/script/lib/PHPUnit/Util/XML.php
https://bitbucket.org/renaatdemuynck/chamilo · PHP · 1072 lines · 677 code · 146 blank · 249 comment · 129 complexity · be21ae5699699357ffb73e17cc424573 MD5 · raw file
- <?php
- /**
- * PHPUnit
- *
- * Copyright (c) 2002-2011, Sebastian Bergmann <sebastian@phpunit.de>.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * * Neither the name of Sebastian Bergmann nor the names of his
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * @package PHPUnit
- * @subpackage Util
- * @author Sebastian Bergmann <sebastian@phpunit.de>
- * @copyright 2002-2011 Sebastian Bergmann <sebastian@phpunit.de>
- * @license http://www.opensource.org/licenses/bsd-license.php BSD License
- * @link http://www.phpunit.de/
- * @since File available since Release 3.2.0
- */
-
- /**
- * XML helpers.
- *
- * @package PHPUnit
- * @subpackage Util
- * @author Sebastian Bergmann <sebastian@phpunit.de>
- * @copyright 2002-2011 Sebastian Bergmann <sebastian@phpunit.de>
- * @license http://www.opensource.org/licenses/bsd-license.php BSD License
- * @version Release: 3.5.9
- * @link http://www.phpunit.de/
- * @since Class available since Release 3.2.0
- */
- class PHPUnit_Util_XML
- {
-
- /**
- * @param string $string
- * @return string
- * @author Kore Nordmann <mail@kore-nordmann.de>
- * @since Method available since Release 3.4.6
- */
- public static function prepareString($string)
- {
- return preg_replace('([\\x00-\\x04\\x0b\\x0c\\x0e-\\x1f\\x7f])e', 'sprintf( "&#x%02x;", ord( "\\1" ) )', htmlspecialchars(self :: convertToUtf8($string), ENT_COMPAT, 'UTF-8'));
- }
-
- /**
- * Converts a string to UTF-8 encoding.
- *
- * @param string $string
- * @return string
- * @since Method available since Release 3.2.19
- */
- protected static function convertToUtf8($string)
- {
- if (! self :: isUtf8($string))
- {
- if (function_exists('mb_convert_encoding'))
- {
- $string = mb_convert_encoding($string, 'UTF-8');
- }
- else
- {
- $string = utf8_encode($string);
- }
- }
-
- return $string;
- }
-
- /**
- * Checks a string for UTF-8 encoding.
- *
- * @param string $string
- * @return boolean
- * @since Method available since Release 3.3.0
- */
- protected static function isUtf8($string)
- {
- $length = strlen($string);
-
- for($i = 0; $i < $length; $i ++)
- {
- if (ord($string[$i]) < 0x80)
- {
- $n = 0;
- }
-
- else
- if ((ord($string[$i]) & 0xE0) == 0xC0)
- {
- $n = 1;
- }
-
- else
- if ((ord($string[$i]) & 0xF0) == 0xE0)
- {
- $n = 2;
- }
-
- else
- if ((ord($string[$i]) & 0xF0) == 0xF0)
- {
- $n = 3;
- }
-
- else
- {
- return FALSE;
- }
-
- for($j = 0; $j < $n; $j ++)
- {
- if ((++ $i == $length) || ((ord($string[$i]) & 0xC0) != 0x80))
- {
- return FALSE;
- }
- }
- }
-
- return TRUE;
- }
-
- /**
- * Loads an XML (or HTML) file into a DOMDocument object.
- *
- * @param string $filename
- * @param boolean $isHtml
- * @return DOMDocument
- * @since Method available since Release 3.3.0
- */
- public static function loadFile($filename, $isHtml = FALSE)
- {
- $reporting = error_reporting(0);
- $contents = file_get_contents($filename);
- error_reporting($reporting);
-
- if ($contents === FALSE)
- {
- throw new PHPUnit_Framework_Exception(sprintf('Could not read "%s".', $filename));
- }
-
- return self :: load($contents, $isHtml, $filename);
- }
-
- /**
- * Load an $actual document into a DOMDocument. This is called
- * from the selector assertions.
- *
- * If $actual is already a DOMDocument, it is returned with
- * no changes. Otherwise, $actual is loaded into a new DOMDocument
- * as either HTML or XML, depending on the value of $isHtml.
