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version 1.8, 2000/08/11 14:57:32 version 1.107, 2003/01/28 00:13:37
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   # The LearningOnline Network with CAPA
 # The LON-CAPA Homework handler  # The LON-CAPA Homework handler
   #
   # $Id$
   #
   # Copyright Michigan State University Board of Trustees
   #
   # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
   #
   # LON-CAPA is free software; you can redistribute it and/or modify
   # it under the terms of the GNU General Public License as published by
   # the Free Software Foundation; either version 2 of the License, or
   # (at your option) any later version.
   #
   # LON-CAPA is distributed in the hope that it will be useful,
   # but WITHOUT ANY WARRANTY; without even the implied warranty of
   # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   # GNU General Public License for more details.
   #
   # You should have received a copy of the GNU General Public License
   # along with LON-CAPA; if not, write to the Free Software
   # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   #
   # /home/httpd/html/adm/gpl.txt
   #
   # http://www.lon-capa.org/
   #
 # Guy Albertelli  # Guy Albertelli
   # 11/30 Gerd Kortemeyer
   # 6/1,8/17,8/18 Gerd Kortemeyer
   # 7/18 Jeremy Bowers
   
 package Apache::lonhomework;  package Apache::lonhomework;
 use strict;  use strict;
 use Apache::style;  use Apache::style();
 use Apache::lonxml;  use Apache::lonxml();
 use Apache::lonnet;  use Apache::lonnet();
 use Apache::inputtags;  use Apache::lonplot();
 use Apache::structuretags;  use Apache::inputtags();
   use Apache::structuretags();
   use Apache::randomlabel();
   use Apache::response();
   use Apache::hint();
   use Apache::outputtags();
   use Apache::caparesponse();
   use Apache::radiobuttonresponse();
   use Apache::optionresponse();
   use Apache::imageresponse();
   use Apache::essayresponse();
   use Apache::externalresponse();
   use Apache::rankresponse();
   use Apache::matchresponse();
   use Apache::Constants qw(:common);
   use HTML::Entities();
   use Apache::loncommon();
   #use Time::HiRes qw( gettimeofday tv_interval );
   
 sub handler {  BEGIN {
   my $request=shift;    &Apache::lonxml::register_insert();
   
   my $target=&get_target();  
   $request->content_type('text/html');  
   $request->send_http_header;  
   &Apache::lonhomework::send_header($request);  
   my $file = "/home/httpd/html".$request->uri;  
   my %mystyle;  
   my $result = '';  
   &Apache::inputtags::initialize_inputtags;  
   $result = Apache::lonxml::xmlparse($target, &getfile($file),  
  &getfile('/home/httpd/html/res/103/albertel/default_homework').&setup_vars($target),%mystyle);  
   #$request->print("Result follows:");  
   $request->print($result);  
   #$request->print(":Result ends");  
   &Apache::lonhomework::send_footer($request);  
 }  }
   
 sub get_target {  sub get_target {
   return "web";    if ( $ENV{'request.state'} eq "published") {
       if ( defined($ENV{'form.grade_target'}  ) 
    && ($ENV{'form.grade_target'} eq 'tex')) {
         return ($ENV{'form.grade_target'});
       } elsif ( defined($ENV{'form.grade_target'}  ) 
    && ($Apache::lonhomework::viewgrades == 'F' )) {
         return ($ENV{'form.grade_target'});
       }
    
       if ( defined($ENV{'form.submitted'})) {
         return ('grade', 'web');
       } else {
         return ('web');
       }
     } elsif ($ENV{'request.state'} eq "construct") {
       if ( defined($ENV{'form.grade_target'}) ) {
         return ($ENV{'form.grade_target'});
       }
       if ( defined($ENV{'form.preview'})) {
         if ( defined($ENV{'form.submitted'})) {
    return ('grade', 'web');
         } else {
    return ('web');
         }
       } else {
         if ( $ENV{'form.problemmode'} eq 'View' ||
      $ENV{'form.problemmode'} eq 'Discard Edits and View') {
    if ( defined($ENV{'form.submitted'}) &&
        (!defined($ENV{'form.resetdata'})) ) {
     return ('grade', 'web','answer');
    } else {
     return ('web','answer');
    }
         } elsif ( $ENV{'form.problemmode'} eq 'Edit' ) {
    if ( $ENV{'form.submitted'} eq 'edit' ) {
     if ( $ENV{'form.submit'} eq 'Submit Changes and View' ) {
       return ('modified','web','answer');
     } else {
       return ('modified','edit');
     }
    } else {
     return ('edit');
    }
         } else {
    return ('web');
         }
       }
     }
     return ();
 }  }
   
