Annotation of loncom/xml/lonxml.pm, revision 1.529

1.2       sakharuk    1: # The LearningOnline Network with CAPA
1.3       sakharuk    2: # XML Parser Module 
1.2       sakharuk    3: #
1.529   ! raeburn     4: # $Id: lonxml.pm,v 1.528 2011/12/28 13:15:00 www 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();
1.529   ! raeburn   116: use Apache::lonnavmaps();
1.79      www       117: 
1.462     foxr      118: #====================================   Main subroutine: xmlparse  
                    119: 
1.72      albertel  120: #debugging control, to turn on debugging modify the correct handler
1.462     foxr      121: 
1.72      albertel  122: $Apache::lonxml::debug=0;
1.206     albertel  123: 
                    124: # keeps count of the number of warnings and errors generated in a parse
                    125: $warningcount=0;
                    126: $errorcount=0;
1.72      albertel  127: 
                    128: #path to the directory containing the file currently being processed
                    129: @pwd=();
                    130: 
                    131: #these two are used for capturing a subset of the output for later processing,
                    132: #don't touch them directly use &startredirection and &endredirection
                    133: @outputstack = ();
                    134: $redirection = 0;
                    135: 
                    136: #controls wheter the <import> tag actually does
                    137: $import = 1;
                    138: @extlinks=();
                    139: 
                    140: # meta mode is a bit weird only some output is to be turned off
                    141: #<output> tag turns metamode off (defined in londefdef.pm)
                    142: $metamode = 0;
                    143: 
                    144: # turns on and of run::evaluate actually derefencing var refs
                    145: $evaluate = 1;
1.7       albertel  146: 
1.74      albertel  147: # data structure for eidt mode, determines what tags can go into what other tags
                    148: %insertlist=();
1.68      www       149: 
1.99      albertel  150: # stores the list of active tag namespaces
1.76      albertel  151: @namespace=();
                    152: 
1.448     albertel  153: # stores all Scrit Vars displays for later showing
                    154: my @script_var_displays=();
                    155: 
1.172     albertel  156: # a pointer the the Apache request object
                    157: $Apache::lonxml::request='';
                    158: 
1.216     sakharuk  159: # a problem number counter, and check on ether it is used
1.237     sakharuk  160: $Apache::lonxml::counter=1;
1.204     albertel  161: $Apache::lonxml::counter_changed=0;
                    162: 
1.462     foxr      163: # Part counter hash.   In analysis mode, the
                    164: # problems can use this to record which parts increment the counter
                    165: # by how much.  The counter subs will maintain this hash via
                    166: # their optional part parameters.  Note that the assumption is that
                    167: # analysis is done in one request and therefore it is not necessary to
                    168: # save this information request-to-request.
                    169: 
                    170: 
                    171: %Apache::lonxml::counters_per_part = ();
                    172: 
1.212     albertel  173: #internal check on whether to look at style defs
                    174: $Apache::lonxml::usestyle=1;
1.260     albertel  175: 
                    176: #locations used to store the parameter string for style substitutions
                    177: $Apache::lonxml::style_values='';
                    178: $Apache::lonxml::style_end_values='';
1.212     albertel  179: 
1.281     albertel  180: #array of ssi calls that need to occur after we are done parsing
                    181: @Apache::lonxml::ssi_info=();
                    182: 
1.282     albertel  183: #should we do the postag variable interpolation
                    184: $Apache::lonxml::post_evaluate=1;
                    185: 
1.295     albertel  186: #a header message to emit in the case of any generated warning or errors
                    187: $Apache::lonxml::warnings_error_header='';
                    188: 
1.396     foxr      189: #  Control whether or not LaTeX symbols should be substituted for their
                    190: #  \ style equivalents...this may be turned off e.g. in an verbatim
                    191: #  environment.
                    192: 
                    193: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
                    194: 
                    195: sub enable_LaTeX_substitutions {
                    196:     $Apache::lonxml::substitute_LaTeX_symbols = 1;
                    197: }
                    198: sub disable_LaTeX_substitutions {
                    199:     $Apache::lonxml::substitute_LaTeX_symbols = 0;
                    200: }
                    201: 
1.68      www       202: sub xmlend {
1.335     sakharuk  203:     my ($target,$parser)=@_;
1.278     www       204:     my $mode='xml';
                    205:     my $status='OPEN';
1.368     albertel  206:     if ($Apache::lonhomework::parsing_a_problem ||
                    207: 	$Apache::lonhomework::parsing_a_task ) {
1.278     www       208: 	$mode='problem';
                    209: 	$status=$Apache::inputtags::status[-1]; 
                    210:     }
1.362     matthew   211:     my $discussion;
1.379     albertel  212:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                    213: 					   ['LONCAPA_INTERNAL_no_discussion']);
1.528     www       214:     if (
                    215:            (   (!exists($env{'form.LONCAPA_INTERNAL_no_discussion'})) 
                    216:             || ($env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true')
                    217:            ) 
                    218:         && ($env{'form.inhibitmenu'} ne 'yes')
                    219:        ) {
1.362     matthew   220:         $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
                    221:     }
1.334     sakharuk  222:     if ($target eq 'tex') {
1.335     sakharuk  223: 	$discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
1.334     sakharuk  224: 	&Apache::lonxml::newparser($parser,\$discussion,'');
                    225: 	return '';
                    226:     }
1.405     albertel  227: 
1.407     albertel  228:     return $discussion;
1.119     www       229: }
                    230: 
1.48      albertel  231: sub printalltags {
                    232:   my $temp;
                    233:   foreach $temp (sort keys %Apache::lonxml::alltags) {
1.141     albertel  234:     &Apache::lonxml::debug("$temp -- ".
                    235: 		  join(',',@{ $Apache::lonxml::alltags{$temp} }));
1.48      albertel  236:   }
                    237: }
1.31      sakharuk  238: 
1.3       sakharuk  239: sub xmlparse {
1.172     albertel  240:  my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96      albertel  241: 
1.172     albertel  242:  &setup_globals($request,$target);
1.232     albertel  243:  &Apache::inputtags::initialize_inputtags();
1.370     albertel  244:  &Apache::bridgetask::initialize_bridgetask();
1.232     albertel  245:  &Apache::outputtags::initialize_outputtags();
                    246:  &Apache::edit::initialize_edit();
1.287     albertel  247:  &Apache::londefdef::initialize_londefdef();
1.244     albertel  248: 
1.178     www       249: #
                    250: # do we have a course style file?
                    251: #
                    252: 
1.372     albertel  253:  if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
1.178     www       254:      my $bodytext=
1.372     albertel  255: 	 $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
1.178     www       256:      if ($bodytext) {
1.337     albertel  257: 	 foreach my $file (split(',',$bodytext)) {
                    258: 	     my $location=&Apache::lonnet::filelocation('',$file);
                    259: 	     my $styletext=&Apache::lonnet::getfile($location);
                    260: 	     if ($styletext ne '-1') {
                    261: 		 %style_for_target = (%style_for_target,
                    262: 				      &Apache::style::styleparser($target,$styletext));
                    263: 	     }
                    264: 	 }
                    265:      }
1.449     albertel  266:  } elsif ($env{'construct.style'}
                    267: 	  && ($env{'request.state'} eq 'construct')) {
1.372     albertel  268:      my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
1.291     sakharuk  269:      my $styletext=&Apache::lonnet::getfile($location);
1.449     albertel  270:      if ($styletext ne '-1') {
                    271: 	 %style_for_target = (%style_for_target,
                    272: 			      &Apache::style::styleparser($target,$styletext));
                    273:      }
1.178     www       274:  }
1.255     sakharuk  275: #&printalltags();
1.16      albertel  276:  my @pars = ();
1.372     albertel  277:  my $pwd=$env{'request.filename'};
1.23      albertel  278:  $pwd =~ s:/[^/]*$::;
                    279:  &newparser(\@pars,\$content_file_string,$pwd);
1.24      sakharuk  280: 
1.3       sakharuk  281:  my $safeeval = new Safe;
1.40      albertel  282:  my $safehole = new Safe::Hole;
1.82      ng        283:  &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3       sakharuk  284: #-------------------- Redefinition of the target in the case of compound target
                    285: 
                    286:  ($target, my @tenta) = split('&&',$target);
                    287: 
1.150     albertel  288:  my @stack = ();
1.3       sakharuk  289:  my @parstack = ();
1.358     albertel  290:  &initdepth();
                    291:  &init_alarm();
1.101     albertel  292:  my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
1.394     albertel  293: 				   $safeeval,\%style_for_target,1);
1.255     sakharuk  294: 
1.425     albertel  295:  if (@stack) {
1.482     bisitz    296:      &warning(&mt('At end of file some tags were still left unclosed:').
                    297: 	      ' <tt>&lt;'.join('&gt;</tt>, <tt>&lt;',reverse(@stack)).
1.425     albertel  298: 	      '&gt;</tt>');
                    299:  }
1.372     albertel  300:  if ($env{'request.uri'}) {
                    301:     &writeallows($env{'request.uri'});
1.125     www       302:  }
1.281     albertel  303:  &do_registered_ssi();
1.204     albertel  304:  if ($Apache::lonxml::counter_changed) { &store_counter() }
1.393     albertel  305: 
                    306:  &clean_safespace($safeeval);
                    307: 
1.448     albertel  308:  if (@script_var_displays) {
1.527     www       309:      my $scriptoutput = join('',@script_var_displays);
                    310:      $finaloutput=~s{(</body>\s*</html>)\s*$}{$scriptoutput$1}s;
1.448     albertel  311:      undef(@script_var_displays);
                    312:  }
1.469     albertel  313:  &init_state();
1.372     albertel  314:  if ($env{'form.return_only_error_and_warning_counts'}) {
1.473     www       315:      if ($env{'request.filename'}=~/\.(html|htm|xml)$/i) { 
                    316:         my $error=&verify_html($content_file_string);
                    317:         if ($error) { $errorcount++; }
                    318:      }
1.361     www       319:      return "$errorcount:$warningcount";
                    320:  }
1.3       sakharuk  321:  return $finaloutput;
1.106     www       322: }
                    323: 
1.191     albertel  324: sub latex_special_symbols {
1.272     albertel  325:     my ($string,$where)=@_;
1.396     foxr      326:     #
                    327:     #  If e.g. in verbatim mode, then don't substitute.
                    328:     #  but return original string.
                    329:     #
                    330:     if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
                    331: 	return $string;
                    332:     }
1.235     sakharuk  333:     if ($where eq 'header') {
1.414     foxr      334: 	$string =~ s/\\/\$\\backslash\$/g; # \  -> $\backslash$ per LaTex line by line pg  10.
1.311     albertel  335: 	$string =~ s/(\$|%|\{|\})/\\$1/g;
                    336: 	$string=&Apache::lonprintout::character_chart($string);
                    337: 	# any & or # leftover should be safe to just escape
                    338:         $string=~s/([^\\])\&/$1\\\&/g;
                    339:         $string=~s/([^\\])\#/$1\\\#/g;
1.415     foxr      340: 	$string =~ s/_/\\_/g;              # _ -> \_
                    341: 	$string =~ s/\^/\\\^{}/g;          # ^ -> \^{} 
1.229     sakharuk  342:     } else {
1.312     albertel  343: 	$string=~s/\\/\\ensuremath{\\backslash}/g;
1.367     albertel  344: 	$string=~s/\\\%|\%/\\\%/g;
                    345: 	$string=~s/\\{|{/\\{/g;
                    346: 	$string=~s/\\}|}/\\}/g;
1.378     albertel  347: 	$string=~s/\\ensuremath\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
1.367     albertel  348: 	$string=~s/\\\$|\$/\\\$/g;
                    349: 	$string=~s/\\\_|\_/\\\_/g;
1.313     albertel  350:         $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
1.310     sakharuk  351: 	$string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
1.311     albertel  352: 	$string=&Apache::lonprintout::character_chart($string);
                    353: 	# any & or # leftover should be safe to just escape
1.367     albertel  354: 	$string=~s/\\\&|\&/\\\&/g;
                    355: 	$string=~s/\\\#|\#/\\\#/g;
1.332     sakharuk  356:         $string=~s/\|/\$\\mid\$/g;
1.310     sakharuk  357: #single { or } How to escape?
