commit 29aa7803e6db41f9ebcbd495720a1257d90d30ac
parent 20fcac1bbcb95b5a720fb708084228585de24225
Author: markseu <mark2011@mayberg.se>
Date: Thu, 11 Dec 2014 12:27:55 +0100
Core update (Scandinavian winter remix)
Diffstat:
5 files changed, 3335 insertions(+), 3348 deletions(-)
diff --git a/README.md b/README.md
@@ -1,4 +1,4 @@
-Yellow 0.4.12 [](https://travis-ci.org/markseu/yellowcms)
+Yellow 0.4.13 [](https://travis-ci.org/markseu/yellowcms)
=============
Yellow is for people who make websites. [Visit website](http://datenstrom.se/yellow).
@@ -18,7 +18,7 @@ Yellow is made of files and folders. A flat-file CMS. [Learn more about it](http
Contributing
------------
-Feedback is much appreciated. Let us know about bugs and improvements.
+Feedback is much appreciated. Let us know about problems and ideas.
You can [report issues](https://github.com/markseu/yellowcms/issues) on Github and send [pull requests](https://help.github.com/articles/using-pull-requests/) for improvements.
License
diff --git a/system/core/core-markdownextra.php b/system/core/core-markdownextra.php
@@ -1,3324 +0,0 @@
-<?php
-// Copyright (c) 2013-2014 Datenstrom, http://datenstrom.se
-// This file may be used and distributed under the terms of the public license.
-
-// Markdown extra core plugin
-class YellowMarkdownExtra
-{
- const Version = "0.4.1";
- var $yellow; //access to API
-
- // Handle plugin initialisation
- function onLoad($yellow)
- {
- $this->yellow = $yellow;
- }
-
- // Handle page content parsing of raw format
- function onParseContentText($page, $text)
- {
- $markdown = new YellowMarkdownExtraParser($this->yellow, $page);
- return $markdown->transform($text);
- }
-}
-
-// Markdown extra parser
-class YellowMarkdownExtraParser extends MarkdownExtraParser
-{
- var $yellow; //access to API
- var $page; //access to page
- var $idAttributes; //id attributes
-
- function __construct($yellow, $page)
- {
- $this->yellow = $yellow;
- $this->page = $page;
- $this->idAttributes = array();
- $this->no_markup = $page->parserSafeMode;
- $this->no_entities = $page->parserSafeMode;
- $this->url_filter_func = function($url) use ($yellow, $page)
- {
- return $yellow->toolbox->normaliseLocation($url, $page->base, $page->location,
- $page->parserSafeMode && $page->statusCode==200);
- };
- parent::__construct();
- }
-
- // Transform text
- function transform($text)
- {
- $text = preg_replace("/@pageRead/i", $this->page->get("pageRead"), $text);
- $text = preg_replace("/@pageEdit/i", $this->page->get("pageEdit"), $text);
- $text = preg_replace("/@pageError/i", $this->page->get("pageError"), $text);
- return parent::transform($text);
- }
-
- // Return unique id attribute
- function getIdAttribute($text)
- {
- $text = $this->yellow->toolbox->normaliseName($text, true, false, true);
- $text = trim(preg_replace("/-+/", "-", $text), "-");
- if(is_null($this->idAttributes[$text]))
- {
- $this->idAttributes[$text] = $text;
- $attr = " id=\"$text\"";
- }
- return $attr;
- }
-
- // Handle links
- function doAutoLinks($text)
- {
- $text = preg_replace_callback("/<(\w+:[^\'\">\s]+)>/", array(&$this, "_doAutoLinks_url_callback"), $text);
- $text = preg_replace_callback("/<([\w\-\.]+@[\w\-\.]+)>/", array(&$this, "_doAutoLinks_email_callback"), $text);
- $text = preg_replace_callback("/\[(\w+)\s+(.*?)\]/", array(&$this, "_doAutoLinks_shortcut_callback"), $text);
- $text = preg_replace_callback("/\[\-\-(.*?)\-\-\]/", array(&$this, "_doAutoLinks_comment_callback"), $text);
- $text = preg_replace_callback("/((http|https|ftp):\/\/\S+[^\'\"\,\.\;\:\s]+)/", array(&$this, "_doAutoLinks_url_callback"), $text);
- $text = preg_replace_callback("/([\w\-\.]+@[\w\-\.]+\.[\w]{2,4})/", array(&$this, "_doAutoLinks_email_callback"), $text);
- return $text;
- }
-
- // Handle shortcuts
- function _doAutoLinks_shortcut_callback($matches)
- {
- $text = preg_replace("/\s+/s", " ", $matches[2]);
- $output = $this->page->parseType($matches[1], $text, true);
- if(is_null($output)) $output = htmlspecialchars($matches[0], ENT_NOQUOTES);
- return $this->hashBlock($output);
- }
-
- // Handle comments
- function _doAutoLinks_comment_callback($matches)
- {
- $text = $matches[1];
- $output = "<!--".htmlspecialchars($text, ENT_NOQUOTES)."-->";
- if($text[0] == '-') $output = "";
- return $this->hashBlock($output);
- }
-
- // Handle fenced code blocks
- function _doFencedCodeBlocks_callback($matches)
- {
- $text = $matches[4];
- $output = $this->page->parseType($matches[2], $text, false);
- if(is_null($output))
- {
- $attr = $this->doExtraAttributes("pre", $dummy =& $matches[3]);
- $output = "<pre$attr><code>".htmlspecialchars($text, ENT_NOQUOTES)."</code></pre>";
- }
- return "\n\n".$this->hashBlock($output)."\n\n";
- }
-
- // Handle headers, text style
- function _doHeaders_callback_setext($matches)
- {
- if ($matches[3] == '-' && preg_match('{^- }', $matches[1])) return $matches[0];
- $text = $matches[1];
- $level = $matches[3]{0} == '=' ? 1 : 2;
- $attr = $this->doExtraAttributes("h$level", $dummy =& $matches[2]);
- if(empty($attr) && $level==2) $attr = $this->getIdAttribute($text);
- $output = "<h$level$attr>".$this->runSpanGamut($text)."</h$level>";
- return "\n".$this->hashBlock($output)."\n\n";
- }
-
- // Handle headers, atx style
- function _doHeaders_callback_atx($matches)
- {
- $text = $matches[2];
- $level = strlen($matches[1]);
- $attr = $this->doExtraAttributes("h$level", $dummy =& $matches[3]);
- if(empty($attr) && $level==2) $attr = $this->getIdAttribute($text);
- $output = "<h$level$attr>".$this->runSpanGamut($text)."</h$level>";
- return "\n".$this->hashBlock($output)."\n\n";
- }
-
- // Handle inline links
- function _doAnchors_inline_callback($matches)
- {
- $url = $matches[3]=="" ? $matches[4] : $matches[3];
- $text = $matches[2];
- $title = $matches[7];
- $attr = $this->doExtraAttributes("a", $dummy =& $matches[8]);
- $output = "<a href=\"".$this->encodeURLAttribute($url)."\"";
- if(!empty($title)) $output .= " title=\"".$this->encodeAttribute($title)."\"";
- $output .= $attr;
- $output .= ">".$this->runSpanGamut($text)."</a>";
- return $this->hashPart($output);
- }
-
- // Handle inline images
- function _doImages_inline_callback($matches)
- {
- $width = $height = 0;
- $src = $matches[3]=="" ? $matches[4] : $matches[3];
- if(!preg_match("/^\w+:/", $src))
- {
- list($width, $height) = $this->yellow->toolbox->detectImageInfo($this->yellow->config->get("imageDir").$src);
- $src = $this->yellow->config->get("serverBase").$this->yellow->config->get("imageLocation").$src;
- }
- $alt = $matches[2];
- $title = $matches[7]=="" ? $matches[2] : $matches[7];
- $attr = $this->doExtraAttributes("img", $dummy =& $matches[8]);
- $output = "<img src=\"".$this->encodeURLAttribute($src)."\"";
- if($width && $height) $output .= " width=\"$width\" height=\"$height\"";
- if(!empty($alt)) $output .= " alt=\"".$this->encodeAttribute($alt)."\"";
- if(!empty($title)) $output .= " title=\"".$this->encodeAttribute($title)."\"";
- $output .= $attr;
- $output .= $this->empty_element_suffix;
- return $this->hashPart($output);
- }
-}
-
-// PHP Markdown Lib
-// Copyright (c) 2004-2013 Michel Fortin
-// <http://michelf.com/projects/php-markdown/>
-//
-// Original Markdown
-// Copyright (c) 2004-2006 John Gruber
-// <http://daringfireball.net/projects/markdown/>
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-// * Redistributions of source code must retain the above copyright notice,
-// this list of conditions and the following disclaimer.
-//
-// * Redistributions in binary form must reproduce the above copyright
-// notice, this list of conditions and the following disclaimer in the
-// documentation and/or other materials provided with the distribution.
-//
-// * Neither the name "Markdown" nor the names of its contributors may
-// be used to endorse or promote products derived from this software
-// without specific prior written permission.
-//
-// This software is provided by the copyright holders and contributors "as
-// is" and any express or implied warranties, including, but not limited
-// to, the implied warranties of merchantability and fitness for a
-// particular purpose are disclaimed. In no event shall the copyright owner
-// or contributors be liable for any direct, indirect, incidental, special,
-// exemplary, or consequential damages (including, but not limited to,
-// procurement of substitute goods or services; loss of use, data, or
-// profits; or business interruption) however caused and on any theory of
-// liability, whether in contract, strict liability, or tort (including
-// negligence or otherwise) arising in any way out of the use of this
-// software, even if advised of the possibility of such damage.
-
-class MarkdownParser {
-
- ### Version ###
-
- const MARKDOWNLIB_VERSION = "1.4.1";
-
- ### Simple Function Interface ###
-
- public static function defaultTransform($text) {
- #
- # Initialize the parser and return the result of its transform method.
- # This will work fine for derived classes too.
- #
- # Take parser class on which this function was called.
- $parser_class = \get_called_class();
-
- # try to take parser from the static parser list
- static $parser_list;
- $parser =& $parser_list[$parser_class];
-
- # create the parser it not already set
- if (!$parser)
- $parser = new $parser_class;
-
- # Transform text using parser.
- return $parser->transform($text);
- }
-
- ### Configuration Variables ###
-
- # Change to ">" for HTML output.
- public $empty_element_suffix = " />";
- public $tab_width = 4;
-
- # Change to `true` to disallow markup or entities.
- public $no_markup = false;
- public $no_entities = false;
-
- # Predefined urls and titles for reference links and images.
- public $predef_urls = array();
- public $predef_titles = array();
-
- # Optional filter function for URLs
- public $url_filter_func = null;
-
-
- ### Parser Implementation ###
-
- # Regex to match balanced [brackets].
- # Needed to insert a maximum bracked depth while converting to PHP.
- protected $nested_brackets_depth = 6;
- protected $nested_brackets_re;
-
- protected $nested_url_parenthesis_depth = 4;
- protected $nested_url_parenthesis_re;
-
- # Table of hash values for escaped characters:
- protected $escape_chars = '\`*_{}[]()>#+-.!';
- protected $escape_chars_re;
-
-
- public function __construct() {
- #
- # Constructor function. Initialize appropriate member variables.
- #
- $this->_initDetab();
- $this->prepareItalicsAndBold();
-
- $this->nested_brackets_re =
- str_repeat('(?>[^\[\]]+|\[', $this->nested_brackets_depth).
- str_repeat('\])*', $this->nested_brackets_depth);
-
- $this->nested_url_parenthesis_re =
- str_repeat('(?>[^()\s]+|\(', $this->nested_url_parenthesis_depth).
- str_repeat('(?>\)))*', $this->nested_url_parenthesis_depth);
-
- $this->escape_chars_re = '['.preg_quote($this->escape_chars).']';
-
- # Sort document, block, and span gamut in ascendent priority order.
- asort($this->document_gamut);
- asort($this->block_gamut);
- asort($this->span_gamut);
- }
-
-
- # Internal hashes used during transformation.
- protected $urls = array();
- protected $titles = array();
- protected $html_hashes = array();
-
- # Status flag to avoid invalid nesting.
- protected $in_anchor = false;
-
-
- protected function setup() {
- #
- # Called before the transformation process starts to setup parser
- # states.
- #
- # Clear global hashes.
- $this->urls = $this->predef_urls;
- $this->titles = $this->predef_titles;
- $this->html_hashes = array();
-
- $this->in_anchor = false;
- }
-
- protected function teardown() {
- #
- # Called after the transformation process to clear any variable
- # which may be taking up memory unnecessarly.
- #
- $this->urls = array();
- $this->titles = array();
- $this->html_hashes = array();
- }
-
-
- public function transform($text) {
- #
- # Main function. Performs some preprocessing on the input text
- # and pass it through the document gamut.
- #
- $this->setup();
-
- # Remove UTF-8 BOM and marker character in input, if present.
- $text = preg_replace('{^\xEF\xBB\xBF|\x1A}', '', $text);
-
- # Standardize line endings:
- # DOS to Unix and Mac to Unix
- $text = preg_replace('{\r\n?}', "\n", $text);
-
- # Make sure $text ends with a couple of newlines:
- $text .= "\n\n";
-
- # Convert all tabs to spaces.
- $text = $this->detab($text);
-
- # Turn block-level HTML blocks into hash entries
- $text = $this->hashHTMLBlocks($text);
-
- # Strip any lines consisting only of spaces and tabs.
- # This makes subsequent regexen easier to write, because we can
- # match consecutive blank lines with /\n+/ instead of something
- # contorted like /[ ]*\n+/ .
- $text = preg_replace('/^[ ]+$/m', '', $text);
-
- # Run document gamut methods.
- foreach ($this->document_gamut as $method => $priority) {
- $text = $this->$method($text);
- }
-
- $this->teardown();
-
- return $text . "\n";
- }
-
- protected $document_gamut = array(
- # Strip link definitions, store in hashes.
- "stripLinkDefinitions" => 20,
-
- "runBasicBlockGamut" => 30,
- );
-
-
- protected function stripLinkDefinitions($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];
- $this->urls[$link_id] = $url;
- $this->titles[$link_id] =& $matches[4];
- return ''; # String that will replace the block
- }
-
-
- protected function hashHTMLBlocks($text) {
- if ($this->no_markup) return $text;
-
- $less_than_tab = $this->tab_width - 1;
-
- # Hashify HTML blocks:
- # We only want to do this for block-level HTML tags, such as headers,
- # lists, and tables. That's because we still want to wrap <p>s around
- # "paragraphs" that are wrapped in non-block-level tags, such as anchors,
- # phrase emphasis, and spans. The list of tags we're looking for is
- # hard-coded:
- #
- # * List "a" is made of tags which can be both inline or block-level.
- # These will be treated block-level when the start tag is alone on
- # its line, otherwise they're not matched here and will be taken as
- # inline later.
- # * List "b" is made of tags which are always block-level;
- #
- $block_tags_a_re = 'ins|del';
- $block_tags_b_re = 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|address|'.
- 'script|noscript|style|form|fieldset|iframe|math|svg|'.
- 'article|section|nav|aside|hgroup|header|footer|'.
- 'figure';
-
- # Regular expression for the content of a block tag.
- $nested_tags_level = 4;
- $attr = '
- (?> # optional tag attributes
- \s # starts with whitespace
- (?>
- [^>"/]+ # text outside quotes
- |
- /+(?!>) # slash not followed by ">"
- |
- "[^"]*" # text inside double quotes (tolerate ">")
- |
- \'[^\']*\' # text inside single quotes (tolerate ">")
- )*
- )?
- ';
- $content =
- str_repeat('
- (?>
- [^<]+ # content without tag
- |
- <\2 # nested opening tag
- '.$attr.' # attributes
- (?>
- />
- |
- >', $nested_tags_level). # end of opening tag
- '.*?'. # last level nested tag content
- str_repeat('
- </\2\s*> # closing nested tag
- )
- |
- <(?!/\2\s*> # other tags with a different name
- )
- )*',
- $nested_tags_level);
- $content2 = str_replace('\2', '\3', $content);
-
- # First, look for nested blocks, e.g.:
- # <div>
- # <div>
- # tags for inner block must be indented.
- # </div>
- # </div>
- #
- # The outermost tags must start at the left margin for this to match, and
- # the inner nested divs must be indented.
- # We need to do this before the next, more liberal match, because the next
- # match will start at the first `<div>` and stop at the first `</div>`.
- $text = preg_replace_callback('{(?>
- (?>
- (?<=\n) # Starting on its own line
- | # or
- \A\n? # the at beginning of the doc
- )
- ( # save in $1
-
- # Match from `\n<tag>` to `</tag>\n`, handling nested tags
- # in between.
-
- [ ]{0,'.$less_than_tab.'}
- <('.$block_tags_b_re.')# start tag = $2
- '.$attr.'> # attributes followed by > and \n
- '.$content.' # content, support nesting
- </\2> # the matching end tag
- [ ]* # trailing spaces/tabs
- (?=\n+|\Z) # followed by a newline or end of document
-
- | # Special version for tags of group a.
-
- [ ]{0,'.$less_than_tab.'}
- <('.$block_tags_a_re.')# start tag = $3
- '.$attr.'>[ ]*\n # attributes followed by >
- '.$content2.' # content, support nesting
- </\3> # the matching end tag
- [ ]* # trailing spaces/tabs
- (?=\n+|\Z) # followed by a newline or end of document
-
- | # Special case just for <hr />. It was easier to make a special
- # case than to make the other regex more complicated.
-
- [ ]{0,'.$less_than_tab.'}
- <(hr) # start tag = $2
- '.$attr.' # attributes
- /?> # the matching end tag
- [ ]*
- (?=\n{2,}|\Z) # followed by a blank line or end of document
-
- | # Special case for standalone HTML comments:
-
- [ ]{0,'.$less_than_tab.'}
- (?s:
- <!-- .*? -->
- )
- [ ]*
- (?=\n{2,}|\Z) # followed by a blank line or end of document
-
- | # PHP and ASP-style processor instructions (<? and <%)
-
- [ ]{0,'.$less_than_tab.'}
- (?s:
- <([?%]) # $2
- .*?
- \2>
- )
- [ ]*
- (?=\n{2,}|\Z) # followed by a blank line or end of document
-
- )
- )}Sxmi',
- array($this, '_hashHTMLBlocks_callback'),
- $text);
-
- return $text;
- }
- protected function _hashHTMLBlocks_callback($matches) {
- $text = $matches[1];
- $key = $this->hashBlock($text);
- return "\n\n$key\n\n";
- }
-
-
- protected function hashPart($text, $boundary = 'X') {
- #
- # Called whenever a tag must be hashed when a function insert an atomic
- # element in the text stream. Passing $text to through this function gives
- # a unique text-token which will be reverted back when calling unhash.
- #
- # The $boundary argument specify what character should be used to surround
- # the token. By convension, "B" is used for block elements that needs not
- # to be wrapped into paragraph tags at the end, ":" is used for elements
- # that are word separators and "X" is used in the general case.
- #
- # Swap back any tag hash found in $text so we do not have to `unhash`
- # multiple times at the end.
- $text = $this->unhash($text);
-
- # Then hash the block.
- static $i = 0;
- $key = "$boundary\x1A" . ++$i . $boundary;
- $this->html_hashes[$key] = $text;
- return $key; # String that will replace the tag.
- }
-
-
- protected function hashBlock($text) {
- #
- # Shortcut function for hashPart with block-level boundaries.
- #
- return $this->hashPart($text, 'B');
- }
-
-
- protected $block_gamut = array(
- #
- # These are all the transformations that form block-level
- # tags like paragraphs, headers, and list items.
- #
- "doHeaders" => 10,
- "doHorizontalRules" => 20,
-
- "doLists" => 40,
- "doCodeBlocks" => 50,
- "doBlockQuotes" => 60,
- );
-
- protected function runBlockGamut($text) {
- #
- # Run block gamut tranformations.
- #
- # We need to escape raw HTML in Markdown source before doing anything
- # else. This need to be done for each block, and not only at the
- # begining in the Markdown function since hashed blocks can be part of
- # list items and could have been indented. Indented blocks would have
- # been seen as a code block in a previous pass of hashHTMLBlocks.
- $text = $this->hashHTMLBlocks($text);
-
- return $this->runBasicBlockGamut($text);
- }
-
- protected function runBasicBlockGamut($text) {
- #
- # Run block gamut tranformations, without hashing HTML blocks. This is
- # useful when HTML blocks are known to be already hashed, like in the first
- # whole-document pass.
- #
- foreach ($this->block_gamut as $method => $priority) {
- $text = $this->$method($text);
- }
-
- # Finally form paragraph and restore hashed blocks.
- $text = $this->formParagraphs($text);
-
- return $text;
- }
-
-
- protected function doHorizontalRules($text) {
- # Do Horizontal Rules:
- return preg_replace(
- '{
- ^[ ]{0,3} # Leading space
- ([-*_]) # $1: First marker
- (?> # Repeated marker group
- [ ]{0,2} # Zero, one, or two spaces.
- \1 # Marker character
- ){2,} # Group repeated at least twice
- [ ]* # Tailing spaces
- $ # End of line.
- }mx',
- "\n".$this->hashBlock("<hr$this->empty_element_suffix")."\n",
- $text);
- }
-
-
- protected $span_gamut = array(
- #
- # These are all the transformations that occur *within* block-level
- # tags like paragraphs, headers, and list items.
- #
- # Process character escapes, code spans, and inline HTML
- # in one shot.
- "parseSpan" => -30,
-
- # Process anchor and image tags. Images must come first,
- # because ![foo][f] looks like an anchor.
- "doImages" => 10,
- "doAnchors" => 20,
-
- # Make links out of things like `<http://example.com/>`
- # Must come after doAnchors, because you can use < and >
- # delimiters in inline links like [this](<url>).
- "doAutoLinks" => 30,
- "encodeAmpsAndAngles" => 40,
-
- "doItalicsAndBold" => 50,
- "doHardBreaks" => 60,
- );
-
- protected function runSpanGamut($text) {
- #
- # Run span gamut tranformations.
- #
- foreach ($this->span_gamut as $method => $priority) {
- $text = $this->$method($text);
- }
-
- return $text;
- }
-
-
- protected function doHardBreaks($text) {
- # Do hard breaks:
- return preg_replace_callback('/ {2,}\n/',
- array($this, '_doHardBreaks_callback'), $text);
- }
- protected function _doHardBreaks_callback($matches) {
- return $this->hashPart("<br$this->empty_element_suffix\n");
- }
-
-
- protected function doAnchors($text) {
- #
- # Turn Markdown link shortcuts into XHTML <a> tags.
- #
- if ($this->in_anchor) return $text;
- $this->in_anchor = true;
-
- #
- # First, handle reference-style links: [link text] [id]
- #
- $text = preg_replace_callback('{
- ( # wrap whole match in $1
- \[
- ('.$this->nested_brackets_re.') # link text = $2
- \]
-
- [ ]? # one optional space
- (?:\n[ ]*)? # one optional newline followed by spaces
-
- \[
- (.*?) # id = $3
- \]
- )
- }xs',
- array($this, '_doAnchors_reference_callback'), $text);
-
- #
- # Next, inline-style links: [link text](url "optional title")
- #
- $text = preg_replace_callback('{
- ( # wrap whole match in $1
- \[
- ('.$this->nested_brackets_re.') # link text = $2
- \]
- \( # literal paren
- [ \n]*
- (?:
- <(.+?)> # href = $3
- |
- ('.$this->nested_url_parenthesis_re.') # href = $4
- )
- [ \n]*
- ( # $5
- ([\'"]) # quote char = $6
- (.*?) # Title = $7
- \6 # matching quote
- [ \n]* # ignore any spaces/tabs between closing quote and )
- )? # title is optional
- \)
- )
- }xs',
- array($this, '_doAnchors_inline_callback'), $text);
-
- #
- # Last, handle reference-style shortcuts: [link text]
- # These must come last in case you've also got [link text][1]
- # or [link text](/foo)
- #
- $text = preg_replace_callback('{
- ( # wrap whole match in $1
- \[
- ([^\[\]]+) # link text = $2; can\'t contain [ or ]
- \]
- )
- }xs',
- array($this, '_doAnchors_reference_callback'), $text);
-
- $this->in_anchor = false;
- return $text;
- }
- protected function _doAnchors_reference_callback($matches) {
- $whole_match = $matches[1];
- $link_text = $matches[2];
- $link_id =& $matches[3];
-
- if ($link_id == "") {
- # for shortcut links like [this][] or [this].
