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Diff for /loncom/xml/lonxml.pm between versions 1.62 and 1.76

version 1.62, 2001/03/26 17:32:14 version 1.76, 2001/05/15 20:50:03
Line 5 Line 5
 # 11/6 Gerd Kortemeyer  # 11/6 Gerd Kortemeyer
 # 6/1/1 Gerd Kortemeyer  # 6/1/1 Gerd Kortemeyer
 # 2/21,3/13 Guy  # 2/21,3/13 Guy
   # 3/29,5/4 Gerd Kortemeyer
   # 5/10 Scott Harrison
   
 package Apache::lonxml;   package Apache::lonxml; 
 use vars   use vars 
 qw(@pwd @outputstack $redirection $import @extlinks $metamode);  qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace);
 use strict;  use strict;
 use HTML::TokeParser;  use HTML::TokeParser;
 use Safe;  use Safe;
 use Safe::Hole;  use Safe::Hole;
 use Opcode;  use Opcode;
 use Apache::Constants qw(:common);  
   
 sub register {  sub register {
   my $space;    my $space;
Line 26  sub register { Line 27  sub register {
   }    }
 }  }
   
 sub printalltags {  use Apache::Constants qw(:common);
   my $temp;  
   foreach $temp (sort keys %Apache::lonxml::alltags) {  
     &Apache::lonxml::debug("$temp -- $Apache::lonxml::alltags{$temp}");  
   }  
 }  
 use Apache::style;  
 use Apache::lontexconvert;  use Apache::lontexconvert;
   use Apache::style;
 use Apache::run;  use Apache::run;
 use Apache::londefdef;  use Apache::londefdef;
 use Apache::scripttag;  use Apache::scripttag;
 use Apache::edit;  use Apache::edit;
 #==================================================   Main subroutine: xmlparse    #==================================================   Main subroutine: xmlparse  
   #debugging control, to turn on debugging modify the correct handler
   $Apache::lonxml::debug=0;
   
   #path to the directory containing the file currently being processed
 @pwd=();  @pwd=();
   
   #these two are used for capturing a subset of the output for later processing,
   #don't touch them directly use &startredirection and &endredirection
 @outputstack = ();  @outputstack = ();
 $redirection = 0;  $redirection = 0;
   
   #controls wheter the <import> tag actually does
 $import = 1;  $import = 1;
 @extlinks=();  @extlinks=();
   
   # meta mode is a bit weird only some output is to be turned off
   #<output> tag turns metamode off (defined in londefdef.pm)
 $metamode = 0;  $metamode = 0;
   
   # turns on and of run::evaluate actually derefencing var refs
   $evaluate = 1;
   
   # data structure for eidt mode, determines what tags can go into what other tags
   %insertlist=();
   
   #stores the list of active tag namespaces
   @namespace=();
   
   sub xmlbegin {
     my $output='';
     if ($ENV{'browser.mathml'}) {
         $output='<?xml version="1.0"?>'
               .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'
               .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
               .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>'
               .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" ' 
    .'xmlns="http://www.w3.org/TR/REC-html40">';
     } else {
         $output='<html>';
     }
     return $output;
   }
   
   sub xmlend {
       return '</html>';
   }
   
   sub fontsettings() {
       my $headerstring='';
       if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) { 
            $headerstring.=
                '<meta Content-Type="text/html; charset=x-mac-roman">';
       }
       return $headerstring;
   }
   
   sub registerurl {
     return (<<ENDSCRIPT);
   <script language="JavaScript">
   // BEGIN LON-CAPA Internal
       function LONCAPAreg() {
          if (window.location.pathname!="/res/adm/pages/menu.html") {
     menu=window.open("","LONCAPAmenu");
     menu.currentURL=window.location.pathname;
             menu.currentStale=0;
          }
       }
     
       function LONCAPAstale() {
          if (window.location.pathname!="/res/adm/pages/menu.html") {
     menu=window.open("","LONCAPAmenu");
             menu.currentStale=1;
          }
       }
   // END LON-CAPA Internal
   </script>
   ENDSCRIPT
   }
   
