Annotation of loncom/xml/lonxml.pm, revision 1.565

1.2       sakharuk    1: # The LearningOnline Network with CAPA
1.3       sakharuk    2: # XML Parser Module 
1.2       sakharuk    3: #
1.565   ! raeburn     4: # $Id: lonxml.pm,v 1.564 2023/11/27 23:24:05 raeburn Exp $
1.139     www         5: #
                      6: # Copyright Michigan State University Board of Trustees
                      7: #
                      8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      9: #
                     10: # LON-CAPA is free software; you can redistribute it and/or modify
                     11: # it under the terms of the GNU General Public License as published by
                     12: # the Free Software Foundation; either version 2 of the License, or
                     13: # (at your option) any later version.
                     14: #
                     15: # LON-CAPA is distributed in the hope that it will be useful,
                     16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     18: # GNU General Public License for more details.
                     19: #
                     20: # You should have received a copy of the GNU General Public License
                     21: # along with LON-CAPA; if not, write to the Free Software
                     22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     23: #
                     24: # /home/httpd/html/adm/gpl.txt
                     25: #
                     26: # http://www.lon-capa.org/
                     27: #
                     28: # Copyright for TtHfunc and TtMfunc by Ian Hutchinson. 
                     29: # TtHfunc and TtMfunc (the "Code") may be compiled and linked into 
                     30: # binary executable programs or libraries distributed by the 
                     31: # Michigan State University (the "Licensee"), but any binaries so 
                     32: # distributed are hereby licensed only for use in the context
                     33: # of a program or computational system for which the Licensee is the 
                     34: # primary author or distributor, and which performs substantial 
                     35: # additional tasks beyond the translation of (La)TeX into HTML.
                     36: # The C source of the Code may not be distributed by the Licensee
                     37: # to any other parties under any circumstances.
                     38: #
1.316     albertel   39: 
1.489     jms        40: =pod
                     41: 
                     42: =head1 NAME
                     43: 
                     44: Apache::lonxml
                     45: 
                     46: =head1 SYNOPSIS
                     47: 
                     48: XML Parsing Module
                     49: 
                     50: This is part of the LearningOnline Network with CAPA project
                     51: described at http://www.lon-capa.org.
                     52: 
                     53: 
                     54: =head1 SUBROUTINES
                     55: 
                     56: =cut
                     57: 
                     58: 
1.2       sakharuk   59: 
1.4       albertel   60: package Apache::lonxml; 
1.33      www        61: use vars 
1.410     albertel   62: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace $errorcount $warningcount);
1.1       sakharuk   63: use strict;
1.444     albertel   64: use LONCAPA;
1.167     albertel   65: use HTML::LCParser();
1.161     albertel   66: use HTML::TreeBuilder();
                     67: use HTML::Entities();
                     68: use Safe();
                     69: use Safe::Hole();
                     70: use Math::Cephes();
                     71: use Math::Random();
1.558     raeburn    72: use Math::Calculus::Expression();
1.560     raeburn    73: use Number::FormatEng();
1.161     albertel   74: use Opcode();
1.271     www        75: use POSIX qw(strftime);
1.339     albertel   76: use Time::HiRes qw( gettimeofday tv_interval );
1.393     albertel   77: use Symbol();
1.266     bowersj2   78: 
1.72      albertel   79: sub register {
1.141     albertel   80:   my ($space,@taglist) = @_;
                     81:   foreach my $temptag (@taglist) {
                     82:     push(@{ $Apache::lonxml::alltags{$temptag} },$space);
1.72      albertel   83:   }
                     84: }
                     85: 
1.141     albertel   86: sub deregister {
                     87:   my ($space,@taglist) = @_;
                     88:   foreach my $temptag (@taglist) {
                     89:     my $tempspace = $Apache::lonxml::alltags{$temptag}[-1];
                     90:     if ($tempspace eq $space) {
                     91:       pop(@{ $Apache::lonxml::alltags{$temptag} });
                     92:     }
                     93:   }
1.142     albertel   94:   #&printalltags();
1.141     albertel   95: }
                     96: 
1.46      www        97: use Apache::Constants qw(:common);
1.161     albertel   98: use Apache::lontexconvert();
                     99: use Apache::style();
                    100: use Apache::run();
                    101: use Apache::londefdef();
                    102: use Apache::scripttag();
1.285     www       103: use Apache::languagetags();
1.161     albertel  104: use Apache::edit();
1.266     bowersj2  105: use Apache::inputtags();
                    106: use Apache::outputtags();
1.372     albertel  107: use Apache::lonnet;
1.161     albertel  108: use Apache::File();
                    109: use Apache::loncommon();
1.198     www       110: use Apache::lonfeedback();
1.200     www       111: use Apache::lonmsg();
1.217     matthew   112: use Apache::loncacc();
1.431     www       113: use Apache::lonmaxima();
1.494     www       114: use Apache::lonr();
1.280     www       115: use Apache::lonlocal;
1.501     raeburn   116: use Apache::lonhtmlcommon();
1.520     www       117: use Apache::functionplotresponse();
1.529     raeburn   118: use Apache::lonnavmaps();
1.79      www       119: 
1.462     foxr      120: #====================================   Main subroutine: xmlparse  
                    121: 
1.72      albertel  122: #debugging control, to turn on debugging modify the correct handler
1.462     foxr      123: 
1.72      albertel  124: $Apache::lonxml::debug=0;
1.206     albertel  125: 
                    126: # keeps count of the number of warnings and errors generated in a parse
                    127: $warningcount=0;
                    128: $errorcount=0;
1.72      albertel  129: 
                    130: #path to the directory containing the file currently being processed
                    131: @pwd=();
                    132: 
                    133: #these two are used for capturing a subset of the output for later processing,
                    134: #don't touch them directly use &startredirection and &endredirection
                    135: @outputstack = ();
                    136: $redirection = 0;
                    137: 
                    138: #controls wheter the <import> tag actually does
                    139: $import = 1;
                    140: @extlinks=();
                    141: 
                    142: # meta mode is a bit weird only some output is to be turned off
                    143: #<output> tag turns metamode off (defined in londefdef.pm)
                    144: $metamode = 0;
                    145: 
                    146: # turns on and of run::evaluate actually derefencing var refs
                    147: $evaluate = 1;
1.7       albertel  148: 
1.545     bisitz    149: # data structure for edit mode, determines what tags can go into what other tags
1.74      albertel  150: %insertlist=();
1.68      www       151: 
1.99      albertel  152: # stores the list of active tag namespaces
1.76      albertel  153: @namespace=();
                    154: 
1.448     albertel  155: # stores all Scrit Vars displays for later showing
                    156: my @script_var_displays=();
                    157: 
1.172     albertel  158: # a pointer the the Apache request object
                    159: $Apache::lonxml::request='';
                    160: 
1.216     sakharuk  161: # a problem number counter, and check on ether it is used
1.237     sakharuk  162: $Apache::lonxml::counter=1;
1.204     albertel  163: $Apache::lonxml::counter_changed=0;
                    164: 
1.462     foxr      165: # Part counter hash.   In analysis mode, the
                    166: # problems can use this to record which parts increment the counter
                    167: # by how much.  The counter subs will maintain this hash via
                    168: # their optional part parameters.  Note that the assumption is that
                    169: # analysis is done in one request and therefore it is not necessary to
                    170: # save this information request-to-request.
                    171: 
                    172: 
                    173: %Apache::lonxml::counters_per_part = ();
                    174: 
1.212     albertel  175: #internal check on whether to look at style defs
                    176: $Apache::lonxml::usestyle=1;
1.260     albertel  177: 
                    178: #locations used to store the parameter string for style substitutions
                    179: $Apache::lonxml::style_values='';
                    180: $Apache::lonxml::style_end_values='';
1.212     albertel  181: 
1.281     albertel  182: #array of ssi calls that need to occur after we are done parsing
                    183: @Apache::lonxml::ssi_info=();
                    184: 
1.282     albertel  185: #should we do the postag variable interpolation
                    186: $Apache::lonxml::post_evaluate=1;
                    187: 
1.295     albertel  188: #a header message to emit in the case of any generated warning or errors
                    189: $Apache::lonxml::warnings_error_header='';
                    190: 
1.396     foxr      191: #  Control whether or not LaTeX symbols should be substituted for their
                    192: #  \ style equivalents...this may be turned off e.g. in an verbatim
                    193: #  environment.
                    194: 
                    195: $Apache::lonxml::substitute_LaTeX_symbols = 1; # Starts out on.
                    196: 
                    197: sub enable_LaTeX_substitutions {
                    198:     $Apache::lonxml::substitute_LaTeX_symbols = 1;
                    199: }
                    200: sub disable_LaTeX_substitutions {
                    201:     $Apache::lonxml::substitute_LaTeX_symbols = 0;
                    202: }
                    203: 
1.68      www       204: sub xmlend {
1.335     sakharuk  205:     my ($target,$parser)=@_;
1.278     www       206:     my $mode='xml';
                    207:     my $status='OPEN';
1.368     albertel  208:     if ($Apache::lonhomework::parsing_a_problem ||
                    209: 	$Apache::lonhomework::parsing_a_task ) {
1.278     www       210: 	$mode='problem';
                    211: 	$status=$Apache::inputtags::status[-1]; 
                    212:     }
1.362     matthew   213:     my $discussion;
1.379     albertel  214:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                    215: 					   ['LONCAPA_INTERNAL_no_discussion']);
1.528     www       216:     if (
                    217:            (   (!exists($env{'form.LONCAPA_INTERNAL_no_discussion'})) 
                    218:             || ($env{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true')
                    219:            ) 
                    220:         && ($env{'form.inhibitmenu'} ne 'yes')
                    221:        ) {
1.362     matthew   222:         $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
                    223:     }
1.334     sakharuk  224:     if ($target eq 'tex') {
1.335     sakharuk  225: 	$discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
1.334     sakharuk  226: 	&Apache::lonxml::newparser($parser,\$discussion,'');
                    227: 	return '';
                    228:     }
1.405     albertel  229: 
1.407     albertel  230:     return $discussion;
1.119     www       231: }
                    232: 
1.48      albertel  233: sub printalltags {
1.551     raeburn   234:     foreach my $temp (sort(keys(%Apache::lonxml::alltags))) {
                    235:         &Apache::lonxml::debug("$temp -- ".
                    236:                                join(',',@{ $Apache::lonxml::alltags{$temp} }));
                    237:     }
1.48      albertel  238: }
1.31      sakharuk  239: 
1.3       sakharuk  240: sub xmlparse {
1.172     albertel  241:  my ($request,$target,$content_file_string,$safeinit,%style_for_target) = @_;
1.96      albertel  242: 
1.172     albertel  243:  &setup_globals($request,$target);
1.232     albertel  244:  &Apache::inputtags::initialize_inputtags();
1.370     albertel  245:  &Apache::bridgetask::initialize_bridgetask();
1.232     albertel  246:  &Apache::outputtags::initialize_outputtags();
                    247:  &Apache::edit::initialize_edit();
1.287     albertel  248:  &Apache::londefdef::initialize_londefdef();
1.244     albertel  249: 
1.178     www       250: #
                    251: # do we have a course style file?
                    252: #
                    253: 
1.372     albertel  254:  if ($env{'request.course.id'} && $env{'request.state'} ne 'construct') {
1.178     www       255:      my $bodytext=
1.372     albertel  256: 	 $env{'course.'.$env{'request.course.id'}.'.default_xml_style'};
1.178     www       257:      if ($bodytext) {
1.337     albertel  258: 	 foreach my $file (split(',',$bodytext)) {
                    259: 	     my $location=&Apache::lonnet::filelocation('',$file);
                    260: 	     my $styletext=&Apache::lonnet::getfile($location);
                    261: 	     if ($styletext ne '-1') {
                    262: 		 %style_for_target = (%style_for_target,
                    263: 				      &Apache::style::styleparser($target,$styletext));
                    264: 	     }
                    265: 	 }
                    266:      }
1.449     albertel  267:  } elsif ($env{'construct.style'}
                    268: 	  && ($env{'request.state'} eq 'construct')) {
1.372     albertel  269:      my $location=&Apache::lonnet::filelocation('',$env{'construct.style'});
1.291     sakharuk  270:      my $styletext=&Apache::lonnet::getfile($location);
1.449     albertel  271:      if ($styletext ne '-1') {
                    272: 	 %style_for_target = (%style_for_target,
                    273: 			      &Apache::style::styleparser($target,$styletext));
                    274:      }
1.178     www       275:  }
1.255     sakharuk  276: #&printalltags();
1.16      albertel  277:  my @pars = ();
1.372     albertel  278:  my $pwd=$env{'request.filename'};
1.23      albertel  279:  $pwd =~ s:/[^/]*$::;
                    280:  &newparser(\@pars,\$content_file_string,$pwd);
1.24      sakharuk  281: 
1.3       sakharuk  282:  my $safeeval = new Safe;
1.40      albertel  283:  my $safehole = new Safe::Hole;
1.82      ng        284:  &init_safespace($target,$safeeval,$safehole,$safeinit);
1.3       sakharuk  285: #-------------------- Redefinition of the target in the case of compound target
                    286: 
                    287:  ($target, my @tenta) = split('&&',$target);
                    288: 
1.150     albertel  289:  my @stack = ();
1.3       sakharuk  290:  my @parstack = ();
1.358     albertel  291:  &initdepth();
                    292:  &init_alarm();
1.101     albertel  293:  my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
1.394     albertel  294: 				   $safeeval,\%style_for_target,1);
1.255     sakharuk  295: 
1.425     albertel  296:  if (@stack) {
1.482     bisitz    297:      &warning(&mt('At end of file some tags were still left unclosed:').
                    298: 	      ' <tt>&lt;'.join('&gt;</tt>, <tt>&lt;',reverse(@stack)).
1.425     albertel  299: 	      '&gt;</tt>');
                    300:  }
1.372     albertel  301:  if ($env{'request.uri'}) {
                    302:     &writeallows($env{'request.uri'});
1.125     www       303:  }
1.281     albertel  304:  &do_registered_ssi();
1.204     albertel  305:  if ($Apache::lonxml::counter_changed) { &store_counter() }
1.393     albertel  306: 
                    307:  &clean_safespace($safeeval);
                    308: 
1.448     albertel  309:  if (@script_var_displays) {
1.546     raeburn   310:      if ($finaloutput =~ m{</body>\s*</html>\s*$}s) {
                    311:          my $scriptoutput = join('',@script_var_displays);
                    312:          $finaloutput=~s{(</body>\s*</html>)\s*$}{$scriptoutput$1}s;
                    313:      } else {
                    314:          $finaloutput .= join('',@script_var_displays);
                    315:      }
1.448     albertel  316:      undef(@script_var_displays);
                    317:  }
1.469     albertel  318:  &init_state();
1.372     albertel  319:  if ($env{'form.return_only_error_and_warning_counts'}) {
1.473     www       320:      if ($env{'request.filename'}=~/\.(html|htm|xml)$/i) { 
                    321:         my $error=&verify_html($content_file_string);
                    322:         if ($error) { $errorcount++; }
                    323:      }
1.361     www       324:      return "$errorcount:$warningcount";
                    325:  }
1.3       sakharuk  326:  return $finaloutput;
1.106     www       327: }
                    328: 
1.191     albertel  329: sub latex_special_symbols {
1.272     albertel  330:     my ($string,$where)=@_;
1.396     foxr      331:     #
                    332:     #  If e.g. in verbatim mode, then don't substitute.
                    333:     #  but return original string.
                    334:     #
                    335:     if (!($Apache::lonxml::substitute_LaTeX_symbols)) {
                    336: 	return $string;
                    337:     }
1.235     sakharuk  338:     if ($where eq 'header') {
1.414     foxr      339: 	$string =~ s/\\/\$\\backslash\$/g; # \  -> $\backslash$ per LaTex line by line pg  10.
1.311     albertel  340: 	$string =~ s/(\$|%|\{|\})/\\$1/g;
                    341: 	$string=&Apache::lonprintout::character_chart($string);
                    342: 	# any & or # leftover should be safe to just escape
                    343:         $string=~s/([^\\])\&/$1\\\&/g;
                    344:         $string=~s/([^\\])\#/$1\\\#/g;
1.415     foxr      345: 	$string =~ s/_/\\_/g;              # _ -> \_
                    346: 	$string =~ s/\^/\\\^{}/g;          # ^ -> \^{} 
1.229     sakharuk  347:     } else {
1.312     albertel  348: 	$string=~s/\\/\\ensuremath{\\backslash}/g;
1.367     albertel  349: 	$string=~s/\\\%|\%/\\\%/g;
1.556     raeburn   350: 	$string=~s/\\\{|\{/\\{/g;
1.367     albertel  351: 	$string=~s/\\}|}/\\}/g;
1.556     raeburn   352: 	$string=~s/\\ensuremath\\\{\\backslash\\}/\\ensuremath{\\backslash}/g;
1.367     albertel  353: 	$string=~s/\\\$|\$/\\\$/g;
                    354: 	$string=~s/\\\_|\_/\\\_/g;
1.313     albertel  355:         $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
1.310     sakharuk  356: 	$string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
1.311     albertel  357: 	$string=&Apache::lonprintout::character_chart($string);
                    358: 	# any & or # leftover should be safe to just escape
1.367     albertel  359: 	$string=~s/\\\&|\&/\\\&/g;
                    360: 	$string=~s/\\\#|\#/\\\#/g;
1.332     sakharuk  361:         $string=~s/\|/\$\\mid\$/g;
1.310     sakharuk  362: #single { or } How to escape?
