File:
[LON-CAPA] /
loncom /
homework /
randomlabel.pm
Revision
1.90:
download - view:
text,
annotated -
select for diffs
Wed Oct 17 22:11:55 2007 UTC (16 years, 10 months ago) by
albertel
Branches:
MAIN
CVS tags:
version_2_6_X,
version_2_6_3,
version_2_6_2,
version_2_6_1,
version_2_6_0,
version_2_5_99_1,
version_2_5_99_0,
HEAD
- BUG#5484, don't inster extra WS inside <label>
# The LearningOnline Network with CAPA
# random labelling tool
#
# $Id: randomlabel.pm,v 1.90 2007/10/17 22:11:55 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/
#
# SYNTAX:
# <randomlabel bgimg="URL" width="12" height="45" texwidth="50">
# <labelgroup name="GroupOne" type="image">
# <location x="123" y="456" />
# <location x="321" y="654" />
# <location x="213" y="546" />
# <label description="TEXT-1">IMG-URL</label>
# <label description="TEXT-2">IMG-URL</label>
# <label description="TEXT-3">IMG-URL</label>
# </labelgroup>
# <labelgroup name="GroupTwo" type="text">
# <location x="12" y="45" />
# <location x="32" y="65" />
# <location x="21" y="54" />
# <label>TEXT-1</label>
# <label>TEXT-2</label>
# <label>TEXT-3</label>
# </labelgroup>
# </randomlabel>
# ===========================================
# side effect:
# location (123,456): $GroupOne[0] = 2 # images give out indexes
# (321,654): $GroupOne[1] = 1
# (213,546): $GroupOne[2] = 0
# location (12,45) : $GroupTwo[0] = "TEXT-3"
# (32,65) : $GroupTwo[1] = "TEXT-1"
# (21,54) : $GroupTwo[2] = "TEXT-2"
# ===========================================
package Apache::randomlabel;
use Apache::lonnet;
use strict;
use Apache::edit;
use Apache::File();
use Apache::Constants qw(:common :http);
use Image::Magick;
use Apache::lonplot;
use LONCAPA;
my %args;
my $cgi_id;
my $scale_factor; # image scale factor.
my $label_xscale; # Label scale factor (needed for gnuplot).
my $label_yscale;
my $dirty_width_adjust = 5; # Width adjustment for e.g. gnuplot images.
BEGIN {
&Apache::lonxml::register('Apache::randomlabel',('randomlabel','labelgroup','location','label','bgimg'));
}
sub check_int {
# utility function to do error checking on a integer.
my ($num,$default) = @_;
$default = 100 if (! defined($default));
$num =~ s/\s+//g; # We dont need no stinkin white space!
# If it is a real, just grab the integer part.
($num,undef) = split (/\./,$num) if ($num =~ /\./);
# set to default if what we have left doesn't match anything...
$num = $default unless ($num =~/^\d+$/);
return $num;
}
# Get width/height from an image tag...
#
# Parameters:
# tag - tag potentially containing height/width attributes.
# def_width - Default width.
# def_height - Default height.
# Returns:
# list containing width/height.
#
sub extract_tag_sizes {
my ($tag, $dw, $dh) = @_;
$tag =~ s/\s+/ /g; # Collapse whitespace.
$tag =~ s/\s*=\s*/=/g; # kill space around ='s.
$tag =~ s/[<>\"]//g; # Get rid of the <">'s too.
&Apache::lonxml::debug("Compressed tag: $tag");
my @taglist = split(/ /,$tag);
foreach my $attribute (@taglist) {
if ($attribute =~ /^width/i) {
my ($e, $s)= split(/=/,$attribute);
$dw = $s;
}
if ($attribute =~ /^height/i) {
my ($e, $s) = split(/=/,$attribute);
$dh = $s;
}
}
return($dw, $dh);
}
my ($height_param,$width_param);
sub start_randomlabel {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
push (@Apache::lonxml::namespace,'randomlabel');
($height_param,$width_param)=(0,0);
$label_xscale = 1.0; # Assume image size not overridden.
