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Diff for /loncom/homework/lonhomework.pm between versions 1.46 and 1.51

version 1.46, 2001/06/12 22:42:55 version 1.51, 2001/08/06 18:24:37
Line 1 Line 1
 # The LON-CAPA Homework handler  # The LON-CAPA homework handler
 # Guy Albertelli  # 
   # Handles homework.
   #
   # YEAR=2000
   # 7/25,8/2,8/7,8/8,8/11,9/14,9/19,10/2,10/5,10/11,11/7,11/21 Guy Albertelli
 # 11/30 Gerd Kortemeyer  # 11/30 Gerd Kortemeyer
   # 12/4,12/8,12/12,12/15,12/19,12/21 Guy Albertelli
   # YEAR=2001
   # 1/6,1/8,1/9,1/10,1/11,1/12,1/15,1/25,2/7,2/13,2/19,4/16,4/26 Guy Albertelli
   # 5/4,5/13,5/21 Guy Albertelli
 # 6/1 Gerd Kortemeyer  # 6/1 Gerd Kortemeyer
   # 6/5,6/12,6/26,7/2,7/18 Guy Albertelli
   # 8/6 Scott Harrison
   
 package Apache::lonhomework;  package Apache::lonhomework;
 use strict;  use strict;
Line 14  use Apache::response; Line 24  use Apache::response;
 use Apache::hint;  use Apache::hint;
 use Apache::outputtags;  use Apache::outputtags;
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
   #use Time::HiRes qw( gettimeofday tv_interval );
   
   # ======================================================================= BEGIN
 sub BEGIN {  sub BEGIN {
   &Apache::lonxml::register_insert();    &Apache::lonxml::register_insert();
 }  }
   
   # =============================================== Get target (returns an array)
 sub get_target {  sub get_target {
   if ( $ENV{'request.state'} eq "published") {      if ( $ENV{'request.state'} eq "published") {
     if ( defined $ENV{'form.submitted'}) {  
       return ('grade', 'web');  
     } else {  
       return ('web');  
     }  
   } elsif ($ENV{'request.state'} eq "construct") {  
     if ( defined $ENV{'form.preview'}) {  
       if ( defined $ENV{'form.submitted'}) {  
  return ('grade', 'web');  
       } else {  
  return ('web');  
       }  
     } else {  
       if ( $ENV{'form.problemmode'} eq 'View' ) {  
  if ( defined $ENV{'form.submitted'}) {   if ( defined $ENV{'form.submitted'}) {
   return ('grade', 'web');      return ('grade','web');
  } else {   } else {
   return ('web');      return ('web');
  }   }
       } elsif ( $ENV{'form.problemmode'} eq 'Edit' ) {      } elsif ($ENV{'request.state'} eq "construct") {
  if ( $ENV{'form.submitted'} eq 'edit' ) {   if ( defined $ENV{'form.preview'}) {
   return ('modified','edit');      if ( defined $ENV{'form.submitted'}) {
    return ('grade','web');
       } else {
    return ('web');
       }
  } else {   } else {
   return ('edit');      if ( $ENV{'form.problemmode'} eq 'View' ) {
    if ( defined $ENV{'form.submitted'}) {
       return ('grade','web');
    } else {
       return ('web');
    }
       } elsif ( $ENV{'form.problemmode'} eq 'Edit' ) {
    if ( $ENV{'form.submitted'} eq 'edit' ) {
       return ('modified','edit');
    } else {
       return ('edit');
    }
       } else {
    return ('web');
       }
  }   }
       } else {  
  return ('web');  
       }  
     }      }
   }      return ();
   return ();  
 }  }
   
   # ===================================== Set up variables (return scalar string)
 sub setup_vars {  sub setup_vars {
   my ($target) = @_;      my ($target) = @_;
   return ';'      return ';'
 #  return ';$external::target='.$target.';';  #  return ';$external::target='.$target.';';
 }  }
   
   # ================================================================= Send header
 sub send_header {  sub send_header {
   my ($request)= @_;      my ($request) = @_;
   $request->print(&Apache::lontexconvert::header());      $request->print(&Apache::lontexconvert::header());
 #  $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');  #  $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
 }  }
   
   # ================================================================= Create menu
 sub createmenu {  sub createmenu {
   my ($which,$request)=@_;      my ($which,$request) = @_;
   if ($which eq 'grade') {      if ($which eq 'grade') {
     $request->print('<script language="JavaScript">    $request->print('<script language="JavaScript">'."\n".
           hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","homeworkremote",          'hwkmenu=window.open("/res/adm/pages/homeworkmenu.html'.
                  "height=350,width=150,menubar=no");        '","homeworkremote","height=350,width=150,menubar=no");'.
           </script>');        '</script>');
   }      }
 }  }
   