   sub loadevents() {
       return 'LONCAPAreg();';
   }
   
   sub unloadevents() {
       return 'LONCAPAstale();';
   }
   
   sub printalltags {
     my $temp;
     foreach $temp (sort keys %Apache::lonxml::alltags) {
       &Apache::lonxml::debug("$temp -- $Apache::lonxml::alltags{$temp}");
     }
   }
   
 sub xmlparse {  sub xmlparse {
   
  my ($target,$content_file_string,$safeinit,%style_for_target) = @_;   my ($target,$content_file_string,$safeinit,%style_for_target) = @_;
  if ($target eq 'meta') {   if ($target eq 'meta') {
    # meta mode is a bit weird only some output is to be turned off  
    #<output> tag turns metamode off (defined in londefdef.pm)  
    $Apache::lonxml::redirection = 0;     $Apache::lonxml::redirection = 0;
    $Apache::lonxml::metamode = 1;     $Apache::lonxml::metamode = 1;
      $Apache::lonxml::evaluate = 1;
    $Apache::lonxml::import = 0;     $Apache::lonxml::import = 0;
  } elsif ($target eq 'grade') {   } elsif ($target eq 'grade') {
    &startredirection;     &startredirection;
    $Apache::lonxml::metamode = 0;     $Apache::lonxml::metamode = 0;
      $Apache::lonxml::evaluate = 1;
    $Apache::lonxml::import = 1;     $Apache::lonxml::import = 1;
  } else {   } elsif ($target eq 'modified') {
      $Apache::lonxml::redirection = 0;
    $Apache::lonxml::metamode = 0;     $Apache::lonxml::metamode = 0;
      $Apache::lonxml::evaluate = 0;
      $Apache::lonxml::import = 0;
    } else {
    $Apache::lonxml::redirection = 0;     $Apache::lonxml::redirection = 0;
      $Apache::lonxml::metamode = 0;
      $Apache::lonxml::evaluate = 1;
    $Apache::lonxml::import = 1;     $Apache::lonxml::import = 1;
  }   }
  #&printalltags();   #&printalltags();
Line 170  sub xmlparse { Line 259  sub xmlparse {
 # if ($target eq 'meta') {  # if ($target eq 'meta') {
 #   $finaloutput.=&endredirection;  #   $finaloutput.=&endredirection;
 # }  # }
   
     if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
         $finaloutput=&afterburn($finaloutput);
     }
   
  return $finaloutput;   return $finaloutput;
 }  }
   
   
 sub recurse {  sub recurse {
       
   my @innerstack = ();     my @innerstack = (); 
Line 241  sub recurse { Line 336  sub recurse {
 sub callsub {  sub callsub {
   my ($sub,$target,$token,$parstack,$parser,$safeeval,$style)=@_;    my ($sub,$target,$token,$parstack,$parser,$safeeval,$style)=@_;
   my $currentstring='';    my $currentstring='';
     my $nodefault;
   {    {
     my $sub1;      my $sub1;
     no strict 'refs';      no strict 'refs';
Line 248  sub callsub { Line 344  sub callsub {
       $currentstring = &Apache::edit::tag_start($target,$token,$parstack,$parser,        $currentstring = &Apache::edit::tag_start($target,$token,$parstack,$parser,
  $safeeval,$style);   $safeeval,$style);
     }      }
     if (my $space=$Apache::lonxml::alltags{$token->[1]}) {      my $tag=$token->[1];
       &Apache::lonxml::debug("Calling sub $sub in $space $metamode<br />\n");      my $space=$Apache::lonxml::alltags{$tag};
       if (!$space) {
    $tag=~tr/A-Z/a-z/;
    $sub=~tr/A-Z/a-z/;
    $space=$Apache::lonxml::alltags{$tag}
       }
       if ($space) {
         #&Apache::lonxml::debug("Calling sub $sub in $space $metamode<br />\n");
       $sub1="$space\:\:$sub";        $sub1="$space\:\:$sub";
       $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);        $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
       $currentstring .= &$sub1($target,$token,$parstack,$parser,        ($currentstring,$nodefault) = &$sub1($target,$token,$parstack,$parser,
      $safeeval,$style);     $safeeval,$style);
     } else {      } else {
       &Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode<br />\n");        #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode<br />\n");
       if ($metamode <1) {        if ($metamode <1) {
  if (defined($token->[4]) && ($metamode < 1)) {   if (defined($token->[4]) && ($metamode < 1)) {
   $currentstring .= $token->[4];    $currentstring = $token->[4];
  } else {   } else {
   $currentstring .= $token->[2];    $currentstring = $token->[2];
  }   }
       }        }
     }      }
     if ($target eq 'edit' && $token->[0] eq 'E') {      &Apache::lonxml::debug("nodefalt:$nodefault:");
       $currentstring .= &Apache::edit::tag_end($target,$token,$parstack,$parser,      if ($currentstring eq '' && $nodefault eq '') {
  $safeeval,$style);        if ($target eq 'edit') {
    &Apache::lonxml::debug("doing default edit for $token->[1]");
    if ($token->[0] eq 'S') {
     $currentstring = &Apache::edit::tag_start($target,$token);
    } elsif ($token->[0] eq 'E') {
     $currentstring = &Apache::edit::tag_end($target,$token);
    }
         } elsif ($target eq 'modified') {
    if ($token->[0] eq 'S') {
     $currentstring = $token->[4];
     $currentstring.=&Apache::edit::handle_insert();
    } else {
     $currentstring = $token->[2];
    }
         }
     }      }
     use strict 'refs';      use strict 'refs';
   }    }
Line 280  sub startredirection { Line 397  sub startredirection {
   