 sub setup_vars {  sub setup_vars {
   my ($target) = @_;    my ($target) = @_;
   return ';$external::target='.$target.';';    return ';'
   #  return ';$external::target='.$target.';';
 }  }
   
 sub send_header {  sub send_header {
   my ($request)= @_;    my ($request)= @_;
   $request->print('<html>');    $request->print(&Apache::lontexconvert::header());
   $request->print('<form method="POST" action="'.$request->uri.'">');  #  $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
   }
   
   sub createmenu {
     my ($which,$request)=@_;
     if ($which eq 'grade') {
       $request->print('<script language="JavaScript"> 
             hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","homeworkremote",
                    "height=350,width=150,menubar=no");
             </script>');
     }
 }  }
   
 sub send_footer {  sub send_footer {
   my ($request)= @_;    my ($request)= @_;
   $request->print('</form>');  #  $request->print('</form>');
   $request->print('</html>');    $request->print(&Apache::lontexconvert::footer());
   }
   
   $Apache::lonxml::browse='';
   
   # JB, 9/24/2002: Any changes in this function may require a change
   # in lonnavmaps::resource::getDateStatus.
   sub check_access {
     my ($id) = @_;
     my $date ='';
     my $status;
     my $datemsg = '';
     my $lastdate = '';
     my $temp;
     my $type;
     my $passed;
   
     if ($ENV{'request.state'} eq "construct") {
       &Apache::lonxml::debug("in construction ignoring dates");
       $status='CAN_ANSWER';
       $datemsg='is in under construction';
       return ($status,$datemsg);
     }
   
     &Apache::lonxml::debug("checking for part :$id:");
     &Apache::lonxml::debug("time:".time);
     foreach $temp ("opendate","duedate","answerdate") {
       $lastdate = $date;
       $date = &Apache::lonnet::EXT("resource.$id.$temp");
       my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
       if ($thistype =~ /^(con_lost|no_such_host)/ ||
    $date     =~ /^(con_lost|no_such_host)/) {
    $status='UNAVAILABLE';
    $date="may open later.";
    return($status,$date);
       }
       if ($thistype eq 'date_interval') {
    if ($temp eq 'opendate') {
              $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;
           }
           if ($temp eq 'answerdate') {
              $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;
           }
       }
       &Apache::lonxml::debug("found :$date: for :$temp:");
       if ($date eq '') {
         $date = "an unknown date"; $passed = 0;
       } elsif ($date eq 'con_lost') {
         $date = "an indeterminate date"; $passed = 0;
       } else {
         if (time < $date) { $passed = 0; } else { $passed = 1; }
         $date = localtime $date;
       }
       if (!$passed) { $type=$temp; last; }
     }
     &Apache::lonxml::debug("have :$type:$passed:");
     if ($passed) {
       $status='SHOW_ANSWER';
       $datemsg=$date;
     } elsif ($type eq 'opendate') {
       $status='CLOSED';
       $datemsg = "will open on $date";
     } elsif ($type eq 'duedate') {
       $status='CAN_ANSWER';
       $datemsg = "is due at $date";
     } elsif ($type eq 'answerdate') {
       $status='CLOSED';
       $datemsg = "was due on $lastdate, and answers will be available on $date";
     }
     if ($status eq 'CAN_ANSWER') {
       #check #tries
       my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
       my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
       if ( $tries eq '' ) { $tries = '0'; }
       if ( $maxtries eq '' ) { $maxtries = '2'; } 
       if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; } 
     }
   
     if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
         (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
         return ('UNCHECKEDOUT','needs to be checked out');
     }
   
   
     &Apache::lonxml::debug("sending back :$status:$datemsg:");
     if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
       &Apache::lonxml::debug("should be allowed to browse a resource when closed");
       $status='CAN_ANSWER';
       $datemsg='is closed but you are allowed to view it';
     }
   
     return ($status,$datemsg);
 }  }
   
 sub getfile {  sub showhash {
   my ($filename) = @_;    my (%hash) = @_;
   my $a="";    &showhashsubset(\%hash,'.');
   if (! -e $filename ) {    return '';
     &Apache::lonnet::subscribe($filename);  }
     &Apache::lonnet::repcopy($filename);  
   sub showarray {
       my ($array)=@_;
       my $string="(";
       foreach my $elm (@{ $array }) {
    if (ref($elm)) {
       if ($elm =~ /ARRAY/ ) {
    $string.=&showarray($elm);
       }
    } else {
       $string.="$elm,"
    }
       }
       chop($string);
       $string.=")";
       return $string;
   }
   
