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- generates a new tth compliant header

    1: # The LON-CAPA Homework handler
    2: # Guy Albertelli
    3: 
    4: package Apache::lonhomework;
    5: use strict;
    6: use Apache::style;
    7: use Apache::lonxml;
    8: use Apache::lonnet;
    9: use Apache::inputtags;
   10: use Apache::structuretags;
   11: use Apache::response;
   12: 
   13: sub handler {
   14:   my $request=shift;
   15: 
   16:   my $target=&get_target();
   17:   $Apache::lonxml::debug=1;
   18:   if ($ENV{'browser.mathml'}) {
   19:     $request->content_type('text/xml');
   20:   } else {
   21:     $request->content_type('text/html');
   22:   }
   23:   $request->send_http_header;
   24:   return 'OK' if $request->header_only;
   25: 
   26:   &Apache::lonhomework::send_header($request);
   27:   my $file = "/home/httpd/html".$request->uri;
   28:   my %mystyle;
   29:   my $result = '';
   30:   &Apache::inputtags::initialize_inputtags;
   31: 
   32:   my $problem=&Apache::lonnet::getfile($file);
   33:   if ($problem == -1) {
   34:     &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
   35:     $problem='';
   36:   }
   37:   my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
   38:   if ($default == -1) {
   39:     &Apache::lonxml::error("<b>Unable to find <i>$file</i></b>");
   40:     $default='';
   41:   }
   42: 
   43:   $result = Apache::lonxml::xmlparse($target, $problem,
   44: 				     $default.&setup_vars($target),%mystyle);
   45:   #$request->print("Result follows:");
   46:   $request->print($result);
   47:   #$request->print(":Result ends");
   48:   &Apache::lonhomework::send_footer($request);
   49:   return 'OK';
   50: }
   51: 
   52: sub get_target {
   53:   return "web";
   54: }
   55: 
   56: sub setup_vars {
   57:   my ($target) = @_;
   58:   return ';'
   59: #  return ';$external::target='.$target.';';
   60: }
   61: 
   62: sub send_header {
   63:   my ($request)= @_;
   64:   $request->print(&Apache::lontexconvert::header());
   65:   $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
   66: }
   67: 
   68: sub send_footer {
   69:   my ($request)= @_;
   70:   $request->print('</form>');
   71:   $request->print(&Apache::lontexconvert::footer());
   72: }
   73: 
   74: sub getfile {
   75:   my ($filename) = @_;
   76:   my $a="";
   77:   if (! -e $filename ) {
   78:     &Apache::lonnet::subscribe($filename);
   79:     &Apache::lonnet::repcopy($filename);
   80:   }
   81:   {
   82:     my $fh=Apache::File->new($filename);
   83: 
   84:     while (<$fh>) {
   85:       $a .=$_;
   86:     }
   87:   }
   88:   return $a
   89: }
   90: 
   91: 1;
   92: __END__