   # ================================================================= Send footer
 sub send_footer {  sub send_footer {
   my ($request)= @_;      my ($request) = @_;
 #  $request->print('</form>');  #  $request->print('</form>');
   $request->print(&Apache::lontexconvert::footer());      $request->print(&Apache::lontexconvert::footer());
 }  }
   
 $Apache::lonxml::browse='';  $Apache::lonxml::browse = '';
   
   # =============================================== Check date (returns an array)
 sub check_date {  sub check_date {
   my ($id) = @_;      my ($id) = @_;
   my $date ='';      my $date ='';
   my $status = '';      my $status = '';
   my $datemsg = '';      my $datemsg = '';
   my $lastdate = '';      my $lastdate = '';
   my $temp;      my $temp;
   my $type;      my $type;
   my $passed;      my $passed;
   &Apache::lonxml::debug("checking for part :$id:");      &Apache::lonxml::debug("checking for part :$id:");
   foreach $temp ("opendate","duedate","answerdate") {      foreach $temp ("opendate","duedate","answerdate") {
     $lastdate = $date;   $lastdate = $date;
     $date = &Apache::lonnet::EXT("resource.$id.$temp");   $date = &Apache::lonnet::EXT("resource.$id.$temp");
     &Apache::lonxml::debug("found :$date: for :$temp:");   &Apache::lonxml::debug("found :$date: for :$temp:");
     if ($date eq '') {   if ($date eq '') {
       $date = "an unknown date"; $passed = 0;      $date = "an unknown date"; $passed = 0;
     } elsif ($date eq 'con_lost') {   } elsif ($date eq 'con_lost') {
       $date = "an indeterminate date"; $passed = 0;      $date = "an indeterminate date"; $passed = 0;
     } else {   } else {
       if (time < $date) { $passed = 0; } else { $passed = 1; }      if (time < $date) { $passed = 0; } else { $passed = 1; }
       $date = localtime $date;      $date = localtime $date;
    }
    if (!$passed) { $type = $temp; last; }
     }      }
     if (!$passed) { $type=$temp; last; }      &Apache::lonxml::debug("have :$type:$passed:");
   }      if ($passed) {
   &Apache::lonxml::debug("have :$type:$passed:");   $status = 'SHOW_ANSWER';
   if ($passed) {   $datemsg = $date;
     $status='SHOW_ANSWER';      } elsif ($type eq 'opendate') {
     $datemsg=$date;   $status = 'CLOSED';
   } elsif ($type eq 'opendate') {   $datemsg = "will open on $date";
     $status='CLOSED';      } elsif ($type eq 'duedate') {
     $datemsg = "will open on $date";   $status = 'CAN_ANSWER';
   } elsif ($type eq 'duedate') {   $datemsg = "is due at $date";
     $status='CAN_ANSWER';      } elsif ($type eq 'answerdate') {
     $datemsg = "is due at $date";   $status = 'CLOSED';
   } elsif ($type eq 'answerdate') {   $datemsg = "was due on $lastdate, and answers will be available on ".
     $status='CLOSED';             "$date";
     $datemsg = "was due on $lastdate, and answers will be available on $date";      }
   }      if ($status eq 'CAN_ANSWER') {
   if ($status eq 'CAN_ANSWER') {   #check #tries
     #check #tries   my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
     my $tries = $Apache::lonhomework::history{"resource.$id.tries"};   my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
     my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");   if ( $tries eq '' ) { $tries = '0'; }
     if ( $tries eq '' ) { $tries = '0'; }   if ( $maxtries eq '' ) { $maxtries = '2'; } 
     if ( $maxtries eq '' ) { $maxtries = '2'; }    if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; } 
     if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }       }
   }      &Apache::lonxml::debug("sending back :$status:$datemsg:");
   &Apache::lonxml::debug("sending back :$status:$datemsg:");      if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
   if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {   &Apache::lonxml::debug("should be allowed to browse a resource when ".
     &Apache::lonxml::debug("should be allowed to browse a resource when closed");         "closed");
     $status='CAN_ANSWER';   $status = 'CAN_ANSWER';
     $datemsg='is closed but you are allowed to view it';   $datemsg = 'is closed but you are allowed to view it';
   }      }
   if ($ENV{'request.state'} eq "construct") {      if ($ENV{'request.state'} eq "construct") {
     &Apache::lonxml::debug("in construction ignoring dates");   &Apache::lonxml::debug("in construction ignoring dates");
     $status='CAN_ANSWER';   $status = 'CAN_ANSWER';
     $datemsg='is in under construction';   $datemsg = 'is in under construction';
   }      }
   return ($status,$datemsg);      return ($status,$datemsg);
 }  }
   