- $link_id = $link_text;
- }
-
- # lower-case and turn embedded newlines into spaces
- $link_id = strtolower($link_id);
- $link_id = preg_replace('{[ ]?\n}', ' ', $link_id);
-
- if (isset($this->urls[$link_id])) {
- $url = $this->urls[$link_id];
- $url = $this->encodeURLAttribute($url);
-
- $result = "<a href=\"$url\"";
- if ( isset( $this->titles[$link_id] ) ) {
- $title = $this->titles[$link_id];
- $title = $this->encodeAttribute($title);
- $result .= " title=\"$title\"";
- }
-
- $link_text = $this->runSpanGamut($link_text);
- $result .= ">$link_text</a>";
- $result = $this->hashPart($result);
- }
- else {
- $result = $whole_match;
- }
- return $result;
- }
- protected function _doAnchors_inline_callback($matches) {
- $whole_match = $matches[1];
- $link_text = $this->runSpanGamut($matches[2]);
- $url = $matches[3] == '' ? $matches[4] : $matches[3];
- $title =& $matches[7];
-
- // if the URL was of the form <s p a c e s> it got caught by the HTML
- // tag parser and hashed. Need to reverse the process before using the URL.
- $unhashed = $this->unhash($url);
- if ($unhashed != $url)
- $url = preg_replace('/^<(.*)>$/', '\1', $unhashed);
-
- $url = $this->encodeURLAttribute($url);
-
- $result = "<a href=\"$url\"";
- if (isset($title)) {
- $title = $this->encodeAttribute($title);
- $result .= " title=\"$title\"";
- }
-
- $link_text = $this->runSpanGamut($link_text);
- $result .= ">$link_text</a>";
-
- return $this->hashPart($result);
- }
-
-
- protected function doImages($text) {
- #
- # Turn Markdown image shortcuts into <img> tags.
- #
- #
- # First, handle reference-style labeled images: ![alt text][id]
- #
- $text = preg_replace_callback('{
- ( # wrap whole match in $1
- !\[
- ('.$this->nested_brackets_re.') # alt text = $2
- \]
-
- [ ]? # one optional space
- (?:\n[ ]*)? # one optional newline followed by spaces
-
- \[
- (.*?) # id = $3
- \]
-
- )
- }xs',
- array($this, '_doImages_reference_callback'), $text);
-
- #
- # Next, handle inline images: 
- # Don't forget: encode * and _
- #
- $text = preg_replace_callback('{
- ( # wrap whole match in $1
- !\[
- ('.$this->nested_brackets_re.') # alt text = $2
- \]
- \s? # One optional whitespace character
- \( # literal paren
- [ \n]*
- (?:
- <(\S*)> # src url = $3
- |
- ('.$this->nested_url_parenthesis_re.') # src url = $4
- )
- [ \n]*
- ( # $5
- ([\'"]) # quote char = $6
- (.*?) # title = $7
- \6 # matching quote
- [ \n]*
- )? # title is optional
- \)
- )
- }xs',
- array($this, '_doImages_inline_callback'), $text);
-
- return $text;
- }
- protected function _doImages_reference_callback($matches) {
- $whole_match = $matches[1];
- $alt_text = $matches[2];
- $link_id = strtolower($matches[3]);
-
- if ($link_id == "") {
- $link_id = strtolower($alt_text); # for shortcut links like ![this][].
- }
-
- $alt_text = $this->encodeAttribute($alt_text);
- if (isset($this->urls[$link_id])) {
- $url = $this->encodeURLAttribute($this->urls[$link_id]);
- $result = "<img src=\"$url\" alt=\"$alt_text\"";
- if (isset($this->titles[$link_id])) {
- $title = $this->titles[$link_id];
- $title = $this->encodeAttribute($title);
- $result .= " title=\"$title\"";
- }
- $result .= $this->empty_element_suffix;
- $result = $this->hashPart($result);
- }
- else {
- # If there's no such link ID, leave intact:
- $result = $whole_match;
- }
-
- return $result;
- }
- protected function _doImages_inline_callback($matches) {
- $whole_match = $matches[1];
- $alt_text = $matches[2];
- $url = $matches[3] == '' ? $matches[4] : $matches[3];
- $title =& $matches[7];
-
- $alt_text = $this->encodeAttribute($alt_text);
- $url = $this->encodeURLAttribute($url);
- $result = "<img src=\"$url\" alt=\"$alt_text\"";
- if (isset($title)) {
- $title = $this->encodeAttribute($title);
- $result .= " title=\"$title\""; # $title already quoted
- }
- $result .= $this->empty_element_suffix;
-
- return $this->hashPart($result);
- }
-
-
- protected function doHeaders($text) {
- # Setext-style headers:
- # Header 1
- # ========
- #
- # Header 2
- # --------
- #
- $text = preg_replace_callback('{ ^(.+?)[ ]*\n(=+|-+)[ ]*\n+ }mx',
- array($this, '_doHeaders_callback_setext'), $text);
-
- # atx-style headers:
- # # Header 1
- # ## Header 2
- # ## Header 2 with closing hashes ##
- # ...
- # ###### Header 6
- #
- $text = preg_replace_callback('{
- ^(\#{1,6}) # $1 = string of #\'s
- [ ]*
- (.+?) # $2 = Header text
- [ ]*
- \#* # optional closing #\'s (not counted)
- \n+
- }xm',
- array($this, '_doHeaders_callback_atx'), $text);
-
- return $text;
- }
- protected function _doHeaders_callback_setext($matches) {
- # Terrible hack to check we haven't found an empty list item.
- if ($matches[2] == '-' && preg_match('{^-(?: |$)}', $matches[1]))
- return $matches[0];
-
- $level = $matches[2]{0} == '=' ? 1 : 2;
- $block = "<h$level>".$this->runSpanGamut($matches[1])."</h$level>";
- return "\n" . $this->hashBlock($block) . "\n\n";
- }
- protected function _doHeaders_callback_atx($matches) {
- $level = strlen($matches[1]);
- $block = "<h$level>".$this->runSpanGamut($matches[2])."</h$level>";
- return "\n" . $this->hashBlock($block) . "\n\n";
- }
-
-
- protected function doLists($text) {
- #
- # Form HTML ordered (numbered) and unordered (bulleted) lists.
- #
- $less_than_tab = $this->tab_width - 1;
-
- # Re-usable patterns to match list item bullets and number markers:
- $marker_ul_re = '[*+-]';
- $marker_ol_re = '\d+[\.]';
-
- $markers_relist = array(
- $marker_ul_re => $marker_ol_re,
- $marker_ol_re => $marker_ul_re,
- );
-
- foreach ($markers_relist as $marker_re => $other_marker_re) {
- # Re-usable pattern to match any entirel ul or ol list:
- $whole_list_re = '
- ( # $1 = whole list
- ( # $2
- ([ ]{0,'.$less_than_tab.'}) # $3 = number of spaces
- ('.$marker_re.') # $4 = first list item marker
- [ ]+
- )
- (?s:.+?)
- ( # $5
- \z
- |
- \n{2,}
- (?=\S)
- (?! # Negative lookahead for another list item marker
- [ ]*
- '.$marker_re.'[ ]+
- )
- |
- (?= # Lookahead for another kind of list
- \n
- \3 # Must have the same indentation
- '.$other_marker_re.'[ ]+
- )
- )
- )
- '; // mx
-
- # We use a different prefix before nested lists than top-level lists.
- # See extended comment in _ProcessListItems().
-
- if ($this->list_level) {
- $text = preg_replace_callback('{
- ^
- '.$whole_list_re.'
- }mx',
- array($this, '_doLists_callback'), $text);
- }
- else {
- $text = preg_replace_callback('{
- (?:(?<=\n)\n|\A\n?) # Must eat the newline
- '.$whole_list_re.'
- }mx',
- array($this, '_doLists_callback'), $text);
- }
- }
-
- return $text;
- }
- protected function _doLists_callback($matches) {
- # Re-usable patterns to match list item bullets and number markers:
- $marker_ul_re = '[*+-]';
- $marker_ol_re = '\d+[\.]';
- $marker_any_re = "(?:$marker_ul_re|$marker_ol_re)";
-
- $list = $matches[1];
- $list_type = preg_match("/$marker_ul_re/", $matches[4]) ? "ul" : "ol";
-
- $marker_any_re = ( $list_type == "ul" ? $marker_ul_re : $marker_ol_re );
-
- $list .= "\n";
- $result = $this->processListItems($list, $marker_any_re);
-
- $result = $this->hashBlock("<$list_type>\n" . $result . "</$list_type>");
- return "\n". $result ."\n\n";
- }
-
- protected $list_level = 0;
-
- protected function processListItems($list_str, $marker_any_re) {
- #
- # Process the contents of a single ordered or unordered list, splitting it
- # into individual list items.
- #
- # The $this->list_level global keeps track of when we're inside a list.
- # Each time we enter a list, we increment it; when we leave a list,
- # we decrement. If it's zero, we're not in a list anymore.
- #
- # We do this because when we're not inside a list, we want to treat
- # something like this:
- #
- # I recommend upgrading to version
- # 8. Oops, now this line is treated
- # as a sub-list.
- #
- # As a single paragraph, despite the fact that the second line starts
- # with a digit-period-space sequence.
- #
- # Whereas when we're inside a list (or sub-list), that line will be
- # treated as the start of a sub-list. What a kludge, huh? This is
- # an aspect of Markdown's syntax that's hard to parse perfectly
- # without resorting to mind-reading. Perhaps the solution is to
- # change the syntax rules such that sub-lists must start with a
- # starting cardinal number; e.g. "1." or "a.".
-
- $this->list_level++;
-
- # trim trailing blank lines:
- $list_str = preg_replace("/\n{2,}\\z/", "\n", $list_str);
-
- $list_str = preg_replace_callback('{
- (\n)? # leading line = $1
- (^[ ]*) # leading whitespace = $2
- ('.$marker_any_re.' # list marker and space = $3
- (?:[ ]+|(?=\n)) # space only required if item is not empty
- )
- ((?s:.*?)) # list item text = $4
- (?:(\n+(?=\n))|\n) # tailing blank line = $5
- (?= \n* (\z | \2 ('.$marker_any_re.') (?:[ ]+|(?=\n))))
- }xm',
- array($this, '_processListItems_callback'), $list_str);
-
- $this->list_level--;
- return $list_str;
- }
- protected function _processListItems_callback($matches) {
- $item = $matches[4];
- $leading_line =& $matches[1];
- $leading_space =& $matches[2];
- $marker_space = $matches[3];
- $tailing_blank_line =& $matches[5];
-
- if ($leading_line || $tailing_blank_line ||
- preg_match('/\n{2,}/', $item))
- {
- # Replace marker with the appropriate whitespace indentation
- $item = $leading_space . str_repeat(' ', strlen($marker_space)) . $item;
- $item = $this->runBlockGamut($this->outdent($item)."\n");
- }
- else {
- # Recursion for sub-lists:
- $item = $this->doLists($this->outdent($item));
- $item = preg_replace('/\n+$/', '', $item);
- $item = $this->runSpanGamut($item);
- }
-
- return "<li>" . $item . "</li>\n";
- }
-
-
- protected function doCodeBlocks($text) {
- #
- # Process Markdown `<pre><code>` blocks.
- #
- $text = preg_replace_callback('{
- (?:\n\n|\A\n?)
- ( # $1 = the code block -- one or more lines, starting with a space/tab
- (?>
- [ ]{'.$this->tab_width.'} # Lines must start with a tab or a tab-width of spaces
- .*\n+
- )+
- )
- ((?=^[ ]{0,'.$this->tab_width.'}\S)|\Z) # Lookahead for non-space at line-start, or end of doc
- }xm',
- array($this, '_doCodeBlocks_callback'), $text);
-
- return $text;
- }
- protected function _doCodeBlocks_callback($matches) {
- $codeblock = $matches[1];
-
- $codeblock = $this->outdent($codeblock);
- $codeblock = htmlspecialchars($codeblock, ENT_NOQUOTES);
-
- # trim leading newlines and trailing newlines
- $codeblock = preg_replace('/\A\n+|\n+\z/', '', $codeblock);
-
- $codeblock = "<pre><code>$codeblock\n</code></pre>";
- return "\n\n".$this->hashBlock($codeblock)."\n\n";
- }
-
-
- protected function makeCodeSpan($code) {
- #
- # Create a code span markup for $code. Called from handleSpanToken.
- #
- $code = htmlspecialchars(trim($code), ENT_NOQUOTES);
- return $this->hashPart("<code>$code</code>");
- }
-
-
- protected $em_relist = array(
- '' => '(?:(?<!\*)\*(?!\*)|(?<!_)_(?!_))(?![\.,:;]?\s)',
- '*' => '(?<![\s*])\*(?!\*)',
- '_' => '(?<![\s_])_(?!_)',
- );
- protected $strong_relist = array(
- '' => '(?:(?<!\*)\*\*(?!\*)|(?<!_)__(?!_))(?![\.,:;]?\s)',
- '**' => '(?<![\s*])\*\*(?!\*)',
- '__' => '(?<![\s_])__(?!_)',
- );
- protected $em_strong_relist = array(
- '' => '(?:(?<!\*)\*\*\*(?!\*)|(?<!_)___(?!_))(?![\.,:;]?\s)',
- '***' => '(?<![\s*])\*\*\*(?!\*)',
- '___' => '(?<![\s_])___(?!_)',
- );
- protected $em_strong_prepared_relist;
-
- protected function prepareItalicsAndBold() {
- #
- # Prepare regular expressions for searching emphasis tokens in any
- # context.
- #
- foreach ($this->em_relist as $em => $em_re) {
- foreach ($this->strong_relist as $strong => $strong_re) {
- # Construct list of allowed token expressions.
- $token_relist = array();
- if (isset($this->em_strong_relist["$em$strong"])) {
- $token_relist[] = $this->em_strong_relist["$em$strong"];
- }
- $token_relist[] = $em_re;
- $token_relist[] = $strong_re;
-
- # Construct master expression from list.
- $token_re = '{('. implode('|', $token_relist) .')}';
- $this->em_strong_prepared_relist["$em$strong"] = $token_re;
- }
- }
- }
-
- protected function doItalicsAndBold($text) {
- $token_stack = array('');
- $text_stack = array('');
- $em = '';
- $strong = '';
- $tree_char_em = false;
-
- while (1) {
- #
- # Get prepared regular expression for seraching emphasis tokens
- # in current context.
- #
- $token_re = $this->em_strong_prepared_relist["$em$strong"];
-
- #
- # Each loop iteration search for the next emphasis token.
- # Each token is then passed to handleSpanToken.
- #
- $parts = preg_split($token_re, $text, 2, PREG_SPLIT_DELIM_CAPTURE);
- $text_stack[0] .= $parts[0];
- $token =& $parts[1];
- $text =& $parts[2];
-
- if (empty($token)) {
- # Reached end of text span: empty stack without emitting.
- # any more emphasis.
- while ($token_stack[0]) {
- $text_stack[1] .= array_shift($token_stack);
- $text_stack[0] .= array_shift($text_stack);
- }
- break;
- }
-
- $token_len = strlen($token);
- if ($tree_char_em) {
- # Reached closing marker while inside a three-char emphasis.
- if ($token_len == 3) {
- # Three-char closing marker, close em and strong.
- array_shift($token_stack);
- $span = array_shift($text_stack);
- $span = $this->runSpanGamut($span);
- $span = "<strong><em>$span</em></strong>";
- $text_stack[0] .= $this->hashPart($span);
- $em = '';
- $strong = '';
- } else {
- # Other closing marker: close one em or strong and
- # change current token state to match the other
- $token_stack[0] = str_repeat($token{0}, 3-$token_len);
- $tag = $token_len == 2 ? "strong" : "em";
- $span = $text_stack[0];
- $span = $this->runSpanGamut($span);
- $span = "<$tag>$span</$tag>";
- $text_stack[0] = $this->hashPart($span);
- $$tag = ''; # $$tag stands for $em or $strong
- }
- $tree_char_em = false;
- } else if ($token_len == 3) {
- if ($em) {
- # Reached closing marker for both em and strong.
- # Closing strong marker:
- for ($i = 0; $i < 2; ++$i) {
- $shifted_token = array_shift($token_stack);
- $tag = strlen($shifted_token) == 2 ? "strong" : "em";
- $span = array_shift($text_stack);
- $span = $this->runSpanGamut($span);
- $span = "<$tag>$span</$tag>";
- $text_stack[0] .= $this->hashPart($span);
- $$tag = ''; # $$tag stands for $em or $strong
- }
- } else {
- # Reached opening three-char emphasis marker. Push on token
- # stack; will be handled by the special condition above.
- $em = $token{0};
- $strong = "$em$em";
- array_unshift($token_stack, $token);
- array_unshift($text_stack, '');
- $tree_char_em = true;
- }
- } else if ($token_len == 2) {
- if ($strong) {
- # Unwind any dangling emphasis marker:
- if (strlen($token_stack[0]) == 1) {
- $text_stack[1] .= array_shift($token_stack);
- $text_stack[0] .= array_shift($text_stack);
- }
- # Closing strong marker:
- array_shift($token_stack);
- $span = array_shift($text_stack);
- $span = $this->runSpanGamut($span);
- $span = "<strong>$span</strong>";
- $text_stack[0] .= $this->hashPart($span);
- $strong = '';
- } else {
- array_unshift($token_stack, $token);
- array_unshift($text_stack, '');
- $strong = $token;
- }
- } else {
- # Here $token_len == 1
- if ($em) {
- if (strlen($token_stack[0]) == 1) {
- # Closing emphasis marker:
- array_shift($token_stack);
- $span = array_shift($text_stack);
- $span = $this->runSpanGamut($span);
- $span = "<em>$span</em>";
- $text_stack[0] .= $this->hashPart($span);
- $em = '';
- } else {
- $text_stack[0] .= $token;
- }
- } else {
- array_unshift($token_stack, $token);
- array_unshift($text_stack, '');
- $em = $token;
- }
- }
- }
- return $text_stack[0];
- }
-
-
- protected function doBlockQuotes($text) {
- $text = preg_replace_callback('/
- ( # Wrap whole match in $1
- (?>
- ^[ ]*>[ ]? # ">" at the start of a line
- .+\n # rest of the first line
- (.+\n)* # subsequent consecutive lines
- \n* # blanks
- )+
- )
- /xm',
- array($this, '_doBlockQuotes_callback'), $text);
-
- return $text;
- }
- protected function _doBlockQuotes_callback($matches) {
- $bq = $matches[1];
- # trim one level of quoting - trim whitespace-only lines
- $bq = preg_replace('/^[ ]*>[ ]?|^[ ]+$/m', '', $bq);
- $bq = $this->runBlockGamut($bq); # recurse
-
- $bq = preg_replace('/^/m', " ", $bq);
- # These leading spaces cause problem with <pre> content,
- # so we need to fix that:
- $bq = preg_replace_callback('{(\s*<pre>.+?</pre>)}sx',
- array($this, '_doBlockQuotes_callback2'), $bq);
-
- return "\n". $this->hashBlock("<blockquote>\n$bq\n</blockquote>")."\n\n";
- }
- protected function _doBlockQuotes_callback2($matches) {
- $pre = $matches[1];
- $pre = preg_replace('/^ /m', '', $pre);
- return $pre;
- }
-
-
- protected function formParagraphs($text) {
- #
- # Params:
- # $text - string to process with html <p> tags
- #
- # Strip leading and trailing lines:
- $text = preg_replace('/\A\n+|\n+\z/', '', $text);
-
- $grafs = preg_split('/\n{2,}/', $text, -1, PREG_SPLIT_NO_EMPTY);
-
- #
- # Wrap <p> tags and unhashify HTML blocks
- #
- foreach ($grafs as $key => $value) {
- if (!preg_match('/^B\x1A[0-9]+B$/', $value)) {
- # Is a paragraph.
- $value = $this->runSpanGamut($value);
- $value = preg_replace('/^([ ]*)/', "<p>", $value);
- $value .= "</p>";
- $grafs[$key] = $this->unhash($value);
- }
- else {
- # Is a block.
- # Modify elements of @grafs in-place...
- $graf = $value;
- $block = $this->html_hashes[$graf];
- $graf = $block;
-// if (preg_match('{
-// \A
-// ( # $1 = <div> tag
-// <div \s+
-// [^>]*
-// \b
-// markdown\s*=\s* ([\'"]) # $2 = attr quote char
-// 1
-// \2
-// [^>]*
-// >
-// )
-// ( # $3 = contents
-// .*
-// )
-// (</div>) # $4 = closing tag
-// \z
-// }xs', $block, $matches))
-// {
-// list(, $div_open, , $div_content, $div_close) = $matches;
-//
-// # We can't call Markdown(), because that resets the hash;
-// # that initialization code should be pulled into its own sub, though.
-// $div_content = $this->hashHTMLBlocks($div_content);
-//
-// # Run document gamut methods on the content.
-// foreach ($this->document_gamut as $method => $priority) {
-// $div_content = $this->$method($div_content);
-// }
-//
-// $div_open = preg_replace(
-// '{\smarkdown\s*=\s*([\'"]).+?\1}', '', $div_open);
-//
-// $graf = $div_open . "\n" . $div_content . "\n" . $div_close;
-// }
- $grafs[$key] = $graf;
- }
- }
-
- return implode("\n\n", $grafs);
- }
-
-
- protected function encodeAttribute($text) {
- #
- # Encode text for a double-quoted HTML attribute. This function
- # is *not* suitable for attributes enclosed in single quotes.
- #
- $text = $this->encodeAmpsAndAngles($text);
- $text = str_replace('"', '"', $text);
- return $text;
- }
-
-
- protected function encodeURLAttribute($url, &$text = null) {
- #
- # Encode text for a double-quoted HTML attribute containing a URL,
- # applying the URL filter if set. Also generates the textual
- # representation for the URL (removing mailto: or tel:) storing it in $text.
- # This function is *not* suitable for attributes enclosed in single quotes.
- #
- if ($this->url_filter_func)
- $url = call_user_func($this->url_filter_func, $url);
-
- if (preg_match('{^mailto:}i', $url))
- $url = $this->encodeEntityObfuscatedAttribute($url, $text, 7);
- else if (preg_match('{^tel:}i', $url))
- {
- $url = $this->encodeAttribute($url);
- $text = substr($url, 4);
- }
- else
- {
- $url = $this->encodeAttribute($url);
- $text = $url;
- }
-
- return $url;
- }
-
-
- protected function encodeAmpsAndAngles($text) {
- #
- # Smart processing for ampersands and angle brackets that need to
- # be encoded. Valid character entities are left alone unless the
- # no-entities mode is set.
