[BACK]Return to lonsequence.pm CVS log [TXT] [DIR] Up to [LON-CAPA] / rat

Diff for /rat/lonsequence.pm between versions 1.15 and 1.34

version 1.15, 2003/04/07 20:47:06 version 1.34, 2008/11/18 19:13:37
Line 26 Line 26
 #  #
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  #
 # (Handler to resolve ambiguous file locations  
 #  =head1 NAME
 # (TeX Content Handler  
 #  Apache::lonsequence
 # 05/29/00,05/30,10/11 Gerd Kortemeyer)  
 #  =head1 SYNOPSIS
 # 10/11,10/12 Gerd Kortemeyer)  
 #  Handler for showing sequence objects of
 # 10/16 Gerd Kortemeyer  educational resources.
   
   This is part of the LearningOnline Network with CAPA project
   described at http://www.lon-capa.org.
   
   =head1 SUBROUTINES
   
   =over
   
   =item handler()
   
   =item viewmap()
   
   =item attemptread()
   
   =item mapread()
   
   =item start_fresh_session()
   
   =back
   
   =cut
   
 package Apache::lonsequence;  package Apache::lonsequence;
   
Line 42  use strict; Line 63  use strict;
 use Apache::lonnet;  use Apache::lonnet;
 use Apache::Constants qw(:common :http REDIRECT);  use Apache::Constants qw(:common :http REDIRECT);
 use GDBM_File;  use GDBM_File;
 use Apache::lonratedt;  use LONCAPA::map();
 use Apache::lonratsrv;  use Apache::lonpageflip();
 use Apache::lonpageflip;  use Apache::loncommon();
 use Apache::loncommon;  use Apache::groupsort();
   use Apache::lonlocal;
   use HTML::Entities();
   
 my %selhash;  my %selhash;
 my $successtied;  my $successtied;
Line 53  my $successtied; Line 76  my $successtied;
 # ----------------------------------------- Attempt to read from resource space  # ----------------------------------------- Attempt to read from resource space
   
 sub attemptread {  sub attemptread {
     my $fn=shift;      my ($fn,$unsorted)=@_;
     &Apache::lonnet::repcopy($fn);      &Apache::lonnet::repcopy($fn);
     if (-e $fn) {      if (-e $fn) {
  return &Apache::lonratedt::attemptread($fn);   return &LONCAPA::map::attemptread($fn,$unsorted);
     } else {      } else {
         return ();          return ();
     }      }
Line 66  sub mapread { Line 89  sub mapread {
     my $fn=shift;      my $fn=shift;
     &Apache::lonnet::repcopy($fn);      &Apache::lonnet::repcopy($fn);
     if (-e $fn) {      if (-e $fn) {
  return &Apache::lonratedt::mapread($fn,'');   return &LONCAPA::map::mapread($fn,'');
     } else {      } else {
         return ();          return ();
     }      }
Line 76  sub mapread { Line 99  sub mapread {
   
 sub viewmap {  sub viewmap {
     my ($r,$url)=@_;      my ($r,$url)=@_;
     $r->print('<html>');  
     if ($ENV{'form.forceselect'}) { $r->print(<<ENDSCRIPT);      my $js;
 <script>      if ($env{'form.forceselect'}) {
    $js = (<<ENDSCRIPT);
   <script type="text/javascript">
   
