124 lines
4.3 KiB
PHP
124 lines
4.3 KiB
PHP
<?php
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/**
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* This file is part of PHPWord - A pure PHP library for reading and writing
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* word processing documents.
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*
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* PHPWord is free software distributed under the terms of the GNU Lesser
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* General Public License version 3 as published by the Free Software Foundation.
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*
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* For the full copyright and license information, please read the LICENSE
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* file that was distributed with this source code. For the full list of
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* contributors, visit https://github.com/PHPOffice/PHPWord/contributors.
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*
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* @link https://github.com/PHPOffice/PHPWord
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* @copyright 2010-2014 PHPWord contributors
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* @license http://www.gnu.org/licenses/lgpl.txt LGPL version 3
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*/
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namespace PhpOffice\PhpWord\Writer\Word2007\Part;
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use PhpOffice\PhpWord\Exception\Exception;
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use PhpOffice\PhpWord\Shared\XMLWriter;
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/**
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* Word2007 main relationship writer: _rels/.rels
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*
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* @since 0.10.0
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*/
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class Rels extends AbstractPart
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{
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/**
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* Base relationship URL
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*/
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const RELS_BASE = 'http://schemas.openxmlformats.org/';
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/**
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* Write part
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*
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* @return string
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*/
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public function write()
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{
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$xmlRels = array(
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'docProps/core.xml' => 'package/2006/relationships/metadata/core-properties',
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'docProps/app.xml' => 'officeDocument/2006/relationships/extended-properties',
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'word/document.xml' => 'officeDocument/2006/relationships/officeDocument',
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);
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$xmlWriter = $this->getXmlWriter();
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$this->writeRels($xmlWriter, $xmlRels);
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return $xmlWriter->getData();
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}
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/**
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* Write relationships
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*
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* @param \PhpOffice\PhpWord\Shared\XMLWriter $xmlWriter
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* @param null|array $xmlRels
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* @param null|array $mediaRels
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* @param integer $relId
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*/
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protected function writeRels(XMLWriter $xmlWriter, $xmlRels = null, $mediaRels = null, $relId = 1)
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{
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$xmlWriter->startDocument('1.0', 'UTF-8', 'yes');
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$xmlWriter->startElement('Relationships');
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$xmlWriter->writeAttribute('xmlns', self::RELS_BASE . 'package/2006/relationships');
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// XML files relationships
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if (is_array($xmlRels)) {
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foreach ($xmlRels as $target => $type) {
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$this->writeRel($xmlWriter, $relId++, $type, $target);
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}
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}
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// Media relationships
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if (!is_null($mediaRels) && is_array($mediaRels)) {
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$mapping = array('image' => 'image', 'object' => 'oleObject', 'link' => 'hyperlink');
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$targetPaths = array('image' => 'media/', 'object' => 'embeddings/');
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foreach ($mediaRels as $mediaRel) {
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$mediaType = $mediaRel['type'];
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$type = array_key_exists($mediaType, $mapping) ? $mapping[$mediaType] : $mediaType;
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$target = array_key_exists($mediaType, $targetPaths) ? $targetPaths[$mediaType] : '';
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$target .= $mediaRel['target'];
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$targetMode = ($type == 'hyperlink') ? 'External' : '';
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$type = "officeDocument/2006/relationships/{$type}";
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$this->writeRel($xmlWriter, $relId++, $type, $target, $targetMode);
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}
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}
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$xmlWriter->endElement(); // Relationships
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}
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/**
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* Write individual rels entry
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*
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* Format:
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* <Relationship Id="rId..." Type="http://..." Target="....xml" TargetMode="..." />
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*
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* @param \PhpOffice\PhpWord\Shared\XMLWriter $xmlWriter
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* @param int $relId Relationship ID
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* @param string $type Relationship type
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* @param string $target Relationship target
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* @param string $targetMode Relationship target mode
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*/
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private function writeRel(XMLWriter $xmlWriter, $relId, $type, $target, $targetMode = '')
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{
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if ($type != '' && $target != '') {
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if (strpos($relId, 'rId') === false) {
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$relId = 'rId' . $relId;
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}
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$xmlWriter->startElement('Relationship');
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$xmlWriter->writeAttribute('Id', $relId);
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$xmlWriter->writeAttribute('Type', self::RELS_BASE . $type);
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$xmlWriter->writeAttribute('Target', $target);
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if ($targetMode != '') {
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$xmlWriter->writeAttribute('TargetMode', $targetMode);
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}
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$xmlWriter->endElement();
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} else {
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throw new Exception("Invalid parameters passed.");
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}
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}
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}
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