- #
- if ($this->no_entities) {
- $text = str_replace('&', '&', $text);
- } else {
- # Ampersand-encoding based entirely on Nat Irons's Amputator
- # MT plugin: <http://bumppo.net/projects/amputator/>
- $text = preg_replace('/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/',
- '&', $text);
- }
- # Encode remaining <'s
- $text = str_replace('<', '<', $text);
-
- return $text;
- }
-
-
- protected function doAutoLinks($text) {
- $text = preg_replace_callback('{<((https?|ftp|dict|tel):[^\'">\s]+)>}i',
- array($this, '_doAutoLinks_url_callback'), $text);
-
- # Email addresses: <address@domain.foo>
- $text = preg_replace_callback('{
- <
- (?:mailto:)?
- (
- (?:
- [-!#$%&\'*+/=?^_`.{|}~\w\x80-\xFF]+
- |
- ".*?"
- )
- \@
- (?:
- [-a-z0-9\x80-\xFF]+(\.[-a-z0-9\x80-\xFF]+)*\.[a-z]+
- |
- \[[\d.a-fA-F:]+\] # IPv4 & IPv6
- )
- )
- >
- }xi',
- array($this, '_doAutoLinks_email_callback'), $text);
-
- return $text;
- }
- protected function _doAutoLinks_url_callback($matches) {
- $url = $this->encodeURLAttribute($matches[1], $text);
- $link = "<a href=\"$url\">$text</a>";
- return $this->hashPart($link);
- }
- protected function _doAutoLinks_email_callback($matches) {
- $addr = $matches[1];
- $url = $this->encodeURLAttribute("mailto:$addr", $text);
- $link = "<a href=\"$url\">$text</a>";
- return $this->hashPart($link);
- }
-
-
- protected function encodeEntityObfuscatedAttribute($text, &$tail = null, $head_length = 0) {
- #
- # Input: some text to obfuscate, e.g. "mailto:foo@example.com"
- #
- # Output: the same text but with most characters encoded as either a
- # decimal or hex entity, in the hopes of foiling most address
- # harvesting spam bots. E.g.:
- #
- # mailto:foo
- # @example.co
- # m
- #
- # Note: the additional output $tail is assigned the same value as the
- # ouput, minus the number of characters specified by $head_length.
- #
- # Based by a filter by Matthew Wickline, posted to BBEdit-Talk.
- # With some optimizations by Milian Wolff. Forced encoding of HTML
- # attribute special characters by Allan Odgaard.
- #
- if ($text == "") return $tail = "";
-
- $chars = preg_split('/(?<!^)(?!$)/', $text);
- $seed = (int)abs(crc32($text) / strlen($text)); # Deterministic seed.
-
- foreach ($chars as $key => $char) {
- $ord = ord($char);
- # Ignore non-ascii chars.
- if ($ord < 128) {
- $r = ($seed * (1 + $key)) % 100; # Pseudo-random function.
- # roughly 10% raw, 45% hex, 45% dec
- # '@' *must* be encoded. I insist.
- # '"' and '>' have to be encoded inside the attribute
- if ($r > 90 && strpos('@"&>', $char) === false) /* do nothing */;
- else if ($r < 45) $chars[$key] = '&#x'.dechex($ord).';';
- else $chars[$key] = '&#'.$ord.';';
- }
- }
-
- $text = implode('', $chars);
- $tail = $head_length ? implode('', array_slice($chars, $head_length)) : $text;
-
- return $text;
- }
-
-
- protected function parseSpan($str) {
- #
- # Take the string $str and parse it into tokens, hashing embeded HTML,
- # escaped characters and handling code spans.
- #
- $output = '';
-
- $span_re = '{
- (
- \\\\'.$this->escape_chars_re.'
- |
- (?<![`\\\\])
- `+ # code span marker
- '.( $this->no_markup ? '' : '
- |
- <!-- .*? --> # comment
- |
- <\?.*?\?> | <%.*?%> # processing instruction
- |
- <[!$]?[-a-zA-Z0-9:_]+ # regular tags
- (?>
- \s
- (?>[^"\'>]+|"[^"]*"|\'[^\']*\')*
- )?
- >
- |
- <[-a-zA-Z0-9:_]+\s*/> # xml-style empty tag
- |
- </[-a-zA-Z0-9:_]+\s*> # closing tag
- ').'
- )
- }xs';
-
- while (1) {
- #
- # Each loop iteration seach for either the next tag, the next
- # openning code span marker, or the next escaped character.
- # Each token is then passed to handleSpanToken.
- #
- $parts = preg_split($span_re, $str, 2, PREG_SPLIT_DELIM_CAPTURE);
-
- # Create token from text preceding tag.
- if ($parts[0] != "") {
- $output .= $parts[0];
- }
-
- # Check if we reach the end.
- if (isset($parts[1])) {
- $output .= $this->handleSpanToken($parts[1], $parts[2]);
- $str = $parts[2];
- }
- else {
- break;
- }
- }
-
- return $output;
- }
-
-
- protected function handleSpanToken($token, &$str) {
- #
- # Handle $token provided by parseSpan by determining its nature and
- # returning the corresponding value that should replace it.
- #
- switch ($token{0}) {
- case "\\":
- return $this->hashPart("&#". ord($token{1}). ";");
- case "`":
- # Search for end marker in remaining text.
- if (preg_match('/^(.*?[^`])'.preg_quote($token).'(?!`)(.*)$/sm',
- $str, $matches))
- {
- $str = $matches[2];
- $codespan = $this->makeCodeSpan($matches[1]);
- return $this->hashPart($codespan);
- }
- return $token; // return as text since no ending marker found.
- default:
- return $this->hashPart($token);
- }
- }
-
-
- protected function outdent($text) {
- #
- # Remove one level of line-leading tabs or spaces
- #
- return preg_replace('/^(\t|[ ]{1,'.$this->tab_width.'})/m', '', $text);
- }
-
-
- # String length function for detab. `_initDetab` will create a function to
- # hanlde UTF-8 if the default function does not exist.
- protected $utf8_strlen = 'mb_strlen';
-
- protected function detab($text) {
- #
- # Replace tabs with the appropriate amount of space.
- #
- # For each line we separate the line in blocks delemited by
- # tab characters. Then we reconstruct every line by adding the
- # appropriate number of space between each blocks.
-
- $text = preg_replace_callback('/^.*\t.*$/m',
- array($this, '_detab_callback'), $text);
-
- return $text;
- }
- protected function _detab_callback($matches) {
- $line = $matches[0];
- $strlen = $this->utf8_strlen; # strlen function for UTF-8.
-
- # Split in blocks.
- $blocks = explode("\t", $line);
- # Add each blocks to the line.
- $line = $blocks[0];
- unset($blocks[0]); # Do not add first block twice.
- foreach ($blocks as $block) {
- # Calculate amount of space, insert spaces, insert block.
- $amount = $this->tab_width -
- $strlen($line, 'UTF-8') % $this->tab_width;
- $line .= str_repeat(" ", $amount) . $block;
- }
- return $line;
- }
- protected function _initDetab() {
- #
- # Check for the availability of the function in the `utf8_strlen` property
- # (initially `mb_strlen`). If the function is not available, create a
- # function that will loosely count the number of UTF-8 characters with a
- # regular expression.
- #
- if (function_exists($this->utf8_strlen)) return;
- $this->utf8_strlen = create_function('$text', 'return preg_match_all(
- "/[\\\\x00-\\\\xBF]|[\\\\xC0-\\\\xFF][\\\\x80-\\\\xBF]*/",
- $text, $m);');
- }
-
-
- protected function unhash($text) {
- #
- # Swap back in all the tags hashed by _HashHTMLBlocks.
- #
- return preg_replace_callback('/(.)\x1A[0-9]+\1/',
- array($this, '_unhash_callback'), $text);
- }
- protected function _unhash_callback($matches) {
- return $this->html_hashes[$matches[0]];
- }
-
-}
-
-class MarkdownExtraParser extends MarkdownParser {
-
- ### Configuration Variables ###
-
- # Prefix for footnote ids.
- public $fn_id_prefix = "";
-
- # Optional title attribute for footnote links and backlinks.
- public $fn_link_title = "";
- public $fn_backlink_title = "";
-
- # Optional class attribute for footnote links and backlinks.
- public $fn_link_class = "footnote-ref";
- public $fn_backlink_class = "footnote-backref";
-
- # Class name for table cell alignment (%% replaced left/center/right)
- # For instance: 'go-%%' becomes 'go-left' or 'go-right' or 'go-center'
- # If empty, the align attribute is used instead of a class name.
- public $table_align_class_tmpl = '';
-
- # Optional class prefix for fenced code block.
- public $code_class_prefix = "";
- # Class attribute for code blocks goes on the `code` tag;
- # setting this to true will put attributes on the `pre` tag instead.
- public $code_attr_on_pre = false;
-
- # Predefined abbreviations.
- public $predef_abbr = array();
-
-
- ### Parser Implementation ###
-
- public function __construct() {
- #
- # Constructor function. Initialize the parser object.
- #
- # Add extra escapable characters before parent constructor
- # initialize the table.
- $this->escape_chars .= ':|';
-
- # Insert extra document, block, and span transformations.
- # Parent constructor will do the sorting.
- $this->document_gamut += array(
- "doFencedCodeBlocks" => 5,
- "stripFootnotes" => 15,
- "stripAbbreviations" => 25,
- "appendFootnotes" => 50,
- );
- $this->block_gamut += array(
- "doFencedCodeBlocks" => 5,
- "doTables" => 15,
- "doDefLists" => 45,
- );
- $this->span_gamut += array(
- "doFootnotes" => 5,
- "doAbbreviations" => 70,
- );
-
- parent::__construct();
- }
-
-
- # Extra variables used during extra transformations.
- protected $footnotes = array();
- protected $footnotes_ordered = array();
- protected $footnotes_ref_count = array();
- protected $footnotes_numbers = array();
- protected $abbr_desciptions = array();
- protected $abbr_word_re = '';
-
- # Give the current footnote number.
- protected $footnote_counter = 1;
-
-
- protected function setup() {
- #
- # Setting up Extra-specific variables.
- #
- parent::setup();
-
- $this->footnotes = array();
- $this->footnotes_ordered = array();
- $this->footnotes_ref_count = array();
- $this->footnotes_numbers = array();
- $this->abbr_desciptions = array();
- $this->abbr_word_re = '';
- $this->footnote_counter = 1;
-
- foreach ($this->predef_abbr as $abbr_word => $abbr_desc) {
- if ($this->abbr_word_re)
- $this->abbr_word_re .= '|';
- $this->abbr_word_re .= preg_quote($abbr_word);
- $this->abbr_desciptions[$abbr_word] = trim($abbr_desc);
- }
- }
-
- protected function teardown() {
- #
- # Clearing Extra-specific variables.
- #
- $this->footnotes = array();
- $this->footnotes_ordered = array();
- $this->footnotes_ref_count = array();
- $this->footnotes_numbers = array();
- $this->abbr_desciptions = array();
- $this->abbr_word_re = '';
-
- parent::teardown();
- }
-
-
- ### Extra Attribute Parser ###
-
- # Expression to use to catch attributes (includes the braces)
- protected $id_class_attr_catch_re = '\{((?:[ ]*[#.][-_:a-zA-Z0-9]+){1,})[ ]*\}';
- # Expression to use when parsing in a context when no capture is desired
- protected $id_class_attr_nocatch_re = '\{(?:[ ]*[#.][-_:a-zA-Z0-9]+){1,}[ ]*\}';
-
- protected function doExtraAttributes($tag_name, $attr) {
- #
- # Parse attributes caught by the $this->id_class_attr_catch_re expression
- # and return the HTML-formatted list of attributes.
- #
- # Currently supported attributes are .class and #id.
- #
- if (empty($attr)) return "";
-
- # Split on components
- preg_match_all('/[#.][-_:a-zA-Z0-9]+/', $attr, $matches);
- $elements = $matches[0];
-
- # handle classes and ids (only first id taken into account)
- $classes = array();
- $id = false;
- foreach ($elements as $element) {
- if ($element{0} == '.') {
- $classes[] = substr($element, 1);
- } else if ($element{0} == '#') {
- if ($id === false) $id = substr($element, 1);
- }
- }
-
- # compose attributes as string
- $attr_str = "";
- if (!empty($id)) {
- $attr_str .= ' id="'.$id.'"';
- }
- if (!empty($classes)) {
- $attr_str .= ' class="'.implode(" ", $classes).'"';
- }
- return $attr_str;
- }
-
-
- protected function stripLinkDefinitions($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];
- $this->urls[$link_id] = $url;
- $this->titles[$link_id] =& $matches[4];
- $this->ref_attr[$link_id] = $this->doExtraAttributes("", $dummy =& $matches[5]);
- return ''; # String that will replace the block
- }
-
-
- ### HTML Block Parser ###
-
- # Tags that are always treated as block tags:
- protected $block_tags_re = 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|address|form|fieldset|iframe|hr|legend|article|section|nav|aside|hgroup|header|footer|figcaption|figure';
-
- # Tags treated as block tags only if the opening tag is alone on its line:
- protected $context_block_tags_re = 'script|noscript|style|ins|del|iframe|object|source|track|param|math|svg|canvas|audio|video';
-
- # Tags where markdown="1" default to span mode:
- protected $contain_span_tags_re = 'p|h[1-6]|li|dd|dt|td|th|legend|address';
-
- # Tags which must not have their contents modified, no matter where
- # they appear:
- protected $clean_tags_re = 'script|style|math|svg';
-
- # Tags that do not need to be closed.
- protected $auto_close_tags_re = 'hr|img|param|source|track';
-
-
- protected function hashHTMLBlocks($text) {
- #
- # Hashify HTML Blocks and "clean tags".
- #
- # We only want to do this for block-level HTML tags, such as headers,
- # lists, and tables. That's because we still want to wrap <p>s around
- # "paragraphs" that are wrapped in non-block-level tags, such as anchors,
- # phrase emphasis, and spans. The list of tags we're looking for is
- # hard-coded.
- #
- # This works by calling _HashHTMLBlocks_InMarkdown, which then calls
- # _HashHTMLBlocks_InHTML when it encounter block tags. When the markdown="1"
- # attribute is found within a tag, _HashHTMLBlocks_InHTML calls back
- # _HashHTMLBlocks_InMarkdown to handle the Markdown syntax within the tag.
- # These two functions are calling each other. It's recursive!
- #
- if ($this->no_markup) return $text;
-
- #
- # Call the HTML-in-Markdown hasher.
- #
- list($text, ) = $this->_hashHTMLBlocks_inMarkdown($text);
-
- return $text;
- }
- protected function _hashHTMLBlocks_inMarkdown($text, $indent = 0,
- $enclosing_tag_re = '', $span = false)
- {
- #
- # Parse markdown text, calling _HashHTMLBlocks_InHTML for block tags.
- #
- # * $indent is the number of space to be ignored when checking for code
- # blocks. This is important because if we don't take the indent into
- # account, something like this (which looks right) won't work as expected:
- #
- # <div>
- # <div markdown="1">
- # Hello World. <-- Is this a Markdown code block or text?
- # </div> <-- Is this a Markdown code block or a real tag?
- # <div>
- #
- # If you don't like this, just don't indent the tag on which
- # you apply the markdown="1" attribute.
- #
- # * If $enclosing_tag_re is not empty, stops at the first unmatched closing
- # tag with that name. Nested tags supported.
- #
- # * If $span is true, text inside must treated as span. So any double
- # newline will be replaced by a single newline so that it does not create
- # paragraphs.
- #
- # Returns an array of that form: ( processed text , remaining text )
- #
- if ($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("", ':');
- $newline = "$void\n";
- $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.
- $tag_re = preg_quote($tag); # For use in a regular expression.
-
- #
- # 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,
- $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.'(?!`)}',
- $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} == '/') $depth--;
- else if ($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, $text);
- }
- protected function _hashHTMLBlocks_inHTML($text, $hash_method, $md_attr) {
- #
- # Parse HTML, calling _HashHTMLBlocks_InMarkdown for block tags.
- #
- # * Calls $hash_method to convert any blocks.
- # * Stops when the first opening tag closes.
- # * $md_attr indicate if the use of the `markdown="1"` attribute is allowed.
- # (it is not inside clean tags)
- #
- # Returns an array of that form: ( processed text , remaining text )
- #
- if ($text === '') return array('', '');
-
- # Regex to match `markdown` attribute inside of a tag.
- $markdown_attr_re = '
- {
- \s* # Eat whitespace before the `markdown` attribute
- markdown
- \s*=\s*
- (?>
- (["\']) # $1: quote delimiter
- (.*?) # $2: attribute value
- \1 # matching delimiter
- |
- ([^\s>]*) # $3: unquoted attribute value
- )
- () # $4: make $3 always defined (avoid warnings)
- }xs';
-
- # Regex to match any tag.
- $tag_re = '{
- ( # $2: Capture whole tag.
- </? # Any opening or closing tag.
- [\w:$]+ # Tag name.
- (?:
- (?=[\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
- )
- }xs';
-
- $original_text = $text; # Save original text in case of faliure.
-
- $depth = 0; # Current depth inside the tag tree.
- $block_text = ""; # Temporary text holder for current text.
- $parsed = ""; # Parsed text that will be returned.
-
- #
- # Get the name of the starting tag.
- # (This pattern makes $base_tag_name_re safe without quoting.)
- #
- if (preg_match('/^<([\w:$]*)\b/', $text, $matches))
- $base_tag_name_re = $matches[1];
-
- #
- # Loop through every tag until we find the corresponding closing tag.
- #
- 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.
- #
- $parts = preg_split($tag_re, $text, 2, PREG_SPLIT_DELIM_CAPTURE);
-
- if (count($parts) < 3) {
- #
- # End of $text reached with unbalenced tag(s).
- # In that case, we return original text unchanged and pass the
- # first character as filtered to prevent an infinite loop in the
- # parent function.
- #
- return array($original_text{0}, substr($original_text, 1));
- }
-
- $block_text .= $parts[0]; # Text before current tag.
- $tag = $parts[1]; # Tag to handle.
- $text = $parts[2]; # Remaining text after current tag.
-
- #
- # Check for: Auto-close tag (like <hr/>)
- # Comments and Processing Instructions.
- #
- if (preg_match('{^</?(?:'.$this->auto_close_tags_re.')\b}', $tag) ||
- $tag{1} == '!' || $tag{1} == '?')
- {
- # Just add the tag to the block as if it was text.
- $block_text .= $tag;
- }
- else {
- #
- # Increase/decrease nested tag count. Only do so if
- # the tag's name match base tag's.
- #
- if (preg_match('{^</?'.$base_tag_name_re.'\b}', $tag)) {
- if ($tag{1} == '/') $depth--;
- else if ($tag{strlen($tag)-2} != '/') $depth++;
- }
-
- #
- # Check for `markdown="1"` attribute and handle it.
- #
- if ($md_attr &&
- preg_match($markdown_attr_re, $tag, $attr_m) &&
- preg_match('/^1|block|span$/', $attr_m[2] . $attr_m[3]))
- {
- # Remove `markdown` attribute from opening tag.
- $tag = preg_replace($markdown_attr_re, '', $tag);
-
- # Check if text inside this tag must be parsed in span mode.
- $this->mode = $attr_m[2] . $attr_m[3];
- $span_mode = $this->mode == 'span' || $this->mode != 'block' &&
- preg_match('{^<(?:'.$this->contain_span_tags_re.')\b}', $tag);
-
- # Calculate indent before tag.
- if (preg_match('/(?:^|\n)( *?)(?! ).*?$/', $block_text, $matches)) {
- $strlen = $this->utf8_strlen;
- $indent = $strlen($matches[1], 'UTF-8');
- } else {
- $indent = 0;
- }
-
- # End preceding block with this tag.
- $block_text .= $tag;
- $parsed .= $this->$hash_method($block_text);
-
- # Get enclosing tag name for the ParseMarkdown function.
- # (This pattern makes $tag_name_re safe without quoting.)
- preg_match('/^<([\w:$]*)\b/', $tag, $matches);
- $tag_name_re = $matches[1];
-
- # Parse the content using the HTML-in-Markdown parser.
- list ($block_text, $text)
- = $this->_hashHTMLBlocks_inMarkdown($text, $indent,
- $tag_name_re, $span_mode);
-
- # Outdent markdown text.
- if ($indent > 0) {
- $block_text = preg_replace("/^[ ]{1,$indent}/m", "",
- $block_text);
- }
-
- # Append tag content to parsed text.
- if (!$span_mode) $parsed .= "\n\n$block_text\n\n";
- else $parsed .= "$block_text";
-
- # Start over with a new block.
- $block_text = "";
- }
- else $block_text .= $tag;
- }
-
- } while ($depth > 0);
-
- #
- # Hash last block text that wasn't processed inside the loop.
- #
- $parsed .= $this->$hash_method($block_text);
-
- return array($parsed, $text);
- }
-
-
- protected function hashClean($text) {
- #
- # Called whenever a tag must be hashed when a function inserts a "clean" tag
- # in $text, it passes through this function and is automaticaly escaped,
- # blocking invalid nested overlap.
- #
- return $this->hashPart($text, 'C');
- }
-
-
- protected function doAnchors($text) {
- #
- # Turn Markdown link shortcuts into XHTML <a> tags.
- #
- if ($this->in_anchor) return $text;
- $this->in_anchor = true;
-
- #
- # First, handle reference-style links: [link text] [id]
- #
- $text = preg_replace_callback('{
- ( # wrap whole match in $1
- \[
- ('.$this->nested_brackets_re.') # link text = $2
- \]
-
- [ ]? # one optional space
- (?:\n[ ]*)? # one optional newline followed by spaces
-
- \[
- (.*?) # id = $3
- \]
- )
- }xs',
- array($this, '_doAnchors_reference_callback'), $text);
-
- #
- # Next, inline-style links: [link text](url "optional title")
- #
- $text = preg_replace_callback('{
- ( # wrap whole match in $1
- \[
- ('.$this->nested_brackets_re.') # link text = $2
- \]
- \( # literal paren
- [ \n]*
- (?:
- <(.+?)> # href = $3
- |
- ('.$this->nested_url_parenthesis_re.') # href = $4
- )
- [ \n]*
- ( # $5
- ([\'"]) # quote char = $6
- (.*?) # Title = $7
- \6 # matching quote
- [ \n]* # ignore any spaces/tabs between closing quote and )
- )? # title is optional
- \)
- (?:[ ]? '.$this->id_class_attr_catch_re.' )? # $8 = id/class attributes
- )
- }xs',
- array($this, '_doAnchors_inline_callback'), $text);
-
- #
- # Last, handle reference-style shortcuts: [link text]
- # These must come last in case you've also got [link text][1]
- # or [link text](/foo)
- #
- $text = preg_replace_callback('{
- ( # wrap whole match in $1
- \[
- ([^\[\]]+) # link text = $2; can\'t contain [ or ]
- \]
- )
- }xs',
- array($this, '_doAnchors_reference_callback'), $text);
-
- $this->in_anchor = false;
- return $text;
- }
- protected function _doAnchors_reference_callback($matches) {
- $whole_match = $matches[1];
- $link_text = $matches[2];
- $link_id =& $matches[3];
-
- if ($link_id == "") {
- # for shortcut links like [this][] or [this].
- $link_id = $link_text;
- }
-
- # lower-case and turn embedded newlines into spaces
- $link_id = strtolower($link_id);
- $link_id = preg_replace('{[ ]?\n}', ' ', $link_id);
-
- if (isset($this->urls[$link_id])) {
- $url = $this->urls[$link_id];
- $url = $this->encodeURLAttribute($url);
-
- $result = "<a href=\"$url\"";
- if ( isset( $this->titles[$link_id] ) ) {
- $title = $this->titles[$link_id];
- $title = $this->encodeAttribute($title);
- $result .= " title=\"$title\"";
- }
- if (isset($this->ref_attr[$link_id]))
- $result .= $this->ref_attr[$link_id];
-
- $link_text = $this->runSpanGamut($link_text);
- $result .= ">$link_text</a>";
- $result = $this->hashPart($result);
- }
- else {
- $result = $whole_match;
- }
- return $result;
- }
- protected function _doAnchors_inline_callback($matches) {
- $whole_match = $matches[1];
- $link_text = $this->runSpanGamut($matches[2]);
- $url = $matches[3] == '' ? $matches[4] : $matches[3];
- $title =& $matches[7];
- $attr = $this->doExtraAttributes("a", $dummy =& $matches[8]);
-
- // if the URL was of the form <s p a c e s> it got caught by the HTML
- // tag parser and hashed. Need to reverse the process before using the URL.
