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92 lines
2.4 KiB
PHP
92 lines
2.4 KiB
PHP
<?php
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/**
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* Copyright 2013 Splunk, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License"): you may
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* not use this file except in compliance with the License. You may obtain
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* a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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/**
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* Utilities for manipulating SimpleXMLElement objects.
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*
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* @package Splunk
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* @internal
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*/
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class Splunk_XmlUtil
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{
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/**
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* Returns whether the specified XML element exists.
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*
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* @param SimpleXMLElement $xml
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* @return boolean
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*/
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public static function elementExists($xml)
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{
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return $xml->getName() != '';
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}
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/**
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* @param SimpleXMLElement $xml
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* @param string $attributeName
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* @return string|NULL
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*/
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public static function getAttributeValue($xml, $attributeName)
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{
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return (isset($xml->attributes()->$attributeName))
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? (string) $xml->attributes()->$attributeName
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: NULL;
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}
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/**
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* @param SimpleXMLElement $xml
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* @return string
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*/
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public static function getTextContent($xml)
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{
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// HACK: Some versions of PHP 5 can't access the [0] element
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// of a SimpleXMLElement object properly.
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return (string) $xml;
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}
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/**
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* @param SimpleXMLElement $xml
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* @param string $xpathExpr
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* @return string|NULL
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*/
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public static function getTextContentAtXpath($xml, $xpathExpr)
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{
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$matchingElements = $xml->xpath($xpathExpr);
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return (count($matchingElements) == 0)
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? NULL
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: Splunk_XmlUtil::getTextContent($matchingElements[0]);
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}
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/**
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* Returns true if the specified SimpleXMLElement represents a unique
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* element or false if it represents a collection of elements.
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*
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* @param SimpleXMLElement $xml
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* @return bool
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*/
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public static function isSingleElement($xml)
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{
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$count = 0;
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foreach ($xml as $item)
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{
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$count++;
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if ($count >= 2)
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return false;
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}
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return ($count == 1);
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}
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}
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