT
                   1392:     }
                   1393:     return $result;
                   1394: }
                   1395: 
1.79      www      1396: sub storefile {
                   1397:     my ($file,$contents)=@_;
1.290     albertel 1398:     &Apache::lonnet::correct_line_ends(\$contents);
1.79      www      1399:     if (my $fh=Apache::File->new('>'.$file)) {
                   1400: 	print $fh $contents;
                   1401:         $fh->close();
1.271     www      1402:         return 1;
1.147     albertel 1403:     } else {
1.482     bisitz   1404: 	&warning(&mt('Unable to save file [_1]','<tt>'.$file.'</tt>'));
1.271     www      1405: 	return 0;
1.79      www      1406:     }
                   1407: }
                   1408: 
1.151     albertel 1409: sub createnewhtml {
1.321     www      1410:     my $title=&mt('Title of document goes here');
                   1411:     my $body=&mt('Body of document goes here');
                   1412:     my $filecontents=(<<SIMPLECONTENT);
1.78      www      1413: <html>
                   1414: <head>
1.321     www      1415: <title>$title</title>
1.78      www      1416: </head>
                   1417: <body bgcolor="#FFFFFF">
1.321     www      1418: $body
1.78      www      1419: </body>
                   1420: </html>
                   1421: SIMPLECONTENT
1.321     www      1422:     return $filecontents;
1.151     albertel 1423: }
                   1424: 
1.274     albertel 1425: sub createnewsty {
                   1426:   my $filecontents=(<<SIMPLECONTENT);
                   1427: <definetag name="">
                   1428:     <render>
                   1429:        <web></web>
                   1430:        <tex></tex>
                   1431:     </render>
                   1432: </definetag>
                   1433: SIMPLECONTENT
                   1434:   return $filecontents;
                   1435: }
                   1436: 
1.493     raeburn  1437: sub createnewjs {
                   1438:     my $filecontents=(<<SIMPLECONTENT);
                   1439: <script type="text/javascript" language="Javascript">
                   1440: 
                   1441: </script>
                   1442: SIMPLECONTENT
                   1443:     return $filecontents;
                   1444: }
                   1445: 
1.472     www      1446: sub verify_html {
                   1447:     my ($filecontents)=@_;
1.516     raeburn  1448:     my ($is_html,$is_xml);
                   1449:     if ($filecontents =~/(?:\<|\&lt\;)\?xml[^\<]*\?(?:\>|\&gt\;)/is) {
                   1450:         $is_xml = 1;
1.518     raeburn  1451:     } elsif ($filecontents =~/(?:\<|\&lt\;)html(?:\s+[^\<]+|\s*)(?:\>|\&gt\;)/is) {
1.516     raeburn  1452:         $is_html = 1;
                   1453:     }
                   1454:     unless ($is_xml || $is_html) {
                   1455:         return &mt('File does not have [_1] or [_2] starting tag','&lt;html&gt;','&lt;?xml ?&gt;');
                   1456:     }
                   1457:     if ($is_html) {
                   1458:         if ($filecontents!~/(?:\<|\&lt\;)\/html(?:\>|\&gt\;)/is) {
                   1459:             return &mt('File does not have [_1] ending tag','&lt;html&gt;');
                   1460:         }
                   1461:         if ($filecontents!~/(?:\<|\&lt\;)(?:body|frameset)[^\<]*(?:\>|\&gt\;)/is) {
                   1462:             return &mt('File does not have [_1] or [_2] starting tag','&lt;body&gt;','&lt;frameset&gt;');
                   1463:         }
                   1464:         if ($filecontents!~/(?:\<|\&lt\;)\/(?:body|frameset)[^\<]*(?:\>|\&gt\;)/is) {
                   1465:             return &mt('File does not have [_1] or [_2] ending tag','&lt;body&gt;','&lt;frameset&gt;');
                   1466:         }
1.472     www      1467:     }
                   1468:     return '';
                   1469: }
1.147     albertel 1470: 
1.478     www      1471: sub renderingoptions {
                   1472:     my %langchoices=('' => '');
                   1473:     foreach (&Apache::loncommon::languageids()) {
                   1474:         if (&Apache::loncommon::supportedlanguagecode($_)) {
                   1475:             $langchoices{&Apache::loncommon::supportedlanguagecode($_)}
                   1476:                        = &Apache::loncommon::plainlanguagedescription($_);
                   1477:         }
                   1478:     }
1.500     raeburn  1479:     my $output;
                   1480:     unless ($env{'form.forceedit'}) {
1.504     bisitz   1481:        $output .=
                   1482:            '<span class="LC_nobreak">'.
1.500     raeburn  1483:            &mt('Language:').' '.
1.504     bisitz   1484:            &Apache::loncommon::select_form(
                   1485:                $env{'form.languages'},
                   1486:                'languages',
1.510     raeburn  1487:                {&Apache::lonlocal::texthash(%langchoices)}).
1.504     bisitz   1488:            '</span>';
1.500     raeburn  1489:     }
1.504     bisitz   1490:     $output .=
                   1491:      ' <span class="LC_nobreak">'.
1.479     bisitz   1492:        &mt('Math Rendering:').' '.
1.504     bisitz   1493:        &Apache::loncommon::select_form(
                   1494:            $env{'form.texengine'},
                   1495:            'texengine',
1.510     raeburn  1496:            {&Apache::lonlocal::texthash
1.504     bisitz   1497:                (''        => '',
                   1498:                 'tth'     => 'tth (TeX to HTML)',
                   1499:                 'jsMath'  => 'jsMath',
1.510     raeburn  1500:                 'mimetex' => 'mimetex (Convert to Images)')}).
