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Diff for /loncom/interface/lonhelp.pm between versions 1.21 and 1.39

version 1.21, 2006/03/15 23:41:49 version 1.39, 2008/07/08 01:08:57
Line 1 Line 1
 # The LearningOnline Network with CAPA  # The LearningOnline Network with CAPA
   #
   # $Id$
   #
 # .tex help system web server handler  # .tex help system web server handler
 #  #
 # Copyright Michigan State University Board of Trustees  # Copyright Michigan State University Board of Trustees
Line 24 Line 27
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  #
 # .tex file help handler  # .tex file help handler
 # YEAR=2002  
 # 7/4 Jeremy Bowers  
   
 package Apache::lonhelp;  package Apache::lonhelp;
   
Line 40  use Apache::lonlocal; Line 42  use Apache::lonlocal;
 use Apache::lonnet;  use Apache::lonnet;
 use tth();  use tth();
 use GDBM_File();  use GDBM_File();
   use lib '/home/httpd/lib/perl/';
   use LONCAPA;
    
   
 # This sub takes the name of a label in, and converts it to something  # This sub takes the name of a label in, and converts it to something
 # that is a valid anchor name.  # that is a valid anchor name.
Line 53  sub processLabelName { Line 58  sub processLabelName {
 # Serve out the text  # Serve out the text
 sub servetext {  sub servetext {
     my ($r,$text) = @_;      my ($r,$text) = @_;
     my $html=&Apache::lonxml::xmlbegin();      my $bugs=&Apache::loncommon::help_open_bug('Documentation',&mt('Report a documentation bug'));
     my $htmlend=&Apache::lonxml::xmlend();      my $morehelp;#=&Apache::loncommon::help_open_menu(undef,undef,1,undef,undef,undef,undef,'Help and Assistance Menu');
     my $bugs=&Apache::loncommon::help_open_bug('Documentation');  
     my $header=&mt('LON-CAPA Help');      my $header=&mt('LON-CAPA Help');
     $r->print(<<HEADER);      $r->print(<<HEADER);
 $html      <h3 style="font: sans-serif"><img align="right" alt="help logo"
     <head>      src="/adm/help/gif/lonhelpheader.gif"/>$header</h3><hr />
         <title>LON-CAPA Help</title>  
     </head>  
     <body bgcolor="#FFFFFF">  
     <h3 style="font: sans-serif"><img align="right"  
     src="/adm/help/gif/lonhelpheader.gif"/>$header<hr />$bugs</h3>  
     <!-- BEGIN -->      <!-- BEGIN -->
 HEADER  HEADER
   
Line 72  HEADER Line 71  HEADER
   
     if (&Apache::lonnavmaps::advancedUser()) {      if (&Apache::lonnavmaps::advancedUser()) {
  my $search=&mt('Search LON-CAPA help');   my $search=&mt('Search LON-CAPA help');
  my $about=&mt('About LON-CAPA help and More Help');          my $query=&mt('Search');
    my $uri = $r->uri;
  $r->print(<<FOOTER);   $r->print(<<FOOTER);
     <!-- END -->      <hr /><form action="$uri" method="post">
     <hr /><form method="post">  <label>$search: <input type="text" name="searchterm" size="40" /></label><input type="submit" value="$query" />
 $search: <input type="text" name="searchterm" size="40" /><br />  </form>
 <a href="/adm/help/abouthelp.html">$about</a>  <br />
     </body>  $bugs
 $htmlend  $morehelp
 FOOTER  FOOTER
    
     }      }
   
     $r->print(<<ENDBODY);      $r->print(<<ENDBODY);
     <!-- END -->      <!-- END -->
     </body>  
 $htmlend  
 ENDBODY  ENDBODY
   
 }  }
   
 # Render takes a tex fragment, transforms it for TtH, and returns the  # Render takes a tex fragment, transforms it for TtH, and returns the
 # HTML equivalent  # HTML equivalent
 sub render {  sub render {
     my ($tex, $docroot, $serverroot) = @_;      my ($tex, $docroot) = @_;
     tie (my %fragmentLabels, 'GDBM_File', $docroot . '/adm/help/fragmentLabels.gdbm', 0, 0);      tie (my %fragmentLabels, 'GDBM_File', $docroot . '/adm/help/fragmentLabels.gdbm', 0, 0);
   
