--- /dev/null
+<?php
+
+namespace cebe\markdown;
+
+use cebe\markdown\block\TableTrait;
+
+// work around https://github.com/facebook/hhvm/issues/1120
+defined('ENT_HTML401') || define('ENT_HTML401', 0);
+
+/**
+ * Markdown parser for the [markdown extra](http://michelf.ca/projects/php-markdown/extra/) flavor.
+ *
+ * @author Carsten Brandt <mail@cebe.cc>
+ * @license https://github.com/cebe/markdown/blob/master/LICENSE
+ * @link https://github.com/cebe/markdown#readme
+ */
+class MarkdownExtra extends Markdown
+{
+ // include block element parsing using traits
+ use block\TableTrait;
+ use block\FencedCodeTrait;
+
+ // include inline element parsing using traits
+ // TODO
+
+ /**
+ * @var bool whether special attributes on code blocks should be applied on the `<pre>` element.
+ * The default behavior is to put them on the `<code>` element.
+ */
+ public $codeAttributesOnPre = false;
+
+ /**
+ * @inheritDoc
+ */
+ protected $escapeCharacters = [
+ // from Markdown
+ '\\', // backslash
+ '`', // backtick
+ '*', // asterisk
+ '_', // underscore
+ '{', '}', // curly braces
+ '[', ']', // square brackets
+ '(', ')', // parentheses
+ '#', // hash mark
+ '+', // plus sign
+ '-', // minus sign (hyphen)
+ '.', // dot
+ '!', // exclamation mark
+ '<', '>',
+ // added by MarkdownExtra
+ ':', // colon
+ '|', // pipe
+ ];
+
+ private $_specialAttributesRegex = '\{(([#\.][A-z0-9-_]+\s*)+)\}';
+
+ // TODO allow HTML intended 3 spaces
+
+ // TODO add markdown inside HTML blocks
+
+ // TODO implement definition lists
+
+ // TODO implement footnotes
+
+ // TODO implement Abbreviations
+
+
+ // block parsing
+
+ protected function identifyReference($line)
+ {
+ return ($line[0] === ' ' || $line[0] === '[') && preg_match('/^ {0,3}\[(.+?)\]:\s*([^\s]+?)(?:\s+[\'"](.+?)[\'"])?\s*('.$this->_specialAttributesRegex.')?\s*$/', $line);
+ }
+
+ /**
+ * Consume link references
+ */
+ protected function consumeReference($lines, $current)
+ {
+ while (isset($lines[$current]) && preg_match('/^ {0,3}\[(.+?)\]:\s*(.+?)(?:\s+[\(\'"](.+?)[\)\'"])?\s*('.$this->_specialAttributesRegex.')?\s*$/', $lines[$current], $matches)) {
+ $label = strtolower($matches[1]);
+
+ $this->references[$label] = [
+ 'url' => $matches[2],
+ ];
+ if (isset($matches[3])) {
+ $this->references[$label]['title'] = $matches[3];
+ } else {
+ // title may be on the next line
+ if (isset($lines[$current + 1]) && preg_match('/^\s+[\(\'"](.+?)[\)\'"]\s*$/', $lines[$current + 1], $matches)) {
+ $this->references[$label]['title'] = $matches[1];
+ $current++;
+ }
+ }
+ if (isset($matches[5])) {
+ $this->references[$label]['attributes'] = $matches[5];
+ }
+ $current++;
+ }
+ return [false, --$current];
+ }
+
+ /**
+ * Consume lines for a fenced code block
+ */
+ protected function consumeFencedCode($lines, $current)
+ {
+ // consume until ```
+ $block = [
+ 'code',
+ ];
+ $line = rtrim($lines[$current]);
+ if (($pos = strrpos($line, '`')) === false) {
+ $pos = strrpos($line, '~');
+ }
+ $fence = substr($line, 0, $pos + 1);
+ $block['attributes'] = substr($line, $pos);
+ $content = [];
+ for($i = $current + 1, $count = count($lines); $i < $count; $i++) {
+ if (rtrim($line = $lines[$i]) !== $fence) {
+ $content[] = $line;
+ } else {
+ break;
+ }
+ }
+ $block['content'] = implode("\n", $content);
+ return [$block, $i];
+ }
+
+ protected function renderCode($block)
+ {
+ $attributes = $this->renderAttributes($block);
+ return ($this->codeAttributesOnPre ? "<pre$attributes><code>" : "<pre><code$attributes>")
