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<?php |
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namespace EWW\Dpf\Services; |
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/* |
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* This file is part of the TYPO3 CMS project. |
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* |
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* It is free software; you can redistribute it and/or modify it under |
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* the terms of the GNU General Public License, either version 2 |
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* of the License, or any later version. |
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* |
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* For the full copyright and license information, please read the |
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* LICENSE.txt file that was distributed with this source code. |
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* |
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* The TYPO3 project - inspiring people to share! |
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*/ |
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/** |
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* Class XPathXMLGenerator |
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* Generates XML elements for a given xpath |
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* Notice: Not all sytax from the original xpath is implemented |
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*/ |
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class XPathXMLGenerator |
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{ |
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protected $regex = '/[a-zA-Z:]+|[<=>]|[@][a-zA-Z][a-zA-Z0-9_\-\:\.]*|\[|\'.*?\'|".*?"|\]|\//'; |
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private $xmlWriter; |
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public function __construct() |
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{ |
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$this->xmlWriter = new \XMLWriter(); |
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$this->xmlWriter->openMemory(); |
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} |
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function loop($xpath) |
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{ |
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// split xpath to find predicates, attributes and texts |
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preg_match_all($this->regex, $xpath, $matches); |
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$i = 0; |
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$predicateStack = 0; |
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$tokenStack = 0; |
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$insidePredicate = false; |
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$predicateString = ""; |
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$loopStack = array(); |
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foreach ($matches[0] as $key => $value) { |
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$firstChar = substr($value, 0, 1); |
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if ($firstChar === '[' || $insidePredicate) { |
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// get corresponding bracket |
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$insidePredicate = true; |
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$predicateString .= $value; |
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if ($value === "]") { |
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$predicateStack--; |
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if ($predicateStack === 0) { |
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// corresponding bracket found |
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$insidePredicate = false; |
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if (!empty($predicateString)) { |
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// recursive call with predicate string |
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$this->loop(trim($predicateString, "[]")); |
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$predicateString = ""; |
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} |
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} |
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} else if ($value === "[") { |
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$predicateStack++; |
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} |
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} else if ($firstChar === '@') { |
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// attribute found |
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$this->startAttribute(substr($value, 1, strlen($value))); |
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$loopStack[] = 'attribute'; |
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} else if ($firstChar === '"' || $firstChar === "'") { |
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// string found |
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$this->setText(trim($value, "'\"")); |
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} else if ($firstChar === ']') { |
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$this->endAttribute(); |
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array_pop($loopStack); |
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$predicateStack--; |
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} else if ($firstChar !== '=' && $firstChar !== '[' && $firstChar !== '@' && $firstChar !== '/') { |
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$this->startToken($value); |
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$loopStack[] = 'token'; |
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if ($predicateStack > 0) { |
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$tokenStack++; |
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} |
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} |
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$i++; |
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} |
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// end all open token and attributes in stacked order |
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foreach (array_reverse($loopStack) as $key => $value) { |
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if ($value === "attribute") { |
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$this->endAttribute(); |
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} else if ($value === "token") { |
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$this->endToken(); |
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} |
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} |
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$this->stack = array(); |
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} |
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/** |
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* @param $value |
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* Starts an XML element |
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* <$value> |
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*/ |
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function startToken($value) |
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{ |
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$this->xmlWriter->startElement($value); |
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} |
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/** |
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* Ends the last token |
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*/ |
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function endToken() |
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{ |
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$this->xmlWriter->endElement(); |
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} |
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/** |
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* @param $value |
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* Adds content to an XML element or attribute |
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* <mods:mods>$value</mods:mods> |
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*/ |
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function setText($value) |
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{ |
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$this->xmlWriter->text($value); |
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} |
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/** |
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* @param $name |
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* @param $value |
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* It adds an attribute with name and value to an XML element |
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* <mods:mods $name=$value> |
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*/ |
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function addAttribute($name, $value) |
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{ |
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$this->xmlWriter->writeAttribute($name, $value); |
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} |
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/** |
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* @param $name |
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* Starts an attribute |
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*/ |
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function startAttribute($name) |
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{ |
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$this->xmlWriter->startAttribute($name); |
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} |
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/** |
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* Ends the last started attribute |
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*/ |
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function endAttribute() |
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{ |
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$this->xmlWriter->endAttribute(); |
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} |
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/** |
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* @return string |
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* Returns the created XML |
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*/ |
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function getXML() |
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{ |
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return $this->xmlWriter->outputMemory(); |
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} |
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} |
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kitodo /
kitodo-publication
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private,protected, orpublic) is generally recommend to communicate to other developers how, and from where this method is intended to be used.