chobie's git svn externals

gistfile1.php

#!/usr/local/Cellar/php/5.3.6/bin/php
<?php
/*
	git svn externals
	git svn checkout-externals
	git svn update-externals
	git svn remove-externals

	.externalsにデータはいれておく。
*/


interface GitCommand
{
	public function preExecute();
	public function onExecute();
	public function postExecute();
}

class GitCommandStatus implements GitCommand
{
	public function preExecute()
	{
		system("git status");
		echo PHP_EOL;
		echo "# look into svn:externals..." . PHP_EOL;
	}
	
	public function onExecute()
	{
		system("svn st");
	}
	
	public function postExecute()
	{
	}
}

////////////////////////////////////////////

$argv = $_SERVER['argv'];
array_shift($argv);

$command = "";
$commands = array(
	"status" => "GitCommandStatus",
	);

if(count($argv) == 0) {
	echo "git svn-externals" .PHP_EOL;
	exit;
} else {
	switch($argv['0']) {
		case "st":
		case "status":
			$command = "status";
			break;
		case "up":
		case "update":
			$command = "update";
		case "co":
		case "checkout":
			break;
		case "unlink":
			break;
		case "link":
			break;
		case "reload":
			break;
		default:
			exit;
	}
}

$top_dir = trim(`git rev-parse --show-cdup`);
$path = realpath($top_dir);
chdir($path);

if(!file_exists("{$path}/.git/externals")) {
	mkdir("{$path}/.git/externals");
}

if(!file_exists("{$path}/.git/info/externals")) {
	$externals = trim(`git svn show-externals`);
	file_put_contents("{$path}/.git/info/externals",$externals);
} else {
	$externals = file_get_contents("{$path}/.git/info/externals");
}

$lines = preg_split("/\r?\n/",$externals);
$fp = fopen($path . "/.git/info/exclude","a");

$cn = $commands[$command];
$class = new $cn();

$class->preExecute();

foreach ($lines as $line) {
	$line = trim($line);
	if($line == "" || strpos($line,"#") === 0) {
		continue;
	}
	if (preg_match("/(?<path>.+?)\s(?<url>.+)/",$line,$match)) {
		chdir($path);
		$checkout = $match['path'];
		$url  = $match['url'];
		
		$hash = sha1($url);

		if(!is_link("{$path}/{$checkout}")) {
			echo "svn co {$url} {$path}/.git/externals/{$hash}" . PHP_EOL;
			system("svn co {$url} {$path}/.git/externals/{$hash}");
			system("ln -s {$path}/.git/externals/{$hash} {$path}{$checkout}");
			fwrite($fp, "# from chobi-git" . PHP_EOL);
			fwrite($fp, "{$checkout}" . PHP_EOL);
		} else {
			if($command == "status") {
				chdir("{$path}/.git/externals/{$hash}");
				echo "Performing status on external item at '{$checkout}'" . PHP_EOL;
				$class->onExecute();
				echo PHP_EOL;
			} else if($command == "update") {
				chdir("{$path}/.git/externals/{$hash}");
				echo "updating {$checkout}..." . PHP_EOL;
				system("svn up");
			}
		}
	}
}
fclose($fp);
$class->postExecute();

exit;