1.229     sakharuk  363:     }
1.272     albertel  364:     return $string;
1.188     sakharuk  365: }
                    366: 
1.101     albertel  367: sub inner_xmlparse {
1.394     albertel  368:   my ($target,$stack,$parstack,$pars,$safeeval,$style_for_target,$start)=@_;
1.101     albertel  369:   my $finaloutput = '';
                    370:   my $result;
                    371:   my $token;
1.258     albertel  372:   my $dontpop=0;
1.553     raeburn   373:   my $lastdontpop;
                    374:   my $lastendtag;
1.389     albertel  375:   my $startredirection = $Apache::lonxml::redirection;
1.101     albertel  376:   while ( $#$pars > -1 ) {
                    377:     while ($token = $$pars['-1']->get_token) {
1.261     albertel  378:       if (($token->[0] eq 'T') || ($token->[0] eq 'C') ) {
1.101     albertel  379: 	if ($metamode<1) {
1.190     albertel  380: 	    my $text=$token->[1];
1.193     albertel  381: 	    if ($token->[0] eq 'C' && $target eq 'tex') {
1.239     sakharuk  382: 		$text = '';
                    383: #		$text = '%'.$text."\n";
1.182     sakharuk  384: 	    }
1.190     albertel  385: 	    $result.=$text;
1.101     albertel  386: 	}
1.261     albertel  387:       } elsif (($token->[0] eq 'D')) {
                    388: 	if ($metamode<1 && $target eq 'web') {
                    389: 	    my $text=$token->[1];
                    390: 	    $result.=$text;
                    391: 	}
1.101     albertel  392:       } elsif ($token->[0] eq 'PI') {
1.261     albertel  393: 	if ($metamode<1 && $target eq 'web') {
1.101     albertel  394: 	  $result=$token->[2];
                    395: 	}
                    396:       } elsif ($token->[0] eq 'S') {
1.140     albertel  397: 	# add tag to stack
1.101     albertel  398: 	push (@$stack,$token->[1]);
                    399: 	# add parameters list to another stack
                    400: 	push (@$parstack,&parstring($token));
1.140     albertel  401: 	&increasedepth($token);
1.212     albertel  402: 	if ($Apache::lonxml::usestyle &&
                    403: 	    exists($$style_for_target{$token->[1]})) {
                    404: 	    $Apache::lonxml::usestyle=0;
                    405: 	    my $string=$$style_for_target{$token->[1]}.
                    406: 	      '<LONCAPA_INTERNAL_TURN_STYLE_ON />';
                    407: 	    &Apache::lonxml::newparser($pars,\$string);
1.257     albertel  408: 	    $Apache::lonxml::style_values=$$parstack[-1];
1.259     albertel  409: 	    $Apache::lonxml::style_end_values=$$parstack[-1];
1.101     albertel  410: 	} else {
                    411: 	  $result = &callsub("start_$token->[1]", $target, $token, $stack,
                    412: 			     $parstack, $pars, $safeeval, $style_for_target);
1.140     albertel  413: 	}
1.101     albertel  414:       } elsif ($token->[0] eq 'E') {
1.212     albertel  415: 	if ($Apache::lonxml::usestyle &&
                    416: 	    exists($$style_for_target{'/'."$token->[1]"})) {
                    417: 	    $Apache::lonxml::usestyle=0;
                    418: 	    my $string=$$style_for_target{'/'.$token->[1]}.
1.258     albertel  419: 	      '<LONCAPA_INTERNAL_TURN_STYLE_ON end="'.$token->[1].'" />';
1.212     albertel  420: 	    &Apache::lonxml::newparser($pars,\$string);
1.259     albertel  421: 	    $Apache::lonxml::style_values=$Apache::lonxml::style_end_values;
                    422: 	    $Apache::lonxml::style_end_values='';
1.258     albertel  423: 	    $dontpop=1;
1.101     albertel  424: 	} else {
1.258     albertel  425: 	    #clear out any tags that didn't end
                    426: 	    while ($token->[1] ne $$stack['-1'] && ($#$stack > -1)) {
                    427: 		my $lasttag=$$stack[-1];
1.317     albertel  428: 		if ($token->[1] =~ /^\Q$lasttag\E$/i) {
1.483     bisitz    429: 		    &Apache::lonxml::warning(&mt('Using tag [_1] on line [_2] as end tag to [_3]','&lt;/'.$token->[1].'&gt;','.$token->[3].','&lt;'.$$stack[-1].'&gt;'));
1.258     albertel  430: 		    last;
                    431: 		} else {
1.483     bisitz    432:                     &Apache::lonxml::warning(&mt('Found tag [_1] on line [_2] when looking for [_3] in file.','&lt;/'.$token->[1].'&gt;',$token->[3],'&lt;/'.$$stack[-1].'&gt;'));
1.258     albertel  433: 		    &end_tag($stack,$parstack,$token);
                    434: 		}
                    435: 	    }
                    436: 	    $result = &callsub("end_$token->[1]", $target, $token, $stack,
                    437: 			       $parstack, $pars,$safeeval, $style_for_target);
1.101     albertel  438: 	}
                    439:       } else {
                    440: 	&Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
                    441:       }
                    442:       #evaluate variable refs in result
1.282     albertel  443:       if ($Apache::lonxml::post_evaluate &&$result ne "") {
1.257     albertel  444: 	  my $extras;
                    445: 	  if (!$Apache::lonxml::usestyle) {
                    446: 	      $extras=$Apache::lonxml::style_values;
                    447: 	  }
1.488     raeburn   448: 	  if ( $#$parstack > -1 ) {
                    449: 	      $result=&Apache::run::evaluate($result,$safeeval,$extras.$$parstack[-1]);
                    450: 	  } else {
                    451: 	      $result= &Apache::run::evaluate($result,$safeeval,$extras);
1.487     raeburn   452:           }
1.163     albertel  453:       }
1.282     albertel  454:       $Apache::lonxml::post_evaluate=1;
                    455: 
1.190     albertel  456:       if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.249     albertel  457: 	  #Style file definitions should be correct
1.250     albertel  458: 	  if ($target eq 'tex' && ($Apache::lonxml::usestyle)) {
1.311     albertel  459: 	      $result=&latex_special_symbols($result);
1.249     albertel  460: 	  }
1.190     albertel  461:       }
                    462: 
1.169     albertel  463:       if ($Apache::lonxml::redirection) {
                    464: 	$Apache::lonxml::outputstack['-1'] .= $result;
                    465:       } else {
                    466: 	$finaloutput.=$result;
                    467:       }
                    468:       $result = '';
                    469: 
1.553     raeburn   470:       if ($token->[0] eq 'E') {
                    471:           if ($dontpop) {
                    472:               $lastdontpop = $token; 
                    473:           } else {
                    474:               $lastendtag = $token->[1];
                    475:               &end_tag($stack,$parstack,$token);
                    476:           }
1.101     albertel  477:       }
1.258     albertel  478:       $dontpop=0;
1.553     raeburn   479:     }
1.212     albertel  480:     if ($#$pars > -1) {
                    481: 	pop @$pars;
                    482: 	pop @Apache::lonxml::pwd;
                    483:     }
1.101     albertel  484:   }
                    485: 
1.553     raeburn   486:   if (($#$stack == 0) && ($stack->[0] eq 'physnet') && ($target eq 'web') && 
                    487:       ($lastendtag eq 'LONCAPA_INTERNAL_TURN_STYLE_ON')) {
                    488:        if ((ref($lastdontpop) eq 'ARRAY') && ($lastdontpop->[1] eq 'physnet')) {
                    489:            &end_tag($stack,$parstack,$lastdontpop);
                    490:        }
                    491:    }
                    492: 
1.101     albertel  493:   # if ($target eq 'meta') {
                    494:   #   $finaloutput.=&endredirection;
                    495:   # }
                    496: 
1.394     albertel  497:   if ( $start && $target eq 'grade') { &endredirection(); }
1.389     albertel  498:   if ( $Apache::lonxml::redirection > $startredirection) {
                    499:       while ($Apache::lonxml::redirection > $startredirection) {
                    500: 	  $finaloutput .= &endredirection();
1.387     albertel  501:       }
                    502:   }
1.101     albertel  503:   if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
                    504:     $finaloutput=&afterburn($finaloutput);
1.509     www       505:   }
                    506:   if ($target eq 'modified') {
                    507: # if modfied, handle startpart and endpart
                    508:      $finaloutput=~s/\<startpartmarker[^\>]*\>(.*)\<endpartmarker[^\>]*\>/<part>$1<\/part>/gs;
1.216     sakharuk  509:   }	    
1.101     albertel  510:   return $finaloutput;
                    511: }
1.67      www       512: 
1.318     matthew   513: ## 
                    514: ## Looks to see if there is a subroutine defined for this tag.  If so, call it,
                    515: ## otherwise do not call it as we do not know what it is.
                    516: ##
1.7       albertel  517: sub callsub {
1.84      albertel  518:   my ($sub,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.7       albertel  519:   my $currentstring='';
1.72      albertel  520:   my $nodefault;
1.7       albertel  521:   {
1.59      albertel  522:     my $sub1;
1.7       albertel  523:     no strict 'refs';
1.68      www       524:     my $tag=$token->[1];
1.236     www       525: # get utterly rid of extended html tags
                    526:     if ($tag=~/^x\-/i) { return ''; }
1.141     albertel  527:     my $space=$Apache::lonxml::alltags{$tag}[-1];
1.68      www       528:     if (!$space) {
1.141     albertel  529:      	$tag=~tr/A-Z/a-z/;
1.68      www       530: 	$sub=~tr/A-Z/a-z/;
1.141     albertel  531: 	$space=$Apache::lonxml::alltags{$tag}[-1]
1.68      www       532:     }
1.97      albertel  533: 
                    534:     my $deleted=0;
                    535:     if (($token->[0] eq 'S') && ($target eq 'modified')) {
                    536:       $deleted=&Apache::edit::handle_delete($space,$target,$token,$tagstack,
                    537: 					     $parstack,$parser,$safeeval,
                    538: 					     $style);
                    539:     }
                    540:     if (!$deleted) {
                    541:       if ($space) {
1.220     albertel  542: 	#&Apache::lonxml::debug("Calling sub $sub in $space $metamode");
1.97      albertel  543: 	$sub1="$space\:\:$sub";
                    544: 	($currentstring,$nodefault) = &$sub1($target,$token,$tagstack,
                    545: 					     $parstack,$parser,$safeeval,
                    546: 					     $style);
                    547:       } else {
1.318     matthew   548:           if ($target eq 'tex') {
                    549:               # throw away tag name
                    550:               return '';
                    551:           }
1.220     albertel  552: 	#&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode");
1.97      albertel  553: 	if ($metamode <1) {
                    554: 	  if (defined($token->[4]) && ($metamode < 1)) {
                    555: 	    $currentstring = $token->[4];
                    556: 	  } else {
                    557: 	    $currentstring = $token->[2];
                    558: 	  }
1.62      sakharuk  559: 	}
1.7       albertel  560:       }
1.97      albertel  561:       #    &Apache::lonxml::debug("nodefalt:$nodefault:");
                    562:       if ($currentstring eq '' && $nodefault eq '') {
                    563: 	if ($target eq 'edit') {
1.220     albertel  564: 	  #&Apache::lonxml::debug("doing default edit for $token->[1]");
1.97      albertel  565: 	  if ($token->[0] eq 'S') {
                    566: 	    $currentstring = &Apache::edit::tag_start($target,$token);
                    567: 	  } elsif ($token->[0] eq 'E') {
                    568: 	    $currentstring = &Apache::edit::tag_end($target,$token);
                    569: 	  }
1.441     albertel  570: 	}
                    571:       }
                    572:       if ($target eq 'modified' && $nodefault eq '') {
                    573: 	  if ($currentstring eq '') {
                    574: 	      if ($token->[0] eq 'S') {
                    575: 		  $currentstring = $token->[4];
                    576: 	      } elsif ($token->[0] eq 'E') {
                    577: 		  $currentstring = $token->[2];
                    578: 	      } else {
                    579: 		  $currentstring = $token->[2];
                    580: 	      }
                    581: 	  }
1.97      albertel  582: 	  if ($token->[0] eq 'S') {
1.447     albertel  583: 	      $currentstring.=&Apache::edit::handle_insert();
1.210     www       584: 	  } elsif ($token->[0] eq 'E') {
1.447     albertel  585: 	      $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
1.97      albertel  586: 	  }
1.72      albertel  587:       }
1.7       albertel  588:     }
                    589:     use strict 'refs';
                    590:   }
                    591:   return $currentstring;
1.82      ng        592: }
                    593: 
1.465     albertel  594: {
                    595:     my %state;
                    596: 
                    597:     sub init_state {
                    598: 	undef(%state);
                    599:     }
                    600:     
                    601:     sub set_state {
                    602: 	my ($key,$value) = @_;
                    603: 	$state{$key} = $value;
                    604: 	return $value;
                    605:     }
                    606:     sub get_state {
                    607: 	my ($key) = @_;
                    608: 	return $state{$key};
                    609:     }
                    610: }
                    611: 
1.96      albertel  612: sub setup_globals {
1.172     albertel  613:   my ($request,$target)=@_;
                    614:   $Apache::lonxml::request=$request;
1.205     www       615:   $errorcount=0;
                    616:   $warningcount=0;
1.490     www       617:   $Apache::lonxml::internal_error=0;
1.207     albertel  618:   $Apache::lonxml::default_homework_loaded=0;
1.212     albertel  619:   $Apache::lonxml::usestyle=1;
1.204     albertel  620:   &init_counter();
1.462     foxr      621:   &clear_bubble_lines_for_part();
1.465     albertel  622:   &init_state();
1.469     albertel  623:   &set_state('target',$target);
1.101     albertel  624:   @Apache::lonxml::pwd=();
1.124     albertel  625:   @Apache::lonxml::extlinks=();
1.448     albertel  626:   @script_var_displays=();
1.281     albertel  627:   @Apache::lonxml::ssi_info=();
1.282     albertel  628:   $Apache::lonxml::post_evaluate=1;
1.295     albertel  629:   $Apache::lonxml::warnings_error_header='';
1.397     albertel  630:   $Apache::lonxml::substitute_LaTeX_symbols = 1;
1.96      albertel  631:   if ($target eq 'meta') {
                    632:     $Apache::lonxml::redirection = 0;
                    633:     $Apache::lonxml::metamode = 1;
                    634:     $Apache::lonxml::evaluate = 1;
                    635:     $Apache::lonxml::import = 0;
1.129     albertel  636:   } elsif ($target eq 'answer') {
                    637:     $Apache::lonxml::redirection = 0;
                    638:     $Apache::lonxml::metamode = 1;
                    639:     $Apache::lonxml::evaluate = 1;
                    640:     $Apache::lonxml::import = 1;
1.96      albertel  641:   } elsif ($target eq 'grade') {
1.387     albertel  642:     &startredirection(); #ended in inner_xmlparse on exit
1.96      albertel  643:     $Apache::lonxml::metamode = 0;
                    644:     $Apache::lonxml::evaluate = 1;
                    645:     $Apache::lonxml::import = 1;
                    646:   } elsif ($target eq 'modified') {
                    647:     $Apache::lonxml::redirection = 0;
                    648:     $Apache::lonxml::metamode = 0;
                    649:     $Apache::lonxml::evaluate = 0;
                    650:     $Apache::lonxml::import = 0;
                    651:   } elsif ($target eq 'edit') {
                    652:     $Apache::lonxml::redirection = 0;
                    653:     $Apache::lonxml::metamode = 0;
                    654:     $Apache::lonxml::evaluate = 0;
                    655:     $Apache::lonxml::import = 0;
1.163     albertel  656:   } elsif ($target eq 'analyze') {
                    657:     $Apache::lonxml::redirection = 0;
                    658:     $Apache::lonxml::metamode = 0;
                    659:     $Apache::lonxml::evaluate = 1;
                    660:     $Apache::lonxml::import = 1;
1.96      albertel  661:   } else {
                    662:     $Apache::lonxml::redirection = 0;
                    663:     $Apache::lonxml::metamode = 0;
