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Diff for /loncom/interface/lonhelp.pm between versions 1.3 and 1.23

version 1.3, 2002/07/26 19:58:52 version 1.23, 2006/03/18 13:22:07
Line 31  package Apache::lonhelp; Line 31  package Apache::lonhelp;
   
 use strict;  use strict;
 use Apache::Constants qw(:common :http);  use Apache::Constants qw(:common :http);
 use Apache::File;  use Apache::File();
 use Apache::loncommon;  use Apache::loncommon();
 use tth;  use Apache::lonacc();
 use GDBM_File;  use Apache::lontexconvert();
   use Apache::lonnavmaps; # for advancedUser
   use Apache::lonlocal;
   use Apache::lonnet;
   use tth();
   use GDBM_File();
   
 # 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.
 sub processLabelName   
 {  sub processLabelName {
     my ($name) = @_;      my ($name) = @_;
     $name =~ tr/a-zA-Z0-9/_/cs;      $name =~ tr/a-zA-Z0-9/_/cs;
     return $name;      return $name;
 }  }
   
 # Serve out the Tex  # Serve out the text
 sub serveTex  sub servetext {
 {      my ($r,$text) = @_;
     my ($tex, $r) = @_;      my $html=&Apache::lonxml::xmlbegin();
       my $htmlend=&Apache::lonxml::xmlend();
 $r->print(<<HEADER);      my $bugs=&Apache::loncommon::help_open_bug('Documentation');
 <html>      my $header=&mt('LON-CAPA Help');
       $r->print(<<HEADER);
   $html
     <head>      <head>
         <title>LON-CAPA Help</title>          <title>LON-CAPA Help</title>
     </head>      </head>
     <body bgcolor="#FFFFFF">      <body bgcolor="#FFFFFF">
       <h3 style="font: sans-serif"><img align="right"
       src="/adm/help/gif/lonhelpheader.gif"/>$header<hr />$bugs</h3>
     <!-- BEGIN -->      <!-- BEGIN -->
 HEADER  HEADER
   
     $r->print($tex);      $r->print($text);
   
 $r->print(<<FOOTER);      if (&Apache::lonnavmaps::advancedUser()) {
    my $search=&mt('Search LON-CAPA help');
    my $about=&mt('About LON-CAPA help and More Help');
    $r->print(<<FOOTER);
     <!-- END -->      <!-- END -->
       <hr /><form method="post">
   $search: <input type="text" name="searchterm" size="40" /><br />
   <a href="/adm/help/abouthelp.html">$about</a>
     </body>      </body>
 </html>  $htmlend
 FOOTER  FOOTER
      } else {
          $r->print(<<ENDBODY);
       <!-- END -->
       </body>
   $htmlend
   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, $serverroot) = @_;
     tie (my %fragmentLabels, 'GDBM_File', $docroot . '/adm/help/fragmentLabels.gdbm', 0, 0);      tie (my %fragmentLabels, 'GDBM_File', $docroot . '/adm/help/fragmentLabels.gdbm', 0, 0);
   
Line 83  sub render Line 104  sub render
     # LaTeX .aux files      # LaTeX .aux files
     # absolute paths for use with help.loncapa.org      # absolute paths for use with help.loncapa.org
     $tex =~ s|  \\ref\{([^}]*)\}      $tex =~ s|  \\ref\{([^}]*)\}
              |'\\begin{html}<a href="http://' . $serverroot ."/adm/help/".               |
                 if (not(exists($fragmentLabels{$1}))) {
             &Apache::lonnet::logthis("ERROR: $1 not a valid help label");
                 };
                '\\begin{html}<a href="http://' . $serverroot ."/adm/help/".
               substr($fragmentLabels{$1}, 0, -4) .                substr($fragmentLabels{$1}, 0, -4) .
               '.hlp#' . processLabelName($1) .                 '.hlp#' . &processLabelName($1) . 
              '"><img src="http://' . $serverroot . '/adm/help/gif/smallHelp.gif" border="0" /></a>' .               '"><img src="http://' . $serverroot . '/adm/help/gif/smallHelp.gif" border="0" /></a>' .
              '\\end{html}'               '\\end{html}'
              |gxe;               |gxe;
Line 99  sub render Line 124  sub render
                 ' bordercolor="#000000"/>\\end{html}'                  ' bordercolor="#000000"/>\\end{html}'
              |gxe;               |gxe;
   
