DiffusionLowLevelGitCommitQuery.php
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	<?php

	final class DiffusionLowLevelGitCommitQuery extends DiffusionLowLevelQuery {

	private $identifier;

	public function withIdentifier($identifier) {
	$this->identifier = $identifier;
	return $this;
	}

	protected function executeQuery() {
	$repository = $this->getRepository();

	// NOTE: %B was introduced somewhat recently in git's history, so pull
	// commit message information with %s and %b instead.

	// Even though we pass --encoding here, git doesn't always succeed, so
	// we try a little harder, since git does tell us what the actual encoding
	// is correctly (unless it doesn't; encoding is sometimes empty).
	list($info) = $repository->execxLocalCommand(
	'log -n 1 --encoding=%s --format=%s %s --',
	'UTF-8',
	implode('%x00', array('%e', '%cn', '%ce', '%an', '%ae', '%s%n%n%b')),
	$this->identifier);

	$parts = explode("\0", $info);
	$encoding = array_shift($parts);

	foreach ($parts as $key => $part) {
	if ($encoding) {
	$part = phutil_utf8_convert($part, 'UTF-8', $encoding);
	}
	$parts[$key] = phutil_utf8ize($part);
	if (!strlen($parts[$key])) {
	$parts[$key] = null;
	}
	}

	return id(new DiffusionCommitRef())
	->setCommitterName($parts[0])
	->setCommitterEmail($parts[1])
	->setAuthorName($parts[2])
	->setAuthorEmail($parts[3])
	->setMessage($parts[4]);
	}

	}