1.504     bisitz   1501:      '</span>';
1.500     raeburn  1502:     return $output;
1.478     www      1503: }
                   1504: 
1.151     albertel 1505: sub inserteditinfo {
1.470     albertel 1506:       my ($filecontents, $filetype, $filename)=@_;
1.314     albertel 1507:       $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.274     albertel 1508:       my $xml_help = '';
1.321     www      1509:       my $initialize='';
1.452     albertel 1510:       my $textarea_id = 'filecont';
1.492     raeburn  1511:       my $dragmath_button;
1.452     albertel 1512:       my ($add_to_onload, $add_to_onresize);
1.456     albertel 1513:       $initialize=&Apache::lonhtmlcommon::spellheader();
1.514     raeburn  1514:       if (($filetype eq 'html') && (&Apache::lonhtmlcommon::htmlareabrowser())) {
1.463     albertel 1515: 	  my $lang = &Apache::lonhtmlcommon::htmlarea_lang();
1.512     raeburn  1516:           my %textarea_args = (
                   1517:                                 fullpage => 'true',
                   1518:                                 dragmath => 'math',
                   1519:                               );
1.514     raeburn  1520:           $initialize .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args); 
                   1521:       }
                   1522:       $initialize .= (<<FULLPAGE);
1.321     www      1523: <script type="text/javascript">
1.514     raeburn  1524: // <![CDATA[
1.321     www      1525:     function initDocument() {
1.463     albertel 1526: 	resize_textarea('$textarea_id','LC_aftertextarea');
1.321     www      1527:     }
1.514     raeburn  1528: // ]]>
1.321     www      1529: </script>
                   1530: FULLPAGE
1.514     raeburn  1531:       if ($filetype eq 'html') {
                   1532:           $dragmath_button = '<span id="math_filecont">'.&Apache::lonhtmlcommon::dragmath_button('filecont',1).'</span>';
                   1533:           $initialize .= "\n".&Apache::lonhtmlcommon::dragmath_js('EditMathPopup');
1.512     raeburn  1534:       }
1.456     albertel 1535:       $add_to_onload = 'initDocument();';
                   1536:       $add_to_onresize = "resize_textarea('$textarea_id','LC_aftertextarea');";
                   1537: 
                   1538:       if ($filetype eq 'html') {
1.321     www      1539: 	  $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274     albertel 1540:       }
1.452     albertel 1541: 
1.254     albertel 1542:       my $titledisplay=&display_title();
1.512     raeburn  1543:       my $textareaclass;
1.426     banghart 1544:       my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
                   1545: 					 'vi' => 'Save and View',
1.427     banghart 1546: 					 'dv' => 'Discard Edits and View',
1.428     banghart 1547: 					 'un' => 'undo',
1.280     www      1548: 					 'ed' => 'Edit');
1.512     raeburn  1549:       my $spelllink = &Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.451     albertel 1550:       my $textarea_events = &Apache::edit::element_change_detection();
                   1551:       my $form_events     = &Apache::edit::form_change_detection();
1.491     raeburn  1552:       my $htmlerror;
                   1553:       if ($filetype eq 'html') {
                   1554:           $htmlerror=&verify_html($filecontents);
                   1555:           if ($htmlerror) {
                   1556:               $htmlerror='<span class="LC_error">'.$htmlerror.'</span>';
                   1557:           }
1.501     raeburn  1558:           if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1.515     raeburn  1559:               $textareaclass = 'class="LC_richDefaultOff"';
1.501     raeburn  1560:           }
1.472     www      1561:       }
1.78      www      1562:       my $editfooter=(<<ENDFOOTER);
1.321     www      1563: $initialize
1.78      www      1564: <a name="editsection" />
1.451     albertel 1565: <form $form_events method="post" name="xmledit">
1.470     albertel 1566:   <div class="LC_edit_problem_editxml_header">
                   1567:     <table class="LC_edit_problem_header_title"><tr><td>
                   1568:         $filename
                   1569:       </td><td align="right">
                   1570:         $xml_help
                   1571:       </td></tr>
                   1572:     </table>
                   1573:     <div class="LC_edit_problem_discards">
                   1574:       <input type="submit" name="discardview" accesskey="d" value="$lt{'dv'}" />
                   1575:       <input type="submit" name="Undo" accesskey="u" value="$lt{'un'}" />
1.513     raeburn  1576:       $htmlerror $dragmath_button
1.470     albertel 1577:     </div>
                   1578:     <div class="LC_edit_problem_saves">
                   1579:       <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
                   1580:       <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
                   1581:     </div>
                   1582:   </div>
1.513     raeburn  1583:   <textarea $textarea_events style="width:100%" cols="80" rows="44" name="filecont" id="filecont" $textareaclass>$filecontents</textarea><br />$spelllink
1.470     albertel 1584:   <div id="LC_aftertextarea">
                   1585:     <br />
                   1586:     $titledisplay
                   1587:   </div>
1.78      www      1588: </form>
1.321     www      1589: </body>
1.78      www      1590: ENDFOOTER
1.452     albertel 1591:       return ($editfooter,$add_to_onload,$add_to_onresize);;
1.78      www      1592: }
                   1593: 
1.152     albertel 1594: sub get_target {
1.372     albertel 1595:   my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
                   1596:   if ( $env{'request.state'} eq 'published') {
                   1597:     if ( defined($env{'form.grade_target'})
1.152     albertel 1598: 	 && ($viewgrades == 'F' )) {
1.372     albertel 1599:       return ($env{'form.grade_target'});
                   1600:     } elsif (defined($env{'form.grade_target'})) {
                   1601:       if (($env{'form.grade_target'} eq 'web') ||
                   1602: 	  ($env{'form.grade_target'} eq 'tex') ) {
                   1603: 	return $env{'form.grade_target'}
1.153     albertel 1604:       } else {
                   1605: 	return 'web';
                   1606:       }
1.152     albertel 1607:     } else {
                   1608:       return 'web';
                   1609:     }
1.372     albertel 1610:   } elsif ($env{'request.state'} eq 'construct') {
                   1611:     if ( defined($env{'form.grade_target'})) {
                   1612:       return ($env{'form.grade_target'});
1.152     albertel 1613:     } else {
                   1614:       return 'web';
                   1615:     }
                   1616:   } else {
                   1617:     return 'web';
                   1618:   }
                   1619: }
                   1620: 
1.24      sakharuk 1621: sub handler {
1.255     sakharuk 1622:     my $request=shift;
1.493     raeburn  1623: 
1.255     sakharuk 1624:     my $target=&get_target();
1.372     albertel 1625:     $Apache::lonxml::debug=$env{'user.debug'};
1.255     sakharuk 1626:     
1.364     albertel 1627:     &Apache::loncommon::content_type($request,'text/html');
1.255     sakharuk 1628:     &Apache::loncommon::no_cache($request);
1.372     albertel 1629:     if ($env{'request.state'} eq 'published') {
1.363     albertel 1630: 	$request->set_last_modified(&Apache::lonnet::metadata($request->uri,
                   1631: 							      'lastrevisiondate'));
                   1632:     }
1.499     raeburn  1633:     # Embedded Flash movies from Camtasia served from https will not display in IE
                   1634:     #   if XML config file has expired from cache.    
