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<?php |
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/** |
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* Created by Andrew Solovov. |
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* User: Andrey |
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* Date: 15.01.2021 |
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* Time: 18:36 |
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* |
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* Project name: markdown |
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* |
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* @author Andrew Solovov <[email protected]> |
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* @copyright 1997-2021 Pan Russian solovov.ru |
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*/ |
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namespace cebe\markdown\block; |
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trait FooterTrait |
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{ |
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protected $footnotes = []; |
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protected $footnoteNum = 1; |
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/** |
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* @param $text |
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* @return string |
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*/ |
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public function parse($text) |
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{ |
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$absy = $this->parseBlocks(explode("\n", $text)); |
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foreach ($absy as $block) { |
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if ($block[0] == 'footnote') { |
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$block['num'] = $this->footnoteNum; |
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$this->footnotes[] = $block; |
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$this->footnoteNum++; |
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} |
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} |
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$markup = parent::parse($text); |
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$markup = $this->applyFooter($markup, $this->footnotes); |
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return $markup; |
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} |
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/** |
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* @param $content |
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* @param $blocks |
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* @return string |
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*/ |
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protected function applyFooter($content, $blocks) |
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{ |
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foreach ($blocks as $block) { |
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$number = $block['num'] . ". "; |
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$link = '<a href="#fnref:' . $block['id'] . '" class="footnote-backref">↑</a>'; |
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$text = $this->renderAbsy($block['content']); |
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$text = $this->renderAbsy($this->parseInline($text)); |
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$text = substr_replace($text, $number, 3, 0); |
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$text = substr_replace($text, $link, -5, 0); |
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$content .= '<footnotes id="fn:' . $block['id'] . '">' . $text . "</footnotes>\n"; |
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} |
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return $content; |
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} |
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/** |
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* Parses a footnote link indicated by `[^`. |
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* @marker [^ |
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* @param $text |
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* @return array |
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*/ |
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View Code Duplication |
protected function parseFootnoteLink($text) |
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{ |
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if (preg_match('/^\[\^(.+?)\]/', $text, $matches)) { |
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return [ |
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['footnoteLink', $matches[1]], |
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strlen($matches[0]) |
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]; |
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} |
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return [['text', $text[0]], 1]; |
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} |
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/** |
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* @param $block |
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* @return string |
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*/ |
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protected function renderFootnoteLink($block) |
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{ |
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$footnoteId = $block[1]; |
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$num = 0; |
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$found = false; |
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foreach ($this->footnotes as $footnote) { |
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$num ++; |
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if ($footnote['id']==$footnoteId) { |
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$found = true; |
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break; |
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} |
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} |
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if (!$found) |
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$num = '?'; |
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$text = htmlspecialchars($block[1], ENT_NOQUOTES | ENT_SUBSTITUTE, 'UTF-8'); |
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return '<sup id="fnref:' . $text . '"><a href="#fn:' . $text . '" class="footnote-ref" rel="footnote">[' . $num . ']</a></sup>'; |
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} |
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/** |
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* identify a line as the beginning of a footnote block |
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* |
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* @param $line |
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* @return false|int |
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*/ |
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protected function identifyFootnoteList($line) |
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{ |
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return preg_match('/^\[\^(.+?)\]:/', $line); |
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} |
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/** |
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* Consume lines for a footnote |
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*/ |
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protected function consumeFootnoteList($lines, $current) |
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{ |
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$id = ''; |
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$content = []; |
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$count = count($lines); |
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for ($i = $current; $i < $count; $i++) { |
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$line = $lines[$i]; |
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if ($id == '') { |
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if (preg_match('/^\[\^(.+?)\]:[ \t]+/', $line, $matches)) { |
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$id = $matches[1]; |
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$str = substr($line, strlen($matches[0])); |
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$content[] = $str; |
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} |
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} else if (strlen(trim($line)) == 0) { |
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break; |
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} else { |
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$content[] = ltrim($line); |
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} |
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} |
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$block = ['footnote', 'id' => $id, 'content' => $this->parseBlocks($content)]; |
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return [$block, $i]; |
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} |
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/** |
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* @param $block |
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* @return string |
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*/ |
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protected function renderFootnote($block) |
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{ |
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return ''; |
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} |
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} |
cebe /
markdown
Loading history...
This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idableprovides a methodequalsIdthat in turn relies on the methodgetId(). If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()as an abstract method to the trait will make sure it is available.