   sub showhashsubset {
     my ($hash,$keyre) = @_;
     my $resultkey;
     foreach $resultkey (sort keys %$hash) {
       if ($resultkey =~ /$keyre/) {
         if (ref($$hash{$resultkey})) {
    if ($$hash{$resultkey} =~ /ARRAY/ ) {
       &Apache::lonxml::debug("$resultkey ---- ".
      &showarray($$hash{$resultkey}));
    } elsif ($$hash{$resultkey} =~ /HASH/ ) {
       &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
       &showhashsubset($$hash{$resultkey},'.');
    } else {
       &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
    }
         } else {
    &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
         }
       }
   }    }
   {    &Apache::lonxml::debug("\n<br />restored values^</br>\n");
     my $fh=Apache::File->new($filename);    return '';
   }
   
   sub setuppermissions {
     $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
     $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
     return ''
   }
   
     while (<$fh>) {  sub setupheader {
       $a .=$_;    my $request=$_[0];
     if ($ENV{'browser.mathml'}) {
       $request->content_type('text/xml');
     } else {
       $request->content_type('text/html');
     }
     if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
       &Apache::loncommon::no_cache($request);
     }
     $request->send_http_header;
     return OK if $request->header_only;
     return ''
   }
   
   sub handle_save_or_undo {
     my ($request,$problem,$result) = @_;
     my $file    = &Apache::lonnet::filelocation("",$request->uri);
     my $filebak =$file.".bak";
     my $filetmp =$file.".tmp";
     my $error=0;
   
     if ($ENV{'form.Undo'} eq 'undo') {
       my $error=0;
       if (!copy($file,$filetmp)) { $error=1; }
       if ((!$error) && (!copy($filebak,$file))) { $error=1; }
       if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }
       if (!$error) {
         $request->print("<p><b>Undid changes, Switched $filebak and $file</b></p>");
       } else {
         $request->print("<p><font color=\"red\" size=\"+1\"><b>Unable to undo, unable to switch $filebak and $file</b></font></p>");
         $error=1;
       }
     } else {
       my $fs=Apache::File->new(">$filebak");
       if (defined($fs)) {
         print $fs $$problem;
         $request->print("<b>Making Backup to $filebak</b><br />");
       } else {
         $request->print("<font color=\"red\" size=\"+1\"><b>Unable to make backup $filebak</b></font>");
         $error=2;
       }
       my $fh=Apache::File->new(">$file");
       if (defined($fh)) {
         print $fh $$result;
         $request->print("<b>Saving Modifications to $file</b><br />");
       } else {
         $request->print("<font color=\"red\" size=\"+1\"><b>Unable to write to $file</b></font>");
         $error|=4;
     }      }
   }    }
   return $a    return $error;
   }
   
   sub analyze_header {
       my ($request) = @_;
       my $result.='<html><body bgcolor="#FFFFFF">
               <form name="lonhomework" method="POST" action="'.
         $ENV{'request.uri'}.'">
               <input type="submit" name="problemmode" value="EditXML" />
               <input type="submit" name="problemmode" value="Edit" />
               <hr />
               <input type="submit" name="submit" value="View" />
               <hr />
               List of possible answers:
               </form>';
       $request->print($result);
       $request->rflush();
   }
   
   sub analyze {
       my ($request,$file) = @_;
       &Apache::lonxml::debug("Analyze");
       my $result;
       my %overall;
       my %allparts;
       my $rndseed=$ENV{'form.rndseed'};
       &analyze_header($request);
       for(my $i=1;$i<$ENV{'form.numtoanalyze'}+1;$i++) {
    my $subresult=&Apache::lonnet::ssi($request->uri,
      ('grade_target' => 'analyze'),
      ('rndseed' => $i));
    &Apache::lonxml::debug(":$subresult:");
    (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
    my %analyze=&Apache::lonnet::str2hash($subresult);
    &Apache::lonhomework::showhash(%analyze);
    my @parts = @{ $analyze{'parts'} };
    foreach my $part (@parts) {
       if (!exists($allparts{$part})) {$allparts{$part}=1;};
       if ($analyze{$part.'.type'} eq 'numericalresponse') {
    push( @{ $overall{$part.'.answer'} },
         [@{ $analyze{$part.'.answer'} }]);
       }
    }
       }
       foreach my $part (keys(%allparts)) {
    $request->print('<table><tr><td>Part '.$part.'</td></tr>');
    foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'} })) {
       $request->print('<tr><td>'.join('</td><td>',@{ $answer }).
       '</td></tr>');
    }
       }
       &Apache::lonhomework::showhash(%overall);
       return $result;
   }
   
