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Diff for /loncom/interface/loncommon.pm between versions 1.42 and 1.49

version 1.42, 2002/07/01 15:24:44 version 1.49, 2002/08/07 15:39:58
Line 33 Line 33
 # 12/25,12/28 Gerd Kortemeyer  # 12/25,12/28 Gerd Kortemeyer
 # YEAR=2002  # YEAR=2002
 # 1/4 Gerd Kortemeyer  # 1/4 Gerd Kortemeyer
   # 6/24,7/2 H. K. Ng
   
 # Makes a table out of the previous attempts  # Makes a table out of the previous attempts
 # Inputs result_from_symbread, user, domain, course_id  # Inputs result_from_symbread, user, domain, course_id
Line 40 Line 41
   
 # POD header:  # POD header:
   
   =pod
   
 =head1 NAME  =head1 NAME
   
 Apache::loncommon - pile of common routines  Apache::loncommon - pile of common routines
Line 76  package Apache::loncommon; Line 79  package Apache::loncommon;
   
 use strict;  use strict;
 use Apache::lonnet();  use Apache::lonnet();
   use GDBM_File;
 use POSIX qw(strftime);  use POSIX qw(strftime);
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
 use Apache::lonmsg();  use Apache::lonmsg();
 my $readit;  my $readit;
   
   =pod 
   
   =item Global Variables
   
   =over 4
   
   =cut
 # ----------------------------------------------- Filetypes/Languages/Copyright  # ----------------------------------------------- Filetypes/Languages/Copyright
 my %language;  my %language;
 my %cprtag;  my %cprtag;
 my %fe; my %fd;  my %fe; my %fd;
 my %category_extensions;  my %category_extensions;
   
 # -------------------------------------------------------------- Thesaurus data  # ---------------------------------------------- Thesaurus variables
 my @therelated;  
 my @theword;  =pod
 my @thecount;  
 my %theindex;  =item %Keywords  
 my $thetotalcount;  
 my $thefuzzy=2;  A hash used by &keyword to determine if a word is considered a keyword.
 my $thethreshold=0.1/$thefuzzy;  
 my $theavecount;  =item $thesaurus_db_file
   
   Scalar containing the full path to the thesaurus database.                 
   
   =cut
   
   my %Keywords;
   my $thesaurus_db_file;
   
   
   =pod
   
   =back
   
   =cut
   
 # ----------------------------------------------------------------------- BEGIN  # ----------------------------------------------------------------------- BEGIN
   
Line 104  my $theavecount; Line 129  my $theavecount;
 =item BEGIN()   =item BEGIN() 
   
 Initialize values from language.tab, copyright.tab, filetypes.tab,  Initialize values from language.tab, copyright.tab, filetypes.tab,
 and filecategories.tab.  thesaurus.tab, and filecategories.tab.
   
 =cut  =cut
   
 # ----------------------------------------------------------------------- BEGIN  # ----------------------------------------------------------------------- BEGIN
   
 BEGIN {  BEGIN {
       # Variable initialization
       $thesaurus_db_file = $Apache::lonnet::perlvar{'lonTabDir'}."/thesaurus.db";
       #
     unless ($readit) {      unless ($readit) {
 # ------------------------------------------------------------------- languages  # ------------------------------------------------------------------- languages
     {      {
Line 167  BEGIN { Line 195  BEGIN {
     }      }
  }   }
     }      }
 # -------------------------------------------------------------- Thesaurus data  
     {  
  my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.  
        '/thesaurus.dat');  
  if ($fh) {  
             while (<$fh>) {  
                my ($tword,$tindex,$tcount,$trelated)=split(/\@/,$_);  
                $theindex{$tword}=$tindex;  
                $theword[$tindex]=$tword;  
                $thecount[$tindex]=$tcount;  
                $thetotalcount+=$tcount;  
                $therelated[$tindex]=$trelated;  
    }  
         }  
         $theavecount=$thetotalcount/$#thecount;  
     }  
     &Apache::lonnet::logthis(      &Apache::lonnet::logthis(
               "<font color=yellow>INFO: Read file types and thesaurus</font>");                "<font color=yellow>INFO: Read file types</font>");
     $readit=1;      $readit=1;
 }      }  # end of unless($readit) 
           
 }  }
 # ============================================================= END BEGIN BLOCK  # ============================================================= END BEGIN BLOCK
Line 341  my %menu = ( A1 => { text =>"Choice A1" Line 353  my %menu = ( A1 => { text =>"Choice A1"
                   }                    }
               );                );
   
 =back  
   
 =cut  =cut
   
 # ------------------------------------------------  # ------------------------------------------------
Line 427  END Line 437  END
   
 ###############################################################  ###############################################################
   
   =pod
   
   =item help_open_topic($topic, $text, $stayOnPage, $width, $height)
   
   Returns a string corresponding to an HTML link to the given help $topic, where $topic corresponds to the name of a .tex file in /home/httpd/html/adm/help/tex, with underscores replaced by spaces.
   