                    664:     $Apache::lonxml::evaluate = 1;
                    665:     $Apache::lonxml::import = 1;
                    666:   }
                    667: }
                    668: 
1.82      ng        669: sub init_safespace {
                    670:   my ($target,$safeeval,$safehole,$safeinit) = @_;
1.511     foxr      671:   $safeeval->reval('use LaTeX::Table;');
1.393     albertel  672:   $safeeval->deny_only(':dangerous');
1.544     raeburn   673:   $safeeval->reval('use LONCAPA::LCMathComplex;');
1.383     albertel  674:   $safeeval->permit_only(":default");
1.82      ng        675:   $safeeval->permit("entereval");
                    676:   $safeeval->permit(":base_math");
                    677:   $safeeval->permit("sort");
1.286     albertel  678:   $safeeval->permit("time");
1.480     www       679:   $safeeval->permit("caller");
1.371     albertel  680:   $safeeval->deny("rand");
                    681:   $safeeval->deny("srand");
1.82      ng        682:   $safeeval->deny(":base_io");
1.102     albertel  683:   $safehole->wrap(\&Apache::scripttag::xmlparse,$safeeval,'&xmlparse');
1.251     albertel  684:   $safehole->wrap(\&Apache::outputtags::multipart,$safeeval,'&multipart');
1.82      ng        685:   $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.324     albertel  686:   $safehole->wrap(\&Apache::chemresponse::chem_standard_order,$safeeval,
                    687: 		  '&chem_standard_order');
1.369     albertel  688:   $safehole->wrap(\&Apache::response::check_status,$safeeval,'&check_status');
1.471     bisitz    689:   $safehole->wrap(\&Apache::response::implicit_multiplication,$safeeval,'&implicit_multiplication');
1.324     albertel  690: 
1.431     www       691:   $safehole->wrap(\&Apache::lonmaxima::maxima_eval,$safeeval,'&maxima_eval');
1.432     www       692:   $safehole->wrap(\&Apache::lonmaxima::maxima_check,$safeeval,'&maxima_check');
1.433     albertel  693:   $safehole->wrap(\&Apache::lonmaxima::maxima_cas_formula_fix,$safeeval,
                    694: 		  '&maxima_cas_formula_fix');
                    695: 
1.494     www       696:   $safehole->wrap(\&Apache::lonr::r_eval,$safeeval,'&r_eval');
1.497     www       697:   $safehole->wrap(\&Apache::lonr::Rentry,$safeeval,'&Rentry');
                    698:   $safehole->wrap(\&Apache::lonr::Rarray,$safeeval,'&Rarray');
1.494     www       699:   $safehole->wrap(\&Apache::lonr::r_check,$safeeval,'&r_check');
                    700:   $safehole->wrap(\&Apache::lonr::r_cas_formula_fix,$safeeval,
                    701:                   '&r_cas_formula_fix');
                    702:  
1.433     albertel  703:   $safehole->wrap(\&Apache::caparesponse::capa_formula_fix,$safeeval,
                    704: 		  '&capa_formula_fix');
1.431     www       705: 
1.480     www       706:   $safehole->wrap(\&Apache::lonlocal::locallocaltime,$safeeval,
                    707:                   '&locallocaltime');
                    708: 
1.82      ng        709:   $safehole->wrap(\&Math::Cephes::asin,$safeeval,'&asin');
                    710:   $safehole->wrap(\&Math::Cephes::acos,$safeeval,'&acos');
                    711:   $safehole->wrap(\&Math::Cephes::atan,$safeeval,'&atan');
                    712:   $safehole->wrap(\&Math::Cephes::sinh,$safeeval,'&sinh');
                    713:   $safehole->wrap(\&Math::Cephes::cosh,$safeeval,'&cosh');
                    714:   $safehole->wrap(\&Math::Cephes::tanh,$safeeval,'&tanh');
                    715:   $safehole->wrap(\&Math::Cephes::asinh,$safeeval,'&asinh');
                    716:   $safehole->wrap(\&Math::Cephes::acosh,$safeeval,'&acosh');
                    717:   $safehole->wrap(\&Math::Cephes::atanh,$safeeval,'&atanh');
                    718:   $safehole->wrap(\&Math::Cephes::erf,$safeeval,'&erf');
                    719:   $safehole->wrap(\&Math::Cephes::erfc,$safeeval,'&erfc');
                    720:   $safehole->wrap(\&Math::Cephes::j0,$safeeval,'&j0');
                    721:   $safehole->wrap(\&Math::Cephes::j1,$safeeval,'&j1');
                    722:   $safehole->wrap(\&Math::Cephes::jn,$safeeval,'&jn');
                    723:   $safehole->wrap(\&Math::Cephes::jv,$safeeval,'&jv');
                    724:   $safehole->wrap(\&Math::Cephes::y0,$safeeval,'&y0');
                    725:   $safehole->wrap(\&Math::Cephes::y1,$safeeval,'&y1');
                    726:   $safehole->wrap(\&Math::Cephes::yn,$safeeval,'&yn');
                    727:   $safehole->wrap(\&Math::Cephes::yv,$safeeval,'&yv');
1.215     albertel  728:   
                    729:   $safehole->wrap(\&Math::Cephes::bdtr  ,$safeeval,'&bdtr'  );
                    730:   $safehole->wrap(\&Math::Cephes::bdtrc ,$safeeval,'&bdtrc' );
                    731:   $safehole->wrap(\&Math::Cephes::bdtri ,$safeeval,'&bdtri' );
                    732:   $safehole->wrap(\&Math::Cephes::btdtr ,$safeeval,'&btdtr' );
                    733:   $safehole->wrap(\&Math::Cephes::chdtr ,$safeeval,'&chdtr' );
                    734:   $safehole->wrap(\&Math::Cephes::chdtrc,$safeeval,'&chdtrc');
                    735:   $safehole->wrap(\&Math::Cephes::chdtri,$safeeval,'&chdtri');
                    736:   $safehole->wrap(\&Math::Cephes::fdtr  ,$safeeval,'&fdtr'  );
                    737:   $safehole->wrap(\&Math::Cephes::fdtrc ,$safeeval,'&fdtrc' );
                    738:   $safehole->wrap(\&Math::Cephes::fdtri ,$safeeval,'&fdtri' );
                    739:   $safehole->wrap(\&Math::Cephes::gdtr  ,$safeeval,'&gdtr'  );
                    740:   $safehole->wrap(\&Math::Cephes::gdtrc ,$safeeval,'&gdtrc' );
                    741:   $safehole->wrap(\&Math::Cephes::nbdtr ,$safeeval,'&nbdtr' );
                    742:   $safehole->wrap(\&Math::Cephes::nbdtrc,$safeeval,'&nbdtrc');
                    743:   $safehole->wrap(\&Math::Cephes::nbdtri,$safeeval,'&nbdtri');
                    744:   $safehole->wrap(\&Math::Cephes::ndtr  ,$safeeval,'&ndtr'  );
                    745:   $safehole->wrap(\&Math::Cephes::ndtri ,$safeeval,'&ndtri' );
                    746:   $safehole->wrap(\&Math::Cephes::pdtr  ,$safeeval,'&pdtr'  );
                    747:   $safehole->wrap(\&Math::Cephes::pdtrc ,$safeeval,'&pdtrc' );
                    748:   $safehole->wrap(\&Math::Cephes::pdtri ,$safeeval,'&pdtri' );
                    749:   $safehole->wrap(\&Math::Cephes::stdtr ,$safeeval,'&stdtr' );
                    750:   $safehole->wrap(\&Math::Cephes::stdtri,$safeeval,'&stdtri');
                    751: 
1.383     albertel  752:   $safehole->wrap(\&Math::Cephes::Matrix::mat,$safeeval,'&mat');
                    753:   $safehole->wrap(\&Math::Cephes::Matrix::new,$safeeval,
                    754: 		  '&Math::Cephes::Matrix::new');
                    755:   $safehole->wrap(\&Math::Cephes::Matrix::coef,$safeeval,
                    756: 		  '&Math::Cephes::Matrix::coef');
                    757:   $safehole->wrap(\&Math::Cephes::Matrix::clr,$safeeval,
                    758: 		  '&Math::Cephes::Matrix::clr');
                    759:   $safehole->wrap(\&Math::Cephes::Matrix::add,$safeeval,
                    760: 		  '&Math::Cephes::Matrix::add');
                    761:   $safehole->wrap(\&Math::Cephes::Matrix::sub,$safeeval,
                    762: 		  '&Math::Cephes::Matrix::sub');
                    763:   $safehole->wrap(\&Math::Cephes::Matrix::mul,$safeeval,
                    764: 		  '&Math::Cephes::Matrix::mul');
                    765:   $safehole->wrap(\&Math::Cephes::Matrix::div,$safeeval,
                    766: 		  '&Math::Cephes::Matrix::div');
                    767:   $safehole->wrap(\&Math::Cephes::Matrix::inv,$safeeval,
                    768: 		  '&Math::Cephes::Matrix::inv');
                    769:   $safehole->wrap(\&Math::Cephes::Matrix::transp,$safeeval,
                    770: 		  '&Math::Cephes::Matrix::transp');
                    771:   $safehole->wrap(\&Math::Cephes::Matrix::simq,$safeeval,
                    772: 		  '&Math::Cephes::Matrix::simq');
                    773:   $safehole->wrap(\&Math::Cephes::Matrix::mat_to_vec,$safeeval,
                    774: 		  '&Math::Cephes::Matrix::mat_to_vec');
                    775:   $safehole->wrap(\&Math::Cephes::Matrix::vec_to_mat,$safeeval,
                    776: 		  '&Math::Cephes::Matrix::vec_to_mat');
                    777:   $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
                    778: 		  '&Math::Cephes::Matrix::check');
                    779:   $safehole->wrap(\&Math::Cephes::Matrix::check,$safeeval,
                    780: 		  '&Math::Cephes::Matrix::check');
                    781: 
1.215     albertel  782: #  $safehole->wrap(\&Math::Cephes::new_fract,$safeeval,'&new_fract');
                    783: #  $safehole->wrap(\&Math::Cephes::radd,$safeeval,'&radd');
                    784: #  $safehole->wrap(\&Math::Cephes::rsub,$safeeval,'&rsub');
                    785: #  $safehole->wrap(\&Math::Cephes::rmul,$safeeval,'&rmul');
                    786: #  $safehole->wrap(\&Math::Cephes::rdiv,$safeeval,'&rdiv');
                    787: #  $safehole->wrap(\&Math::Cephes::euclid,$safeeval,'&euclid');
                    788: 
1.91      ng        789:   $safehole->wrap(\&Math::Random::random_beta,$safeeval,'&math_random_beta');
                    790:   $safehole->wrap(\&Math::Random::random_chi_square,$safeeval,'&math_random_chi_square');
                    791:   $safehole->wrap(\&Math::Random::random_exponential,$safeeval,'&math_random_exponential');
                    792:   $safehole->wrap(\&Math::Random::random_f,$safeeval,'&math_random_f');
                    793:   $safehole->wrap(\&Math::Random::random_gamma,$safeeval,'&math_random_gamma');
                    794:   $safehole->wrap(\&Math::Random::random_multivariate_normal,$safeeval,'&math_random_multivariate_normal');
                    795:   $safehole->wrap(\&Math::Random::random_multinomial,$safeeval,'&math_random_multinomial');
                    796:   $safehole->wrap(\&Math::Random::random_noncentral_chi_square,$safeeval,'&math_random_noncentral_chi_square');
                    797:   $safehole->wrap(\&Math::Random::random_noncentral_f,$safeeval,'&math_random_noncentral_f');
                    798:   $safehole->wrap(\&Math::Random::random_normal,$safeeval,'&math_random_normal');
                    799:   $safehole->wrap(\&Math::Random::random_permutation,$safeeval,'&math_random_permutation');
1.93      ng        800:   $safehole->wrap(\&Math::Random::random_permuted_index,$safeeval,'&math_random_permuted_index');
1.91      ng        801:   $safehole->wrap(\&Math::Random::random_uniform,$safeeval,'&math_random_uniform');
                    802:   $safehole->wrap(\&Math::Random::random_poisson,$safeeval,'&math_random_poisson');
                    803:   $safehole->wrap(\&Math::Random::random_uniform_integer,$safeeval,'&math_random_uniform_integer');
                    804:   $safehole->wrap(\&Math::Random::random_negative_binomial,$safeeval,'&math_random_negative_binomial');
                    805:   $safehole->wrap(\&Math::Random::random_binomial,$safeeval,'&math_random_binomial');
                    806:   $safehole->wrap(\&Math::Random::random_seed_from_phrase,$safeeval,'&random_seed_from_phrase');
                    807:   $safehole->wrap(\&Math::Random::random_set_seed_from_phrase,$safeeval,'&random_set_seed_from_phrase');
                    808:   $safehole->wrap(\&Math::Random::random_get_seed,$safeeval,'&random_get_seed');
                    809:   $safehole->wrap(\&Math::Random::random_set_seed,$safeeval,'&random_set_seed');
1.458     albertel  810:   $safehole->wrap(\&Apache::loncommon::languages,$safeeval,'&languages');
1.305     albertel  811:   $safehole->wrap(\&Apache::lonxml::error,$safeeval,'&LONCAPA_INTERNAL_ERROR');
1.311     albertel  812:   $safehole->wrap(\&Apache::lonxml::debug,$safeeval,'&LONCAPA_INTERNAL_DEBUG');
1.420     albertel  813:   $safehole->wrap(\&Apache::lonnet::logthis,$safeeval,'&LONCAPA_INTERNAL_LOGTHIS');
                    814:   $safehole->wrap(\&Apache::inputtags::finalizeawards,$safeeval,'&LONCAPA_INTERNAL_FINALIZEAWARDS');
1.322     albertel  815:   $safehole->wrap(\&Apache::caparesponse::get_sigrange,$safeeval,'&LONCAPA_INTERNAL_get_sigrange');
1.521     www       816:   $safehole->wrap(\&Apache::functionplotresponse::fpr_val,$safeeval,'&fpr_val');
1.520     www       817:   $safehole->wrap(\&Apache::functionplotresponse::fpr_f,$safeeval,'&fpr_f');
                    818:   $safehole->wrap(\&Apache::functionplotresponse::fpr_dfdx,$safeeval,'&fpr_dfdx');
                    819:   $safehole->wrap(\&Apache::functionplotresponse::fpr_d2fdx2,$safeeval,'&fpr_d2fdx2');
1.524     www       820:   $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorcoords,$safeeval,'&fpr_vectorcoords');
                    821:   $safehole->wrap(\&Apache::functionplotresponse::fpr_objectcoords,$safeeval,'&fpr_objectcoords');
                    822:   $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorlength,$safeeval,'&fpr_vectorlength');
                    823:   $safehole->wrap(\&Apache::functionplotresponse::fpr_vectorangle,$safeeval,'&fpr_vectorangle');
1.558     raeburn   824:   $safehole->wrap(\&Math::Calculus::Expression::math_calculus_expression,$safeeval,'&math_calculus_expression');
1.560     raeburn   825:   $safehole->wrap(\&Number::FormatEng::format_eng,$safeeval,'&number_format_eng');
                    826:   $safehole->wrap(\&Number::FormatEng::format_pref,$safeeval,'&number_format_pref');
1.520     www       827: 
1.430     albertel  828: #  use Data::Dumper;
                    829: #  $safehole->wrap(\&Data::Dumper::Dumper,$safeeval,'&LONCAPA_INTERNAL_Dumper');
1.82      ng        830: #need to inspect this class of ops
                    831: # $safeeval->deny(":base_orig");
1.331     albertel  832:   $safeeval->permit("require");
1.91      ng        833:   $safeinit .= ';$external::target="'.$target.'";';
1.82      ng        834:   &Apache::run::run($safeinit,$safeeval);
1.552     raeburn   835:   my $rawrndseed = &initialize_rndseed($safeeval);
                    836:   if ($target eq 'grade') {
                    837:       $Apache::lonhomework::rawrndseed = $rawrndseed;
                    838:   }
1.373     albertel  839: }
1.303     albertel  840: 
1.393     albertel  841: sub clean_safespace {
                    842:     my ($safeeval) = @_;
                    843:     delete_package_recurse($safeeval->{Root});
                    844: }
                    845: 
                    846: sub delete_package_recurse {
                    847:      my ($package) = @_;
                    848:      my @subp;
                    849:      {
                    850: 	 no strict 'refs';
                    851: 	 while (my ($key,$val) = each(%{*{"$package\::"}})) {
                    852: 	     if (!defined($val)) { next; }
                    853: 	     local (*ENTRY) = $val;
                    854: 	     if (defined *ENTRY{HASH} && $key =~ /::$/ &&
                    855: 		 $key ne "main::" && $key ne "<none>::")
                    856: 	     {
                    857: 		 my ($p) = $package ne "main" ? "$package\::" : "";
                    858: 		 ($p .= $key) =~ s/::$//;
                    859: 		 push(@subp,$p);
                    860: 	     }
                    861: 	 }
                    862:      }
                    863:      foreach my $p (@subp) {
                    864: 	 delete_package_recurse($p);
                    865:      }
                    866:      Symbol::delete_package($package);
                    867: }
                    868: 
1.373     albertel  869: sub initialize_rndseed {
                    870:     my ($safeeval)=@_;
                    871:     my $rndseed;
1.423     albertel  872:     my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.373     albertel  873:     $rndseed=&Apache::lonnet::rndseed($symb,$courseid,$domain,$name);
                    874:     my $safeinit = '$external::randomseed="'.$rndseed.'";';
                    875:     &Apache::lonxml::debug("Setting rndseed to $rndseed");
                    876:     &Apache::run::run($safeinit,$safeeval);
1.552     raeburn   877:     return $rndseed;
1.207     albertel  878: }
                    879: 
                    880: sub default_homework_load {
                    881:     my ($safeeval)=@_;
                    882:     &Apache::lonxml::debug('Loading default_homework');
1.522     raeburn   883:     my $default=&Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonIncludes'}.
