1<?php
2
3/*
4 * This file is part of the league/commonmark package.
5 *
6 * (c) Colin O'Dell <colinodell@gmail.com>
7 *
8 * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
9 *  - (c) John MacFarlane
10 *
11 * For the full copyright and license information, please view the LICENSE
12 * file that was distributed with this source code.
13 */
14
15namespace League\CommonMark\Inline\Parser;
16
17use League\CommonMark\Inline\Element\Newline;
18use League\CommonMark\Inline\Element\Text;
19use League\CommonMark\InlineParserContext;
20
21final class NewlineParser implements InlineParserInterface
22{
23    public function getCharacters(): array
24    {
25        return ["\n"];
26    }
27
28    public function parse(InlineParserContext $inlineContext): bool
29    {
30        $inlineContext->getCursor()->advanceBy(1);
31
32        // Check previous inline for trailing spaces
33        $spaces = 0;
34        $lastInline = $inlineContext->getContainer()->lastChild();
35        if ($lastInline instanceof Text) {
36            $trimmed = \rtrim($lastInline->getContent(), ' ');
37            $spaces = \strlen($lastInline->getContent()) - \strlen($trimmed);
38            if ($spaces) {
39                $lastInline->setContent($trimmed);
40            }
41        }
42
43        if ($spaces >= 2) {
44            $inlineContext->getContainer()->appendChild(new Newline(Newline::HARDBREAK));
45        } else {
46            $inlineContext->getContainer()->appendChild(new Newline(Newline::SOFTBREAK));
47        }
48
49        return true;
50    }
51}
52