- *
- * Note: prior to PHPUnit 3.3.0, this method loaded a file and
- * not a string as it currently does. To load a file into a
- * DOMDocument, use loadFile() instead.
- *
- * @param string|DOMDocument $actual
- * @param boolean $isHtml
- * @param string $filename
- * @return DOMDocument
- * @since Method available since Release 3.3.0
- * @author Mike Naberezny <mike@maintainable.com>
- * @author Derek DeVries <derek@maintainable.com>
- */
- public static function load($actual, $isHtml = FALSE, $filename = '')
- {
- if ($actual instanceof DOMDocument)
- {
- return $actual;
- }
-
- $internal = libxml_use_internal_errors(TRUE);
- $reporting = error_reporting(0);
- $dom = new DOMDocument();
-
- if ($isHtml)
- {
- $loaded = $dom->loadHTML($actual);
- }
- else
- {
- $loaded = $dom->loadXML($actual);
- }
-
- libxml_use_internal_errors($internal);
- error_reporting($reporting);
-
- if ($loaded === FALSE)
- {
- $message = '';
-
- foreach (libxml_get_errors() as $error)
- {
- $message .= $error->message;
- }
-
- if ($filename != '')
- {
- throw new PHPUnit_Framework_Exception(sprintf('Could not load "%s".%s',
-
- $filename, $message != '' ? "\n" . $message : ''));
- }
- else
- {
- throw new PHPUnit_Framework_Exception($message);
- }
- }
-
- return $dom;
- }
-
- /**
- *
- *
- * @param DOMNode $node
- * @return string
- * @since Method available since Release 3.4.0
- */
- public static function nodeToText(DOMNode $node)
- {
- if ($node->childNodes->length == 1)
- {
- return $node->nodeValue;
- }
-
- $result = '';
-
- foreach ($node->childNodes as $childNode)
- {
- $result .= $node->ownerDocument->saveXML($childNode);
- }
-
- return $result;
- }
-
- /**
- *
- *
- * @param DOMNode $node
- * @since Method available since Release 3.3.0
- * @author Mattis Stordalen Flister <mattis@xait.no>
- */
- public static function removeCharacterDataNodes(DOMNode $node)
- {
- if ($node->hasChildNodes())
- {
- for($i = $node->childNodes->length - 1; $i >= 0; $i --)
- {
- if (($child = $node->childNodes->item($i)) instanceof DOMCharacterData)
- {
- $node->removeChild($child);
- }
- }
- }
- }
-
- /**
- * "Convert" a DOMElement object into a PHP variable.
- *
- * @param DOMElement $element
- * @return mixed
- * @since Method available since Release 3.4.0
- */
- public static function xmlToVariable(DOMElement $element)
- {
- $variable = NULL;
-
- switch ($element->tagName)
- {
- case 'array' :
- {
- $variable = array();
-
- foreach ($element->getElementsByTagName('element') as $element)
- {
- $value = self :: xmlToVariable($element->childNodes->item(1));
-
- if ($element->hasAttribute('key'))
- {
- $variable[(string) $element->getAttribute('key')] = $value;
- }
- else
- {
- $variable[] = $value;
- }
- }
- }
- break;
-
- case 'object' :
- {
- $className = $element->getAttribute('class');
-
- if ($element->hasChildNodes())
- {
- $arguments = $element->childNodes->item(1)->childNodes;
- $constructorArgs = array();
-
- foreach ($arguments as $argument)
- {
- if ($argument instanceof DOMElement)
- {
- $constructorArgs[] = self :: xmlToVariable($argument);
- }
- }
-
- $class = new ReflectionClass($className);
- $variable = $class->newInstanceArgs($constructorArgs);
- }
- else
- {
- $variable = new $className();
- }
- }
- break;
-
- case 'boolean' :
- {
- $variable = $element->nodeValue == 'true' ? TRUE : FALSE;
- }
- break;
-
- case 'integer' :
- case 'double' :
- case 'string' :
- {
- $variable = $element->nodeValue;
-
- settype($variable, $element->tagName);
- }
- break;
- }
-
- return $variable;
- }
-
- /**
- * Validate list of keys in the associative array.
