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Diff for /loncom/metadata_database/searchcat.pl between versions 1.4 and 1.75

version 1.4, 2001/04/16 12:08:34 version 1.75, 2007/01/02 12:52:22
Line 1 Line 1
 #!/usr/bin/perl  #!/usr/bin/perl
 # The LearningOnline Network  # The LearningOnline Network
 # searchcat.pl "Search Catalog" batch script  # searchcat.pl "Search Catalog" batch script
   #
   # $Id$
   #
   # 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/
   #
   ###
   
   =pod
   
   =head1 NAME
   
   B<searchcat.pl> - put authoritative filesystem data into sql database.
   
   =head1 SYNOPSIS
   
   Ordinarily this script is to be called from a loncapa cron job
   (CVS source location: F<loncapa/loncom/cron/loncapa>; typical
   filesystem installation location: F</etc/cron.d/loncapa>).
   
   Here is the cron job entry.
   
   C<# Repopulate and refresh the metadata database used for the search catalog.>
   C<10 1 * * 7    www    /home/httpd/perl/searchcat.pl>
   
   This script only allows itself to be run as the user C<www>.
   
   =head1 DESCRIPTION
   
   This script goes through a loncapa resource directory and gathers metadata.
   The metadata is entered into a SQL database.
   
   This script also does general database maintenance such as reformatting
   the C<loncapa:metadata> table if it is deprecated.
   
   This script evaluates dynamic metadata from the authors'
   F<nohist_resevaldata.db> database file in order to store it in MySQL.
   
   This script is playing an increasingly important role for a loncapa
   library server.  The proper operation of this script is critical for a smooth
   and correct user experience.
   
   =cut
   
   use strict;
   use DBI;
   use lib '/home/httpd/lib/perl/';
   use LONCAPA::lonmetadata;
   
 # 04/14/2001 Scott Harrison  use Getopt::Long;
   
 # This script goes through a LON-CAPA resource  
 # directory and gathers metadata.  
 # The metadata is entered into a SQL database.  
   
 use IO::File;  use IO::File;
 use HTML::TokeParser;  use HTML::TokeParser;
   use GDBM_File;
   use POSIX qw(strftime mktime);
   
 my @metalist;  use Apache::lonnet();
 # ----------------- Code to enable 'find' subroutine listing of the .meta files  
 require "find.pl";  use File::Find;
 sub wanted {  
     (($dev,$ino,$mode,$nlink,$uid,$gid) = lstat($_)) &&  #
     -f _ &&  # Set up configuration options
     /^.*\.meta$/ &&  my ($simulate,$oneuser,$help,$verbose,$logfile,$debug);
     push(@metalist,"$dir/$_");  GetOptions (
 }              'help'     => \$help,
               'simulate' => \$simulate,
 # ------------------------------------ Read httpd access.conf and get variables              'only=s'   => \$oneuser,
 open (CONFIG,"/etc/httpd/conf/access.conf") || die "Can't read access.conf";              'verbose=s'  => \$verbose,
               'debug' => \$debug,
 while ($configline=<CONFIG>) {              );
     if ($configline =~ /PerlSetVar/) {  
  my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);  if ($help) {
         chomp($varvalue);      print <<"ENDHELP";
         $perlvar{$varname}=$varvalue;  $0
     }  Rebuild and update the LON-CAPA metadata database. 
   Options:
       -help          Print this help
       -simulate      Do not modify the database.
       -only=user     Only compute for the given user.  Implies -simulate   
       -verbose=val   Sets logging level, val must be a number
       -debug         Turns on debugging output
   ENDHELP
       exit 0;
   }
   
   if (! defined($debug)) {
       $debug = 0;
   }
   
   if (! defined($verbose)) {
       $verbose = 0;
   }
   
   if (defined($oneuser)) {
       $simulate=1;
   }
   
   ##
   ## Use variables for table names so we can test this routine a little easier
   my %oldnames = (
                    'metadata'    => 'metadata',
                    'portfolio'   => 'portfolio_metadata',
                    'access'      => 'portfolio_access',
                    'addedfields' => 'portfolio_addedfields',
                  );
   
   my %newnames;
   # new table names -  append pid to have unique temporary tables
   foreach my $key (keys(%oldnames)) {
       $newnames{$key} = 'new'.$oldnames{$key}.$$;
 }  }
 close(CONFIG);  
   