                    884:                                          '/default_homework.lcpm');
1.241     albertel  885:     if ($default eq -1) {
1.207     albertel  886: 	&Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
                    887:     } else {
                    888: 	&Apache::run::run($default,$safeeval);
                    889: 	$Apache::lonxml::default_homework_loaded=1;
                    890:     }
1.17      albertel  891: }
                    892: 
1.358     albertel  893: {
                    894:     my $alarm_depth;
                    895:     sub init_alarm {
                    896: 	alarm(0);
                    897: 	$alarm_depth=0;
                    898:     }
                    899: 
                    900:     sub start_alarm {
                    901: 	if ($alarm_depth<1) {
                    902: 	    my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
                    903: 	    if ($old) {
                    904: 		&Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
                    905: 	    }
                    906: 	}
                    907: 	$alarm_depth++;
                    908:     }
                    909: 
                    910:     sub end_alarm {
                    911: 	$alarm_depth--;
                    912: 	if ($alarm_depth<1) { alarm(0); }
                    913:     }
                    914: }
1.328     albertel  915: my $metamode_was;
1.55      albertel  916: sub startredirection {
1.328     albertel  917:     if (!$Apache::lonxml::redirection) {
                    918: 	$metamode_was=$Apache::lonxml::metamode;
                    919:     }
                    920:     $Apache::lonxml::metamode=0;
                    921:     $Apache::lonxml::redirection++;
                    922:     push (@Apache::lonxml::outputstack, '');
1.55      albertel  923: }
                    924: 
                    925: sub endredirection {
1.328     albertel  926:     if (!$Apache::lonxml::redirection) {
1.380     www       927: 	&Apache::lonxml::error("Endredirection was called before a startredirection, perhaps you have unbalanced tags. Some debugging information:".join ":",caller);
1.328     albertel  928: 	return '';
                    929:     }
                    930:     $Apache::lonxml::redirection--;
                    931:     if (!$Apache::lonxml::redirection) {
                    932: 	$Apache::lonxml::metamode=$metamode_was;
                    933:     }
                    934:     pop @Apache::lonxml::outputstack;
1.97      albertel  935: }
1.459     albertel  936: sub in_redirection {
                    937:     return ($Apache::lonxml::redirection > 0)
                    938: }
1.97      albertel  939: 
                    940: sub end_tag {
                    941:   my ($tagstack,$parstack,$token)=@_;
                    942:   pop(@$tagstack);
                    943:   pop(@$parstack);
                    944:   &decreasedepth($token);
1.55      albertel  945: }
                    946: 
1.17      albertel  947: sub initdepth {
                    948:   @Apache::lonxml::depthcounter=();
1.439     albertel  949:   undef($Apache::lonxml::last_depth_count);
1.17      albertel  950: }
                    951: 
1.438     albertel  952: 
1.339     albertel  953: my @timers;
                    954: my $lasttime;
1.438     albertel  955: # @Apache::lonxml::depthcounter -> count of tags that exist so
                    956: #                                  far at each level
1.439     albertel  957: # $Apache::lonxml::last_depth_count -> when ascending, need to
                    958: # remember the count for the level below the current level (for
                    959: # example going from 1_2 -> 1 -> 1_3 need to remember the 2 )
1.438     albertel  960: 
1.17      albertel  961: sub increasedepth {
1.19      albertel  962:   my ($token) = @_;
1.439     albertel  963:   push(@Apache::lonxml::depthcounter,$Apache::lonxml::last_depth_count+1);
                    964:   undef($Apache::lonxml::last_depth_count);
1.340     albertel  965:   my $time;
                    966:   if ($Apache::lonxml::debug eq "1") {
                    967:       push(@timers,[&gettimeofday()]);
                    968:       $time=&tv_interval($lasttime);
                    969:       $lasttime=[&gettimeofday()];
                    970:   }
1.439     albertel  971:   my $spacing='  'x($#Apache::lonxml::depthcounter);
1.438     albertel  972:   $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
1.439     albertel  973: #  &Apache::lonxml::debug("s$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time");
1.54      albertel  974: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17      albertel  975: }
                    976: 
                    977: sub decreasedepth {
1.19      albertel  978:   my ($token) = @_;
1.439     albertel  979:   if (  $#Apache::lonxml::depthcounter == -1) {
                    980:       &Apache::lonxml::warning(&mt("Missing tags, unable to properly run file."));
1.43      albertel  981:   }
1.439     albertel  982:   $Apache::lonxml::last_depth_count = pop(@Apache::lonxml::depthcounter);
                    983: 
1.340     albertel  984:   my ($timer,$time);
                    985:   if ($Apache::lonxml::debug eq "1") {
                    986:       $timer=pop(@timers);
                    987:       $time=&tv_interval($lasttime);
                    988:       $lasttime=[&gettimeofday()];
                    989:   }
1.439     albertel  990:   my $spacing='  'x($#Apache::lonxml::depthcounter);
                    991:   $Apache::lonxml::curdepth = join('_',@Apache::lonxml::depthcounter);
                    992: #  &Apache::lonxml::debug("e$spacing$Apache::lonxml::depth : $Apache::lonxml::olddepth : $Apache::lonxml::curdepth : $token->[1] : $time : ".&tv_interval($timer));
1.54      albertel  993: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1       sakharuk  994: }
1.19      albertel  995: 
1.399     albertel  996: sub get_id {
                    997:     my ($parstack,$safeeval)=@_;
                    998:     my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
1.557     damieng   999:     if ($env{'request.state'} eq 'construct' && $id =~ /([._]|[^\w\s\-])/) {
1.498     bisitz   1000: 	&error(&mt('ID [_1] contains invalid characters. IDs are only allowed to contain letters, numbers, spaces and -','"<tt>'.$id.'</tt>"'));
1.399     albertel 1001:     }
                   1002:     if ($id =~ /^\s*$/) { $id = $Apache::lonxml::curdepth; }
                   1003:     return $id;
                   1004: }
                   1005: 
1.180     albertel 1006: sub get_all_text_unbalanced {
1.190     albertel 1007: #there is a copy of this in lonpublisher.pm
1.326     albertel 1008:     my($tag,$pars)= @_;
                   1009:     my $token;
                   1010:     my $result='';
                   1011:     $tag='<'.$tag.'>';
                   1012:     while ($token = $$pars[-1]->get_token) {
                   1013: 	if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.386     albertel 1014: 	    if ($token->[0] eq 'T' && $token->[2]) {
1.382     albertel 1015: 		$result.='<![CDATA['.$token->[1].']]>';
                   1016: 	    } else {
                   1017: 		$result.=$token->[1];
                   1018: 	    }
1.326     albertel 1019: 	} elsif ($token->[0] eq 'PI') {
                   1020: 	    $result.=$token->[2];
                   1021: 	} elsif ($token->[0] eq 'S') {
                   1022: 	    $result.=$token->[4];
                   1023: 	} elsif ($token->[0] eq 'E')  {
                   1024: 	    $result.=$token->[2];
                   1025: 	}
                   1026: 	if ($result =~ /\Q$tag\E/is) {
                   1027: 	    ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
                   1028: 	    #&Apache::lonxml::debug('Got a winner with leftovers ::'.$2);
                   1029: 	    #&Apache::lonxml::debug('Result is :'.$1);
                   1030: 	    $redo=$tag.$redo;
                   1031: 	    &Apache::lonxml::newparser($pars,\$redo);
                   1032: 	    last;
                   1033: 	}
                   1034:     }
                   1035:     return $result
1.462     foxr     1036: 
1.204     albertel 1037: }
                   1038: 
1.462     foxr     1039: #########################################################################
                   1040: #                                                                       #
                   1041: #           bubble line counter management                              #
                   1042: #                                                                       #
                   1043: #########################################################################
                   1044: 
1.447     albertel 1045: =pod
                   1046: 
                   1047: For bubble grading mode and exam bubble printing mode, the tracking of
                   1048: the current 'bubble line number' is stored in the %env element
                   1049: 'form.counter', and is modifed and handled by the following routines.
                   1050: 
                   1051: The value of it is stored in $Apache:lonxml::counter when live and
                   1052: stored back to env after done.
                   1053: 
1.522     raeburn  1054: =item &increment_counter($increment, $part_response);
1.447     albertel 1055: 
                   1056: Increments the internal counter environment variable a specified amount
                   1057: 
                   1058: Optional Arguments:
                   1059:   $increment - amount to increment by (defaults to 1)
1.462     foxr     1060:                Also 1 if the value is negative or zero.
1.467     foxr     1061:   $part_response - A concatenation of the part and response id
                   1062:                    identifying exactly what is being 'answered'.
                   1063: 
1.447     albertel 1064: 
                   1065: =cut
                   1066: 
1.204     albertel 1067: sub increment_counter {
1.467     foxr     1068:     my ($increment, $part_response) = @_;
1.481     raeburn  1069:     if ($env{'form.grade_noincrement'}) { return; }
1.462     foxr     1070:     if (!defined($increment) || $increment le 0) {
                   1071: 	$increment = 1;
                   1072:     }
                   1073:     $Apache::lonxml::counter += $increment;
                   1074: 
1.466     foxr     1075:     # If the caller supplied the response_id parameter, 
1.462     foxr     1076:     # Maintain its counter.. creating if necessary.
                   1077: 
1.470     albertel 1078:     if (defined($part_response)) {
1.467     foxr     1079: 	if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
                   1080: 	    $Apache::lonxml::counters_per_part{$part_response} = 0;
1.462     foxr     1081: 	}
1.467     foxr     1082: 	$Apache::lonxml::counters_per_part{$part_response} += $increment;
                   1083: 	my $new_value = $Apache::lonxml::counters_per_part{$part_response};
1.247     albertel 1084:     }
1.462     foxr     1085: 	
1.289     sakharuk 1086:     $Apache::lonxml::counter_changed=1;
1.204     albertel 1087: }
                   1088: 
1.447     albertel 1089: =pod
                   1090: 
1.461     foxr     1091: =item &init_counter($increment);
1.447     albertel 1092: 
                   1093: Initialize the internal counter environment variable
                   1094: 
                   1095: =cut
                   1096: 
1.204     albertel 1097: sub init_counter {
1.391     albertel 1098:     if ($env{'request.state'} eq 'construct') {
                   1099: 	$Apache::lonxml::counter=1;
                   1100: 	$Apache::lonxml::counter_changed=1;
                   1101:     } elsif (defined($env{'form.counter'})) {
1.372     albertel 1102: 	$Apache::lonxml::counter=$env{'form.counter'};
1.247     albertel 1103: 	$Apache::lonxml::counter_changed=0;
1.237     sakharuk 1104:     } else {
1.204     albertel 1105: 	$Apache::lonxml::counter=1;
1.247     albertel 1106: 	$Apache::lonxml::counter_changed=1;
1.204     albertel 1107:     }
                   1108: }
                   1109: 
                   1110: sub store_counter {
1.474     raeburn  1111:     &Apache::lonnet::appenv({'form.counter' => $Apache::lonxml::counter});
1.401     albertel 1112:     $Apache::lonxml::counter_changed=0;
1.204     albertel 1113:     return '';
1.180     albertel 1114: }
                   1115: 
1.398     albertel 1116: {
                   1117:     my $state;
                   1118:     sub clear_problem_counter {
                   1119: 	undef($state);
                   1120: 	&Apache::lonnet::delenv('form.counter');
                   1121: 	&Apache::lonxml::init_counter();
                   1122: 	&Apache::lonxml::store_counter();
                   1123:     }
                   1124: 
                   1125:     sub remember_problem_counter {
1.422     albertel 1126: 	&Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.398     albertel 1127: 	$state = $env{'form.counter'};
                   1128:     }
                   1129: 
                   1130:     sub restore_problem_counter {
                   1131: 	if (defined($state)) {
1.474     raeburn  1132: 	    &Apache::lonnet::appenv({'form.counter' => $state});
1.398     albertel 1133: 	}
                   1134:     }
1.401     albertel 1135:     sub get_problem_counter {
                   1136: 	if ($Apache::lonxml::counter_changed) { &store_counter() }
1.422     albertel 1137: 	&Apache::lonnet::transfer_profile_to_env(undef,undef,1);
1.401     albertel 1138: 	return $env{'form.counter'};
                   1139:     }
1.398     albertel 1140: }
                   1141: 
1.462     foxr     1142: =pod
                   1143: 
1.468     albertel 1144: =item  bubble_lines_for_part(part_response)
1.462     foxr     1145: 
                   1146: Returns the number of lines required to get a response for
1.467     foxr     1147: $part_response (this is just $Apache::lonxml::counters_per_part{$part_response}
1.462     foxr     1148: 
                   1149: =cut
                   1150: 
                   1151: sub bubble_lines_for_part {
1.467     foxr     1152:     my ($part_response) = @_;
1.462     foxr     1153: 
1.467     foxr     1154:     if (!defined($Apache::lonxml::counters_per_part{$part_response})) {
1.462     foxr     1155: 	return 0;
                   1156:     } else {
1.467     foxr     1157: 	return $Apache::lonxml::counters_per_part{$part_response};
1.462     foxr     1158:     }
                   1159: }
                   1160: 
                   1161: =pod
                   1162: 
                   1163: =item clear_bubble_lines_for_part
                   1164: 
                   1165: Clears the hash of bubble lines per part.  If a caller
                   1166: needs to analyze several resources this should be called between
                   1167: resources to reset the hash for each problem being analyzed.
                   1168: 
                   1169: =cut
                   1170: 
                   1171: sub clear_bubble_lines_for_part {
                   1172:     undef(%Apache::lonxml::counters_per_part);
                   1173: }
                   1174: 
                   1175: =pod
                   1176: 
1.468     albertel 1177: =item set_bubble_lines(part_response, value)
1.462     foxr     1178: 
                   1179: If there is a problem part, that for whatever reason
                   1180: requires bubble lines that are not
                   1181: the same as the counter increment, it can call this sub during
                   1182: analysis to set its hash value explicitly.
                   1183: 
                   1184: =cut
                   1185: 
                   1186: sub set_bubble_lines {
1.467     foxr     1187:     my ($part_response, $value) = @_;
1.462     foxr     1188: 
1.467     foxr     1189:     $Apache::lonxml::counters_per_part{$part_response} = $value;
1.462     foxr     1190: }
                   1191: 
                   1192: =pod
                   1193: 
                   1194: =item get_bubble_line_hash
                   1195: 
                   1196: Returns the current bubble line hash.  This is assumed to 
                   1197: be small so we return a copy
                   1198: 
                   1199: 
                   1200: =cut
                   1201: 
                   1202: sub get_bubble_line_hash {
                   1203:     return %Apache::lonxml::counters_per_part;
                   1204: }
                   1205: 
                   1206: 
                   1207: #--------------------------------------------------
                   1208: 
1.19      albertel 1209: sub get_all_text {
1.270     albertel 1210:     my($tag,$pars,$style)= @_;
                   1211:     my $gotfullstack=1;
                   1212:     if (ref($pars) ne 'ARRAY') {
                   1213: 	$gotfullstack=0;
                   1214: 	$pars=[$pars];
                   1215:     }
                   1216:     if (ref($style) ne 'HASH') {
                   1217: 	$style={};
                   1218:     }
                   1219:     my $depth=0;
                   1220:     my $token;
                   1221:     my $result='';
                   1222:     if ( $tag =~ m:^/: ) { 
                   1223: 	my $tag=substr($tag,1); 
                   1224: 	#&Apache::lonxml::debug("have:$tag:");
                   1225: 	my $top_empty=0;
                   1226: 	while (($depth >=0) && ($#$pars > -1) && (!$top_empty)) {
                   1227: 	    while (($depth >=0) && ($token = $$pars[-1]->get_token)) {
                   1228: 		#&Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]:".$#$pars.":".$#Apache::lonxml::pwd);
                   1229: 		if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
1.382     albertel 1230: 		    if ($token->[2]) {
                   1231: 			$result.='<![CDATA['.$token->[1].']]>';
                   1232: 		    } else {
                   1233: 			$result.=$token->[1];
                   1234: 		    }
1.270     albertel 1235: 		} elsif ($token->[0] eq 'PI') {
                   1236: 		    $result.=$token->[2];
                   1237: 		} elsif ($token->[0] eq 'S') {
1.316     albertel 1238: 		    if ($token->[1] =~ /^\Q$tag\E$/i) { $depth++; }
                   1239: 		    if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
                   1240: 		    if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270     albertel 1241: 		    $result.=$token->[4];
                   1242: 		} elsif ($token->[0] eq 'E')  {
1.316     albertel 1243: 		    if ( $token->[1] =~ /^\Q$tag\E$/i) { $depth--; }
1.270     albertel 1244: 		    #skip sending back the last end tag
1.283     albertel 1245: 		    if ($depth == 0 && exists($$style{'/'.$token->[1]}) && $Apache::lonxml::usestyle) {
1.270     albertel 1246: 			my $string=
                   1247: 			    '<LONCAPA_INTERNAL_TURN_STYLE_OFF end="yes" />'.
