78 lines
2.3 KiB
PHP
78 lines
2.3 KiB
PHP
<?php
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namespace BookStack\Exports;
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use BookStack\App\Model;
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use BookStack\Entities\Queries\EntityQueries;
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use BookStack\References\ModelResolvers\AttachmentModelResolver;
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use BookStack\References\ModelResolvers\BookLinkModelResolver;
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use BookStack\References\ModelResolvers\ChapterLinkModelResolver;
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use BookStack\References\ModelResolvers\CrossLinkModelResolver;
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use BookStack\References\ModelResolvers\ImageModelResolver;
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use BookStack\References\ModelResolvers\PageLinkModelResolver;
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use BookStack\References\ModelResolvers\PagePermalinkModelResolver;
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class ZipReferenceParser
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{
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/**
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* @var CrossLinkModelResolver[]
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*/
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protected array $modelResolvers;
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public function __construct(EntityQueries $queries)
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{
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$this->modelResolvers = [
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new PagePermalinkModelResolver($queries->pages),
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new PageLinkModelResolver($queries->pages),
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new ChapterLinkModelResolver($queries->chapters),
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new BookLinkModelResolver($queries->books),
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new ImageModelResolver(),
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new AttachmentModelResolver(),
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];
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}
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/**
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* Parse and replace references in the given content.
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* @param callable(Model):(string|null) $handler
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*/
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public function parse(string $content, callable $handler): string
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{
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$escapedBase = preg_quote(url('/'), '/');
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$linkRegex = "/({$escapedBase}.*?)[\\t\\n\\f>\"'=?#]/";
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$matches = [];
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preg_match_all($linkRegex, $content, $matches);
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if (count($matches) < 2) {
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return $content;
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}
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foreach ($matches[1] as $link) {
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$model = $this->linkToModel($link);
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if ($model) {
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$result = $handler($model);
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if ($result !== null) {
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$content = str_replace($link, $result, $content);
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}
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}
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}
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return $content;
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}
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/**
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* Attempt to resolve the given link to a model using the instance model resolvers.
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*/
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protected function linkToModel(string $link): ?Model
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{
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foreach ($this->modelResolvers as $resolver) {
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$model = $resolver->resolve($link);
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if (!is_null($model)) {
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return $model;
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}
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}
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return null;
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}
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}
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