   #
   # Only run if machine is a library server
   exit if ($Apache::lonnet::perlvar{'lonRole'} ne 'library');
   #
   #  Make sure this process is running from user=www
   my $wwwid=getpwnam('www');
   if ($wwwid!=$<) {
       my $emailto="$Apache::lonnet::perlvar{'lonAdmEMail'},$Apache::lonnet::perlvar{'lonSysEMail'}";
       my $subj="LON: $Apache::lonnet::perlvar{'lonHostID'} User ID mismatch";
       system("echo 'User ID mismatch. searchcat.pl must be run as user www.' |\
    mail -s '$subj' $emailto > /dev/null");
       exit 1;
   }
   #
   # Let people know we are running
   open(LOG,'>>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/logs/searchcat.log');
   &log(0,'==== Searchcat Run '.localtime()."====");
   
   
   if ($debug) {
       &log(0,'simulating') if ($simulate);
       &log(0,'only processing user '.$oneuser) if ($oneuser);
       &log(0,'verbosity level = '.$verbose);
   }
   #
   # Connect to database
 my $dbh;  my $dbh;
 # ------------------------------------- Make sure that database can be accessed  if (! ($dbh = DBI->connect("DBI:mysql:loncapa","www",$Apache::lonnet::perlvar{'lonSqlAccess'},
 {                            { RaiseError =>0,PrintError=>0}))) {
     unless (      &log(0,"Cannot connect to database!");
     $dbh = DBI->connect("DBI:mysql:loncapa","www",$perlvar{'lonSqlAccess'},{ RaiseError =>0,PrintError=>0})      die "MySQL Error: Cannot connect to database!\n";
     ) {   }
  print "Cannot connect to database!\n";  # This can return an error and still be okay, so we do not bother checking.
  exit;  # (perhaps it should be more robust and check for specific errors)
   foreach my $key (keys(%newnames)) {
       if ($newnames{$key} ne '') {
           $dbh->do('DROP TABLE IF EXISTS '.$newnames{$key});
       }
   }
   
   #
   # Create the new metadata and portfolio tables
   foreach my $key (keys(%newnames)) {
       if ($newnames{$key} ne '') { 
           my $request =
                &LONCAPA::lonmetadata::create_metadata_storage($newnames{$key},$oldnames{$key});
           $dbh->do($request);
           if ($dbh->err) {
               $dbh->disconnect();
               &log(0,"MySQL Error Create: ".$dbh->errstr);
               die $dbh->errstr;
           }
       }
   }
   
   #
   # find out which users we need to examine
   my @domains = sort(&Apache::lonnet::current_machine_domains());
   &log(9,'domains ="'.join('","',@domains).'"');
   