                   1248: 				$$style{'/'.$token->[1]}.
                   1249: 				    $token->[2].
                   1250: 					'<LONCAPA_INTERNAL_TURN_STYLE_ON />';
                   1251: 			&Apache::lonxml::newparser($pars,\$string);
                   1252: 			#&Apache::lonxml::debug("reParsing $string");
                   1253: 			next;
                   1254: 		    }
                   1255: 		    if ($depth > -1) {
                   1256: 			$result.=$token->[2];
                   1257: 		    } else {
                   1258: 			$$pars[-1]->unget_token($token);
                   1259: 		    }
                   1260: 		}
                   1261: 	    }
                   1262: 	    if (($depth >=0) && ($#$pars == 0) ) { $top_empty=1; }
                   1263: 	    if (($depth >=0) && ($#$pars > 0) ) {
                   1264: 		pop(@$pars);
                   1265: 		pop(@Apache::lonxml::pwd);
                   1266: 	    }
                   1267: 	}
                   1268: 	if ($top_empty && $depth >= 0) {
                   1269: 	    #never found the end tag ran out of text, throw error send back blank
                   1270: 	    &error('Never found end tag for &lt;'.$tag.
                   1271: 		   '&gt; current string <pre>'.
1.314     albertel 1272: 		   &HTML::Entities::encode($result,'<>&"').
1.270     albertel 1273: 		   '</pre>');
                   1274: 	    if ($gotfullstack) {
                   1275: 		my $newstring='</'.$tag.'>'.$result;
                   1276: 		&Apache::lonxml::newparser($pars,\$newstring);
                   1277: 	    }
                   1278: 	    $result='';
                   1279: 	}
                   1280:     } else {
                   1281: 	while ($#$pars > -1) {
                   1282: 	    while ($token = $$pars[-1]->get_token) {
                   1283: 		#&Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
                   1284: 		if (($token->[0] eq 'T')||($token->[0] eq 'C')||
                   1285: 		    ($token->[0] eq 'D')) {
1.382     albertel 1286: 		    if ($token->[2]) {
                   1287: 			$result.='<![CDATA['.$token->[1].']]>';
                   1288: 		    } else {
                   1289: 			$result.=$token->[1];
                   1290: 		    }
1.270     albertel 1291: 		} elsif ($token->[0] eq 'PI') {
                   1292: 		    $result.=$token->[2];
                   1293: 		} elsif ($token->[0] eq 'S') {
1.316     albertel 1294: 		    if ( $token->[1] =~ /^\Q$tag\E$/i) {
1.270     albertel 1295: 			$$pars[-1]->unget_token($token); last;
                   1296: 		    } else {
                   1297: 			$result.=$token->[4];
                   1298: 		    }
1.316     albertel 1299: 		    if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_ON$/) { $Apache::lonxml::usestyle=1; }
                   1300: 		    if ($token->[1] =~ /^LONCAPA_INTERNAL_TURN_STYLE_OFF$/) { $Apache::lonxml::usestyle=0; }
1.270     albertel 1301: 		} elsif ($token->[0] eq 'E')  {
                   1302: 		    $result.=$token->[2];
                   1303: 		}
                   1304: 	    }
                   1305: 	    if (($#$pars > 0) ) {
                   1306: 		pop(@$pars);
                   1307: 		pop(@Apache::lonxml::pwd);
                   1308: 	    } else { last; }
                   1309: 	}
                   1310:     }
                   1311:     #&Apache::lonxml::debug("Exit:$result:");
                   1312:     return $result
1.19      albertel 1313: }
                   1314: 
1.23      albertel 1315: sub newparser {
                   1316:   my ($parser,$contentref,$dir) = @_;
1.167     albertel 1317:   push (@$parser,HTML::LCParser->new($contentref));
1.365     albertel 1318:   $$parser[-1]->xml_mode(1);
                   1319:   $$parser[-1]->marked_sections(1);
1.23      albertel 1320:   if ( $dir eq '' ) {
                   1321:     push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
                   1322:   } else {
                   1323:     push (@Apache::lonxml::pwd, $dir);
                   1324:   } 
                   1325: }
1.1       sakharuk 1326: 
1.8       albertel 1327: sub parstring {
1.417     albertel 1328:     my ($token) = @_;
                   1329:     my (@vars,@values);
                   1330:     foreach my $attr (@{$token->[3]}) {
                   1331: 	if ($attr!~/\W/) {
                   1332: 	    my $val=$token->[2]->{$attr};
                   1333: 	    $val =~ s/([\%\@\\\"\'])/\\$1/g;
                   1334: 	    $val =~ s/(\$[^\{a-zA-Z_])/\\$1/g;
                   1335: 	    $val =~ s/(\$)$/\\$1/;
                   1336: 	    #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
                   1337: 	    push(@vars,"\$$attr");
                   1338: 	    push(@values,"\"$val\"");
                   1339: 	}
                   1340:     }
                   1341:     my $var_init = 
                   1342: 	(@vars) ? 'my ('.join(',',@vars).') = ('.join(',',@values).');'
                   1343: 	        : '';
                   1344:     return $var_init;
1.8       albertel 1345: }
1.22      albertel 1346: 
1.384     albertel 1347: sub extlink {
                   1348:     my ($res,$exact)=@_;
                   1349:     if (!$exact) {
                   1350: 	$res=&Apache::lonnet::hreflocation($Apache::lonxml::pwd[-1],$res);
                   1351:     }
1.550     raeburn  1352:     push(@Apache::lonxml::extlinks,$res);
1.384     albertel 1353: }
                   1354: 
1.34      www      1355: sub writeallows {
1.126     www      1356:     unless ($#extlinks>=0) { return; }
1.377     albertel 1357:     my $thisurl = &Apache::lonnet::clutter(shift);
1.372     albertel 1358:     if ($env{'httpref.'.$thisurl}) {
                   1359: 	$thisurl=$env{'httpref.'.$thisurl};
1.111     www      1360:     }
1.34      www      1361:     my $thisdir=$thisurl;
                   1362:     $thisdir=~s/\/[^\/]+$//;
                   1363:     my %httpref=();
1.142     albertel 1364:     foreach (@extlinks) {
1.34      www      1365:        $httpref{'httpref.'.
1.444     albertel 1366:  	        &Apache::lonnet::hreflocation($thisdir,&unescape($_))}=$thisurl;
1.142     albertel 1367:     }
1.126     www      1368:     @extlinks=();
1.474     raeburn  1369:     &Apache::lonnet::appenv(\%httpref);
1.34      www      1370: }
                   1371: 
1.281     albertel 1372: sub register_ssi {
                   1373:     my ($url,%form)=@_;
                   1374:     push (@Apache::lonxml::ssi_info,{'url'=>$url,'form'=>\%form});
                   1375:     return '';
                   1376: }
                   1377: 
                   1378: sub do_registered_ssi {
                   1379:     foreach my $info (@Apache::lonxml::ssi_info) {
                   1380: 	my %form=%{ $info->{'form'}};
                   1381: 	my $url=$info->{'url'};
                   1382: 	&Apache::lonnet::ssi($url,%form);
                   1383:     }
                   1384: }
1.448     albertel 1385: 
                   1386: sub add_script_result {
                   1387:     my ($display) = @_;
1.546     raeburn  1388:     if ($display ne '') {
                   1389:         push(@script_var_displays, $display);
                   1390:     }
1.448     albertel 1391: }
                   1392: 
1.66      www      1393: #
                   1394: # Afterburner handles anchors, highlights and links
                   1395: #
                   1396: sub afterburn {
                   1397:     my $result=shift;
1.154     albertel 1398:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                   1399: 					    ['highlight','anchor','link']);
1.372     albertel 1400:     if ($env{'form.highlight'}) {
                   1401:        foreach (split(/\,/,$env{'form.highlight'})) {
1.66      www      1402:            my $anchorname=$_;
                   1403: 	   my $matchthis=$anchorname;
                   1404:            $matchthis=~s/\_+/\\s\+/g;
1.317     albertel 1405:            $result=~s/(\Q$matchthis\E)/\<font color=\"red\"\>$1\<\/font\>/gs;
1.142     albertel 1406:        }
1.66      www      1407:     }
1.372     albertel 1408:     if ($env{'form.link'}) {
                   1409:        foreach (split(/\,/,$env{'form.link'})) {
1.66      www      1410:            my ($anchorname,$linkurl)=split(/\>/,$_);
                   1411: 	   my $matchthis=$anchorname;
                   1412:            $matchthis=~s/\_+/\\s\+/g;
1.317     albertel 1413:            $result=~s/(\Q$matchthis\E)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
1.142     albertel 1414:        }
1.66      www      1415:     }
1.372     albertel 1416:     if ($env{'form.anchor'}) {
                   1417:         my $anchorname=$env{'form.anchor'};
1.66      www      1418: 	my $matchthis=$anchorname;
                   1419:         $matchthis=~s/\_+/\\s\+/g;
1.317     albertel 1420:         $result=~s/(\Q$matchthis\E)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
1.66      www      1421:         $result.=(<<"ENDSCRIPT");
1.226     albertel 1422: <script type="text/javascript">
1.66      www      1423:     document.location.hash='$anchorname';
                   1424: </script>
                   1425: ENDSCRIPT
                   1426:     }
                   1427:     return $result;
                   1428: }
                   1429: 
1.79      www      1430: sub storefile {
                   1431:     my ($file,$contents)=@_;
1.290     albertel 1432:     &Apache::lonnet::correct_line_ends(\$contents);
1.79      www      1433:     if (my $fh=Apache::File->new('>'.$file)) {
                   1434: 	print $fh $contents;
                   1435:         $fh->close();
1.271     www      1436:         return 1;
1.147     albertel 1437:     } else {
1.482     bisitz   1438: 	&warning(&mt('Unable to save file [_1]','<tt>'.$file.'</tt>'));
1.271     www      1439: 	return 0;
1.79      www      1440:     }
                   1441: }
                   1442: 
1.151     albertel 1443: sub createnewhtml {
1.321     www      1444:     my $title=&mt('Title of document goes here');
                   1445:     my $body=&mt('Body of document goes here');
                   1446:     my $filecontents=(<<SIMPLECONTENT);
1.78      www      1447: <html>
                   1448: <head>
1.321     www      1449: <title>$title</title>
1.78      www      1450: </head>
                   1451: <body bgcolor="#FFFFFF">
1.321     www      1452: $body
1.78      www      1453: </body>
                   1454: </html>
                   1455: SIMPLECONTENT
1.321     www      1456:     return $filecontents;
1.151     albertel 1457: }
                   1458: 
1.274     albertel 1459: sub createnewsty {
                   1460:   my $filecontents=(<<SIMPLECONTENT);
                   1461: <definetag name="">
                   1462:     <render>
                   1463:        <web></web>
                   1464:        <tex></tex>
                   1465:     </render>
                   1466: </definetag>
                   1467: SIMPLECONTENT
                   1468:   return $filecontents;
                   1469: }
                   1470: 
1.493     raeburn  1471: sub createnewjs {
                   1472:     my $filecontents=(<<SIMPLECONTENT);
                   1473: <script type="text/javascript" language="Javascript">
                   1474: 
                   1475: </script>
                   1476: SIMPLECONTENT
                   1477:     return $filecontents;
                   1478: }
                   1479: 
1.472     www      1480: sub verify_html {
                   1481:     my ($filecontents)=@_;
1.553     raeburn  1482:     my ($is_html,$is_xml,$is_physnet);
1.516     raeburn  1483:     if ($filecontents =~/(?:\<|\&lt\;)\?xml[^\<]*\?(?:\>|\&gt\;)/is) {
                   1484:         $is_xml = 1;
1.518     raeburn  1485:     } elsif ($filecontents =~/(?:\<|\&lt\;)html(?:\s+[^\<]+|\s*)(?:\>|\&gt\;)/is) {
1.516     raeburn  1486:         $is_html = 1;
1.553     raeburn  1487:     } elsif ($filecontents =~/(?:\<|\&lt\;)physnet[^\<]*(?:\>|\&gt\;)/is) {
                   1488:         $is_physnet = 1;
1.516     raeburn  1489:     }
1.553     raeburn  1490:     unless ($is_xml || $is_html || $is_physnet) {
1.516     raeburn  1491:         return &mt('File does not have [_1] or [_2] starting tag','&lt;html&gt;','&lt;?xml ?&gt;');
                   1492:     }
                   1493:     if ($is_html) {
                   1494:         if ($filecontents!~/(?:\<|\&lt\;)\/html(?:\>|\&gt\;)/is) {
                   1495:             return &mt('File does not have [_1] ending tag','&lt;html&gt;');
                   1496:         }
                   1497:         if ($filecontents!~/(?:\<|\&lt\;)(?:body|frameset)[^\<]*(?:\>|\&gt\;)/is) {
                   1498:             return &mt('File does not have [_1] or [_2] starting tag','&lt;body&gt;','&lt;frameset&gt;');
                   1499:         }
                   1500:         if ($filecontents!~/(?:\<|\&lt\;)\/(?:body|frameset)[^\<]*(?:\>|\&gt\;)/is) {
                   1501:             return &mt('File does not have [_1] or [_2] ending tag','&lt;body&gt;','&lt;frameset&gt;');
                   1502:         }
1.472     www      1503:     }
                   1504:     return '';
                   1505: }
1.147     albertel 1506: 
1.478     www      1507: sub renderingoptions {
                   1508:     my %langchoices=('' => '');
                   1509:     foreach (&Apache::loncommon::languageids()) {
                   1510:         if (&Apache::loncommon::supportedlanguagecode($_)) {
                   1511:             $langchoices{&Apache::loncommon::supportedlanguagecode($_)}
                   1512:                        = &Apache::loncommon::plainlanguagedescription($_);
                   1513:         }
                   1514:     }
1.500     raeburn  1515:     my $output;
                   1516:     unless ($env{'form.forceedit'}) {
1.504     bisitz   1517:        $output .=
                   1518:            '<span class="LC_nobreak">'.
1.500     raeburn  1519:            &mt('Language:').' '.
1.504     bisitz   1520:            &Apache::loncommon::select_form(
                   1521:                $env{'form.languages'},
                   1522:                'languages',
1.510     raeburn  1523:                {&Apache::lonlocal::texthash(%langchoices)}).
1.504     bisitz   1524:            '</span>';
1.500     raeburn  1525:     }
1.504     bisitz   1526:     $output .=
                   1527:      ' <span class="LC_nobreak">'.
1.479     bisitz   1528:        &mt('Math Rendering:').' '.
1.504     bisitz   1529:        &Apache::loncommon::select_form(
                   1530:            $env{'form.texengine'},
                   1531:            'texengine',
1.510     raeburn  1532:            {&Apache::lonlocal::texthash
1.504     bisitz   1533:                (''        => '',
                   1534:                 'tth'     => 'tth (TeX to HTML)',
1.526     dseaton  1535:                 'MathJax' => 'MathJax',
1.510     raeburn  1536:                 'mimetex' => 'mimetex (Convert to Images)')}).