- $unhashed = $this->unhash($url);
- if ($unhashed != $url)
- $url = preg_replace('/^<(.*)>$/', '\1', $unhashed);
-
- $url = $this->encodeURLAttribute($url);
-
- $result = "<a href=\"$url\"";
- if (isset($title)) {
- $title = $this->encodeAttribute($title);
- $result .= " title=\"$title\"";
- }
- $result .= $attr;
-
- $link_text = $this->runSpanGamut($link_text);
- $result .= ">$link_text</a>";
-
- return $this->hashPart($result);
- }
-
-
- protected function doImages($text) {
- #
- # Turn Markdown image shortcuts into <img> tags.
- #
- #
- # First, handle reference-style labeled images: ![alt text][id]
- #
- $text = preg_replace_callback('{
- ( # wrap whole match in $1
- !\[
- ('.$this->nested_brackets_re.') # alt text = $2
- \]
-
- [ ]? # one optional space
- (?:\n[ ]*)? # one optional newline followed by spaces
-
- \[
- (.*?) # id = $3
- \]
-
- )
- }xs',
- array($this, '_doImages_reference_callback'), $text);
-
- #
- # Next, handle inline images: 
- # Don't forget: encode * and _
- #
- $text = preg_replace_callback('{
- ( # wrap whole match in $1
- !\[
- ('.$this->nested_brackets_re.') # alt text = $2
- \]
- \s? # One optional whitespace character
- \( # literal paren
- [ \n]*
- (?:
- <(\S*)> # src url = $3
- |
- ('.$this->nested_url_parenthesis_re.') # src url = $4
- )
- [ \n]*
- ( # $5
- ([\'"]) # quote char = $6
- (.*?) # title = $7
- \6 # matching quote
- [ \n]*
- )? # title is optional
- \)
- (?:[ ]? '.$this->id_class_attr_catch_re.' )? # $8 = id/class attributes
- )
- }xs',
- array($this, '_doImages_inline_callback'), $text);
-
- return $text;
- }
- protected function _doImages_reference_callback($matches) {
- $whole_match = $matches[1];
- $alt_text = $matches[2];
- $link_id = strtolower($matches[3]);
-
- if ($link_id == "") {
- $link_id = strtolower($alt_text); # for shortcut links like ![this][].
- }
-
- $alt_text = $this->encodeAttribute($alt_text);
- if (isset($this->urls[$link_id])) {
- $url = $this->encodeURLAttribute($this->urls[$link_id]);
- $result = "<img src=\"$url\" alt=\"$alt_text\"";
- if (isset($this->titles[$link_id])) {
- $title = $this->titles[$link_id];
- $title = $this->encodeAttribute($title);
- $result .= " title=\"$title\"";
- }
- if (isset($this->ref_attr[$link_id]))
- $result .= $this->ref_attr[$link_id];
- $result .= $this->empty_element_suffix;
- $result = $this->hashPart($result);
- }
- else {
- # If there's no such link ID, leave intact:
- $result = $whole_match;
- }
-
- return $result;
- }
- protected function _doImages_inline_callback($matches) {
- $whole_match = $matches[1];
- $alt_text = $matches[2];
- $url = $matches[3] == '' ? $matches[4] : $matches[3];
- $title =& $matches[7];
- $attr = $this->doExtraAttributes("img", $dummy =& $matches[8]);
-
- $alt_text = $this->encodeAttribute($alt_text);
- $url = $this->encodeURLAttribute($url);
- $result = "<img src=\"$url\" alt=\"$alt_text\"";
- if (isset($title)) {
- $title = $this->encodeAttribute($title);
- $result .= " title=\"$title\""; # $title already quoted
- }
- $result .= $attr;
- $result .= $this->empty_element_suffix;
-
- return $this->hashPart($result);
- }
-
-
- protected function doHeaders($text) {
- #
- # Redefined to add id and class attribute support.
- #
- # Setext-style headers:
- # Header 1 {#header1}
- # ========
- #
- # Header 2 {#header2 .class1 .class2}
- # --------
- #
- $text = preg_replace_callback(
- '{
- (^.+?) # $1: Header text
- (?:[ ]+ '.$this->id_class_attr_catch_re.' )? # $3 = id/class attributes
- [ ]*\n(=+|-+)[ ]*\n+ # $3: Header footer
- }mx',
- array($this, '_doHeaders_callback_setext'), $text);
-
- # atx-style headers:
- # # Header 1 {#header1}
- # ## Header 2 {#header2}
- # ## Header 2 with closing hashes ## {#header3.class1.class2}
- # ...
- # ###### Header 6 {.class2}
- #
- $text = preg_replace_callback('{
- ^(\#{1,6}) # $1 = string of #\'s
- [ ]*
- (.+?) # $2 = Header text
- [ ]*
- \#* # optional closing #\'s (not counted)
- (?:[ ]+ '.$this->id_class_attr_catch_re.' )? # $3 = id/class attributes
- [ ]*
- \n+
- }xm',
- array($this, '_doHeaders_callback_atx'), $text);
-
- return $text;
- }
- protected function _doHeaders_callback_setext($matches) {
- if ($matches[3] == '-' && preg_match('{^- }', $matches[1]))
- return $matches[0];
- $level = $matches[3]{0} == '=' ? 1 : 2;
- $attr = $this->doExtraAttributes("h$level", $dummy =& $matches[2]);
- $block = "<h$level$attr>".$this->runSpanGamut($matches[1])."</h$level>";
- return "\n" . $this->hashBlock($block) . "\n\n";
- }
- protected function _doHeaders_callback_atx($matches) {
- $level = strlen($matches[1]);
- $attr = $this->doExtraAttributes("h$level", $dummy =& $matches[3]);
- $block = "<h$level$attr>".$this->runSpanGamut($matches[2])."</h$level>";
- return "\n" . $this->hashBlock($block) . "\n\n";
- }
-
-
- protected function doTables($text) {
- #
- # Form HTML tables.
- #
- $less_than_tab = $this->tab_width - 1;
- #
- # Find tables with leading pipe.
- #
- # | Header 1 | Header 2
- # | -------- | --------
- # | Cell 1 | Cell 2
- # | Cell 3 | Cell 4
- #
- $text = preg_replace_callback('
- {
- ^ # Start of a line
- [ ]{0,'.$less_than_tab.'} # Allowed whitespace.
- [|] # Optional leading pipe (present)
- (.+) \n # $1: Header row (at least one pipe)
-
- [ ]{0,'.$less_than_tab.'} # Allowed whitespace.
- [|] ([ ]*[-:]+[-| :]*) \n # $2: Header underline
-
- ( # $3: Cells
- (?>
- [ ]* # Allowed whitespace.
- [|] .* \n # Row content.
- )*
- )
- (?=\n|\Z) # Stop at final double newline.
- }xm',
- array($this, '_doTable_leadingPipe_callback'), $text);
-
- #
- # Find tables without leading pipe.
- #
- # Header 1 | Header 2
- # -------- | --------
- # Cell 1 | Cell 2
- # Cell 3 | Cell 4
- #
- $text = preg_replace_callback('
- {
- ^ # Start of a line
- [ ]{0,'.$less_than_tab.'} # Allowed whitespace.
- (\S.*[|].*) \n # $1: Header row (at least one pipe)
-
- [ ]{0,'.$less_than_tab.'} # Allowed whitespace.
- ([-:]+[ ]*[|][-| :]*) \n # $2: Header underline
-
- ( # $3: Cells
- (?>
- .* [|] .* \n # Row content
- )*
- )
- (?=\n|\Z) # Stop at final double newline.
- }xm',
- array($this, '_DoTable_callback'), $text);
-
- return $text;
- }
- protected function _doTable_leadingPipe_callback($matches) {
- $head = $matches[1];
- $underline = $matches[2];
- $content = $matches[3];
-
- # Remove leading pipe for each row.
- $content = preg_replace('/^ *[|]/m', '', $content);
-
- return $this->_doTable_callback(array($matches[0], $head, $underline, $content));
- }
- protected function _doTable_makeAlignAttr($alignname)
- {
- if (empty($this->table_align_class_tmpl))
- return " align=\"$alignname\"";
-
- $classname = str_replace('%%', $alignname, $this->table_align_class_tmpl);
- return " class=\"$classname\"";
- }
- protected function _doTable_callback($matches) {
- $head = $matches[1];
- $underline = $matches[2];
- $content = $matches[3];
-
- # Remove any tailing pipes for each line.
- $head = preg_replace('/[|] *$/m', '', $head);
- $underline = preg_replace('/[|] *$/m', '', $underline);
- $content = preg_replace('/[|] *$/m', '', $content);
-
- # Reading alignement from header underline.
- $separators = preg_split('/ *[|] */', $underline);
- foreach ($separators as $n => $s) {
- if (preg_match('/^ *-+: *$/', $s))
- $attr[$n] = $this->_doTable_makeAlignAttr('right');
- else if (preg_match('/^ *:-+: *$/', $s))
- $attr[$n] = $this->_doTable_makeAlignAttr('center');
- else if (preg_match('/^ *:-+ *$/', $s))
- $attr[$n] = $this->_doTable_makeAlignAttr('left');
- else
- $attr[$n] = '';
- }
-
- # Parsing span elements, including code spans, character escapes,
- # and inline HTML tags, so that pipes inside those gets ignored.
- $head = $this->parseSpan($head);
- $headers = preg_split('/ *[|] */', $head);
- $col_count = count($headers);
- $attr = array_pad($attr, $col_count, '');
-
- # Write column headers.
- $text = "<table>\n";
- $text .= "<thead>\n";
- $text .= "<tr>\n";
- foreach ($headers as $n => $header)
- $text .= " <th$attr[$n]>".$this->runSpanGamut(trim($header))."</th>\n";
- $text .= "</tr>\n";
- $text .= "</thead>\n";
-
- # Split content by row.
- $rows = explode("\n", trim($content, "\n"));
-
- $text .= "<tbody>\n";
- foreach ($rows as $row) {
- # Parsing span elements, including code spans, character escapes,
- # and inline HTML tags, so that pipes inside those gets ignored.
- $row = $this->parseSpan($row);
-
- # Split row by cell.
- $row_cells = preg_split('/ *[|] */', $row, $col_count);
- $row_cells = array_pad($row_cells, $col_count, '');
-
- $text .= "<tr>\n";
- foreach ($row_cells as $n => $cell)
- $text .= " <td$attr[$n]>".$this->runSpanGamut(trim($cell))."</td>\n";
- $text .= "</tr>\n";
- }
- $text .= "</tbody>\n";
- $text .= "</table>";
-
- return $this->hashBlock($text) . "\n";
- }
-
-
- protected function doDefLists($text) {
- #
- # Form HTML definition lists.
- #
- # Prevent unescaped text, security bugfix for https://github.com/michelf/php-markdown/issues/175
- if ($this->no_markup) return $text;
-
- $less_than_tab = $this->tab_width - 1;
-
- # Re-usable pattern to match any entire dl list:
- $whole_list_re = '(?>
- ( # $1 = whole list
- ( # $2
- [ ]{0,'.$less_than_tab.'}
- ((?>.*\S.*\n)+) # $3 = defined term
- \n?
- [ ]{0,'.$less_than_tab.'}:[ ]+ # colon starting definition
- )
- (?s:.+?)
- ( # $4
- \z
- |
- \n{2,}
- (?=\S)
- (?! # Negative lookahead for another term
- [ ]{0,'.$less_than_tab.'}
- (?: \S.*\n )+? # defined term
- \n?
- [ ]{0,'.$less_than_tab.'}:[ ]+ # colon starting definition
- )
- (?! # Negative lookahead for another definition
- [ ]{0,'.$less_than_tab.'}:[ ]+ # colon starting definition
- )
- )
- )
- )'; // mx
-
- $text = preg_replace_callback('{
- (?>\A\n?|(?<=\n\n))
- '.$whole_list_re.'
- }mx',
- array($this, '_doDefLists_callback'), $text);
-
- return $text;
- }
- protected function _doDefLists_callback($matches) {
- # Re-usable patterns to match list item bullets and number markers:
- $list = $matches[1];
-
- # Turn double returns into triple returns, so that we can make a
- # paragraph for the last item in a list, if necessary:
- $result = trim($this->processDefListItems($list));
- $result = "<dl>\n" . $result . "\n</dl>";
- return $this->hashBlock($result) . "\n\n";
- }
-
-
- protected function processDefListItems($list_str) {
- #
- # Process the contents of a single definition list, splitting it
- # into individual term and definition list items.
- #
- $less_than_tab = $this->tab_width - 1;
-
- # trim trailing blank lines:
- $list_str = preg_replace("/\n{2,}\\z/", "\n", $list_str);
-
- # Process definition terms.
- $list_str = preg_replace_callback('{
- (?>\A\n?|\n\n+) # leading line
- ( # definition terms = $1
- [ ]{0,'.$less_than_tab.'} # leading whitespace
- (?!\:[ ]|[ ]) # negative lookahead for a definition
- # mark (colon) or more whitespace.
- (?> \S.* \n)+? # actual term (not whitespace).
- )
- (?=\n?[ ]{0,3}:[ ]) # lookahead for following line feed
- # with a definition mark.
- }xm',
- array($this, '_processDefListItems_callback_dt'), $list_str);
-
- # Process actual definitions.
- $list_str = preg_replace_callback('{
- \n(\n+)? # leading line = $1
- ( # marker space = $2
- [ ]{0,'.$less_than_tab.'} # whitespace before colon
- \:[ ]+ # definition mark (colon)
- )
- ((?s:.+?)) # definition text = $3
- (?= \n+ # stop at next definition mark,
- (?: # next term or end of text
- [ ]{0,'.$less_than_tab.'} \:[ ] |
- <dt> | \z
- )
- )
- }xm',
- array($this, '_processDefListItems_callback_dd'), $list_str);
-
- return $list_str;
- }
- protected function _processDefListItems_callback_dt($matches) {
- $terms = explode("\n", trim($matches[1]));
- $text = '';
- foreach ($terms as $term) {
- $term = $this->runSpanGamut(trim($term));
- $text .= "\n<dt>" . $term . "</dt>";
- }
- return $text . "\n";
- }
- protected function _processDefListItems_callback_dd($matches) {
- $leading_line = $matches[1];
- $marker_space = $matches[2];
- $def = $matches[3];
-
- if ($leading_line || preg_match('/\n{2,}/', $def)) {
- # Replace marker with the appropriate whitespace indentation
- $def = str_repeat(' ', strlen($marker_space)) . $def;
- $def = $this->runBlockGamut($this->outdent($def . "\n\n"));
- $def = "\n". $def ."\n";
- }
- else {
- $def = rtrim($def);
- $def = $this->runSpanGamut($this->outdent($def));
- }
-
- return "\n<dd>" . $def . "</dd>\n";
- }
-
-
- protected function doFencedCodeBlocks($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];
- $codeblock = $matches[4];
- $codeblock = htmlspecialchars($codeblock, ENT_NOQUOTES);
- $codeblock = preg_replace_callback('/^\n+/',
- array($this, '_doFencedCodeBlocks_newlines'), $codeblock);
-
- if ($classname != "") {
- if ($classname{0} == '.')
- $classname = substr($classname, 1);
- $attr_str = ' class="'.$this->code_class_prefix.$classname.'"';
- } else {
- $attr_str = $this->doExtraAttributes($this->code_attr_on_pre ? "pre" : "code", $attrs);
- }
- $pre_attr_str = $this->code_attr_on_pre ? $attr_str : '';
- $code_attr_str = $this->code_attr_on_pre ? '' : $attr_str;
- $codeblock = "<pre$pre_attr_str><code$code_attr_str>$codeblock</code></pre>";
-
- return "\n\n".$this->hashBlock($codeblock)."\n\n";
- }
- protected function _doFencedCodeBlocks_newlines($matches) {
- return str_repeat("<br$this->empty_element_suffix",
- strlen($matches[0]));
- }
-
-
- #
- # Redefining emphasis markers so that emphasis by underscore does not
- # work in the middle of a word.
- #
- protected $em_relist = array(
- '' => '(?:(?<!\*)\*(?!\*)|(?<![a-zA-Z0-9_])_(?!_))(?![\.,:;]?\s)',
- '*' => '(?<![\s*])\*(?!\*)',
- '_' => '(?<![\s_])_(?![a-zA-Z0-9_])',
- );
- protected $strong_relist = array(
- '' => '(?:(?<!\*)\*\*(?!\*)|(?<![a-zA-Z0-9_])__(?!_))(?![\.,:;]?\s)',
- '**' => '(?<![\s*])\*\*(?!\*)',
- '__' => '(?<![\s_])__(?![a-zA-Z0-9_])',
- );
- protected $em_strong_relist = array(
- '' => '(?:(?<!\*)\*\*\*(?!\*)|(?<![a-zA-Z0-9_])___(?!_))(?![\.,:;]?\s)',
- '***' => '(?<![\s*])\*\*\*(?!\*)',
- '___' => '(?<![\s_])___(?![a-zA-Z0-9_])',
- );
-
-
- protected function formParagraphs($text) {
- #
- # Params:
- # $text - string to process with html <p> tags
- #
- # Strip leading and trailing lines:
- $text = preg_replace('/\A\n+|\n+\z/', '', $text);
-
- $grafs = preg_split('/\n{2,}/', $text, -1, PREG_SPLIT_NO_EMPTY);
-
- #
- # Wrap <p> tags and unhashify HTML blocks
- #
- foreach ($grafs as $key => $value) {
- $value = trim($this->runSpanGamut($value));
-
- # Check if this should be enclosed in a paragraph.
- # Clean tag hashes & block tag hashes are left alone.
- $is_p = !preg_match('/^B\x1A[0-9]+B|^C\x1A[0-9]+C$/', $value);
-
- if ($is_p) {
- $value = "<p>$value</p>";
- }
- $grafs[$key] = $value;
- }
-
- # Join grafs in one text, then unhash HTML tags.
- $text = implode("\n\n", $grafs);
-
- # Finish by removing any tag hashes still present in $text.
- $text = $this->unhash($text);
-
- return $text;
- }
-
-
- ### Footnotes
-
- protected function stripFootnotes($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 or link definition 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]);
- return ''; # String that will replace the block
- }
-
-
- protected function doFootnotes($text) {
- #
- # Replace footnote references in $text [^id] with a special text-token
- # which will be replaced by the actual footnote marker in appendFootnotes.
- #
- if (!$this->in_anchor) {
- $text = preg_replace('{\[\^(.+?)\]}', "F\x1Afn:\\1\x1A:", $text);
- }
- return $text;
- }
-
-
- protected function appendFootnotes($text) {
- #
- # Append footnote list to text.
- #
- $text = preg_replace_callback('{F\x1Afn:(.*?)\x1A:}',
- array($this, '_appendFootnotes_callback'), $text);
-
- if (!empty($this->footnotes_ordered)) {
- $text .= "\n\n";
- $text .= "<div class=\"footnotes\">\n";
- $text .= "<hr". $this->empty_element_suffix ."\n";
- $text .= "<ol>\n\n";
-
- $attr = "";
- if ($this->fn_backlink_class != "") {
- $class = $this->fn_backlink_class;
- $class = $this->encodeAttribute($class);
- $attr .= " class=\"$class\"";
- }
- if ($this->fn_backlink_title != "") {
- $title = $this->fn_backlink_title;
- $title = $this->encodeAttribute($title);
- $attr .= " title=\"$title\"";
- }
- $num = 0;
-
- while (!empty($this->footnotes_ordered)) {
- $footnote = reset($this->footnotes_ordered);
- $note_id = key($this->footnotes_ordered);
- unset($this->footnotes_ordered[$note_id]);
- $ref_count = $this->footnotes_ref_count[$note_id];
- unset($this->footnotes_ref_count[$note_id]);
- unset($this->footnotes[$note_id]);
-
- $footnote .= "\n"; # Need to append newline before parsing.
- $footnote = $this->runBlockGamut("$footnote\n");
- $footnote = preg_replace_callback('{F\x1Afn:(.*?)\x1A:}',
- array($this, '_appendFootnotes_callback'), $footnote);
-
- $attr = str_replace("%%", ++$num, $attr);
- $note_id = $this->encodeAttribute($note_id);
-
- # Prepare backlink, multiple backlinks if multiple references
- $backlink = "<a href=\"#fnref:$note_id\"$attr>↩</a>";
- for ($ref_num = 2; $ref_num <= $ref_count; ++$ref_num) {
- $backlink .= " <a href=\"#fnref$ref_num:$note_id\"$attr>↩</a>";
- }
- # Add backlink to last paragraph; create new paragraph if needed.
- if (preg_match('{</p>$}', $footnote)) {
- $footnote = substr($footnote, 0, -4) . " $backlink</p>";
- } else {
- $footnote .= "\n\n<p>$backlink</p>";
- }
-
- $text .= "<li id=\"fn:$note_id\">\n";
- $text .= $footnote . "\n";
- $text .= "</li>\n\n";
- }
-
- $text .= "</ol>\n";
- $text .= "</div>";
- }
- return $text;
- }
- protected function _appendFootnotes_callback($matches) {
- $node_id = $this->fn_id_prefix . $matches[1];
-
- # Create footnote marker only if it has a corresponding footnote *and*
- # the footnote hasn't been used by another marker.
- if (isset($this->footnotes[$node_id])) {
- $num =& $this->footnotes_numbers[$node_id];
- if (!isset($num)) {
- # Transfer footnote content to the ordered list and give it its
- # number
- $this->footnotes_ordered[$node_id] = $this->footnotes[$node_id];
- $this->footnotes_ref_count[$node_id] = 1;
- $num = $this->footnote_counter++;
- $ref_count_mark = '';
- } else {
- $ref_count_mark = $this->footnotes_ref_count[$node_id] += 1;
- }
-
- $attr = "";
- if ($this->fn_link_class != "") {
- $class = $this->fn_link_class;
- $class = $this->encodeAttribute($class);
- $attr .= " class=\"$class\"";
- }
- if ($this->fn_link_title != "") {
- $title = $this->fn_link_title;
- $title = $this->encodeAttribute($title);
- $attr .= " title=\"$title\"";
- }
-
- $attr = str_replace("%%", $num, $attr);
- $node_id = $this->encodeAttribute($node_id);
-
- return
- "<sup id=\"fnref$ref_count_mark:$node_id\">".
- "<a href=\"#fn:$node_id\"$attr>$num</a>".
- "</sup>";
- }
-
- return "[^".$matches[1]."]";
- }
-
-
- ### 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 = $matches[2];
- if ($this->abbr_word_re)
- $this->abbr_word_re .= '|';
- $this->abbr_word_re .= preg_quote($abbr_word);
- $this->abbr_desciptions[$abbr_word] = trim($abbr_desc);
- return ''; # String that will replace the block
- }
-
-
- protected function doAbbreviations($text) {
- #
- # Find defined abbreviations in text and wrap them in <abbr> elements.
- #
- if ($this->abbr_word_re) {
- // cannot use the /x modifier because abbr_word_re may
- // contain significant spaces:
- $text = preg_replace_callback('{'.
- '(?<![\w\x1A])'.
