mosbth / Anax-MVC

		);

	protected function stripLinkDefinitions($text) {

	#

	# Strips link definitions from text, stores the URLs and titles in

	# hash references.

	#

		$less_than_tab = $this->tab_width - 1;

		# Link defs are in the form: ^[id]: url "optional title"

		$text = preg_replace_callback('{

							^[ ]{0,'.$less_than_tab.'}\[(.+)\][ ]?:	# id = $1

							  [ ]*

							  \n?				# maybe *one* newline

							  [ ]*

							(?:

							  <(.+?)>			# url = $2

							|

							  (\S+?)			# url = $3

							)

							  [ ]*

							  \n?				# maybe one newline

							  [ ]*

							(?:

								(?<=\s)			# lookbehind for whitespace

								["(]

								(.*?)			# title = $4

								[")]

								[ ]*

							)?	# title is optional

							(?:\n+|\Z)

			}xm',

			array(&$this, '_stripLinkDefinitions_callback'),

			$text);

		return $text;

	}

	protected function _stripLinkDefinitions_callback($matches) {

		$link_id = strtolower($matches[1]);

		$url = $matches[2] == '' ? $matches[3] : $matches[2];

	}

	protected function stripLinkDefinitions($text) {

	#

	# Strips link definitions from text, stores the URLs and titles in

	# hash references.

	#

		$less_than_tab = $this->tab_width - 1;

		# Link defs are in the form: ^[id]: url "optional title"

		$text = preg_replace_callback('{

							^[ ]{0,'.$less_than_tab.'}\[(.+)\][ ]?:	# id = $1

							  [ ]*

							  \n?				# maybe *one* newline

							  [ ]*

							(?:

							  <(.+?)>			# url = $2

							|

							  (\S+?)			# url = $3

							)

							  [ ]*

							  \n?				# maybe one newline

							  [ ]*

							(?:

								(?<=\s)			# lookbehind for whitespace

								["(]

								(.*?)			# title = $4

								[")]

								[ ]*

							)?	# title is optional

					(?:[ ]* '.$this->id_class_attr_catch_re.' )?  # $5 = extra id & class attr

							(?:\n+|\Z)

			}xm',

			array(&$this, '_stripLinkDefinitions_callback'),

			$text);

		return $text;

	}

	protected function _stripLinkDefinitions_callback($matches) {

		$link_id = strtolower($matches[1]);

		$url = $matches[2] == '' ? $matches[3] : $matches[2];

	}

	protected function doFencedCodeBlocks($text) {

	#

	# Adding the fenced code block syntax to regular Markdown:

	#

	# ~~~

	# Code block

	# ~~~

	#

		$less_than_tab = $this->tab_width;

		$text = preg_replace_callback('{

				(?:\n|\A)

				# 1: Opening marker

				(

					(?:~{3,}|`{3,}) # 3 or more tildes/backticks.

				)

				[ ]*

				(?:

					\.?([-_:a-zA-Z0-9]+) # 2: standalone class name

				|

					'.$this->id_class_attr_catch_re.' # 3: Extra attributes

				)?

				[ ]* \n # Whitespace and newline following marker.

				# 4: Content

				(

					(?>

						(?!\1 [ ]* \n)	# Not a closing marker.

						.*\n+

					)+

				)

				# Closing marker.

				\1 [ ]* (?= \n )

			}xm',

			array(&$this, '_doFencedCodeBlocks_callback'), $text);

		return $text;

	}

	protected function _doFencedCodeBlocks_callback($matches) {

		$classname =& $matches[2];

		$attrs     =& $matches[3];

	### Footnotes

	protected function stripFootnotes($text) {

	#

	# Strips link definitions from text, stores the URLs and titles in

	# hash references.

	#

		$less_than_tab = $this->tab_width - 1;

		# Link defs are in the form: [^id]: url "optional title"

		$text = preg_replace_callback('{

			^[ ]{0,'.$less_than_tab.'}\[\^(.+?)\][ ]?:	# note_id = $1

			  [ ]*

			  \n?					# maybe *one* newline

			(						# text = $2 (no blank lines allowed)

				(?:					

					.+				# actual text

				|

					\n				# newlines but 

					(?!\[\^.+?\]:\s)# negative lookahead for footnote marker.

					(?!\n+[ ]{0,3}\S)# ensure line is not blank and followed 

									# by non-indented content

				)*

			)		

			}xm',

			array(&$this, '_stripFootnotes_callback'),

			$text);

		return $text;

	}

	protected function _stripFootnotes_callback($matches) {

		$note_id = $this->fn_id_prefix . $matches[1];

		$this->footnotes[$note_id] = $this->outdent($matches[2]);

	### Abbreviations ###

	protected function stripAbbreviations($text) {

	#

	# Strips abbreviations from text, stores titles in hash references.

	#

		$less_than_tab = $this->tab_width - 1;

		# Link defs are in the form: [id]*: url "optional title"

		$text = preg_replace_callback('{

			^[ ]{0,'.$less_than_tab.'}\*\[(.+?)\][ ]?:	# abbr_id = $1

			(.*)					# text = $2 (no blank lines allowed)	

			}xm',

			array(&$this, '_stripAbbreviations_callback'),

			$text);

		return $text;

	}

	protected function _stripAbbreviations_callback($matches) {

		$abbr_word = $matches[1];

		$abbr_desc = $matches[2];