1.504     bisitz   1537:      '</span>';
1.500     raeburn  1538:     return $output;
1.478     www      1539: }
                   1540: 
1.151     albertel 1541: sub inserteditinfo {
1.543     raeburn  1542:       my ($filecontents,$filetype,$filename,$symb,$itemtitle,$folderpath,$uri,$action) = @_;
1.314     albertel 1543:       $filecontents = &HTML::Entities::encode($filecontents,'<>&"');
1.274     albertel 1544:       my $xml_help = '';
1.321     www      1545:       my $initialize='';
1.452     albertel 1546:       my $textarea_id = 'filecont';
1.548     raeburn  1547:       my ($dragmath_button,$deps_button,$context,$cnum,$cdom,$add_to_onload,
                   1548:           $add_to_onresize,$init_dragmath);
1.456     albertel 1549:       $initialize=&Apache::lonhtmlcommon::spellheader();
1.548     raeburn  1550:       if ($filetype eq 'html') {
                   1551:           if ($env{'request.course.id'}) {
                   1552:               $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
                   1553:               $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
                   1554:               if ($uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E}) {
                   1555:                   $context = 'syllabus';
                   1556:               }
                   1557:           }
                   1558:           if (&Apache::lonhtmlcommon::htmlareabrowser()) {
                   1559: 	      my $lang = &Apache::lonhtmlcommon::htmlarea_lang();
                   1560:               my %textarea_args = (
                   1561:                                     fullpage => 'true',
                   1562:                                     dragmath => 'math',
                   1563:                                   );
                   1564:               $initialize .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
                   1565:               if ($context eq 'syllabus') {
                   1566:                   $init_dragmath = "editmath_visibility('filecont','none')";
                   1567:               }
                   1568:           }
1.514     raeburn  1569:       }
                   1570:       $initialize .= (<<FULLPAGE);
1.321     www      1571: <script type="text/javascript">
1.514     raeburn  1572: // <![CDATA[
1.321     www      1573:     function initDocument() {
1.463     albertel 1574: 	resize_textarea('$textarea_id','LC_aftertextarea');
1.548     raeburn  1575:         $init_dragmath
1.321     www      1576:     }
1.514     raeburn  1577: // ]]>
1.321     www      1578: </script>
                   1579: FULLPAGE
1.540     raeburn  1580:       my $textareaclass;
1.514     raeburn  1581:       if ($filetype eq 'html') {
1.548     raeburn  1582:           if ($context eq 'syllabus') {
                   1583:               $deps_button = &Apache::lonhtmlcommon::dependencies_button()."\n";
                   1584:               $initialize .=
                   1585:                   &Apache::lonhtmlcommon::dependencycheck_js(undef,&mt('Syllabus'),
                   1586:                                                              $uri,undef,
                   1587:                                                              "/public/$cdom/$cnum/syllabus").
                   1588:                   "\n";
                   1589:               if (&Apache::lonhtmlcommon::htmlareabrowser()) {
                   1590:                   $textareaclass = 'class="LC_richDefaultOn"';
1.539     raeburn  1591:               }
1.548     raeburn  1592:           } elsif ($symb || $folderpath) {
                   1593:               $deps_button = &Apache::lonhtmlcommon::dependencies_button()."\n";
                   1594:               $initialize .= 
                   1595:                   &Apache::lonhtmlcommon::dependencycheck_js($symb,$itemtitle,
                   1596:                                                              undef,$folderpath,$uri)."\n";
1.530     raeburn  1597:           }
1.514     raeburn  1598:           $dragmath_button = '<span id="math_filecont">'.&Apache::lonhtmlcommon::dragmath_button('filecont',1).'</span>';
                   1599:           $initialize .= "\n".&Apache::lonhtmlcommon::dragmath_js('EditMathPopup');
1.512     raeburn  1600:       }
1.456     albertel 1601:       $add_to_onload = 'initDocument();';
                   1602:       $add_to_onresize = "resize_textarea('$textarea_id','LC_aftertextarea');";
                   1603: 
                   1604:       if ($filetype eq 'html') {
1.547     raeburn  1605:           my $not_author;
                   1606:           if ($uri =~ m{^/uploaded/}) {
                   1607:               $not_author = 1;
                   1608:           }
                   1609: 	  $xml_help=&Apache::loncommon::helpLatexCheatsheet(undef,undef,$not_author);
1.274     albertel 1610:       }
1.452     albertel 1611: 
1.254     albertel 1612:       my $titledisplay=&display_title();
1.426     banghart 1613:       my %lt=&Apache::lonlocal::texthash('st' => 'Save and Edit',
                   1614: 					 'vi' => 'Save and View',
1.427     banghart 1615: 					 'dv' => 'Discard Edits and View',
1.428     banghart 1616: 					 'un' => 'undo',
1.280     www      1617: 					 'ed' => 'Edit');
1.512     raeburn  1618:       my $spelllink = &Apache::lonhtmlcommon::spelllink('xmledit','filecont');
1.451     albertel 1619:       my $textarea_events = &Apache::edit::element_change_detection();
                   1620:       my $form_events     = &Apache::edit::form_change_detection();
1.491     raeburn  1621:       my $htmlerror;
                   1622:       if ($filetype eq 'html') {
                   1623:           $htmlerror=&verify_html($filecontents);
                   1624:           if ($htmlerror) {
                   1625:               $htmlerror='<span class="LC_error">'.$htmlerror.'</span>';
                   1626:           }
1.501     raeburn  1627:           if (&Apache::lonhtmlcommon::htmlareabrowser()) {
1.540     raeburn  1628:               unless ($textareaclass) {
                   1629:                   $textareaclass = 'class="LC_richDefaultOff"';
                   1630:               }
1.501     raeburn  1631:           }
1.472     www      1632:       }
1.547     raeburn  1633:       my $undo;
                   1634:       unless ($uri =~ m{^/uploaded/}) {
                   1635:           $undo = '<input type="submit" name="Undo" accesskey="u" value="'.$lt{'un'}.'" />'."\n";
                   1636:       }
1.78      www      1637:       my $editfooter=(<<ENDFOOTER);
1.321     www      1638: $initialize
1.78      www      1639: <a name="editsection" />
1.543     raeburn  1640: <form $form_events method="post" name="xmledit" action="$action">
1.470     albertel 1641:   <div class="LC_edit_problem_editxml_header">
                   1642:     <table class="LC_edit_problem_header_title"><tr><td>
                   1643:         $filename
                   1644:       </td><td align="right">
                   1645:         $xml_help
                   1646:       </td></tr>
                   1647:     </table>
1.565   ! raeburn  1648:     <div style="float:right">
        !          1649:       <input type="submit" name="savethisfile" accesskey="s" value="$lt{'st'}" />
        !          1650:       <input type="submit" name="viewmode" accesskey="v" value="$lt{'vi'}" />
        !          1651:     </div>
1.554     droeschl 1652:     <div>
1.470     albertel 1653:       <input type="submit" name="discardview" accesskey="d" value="$lt{'dv'}" />
1.547     raeburn  1654:       $undo $htmlerror $deps_button $dragmath_button
1.470     albertel 1655:     </div>
                   1656:   </div>
1.513     raeburn  1657:   <textarea $textarea_events style="width:100%" cols="80" rows="44" name="filecont" id="filecont" $textareaclass>$filecontents</textarea><br />$spelllink
1.470     albertel 1658:   <div id="LC_aftertextarea">
                   1659:     <br />
                   1660:     $titledisplay
                   1661:   </div>
1.78      www      1662: </form>
                   1663: ENDFOOTER
1.452     albertel 1664:       return ($editfooter,$add_to_onload,$add_to_onresize);;
1.78      www      1665: }
                   1666: 
1.563     raeburn  1667: sub setmode_javascript {
                   1668:     return <<"ENDSCRIPT";
                   1669: <script type="text/javascript">
                   1670: // <![CDATA[
                   1671: function setmode(form,probmode) {
                   1672:     if (probmode == 'daxe') {
                   1673:         var url = new URL(document.location.href);
                   1674:         window.location = url.protocol+'//'+url.hostname+'/daxepage'+url.pathname;
                   1675:     } else {
                   1676:         var initial = form.problemmode.value;
                   1677:         form.problemmode.value = probmode;
                   1678:         form.submit();
                   1679:         form.problemmode.value = initial;
                   1680:     }
                   1681: }
                   1682: // ]]>
                   1683: </script>
                   1684: ENDSCRIPT
                   1685: }
                   1686: 
1.564     raeburn  1687: sub seteditor_javascript {
                   1688:     return <<"ENDSCRIPT";
                   1689: <script type="text/javascript">
                   1690: // <![CDATA[
                   1691: function seteditmode(form,editor) {
                   1692:     if (editor == 'daxe') {
                   1693:         var url = new URL(document.location.href);
                   1694:         window.location = url.protocol+'//'+url.hostname+'/daxepage'+url.pathname;
                   1695:     } else {
                   1696:         form.editmode.value = editor;
                   1697:         form.submit();
                   1698:     }
                   1699: }
                   1700: // ]]>
                   1701: </script>
                   1702: ENDSCRIPT
                   1703: }
                   1704: 
1.152     albertel 1705: sub get_target {
1.372     albertel 1706:   my $viewgrades=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
                   1707:   if ( $env{'request.state'} eq 'published') {
                   1708:     if ( defined($env{'form.grade_target'})
1.152     albertel 1709: 	 && ($viewgrades == 'F' )) {
1.372     albertel 1710:       return ($env{'form.grade_target'});
                   1711:     } elsif (defined($env{'form.grade_target'})) {
                   1712:       if (($env{'form.grade_target'} eq 'web') ||
                   1713: 	  ($env{'form.grade_target'} eq 'tex') ) {
                   1714: 	return $env{'form.grade_target'}
1.153     albertel 1715:       } else {
                   1716: 	return 'web';
                   1717:       }
1.152     albertel 1718:     } else {
                   1719:       return 'web';
                   1720:     }
1.372     albertel 1721:   } elsif ($env{'request.state'} eq 'construct') {
                   1722:     if ( defined($env{'form.grade_target'})) {
                   1723:       return ($env{'form.grade_target'});
1.152     albertel 1724:     } else {
                   1725:       return 'web';
                   1726:     }
                   1727:   } else {
                   1728:     return 'web';
                   1729:   }
                   1730: }
                   1731: 
1.24      sakharuk 1732: sub handler {
1.255     sakharuk 1733:     my $request=shift;
1.493     raeburn  1734: 
1.255     sakharuk 1735:     my $target=&get_target();
1.372     albertel 1736:     $Apache::lonxml::debug=$env{'user.debug'};
1.255     sakharuk 1737:     
1.364     albertel 1738:     &Apache::loncommon::content_type($request,'text/html');
1.255     sakharuk 1739:     &Apache::loncommon::no_cache($request);
1.372     albertel 1740:     if ($env{'request.state'} eq 'published') {
1.363     albertel 1741: 	$request->set_last_modified(&Apache::lonnet::metadata($request->uri,
                   1742: 							      'lastrevisiondate'));
                   1743:     }
1.499     raeburn  1744:     # Embedded Flash movies from Camtasia served from https will not display in IE
                   1745:     #   if XML config file has expired from cache.    
                   1746:     if ($ENV{'SERVER_PORT'} == 443) {
                   1747:         if ($request->uri =~ /\.xml$/) {
                   1748:             my ($httpbrowser,$clientbrowser) =
                   1749:                 &Apache::loncommon::decode_user_agent($request);
                   1750:             if ($clientbrowser =~ /^explorer$/i) {
                   1751:                 delete $request->headers_out->{'Cache-control'};
                   1752:                 delete $request->headers_out->{'Pragma'};
                   1753:                 my $expiration = time + 60;
                   1754:                 my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime($expiration));
                   1755:                 $request->headers_out->set("Expires" => $date);
                   1756:             }
                   1757:         }
                   1758:     }
1.255     sakharuk 1759:     $request->send_http_header;
                   1760:     
                   1761:     return OK if $request->header_only;
1.68      www      1762: 
                   1763: 
1.255     sakharuk 1764:     my $file=&Apache::lonnet::filelocation("",$request->uri);
1.502     raeburn  1765:     my ($filetype,$breadcrumbtext);
                   1766:     if ($file =~ /\.(sty|css|js|txt|tex)$/) {
1.493     raeburn  1767: 	$filetype=$1;
1.274     albertel 1768:     } else {
                   1769: 	$filetype='html';
1.537     raeburn  1770:     }
                   1771:     unless ($env{'request.uri'}) {
1.536     raeburn  1772:         $env{'request.uri'}=$request->uri;
1.537     raeburn  1773:         &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                   1774:                                                 ['todocs']);
1.274     albertel 1775:     }
1.540     raeburn  1776:     my ($cdom,$cnum);
                   1777:     if ($env{'request.course.id'}) {
                   1778:         $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
                   1779:         $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
                   1780:         if ($filetype eq 'html') {
                   1781:             if ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E.+$}) {
                   1782:                 if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
                   1783:                     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                   1784:                                                             ['editmode']);
                   1785:                 }
                   1786:             }
                   1787:         }
                   1788:     }
1.502     raeburn  1789:     if ($filetype eq 'sty') {
                   1790:         $breadcrumbtext = 'Style File Editor';
                   1791:     } elsif ($filetype eq 'js') {
                   1792:         $breadcrumbtext = 'Javascript Editor';
                   1793:     } elsif ($filetype eq 'css') {
                   1794:         $breadcrumbtext = 'CSS Editor';
                   1795:     } elsif ($filetype eq 'txt') {
                   1796:         $breadcrumbtext = 'Text Editor';
                   1797:     } elsif ($filetype eq 'tex') {
                   1798:         $breadcrumbtext = 'TeX Editor';
                   1799:     } else {
                   1800:         $breadcrumbtext = 'HTML Editor';
                   1801:     }
1.493     raeburn  1802: 
1.78      www      1803: #
                   1804: # Edit action? Save file.
                   1805: #
1.428     banghart 1806:     if (!($env{'request.state'} eq 'published')) {
                   1807: 	if ($env{'form.savethisfile'} || $env{'form.viewmode'} || $env{'form.Undo'}) {
1.429     albertel 1808: 	    my $html_file=&Apache::lonnet::getfile($file);
                   1809: 	    my $error = &Apache::lonhomework::handle_save_or_undo($request, \$html_file, \$env{'form.filecont'});
1.472     www      1810:             if ($env{'form.savethisfile'}) {
                   1811:                 $env{'form.editmode'}='Edit'; #force edit mode
                   1812:             }
1.255     sakharuk 1813: 	}
                   1814:     }
1.549     raeburn  1815:     my $inhibit_menu;
1.255     sakharuk 1816:     my %mystyle;
                   1817:     my $result = '';
                   1818:     my $filecontents=&Apache::lonnet::getfile($file);
                   1819:     if ($filecontents eq -1) {
1.402     albertel 1820: 	my $start_page=&Apache::loncommon::start_page('File Error');
1.412     albertel 1821: 	my $end_page=&Apache::loncommon::end_page();
1.495     bisitz   1822:         my $errormsg='<p class="LC_error">'
                   1823:                     .&mt('File not found: [_1]'
                   1824:                         ,'<span class="LC_filename">'.$file.'</span>')
                   1825:                     .'</p>';
1.255     sakharuk 1826: 	$result=(<<ENDNOTFOUND);
1.402     albertel 1827: $start_page
1.495     bisitz   1828: $errormsg
1.402     albertel 1829: $end_page
1.78      www      1830: ENDNOTFOUND
1.343     albertel 1831:         $filecontents='';
1.372     albertel 1832: 	if ($env{'request.state'} ne 'published') {
1.274     albertel 1833: 	    if ($filetype eq 'sty') {
                   1834: 		$filecontents=&createnewsty();
1.493     raeburn  1835:             } elsif ($filetype eq 'js') {
                   1836:                 $filecontents=&createnewjs();
1.502     raeburn  1837:             } elsif ($filetype ne 'css' && $filetype ne 'txt' && $filetype ne 'tex') {
1.274     albertel 1838: 		$filecontents=&createnewhtml();
                   1839: 	    }
1.372     albertel 1840: 	    $env{'form.editmode'}='Edit'; #force edit mode
1.255     sakharuk 1841: 	}
                   1842:     } else {
1.372     albertel 1843: 	unless ($env{'request.state'} eq 'published') {
1.343     albertel 1844: 	    if ($filecontents=~/BEGIN LON-CAPA Internal/) {
1.381     www      1845: 		&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 1846: 	    }
1.264     www      1847: #
                   1848: # we are in construction space, see if edit mode forced
1.385     albertel 1849:             &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                   1850: 						    ['editmode']);
1.255     sakharuk 1851: 	}
1.427     banghart 1852: 	if (!$env{'form.editmode'} || $env{'form.viewmode'} || $env{'form.discardview'}) {
1.493     raeburn  1853:             if ($filetype eq 'html' || $filetype eq 'sty') {
                   1854: 	        &Apache::structuretags::reset_problem_globals();
                   1855: 	        $result = &Apache::lonxml::xmlparse($request,$target,
                   1856:                                                     $filecontents,'',%mystyle);
1.455     albertel 1857: 	    # .html files may contain <problem> or <Task> need to clean
                   1858: 	    # up if it did
1.493     raeburn  1859: 	        &Apache::structuretags::reset_problem_globals();
                   1860: 	        &Apache::lonhomework::finished_parsing();
1.502     raeburn  1861:             } elsif ($filetype eq 'tex') {
1.503     raeburn  1862:                 $result = &Apache::lontexconvert::converted(\$filecontents,
                   1863:                               $env{'form.texengine'});
                   1864:                 if ($env{'form.return_only_error_and_warning_counts'}) {
                   1865:                     $result = "$errorcount:$warningcount";
                   1866:                 }
1.493     raeburn  1867:             } else {
                   1868:                 $result = $filecontents;
                   1869:             }
1.385     albertel 1870: 	    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                   1871: 						    ['rawmode']);
1.395     albertel 1872: 	    if ($env{'form.rawmode'}) { $result = $filecontents; }
1.549     raeburn  1873:             if (($env{'request.state'} eq 'construct') &&
                   1874:                 (($filetype eq 'css') || ($filetype eq 'js')) && ($ENV{'HTTP_REFERER'})) {
                   1875:                 if ($ENV{'HTTP_REFERER'} =~ m{^https?\://[^\/]+/priv/$LONCAPA::match_domain/$LONCAPA::match_username/[^\?]+\.(x?html?|swf)(|\?)[^\?]*$}) {
                   1876:                     $inhibit_menu = 1;
                   1877:                 }
                   1878:             }
1.503     raeburn  1879:             if (($filetype ne 'html') && 
1.549     raeburn  1880:                 (!$env{'form.return_only_error_and_warning_counts'}) &&
                   1881:                 (!$inhibit_menu)) {
1.502     raeburn  1882:                 my $nochgview = 1;
1.495     bisitz   1883:                 my $controls = '';
                   1884:                     if ($env{'request.state'} eq 'construct') {
                   1885:                         $controls = &Apache::loncommon::head_subbox(
                   1886:                                         &Apache::loncommon::CSTR_pageheader()
                   1887:                                        .&Apache::londefdef::edit_controls($nochgview));
                   1888:                     }
1.502     raeburn  1889:                 if ($filetype ne 'sty' && $filetype ne 'tex') {
1.493     raeburn  1890:                     $result =~ s/</&lt;/g;
                   1891:                     $result =~ s/>/&gt;/g;
                   1892:                     $result = '<table class="LC_sty_begin">'.
