# The LearningOnline Network with CAPA # definition of tags that give a structure to a document # # $Id: structuretags.pm,v 1.132 2002/11/06 23:05:02 albertel Exp $ # # Copyright Michigan State University Board of Trustees # # This file is part of the LearningOnline Network with CAPA (LON-CAPA). # # LON-CAPA is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # LON-CAPA is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with LON-CAPA; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA # # /home/httpd/html/adm/gpl.txt # # http://www.lon-capa.org/ # # 2/19 Guy # 6/26/2001 fixed extra web display at end of tags # 8/17,8/18,8/20 Gerd Kortemeyer package Apache::structuretags; use strict; use Apache::lonnet; use Apache::File(); BEGIN { &Apache::lonxml::register('Apache::structuretags',('block','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext')); # &Apache::lonxml::register_insert('problem','',('part','postanswerdate','preduedate')) } sub start_web { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $bodytext=&Apache::lonxml::get_all_text("/web",$$parser[$#$parser]); if ($target eq 'web') { return $bodytext; } return ''; } sub end_web { return ''; } sub start_tex { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $bodytext=&Apache::lonxml::get_all_text("/tex",$$parser[$#$parser]); if ($target eq 'tex') { return $bodytext.' '; } return ''; } sub end_tex { return ''; } sub page_start { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my %found; foreach my $taginside ($tagstack) { foreach my $taglookedfor ('html','body','form') { if ($taginside =~ /^$taglookedfor$/i) { $found{$taglookedfor} = 1; } } } my $result; my $head_tag_start; if (!defined($found{'html'})) { $result=&Apache::londefdef::start_html($target,$token,$tagstack,$parstack, $parser,$safeeval); $head_tag_start=''.&Apache::lonxml::registerurl(undef,$target); } my $body_tag_start; if (!defined($found{'body'})) { $body_tag_start=''; } return ($result,$head_tag_start,$body_tag_start,$form_tag_start); } sub get_resource_name { my ($parstack,$safeeval)=@_; my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval); if ($name eq '') { $name=&Apache::lonnet::EXT('resource.title'); if ($name eq 'con_lost') { $name = ''; } } $Apache::lonhomework::name=$name; return $name; } sub setup_rndseed { my ($safeeval)=@_; my $rndseed; if ($ENV{'request.state'} eq "construct") { $rndseed=$ENV{'form.rndseed'}; if (!$rndseed) { $rndseed=time; $ENV{'form.rndseed'}=$rndseed; } &Apache::run::run('$external::randomseed='.$rndseed.';',$safeeval); } return $rndseed; } sub problem_edit_header { return '

 

'; } sub problem_edit_footer { return '
'; } sub problem_web_to_edit_header { my ($rndseed)=@_; my $result.=' Random Seed:
'; return $result; } sub initialize_storage { %Apache::lonhomework::results=(); my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); if ($ENV{'request.state'} eq 'construct') { %Apache::lonhomework::history= &Apache::lonnet::tmprestore($ENV{'request.uri'},'',$domain,$name); my ($temp)=keys %Apache::lonhomework::history ; &Apache::lonxml::debug("Return message of $temp"); } else { %Apache::lonhomework::history= &Apache::lonnet::restore($symb,$courseid,$domain,$name); } #ignore error conditions my ($temp)=keys %Apache::lonhomework::history ; if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); } } # -------------------------------------------------------------finalize_storage # Stores away the result has to a student's environment # checks form.grade_ for specific values, other wises stores # to the running users environment sub finalize_storage { my $result; my ($temp) = keys %Apache::lonhomework::results; if ( $temp ne '' ) { my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); if ($ENV{'request.state'} eq 'construct') { $result=&Apache::lonnet::tmpstore(\%Apache::lonhomework::results, $ENV{'request.uri'},'',$domain,$name); &Apache::lonxml::debug('Construct Store return message:'.$result); } else { $result=&Apache::lonnet::cstore(\%Apache::lonhomework::results, $symb,$courseid,$domain,$name); &Apache::lonxml::debug('Store return message:'.$result); } } return $result; } sub checkout_msg { return (<The resource needs to be checked out As a resource gets checked out, a unique timestamped ID is given to it, and a permanent record is left in the system.

Checking out resources is subject to course policies, and may exclude future credit even if done erroneously.