   foreach my $dom (@domains) {
       &log(9,'domain = '.$dom);
       opendir(RESOURCES,"$Apache::lonnet::perlvar{'lonDocRoot'}/res/$dom");
       my @homeusers = 
           grep {
               &ishome("$Apache::lonnet::perlvar{'lonDocRoot'}/res/$dom/$_");
           } grep { 
               !/^\.\.?$/;
           } readdir(RESOURCES);
       closedir RESOURCES;
       &log(5,'users = '.$dom.':'.join(',',@homeusers));
       #
       if ($oneuser) {
           @homeusers=($oneuser);
       }
       #
       # Loop through the users
       foreach my $user (@homeusers) {
           &log(0,"=== User: ".$user);
           &process_dynamic_metadata($user,$dom);
           #
           # Use File::Find to get the files we need to read/modify
           find(
                {preprocess => \&only_meta_files,
                 #wanted     => \&print_filename,
                 #wanted     => \&log_metadata,
                 wanted     => \&process_meta_file,
                 no_chdir   => 1,
                }, join('/',($Apache::lonnet::perlvar{'lonDocRoot'},'res',$dom,$user)) );
       }
       # Search for public portfolio files
       my %portusers;
       if ($oneuser) {
           %portusers = (
                           $oneuser => '',
                          );
       } else {
           my $dir = $Apache::lonnet::perlvar{lonUsersDir}.'/'.$dom;
           &descend_tree($dir,0,\%portusers);
       }
       foreach my $uname (keys(%portusers)) {
           my $urlstart = '/uploaded/'.$dom.'/'.$uname;
           my $pathstart = &propath($dom,$uname).'/userfiles';
           my $is_course = &Apache::lonnet::is_course($dom,$uname);
           my $curr_perm = &Apache::lonnet::get_portfile_permissions($dom,$uname);
           my %access = &Apache::lonnet::get_access_controls($curr_perm);
           foreach my $file (keys(%access)) {
               my ($group,$url,$fullpath);
               if ($is_course) {
                   ($group, my ($path)) = ($file =~ /^(\w+)(\/.+)$/);
                   $fullpath = $pathstart.'/groups/'.$group.'/portfolio'.$path;
                   $url = $urlstart.'/groups/'.$group.'/portfolio'.$path;
               } else {
                   $fullpath = $pathstart.'/portfolio'.$file;
                   $url = $urlstart.'/portfolio'.$file;
               }
               if (ref($access{$file}) eq 'HASH') {
                   my %portaccesslog = 
                       &LONCAPA::lonmetadata::process_portfolio_access_data($dbh,
                              $simulate,\%newnames,$url,$fullpath,$access{$file});
                   &portfolio_logging(%portaccesslog);
               }
               my %portmetalog = &LONCAPA::lonmetadata::process_portfolio_metadata($dbh,$simulate,\%newnames,$url,$fullpath,$is_course,$dom,$uname,$group);
               &portfolio_logging(%portmetalog);
           }
     }      }
 }  }
   
 # ------------------------------------------------------------- get .meta files  #
 opendir(RESOURCES,"$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}");  # Rename the tables
 my @homeusers=grep  if (! $simulate) {
           {&ishome("$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}/$_")}      foreach my $key (keys(%oldnames)) {
           grep {!/^\.\.?$/} readdir(RESOURCES);          if (($oldnames{$key} ne '') && ($newnames{$key} ne '')) {
 closedir RESOURCES;              $dbh->do('DROP TABLE IF EXISTS '.$oldnames{$key});
 foreach my $user (@homeusers) {              if (! $dbh->do('RENAME TABLE '.$newnames{$key}.' TO '.$oldnames{$key})) {
     &find("$perlvar{'lonDocRoot'}/res/$perlvar{'lonDefDomain'}/$user");                  &log(0,"MySQL Error Rename: ".$dbh->errstr);
 }                  die $dbh->errstr;
               } else {
 # -- process each file to get metadata and put into search catalog SQL database                  &log(1,"MySQL table rename successful for $key.");
 foreach my $m (@metalist) {              }
     my $ref=&metadata($m);          }
     my $sth=$dbh->prepare('insert into metadata values ('.      }
   delete($ref->{'title'}),  }
   delete($ref->{'author'}).','.  if (! $dbh->disconnect) {
   delete($ref->{'subject'}).','.      &log(0,"MySQL Error Disconnect: ".$dbh->errstr);
   delete($ref->{'url'}).','.      die $dbh->errstr;
   delete($ref->{'keywords'}).','.  }
   delete($ref->{'version'}).','.  ##
   delete($ref->{'notes'}).','.  ## Finished!
   delete($ref->{'abstract'}).','.  &log(0,"==== Searchcat completed ".localtime()." ====");
   delete($ref->{'mime'}).','.  close(LOG);
   delete($ref->{'language'}).','.  
   delete($ref->{'creationdate'}).','.  &write_type_count();
   delete($ref->{'lastrevisiondate'}).','.  &write_copyright_count();
   delete($ref->{'owner'}).','.  
   delete($ref->{'copyright'})  exit 0;
   ')';  
     $sth->execute();  ##
 }  ## Status logging routine.  Inputs: $level, $message
   ## 
 # ----------------------------------------------------------- Clean up database  ## $level 0 should be used for normal output and error messages
 # Need to, perhaps, remove stale SQL database records.  ##
 # ... not yet implemented  ## $message does not need to end with \n.  In the case of errors
   ## the message should contain as much information as possible to
   ## help in diagnosing the problem.
   ##
   sub log {
       my ($level,$message)=@_;
       $level = 0 if (! defined($level));
       if ($verbose >= $level) {
           print LOG $message.$/;
       }
   }
   