                   1893:                               '<tr><td><b><pre>'.$result.
                   1894:                               '</pre></b></td></tr></table>';
                   1895:                 }
1.506     droeschl 1896:                 my $brcrum;
                   1897:                 if ($env{'request.state'} eq 'construct') {
1.561     raeburn  1898:                     my $text = 'Authoring Space';
                   1899:                     my $href = &Apache::loncommon::authorspace($request->uri);
                   1900:                     if ($env{'request.course.id'}) {
                   1901:                         my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
                   1902:                         my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
                   1903:                         if ($href eq "/priv/$cdom/$cnum/") {
                   1904:                             $text = 'Course Authoring Space';
                   1905:                         }
                   1906:                     }
                   1907:                     $brcrum = [{'href' => $href,
1.562     raeburn  1908:                                 'text' => $text,},
1.506     droeschl 1909:                                {'href' => '',
                   1910:                                 'text' => $breadcrumbtext}];
1.493     raeburn  1911:                 } else {
1.506     droeschl 1912:                     $brcrum = ''; # FIXME: Where are we?
1.493     raeburn  1913:                 }
1.506     droeschl 1914:                 my %options = ('bread_crumbs' => $brcrum,
                   1915:                                'bgcolor'      => '#FFFFFF');
                   1916:                 $result =
                   1917:                     &Apache::loncommon::start_page(undef,undef,\%options)
                   1918:                    .$controls
                   1919:                    .$result
                   1920:                    .&Apache::loncommon::end_page();
1.493     raeburn  1921:             }
1.495     bisitz   1922:         }
1.147     albertel 1923:     }
1.456     albertel 1924: 
1.78      www      1925: #
                   1926: # Edit action? Insert editing commands
                   1927: #
1.549     raeburn  1928:     unless (($env{'request.state'} eq 'published') || ($inhibit_menu)) {
1.427     banghart 1929: 	if ($env{'form.editmode'} && (!($env{'form.viewmode'})) && (!($env{'form.discardview'})))
1.450     albertel 1930: 	{
1.543     raeburn  1931:             my ($displayfile,$url,$symb,$itemtitle,$action);
1.530     raeburn  1932: 	    $displayfile=$request->uri;
                   1933:             if ($request->uri =~ m{^/uploaded/}) {
1.534     raeburn  1934:                 if ($env{'request.course.id'}) {
1.539     raeburn  1935:                     if ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/supplemental/\E}) {
1.534     raeburn  1936:                         &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                   1937:                                                                 ['folderpath','title']);
1.539     raeburn  1938:                     } elsif ($request->uri =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus/\E(.+)$}) {
1.540     raeburn  1939:                         my $filename = $1;
                   1940:                         if ($1 eq 'loncapa.html') {
                   1941:                             $displayfile = &mt('Syllabus (minimal template)');
1.543     raeburn  1942:                             $action = $request->uri.'?forceedit=1';
1.540     raeburn  1943:                         } else {
                   1944:                             $displayfile = &mt('Syllabus file: [_1]',$1);
                   1945:                         }
1.539     raeburn  1946:                         $itemtitle = &mt('Syllabus');
1.534     raeburn  1947:                     }
                   1948:                 }
1.539     raeburn  1949:                 unless ($itemtitle) {
                   1950:                     ($symb,$itemtitle,$displayfile) = 
                   1951:                         &get_courseupload_hierarchy($request->uri,
                   1952:                                                     $env{'form.folderpath'},
                   1953:                                                     $env{'form.title'});
                   1954:                 }
1.529     raeburn  1955:             } else {
                   1956: 	        $displayfile=~s/^\/[^\/]*//;
                   1957:             }
1.470     albertel 1958: 
1.452     albertel 1959: 	    my ($edit_info, $add_to_onload, $add_to_onresize)=
1.534     raeburn  1960: 		&inserteditinfo($filecontents,$filetype,$displayfile,$symb,
1.543     raeburn  1961:                                 $itemtitle,$env{'form.folderpath'},$request->uri,$action);
1.450     albertel 1962: 
                   1963: 	    my %options = 
                   1964: 		('add_entries' =>
1.495     bisitz   1965:                    {'onresize'     => $add_to_onresize,
                   1966:                     'onload'       => $add_to_onload,   });
1.500     raeburn  1967:             my $header;
                   1968:             if ($env{'request.state'} eq 'construct') {
1.561     raeburn  1969:                 my $text = 'Authoring Space';
                   1970:                 my $href = &Apache::loncommon::authorspace($request->uri);
                   1971:                 if ($env{'request.course.id'}) {
                   1972:                     my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
                   1973:                     my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
                   1974:                     if ($href eq "/priv/$cdom/$cnum/") {
                   1975:                         $text = 'Course Authoring Space';
                   1976:                     }
                   1977:                 }
1.500     raeburn  1978:                 $options{'bread_crumbs'} = [{
1.561     raeburn  1979:                             'href' => $href,
                   1980:                             'text' => $text},
1.500     raeburn  1981:                            {'href' => '',
1.502     raeburn  1982:                             'text' => $breadcrumbtext}];
1.500     raeburn  1983:                 $header = &Apache::loncommon::head_subbox(
                   1984:                               &Apache::loncommon::CSTR_pageheader());
                   1985:             }
1.452     albertel 1986: 	    my $js =
                   1987: 		&Apache::edit::js_change_detection().
                   1988: 		&Apache::loncommon::resize_textarea_js();
1.451     albertel 1989: 	    my $start_page = &Apache::loncommon::start_page(undef,$js,
1.402     albertel 1990: 							    \%options);
1.495     bisitz   1991:             $result = $start_page
1.500     raeburn  1992:                      .$header
1.495     bisitz   1993:                      .&Apache::lonxml::message_location()
                   1994:                      .$edit_info
                   1995:                      .&Apache::loncommon::end_page();
1.493     raeburn  1996:         }
1.147     albertel 1997:     }
1.402     albertel 1998:     if ($filetype eq 'html') { &writeallows($request->uri); }
1.501     raeburn  1999: 
1.309     albertel 2000:     &Apache::lonxml::add_messages(\$result);
1.255     sakharuk 2001:     $request->print($result);
                   2002:     
                   2003:     return OK;
1.253     albertel 2004: }
                   2005: 
                   2006: sub display_title {
                   2007:     my $result;
1.372     albertel 2008:     if ($env{'request.state'} eq 'construct') {
1.253     albertel 2009: 	my $title=&Apache::lonnet::gettitle();
                   2010: 	if (!defined($title) || $title eq '') {
1.372     albertel 2011: 	    $title = $env{'request.filename'};
1.253     albertel 2012: 	    $title = substr($title, rindex($title, '/') + 1);
                   2013: 	}
1.476     bisitz   2014:         $result = "<script type='text/javascript'>top.document.title = '$title - LON-CAPA "
1.541     raeburn  2015:                   .&mt('Authoring Space')."';</script>";
1.253     albertel 2016:     }
                   2017:     return $result;
1.24      sakharuk 2018: }
1.147     albertel 2019: 
1.530     raeburn  2020: sub get_courseupload_hierarchy {
1.534     raeburn  2021:     my ($url,$folderpath,$title) = @_;
1.530     raeburn  2022:     my ($symb,$itemtitle,$displaypath);
                   2023:     if ($env{'request.course.id'}) {
1.534     raeburn  2024:         if ($folderpath =~ /^supplemental/) {
                   2025:             my @folders = split(/\&/,$folderpath);
                   2026:             my @pathitems;
                   2027:             while (@folders) {
                   2028:                 my $folder=shift(@folders);
                   2029:                 my $foldername=shift(@folders);
1.538     raeburn  2030:                 $foldername =~ s/\:(\d*)\:(\w*)\:(\w*):(\d*)\:?(\d*)$//;
1.534     raeburn  2031:                 push(@pathitems,&unescape($foldername));
                   2032:             }
                   2033:             if ($title) {
                   2034:                 push(@pathitems,&unescape($title));
                   2035:             }
                   2036:             $displaypath = join(' &raquo; ',@pathitems);
                   2037:         } else {
                   2038:             $symb = &Apache::lonnet::symbread($url);
                   2039:             my ($map,$id,$res)=&Apache::lonnet::decode_symb($symb);
                   2040:             my $navmap=Apache::lonnavmaps::navmap->new;
                   2041:             if (ref($navmap)) {
                   2042:                 my $res = $navmap->getBySymb($symb);
                   2043:                 if (ref($res)) {
                   2044:                     my @pathitems =
                   2045:                         &Apache::loncommon::get_folder_hierarchy($navmap,$map,1);
                   2046:                     $itemtitle = $res->compTitle();
                   2047:                     push(@pathitems,$itemtitle);
                   2048:                     $displaypath = join(' &raquo; ',@pathitems);
                   2049:                 }
1.530     raeburn  2050:             }
                   2051:         }
                   2052:     }
                   2053:     return ($symb,$itemtitle,$displaypath);
                   2054: }
                   2055: 
1.22      albertel 2056: sub debug {
1.298     albertel 2057:     if ($Apache::lonxml::debug eq "1") {
                   2058: 	$|=1;
1.300     albertel 2059: 	my $request=$Apache::lonxml::request;
1.388     albertel 2060: 	if (!$request) {
                   2061: 	    eval { $request=Apache->request; };
                   2062: 	}
                   2063: 	if (!$request) {
                   2064: 	    eval { $request=Apache2::RequestUtil->request; };
                   2065: 	}
1.314     albertel 2066: 	$request->print('<font size="-2"><pre>DEBUG:'.&HTML::Entities::encode($_[0],'<>&"')."</pre></font>\n");
1.346     albertel 2067: 	#&Apache::lonnet::logthis($_[0]);
1.298     albertel 2068:     }
1.22      albertel 2069: }
1.49      albertel 2070: 
1.348     albertel 2071: sub show_error_warn_msg {
1.522     raeburn  2072:     if (($env{'request.filename'} eq 
                   2073:          $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/lib/templates/simpleproblem.problem') &&
                   2074:         (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
1.351     albertel 2075: 	return 1;
                   2076:     }
1.348     albertel 2077:     return (($Apache::lonxml::debug eq 1) ||
1.372     albertel 2078: 	    ($env{'request.state'} eq 'construct') ||
1.348     albertel 2079: 	    ($Apache::lonhomework::browse eq 'F'
                   2080: 	     &&
1.372     albertel 2081: 	     $env{'form.show_errors'} eq 'on'));
1.348     albertel 2082: }
                   2083: 
1.22      albertel 2084: sub error {
1.454     albertel 2085:     my @errors = @_;
                   2086: 
1.336     albertel 2087:     $errorcount++;
1.454     albertel 2088: 
1.490     www      2089:     $Apache::lonxml::internal_error=1;
                   2090: 
1.454     albertel 2091:     if (defined($Apache::inputtags::part)) {
                   2092: 	if ( @Apache::inputtags::response ) {
                   2093: 	    push(@errors,
                   2094: 		 &mt("This error occurred while processing response [_1] in part [_2]",
                   2095: 		     $Apache::inputtags::response[-1],
                   2096: 		     $Apache::inputtags::part));
                   2097: 	} else {
                   2098: 	    push(@errors,
                   2099: 		 &mt("This error occurred while processing part [_1]",
                   2100: 		     $Apache::inputtags::part));
                   2101: 	}
                   2102:     }
                   2103: 
1.348     albertel 2104:     if ( &show_error_warn_msg() ) {
1.336     albertel 2105: 	# If printing in construction space, put the error inside <pre></pre>
                   2106: 	push(@Apache::lonxml::error_messages,
1.484     bisitz   2107: 	     $Apache::lonxml::warnings_error_header
                   2108:              .'<div class="LC_error">'
                   2109:              .'<b>'.&mt('ERROR:').' </b>'.join("<br />\n",@errors)
                   2110:              ."</div>\n");
1.336     albertel 2111: 	$Apache::lonxml::warnings_error_header='';
                   2112:     } else {
                   2113: 	my $errormsg;
                   2114: 	my ($symb)=&Apache::lonnet::symbread();
                   2115: 	if ( !$symb ) {
                   2116: 	    #public or browsers
1.486     bisitz   2117: 	    $errormsg=&mt("An error occurred while processing this resource. The author has been notified.");
1.403     albertel 2118: 	}
1.413     albertel 2119: 	my $host=$Apache::lonnet::perlvar{'lonHostID'};
1.476     bisitz   2120: 	push(@errors,
                   2121:         &mt("The error occurred on host [_1]",
                   2122:              "<tt>$host</tt>"));
1.454     albertel 2123: 
                   2124: 	my $msg = join('<br />', @errors);
                   2125: 
1.336     albertel 2126: 	#notify author
1.403     albertel 2127: 	&Apache::lonmsg::author_res_msg($env{'request.filename'},$msg);
1.336     albertel 2128: 	#notify course
1.372     albertel 2129: 	if ( $symb && $env{'request.course.id'} ) {
1.380     www      2130: 	    my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
                   2131: 	    my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1.440     albertel 2132: 	    my (undef,%users)=&Apache::lonmsg::decide_receiver(undef,0,1,1,1);
1.372     albertel 2133: 	    my $declutter=&Apache::lonnet::declutter($env{'request.filename'});
1.435     raeburn  2134:             my $baseurl = &Apache::lonnet::clutter($declutter);
1.336     albertel 2135: 	    my @userlist;
1.551     raeburn  2136: 	    foreach (keys(%users)) {
1.336     albertel 2137: 		my ($user,$domain) = split(/:/, $_);
1.531     bisitz   2138: 		push(@userlist,"$user:$domain");
1.380     www      2139: 		my $key=$declutter.'_'.$user.'_'.$domain;
                   2140: 		my %lastnotified=&Apache::lonnet::get('nohist_xmlerrornotifications',
                   2141: 						      [$key],
                   2142: 						      $cdom,$cnum);
                   2143: 		my $now=time;
                   2144: 		if ($now-$lastnotified{$key}>86400) {
1.434     raeburn  2145:                     my $title = &Apache::lonnet::gettitle($symb);
                   2146:                     my $sentmessage;
1.380     www      2147: 		    &Apache::lonmsg::user_normal_msg($user,$domain,
1.435     raeburn  2148: 		        "Error [$title]",$msg,'',$baseurl,'','',
1.434     raeburn  2149:                         \$sentmessage,$symb,$title,1);
1.380     www      2150: 		    &Apache::lonnet::put('nohist_xmlerrornotifications',
                   2151: 					 {$key => $now},
                   2152: 					 $cdom,$cnum);		
                   2153: 		}
1.336     albertel 2154: 	    }
1.372     albertel 2155: 	    if ($env{'request.role.adv'}) {
1.486     bisitz   2156: 		$errormsg=&mt("An error occurred while processing this resource. The course personnel ([_1]) and the author have been notified.",join(', ',@userlist));
1.336     albertel 2157: 	    } else {
1.486     bisitz   2158: 		$errormsg=&mt("An error occurred while processing this resource. The instructor has been notified.");
1.336     albertel 2159: 	    }
                   2160: 	}
1.531     bisitz   2161: 	push(@Apache::lonxml::error_messages,"<span class=\"LC_warning\">$errormsg</span><br />");
1.52      albertel 2162:     }
1.22      albertel 2163: }
1.49      albertel 2164: 
1.22      albertel 2165: sub warning {
1.295     albertel 2166:     $warningcount++;
1.261     albertel 2167:   
1.372     albertel 2168:     if ($env{'form.grade_target'} ne 'tex') {
1.348     albertel 2169: 	if ( &show_error_warn_msg() ) {