 function select_group() {  function select_group() {
     window.location="/adm/groupsort?catalogmode=groupsec&mode=rat&acts="+document.forms.fileattr.acts.value;      window.location="/adm/groupsort?catalogmode=groupsec&mode=rat&acts="+document.forms.fileattr.acts.value;
Line 100  function queue(val) { Line 125  function queue(val) {
 </script>  </script>
 ENDSCRIPT  ENDSCRIPT
     }      }
     $r->print(&Apache::loncommon::bodytag('Map Contents').'<h1>'.$url.'</h1>');  
       $r->print(&Apache::loncommon::start_page('Map Contents',$js).
         '<h1>'.$url.'</h1>');
 # ------------------ This is trying to select. Provide buttons and tie %selhash  # ------------------ This is trying to select. Provide buttons and tie %selhash
     if ($ENV{'form.forceselect'}) { $r->print(<<ENDSELECT);      if ($env{'form.forceselect'}) { $r->print(<<ENDSELECT);
 <form name=fileattr><input type=hidden name=acts value=''>  <form name=fileattr><input type=hidden name=acts value=''>
 <input type="button" name="close" value='CLOSE' onClick="self.close()">  <input type="button" name="close" value='CLOSE' onClick="self.close()">
 <input type="button" name="groupimport" value='GROUP IMPORT'  <input type="button" name="groupimport" value='GROUP IMPORT'
Line 110  onClick="javascript:select_group()"> Line 137  onClick="javascript:select_group()">
 </form>     </form>   
 ENDSELECT  ENDSELECT
     my $diropendb =       my $diropendb = 
     "/home/httpd/perl/tmp/$ENV{'user.domain'}\_$ENV{'user.name'}_groupsec.db";      "/home/httpd/perl/tmp/$env{'user.domain'}\_$env{'user.name'}_sel_res.db";
         if (tie(%selhash,'GDBM_File',$diropendb,&GDBM_WRCREAT(),0640)) {          if (tie(%selhash,'GDBM_File',$diropendb,&GDBM_WRCREAT(),0640)) {
     if ($ENV{'form.launch'} eq '1') {      if ($env{'form.launch'} eq '1') {
        &start_fresh_session();         &start_fresh_session();
     }      }
             $successtied=1;              $successtied=1;
   
 # - Evaluate actions from previous page (both cumulatively and chronologically)  # - Evaluate actions from previous page (both cumulatively and chronologically)
         if ($ENV{'form.catalogmode'} eq 'groupimport') {      if ($env{'form.catalogmode'} eq 'import') {
     my $acts=$ENV{'form.acts'};   &Apache::groupsort::update_actions_hash(\%selhash);
     my @Acts=split(/b/,$acts);  
     my %ahash;  
     my %achash;  
     my $ac=0;  
     # some initial hashes for working with data  
     foreach (@Acts) {  
  my ($state,$ref)=split(/a/);  
  $ahash{$ref}=$state;  
  $achash{$ref}=$ac;  
  $ac++;  
     }      }
     # sorting through the actions and changing the tied database hash  
     foreach (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) {  
  my $key=$_;  
  if ($ahash{$key} eq '1') {  
     $selhash{'store_'.$selhash{'pre_'.$key.'_link'}}=  
  $selhash{'pre_'.$key.'_title'};  
     $selhash{'storectr_'.$selhash{'pre_'.$key.'_link'}}=  
  $selhash{'storectr'}+0;  
     $selhash{'storectr'}++;  
  }  
  if ($ahash{$key} eq '0') {  
     if ($selhash{'store_'.$selhash{'pre_'.$key.'_link'}}) {  
        delete $selhash{'store_'.$selhash{'pre_'.$key.'_link'}};  
     }  
  }  
     }  
     # deleting the previously cached listing  
     foreach (keys %selhash) {  
  if ($_ =~ /^pre_/ && $_ =~/link$/) {  
     my $key = $_;  
     $key =~ s/^pre_//;  
     $key =~ s/_[^_]*$//;  
     delete $selhash{'pre_'.$key.'_title'};  
     delete $selhash{'pre_'.$key.'_link'};  
  }  
     }  
  }  
 # -  # -
         }          }
     }      }
 # ----------------------------- successtied is now '1' if in working selectmode  # ----------------------------- successtied is now '1' if in working selectmode
     my ($errtext,$fatal)=&mapread(&Apache::lonnet::filelocation('',$url),'');      my ($errtext,$fatal)=&mapread(&Apache::lonnet::filelocation('',$url),'');
     if ($fatal==1) {      if ($fatal==1) {
        $r->print('<p><b><font color="red">Map contents are not shown in order.</font></b></p><br />');         $r->print('<p><b><font color="red">'.&mt('Map contents are not shown in order.').'</font></b></p><br />');
     }      }
     my $idx=0;      my $idx=0;
     foreach (&attemptread(&Apache::lonnet::filelocation('',$url))) {      foreach (&attemptread(&Apache::lonnet::filelocation('',$url))) {
Line 174  ENDSELECT Line 164  ENDSELECT
  $r->print('<form name="form'.$idx.'">');   $r->print('<form name="form'.$idx.'">');
             }              }
     my ($title,$url)=split(/\:/,$_);      my ($title,$url)=split(/\:/,$_);
             $title=~s/\&colon\;/\:/g;      $title = &LONCAPA::map::qtescape($title);
             $url=~s/\&colon\;/\:/g;      unless ($title) { $title=(split(/\//,$url))[-1] };
             unless ($title) { $title=(split(/\//,$url))[-1] };              my $enc_title = &HTML::Entities::encode($title,'\'"<>&');
             unless ($title) { $title='<i>Empty</i>'; }      unless ($title) {
    $title='<i>'.&mt('Empty').'</i>';
    $enc_title = &mt('Empty');
       }
       $url  = &LONCAPA::map::qtescape($url);
               my $enc_url = &HTML::Entities::encode($url,'\'"<>&');
             if ($url) {              if ($url) {
  if ($successtied) {   if ($successtied) {
     my $checked='';      my $checked='';
Line 186  ENDSELECT Line 181  ENDSELECT
            }             }
            $selhash{"pre_${idx}_link"}=$url;             $selhash{"pre_${idx}_link"}=$url;
            $selhash{"pre_${idx}_title"}=$title;             $selhash{"pre_${idx}_title"}=$title;
       
