[BACK]Return to londiff.pm CVS log [TXT] [DIR] Up to [LON-CAPA] / loncom / publisher
File:  [LON-CAPA] / loncom / publisher / londiff.pm
Revision 1.17: download - view: text, annotated - select for diffs
Sun May 29 01:46:16 2005 UTC (18 years, 11 months ago) by www
Branches: MAIN
CVS tags: version_2_1_X, version_2_1_3, version_2_1_2, version_2_1_1, version_2_1_0, version_2_0_X, version_2_0_99_1, version_2_0_2, version_2_0_1, version_2_0_0, version_1_99_3, version_1_99_2, version_1_99_1, version_1_99_0, HEAD
Cleanup handler

    1: # The LearningOnline Network with CAPA
    2: # Handler to show differences between file versions
    3: #
    4: # $Id: londiff.pm,v 1.17 2005/05/29 01:46:16 www Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: #
   26: # http://www.lon-capa.org/
   27: #
   28: ###
   29: 
   30: package Apache::londiff;
   31: 
   32: use strict;
   33: use Apache::File;
   34: use File::Copy;
   35: use Algorithm::Diff qw(diff);
   36: use Apache::Constants qw(:common :http :methods);
   37: use Apache::loncacc;
   38: use Apache::lonnet;
   39: use Apache::loncommon();
   40: use Apache::lonlocal;
   41: 
   42: 
   43: sub get_split_file {
   44:     my ($fn,$style)=@_;
   45:     my $f1;
   46:     my @f1;
   47:     if ($style='local') {
   48: 	if (-e $fn) {
   49: 	    my $fh=Apache::File->new($fn);
   50: 	    my $line;	
   51: 	    while($line=<$fh>) {
   52: 		$f1.=$line;
   53: 	    }
   54: 	}
   55:     } elsif ($style eq 'remote') {
   56: 	my $f1=&Apache::lonnet::getfile($fn);
   57:     }
   58:     if ($f1=~/\r/) {
   59: 	@f1=split(/\r/,&Apache::lonnet::getfile($fn));      
   60: 	foreach my $line (@f1) {
   61: 	    $line=~s/\n//g;
   62: 	}
   63:     } else {
   64: 	@f1=split(/\n/,&Apache::lonnet::getfile($fn));      
   65:     }
   66:     return @f1;
   67: }
   68: 
   69: sub handler {
   70: 
   71:   my $r=shift;
   72: 
   73: # Get query string for limited number of parameters
   74: 
   75:    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
   76: 			   ['filename','versiontwo','versionone','filetwo']);
   77: # Get the files
   78: 
   79:   my $cuname=$env{'user.name'};
   80:   my $cudom=$env{'user.domain'};
   81: 
   82:   if ($env{'form.filename'}=~/^\/res\//) {
   83:       ($cudom,$cuname,$env{'form.filename'})=
   84: 	  ($env{'form.filename'}=~/^\/res\/(\w+)\/(\w+)\/(.*)$/);
   85:   } else {
   86:       unless (($cuname,$cudom)=
   87: 	      &Apache::loncacc::constructaccess($env{'form.filename'},
   88: 						$r->dir_config('lonDefDomain'))) {
   89: 	  $r->log_reason($cuname.' at '.$cudom.
   90: 			 ' trying to get diffs file '.$env{'form.filename'}.
   91: 			 '  - not authorized', 
   92: 			 $r->filename); 
   93: 	  return HTTP_NOT_ACCEPTABLE;
   94:       }
   95:   }
   96:   
   97:   my $efn=$env{'form.filename'};
   98: 
   99:   $efn=~s/\/\~(\w+)//g;
  100: 
  101:   my @f1=();
  102:   my @f2=();
  103: 
  104:   &Apache::loncommon::content_type($r,'text/html');
  105:   $r->send_http_header;
  106: 
  107:   $r->print('<html><head><title>LON-CAPA Construction Diffs</title></head>');
  108: 
  109:   $r->print(&Apache::loncommon::bodytag('Resource Differences'));
  110: 
  111:   
  112:   $r->print('<h1>'.($env{'form.filetwo'}?'':&mt('Compare versions of')).
  113: 	    ' <tt>'.$efn.'</tt></h1>');
  114:    
  115:        if (($cuname ne $env{'user.name'}) || ($cudom ne $env{'user.domain'})) {
  116:           $r->print('<h3><font color=red>Co-Author: '.$cuname.' at '.$cudom.