1.309     albertel 2170: 	    push(@Apache::lonxml::warning_messages,
1.484     bisitz   2171: 		 $Apache::lonxml::warnings_error_header
                   2172:                 .'<div class="LC_warning">'
                   2173:                 .&mt('[_1]W[_2]ARNING','<b>','</b>')."<b>:</b> ".join('<br />',@_)
                   2174:                 ."</div>\n"
1.482     bisitz   2175:                 );
1.295     albertel 2176: 	    $Apache::lonxml::warnings_error_header='';
                   2177: 	}
                   2178:     }
1.309     albertel 2179: }
                   2180: 
                   2181: sub info {
1.372     albertel 2182:     if ($env{'form.grade_target'} ne 'tex' 
                   2183: 	&& $env{'request.state'} eq 'construct') {
1.309     albertel 2184: 	push(@Apache::lonxml::info_messages,join('<br />',@_)."<br />\n");
                   2185:     }
                   2186: }
                   2187: 
                   2188: sub message_location {
                   2189:     return '__LONCAPA_INTERNAL_MESSAGE_LOCATION__';
                   2190: }
                   2191: 
                   2192: sub add_messages {
                   2193:     my ($msg)=@_;
                   2194:     my $result=join(' ',
                   2195: 		    @Apache::lonxml::info_messages,
                   2196: 		    @Apache::lonxml::error_messages,
                   2197: 		    @Apache::lonxml::warning_messages);
                   2198:     undef(@Apache::lonxml::info_messages);
                   2199:     undef(@Apache::lonxml::error_messages);
                   2200:     undef(@Apache::lonxml::warning_messages);
                   2201:     $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__/$result/;
                   2202:     $$msg=~s/__LONCAPA_INTERNAL_MESSAGE_LOCATION__//g;
1.83      albertel 2203: }
                   2204: 
                   2205: sub get_param {
1.535     foxr     2206:     my ($param,$parstack,$safeeval,$context,$case_insensitive, $noelide) = @_;
                   2207: 
1.213     albertel 2208:     if ( ! $context ) { $context = -1; }
                   2209:     my $args ='';
                   2210:     if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297     sakharuk 2211:     if ( ! $Apache::lonxml::usestyle ) {
                   2212: 	$args=$Apache::lonxml::style_values.$args;
                   2213:     }
1.535     foxr     2214: 
                   2215: 
                   2216:     if ($noelide) {
                   2217: #	$args =~ s/\\'/'/g;
                   2218: 	$args =~ s/'\$/'\\\$/g;
                   2219:     }
                   2220: 
1.213     albertel 2221:     if ( ! $args ) { return undef; }
                   2222:     if ( $case_insensitive ) {
1.417     albertel 2223: 	if ($args =~ s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei) {
1.535     foxr     2224: 
1.213     albertel 2225: 	    return &Apache::run::run("{$args;".'return $'.$param.'}',
                   2226:                                      $safeeval); #'
                   2227: 	} else {
                   2228: 	    return undef;
                   2229: 	}
                   2230:     } else {
1.417     albertel 2231: 	if ( $args =~ /my .*\$\Q$param\E[,\)]/ ) {
1.535     foxr     2232: 	    
1.213     albertel 2233: 	    return &Apache::run::run("{$args;".'return $'.$param.'}',
                   2234:                                      $safeeval); #'
                   2235: 	} else {
                   2236: 	    return undef;
                   2237: 	}
                   2238:     }
1.22      albertel 2239: }
                   2240: 
1.132     albertel 2241: sub get_param_var {
1.213     albertel 2242:   my ($param,$parstack,$safeeval,$context,$case_insensitive) = @_;
1.132     albertel 2243:   if ( ! $context ) { $context = -1; }
                   2244:   my $args ='';
                   2245:   if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
1.297     sakharuk 2246:   if ( ! $Apache::lonxml::usestyle ) {
                   2247:       $args=$Apache::lonxml::style_values.$args;
                   2248:   }
1.230     albertel 2249:   &Apache::lonxml::debug("Args are $args param is $param");
1.213     albertel 2250:   if ($case_insensitive) {
1.419     albertel 2251:       if (! ($args=~s/(my (?:.*))(\$\Q$param\E[,\)])/$1.lc($2)/ei)) {
1.213     albertel 2252: 	  return undef;
                   2253:       }
1.419     albertel 2254:   } elsif ( $args !~ /my .*\$\Q$param\E[,\)]/ ) { return undef; }
1.132     albertel 2255:   my $value=&Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
1.230     albertel 2256:   &Apache::lonxml::debug("first run is $value");
1.341     albertel 2257:   if ($value =~ /^[\$\@\%][a-zA-Z_]\w*$/) {
1.230     albertel 2258:       &Apache::lonxml::debug("doing second");
                   2259:       my @result=&Apache::run::run("return $value",$safeeval,1);
                   2260:       if (!defined($result[0])) {
                   2261: 	  return $value
                   2262:       } else {
                   2263: 	  if (wantarray) { return @result; } else { return $result[0]; }
                   2264:       }
1.132     albertel 2265:   } else {
                   2266:     return $value;
                   2267:   }
                   2268: }
                   2269: 
1.438     albertel 2270: sub register_insert_xml {
                   2271:     my $parser = HTML::LCParser->new($Apache::lonnet::perlvar{'lonTabDir'}
                   2272: 				     .'/insertlist.xml');
                   2273:     my ($tagnum,$in_help)=(0,0);
1.442     albertel 2274:     my @alltags;
1.438     albertel 2275:     my $tag;
                   2276:     while (my $token = $parser->get_token()) {
                   2277: 	if ($token->[0] eq 'S') {
                   2278: 	    my $key;
1.525     raeburn  2279: 	    if ($token->[1] eq 'tag') {
1.438     albertel 2280: 		$tag = $token->[2]{'name'};
1.525     raeburn  2281:                 if (defined($tag)) {
                   2282: 		    $insertlist{$tagnum.'.tag'} = $tag;
                   2283: 		    $insertlist{$tag.'.num'}   = $tagnum;
                   2284: 		    push(@alltags,$tag);
                   2285:                 }
1.438     albertel 2286: 	    } elsif ($in_help && $token->[1] eq 'file') {
                   2287: 		$key = $tag.'.helpfile';
                   2288: 	    } elsif ($in_help && $token->[1] eq 'description') {
                   2289: 		$key = $tag.'.helpdesc';
                   2290: 	    } elsif ($token->[1] eq 'description' ||
                   2291: 		     $token->[1] eq 'color'       ||
                   2292: 		     $token->[1] eq 'show'          ) {
                   2293: 		$key = $tag.'.'.$token->[1];
                   2294: 	    } elsif ($token->[1] eq 'insert_sub') {
                   2295: 		$key = $tag.'.function';
                   2296: 	    } elsif ($token->[1] eq 'help') {
                   2297: 		$in_help=1;
                   2298: 	    } elsif ($token->[1] eq 'allow') {
1.442     albertel 2299: 		$key = $tag.'.allow';
1.438     albertel 2300: 	    }
                   2301: 	    if (defined($key)) {
                   2302: 		$insertlist{$key} = $parser->get_text();
                   2303: 		$insertlist{$key} =~ s/(^\s*|\s*$ )//gx;
                   2304: 	    }
                   2305: 	} elsif ($token->[0] eq 'E') {
                   2306: 	    if      ($token->[1] eq 'tag') {
                   2307: 		undef($tag);
                   2308: 		$tagnum++;
                   2309: 	    } elsif ($token->[1] eq 'help') {
                   2310: 		undef($in_help);
                   2311: 	    }
                   2312: 	}
                   2313:     }
1.442     albertel 2314:     
                   2315:     # parse the allows and ignore tags set to <show>no</show>
                   2316:     foreach my $tag (@alltags) {	
1.519     raeburn  2317:         next if (!exists($insertlist{$tag.'.allow'}));
                   2318: 	my $allow =  $insertlist{$tag.'.allow'};
1.442     albertel 2319:        	foreach my $element (split(',',$allow)) {
                   2320: 	    $element =~ s/(^\s*|\s*$ )//gx;
1.519     raeburn  2321: 	    if (!exists($insertlist{$element.'.show'})
                   2322:                 || $insertlist{$element.'.show'} ne 'no') {
1.442     albertel 2323: 		push(@{ $insertlist{$tag.'.which'} },$element);
                   2324: 	    }
                   2325: 	}
                   2326:     }
1.438     albertel 2327: }
                   2328: 
                   2329: sub register_insert {
                   2330:     return &register_insert_xml(@_);
                   2331: #    &dump_insertlist('2');
                   2332: }
                   2333: 
                   2334: sub dump_insertlist {
                   2335:     my ($ext) = @_;
1.559     raeburn  2336:     open(XML,">","/tmp/insertlist.xml.$ext");
1.438     albertel 2337:     print XML ("<insertlist>");
                   2338:     my $i=0;
                   2339: 
                   2340:     while (exists($insertlist{"$i.tag"})) {
                   2341: 	my $tag = $insertlist{"$i.tag"};
                   2342: 	print XML ("
                   2343: \t<tag name=\"$tag\">");
                   2344: 	if (defined($insertlist{"$tag.description"})) {
                   2345: 	    print XML ("
                   2346: \t\t<description>".$insertlist{"$tag.description"}."</description>");
                   2347: 	}
                   2348: 	if (defined($insertlist{"$tag.color"})) {
                   2349: 	    print XML ("
                   2350: \t\t<color>".$insertlist{"$tag.color"}."</color>");
                   2351: 	}
                   2352: 	if (defined($insertlist{"$tag.function"})) {
                   2353: 	    print XML ("
                   2354: \t\t<insert_sub>".$insertlist{"$tag.function"}."</insert_sub>");
                   2355: 	}
                   2356: 	if (defined($insertlist{"$tag.show"})
                   2357: 	    && $insertlist{"$tag.show"} ne 'yes') {
                   2358: 	    print XML ("
                   2359: \t\t<show>".$insertlist{"$tag.show"}."</show>");
                   2360: 	}
                   2361: 	if (defined($insertlist{"$tag.helpfile"})) {
                   2362: 	    print XML ("
                   2363: \t\t<help>
                   2364: \t\t\t<file>".$insertlist{"$tag.helpfile"}."</file>");
                   2365: 	    if ($insertlist{"$tag.helpdesc"} ne '') {
                   2366: 		print XML ("
                   2367: \t\t\t<description>".$insertlist{"$tag.helpdesc"}."</description>");
                   2368: 	    }
                   2369: 	    print XML ("
                   2370: \t\t</help>");
                   2371: 	}
                   2372: 	if (defined($insertlist{"$tag.which"})) {
                   2373: 	    print XML ("
                   2374: \t\t<allow>".join(',',sort(@{ $insertlist{"$tag.which"} }))."</allow>");
                   2375: 	}
                   2376: 	print XML ("
                   2377: \t</tag>");
                   2378: 	$i++;
                   2379:     }
                   2380:     print XML ("\n</insertlist>\n");
                   2381:     close(XML);
                   2382: }
                   2383: 
1.98      albertel 2384: sub description {
1.437     albertel 2385:     my ($token)=@_;
                   2386:     my $tag = &get_tag($token);
                   2387:     return $insertlist{$tag.'.description'};
1.268     bowersj2 2388: }
                   2389: 
                   2390: # Returns a list containing the help file, and the description
                   2391: sub helpinfo {
1.437     albertel 2392:     my ($token)=@_;
                   2393:     my $tag = &get_tag($token);
1.545     bisitz   2394:     return ($insertlist{$tag.'.helpfile'}, &mt($insertlist{$tag.'.helpdesc'}));
1.437     albertel 2395: }
                   2396: 
                   2397: sub get_tag {
                   2398:     my ($token)=@_;
                   2399:     my $tagnum;
                   2400:     my $tag=$token->[1];
                   2401:     foreach my $namespace (reverse(@Apache::lonxml::namespace)) {
                   2402: 	my $testtag = $namespace.'::'.$tag;
                   2403: 	$tagnum = $insertlist{"$testtag.num"};
                   2404: 	last if (defined($tagnum));
                   2405:     }
                   2406:     if (!defined($tagnum)) {
                   2407: 	$tagnum = $Apache::lonxml::insertlist{"$tag.num"};
                   2408:     }
                   2409:     return $insertlist{"$tagnum.tag"};
1.98      albertel 2410: }
1.123     albertel 2411: 
1.485     onken    2412: ############################################################
                   2413: #                                           PDF-FORM-METHODS
                   2414: 
                   2415: =pod
                   2416: 
1.508     onken    2417: =item &print_pdf_radiobutton(fieldname, value)
1.485     onken    2418: 
1.508     onken    2419: Returns a latexline to generate a PDF-Form-Radiobutton.
                   2420: Note: Radiobuttons with equal names are automaticly grouped 
                   2421:       in a selection-group.
1.485     onken    2422: 
1.508     onken    2423: $fieldname: PDF internalname of the radiobutton(group)
                   2424: $value:     Value of radiobutton
1.485     onken    2425: 
                   2426: =cut
                   2427: sub print_pdf_radiobutton {
1.508     onken    2428:     my ($fieldname, $value) = @_;
                   2429:     return '\radioButton[\symbolchoice{circle}]{'
                   2430:            .$fieldname.'}{10bp}{10bp}{'.$value.'}';
1.485     onken    2431: }
                   2432: 
                   2433: 
                   2434: =pod
                   2435: 
                   2436: =item &print_pdf_start_combobox(fieldname)
                   2437: 
                   2438: Starts a latexline to generate a PDF-Form-Combobox with text.
                   2439: 
                   2440: $fieldname: PDF internal name of the Combobox
                   2441: 
                   2442: =cut
                   2443: sub print_pdf_start_combobox {
                   2444:     my $result;
                   2445:     my ($fieldName) = @_;
                   2446:     $result .= '\begin{tabularx}{\textwidth}{p{2.5cm}X}'."\n";
                   2447:     $result .= '\comboBox[]{'.$fieldName.'}{2.3cm}{14bp}{'; # 
                   2448: 
                   2449:     return $result;
                   2450: }
                   2451: 
                   2452: 
                   2453: =pod
                   2454: 
                   2455: =item &print_pdf_add_combobox_option(options)
                   2456: 
                   2457: Generates a latexline to add Options to a PDF-Form-ComboBox.
                   2458: 
                   2459: $option: PDF internal name of the Combobox-Option
                   2460: 
                   2461: =cut
                   2462: sub print_pdf_add_combobox_option {
                   2463: 
                   2464:     my $result;
                   2465:     my ($option) = @_;  
                   2466: 
                   2467:     $result .= '('.$option.')';
                   2468:     
                   2469:     return $result;
                   2470: }
                   2471: 
                   2472: 
                   2473: =pod
                   2474: 
                   2475: =item &print_pdf_end_combobox(text) {
                   2476: 
                   2477: Returns latexcode to end a PDF-Form-Combobox with text.
                   2478: 
                   2479: =cut
                   2480: sub print_pdf_end_combobox {
                   2481:     my $result;
                   2482:     my ($text) = @_;
                   2483: 
                   2484:     $result .= '}&'.$text."\\\\\n";
                   2485:     $result .= '\end{tabularx}' . "\n";
                   2486:     $result .= '\hspace{2mm}' . "\n";
                   2487:     return $result;
                   2488: }
                   2489: 
                   2490: 
                   2491: =pod
                   2492: 
                   2493: =item &print_pdf_hiddenField(fieldname, user, domain)
                   2494: 
                   2495: Returns a latexline to generate a PDF-Form-hiddenField with userdata.
                   2496: 
                   2497: $fieldname label for hiddentextfield
                   2498: $user:    name of user
                   2499: $domain:  domain of user
                   2500: 
                   2501: =cut
                   2502: sub print_pdf_hiddenfield {
                   2503:     my $result;
                   2504:     my ($fieldname, $user, $domain) = @_;
                   2505: 
                   2506:     $result .= '\textField [\F{\FHidden}\F{-\FPrint}\V{'.$domain.'&'.$user.'}]{'.$fieldname.'}{0in}{0in}'."\n";
                   2507: 
                   2508:     return $result;
                   2509: }
                   2510: 
1.1       sakharuk 2511: 1;
                   2512: __END__
1.68      www      2513: 

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