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Diff for /loncom/cgi/barcode.png between versions 1.2 and 1.9

version 1.2, 2001/08/15 14:03:15 version 1.9, 2002/01/03 14:47:23
Line 1 Line 1
 #!/usr/bin/perl  #!/usr/bin/perl
   
 # The LearningOnline Network with CAPA  # The LearningOnline Network with CAPA
   # barcode.gif - A CGI script that dynamically outputs a barcode.
   #
   # $Id$
   #
   # 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/
   #
 # Scott Harrison  # Scott Harrison
 # YEAR=2001  # YEAR=2001
 # 8/15  # 8/15,9/28,12/11
   #
 # A CGI script that dynamically outputs a barcode.  ###
   
 # I'm using format=Code39.  # I'm using format=Code39.
 # The valid formats are  # The valid formats are
Line 17 Line 43
 use strict;  use strict;
 use GD::Barcode::Code39;  use GD::Barcode::Code39;
   
 map {  $|=1;   # Autoflush after each print/write
   foreach (split(/&/,$ENV{'QUERY_STRING'})) {
     my ($name, $value) = split(/=/,$_);      my ($name, $value) = split(/=/,$_);
     $value =~ tr/+/ /;      $value =~ tr/+/ /;
     $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;      $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
     if ($name eq 'encode') {      if ($name eq 'encode') {
  $ENV{'form.'.$name}=$value;   $ENV{'form.'.$name}=$value;
     }      }
 } (split(/&/,$ENV{'QUERY_STRING'}));  }
   
 # Tell the server we are sending a gif graphic  # Tell the server we are sending a gif graphic
 print <<END;  print <<END;
Line 32  Content-type: image/gif Line 59  Content-type: image/gif
   
 END  END
   
 my $oGdBar=GD::Barcode::Code39->new($ENV{'form.encode'});  unless(defined($ENV{'form.encode'}) and length($ENV{'form.encode'})) {
 warn($GD::Barcode::errStr);      $ENV{'form.encode'}='***ERROR***UNDEFINED***';
   }
   my $text = '*'.uc($ENV{'form.encode'}).'*';
   my $oGdBar=GD::Barcode::Code39->new($text);
   if ($GD::Barcode::errStr or !defined($oGdBar)) {
       warn($GD::Barcode::errStr);
       $oGdBar=GD::Barcode::Code39->new('***ERROR***INVALID***');
   }
 my $bindata=$oGdBar->plot->png; # create barcode image  my $bindata=$oGdBar->plot->png; # create barcode image
 undef $oGdBar;  undef $oGdBar;
 binmode(STDOUT);  binmode(STDOUT);
 open OUT,"|pngtopnm|ppmtogif"; # convert into a gif image  open OUT,"|pngtopnm|ppmtogif 2>/dev/null"; # convert into gif image
 print OUT $bindata; # output image  print OUT $bindata; # output image
 $|=1; # be sure to flush before closing  $|=1; # be sure to flush before closing
 close OUT;  close OUT;
Removed from v.1.2  
changed lines
  Added in v.1.9

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