Michelf\MarkdownExtra::_hashHTMLBlocks_inMarkdown()

Complexity

Conditions	24
Paths	61

Size

Total Lines	200
Code Lines	78

Duplication

Lines	27
Ratio	13.5 %

Code Coverage

Tests	65
CRAP Score	24.0494

Importance

Changes

0

<?php
	protected function _hashHTMLBlocks_inMarkdown($text, $indent = 0,
										$enclosing_tag_re = '', $span = false)
	{

		if ($text === '') return array('', '');

		// Regex to check for the presense of newlines around a block tag.
		$newline_before_re = '/(?:^\n?|\n\n)*$/';
		$newline_after_re =
			'{
				^						# Start of text following the tag.
				(?>[ ]*<!--.*?-->)?		# Optional comment.
				[ ]*\n					# Must be followed by newline.
			}xs';

		// Regex to match any tag.
		$block_tag_re =
			'{
				(					# $2: Capture whole tag.
					</?					# Any opening or closing tag.
						(?>				# Tag name.
							' . $this->block_tags_re . '			|
							' . $this->context_block_tags_re . '	|
							' . $this->clean_tags_re . '        	|
							(?!\s)'.$enclosing_tag_re . '
						)
						(?:
							(?=[\s"\'/a-zA-Z0-9])	# Allowed characters after tag name.
							(?>
								".*?"		|	# Double quotes (can contain `>`)
								\'.*?\'   	|	# Single quotes (can contain `>`)
								.+?				# Anything but quotes and `>`.
							)*?
						)?
					>					# End of tag.
				|
					<!--    .*?     -->	# HTML Comment
				|
					<\?.*?\?> | <%.*?%>	# Processing instruction
				|
					<!\[CDATA\[.*?\]\]>	# CData Block
				' . ( !$span ? ' # If not in span.
				|
					# Indented code block
					(?: ^[ ]*\n | ^ | \n[ ]*\n )
					[ ]{' . ($indent + 4) . '}[^\n]* \n
					(?>
						(?: [ ]{' . ($indent + 4) . '}[^\n]* | [ ]* ) \n
					)*
				|
					# Fenced code block marker
					(?<= ^ | \n )
					[ ]{0,' . ($indent + 3) . '}(?:~{3,}|`{3,})
					[ ]*
					(?: \.?[-_:a-zA-Z0-9]+ )? # standalone class name
					[ ]*
					(?: ' . $this->id_class_attr_nocatch_re . ' )? # extra attributes
					[ ]*
					(?= \n )
				' : '' ) . ' # End (if not is span).
				|
					# Code span marker
					# Note, this regex needs to go after backtick fenced
					# code blocks but it should also be kept outside of the
					# "if not in span" condition adding backticks to the parser
					`+
				)
			}xs';


		$depth = 0;		// Current depth inside the tag tree.
		$parsed = "";	// Parsed text that will be returned.

		// Loop through every tag until we find the closing tag of the parent
		// or loop until reaching the end of text if no parent tag specified.
		do {
			// Split the text using the first $tag_match pattern found.
			// Text before  pattern will be first in the array, text after
			// pattern will be at the end, and between will be any catches made
			// by the pattern.
			$parts = preg_split($block_tag_re, $text, 2,
								PREG_SPLIT_DELIM_CAPTURE);

			// If in Markdown span mode, add a empty-string span-level hash
			// after each newline to prevent triggering any block element.
			if ($span) {
				$void = $this->hashPart("", ':');
				$newline = "\n$void";
				$parts[0] = $void . str_replace("\n", $newline, $parts[0]) . $void;
			}

			$parsed .= $parts[0]; // Text before current tag.

			// If end of $text has been reached. Stop loop.
			if (count($parts) < 3) {
				$text = "";
				break;
			}

			$tag  = $parts[1]; // Tag to handle.
			$text = $parts[2]; // Remaining text after current tag.