                   1635:     if ($ENV{'SERVER_PORT'} == 443) {
                   1636:         if ($request->uri =~ /\.xml$/) {
                   1637:             my ($httpbrowser,$clientbrowser) =
                   1638:                 &Apache::loncommon::decode_user_agent($request);
                   1639:             if ($clientbrowser =~ /^explorer$/i) {
                   1640:                 delete $request->headers_out->{'Cache-control'};
                   1641:                 delete $request->headers_out->{'Pragma'};
                   1642:                 my $expiration = time + 60;
                   1643:                 my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime($expiration));
                   1644:                 $request->headers_out->set("Expires" => $date);
                   1645:             }
                   1646:         }
                   1647:     }
1.255     sakharuk 1648:     $request->send_http_header;
                   1649:     
                   1650:     return OK if $request->header_only;
1.68      www      1651: 
                   1652: 
1.255     sakharuk 1653:     my $file=&Apache::lonnet::filelocation("",$request->uri);
1.502     raeburn  1654:     my ($filetype,$breadcrumbtext);
                   1655:     if ($file =~ /\.(sty|css|js|txt|tex)$/) {
1.493     raeburn  1656: 	$filetype=$1;
1.274     albertel 1657:     } else {
                   1658: 	$filetype='html';
                   1659:     }
1.502     raeburn  1660:     if ($filetype eq 'sty') {
                   1661:         $breadcrumbtext = 'Style File Editor';
                   1662:     } elsif ($filetype eq 'js') {
                   1663:         $breadcrumbtext = 'Javascript Editor';
                   1664:     } elsif ($filetype eq 'css') {
                   1665:         $breadcrumbtext = 'CSS Editor';
                   1666:     } elsif ($filetype eq 'txt') {
                   1667:         $breadcrumbtext = 'Text Editor';
                   1668:     } elsif ($filetype eq 'tex') {
                   1669:         $breadcrumbtext = 'TeX Editor';
                   1670:     } else {
                   1671:         $breadcrumbtext = 'HTML Editor';
                   1672:     }
1.493     raeburn  1673: 
1.78      www      1674: #
                   1675: # Edit action? Save file.
                   1676: #
1.428     banghart 1677:     if (!($env{'request.state'} eq 'published')) {
                   1678: 	if ($env{'form.savethisfile'} || $env{'form.viewmode'} || $env{'form.Undo'}) {
1.429     albertel 1679: 	    my $html_file=&Apache::lonnet::getfile($file);
                   1680: 	    my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1.472     www      1681:             if ($env{'form.savethisfile'}) {
                   1682:                 $env{'form.editmode'}='Edit'; #force edit mode
                   1683:             }
1.255     sakharuk 1684: 	}
                   1685:     }
                   1686:     my %mystyle;
                   1687:     my $result = '';
                   1688:     my $filecontents=&Apache::lonnet::getfile($file);
                   1689:     if ($filecontents eq -1) {
1.402     albertel 1690: 	my $start_page=&Apache::loncommon::start_page('File Error');
1.412     albertel 1691: 	my $end_page=&Apache::loncommon::end_page();
1.495     bisitz   1692:         my $errormsg='<p class="LC_error">'
                   1693:                     .&mt('File not found: [_1]'
                   1694:                         ,'<span class="LC_filename">'.$file.'</span>')
                   1695:                     .'</p>';
1.255     sakharuk 1696: 	$result=(<<ENDNOTFOUND);
1.402     albertel 1697: $start_page
1.495     bisitz   1698: $errormsg
1.402     albertel 1699: $end_page
1.78      www      1700: ENDNOTFOUND
1.343     albertel 1701:         $filecontents='';
1.372     albertel 1702: 	if ($env{'request.state'} ne 'published') {
1.274     albertel 1703: 	    if ($filetype eq 'sty') {
                   1704: 		$filecontents=&createnewsty();
1.493     raeburn  1705:             } elsif ($filetype eq 'js') {
                   1706:                 $filecontents=&createnewjs();
1.502     raeburn  1707:             } elsif ($filetype ne 'css' && $filetype ne 'txt' && $filetype ne 'tex') {
1.274     albertel 1708: 		$filecontents=&createnewhtml();
                   1709: 	    }
1.372     albertel 1710: 	    $env{'form.editmode'}='Edit'; #force edit mode
1.255     sakharuk 1711: 	}
                   1712:     } else {
1.372     albertel 1713: 	unless ($env{'request.state'} eq 'published') {
1.343     albertel 1714: 	    if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1.381     www      1715: 		&Apache::lonxml::error(&mt('This file appears to be a rendering of a LON-CAPA resource. If this is correct, this resource will act very oddly and incorrectly.'));
1.343     albertel 1716: 	    }
1.264     www      1717: #
                   1718: # we are in construction space, see if edit mode forced
1.385     albertel 1719:             &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                   1720: 						    ['editmode']);
1.255     sakharuk 1721: 	}
1.427     banghart 1722: 	if (!$env{'form.editmode'} || $env{'form.viewmode'} || $env{'form.discardview'}) {
1.493     raeburn  1723:             if ($filetype eq 'html' || $filetype eq 'sty') {
                   1724: 	        &Apache::structuretags::reset_problem_globals();
                   1725: 	        $result = &Apache::lonxml::xmlparse($request,$target,
