<?php
/**
 * Dump all the files commited in on a particular revision / revision range
 *
 * @author Raja Varma <trajavarma@gmail.com>
 * @param 1 revision number. single -or- range : Mandatory
 * @param 2 Target base directory : Optional
 * @example php svn.export.revision.files.php <revision_number>  [target_directory]
 * @example php svn.export.revision.files.php <min_revision_number:max_revision_number> [target_directory]
 */

	$repoBaseUrl			= 'http://<svn_domain_name.com>/svn';	//The SVN repo URL
	$repoBaseDir			= '/trunk/....';											//Repo Base directory
	$targetBaseDir 		= '/tmp/svndump';											//Directory to which the files to be exported.
	$localCheckoutDir	= '/home/raja/coderepo/';						//Local code base (SVN checkout)

	if($argv[1]) {
		$revNum					= $argv[1];
	}
	else {
		echo "Revision to export missing";
		exit;
	}

	if($argv[2]) {
		$targetBaseDir = $argv[2];
	}

	//Check if the revsion is a range
	if(strpos($revNum, ':')){
		list($revMin, $revMax) = explode(':', $revNum);
	}
	else {
		$revMax = $revNum;
	}

	$targetBaseDir	= rtrim($targetBaseDir, '/') . '/';
	$targetBaseDir	.= str_replace(array(':'), '-', $revNum) . '/';

	$cmdGetFileList = "svn log {$localCheckoutDir} -qv -r{$revNum} | awk '/\//{print $2}'";

	$result = exec($cmdGetFileList, $output);

	sort($output, SORT_STRING);
	echo "\n Files fetched \n\t";
	$output = array_values(array_unique($output));
	print_r($output);

	foreach ($output as $key=>$val) {
		$pathBits		= pathinfo(str_replace($repoBaseDir, '', $val));
		$targetDir	= $targetBaseDir . $pathBits['dirname'];

		if(!is_dir($targetDir)){
			exec("mkdir -p {$targetDir}");
		}
		if(isset($pathBits['extension'])){
			$cmdSvnExport = "svn export -r{$revMax} {$repoBaseUrl}{$val} {$targetDir}/{$pathBits['basename']}";
			exec($cmdSvnExport);
		}
	}