1.229     sakharuk  358:     }
1.272     albertel  359:     return $string;
1.188     sakharuk  360: }
                    361: 
1.101     albertel  362: sub inner_xmlparse {
1.394     albertel  363:   my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
1.101     albertel  364:   my $finaloutput = '';
                    365:   my $result;
                    366:   my $token;
1.258     albertel  367:   my $dontpop=0;
1.389     albertel  368:   my $startredirection = $Apache::lonxml::redirection;
1.101     albertel  369:   while ( $#$pars > -1 ) {
                    370:     while ($token = $$pars['-1']->get_token) {
1.261     albertel  371:       if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101     albertel  372: 	if ($metamode<1) {
1.190     albertel  373: 	    my $text=$token->[1];
1.193     albertel  374: 	    if ($token->[0] eq 'C' && $target eq 'tex') {
1.239     sakharuk  375: 		$text = '';
                    376: #		$text = '%'.$text."\n";
1.182     sakharuk  377: 	    }
1.190     albertel  378: 	    $result.=$text;
1.101     albertel  379: 	}
1.261     albertel  380:       } elsif (($token->[0] eq 'D')) {
                    381: 	if ($metamode<1 && $target eq 'web') {
                    382: 	    my $text=$token->[1];
                    383: 	    $result.=$text;
                    384: 	}
1.101     albertel  385:       } elsif ($token->[0] eq 'PI') {
1.261     albertel  386: 	if ($metamode<1 && $target eq 'web') {
1.101     albertel  387: 	  $result=$token->[2];
                    388: 	}
                    389:       } elsif ($token->[0] eq 'S') {
1.140     albertel  390: 	# add tag to stack
1.101     albertel  391: 	push (@$stack,$token->[1]);
                    392: 	# add parameters list to another stack
                    393: 	push (@$parstack,&parstring($token));
1.140     albertel  394: 	&increasedepth($token);
1.212     albertel  395: 	if ($Apache::lonxml::usestyle &&
                    396: 	    exists($$style_for_target{$token->[1]})) {
                    397: 	    $Apache::lonxml::usestyle=0;
                    398: 	    my $string=$$style_for_target{$token->[1]}.
                    399: 	      '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
                    400: 	    &Apache::lonxml::newparser($pars,\$string);
1.257     albertel  401: 	    $Apache::lonxml::style_values=$$parstack[-1];
1.259     albertel  402: 	    $Apache::lonxml::style_end_values=$$parstack[-1];
1.101     albertel  403: 	} else {
                    404: 	  $result = &callsub("start_$token->[1]", $target, $token, $stack,
                    405: 			     $parstack, $pars, $safeeval, $style_for_target);
1.140     albertel  406: 	}
1.101     albertel  407:       } elsif ($token->[0] eq 'E') {
1.212     albertel  408: 	if ($Apache::lonxml::usestyle &&
                    409: 	    exists($$style_for_target{'/'."$token->[1]"})) {
                    410: 	    $Apache::lonxml::usestyle=0;
                    411: 	    my $string=$$style_for_target{'/'.$token->[1]}.
1.258     albertel  412: 	      '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212     albertel  413: 	    &Apache::lonxml::newparser($pars,\$string);
1.259     albertel  414: 	    $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
                    415: 	    $Apache::lonxml::style_end_values='';
1.258     albertel  416: 	    $dontpop=1;
1.101     albertel  417: 	} else {
1.258     albertel  418: 	    #clear out any tags that didn't end
                    419: 	    while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
                    420: 		my $lasttag=$$stack[-1];
1.317     albertel  421: 		if ($token->[1] =~ /^\Q$lasttag\E$/i) {
1.483     bisitz    422: 		    &Apache::lonxml::warning(&mt('Using tag [_1] on line [_2] as end tag to [_3]','&lt;/'.$token->[1].'&gt;','.$token->[3].','&lt;'.$$stack[-1].'&gt;'));
1.258     albertel  423: 		    last;
                    424: 		} else {
1.483     bisitz    425:                     &Apache::lonxml::warning(&mt('Found tag [_1] on line [_2] when looking for [_3] in file.','&lt;/'.$token->[1].'&gt;',$token->[3],'&lt;/'.$$stack[-1].'&gt;'));
1.258     albertel  426: 		    &end_tag($stack,$parstack,$token);
                    427: 		}
                    428: 	    }
                    429: 	    $result = &callsub("end_$token->[1]", $target, $token, $stack,
                    430: 			       $parstack, $pars,$safeeval, $style_for_target);
1.101     albertel  431: 	}
                    432:       } else {
                    433: 	&Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
                    434:       }
                    435:       #evaluate variable refs in result
1.282     albertel  436:       if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257     albertel  437: 	  my $extras;
                    438: 	  if (!$Apache::lonxml::usestyle) {
                    439: 	      $extras=$Apache::lonxml::style_values;
                    440: 	  }
1.488     raeburn   441: 	  if ( $#$parstack > -1 ) {
                    442: 	      $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
                    443: 	  } else {
                    444: 	      $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.487     raeburn   445:           }
1.163     albertel  446:       }
1.282     albertel  447:       $Apache::lonxml::post_evaluate=1;
                    448: 
1.190     albertel  449:       if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249     albertel  450: 	  #Style file definitions should be correct
1.250     albertel  451: 	  if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311     albertel  452: 	      $result=&latex_special_symbols($result);
1.249     albertel  453: 	  }
1.190     albertel  454:       }
                    455: 
1.169     albertel  456:       if ($Apache::lonxml::redirection) {
                    457: 	$Apache::lonxml::outputstack['-1'] .= $result;
                    458:       } else {
                    459: 	$finaloutput.=$result;
                    460:       }
                    461:       $result = '';
                    462: 
1.258     albertel  463:       if ($token->[0] eq 'E' && !$dontpop) {
1.101     albertel  464: 	&end_tag($stack,$parstack,$token);
                    465:       }
1.258     albertel  466:       $dontpop=0;
1.224     albertel  467:     }	
1.212     albertel  468:     if ($#$pars > -1) {
                    469: 	pop @$pars;
                    470: 	pop @Apache::lonxml::pwd;
                    471:     }
1.101     albertel  472:   }
                    473: 
                    474:   # if ($target eq 'meta') {
                    475:   #   $finaloutput.=&endredirection;
                    476:   # }
                    477: 
1.394     albertel  478:   if ( $start && $target eq 'grade') { &endredirection(); }
1.389     albertel  479:   if ( $Apache::lonxml::redirection > $startredirection) {
                    480:       while ($Apache::lonxml::redirection > $startredirection) {
                    481: 	  $finaloutput .= &endredirection();
1.387     albertel  482:       }
                    483:   }
1.101     albertel  484:   if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
                    485:     $finaloutput=&afterburn($finaloutput);
1.509     www       486:   }
                    487:   if ($target eq 'modified') {
                    488: # if modfied, handle startpart and endpart
                    489:      $finaloutput=~s/\<startpartmarker[^\>]*\>(.*)\<endpartmarker[^\>]*\>/<part>$1<\/part>/gs;
1.216     sakharuk  490:   }	    
1.101     albertel  491:   return $finaloutput;
                    492: }
1.67      www       493: 
1.318     matthew   494: ## 
                    495: ## Looks to see if there is a subroutine defined for this tag.  If so, call it,
                    496: ## otherwise do not call it as we do not know what it is.
                    497: ##
1.7       albertel  498: sub callsub {
1.84      albertel  499:   my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7       albertel  500:   my $currentstring='';
1.72      albertel  501:   my $nodefault;
1.7       albertel  502:   {
1.59      albertel  503:     my $sub1;
1.7       albertel  504:     no strict 'refs';
1.68      www       505:     my $tag=$token->[1];
1.236     www       506: # get utterly rid of extended html tags
                    507:     if ($tag=~/^x\-/i) { return ''; }
1.141     albertel  508:     my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68      www       509:     if (!$space) {
1.141     albertel  510:      	$tag=~tr/A-Z/a-z/;
1.68      www       511: 	$sub=~tr/A-Z/a-z/;
1.141     albertel  512: 	$space=$Apache::lonxml::alltags{$tag}[-1]
1.68      www       513:     }
1.97      albertel  514: 
                    515:     my $deleted=0;
                    516:     if (($token->[0] eq 'S') && ($target eq 'modified')) {
                    517:       $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
                    518: 					     $parstack,$parser,$safeeval,
                    519: 					     $style);
                    520:     }
                    521:     if (!$deleted) {
                    522:       if ($space) {
1.220     albertel  523: 	#&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97      albertel  524: 	$sub1="$space\:\:$sub";
                    525: 	($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
                    526: 					     $parstack,$parser,$safeeval,
                    527: 					     $style);
                    528:       } else {
1.318     matthew   529:           if ($target eq 'tex') {
                    530:               # throw away tag name
                    531:               return '';
                    532:           }
1.220     albertel  533: 	#&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97      albertel  534: 	if ($metamode <1) {
                    535: 	  if (defined($token->[4]) && ($metamode < 1)) {
                    536: 	    $currentstring = $token->[4];
                    537: 	  } else {
                    538: 	    $currentstring = $token->[2];
                    539: 	  }
1.62      sakharuk  540: 	}
1.7       albertel  541:       }
1.97      albertel  542:       #    &Apache::lonxml::debug("nodefalt:$nodefault:");
                    543:       if ($currentstring eq '' && $nodefault eq '') {
                    544: 	if ($target eq 'edit') {
1.220     albertel  545: 	  #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97      albertel  546: 	  if ($token->[0] eq 'S') {
                    547: 	    $currentstring = &Apache::edit::tag_start($target,$token);
                    548: 	  } elsif ($token->[0] eq 'E') {
                    549: 	    $currentstring = &Apache::edit::tag_end($target,$token);
                    550: 	  }
1.441     albertel  551: 	}
                    552:       }
                    553:       if ($target eq 'modified' && $nodefault eq '') {
                    554: 	  if ($currentstring eq '') {
                    555: 	      if ($token->[0] eq 'S') {
                    556: 		  $currentstring = $token->[4];
                    557: 	      } elsif ($token->[0] eq 'E') {
                    558: 		  $currentstring = $token->[2];
                    559: 	      } else {
                    560: 		  $currentstring = $token->[2];
                    561: 	      }
                    562: 	  }
1.97      albertel  563: 	  if ($token->[0] eq 'S') {
1.447     albertel  564: 	      $currentstring.=&Apache::edit::handle_insert();
1.210     www       565: 	  } elsif ($token->[0] eq 'E') {
1.447     albertel  566: 	      $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97      albertel  567: 	  }
1.72      albertel  568:       }
1.7       albertel  569:     }
                    570:     use strict 'refs';
                    571:   }
                    572:   return $currentstring;
1.82      ng        573: }
                    574: 
1.465     albertel  575: {
                    576:     my %state;
                    577: 
                    578:     sub init_state {
                    579: 	undef(%state);
                    580:     }
                    581:     
                    582:     sub set_state {
                    583: 	my ($key,$value) = @_;
                    584: 	$state{$key} = $value;
                    585: 	return $value;
                    586:     }
                    587:     sub get_state {
                    588: 	my ($key) = @_;
                    589: 	return $state{$key};
                    590:     }
                    591: }
                    592: 
1.96      albertel  593: sub setup_globals {
1.172     albertel  594:   my ($request,$target)=@_;
                    595:   $Apache::lonxml::request=$request;
1.205     www       596:   $errorcount=0;
                    597:   $warningcount=0;
1.490     www       598:   $Apache::lonxml::internal_error=0;
1.207     albertel  599:   $Apache::lonxml::default_homework_loaded=0;
1.212     albertel  600:   $Apache::lonxml::usestyle=1;
1.204     albertel  601:   &init_counter();
1.462     foxr      602:   &clear_bubble_lines_for_part();
1.465     albertel  603:   &init_state();
1.469     albertel  604:   &set_state('target',$target);
1.101     albertel  605:   @Apache::lonxml::pwd=();
1.124     albertel  606:   @Apache::lonxml::extlinks=();
1.448     albertel  607:   @script_var_displays=();
1.281     albertel  608:   @Apache::lonxml::ssi_info=();
1.282     albertel  609:   $Apache::lonxml::post_evaluate=1;
1.295     albertel  610:   $Apache::lonxml::warnings_error_header='';
1.397     albertel  611:   $Apache::lonxml::substitute_LaTeX_symbols = 1;
1.96      albertel  612:   if ($target eq 'meta') {
                    613:     $Apache::lonxml::redirection = 0;
                    614:     $Apache::lonxml::metamode = 1;
                    615:     $Apache::lonxml::evaluate = 1;
                    616:     $Apache::lonxml::import = 0;
1.129     albertel  617:   } elsif ($target eq 'answer') {
                    618:     $Apache::lonxml::redirection = 0;
                    619:     $Apache::lonxml::metamode = 1;
                    620:     $Apache::lonxml::evaluate = 1;
                    621:     $Apache::lonxml::import = 1;
1.96      albertel  622:   } elsif ($target eq 'grade') {
1.387     albertel  623:     &startredirection(); #ended in inner_xmlparse on exit
1.96      albertel  624:     $Apache::lonxml::metamode = 0;
                    625:     $Apache::lonxml::evaluate = 1;
                    626:     $Apache::lonxml::import = 1;
                    627:   } elsif ($target eq 'modified') {
                    628:     $Apache::lonxml::redirection = 0;
                    629:     $Apache::lonxml::metamode = 0;
                    630:     $Apache::lonxml::evaluate = 0;
                    631:     $Apache::lonxml::import = 0;
                    632:   } elsif ($target eq 'edit') {
                    633:     $Apache::lonxml::redirection = 0;
                    634:     $Apache::lonxml::metamode = 0;
                    635:     $Apache::lonxml::evaluate = 0;
                    636:     $Apache::lonxml::import = 0;
1.163     albertel  637:   } elsif ($target eq 'analyze') {
                    638:     $Apache::lonxml::redirection = 0;
                    639:     $Apache::lonxml::metamode = 0;
                    640:     $Apache::lonxml::evaluate = 1;
                    641:     $Apache::lonxml::import = 1;
1.96      albertel  642:   } else {
                    643:     $Apache::lonxml::redirection = 0;
                    644:     $Apache::lonxml::metamode = 0;
                    645:     $Apache::lonxml::evaluate = 1;
                    646:     $Apache::lonxml::import = 1;
                    647:   }
                    648: }
                    649: 
1.82      ng        650: sub init_safespace {
                    651:   my ($target,$safeeval,$safehole,$safeinit) = @_;
1.511     foxr      652:   $safeeval->reval('use Math::Complex;');
                    653:   $safeeval->reval('use LaTeX::Table;');
1.393     albertel  654:   $safeeval->deny_only(':dangerous');
1.383     albertel  655:   $safeeval->permit_only(":default");
1.82      ng        656:   $safeeval->permit("entereval");
                    657:   $safeeval->permit(":base_math");
                    658:   $safeeval->permit("sort");
1.286     albertel  659:   $safeeval->permit("time");
1.480     www       660:   $safeeval->permit("caller");
1.371     albertel  661:   $safeeval->deny("rand");
                    662:   $safeeval->deny("srand");
1.82      ng        663:   $safeeval->deny(":base_io");
1.102     albertel  664:   $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251     albertel  665:   $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82      ng        666:   $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324     albertel  667:   $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
                    668: 		  '&chem_standard_order');
1.369     albertel  669:   $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
1.471     bisitz    670:   $safehole->wrap(\&Apache::response::implicit_multiplication,$safeeval,'&implicit_multiplication');
1.324     albertel  671: 
1.431     www       672:   $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
1.432     www       673:   $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
1.433     albertel  674:   $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,
                    675: 		  '&maxima_cas_formula_fix');
                    676: 
1.494     www       677:   $safehole->wrap(\&Apache::lonr::r_eval,$safeeval,'&r_eval');
1.497     www       678:   $safehole->wrap(\&Apache::lonr::Rentry,$safeeval,'&Rentry');
                    679:   $safehole->wrap(\&Apache::lonr::Rarray,$safeeval,'&Rarray');
1.494     www       680:   $safehole->wrap(\&Apache::lonr::r_check,$safeeval,'&r_check');
                    681:   $safehole->wrap(\&Apache::lonr::r_cas_formula_fix,$safeeval,
                    682:                   '&r_cas_formula_fix');
                    683:  
1.433     albertel  684:   $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval,
                    685: 		  '&capa_formula_fix');
1.431     www       686: 
1.480     www       687:   $safehole->wrap(\&Apache::lonlocal::locallocaltime,$safeeval,
                    688:                   '&locallocaltime');
                    689: 
1.82      ng        690:   $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
                    691:   $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
                    692:   $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
                    693:   $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
                    694:   $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
                    695:   $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
                    696:   $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
                    697:   $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
                    698:   $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
                    699:   $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
                    700:   $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
                    701:   $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
                    702:   $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
                    703:   $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
                    704:   $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