- *
- * @param array $hash
- * @param array $validKeys
- * @return array
- * @throws InvalidArgumentException
- * @since Method available since Release 3.3.0
- * @author Mike Naberezny <mike@maintainable.com>
- * @author Derek DeVries <derek@maintainable.com>
- */
- public static function assertValidKeys(array $hash, array $validKeys)
- {
- $valids = array();
-
- // Normalize validation keys so that we can use both indexed and
- // associative arrays.
- foreach ($validKeys as $key => $val)
- {
- is_int($key) ? $valids[$val] = NULL : $valids[$key] = $val;
- }
-
- $validKeys = array_keys($valids);
-
- // Check for invalid keys.
- foreach ($hash as $key => $value)
- {
- if (! in_array($key, $validKeys))
- {
- $unknown[] = $key;
- }
- }
-
- if (! empty($unknown))
- {
- throw new InvalidArgumentException('Unknown key(s): ' . implode(', ', $unknown));
- }
-
- // Add default values for any valid keys that are empty.
- foreach ($valids as $key => $value)
- {
- if (! isset($hash[$key]))
- {
- $hash[$key] = $value;
- }
- }
-
- return $hash;
- }
-
- /**
- * Parse a CSS selector into an associative array suitable for
- * use with findNodes().
- *
- * @param string $selector
- * @param mixed $content
- * @return array
- * @since Method available since Release 3.3.0
- * @author Mike Naberezny <mike@maintainable.com>
- * @author Derek DeVries <derek@maintainable.com>
- */
- public static function convertSelectToTag($selector, $content = TRUE)
- {
- $selector = trim(preg_replace("/\s+/", " ", $selector));
-
- // substitute spaces within attribute value
- while (preg_match('/\[[^\]]+"[^"]+\s[^"]+"\]/', $selector))
- {
- $selector = preg_replace('/(\[[^\]]+"[^"]+)\s([^"]+"\])/', "$1__SPACE__$2", $selector);
- }
-
- if (strstr($selector, ' '))
- {
- $elements = explode(' ', $selector);
- }
- else
- {
- $elements = array($selector);
- }
-
- $previousTag = array();
-
- foreach (array_reverse($elements) as $element)
- {
- $element = str_replace('__SPACE__', ' ', $element);
-
- // child selector
- if ($element == '>')
- {
- $previousTag = array('child' => $previousTag['descendant']);
- continue;
- }
-
- $tag = array();
-
- // match element tag
- preg_match("/^([^\.#\[]*)/", $element, $eltMatches);
-
- if (! empty($eltMatches[1]))
- {
- $tag['tag'] = $eltMatches[1];
- }
-
- // match attributes (\[[^\]]*\]*), ids (#[^\.#\[]*),
- // and classes (\.[^\.#\[]*))
- preg_match_all("/(\[[^\]]*\]*|#[^\.#\[]*|\.[^\.#\[]*)/", $element, $matches);
-
- if (! empty($matches[1]))
- {
- $classes = array();
- $attrs = array();
-
- foreach ($matches[1] as $match)
- {
- // id matched
- if (substr($match, 0, 1) == '#')
- {
- $tag['id'] = substr($match, 1);
- }
-
- // class matched
- else
- if (substr($match, 0, 1) == '.')
- {
- $classes[] = substr($match, 1);
- }
-
- // attribute matched
- else
- if (substr($match, 0, 1) == '[' && substr($match, - 1, 1) == ']')
- {
- $attribute = substr($match, 1, strlen($match) - 2);
- $attribute = str_replace('"', '', $attribute);
-
- // match single word
- if (strstr($attribute, '~='))
- {
- list($key, $value) = explode('~=', $attribute);
- $value = "regexp:/.*\b$value\b.*/";
- }
-
- // match substring
- else
- if (strstr($attribute, '*='))
- {
- list($key, $value) = explode('*=', $attribute);
- $value = "regexp:/.*$value.*/";
- }
-
- // exact match
- else
- {
- list($key, $value) = explode('=', $attribute);
- }
-
- $attrs[$key] = $value;
- }
- }
-
- if ($classes)
- {
- $tag['class'] = join(' ', $classes);
- }
-
- if ($attrs)
- {
- $tag['attributes'] = $attrs;
- }
- }
-
- // tag content
- if (is_string($content))
- {
- $tag['content'] = $content;
- }
-
- // determine previous child/descendants
- if (! empty($previousTag['descendant']))
- {
- $tag['descendant'] = $previousTag['descendant'];
- }
-
- else
- if (! empty($previousTag['child']))
- {
- $tag['child'] = $previousTag['child'];
- }
-
- $previousTag = array('descendant' => $tag);
- }
-
- return $tag;
- }
-
- /**
- * Parse an $actual document and return an array of DOMNodes
- * matching the CSS $selector. If an error occurs, it will
- * return FALSE.