			// Check for: Fenced code block marker.
			// Note: need to recheck the whole tag to disambiguate backtick
			// fences from code spans
			if (preg_match('{^\n?([ ]{0,' . ($indent + 3) . '})(~{3,}|`{3,})[ ]*(?:\.?[-_:a-zA-Z0-9]+)?[ ]*(?:' . $this->id_class_attr_nocatch_re . ')?[ ]*\n?$}', $tag, $capture)) {
				// Fenced code block marker: find matching end marker.
				$fence_indent = strlen($capture[1]); // use captured indent in re
				$fence_re = $capture[2]; // use captured fence in re
				if (preg_match('{^(?>.*\n)*?[ ]{' . ($fence_indent) . '}' . $fence_re . '[ ]*(?:\n|$)}', $text,

This code seems to be duplicated across your project.

					$matches))
				{
					// End marker found: pass text unchanged until marker.
					$parsed .= $tag . $matches[0];
					$text = substr($text, strlen($matches[0]));
				}
				else {
					// No end marker: just skip it.
					$parsed .= $tag;
				}
			}
			// Check for: Indented code block.
			else if ($tag{0} === "\n" || $tag{0} === " ") {
				// Indented code block: pass it unchanged, will be handled
				// later.
				$parsed .= $tag;
			}
			// Check for: Code span marker
			// Note: need to check this after backtick fenced code blocks
			else if ($tag{0} === "`") {
				// Find corresponding end marker.
				$tag_re = preg_quote($tag);
				if (preg_match('{^(?>.+?|\n(?!\n))*?(?<!`)' . $tag_re . '(?!`)}',

This code seems to be duplicated across your project.

					$text, $matches))
				{
					// End marker found: pass text unchanged until marker.
					$parsed .= $tag . $matches[0];
					$text = substr($text, strlen($matches[0]));
				}
				else {
					// Unmatched marker: just skip it.
					$parsed .= $tag;
				}
			}
			// Check for: Opening Block level tag or
			//            Opening Context Block tag (like ins and del)
			//               used as a block tag (tag is alone on it's line).
			else if (preg_match('{^<(?:' . $this->block_tags_re . ')\b}', $tag) ||
				(	preg_match('{^<(?:' . $this->context_block_tags_re . ')\b}', $tag) &&
					preg_match($newline_before_re, $parsed) &&
					preg_match($newline_after_re, $text)	)
				)
			{
				// Need to parse tag and following text using the HTML parser.
				list($block_text, $text) =
					$this->_hashHTMLBlocks_inHTML($tag . $text, "hashBlock", true);

				// Make sure it stays outside of any paragraph by adding newlines.
				$parsed .= "\n\n$block_text\n\n";
			}
			// Check for: Clean tag (like script, math)
			//            HTML Comments, processing instructions.
			else if (preg_match('{^<(?:' . $this->clean_tags_re . ')\b}', $tag) ||
				$tag{1} === '!' || $tag{1} === '?')
			{
				// Need to parse tag and following text using the HTML parser.
				// (don't check for markdown attribute)
				list($block_text, $text) =
					$this->_hashHTMLBlocks_inHTML($tag . $text, "hashClean", false);

				$parsed .= $block_text;
			}
			// Check for: Tag with same name as enclosing tag.
			else if ($enclosing_tag_re !== '' &&
				// Same name as enclosing tag.
				preg_match('{^</?(?:' . $enclosing_tag_re . ')\b}', $tag))
			{
				// Increase/decrease nested tag count.
				if ($tag{1} === '/') {

This code seems to be duplicated across your project.

					$depth--;
				} else if ($tag{strlen($tag)-2} !== '/') {
					$depth++;
				}

				if ($depth < 0) {
					// Going out of parent element. Clean up and break so we
					// return to the calling function.
					$text = $tag . $text;
					break;
				}

				$parsed .= $tag;
			}
			else {
				$parsed .= $tag;
			}
		} while ($depth >= 0);

		return array($parsed, $text);
	}