                    705:   $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
                    706:   $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
                    707:   $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
                    708:   $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215     albertel  709:   
                    710:   $safehole->wrap(\&Math::Cephes::bdtr  ,$safeeval,'&bdtr'  );
                    711:   $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
                    712:   $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
                    713:   $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
                    714:   $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
                    715:   $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
                    716:   $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
                    717:   $safehole->wrap(\&Math::Cephes::fdtr  ,$safeeval,'&fdtr'  );
                    718:   $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
                    719:   $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
                    720:   $safehole->wrap(\&Math::Cephes::gdtr  ,$safeeval,'&gdtr'  );
                    721:   $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
                    722:   $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
                    723:   $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
                    724:   $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
                    725:   $safehole->wrap(\&Math::Cephes::ndtr  ,$safeeval,'&ndtr'  );
                    726:   $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
                    727:   $safehole->wrap(\&Math::Cephes::pdtr  ,$safeeval,'&pdtr'  );
                    728:   $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
                    729:   $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
                    730:   $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
                    731:   $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
                    732: 
1.383     albertel  733:   $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
                    734:   $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
                    735: 		  '&Math::Cephes::Matrix::new');
                    736:   $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
                    737: 		  '&Math::Cephes::Matrix::coef');
                    738:   $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
                    739: 		  '&Math::Cephes::Matrix::clr');
                    740:   $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
                    741: 		  '&Math::Cephes::Matrix::add');
                    742:   $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
                    743: 		  '&Math::Cephes::Matrix::sub');
                    744:   $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
                    745: 		  '&Math::Cephes::Matrix::mul');
                    746:   $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
                    747: 		  '&Math::Cephes::Matrix::div');
                    748:   $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
                    749: 		  '&Math::Cephes::Matrix::inv');
                    750:   $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
                    751: 		  '&Math::Cephes::Matrix::transp');
                    752:   $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
                    753: 		  '&Math::Cephes::Matrix::simq');
                    754:   $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
                    755: 		  '&Math::Cephes::Matrix::mat_to_vec');
                    756:   $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
                    757: 		  '&Math::Cephes::Matrix::vec_to_mat');
                    758:   $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
                    759: 		  '&Math::Cephes::Matrix::check');
                    760:   $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
                    761: 		  '&Math::Cephes::Matrix::check');
                    762: 
1.215     albertel  763: #  $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
                    764: #  $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
                    765: #  $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
                    766: #  $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
                    767: #  $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
                    768: #  $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
                    769: 
1.91      ng        770:   $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
                    771:   $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
                    772:   $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
                    773:   $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
                    774:   $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
                    775:   $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
                    776:   $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
                    777:   $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
                    778:   $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
                    779:   $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
                    780:   $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93      ng        781:   $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91      ng        782:   $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
                    783:   $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
                    784:   $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
                    785:   $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
                    786:   $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
                    787:   $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
                    788:   $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
                    789:   $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
                    790:   $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.458     albertel  791:   $safehole->wrap(\&Apache::loncommon::languages,$safeeval,'&languages');
1.305     albertel  792:   $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311     albertel  793:   $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.420     albertel  794:   $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
                    795:   $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
1.322     albertel  796:   $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.521     www       797:   $safehole->wrap(\&Apache::functionplotresponse::fpr_val,$safeeval,'&fpr_val');
1.520     www       798:   $safehole->wrap(\&Apache::functionplotresponse::fpr_f,$safeeval,'&fpr_f');
                    799:   $safehole->wrap(\&Apache::functionplotresponse::fpr_dfdx,$safeeval,'&fpr_dfdx');
                    800:   $safehole->wrap(\&Apache::functionplotresponse::fpr_d2fdx2,$safeeval,'&fpr_d2fdx2');
1.524     www       801:   $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorcoords,$safeeval,'&fpr_vectorcoords');
                    802:   $safehole->wrap(\&Apache::functionplotresponse::fpr_objectcoords,$safeeval,'&fpr_objectcoords');
                    803:   $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorlength,$safeeval,'&fpr_vectorlength');
                    804:   $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorangle,$safeeval,'&fpr_vectorangle');
1.520     www       805: 
1.430     albertel  806: #  use Data::Dumper;
                    807: #  $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
1.82      ng        808: #need to inspect this class of ops
                    809: # $safeeval->deny(":base_orig");
1.331     albertel  810:   $safeeval->permit("require");
1.91      ng        811:   $safeinit .= ';$external::target="'.$target.'";';
1.82      ng        812:   &Apache::run::run($safeinit,$safeeval);
1.373     albertel  813:   &initialize_rndseed($safeeval);
                    814: }
1.303     albertel  815: 
1.393     albertel  816: sub clean_safespace {
                    817:     my ($safeeval) = @_;
                    818:     delete_package_recurse($safeeval->{Root});
                    819: }
                    820: 
                    821: sub delete_package_recurse {
                    822:      my ($package) = @_;
                    823:      my @subp;
                    824:      {
                    825: 	 no strict 'refs';
                    826: 	 while (my ($key,$val) = each(%{*{"$package\::"}})) {
                    827: 	     if (!defined($val)) { next; }
                    828: 	     local (*ENTRY) = $val;
                    829: 	     if (defined *ENTRY{HASH} && $key =~ /::$/ &&
                    830: 		 $key ne "main::" && $key ne "<none>::")
                    831: 	     {
                    832: 		 my ($p) = $package ne "main" ? "$package\::" : "";
                    833: 		 ($p .= $key) =~ s/::$//;
                    834: 		 push(@subp,$p);
                    835: 	     }
                    836: 	 }
                    837:      }
                    838:      foreach my $p (@subp) {
                    839: 	 delete_package_recurse($p);
                    840:      }
                    841:      Symbol::delete_package($package);
                    842: }
                    843: 
1.373     albertel  844: sub initialize_rndseed {
                    845:     my ($safeeval)=@_;
                    846:     my $rndseed;
1.423     albertel  847:     my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.373     albertel  848:     $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
                    849:     my $safeinit = '$external::randomseed="'.$rndseed.'";';
                    850:     &Apache::lonxml::debug("Setting rndseed to $rndseed");
                    851:     &Apache::run::run($safeinit,$safeeval);
1.207     albertel  852: }
                    853: 
                    854: sub default_homework_load {
                    855:     my ($safeeval)=@_;
                    856:     &Apache::lonxml::debug('Loading default_homework');
1.522     raeburn   857:     my $default=&Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonIncludes'}.
                    858:                                          '/default_homework.lcpm');
1.241     albertel  859:     if ($default eq -1) {
1.207     albertel  860: 	&Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
                    861:     } else {
                    862: 	&Apache::run::run($default,$safeeval);
                    863: 	$Apache::lonxml::default_homework_loaded=1;
                    864:     }
1.17      albertel  865: }
                    866: 
1.358     albertel  867: {
                    868:     my $alarm_depth;
                    869:     sub init_alarm {
                    870: 	alarm(0);
                    871: 	$alarm_depth=0;
                    872:     }
                    873: 
                    874:     sub start_alarm {
                    875: 	if ($alarm_depth<1) {
                    876: 	    my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
                    877: 	    if ($old) {
                    878: 		&Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
                    879: 	    }
                    880: 	}
                    881: 	$alarm_depth++;
                    882:     }
                    883: 
                    884:     sub end_alarm {
                    885: 	$alarm_depth--;
                    886: 	if ($alarm_depth<1) { alarm(0); }
                    887:     }
                    888: }
1.328     albertel  889: my $metamode_was;
1.55      albertel  890: sub startredirection {
1.328     albertel  891:     if (!$Apache::lonxml::redirection) {
                    892: 	$metamode_was=$Apache::lonxml::metamode;
                    893:     }
                    894:     $Apache::lonxml::metamode=0;
                    895:     $Apache::lonxml::redirection++;
                    896:     push (@Apache::lonxml::outputstack, '');
1.55      albertel  897: }
                    898: 
                    899: sub endredirection {
1.328     albertel  900:     if (!$Apache::lonxml::redirection) {
1.380     www       901: 	&Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
1.328     albertel  902: 	return '';
                    903:     }
                    904:     $Apache::lonxml::redirection--;
                    905:     if (!$Apache::lonxml::redirection) {
                    906: 	$Apache::lonxml::metamode=$metamode_was;
                    907:     }
                    908:     pop @Apache::lonxml::outputstack;
1.97      albertel  909: }
1.459     albertel  910: sub in_redirection {
                    911:     return ($Apache::lonxml::redirection > 0)
                    912: }
1.97      albertel  913: 
                    914: sub end_tag {
                    915:   my ($tagstack,$parstack,$token)=@_;
                    916:   pop(@$tagstack);
                    917:   pop(@$parstack);
                    918:   &decreasedepth($token);
1.55      albertel  919: }
                    920: 
1.17      albertel  921: sub initdepth {
                    922:   @Apache::lonxml::depthcounter=();
1.439     albertel  923:   undef($Apache::lonxml::last_depth_count);
1.17      albertel  924: }
                    925: 
1.438     albertel  926: 
1.339     albertel  927: my @timers;
                    928: my $lasttime;
1.438     albertel  929: # @Apache::lonxml::depthcounter -> count of tags that exist so
                    930: #                                  far at each level
1.439     albertel  931: # $Apache::lonxml::last_depth_count -> when ascending, need to
                    932: # remember the count for the level below the current level (for
                    933: # example going from 1_2 -> 1 -> 1_3 need to remember the 2 )
1.438     albertel  934: 
1.17      albertel  935: sub increasedepth {
1.19      albertel  936:   my ($token) = @_;
1.439     albertel  937:   push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1);
                    938:   undef($Apache::lonxml::last_depth_count);
1.340     albertel  939:   my $time;
                    940:   if ($Apache::lonxml::debug eq "1") {
                    941:       push(@timers,[&gettimeofday()]);
                    942:       $time=&tv_interval($lasttime);
                    943:       $lasttime=[&gettimeofday()];
                    944:   }
1.439     albertel  945:   my $spacing='  'x($#Apache::lonxml::depthcounter);
1.438     albertel  946:   $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
1.439     albertel  947: #  &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time");
1.54      albertel  948: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17      albertel  949: }
                    950: 
                    951: sub decreasedepth {
1.19      albertel  952:   my ($token) = @_;
1.439     albertel  953:   if (  $#Apache::lonxml::depthcounter == -1) {
                    954:       &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43      albertel  955:   }
1.439     albertel  956:   $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter);
                    957: 
1.340     albertel  958:   my ($timer,$time);
                    959:   if ($Apache::lonxml::debug eq "1") {
                    960:       $timer=pop(@timers);
                    961:       $time=&tv_interval($lasttime);
                    962:       $lasttime=[&gettimeofday()];
                    963:   }
1.439     albertel  964:   my $spacing='  'x($#Apache::lonxml::depthcounter);
                    965:   $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter);
                    966: #  &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer));
1.54      albertel  967: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1       sakharuk  968: }
1.19      albertel  969: 
1.399     albertel  970: sub get_id {
                    971:     my ($parstack,$safeeval)=@_;
                    972:     my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1.449     albertel  973:     if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\d\s[:punct:]])/) {
1.498     bisitz    974: 	&error(&mt('ID [_1] contains invalid characters. IDs are only allowed to contain letters, numbers, spaces and -','"<tt>'.$id.'</tt>"'));
1.399     albertel  975:     }
                    976:     if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
                    977:     return $id;
                    978: }
                    979: 
1.180     albertel  980: sub get_all_text_unbalanced {
1.190     albertel  981: #there is a copy of this in lonpublisher.pm
1.326     albertel  982:     my($tag,$pars)= @_;
                    983:     my $token;
                    984:     my $result='';
                    985:     $tag='<'.$tag.'>';
                    986:     while ($token = $$pars[-1]->get_token) {
                    987: 	if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.386     albertel  988: 	    if ($token->[0] eq 'T' && $token->[2]) {
1.382     albertel  989: 		$result.='<![CDATA['.$token->[1].']]>';
                    990: 	    } else {
                    991: 		$result.=$token->[1];
                    992: 	    }
1.326     albertel  993: 	} elsif ($token->[0] eq 'PI') {
                    994: 	    $result.=$token->[2];
                    995: 	} elsif ($token->[0] eq 'S') {
                    996: 	    $result.=$token->[4];
                    997: 	} elsif ($token->[0] eq 'E')  {
                    998: 	    $result.=$token->[2];
                    999: 	}
                   1000: 	if ($result =~ /\Q$tag\E/is) {
                   1001: 	    ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
                   1002: 	    #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
                   1003: 	    #&Apache::lonxml::debug('Result is :'.$1);
                   1004: 	    $redo=$tag.$redo;
                   1005: 	    &Apache::lonxml::newparser($pars,\$redo);
                   1006: 	    last;
                   1007: 	}
                   1008:     }
                   1009:     return $result
1.462     foxr     1010: 
1.204     albertel 1011: }
                   1012: 
1.462     foxr     1013: #########################################################################
                   1014: #                                                                       #
                   1015: #           bubble line counter management                              #
                   1016: #                                                                       #
                   1017: #########################################################################
                   1018: 
1.447     albertel 1019: =pod
                   1020: 
                   1021: For bubble grading mode and exam bubble printing mode, the tracking of
                   1022: the current 'bubble line number' is stored in the %env element
                   1023: 'form.counter', and is modifed and handled by the following routines.