- '(?:'.$this->abbr_word_re.')'.
- '(?![\w\x1A])'.
- '}',
- array($this, '_doAbbreviations_callback'), $text);
- }
- return $text;
- }
- protected function _doAbbreviations_callback($matches) {
- $abbr = $matches[0];
- if (isset($this->abbr_desciptions[$abbr])) {
- $desc = $this->abbr_desciptions[$abbr];
- if (empty($desc)) {
- return $this->hashPart("<abbr>$abbr</abbr>");
- } else {
- $desc = $this->encodeAttribute($desc);
- return $this->hashPart("<abbr title=\"$desc\">$abbr</abbr>");
- }
- } else {
- return $matches[0];
- }
- }
-
-}
-
-$yellow->plugins->register("markdownextra", "YellowMarkdownExtra", YellowMarkdownExtra::Version);
-?>
-\ No newline at end of file
diff --git a/system/plugins/example.php b/system/plugins/example.php
@@ -1,12 +0,0 @@
-<?php
-// Copyright (c) 2013-2014 Datenstrom, http://datenstrom.se
-// This file may be used and distributed under the terms of the public license.
-
-// Example plugin
-class YellowExample
-{
- const Version = "0.0.0";
-}
-
-$yellow->plugins->register("example", "YellowExample", YellowExample::Version);
-?>
-\ No newline at end of file
diff --git a/system/plugins/markdownextra.php b/system/plugins/markdownextra.php
@@ -0,0 +1,3324 @@
+<?php
+// Copyright (c) 2013-2014 Datenstrom, http://datenstrom.se
+// This file may be used and distributed under the terms of the public license.
+
+// Markdown extra plugin
+class YellowMarkdownExtra
+{
+ const Version = "0.4.1";
+ var $yellow; //access to API
+
+ // Handle plugin initialisation
+ function onLoad($yellow)
+ {
+ $this->yellow = $yellow;
+ }
+
+ // Handle page content parsing of raw format
+ function onParseContentText($page, $text)
+ {
+ $markdown = new YellowMarkdownExtraParser($this->yellow, $page);
+ return $markdown->transform($text);
+ }
+}
+
+// Markdown extra parser
+class YellowMarkdownExtraParser extends MarkdownExtraParser
+{
+ var $yellow; //access to API
+ var $page; //access to page
+ var $idAttributes; //id attributes
+
+ function __construct($yellow, $page)
+ {
+ $this->yellow = $yellow;
+ $this->page = $page;
+ $this->idAttributes = array();
+ $this->no_markup = $page->parserSafeMode;
+ $this->no_entities = $page->parserSafeMode;
+ $this->url_filter_func = function($url) use ($yellow, $page)
+ {
+ return $yellow->toolbox->normaliseLocation($url, $page->base, $page->location,
+ $page->parserSafeMode && $page->statusCode==200);
+ };
+ parent::__construct();
+ }
+
+ // Transform text
+ function transform($text)
+ {
+ $text = preg_replace("/@pageRead/i", $this->page->get("pageRead"), $text);
+ $text = preg_replace("/@pageEdit/i", $this->page->get("pageEdit"), $text);
+ $text = preg_replace("/@pageError/i", $this->page->get("pageError"), $text);
+ return parent::transform($text);
+ }
+
+ // Return unique id attribute
+ function getIdAttribute($text)
+ {
+ $text = $this->yellow->toolbox->normaliseName($text, true, false, true);
+ $text = trim(preg_replace("/-+/", "-", $text), "-");
+ if(is_null($this->idAttributes[$text]))
+ {
+ $this->idAttributes[$text] = $text;
+ $attr = " id=\"$text\"";
+ }
+ return $attr;
+ }
+
+ // Handle links
+ function doAutoLinks($text)
+ {
+ $text = preg_replace_callback("/<(\w+:[^\'\">\s]+)>/", array(&$this, "_doAutoLinks_url_callback"), $text);
+ $text = preg_replace_callback("/<([\w\-\.]+@[\w\-\.]+)>/", array(&$this, "_doAutoLinks_email_callback"), $text);
+ $text = preg_replace_callback("/\[(\w+)\s+(.*?)\]/", array(&$this, "_doAutoLinks_shortcut_callback"), $text);
+ $text = preg_replace_callback("/\[\-\-(.*?)\-\-\]/", array(&$this, "_doAutoLinks_comment_callback"), $text);
+ $text = preg_replace_callback("/((http|https|ftp):\/\/\S+[^\'\"\,\.\;\:\s]+)/", array(&$this, "_doAutoLinks_url_callback"), $text);
+ $text = preg_replace_callback("/([\w\-\.]+@[\w\-\.]+\.[\w]{2,4})/", array(&$this, "_doAutoLinks_email_callback"), $text);
+ return $text;
+ }
+
+ // Handle shortcuts
+ function _doAutoLinks_shortcut_callback($matches)
+ {
+ $text = preg_replace("/\s+/s", " ", $matches[2]);
+ $output = $this->page->parseType($matches[1], $text, true);
+ if(is_null($output)) $output = htmlspecialchars($matches[0], ENT_NOQUOTES);
+ return $this->hashBlock($output);
+ }
+
+ // Handle comments
+ function _doAutoLinks_comment_callback($matches)
+ {
+ $text = $matches[1];
+ $output = "<!--".htmlspecialchars($text, ENT_NOQUOTES)."-->";
+ if($text[0] == '-') $output = "";
+ return $this->hashBlock($output);
+ }
+
+ // Handle fenced code blocks
+ function _doFencedCodeBlocks_callback($matches)
+ {
+ $text = $matches[4];
+ $output = $this->page->parseType($matches[2], $text, false);
+ if(is_null($output))
+ {
+ $attr = $this->doExtraAttributes("pre", $dummy =& $matches[3]);
+ $output = "<pre$attr><code>".htmlspecialchars($text, ENT_NOQUOTES)."</code></pre>";
+ }
+ return "\n\n".$this->hashBlock($output)."\n\n";
+ }
+
+ // Handle headers, text style
+ function _doHeaders_callback_setext($matches)
+ {
+ if ($matches[3] == '-' && preg_match('{^- }', $matches[1])) return $matches[0];
+ $text = $matches[1];
+ $level = $matches[3]{0} == '=' ? 1 : 2;
+ $attr = $this->doExtraAttributes("h$level", $dummy =& $matches[2]);
+ if(empty($attr) && $level==2) $attr = $this->getIdAttribute($text);
+ $output = "<h$level$attr>".$this->runSpanGamut($text)."</h$level>";
+ return "\n".$this->hashBlock($output)."\n\n";
+ }
+
+ // Handle headers, atx style
+ function _doHeaders_callback_atx($matches)
+ {
+ $text = $matches[2];
+ $level = strlen($matches[1]);
+ $attr = $this->doExtraAttributes("h$level", $dummy =& $matches[3]);
+ if(empty($attr) && $level==2) $attr = $this->getIdAttribute($text);
+ $output = "<h$level$attr>".$this->runSpanGamut($text)."</h$level>";
+ return "\n".$this->hashBlock($output)."\n\n";
+ }
+
+ // Handle inline links
+ function _doAnchors_inline_callback($matches)
+ {
+ $url = $matches[3]=="" ? $matches[4] : $matches[3];
+ $text = $matches[2];
+ $title = $matches[7];
+ $attr = $this->doExtraAttributes("a", $dummy =& $matches[8]);
+ $output = "<a href=\"".$this->encodeURLAttribute($url)."\"";
+ if(!empty($title)) $output .= " title=\"".$this->encodeAttribute($title)."\"";
+ $output .= $attr;
+ $output .= ">".$this->runSpanGamut($text)."</a>";
+ return $this->hashPart($output);
+ }
+
+ // Handle inline images
+ function _doImages_inline_callback($matches)
+ {
+ $width = $height = 0;
+ $src = $matches[3]=="" ? $matches[4] : $matches[3];
+ if(!preg_match("/^\w+:/", $src))
+ {
+ list($width, $height) = $this->yellow->toolbox->detectImageInfo($this->yellow->config->get("imageDir").$src);
+ $src = $this->yellow->config->get("serverBase").$this->yellow->config->get("imageLocation").$src;
+ }
+ $alt = $matches[2];
+ $title = $matches[7]=="" ? $matches[2] : $matches[7];
+ $attr = $this->doExtraAttributes("img", $dummy =& $matches[8]);
+ $output = "<img src=\"".$this->encodeURLAttribute($src)."\"";
+ if($width && $height) $output .= " width=\"$width\" height=\"$height\"";
+ if(!empty($alt)) $output .= " alt=\"".$this->encodeAttribute($alt)."\"";
+ if(!empty($title)) $output .= " title=\"".$this->encodeAttribute($title)."\"";
+ $output .= $attr;
+ $output .= $this->empty_element_suffix;
+ return $this->hashPart($output);
+ }
+}
+
+// PHP Markdown Lib
+// Copyright (c) 2004-2013 Michel Fortin
+// <http://michelf.com/projects/php-markdown/>
+//
+// Original Markdown
+// Copyright (c) 2004-2006 John Gruber
+// <http://daringfireball.net/projects/markdown/>
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright notice,
+// this list of conditions and the following disclaimer.
+//
+// * Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in the
+// documentation and/or other materials provided with the distribution.
+//
+// * Neither the name "Markdown" nor the names of its contributors may
+// be used to endorse or promote products derived from this software
+// without specific prior written permission.
+//
+// This software is provided by the copyright holders and contributors "as
+// is" and any express or implied warranties, including, but not limited
+// to, the implied warranties of merchantability and fitness for a
+// particular purpose are disclaimed. In no event shall the copyright owner
+// or contributors be liable for any direct, indirect, incidental, special,
+// exemplary, or consequential damages (including, but not limited to,
+// procurement of substitute goods or services; loss of use, data, or
+// profits; or business interruption) however caused and on any theory of
+// liability, whether in contract, strict liability, or tort (including
+// negligence or otherwise) arising in any way out of the use of this
+// software, even if advised of the possibility of such damage.
+
+class MarkdownParser {
+
+ ### Version ###
+
+ const MARKDOWNLIB_VERSION = "1.4.1";
+
+ ### Simple Function Interface ###
+
+ public static function defaultTransform($text) {
+ #
+ # Initialize the parser and return the result of its transform method.
+ # This will work fine for derived classes too.
+ #
+ # Take parser class on which this function was called.
+ $parser_class = \get_called_class();
+
+ # try to take parser from the static parser list
+ static $parser_list;
+ $parser =& $parser_list[$parser_class];
+
+ # create the parser it not already set
+ if (!$parser)
+ $parser = new $parser_class;
+
+ # Transform text using parser.
+ return $parser->transform($text);
+ }
+
+ ### Configuration Variables ###
+
+ # Change to ">" for HTML output.
+ public $empty_element_suffix = " />";
+ public $tab_width = 4;
+
+ # Change to `true` to disallow markup or entities.
+ public $no_markup = false;
+ public $no_entities = false;
+
+ # Predefined urls and titles for reference links and images.
+ public $predef_urls = array();
+ public $predef_titles = array();
+
+ # Optional filter function for URLs
+ public $url_filter_func = null;
+
+
+ ### Parser Implementation ###
+
+ # Regex to match balanced [brackets].
+ # Needed to insert a maximum bracked depth while converting to PHP.
+ protected $nested_brackets_depth = 6;
+ protected $nested_brackets_re;
+
+ protected $nested_url_parenthesis_depth = 4;
+ protected $nested_url_parenthesis_re;
+
+ # Table of hash values for escaped characters:
+ protected $escape_chars = '\`*_{}[]()>#+-.!';
+ protected $escape_chars_re;
+
+
+ public function __construct() {
+ #
+ # Constructor function. Initialize appropriate member variables.
+ #
+ $this->_initDetab();
+ $this->prepareItalicsAndBold();
+
+ $this->nested_brackets_re =
+ str_repeat('(?>[^\[\]]+|\[', $this->nested_brackets_depth).
+ str_repeat('\])*', $this->nested_brackets_depth);
+
+ $this->nested_url_parenthesis_re =
+ str_repeat('(?>[^()\s]+|\(', $this->nested_url_parenthesis_depth).
+ str_repeat('(?>\)))*', $this->nested_url_parenthesis_depth);
+
+ $this->escape_chars_re = '['.preg_quote($this->escape_chars).']';
+
+ # Sort document, block, and span gamut in ascendent priority order.
+ asort($this->document_gamut);
+ asort($this->block_gamut);
+ asort($this->span_gamut);
+ }
+
+
+ # Internal hashes used during transformation.
+ protected $urls = array();
+ protected $titles = array();
+ protected $html_hashes = array();
+
+ # Status flag to avoid invalid nesting.
+ protected $in_anchor = false;
+
+
+ protected function setup() {
+ #
+ # Called before the transformation process starts to setup parser
+ # states.
+ #
+ # Clear global hashes.
+ $this->urls = $this->predef_urls;
+ $this->titles = $this->predef_titles;
+ $this->html_hashes = array();
+
+ $this->in_anchor = false;
+ }
+
+ protected function teardown() {
+ #
+ # Called after the transformation process to clear any variable
+ # which may be taking up memory unnecessarly.
+ #
+ $this->urls = array();
+ $this->titles = array();
+ $this->html_hashes = array();
+ }
+
+
+ public function transform($text) {
+ #
+ # Main function. Performs some preprocessing on the input text
+ # and pass it through the document gamut.
+ #
+ $this->setup();
+
+ # Remove UTF-8 BOM and marker character in input, if present.
+ $text = preg_replace('{^\xEF\xBB\xBF|\x1A}', '', $text);
+
+ # Standardize line endings:
+ # DOS to Unix and Mac to Unix
+ $text = preg_replace('{\r\n?}', "\n", $text);
+
+ # Make sure $text ends with a couple of newlines:
+ $text .= "\n\n";
+
+ # Convert all tabs to spaces.
+ $text = $this->detab($text);
+
+ # Turn block-level HTML blocks into hash entries
+ $text = $this->hashHTMLBlocks($text);
+
+ # Strip any lines consisting only of spaces and tabs.
+ # This makes subsequent regexen easier to write, because we can
+ # match consecutive blank lines with /\n+/ instead of something
+ # contorted like /[ ]*\n+/ .
+ $text = preg_replace('/^[ ]+$/m', '', $text);
+
+ # Run document gamut methods.
+ foreach ($this->document_gamut as $method => $priority) {
+ $text = $this->$method($text);
+ }
+
+ $this->teardown();
+
+ return $text . "\n";
+ }
+
+ protected $document_gamut = array(
+ # Strip link definitions, store in hashes.
+ "stripLinkDefinitions" => 20,
+
+ "runBasicBlockGamut" => 30,
+ );
+
+
+ protected function stripLinkDefinitions($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];
+ $this->urls[$link_id] = $url;
+ $this->titles[$link_id] =& $matches[4];
+ return ''; # String that will replace the block
+ }
+
+
+ protected function hashHTMLBlocks($text) {
+ if ($this->no_markup) return $text;
+
+ $less_than_tab = $this->tab_width - 1;
+
+ # Hashify HTML blocks:
+ # We only want to do this for block-level HTML tags, such as headers,
+ # lists, and tables. That's because we still want to wrap <p>s around
+ # "paragraphs" that are wrapped in non-block-level tags, such as anchors,
+ # phrase emphasis, and spans. The list of tags we're looking for is
+ # hard-coded:
+ #
+ # * List "a" is made of tags which can be both inline or block-level.
+ # These will be treated block-level when the start tag is alone on
+ # its line, otherwise they're not matched here and will be taken as
+ # inline later.
+ # * List "b" is made of tags which are always block-level;
+ #
+ $block_tags_a_re = 'ins|del';
+ $block_tags_b_re = 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|address|'.
+ 'script|noscript|style|form|fieldset|iframe|math|svg|'.
+ 'article|section|nav|aside|hgroup|header|footer|'.
+ 'figure';
+
+ # Regular expression for the content of a block tag.
+ $nested_tags_level = 4;
+ $attr = '
+ (?> # optional tag attributes
+ \s # starts with whitespace
+ (?>
+ [^>"/]+ # text outside quotes
+ |
+ /+(?!>) # slash not followed by ">"
+ |
+ "[^"]*" # text inside double quotes (tolerate ">")
+ |
+ \'[^\']*\' # text inside single quotes (tolerate ">")
+ )*
+ )?
+ ';
+ $content =
+ str_repeat('
+ (?>
+ [^<]+ # content without tag
+ |
+ <\2 # nested opening tag
+ '.$attr.' # attributes
+ (?>
+ />
+ |
+ >', $nested_tags_level). # end of opening tag
+ '.*?'. # last level nested tag content
+ str_repeat('
+ </\2\s*> # closing nested tag
+ )
+ |
+ <(?!/\2\s*> # other tags with a different name
+ )
+ )*',
+ $nested_tags_level);
+ $content2 = str_replace('\2', '\3', $content);
+
+ # First, look for nested blocks, e.g.:
+ # <div>
+ # <div>
+ # tags for inner block must be indented.
+ # </div>
+ # </div>
+ #
+ # The outermost tags must start at the left margin for this to match, and
+ # the inner nested divs must be indented.
+ # We need to do this before the next, more liberal match, because the next
+ # match will start at the first `<div>` and stop at the first `</div>`.
+ $text = preg_replace_callback('{(?>
+ (?>
+ (?<=\n) # Starting on its own line
+ | # or
+ \A\n? # the at beginning of the doc
+ )
+ ( # save in $1
+
+ # Match from `\n<tag>` to `</tag>\n`, handling nested tags
+ # in between.
+
+ [ ]{0,'.$less_than_tab.'}
+ <('.$block_tags_b_re.')# start tag = $2
+ '.$attr.'> # attributes followed by > and \n
+ '.$content.' # content, support nesting
+ </\2> # the matching end tag
+ [ ]* # trailing spaces/tabs
+ (?=\n+|\Z) # followed by a newline or end of document
+
+ | # Special version for tags of group a.
+
+ [ ]{0,'.$less_than_tab.'}
+ <('.$block_tags_a_re.')# start tag = $3
+ '.$attr.'>[ ]*\n # attributes followed by >
+ '.$content2.' # content, support nesting
+ </\3> # the matching end tag
+ [ ]* # trailing spaces/tabs
+ (?=\n+|\Z) # followed by a newline or end of document
+
+ | # Special case just for <hr />. It was easier to make a special
+ # case than to make the other regex more complicated.
+
+ [ ]{0,'.$less_than_tab.'}
+ <(hr) # start tag = $2
+ '.$attr.' # attributes
+ /?> # the matching end tag
+ [ ]*
+ (?=\n{2,}|\Z) # followed by a blank line or end of document
+
+ | # Special case for standalone HTML comments:
+
+ [ ]{0,'.$less_than_tab.'}
+ (?s:
+ <!-- .*? -->
+ )
+ [ ]*
+ (?=\n{2,}|\Z) # followed by a blank line or end of document
+
+ | # PHP and ASP-style processor instructions (<? and <%)
+
+ [ ]{0,'.$less_than_tab.'}
+ (?s:
+ <([?%]) # $2
+ .*?
+ \2>
+ )
+ [ ]*
+ (?=\n{2,}|\Z) # followed by a blank line or end of document
+
+ )
+ )}Sxmi',
+ array($this, '_hashHTMLBlocks_callback'),
+ $text);
+
+ return $text;
+ }
+ protected function _hashHTMLBlocks_callback($matches) {
+ $text = $matches[1];
+ $key = $this->hashBlock($text);
+ return "\n\n$key\n\n";
+ }
+
+
+ protected function hashPart($text, $boundary = 'X') {
+ #
+ # Called whenever a tag must be hashed when a function insert an atomic
+ # element in the text stream. Passing $text to through this function gives
+ # a unique text-token which will be reverted back when calling unhash.
+ #
+ # The $boundary argument specify what character should be used to surround
+ # the token. By convension, "B" is used for block elements that needs not
+ # to be wrapped into paragraph tags at the end, ":" is used for elements
+ # that are word separators and "X" is used in the general case.
+ #
+ # Swap back any tag hash found in $text so we do not have to `unhash`
+ # multiple times at the end.
+ $text = $this->unhash($text);
+
+ # Then hash the block.
+ static $i = 0;
+ $key = "$boundary\x1A" . ++$i . $boundary;
+ $this->html_hashes[$key] = $text;
+ return $key; # String that will replace the tag.
+ }
+
+
+ protected function hashBlock($text) {
+ #
+ # Shortcut function for hashPart with block-level boundaries.
+ #
+ return $this->hashPart($text, 'B');
+ }
+
+
+ protected $block_gamut = array(
+ #
+ # These are all the transformations that form block-level
+ # tags like paragraphs, headers, and list items.
+ #
+ "doHeaders" => 10,
+ "doHorizontalRules" => 20,
+
+ "doLists" => 40,
+ "doCodeBlocks" => 50,
+ "doBlockQuotes" => 60,
+ );
+
+ protected function runBlockGamut($text) {
+ #
+ # Run block gamut tranformations.
+ #
+ # We need to escape raw HTML in Markdown source before doing anything
+ # else. This need to be done for each block, and not only at the
+ # begining in the Markdown function since hashed blocks can be part of
+ # list items and could have been indented. Indented blocks would have
+ # been seen as a code block in a previous pass of hashHTMLBlocks.
+ $text = $this->hashHTMLBlocks($text);
+
+ return $this->runBasicBlockGamut($text);
+ }
+
+ protected function runBasicBlockGamut($text) {
+ #
+ # Run block gamut tranformations, without hashing HTML blocks. This is
+ # useful when HTML blocks are known to be already hashed, like in the first
+ # whole-document pass.
+ #
+ foreach ($this->block_gamut as $method => $priority) {
+ $text = $this->$method($text);
+ }
+
+ # Finally form paragraph and restore hashed blocks.
+ $text = $this->formParagraphs($text);
+
+ return $text;
+ }
+
+
+ protected function doHorizontalRules($text) {
+ # Do Horizontal Rules:
+ return preg_replace(
+ '{
+ ^[ ]{0,3} # Leading space
+ ([-*_]) # $1: First marker
+ (?> # Repeated marker group
+ [ ]{0,2} # Zero, one, or two spaces.
+ \1 # Marker character
+ ){2,} # Group repeated at least twice
+ [ ]* # Tailing spaces
+ $ # End of line.
+ }mx',
+ "\n".$this->hashBlock("<hr$this->empty_element_suffix")."\n",
+ $text);
+ }
+
+
+ protected $span_gamut = array(
+ #
+ # These are all the transformations that occur *within* block-level
+ # tags like paragraphs, headers, and list items.
+ #
+ # Process character escapes, code spans, and inline HTML
+ # in one shot.
+ "parseSpan" => -30,
+
+ # Process anchor and image tags. Images must come first,
+ # because ![foo][f] looks like an anchor.
+ "doImages" => 10,
+ "doAnchors" => 20,
+
+ # Make links out of things like `<http://example.com/>`
+ # Must come after doAnchors, because you can use < and >
+ # delimiters in inline links like [this](<url>).
+ "doAutoLinks" => 30,
+ "encodeAmpsAndAngles" => 40,
+
+ "doItalicsAndBold" => 50,
+ "doHardBreaks" => 60,
+ );
+
+ protected function runSpanGamut($text) {
+ #
+ # Run span gamut tranformations.
+ #
+ foreach ($this->span_gamut as $method => $priority) {
+ $text = $this->$method($text);
+ }
+
+ return $text;
+ }
+
+
+ protected function doHardBreaks($text) {
+ # Do hard breaks:
+ return preg_replace_callback('/ {2,}\n/',
+ array($this, '_doHardBreaks_callback'), $text);
+ }
+ protected function _doHardBreaks_callback($matches) {
+ return $this->hashPart("<br$this->empty_element_suffix\n");
+ }
+
+
+ protected function doAnchors($text) {
+ #
+ # Turn Markdown link shortcuts into XHTML <a> tags.
