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</script> works correctly now, emitting </script> when needed and not when not

# The LearningOnline Network with CAPA
# <script> definiton


package Apache::scripttag; 

use strict;
use Apache::lonnet;

sub BEGIN {
  &Apache::lonxml::register('Apache::scripttag',('script','scriptlib',
						 'parserlib','import',
                                                 'footnote','display'));
}

sub start_script {
  my ($target,$token,$parstack,$parser,$safeeval)=@_;
  my $args ='';
  if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
  my $type = &Apache::run::run("{$args;".'return $type}',$safeeval);
  my $result='';
  #&Apache::lonxml::debug("found type of $type");
  if ($type eq "loncapa/perl") {
    my $bodytext=&Apache::lonxml::get_all_text("/script",$$parser[$#$parser]);
    
    if ( $target eq "modified" ) {
      
    } elsif ( $target eq "web" || $target eq "grade" ) {
      &Apache::run::run($bodytext,$safeeval);
    } elsif ($target eq "edit" ) {
      &Apache::run::run($bodytext,$safeeval);
      $result="<br> &lt;$token->[1]&gt; output: <br>$bodytext<br>Source:<br>";
      $result.=&editfield($token->[1],$bodytext);
    }
  } else {
    if ($target ne "meta") { $result = $token->[4]; }
  }
  return $result;
}

sub end_script {
  my ($target,$token,$parstack,$parser,$safeeval)=@_;
  if ( $target eq "meta" ) { return ''; } 
  my $args ='';
  if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
  my $type = &Apache::run::run("{$args;".'return $type}',$safeeval);
  my $result='';
  #other script blocks need to survive
  if ($type ne "loncapa/perl") { return $token->[2]; }
  return '';
}

sub start_display {
  my ($target,$token,$parstack,$parser,$safeeval)=@_;
  my $args ='';
  if ( $#$parstack > -1 ) {
    $args=$$parstack[$#$parstack];
  }
  my $bodytext=&Apache::lonxml::get_all_text("/display",$$parser[$#$parser]);
  
  if ( $target eq "modified" ) {
  }
  my $result=&Apache::run::run($bodytext,$safeeval);
  if ($target eq 'grade' ) {
    # grade should produce no output
    $result='';
  }
  if ($target eq "edit" ) {
    $result = 
      "<br> &lt;$token->[1]&gt; output: <br>$bodytext<br>Source:<br>";
    $result.=&editfield($token->[1],$bodytext);
  }
  return $result;
}

sub end_display {
}

sub start_scriptlib {
  my ($target,$token,$parstack,$parser,$safeeval)=@_;
  my $bodytext=$$parser[$#$parser]->get_text("/scriptlib");
  my $result ="";

  $bodytext=&Apache::run::evaluate($bodytext,$safeeval,
				   $$parstack[$#$parstack]);
  my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],
					     $bodytext);
  my $script=&Apache::lonnet::getfile($location);
  if ($script == -1) {
    &Apache::lonxml::error("<b> Unable to find <i>$location</i> for scriptlib</b>");
    return "";
  }
  &Apache::run::run($script,$safeeval);
  #&Apache::lonxml::debug("ran $bodytext:<br>".&Apache::lonnet::getfile($bodytext)."<br>");

  if ($target eq "edit" ) {
    $result.=&editfield($token->[1],$bodytext);
  }
  return $result;
}

sub end_scriptlib {}

sub start_parserlib {
  my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
  my $bodytext=$$parser[$#$parser]->get_text("/parserlib");
  my $result ="";

  $bodytext=&Apache::run::evaluate($bodytext,$safeeval,
				  $$parstack[$#$parstack]);
  my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],
					     $bodytext);
  my $styletext=&Apache::lonnet::getfile($location);
  #&Apache::lonxml::debug("found :$bodytext: in :$location: with :$styletext:");
  if ($styletext == -1) {
    &Apache::lonxml::error("<b> Unable to find <i>$location</i> for parserlib</b>");
    return "";
  }
  %$style = ( %$style , &Apache::style::styleparser($target,$styletext));

  if ($target eq "edit" ) {
    $result=&editfield($token->[1],$bodytext);
  }
  return $result;
}

sub end_parserlib {
}

sub start_footnote {
  my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
  my $result = '';
  $Apache::lonxml::redirection = 0;
  return $result;  
}

sub end_footnote {
  my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
  $Apache::lonxml::outputstack =~ s/\"/\&quot\;/g;
  my $result = "<a href=\"javascript:newWindow=open(\'\',\'new_W\',\'width=500,height=200\');newWindow.document.open(\'text/html\',\'replace\');newWindow.document.writeln(\'<html><head><title>newwindow</title></head><body bgcolor=&quot;#FFFFFF&quot;> $Apache::lonxml::outputstack </body></html>\');newWindow.document.close();void(0);\"><sup>*</sup></a>";
   $Apache::lonxml::outputstack = "";
   $Apache::lonxml::redirection = 1;
  return $result; 
}

sub start_import {
  my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
  my $bodytext=$$parser[$#$parser]->get_text("/import");
  my $result ="";

  $bodytext=Apache::run::evaluate($bodytext,$safeeval,$$parstack[$#$parstack]);
  my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],$bodytext);
  my $file=&Apache::lonnet::getfile($location);
  if ($file == -1) {
    &Apache::lonxml::error("<b> Unable to find <i>$bodytext $location</i> for import</b>");
    return "";
  }

  my $dir=$location;
  $dir=~s:/[^/]*$::;
  &Apache::lonxml::newparser($parser,\$file,$dir);

  if ($target eq "edit" ) {
    $result.=&editfield($token->[1],$bodytext);
    $result.="Click<a href=\"/res/$bodytext\">here</a> to edit<br></br>"
  }
  return '';
}

sub end_import {
}

sub editfield {
  my ($tag,$data)=@_;
  
  my $count=0;
  my $maxlength=-1;
  map { $count++;
	if (length($_) > $maxlength) { $maxlength = length ($_); }
      } split ("\n", $data);
	  
  return "<br></br>\n&lt;$tag&gt;<br></br>\n&nbsp;&nbsp;&nbsp;<textarea rows=\"$count\" cols=\"$maxlength\" name=homework_edit_".$Apache::lonxml::curdepth.">$data</textarea><br></br>\n&lt;/$tag&gt;<br></br>\n";
}

sub getfilenothere {
  my ($filename) = @_;
  my $a="";
  
  $filename=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
  $filename="/home/httpd/html/res".$filename;
  if (! -e $filename ) {
    &Apache::lonnet::subscribe($filename);
    &Apache::lonnet::repcopy($filename);
  }
  if (! -e $filename ) { return -1; };
  my $fh=Apache::File->new($filename);
  while (<$fh>) {
      $a .=$_;
  }
  return $a
}

1;
__END__