   # ================================================================== Shows hash
 sub showhash {  sub showhash {
   my (%hash) = @_;      my (%hash) = @_;
   my $resultkey;      my $resultkey;
   foreach $resultkey (sort keys %hash) {      foreach $resultkey (sort keys %hash) {
     &Apache::lonxml::debug("$resultkey ---- $hash{$resultkey}");   &Apache::lonxml::debug("$resultkey ---- $hash{$resultkey}");
   }      }
   &Apache::lonxml::debug("\n<br />restored values^</br>\n");      &Apache::lonxml::debug("\n<br />restored values^</br>\n");
   return '';      return '';
 }  }
   
   # =========================================================== Setup permissions
 sub setuppermissions {  sub setuppermissions {
   $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});      $Apache::lonhomework::browse = &Apache::lonnet::allowed('bre',
   $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});       $ENV{'request.filename'});
   return ''      $Apache::lonhomework::viewgrades = &Apache::lonnet::allowed('vgr',
       $ENV{'request.course.id'});
       return '';
 }  }
   
   # ================================================================ Setup header
 sub setupheader {  sub setupheader {
   my $request=$_[0];      my $request = $_[0];
   if ($ENV{'browser.mathml'}) {      if ($ENV{'browser.mathml'}) {
     $request->content_type('text/xml');   $request->content_type('text/xml');
   } else {      } else {
     $request->content_type('text/html');   $request->content_type('text/html');
   }      }
   $request->send_http_header;      $request->send_http_header;
   return OK if $request->header_only;      return OK if $request->header_only;
   return ''      return '';
 }  }
   
 sub renderpage {  # ========================================================= Handle save or undo
   my ($request,$file) = @_;  sub handle_save_or_undo {
       my ($request,$problem,$result) = @_;
   my (@targets) = &get_target();      my $fileout = &Apache::lonnet::filelocation("",$request->uri);
   foreach my $target (@targets) {      my $filesave = $fileout.".bak";
     my $problem=&Apache::lonnet::getfile($file);      if ($ENV{'form.Undo'} eq 'undo') {
     if ($problem == -1) {   if (copy($filesave,$fileout)) {
       &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");      $request->print("<b>Undid changes, Copied $filesave to $fileout".
       $problem='';      "<br /></b>");
     }  
   
     my %mystyle;  
     my $result = '';  
     &Apache::inputtags::initialize_inputtags;  
     &Apache::edit::initialize_edit;  
     %Apache::lonhomework::results=();  
     %Apache::lonhomework::history=&Apache::lonnet::restore();  
     #ignore error conditions  
     my ($temp)=keys %Apache::lonhomework::history ;  
     if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }   
     if ($target eq 'web') {  
       if (&Apache::lonnet::symbread() eq '') {  
  if ($ENV{'request.state'} eq "construct") {  
   $request->print("In construction space, submissions ignored<br />");  
  } else {   } else {
   $request->print("Browsing or <a href=\"/adm/ambiguous\">ambiguous</a> reference, submissions ignored<br />");      $request->print("<font color=\"red\" size=\"+1\"><b>Unable to ".
       "undo, unable to copy $filesave to $fileout<br ".
       "/></b></font>");
  }   }
       }  
       #if ($Apache::lonhomework::viewgrades eq 'F') {&createmenu('grade',$request); }  
     }  
     if ($target eq 'grade') { &showhash(%Apache::lonhomework::history); }  
   
     my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');  
     if ($default == -1) {  
       &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");  
       $default='';  
     }  
     $result = &Apache::lonxml::xmlparse($target, $problem,  
  $default.&setup_vars($target),%mystyle);  
   