ENDCHECKOUT } sub start_problem { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; # meta is called from lonpublisher, which doesn't uses the normal # lonhomework method of parsing the file which means that inputtags # won't get reset if ( $Apache::inputtags::part ne '' && $target != 'meta' ) { &Apache::lonxml::error('Only one problem allowed in a .problem file'); my $bodytext=&Apache::lonxml::get_all_text("/problem",$$parser[-1]); return ''; } #intialize globals $Apache::inputtags::part='0'; @Apache::inputtags::responselist = (); @Apache::inputtags::previous=(); if ($target ne 'analyze') { &initialize_storage(); if ($target eq 'web') { &Apache::lonhomework::showhash(%Apache::lonhomework::history); } $Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type'); &Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:"); } if ($Apache::lonhomework::type eq '') { my $uri=$ENV{'request.uri'}; if ($uri=~/\.(\w+)$/) { $Apache::lonhomework::type=$1; &Apache::lonxml::debug("Using type of $1"); } else { $Apache::lonhomework::type='problem'; &Apache::lonxml::debug("Using default type, problem, :$uri:"); } } #added vars to the scripting enviroment my $expression='$external::part='.$Apache::inputtags::part.';'; &Apache::run::run($expression,$safeeval); my $status; my $accessmsg; #should get back a or the neccesary stuff to start XML/MathML my ($result,$head_tag_start,$body_tag_start,$form_tag_start)= &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval); if ($target eq 'tex' and $ENV{'request.symb'} =~ m/\.page_/) { $result = '';} if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') { #handle exam checkout if ($Apache::lonhomework::type eq 'exam') { my $token=$Apache::lonhomework::history{"resource.0.outtoken"}; if (($ENV{'form.doescheckout'}) && (!$token)) { $token=&Apache::lonxml::maketoken(); $Apache::lonhomework::history{"resource.0.outtoken"}=$token; } $body_tag_start.=&Apache::lonxml::printtokenheader($target,$token); } #handle rand seed in construction space my $rndseed=&setup_rndseed($safeeval); ($status,$accessmsg) = &Apache::lonhomework::check_access('0'); push (@Apache::inputtags::status,$status); my $expression='$external::datestatus="'.$status.'";'; $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";'; &Apache::run::run($expression,$safeeval); &Apache::lonxml::debug("Got $status"); if (( $status eq 'CLOSED' ) || ( $status eq 'UNCHECKEDOUT') || ( $status eq 'BANNED')) { my $bodytext=&Apache::lonxml::get_all_text("/problem",$parser); if ( $target eq "web" ) { $result.= $head_tag_start.''; my $msg=$body_tag_start. '

Not open to be viewed

'; if ($status eq 'CLOSED') { $msg.='The problem '.$accessmsg; } elsif ($status eq 'UNCHECKEDOUT') { $msg.=&checkout_msg; } $result.=$msg.'
'; } elsif ($target eq 'tex') { $result.="\\begin{document}\\noindent \\vskip 1 mm \\begin{minipage}{\\textwidth}\\vskip 0 mm Problem is not open to be viewed. It $accessmsg \\vskip 0 mm "; } } elsif ($target eq 'web') { my $name= &get_resource_name($parstack,$safeeval); if ($status eq 'CAN_ANSWER') { # create a page header and exit $result.="$head_tag_start$name $body_tag_start \n $form_tag_start". ''; if ($ENV{'request.state'} eq "construct") { $result.= &problem_web_to_edit_header($rndseed); } # if we are viewing someone else preserve that info if (defined $ENV{'form.grade_symb'}) { foreach my $field ('symb','courseid','domain','username') { $result .= ''."\n"; } } } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER' || $status eq 'CLOSED') { $result.=$head_tag_start. "$name\n$body_tag_start\n"; } } elsif ($target eq 'tex') { my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval); if ($name eq '') { $name=&Apache::lonnet::EXT('resource.title'); if ($name eq 'con_lost') { $name = ''; } } $Apache::lonhomework::name=$name; my $id = $Apache::inputtags::part; my $duedate = &Apache::lonnet::EXT("resource.$id.duedate"); $duedate = POSIX::strftime("%c",localtime($duedate)); my $temp_file; my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.due"; if (-e $filename) { $temp_file = Apache::File->new($filename); } else { $temp_file = Apache::File->new('>>'.$filename); } my @due_file_content = <$temp_file>; my $due_file_content = $due_file_content[$#due_file_content]; chomp $due_file_content; if ($due_file_content ne $duedate) { $temp_file = Apache::File->new('>'.