AlmanacNames.php
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	<?php

	final class AlmanacNames extends Phobject {

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

	if (strlen($name) > 100) {
	throw new Exception(
	pht(
	'Almanac service, device, property and namespace names may not '.
	'be more than 100 characters long.'));
	}

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

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

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

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

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

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

	}