- *
- * To only return nodes containing a certain content, give
- * the $content to match as a string. Otherwise, setting
- * $content to TRUE will return all nodes matching $selector.
- *
- * The $actual document may be a DOMDocument or a string
- * containing XML or HTML, identified by $isHtml.
- *
- * @param array $selector
- * @param string $content
- * @param mixed $actual
- * @param boolean $isHtml
- * @return false|array
- * @since Method available since Release 3.3.0
- * @author Mike Naberezny <mike@maintainable.com>
- * @author Derek DeVries <derek@maintainable.com>
- * @author Tobias Schlitt <toby@php.net>
- */
- public static function cssSelect($selector, $content, $actual, $isHtml = TRUE)
- {
- $matcher = self :: convertSelectToTag($selector, $content);
- $dom = self :: load($actual, $isHtml);
- $tags = self :: findNodes($dom, $matcher, $isHtml);
-
- return $tags;
- }
-
- /**
- * Parse out the options from the tag using DOM object tree.
- *
- * @param DOMDocument $dom
- * @param array $options
- * @param boolean $isHtml
- * @return array
- * @since Method available since Release 3.3.0
- * @author Mike Naberezny <mike@maintainable.com>
- * @author Derek DeVries <derek@maintainable.com>
- * @author Tobias Schlitt <toby@php.net>
- */
- public static function findNodes(DOMDocument $dom, array $options, $isHtml = TRUE)
- {
- $valid = array('id', 'class', 'tag', 'content', 'attributes', 'parent', 'child', 'ancestor', 'descendant',
- 'children');
-
- $filtered = array();
- $options = self :: assertValidKeys($options, $valid);
-
- // find the element by id
- if ($options['id'])
- {
- $options['attributes']['id'] = $options['id'];
- }
-
- if ($options['class'])
- {
- $options['attributes']['class'] = $options['class'];
- }
-
- // find the element by a tag type
- if ($options['tag'])
- {
- if ($isHtml)
- {
- $elements = self :: getElementsByCaseInsensitiveTagName($dom, $options['tag']);
- }
- else
- {
- $elements = $dom->getElementsByTagName($options['tag']);
- }
-
- foreach ($elements as $element)
- {
- $nodes[] = $element;
- }
-
- if (empty($nodes))
- {
- return FALSE;
- }
- }
-
- // no tag selected, get them all
- else
- {
- $tags = array('a', 'abbr', 'acronym', 'address', 'area', 'b', 'base', 'bdo', 'big', 'blockquote', 'body',
- 'br', 'button', 'caption', 'cite', 'code', 'col', 'colgroup', 'dd', 'del', 'div', 'dfn', 'dl', 'dt',
- 'em', 'fieldset', 'form', 'frame', 'frameset', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'hr',
- 'html', 'i', 'iframe', 'img', 'input', 'ins', 'kbd', 'label', 'legend', 'li', 'link', 'map', 'meta',
- 'noframes', 'noscript', 'object', 'ol', 'optgroup', 'option', 'p', 'param', 'pre', 'q', 'samp',
- 'script', 'select', 'small', 'span', 'strong', 'style', 'sub', 'sup', 'table', 'tbody', 'td',
- 'textarea', 'tfoot', 'th', 'thead', 'title', 'tr', 'tt', 'ul', 'var');
-
- foreach ($tags as $tag)
- {
- if ($isHtml)
- {
- $elements = self :: getElementsByCaseInsensitiveTagName($dom, $tag);
- }
- else
- {
- $elements = $dom->getElementsByTagName($tag);
- }
-
- foreach ($elements as $element)
- {
- $nodes[] = $element;
- }
- }
-
- if (empty($nodes))
- {
- return FALSE;
- }
- }
-
- // filter by attributes
- if ($options['attributes'])
- {
- foreach ($nodes as $node)
- {
- $invalid = FALSE;
-
- foreach ($options['attributes'] as $name => $value)
- {
- // match by regexp if like "regexp:/foo/i"
- if (preg_match('/^regexp\s*:\s*(.*)/i', $value, $matches))
- {
- if (! preg_match($matches[1], $node->getAttribute($name)))
- {
- $invalid = TRUE;
- }
- }
-
- // class can match only a part
