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<?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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|
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namespace cebe\markdownparser\block; |
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|
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/** |
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* Adds the headline blocks |
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*/ |
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trait HeadlineTrait |
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{ |
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/** |
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* identify a line as a headline |
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*/ |
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protected function identifyHeadline($line, $lines, $current) |
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{ |
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return ( |
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// heading with # |
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$line[0] === '#' && !preg_match('/^#\d+/', $line) |
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|| |
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// underlined headline |
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!empty($lines[$current + 1]) && |
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(($l = $lines[$current + 1][0]) === '=' || $l === '-') && |
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preg_match('/^(\-+|=+)\s*$/', $lines[$current + 1]) |
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); |
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} |
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|
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/** |
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* Consume lines for a headline |
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*/ |
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protected function consumeHeadline($lines, $current) |
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{ |
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if ($lines[$current][0] === '#') { |
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// ATX headline |
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$level = 1; |
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while (isset($lines[$current][$level]) && $lines[$current][$level] === '#' && $level < 6) { |
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$level++; |
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} |
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$block = [ |
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'headline', |
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'content' => $this->parseInline(trim($lines[$current], "# \t")), |
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'level' => $level, |
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]; |
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return [$block, $current]; |
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} else { |
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// underlined headline |
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$block = [ |
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'headline', |
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'content' => $this->parseInline($lines[$current]), |
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'level' => $lines[$current + 1][0] === '=' ? 1 : 2, |
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]; |
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return [$block, $current + 1]; |
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} |
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} |
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|
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/** |
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* Renders a headline |
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*/ |
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protected function renderHeadline($block) |
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{ |
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$tag = 'h' . $block['level']; |
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return "<$tag>" . $this->renderAbsy($block['content']) . "</$tag>\n"; |
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} |
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|
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abstract protected function parseInline($text); |
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abstract protected function renderAbsy($absy); |
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} |
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|