+ . htmlspecialchars($block['content'] . "\n", ENT_NOQUOTES | ENT_SUBSTITUTE, 'UTF-8')
+ . "</code></pre>\n";
+ }
+
+ /**
+ * Renders a headline
+ */
+ protected function renderHeadline($block)
+ {
+ foreach($block['content'] as $i => $element) {
+ if ($element[0] === 'specialAttributes') {
+ unset($block['content'][$i]);
+ $block['attributes'] = $element[1];
+ }
+ }
+ $tag = 'h' . $block['level'];
+ $attributes = $this->renderAttributes($block);
+ return "<$tag$attributes>" . rtrim($this->renderAbsy($block['content']), "# \t") . "</$tag>\n";
+ }
+
+ protected function renderAttributes($block)
+ {
+ $html = [];
+ if (isset($block['attributes'])) {
+ $attributes = preg_split('/\s+/', $block['attributes'], -1, PREG_SPLIT_NO_EMPTY);
+ foreach($attributes as $attribute) {
+ if ($attribute[0] === '#') {
+ $html['id'] = substr($attribute, 1);
+ } else {
+ $html['class'][] = substr($attribute, 1);
+ }
+ }
+ }
+ $result = '';
+ foreach($html as $attr => $value) {
+ if (is_array($value)) {
+ $value = trim(implode(' ', $value));
+ }
+ if (!empty($value)) {
+ $result .= " $attr=\"$value\"";
+ }
+ }
+ return $result;
+ }
+
+
+ // inline parsing
+
+
+ /**
+ * @marker {
+ */
+ protected function parseSpecialAttributes($text)
+ {
+ if (preg_match("~$this->_specialAttributesRegex~", $text, $matches)) {
+ return [['specialAttributes', $matches[1]], strlen($matches[0])];
+ }
+ return [['text', '{'], 1];
+ }
+
+ protected function renderSpecialAttributes($block)
+ {
+ return '{' . $block[1] . '}';
+ }
+
+ protected function parseInline($text)
+ {
+ $elements = parent::parseInline($text);
+ // merge special attribute elements to links and images as they are not part of the final absy later
+ $relatedElement = null;
+ foreach($elements as $i => $element) {
+ if ($element[0] === 'link' || $element[0] === 'image') {
+ $relatedElement = $i;
+ } elseif ($element[0] === 'specialAttributes') {
+ if ($relatedElement !== null) {
+ $elements[$relatedElement]['attributes'] = $element[1];
+ unset($elements[$i]);
+ }
+ $relatedElement = null;
+ } else {
+ $relatedElement = null;
+ }
+ }
+ return $elements;
+ }
+
+ protected function renderLink($block)
+ {
+ if (isset($block['refkey'])) {
+ if (($ref = $this->lookupReference($block['refkey'])) !== false) {
+ $block = array_merge($block, $ref);
+ } else {
+ return $block['orig'];
+ }
+ }
+ $attributes = $this->renderAttributes($block);
+ return '<a href="' . htmlspecialchars($block['url'], ENT_COMPAT | ENT_HTML401, 'UTF-8') . '"'
+ . (empty($block['title']) ? '' : ' title="' . htmlspecialchars($block['title'], ENT_COMPAT | ENT_HTML401 | ENT_SUBSTITUTE, 'UTF-8') . '"')
+ . $attributes . '>' . $this->renderAbsy($block['text']) . '</a>';
+ }
+
+ protected function renderImage($block)
+ {
+ if (isset($block['refkey'])) {
+ if (($ref = $this->lookupReference($block['refkey'])) !== false) {
+ $block = array_merge($block, $ref);
+ } else {
+ return $block['orig'];
+ }
+ }
+ $attributes = $this->renderAttributes($block);
+ return '<img src="' . htmlspecialchars($block['url'], ENT_COMPAT | ENT_HTML401, 'UTF-8') . '"'
+ . ' alt="' . htmlspecialchars($block['text'], ENT_COMPAT | ENT_HTML401 | ENT_SUBSTITUTE, 'UTF-8') . '"'
+ . (empty($block['title']) ? '' : ' title="' . htmlspecialchars($block['title'], ENT_COMPAT | ENT_HTML401 | ENT_SUBSTITUTE, 'UTF-8') . '"')
+ . $attributes . ($this->html5 ? '>' : ' />');
+ }
+}
\ No newline at end of file
projects / yaffs-website / blobdiff