     # This tells TtH what to do with captions, labels, and other      # This tells TtH what to do with captions, labels, and other
Line 104  sub render { Line 105  sub render {
     # absolute paths for use with help.loncapa.org      # absolute paths for use with help.loncapa.org
     $tex =~ s|  \\ref\{([^}]*)\}      $tex =~ s|  \\ref\{([^}]*)\}
              |               |
               if (not(exists($fragmentLabels{$1}))) {                my $label=$1;
           &Apache::lonnet::logthis("ERROR: $1 not a valid help label");                if ($1!~/\.hlp$/) {
               };                    if ((!exists($fragmentLabels{$1})) && ($1!~/\.hlp$/)) {
              '\\begin{html}<a href="http://' . $serverroot ."/adm/help/".               &Apache::lonnet::logthis("ERROR: $1 not a valid help label");
               substr($fragmentLabels{$1}, 0, -4) .                       $label='Error';
                     } else {
                        $label=substr($fragmentLabels{$1}, 0, -4);
     }
         } else {
     $label=~s/\.hlp$//;
         }
                '\\begin{html}<a href="/adm/help/'.
                 $label .
               '.hlp#' . &processLabelName($1) .                 '.hlp#' . &processLabelName($1) . 
              '"><img src="http://' . $serverroot . '/adm/help/gif/smallHelp.gif" border="0" /></a>' .               '"><img src="/adm/help/help.png" border="0" /></a>' .
              '\\end{html}'               '\\end{html}'
              |gxe;               |gxe;
   
Line 119  sub render { Line 128  sub render {
   
     # Figures leftover without captions      # Figures leftover without captions
     $tex =~ s|  \\includegraphics(\[[^]]*\])*\{([^}]*)\}      $tex =~ s|  \\includegraphics(\[[^]]*\])*\{([^}]*)\}
              |  '\\begin{html}<img src="http://' . $serverroot . '/adm/help/gif/' . $2 . '.gif" border="2"'.               |  '\\begin{html}<img src="/adm/help/gif/' . $2 . '.gif" border="2"'.
                 ' bordercolor="#000000"/>\\end{html}'                  ' bordercolor="#000000"/>\\end{html}'
              |gxe;               |gxe;
   
Line 136  sub render { Line 145  sub render {
     # just duck the issue...      # just duck the issue...
   
     $tex =~ s/Figure 0://g;      $tex =~ s/Figure 0://g;
      $tex.=$Apache::lontexconvert::errorstring;      $tex.=$Apache::lontexconvert::errorstring;
     untie %fragmentLabels;      untie %fragmentLabels;
   
     return $tex;      return $tex;
 }  }
   
   sub listmatches {
       my ($docroot,$term,$subdir) =@_;
       unless ($subdir) { $subdir=''; }
       my $output='';
       opendir(DIR,$docroot.'/adm/help/tex/'.$subdir);
       foreach my $filename (sort readdir(DIR)) {
    if ($filename=~/\.tex$/) {
       open(FH,$docroot.'/adm/help/tex/'.$subdir.$filename);
       my $quote='';
       while (my $line=<FH>) {
    if ($line=~/\Q$term\E/i) {
       $line=~s/\\\w+//gs;
       $line=~s/\{//gs;
       $line=~s/\}//gs;
       $line=~s/\\/ /gs;
                       $line=~s/\</\&lt\;/gs;
                       $line=~s/\>/\&gt\;/gs;
       $line=~s/(\Q$term\E)/\<b\>$1\<\/b\>/gsi;
       $quote.='<br />...'.$line.'...';
    }
       }
       close(FH);
       if ($quote) {
    my $title=$filename;
                   $title=~s/\_/ /gs;
                   $title=~s/\.tex$//;
                   $filename=~s/\.tex$/\.hlp/;
    $output.='<li><a href="/adm/help/tex/'.$subdir.$filename.'">'.$title.'</a>'.$quote.'</li>';
       }
    }
       }
       closedir(DIR);
       return (($output?'<ul>'.$output.'</ul>':&mt('"[_1]" not found',$term)),$output);
   }
   
 sub handler {  sub handler {
      my $r = shift;       my $r = shift;
   
      my $docroot = $r->dir_config('lonDocRoot');       my $docroot = $r->dir_config('lonDocRoot');
      my $serverroot = $ENV{'HTTP_HOST'};  
   