+ #
+ if ($this->in_anchor) return $text;
+ $this->in_anchor = true;
+
+ #
+ # First, handle reference-style links: [link text] [id]
+ #
+ $text = preg_replace_callback('{
+ ( # wrap whole match in $1
+ \[
+ ('.$this->nested_brackets_re.') # link text = $2
+ \]
+
+ [ ]? # one optional space
+ (?:\n[ ]*)? # one optional newline followed by spaces
+
+ \[
+ (.*?) # id = $3
+ \]
+ )
+ }xs',
+ array($this, '_doAnchors_reference_callback'), $text);
+
+ #
+ # Next, inline-style links: [link text](url "optional title")
+ #
+ $text = preg_replace_callback('{
+ ( # wrap whole match in $1
+ \[
+ ('.$this->nested_brackets_re.') # link text = $2
+ \]
+ \( # literal paren
+ [ \n]*
+ (?:
+ <(.+?)> # href = $3
+ |
+ ('.$this->nested_url_parenthesis_re.') # href = $4
+ )
+ [ \n]*
+ ( # $5
+ ([\'"]) # quote char = $6
+ (.*?) # Title = $7
+ \6 # matching quote
+ [ \n]* # ignore any spaces/tabs between closing quote and )
+ )? # title is optional
+ \)
+ )
+ }xs',
+ array($this, '_doAnchors_inline_callback'), $text);
+
+ #
+ # Last, handle reference-style shortcuts: [link text]
+ # These must come last in case you've also got [link text][1]
+ # or [link text](/foo)
+ #
+ $text = preg_replace_callback('{
+ ( # wrap whole match in $1
+ \[
+ ([^\[\]]+) # link text = $2; can\'t contain [ or ]
+ \]
+ )
+ }xs',
+ array($this, '_doAnchors_reference_callback'), $text);
+
+ $this->in_anchor = false;
+ return $text;
+ }
+ protected function _doAnchors_reference_callback($matches) {
+ $whole_match = $matches[1];
+ $link_text = $matches[2];
+ $link_id =& $matches[3];
+
+ if ($link_id == "") {
+ # for shortcut links like [this][] or [this].
+ $link_id = $link_text;
+ }
+
+ # lower-case and turn embedded newlines into spaces
+ $link_id = strtolower($link_id);
+ $link_id = preg_replace('{[ ]?\n}', ' ', $link_id);
+
+ if (isset($this->urls[$link_id])) {
+ $url = $this->urls[$link_id];
+ $url = $this->encodeURLAttribute($url);
+
+ $result = "<a href=\"$url\"";
+ if ( isset( $this->titles[$link_id] ) ) {
+ $title = $this->titles[$link_id];
+ $title = $this->encodeAttribute($title);
+ $result .= " title=\"$title\"";
+ }
+
+ $link_text = $this->runSpanGamut($link_text);
+ $result .= ">$link_text</a>";
+ $result = $this->hashPart($result);
+ }
+ else {
+ $result = $whole_match;
+ }
+ return $result;
+ }
+ protected function _doAnchors_inline_callback($matches) {
+ $whole_match = $matches[1];
+ $link_text = $this->runSpanGamut($matches[2]);
+ $url = $matches[3] == '' ? $matches[4] : $matches[3];
+ $title =& $matches[7];
+
+ // if the URL was of the form <s p a c e s> it got caught by the HTML
+ // tag parser and hashed. Need to reverse the process before using the URL.
+ $unhashed = $this->unhash($url);
+ if ($unhashed != $url)
+ $url = preg_replace('/^<(.*)>$/', '\1', $unhashed);
+
+ $url = $this->encodeURLAttribute($url);
+
+ $result = "<a href=\"$url\"";
+ if (isset($title)) {
+ $title = $this->encodeAttribute($title);
+ $result .= " title=\"$title\"";
+ }
+
+ $link_text = $this->runSpanGamut($link_text);
+ $result .= ">$link_text</a>";
+
+ return $this->hashPart($result);
+ }
+
+
+ protected function doImages($text) {
+ #
+ # Turn Markdown image shortcuts into <img> tags.
+ #
+ #
+ # First, handle reference-style labeled images: ![alt text][id]
+ #
+ $text = preg_replace_callback('{
+ ( # wrap whole match in $1
+ !\[
+ ('.$this->nested_brackets_re.') # alt text = $2
+ \]
+
+ [ ]? # one optional space
+ (?:\n[ ]*)? # one optional newline followed by spaces
+
+ \[
+ (.*?) # id = $3
+ \]
+
+ )
+ }xs',
+ array($this, '_doImages_reference_callback'), $text);
+
+ #
+ # Next, handle inline images: 
+ # Don't forget: encode * and _
+ #
+ $text = preg_replace_callback('{
+ ( # wrap whole match in $1
+ !\[
+ ('.$this->nested_brackets_re.') # alt text = $2
+ \]
+ \s? # One optional whitespace character
+ \( # literal paren
+ [ \n]*
+ (?:
+ <(\S*)> # src url = $3
+ |
+ ('.$this->nested_url_parenthesis_re.') # src url = $4
+ )
+ [ \n]*
+ ( # $5
+ ([\'"]) # quote char = $6
+ (.*?) # title = $7
+ \6 # matching quote
+ [ \n]*
+ )? # title is optional
+ \)
+ )
+ }xs',
+ array($this, '_doImages_inline_callback'), $text);
+
+ return $text;
+ }
+ protected function _doImages_reference_callback($matches) {
+ $whole_match = $matches[1];
+ $alt_text = $matches[2];
+ $link_id = strtolower($matches[3]);
+
+ if ($link_id == "") {
+ $link_id = strtolower($alt_text); # for shortcut links like ![this][].
+ }
+
+ $alt_text = $this->encodeAttribute($alt_text);
+ if (isset($this->urls[$link_id])) {
+ $url = $this->encodeURLAttribute($this->urls[$link_id]);
+ $result = "<img src=\"$url\" alt=\"$alt_text\"";
+ if (isset($this->titles[$link_id])) {
+ $title = $this->titles[$link_id];
+ $title = $this->encodeAttribute($title);
+ $result .= " title=\"$title\"";
+ }
+ $result .= $this->empty_element_suffix;
+ $result = $this->hashPart($result);
+ }
+ else {
+ # If there's no such link ID, leave intact:
+ $result = $whole_match;
+ }
+
+ return $result;
+ }
+ protected function _doImages_inline_callback($matches) {
+ $whole_match = $matches[1];
+ $alt_text = $matches[2];
+ $url = $matches[3] == '' ? $matches[4] : $matches[3];
+ $title =& $matches[7];
+
+ $alt_text = $this->encodeAttribute($alt_text);
+ $url = $this->encodeURLAttribute($url);
+ $result = "<img src=\"$url\" alt=\"$alt_text\"";
+ if (isset($title)) {
+ $title = $this->encodeAttribute($title);
+ $result .= " title=\"$title\""; # $title already quoted
+ }
+ $result .= $this->empty_element_suffix;
+
+ return $this->hashPart($result);
+ }
+
+
+ protected function doHeaders($text) {
+ # Setext-style headers:
+ # Header 1
+ # ========
+ #
+ # Header 2
+ # --------
+ #
+ $text = preg_replace_callback('{ ^(.+?)[ ]*\n(=+|-+)[ ]*\n+ }mx',
+ array($this, '_doHeaders_callback_setext'), $text);
+
+ # atx-style headers:
+ # # Header 1
+ # ## Header 2
+ # ## Header 2 with closing hashes ##
+ # ...
+ # ###### Header 6
+ #
+ $text = preg_replace_callback('{
+ ^(\#{1,6}) # $1 = string of #\'s
+ [ ]*
+ (.+?) # $2 = Header text
+ [ ]*
+ \#* # optional closing #\'s (not counted)
+ \n+
+ }xm',
+ array($this, '_doHeaders_callback_atx'), $text);
+
+ return $text;
+ }
+ protected function _doHeaders_callback_setext($matches) {
+ # Terrible hack to check we haven't found an empty list item.
+ if ($matches[2] == '-' && preg_match('{^-(?: |$)}', $matches[1]))
+ return $matches[0];
+
+ $level = $matches[2]{0} == '=' ? 1 : 2;
+ $block = "<h$level>".$this->runSpanGamut($matches[1])."</h$level>";
+ return "\n" . $this->hashBlock($block) . "\n\n";
+ }
+ protected function _doHeaders_callback_atx($matches) {
+ $level = strlen($matches[1]);
+ $block = "<h$level>".$this->runSpanGamut($matches[2])."</h$level>";
+ return "\n" . $this->hashBlock($block) . "\n\n";
+ }
+
+
+ protected function doLists($text) {
+ #
+ # Form HTML ordered (numbered) and unordered (bulleted) lists.
+ #
+ $less_than_tab = $this->tab_width - 1;
+
+ # Re-usable patterns to match list item bullets and number markers:
+ $marker_ul_re = '[*+-]';
+ $marker_ol_re = '\d+[\.]';
+
+ $markers_relist = array(
+ $marker_ul_re => $marker_ol_re,
+ $marker_ol_re => $marker_ul_re,
+ );
+
+ foreach ($markers_relist as $marker_re => $other_marker_re) {
+ # Re-usable pattern to match any entirel ul or ol list:
+ $whole_list_re = '
+ ( # $1 = whole list
+ ( # $2
+ ([ ]{0,'.$less_than_tab.'}) # $3 = number of spaces
+ ('.$marker_re.') # $4 = first list item marker
+ [ ]+
+ )
+ (?s:.+?)
+ ( # $5
+ \z
+ |
+ \n{2,}
+ (?=\S)
+ (?! # Negative lookahead for another list item marker
+ [ ]*
+ '.$marker_re.'[ ]+
+ )
+ |
+ (?= # Lookahead for another kind of list
+ \n
+ \3 # Must have the same indentation
+ '.$other_marker_re.'[ ]+
+ )
+ )
+ )
+ '; // mx
+
+ # We use a different prefix before nested lists than top-level lists.
+ # See extended comment in _ProcessListItems().
+
+ if ($this->list_level) {
+ $text = preg_replace_callback('{
+ ^
+ '.$whole_list_re.'
+ }mx',
+ array($this, '_doLists_callback'), $text);
+ }
+ else {
+ $text = preg_replace_callback('{
+ (?:(?<=\n)\n|\A\n?) # Must eat the newline
+ '.$whole_list_re.'
+ }mx',
+ array($this, '_doLists_callback'), $text);
+ }
+ }
+
+ return $text;
+ }
+ protected function _doLists_callback($matches) {
+ # Re-usable patterns to match list item bullets and number markers:
+ $marker_ul_re = '[*+-]';
+ $marker_ol_re = '\d+[\.]';
+ $marker_any_re = "(?:$marker_ul_re|$marker_ol_re)";
+
+ $list = $matches[1];
+ $list_type = preg_match("/$marker_ul_re/", $matches[4]) ? "ul" : "ol";
+
+ $marker_any_re = ( $list_type == "ul" ? $marker_ul_re : $marker_ol_re );
+
+ $list .= "\n";
+ $result = $this->processListItems($list, $marker_any_re);
+
+ $result = $this->hashBlock("<$list_type>\n" . $result . "</$list_type>");
+ return "\n". $result ."\n\n";
+ }
+
+ protected $list_level = 0;
+
+ protected function processListItems($list_str, $marker_any_re) {
+ #
+ # Process the contents of a single ordered or unordered list, splitting it
+ # into individual list items.
+ #
+ # The $this->list_level global keeps track of when we're inside a list.
+ # Each time we enter a list, we increment it; when we leave a list,
+ # we decrement. If it's zero, we're not in a list anymore.
+ #
+ # We do this because when we're not inside a list, we want to treat
+ # something like this:
+ #
+ # I recommend upgrading to version
+ # 8. Oops, now this line is treated
+ # as a sub-list.
+ #
+ # As a single paragraph, despite the fact that the second line starts
+ # with a digit-period-space sequence.
+ #
+ # Whereas when we're inside a list (or sub-list), that line will be
+ # treated as the start of a sub-list. What a kludge, huh? This is
+ # an aspect of Markdown's syntax that's hard to parse perfectly
+ # without resorting to mind-reading. Perhaps the solution is to
+ # change the syntax rules such that sub-lists must start with a
+ # starting cardinal number; e.g. "1." or "a.".
+
+ $this->list_level++;
+
+ # trim trailing blank lines:
+ $list_str = preg_replace("/\n{2,}\\z/", "\n", $list_str);
+
+ $list_str = preg_replace_callback('{
+ (\n)? # leading line = $1
+ (^[ ]*) # leading whitespace = $2
+ ('.$marker_any_re.' # list marker and space = $3
+ (?:[ ]+|(?=\n)) # space only required if item is not empty
+ )
+ ((?s:.*?)) # list item text = $4
+ (?:(\n+(?=\n))|\n) # tailing blank line = $5
+ (?= \n* (\z | \2 ('.$marker_any_re.') (?:[ ]+|(?=\n))))
+ }xm',
+ array($this, '_processListItems_callback'), $list_str);
+
+ $this->list_level--;
+ return $list_str;
+ }
+ protected function _processListItems_callback($matches) {
+ $item = $matches[4];
+ $leading_line =& $matches[1];
+ $leading_space =& $matches[2];
+ $marker_space = $matches[3];
+ $tailing_blank_line =& $matches[5];
+
+ if ($leading_line || $tailing_blank_line ||
+ preg_match('/\n{2,}/', $item))
+ {
+ # Replace marker with the appropriate whitespace indentation
+ $item = $leading_space . str_repeat(' ', strlen($marker_space)) . $item;
+ $item = $this->runBlockGamut($this->outdent($item)."\n");
+ }
+ else {
+ # Recursion for sub-lists:
+ $item = $this->doLists($this->outdent($item));
+ $item = preg_replace('/\n+$/', '', $item);
+ $item = $this->runSpanGamut($item);
+ }
+
+ return "<li>" . $item . "</li>\n";
+ }
+
+
+ protected function doCodeBlocks($text) {
+ #
+ # Process Markdown `<pre><code>` blocks.
+ #
+ $text = preg_replace_callback('{
+ (?:\n\n|\A\n?)
+ ( # $1 = the code block -- one or more lines, starting with a space/tab
+ (?>
+ [ ]{'.$this->tab_width.'} # Lines must start with a tab or a tab-width of spaces
+ .*\n+
+ )+
+ )
+ ((?=^[ ]{0,'.$this->tab_width.'}\S)|\Z) # Lookahead for non-space at line-start, or end of doc
+ }xm',
+ array($this, '_doCodeBlocks_callback'), $text);
+
+ return $text;
+ }
+ protected function _doCodeBlocks_callback($matches) {
+ $codeblock = $matches[1];
+
+ $codeblock = $this->outdent($codeblock);
+ $codeblock = htmlspecialchars($codeblock, ENT_NOQUOTES);
+
+ # trim leading newlines and trailing newlines
+ $codeblock = preg_replace('/\A\n+|\n+\z/', '', $codeblock);
+
+ $codeblock = "<pre><code>$codeblock\n</code></pre>";
+ return "\n\n".$this->hashBlock($codeblock)."\n\n";
+ }
+
+
+ protected function makeCodeSpan($code) {
+ #
+ # Create a code span markup for $code. Called from handleSpanToken.
+ #
+ $code = htmlspecialchars(trim($code), ENT_NOQUOTES);
+ return $this->hashPart("<code>$code</code>");
+ }
+
+
+ protected $em_relist = array(
+ '' => '(?:(?<!\*)\*(?!\*)|(?<!_)_(?!_))(?![\.,:;]?\s)',
+ '*' => '(?<![\s*])\*(?!\*)',
+ '_' => '(?<![\s_])_(?!_)',
+ );
+ protected $strong_relist = array(
+ '' => '(?:(?<!\*)\*\*(?!\*)|(?<!_)__(?!_))(?![\.,:;]?\s)',
+ '**' => '(?<![\s*])\*\*(?!\*)',
+ '__' => '(?<![\s_])__(?!_)',
+ );
+ protected $em_strong_relist = array(
+ '' => '(?:(?<!\*)\*\*\*(?!\*)|(?<!_)___(?!_))(?![\.,:;]?\s)',
+ '***' => '(?<![\s*])\*\*\*(?!\*)',
+ '___' => '(?<![\s_])___(?!_)',
+ );
+ protected $em_strong_prepared_relist;
+
+ protected function prepareItalicsAndBold() {
+ #
+ # Prepare regular expressions for searching emphasis tokens in any
+ # context.
+ #
+ foreach ($this->em_relist as $em => $em_re) {
+ foreach ($this->strong_relist as $strong => $strong_re) {
+ # Construct list of allowed token expressions.
+ $token_relist = array();
+ if (isset($this->em_strong_relist["$em$strong"])) {
+ $token_relist[] = $this->em_strong_relist["$em$strong"];
+ }
+ $token_relist[] = $em_re;
+ $token_relist[] = $strong_re;
+
+ # Construct master expression from list.
+ $token_re = '{('. implode('|', $token_relist) .')}';
+ $this->em_strong_prepared_relist["$em$strong"] = $token_re;
+ }
+ }
+ }
+
+ protected function doItalicsAndBold($text) {
+ $token_stack = array('');
+ $text_stack = array('');
+ $em = '';
+ $strong = '';
+ $tree_char_em = false;
+
+ while (1) {
+ #
+ # Get prepared regular expression for seraching emphasis tokens
+ # in current context.
+ #
+ $token_re = $this->em_strong_prepared_relist["$em$strong"];
+
+ #
+ # Each loop iteration search for the next emphasis token.
+ # Each token is then passed to handleSpanToken.
+ #
+ $parts = preg_split($token_re, $text, 2, PREG_SPLIT_DELIM_CAPTURE);
+ $text_stack[0] .= $parts[0];
+ $token =& $parts[1];
+ $text =& $parts[2];
+
+ if (empty($token)) {
+ # Reached end of text span: empty stack without emitting.
+ # any more emphasis.
+ while ($token_stack[0]) {
+ $text_stack[1] .= array_shift($token_stack);
+ $text_stack[0] .= array_shift($text_stack);
+ }
+ break;
+ }
+
+ $token_len = strlen($token);
+ if ($tree_char_em) {
+ # Reached closing marker while inside a three-char emphasis.
+ if ($token_len == 3) {
+ # Three-char closing marker, close em and strong.
+ array_shift($token_stack);
+ $span = array_shift($text_stack);
+ $span = $this->runSpanGamut($span);
+ $span = "<strong><em>$span</em></strong>";
+ $text_stack[0] .= $this->hashPart($span);
+ $em = '';
+ $strong = '';
+ } else {
+ # Other closing marker: close one em or strong and
+ # change current token state to match the other
+ $token_stack[0] = str_repeat($token{0}, 3-$token_len);
+ $tag = $token_len == 2 ? "strong" : "em";
+ $span = $text_stack[0];
+ $span = $this->runSpanGamut($span);
+ $span = "<$tag>$span</$tag>";
+ $text_stack[0] = $this->hashPart($span);
+ $$tag = ''; # $$tag stands for $em or $strong
+ }
+ $tree_char_em = false;
+ } else if ($token_len == 3) {
+ if ($em) {
+ # Reached closing marker for both em and strong.
+ # Closing strong marker:
+ for ($i = 0; $i < 2; ++$i) {
+ $shifted_token = array_shift($token_stack);
+ $tag = strlen($shifted_token) == 2 ? "strong" : "em";
+ $span = array_shift($text_stack);
+ $span = $this->runSpanGamut($span);
+ $span = "<$tag>$span</$tag>";
+ $text_stack[0] .= $this->hashPart($span);
+ $$tag = ''; # $$tag stands for $em or $strong
+ }
+ } else {
+ # Reached opening three-char emphasis marker. Push on token
+ # stack; will be handled by the special condition above.
+ $em = $token{0};
+ $strong = "$em$em";
+ array_unshift($token_stack, $token);
+ array_unshift($text_stack, '');
+ $tree_char_em = true;
+ }
+ } else if ($token_len == 2) {
+ if ($strong) {
+ # Unwind any dangling emphasis marker:
+ if (strlen($token_stack[0]) == 1) {
+ $text_stack[1] .= array_shift($token_stack);
+ $text_stack[0] .= array_shift($text_stack);
+ }
+ # Closing strong marker:
+ array_shift($token_stack);
+ $span = array_shift($text_stack);
+ $span = $this->runSpanGamut($span);
+ $span = "<strong>$span</strong>";
+ $text_stack[0] .= $this->hashPart($span);
+ $strong = '';
+ } else {
+ array_unshift($token_stack, $token);
+ array_unshift($text_stack, '');
+ $strong = $token;
+ }
+ } else {
+ # Here $token_len == 1
+ if ($em) {
+ if (strlen($token_stack[0]) == 1) {
+ # Closing emphasis marker:
+ array_shift($token_stack);
+ $span = array_shift($text_stack);
+ $span = $this->runSpanGamut($span);
+ $span = "<em>$span</em>";
+ $text_stack[0] .= $this->hashPart($span);
+ $em = '';
+ } else {
+ $text_stack[0] .= $token;
+ }
+ } else {
+ array_unshift($token_stack, $token);
+ array_unshift($text_stack, '');
+ $em = $token;
+ }
+ }
+ }
+ return $text_stack[0];
+ }
+
+
+ protected function doBlockQuotes($text) {
+ $text = preg_replace_callback('/
+ ( # Wrap whole match in $1
+ (?>
+ ^[ ]*>[ ]? # ">" at the start of a line
+ .+\n # rest of the first line
+ (.+\n)* # subsequent consecutive lines
+ \n* # blanks
+ )+
+ )
+ /xm',
+ array($this, '_doBlockQuotes_callback'), $text);
+
+ return $text;
+ }
+ protected function _doBlockQuotes_callback($matches) {
+ $bq = $matches[1];
+ # trim one level of quoting - trim whitespace-only lines
+ $bq = preg_replace('/^[ ]*>[ ]?|^[ ]+$/m', '', $bq);
+ $bq = $this->runBlockGamut($bq); # recurse
+
+ $bq = preg_replace('/^/m', " ", $bq);
+ # These leading spaces cause problem with <pre> content,
+ # so we need to fix that:
+ $bq = preg_replace_callback('{(\s*<pre>.+?</pre>)}sx',
+ array($this, '_doBlockQuotes_callback2'), $bq);
+
+ return "\n". $this->hashBlock("<blockquote>\n$bq\n</blockquote>")."\n\n";
+ }
+ protected function _doBlockQuotes_callback2($matches) {
+ $pre = $matches[1];
+ $pre = preg_replace('/^ /m', '', $pre);
+ return $pre;
+ }
+
+
+ protected function formParagraphs($text) {
+ #
+ # Params:
+ # $text - string to process with html <p> tags
+ #
+ # Strip leading and trailing lines:
+ $text = preg_replace('/\A\n+|\n+\z/', '', $text);
+
+ $grafs = preg_split('/\n{2,}/', $text, -1, PREG_SPLIT_NO_EMPTY);
+
+ #
+ # Wrap <p> tags and unhashify HTML blocks
+ #
+ foreach ($grafs as $key => $value) {
+ if (!preg_match('/^B\x1A[0-9]+B$/', $value)) {
+ # Is a paragraph.
+ $value = $this->runSpanGamut($value);
+ $value = preg_replace('/^([ ]*)/', "<p>", $value);
+ $value .= "</p>";
+ $grafs[$key] = $this->unhash($value);
+ }
+ else {
+ # Is a block.
+ # Modify elements of @grafs in-place...