   sub portfolio_logging {
       my (%portlog) = @_;
       foreach my $key (keys(%portlog)) {
           if (ref($portlog{$key}) eq 'HASH') {
               foreach my $item (keys(%{$portlog{$key}})) {
                   &log(0,$portlog{$key}{$item});
               }
           }
       }
   }
   
 # --------------------------------------------------- Close database connection  sub descend_tree {
 $dbh->disconnect;      my ($dir,$depth,$alldomusers) = @_;
       if (-d $dir) {
           opendir(DIR,$dir);
           my @contents = grep(!/^\./,readdir(DIR));
           closedir(DIR);
           $depth ++;
           foreach my $item (@contents) {
               if ($depth < 4) {
                   &descend_tree($dir.'/'.$item,$depth,$alldomusers);
               } else {
                   if (-e $dir.'/'.$item.'/file_permissions.db') {
                    
                       $$alldomusers{$item} = '';
                   }
               }       
           }
       } 
   }
   
   ########################################################
   ########################################################
   ###                                                  ###
   ###          File::Find support routines             ###
   ###                                                  ###
   ########################################################
   ########################################################
   ##
   ## &only_meta_files
   ##
   ## Called by File::Find.
   ## Takes a list of files/directories in and returns a list of files/directories
   ## to search.
   sub only_meta_files {
       my @PossibleFiles = @_;
       my @ChosenFiles;
       foreach my $file (@PossibleFiles) {
           if ( ($file =~ /\.meta$/ &&            # Ends in meta
                 $file !~ /\.\d+\.[^\.]+\.meta$/  # is not for a prior version
                ) || (-d $File::Find::dir."/".$file )) { # directories are okay
                    # but we do not want /. or /..
               push(@ChosenFiles,$file);
           }
       }
       return @ChosenFiles;
   }
   
   ##
   ##
   ## Debugging routines, use these for 'wanted' in the File::Find call
   ##
   sub print_filename {
       my ($file) = $_;
       my $fullfilename = $File::Find::name;
       if ($debug) {
           if (-d $file) {
               &log(5," Got directory ".$fullfilename);
           } else {
               &log(5," Got file ".$fullfilename);
           }
       }
       $_=$file;
   }
   
   sub log_metadata {
       my ($file) = $_;
       my $fullfilename = $File::Find::name;
       return if (-d $fullfilename); # No need to do anything here for directories
       if ($debug) {
           &log(6,$fullfilename);
           my $ref = &metadata($fullfilename);
           if (! defined($ref)) {
               &log(6,"    No data");
               return;
           }
           while (my($key,$value) = each(%$ref)) {
               &log(6,"    ".$key." => ".$value);
           }
           &count_copyright($ref->{'copyright'});
       }
       $_=$file;
   }
   