$label_yscale = 1.0;
my $bgimg= &Apache::lonxml::get_param('bgimg',$parstack,$safeeval);
if ( defined($bgimg) && $bgimg !~ /^http:/ ) {
$bgimg=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$bgimg);
if (&Apache::lonnet::repcopy($bgimg) ne 'ok') {
$bgimg='/home/httpd/html/adm/lonKaputt/lonlogo_broken.gif';
}
}
$Apache::randomlabel::obj_cnt=0;
if ($target eq 'web') {
$cgi_id=&Apache::loncommon::get_cgi_id();
%args=();
$args{"cgi.$cgi_id.BGIMG"}=&escape($bgimg);
$height_param = &Apache::lonxml::get_param('height',$parstack, $safeeval);
$width_param = &Apache::lonxml::get_param('width', $parstack, $safeeval);
} elsif ($target eq 'tex' && defined($bgimg)) {
$result.=&make_eps_image($bgimg,$parstack,$safeeval);
} elsif ($target eq 'edit') {
my $only = join(',',&Apache::loncommon::filecategorytypes('Pictures'));
$result.=&Apache::edit::tag_start($target,$token);
$Apache::edit::bgimgsrc=
&Apache::lonxml::get_param('bgimg',$parstack,$safeeval);
$Apache::edit::bgimgsrccurdepth=$Apache::lonxml::curdepth;
$result.=&Apache::edit::text_arg('Image:','bgimg',$token,75).' ';
$result.=&Apache::edit::browse('bgimg',undef,undef,$only).' ';
$result.=&Apache::edit::search('bgimg').'<br />'.
&Apache::edit::text_arg('Width(pixel):' ,'width' ,$token,6).
&Apache::edit::text_arg('Height(pixel):','height' ,$token,6).
&Apache::edit::text_arg('TeXWidth(mm):' ,'texwidth',$token,6).
&Apache::edit::end_row().&Apache::edit::start_spanning_row();
} elsif ($target eq 'modified') {
my $constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'bgimg','width',
'height','texwidth');
if ($constructtag) {
$result = &Apache::edit::rebuild_tag($token);
}
}
return $result;
}
sub end_randomlabel {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
my $count;
pop @Apache::lonxml::namespace;
if ($target eq 'web') {
$count = $Apache::randomlabel::obj_cnt;
if( $count != 0) { $args{"cgi.$cgi_id.OBJCOUNT"}=$count; }
$result.='<img src="/adm/randomlabel.png?token='.$cgi_id.'" /><br />'."\n";
&Apache::lonnet::appenv(%args);
} elsif ($target eq 'tex') {
$result='\end{picture}\\\\';
$result.= ' \vskip -'.$height_param.' mm } \\\\ ';
} elsif ($target eq 'edit') {
$result.=&Apache::edit::end_table;
}
return $result;
}
sub start_bgimg {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
&Apache::lonxml::startredirection();
}
return $result;
}
sub end_bgimg {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
my $bgimg=&Apache::lonxml::endredirection();
if ($target eq 'web') {
# If the tag produced has sizes, they override ours.
# (for now anyway).
#
&Apache::lonxml::debug("Base sizes: $width_param x $height_param");
my ($plot_x, $plot_y) = &extract_tag_sizes($bgimg,
$width_param,
$height_param);
&Apache::lonxml::debug("Extracted sizes: $plot_x x $plot_y");
if ($width_param) {
$label_xscale = $plot_x / $width_param;
}
if ($height_param) {
$label_yscale = $plot_y / $height_param;
}
&Apache::lonxml::debug("Scale factors: $label_xscale $label_yscale");
&Apache::lonxml::debug("Image: $bgimg");
$bgimg=&Apache::imageresponse::clean_up_image($bgimg);
&Apache::lonxml::debug("Cleaned image: $bgimg");
$args{"cgi.$cgi_id.BGIMG"}=&escape($bgimg);