   $text will optionally be linked to the same topic, allowing you to link text in addition to the graphic. If you do not want to link text, but wish to specify one of the later parameters, pass an empty string.
   
   $stayOnPage is a value that will be interpreted as a boolean. If true, the link will not open a new window. If false, the link will open a new window using Javascript. (Default is false.)
   
   $width and $height are optional numerical parameters that will override the width and height of the popped up window, which may be useful for certain help topics with big pictures included.
   
   =cut
   
   sub help_open_topic {
       my ($topic, $text, $stayOnPage, $width, $height) = @_;
       $text = "" if (not defined $text);
       $stayOnPage = 0 if (not defined $stayOnPage);
       $width = 350 if (not defined $width);
       $height = 400 if (not defined $height);
       my $filename = $topic;
       $filename =~ s/ /_/g;
   
       my $template = "";
       my $link;
   
       if (!$stayOnPage)
       {
    $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height'))";
       }
       else
       {
    $link = "/adm/help/${filename}.hlp";
       }
   
       # Add the text
       if ($text ne "")
       {
    $template .= "<a href=\"$link\">$text</a> ";
       }
   
       # Add the graphic
       $template .= <<"ENDTEMPLATE";
   <a href="$link"><image src="/adm/help/gif/smallHelp.gif" border="0" alt="(Help: $topic)"></a>
   ENDTEMPLATE
   
       return $template;
   
   }
   
   =pod
   
 =item csv_translate($text)   =item csv_translate($text) 
   
 Translate $text to allow it to be output as a 'comma seperated values'   Translate $text to allow it to be output as a 'comma seperated values' 
Line 442  sub csv_translate { Line 504  sub csv_translate {
 }  }
   
 ###############################################################  ###############################################################
   
 ###############################################################  
 ##        Home server <option> list generating code          ##  ##        Home server <option> list generating code          ##
 ###############################################################  ###############################################################
 #-------------------------------------------  #-------------------------------------------
   
   =pod
   
 =item get_domains()  =item get_domains()
   
 Returns an array containing each of the domains listed in the hosts.tab  Returns an array containing each of the domains listed in the hosts.tab
Line 468  sub get_domains { Line 530  sub get_domains {
   
 #-------------------------------------------  #-------------------------------------------
   
   =pod
   
 =item select_dom_form($defdom,$name)  =item select_dom_form($defdom,$name)
   
 Returns a string containing a <select name='$name' size='1'> form to   Returns a string containing a <select name='$name' size='1'> form to 
Line 492  sub select_dom_form { Line 556  sub select_dom_form {
   
 #-------------------------------------------  #-------------------------------------------
   
   =pod
   
 =item get_home_servers($domain)  =item get_home_servers($domain)
   
 Returns a hash which contains keys like '103l3' and values like   Returns a hash which contains keys like '103l3' and values like 
Line 514  sub get_home_servers { Line 580  sub get_home_servers {
   
 #-------------------------------------------  #-------------------------------------------
   
   =pod
   
 =item home_server_option_list($domain)  =item home_server_option_list($domain)
   
 returns a string which contains an <option> list to be used in a   returns a string which contains an <option> list to be used in a 
Line 546  sub home_server_option_list { Line 614  sub home_server_option_list {
 ##    formname = the name given in the <form> tag.  ##    formname = the name given in the <form> tag.
 #-------------------------------------------  #-------------------------------------------
   
   =pod
   
 =item authform_xxxxxx  =item authform_xxxxxx
   
 The authform_xxxxxx subroutines provide javascript and html forms which   The authform_xxxxxx subroutines provide javascript and html forms which 
Line 747  END Line 817  END
 ##   End Authentication changing form generation functions   ##  ##   End Authentication changing form generation functions   ##
 ###############################################################  ###############################################################
   
   ###############################################################
   ##                Thesaurus Functions                        ##
   ###############################################################
   
