SVN to GIT project converter.

gistfile1.txt

#!/usr/bin/env php -q
<?php
/*
 * Modified from an original by Sam Minnee for SilverStripe Ltd
 */

if(empty($_SERVER['argv'][2])) {
	echo "Usage: {$_SERVER['argv'][0]} <svn repo> <dest folder>\n";
	echo "Runs: git svn clone for the repo and then manually pulls.\n";
	exit(1);
}
else {
	$repo = $_SERVER['argv'][1];
	$CLI_repo = escapeshellarg($repo);
	$destFolder = $_SERVER['argv'][2];
	$CLI_destFolder = escapeshellarg($destFolder);
}

echo_passthru("git svn clone $CLI_repo $CLI_destFolder");
chdir("$destFolder/trunk");
$externals = trim(`git svn propget svn:externals`);

if($externals) {
	$externalsList = explode("\n", $externals);
	foreach($externalsList as $external) {
		if(preg_match("/^#/", $external)) {
			continue;
		}
		
		// Sometimes you'll get the revision (-r12345569) in between the source and the location: Lose it:
		$external = preg_replace("#(-r[0-9]+\s)#", '', $external);
		list($externalPath, $externalSource) = preg_split('#\s+#', $external, 2);
		
		// Clean-up $externalPath e.g. "sitemapmodule/"
		$externalPath = rtrim($externalPath, '/');
		$externalSource = trim($externalSource);

		// Log it
		$msg = "Processed svn-external: $externalSource, located at: $externalSource\n";
		$dir = sys_get_temp_dir();
		file_put_contents("$dir/svn2git.log", $msg);

		// Add them
		$CLI_externalPath = escapeshellarg($externalPath);
		$CLI_externalSource = escapeshellarg($externalSource);
		echo_passthru("svn export $CLI_externalSource $CLI_externalPath");
		echo_passthru("git add -f $CLI_externalPath");
		echo_passthru("git commit -m 'Automatic svn-external commit: $externalPath'");   
		
		// Add an assets dir, if it doesn't exist (dev/build will barf otherwise)
		if(!file_exists('./assets')) {
			mkdir('./assets', '0777');
		}
	}
}

function echo_passthru($cmd) {
	echo "\x1b[32;1mEXECUTING:\x1b[37;1m $cmd\x1b[0m\n";
	$returnVar = 0;
	passthru($cmd, $returnVar);
	if($returnVar != 0) {
		echo "\x1b[31;1mERROR: command returned error level $returnVar.\x1b[0m\n\n";
		exit($returnVar);
	}
}