- else
- if ($name == 'class')
- {
- // split to individual classes
- $findClasses = explode(' ', preg_replace("/\s+/", " ", $value));
-
- $allClasses = explode(' ', preg_replace("/\s+/", " ", $node->getAttribute($name)));
-
- // make sure each class given is in the actual node
- foreach ($findClasses as $findClass)
- {
- if (! in_array($findClass, $allClasses))
- {
- $invalid = TRUE;
- }
- }
- }
-
- // match by exact string
- else
- {
- if ($node->getAttribute($name) != $value)
- {
- $invalid = TRUE;
- }
- }
- }
-
- // if every attribute given matched
- if (! $invalid)
- {
- $filtered[] = $node;
- }
- }
-
- $nodes = $filtered;
- $filtered = array();
-
- if (empty($nodes))
- {
- return FALSE;
- }
- }
-
- // filter by content
- if ($options['content'] !== NULL)
- {
- foreach ($nodes as $node)
- {
- $invalid = FALSE;
-
- // match by regexp if like "regexp:/foo/i"
- if (preg_match('/^regexp\s*:\s*(.*)/i', $options['content'], $matches))
- {
- if (! preg_match($matches[1], self :: getNodeText($node)))
- {
- $invalid = TRUE;
- }
- }
-
- // match by exact string
- else
- if (strstr(self :: getNodeText($node), $options['content']) === FALSE)
- {
- $invalid = TRUE;
- }
-
- if (! $invalid)
- {
- $filtered[] = $node;
- }
- }
-
- $nodes = $filtered;
- $filtered = array();
-
- if (empty($nodes))
- {
- return FALSE;
- }
- }
-
- // filter by parent node
- if ($options['parent'])
- {
- $parentNodes = self :: findNodes($dom, $options['parent'], $isHtml);
- $parentNode = isset($parentNodes[0]) ? $parentNodes[0] : NULL;
-
- foreach ($nodes as $node)
- {
- if ($parentNode !== $node->parentNode)
- {
- break;
- }
-
- $filtered[] = $node;
- }
-
- $nodes = $filtered;
- $filtered = array();
-
- if (empty($nodes))
- {
- return FALSE;
- }
- }
-
- // filter by child node
- if ($options['child'])
- {
- $childNodes = self :: findNodes($dom, $options['child'], $isHtml);
- $childNodes = ! empty($childNodes) ? $childNodes : array();
-
- foreach ($nodes as $node)
- {
- foreach ($node->childNodes as $child)
- {
- foreach ($childNodes as $childNode)
- {
- if ($childNode === $child)
- {
- $filtered[] = $node;
- }
- }
- }
- }
-
- $nodes = $filtered;
- $filtered = array();
-
- if (empty($nodes))
- {
- return FALSE;
- }
- }
-
- // filter by ancestor
- if ($options['ancestor'])
- {
- $ancestorNodes = self :: findNodes($dom, $options['ancestor'], $isHtml);
- $ancestorNode = isset($ancestorNodes[0]) ? $ancestorNodes[0] : NULL;
-
- foreach ($nodes as $node)
- {
- $parent = $node->parentNode;
-
- while ($parent->nodeType != XML_HTML_DOCUMENT_NODE)
- {
- if ($parent === $ancestorNode)
- {
- $filtered[] = $node;
- }
-
- $parent = $parent->parentNode;
- }
- }
-
- $nodes = $filtered;
- $filtered = array();
-
- if (empty($nodes))
- {
- return FALSE;
- }
- }
-
- // filter by descendant
- if ($options['descendant'])
- {
- $descendantNodes = self :: findNodes($dom, $options['descendant'], $isHtml);
- $descendantNodes = ! empty($descendantNodes) ? $descendantNodes : array();
-
- foreach ($nodes as $node)
- {
- foreach (self :: getDescendants($node) as $descendant)
- {
- foreach ($descendantNodes as $descendantNode)
- {
- if ($descendantNode === $descendant)
- {
- $filtered[] = $node;
- }
- }
- }
- }
-
- $nodes = $filtered;
- $filtered = array();
-
- if (empty($nodes))
- {
- return FALSE;
- }
- }
-
- // filter by children
- if ($options['children'])
- {
- $validChild = array('count', 'greater_than', 'less_than', 'only');
- $childOptions = self :: assertValidKeys($options['children'], $validChild);
-
- foreach ($nodes as $node)
- {