   ##
   ## process_meta_file
   ##   Called by File::Find. 
   ##   Only input is the filename in $_.  
   sub process_meta_file {
       my ($file) = $_;
       my $filename = $File::Find::name; # full filename
       return if (-d $filename); # No need to do anything here for directories
       #
       &log(3,$filename) if ($debug);
       #
       my $ref = &metadata($filename);
       #
       # $url is the original file url, not the metadata file
       my $target = $filename;
       $target =~ s/\.meta$//;
       my $url='/res/'.&declutter($target);
       &log(3,"    ".$url) if ($debug);
       #
       # Ignore some files based on their metadata
       if ($ref->{'obsolete'}) { 
           &log(3,"obsolete") if ($debug);
           return; 
       }
       &count_copyright($ref->{'copyright'});
       if ($ref->{'copyright'} eq 'private') { 
           &log(3,"private") if ($debug);
           return; 
       }
       #
       # Find the dynamic metadata
       my %dyn;
       if ($url=~ m:/default$:) {
           $url=~ s:/default$:/:;
           &log(3,"Skipping dynamic data") if ($debug);
       } else {
           &log(3,"Retrieving dynamic data") if ($debug);
           %dyn=&get_dynamic_metadata($url);
           &count_type($url);
       }
       &LONCAPA::lonmetadata::getfiledates($ref,$target);
       #
       my %Data = (
                   %$ref,
                   %dyn,
                   'url'=>$url,
                   'version'=>'current');
       if (! $simulate) {
           my ($count,$err) = 
             &LONCAPA::lonmetadata::store_metadata($dbh,$newnames{'metadata'},
                                                   'metadata',\%Data);
           if ($err) {
               &log(0,"MySQL Error Insert: ".$err);
           }
           if ($count < 1) {
               &log(0,"Unable to insert record into MySQL database for $url");
           }
       }
       #
       # Reset $_ before leaving
       $_ = $file;
   }
   
 # ---------------------------------------------------------------- Get metadata  ########################################################
 # significantly altered from subroutine present in lonnet  ########################################################
   ###                                                  ###
   ###  &metadata($uri)                                 ###
   ###   Retrieve metadata for the given file           ###
   ###                                                  ###
   ########################################################
   ########################################################
 sub metadata {  sub metadata {
     my ($uri,$what)=@_;      my ($uri) = @_;
     my %metacache;      my %metacache=();
     $uri=&declutter($uri);      $uri=&declutter($uri);
     my $filename=$uri;      my $filename=$uri;
     $uri=~s/\.meta$//;      $uri=~s/\.meta$//;
     $uri='';      $uri='';
     unless ($metacache{$uri.'keys'}) {      if ($filename !~ /\.meta$/) { 
         unless ($filename=~/\.meta$/) { $filename.='.meta'; }          $filename.='.meta';
  my $metastring=&getfile($perlvar{'lonDocRoot'}.'/res/'.$filename);      }
         my $parser=HTML::TokeParser->new(\$metastring);      my $metastring = 
         my $token;          &LONCAPA::lonmetadata::getfile($Apache::lonnet::perlvar{'lonDocRoot'}.'/res/'.$filename);
         while ($token=$parser->get_token) {      return undef if (! defined($metastring));
            if ($token->[0] eq 'S') {      my $parser=HTML::TokeParser->new(\$metastring);
       my $entry=$token->[1];      my $token;
               my $unikey=$entry;      while ($token=$parser->get_token) {
               if (defined($token->[2]->{'part'})) {           if ($token->[0] eq 'S') {
                  $unikey.='_'.$token->[2]->{'part'};               my $entry=$token->[1];
       }              my $unikey=$entry;
               if (defined($token->[2]->{'name'})) {               if (defined($token->[2]->{'part'})) { 
                  $unikey.='_'.$token->[2]->{'name'};                   $unikey.='_'.$token->[2]->{'part'}; 
       }              }
               if ($metacache{$uri.'keys'}) {              if (defined($token->[2]->{'name'})) { 
                  $metacache{$uri.'keys'}.=','.$unikey;                  $unikey.='_'.$token->[2]->{'name'}; 
               } else {              }
                  $metacache{$uri.'keys'}=$unikey;              if ($metacache{$uri.'keys'}) {
       }                  $metacache{$uri.'keys'}.=','.$unikey;
               map {              } else {
   $metacache{$uri.''.$unikey.'.'.$_}=$token->[2]->{$_};                  $metacache{$uri.'keys'}=$unikey;
               } @{$token->[3]};              }
               unless (              foreach ( @{$token->[3]}) {
                  $metacache{$uri.''.$unikey}=$parser->get_text('/'.$entry)                  $metacache{$uri.''.$unikey.'.'.$_}=$token->[2]->{$_};
       ) { $metacache{$uri.''.$unikey}=              }
       $metacache{$uri.''.$unikey.'.default'};              if (! ($metacache{$uri.''.$unikey}=$parser->get_text('/'.$entry))){
       }                  $metacache{$uri.''.$unikey} = 
           }                      $metacache{$uri.''.$unikey.'.default'};
        }              }
           } # End of ($token->[0] eq 'S')
     }      }
     return \%metacache;      return \%metacache;
 }  }
   