     #$request->print("Result follows:");  
     if ($target eq 'modified') {  
       my $fileout = &Apache::lonnet::filelocation("",$request->uri);  
       my $filesave=$fileout.".bak";  
   
       my $fs=Apache::File->new(">$filesave");  
       print $fs $problem;  
       $request->print("<b>Making Backup to $filesave</b><br />");  
   
       my $fh=Apache::File->new(">$fileout");  
       print $fh $result;  
       $request->print("<b>Saving Modifications to $fileout</b><br />");  
     } else {      } else {
       $request->print($result);   my $fs=Apache::File->new(">$filesave");
    if (defined($fs)) {
       print $fs $$problem;
       $request->print("<b>Making Backup to $filesave</b><br />");
    } else {
       $request->print("<font color=\"red\" size=\"+1\"><b>Unable to ".
       "make backup $filesave</b></font>");
    }
    my $fh=Apache::File->new(">$fileout");
    if (defined($fh)) {
       print $fh $$result;
       $request->print("<b>Saving Modifications to $fileout</b><br />");
    } else {
       $request->print("<font color=\"red\" size=\"+1\"><b>Unable to ".
       "write to $fileout</b></font>");
    }
     }      }
     #$request->print(":Result ends");  }
     if ($target eq 'grade') { &showhash(%Apache::lonhomework::results); }  
   
     #store new values  # ================================================================= Render page
     my ($temp) = keys %Apache::lonhomework::results;  sub renderpage {
     if ( $temp ne '' ) {      my ($request,$file) = @_;
       &Apache::lonxml::debug("Store return message:".      
      &Apache::lonnet::cstore(\%Apache::lonhomework::results));      my (@targets) = &get_target();
       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 $result = '';
    &Apache::inputtags::initialize_inputtags;
    &Apache::edit::initialize_edit;
    %Apache::lonhomework::results=();
    %Apache::lonhomework::history=&Apache::lonnet::restore();
    #ignore error conditions
    my ($temp)=keys %Apache::lonhomework::history ;
    if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); } 
    if ($target eq 'web') {
       if (&Apache::lonnet::symbread() eq '') {
    if ($ENV{'request.state'} eq "construct") {
       $request->print("In construction space, submissions ".
       "ignored<br />");
    } else {
       $request->print("Browsing or <a href=\"/adm/ambiguous\">".
       "ambiguous</a> reference, submissions ".
       "ignored<br />");
    }
       }
       #if ($Apache::lonhomework::viewgrades eq 'F') {&createmenu('grade',$request); }
    }
    if ($target eq 'grade') { &showhash(%Apache::lonhomework::history); }
   
    my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/'.
        'includes/default_homework.lcpm');
    if ($default == -1) {
       &Apache::lonxml::error("<b>Unable to find <i>default_homework.".
      "lcpm</i></b>");
       $default='';
    }
    $result = &Apache::lonxml::xmlparse($target, $problem,
       $default.&setup_vars($target),
       %mystyle);
    #$request->print("Result follows:");
    if ($target eq 'modified') {
       &handle_save_or_undo($request,\$problem,\$result);
    } else {
       #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);
    }
    #$request->print(":Result ends");
    if ($target eq 'grade') { &showhash(%Apache::lonhomework::results); }
   
    #store new values
    my ($temp) = keys %Apache::lonhomework::results;
    if ( $temp ne '' ) {
       &Apache::lonxml::debug("Store return message:".
         &Apache::lonnet::cstore(\%Apache::lonhomework::results));
    }
    #my $td=&tv_interval($t0);
     }      }
   }  
 }  }
   
   # =========================================================== Get template list
 # with no arg it returns a HTML <option> list of the template titles  # 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  # with one arg it returns the filename associated with the arg passed
 sub get_template_list {  sub get_template_list {
   my ($namewanted) = @_;      my ($namewanted,$extension) = @_;
   my $result;      my $result;
   foreach my $file (</home/httpd/html/res/adm/includes/templates/*.problem>) {      &Apache::lonxml::debug("Looking for :$extension:");
     my $name=&Apache::lonnet::metadata($file,'title');      foreach my $file
     if ($namewanted && ($name eq $namewanted)) {   (</home/httpd/html/res/adm/includes/templates/*.$extension>) {
       $result=$file;   my $name=&Apache::lonnet::metadata($file,'title');
       last;   if ($namewanted && ($name eq $namewanted)) {
     } else {      $result=$file;
       $result.="<option>$name</option>";      last;
    } else {
       $result.="<option>$name</option>";
    }
     }      }
   }      return $result;
   return $result;  
 }  }
   
