79 lines
2.0 KiB
PHP
79 lines
2.0 KiB
PHP
<?php
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/**
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* Created by IntelliJ IDEA.
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* User: onigoetz
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* Date: 06/11/15
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* Time: 20:27.
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*/
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namespace Todaymade\Daux\Format\Base;
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use DOMDocument;
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use Todaymade\Daux\DauxHelper;
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use Todaymade\Daux\Tree\Content;
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use Todaymade\Daux\Tree\Root;
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class EmbedImages
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{
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protected $tree;
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public function __construct(Root $tree)
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{
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$this->tree = $tree;
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}
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public function embed($page, Content $file, $callback)
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{
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return preg_replace_callback(
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"/<img\\s+[^>]*src=['\"]([^\"]*)['\"][^>]*>/",
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function ($matches) use ($file, $callback) {
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if ($result = $this->findImage($matches[1], $matches[0], $file, $callback)) {
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return $result;
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}
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return $matches[0];
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},
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$page
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);
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}
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private function getAttributes($tag)
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{
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$dom = new DOMDocument();
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$dom->loadHTML($tag);
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$img = $dom->getElementsByTagName('img')->item(0);
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$attributes = ['align', 'class', 'title', 'style', 'alt', 'height', 'width'];
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$used = [];
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foreach ($attributes as $attr) {
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if ($img->attributes->getNamedItem($attr)) {
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$used[$attr] = $img->attributes->getNamedItem($attr)->value;
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}
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}
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return $used;
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}
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private function findImage($src, $tag, Content $file, $callback)
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{
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//for protocol relative or http requests : keep the original one
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if (substr($src, 0, strlen('http')) === 'http' || substr($src, 0, strlen('//')) === '//') {
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return $src;
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}
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//Get the path to the file, relative to the root of the documentation
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$url = DauxHelper::getCleanPath(dirname($file->getUrl()) . '/' . $src);
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//Get any file corresponding to the right one
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$file = DauxHelper::getFile($this->tree, $url);
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if ($file === false) {
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return false;
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}
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$result = $callback($src, $this->getAttributes($tag), $file);
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return $result ?: $src;
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}
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}
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