                   1726:                                                     $filecontents,'',%mystyle);
1.455     albertel 1727: 	    # .html files may contain <problem> or <Task> need to clean
                   1728: 	    # up if it did
1.493     raeburn  1729: 	        &Apache::structuretags::reset_problem_globals();
                   1730: 	        &Apache::lonhomework::finished_parsing();
1.502     raeburn  1731:             } elsif ($filetype eq 'tex') {
1.503     raeburn  1732:                 $result = &Apache::lontexconvert::converted(\$filecontents,
                   1733:                               $env{'form.texengine'});
                   1734:                 if ($env{'form.return_only_error_and_warning_counts'}) {
                   1735:                     $result = "$errorcount:$warningcount";
                   1736:                 }
1.493     raeburn  1737:             } else {
                   1738:                 $result = $filecontents;
                   1739:             }
1.385     albertel 1740: 	    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                   1741: 						    ['rawmode']);
1.395     albertel 1742: 	    if ($env{'form.rawmode'}) { $result = $filecontents; }
1.503     raeburn  1743:             if (($filetype ne 'html') && 
                   1744:                 (!$env{'form.return_only_error_and_warning_counts'})) {
1.502     raeburn  1745:                 my $nochgview = 1;
1.495     bisitz   1746:                 my $controls = '';
                   1747:                     if ($env{'request.state'} eq 'construct') {
                   1748:                         $controls = &Apache::loncommon::head_subbox(
                   1749:                                         &Apache::loncommon::CSTR_pageheader()
                   1750:                                        .&Apache::londefdef::edit_controls($nochgview));
                   1751:                     }
1.502     raeburn  1752:                 if ($filetype ne 'sty' && $filetype ne 'tex') {
1.493     raeburn  1753:                     $result =~ s/</&lt;/g;
                   1754:                     $result =~ s/>/&gt;/g;
                   1755:                     $result = '<table class="LC_sty_begin">'.
                   1756:                               '<tr><td><b><pre>'.$result.
                   1757:                               '</pre></b></td></tr></table>';
                   1758:                 }
1.506     droeschl 1759:                 my $brcrum;
                   1760:                 if ($env{'request.state'} eq 'construct') {
1.523     raeburn  1761:                     $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
1.506     droeschl 1762:                                 'text' => 'Construction Space'},
                   1763:                                {'href' => '',
                   1764:                                 'text' => $breadcrumbtext}];
1.493     raeburn  1765:                 } else {
1.506     droeschl 1766:                     $brcrum = ''; # FIXME: Where are we?
1.493     raeburn  1767:                 }
1.506     droeschl 1768:                 my %options = ('bread_crumbs' => $brcrum,
                   1769:                                'bgcolor'      => '#FFFFFF');
                   1770:                 $result =
                   1771:                     &Apache::loncommon::start_page(undef,undef,\%options)
                   1772:                    .$controls
                   1773:                    .$result
                   1774:                    .&Apache::loncommon::end_page();
1.493     raeburn  1775:             }
1.495     bisitz   1776:         }
1.147     albertel 1777:     }
1.456     albertel 1778: 
1.78      www      1779: #
                   1780: # Edit action? Insert editing commands
                   1781: #
1.372     albertel 1782:     unless ($env{'request.state'} eq 'published') {
1.427     banghart 1783: 	if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'})))
1.450     albertel 1784: 	{
1.470     albertel 1785: 	    my $displayfile=$request->uri;
                   1786: 	    $displayfile=~s/^\/[^\/]*//;
                   1787: 
1.452     albertel 1788: 	    my ($edit_info, $add_to_onload, $add_to_onresize)=
1.470     albertel 1789: 		&inserteditinfo($filecontents,$filetype,$displayfile);
1.450     albertel 1790: 
                   1791: 	    my %options = 
                   1792: 		('add_entries' =>
1.495     bisitz   1793:                    {'onresize'     => $add_to_onresize,
                   1794:                     'onload'       => $add_to_onload,   });
1.500     raeburn  1795:             my $header;
                   1796:             if ($env{'request.state'} eq 'construct') {
                   1797:                 $options{'bread_crumbs'} = [{
1.523     raeburn  1798:                             'href' => &Apache::loncommon::authorspace($request->uri),
1.500     raeburn  1799:                             'text' => 'Construction Space'},
                   1800:                            {'href' => '',
1.502     raeburn  1801:                             'text' => $breadcrumbtext}];
1.500     raeburn  1802:                 $header = &Apache::loncommon::head_subbox(
                   1803:                               &Apache::loncommon::CSTR_pageheader());
                   1804:             }
1.452     albertel 1805: 	    my $js =
                   1806: 		&Apache::edit::js_change_detection().
