AlmanacNames.php
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	<?php

	final class AlmanacNames extends Phobject {

	public static function validateServiceOrDeviceName($name) {
	if (strlen($name) < 3) {
	throw new Exception(
	pht(
	'Almanac service and device names must be at least 3 '.
	'characters long.'));
	}

	if (!preg_match('/^[a-z0-9.-]+\z/', $name)) {
	throw new Exception(
	pht(
	'Almanac service and device names may only contain lowercase '.
	'letters, numbers, hyphens, and periods.'));
	}

	if (preg_match('/(^\|\\.)\d+(\z\|\\.)/', $name)) {
	throw new Exception(
	pht(
	'Almanac service and device names may not have any segments '.
	'containing only digits.'));
	}

	if (preg_match('/\.\./', $name)) {
	throw new Exception(
	pht(
	'Almanac service and device names may not contain multiple '.
	'consecutive periods.'));
	}

	if (preg_match('/\\.-\|-\\./', $name)) {
	throw new Exception(
	pht(
	'Amanac service and device names may not contain hyphens adjacent '.
	'to periods.'));
	}

	if (preg_match('/--/', $name)) {
	throw new Exception(
	pht(
	'Almanac service and device names may not contain multiple '.
	'consecutive hyphens.'));
	}

	if (!preg_match('/^[a-z0-9].*[a-z0-9]\z/', $name)) {
	throw new Exception(
	pht(
	'Almanac service and device names must begin and end with a letter '.
	'or number.'));
	}
	}

	}