$filename); print $temp_file "$duedate\n"; if (not $ENV{'request.symb'} =~ m/\.page_/) { if(not $duedate=~m/1969/) { $result .= '\begin{document} \noindent\textit{Due date: '.$duedate.'} \vskip 1 mm\noindent \begin{minipage}{\textwidth}'; } else { $result .= '\begin{document} \noindent \vskip 1 mm \noindent\begin{minipage}{\textwidth}'; } } else { $result .= '\vskip 1mm\textit{Due date: '.$duedate.'} \\\\\\\\'; } } else { if (not $ENV{'request.symb'} =~ m/\.page_/) { $result .= '\begin{document} \noindent \vskip 1 mm\noindent\begin{minipage}{\textwidth}'; } else { $result .= '\vskip 1mm \\\\\\\\'; } } } } elsif ($target eq 'edit') { $result.=$head_tag_start."".$body_tag_start.$form_tag_start. &problem_edit_header(); my $temp=&Apache::edit::insertlist($target,$token); $result.=$temp; } elsif ($target eq 'modified') { $result=$token->[4]; $result.=&Apache::edit::handle_insert(); } else { # page_start returned a starting result, delete it if we don't need it $result = ''; } return $result; } sub end_problem { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $result=''; my $status=$Apache::inputtags::status['-1']; if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' || $target eq 'tex') { if ( $target eq 'grade' && $Apache::inputtags::part eq '0') { # if part is zero, no s existed, so we need to the grading &Apache::inputtags::grade; } elsif ( ($target eq 'web' || $target eq 'tex') && $Apache::inputtags::part eq '0' && $status ne 'UNCHECKEDOUT') { # if part is zero, no s existed, so we need show the current # grading status my $gradestatus = &Apache::inputtags::gradestatus($Apache::inputtags::part,$target); if ($Apache::lonhomework::type ne 'exam') {$result.= $gradestatus;} } if ( (($target eq 'web') && ($ENV{'request.state'} ne 'construct')) || ($target eq 'answer') || ($target eq 'tex') ) { if ($status eq 'CAN_ANSWER') { if ($target ne 'tex') { $result.="\n"; } } elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER' || $status eq 'UNCHECKEDOUT' ) { if ($target ne 'tex') { $result.="\n"; } } if ($target ne 'tex') { $result.=&Apache::lonxml::xmlend(); } else { $result .= '\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}'; if (not $ENV{'request.symb'} =~ m/\.page_/) { $result .= '\end{minipage}\end{document} '; } else { $result .= ''; } } } if ($target eq 'grade') { &Apache::lonhomework::showhash(%Apache::lonhomework::results); &finalize_storage(); } } elsif ($target eq 'meta') { if ($Apache::inputtags::part eq '0') { $result=&Apache::response::mandatory_part_meta; } } elsif ($target eq 'edit') { &Apache::lonxml::debug("in end_problem with $target, edit"); $result = &problem_edit_footer(); } return $result; } sub start_library { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my ($result,$head_tag_start,$body_tag_start,$form_tag_start); if ($target eq 'edit') { ($result,$head_tag_start,$body_tag_start,$form_tag_start)= &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval); $result.=$head_tag_start."".$body_tag_start.$form_tag_start. &problem_edit_header(); my $temp=&Apache::edit::insertlist($target,$token); $result.=$temp; } elsif ($target eq 'modified') { $result=$token->[4]; $result.=&Apache::edit::handle_insert(); } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' && $ENV{'request.state'} eq "construct" ) { ($result,$head_tag_start,$body_tag_start,$form_tag_start)= &page_start($target,$token,$tagstack,$parstack,$parser,$safeeval); my $name=&get_resource_name($parstack,$safeeval); my $rndseed=&setup_rndseed($safeeval); $result.="$head_tag_start$name $body_tag_start \n $form_tag_start". ''; $result.=&problem_web_to_edit_header($rndseed); } return $result; } sub end_library { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $result=''; if ($target eq 'edit') { $result=&problem_edit_footer(); } elsif ($target eq 'web' && $$tagstack[0] ne 'problem' && $ENV{'request.state'} eq "construct") { $result.=''.&Apache::lonxml::xmlend(); } return $result; } sub start_block { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $result; if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex' || $target eq 'analyze') { my $code = @$parstack[$#$parstack]; if ($code) { $code =~ s/\"//g; $code .=';return $condition;'; $result = &Apache::run::run($code,$safeeval); &Apache::lonxml::debug("block :$code: returned :$result:"); } else { $result='1'; } if ( ! $result ) { my $skip=&Apache::lonxml::get_all_text("/block",$$parser[-1]); &Apache::lonxml::debug("skipping ahead :$skip: $$parser[-1]"); } $result=''; } elsif ($target eq 'edit') { $result .