   sub editxmlmode {
     my ($request,$file) = @_;
     my $result;
     my $problem=&Apache::lonnet::getfile($file);
     if ($problem == -1) {
       &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
       $problem='';
     }
     if (defined($ENV{'form.editxmltext'}) || defined($ENV{'form.Undo'})) {
       my $error=&handle_save_or_undo($request,\$problem,
      \$ENV{'form.editxmltext'});
       if (!$error) { $problem=&Apache::lonnet::getfile($file); }
     }
     &Apache::lonhomework::showhashsubset(\%ENV,'^form');
     if ( $ENV{'form.submit'} eq 'Submit Changes and View' ) {
       &Apache::lonhomework::showhashsubset(\%ENV,'^form');
       $ENV{'form.problemmode'}='View';
       &renderpage($request,$file);
     } else {
       my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
       my $xml_help = Apache::loncommon::help_open_topic("Problem_Editor_XML_Index");
       if ($cols > 80) { $cols = 80; }
       if ($cols < 70) { $cols = 70; }
       if ($rows < 20) { $rows = 20; }
       $result.='<html><body bgcolor="#FFFFFF">
               <form name="lonhomework" method="POST" action="'.
         $ENV{'request.uri'}.'">
               <input type="hidden" name="problemmode" value="EditXML" />
               <input type="submit" name="problemmode" value="Discard Edits and View" />
               <input type="submit" name="problemmode" value="Edit" />
               <hr />
               <input type="submit" name="submit" value="Submit Changes" />
               <input type="submit" name="submit" value="Submit Changes and View" />
               <input type="submit" name="Undo" value="undo" />
               <hr />
               ' . $xml_help . ' Problem Help<br>
               <textarea rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
         &HTML::Entities::encode($problem).'</textarea>
               </form></body></html>';
       $request->print($result);
     }
     return '';
   }
   
   sub renderpage {
     my ($request,$file) = @_;
   
     my (@targets) = &get_target();
     &Apache::lonxml::debug("Running targets ".join(':',@targets));
     foreach my $target (@targets) {
       #my $t0 = [&gettimeofday()];
       my $problem=&Apache::lonnet::getfile($file);
       if ($problem == -1) {
         &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
         $problem='';
       }
   
       my %mystyle;
       my $result = '';
       &Apache::inputtags::initialize_inputtags();
       &Apache::outputtags::initialize_outputtags();
       &Apache::edit::initialize_edit();
       if ($target eq 'analyze') { %Apache::lonhomework::anaylze=(); }
       if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
       if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%ENV,'^form');}
   
       &Apache::lonxml::debug("Should be parsing now");
       $result = &Apache::lonxml::xmlparse($request, $target, $problem,
    &setup_vars($target),%mystyle);
   
       #$request->print("Result follows:");
       if ($target eq 'modified') {
         &handle_save_or_undo($request,\$problem,\$result);
       } else {
         if ($target eq 'analyze') {
    $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
    undef(%Apache::lonhomework::analyze);
         }
         #my $td=&tv_interval($t0);
         #if ( $Apache::lonxml::debug) {
    #$result =~ s:</body>::;
    #$result.="<br />Spent $td seconds processing target $target\n</body>";
         #}
         $request->print($result);
       }
       #$request->print(":Result ends");
       #my $td=&tv_interval($t0);
     }
   }
   
   # with no arg it returns a HTML <option> list of the template titles
   # with one arg it returns the filename associated with the arg passed
   sub get_template_list {
     my ($namewanted,$extension) = @_;
     my $result;
     my @allnames;
     &Apache::lonxml::debug("Looking for :$extension:");
     foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) {
       my $name=&Apache::lonnet::metadata($file,'title');
       if ($namewanted && ($name eq $namewanted)) {
         $result=$file;
         last;
       } else {
    if ($name) { push (@allnames, $name); }
       }
     }
     if (@allnames && !$result) {
       $result="<option>Select a $extension type</option>\n<option>".
         join('</option><option>',sort(@allnames)).'</option>';
     }
     return $result;
   }
   