} elsif ($target eq 'tex') {
# Some bg images can create latex for us... e.g. gnuplot.
# If it looks like we have some latex use that,
# otherwise, assume this is a resource name that must
# be converted into the latex to create an eps insertion.
#
my $src = $bgimg;
$src =~ s/\s+$//s;
$src =~ s/^\s+//s;
#If this is a dynamically generated image, it will
#be in latex already, with a comment header that
#describes the dimensions:
if($src =~ /^%DYNAMICIMAGE:/) {
$Apache::lonxml::debug = 0;
&Apache::lonxml::debug("Dynamic image");
my ($commentline, $junk) = split(/\n/, $src);
&Apache::lonxml::debug("Comment line was: $commentline");
my $trash;
my $initial_width;
($trash, $initial_width, $height_param, $width_param) =
split(/:/,$commentline);
&Apache::lonxml::debug("internal web Width/height: $initial_width $height_param");
&Apache::lonxml::debug("Texwitdh: $width_param");
if($initial_width == 0) {
$initial_width = $width_param;
}
# strip off the comments since output does not always
# preserve \n's:
#
$src =~ s/$commentline//;
$scale_factor = $width_param / $initial_width;
$height_param = $height_param*$scale_factor;
$label_xscale = 1.0; # $scale_factor;
$label_yscale = 1.0; # $scale_factor;
&Apache::lonxml::debug("height $height_param");
&Apache::lonxml::debug("Width $width_param");
&Apache::lonxml::debug("Scale factors: $label_xscale $label_yscale");
my $dirty_width = $width_param + $dirty_width_adjust;
my $x_offset = -$dirty_width_adjust/2.0;
#
# Somewhere here it looks like height_param and
# width_param got backwards...
#
$result .= '\parbox{'.$dirty_width.'mm}{';
$result .= " $src \n";
$result .= '\setlength{\unitlength}{1mm}'."\n";
$result .= '\begin{picture}('."$width_param,$height_param)";
$result .= "($x_offset,-$height_param)";
$result .= "\n";
$Apache::lonxml::debug = 0;
} else {
$result.=&make_eps_image($bgimg,$parstack,$safeeval,-2);
}
}
}
return $result;
}
sub make_eps_image {
my ($bgimg,$parstack,$safeeval,$depth)=@_;
&Apache::lonxml::debug("image prior to get_eps_image: $bgimg");
my ($path,$file) = &Apache::londefdef::get_eps_image($bgimg);
&Apache::lonxml::debug("image after: $bgimg");
($height_param,$width_param)=
&Apache::londefdef::image_size($bgimg,0.3,$parstack,$safeeval,
$depth,1);
&Apache::lonxml::debug("Image size: $height_param x $width_param");
my $dirtywidth=$width_param+5;
my $result ="\n".'\vspace*{2mm}\noindent'."\n".
'\parbox{'.$dirtywidth.
' mm}{ \noindent \epsfxsize='.$width_param.
' mm \epsffile{'.$path.$file.
'}\setlength{\unitlength}{1mm}'."\n".' \begin{picture}('.
$width_param.','.$height_param.')(0,-'.$height_param.')'."\n";
my $magick = Image::Magick->new;
$magick->Read($bgimg);
my $initial_width = $magick->Get('width');
&Apache::lonxml::debug("ImageMagick thinks width is; $initial_width");
$scale_factor = $width_param / $initial_width;
return $result;
}
sub start_labelgroup {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
$type =~tr/A-Z/a-z/;
if ($target ne 'modified' && ($name =~ /\W/ || $name =~ /^[0-9]/)) {
&Apache::lonxml::error("Only _ a-z A-Z and 0-9 are allowed in the name to a labelgroup, and the first character can not be a number.<br />");
}
if ($target eq 'web' || $target eq 'tex' ||
$target eq 'grade' || $target eq 'answer' || $target eq 'analyze') {
$Apache::randomlabel::groupname=$name;
$Apache::randomlabel::type=$type;
@Apache::randomlabel::xcoord = ();
@Apache::randomlabel::ycoord = ();
@Apache::randomlabel::value = ();
@Apache::randomlabel::label_arr = ();
@Apache::randomlabel::description = ();
} elsif ($target eq 'edit') {
$result.=&Apache::edit::tag_start($target,$token);
$result.=&Apache::edit::text_arg('Name:','name',$token).