   =pod
   
 # ---------------------------------------------------------- Is this a keyword?  =item initialize_keywords
   
 sub keyword {  Initializes the package variable %Keywords if it is empty.  Uses the
     my $newword=shift;  package variable $thesaurus_db_file.
     $newword=~s/\W//g;  
     $newword=~tr/A-Z/a-z/;  =cut
     my $tindex=$theindex{$newword};  
     if ($tindex) {  ###################################################
         if ($thecount[$tindex]>$theavecount) {  
            return 1;  sub initialize_keywords {
         }      return 1 if (scalar keys(%Keywords));
       # If we are here, %Keywords is empty, so fill it up
       #   Make sure the file we need exists...
       if (! -e $thesaurus_db_file) {
           &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
                                    " failed because it does not exist");
           return 0;
       }
       #   Set up the hash as a database
       my %thesaurus_db;
       if (! tie(%thesaurus_db,'GDBM_File',
                 $thesaurus_db_file,&GDBM_READER,0640)){
           &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
                                    $thesaurus_db_file);
           return 0;
       } 
       #  Get the average number of appearances of a word.
       my $avecount = $thesaurus_db{'average.count'};
       #  Put keywords (those that appear > average) into %Keywords
       while (my ($word,$data)=each (%thesaurus_db)) {
           my ($count,undef) = split /:/,$data;
           $Keywords{$word}++ if ($count > $avecount);
       }
       untie %thesaurus_db;
       # Remove special values from %Keywords.
       foreach ('total.count','average.count') {
           delete($Keywords{$_}) if (exists($Keywords{$_}));
     }      }
     return 0;      return 1;
 }  }
   
   ###################################################
   
   =pod
   
   =item keyword($word)
   
   Returns true if $word is a keyword.  A keyword is a word that appears more 
   than the average number of times in the thesaurus database.  Calls 
   &initialize_keywords
   
   =cut
   
   ###################################################
   
   sub keyword {
       return if (!&initialize_keywords());
       my $word=lc(shift());
       $word=~s/\W//g;
       return exists($Keywords{$word});
   }
   
   ###################################################
   #         Old code, to be removed soon            #
   ###################################################
 # -------------------------------------------------------- Return related words  # -------------------------------------------------------- Return related words
   #sub related {
   #    my $newword=shift;
   #    $newword=~s/\W//g;
   #    $newword=~tr/A-Z/a-z/;
   #    my $tindex=$theindex{$newword};
   #    if ($tindex) {
   #        my %found=();
   #        foreach (split(/\,/,$therelated[$tindex])) {
   ## - Related word found
   #            my ($ridx,$rcount)=split(/\:/,$_);
   ## - Direct relation index
   #            my $directrel=$rcount/$thecount[$tindex];
   #            if ($directrel>$thethreshold) {
   #               foreach (split(/\,/,$therelated[$ridx])) {
   #                  my ($rridx,$rrcount)=split(/\:/,$_);
   #                  if ($rridx==$tindex) {
   ## - Determine reverse relation index
   #                     my $revrel=$rrcount/$thecount[$ridx];
   ## - Calculate full index
   #                     $found{$ridx}=$directrel*$revrel;
   #                     if ($found{$ridx}>$thethreshold) {
   #                        foreach (split(/\,/,$therelated[$ridx])) {
   #                            my ($rrridx,$rrrcount)=split(/\:/,$_);
   #                            unless ($found{$rrridx}) {
   #                               my $revrevrel=$rrrcount/$thecount[$ridx];
   #                               if (
   #                          $directrel*$revrel*$revrevrel>$thethreshold
   #                               ) {
   #                                  $found{$rrridx}=
   #                                       $directrel*$revrel*$revrevrel;
   #                               }
   #                            }
   #                        }
   #                     }
   #                  }
   #               }
   #            }
   #        }
   #    }
   #    return ();
   #}
   