       $url  = &HTML::Entities::encode($url, '\'"<>&');
     $r->print(<<ENDCHECKBOX);      $r->print(<<ENDCHECKBOX);
 <input type='checkbox' name='filelink'   <input type='checkbox' name='filelink' 
 value='$url' onClick='javascript:queue("form$idx")'$checked>  value='$enc_url' onClick='javascript:queue("form$idx")'$checked />
 <input type='hidden' name='title' value='$title'>  <input type='hidden' name='title' value='$enc_title' />
 ENDCHECKBOX  ENDCHECKBOX
                 }                  }
  $r->print('<a href="'.&Apache::lonratsrv::qtescape($url).'">');   $r->print('<a href="'.$enc_url.'">');
             }              }
             $r->print(&Apache::lonratsrv::qtescape($title));              $r->print($enc_title);
             if ($url) { $r->print('</a>'); }              if ($url) { $r->print('</a>'); }
             if ($successtied) {              if ($successtied) {
  $r->print('</form>');   $r->print('</form>');
Line 204  ENDCHECKBOX Line 200  ENDCHECKBOX
             }              }
         }          }
     }      }
     $r->print('</body></html>');      $r->print(&Apache::loncommon::end_page());
     if ($successtied) {      if ($successtied) {
  untie %selhash;   untie %selhash;
     }      }
Line 229  sub handler { Line 225  sub handler {
    my $r=shift;     my $r=shift;
   
    if ($r->header_only) {     if ($r->header_only) {
       $r->content_type('text/html');        &Apache::loncommon::content_type($r,'text/html');
       $r->send_http_header;        $r->send_http_header;
       return OK;        return OK;
    }     }
Line 245  sub handler { Line 241  sub handler {
 # ------------------------------------------------------------ Tie symb db file  # ------------------------------------------------------------ Tie symb db file
   my $disurl='';    my $disurl='';
   my $dismapid='';    my $dismapid='';
     my $exitdisid = '';
     my $arrow_dir = '';
   
   if (($ENV{'request.course.fn'}) && (!$ENV{'form.forceselect'})) {    if (($env{'request.course.fn'}) && (!$env{'form.forceselect'})) {
        my $last;         my $last;
        if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',         if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
                     &GDBM_READER(),0640)) {                      &GDBM_READER(),0640)) {
    $last=$hash{'last_direction'};     $last=$hash{'last_direction'};
            untie(%hash);             untie(%hash);
Line 256  sub handler { Line 254  sub handler {
        my $direction='';         my $direction='';
        my $prevmap='';         my $prevmap='';
        if ($last) {         if ($last) {
   ($prevmap,$direction)=(split(/\_\_\_/,$last));     ($prevmap,undef,$direction)=&Apache::lonnet::decode_symb($last);
        }         }
 # ------------------------------------------------------------- Tie big db file  # ------------------------------------------------------------- Tie big db file
        if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',         if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
                     &GDBM_READER(),0640)) {                      &GDBM_READER(),0640)) {
    my $disid='';     my $disid='';
              my $randomout ='';
   
