59 lines
1.4 KiB
PHP
59 lines
1.4 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2014 Carsten Brandt
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* @license https://github.com/cebe/markdown/blob/master/LICENSE
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* @link https://github.com/cebe/markdown#readme
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*/
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namespace cebe\markdown\block;
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/**
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* Adds the fenced code blocks
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*
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* automatically included 4 space indented code blocks
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*/
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trait FencedCodeTrait
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{
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use CodeTrait;
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/**
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* identify a line as the beginning of a fenced code block.
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*/
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protected function identifyFencedCode($line)
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{
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return ($line[0] === '`' && strncmp($line, '```', 3) === 0) ||
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($line[0] === '~' && strncmp($line, '~~~', 3) === 0) ||
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(isset($line[3]) && (
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($line[3] === '`' && strncmp(ltrim($line), '```', 3) === 0) ||
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($line[3] === '~' && strncmp(ltrim($line), '~~~', 3) === 0)
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));
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}
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/**
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* Consume lines for a fenced code block
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*/
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protected function consumeFencedCode($lines, $current)
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{
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$line = ltrim($lines[$current]);
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$fence = substr($line, 0, $pos = strrpos($line, $line[0]) + 1);
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$language = rtrim(substr($line, $pos));
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// consume until end fence
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$content = [];
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for ($i = $current + 1, $count = count($lines); $i < $count; $i++) {
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if (($pos = strpos($line = $lines[$i], $fence)) === false || $pos > 3) {
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$content[] = $line;
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} else {
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break;
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}
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}
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$block = [
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'code',
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'content' => implode("\n", $content),
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];
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if (!empty($language)) {
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$block['language'] = $language;
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}
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return [$block, $i];
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}
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}
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