&Apache::edit::select_arg('Type:','type',['text','image'],$token);
if (!defined($token->[2]{'TeXsize'})) {
$token->[2]{'TeXsize'}='\normalsize';
}
$result.=&Apache::edit::select_arg('TeX font size:','TeXsize',
['\tiny','\scriptsize',
'\footnotesize','\small',
'\normalsize','\large','\Large',
'\LARGE','\huge','\Huge'],
$token);
$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
} elsif ($target eq 'modified') {
my $constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'name','type',
'TeXsize');
if ($constructtag) {
$result = &Apache::edit::rebuild_tag($token);
}
}
return $result;
}
#
# Utility sub to compute the width of a label.
#
sub get_label_width {
my $label = shift;
&Apache::lonxml::debug("image label = $label");
if (-e $label) {
&Apache::lonxml::debug("$label exists");
} else {
&Apache::lonxml::debug("$label does not exist");
}
my $magick = Image::Magick->new;
$magick->Read($label);
my $pixel_width = $magick->Get('width');
return $pixel_width * $scale_factor;
}
sub get_label_height {
my $label = shift;
&Apache::lonxml::debug("image label = $label");
if (-e $label) {
&Apache::lonxml::debug("$label exists");
} else {
&Apache::lonxml::debug("$label does not exist");
}
my $magick = Image::Magick->new;
$magick->Read($label);
my $pixel_height = $magick->Get('height');
return $pixel_height * $scale_factor;
}
sub add_vars {
my ($name,$order,$label,$labelorder,$value,$image,$safeeval) = @_;
if (!defined($name) || $name eq '') { return; }
my $code = '${'.$name."}{'".($order+1)."'}='".$label."';";
my $out=Apache::run::run($code,$safeeval);
if ($value) {
$code = '${'.$name."}{'value_".($order+1)."'}='".$value."';";
$out=Apache::run::run($code,$safeeval);
$code = '${'.$name."}{'labelvalue_".($labelorder+1)."'}='".$value."';";
$out=Apache::run::run($code,$safeeval);
}
if ($image) {
my $code = '${'.$name."}{'image_".($order+1)."'}='".$image."';";
my $out=Apache::run::run($code,$safeeval);
}
$code = '${'.$name."}{'numlocations'}='".($order+1)."';";
$out=Apache::run::run($code,$safeeval);
}
# begin to assign labels to locations
sub end_labelgroup {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $gname = $Apache::randomlabel::groupname;
my $type = $Apache::randomlabel::type;
my $result='';
if ($target eq 'web' || $target eq 'answer' || $target eq 'grade' ||
$target eq 'analyze') {
my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
&Apache::structuretags::shuffle(\@idx_arr);
for(0 .. $#Apache::randomlabel::label_arr) {
my $str;
my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$_] ]";
my $x = $Apache::randomlabel::xcoord[$_];
my $y = $Apache::randomlabel::ycoord[$_];
my $value = $Apache::randomlabel::value[$_];
my $i=$Apache::randomlabel::obj_cnt++;
if( $type eq 'text') {
&add_vars($gname,$_,$label,$idx_arr[$_],$value,'',$safeeval);
$str = join(':',$x,$y,&escape($label));
$args{"cgi.$cgi_id.OBJTYPE"}.='LABEL:';
} elsif ( $type eq 'image') {
&add_vars($gname,$_,
$Apache::randomlabel::description[$idx_arr[$_]],
$idx_arr[$_],$value,$label,$safeeval);
$str = join(':',$x,$y,&escape($label));
$args{"cgi.$cgi_id.OBJTYPE"}.='IMAGE:';
} else {
&Apache::lonxml::error('Unknown type of label :'.$type.':');
}
if ($target eq 'web') { $args{"cgi.$cgi_id.OBJ$i"} =$str; }