            if ($direction eq 'back') {             if ($direction eq 'back') {
        $disid=$bighash{'map_finish_'.$requrl};         $disid=$bighash{'map_finish_'.$requrl};
            } else {             } else {
                $disid=$bighash{'map_start_'.$requrl};                 $disid=$bighash{'map_start_'.$requrl};
            }              }
            if ($disid) {             if ($disid) {
        $disurl=$bighash{'src_'.$disid};         $disurl=$bighash{'src_'.$disid};
                $dismapid=(split(/\./,$disid))[1];                 $dismapid=(split(/\./,$disid))[1];
          if (!$env{'request.role.adv'}) {
      $randomout = $bighash{'randomout_'.$disid};
          }
              } elsif (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
                       &GDBM_READER(),0640)) {
                  $last=$hash{'last_known'};
                  untie(%hash);
            }             }
 # ------------------------- If this is an empty one, skip to next non-empty one  
            if ((!$disurl) && ($disid)) {  
   # ----------- If this is an empty one, or hidden, skip to next non-empty or non-hidden one
              while ( ((!$disurl) && ($disid)) || ($randomout && $disid) ) {
        $direction=($direction?$direction:'forward');         $direction=($direction?$direction:'forward');
                ($disid,$requrl)=                 ($disid,$requrl)=
                          &Apache::lonpageflip::fullmove($disid,                           &Apache::lonpageflip::fullmove($disid,
Line 281  sub handler { Line 289  sub handler {
                if ($disid) {                 if ($disid) {
            $disurl=$bighash{'src_'.$disid};             $disurl=$bighash{'src_'.$disid};
                    $dismapid=(split(/\./,$disid))[1];                     $dismapid=(split(/\./,$disid))[1];
      if (!$env{'request.role.adv'}) {
          $randomout = $bighash{'randomout_'.$disid};
      }
                }                 }
     }      }
              $exitdisid = $disid;
              $arrow_dir = $direction;
   
 # --------------------------------------- Untie hash, make sure to come by here  # --------------------------------------- Untie hash, make sure to come by here
            untie(%bighash);             untie(%bighash);
Line 290  sub handler { Line 303  sub handler {
    }     }
   
 # now either disurl is set (going to first page), or we need another display  # now either disurl is set (going to first page), or we need another display
   
    if ($disurl) {     if ($disurl) {
 # -------------------------------------------------- Has first or last resource  # -------------------------------------------------- Has first or last resource
       &Apache::lonnet::symblist($requrl,$disurl => $dismapid,        &Apache::lonnet::symblist($requrl,$disurl => [$disurl,$dismapid],
                    'last_known' => &Apache::lonnet::declutter($disurl));    'last_known' => [$disurl,$dismapid]); 
       $r->content_type('text/html');        &Apache::loncommon::content_type($r,'text/html');
       $r->header_out(Location => 'http://'.$ENV{'HTTP_HOST'}.$disurl);        $r->header_out(Location => 'http://'.$ENV{'HTTP_HOST'}.$disurl);
       return REDIRECT;        return REDIRECT;
    } else {     } else {
        $r->content_type('text/html');         &Apache::loncommon::content_type($r,'text/html');
        $r->send_http_header;         $r->send_http_header;
        &viewmap($r,$requrl);         if ($exitdisid eq '' && $arrow_dir ne '') {
              my %lt =&Apache::lonlocal::texthash(
                      'back' => 'beginning',
                      'forward' => 'end',
                      'nere' => 'Next resource could not be displayed',
                      'goba' => 'Go Back',
                      'nacc' => 'Navigate Course Content',
                             );
              my $warnmsg = &mt('As all folders and sequences ');
              if ($arrow_dir eq 'forward') {
                  $warnmsg .= &mt('following the current resource were empty').',';
              } elsif ($arrow_dir eq 'back') {
                  $warnmsg .= &mt('preceding the current resource were empty').',';
              }
              $warnmsg .= &mt('you have now reached the').' '.$lt{$arrow_dir}.' '.&mt('of the course.');
              my $start_page=
          &Apache::loncommon::start_page('Empty Folder/Sequence');
              my $end_page=
          &Apache::loncommon::end_page();
              $r->print(<<ENDNONE);
   $start_page
   <h3>$lt{'nere'}</h3>
   <p>$warnmsg</p>
   <ul>
     <li><a href="javascript:history.go(-1)">$lt{'goba'}</a></li>
     <li><a href="/adm/navmaps">$lt{'nacc'}</a></li>
   </ul>
   $end_page
   ENDNONE
          } else {
              &viewmap($r,$requrl);
          }
        return OK;         return OK;
    }     }
 }  }
Removed from v.1.15  
changed lines
  Added in v.1.34

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
500 Internal Server Error

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at root@localhost to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.