+ $graf = $value;
+ $block = $this->html_hashes[$graf];
+ $graf = $block;
+// if (preg_match('{
+// \A
+// ( # $1 = <div> tag
+// <div \s+
+// [^>]*
+// \b
+// markdown\s*=\s* ([\'"]) # $2 = attr quote char
+// 1
+// \2
+// [^>]*
+// >
+// )
+// ( # $3 = contents
+// .*
+// )
+// (</div>) # $4 = closing tag
+// \z
+// }xs', $block, $matches))
+// {
+// list(, $div_open, , $div_content, $div_close) = $matches;
+//
+// # We can't call Markdown(), because that resets the hash;
+// # that initialization code should be pulled into its own sub, though.
+// $div_content = $this->hashHTMLBlocks($div_content);
+//
+// # Run document gamut methods on the content.
+// foreach ($this->document_gamut as $method => $priority) {
+// $div_content = $this->$method($div_content);
+// }
+//
+// $div_open = preg_replace(
+// '{\smarkdown\s*=\s*([\'"]).+?\1}', '', $div_open);
+//
+// $graf = $div_open . "\n" . $div_content . "\n" . $div_close;
+// }
+ $grafs[$key] = $graf;
+ }
+ }
+
+ return implode("\n\n", $grafs);
+ }
+
+
+ protected function encodeAttribute($text) {
+ #
+ # Encode text for a double-quoted HTML attribute. This function
+ # is *not* suitable for attributes enclosed in single quotes.
+ #
+ $text = $this->encodeAmpsAndAngles($text);
+ $text = str_replace('"', '"', $text);
+ return $text;
+ }
+
+
+ protected function encodeURLAttribute($url, &$text = null) {
+ #
+ # Encode text for a double-quoted HTML attribute containing a URL,
+ # applying the URL filter if set. Also generates the textual
+ # representation for the URL (removing mailto: or tel:) storing it in $text.
+ # This function is *not* suitable for attributes enclosed in single quotes.
+ #
+ if ($this->url_filter_func)
+ $url = call_user_func($this->url_filter_func, $url);
+
+ if (preg_match('{^mailto:}i', $url))
+ $url = $this->encodeEntityObfuscatedAttribute($url, $text, 7);
+ else if (preg_match('{^tel:}i', $url))
+ {
+ $url = $this->encodeAttribute($url);
+ $text = substr($url, 4);
+ }
+ else
+ {
+ $url = $this->encodeAttribute($url);
+ $text = $url;
+ }
+
+ return $url;
+ }
+
+
+ protected function encodeAmpsAndAngles($text) {
+ #
+ # Smart processing for ampersands and angle brackets that need to
+ # be encoded. Valid character entities are left alone unless the
+ # no-entities mode is set.
+ #
+ if ($this->no_entities) {
+ $text = str_replace('&', '&', $text);
+ } else {
+ # Ampersand-encoding based entirely on Nat Irons's Amputator
+ # MT plugin: <http://bumppo.net/projects/amputator/>
+ $text = preg_replace('/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/',
+ '&', $text);
+ }
+ # Encode remaining <'s
+ $text = str_replace('<', '<', $text);
+
+ return $text;
+ }
+
+
+ protected function doAutoLinks($text) {
+ $text = preg_replace_callback('{<((https?|ftp|dict|tel):[^\'">\s]+)>}i',
+ array($this, '_doAutoLinks_url_callback'), $text);
+
+ # Email addresses: <address@domain.foo>
+ $text = preg_replace_callback('{
+ <
+ (?:mailto:)?
+ (
+ (?:
+ [-!#$%&\'*+/=?^_`.{|}~\w\x80-\xFF]+
+ |
+ ".*?"
+ )
+ \@
+ (?:
+ [-a-z0-9\x80-\xFF]+(\.[-a-z0-9\x80-\xFF]+)*\.[a-z]+
+ |
+ \[[\d.a-fA-F:]+\] # IPv4 & IPv6
+ )
+ )
+ >
+ }xi',
+ array($this, '_doAutoLinks_email_callback'), $text);
+
+ return $text;
+ }
+ protected function _doAutoLinks_url_callback($matches) {
+ $url = $this->encodeURLAttribute($matches[1], $text);
+ $link = "<a href=\"$url\">$text</a>";
+ return $this->hashPart($link);
+ }
+ protected function _doAutoLinks_email_callback($matches) {
+ $addr = $matches[1];
+ $url = $this->encodeURLAttribute("mailto:$addr", $text);
+ $link = "<a href=\"$url\">$text</a>";
+ return $this->hashPart($link);
+ }
+
+
+ protected function encodeEntityObfuscatedAttribute($text, &$tail = null, $head_length = 0) {
+ #
+ # Input: some text to obfuscate, e.g. "mailto:foo@example.com"
+ #
+ # Output: the same text but with most characters encoded as either a
+ # decimal or hex entity, in the hopes of foiling most address
+ # harvesting spam bots. E.g.:
+ #
+ # mailto:foo
+ # @example.co
+ # m
+ #
+ # Note: the additional output $tail is assigned the same value as the
+ # ouput, minus the number of characters specified by $head_length.
+ #
+ # Based by a filter by Matthew Wickline, posted to BBEdit-Talk.
+ # With some optimizations by Milian Wolff. Forced encoding of HTML
+ # attribute special characters by Allan Odgaard.
+ #
+ if ($text == "") return $tail = "";
+
+ $chars = preg_split('/(?<!^)(?!$)/', $text);
+ $seed = (int)abs(crc32($text) / strlen($text)); # Deterministic seed.
+
+ foreach ($chars as $key => $char) {
+ $ord = ord($char);
+ # Ignore non-ascii chars.
+ if ($ord < 128) {
+ $r = ($seed * (1 + $key)) % 100; # Pseudo-random function.
+ # roughly 10% raw, 45% hex, 45% dec
+ # '@' *must* be encoded. I insist.
+ # '"' and '>' have to be encoded inside the attribute
+ if ($r > 90 && strpos('@"&>', $char) === false) /* do nothing */;
+ else if ($r < 45) $chars[$key] = '&#x'.dechex($ord).';';
+ else $chars[$key] = '&#'.$ord.';';
+ }
+ }
+
+ $text = implode('', $chars);
+ $tail = $head_length ? implode('', array_slice($chars, $head_length)) : $text;
+
+ return $text;
+ }
+
+
+ protected function parseSpan($str) {
+ #
+ # Take the string $str and parse it into tokens, hashing embeded HTML,
+ # escaped characters and handling code spans.
+ #
+ $output = '';
+
+ $span_re = '{
+ (
+ \\\\'.$this->escape_chars_re.'
+ |
+ (?<![`\\\\])
+ `+ # code span marker
+ '.( $this->no_markup ? '' : '
+ |
+ <!-- .*? --> # comment
+ |
+ <\?.*?\?> | <%.*?%> # processing instruction
+ |
+ <[!$]?[-a-zA-Z0-9:_]+ # regular tags
+ (?>
+ \s
+ (?>[^"\'>]+|"[^"]*"|\'[^\']*\')*
+ )?
+ >
+ |
+ <[-a-zA-Z0-9:_]+\s*/> # xml-style empty tag
+ |
+ </[-a-zA-Z0-9:_]+\s*> # closing tag
+ ').'
+ )
+ }xs';
+
+ while (1) {
+ #
+ # Each loop iteration seach for either the next tag, the next
+ # openning code span marker, or the next escaped character.
+ # Each token is then passed to handleSpanToken.
+ #
+ $parts = preg_split($span_re, $str, 2, PREG_SPLIT_DELIM_CAPTURE);
+
+ # Create token from text preceding tag.
+ if ($parts[0] != "") {
+ $output .= $parts[0];
+ }
+
+ # Check if we reach the end.
+ if (isset($parts[1])) {
+ $output .= $this->handleSpanToken($parts[1], $parts[2]);
+ $str = $parts[2];
+ }
+ else {
+ break;
+ }
+ }
+
+ return $output;
+ }
+
+
+ protected function handleSpanToken($token, &$str) {
+ #
+ # Handle $token provided by parseSpan by determining its nature and
+ # returning the corresponding value that should replace it.
+ #
+ switch ($token{0}) {
+ case "\\":
+ return $this->hashPart("&#". ord($token{1}). ";");
+ case "`":
+ # Search for end marker in remaining text.
+ if (preg_match('/^(.*?[^`])'.preg_quote($token).'(?!`)(.*)$/sm',
+ $str, $matches))
+ {
+ $str = $matches[2];
+ $codespan = $this->makeCodeSpan($matches[1]);
+ return $this->hashPart($codespan);
+ }
+ return $token; // return as text since no ending marker found.
+ default:
+ return $this->hashPart($token);
+ }
+ }
+
+
+ protected function outdent($text) {
+ #
+ # Remove one level of line-leading tabs or spaces
+ #
+ return preg_replace('/^(\t|[ ]{1,'.$this->tab_width.'})/m', '', $text);
+ }
+
+
+ # String length function for detab. `_initDetab` will create a function to
+ # hanlde UTF-8 if the default function does not exist.
+ protected $utf8_strlen = 'mb_strlen';
+
+ protected function detab($text) {
+ #
+ # Replace tabs with the appropriate amount of space.
+ #
+ # For each line we separate the line in blocks delemited by
+ # tab characters. Then we reconstruct every line by adding the
+ # appropriate number of space between each blocks.
+
+ $text = preg_replace_callback('/^.*\t.*$/m',
+ array($this, '_detab_callback'), $text);
+
+ return $text;
+ }
+ protected function _detab_callback($matches) {
+ $line = $matches[0];
+ $strlen = $this->utf8_strlen; # strlen function for UTF-8.
+
+ # Split in blocks.
+ $blocks = explode("\t", $line);
+ # Add each blocks to the line.
+ $line = $blocks[0];
+ unset($blocks[0]); # Do not add first block twice.
+ foreach ($blocks as $block) {
+ # Calculate amount of space, insert spaces, insert block.
+ $amount = $this->tab_width -
+ $strlen($line, 'UTF-8') % $this->tab_width;
+ $line .= str_repeat(" ", $amount) . $block;
+ }
+ return $line;
+ }
+ protected function _initDetab() {
+ #
+ # Check for the availability of the function in the `utf8_strlen` property
+ # (initially `mb_strlen`). If the function is not available, create a
+ # function that will loosely count the number of UTF-8 characters with a
+ # regular expression.
+ #
+ if (function_exists($this->utf8_strlen)) return;
+ $this->utf8_strlen = create_function('$text', 'return preg_match_all(
+ "/[\\\\x00-\\\\xBF]|[\\\\xC0-\\\\xFF][\\\\x80-\\\\xBF]*/",
+ $text, $m);');
+ }
+
+
+ protected function unhash($text) {
+ #
+ # Swap back in all the tags hashed by _HashHTMLBlocks.
+ #
+ return preg_replace_callback('/(.)\x1A[0-9]+\1/',
+ array($this, '_unhash_callback'), $text);
+ }
+ protected function _unhash_callback($matches) {
+ return $this->html_hashes[$matches[0]];
+ }
+
+}
+
+class MarkdownExtraParser extends MarkdownParser {
+
+ ### Configuration Variables ###
+
+ # Prefix for footnote ids.
+ public $fn_id_prefix = "";
+
+ # Optional title attribute for footnote links and backlinks.
+ public $fn_link_title = "";
+ public $fn_backlink_title = "";
+
+ # Optional class attribute for footnote links and backlinks.
+ public $fn_link_class = "footnote-ref";
+ public $fn_backlink_class = "footnote-backref";
+
+ # Class name for table cell alignment (%% replaced left/center/right)
+ # For instance: 'go-%%' becomes 'go-left' or 'go-right' or 'go-center'
+ # If empty, the align attribute is used instead of a class name.
+ public $table_align_class_tmpl = '';
+
+ # Optional class prefix for fenced code block.
+ public $code_class_prefix = "";
+ # Class attribute for code blocks goes on the `code` tag;
+ # setting this to true will put attributes on the `pre` tag instead.
+ public $code_attr_on_pre = false;
+
+ # Predefined abbreviations.
+ public $predef_abbr = array();
+
+
+ ### Parser Implementation ###
+
+ public function __construct() {
+ #
+ # Constructor function. Initialize the parser object.
+ #
+ # Add extra escapable characters before parent constructor
+ # initialize the table.
+ $this->escape_chars .= ':|';
+
+ # Insert extra document, block, and span transformations.
+ # Parent constructor will do the sorting.
+ $this->document_gamut += array(
+ "doFencedCodeBlocks" => 5,
+ "stripFootnotes" => 15,
+ "stripAbbreviations" => 25,
+ "appendFootnotes" => 50,
+ );
+ $this->block_gamut += array(
+ "doFencedCodeBlocks" => 5,
+ "doTables" => 15,
+ "doDefLists" => 45,
+ );
+ $this->span_gamut += array(
+ "doFootnotes" => 5,
+ "doAbbreviations" => 70,
+ );
+
+ parent::__construct();
+ }
+
+
+ # Extra variables used during extra transformations.
+ protected $footnotes = array();
+ protected $footnotes_ordered = array();
+ protected $footnotes_ref_count = array();
+ protected $footnotes_numbers = array();
+ protected $abbr_desciptions = array();
+ protected $abbr_word_re = '';
+
+ # Give the current footnote number.
+ protected $footnote_counter = 1;
+
+
+ protected function setup() {
+ #
+ # Setting up Extra-specific variables.
+ #
+ parent::setup();
+
+ $this->footnotes = array();
+ $this->footnotes_ordered = array();
+ $this->footnotes_ref_count = array();
+ $this->footnotes_numbers = array();
+ $this->abbr_desciptions = array();
+ $this->abbr_word_re = '';
+ $this->footnote_counter = 1;
+
+ foreach ($this->predef_abbr as $abbr_word => $abbr_desc) {
+ if ($this->abbr_word_re)
+ $this->abbr_word_re .= '|';
+ $this->abbr_word_re .= preg_quote($abbr_word);
+ $this->abbr_desciptions[$abbr_word] = trim($abbr_desc);
+ }
+ }
+
+ protected function teardown() {
+ #
+ # Clearing Extra-specific variables.
+ #
+ $this->footnotes = array();
+ $this->footnotes_ordered = array();
+ $this->footnotes_ref_count = array();
+ $this->footnotes_numbers = array();
+ $this->abbr_desciptions = array();
+ $this->abbr_word_re = '';
+
+ parent::teardown();
+ }
+
+
+ ### Extra Attribute Parser ###
+
+ # Expression to use to catch attributes (includes the braces)
+ protected $id_class_attr_catch_re = '\{((?:[ ]*[#.][-_:a-zA-Z0-9]+){1,})[ ]*\}';
+ # Expression to use when parsing in a context when no capture is desired
+ protected $id_class_attr_nocatch_re = '\{(?:[ ]*[#.][-_:a-zA-Z0-9]+){1,}[ ]*\}';
+
+ protected function doExtraAttributes($tag_name, $attr) {
+ #
+ # Parse attributes caught by the $this->id_class_attr_catch_re expression
+ # and return the HTML-formatted list of attributes.
+ #
+ # Currently supported attributes are .class and #id.
+ #
+ if (empty($attr)) return "";
+
+ # Split on components
+ preg_match_all('/[#.][-_:a-zA-Z0-9]+/', $attr, $matches);
+ $elements = $matches[0];
+
+ # handle classes and ids (only first id taken into account)
+ $classes = array();
+ $id = false;
+ foreach ($elements as $element) {
+ if ($element{0} == '.') {
+ $classes[] = substr($element, 1);
+ } else if ($element{0} == '#') {
+ if ($id === false) $id = substr($element, 1);
+ }
+ }
+
+ # compose attributes as string
+ $attr_str = "";
+ if (!empty($id)) {
+ $attr_str .= ' id="'.$id.'"';
+ }
+ if (!empty($classes)) {
+ $attr_str .= ' class="'.implode(" ", $classes).'"';
+ }
+ return $attr_str;
+ }
+
+
+ protected function stripLinkDefinitions($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];
+ $this->urls[$link_id] = $url;
+ $this->titles[$link_id] =& $matches[4];
+ $this->ref_attr[$link_id] = $this->doExtraAttributes("", $dummy =& $matches[5]);
+ return ''; # String that will replace the block
+ }
+
+
+ ### HTML Block Parser ###
+
+ # Tags that are always treated as block tags:
+ protected $block_tags_re = 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|address|form|fieldset|iframe|hr|legend|article|section|nav|aside|hgroup|header|footer|figcaption|figure';
+
+ # Tags treated as block tags only if the opening tag is alone on its line:
+ protected $context_block_tags_re = 'script|noscript|style|ins|del|iframe|object|source|track|param|math|svg|canvas|audio|video';
+
+ # Tags where markdown="1" default to span mode:
+ protected $contain_span_tags_re = 'p|h[1-6]|li|dd|dt|td|th|legend|address';
+
+ # Tags which must not have their contents modified, no matter where
+ # they appear:
+ protected $clean_tags_re = 'script|style|math|svg';
+
+ # Tags that do not need to be closed.
+ protected $auto_close_tags_re = 'hr|img|param|source|track';
+
+
+ protected function hashHTMLBlocks($text) {
+ #
+ # Hashify HTML Blocks and "clean tags".
+ #
+ # We only want to do this for block-level HTML tags, such as headers,
+ # lists, and tables. That's because we still want to wrap <p>s around
+ # "paragraphs" that are wrapped in non-block-level tags, such as anchors,
+ # phrase emphasis, and spans. The list of tags we're looking for is
+ # hard-coded.
+ #
+ # This works by calling _HashHTMLBlocks_InMarkdown, which then calls
+ # _HashHTMLBlocks_InHTML when it encounter block tags. When the markdown="1"
+ # attribute is found within a tag, _HashHTMLBlocks_InHTML calls back
+ # _HashHTMLBlocks_InMarkdown to handle the Markdown syntax within the tag.
+ # These two functions are calling each other. It's recursive!
+ #
+ if ($this->no_markup) return $text;
+
+ #
+ # Call the HTML-in-Markdown hasher.
+ #
+ list($text, ) = $this->_hashHTMLBlocks_inMarkdown($text);
+
+ return $text;
+ }
+ protected function _hashHTMLBlocks_inMarkdown($text, $indent = 0,
+ $enclosing_tag_re = '', $span = false)
+ {
+ #
+ # Parse markdown text, calling _HashHTMLBlocks_InHTML for block tags.
+ #
+ # * $indent is the number of space to be ignored when checking for code
+ # blocks. This is important because if we don't take the indent into
+ # account, something like this (which looks right) won't work as expected:
+ #
+ # <div>
+ # <div markdown="1">
+ # Hello World. <-- Is this a Markdown code block or text?
+ # </div> <-- Is this a Markdown code block or a real tag?
+ # <div>
+ #
+ # If you don't like this, just don't indent the tag on which
+ # you apply the markdown="1" attribute.
+ #
+ # * If $enclosing_tag_re is not empty, stops at the first unmatched closing
+ # tag with that name. Nested tags supported.
+ #
+ # * If $span is true, text inside must treated as span. So any double
+ # newline will be replaced by a single newline so that it does not create
+ # paragraphs.
+ #
+ # Returns an array of that form: ( processed text , remaining text )
+ #
+ if ($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("", ':');
+ $newline = "$void\n";
+ $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.
+ $tag_re = preg_quote($tag); # For use in a regular expression.
+
+ #
+ # 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,
+ $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.'(?!`)}',
+ $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} == '/') $depth--;
+ else if ($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, $text);
+ }
+ protected function _hashHTMLBlocks_inHTML($text, $hash_method, $md_attr) {
+ #
+ # Parse HTML, calling _HashHTMLBlocks_InMarkdown for block tags.
+ #
+ # * Calls $hash_method to convert any blocks.
+ # * Stops when the first opening tag closes.
+ # * $md_attr indicate if the use of the `markdown="1"` attribute is allowed.
+ # (it is not inside clean tags)
+ #
+ # Returns an array of that form: ( processed text , remaining text )
+ #
+ if ($text === '') return array('', '');
+
+ # Regex to match `markdown` attribute inside of a tag.
+ $markdown_attr_re = '
+ {
+ \s* # Eat whitespace before the `markdown` attribute
+ markdown
+ \s*=\s*
+ (?>
+ (["\']) # $1: quote delimiter
+ (.*?) # $2: attribute value
+ \1 # matching delimiter
+ |
+ ([^\s>]*) # $3: unquoted attribute value
+ )
+ () # $4: make $3 always defined (avoid warnings)
+ }xs';
+
+ # Regex to match any tag.
+ $tag_re = '{
+ ( # $2: Capture whole tag.
+ </? # Any opening or closing tag.
+ [\w:$]+ # Tag name.
+ (?:
+ (?=[\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
+ )
+ }xs';
+
+ $original_text = $text; # Save original text in case of faliure.
+
+ $depth = 0; # Current depth inside the tag tree.
+ $block_text = ""; # Temporary text holder for current text.
+ $parsed = ""; # Parsed text that will be returned.
+
+ #
+ # Get the name of the starting tag.
+ # (This pattern makes $base_tag_name_re safe without quoting.)
+ #
+ if (preg_match('/^<([\w:$]*)\b/', $text, $matches))
+ $base_tag_name_re = $matches[1];
+
+ #
+ # Loop through every tag until we find the corresponding closing tag.
+ #
+ 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.
+ #
+ $parts = preg_split($tag_re, $text, 2, PREG_SPLIT_DELIM_CAPTURE);
+
+ if (count($parts) < 3) {
+ #
+ # End of $text reached with unbalenced tag(s).
+ # In that case, we return original text unchanged and pass the
+ # first character as filtered to prevent an infinite loop in the
+ # parent function.
+ #
+ return array($original_text{0}, substr($original_text, 1));
+ }
+
+ $block_text .= $parts[0]; # Text before current tag.
+ $tag = $parts[1]; # Tag to handle.
+ $text = $parts[2]; # Remaining text after current tag.
+
+ #
+ # Check for: Auto-close tag (like <hr/>)
+ # Comments and Processing Instructions.
+ #
+ if (preg_match('{^</?(?:'.$this->auto_close_tags_re.')\b}', $tag) ||
+ $tag{1} == '!' || $tag{1} == '?')
+ {
+ # Just add the tag to the block as if it was text.
+ $block_text .= $tag;
+ }
+ else {
+ #
+ # Increase/decrease nested tag count. Only do so if
+ # the tag's name match base tag's.
+ #
+ if (preg_match('{^</?'.$base_tag_name_re.'\b}', $tag)) {
+ if ($tag{1} == '/') $depth--;
+ else if ($tag{strlen($tag)-2} != '/') $depth++;
+ }
+
+ #
+ # Check for `markdown="1"` attribute and handle it.
+ #
+ if ($md_attr &&
+ preg_match($markdown_attr_re, $tag, $attr_m) &&
+ preg_match('/^1|block|span$/', $attr_m[2] . $attr_m[3]))
+ {
+ # Remove `markdown` attribute from opening tag.
+ $tag = preg_replace($markdown_attr_re, '', $tag);
+
+ # Check if text inside this tag must be parsed in span mode.
+ $this->mode = $attr_m[2] . $attr_m[3];
+ $span_mode = $this->mode == 'span' || $this->mode != 'block' &&
+ preg_match('{^<(?:'.$this->contain_span_tags_re.')\b}', $tag);
+
+ # Calculate indent before tag.
+ if (preg_match('/(?:^|\n)( *?)(?! ).*?$/', $block_text, $matches)) {
+ $strlen = $this->utf8_strlen;
+ $indent = $strlen($matches[1], 'UTF-8');
+ } else {
+ $indent = 0;
+ }
+
+ # End preceding block with this tag.
+ $block_text .= $tag;
+ $parsed .= $this->$hash_method($block_text);
+
+ # Get enclosing tag name for the ParseMarkdown function.