- $childNodes = $node->childNodes;
-
- foreach ($childNodes as $childNode)
- {
- if ($childNode->nodeType !== XML_CDATA_SECTION_NODE && $childNode->nodeType !== XML_TEXT_NODE)
- {
- $children[] = $childNode;
- }
- }
-
- // we must have children to pass this filter
- if (! empty($children))
- {
- // exact count of children
- if ($childOptions['count'] !== NULL)
- {
- if (count($children) !== $childOptions['count'])
- {
- break;
- }
- }
-
- // range count of children
- else
- if ($childOptions['less_than'] !== NULL && $childOptions['greater_than'] !== NULL)
- {
- if (count($children) >= $childOptions['less_than'] || count($children) <= $childOptions['greater_than'])
- {
- break;
- }
- }
-
- // less than a given count
- else
- if ($childOptions['less_than'] !== NULL)
- {
- if (count($children) >= $childOptions['less_than'])
- {
- break;
- }
- }
-
- // more than a given count
- else
- if ($childOptions['greater_than'] !== NULL)
- {
- if (count($children) <= $childOptions['greater_than'])
- {
- break;
- }
- }
-
- // match each child against a specific tag
- if ($childOptions['only'])
- {
- $onlyNodes = self :: findNodes($dom, $childOptions['only'], $isHtml);
-
- // try to match each child to one of the 'only' nodes
- foreach ($children as $child)
- {
- $matched = FALSE;
-
- foreach ($onlyNodes as $onlyNode)
- {
- if ($onlyNode === $child)
- {
- $matched = TRUE;
- }
- }
-
- if (! $matched)
- {
- break (2);
- }
- }
- }
-
- $filtered[] = $node;
- }
- }
-
- $nodes = $filtered;
- $filtered = array();
-
- if (empty($nodes))
- {
- return;
- }
- }
-
- // return the first node that matches all criteria
- return ! empty($nodes) ? $nodes : array();
- }
-
- /**
- * Recursively get flat array of all descendants of this node.
- *
- * @param DOMNode $node
- * @return array
- * @since Method available since Release 3.3.0
- * @author Mike Naberezny <mike@maintainable.com>
- * @author Derek DeVries <derek@maintainable.com>
- */
- protected static function getDescendants(DOMNode $node)
- {
- $allChildren = array();
- $childNodes = $node->childNodes ? $node->childNodes : array();
-
- foreach ($childNodes as $child)
- {
- if ($child->nodeType === XML_CDATA_SECTION_NODE || $child->nodeType === XML_TEXT_NODE)
- {
- continue;
- }
-
- $children = self :: getDescendants($child);
- $allChildren = array_merge($allChildren, $children, array($child));
- }
-
- return isset($allChildren) ? $allChildren : array();
- }
-
- /**
- * Gets elements by case insensitive tagname.
- *
- * @param DOMDocument $dom
- * @param string $tag
- * @return DOMNodeList
- * @since Method available since Release 3.4.0
- */
- protected static function getElementsByCaseInsensitiveTagName(DOMDocument $dom, $tag)
- {
- $elements = $dom->getElementsByTagName(strtolower($tag));
-
- if ($elements->length == 0)
- {
- $elements = $dom->getElementsByTagName(strtoupper($tag));
- }
-
- return $elements;
- }
-
- /**
- * Get the text value of this node's child text node.
- *
- * @param DOMNode $node
- * @return string
- * @since Method available since Release 3.3.0
- * @author Mike Naberezny <mike@maintainable.com>
- * @author Derek DeVries <derek@maintainable.com>
- */
- protected static function getNodeText(DOMNode $node)
- {
- if (! $node->childNodes instanceof DOMNodeList)
- {
- return '';
- }
-
- $result = '';
-
- foreach ($node->childNodes as $childNode)
- {
- if ($childNode->nodeType === XML_TEXT_NODE)
- {
- $result .= trim($childNode->data) . ' ';
- }
- else
- {
- $result .= self :: getNodeText($childNode);
- }
- }
-
- return str_replace(' ', ' ', $result);
- }
- }