}
} elsif ($target eq 'tex') {
my $WX1=0; # Web x-coord. of upper left corner (ULC)
my $WY1=0; # Web y-coord. of (ULC)
my $wwidth=&Apache::lonxml::get_param('width',$parstack,$safeeval,-2);
my $wheight=&Apache::lonxml::get_param('height',$parstack,$safeeval,-2);
my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
if (!defined($TeXsize)) { $TeXsize='\\normalsize'; }
my @idx_arr = (0 .. $#Apache::randomlabel::label_arr);
&Apache::structuretags::shuffle(\@idx_arr);
&Apache::lonxml::debug("Array is:".$#Apache::randomlabel::label_arr.":");
$Apache::lonxml::debug = 0;
for(my $i=0;$i <= $#Apache::randomlabel::label_arr; $i++) {
my $label = "$Apache::randomlabel::label_arr[ $idx_arr[$i] ]";
my $x = $Apache::randomlabel::xcoord[$i];
my $y = $Apache::randomlabel::ycoord[$i];
if ( $type eq 'text' ) {
# FIXME the 3.5 here is the 'height' of the letter in TeX
$y=$y-3.5;
}
&Apache::lonxml::debug("initially: x= $x y= $y");
my $value = $Apache::randomlabel::value[$i];
#x latex coordinate
my $tcX=($x)*($width_param/$wwidth);
&Apache::lonxml::debug("wparam = $width_param wwidth = $wwidth, texx = $tcX");
#y latex coordinate
# my $ratio=($wwidth > 0 ? $wheight/$wwidth : 1 );
my $tcY=$height_param-$y*($height_param/$wheight);
if ( $type eq 'image') {
my $label_height = &get_label_height($label);
$tcY=$tcY-$label_height;
}
&Apache::lonxml::debug("hparam = $height_param wheight = $wheight texy = $tcY");
$tcX=sprintf('%.2f',$tcX);
$tcY=sprintf('%.2f',$tcY);
$result .= '\put('.$tcX.','.$tcY.'){';
if( $type eq 'text') {
$result.= $TeXsize.' \bf '.$label."}\n";
&add_vars($gname,$i,$label,$idx_arr[$i],$value,'',$safeeval);
} elsif ( $type eq 'image') {
my ($path,$file) = &Apache::londefdef::get_eps_image($label);
my $image_name = $path.$file;
#
# Note that spaces in e.. \includegraphics cause problems for Latex
# so they get replaced by _'s by lonprintout/printout and us:
#
my $label_width = &get_label_width($label);
$result .= '\includegraphics[width='.$label_width.'mm]{'
.$image_name."}}\n";
&add_vars($gname,$i,
$Apache::randomlabel::description[$idx_arr[$i]],
$idx_arr[$i],$value,$label,$safeeval);
} else {
&Apache::lonxml::error('Unknown type of label :'.$type.':');
}
}
$Apache::lonxml::debug =0;
} elsif ($target eq 'edit') {
$result.=&Apache::edit::end_table;
}
return $result;
}
# <location x="123" y="456" value="some value"/>
sub start_location {
$Apache::lonxml::debug = 0;
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $x= &check_int(&Apache::lonxml::get_param('x',$parstack,$safeeval),50);
my $y= &check_int(&Apache::lonxml::get_param('y',$parstack,$safeeval),50);
&Apache::lonxml::debug("x = $x y = $y");
$x = $x*$label_xscale;
$y = $y*$label_yscale;
&Apache::lonxml::debug(" H = $height_param W = $width_param");
&Apache::lonxml::debug(" XS = $label_xscale YS = $label_yscale");
&Apache::lonxml::debug(" X = $x Y = $y");
my $value= &Apache::lonxml::get_param('value',$parstack,$safeeval);
my $result='';
push(@Apache::randomlabel::xcoord,$x);
push(@Apache::randomlabel::ycoord,$y);
push(@Apache::randomlabel::value,$value);
if ($target eq 'edit') {
$result.=&Apache::edit::tag_start($target,$token);
$result.=&Apache::edit::text_arg('X:','x',$token,4).