 # ------------------------------------------------------------ Serves up a file  ########################################################
 # returns either the contents of the file or a -1  ########################################################
 sub getfile {  ###                                                  ###
   my $file=shift;  ###    Dynamic Metadata                              ###
   if (! -e $file ) { return -1; };  ###                                                  ###
   my $fh=IO::File->new($file);  ########################################################
   my $a='';  ########################################################
   while (<$fh>) { $a .=$_; }  ##
   return $a  ## Dynamic metadata description (incomplete)
   ##
   ## For a full description of all fields,
   ## see LONCAPA::lonmetadata
   ##
   ##   Field             Type
   ##-----------------------------------------------------------
   ##   count             integer
   ##   course            integer
   ##   course_list       comma separated list of course ids
   ##   avetries          real                                
   ##   avetries_list     comma separated list of real numbers
   ##   stdno             real
   ##   stdno_list        comma separated list of real numbers
   ##   usage             integer   
   ##   usage_list        comma separated list of resources
   ##   goto              scalar
   ##   goto_list         comma separated list of resources
   ##   comefrom          scalar
   ##   comefrom_list     comma separated list of resources
   ##   difficulty        real
   ##   difficulty_list   comma separated list of real numbers
   ##   sequsage          scalar
   ##   sequsage_list     comma separated list of resources
   ##   clear             real
   ##   technical         real
   ##   correct           real
   ##   helpful           real
   ##   depth             real
   ##   comments          html of all the comments made
   ##
   {
   
   my %DynamicData;
   my %Counts;
   
   sub process_dynamic_metadata {
       my ($user,$dom) = @_;
       undef(%DynamicData);
       undef(%Counts);
       #
       my $prodir = &propath($dom,$user);
       #
       # Read in the dynamic metadata
       my %evaldata;
       if (! tie(%evaldata,'GDBM_File',
                 $prodir.'/nohist_resevaldata.db',&GDBM_READER(),0640)) {
           return 0;
       }
       #
       %DynamicData = &LONCAPA::lonmetadata::process_reseval_data(\%evaldata);
       untie(%evaldata);
       $DynamicData{'domain'} = $dom;
       #print('user = '.$user.' domain = '.$dom.$/);
       #
       # Read in the access count data
       &log(7,'Reading access count data') if ($debug);
       my %countdata;
       if (! tie(%countdata,'GDBM_File',
                 $prodir.'/nohist_accesscount.db',&GDBM_READER(),0640)) {
           return 0;
       }
       while (my ($key,$count) = each(%countdata)) {
           next if ($key !~ /^$dom/);
           $key = &unescape($key);
           &log(8,'    Count '.$key.' = '.$count) if ($debug);
           $Counts{$key}=$count;
       }
       untie(%countdata);
       if ($debug) {
           &log(7,scalar(keys(%Counts)).
                " Counts read for ".$user."@".$dom);
           &log(7,scalar(keys(%DynamicData)).
                " Dynamic metadata read for ".$user."@".$dom);
       }
       #
       return 1;
 }  }
   