                   1807: 		&Apache::loncommon::resize_textarea_js();
1.451     albertel 1808: 	    my $start_page = &Apache::loncommon::start_page(undef,$js,
1.402     albertel 1809: 							    \%options);
1.495     bisitz   1810:             $result = $start_page
1.500     raeburn  1811:                      .$header
1.495     bisitz   1812:                      .&Apache::lonxml::message_location()
                   1813:                      .$edit_info
                   1814:                      .&Apache::loncommon::end_page();
1.493     raeburn  1815:         }
1.147     albertel 1816:     }
1.402     albertel 1817:     if ($filetype eq 'html') { &writeallows($request->uri); }
1.501     raeburn  1818: 
1.309     albertel 1819:     &Apache::lonxml::add_messages(\$result);
1.255     sakharuk 1820:     $request->print($result);
                   1821:     
                   1822:     return OK;
1.253     albertel 1823: }
                   1824: 
                   1825: sub display_title {
                   1826:     my $result;
1.372     albertel 1827:     if ($env{'request.state'} eq 'construct') {
1.253     albertel 1828: 	my $title=&Apache::lonnet::gettitle();
                   1829: 	if (!defined($title) || $title eq '') {
1.372     albertel 1830: 	    $title = $env{'request.filename'};
1.253     albertel 1831: 	    $title = substr($title, rindex($title, '/') + 1);
                   1832: 	}
1.476     bisitz   1833:         $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA "
                   1834:                   .&mt('Construction Space')."';</script>";
1.253     albertel 1835:     }
                   1836:     return $result;
1.24      sakharuk 1837: }
1.147     albertel 1838: 
1.22      albertel 1839: sub debug {
1.298     albertel 1840:     if ($Apache::lonxml::debug eq "1") {
                   1841: 	$|=1;
1.300     albertel 1842: 	my $request=$Apache::lonxml::request;
1.388     albertel 1843: 	if (!$request) {
                   1844: 	    eval { $request=Apache->request; };
                   1845: 	}
                   1846: 	if (!$request) {
                   1847: 	    eval { $request=Apache2::RequestUtil->request; };
                   1848: 	}
1.314     albertel 1849: 	$request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.346     albertel 1850: 	#&Apache::lonnet::logthis($_[0]);
1.298     albertel 1851:     }
1.22      albertel 1852: }
1.49      albertel 1853: 
1.348     albertel 1854: sub show_error_warn_msg {
1.522     raeburn  1855:     if (($env{'request.filename'} eq 
                   1856:          $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/lib/templates/simpleproblem.problem') &&
                   1857:         (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.351     albertel 1858: 	return 1;
                   1859:     }
1.348     albertel 1860:     return (($Apache::lonxml::debug eq 1) ||
1.372     albertel 1861: 	    ($env{'request.state'} eq 'construct') ||
1.348     albertel 1862: 	    ($Apache::lonhomework::browse eq 'F'
                   1863: 	     &&
1.372     albertel 1864: 	     $env{'form.show_errors'} eq 'on'));
1.348     albertel 1865: }
                   1866: 
1.22      albertel 1867: sub error {
1.454     albertel 1868:     my @errors = @_;
                   1869: 
1.336     albertel 1870:     $errorcount++;
1.454     albertel 1871: 
1.490     www      1872:     $Apache::lonxml::internal_error=1;
                   1873: 
1.454     albertel 1874:     if (defined($Apache::inputtags::part)) {
                   1875: 	if ( @Apache::inputtags::response ) {
                   1876: 	    push(@errors,
                   1877: 		 &mt("This error occurred while processing response [_1] in part [_2]",
                   1878: 		     $Apache::inputtags::response[-1],
                   1879: 		     $Apache::inputtags::part));
                   1880: 	} else {
                   1881: 	    push(@errors,
                   1882: 		 &mt("This error occurred while processing part [_1]",
                   1883: 		     $Apache::inputtags::part));
                   1884: 	}
                   1885:     }
                   1886: 
1.348     albertel 1887:     if ( &show_error_warn_msg() ) {
1.336     albertel 1888: 	# If printing in construction space, put the error inside <pre></pre>
                   1889: 	push(@Apache::lonxml::error_messages,
1.484     bisitz   1890: 	     $Apache::lonxml::warnings_error_header
                   1891:              .'<div class="LC_error">'
                   1892:              .'<b>'.&mt('ERROR:').' </b>'.join("<br />\n",@errors)
                   1893:              ."</div>\n");
1.336     albertel 1894: 	$Apache::lonxml::warnings_error_header='';
                   1895:     } else {
                   1896: 	my $errormsg;
                   1897: 	my ($symb)=&Apache::lonnet::symbread();
                   1898: 	if ( !$symb ) {
                   1899: 	    #public or browsers
1.486     bisitz   1900: 	    $errormsg=&mt("An error occurred while processing this resource. The author has been notified.");
1.403     albertel 1901: 	}
1.413     albertel 1902: 	my $host=$Apache::lonnet::perlvar{'lonHostID'};
1.476     bisitz   1903: 	push(@errors,
                   1904:         &mt("The error occurred on host [_1]",
                   1905:              "<tt>$host</tt>"));
1.454     albertel 1906: 
                   1907: 	my $msg = join('<br />', @errors);
                   1908: 
1.336     albertel 1909: 	#notify author
1.403     albertel 1910: 	&Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
1.336     albertel 1911: 	#notify course
1.372     albertel 1912: 	if ( $symb && $env{'request.course.id'} ) {
1.380     www      1913: 	    my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
                   1914: 	    my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1.440     albertel 1915: 	    my (undef,%users)=&Apache::lonmsg::decide_receiver(undef,0,1,1,1);
1.372     albertel 1916: 	    my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1.435     raeburn  1917:             my $baseurl = &Apache::lonnet::clutter($declutter);
1.336     albertel 1918: 	    my @userlist;
                   1919: 	    foreach (keys %users) {