 sub endredirection {  sub endredirection {
   if (!$Apache::lonxml::redirection) {    if (!$Apache::lonxml::redirection) {
     &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuggin information:".join ":",caller);      &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
     return '';      return '';
   }    }
   $Apache::lonxml::redirection--;    $Apache::lonxml::redirection--;
Line 407  sub writeallows { Line 524  sub writeallows {
     &Apache::lonnet::appenv(%httpref);      &Apache::lonnet::appenv(%httpref);
 }  }
   
   #
   # Afterburner handles anchors, highlights and links
   #
   sub afterburn {
       my $result=shift;
       map {
          my ($name, $value) = split(/=/,$_);
          $value =~ tr/+/ /;
          $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
          if (($name eq 'highlight')||($name eq 'anchor')||($name eq 'link')) {
              unless ($ENV{'form.'.$name}) {
                 $ENV{'form.'.$name}=$value;
      }
          }
       } (split(/&/,$ENV{'QUERY_STRING'}));
       if ($ENV{'form.highlight'}) {
           map {
              my $anchorname=$_;
      my $matchthis=$anchorname;
              $matchthis=~s/\_+/\\s\+/g;
              $result=~s/($matchthis)/\<font color=\"red\"\>$1\<\/font\>/gs;
          } split(/\,/,$ENV{'form.highlight'});
       }
       if ($ENV{'form.link'}) {
           map {
              my ($anchorname,$linkurl)=split(/\>/,$_);
      my $matchthis=$anchorname;
              $matchthis=~s/\_+/\\s\+/g;
              $result=~s/($matchthis)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
          } split(/\,/,$ENV{'form.link'});
       }
       if ($ENV{'form.anchor'}) {
           my $anchorname=$ENV{'form.anchor'};
    my $matchthis=$anchorname;
           $matchthis=~s/\_+/\\s\+/g;
           $result=~s/($matchthis)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
           $result.=(<<"ENDSCRIPT");
   <script>
       document.location.hash='$anchorname';
   </script>
   ENDSCRIPT
       }
       return $result;
   }
   
 sub handler {  sub handler {
   my $request=shift;    my $request=shift;
     
   my $target='web';    my $target='web';
   
   $Apache::lonxml::debug=0;    $Apache::lonxml::debug=0;
   
   if ($ENV{'browser.mathml'}) {    if ($ENV{'browser.mathml'}) {
     $request->content_type('text/xml');      $request->content_type('text/xml');
   } else {    } else {
     $request->content_type('text/html');      $request->content_type('text/html');
   }    }
     
 #  $request->print(<<ENDHEADER);  #  $request->print(<<ENDHEADER);
 #<html>  #<html>
 #<head>  #<head>
Line 427  sub handler { Line 591  sub handler {
 #ENDHEADER  #ENDHEADER
 #  &Apache::lonhomework::send_header($request);  #  &Apache::lonhomework::send_header($request);
   $request->send_http_header;    $request->send_http_header;
     
   return OK if $request->header_only;    return OK if $request->header_only;
   