                   1024: 
                   1025: The value of it is stored in $Apache:lonxml::counter when live and
                   1026: stored back to env after done.
                   1027: 
1.522     raeburn  1028: =item &increment_counter($increment, $part_response);
1.447     albertel 1029: 
                   1030: Increments the internal counter environment variable a specified amount
                   1031: 
                   1032: Optional Arguments:
                   1033:   $increment - amount to increment by (defaults to 1)
1.462     foxr     1034:                Also 1 if the value is negative or zero.
1.467     foxr     1035:   $part_response - A concatenation of the part and response id
                   1036:                    identifying exactly what is being 'answered'.
                   1037: 
1.447     albertel 1038: 
                   1039: =cut
                   1040: 
1.204     albertel 1041: sub increment_counter {
1.467     foxr     1042:     my ($increment, $part_response) = @_;
1.481     raeburn  1043:     if ($env{'form.grade_noincrement'}) { return; }
1.462     foxr     1044:     if (!defined($increment) || $increment le 0) {
                   1045: 	$increment = 1;
                   1046:     }
                   1047:     $Apache::lonxml::counter += $increment;
                   1048: 
1.466     foxr     1049:     # If the caller supplied the response_id parameter, 
1.462     foxr     1050:     # Maintain its counter.. creating if necessary.
                   1051: 
1.470     albertel 1052:     if (defined($part_response)) {
1.467     foxr     1053: 	if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
                   1054: 	    $Apache::lonxml::counters_per_part{$part_response} = 0;
1.462     foxr     1055: 	}
1.467     foxr     1056: 	$Apache::lonxml::counters_per_part{$part_response} += $increment;
                   1057: 	my $new_value = $Apache::lonxml::counters_per_part{$part_response};
1.247     albertel 1058:     }
1.462     foxr     1059: 	
1.289     sakharuk 1060:     $Apache::lonxml::counter_changed=1;
1.204     albertel 1061: }
                   1062: 
1.447     albertel 1063: =pod
                   1064: 
1.461     foxr     1065: =item &init_counter($increment);
1.447     albertel 1066: 
                   1067: Initialize the internal counter environment variable
                   1068: 
                   1069: =cut
                   1070: 
1.204     albertel 1071: sub init_counter {
1.391     albertel 1072:     if ($env{'request.state'} eq 'construct') {
                   1073: 	$Apache::lonxml::counter=1;
                   1074: 	$Apache::lonxml::counter_changed=1;
                   1075:     } elsif (defined($env{'form.counter'})) {
1.372     albertel 1076: 	$Apache::lonxml::counter=$env{'form.counter'};
1.247     albertel 1077: 	$Apache::lonxml::counter_changed=0;
1.237     sakharuk 1078:     } else {
1.204     albertel 1079: 	$Apache::lonxml::counter=1;
1.247     albertel 1080: 	$Apache::lonxml::counter_changed=1;
1.204     albertel 1081:     }
                   1082: }
                   1083: 
                   1084: sub store_counter {
1.474     raeburn  1085:     &Apache::lonnet::appenv({'form.counter' => $Apache::lonxml::counter});
1.401     albertel 1086:     $Apache::lonxml::counter_changed=0;
1.204     albertel 1087:     return '';
1.180     albertel 1088: }
                   1089: 
1.398     albertel 1090: {
                   1091:     my $state;
                   1092:     sub clear_problem_counter {
                   1093: 	undef($state);
                   1094: 	&Apache::lonnet::delenv('form.counter');
                   1095: 	&Apache::lonxml::init_counter();
                   1096: 	&Apache::lonxml::store_counter();
                   1097:     }
                   1098: 
                   1099:     sub remember_problem_counter {
1.422     albertel 1100: 	&Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.398     albertel 1101: 	$state = $env{'form.counter'};
                   1102:     }
                   1103: 
                   1104:     sub restore_problem_counter {
                   1105: 	if (defined($state)) {
1.474     raeburn  1106: 	    &Apache::lonnet::appenv({'form.counter' => $state});
1.398     albertel 1107: 	}
                   1108:     }
1.401     albertel 1109:     sub get_problem_counter {
                   1110: 	if ($Apache::lonxml::counter_changed) { &store_counter() }
1.422     albertel 1111: 	&Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.401     albertel 1112: 	return $env{'form.counter'};
                   1113:     }
1.398     albertel 1114: }
                   1115: 
1.462     foxr     1116: =pod
                   1117: 
1.468     albertel 1118: =item  bubble_lines_for_part(part_response)
1.462     foxr     1119: 
                   1120: Returns the number of lines required to get a response for
1.467     foxr     1121: $part_response (this is just $Apache::lonxml::counters_per_part{$part_response}
1.462     foxr     1122: 
                   1123: =cut
                   1124: 
                   1125: sub bubble_lines_for_part {
1.467     foxr     1126:     my ($part_response) = @_;
1.462     foxr     1127: 
1.467     foxr     1128:     if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1.462     foxr     1129: 	return 0;
                   1130:     } else {
1.467     foxr     1131: 	return $Apache::lonxml::counters_per_part{$part_response};
1.462     foxr     1132:     }
                   1133: }
                   1134: 
                   1135: =pod
                   1136: 
                   1137: =item clear_bubble_lines_for_part
                   1138: 
                   1139: Clears the hash of bubble lines per part.  If a caller
                   1140: needs to analyze several resources this should be called between
                   1141: resources to reset the hash for each problem being analyzed.
                   1142: 
                   1143: =cut
                   1144: 
                   1145: sub clear_bubble_lines_for_part {
                   1146:     undef(%Apache::lonxml::counters_per_part);
                   1147: }
                   1148: 
                   1149: =pod
                   1150: 
1.468     albertel 1151: =item set_bubble_lines(part_response, value)
1.462     foxr     1152: 
                   1153: If there is a problem part, that for whatever reason
                   1154: requires bubble lines that are not
                   1155: the same as the counter increment, it can call this sub during
                   1156: analysis to set its hash value explicitly.
                   1157: 
                   1158: =cut
                   1159: 
                   1160: sub set_bubble_lines {
1.467     foxr     1161:     my ($part_response, $value) = @_;
1.462     foxr     1162: 
1.467     foxr     1163:     $Apache::lonxml::counters_per_part{$part_response} = $value;
1.462     foxr     1164: }
                   1165: 
                   1166: =pod
                   1167: 
                   1168: =item get_bubble_line_hash
                   1169: 
                   1170: Returns the current bubble line hash.  This is assumed to 
                   1171: be small so we return a copy
                   1172: 
                   1173: 
                   1174: =cut
                   1175: 
                   1176: sub get_bubble_line_hash {
                   1177:     return %Apache::lonxml::counters_per_part;
                   1178: }
                   1179: 
                   1180: 
                   1181: #--------------------------------------------------
                   1182: 
1.19      albertel 1183: sub get_all_text {
1.270     albertel 1184:     my($tag,$pars,$style)= @_;
                   1185:     my $gotfullstack=1;
                   1186:     if (ref($pars) ne 'ARRAY') {
                   1187: 	$gotfullstack=0;
                   1188: 	$pars=[$pars];
                   1189:     }
                   1190:     if (ref($style) ne 'HASH') {
                   1191: 	$style={};
                   1192:     }
                   1193:     my $depth=0;
                   1194:     my $token;
                   1195:     my $result='';
                   1196:     if ( $tag =~ m:^/: ) { 
                   1197: 	my $tag=substr($tag,1); 
                   1198: 	#&Apache::lonxml::debug("have:$tag:");
                   1199: 	my $top_empty=0;
                   1200: 	while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
                   1201: 	    while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
                   1202: 		#&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
                   1203: 		if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.382     albertel 1204: 		    if ($token->[2]) {
                   1205: 			$result.='<![CDATA['.$token->[1].']]>';
                   1206: 		    } else {
                   1207: 			$result.=$token->[1];
                   1208: 		    }
1.270     albertel 1209: 		} elsif ($token->[0] eq 'PI') {
                   1210: 		    $result.=$token->[2];
                   1211: 		} elsif ($token->[0] eq 'S') {
1.316     albertel 1212: 		    if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
                   1213: 		    if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
                   1214: 		    if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270     albertel 1215: 		    $result.=$token->[4];
                   1216: 		} elsif ($token->[0] eq 'E')  {
1.316     albertel 1217: 		    if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270     albertel 1218: 		    #skip sending back the last end tag
1.283     albertel 1219: 		    if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270     albertel 1220: 			my $string=
                   1221: 			    '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
                   1222: 				$$style{'/'.$token->[1]}.
                   1223: 				    $token->[2].
                   1224: 					'<LONCAPA_INTERNAL_TURN_STYLE_ON />';
                   1225: 			&Apache::lonxml::newparser($pars,\$string);
                   1226: 			#&Apache::lonxml::debug("reParsing $string");
                   1227: 			next;
                   1228: 		    }
                   1229: 		    if ($depth > -1) {
                   1230: 			$result.=$token->[2];
                   1231: 		    } else {
                   1232: 			$$pars[-1]->unget_token($token);
                   1233: 		    }
                   1234: 		}
                   1235: 	    }
                   1236: 	    if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
                   1237: 	    if (($depth >=0) && ($#$pars > 0) ) {
                   1238: 		pop(@$pars);
                   1239: 		pop(@Apache::lonxml::pwd);
                   1240: 	    }
                   1241: 	}
                   1242: 	if ($top_empty && $depth >= 0) {
                   1243: 	    #never found the end tag ran out of text, throw error send back blank
                   1244: 	    &error('Never found end tag for &lt;'.$tag.
                   1245: 		   '&gt; current string <pre>'.
1.314     albertel 1246: 		   &HTML::Entities::encode($result,'<>&"').