                   1920: 		my ($user,$domain) = split(/:/, $_);
                   1921: 		push(@userlist,"$user\@$domain");
1.380     www      1922: 		my $key=$declutter.'_'.$user.'_'.$domain;
                   1923: 		my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
                   1924: 						      [$key],
                   1925: 						      $cdom,$cnum);
                   1926: 		my $now=time;
                   1927: 		if ($now-$lastnotified{$key}>86400) {
1.434     raeburn  1928:                     my $title = &Apache::lonnet::gettitle($symb);
                   1929:                     my $sentmessage;
1.380     www      1930: 		    &Apache::lonmsg::user_normal_msg($user,$domain,
1.435     raeburn  1931: 		        "Error [$title]",$msg,'',$baseurl,'','',
1.434     raeburn  1932:                         \$sentmessage,$symb,$title,1);
1.380     www      1933: 		    &Apache::lonnet::put('nohist_xmlerrornotifications',
                   1934: 					 {$key => $now},
                   1935: 					 $cdom,$cnum);		
                   1936: 		}
1.336     albertel 1937: 	    }
1.372     albertel 1938: 	    if ($env{'request.role.adv'}) {
1.486     bisitz   1939: 		$errormsg=&mt("An error occurred while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1.336     albertel 1940: 	    } else {
1.486     bisitz   1941: 		$errormsg=&mt("An error occurred while processing this resource. The instructor has been notified.");
1.336     albertel 1942: 	    }
                   1943: 	}
                   1944: 	push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1.52      albertel 1945:     }
1.22      albertel 1946: }
1.49      albertel 1947: 
1.22      albertel 1948: sub warning {
1.295     albertel 1949:     $warningcount++;
1.261     albertel 1950:   
1.372     albertel 1951:     if ($env{'form.grade_target'} ne 'tex') {
1.348     albertel 1952: 	if ( &show_error_warn_msg() ) {
1.309     albertel 1953: 	    push(@Apache::lonxml::warning_messages,
1.484     bisitz   1954: 		 $Apache::lonxml::warnings_error_header
                   1955:                 .'<div class="LC_warning">'
                   1956:                 .&mt('[_1]W[_2]ARNING','<b>','</b>')."<b>:</b> ".join('<br />',@_)
                   1957:                 ."</div>\n"
1.482     bisitz   1958:                 );
1.295     albertel 1959: 	    $Apache::lonxml::warnings_error_header='';
                   1960: 	}
                   1961:     }
1.309     albertel 1962: }
                   1963: 
                   1964: sub info {
1.372     albertel 1965:     if ($env{'form.grade_target'} ne 'tex' 
                   1966: 	&& $env{'request.state'} eq 'construct') {
1.309     albertel 1967: 	push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
                   1968:     }
                   1969: }
                   1970: 
                   1971: sub message_location {
                   1972:     return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
                   1973: }
                   1974: 
                   1975: sub add_messages {
                   1976:     my ($msg)=@_;
                   1977:     my $result=join(' ',
                   1978: 		    @Apache::lonxml::info_messages,
                   1979: 		    @Apache::lonxml::error_messages,
                   1980: 		    @Apache::lonxml::warning_messages);
                   1981:     undef(@Apache::lonxml::info_messages);
                   1982:     undef(@Apache::lonxml::error_messages);
                   1983:     undef(@Apache::lonxml::warning_messages);
                   1984:     $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
                   1985:     $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83      albertel 1986: }
                   1987: 
                   1988: sub get_param {
1.213     albertel 1989:     my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
                   1990:     if ( ! $context ) { $context = -1; }
                   1991:     my $args ='';
                   1992:     if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297     sakharuk 1993:     if ( ! $Apache::lonxml::usestyle ) {
                   1994: 	$args=$Apache::lonxml::style_values.$args;
                   1995:     }
1.213     albertel 1996:     if ( ! $args ) { return undef; }
                   1997:     if ( $case_insensitive ) {
1.417     albertel 1998: 	if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
1.213     albertel 1999: 	    return &Apache::run::run("{$args;".'return $'.$param.'}',
                   2000:                                      $safeeval); #'
                   2001: 	} else {
                   2002: 	    return undef;
                   2003: 	}
                   2004:     } else {
1.417     albertel 2005: 	if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
1.213     albertel 2006: 	    return &Apache::run::run("{$args;".'return $'.$param.'}',
                   2007:                                      $safeeval); #'
                   2008: 	} else {
                   2009: 	    return undef;
                   2010: 	}
                   2011:     }
1.22      albertel 2012: }
                   2013: 
1.132     albertel 2014: sub get_param_var {
1.213     albertel 2015:   my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132     albertel 2016:   if ( ! $context ) { $context = -1; }
                   2017:   my $args ='';
                   2018:   if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297     sakharuk 2019:   if ( ! $Apache::lonxml::usestyle ) {
                   2020:       $args=$Apache::lonxml::style_values.$args;
                   2021:   }
1.230     albertel 2022:   &Apache::lonxml::debug("Args are $args param is $param");
1.213     albertel 2023:   if ($case_insensitive) {
1.419     albertel 2024:       if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
1.213     albertel 2025: 	  return undef;
                   2026:       }
1.419     albertel 2027:   } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
1.132     albertel 2028:   my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230     albertel 2029:   &Apache::lonxml::debug("first run is $value");