   $request->print(&Apache::lontexconvert::header());  
   
   $request->print('<body bgcolor="#FFFFFF">'."\n");  
   
   my $file=&Apache::lonnet::filelocation("",$request->uri);    my $file=&Apache::lonnet::filelocation("",$request->uri);
   my %mystyle;    my %mystyle;
Line 444  sub handler { Line 605  sub handler {
   } else {    } else {
     $result = &Apache::lonxml::xmlparse($target,$filecontents,'',%mystyle);      $result = &Apache::lonxml::xmlparse($target,$filecontents,'',%mystyle);
   }    }
   $request->print($result);  
   
     $request->print($result);
   
   $request->print('</body>');  
   $request->print(&Apache::lontexconvert::footer());  
   writeallows($request->uri);    writeallows($request->uri);
   return OK;    return OK;
 }  }
     
 $Apache::lonxml::debug=0;  
 sub debug {  sub debug {
   if ($Apache::lonxml::debug eq 1) {    if ($Apache::lonxml::debug eq 1) {
     print "DEBUG:".$_[0]."<br />\n";      print "DEBUG:".$_[0]."<br />\n";
Line 461  sub debug { Line 619  sub debug {
 }  }
   
 sub error {  sub error {
   if ($Apache::lonxml::debug eq 1) {    if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
     print "<b>ERROR:</b>".$_[0]."<br />\n";      print "<b>ERROR:</b>".$_[0]."<br />\n";
   } else {    } else {
     print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />";      print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />";
Line 475  sub error { Line 633  sub error {
  &Apache::lonmsg::user_normal_msg($user,$domain,"Error in $ENV{'request.filename'}",$_[0]);   &Apache::lonmsg::user_normal_msg($user,$domain,"Error in $ENV{'request.filename'}",$_[0]);
       }        }
     }      }
       
     #FIXME probably shouldn't have me get everything forever.      #FIXME probably shouldn't have me get everything forever.
     &Apache::lonmsg::user_normal_msg('albertel','msu',"Error in $ENV{'request.filename'}",$_[0]);      &Apache::lonmsg::user_normal_msg('albertel','msu',"Error in $ENV{'request.filename'}",$_[0]);
     #&Apache::lonmsg::user_normal_msg('albertel','103',"Error in $ENV{'request.filename'}",$_[0]);         #&Apache::lonmsg::user_normal_msg('albertel','103',"Error in $ENV{'request.filename'}",$_[0]);
   }    }
 }  }
   
 sub warning {  sub warning {
   if ($Apache::lonxml::debug eq 1) {    if ($ENV{'request.state'} eq 'construct') {
     print "<b>W</b>ARNING<b>:</b>".$_[0]."<br />\n";      print "<b>W</b>ARNING<b>:</b>".$_[0]."<br />\n";
   }    }
 }  }
   
   sub register_insert {
     my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
     my $i;
     my $tagnum=0;
     my @order;
     for ($i=0;$i < $#data; $i++) {
       my $line = $data[$i];
       if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
       if ( $line =~ /TABLE/ ) { last; }
       my ($tag,$descrip,$function,$show) = split(/,/, $line);
       $insertlist{"$tagnum.tag"} = $tag;
       $insertlist{"$tagnum.description"} = $descrip;
       $insertlist{"$tagnum.function"} = $function;
       $insertlist{"$tagnum.show"}= $show;
       $tagnum++;
     }
     $i++; #skipping TABLE line
     $tagnum = 0;
     for (;$i < $#data;$i++) {
       my $line = $data[$i];
       my ($mnemonic,@which) = split(/ +/,$line);
       my $tag = $insertlist{"$tagnum.tag"};
       for (my $j=0;$j <$#which;$j++) {
         if ( $which[$j] eq 'Y' ) {
    if ($insertlist{"$j.show"} ne 'no') {
     push(@{ $insertlist{"$tag.which"} },$j);
    }
         }
       }
       $tagnum++;
     }
   }
 1;  1;
 __END__  __END__
   
   
Removed from v.1.62  
changed lines
  Added in v.1.76

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