1.270     albertel 1247: 		   '</pre>');
                   1248: 	    if ($gotfullstack) {
                   1249: 		my $newstring='</'.$tag.'>'.$result;
                   1250: 		&Apache::lonxml::newparser($pars,\$newstring);
                   1251: 	    }
                   1252: 	    $result='';
                   1253: 	}
                   1254:     } else {
                   1255: 	while ($#$pars > -1) {
                   1256: 	    while ($token = $$pars[-1]->get_token) {
                   1257: 		#&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
                   1258: 		if (($token->[0] eq 'T')||($token->[0] eq 'C')||
                   1259: 		    ($token->[0] eq 'D')) {
1.382     albertel 1260: 		    if ($token->[2]) {
                   1261: 			$result.='<![CDATA['.$token->[1].']]>';
                   1262: 		    } else {
                   1263: 			$result.=$token->[1];
                   1264: 		    }
1.270     albertel 1265: 		} elsif ($token->[0] eq 'PI') {
                   1266: 		    $result.=$token->[2];
                   1267: 		} elsif ($token->[0] eq 'S') {
1.316     albertel 1268: 		    if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270     albertel 1269: 			$$pars[-1]->unget_token($token); last;
                   1270: 		    } else {
                   1271: 			$result.=$token->[4];
                   1272: 		    }
1.316     albertel 1273: 		    if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
                   1274: 		    if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270     albertel 1275: 		} elsif ($token->[0] eq 'E')  {
                   1276: 		    $result.=$token->[2];
                   1277: 		}
                   1278: 	    }
                   1279: 	    if (($#$pars > 0) ) {
                   1280: 		pop(@$pars);
                   1281: 		pop(@Apache::lonxml::pwd);
                   1282: 	    } else { last; }
                   1283: 	}
                   1284:     }
                   1285:     #&Apache::lonxml::debug("Exit:$result:");
                   1286:     return $result
1.19      albertel 1287: }
                   1288: 
1.23      albertel 1289: sub newparser {
                   1290:   my ($parser,$contentref,$dir) = @_;
1.167     albertel 1291:   push (@$parser,HTML::LCParser->new($contentref));
1.365     albertel 1292:   $$parser[-1]->xml_mode(1);
                   1293:   $$parser[-1]->marked_sections(1);
1.23      albertel 1294:   if ( $dir eq '' ) {
                   1295:     push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
                   1296:   } else {
                   1297:     push (@Apache::lonxml::pwd, $dir);
                   1298:   } 
                   1299: }
1.1       sakharuk 1300: 
1.8       albertel 1301: sub parstring {
1.417     albertel 1302:     my ($token) = @_;
                   1303:     my (@vars,@values);
                   1304:     foreach my $attr (@{$token->[3]}) {
                   1305: 	if ($attr!~/\W/) {
                   1306: 	    my $val=$token->[2]->{$attr};
                   1307: 	    $val =~ s/([\%\@\\\"\'])/\\$1/g;
                   1308: 	    $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
                   1309: 	    $val =~ s/(\$)$/\\$1/;
                   1310: 	    #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
                   1311: 	    push(@vars,"\$$attr");
                   1312: 	    push(@values,"\"$val\"");
                   1313: 	}
                   1314:     }
                   1315:     my $var_init = 
                   1316: 	(@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
                   1317: 	        : '';
                   1318:     return $var_init;
1.8       albertel 1319: }
1.22      albertel 1320: 
1.384     albertel 1321: sub extlink {
                   1322:     my ($res,$exact)=@_;
                   1323:     if (!$exact) {
                   1324: 	$res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
                   1325:     }
                   1326:     push(@Apache::lonxml::extlinks,$res)	 
                   1327: }
                   1328: 
1.34      www      1329: sub writeallows {
1.126     www      1330:     unless ($#extlinks>=0) { return; }
1.377     albertel 1331:     my $thisurl = &Apache::lonnet::clutter(shift);
1.372     albertel 1332:     if ($env{'httpref.'.$thisurl}) {
                   1333: 	$thisurl=$env{'httpref.'.$thisurl};
1.111     www      1334:     }
1.34      www      1335:     my $thisdir=$thisurl;
                   1336:     $thisdir=~s/\/[^\/]+$//;
                   1337:     my %httpref=();
1.142     albertel 1338:     foreach (@extlinks) {
1.34      www      1339:        $httpref{'httpref.'.
1.444     albertel 1340:  	        &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl;
1.142     albertel 1341:     }
1.126     www      1342:     @extlinks=();
1.474     raeburn  1343:     &Apache::lonnet::appenv(\%httpref);
1.34      www      1344: }
                   1345: 
1.281     albertel 1346: sub register_ssi {
                   1347:     my ($url,%form)=@_;
                   1348:     push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
                   1349:     return '';
                   1350: }
                   1351: 
                   1352: sub do_registered_ssi {
                   1353:     foreach my $info (@Apache::lonxml::ssi_info) {
                   1354: 	my %form=%{ $info->{'form'}};
                   1355: 	my $url=$info->{'url'};
                   1356: 	&Apache::lonnet::ssi($url,%form);
                   1357:     }
                   1358: }
1.448     albertel 1359: 
                   1360: sub add_script_result {
                   1361:     my ($display) = @_;
                   1362:     push(@script_var_displays, $display);
                   1363: }
                   1364: 
1.66      www      1365: #
                   1366: # Afterburner handles anchors, highlights and links
                   1367: #
                   1368: sub afterburn {
                   1369:     my $result=shift;
1.154     albertel 1370:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                   1371: 					    ['highlight','anchor','link']);
1.372     albertel 1372:     if ($env{'form.highlight'}) {
                   1373:        foreach (split(/\,/,$env{'form.highlight'})) {
1.66      www      1374:            my $anchorname=$_;
                   1375: 	   my $matchthis=$anchorname;
                   1376:            $matchthis=~s/\_+/\\s\+/g;
1.317     albertel 1377:            $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142     albertel 1378:        }
1.66      www      1379:     }
1.372     albertel 1380:     if ($env{'form.link'}) {
                   1381:        foreach (split(/\,/,$env{'form.link'})) {
1.66      www      1382:            my ($anchorname,$linkurl)=split(/\>/,$_);
                   1383: 	   my $matchthis=$anchorname;
                   1384:            $matchthis=~s/\_+/\\s\+/g;
1.317     albertel 1385:            $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142     albertel 1386:        }
1.66      www      1387:     }
1.372     albertel 1388:     if ($env{'form.anchor'}) {
                   1389:         my $anchorname=$env{'form.anchor'};
1.66      www      1390: 	my $matchthis=$anchorname;
                   1391:         $matchthis=~s/\_+/\\s\+/g;
1.317     albertel 1392:         $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66      www      1393:         $result.=(<<"ENDSCRIPT");
1.226     albertel 1394: <script type="text/javascript">
1.66      www      1395:     document.location.hash='$anchorname';
                   1396: </script>
                   1397: ENDSCRIPT
                   1398:     }
                   1399:     return $result;
                   1400: }
                   1401: 
1.79      www      1402: sub storefile {
                   1403:     my ($file,$contents)=@_;
1.290     albertel 1404:     &Apache::lonnet::correct_line_ends(\$contents);
1.79      www      1405:     if (my $fh=Apache::File->new('>'.$file)) {
                   1406: 	print $fh $contents;
                   1407:         $fh->close();
1.271     www      1408:         return 1;
1.147     albertel 1409:     } else {
1.482     bisitz   1410: 	&warning(&mt('Unable to save file [_1]','<tt>'.$file.'</tt>'));
1.271     www      1411: 	return 0;
1.79      www      1412:     }
                   1413: }
                   1414: 
1.151     albertel 1415: sub createnewhtml {
1.321     www      1416:     my $title=&mt('Title of document goes here');
                   1417:     my $body=&mt('Body of document goes here');
                   1418:     my $filecontents=(<<SIMPLECONTENT);
1.78      www      1419: <html>
                   1420: <head>
1.321     www      1421: <title>$title</title>
1.78      www      1422: </head>
                   1423: <body bgcolor="#FFFFFF">
1.321     www      1424: $body
1.78      www      1425: </body>
                   1426: </html>
                   1427: SIMPLECONTENT
1.321     www      1428:     return $filecontents;
1.151     albertel 1429: }
                   1430: 
1.274     albertel 1431: sub createnewsty {
                   1432:   my $filecontents=(<<SIMPLECONTENT);
                   1433: <definetag name="">
                   1434:     <render>
                   1435:        <web></web>
                   1436:        <tex></tex>
                   1437:     </render>
                   1438: </definetag>
                   1439: SIMPLECONTENT
                   1440:   return $filecontents;
                   1441: }
                   1442: 
1.493     raeburn  1443: sub createnewjs {
                   1444:     my $filecontents=(<<SIMPLECONTENT);
                   1445: <script type="text/javascript" language="Javascript">
                   1446: 
                   1447: </script>
                   1448: SIMPLECONTENT
                   1449:     return $filecontents;
                   1450: }
                   1451: 
1.472     www      1452: sub verify_html {
                   1453:     my ($filecontents)=@_;
1.516     raeburn  1454:     my ($is_html,$is_xml);
                   1455:     if ($filecontents =~/(?:\<|\&lt\;)\?xml[^\<]*\?(?:\>|\&gt\;)/is) {
                   1456:         $is_xml = 1;
1.518     raeburn  1457:     } elsif ($filecontents =~/(?:\<|\&lt\;)html(?:\s+[^\<]+|\s*)(?:\>|\&gt\;)/is) {
1.516     raeburn  1458:         $is_html = 1;
                   1459:     }
                   1460:     unless ($is_xml || $is_html) {
                   1461:         return &mt('File does not have [_1] or [_2] starting tag','&lt;html&gt;','&lt;?xml ?&gt;');
                   1462:     }
                   1463:     if ($is_html) {
                   1464:         if ($filecontents!~/(?:\<|\&lt\;)\/html(?:\>|\&gt\;)/is) {
                   1465:             return &mt('File does not have [_1] ending tag','&lt;html&gt;');
                   1466:         }
                   1467:         if ($filecontents!~/(?:\<|\&lt\;)(?:body|frameset)[^\<]*(?:\>|\&gt\;)/is) {
                   1468:             return &mt('File does not have [_1] or [_2] starting tag','&lt;body&gt;','&lt;frameset&gt;');
                   1469:         }
                   1470:         if ($filecontents!~/(?:\<|\&lt\;)\/(?:body|frameset)[^\<]*(?:\>|\&gt\;)/is) {
                   1471:             return &mt('File does not have [_1] or [_2] ending tag','&lt;body&gt;','&lt;frameset&gt;');
                   1472:         }
1.472     www      1473:     }
                   1474:     return '';
                   1475: }
1.147     albertel 1476: 
1.478     www      1477: sub renderingoptions {
                   1478:     my %langchoices=('' => '');
                   1479:     foreach (&Apache::loncommon::languageids()) {
                   1480:         if (&Apache::loncommon::supportedlanguagecode($_)) {
                   1481:             $langchoices{&Apache::loncommon::supportedlanguagecode($_)}
                   1482:                        = &Apache::loncommon::plainlanguagedescription($_);
                   1483:         }
                   1484:     }
1.500     raeburn  1485:     my $output;
                   1486:     unless ($env{'form.forceedit'}) {
1.504     bisitz   1487:        $output .=
                   1488:            '<span class="LC_nobreak">'.
1.500     raeburn  1489:            &mt('Language:').' '.
1.504     bisitz   1490:            &Apache::loncommon::select_form(
                   1491:                $env{'form.languages'},
                   1492:                'languages',
1.510     raeburn  1493:                {&Apache::lonlocal::texthash(%langchoices)}).
1.504     bisitz   1494:            '</span>';
1.500     raeburn  1495:     }
1.504     bisitz   1496:     $output .=
                   1497:      ' <span class="LC_nobreak">'.
1.479     bisitz   1498:        &mt('Math Rendering:').' '.
1.504     bisitz   1499:        &Apache::loncommon::select_form(
                   1500:            $env{'form.texengine'},
                   1501:            'texengine',
1.510     raeburn  1502:            {&Apache::lonlocal::texthash
1.504     bisitz   1503:                (''        => '',
                   1504:                 'tth'     => 'tth (TeX to HTML)',
1.526     dseaton  1505:                 'MathJax' => 'MathJax',
                   1506:   		'jsMath'  => 'jsMath',
1.510     raeburn  1507:                 'mimetex' => 'mimetex (Convert to Images)')}).
