PhabricatorPhurlURLAliasTransaction.php
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PhabricatorPhurlURLAliasTransaction.php
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	<?php

	final class PhabricatorPhurlURLAliasTransaction
	extends PhabricatorPhurlURLTransactionType {

	const TRANSACTIONTYPE = 'phurl.alias';

	public function generateOldValue($object) {
	return $object->getAlias();
	}

	public function applyInternalEffects($object, $value) {
	$object->setAlias($value);
	}

	public function getTitle() {
	return pht(
	'%s changed the alias from %s to %s.',
	$this->renderAuthor(),
	$this->renderOldValue(),
	$this->renderNewValue());
	}

	public function getTitleForFeed() {
	return pht(
	'%s changed the alias of %s from %s to %s.',
	$this->renderAuthor(),
	$this->renderObject(),
	$this->renderOldValue(),
	$this->renderNewValue());
	}

	public function validateTransactions($object, array $xactions) {
	$errors = array();

	if ($this->isEmptyTextTransaction($object->getAlias(), $xactions)) {
	$errors[] = $this->newRequiredError(
	pht('Phurls must have an alias.'));
	}

	$max_length = $object->getColumnMaximumByteLength('alias');
	foreach ($xactions as $xaction) {
	$new_alias = $xaction->getNewValue();

	// Check length
	$new_length = strlen($new_alias);
	if ($new_length > $max_length) {
	$errors[] = $this->newRequiredError(
	pht('The alias can be no longer than %d characters.', $max_length));
	}

	// Check characters
	if ($xaction->getOldValue() != $xaction->getNewValue()) {
	$debug_alias = new PHUIInvisibleCharacterView($new_alias);
	if (!preg_match('/[a-zA-Z]/', $new_alias)) {
	$errors[] = $this->newRequiredError(
	pht('The alias you provided (%s) must contain at least one '.
	'letter.',
	$debug_alias));
	}
	if (preg_match('/[^a-z0-9]/i', $new_alias)) {
	$errors[] = $this->newRequiredError(
	pht('The alias you provided (%s) may only contain letters and '.
	'numbers.',
	$debug_alias));
	}
	}
	}

	return $errors;
	}

	public function getIcon() {
	return 'fa-compress';
	}

	}

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