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Diff for /loncom/homework/lonhomework.pm between versions 1.36 and 1.83

version 1.36, 2001/02/07 00:29:30 version 1.83, 2002/07/29 20:40:34
Line 1 Line 1
   # 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  # 11/30 Gerd Kortemeyer
 # 6/1 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::response;  use Apache::structuretags();
 use Apache::hint;  use Apache::randomlabel();
 use Apache::outputtags;  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::Constants qw(:common);  use Apache::Constants qw(:common);
   use HTML::Entities();
   use Apache::loncommon();
   #use Time::HiRes qw( gettimeofday tv_interval );
   
   BEGIN {
     &Apache::lonxml::register_insert();
   }
   
 sub get_target {  sub get_target {
   if ( $ENV{'request.state'} eq "published") {    if ( $ENV{'request.state'} eq "published") {
     if ( defined $ENV{'form.submitted'}) {      if ( defined($ENV{'form.grade_target'}) 
    && ($Apache::lonhomework::viewgrades == 'F' )) {
         return ($ENV{'form.grade_target'});
       }
       if ( defined($ENV{'form.submitted'})) {
       return ('grade', 'web');        return ('grade', 'web');
     } else {      } else {
       return ('web');        return ('web');
     }      }
   } elsif ($ENV{'request.state'} eq "construct") {    } elsif ($ENV{'request.state'} eq "construct") {
     if ( defined $ENV{'form.preview'}) {      if ( defined($ENV{'form.grade_target'}) ) {
       if ( defined $ENV{'form.submitted'}) {        return ($ENV{'form.grade_target'});
       }
       if ( defined($ENV{'form.preview'})) {
         if ( defined($ENV{'form.submitted'})) {
  return ('grade', 'web');   return ('grade', 'web');
       } else {        } else {
  return ('web');   return ('web');
       }        }
     } else {      } else {
       #return ('edit');        if ( $ENV{'form.problemmode'} eq 'View' ) {
       #edit is currently broken   if ( defined($ENV{'form.submitted'}) &&
       return ('web');       (!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 ( $ENV{'form.submit'} eq 'Submit Changes and View' ) {
       return ('modified','web','answer');
     } else {
       return ('modified','edit');
     }
    } else {
     return ('edit');
    }
         } else {
    return ('web');
         }
     }      }
   }    }
   return ();    return ();
Line 47  sub setup_vars { Line 113  sub setup_vars {
 sub send_header {  sub send_header {
   my ($request)= @_;    my ($request)= @_;
   $request->print(&Apache::lontexconvert::header());    $request->print(&Apache::lontexconvert::header());
   $ENV{'request.uri'}=$request->uri;  
 #  $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');  #  $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
 }  }
   
Line 55  sub createmenu { Line 120  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"> 
           hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","LONCAPAhomeworkmenu",            hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","homeworkremote",
                  "height=350,width=150,menubar=no");                   "height=350,width=150,menubar=no");
           </script>');            </script>');
   }    }
Line 68  sub send_footer { Line 133  sub send_footer {
 }  }
   
 $Apache::lonxml::browse='';  $Apache::lonxml::browse='';
 sub check_date {  
   sub check_access {
   my ($id) = @_;    my ($id) = @_;
   my $date ='';    my $date ='';
   my $status = '';    my $status = '';
Line 78  sub check_date { Line 144  sub check_date {
   my $type;    my $type;
   my $passed;    my $passed;
   &Apache::lonxml::debug("checking for part :$id:");    &Apache::lonxml::debug("checking for part :$id:");
     &Apache::lonxml::debug("time:".time);
   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");
Line 114  sub check_date { Line 181  sub check_date {
     if ( $maxtries eq '' ) { $maxtries = '2'; }       if ( $maxtries eq '' ) { $maxtries = '2'; } 
     if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }       if ($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:");    &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 closed");      &Apache::lonxml::debug("should be allowed to browse a resource when closed");
Line 128  sub check_date { Line 202  sub check_date {
   return ($status,$datemsg);    return ($status,$datemsg);
 }  }
   
 sub handler {  sub showhash {
   my $request=$_[0];    my (%hash) = @_;
     &showhashsubset(\%hash,'');
     return '';
   }
   
   if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;} else {$Apache::lonxml::debug=0;}  sub showhashsubset {
       my ($hash,$keyre) = @_;
   my (@targets) = &get_target();    my $resultkey;
     foreach $resultkey (sort keys %$hash) {
       if ($resultkey =~ /$keyre/) {
         if (ref($$hash{$resultkey})) {
    if ($$hash{$resultkey} =~ /ARRAY/ ) {
     my $string="$resultkey ---- (";
     foreach my $elm (@{ $$hash{$resultkey} }) {
       $string.="$elm,";
     }
     chop($string);
     &Apache::lonxml::debug("$string)");
    } else {
     &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
    }
         } else {
    &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
         }
       }
     }
     &Apache::lonxml::debug("\n<br />restored values^</br>\n");
     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 ''
   }
   
   sub setupheader {
     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');      $request->content_type('text/html');
   }    }
     if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
       &Apache::loncommon::no_cache($request);
     }
   $request->send_http_header;    $request->send_http_header;
   return OK if $request->header_only;    return OK if $request->header_only;
     return ''
   }
   
