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Diff for /loncom/xml/lonxml.pm between versions 1.352 and 1.368

version 1.352, 2005/01/28 09:49:52 version 1.368, 2005/03/31 15:55:47
Line 149  $Apache::lonxml::post_evaluate=1; Line 149  $Apache::lonxml::post_evaluate=1;
 $Apache::lonxml::warnings_error_header='';  $Apache::lonxml::warnings_error_header='';
   
 sub xmlbegin {  sub xmlbegin {
   my $output='';      my ($style)=@_;
   @htmlareafields=();      my $output='';
   if ($ENV{'browser.mathml'}) {      @htmlareafields=();
       $output='<?xml version="1.0"?>'      if ($ENV{'browser.mathml'}) {
             .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'   $output='<?xml version="1.0"?>'
             .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '              #.'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'."\n"
             .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>'  #            .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
               
   #    .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" [<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">] >'
       .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">'
             .'<html xmlns:math="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">';      .'xmlns="http://www.w3.org/1999/xhtml">';
   } else {      } else {
       $output='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">   $output='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html>';
 <html>';      }
   }      if ($style eq 'encode') {
   return $output;   $output=&HTML::Entities::encode($output,'<>&"');
       }
       return $output;
 }  }
   
 sub xmlend {  sub xmlend {
     my ($target,$parser)=@_;      my ($target,$parser)=@_;
     my $mode='xml';      my $mode='xml';
     my $status='OPEN';      my $status='OPEN';
     if ($Apache::lonhomework::parsing_a_problem) {      if ($Apache::lonhomework::parsing_a_problem ||
    $Apache::lonhomework::parsing_a_task ) {
  $mode='problem';   $mode='problem';
  $status=$Apache::inputtags::status[-1];    $status=$Apache::inputtags::status[-1]; 
     }      }
     my $discussion=&Apache::lonfeedback::list_discussion($mode,$status);          my $discussion;
       &Apache::loncommon::get_unprocessed_cgi
           ($ENV{'query_string'},['LONCAPA_INTERNAL_no_discussion']);
       if (! exists($ENV{'form.LONCAPA_INTERNAL_no_discussion'}) ||
           $ENV{'form.LONCAPA_INTERNAL_no_discussion'} ne 'true') {
           $discussion=&Apache::lonfeedback::list_discussion($mode,$status);
       }
     if ($target eq 'tex') {      if ($target eq 'tex') {
  $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';   $discussion.='<tex>\keephidden{ENDOFPROBLEM}\vskip 0.5mm\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\end{document}</tex>';
  &Apache::lonxml::newparser($parser,\$discussion,'');   &Apache::lonxml::newparser($parser,\$discussion,'');
  return '';   return '';
     } else {      } else {
  return $discussion.'</html>';   return $discussion.&Apache::loncommon::endbodytag();
     }      }
 }  }
   
Line 284  sub printtokenheader { Line 296  sub printtokenheader {
     }      }
 }  }
   
 sub fontsettings() {  sub fontsettings {
     my $headerstring='';      my $headerstring='';
     if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) {       if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) { 
  $headerstring.=   $headerstring.=
Line 353  sub xmlparse { Line 365  sub xmlparse {
   
  my @stack = ();   my @stack = ();
  my @parstack = ();   my @parstack = ();
  &initdepth;   &initdepth();
    &init_alarm();
  my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,   my $finaloutput = &inner_xmlparse($target,\@stack,\@parstack,\@pars,
    $safeeval,\%style_for_target);     $safeeval,\%style_for_target);
   
Line 363  sub xmlparse { Line 375  sub xmlparse {
  }   }
  &do_registered_ssi();   &do_registered_ssi();
  if ($Apache::lonxml::counter_changed) { &store_counter() }   if ($Apache::lonxml::counter_changed) { &store_counter() }
    if ($ENV{'form.return_only_error_and_warning_counts'}) {
        return "$errorcount:$warningcount";
    }
  return $finaloutput;   return $finaloutput;
 }  }
   
 sub htmlclean {  sub htmlclean {
     my ($raw,$full)=@_;      my ($raw,$full)=@_;
   # Take care of CRLF etc
   
     my $tree = HTML::TreeBuilder->new;      $raw=~s/\r\f/\n/gs; $raw=~s/\f\r/\n/gs;
     $tree->ignore_unknown(0);      $raw=~s/\r\n/\n/gs; $raw=~s/\n\r/\n/gs;
       $raw=~s/\f/\n/gs; $raw=~s/\r/\n/gs;
     $tree->parse($raw);      $raw=~s/\&\#10\;/\n/gs; $raw=~s/\&\#13\;/\n/gs;
   
     my $output= $tree->as_HTML(undef,' ');  # Generate empty tags, remove wrong end tags
       $raw=~s/\<(br|hr|img|meta|allow|basefont)([^\>\/]*?)\>/\<$1$2 \/\>/gis;
     $output=~s/\<(br|hr|img|meta|allow)(.*?)\>/\<$1$2 \/\>/gis;      $raw=~s/\<\/(br|hr|img|meta|allow|basefont)\>//gis;
     $output=~s/\<\/(br|hr|img|meta|allow)\>//gis;  
     unless ($full) {      unless ($full) {
        $output=~s/\<[\/]*(body|head|html)\>//gis;         $raw=~s/\<[\/]*(body|head|html)\>//gis;
     }      }
   # Make standard tags lowercase
     $tree = $tree->delete;      foreach ('html','body','head','meta','h1','h2','h3','h4','b','i','m',
                'table','tr','td','th','p','br','hr','img','embed','font',
     return $output;               'a','strong','center','title','basefont','li','ol','ul',
                'input','select','form','option','script','pre') {
    $raw=~s/\<$_\s*\>/\<$_\>/gis;
           $raw=~s/\<\/$_\s*\>/<\/$_\>/gis;
           $raw=~s/\<$_\s([^\>]*)\>/<$_ $1\>/gis;
       }
       return $raw;
 }  }
   
