git-mv.perl

#!/usr/bin/perl
#
# Copyright 2005, Ryan Anderson <ryan@michonline.com>
#                 Josef Weidendorfer <Josef.Weidendorfer@gmx.de>
#
# This file is licensed under the GPL v2, or a later version
# at the discretion of Linus Torvalds.


use warnings;
use strict;
use Getopt::Std;

sub usage() {
	print <<EOT;
$0 [-f] [-n] <source> <dest>
$0 [-f] [-k] [-n] <source> ... <dest directory>

In the first form, source must exist and be either a file,
symlink or directory, dest must not exist. It renames source to dest.
In the second form, the last argument has to be an existing
directory; the given sources will be moved into this directory.

Updates the git cache to reflect the change.
Use "git commit" to make the change permanently.

Options:
  -f   Force renaming/moving, even if target exists
  -k   Continue on error by skipping
       not-existing or not revision-controlled source
  -n   Do nothing; show what would happen
EOT
	exit(1);
}

# Sanity checks:
my $GIT_DIR = $ENV{'GIT_DIR'} || ".git";

unless ( -d $GIT_DIR && -d $GIT_DIR . "/objects" && 
	-d $GIT_DIR . "/objects/" && -d $GIT_DIR . "/refs") {
    print "Git repository not found.";
    usage();
}


our ($opt_n, $opt_f, $opt_h, $opt_k, $opt_v);
getopts("hnfkv") || usage;
usage() if $opt_h;
@ARGV >= 1 or usage;

my (@srcArgs, @dstArgs, @srcs, @dsts);
my ($src, $dst, $base, $dstDir);

my $argCount = scalar @ARGV;
if (-d $ARGV[$argCount-1]) {
	$dstDir = $ARGV[$argCount-1];
	# remove any trailing slash
	$dstDir =~ s/\/$//;
	@srcArgs = @ARGV[0..$argCount-2];
	
	foreach $src (@srcArgs) {
		$base = $src;
		$base =~ s/^.*\///;
		$dst = "$dstDir/". $base;
		push @dstArgs, $dst;
	}
}
else {
    if ($argCount != 2) {
	print "Error: moving to directory '"