1.341     albertel 2030:   if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1.230     albertel 2031:       &Apache::lonxml::debug("doing second");
                   2032:       my @result=&Apache::run::run("return $value",$safeeval,1);
                   2033:       if (!defined($result[0])) {
                   2034: 	  return $value
                   2035:       } else {
                   2036: 	  if (wantarray) { return @result; } else { return $result[0]; }
                   2037:       }
1.132     albertel 2038:   } else {
                   2039:     return $value;
                   2040:   }
                   2041: }
                   2042: 
1.438     albertel 2043: sub register_insert_xml {
                   2044:     my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'}
                   2045: 				     .'/insertlist.xml');
                   2046:     my ($tagnum,$in_help)=(0,0);
1.442     albertel 2047:     my @alltags;
1.438     albertel 2048:     my $tag;
                   2049:     while (my $token = $parser->get_token()) {
                   2050: 	if ($token->[0] eq 'S') {
                   2051: 	    my $key;
                   2052: 	    if      ($token->[1] eq 'tag') {
                   2053: 		$tag = $token->[2]{'name'};
1.519     raeburn  2054: 		$insertlist{$tagnum.'.tag'} = $tag;
                   2055: 		$insertlist{$tag.'.num'}   = $tagnum;
1.442     albertel 2056: 		push(@alltags,$tag);
1.438     albertel 2057: 	    } elsif ($in_help && $token->[1] eq 'file') {
                   2058: 		$key = $tag.'.helpfile';
                   2059: 	    } elsif ($in_help && $token->[1] eq 'description') {
                   2060: 		$key = $tag.'.helpdesc';
                   2061: 	    } elsif ($token->[1] eq 'description' ||
                   2062: 		     $token->[1] eq 'color'       ||
                   2063: 		     $token->[1] eq 'show'          ) {
                   2064: 		$key = $tag.'.'.$token->[1];
                   2065: 	    } elsif ($token->[1] eq 'insert_sub') {
                   2066: 		$key = $tag.'.function';
                   2067: 	    } elsif ($token->[1] eq 'help') {
                   2068: 		$in_help=1;
                   2069: 	    } elsif ($token->[1] eq 'allow') {
1.442     albertel 2070: 		$key = $tag.'.allow';
1.438     albertel 2071: 	    }
                   2072: 	    if (defined($key)) {
                   2073: 		$insertlist{$key} = $parser->get_text();
                   2074: 		$insertlist{$key} =~ s/(^\s*|\s*$ )//gx;
                   2075: 	    }
                   2076: 	} elsif ($token->[0] eq 'E') {
                   2077: 	    if      ($token->[1] eq 'tag') {
                   2078: 		undef($tag);
                   2079: 		$tagnum++;
                   2080: 	    } elsif ($token->[1] eq 'help') {
                   2081: 		undef($in_help);
                   2082: 	    }
                   2083: 	}
                   2084:     }
1.442     albertel 2085:     
                   2086:     # parse the allows and ignore tags set to <show>no</show>
                   2087:     foreach my $tag (@alltags) {	
1.519     raeburn  2088:         next if (!exists($insertlist{$tag.'.allow'}));
                   2089: 	my $allow =  $insertlist{$tag.'.allow'};
1.442     albertel 2090:        	foreach my $element (split(',',$allow)) {
                   2091: 	    $element =~ s/(^\s*|\s*$ )//gx;
1.519     raeburn  2092: 	    if (!exists($insertlist{$element.'.show'})
                   2093:                 || $insertlist{$element.'.show'} ne 'no') {
1.442     albertel 2094: 		push(@{ $insertlist{$tag.'.which'} },$element);
                   2095: 	    }
                   2096: 	}
                   2097:     }
1.438     albertel 2098: }
                   2099: 
                   2100: sub register_insert {
                   2101:     return &register_insert_xml(@_);
                   2102: #    &dump_insertlist('2');
                   2103: }
                   2104: 
                   2105: sub dump_insertlist {
                   2106:     my ($ext) = @_;
                   2107:     open(XML,">/tmp/insertlist.xml.$ext");
                   2108:     print XML ("<insertlist>");
                   2109:     my $i=0;
                   2110: 
                   2111:     while (exists($insertlist{"$i.tag"})) {
                   2112: 	my $tag = $insertlist{"$i.tag"};
                   2113: 	print XML ("
                   2114: \t<tag name=\"$tag\">");
                   2115: 	if (defined($insertlist{"$tag.description"})) {
                   2116: 	    print XML ("
                   2117: \t\t<description>".$insertlist{"$tag.description"}."</description>");
                   2118: 	}
                   2119: 	if (defined($insertlist{"$tag.color"})) {
                   2120: 	    print XML ("
                   2121: \t\t<color>".$insertlist{"$tag.color"}."</color>");
                   2122: 	}
                   2123: 	if (defined($insertlist{"$tag.function"})) {
                   2124: 	    print XML ("
                   2125: \t\t<insert_sub>".$insertlist{"$tag.function"}."</insert_sub>");
                   2126: 	}
                   2127: 	if (defined($insertlist{"$tag.show"})
                   2128: 	    && $insertlist{"$tag.show"} ne 'yes') {
                   2129: 	    print XML ("
                   2130: \t\t<show>".$insertlist{"$tag.show"}."</show>");
                   2131: 	}
                   2132: 	if (defined($insertlist{"$tag.helpfile"})) {
                   2133: 	    print XML ("
                   2134: \t\t<help>
                   2135: \t\t\t<file>".$insertlist{"$tag.helpfile"}."</file>");
                   2136: 	    if ($insertlist{"$tag.helpdesc"} ne '') {
                   2137: 		print XML ("
                   2138: \t\t\t<description>".$insertlist{"$tag.helpdesc"}."</description>");
                   2139: 	    }
                   2140: 	    print XML ("
                   2141: \t\t</help>");
                   2142: 	}
                   2143: 	if (defined($insertlist{"$tag.which"})) {
                   2144: 	    print XML ("
                   2145: \t\t<allow>".join(',',sort(@{ $insertlist{"$tag.which"} }))."</allow>");
                   2146: 	}
                   2147: 	print XML ("
                   2148: \t</tag>");