 sub latex_special_symbols {  sub latex_special_symbols {
Line 399  sub latex_special_symbols { Line 420  sub latex_special_symbols {
         $string=~s/([^\\])\#/$1\\\#/g;          $string=~s/([^\\])\#/$1\\\#/g;
     } else {      } else {
  $string=~s/\\/\\ensuremath{\\backslash}/g;   $string=~s/\\/\\ensuremath{\\backslash}/g;
  $string=~s/([^\\]|^)\%/$1\\\%/g;   $string=~s/\\\%|\%/\\\%/g;
  $string=~s/([^\\]|^)\$/$1\\\$/g;   $string=~s/\\{|{/\\{/g;
  $string=~s/([^\\])\_/$1\\_/g;   $string=~s/\\}|}/\\}/g;
  $string=~s/\$\$/\$\\\$/g;   $string=~s/\\\$|\$/\\\$/g;
  $string=~s/\_\_/\_\\\_/g;   $string=~s/\\\_|\_/\\\_/g;
  $string=~s/\#\#/\#\\\#/g;  
         $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;          $string=~s/([^\\]|^)(\~|\^)/$1\\$2\\strut /g;
  $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less   $string=~s/(>|<)/\\ensuremath\{$1\}/g; #more or less
  $string=&Apache::lonprintout::character_chart($string);   $string=&Apache::lonprintout::character_chart($string);
  # any & or # leftover should be safe to just escape   # any & or # leftover should be safe to just escape
         $string=~s/([^\\]|^)\&/$1\\\&/g;   $string=~s/\\\&|\&/\\\&/g;
         $string=~s/([^\\]|^)\#/$1\\\#/g;   $string=~s/\\\#|\#/\\\#/g;
         $string=~s/\|/\$\\mid\$/g;          $string=~s/\|/\$\\mid\$/g;
 #single { or } How to escape?  #single { or } How to escape?
     }      }
Line 781  sub default_homework_load { Line 801  sub default_homework_load {
     }      }
 }  }
   
   {
       my $alarm_depth;
       sub init_alarm {
    alarm(0);
    $alarm_depth=0;
       }
   
       sub start_alarm {
    if ($alarm_depth<1) {
       my $old=alarm($Apache::lonnet::perlvar{'lonScriptTimeout'});
       if ($old) {
    &Apache::lonxml::error("Cancelled an alarm of $old, this shouldn't occur.");
       }
    }
    $alarm_depth++;
       }
   
       sub end_alarm {
    $alarm_depth--;
    if ($alarm_depth<1) { alarm(0); }
       }
   }
 my $metamode_was;  my $metamode_was;
 sub startredirection {  sub startredirection {
     if (!$Apache::lonxml::redirection) {      if (!$Apache::lonxml::redirection) {
Line 1014  sub get_all_text { Line 1056  sub get_all_text {
 sub newparser {  sub newparser {
   my ($parser,$contentref,$dir) = @_;    my ($parser,$contentref,$dir) = @_;
   push (@$parser,HTML::LCParser->new($contentref));    push (@$parser,HTML::LCParser->new($contentref));
   $$parser['-1']->xml_mode('1');    $$parser[-1]->xml_mode(1);
     $$parser[-1]->marked_sections(1);
   if ( $dir eq '' ) {    if ( $dir eq '' ) {
     push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);      push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
   } else {    } else {
Line 1209  $initialize Line 1252  $initialize
 $xml_help  $xml_help
 <input type="hidden" name="editmode" value="$lt{'ed'}" />  <input type="hidden" name="editmode" value="$lt{'ed'}" />
 $buttons<br />  $buttons<br />
 <textarea cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>  <textarea style="width:100%" cols="80" rows="44" name="filecont" id="filecont">$filecontents</textarea>
 <br />$buttons  <br />$buttons
 <br />  <br />
 </form>  </form>
Line 1255  sub handler { Line 1298  sub handler {
           
     $Apache::lonxml::debug=$ENV{'user.debug'};      $Apache::lonxml::debug=$ENV{'user.debug'};
           
     if ($ENV{'browser.mathml'}) {      &Apache::loncommon::content_type($request,'text/html');
  &Apache::loncommon::content_type($request,'text/xml');  
     } else {  
  &Apache::loncommon::content_type($request,'text/html');  
     }  
     &Apache::loncommon::no_cache($request);      &Apache::loncommon::no_cache($request);
     $request->set_last_modified(&Apache::lonnet::metadata($request->uri,      if ($ENV{'request.state'} eq 'published') {
   'lastrevisiondate');   $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
         'lastrevisiondate'));
       }
     $request->send_http_header;      $request->send_http_header;
           
     return OK if $request->header_only;      return OK if $request->header_only;
Line 1330  ENDNOTFOUND Line 1371  ENDNOTFOUND
  if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) {   if (!$ENV{'form.editmode'} || $ENV{'form.viewmode'}) {
     $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,      $result = &Apache::lonxml::xmlparse($request,$target,$filecontents,
  '',%mystyle);   '',%mystyle);
       undef($Apache::lonhomework::parsing_a_task);
  }   }
     }      }
           
Removed from v.1.352  
changed lines
  Added in v.1.368

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