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Up to [LON-CAPA] / loncom / xml

- uses new &newparser routine
- uses new lonnet routines &filelocation and &getfile
- new global $Apache::scripttag::SCRIPT_RESULT so the safe enviroment can
  report back results.

    1: # The LearningOnline Network with CAPA
    2: # <script> definiton
    3: 
    4: 
    5: package Apache::scripttag; 
    6: 
    7: use strict;
    8: use Apache::lonnet;
    9: 
   10: sub BEGIN {
   11:   &Apache::lonxml::register('Apache::scripttag',('script','scriptlib',
   12: 						 'parserlib','import'));
   13: }
   14: 
   15: $Apache::scripttag::SCRIPT_RESULT='';
   16: sub start_script {
   17:   my ($target,$token,$parstack,$parser,$safeeval)=@_;
   18:   my $args ='';
   19:   if ( $#$parstack > -1 ) {
   20:     $args=$$parstack[$#$parstack];
   21:   }
   22:   my $type = &Apache::run::run("{$args;".'return $type}',$safeeval);
   23:   #&Apache::lonxml::debug("found type of $type");
   24:   $Apache::scripttag::SCRIPT_RESULT='';
   25:   if ($type eq "loncapa/perl") {
   26:     $safeeval->share('$SCRIPT_RESULT');
   27:     my $bodytext=&Apache::lonxml::get_all_text("script",$$parser[$#$parser]);
   28:     
   29:     if ( $target eq "modified" ) {
   30:     }
   31:     &Apache::run::run($bodytext,$safeeval);
   32:     
   33:     if ($target eq "edit" ) {
   34:       $Apache::scripttag::SCRIPT_RESULT = 
   35: 	"<br> &lt;$token->[1]&gt; output: <br>$bodytext<br>Source:<br>";
   36:       $Apache::scripttag::SCRIPT_RESULT.=&editfield($token->[1],$bodytext);
   37:     }
   38:   } else {
   39:     $Apache::scripttag::SCRIPT_RESULT = $token->[4];
   40:   }
   41:   return $Apache::scripttag::SCRIPT_RESULT;
   42: }
   43: 
   44: sub end_script {
   45:   my ($target,$token,$parstack,$parser,$safeeval)=@_;
   46:   return $token->[2]; 
   47: }
   48: 
   49: sub start_scriptlib {
   50:   my ($target,$token,$parstack,$parser,$safeeval)=@_;
   51:   my $bodytext=$$parser[$#$parser]->get_text("/scriptlib");
   52:   my $result ="";
   53: 
   54:   $bodytext=&Apache::run::evaluate($bodytext,$safeeval,
   55: 				   $$parstack[$#$parstack]);
   56:   my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],
   57: 					     $bodytext);
   58:   my $script=&Apache::lonnet::getfile($location);
   59:   if ($script == -1) {
   60:     &Apache::lonxml::error("<b> Unable to find <i>$location</i> for scriptlib</b>");
   61:     return "";
   62:   }
   63:   &Apache::run::run($script,$safeeval);
   64:   #&Apache::lonxml::debug("ran $bodytext:<br>".&Apache::lonnet::getfile($bodytext)."<br>");
   65: 
   66:   if ($target eq "edit" ) {
   67:     $result.=&editfield($token->[1],$bodytext);
   68:   }
   69:   return $result;
   70: }
   71: 
   72: sub end_scriptlib {}
   73: 
   74: sub start_parserlib {
   75:   my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
   76:   my $bodytext=$$parser[$#$parser]->get_text("/parserlib");
   77:   my $result ="";
   78: 
   79:   $bodytext=&Apache::run::evaluate($bodytext,$safeeval,
   80: 				  $$parstack[$#$parstack]);
   81:   my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],
   82: 					     $bodytext);
   83:   my $styletext=&Apache::lonnet::getfile($location);
   84:   if ($styletext == -1) {
   85:     &Apache::lonxml::error("<b> Unable to find <i>$location</i> for parserlib</b>");
   86:     return "";
   87:   }
   88:   %$style = ( %$style , &Apache::style::styleparser($target,$styletext));
   89: 
   90:   if ($target eq "edit" ) {
   91:     $result=&editfield($token->[1],$bodytext);
   92:   }
   93:   return $result;
   94: }
   95: 
   96: sub end_parserlib {
   97: }
   98: 
   99: sub start_import {
  100:   my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;
  101:   my $bodytext=$$parser[$#$parser]->get_text("/import");
  102:   my $result ="";
  103: 
  104:   $bodytext=Apache::run::evaluate($bodytext,$safeeval,$$parstack[$#$parstack]);
  105:   my $location=&Apache::lonnet::filelocation($Apache::lonxml::pwd['-1'],$bodytext);
  106:   my $file=&Apache::lonnet::getfile($location);
  107:   if ($file == -1) {
  108:     &Apache::lonxml::error("<b> Unable to find <i>$bodytext $location</i> for import</b>");
  109:     return "";
  110:   }
  111: 
  112:   my $dir=$location;
  113:   $dir=~s:/[^/]*$::;
  114:   &Apache::lonxml::newparser($parser,\$file,$dir);
  115: 
  116:   if ($target eq "edit" ) {
  117:     $result.=&editfield($token->[1],$bodytext);
  118:     $result.="Click<a href=\"/res/$bodytext\">here</a> to edit<br></br>"
  119:   }
  120: }
  121: 
  122: sub end_import {
  123: }
  124: 
  125: sub editfield {
  126:   my ($tag,$data)=@_;
  127:   
  128:   my $count=0;
  129:   my $maxlength=-1;
  130:   map { $count++;
  131: 	if (length($_) > $maxlength) { $maxlength = length ($_); }
  132:       } split ("\n", $data);
  133: 	  
  134:   return "<br></br>\n&lt;$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;/$tag&gt;<br></br>\n";
  135: }
  136: 
  137: sub getfilenothere {
  138:   my ($filename) = @_;
  139:   my $a="";
  140:   
  141:   $filename=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
  142:   $filename="/home/httpd/html/res".$filename;
  143:   if (! -e $filename ) {
  144:     &Apache::lonnet::subscribe($filename);
  145:     &Apache::lonnet::repcopy($filename);
  146:   }
  147:   if (! -e $filename ) { return -1; };
  148:   my $fh=Apache::File->new($filename);
  149:   while (<$fh>) {
  150:       $a .=$_;
  151:   }
  152:   return $a
  153: }
  154: 
  155: 1;
  156: __END__