=&Apache::edit::tag_start($target,$token); $result .=&Apache::edit::text_arg('Test Condition:','condition', $token,40); $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row(); } elsif ($target eq 'modified') { my $constructtag=&Apache::edit::get_new_args($token,$parstack, $safeeval,'condition'); if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); } } return $result; } sub end_block { return ''; } sub start_while { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $code = @$parstack[$#$parstack]; $code =~ s/\"//g; $code .=';return $condition;'; push( @Apache::structuretags::whileconds, $code); my $result = &Apache::run::run($code,$safeeval); my $bodytext=$$parser[$#$parser]->get_text("/while"); push( @Apache::structuretags::whilebody, $bodytext); if ( $result ) { &Apache::lonxml::newparser($parser,\$bodytext); } return ""; } sub end_while { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $code = pop @Apache::structuretags::whileconds; my $bodytext = pop @Apache::structuretags::whilebody; my $result = &Apache::run::run($code,$safeeval); if ( $result ) { &Apache::lonxml::newparser($parser,\$bodytext); } return ""; } # # .. # .. # .. # ... # sub start_randomlist { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $result; if ($target eq 'answer' || $target eq 'grade' || $target eq 'web' || $target eq 'tex' || $target eq 'analyze') { my $body= &Apache::lonxml::get_all_text("/randomlist",$$parser[$#$parser]); my $b_parser= HTML::TokeParser->new(\$body); my $b_tok; my @randomlist; my $list_item; while($b_tok = $b_parser->get_token() ) { if($b_tok->[0] eq 'S') { # start tag # get content of the tag until matching end tag # get all text upto the matching tag # and push the content into @randomlist $list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],$b_parser); $list_item = "$b_tok->[4]"."$list_item"."[1]>"; push(@randomlist,$list_item); # print "
START-TAG $b_tok->[1], $b_tok->[4], $list_item"; } if($b_tok->[0] eq 'T') { # text # what to do with text in between tags? # print "TEXT $b_tok->[1]
"; } # if($b_tok->[0] eq 'E') { # end tag, should not happen # print "END-TAG $b_tok->[1]
"; # } } my @idx_arr = (0 .. $#randomlist); &Apache::structuretags::shuffle(\@idx_arr); my $bodytext = ''; my $show=$#randomlist; my $showarg=&Apache::lonxml::get_param('show',$parstack,$safeeval); $showarg--; if ( ($showarg >= 0) && ($showarg < $show) ) { $show = $showarg; } for(0 .. $show) { $bodytext .= "$randomlist[ $idx_arr[$_] ]"; } &Apache::lonxml::newparser($parser,\$bodytext); } elsif ($target eq 'edit' ) { $result .= &Apache::edit::tag_start($target,$token); $result .= &Apache::edit::text_arg('Maximum Tags to Show:','show',$token,5); $result .= &Apache::edit::end_row().&Apache::edit::start_spanning_row(); } elsif ($target eq 'modified' ) { my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval, 'show'); if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); } } return $result; } sub shuffle { my $a=shift; my $i; if (defined(@$a)) { &Apache::response::setrandomnumber(); for($i=@$a;--$i;) { my $j=int(&Math::Random::random_uniform() * ($i+1)); next if $i == $j; @$a[$i,$j] = @$a[$j,$i]; } } } sub end_randomlist { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $result; if ($target eq 'edit' ) { $result=&Apache::edit::tag_end($target,$token,'End Randomly Parsed Block'); } return $result; } sub start_part { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $result=''; my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval); if ($id eq '') { $id = $Apache::lonxml::curdepth; } $Apache::inputtags::part=$id; @Apache::inputtags::responselist = (); @Apache::inputtags::previous=(); if ($target eq 'meta') { return &Apache::response::mandatory_part_meta; } elsif ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') { my ($status,$accessmsg) = &Apache::lonhomework::check_access($id); push (@Apache::inputtags::status,$status); my $expression='$external::datestatus="'.$status.'";'; $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";'; &Apache::run::run($expression,$safeeval); if ( $status eq 'CLOSED' ) { my $bodytext=&Apache::lonxml::get_all_text("/part",$$parser[$#$parser]); if ( $target eq "web" ) { $result="
Part is not open to be viewed. It $accessmsg