      &Apache::lonlocal::get_language_handle($r);       &Apache::lonlocal::get_language_handle($r);
        &Apache::loncommon::content_type($r,"text/html");
        my $start_page=
    &Apache::loncommon::start_page('LON-CAPA Help',undef,
    {'only_body' => 1,});
      my $text='';       my $text='';
      if ($env{'form.searchterm'}=~/\w/) {       if ($env{'form.searchterm'}=~/\w/) {
    ($text,my $matches)=&listmatches($docroot,$env{'form.searchterm'},&Apache::lonlocal::current_language().'/');
            if ($matches) {
                my ($englishresult,$englishmatches)=&listmatches($docroot,$env{'form.searchterm'});
                if ($englishmatches) {
                   $text.='<hr />'.$englishresult;
                }
            } else {
                $text=&listmatches($docroot,$env{'form.searchterm'}); 
            }
      } else {       } else {
         my $filenames = &Apache::lonnet::unescape(substr ($ENV{'REQUEST_URI'} ,    my $filenames = &unescape(substr($ENV{'REQUEST_URI'} , 
     rindex($ENV{'REQUEST_URI'}, '/') + 1, -4));    rindex($ENV{'REQUEST_URI'}, '/') + 1, -4));
     
         # Security check on the file; the whole filename must consist   # Security check on the file; the whole filename must consist
         # of nothing but alphanums, ' ,, or ., or the file   # of nothing but alphanums, ' ,, or ., or the file
         # will be "not found", no matter what.   # will be "not found", no matter what.
          
         return HTTP_NOT_FOUND if ($filenames !~ /\A[-0-9a-zA-z_'',:.]+\Z/);   return HTTP_NOT_FOUND if ($filenames !~ /\A[-0-9a-zA-z_'',:.]+\Z/);
     
         # Join together the tex files, return HTTP_NOT_FOUND if any of   # Join together the tex files, return HTTP_NOT_FOUND if any of
         # them are not found   # them are not found
         my $tex = '';   my $tex = '';
         # Since in insertlist.tab I want to specify multiple files,   # Since in insertlist.tab I want to specify multiple files,
         # and insertlist.tab also uses commas, I need something else   # and insertlist.tab also uses commas, I need something else
         # so replace : with ,   # so replace : with ,
         $filenames =~ s/:/,/g;   $filenames =~ s/:/,/g;
         my @files = split(/,/, $filenames);   my @files = split(/,/, $filenames);
          
         for my $filename (@files) {   for my $filename (@files) {
     if (-e $docroot.'/adm/help/tex/'.       if (-e $docroot.'/adm/help/tex/'.
         &Apache::lonlocal::current_language().'/'.   &Apache::lonlocal::current_language().'/'.
         $filename.'.tex') {   $filename.'.tex') {
         $filename=&Apache::lonlocal::current_language().'/'.$filename;   $filename=&Apache::lonlocal::current_language().'/'.$filename;
     }       }
     (my $file = Apache::File->new($docroot       (my $file = Apache::File->new($docroot
      . '/adm/help/tex/'.$filename.'.tex'))     . '/adm/help/tex/'.$filename.'.tex'))
          or return HTTP_NOT_FOUND;           or return HTTP_NOT_FOUND;
      $tex .= join('', <$file>);       $tex .= join('', <$file>);
         }   }
   
         if ($env{'browser.mathml'}) {   $text = &render($tex, $docroot);
    &Apache::loncommon::content_type($r,'text/xml');  
    &tth::ttminit();  
    if ($env{'browser.unicode'}) {  
        &tth::ttmoptions('-L -u1');  
    } else {  
        &tth::ttmoptions('-L -u0');  
    }  
         } else {  
    &Apache::loncommon::content_type($r,"text/html");  
    &tth::tthinit();  
    if ($env{'browser.unicode'}) {  
        &tth::tthoptions('-L -u1');  
    } else {  
        &tth::tthoptions('-L -u0');  
    }  
         }  
         $text = &render($tex, $docroot, $serverroot);  
      }       }
   
      $r->send_http_header;       $r->send_http_header;
        $r->print($start_page);
      &servetext($r,$text);       &servetext($r,$text);
        $r->print(&Apache::loncommon::end_page());
   
      return OK;       return OK;
 }  }
   
Removed from v.1.21  
changed lines
  Added in v.1.39

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