   # ================================================================= New problem
 sub newproblem {  sub newproblem {
   my ($request) = @_;      my ($request) = @_;
       my $extension = $request->uri;
   if ($ENV{'form.template'}) {      $extension =~ s:^.*\.([\w]+)$:$1:;
     use File::Copy;      &Apache::lonxml::debug("Looking for :$extension:");
     my $file = &get_template_list($ENV{'form.template'});      if ($ENV{'form.template'}) {
     my $dest = &Apache::lonnet::filelocation("",$request->uri);   use File::Copy;
     copy($file,$dest);   my $file = &get_template_list($ENV{'form.template'},$extension);
     &renderpage($request,$file);   my $dest = &Apache::lonnet::filelocation("",$request->uri);
   } else {   copy($file,$dest);
     my $templatelist=&get_template_list();   &renderpage($request,$file);
     my $url=$request->uri;      } else {
     $request->print(<<ENDNEWPROBLEM);   my $templatelist = &get_template_list('',$extension);
    my $url = $request->uri;
    my $dest = &Apache::lonnet::filelocation("",$request->uri);
    $request->print(<<ENDNEWPROBLEM);
 <body bgcolor="#FFFFFF">  <body bgcolor="#FFFFFF">
 The request file $url doesn\'t exist. You can create a new problem <br />  The request file $url doesn\'t exist. You can create a new $extension <br />
 <form action="$url" method="POST">  <form action="$url" method="POST">
 <input type="submit" value="New Problem"><br />  <input type="submit" value="New $extension"><br />
 <select name="template">  <select name="template">
 $templatelist  $templatelist
 </select>  </select>
Line 285  ENDNEWPROBLEM Line 355  ENDNEWPROBLEM
 }  }
   
 sub view_or_edit_menu {  sub view_or_edit_menu {
   my ($request) = @_;      my ($request) = @_;
   my $url=$request->uri;      my $url = $request->uri;
   $request->print(<<EDITMENU);      $request->print(<<EDITMENU);
 <body bgcolor="#FFFFFF">  <body bgcolor="#FFFFFF">
 <form action="$url" method="POST">  <form action="$url" method="POST">
 Would you like to <input type="submit" name="problemmode" value="View"> or  Would you like to <input type="submit" name="problemmode" value="View"> or
Line 297  Would you like to <input type="submit" n Line 367  Would you like to <input type="submit" n
 EDITMENU  EDITMENU
 }  }
   
   # ===================================================================== Handler
 sub handler {  sub handler {
   my $request=$_[0];      #my $t0 = [&gettimeofday()];
       my $request = $_[0];
   
   #if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;}      if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug = 1;}
   
   if (&setupheader($request)) { return OK; }    if (&setupheader($request)) { return OK; }
   $ENV{'request.uri'}=$request->uri;    $ENV{'request.uri'} = $request->uri;
   
   #setup permissions    #setup permissions
   $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});      $Apache::lonhomework::browse = &Apache::lonnet::allowed('bre',
   $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});       $ENV{'request.filename'});
   &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:");      $Apache::lonhomework::viewgrades = &Apache::lonnet::allowed('vgr',
       $ENV{'request.course.id'});
   my $file=&Apache::lonnet::filelocation("",$request->uri);      &Apache::lonxml::debug("Permissions:".
      $Apache::lonhomework::browse.":".
   #check if we know where we are     $Apache::lonhomework::viewgrades.":");
   if ($ENV{'request.course.fn'} && !&Apache::lonnet::symbread()) {   
     # if we are browsing we might not be able to know where we are      my $file = &Apache::lonnet::filelocation("",$request->uri);
     if ($Apache::lonhomework::browse ne 'F') {  
       #should know where we are, so ask      #check if we know where we are
       $request->internal_redirect('/adm/ambiguous'); return;      if ($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{'request.state'} eq "construct") {
     if ( -e $file ) {   if ( -e $file ) {
       if (!(defined $ENV{'form.problemmode'})) {      if (!(defined $ENV{'form.problemmode'})) {
  #first visit to problem in construction space   #first visit to problem in construction space
  &view_or_edit_menu($request);   &view_or_edit_menu($request);
  #&renderpage($request,$file);   #&renderpage($request,$file);
       } else {      } else {
  &renderpage($request,$file);   &renderpage($request,$file);
       }        }
    } else {
       # requested file doesn't exist in contruction space
       &newproblem($request);
    }
     } else {      } else {
       # requested file doesn't exist in contruction space   # just render the page normally outside of construction space
       &newproblem($request);   &renderpage($request,$file);
     }      }
   } else {      #my $td=&tv_interval($t0);
     # just render the page normally outside of construction space      #&Apache::lonxml::debug("Spent $td seconds processing");
     &renderpage($request,$file);      # &Apache::lonhomework::send_footer($request);
   }      # always turn off debug messages
       $Apache::lonxml::debug=0;
   # &Apache::lonhomework::send_footer($request);      return OK;
   # always turn off debug messages  
   $Apache::lonxml::debug=0;  
   return OK;  
   
 }  }
   
 1;  1;
   
 __END__  __END__
Removed from v.1.46  
changed lines
  Added in v.1.51

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