   sub newproblem {
       my ($request) = @_;
       my $extension=$request->uri;
       $extension=~s:^.*\.([\w]+)$:$1:;
       &Apache::lonxml::debug("Looking for :$extension:");
       if ($ENV{'form.template'} &&
    $ENV{'form.template'} ne "Select a $extension type") {
    use File::Copy;
    my $file = &get_template_list($ENV{'form.template'},$extension);
    my $dest = &Apache::lonnet::filelocation("",$request->uri);
    copy($file,$dest);
    &renderpage($request,$dest);
       } elsif($ENV{'form.newfile'}) {
    # I don't like hard-coded filenames but for now, this will work.
    use File::Copy;
    my $templatefilename = 
       $request->dir_config('lonIncludes').'/templates/blank.problem';
    &Apache::lonxml::debug("$templatefilename");
    my $dest = &Apache::lonnet::filelocation("",$request->uri);
    copy($templatefilename,$dest);
    &renderpage($request,$dest);
       } else {
    my $templatelist=&get_template_list('',$extension);
    my $url=$request->uri;
    my $dest = &Apache::lonnet::filelocation("",$request->uri);
    my $instructions;
    if ($templatelist) { $instructions=", select a template from the pull-down menu below.<br />Then";}
    $request->print(<<ENDNEWPROBLEM);
   <body bgcolor="#FFFFFF">
   <h1>Creating a new $extension resource</h1>
   The requested file <tt>$url</tt> currently does not exist.
   <p>
   To create a new $extension$instructions click on the "Create $extension" button.
   </p>
   <p><form action="$url" method="POST">
   ENDNEWPROBLEM
    if (defined($templatelist)) {
       $request->print("<select name=\"template\">$templatelist</select>");
    }
    $request->print("<br /><input type=\"submit\" name=\"newfile\" value=\"Create $extension\" />");
    $request->print("</form></p></body>");
       }
       return '';
   }
   
   sub view_or_edit_menu {
     my ($request) = @_;
     my $url=$request->uri;
     $request->print(<<EDITMENU);
   <body bgcolor="#FFFFFF">
   <form action="$url" method="POST">
   Would you like to <input type="submit" name="problemmode" value="View"> or
   <input type="submit" name="problemmode" value="Edit"> the problem.
   </form>
   </body>
   EDITMENU
   }
   
   sub handler {
     #my $t0 = [&gettimeofday()];
     my $request=$_[0];
   
   #  if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;}
     $Apache::lonxml::debug=$ENV{'user.debug'};
   
     if (&setupheader($request)) { return OK; }
     $ENV{'request.uri'}=$request->uri;
   
     #setup permissions
     $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
     $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
     &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:");
     # some times multiple problemmodes are submitted, need to select
     # the last one
     &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});
     if ( defined($ENV{'form.problemmode'}) &&
          ref($ENV{'form.problemmode'}) ) {
       &Apache::lonxml::debug("Problem Mode ".join(",",@$ENV{'form.problemmode'}));
       my $mode=$ENV{'form.problemmode'}->[-1];
       undef $ENV{'form.problemmode'};
       $ENV{'form.problemmode'}=$mode;
     }
     &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});
     my $file=&Apache::lonnet::filelocation("",$request->uri);
   
     #check if we know where we are
     if ($ENV{'request.course.fn'} && !&Apache::lonnet::symbread()) { 
       # if we are browsing we might not be able to know where we are
       if ($Apache::lonhomework::browse ne 'F') {
         #should know where we are, so ask
         $request->internal_redirect('/adm/ambiguous'); return;
       }
     }
   
     if ($ENV{'request.state'} eq "construct") {
       if ($ENV{'form.resetdata'} eq 'Reset Submissions') {
         my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
         &Apache::lonnet::tmpreset($symb,'',$domain,$name);
       }
       if ( -e $file ) {
         if (!(defined $ENV{'form.problemmode'})) {
    #first visit to problem in construction space
    #&view_or_edit_menu($request);
    $ENV{'form.problemmode'}='View';
    &renderpage($request,$file);
         } elsif ($ENV{'form.problemmode'} eq 'EditXML') {
    &editxmlmode($request,$file);
         } elsif ($ENV{'form.problemmode'} eq 'Answer Distribution') {
    &analyze($request,$file);
         } else {
    &renderpage($request,$file);
         }
       } else {
         # requested file doesn't exist in contruction space
         &newproblem($request);
       }
     } else {
       # just render the page normally outside of construction space
       &Apache::lonxml::debug("not construct");
       &renderpage($request,$file);
     }
     #my $td=&tv_interval($t0);
     #&Apache::lonxml::debug("Spent $td seconds processing");
     # &Apache::lonhomework::send_footer($request);
     # always turn off debug messages
     $Apache::lonxml::debug=0;
     return OK;
   
 }  }
   
 1;  1;
Removed from v.1.8  
changed lines
  Added in v.1.107

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