1 | <?php |
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2 | |||
3 | declare(strict_types=1); |
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4 | |||
5 | /* |
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6 | * This file is part of the league/commonmark package. |
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7 | * |
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8 | * (c) Colin O'Dell <[email protected]> |
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9 | * |
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10 | * Original code based on the CommonMark JS reference parser (http://bitly.com/commonmark-js) |
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11 | * - (c) John MacFarlane |
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12 | * |
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13 | * For the full copyright and license information, please view the LICENSE |
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14 | * file that was distributed with this source code. |
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15 | */ |
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16 | |||
17 | namespace League\CommonMark\Extension\SmartPunct; |
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18 | |||
19 | use League\CommonMark\Node\Inline\Text; |
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20 | use League\CommonMark\Parser\Inline\InlineParserInterface; |
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21 | use League\CommonMark\Parser\Inline\InlineParserMatch; |
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22 | use League\CommonMark\Parser\InlineParserContext; |
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23 | |||
24 | final class PunctuationParser implements InlineParserInterface |
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25 | { |
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26 | 51 | public function getMatchDefinition(): InlineParserMatch |
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27 | { |
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28 | 51 | return InlineParserMatch::oneOf('-', '.'); |
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29 | } |
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30 | |||
31 | 36 | public function parse(InlineParserContext $inlineContext): bool |
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32 | { |
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33 | 36 | $char = $inlineContext->getFullMatch(); |
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34 | 36 | $cursor = $inlineContext->getCursor(); |
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35 | |||
36 | // Ellipses |
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37 | 36 | if ($char === '.' && $matched = $cursor->match('/^\\.( ?\\.)\\1/')) { |
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38 | 3 | $inlineContext->getContainer()->appendChild(new Text('…')); |
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39 | |||
40 | 3 | return true; |
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41 | } |
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42 | |||
43 | // Em/En-dashes |
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44 | 36 | if ($char === '-' && $matched = $cursor->match('/^(?<!-)(-{2,})/')) { |
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45 | 6 | $count = \strlen($matched); |
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46 | 6 | $enDash = '–'; |
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47 | 6 | $enCount = 0; |
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48 | 6 | $emDash = '—'; |
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49 | 6 | $emCount = 0; |
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50 | 6 | if ($count % 3 === 0) { // If divisible by 3, use all em dashes |
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51 | 6 | $emCount = (int) ($count / 3); |
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52 | 6 | } elseif ($count % 2 === 0) { // If divisible by 2, use all en dashes |
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53 | 6 | $enCount = (int) ($count / 2); |
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54 | 3 | } elseif ($count % 3 === 2) { // If 2 extra dashes, use en dash for last 2; em dashes for rest |
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55 | 3 | $emCount = (int) (($count - 2) / 3); |
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56 | 3 | $enCount = 1; |
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57 | } else { // Use en dashes for last 4 hyphens; em dashes for rest |
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58 | 3 | $emCount = (int) (($count - 4) / 3); |
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59 | 3 | $enCount = 2; |
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60 | } |
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61 | |||
62 | 6 | $inlineContext->getContainer()->appendChild(new Text( |
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63 | 6 | \str_repeat($emDash, $emCount) . \str_repeat($enDash, $enCount) |
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64 | )); |
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65 | |||
66 | 6 | return true; |
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67 | } |
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68 | |||
69 | 33 | return false; |
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70 | } |
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71 | } |
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72 |