1.504     bisitz   1508:      '</span>';
1.500     raeburn  1509:     return $output;
1.478     www      1510: }
                   1511: 
1.151     albertel 1512: sub inserteditinfo {
1.470     albertel 1513:       my ($filecontents, $filetype, $filename)=@_;
1.314     albertel 1514:       $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.274     albertel 1515:       my $xml_help = '';
1.321     www      1516:       my $initialize='';
1.452     albertel 1517:       my $textarea_id = 'filecont';
1.492     raeburn  1518:       my $dragmath_button;
1.452     albertel 1519:       my ($add_to_onload, $add_to_onresize);
1.456     albertel 1520:       $initialize=&Apache::lonhtmlcommon::spellheader();
1.514     raeburn  1521:       if (($filetype eq 'html') && (&Apache::lonhtmlcommon::htmlareabrowser())) {
1.463     albertel 1522: 	  my $lang = &Apache::lonhtmlcommon::htmlarea_lang();
1.512     raeburn  1523:           my %textarea_args = (
                   1524:                                 fullpage => 'true',
                   1525:                                 dragmath => 'math',
                   1526:                               );
1.514     raeburn  1527:           $initialize .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args); 
                   1528:       }
                   1529:       $initialize .= (<<FULLPAGE);
1.321     www      1530: <script type="text/javascript">
1.514     raeburn  1531: // <![CDATA[
1.321     www      1532:     function initDocument() {
1.463     albertel 1533: 	resize_textarea('$textarea_id','LC_aftertextarea');
1.321     www      1534:     }
1.514     raeburn  1535: // ]]>
1.321     www      1536: </script>
                   1537: FULLPAGE
1.514     raeburn  1538:       if ($filetype eq 'html') {
                   1539:           $dragmath_button = '<span id="math_filecont">'.&Apache::lonhtmlcommon::dragmath_button('filecont',1).'</span>';
                   1540:           $initialize .= "\n".&Apache::lonhtmlcommon::dragmath_js('EditMathPopup');
1.512     raeburn  1541:       }
1.456     albertel 1542:       $add_to_onload = 'initDocument();';
                   1543:       $add_to_onresize = "resize_textarea('$textarea_id','LC_aftertextarea');";
                   1544: 
                   1545:       if ($filetype eq 'html') {
1.321     www      1546: 	  $xml_help=&Apache::loncommon::helpLatexCheatsheet();
1.274     albertel 1547:       }
1.452     albertel 1548: 
1.254     albertel 1549:       my $titledisplay=&display_title();
1.512     raeburn  1550:       my $textareaclass;
1.426     banghart 1551:       my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
                   1552: 					 'vi' => 'Save and View',
1.427     banghart 1553: 					 'dv' => 'Discard Edits and View',
1.428     banghart 1554: 					 'un' => 'undo',
1.280     www      1555: 					 'ed' => 'Edit');
1.512     raeburn  1556:       my $spelllink = &Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.451     albertel 1557:       my $textarea_events = &Apache::edit::element_change_detection();
                   1558:       my $form_events     = &Apache::edit::form_change_detection();
1.491     raeburn  1559:       my $htmlerror;
                   1560:       if ($filetype eq 'html') {
                   1561:           $htmlerror=&verify_html($filecontents);
                   1562:           if ($htmlerror) {
                   1563:               $htmlerror='<span class="LC_error">'.$htmlerror.'</span>';
                   1564:           }
1.501     raeburn  1565:           if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1.515     raeburn  1566:               $textareaclass = 'class="LC_richDefaultOff"';
1.501     raeburn  1567:           }
1.472     www      1568:       }
1.78      www      1569:       my $editfooter=(<<ENDFOOTER);
1.321     www      1570: $initialize
1.78      www      1571: <a name="editsection" />
1.451     albertel 1572: <form $form_events method="post" name="xmledit">
1.470     albertel 1573:   <div class="LC_edit_problem_editxml_header">
                   1574:     <table class="LC_edit_problem_header_title"><tr><td>
                   1575:         $filename
                   1576:       </td><td align="right">
                   1577:         $xml_help
                   1578:       </td></tr>
                   1579:     </table>
                   1580:     <div class="LC_edit_problem_discards">
                   1581:       <input type="submit" name="discardview" accesskey="d" value="$lt{'dv'}" />
                   1582:       <input type="submit" name="Undo" accesskey="u" value="$lt{'un'}" />
1.513     raeburn  1583:       $htmlerror $dragmath_button
1.470     albertel 1584:     </div>
                   1585:     <div class="LC_edit_problem_saves">
                   1586:       <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
                   1587:       <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
                   1588:     </div>
                   1589:   </div>
1.513     raeburn  1590:   <textarea $textarea_events style="width:100%" cols="80" rows="44" name="filecont" id="filecont" $textareaclass>$filecontents</textarea><br />$spelllink
1.470     albertel 1591:   <div id="LC_aftertextarea">
                   1592:     <br />
                   1593:     $titledisplay
                   1594:   </div>
1.78      www      1595: </form>
1.321     www      1596: </body>
1.78      www      1597: ENDFOOTER
1.452     albertel 1598:       return ($editfooter,$add_to_onload,$add_to_onresize);;
1.78      www      1599: }
                   1600: 
1.152     albertel 1601: sub get_target {
1.372     albertel 1602:   my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
                   1603:   if ( $env{'request.state'} eq 'published') {
                   1604:     if ( defined($env{'form.grade_target'})
1.152     albertel 1605: 	 && ($viewgrades == 'F' )) {
1.372     albertel 1606:       return ($env{'form.grade_target'});
                   1607:     } elsif (defined($env{'form.grade_target'})) {
                   1608:       if (($env{'form.grade_target'} eq 'web') ||
                   1609: 	  ($env{'form.grade_target'} eq 'tex') ) {
                   1610: 	return $env{'form.grade_target'}
1.153     albertel 1611:       } else {
                   1612: 	return 'web';
                   1613:       }
1.152     albertel 1614:     } else {
                   1615:       return 'web';
                   1616:     }
1.372     albertel 1617:   } elsif ($env{'request.state'} eq 'construct') {
                   1618:     if ( defined($env{'form.grade_target'})) {
                   1619:       return ($env{'form.grade_target'});
1.152     albertel 1620:     } else {
                   1621:       return 'web';
                   1622:     }
                   1623:   } else {
                   1624:     return 'web';
                   1625:   }
                   1626: }
                   1627: 
1.24      sakharuk 1628: sub handler {
1.255     sakharuk 1629:     my $request=shift;
1.493     raeburn  1630: 
1.255     sakharuk 1631:     my $target=&get_target();
1.372     albertel 1632:     $Apache::lonxml::debug=$env{'user.debug'};
1.255     sakharuk 1633:     
1.364     albertel 1634:     &Apache::loncommon::content_type($request,'text/html');
1.255     sakharuk 1635:     &Apache::loncommon::no_cache($request);
1.372     albertel 1636:     if ($env{'request.state'} eq 'published') {
1.363     albertel 1637: 	$request->set_last_modified(&Apache::lonnet::metadata($request->uri,
                   1638: 							      'lastrevisiondate'));
                   1639:     }
1.499     raeburn  1640:     # Embedded Flash movies from Camtasia served from https will not display in IE
                   1641:     #   if XML config file has expired from cache.    
                   1642:     if ($ENV{'SERVER_PORT'} == 443) {
                   1643:         if ($request->uri =~ /\.xml$/) {
                   1644:             my ($httpbrowser,$clientbrowser) =
                   1645:                 &Apache::loncommon::decode_user_agent($request);
                   1646:             if ($clientbrowser =~ /^explorer$/i) {
                   1647:                 delete $request->headers_out->{'Cache-control'};
                   1648:                 delete $request->headers_out->{'Pragma'};
                   1649:                 my $expiration = time + 60;
                   1650:                 my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime($expiration));
                   1651:                 $request->headers_out->set("Expires" => $date);
                   1652:             }
                   1653:         }
                   1654:     }
1.255     sakharuk 1655:     $request->send_http_header;
                   1656:     
                   1657:     return OK if $request->header_only;
1.68      www      1658: 
                   1659: 
1.255     sakharuk 1660:     my $file=&Apache::lonnet::filelocation("",$request->uri);
1.502     raeburn  1661:     my ($filetype,$breadcrumbtext);
                   1662:     if ($file =~ /\.(sty|css|js|txt|tex)$/) {
1.493     raeburn  1663: 	$filetype=$1;
1.274     albertel 1664:     } else {
                   1665: 	$filetype='html';
                   1666:     }
1.502     raeburn  1667:     if ($filetype eq 'sty') {
                   1668:         $breadcrumbtext = 'Style File Editor';
                   1669:     } elsif ($filetype eq 'js') {
                   1670:         $breadcrumbtext = 'Javascript Editor';
                   1671:     } elsif ($filetype eq 'css') {
                   1672:         $breadcrumbtext = 'CSS Editor';
                   1673:     } elsif ($filetype eq 'txt') {
                   1674:         $breadcrumbtext = 'Text Editor';
                   1675:     } elsif ($filetype eq 'tex') {
                   1676:         $breadcrumbtext = 'TeX Editor';
                   1677:     } else {
                   1678:         $breadcrumbtext = 'HTML Editor';
                   1679:     }
1.493     raeburn  1680: 
1.78      www      1681: #
                   1682: # Edit action? Save file.
                   1683: #
1.428     banghart 1684:     if (!($env{'request.state'} eq 'published')) {
                   1685: 	if ($env{'form.savethisfile'} || $env{'form.viewmode'} || $env{'form.Undo'}) {
1.429     albertel 1686: 	    my $html_file=&Apache::lonnet::getfile($file);
                   1687: 	    my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1.472     www      1688:             if ($env{'form.savethisfile'}) {
                   1689:                 $env{'form.editmode'}='Edit'; #force edit mode
                   1690:             }
1.255     sakharuk 1691: 	}
                   1692:     }
                   1693:     my %mystyle;
                   1694:     my $result = '';
                   1695:     my $filecontents=&Apache::lonnet::getfile($file);
                   1696:     if ($filecontents eq -1) {
1.402     albertel 1697: 	my $start_page=&Apache::loncommon::start_page('File Error');
1.412     albertel 1698: 	my $end_page=&Apache::loncommon::end_page();
1.495     bisitz   1699:         my $errormsg='<p class="LC_error">'
                   1700:                     .&mt('File not found: [_1]'
                   1701:                         ,'<span class="LC_filename">'.$file.'</span>')
                   1702:                     .'</p>';
1.255     sakharuk 1703: 	$result=(<<ENDNOTFOUND);
1.402     albertel 1704: $start_page
1.495     bisitz   1705: $errormsg
1.402     albertel 1706: $end_page
1.78      www      1707: ENDNOTFOUND
1.343     albertel 1708:         $filecontents='';
1.372     albertel 1709: 	if ($env{'request.state'} ne 'published') {
1.274     albertel 1710: 	    if ($filetype eq 'sty') {
                   1711: 		$filecontents=&createnewsty();
1.493     raeburn  1712:             } elsif ($filetype eq 'js') {
                   1713:                 $filecontents=&createnewjs();
1.502     raeburn  1714:             } elsif ($filetype ne 'css' && $filetype ne 'txt' && $filetype ne 'tex') {
1.274     albertel 1715: 		$filecontents=&createnewhtml();
                   1716: 	    }
1.372     albertel 1717: 	    $env{'form.editmode'}='Edit'; #force edit mode
1.255     sakharuk 1718: 	}
                   1719:     } else {
1.372     albertel 1720: 	unless ($env{'request.state'} eq 'published') {
1.343     albertel 1721: 	    if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1.381     www      1722: 		&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 1723: 	    }
1.264     www      1724: #
                   1725: # we are in construction space, see if edit mode forced
1.385     albertel 1726:             &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                   1727: 						    ['editmode']);
1.255     sakharuk 1728: 	}
1.427     banghart 1729: 	if (!$env{'form.editmode'} || $env{'form.viewmode'} || $env{'form.discardview'}) {
1.493     raeburn  1730:             if ($filetype eq 'html' || $filetype eq 'sty') {
                   1731: 	        &Apache::structuretags::reset_problem_globals();
                   1732: 	        $result = &Apache::lonxml::xmlparse($request,$target,
                   1733:                                                     $filecontents,'',%mystyle);
1.455     albertel 1734: 	    # .html files may contain <problem> or <Task> need to clean
                   1735: 	    # up if it did
1.493     raeburn  1736: 	        &Apache::structuretags::reset_problem_globals();
                   1737: 	        &Apache::lonhomework::finished_parsing();
1.502     raeburn  1738:             } elsif ($filetype eq 'tex') {
1.503     raeburn  1739:                 $result = &Apache::lontexconvert::converted(\$filecontents,
                   1740:                               $env{'form.texengine'});
                   1741:                 if ($env{'form.return_only_error_and_warning_counts'}) {
                   1742:                     $result = "$errorcount:$warningcount";
                   1743:                 }
1.493     raeburn  1744:             } else {
                   1745:                 $result = $filecontents;
                   1746:             }
1.385     albertel 1747: 	    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                   1748: 						    ['rawmode']);
1.395     albertel 1749: 	    if ($env{'form.rawmode'}) { $result = $filecontents; }
1.503     raeburn  1750:             if (($filetype ne 'html') && 
                   1751:                 (!$env{'form.return_only_error_and_warning_counts'})) {
1.502     raeburn  1752:                 my $nochgview = 1;
1.495     bisitz   1753:                 my $controls = '';
                   1754:                     if ($env{'request.state'} eq 'construct') {
                   1755:                         $controls = &Apache::loncommon::head_subbox(
                   1756:                                         &Apache::loncommon::CSTR_pageheader()
                   1757:                                        .&Apache::londefdef::edit_controls($nochgview));
                   1758:                     }
1.502     raeburn  1759:                 if ($filetype ne 'sty' && $filetype ne 'tex') {
1.493     raeburn  1760:                     $result =~ s/</&lt;/g;
                   1761:                     $result =~ s/>/&gt;/g;
                   1762:                     $result = '<table class="LC_sty_begin">'.
                   1763:                               '<tr><td><b><pre>'.$result.