 # ------------------------------------------------------------- Declutters URLs  sub get_dynamic_metadata {
 sub declutter {      my ($url) = @_;
     my $thisfn=shift;      $url =~ s:^/res/::;
     $thisfn=~s/^$perlvar{'lonDocRoot'}//;      my %data = &LONCAPA::lonmetadata::process_dynamic_metadata($url,
     $thisfn=~s/^\///;                                                                 \%DynamicData);
     $thisfn=~s/^res\///;      # find the count
     return $thisfn;      $data{'count'} = $Counts{$url};
       #
       # Log the dynamic metadata
       if ($debug) {
           while (my($k,$v)=each(%data)) {
               &log(8,"    ".$k." => ".$v);
           }
       }
       return %data;
   }
   
   } # End of %DynamicData and %Counts scope
   
   ########################################################
   ########################################################
   ###                                                  ###
   ###   Counts                                         ###
   ###                                                  ###
   ########################################################
   ########################################################
   {
   
   my %countext;
   
   sub count_type {
       my $file=shift;
       $file=~/\.(\w+)$/;
       my $ext=lc($1);
       $countext{$ext}++;
   }
   
   sub write_type_count {
       open(RESCOUNT,'>/home/httpd/html/lon-status/rescount.txt');
       while (my ($extension,$count) = each(%countext)) {
    print RESCOUNT $extension.'='.$count.'&';
       }
       print RESCOUNT 'time='.time."\n";
       close(RESCOUNT);
   }
   
   } # end of scope for %countext
   
   {
   
   my %copyrights;
   
   sub count_copyright {
       $copyrights{@_[0]}++;
   }
   
   sub write_copyright_count {
       open(COPYCOUNT,'>/home/httpd/html/lon-status/copyrightcount.txt');
       while (my ($copyright,$count) = each(%copyrights)) {
    print COPYCOUNT $copyright.'='.$count.'&';
       }
       print COPYCOUNT 'time='.time."\n";
       close(COPYCOUNT);
 }  }
   
 # --------------------------------------- Is this the home server of an author?  } # end of scope for %copyrights
 # (copied from lond, modification of the return value)  
   ########################################################
   ########################################################
   ###                                                  ###
   ###   Miscellanous Utility Routines                  ###
   ###                                                  ###
   ########################################################
   ########################################################
   ##
   ## &ishome($username)
   ##   Returns 1 if $username is a LON-CAPA author, 0 otherwise
   ##   (copied from lond, modification of the return value)
 sub ishome {  sub ishome {
     my $author=shift;      my $author=shift;
     $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;      $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
Line 160  sub ishome { Line 689  sub ishome {
     }      }
 }  }
   
 # -------------------------------------------- Return path to profile directory  ##
 # (copied from lond)  ## &propath($udom,$uname)
   ##   Returns the path to the users LON-CAPA directory
   ##   (copied from lond)
 sub propath {  sub propath {
     my ($udom,$uname)=@_;      my ($udom,$uname)=@_;
     $udom=~s/\W//g;      $udom=~s/\W//g;
     $uname=~s/\W//g;      $uname=~s/\W//g;
     my $subdir=$uname.'__';      my $subdir=$uname.'__';
     $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;      $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
     my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";      my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
     return $proname;      return $proname;
 }   } 
   
   ##
   ## &declutter($filename)
   ##   Given a filename, returns a url for the filename.
   sub declutter {
       my $thisfn=shift;
       $thisfn=~s/^$Apache::lonnet::perlvar{'lonDocRoot'}//;
       $thisfn=~s/^\///;
       $thisfn=~s/^res\///;
       return $thisfn;
   }
   
   ##
   ## Escape / Unescape special characters
   sub unescape {
       my $str=shift;
       $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
       return $str;
   }
   
   sub escape {
       my $str=shift;
       $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
       return $str;
   }
Removed from v.1.4  
changed lines
  Added in v.1.75

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