                   2149: 	$i++;
                   2150:     }
                   2151:     print XML ("\n</insertlist>\n");
                   2152:     close(XML);
                   2153: }
                   2154: 
1.98      albertel 2155: sub description {
1.437     albertel 2156:     my ($token)=@_;
                   2157:     my $tag = &get_tag($token);
                   2158:     return $insertlist{$tag.'.description'};
1.268     bowersj2 2159: }
                   2160: 
                   2161: # Returns a list containing the help file, and the description
                   2162: sub helpinfo {
1.437     albertel 2163:     my ($token)=@_;
                   2164:     my $tag = &get_tag($token);
                   2165:     return ($insertlist{$tag.'.helpfile'}, $insertlist{$tag.'.helpdesc'});
                   2166: }
                   2167: 
                   2168: sub get_tag {
                   2169:     my ($token)=@_;
                   2170:     my $tagnum;
                   2171:     my $tag=$token->[1];
                   2172:     foreach my $namespace (reverse(@Apache::lonxml::namespace)) {
                   2173: 	my $testtag = $namespace.'::'.$tag;
                   2174: 	$tagnum = $insertlist{"$testtag.num"};
                   2175: 	last if (defined($tagnum));
                   2176:     }
                   2177:     if (!defined($tagnum)) {
                   2178: 	$tagnum = $Apache::lonxml::insertlist{"$tag.num"};
                   2179:     }
                   2180:     return $insertlist{"$tagnum.tag"};
1.98      albertel 2181: }
1.123     albertel 2182: 
1.485     onken    2183: ############################################################
                   2184: #                                           PDF-FORM-METHODS
                   2185: 
                   2186: =pod
                   2187: 
1.508     onken    2188: =item &print_pdf_radiobutton(fieldname, value)
1.485     onken    2189: 
1.508     onken    2190: Returns a latexline to generate a PDF-Form-Radiobutton.
                   2191: Note: Radiobuttons with equal names are automaticly grouped 
                   2192:       in a selection-group.
1.485     onken    2193: 
1.508     onken    2194: $fieldname: PDF internalname of the radiobutton(group)
                   2195: $value:     Value of radiobutton
1.485     onken    2196: 
                   2197: =cut
                   2198: sub print_pdf_radiobutton {
1.508     onken    2199:     my ($fieldname, $value) = @_;
                   2200:     return '\radioButton[\symbolchoice{circle}]{'
                   2201:            .$fieldname.'}{10bp}{10bp}{'.$value.'}';
1.485     onken    2202: }
                   2203: 
                   2204: 
                   2205: =pod
                   2206: 
                   2207: =item &print_pdf_start_combobox(fieldname)
                   2208: 
                   2209: Starts a latexline to generate a PDF-Form-Combobox with text.
                   2210: 
                   2211: $fieldname: PDF internal name of the Combobox
                   2212: 
                   2213: =cut
                   2214: sub print_pdf_start_combobox {
                   2215:     my $result;
                   2216:     my ($fieldName) = @_;
                   2217:     $result .= '\begin{tabularx}{\textwidth}{p{2.5cm}X}'."\n";
                   2218:     $result .= '\comboBox[]{'.$fieldName.'}{2.3cm}{14bp}{'; # 
                   2219: 
                   2220:     return $result;
                   2221: }
                   2222: 
                   2223: 
                   2224: =pod
                   2225: 
                   2226: =item &print_pdf_add_combobox_option(options)
                   2227: 
                   2228: Generates a latexline to add Options to a PDF-Form-ComboBox.
                   2229: 
                   2230: $option: PDF internal name of the Combobox-Option
                   2231: 
                   2232: =cut
                   2233: sub print_pdf_add_combobox_option {
                   2234: 
                   2235:     my $result;
                   2236:     my ($option) = @_;  
                   2237: 
                   2238:     $result .= '('.$option.')';
                   2239:     
                   2240:     return $result;
                   2241: }
                   2242: 
                   2243: 
                   2244: =pod
                   2245: 
                   2246: =item &print_pdf_end_combobox(text) {
                   2247: 
                   2248: Returns latexcode to end a PDF-Form-Combobox with text.
                   2249: 
                   2250: =cut
                   2251: sub print_pdf_end_combobox {
                   2252:     my $result;
                   2253:     my ($text) = @_;
                   2254: 
                   2255:     $result .= '}&'.$text."\\\\\n";
                   2256:     $result .= '\end{tabularx}' . "\n";
                   2257:     $result .= '\hspace{2mm}' . "\n";
                   2258:     return $result;
                   2259: }
                   2260: 
                   2261: 
                   2262: =pod
                   2263: 
                   2264: =item &print_pdf_hiddenField(fieldname, user, domain)
                   2265: 
                   2266: Returns a latexline to generate a PDF-Form-hiddenField with userdata.
                   2267: 
                   2268: $fieldname label for hiddentextfield
                   2269: $user:    name of user
                   2270: $domain:  domain of user
                   2271: 
                   2272: =cut
                   2273: sub print_pdf_hiddenfield {
                   2274:     my $result;
                   2275:     my ($fieldname, $user, $domain) = @_;
                   2276: 
                   2277:     $result .= '\textField [\F{\FHidden}\F{-\FPrint}\V{'.$domain.'&'.$user.'}]{'.$fieldname.'}{0in}{0in}'."\n";
                   2278: 
                   2279:     return $result;
                   2280: }
                   2281: 
1.1       sakharuk 2282: 1;
                   2283: __END__
1.68      www      2284: 

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