 sub related {  ###############################################################
     my $newword=shift;  
     $newword=~s/\W//g;  =pod 
     $newword=~tr/A-Z/a-z/;  
     my $tindex=$theindex{$newword};  =item get_related_words
     if ($tindex) {  
         my %found=();  Look up a word in the thesaurus.  Takes a scalar arguement and returns
         foreach (split(/\,/,$therelated[$tindex])) {  an array of words.  If the keyword is not in the thesaurus, an empty array
 # - Related word found  will be returned.  The order of the words returned is determined by the
             my ($ridx,$rcount)=split(/\:/,$_);  database which holds them.
 # - Direct relation index  
             my $directrel=$rcount/$thecount[$tindex];  Uses global $thesaurus_db_file.
             if ($directrel>$thethreshold) {  
                foreach (split(/\,/,$therelated[$ridx])) {  =cut
                   my ($rridx,$rrcount)=split(/\:/,$_);  
                   if ($rridx==$tindex) {  ###############################################################
 # - Determine reverse relation index  
                      my $revrel=$rrcount/$thecount[$ridx];  sub get_related_words {
 # - Calculate full index      my $keyword = shift;
                      $found{$ridx}=$directrel*$revrel;      my %thesaurus_db;
                      if ($found{$ridx}>$thethreshold) {      if (! -e $thesaurus_db_file) {
                         foreach (split(/\,/,$therelated[$ridx])) {          &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
                             my ($rrridx,$rrrcount)=split(/\:/,$_);                                   "failed because the file does not exist");
                             unless ($found{$rrridx}) {          return ();
                                my $revrevrel=$rrrcount/$thecount[$ridx];      }
                                if (      if (! tie(%thesaurus_db,'GDBM_File',
                           $directrel*$revrel*$revrevrel>$thethreshold                $thesaurus_db_file,&GDBM_READER,0640)){
                                ) {          return ();
                                   $found{$rrridx}=      } 
                                        $directrel*$revrel*$revrevrel;      my @Words=();
                                }      if (exists($thesaurus_db{$keyword})) {
                             }          $_ = $thesaurus_db{$keyword};
                         }          (undef,@Words) = split/:/;  # The first element is the number of times
                      }                                      # the word appears.  We do not need it now.
                   }          for (my $i=0;$i<=$#Words;$i++) {
                }              ($Words[$i],undef)= split/\,/,$Words[$i];
             }  
         }          }
     }      }
     return ();      untie %thesaurus_db;
       return @Words;
 }  }
   
   ###############################################################
   ##              End Thesaurus Functions                      ##
   ###############################################################
   
 # ---------------------------------------------------------------- Language IDs  # ---------------------------------------------------------------- Language IDs
 sub languageids {  sub languageids {
     return sort(keys(%language));      return sort(keys(%language));
Line 864  sub filedescriptionex { Line 1034  sub filedescriptionex {
 # $username,$domain - that of the student  # $username,$domain - that of the student
 # $course           - course name  # $course           - course name
 # $getattempt       - leave blank if want all attempts, else put something.  # $getattempt       - leave blank if want all attempts, else put something.
   # $regexp           - regular expression. If string matches regexp send to
   # $gradesub         - routine that process the string if it matches regexp
 #   # 
 # output  # output
 # formatted as a table all the attempts, if any.  # formatted as a table all the attempts, if any.
 #  #
 sub get_previous_attempt {  sub get_previous_attempt {
   my ($symb,$username,$domain,$course,$getattempt)=@_;    my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
   my $prevattempts='';    my $prevattempts='';
     no strict 'refs';
   if ($symb) {    if ($symb) {
     my (%returnhash)=      my (%returnhash)=
       &Apache::lonnet::restore($symb,$course,$domain,$username);        &Apache::lonnet::restore($symb,$course,$domain,$username);
Line 882  sub get_previous_attempt { Line 1055  sub get_previous_attempt {
   $lasthash{$_}=$returnhash{$version.':'.$_};    $lasthash{$_}=$returnhash{$version.':'.$_};
         }          }
       }        }
       $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#000000">';        $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
       $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';        $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
       foreach (sort(keys %lasthash)) {        foreach (sort(keys %lasthash)) {
  my ($ign,@parts) = split(/\./,$_);   my ($ign,@parts) = split(/\./,$_);
Line 920  sub get_previous_attempt { Line 1093  sub get_previous_attempt {
  } else {   } else {
   $value=$lasthash{$_};    $value=$lasthash{$_};
  }   }
    if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
  $prevattempts.='<td>'.$value.'&nbsp;</td>';   $prevattempts.='<td>'.$value.'&nbsp;</td>';
       }        }
       $prevattempts.='</tr></table></td></tr></table>';        $prevattempts.='</tr></table></td></tr></table>';
Line 1031  sub add_to_env { Line 1205  sub add_to_env {
   
 =pod  =pod
   
   =back 
   
 =head2 CSV Upload/Handling functions  =head2 CSV Upload/Handling functions
   
 =over 4  =over 4
Removed from v.1.42  
changed lines
  Added in v.1.49

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