xref: /plugin/commonmark/src/Dokuwiki/Plugin/Commonmark/Commonmark.php (revision 7569cca4f9e4d6797e38a2d05d3780d3a1f1125f)
1<?php
2
3namespace Dokuwiki\Plugin\Commonmark;
4
5use League\CommonMark\Environment\Environment;
6use League\CommonMark\Parser\MarkdownParser;
7use Dokuwiki\Plugin\Commonmark\Extension\CommonmarkToDokuwikiExtension;
8use Dokuwiki\Plugin\Commonmark\Extension\FootnoteToDokuwikiExtension;
9use League\CommonMark\Extension\Strikethrough\StrikethroughExtension;
10use Dokuwiki\Plugin\Commonmark\Extension\TableExtension;
11use League\CommonMark\Extension\FrontMatter\FrontMatterExtension;
12use League\CommonMark\Extension\FrontMatter\Output\RenderedContentWithFrontMatter;
13
14class Commonmark {
15    public static function RendtoDW($markdown, $frontmatter_tag = 'off'): string {
16        # create environment
17        $environment = self::createDWEnvironment();
18
19        # create parser
20        $parser = new MarkdownParser($environment);
21        # create Dokuwiki Renderer
22        $DWRenderer = new DWRenderer($environment);
23
24        # separate frontmatter and main text
25        $FMresult = self::ExtractFrontmatter($markdown);
26        $frontmatter = $FMresult->getFrontMatter();
27        $markdownOnly = $FMresult->getContent();
28        //print_r($frontmatter);
29
30        # extract tags only
31        $tags = $frontmatter['tags'];
32        $tagStr = "{{tag>";
33        foreach ($tags as $tag) {
34            $tagStr = $tagStr. "\"". $tag. "\" ";
35        }
36        $tagStr = $tagStr. "}}";
37        //echo $tagStr;
38
39        $document = $parser->parse($markdownOnly);
40        $renderResult = $DWRenderer->renderNode($document);
41
42        if($frontmatter_tag == 'off') {
43            return $renderResult;
44        } elseif($frontmatter_tag == 'upper') {
45            return $tagStr."\n\n".$renderResult;
46        } else {
47            return $renderResult."\n\n".$tagStr;
48        }
49    }
50
51    // Temporary implementation: separate method for frontmatter extraction
52    // Since som parsed frontmatter info must be included in main text, it should be merged
53    public static function ExtractFrontmatter($markdown) {
54        $frontMatterExtension = new FrontMatterExtension();
55        $result = $frontMatterExtension->getFrontMatterParser()->parse($markdown);
56
57        return $result;
58    }
59
60    public static function createDWEnvironment(): Environment {
61        $config = [];
62        $environment = new Environment($config);
63        $environment->addExtension(new CommonMarkToDokuWikiExtension());
64        $environment->addExtension(new FootnoteToDokuwikiExtension());
65        $environment->addExtension(new StrikethroughExtension());
66        $environment->addExtension(new TableExtension());
67        $environment->addExtension(new FrontMatterExtension());
68
69        $environment->mergeConfig([
70            'html_input' => 'strip',
71        ]);
72
73        return $environment;
74    }
75}
76
77?>