                   1764:                               '</pre></b></td></tr></table>';
                   1765:                 }
1.506     droeschl 1766:                 my $brcrum;
                   1767:                 if ($env{'request.state'} eq 'construct') {
1.523     raeburn  1768:                     $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
1.506     droeschl 1769:                                 'text' => 'Construction Space'},
                   1770:                                {'href' => '',
                   1771:                                 'text' => $breadcrumbtext}];
1.493     raeburn  1772:                 } else {
1.506     droeschl 1773:                     $brcrum = ''; # FIXME: Where are we?
1.493     raeburn  1774:                 }
1.506     droeschl 1775:                 my %options = ('bread_crumbs' => $brcrum,
                   1776:                                'bgcolor'      => '#FFFFFF');
                   1777:                 $result =
                   1778:                     &Apache::loncommon::start_page(undef,undef,\%options)
                   1779:                    .$controls
                   1780:                    .$result
                   1781:                    .&Apache::loncommon::end_page();
1.493     raeburn  1782:             }
1.495     bisitz   1783:         }
1.147     albertel 1784:     }
1.456     albertel 1785: 
1.78      www      1786: #
                   1787: # Edit action? Insert editing commands
                   1788: #
1.372     albertel 1789:     unless ($env{'request.state'} eq 'published') {
1.427     banghart 1790: 	if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'})))
1.450     albertel 1791: 	{
1.470     albertel 1792: 	    my $displayfile=$request->uri;
1.529   ! raeburn  1793:             if ($displayfile =~ m{^/uploaded/}) {
        !          1794:                 if ($env{'request.course.id'}) {
        !          1795:                     my $symb = &Apache::lonnet::symbread();
        !          1796:                     my ($map,$id,$res)=&Apache::lonnet::decode_symb($symb);
        !          1797:                     my $navmap=Apache::lonnavmaps::navmap->new;
        !          1798:                     if (ref($navmap)) {
        !          1799:                         my $res = $navmap->getBySymb($symb);
        !          1800:                         my @pathitems = 
        !          1801:                             &Apache::loncommon::get_folder_hierarchy($navmap,$map,1);
        !          1802:                         push(@pathitems,$res->compTitle());
        !          1803:                         $displayfile = join(' &raquo; ',@pathitems);
        !          1804:                     }
        !          1805:                 }
        !          1806:             } else {
        !          1807: 	        $displayfile=~s/^\/[^\/]*//;
        !          1808:             }
1.470     albertel 1809: 
1.452     albertel 1810: 	    my ($edit_info, $add_to_onload, $add_to_onresize)=
1.470     albertel 1811: 		&inserteditinfo($filecontents,$filetype,$displayfile);
1.450     albertel 1812: 
                   1813: 	    my %options = 
                   1814: 		('add_entries' =>
1.495     bisitz   1815:                    {'onresize'     => $add_to_onresize,
                   1816:                     'onload'       => $add_to_onload,   });
1.500     raeburn  1817:             my $header;
                   1818:             if ($env{'request.state'} eq 'construct') {
                   1819:                 $options{'bread_crumbs'} = [{
1.523     raeburn  1820:                             'href' => &Apache::loncommon::authorspace($request->uri),
1.500     raeburn  1821:                             'text' => 'Construction Space'},
                   1822:                            {'href' => '',
1.502     raeburn  1823:                             'text' => $breadcrumbtext}];
1.500     raeburn  1824:                 $header = &Apache::loncommon::head_subbox(
                   1825:                               &Apache::loncommon::CSTR_pageheader());
                   1826:             }
1.452     albertel 1827: 	    my $js =
                   1828: 		&Apache::edit::js_change_detection().
                   1829: 		&Apache::loncommon::resize_textarea_js();
1.451     albertel 1830: 	    my $start_page = &Apache::loncommon::start_page(undef,$js,
1.402     albertel 1831: 							    \%options);
1.495     bisitz   1832:             $result = $start_page
1.500     raeburn  1833:                      .$header
1.495     bisitz   1834:                      .&Apache::lonxml::message_location()
                   1835:                      .$edit_info
                   1836:                      .&Apache::loncommon::end_page();
1.493     raeburn  1837:         }
1.147     albertel 1838:     }
1.402     albertel 1839:     if ($filetype eq 'html') { &writeallows($request->uri); }
1.501     raeburn  1840: 
1.309     albertel 1841:     &Apache::lonxml::add_messages(\$result);
1.255     sakharuk 1842:     $request->print($result);
                   1843:     
                   1844:     return OK;
1.253     albertel 1845: }
                   1846: 
                   1847: sub display_title {
                   1848:     my $result;
1.372     albertel 1849:     if ($env{'request.state'} eq 'construct') {
1.253     albertel 1850: 	my $title=&Apache::lonnet::gettitle();
                   1851: 	if (!defined($title) || $title eq '') {
1.372     albertel 1852: 	    $title = $env{'request.filename'};
1.253     albertel 1853: 	    $title = substr($title, rindex($title, '/') + 1);
                   1854: 	}
1.476     bisitz   1855:         $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA "
                   1856:                   .&mt('Construction Space')."';</script>";
1.253     albertel 1857:     }
                   1858:     return $result;
1.24      sakharuk 1859: }
1.147     albertel 1860: 
1.22      albertel 1861: sub debug {
1.298     albertel 1862:     if ($Apache::lonxml::debug eq "1") {
                   1863: 	$|=1;
1.300     albertel 1864: 	my $request=$Apache::lonxml::request;
1.388     albertel 1865: 	if (!$request) {
                   1866: 	    eval { $request=Apache->request; };
                   1867: 	}
                   1868: 	if (!$request) {
                   1869: 	    eval { $request=Apache2::RequestUtil->request; };
                   1870: 	}
1.314     albertel 1871: 	$request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.346     albertel 1872: 	#&Apache::lonnet::logthis($_[0]);
1.298     albertel 1873:     }
1.22      albertel 1874: }
1.49      albertel 1875: 
1.348     albertel 1876: sub show_error_warn_msg {
1.522     raeburn  1877:     if (($env{'request.filename'} eq 
                   1878:          $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/lib/templates/simpleproblem.problem') &&
                   1879:         (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.351     albertel 1880: 	return 1;
                   1881:     }
1.348     albertel 1882:     return (($Apache::lonxml::debug eq 1) ||
1.372     albertel 1883: 	    ($env{'request.state'} eq 'construct') ||
1.348     albertel 1884: 	    ($Apache::lonhomework::browse eq 'F'
                   1885: 	     &&
1.372     albertel 1886: 	     $env{'form.show_errors'} eq 'on'));
1.348     albertel 1887: }
                   1888: 
1.22      albertel 1889: sub error {
1.454     albertel 1890:     my @errors = @_;
                   1891: 
1.336     albertel 1892:     $errorcount++;
1.454     albertel 1893: 
1.490     www      1894:     $Apache::lonxml::internal_error=1;
                   1895: 
1.454     albertel 1896:     if (defined($Apache::inputtags::part)) {
                   1897: 	if ( @Apache::inputtags::response ) {
                   1898: 	    push(@errors,
                   1899: 		 &mt("This error occurred while processing response [_1] in part [_2]",
                   1900: 		     $Apache::inputtags::response[-1],
                   1901: 		     $Apache::inputtags::part));
                   1902: 	} else {
                   1903: 	    push(@errors,
                   1904: 		 &mt("This error occurred while processing part [_1]",
                   1905: 		     $Apache::inputtags::part));
                   1906: 	}
                   1907:     }
                   1908: 
1.348     albertel 1909:     if ( &show_error_warn_msg() ) {
1.336     albertel 1910: 	# If printing in construction space, put the error inside <pre></pre>
                   1911: 	push(@Apache::lonxml::error_messages,
1.484     bisitz   1912: 	     $Apache::lonxml::warnings_error_header
                   1913:              .'<div class="LC_error">'
                   1914:              .'<b>'.&mt('ERROR:').' </b>'.join("<br />\n",@errors)
                   1915:              ."</div>\n");
1.336     albertel 1916: 	$Apache::lonxml::warnings_error_header='';
                   1917:     } else {
                   1918: 	my $errormsg;
                   1919: 	my ($symb)=&Apache::lonnet::symbread();
                   1920: 	if ( !$symb ) {
                   1921: 	    #public or browsers
1.486     bisitz   1922: 	    $errormsg=&mt("An error occurred while processing this resource. The author has been notified.");
1.403     albertel 1923: 	}
1.413     albertel 1924: 	my $host=$Apache::lonnet::perlvar{'lonHostID'};
1.476     bisitz   1925: 	push(@errors,
                   1926:         &mt("The error occurred on host [_1]",
                   1927:              "<tt>$host</tt>"));
1.454     albertel 1928: 
                   1929: 	my $msg = join('<br />', @errors);
                   1930: 
1.336     albertel 1931: 	#notify author
1.403     albertel 1932: 	&Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
1.336     albertel 1933: 	#notify course
1.372     albertel 1934: 	if ( $symb && $env{'request.course.id'} ) {
1.380     www      1935: 	    my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
                   1936: 	    my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1.440     albertel 1937: 	    my (undef,%users)=&Apache::lonmsg::decide_receiver(undef,0,1,1,1);
1.372     albertel 1938: 	    my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1.435     raeburn  1939:             my $baseurl = &Apache::lonnet::clutter($declutter);
1.336     albertel 1940: 	    my @userlist;
                   1941: 	    foreach (keys %users) {
                   1942: 		my ($user,$domain) = split(/:/, $_);
                   1943: 		push(@userlist,"$user\@$domain");
1.380     www      1944: 		my $key=$declutter.'_'.$user.'_'.$domain;
                   1945: 		my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
                   1946: 						      [$key],
                   1947: 						      $cdom,$cnum);
                   1948: 		my $now=time;
                   1949: 		if ($now-$lastnotified{$key}>86400) {
1.434     raeburn  1950:                     my $title = &Apache::lonnet::gettitle($symb);
                   1951:                     my $sentmessage;
1.380     www      1952: 		    &Apache::lonmsg::user_normal_msg($user,$domain,
1.435     raeburn  1953: 		        "Error [$title]",$msg,'',$baseurl,'','',
1.434     raeburn  1954:                         \$sentmessage,$symb,$title,1);
1.380     www      1955: 		    &Apache::lonnet::put('nohist_xmlerrornotifications',
                   1956: 					 {$key => $now},
                   1957: 					 $cdom,$cnum);		
                   1958: 		}
1.336     albertel 1959: 	    }
1.372     albertel 1960: 	    if ($env{'request.role.adv'}) {
1.486     bisitz   1961: 		$errormsg=&mt("An error occurred while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1.336     albertel 1962: 	    } else {
1.486     bisitz   1963: 		$errormsg=&mt("An error occurred while processing this resource. The instructor has been notified.");
1.336     albertel 1964: 	    }
                   1965: 	}
                   1966: 	push(@Apache::lonxml::error_messages,"<b>$errormsg</b> <br />");
1.52      albertel 1967:     }
1.22      albertel 1968: }
1.49      albertel 1969: 
1.22      albertel 1970: sub warning {
1.295     albertel 1971:     $warningcount++;
1.261     albertel 1972:   
1.372     albertel 1973:     if ($env{'form.grade_target'} ne 'tex') {
1.348     albertel 1974: 	if ( &show_error_warn_msg() ) {
1.309     albertel 1975: 	    push(@Apache::lonxml::warning_messages,
1.484     bisitz   1976: 		 $Apache::lonxml::warnings_error_header
                   1977:                 .'<div class="LC_warning">'
                   1978:                 .&mt('[_1]W[_2]ARNING','<b>','</b>')."<b>:</b> ".join('<br />',@_)
                   1979:                 ."</div>\n"
1.482     bisitz   1980:                 );
1.295     albertel 1981: 	    $Apache::lonxml::warnings_error_header='';
                   1982: 	}
                   1983:     }
1.309     albertel 1984: }
                   1985: 
                   1986: sub info {
1.372     albertel 1987:     if ($env{'form.grade_target'} ne 'tex' 
                   1988: 	&& $env{'request.state'} eq 'construct') {
1.309     albertel 1989: 	push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
                   1990:     }
                   1991: }
                   1992: 
                   1993: sub message_location {
                   1994:     return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
                   1995: }
                   1996: 
                   1997: sub add_messages {
                   1998:     my ($msg)=@_;
                   1999:     my $result=join(' ',
                   2000: 		    @Apache::lonxml::info_messages,
                   2001: 		    @Apache::lonxml::error_messages,
                   2002: 		    @Apache::lonxml::warning_messages);
                   2003:     undef(@Apache::lonxml::info_messages);
                   2004:     undef(@Apache::lonxml::error_messages);
                   2005:     undef(@Apache::lonxml::warning_messages);
                   2006:     $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
                   2007:     $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83      albertel 2008: }
                   2009: 
                   2010: sub get_param {
1.213     albertel 2011:     my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
                   2012:     if ( ! $context ) { $context = -1; }
                   2013:     my $args ='';
                   2014:     if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297     sakharuk 2015:     if ( ! $Apache::lonxml::usestyle ) {