   #setup permissions  sub handle_save_or_undo {
   $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre');    my ($request,$problem,$result) = @_;
   $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr');    my $file    = &Apache::lonnet::filelocation("",$request->uri);
   &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:");    my $filebak =$file.".bak";
     my $filetmp =$file.".tmp";
   #check if we know where we are    my $error=0;
   if ($ENV{'request.course.fn'} && !&Apache::lonnet::symbread()) {   
     # if we are browsing we might not be able to know where we are    if ($ENV{'form.Undo'} eq 'undo') {
     if ($Apache::lonhomework::browse ne 'F') {      my $error=0;
       #should know where we are, so ask      if (!copy($file,$filetmp)) { $error=1; }
       $request->internal_redirect('/adm/ambiguous'); return;       if ((!$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 $error;
   }
   
   sub analyze {
     my ($request,$file) = @_;
     &Apache::lonxml::debug("Analyze");
     my $result=&Apache::lonnet::ssi($request->uri,('grade_target' => 'analyze'));
     &Apache::lonxml::debug(":$result:");
     (my $garbage,$result)=split(/_HASH_REF__/,$result,2);
     &showhash(&Apache::lonnet::str2hash($result));
     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; }
       $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) = @_;
   
   &Apache::lonhomework::send_header($request);    my (@targets) = &get_target();
       &Apache::lonxml::debug("Running targets ".join(':',@targets));
   foreach my $target (@targets) {    foreach my $target (@targets) {
     my $file=&Apache::lonnet::filelocation("",$request->uri);      #my $t0 = [&gettimeofday()];
     my $problem=&Apache::lonnet::getfile($file);      my $problem=&Apache::lonnet::getfile($file);
     if ($problem == -1) {      if ($problem == -1) {
       &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");        &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
       $problem='';        $problem='';
     }      }
       
     my %mystyle;      my %mystyle;
     my $result = '';      my $result = '';
     &Apache::inputtags::initialize_inputtags;      &Apache::inputtags::initialize_inputtags;
     %Apache::lonhomework::results=();      &Apache::edit::initialize_edit;
     %Apache::lonhomework::history=&Apache::lonnet::restore;      if ($target eq 'analyze') { %Apache::lonhomework::anaylze=(); }
     #ignore error conditions  
     my ($temp)=keys %Apache::lonhomework::history ;  
     if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }   
     if ($target eq 'web') {      if ($target eq 'web') {
       if (&Apache::lonnet::symbread() eq '') {        my ($symb)=&Apache::lonxml::whichuser();
         if ($symb eq '') {
  if ($ENV{'request.state'} eq "construct") {   if ($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>");    $request->print("Browsing or <a href=\"/adm/ambiguous\">ambiguous</a> reference, submissions ignored<br />");
  }   }
       }        }
       if ($Apache::lonhomework::viewgrades eq 'F') {&createmenu('grade',$request); }        #if ($Apache::lonhomework::viewgrades eq 'F') {&createmenu('grade',$request); }
     }  
     if ($target eq 'grade') {  
       my $resultkey;  
       foreach $resultkey (sort keys %Apache::lonhomework::history) {  
  &Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::history{$resultkey}");  
       }  
       &Apache::lonxml::debug("\n<br>restored values^</br>\n");  
     }      }
       #if ($target eq 'grade') { &showhash(%Apache::lonhomework::history); }
       #if ($target eq 'web') { &showhash(%ENV); }
   
     my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');      my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
     if ($default == -1) {      if ($default == -1) {
       &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");        &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
       $default='';        $default='';
     }      }
     $result = &Apache::lonxml::xmlparse($target, $problem,      &Apache::lonxml::debug("Should be parsing now");
       $result = &Apache::lonxml::xmlparse($request, $target, $problem,
  $default.&setup_vars($target),%mystyle);   $default.&setup_vars($target),%mystyle);
   
     #$request->print("Result follows:");      #$request->print("Result follows:");
     $request->print($result);      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);
       }
     #$request->print(":Result ends");      #$request->print(":Result ends");
     if ($target eq 'grade') {      #my $td=&tv_interval($t0);
     }
   }
   
       my $resultkey;  # with no arg it returns a HTML <option> list of the template titles
       foreach $resultkey (sort keys %Apache::lonhomework::results) {  # with one arg it returns the filename associated with the arg passed
  &Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::results{$resultkey}");  sub get_template_list {
       }    my ($namewanted,$extension) = @_;
       &Apache::lonxml::debug("\n<br>storing values^</br>\n");    my $result;
     &Apache::lonxml::debug("Looking for :$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 {
         $result.="<option>$name</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'}) {
    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);
    if (!defined($templatelist)) {
       # We didn't find a template, so just create a blank problem.
       $request->print(<<ENDNEWPROBLEM);
   <body bgcolor="#FFFFFF">
   The requested file $url doesn\'t exist. You can create a new $extension <br />
   <form action="$url" method="POST">
   <input type="submit" name="newfile" value="New $extension"><br />
   </form>
   </body>
   ENDNEWPROBLEM
               return '';
           }
    $request->print(<<ENDNEWPROBLEM);
   <body bgcolor="#FFFFFF">
   The requested file $url doesn\'t exist. You can create a new $extension <br />
   <form action="$url" method="POST">
   <input type="submit" value="New $extension"><br />
   <select name="template">
   $templatelist
   </select>
   </form>
   </body>
   ENDNEWPROBLEM
       }
       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;}
   
     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
         $request->internal_redirect('/adm/ambiguous'); return;
     }      }
         }
     my ($temp) = keys %Apache::lonhomework::results;  
     if ( $temp ne '' ) {    if ($ENV{'request.state'} eq "construct") {
       &Apache::lonxml::debug("Store return message:".&Apache::lonnet::cstore(%Apache::lonhomework::results));      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);
   }    }
   &Apache::lonhomework::send_footer($request);    #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;    return OK;
   
 }  }
Removed from v.1.36  
changed lines
  Added in v.1.83

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