  117:                '</font></h3>');
  118:       }
  119: 
  120: 
  121:  if (&Apache::loncommon::fileembstyle(($efn=~/\.(\w+)$/)) eq 'ssi') {
  122:      $r->print('<p><font color="red">');
  123:      if ($env{'form.versionone'} eq 'priv') {
  124: 	 my $fn='/home/'.$cuname.'/public_html/'.$efn;
  125: 	 @f1=&get_split_file($fn,'local');
  126: 	 $r->print('<b>'.&mt('Construction Space Version').'</b>');
  127:      } else {
  128: 	 my $fn=
  129: 	     '/home/httpd/html//res/'.$cudom.'/'.$cuname.'/';
  130: 	 if ($env{'form.versionone'}) {
  131: 	     my ($main,$suffix)=($efn=~/^(.+)\.(\w+)$/);
  132: 	     $fn.=$main.'.'.$env{'form.versionone'}.'.'.$suffix;
  133: 	     $r->print('<b>'.&mt('Version').' '.$env{'form.versionone'}.'</b>');
  134: 	 } else {
  135: 	     $fn.=$efn;
  136: 	     $r->print('<b>'.&mt('Current Version').'</b>');
  137: 	 }
  138: 	 @f1=&get_split_file($fn,'remote');
  139:      }
  140: 
  141:      $r->print('</font><br />'.&mt('versus').'<br /><font color="green">');
  142: 
  143:      if ($env{'form.filetwo'}) {
  144:          my $efn2=$env{'form.filetwo'};
  145: 	 $efn2=~s/\/\~(\w+)//g;
  146: 	 my $fn='/home/'.$cuname.'/public_html/'.$efn2;
  147: 	 @f2=&get_split_file($fn,'local');
  148: 	 $r->print('<tt>'.$efn2.'</tt>');
  149:      } elsif ($env{'form.versiontwo'} eq 'priv') {
  150: 	 my $fn='/home/'.$cuname.'/public_html/'.$efn;
  151: 	 @f2=&get_split_file($fn,'local');
  152: 	 $r->print('<b>'.&mt('Construction Space Version').'</b>');
  153:      } else {
  154: 	 my $fn=
  155: 	     '/home/httpd/html/res/'.$cudom.'/'.$cuname.'/';
  156: 	 if ($env{'form.versiontwo'}) {
  157: 	     my ($main,$suffix)=($efn=~/^(.+)\.(\w+)$/);
  158: 	     $fn.=$main.'.'.$env{'form.versiontwo'}.'.'.$suffix;
  159: 	     $r->print('<b>'.&mt('Version').' '.$env{'form.versiontwo'}.'</b>');
  160: 	 } else {
  161: 	     $fn.=$efn;
  162: 	     $r->print('<b>'.&mt('Current Version').'</b>');
  163: 	 }
  164: 	 @f2=&get_split_file($fn,'remote');
  165:      }
  166:      $r->print('</font></p>');
  167: # Run diff
  168: 
  169:      my $diffs = diff(\@f1, \@f2);
  170: 
  171: # Start page output
  172: 
  173:      my $chunk;
  174:      my $line;
  175: 
  176:      $r->print('<pre>');
  177: 
  178:      foreach $chunk (@$diffs) {
  179: 	 
  180: 	 foreach $line (@$chunk) {
  181: 	     my ($sign, $lineno, $text) = @$line;
  182: 	     $text=~s/\</\&lt\;/g;
  183: 	     $text=~s/\>/\&gt\;/g;
  184: 	     $lineno=substr($lineno.'        ',0,7);
  185: 	     $r->print('<font color='.(($sign eq '+')?'green':'red').'>'.
  186: 		       $sign.' '.$lineno.' '.$text."</font>\n");
  187: 	 }
  188: 	 $r->print("<hr>\n");
  189:      }
  190:      $r->print('</pre>');
  191:      
  192:  } else {
  193:      $r->print('<h1><font color=red>'.&mt('Binary File').'</font></h1>');
  194:  }
  195:   $r->print('<center><a href="javascript:window.close();">'.&mt('Close This Window').'</a></center></body></html>'); 
  196:   return OK;  
  197: }
  198: 
  199: 
  200: 1;
  201: __END__
  202: 
  203: 
  204: 
  205:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>