"; } elsif ( $target eq 'tex' ) { $result="\\end{minipage}\\vskip 0 mm Part is not open to be viewed. It $accessmsg \\\\\\begin{minipage}{\\textwidth}"; } } else { if ($target eq 'tex') { if ($$tagstack[-2] ne 'problem') { $result.='\noindent \end{minipage}\vskip 0 mm \noindent \begin{minipage}{\textwidth}\noindent'; } } } } return $result; } sub end_part { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; &Apache::lonxml::debug("in end_part $target "); my $status=$Apache::inputtags::status['-1']; pop @Apache::inputtags::status; if ( $target eq 'meta' ) { return ''; } if ( $target eq 'grade' && $status eq 'CAN_ANSWER') { return &Apache::inputtags::grade; } if ($target eq 'web' || $target eq 'tex' ) { my $gradestatus=&Apache::inputtags::gradestatus($Apache::inputtags::part,$target); if ($Apache::lonhomework::type eq 'exam') {$gradestatus='';} return $gradestatus; } return ''; } sub start_preduedate { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') { if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' && $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER' ) { &Apache::lonxml::get_all_text("/preduedate",$$parser[$#$parser]); } } return ''; } sub end_preduedate { return ''; } sub start_postanswerdate { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; if ($target eq 'web' || $target eq 'grade' || $target eq 'tex') { if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') { &Apache::lonxml::get_all_text("/postanswerdate",$$parser[$#$parser]); } } elsif ($target eq 'tex') { return '\vskip 0 mm \noindent'; } return ''; } sub end_postanswerdate { return ''; } sub start_notsolved { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') { my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"}; &Apache::lonxml::debug("not solved has :$gradestatus:"); if ($gradestatus =~ /^correct/) { &Apache::lonxml::debug("skipping"); &Apache::lonxml::get_all_text("/notsolved",$$parser[$#$parser]); } } return ''; } sub end_notsolved { return ''; } sub start_solved { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' || $target eq 'tex') { my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"}; if ($gradestatus !~ /^correct/) { &Apache::lonxml::get_all_text("/solved",$$parser[$#$parser]); } } return ''; } sub end_solved { return ''; } sub start_startouttext { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my @result=(''.''); if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); } return (@result); } sub end_startouttext { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $result=''; my $text=''; if ($target eq 'edit') { $text=&Apache::lonxml::get_all_text("endouttext",$$parser[-1]); $result.=&Apache::edit::start_table($token)."Text Block Delete:". &Apache::edit::deletelist($target,$token) ." ". &Apache::edit::insertlist($target,$token). &Apache::edit::end_row().&Apache::edit::start_spanning_row()."\n". &Apache::edit::editfield($token->[1],$text,"",80,4); } if ($target eq 'modified') { $text=&Apache::lonxml::get_all_text("endouttext",$$parser['-1']); $result=''.&Apache::edit::modifiedfield(); } if ($target eq 'tex') { $result .= '\noindent '; } return $result; } sub start_endouttext { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my $result=''; if ($target eq "edit" ) { $result="".&Apache::edit::end_table()."\n"; } if ($target eq "modified") { $result=''. &Apache::edit::handle_insertafter('startouttext'); } return $result; } sub end_endouttext { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; my @result=('',''); if ($target eq "edit" || $target eq 'modified') { @result=('','no'); } return (@result); } sub delete_startouttext { my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; # my $text=&Apache::lonxml::get_all_text("endouttext",$$parser['-1']); my $text=$$parser['-1']->get_text("/endouttext"); my $ntoken=$$parser['-1']->get_token(); &Apache::lonxml::debug("Deleting :$text: and :$ntoken->[0]:$ntoken->[1]:$ntoken->[2]: for startouttext"); &Apache::lonxml::end_tag($tagstack,$parstack,$ntoken); # Deleting 2 parallel tag pairs, but we need the numbers later to look like # they did the last time round &Apache::lonxml::increasedepth($ntoken); &Apache::lonxml::decreasedepth($ntoken); return 1; } 1; __END__ 500 Internal Server Error

Internal Server Error

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Please contact the server administrator at root@localhost to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.