--- loncom/publisher/londiff.pm 2001/05/02 21:35:15 1.2 +++ loncom/publisher/londiff.pm 2007/01/15 18:34:32 1.23 @@ -1,144 +1,206 @@ # The LearningOnline Network with CAPA # Handler to show differences between file versions # -# (Handler to retrieve an old version of a file +# $Id: londiff.pm,v 1.23 2007/01/15 18:34:32 albertel Exp $ # -# (Publication Handler -# -# (TeX Content Handler +# Copyright Michigan State University Board of Trustees # -# 05/29/00,05/30,10/11 Gerd Kortemeyer) +# This file is part of the LearningOnline Network with CAPA (LON-CAPA). # -# 11/28,11/29,11/30,12/01,12/02,12/04,12/23 Gerd Kortemeyer -# 03/23 Guy Albertelli -# 03/24,03/29 Gerd Kortemeyer) +# 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. # -# 03/31,04/03 Gerd Kortemeyer) +# 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. # -# 05/02/01 Gerd Kortemeyer +# 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/ +# +### package Apache::londiff; use strict; use Apache::File; use File::Copy; +use File::Compare; use Algorithm::Diff qw(diff); use Apache::Constants qw(:common :http :methods); +use Apache::loncacc(); +use Apache::lonnet; +use Apache::loncommon(); +use Apache::lonretrieve(); +use Apache::lonlocal; +use LONCAPA(); + +sub get_split_file { + my ($fn,$style)=@_; + my $f1; + my @f1; + if ($style eq 'local') { + if (-e $fn) { + my $fh=Apache::File->new($fn); + my $line; + while($line=<$fh>) { + $f1.=$line; + } + } + } elsif ($style eq 'remote') { + $f1=&Apache::lonnet::getfile($fn); + } + @f1=split(/\r\n|\r|\n/,$f1); + return @f1; +} +sub are_different_files { + my ($fileone,$filetwo)=@_; + return &compare($fileone,$filetwo); +} sub handler { - my $r=shift; - + my $r=shift; # Get query string for limited number of parameters - map { - my ($name, $value) = split(/=/,$_); - $value =~ tr/+/ /; - $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; - if (($name eq 'filename') || ($name eq 'versiontwo') || - ($name eq 'versionone')) { - unless ($ENV{'form.'.$name}) { - $ENV{'form.'.$name}=$value; - } - } - } (split(/&/,$ENV{'QUERY_STRING'})); - + &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, + ['filename','versiontwo', + 'versionone','filetwo']); # Get the files - my @f1=(); - my @f2=(); + my $cuname=$env{'user.name'}; + my $cudom=$env{'user.domain'}; - $r->content_type('text/html'); - $r->send_http_header; + if ($env{'form.filename'}=~/^\/res\//) { + ($cudom,$cuname,$env{'form.filename'})= + ($env{'form.filename'}=~m{^/res/($LONCAPA::domain_re)/($LONCAPA::username_re)/(.*)$}); + } else { + unless (($cuname,$cudom)= + &Apache::loncacc::constructaccess($env{'form.filename'}, + $r->dir_config('lonDefDomain'))) { + $r->log_reason($cuname.':'.$cudom. + ' trying to get diffs file '.$env{'form.filename'}. + ' - not authorized', + $r->filename); + return HTTP_NOT_ACCEPTABLE; + } + } + + my $efn=$env{'form.filename'}; + + $efn=~s{/\~($LONCAPA::username_re)}{}g; + + my @f1=(); + my @f2=(); - $r->print('
');
+ if ($env{'form.versionone'} eq 'priv') {
+ my $fn='/home/'.$cuname.'/public_html/'.$efn;
+ @f1=&get_split_file($fn,'local');
+ $r->print(''.&mt('Construction Space Version').'');
+ } else {
+ my $fn=
+ '/home/httpd/html/res/'.$cudom.'/'.$cuname.'/';
+ if ($env{'form.versionone'}) {
+ my ($main,$suffix,$is_meta)=
+ &Apache::lonretrieve::get_file_info($efn);
+
+ $fn.=($efn =~m|(.*/)[^/]+|)[0];
+ # add on to $fn the path information in $efn
+ $fn.=$main.'.'.$env{'form.versionone'}.'.'.$suffix;
+ $r->print(''.&mt('Version').' '.$env{'form.versionone'}.'');
+ } else {
+ $fn.=$efn;
+ $r->print(''.&mt('Current Version').'');
+ }
+ @f1=&get_split_file($fn,'remote');
+ }
+
+ $r->print('
'.&mt('versus').'
');
+
+ if ($env{'form.filetwo'}) {
+ my $efn2=$env{'form.filetwo'};
+ $efn2=~s{/\~($LONCAPA::username_re)}{}g;
+ my $fn='/home/'.$cuname.'/public_html/'.$efn2;
+ @f2=&get_split_file($fn,'local');
+ $r->print(''.$efn2.'');
+ } elsif ($env{'form.versiontwo'} eq 'priv') {
+ my $fn='/home/'.$cuname.'/public_html/'.$efn;
+ @f2=&get_split_file($fn,'local');
+ $r->print(''.&mt('Construction Space Version').'');
+ } else {
+ my $fn=
+ '/home/httpd/html/res/'.$cudom.'/'.$cuname.'/';
+ if ($env{'form.versiontwo'}) {
+ my ($main,$suffix,$is_meta)=
+ &Apache::lonretrieve::get_file_info($efn);
+ # add on to $fn the path information in $efn
+ $fn.=($efn =~m|(.*/)[^/]+|)[0];
+ $fn.=$main.'.'.$env{'form.versiontwo'}.'.'.$suffix;
+ $r->print(''.&mt('Version').' '.$env{'form.versiontwo'}.'');
+ } else {
+ $fn.=$efn;
+ $r->print(''.&mt('Current Version').'');
+ }
+ @f2=&get_split_file($fn,'remote');
+ }
+ $r->print('
Version '.$ENV{'form.versionone'}. - ' | Version '.$ENV{'form.versiontwo'}.' | '); - foreach $chunk (@$diffs) { - $r->print('
---|---|
'); - my $presign='-'; - foreach $line (@$chunk) { - my ($sign, $lineno, $text) = @$line; - if ($sign ne $presign) { - $r->print(' | '); - $presign=$sign; - } - $text=~s/\\<\;/g; - $text=~s/\>/\>\;/g; - $lineno=substr($lineno.' ',0,8); - $r->print($lineno.' '.$text."\n"); + $r->print(' |