                   2016: 	$args=$Apache::lonxml::style_values.$args;
                   2017:     }
1.213     albertel 2018:     if ( ! $args ) { return undef; }
                   2019:     if ( $case_insensitive ) {
1.417     albertel 2020: 	if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
1.213     albertel 2021: 	    return &Apache::run::run("{$args;".'return $'.$param.'}',
                   2022:                                      $safeeval); #'
                   2023: 	} else {
                   2024: 	    return undef;
                   2025: 	}
                   2026:     } else {
1.417     albertel 2027: 	if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
1.213     albertel 2028: 	    return &Apache::run::run("{$args;".'return $'.$param.'}',
                   2029:                                      $safeeval); #'
                   2030: 	} else {
                   2031: 	    return undef;
                   2032: 	}
                   2033:     }
1.22      albertel 2034: }
                   2035: 
1.132     albertel 2036: sub get_param_var {
1.213     albertel 2037:   my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132     albertel 2038:   if ( ! $context ) { $context = -1; }
                   2039:   my $args ='';
                   2040:   if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297     sakharuk 2041:   if ( ! $Apache::lonxml::usestyle ) {
                   2042:       $args=$Apache::lonxml::style_values.$args;
                   2043:   }
1.230     albertel 2044:   &Apache::lonxml::debug("Args are $args param is $param");
1.213     albertel 2045:   if ($case_insensitive) {
1.419     albertel 2046:       if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
1.213     albertel 2047: 	  return undef;
                   2048:       }
1.419     albertel 2049:   } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
1.132     albertel 2050:   my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230     albertel 2051:   &Apache::lonxml::debug("first run is $value");
1.341     albertel 2052:   if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1.230     albertel 2053:       &Apache::lonxml::debug("doing second");
                   2054:       my @result=&Apache::run::run("return $value",$safeeval,1);
                   2055:       if (!defined($result[0])) {
                   2056: 	  return $value
                   2057:       } else {
                   2058: 	  if (wantarray) { return @result; } else { return $result[0]; }
                   2059:       }
1.132     albertel 2060:   } else {
                   2061:     return $value;
                   2062:   }
                   2063: }
                   2064: 
1.438     albertel 2065: sub register_insert_xml {
                   2066:     my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'}
                   2067: 				     .'/insertlist.xml');
                   2068:     my ($tagnum,$in_help)=(0,0);
1.442     albertel 2069:     my @alltags;
1.438     albertel 2070:     my $tag;
                   2071:     while (my $token = $parser->get_token()) {
                   2072: 	if ($token->[0] eq 'S') {
                   2073: 	    my $key;
1.525     raeburn  2074: 	    if ($token->[1] eq 'tag') {
1.438     albertel 2075: 		$tag = $token->[2]{'name'};
1.525     raeburn  2076:                 if (defined($tag)) {
                   2077: 		    $insertlist{$tagnum.'.tag'} = $tag;
                   2078: 		    $insertlist{$tag.'.num'}   = $tagnum;
                   2079: 		    push(@alltags,$tag);
                   2080:                 }
1.438     albertel 2081: 	    } elsif ($in_help && $token->[1] eq 'file') {
                   2082: 		$key = $tag.'.helpfile';
                   2083: 	    } elsif ($in_help && $token->[1] eq 'description') {
                   2084: 		$key = $tag.'.helpdesc';
                   2085: 	    } elsif ($token->[1] eq 'description' ||
                   2086: 		     $token->[1] eq 'color'       ||
                   2087: 		     $token->[1] eq 'show'          ) {
                   2088: 		$key = $tag.'.'.$token->[1];
                   2089: 	    } elsif ($token->[1] eq 'insert_sub') {
                   2090: 		$key = $tag.'.function';
                   2091: 	    } elsif ($token->[1] eq 'help') {
                   2092: 		$in_help=1;
                   2093: 	    } elsif ($token->[1] eq 'allow') {
1.442     albertel 2094: 		$key = $tag.'.allow';
1.438     albertel 2095: 	    }
                   2096: 	    if (defined($key)) {
                   2097: 		$insertlist{$key} = $parser->get_text();
                   2098: 		$insertlist{$key} =~ s/(^\s*|\s*$ )//gx;
                   2099: 	    }
                   2100: 	} elsif ($token->[0] eq 'E') {
                   2101: 	    if      ($token->[1] eq 'tag') {
                   2102: 		undef($tag);
                   2103: 		$tagnum++;
                   2104: 	    } elsif ($token->[1] eq 'help') {
                   2105: 		undef($in_help);
                   2106: 	    }
                   2107: 	}
                   2108:     }
1.442     albertel 2109:     
                   2110:     # parse the allows and ignore tags set to <show>no</show>
                   2111:     foreach my $tag (@alltags) {	
1.519     raeburn  2112:         next if (!exists($insertlist{$tag.'.allow'}));
                   2113: 	my $allow =  $insertlist{$tag.'.allow'};
1.442     albertel 2114:        	foreach my $element (split(',',$allow)) {
                   2115: 	    $element =~ s/(^\s*|\s*$ )//gx;
1.519     raeburn  2116: 	    if (!exists($insertlist{$element.'.show'})
                   2117:                 || $insertlist{$element.'.show'} ne 'no') {
1.442     albertel 2118: 		push(@{ $insertlist{$tag.'.which'} },$element);
                   2119: 	    }
                   2120: 	}
                   2121:     }
1.438     albertel 2122: }
                   2123: 
                   2124: sub register_insert {
                   2125:     return &register_insert_xml(@_);
                   2126: #    &dump_insertlist('2');
                   2127: }
                   2128: 
                   2129: sub dump_insertlist {
                   2130:     my ($ext) = @_;
                   2131:     open(XML,">/tmp/insertlist.xml.$ext");
                   2132:     print XML ("<insertlist>");
                   2133:     my $i=0;
                   2134: 
                   2135:     while (exists($insertlist{"$i.tag"})) {
                   2136: 	my $tag = $insertlist{"$i.tag"};
                   2137: 	print XML ("
                   2138: \t<tag name=\"$tag\">");
                   2139: 	if (defined($insertlist{"$tag.description"})) {
                   2140: 	    print XML ("
                   2141: \t\t<description>".$insertlist{"$tag.description"}."</description>");
                   2142: 	}
                   2143: 	if (defined($insertlist{"$tag.color"})) {
                   2144: 	    print XML ("
                   2145: \t\t<color>".$insertlist{"$tag.color"}."</color>");
                   2146: 	}
                   2147: 	if (defined($insertlist{"$tag.function"})) {
                   2148: 	    print XML ("
                   2149: \t\t<insert_sub>".$insertlist{"$tag.function"}."</insert_sub>");
                   2150: 	}
                   2151: 	if (defined($insertlist{"$tag.show"})
                   2152: 	    && $insertlist{"$tag.show"} ne 'yes') {
                   2153: 	    print XML ("
                   2154: \t\t<show>".$insertlist{"$tag.show"}."</show>");
                   2155: 	}
                   2156: 	if (defined($insertlist{"$tag.helpfile"})) {
                   2157: 	    print XML ("
                   2158: \t\t<help>
                   2159: \t\t\t<file>".$insertlist{"$tag.helpfile"}."</file>");
                   2160: 	    if ($insertlist{"$tag.helpdesc"} ne '') {
                   2161: 		print XML ("
                   2162: \t\t\t<description>".$insertlist{"$tag.helpdesc"}."</description>");
                   2163: 	    }
                   2164: 	    print XML ("
                   2165: \t\t</help>");
                   2166: 	}
                   2167: 	if (defined($insertlist{"$tag.which"})) {
                   2168: 	    print XML ("
                   2169: \t\t<allow>".join(',',sort(@{ $insertlist{"$tag.which"} }))."</allow>");
                   2170: 	}
                   2171: 	print XML ("
                   2172: \t</tag>");
                   2173: 	$i++;
                   2174:     }
                   2175:     print XML ("\n</insertlist>\n");
                   2176:     close(XML);
                   2177: }
                   2178: 
1.98      albertel 2179: sub description {
1.437     albertel 2180:     my ($token)=@_;
                   2181:     my $tag = &get_tag($token);
                   2182:     return $insertlist{$tag.'.description'};
1.268     bowersj2 2183: }
                   2184: 
                   2185: # Returns a list containing the help file, and the description
                   2186: sub helpinfo {
1.437     albertel 2187:     my ($token)=@_;
                   2188:     my $tag = &get_tag($token);
                   2189:     return ($insertlist{$tag.'.helpfile'}, $insertlist{$tag.'.helpdesc'});
                   2190: }
                   2191: 
                   2192: sub get_tag {
                   2193:     my ($token)=@_;
                   2194:     my $tagnum;
                   2195:     my $tag=$token->[1];
                   2196:     foreach my $namespace (reverse(@Apache::lonxml::namespace)) {
                   2197: 	my $testtag = $namespace.'::'.$tag;
                   2198: 	$tagnum = $insertlist{"$testtag.num"};
                   2199: 	last if (defined($tagnum));
                   2200:     }
                   2201:     if (!defined($tagnum)) {
                   2202: 	$tagnum = $Apache::lonxml::insertlist{"$tag.num"};
                   2203:     }
                   2204:     return $insertlist{"$tagnum.tag"};
1.98      albertel 2205: }
1.123     albertel 2206: 
1.485     onken    2207: ############################################################
                   2208: #                                           PDF-FORM-METHODS
                   2209: 
                   2210: =pod
                   2211: 
1.508     onken    2212: =item &print_pdf_radiobutton(fieldname, value)
1.485     onken    2213: 
1.508     onken    2214: Returns a latexline to generate a PDF-Form-Radiobutton.
                   2215: Note: Radiobuttons with equal names are automaticly grouped 
                   2216:       in a selection-group.
1.485     onken    2217: 
1.508     onken    2218: $fieldname: PDF internalname of the radiobutton(group)
                   2219: $value:     Value of radiobutton
1.485     onken    2220: 
                   2221: =cut
                   2222: sub print_pdf_radiobutton {
1.508     onken    2223:     my ($fieldname, $value) = @_;
                   2224:     return '\radioButton[\symbolchoice{circle}]{'
                   2225:            .$fieldname.'}{10bp}{10bp}{'.$value.'}';
1.485     onken    2226: }
                   2227: 
                   2228: 
                   2229: =pod
                   2230: 
                   2231: =item &print_pdf_start_combobox(fieldname)
                   2232: 
                   2233: Starts a latexline to generate a PDF-Form-Combobox with text.
                   2234: 
                   2235: $fieldname: PDF internal name of the Combobox
                   2236: 
                   2237: =cut
                   2238: sub print_pdf_start_combobox {
                   2239:     my $result;
                   2240:     my ($fieldName) = @_;
                   2241:     $result .= '\begin{tabularx}{\textwidth}{p{2.5cm}X}'."\n";
                   2242:     $result .= '\comboBox[]{'.$fieldName.'}{2.3cm}{14bp}{'; # 
                   2243: 
                   2244:     return $result;
                   2245: }
                   2246: 
                   2247: 
                   2248: =pod
                   2249: 
                   2250: =item &print_pdf_add_combobox_option(options)
                   2251: 
                   2252: Generates a latexline to add Options to a PDF-Form-ComboBox.
                   2253: 
                   2254: $option: PDF internal name of the Combobox-Option
                   2255: 
                   2256: =cut
                   2257: sub print_pdf_add_combobox_option {
                   2258: 
                   2259:     my $result;
                   2260:     my ($option) = @_;  
                   2261: 
                   2262:     $result .= '('.$option.')';
                   2263:     
                   2264:     return $result;
                   2265: }
                   2266: 
                   2267: 
                   2268: =pod
                   2269: 
                   2270: =item &print_pdf_end_combobox(text) {
                   2271: 
                   2272: Returns latexcode to end a PDF-Form-Combobox with text.
                   2273: 
                   2274: =cut
                   2275: sub print_pdf_end_combobox {
                   2276:     my $result;
                   2277:     my ($text) = @_;
                   2278: 
                   2279:     $result .= '}&'.$text."\\\\\n";
                   2280:     $result .= '\end{tabularx}' . "\n";
                   2281:     $result .= '\hspace{2mm}' . "\n";
                   2282:     return $result;
                   2283: }
                   2284: 
                   2285: 
                   2286: =pod
                   2287: 
                   2288: =item &print_pdf_hiddenField(fieldname, user, domain)
                   2289: 
                   2290: Returns a latexline to generate a PDF-Form-hiddenField with userdata.
                   2291: 
                   2292: $fieldname label for hiddentextfield
                   2293: $user:    name of user
                   2294: $domain:  domain of user
                   2295: 
                   2296: =cut
                   2297: sub print_pdf_hiddenfield {
                   2298:     my $result;
                   2299:     my ($fieldname, $user, $domain) = @_;
                   2300: 
                   2301:     $result .= '\textField [\F{\FHidden}\F{-\FPrint}\V{'.$domain.'&'.$user.'}]{'.$fieldname.'}{0in}{0in}'."\n";
                   2302: 
                   2303:     return $result;
                   2304: }
                   2305: 
1.1       sakharuk 2306: 1;
                   2307: __END__
1.68      www      2308: 

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