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* jc/color: Add colordiff for git to contrib/colordiff.
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This is "colordiff" (http://colordiff.sourceforge.net/) by Dave | ||
Ewart <davee@sungate.co.uk>, modified specifically for git. |
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#!/usr/bin/perl -w | ||
# | ||
# $Id: colordiff.pl,v 1.4.2.10 2004/01/04 15:02:59 daveewart Exp $ | ||
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######################################################################## | ||
# # | ||
# ColorDiff - a wrapper/replacment for 'diff' producing # | ||
# colourful output # | ||
# # | ||
# Copyright (C)2002-2004 Dave Ewart (davee@sungate.co.uk) # | ||
# # | ||
######################################################################## | ||
# # | ||
# This program 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. # | ||
# # | ||
# This program 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 this program; if not, write to the Free Software # | ||
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. # | ||
# # | ||
######################################################################## | ||
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use strict; | ||
use Getopt::Long qw(:config pass_through); | ||
use IPC::Open2; | ||
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my $app_name = 'colordiff'; | ||
my $version = '1.0.4'; | ||
my $author = 'Dave Ewart'; | ||
my $author_email = 'davee@sungate.co.uk'; | ||
my $app_www = 'http://colordiff.sourceforge.net/'; | ||
my $copyright = '(C)2002-2004'; | ||
my $show_banner = 1; | ||
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# ANSI sequences for colours | ||
my %colour; | ||
$colour{white} = "\033[1;37m"; | ||
$colour{yellow} = "\033[1;33m"; | ||
$colour{green} = "\033[1;32m"; | ||
$colour{blue} = "\033[1;34m"; | ||
$colour{cyan} = "\033[1;36m"; | ||
$colour{red} = "\033[1;31m"; | ||
$colour{magenta} = "\033[1;35m"; | ||
$colour{black} = "\033[1;30m"; | ||
$colour{darkwhite} = "\033[0;37m"; | ||
$colour{darkyellow} = "\033[0;33m"; | ||
$colour{darkgreen} = "\033[0;32m"; | ||
$colour{darkblue} = "\033[0;34m"; | ||
$colour{darkcyan} = "\033[0;36m"; | ||
$colour{darkred} = "\033[0;31m"; | ||
$colour{darkmagenta} = "\033[0;35m"; | ||
$colour{darkblack} = "\033[0;30m"; | ||
$colour{OFF} = "\033[0;0m"; | ||
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# Default colours if /etc/colordiffrc or ~/.colordiffrc do not exist | ||
my $plain_text = $colour{OFF}; | ||
my $file_old = $colour{red}; | ||
my $file_new = $colour{blue}; | ||
my $diff_stuff = $colour{magenta}; | ||
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# Locations for personal and system-wide colour configurations | ||
my $HOME = $ENV{HOME}; | ||
my $etcdir = '/etc'; | ||
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my ($setting, $value); | ||
my @config_files = ("$etcdir/colordiffrc", "$HOME/.colordiffrc"); | ||
my $config_file; | ||
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foreach $config_file (@config_files) { | ||
if (open(COLORDIFFRC, "<$config_file")) { | ||
while (<COLORDIFFRC>) { | ||
chop; | ||
next if (/^#/ || /^$/); | ||
s/\s+//g; | ||
($setting, $value) = split ('='); | ||
if ($setting eq 'banner') { | ||
if ($value eq 'no') { | ||
$show_banner = 0; | ||
} | ||
next; | ||
} | ||
if (!defined $colour{$value}) { | ||
print "Invalid colour specification ($value) in $config_file\n"; | ||
next; | ||
} | ||
if ($setting eq 'plain') { | ||
$plain_text = $colour{$value}; | ||
} | ||
elsif ($setting eq 'oldtext') { | ||
$file_old = $colour{$value}; | ||
} | ||
elsif ($setting eq 'newtext') { | ||
$file_new = $colour{$value}; | ||
} | ||
elsif ($setting eq 'diffstuff') { | ||
$diff_stuff = $colour{$value}; | ||
} | ||
else { | ||
print "Unknown option in $etcdir/colordiffrc: $setting\n"; | ||
} | ||
} | ||
close COLORDIFFRC; | ||
} | ||
} | ||
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# colordiff specfic options here. Need to pre-declare if using variables | ||
GetOptions( | ||
"no-banner" => sub { $show_banner = 0 }, | ||
"plain-text=s" => \&set_color, | ||
"file-old=s" => \&set_color, | ||
"file-new=s" => \&set_color, | ||
"diff-stuff=s" => \&set_color | ||
); | ||
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if ($show_banner == 1) { | ||
print STDERR "$app_name $version ($app_www)\n"; | ||
print STDERR "$copyright $author, $author_email\n\n"; | ||
} | ||
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if (defined $ARGV[0]) { | ||
# More reliable way of pulling in arguments | ||
open2(\*INPUTSTREAM, undef, "git", "diff", @ARGV); | ||
} | ||
else { | ||
*INPUTSTREAM = \*STDIN; | ||
} | ||
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my $record; | ||
my $nrecs = 0; | ||
my $inside_file_old = 1; | ||
my $nparents = undef; | ||
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while (<INPUTSTREAM>) { | ||
$nrecs++; | ||
if (/^(\@\@+) -[-+0-9, ]+ \1/) { | ||
print "$diff_stuff"; | ||
$nparents = length($1) - 1; | ||
} | ||
elsif (/^diff -/ || /^index / || | ||
/^old mode / || /^new mode / || | ||
/^deleted file mode / || /^new file mode / || | ||
/^similarity index / || /^dissimilarity index / || | ||
/^copy from / || /^copy to / || | ||
/^rename from / || /^rename to /) { | ||
$nparents = undef; | ||
print "$diff_stuff"; | ||
} | ||
elsif (defined $nparents) { | ||
if ($nparents == 1) { | ||
if (/^\+/) { | ||
print $file_new; | ||
} | ||
elsif (/^-/) { | ||
print $file_old; | ||
} | ||
else { | ||
print $plain_text; | ||
} | ||
} | ||
elsif (/^ {$nparents}/) { | ||
print "$plain_text"; | ||
} | ||
elsif (/^[+ ]{$nparents}/) { | ||
print "$file_new"; | ||
} | ||
elsif (/^[- ]{$nparents}/) { | ||
print "$file_old"; | ||
} | ||
else { | ||
print $plain_text; | ||
} | ||
} | ||
elsif (/^--- / || /^\+\+\+ /) { | ||
print $diff_stuff; | ||
} | ||
else { | ||
print "$plain_text"; | ||
} | ||
s/$/$colour{OFF}/; | ||
print "$_"; | ||
} | ||
close INPUTSTREAM; | ||
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sub set_color { | ||
my ($type, $color) = @_; | ||
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$type =~ s/-/_/; | ||
eval "\$$type = \$colour{$color}"; | ||
} |