     $tex = tth::tth($tex);  
   
       $tex=&Apache::lontexconvert::tth_converted(\$tex);
       
     # Finish backslashes      # Finish backslashes
     $tex =~ s/###BACKSLASH###/'\\'/ge;      $tex =~ s/###BACKSLASH###/'\\'/ge;
     
Line 111  sub render Line 137  sub render
     # just duck the issue...      # just duck the issue...
   
     $tex =~ s/Figure 0://g;      $tex =~ s/Figure 0://g;
        $tex.=$Apache::lontexconvert::errorstring;
     untie %fragmentLabels;      untie %fragmentLabels;
   
     return $tex;      return $tex;
 }  }
   
 sub handler  sub listmatches {
 {      my ($docroot,$term) =@_;
       my $output='';
       opendir(DIR,$docroot.'/adm/help/tex/');
       foreach my $filename (sort readdir(DIR)) {
    if ($filename=~/\.tex$/) {
       open(FH,$docroot.'/adm/help/tex/'.$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;
       $line=~s/(\Q$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/;
    $output.='<li><a href="/adm/help/tex/'.$filename.'">'.$title.'</a>'.$quote.'</li>';
       }
    }
       }
       closedir(DIR);
       return ($output?'<ul>'.$output.'</ul>':&mt('"[_1]" not found',$term));
   }
   
   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'};       my $serverroot = $ENV{'HTTP_HOST'};
   
      my $filename = substr ($ENV{'REQUEST_URI'} ,        &Apache::lonlocal::get_language_handle($r);
     rindex($ENV{'REQUEST_URI'}, '/') + 1, -4);       my $text='';
             if ($env{'form.searchterm'}=~/\w/) {
      # Security check on the file; the whole filename must consist   &Apache::loncommon::content_type($r,"text/html");
      # of nothing but alphanums, ' ,, or ., or the file   $text=&listmatches($docroot,$env{'form.searchterm'});
      # will be "not found", no matter what.       } else {
         my $filenames = &Apache::lonnet::unescape(substr ($ENV{'REQUEST_URI'} , 
      return 404 if ($filename !~ /\A[-0-9a-zA-z_'',.]+\Z/);     rindex($ENV{'REQUEST_URI'}, '/') + 1, -4));
     
      (my $file = Apache::File->new($docroot . "/adm/help/tex/".$filename.'.tex'))   # Security check on the file; the whole filename must consist
  or return 404;   # of nothing but alphanums, ' ,, or ., or the file
      my $tex = join('', <$file>);   # will be "not found", no matter what.
      $tex = render($tex, $docroot, $serverroot);    
      $r->content_type("text/html");   return HTTP_NOT_FOUND if ($filenames !~ /\A[-0-9a-zA-z_'',:.]+\Z/);
      serveTex($tex, $r);    
    # Join together the tex files, return HTTP_NOT_FOUND if any of
    # them are not found
    my $tex = '';
    # Since in insertlist.tab I want to specify multiple files,
    # and insertlist.tab also uses commas, I need something else
    # so replace : with ,
    $filenames =~ s/:/,/g;
    my @files = split(/,/, $filenames);
     
    for my $filename (@files) {
        if (-e $docroot.'/adm/help/tex/'.
    &Apache::lonlocal::current_language().'/'.
    $filename.'.tex') {
    $filename=&Apache::lonlocal::current_language().'/'.$filename;
        }
        (my $file = Apache::File->new($docroot
      . '/adm/help/tex/'.$filename.'.tex'))
            or return HTTP_NOT_FOUND;
        $tex .= join('', <$file>);
    }
     
    if ($env{'browser.mathml'}) {
        &Apache::loncommon::content_type($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);
        }
   
        $r->send_http_header;
        &servetext($r,$text);
      return OK;       return OK;
 }  }
   
Removed from v.1.3  
changed lines
  Added in v.1.23

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