&Apache::edit::text_arg('Y:','y',$token,4).
&Apache::edit::entercoords('x','y','attribute','width','height').' '.
&Apache::edit::text_arg('Value:','value',$token).
&Apache::edit::end_row();
$result.=&Apache::edit::end_table;
} elsif ($target eq 'modified') {
my $constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'x','y','value');
if ($constructtag) {
$result = &Apache::edit::rebuild_tag($token);
}
}
$Apache::lonxml::debug = 0;
return $result;
}
sub end_location {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my @result;
if ($target eq 'edit') { @result=('','no') }
return @result;
}
# <label>$var_abc</label>
sub insert_label {
my ($after) = @_;
my $depth = scalar(@Apache::lonxml::depthcounter);
$depth-- if ($after);
my $inset = "\t"x$depth;
return "\n$inset<label></label>";
}
sub start_label {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval,-2);
if ($target eq 'web' || $target eq 'tex' ||
$target eq 'grade' || $target eq 'answer' || $target eq 'analyze') {
&Apache::lonxml::startredirection;
} elsif ($target eq 'edit') {
$result.=&Apache::edit::tag_start($target,$token,"$type Label");
my $text=&Apache::lonxml::get_all_text("/label",$parser,$style);
if ($type eq 'image') {
$result.=&Apache::edit::end_row().
&Apache::edit::start_spanning_row();
$result.=&Apache::edit::text_arg('Description:','description',
$token);
}
if ($type eq 'text') { $result.="Label Text:"; }
if ($type eq 'image') { $result.="Path to image: "; }
$result.=&Apache::edit::editline('',$text,'',50).
&Apache::edit::end_table();
} elsif ($target eq 'modified') {
$result = '<label>';
if ($type eq 'image') {
my $constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,
'description');
if ($constructtag) {
$result = &Apache::edit::rebuild_tag($token);
} else {
$result = $token->[4];
}
}
$result.=&Apache::edit::modifiedfield("/label",$parser);
}
return $result;
}
sub end_label {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my @result;
if ($target eq 'edit') {
@result=('','no') ;
} elsif ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
$target eq 'answer' || $target eq 'analyze') {
my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval,-2);
my $ltext=&Apache::lonxml::endredirection;
if ($type eq 'image') {
if ($target eq 'tex') {
# For tex targets, our image url has been potentially corrupted
# by prepending \'s in front of special latex symbols.
# For now we only worry about the _ case (most common?)
# There's a whole host of theim in lonxml::latex_special_symbols
# that could potentially have to be re-done.
$ltext =~ s/\\_/_/g;
}
&Apache::lonxml::debug("Turning $ltext, $Apache::lonxml::pwd[-1]");
$ltext=&Apache::imageresponse::clean_up_image($ltext);
# $ltext=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],
# $ltext);
&Apache::lonxml::debug("into $ltext");
my $description = &Apache::lonxml::get_param('description',
$parstack,$safeeval);
push(@Apache::randomlabel::description,$description);
} else {
$ltext=~s/[\r\n]*//gs
}
push(@Apache::randomlabel::label_arr,$ltext);
}
return @result;
}
1;
__END__
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