xref: /plugin/commonmark/src/Dokuwiki/Plugin/Commonmark/DWRenderer.php (revision c73f5e4d729e7f2b7f7188b6831080ded2816d88) 
1<?php
2
3/*
4 * This file is part of the clockoon/dokuwiki-commonmark-plugin package.
5 *
6 * (c) Sungbin Jeon <clockoon@gmail.com>
7 *
8 * Original code based on the followings:
9 * - CommonMark JS reference parser (https://bitly.com/commonmark-js) (c) John MacFarlane
10 * - league/commonmark (https://github.com/thephpleague/commonmark) (c) Colin O'Dell <colinodell@gmail.com>
11 *
12 * For the full copyright and license information, please view the LICENSE
13 * file that was distributed with this source code.
14 */
15
16namespace Dokuwiki\Plugin\Commonmark;
17
18use League\CommonMark\Node\Block\AbstractBlock;
19use League\CommonMark\Renderer\NodeRendererInterface;
20use League\CommonMark\Node\Inline\AbstractInline;
21use League\CommonMark\Renderer\ChildNodeRendererInterface;
22use League\CommonMark\Environment\EnvironmentInterface;
23use League\CommonMark\Node\Block\Document;
24use League\CommonMark\Node\Node;
25
26/**
27 * Renders a parsed AST to DW
28 */
29final class DWRenderer implements ChildNodeRendererInterface
30{
31    /**
32     * @var EnvironmentInterface
33     */
34    protected $environment;
35
36    /**
37     * @param EnvironmentInterface $environment
38     */
39    public function __construct(EnvironmentInterface $environment)
40    {
41        $this->environment = $environment;
42    }
43
44    public function getBlockSeparator(): string
45    {
46        return $this->environment->getConfiguration()->get('renderer/block_separator');
47    }
48
49    public function getInnerSeparator(): string
50    {
51        return $this->environment->getConfiguration()->get('renderer/inner_separator');
52    }
53
54    /**
55     * @param string $option
56     * @param mixed  $default
57     *
58     * @return mixed|null
59     */
60    public function getOption(string $option)
61    {
62        return $this->environment->getConfiguration()->get('renderer/' . $option);
63        // Note: function 'get' does not have a parameter 'default' any more, so I removed it.
64    }
65
66    public function renderNodes(iterable $nodes): string
67    {
68        $output = '';
69
70        $isFirstItem = true;
71
72        foreach ($nodes as $node) {
73            if (! $isFirstItem && $node instanceof AbstractBlock) {
74                $output .= $this->getBlockSeparator();
75            }
76
77            $output .= $this->renderNode($node);
78
79            $isFirstItem = false;
80        }
81
82        return $output;
83    }
84
85    public function renderNode(Node $node)
86    {
87        $renderers = $this->environment->getRenderersForClass(\get_class($node));
88
89        foreach ($renderers as $renderer) {
90            \assert($renderer instanceof NodeRendererInterface);
91            if (($result = $renderer->render($node, $this)) !== null) {
92                return $result;
93            }
94        }
95
96        throw new \RuntimeException('Unable to find corresponding renderer for node type ' . \get_class($node));
97
98    }
99
100
101}