loncom/publisher/londiff.pm - view

File: [LON-CAPA] / loncom / publisher / londiff.pm
Revision 1.11: download - view: text, annotated - select for diffs
Mon Feb 3 18:03:53 2003 UTC (21 years, 3 months ago) by harris41
Branches: MAIN
CVS tags: version_1_0_3, version_1_0_2, version_1_0_1, version_1_0_0, version_0_99_5, version_0_99_4, version_0_99_3, version_0_99_2, version_0_99_1, version_0_99_0, conference_2003, HEAD

best wishes to all.

1: # The LearningOnline Network with CAPA 2: # Handler to show differences between file versions 3: # 4: # $Id: londiff.pm,v 1.11 2003/02/03 18:03:53 harris41 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: # (Handler to retrieve an old version of a file 30: # 31: # (Publication Handler 32: # 33: # (TeX Content Handler 34: # 35: # 05/29/00,05/30,10/11 Gerd Kortemeyer) 36: # 37: # 11/28,11/29,11/30,12/01,12/02,12/04,12/23 Gerd Kortemeyer 38: # 03/23 Guy Albertelli 39: # 03/24,03/29 Gerd Kortemeyer) 40: # 41: # 03/31,04/03 Gerd Kortemeyer) 42: # 43: # 05/02/01,05/09 Gerd Kortemeyer 44: # 45: ### 46: 47: package Apache::londiff; 48: 49: use strict; 50: use Apache::File; 51: use File::Copy; 52: use Algorithm::Diff qw(diff); 53: use Apache::Constants qw(:common :http :methods); 54: use Apache::loncacc; 55: use Apache::lonnet(); 56: use Apache::loncommon(); 57: 58: sub handler { 59: 60: my $r=shift; 61: 62: # Get query string for limited number of parameters 63: 64: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, 65: ['filename','versiontwo','versionone']); 66: # Get the files 67: 68: my $cuname=$ENV{'user.name'}; 69: my $cudom=$ENV{'user.domain'}; 70: 71: if ($ENV{'form.filename'}=~/^\/res\//) { 72: ($cudom,$cuname,$ENV{'form.filename'})= 73: ($ENV{'form.filename'}=~/^\/res\/(\w+)\/(\w+)\/(.*)$/); 74: } else { 75: unless (($cuname,$cudom)= 76: &Apache::loncacc::constructaccess($ENV{'form.filename'}, 77: $r->dir_config('lonDefDomain'))) { 78: $r->log_reason($cuname.' at '.$cudom. 79: ' trying to get diffs file '.$ENV{'form.filename'}. 80: ' - not authorized', 81: $r->filename); 82: return HTTP_NOT_ACCEPTABLE; 83: } 84: } 85: 86: my $efn=$ENV{'form.filename'}; 87: 88: $efn=~s/\/\~(\w+)//g; 89: 90: my @f1=(); 91: my @f2=(); 92: 93: $r->content_type('text/html'); 94: $r->send_http_header; 95: 96: $r->print('<html><head><title>LON-CAPA Construction Diffs</title></head>'); 97: 98: $r->print(&Apache::loncommon::bodytag('Resource Differences')); 99: 100: 101: $r->print('<h1>Compare versions of <tt>'.$efn.'</tt></h1>'); 102: 103: if (($cuname ne $ENV{'user.name'}) || ($cudom ne $ENV{'user.domain'})) { 104: $r->print('<h3><font color=red>Co-Author: '.$cuname.' at '.$cudom. 105: '</font></h3>'); 106: } 107: 108: 109: if (&Apache::loncommon::fileembstyle(($efn=~/\.(\w+)$/)) eq 110: 'ssi') { 111: $r->print('<p><font color="red">'); 112: if ($ENV{'form.versionone'} eq 'priv') { 113: my $fn='/home/'.$cuname.'/public_html/'.$efn; 114: if (-e $fn) { 115: my $fh=Apache::File->new($fn); 116: my $line; 117: while($line=<$fh>) { 118: chomp($line); 119: $f1[$#f1+1]=$line; 120: } 121: } 122: $r->print('<b>Construction Space Version</b>'); 123: } else { 124: my $fn= 125: '/home/httpd/html//res/'.$cudom.'/'.$cuname.'/'; 126: if ($ENV{'form.versionone'}) { 127: my ($main,$suffix)=($efn=~/^(.+)\.(\w+)$/); 128: $fn.=$main.'.'.$ENV{'form.versionone'}.'.'.$suffix; 129: $r->print('<b>Version '.$ENV{'form.versionone'}.'</b>'); 130: } else { 131: $fn.=$efn; 132: $r->print('<b>Current Version</b>'); 133: } 134: @f1=split(/\n/,&Apache::lonnet::getfile($fn)); 135: } 136: 137: $r->print('</font><br />versus<br /><font color="green">'); 138: 139: if ($ENV{'form.versiontwo'} eq 'priv') { 140: my $fn='/home/'.$cuname.'/public_html/'.$efn; 141: if (-e $fn) { 142: my $fh=Apache::File->new($fn); 143: my $line; 144: while($line=<$fh>) { 145: chomp($line); 146: $f2[$#f2+1]=$line; 147: } 148: } 149: $r->print('<b>Construction Space Version</b>'); 150: } else { 151: my $fn= 152: '/home/httpd/html/res/'.$cudom.'/'.$cuname.'/'; 153: if ($ENV{'form.versiontwo'}) { 154: my ($main,$suffix)=($efn=~/^(.+)\.(\w+)$/); 155: $fn.=$main.'.'.$ENV{'form.versiontwo'}.'.'.$suffix; 156: $r->print('<b>Version '.$ENV{'form.versiontwo'}.'</b>'); 157: } else { 158: $fn.=$efn; 159: $r->print('<b>Current Version</b>'); 160: } 161: @f2=split(/\n/,&Apache::lonnet::getfile($fn)); 162: } 163: $r->print('</font></p>'); 164: # Run diff 165: 166: my $diffs = diff(\@f1, \@f2); 167: 168: # Start page output 169: 170: my $chunk; 171: my $line; 172: 173: $r->print('<pre>'); 174: 175: foreach $chunk (@$diffs) { 176: 177: foreach $line (@$chunk) { 178: my ($sign, $lineno, $text) = @$line; 179: $text=~s/\</\&lt\;/g; 180: $text=~s/\>/\&gt\;/g; 181: $lineno=substr($lineno.' ',0,7); 182: $r->print('<font color='.(($sign eq '+')?'green':'red').'>'. 183: $sign.' '.$lineno.' '.$text."</font>\n"); 184: } 185: $r->print("<hr>\n"); 186: } 187: $r->print('</pre>'); 188: 189: } else { 190: $r->print('<h1><font color=red>Binary File</font></h1>'); 191: } 192: $r->print('</body></html>'); 193: return OK; 194: } 195: 196: 197: 1; 198: __END__ 199: 200: 201: 202: