75 lines
1.4 KiB
Plaintext
75 lines
1.4 KiB
Plaintext
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#!/usr/bin/env perl
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# Copyright (c) 2009 David Aguilar
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#
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# This is a wrapper around the GIT_EXTERNAL_DIFF-compatible
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# git-difftool-helper script. This script exports
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# GIT_EXTERNAL_DIFF and GIT_PAGER for use by git, and
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# GIT_NO_PROMPT and GIT_MERGE_TOOL for use by git-difftool-helper.
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# Any arguments that are unknown to this script are forwarded to 'git diff'.
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use strict;
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use warnings;
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use Cwd qw(abs_path);
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use File::Basename qw(dirname);
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my $DIR = abs_path(dirname($0));
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sub usage
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{
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print << 'USAGE';
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usage: git difftool [--no-prompt] [--tool=tool] ["git diff" options]
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USAGE
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exit 1;
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}
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sub setup_environment
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{
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$ENV{PATH} = "$DIR:$ENV{PATH}";
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$ENV{GIT_PAGER} = '';
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$ENV{GIT_EXTERNAL_DIFF} = 'git-difftool-helper';
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}
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sub exe
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{
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my $exe = shift;
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return defined $ENV{COMSPEC} ? "$exe.exe" : $exe;
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}
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sub generate_command
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{
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my @command = (exe('git'), 'diff');
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my $skip_next = 0;
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my $idx = -1;
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for my $arg (@ARGV) {
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$idx++;
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if ($skip_next) {
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$skip_next = 0;
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next;
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}
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if ($arg eq '-t' or $arg eq '--tool') {
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usage() if $#ARGV <= $idx;
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$ENV{GIT_MERGE_TOOL} = $ARGV[$idx + 1];
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$skip_next = 1;
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next;
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}
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if ($arg =~ /^--tool=/) {
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$ENV{GIT_MERGE_TOOL} = substr($arg, 7);
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next;
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}
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if ($arg eq '--no-prompt') {
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$ENV{GIT_DIFFTOOL_NO_PROMPT} = 'true';
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next;
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}
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if ($arg eq '-h' or $arg eq '--help') {
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usage();
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}
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push @command, $arg;
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}
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return @command
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}
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setup_environment();
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exec(generate_command());
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