+ # (This pattern makes $tag_name_re safe without quoting.)
+ preg_match('/^<([\w:$]*)\b/', $tag, $matches);
+ $tag_name_re = $matches[1];
+
+ # Parse the content using the HTML-in-Markdown parser.
+ list ($block_text, $text)
+ = $this->_hashHTMLBlocks_inMarkdown($text, $indent,
+ $tag_name_re, $span_mode);
+
+ # Outdent markdown text.
+ if ($indent > 0) {
+ $block_text = preg_replace("/^[ ]{1,$indent}/m", "",
+ $block_text);
+ }
+
+ # Append tag content to parsed text.
+ if (!$span_mode) $parsed .= "\n\n$block_text\n\n";
+ else $parsed .= "$block_text";
+
+ # Start over with a new block.
+ $block_text = "";
+ }
+ else $block_text .= $tag;
+ }
+
+ } while ($depth > 0);
+
+ #
+ # Hash last block text that wasn't processed inside the loop.
+ #
+ $parsed .= $this->$hash_method($block_text);
+
+ return array($parsed, $text);
+ }
+
+
+ protected function hashClean($text) {
+ #
+ # Called whenever a tag must be hashed when a function inserts a "clean" tag
+ # in $text, it passes through this function and is automaticaly escaped,
+ # blocking invalid nested overlap.
+ #
+ return $this->hashPart($text, 'C');
+ }
+
+
+ protected function doAnchors($text) {
+ #
+ # Turn Markdown link shortcuts into XHTML <a> tags.
+ #
+ if ($this->in_anchor) return $text;
+ $this->in_anchor = true;
+
+ #
+ # First, handle reference-style links: [link text] [id]
+ #
+ $text = preg_replace_callback('{
+ ( # wrap whole match in $1
+ \[
+ ('.$this->nested_brackets_re.') # link text = $2
+ \]
+
+ [ ]? # one optional space
+ (?:\n[ ]*)? # one optional newline followed by spaces
+
+ \[
+ (.*?) # id = $3
+ \]
+ )
+ }xs',
+ array($this, '_doAnchors_reference_callback'), $text);
+
+ #
+ # Next, inline-style links: [link text](url "optional title")
+ #
+ $text = preg_replace_callback('{
+ ( # wrap whole match in $1
+ \[
+ ('.$this->nested_brackets_re.') # link text = $2
+ \]
+ \( # literal paren
+ [ \n]*
+ (?:
+ <(.+?)> # href = $3
+ |
+ ('.$this->nested_url_parenthesis_re.') # href = $4
+ )
+ [ \n]*
+ ( # $5
+ ([\'"]) # quote char = $6
+ (.*?) # Title = $7
+ \6 # matching quote
+ [ \n]* # ignore any spaces/tabs between closing quote and )
+ )? # title is optional
+ \)
+ (?:[ ]? '.$this->id_class_attr_catch_re.' )? # $8 = id/class attributes
+ )
+ }xs',
+ array($this, '_doAnchors_inline_callback'), $text);
+
+ #
+ # Last, handle reference-style shortcuts: [link text]
+ # These must come last in case you've also got [link text][1]
+ # or [link text](/foo)
+ #
+ $text = preg_replace_callback('{
+ ( # wrap whole match in $1
+ \[
+ ([^\[\]]+) # link text = $2; can\'t contain [ or ]
+ \]
+ )
+ }xs',
+ array($this, '_doAnchors_reference_callback'), $text);
+
+ $this->in_anchor = false;
+ return $text;
+ }
+ protected function _doAnchors_reference_callback($matches) {
+ $whole_match = $matches[1];
+ $link_text = $matches[2];
+ $link_id =& $matches[3];
+
+ if ($link_id == "") {
+ # for shortcut links like [this][] or [this].
+ $link_id = $link_text;
+ }
+
+ # lower-case and turn embedded newlines into spaces
+ $link_id = strtolower($link_id);
+ $link_id = preg_replace('{[ ]?\n}', ' ', $link_id);
+
+ if (isset($this->urls[$link_id])) {
+ $url = $this->urls[$link_id];
+ $url = $this->encodeURLAttribute($url);
+
+ $result = "<a href=\"$url\"";
+ if ( isset( $this->titles[$link_id] ) ) {
+ $title = $this->titles[$link_id];
+ $title = $this->encodeAttribute($title);
+ $result .= " title=\"$title\"";
+ }
+ if (isset($this->ref_attr[$link_id]))
+ $result .= $this->ref_attr[$link_id];
+
+ $link_text = $this->runSpanGamut($link_text);
+ $result .= ">$link_text</a>";
+ $result = $this->hashPart($result);
+ }
+ else {
+ $result = $whole_match;
+ }
+ return $result;
+ }
+ protected function _doAnchors_inline_callback($matches) {
+ $whole_match = $matches[1];
+ $link_text = $this->runSpanGamut($matches[2]);
+ $url = $matches[3] == '' ? $matches[4] : $matches[3];
+ $title =& $matches[7];
+ $attr = $this->doExtraAttributes("a", $dummy =& $matches[8]);
+
+ // if the URL was of the form <s p a c e s> it got caught by the HTML
+ // tag parser and hashed. Need to reverse the process before using the URL.
+ $unhashed = $this->unhash($url);
+ if ($unhashed != $url)
+ $url = preg_replace('/^<(.*)>$/', '\1', $unhashed);
+
+ $url = $this->encodeURLAttribute($url);
+
+ $result = "<a href=\"$url\"";
+ if (isset($title)) {
+ $title = $this->encodeAttribute($title);
+ $result .= " title=\"$title\"";
+ }
+ $result .= $attr;
+
+ $link_text = $this->runSpanGamut($link_text);
+ $result .= ">$link_text</a>";
+
+ return $this->hashPart($result);
+ }
+
+
+ protected function doImages($text) {
+ #
+ # Turn Markdown image shortcuts into <img> tags.
+ #
+ #
+ # First, handle reference-style labeled images: ![alt text][id]
+ #
+ $text = preg_replace_callback('{
+ ( # wrap whole match in $1
+ !\[
+ ('.$this->nested_brackets_re.') # alt text = $2
+ \]
+
+ [ ]? # one optional space
+ (?:\n[ ]*)? # one optional newline followed by spaces
+
+ \[
+ (.*?) # id = $3
+ \]
+
+ )
+ }xs',
+ array($this, '_doImages_reference_callback'), $text);
+
+ #
+ # Next, handle inline images: 
+ # Don't forget: encode * and _
+ #
+ $text = preg_replace_callback('{
+ ( # wrap whole match in $1
+ !\[
+ ('.$this->nested_brackets_re.') # alt text = $2
+ \]
+ \s? # One optional whitespace character
+ \( # literal paren
+ [ \n]*
+ (?:
+ <(\S*)> # src url = $3
+ |
+ ('.$this->nested_url_parenthesis_re.') # src url = $4
+ )
+ [ \n]*
+ ( # $5
+ ([\'"]) # quote char = $6
+ (.*?) # title = $7
+ \6 # matching quote
+ [ \n]*
+ )? # title is optional
+ \)
+ (?:[ ]? '.$this->id_class_attr_catch_re.' )? # $8 = id/class attributes
+ )
+ }xs',
+ array($this, '_doImages_inline_callback'), $text);
+
+ return $text;
+ }
+ protected function _doImages_reference_callback($matches) {
+ $whole_match = $matches[1];
+ $alt_text = $matches[2];
+ $link_id = strtolower($matches[3]);
+
+ if ($link_id == "") {
+ $link_id = strtolower($alt_text); # for shortcut links like ![this][].
+ }
+
+ $alt_text = $this->encodeAttribute($alt_text);
+ if (isset($this->urls[$link_id])) {
+ $url = $this->encodeURLAttribute($this->urls[$link_id]);
+ $result = "<img src=\"$url\" alt=\"$alt_text\"";
+ if (isset($this->titles[$link_id])) {
+ $title = $this->titles[$link_id];
+ $title = $this->encodeAttribute($title);
+ $result .= " title=\"$title\"";
+ }
+ if (isset($this->ref_attr[$link_id]))
+ $result .= $this->ref_attr[$link_id];
+ $result .= $this->empty_element_suffix;
+ $result = $this->hashPart($result);
+ }
+ else {
+ # If there's no such link ID, leave intact:
+ $result = $whole_match;
+ }
+
+ return $result;
+ }
+ protected function _doImages_inline_callback($matches) {
+ $whole_match = $matches[1];
+ $alt_text = $matches[2];
+ $url = $matches[3] == '' ? $matches[4] : $matches[3];
+ $title =& $matches[7];
+ $attr = $this->doExtraAttributes("img", $dummy =& $matches[8]);
+
+ $alt_text = $this->encodeAttribute($alt_text);
+ $url = $this->encodeURLAttribute($url);
+ $result = "<img src=\"$url\" alt=\"$alt_text\"";
+ if (isset($title)) {
+ $title = $this->encodeAttribute($title);
+ $result .= " title=\"$title\""; # $title already quoted
+ }
+ $result .= $attr;
+ $result .= $this->empty_element_suffix;
+
+ return $this->hashPart($result);
+ }
+
+
+ protected function doHeaders($text) {
+ #
+ # Redefined to add id and class attribute support.
+ #
+ # Setext-style headers:
+ # Header 1 {#header1}
+ # ========
+ #
+ # Header 2 {#header2 .class1 .class2}
+ # --------
+ #
+ $text = preg_replace_callback(
+ '{
+ (^.+?) # $1: Header text
+ (?:[ ]+ '.$this->id_class_attr_catch_re.' )? # $3 = id/class attributes
+ [ ]*\n(=+|-+)[ ]*\n+ # $3: Header footer
+ }mx',
+ array($this, '_doHeaders_callback_setext'), $text);
+
+ # atx-style headers:
+ # # Header 1 {#header1}
+ # ## Header 2 {#header2}
+ # ## Header 2 with closing hashes ## {#header3.class1.class2}
+ # ...
+ # ###### Header 6 {.class2}
+ #
+ $text = preg_replace_callback('{
+ ^(\#{1,6}) # $1 = string of #\'s
+ [ ]*
+ (.+?) # $2 = Header text
+ [ ]*
+ \#* # optional closing #\'s (not counted)
+ (?:[ ]+ '.$this->id_class_attr_catch_re.' )? # $3 = id/class attributes
+ [ ]*
+ \n+
+ }xm',
+ array($this, '_doHeaders_callback_atx'), $text);
+
+ return $text;
+ }
+ protected function _doHeaders_callback_setext($matches) {
+ if ($matches[3] == '-' && preg_match('{^- }', $matches[1]))
+ return $matches[0];
+ $level = $matches[3]{0} == '=' ? 1 : 2;
+ $attr = $this->doExtraAttributes("h$level", $dummy =& $matches[2]);
+ $block = "<h$level$attr>".$this->runSpanGamut($matches[1])."</h$level>";
+ return "\n" . $this->hashBlock($block) . "\n\n";
+ }
+ protected function _doHeaders_callback_atx($matches) {
+ $level = strlen($matches[1]);
+ $attr = $this->doExtraAttributes("h$level", $dummy =& $matches[3]);
+ $block = "<h$level$attr>".$this->runSpanGamut($matches[2])."</h$level>";
+ return "\n" . $this->hashBlock($block) . "\n\n";
+ }
+
+
+ protected function doTables($text) {
+ #
+ # Form HTML tables.
+ #
+ $less_than_tab = $this->tab_width - 1;
+ #
+ # Find tables with leading pipe.
+ #
+ # | Header 1 | Header 2
+ # | -------- | --------
+ # | Cell 1 | Cell 2
+ # | Cell 3 | Cell 4
+ #
+ $text = preg_replace_callback('
+ {
+ ^ # Start of a line
+ [ ]{0,'.$less_than_tab.'} # Allowed whitespace.
+ [|] # Optional leading pipe (present)
+ (.+) \n # $1: Header row (at least one pipe)
+
+ [ ]{0,'.$less_than_tab.'} # Allowed whitespace.
+ [|] ([ ]*[-:]+[-| :]*) \n # $2: Header underline
+
+ ( # $3: Cells
+ (?>
+ [ ]* # Allowed whitespace.
+ [|] .* \n # Row content.
+ )*
+ )
+ (?=\n|\Z) # Stop at final double newline.
+ }xm',
+ array($this, '_doTable_leadingPipe_callback'), $text);
+
+ #
+ # Find tables without leading pipe.
+ #
+ # Header 1 | Header 2
+ # -------- | --------
+ # Cell 1 | Cell 2
+ # Cell 3 | Cell 4
+ #
+ $text = preg_replace_callback('
+ {
+ ^ # Start of a line
+ [ ]{0,'.$less_than_tab.'} # Allowed whitespace.
+ (\S.*[|].*) \n # $1: Header row (at least one pipe)
+
+ [ ]{0,'.$less_than_tab.'} # Allowed whitespace.
+ ([-:]+[ ]*[|][-| :]*) \n # $2: Header underline
+
+ ( # $3: Cells
+ (?>
+ .* [|] .* \n # Row content
+ )*
+ )
+ (?=\n|\Z) # Stop at final double newline.
+ }xm',
+ array($this, '_DoTable_callback'), $text);
+
+ return $text;
+ }
+ protected function _doTable_leadingPipe_callback($matches) {
+ $head = $matches[1];
+ $underline = $matches[2];
+ $content = $matches[3];
+
+ # Remove leading pipe for each row.
+ $content = preg_replace('/^ *[|]/m', '', $content);
+
+ return $this->_doTable_callback(array($matches[0], $head, $underline, $content));
+ }
+ protected function _doTable_makeAlignAttr($alignname)
+ {
+ if (empty($this->table_align_class_tmpl))
+ return " align=\"$alignname\"";
+
+ $classname = str_replace('%%', $alignname, $this->table_align_class_tmpl);
+ return " class=\"$classname\"";
+ }
+ protected function _doTable_callback($matches) {
+ $head = $matches[1];
+ $underline = $matches[2];
+ $content = $matches[3];
+
+ # Remove any tailing pipes for each line.
+ $head = preg_replace('/[|] *$/m', '', $head);
+ $underline = preg_replace('/[|] *$/m', '', $underline);
+ $content = preg_replace('/[|] *$/m', '', $content);
+
+ # Reading alignement from header underline.
+ $separators = preg_split('/ *[|] */', $underline);
+ foreach ($separators as $n => $s) {
+ if (preg_match('/^ *-+: *$/', $s))
+ $attr[$n] = $this->_doTable_makeAlignAttr('right');
+ else if (preg_match('/^ *:-+: *$/', $s))
+ $attr[$n] = $this->_doTable_makeAlignAttr('center');
+ else if (preg_match('/^ *:-+ *$/', $s))
+ $attr[$n] = $this->_doTable_makeAlignAttr('left');
+ else
+ $attr[$n] = '';
+ }
+
+ # Parsing span elements, including code spans, character escapes,
+ # and inline HTML tags, so that pipes inside those gets ignored.
+ $head = $this->parseSpan($head);
+ $headers = preg_split('/ *[|] */', $head);
+ $col_count = count($headers);
+ $attr = array_pad($attr, $col_count, '');
+
+ # Write column headers.
+ $text = "<table>\n";
+ $text .= "<thead>\n";
+ $text .= "<tr>\n";
+ foreach ($headers as $n => $header)
+ $text .= " <th$attr[$n]>".$this->runSpanGamut(trim($header))."</th>\n";
+ $text .= "</tr>\n";
+ $text .= "</thead>\n";
+
+ # Split content by row.
+ $rows = explode("\n", trim($content, "\n"));
+
+ $text .= "<tbody>\n";
+ foreach ($rows as $row) {
+ # Parsing span elements, including code spans, character escapes,
+ # and inline HTML tags, so that pipes inside those gets ignored.
+ $row = $this->parseSpan($row);
+
+ # Split row by cell.
+ $row_cells = preg_split('/ *[|] */', $row, $col_count);
+ $row_cells = array_pad($row_cells, $col_count, '');
+
+ $text .= "<tr>\n";
+ foreach ($row_cells as $n => $cell)
+ $text .= " <td$attr[$n]>".$this->runSpanGamut(trim($cell))."</td>\n";
+ $text .= "</tr>\n";
+ }
+ $text .= "</tbody>\n";
+ $text .= "</table>";
+
+ return $this->hashBlock($text) . "\n";
+ }
+
+
+ protected function doDefLists($text) {
+ #
+ # Form HTML definition lists.
+ #
+ # Prevent unescaped text, security bugfix for https://github.com/michelf/php-markdown/issues/175
+ if ($this->no_markup) return $text;
+
+ $less_than_tab = $this->tab_width - 1;
+
+ # Re-usable pattern to match any entire dl list:
+ $whole_list_re = '(?>
+ ( # $1 = whole list
+ ( # $2
+ [ ]{0,'.$less_than_tab.'}
+ ((?>.*\S.*\n)+) # $3 = defined term
+ \n?
+ [ ]{0,'.$less_than_tab.'}:[ ]+ # colon starting definition
+ )
+ (?s:.+?)
+ ( # $4
+ \z
+ |
+ \n{2,}
+ (?=\S)
+ (?! # Negative lookahead for another term
+ [ ]{0,'.$less_than_tab.'}
+ (?: \S.*\n )+? # defined term
+ \n?
+ [ ]{0,'.$less_than_tab.'}:[ ]+ # colon starting definition
+ )
+ (?! # Negative lookahead for another definition
+ [ ]{0,'.$less_than_tab.'}:[ ]+ # colon starting definition
+ )
+ )
+ )
+ )'; // mx
+
+ $text = preg_replace_callback('{
+ (?>\A\n?|(?<=\n\n))
+ '.$whole_list_re.'
+ }mx',
+ array($this, '_doDefLists_callback'), $text);
+
+ return $text;
+ }
+ protected function _doDefLists_callback($matches) {
+ # Re-usable patterns to match list item bullets and number markers:
+ $list = $matches[1];
+
+ # Turn double returns into triple returns, so that we can make a
+ # paragraph for the last item in a list, if necessary:
+ $result = trim($this->processDefListItems($list));
+ $result = "<dl>\n" . $result . "\n</dl>";
+ return $this->hashBlock($result) . "\n\n";
+ }
+
+
+ protected function processDefListItems($list_str) {
+ #
+ # Process the contents of a single definition list, splitting it
+ # into individual term and definition list items.
+ #
+ $less_than_tab = $this->tab_width - 1;
+
+ # trim trailing blank lines:
+ $list_str = preg_replace("/\n{2,}\\z/", "\n", $list_str);
+
+ # Process definition terms.
+ $list_str = preg_replace_callback('{
+ (?>\A\n?|\n\n+) # leading line
+ ( # definition terms = $1
+ [ ]{0,'.$less_than_tab.'} # leading whitespace
+ (?!\:[ ]|[ ]) # negative lookahead for a definition
+ # mark (colon) or more whitespace.
+ (?> \S.* \n)+? # actual term (not whitespace).
+ )
+ (?=\n?[ ]{0,3}:[ ]) # lookahead for following line feed
+ # with a definition mark.
+ }xm',
+ array($this, '_processDefListItems_callback_dt'), $list_str);
+
+ # Process actual definitions.
+ $list_str = preg_replace_callback('{
+ \n(\n+)? # leading line = $1
+ ( # marker space = $2
+ [ ]{0,'.$less_than_tab.'} # whitespace before colon
+ \:[ ]+ # definition mark (colon)
+ )
+ ((?s:.+?)) # definition text = $3
+ (?= \n+ # stop at next definition mark,
+ (?: # next term or end of text
+ [ ]{0,'.$less_than_tab.'} \:[ ] |
+ <dt> | \z
+ )
+ )
+ }xm',
+ array($this, '_processDefListItems_callback_dd'), $list_str);
+
+ return $list_str;
+ }
+ protected function _processDefListItems_callback_dt($matches) {
+ $terms = explode("\n", trim($matches[1]));
+ $text = '';
+ foreach ($terms as $term) {
+ $term = $this->runSpanGamut(trim($term));
+ $text .= "\n<dt>" . $term . "</dt>";
+ }
+ return $text . "\n";
+ }
+ protected function _processDefListItems_callback_dd($matches) {
+ $leading_line = $matches[1];
+ $marker_space = $matches[2];
+ $def = $matches[3];
+
+ if ($leading_line || preg_match('/\n{2,}/', $def)) {
+ # Replace marker with the appropriate whitespace indentation
+ $def = str_repeat(' ', strlen($marker_space)) . $def;
+ $def = $this->runBlockGamut($this->outdent($def . "\n\n"));
+ $def = "\n". $def ."\n";
+ }
+ else {
+ $def = rtrim($def);
+ $def = $this->runSpanGamut($this->outdent($def));
+ }
+
+ return "\n<dd>" . $def . "</dd>\n";
+ }
+
+
+ protected function doFencedCodeBlocks($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];
+ $codeblock = $matches[4];
+ $codeblock = htmlspecialchars($codeblock, ENT_NOQUOTES);
+ $codeblock = preg_replace_callback('/^\n+/',
+ array($this, '_doFencedCodeBlocks_newlines'), $codeblock);
+
+ if ($classname != "") {
+ if ($classname{0} == '.')
+ $classname = substr($classname, 1);
+ $attr_str = ' class="'.$this->code_class_prefix.$classname.'"';
+ } else {
+ $attr_str = $this->doExtraAttributes($this->code_attr_on_pre ? "pre" : "code", $attrs);
+ }
+ $pre_attr_str = $this->code_attr_on_pre ? $attr_str : '';
+ $code_attr_str = $this->code_attr_on_pre ? '' : $attr_str;
+ $codeblock = "<pre$pre_attr_str><code$code_attr_str>$codeblock</code></pre>";
+
+ return "\n\n".$this->hashBlock($codeblock)."\n\n";
+ }
+ protected function _doFencedCodeBlocks_newlines($matches) {
+ return str_repeat("<br$this->empty_element_suffix",
+ strlen($matches[0]));
+ }
+
+
+ #
+ # Redefining emphasis markers so that emphasis by underscore does not
+ # work in the middle of a word.
+ #
+ protected $em_relist = array(
+ '' => '(?:(?<!\*)\*(?!\*)|(?<![a-zA-Z0-9_])_(?!_))(?![\.,:;]?\s)',
+ '*' => '(?<![\s*])\*(?!\*)',
+ '_' => '(?<![\s_])_(?![a-zA-Z0-9_])',
+ );
+ protected $strong_relist = array(
+ '' => '(?:(?<!\*)\*\*(?!\*)|(?<![a-zA-Z0-9_])__(?!_))(?![\.,:;]?\s)',
+ '**' => '(?<![\s*])\*\*(?!\*)',
+ '__' => '(?<![\s_])__(?![a-zA-Z0-9_])',
+ );
+ protected $em_strong_relist = array(
+ '' => '(?:(?<!\*)\*\*\*(?!\*)|(?<![a-zA-Z0-9_])___(?!_))(?![\.,:;]?\s)',
+ '***' => '(?<![\s*])\*\*\*(?!\*)',
+ '___' => '(?<![\s_])___(?![a-zA-Z0-9_])',
+ );
+
+
+ protected function formParagraphs($text) {
+ #
+ # Params:
+ # $text - string to process with html <p> tags
+ #
+ # Strip leading and trailing lines:
+ $text = preg_replace('/\A\n+|\n+\z/', '', $text);
+
+ $grafs = preg_split('/\n{2,}/', $text, -1, PREG_SPLIT_NO_EMPTY);
+
+ #
+ # Wrap <p> tags and unhashify HTML blocks
+ #
+ foreach ($grafs as $key => $value) {
+ $value = trim($this->runSpanGamut($value));
+
+ # Check if this should be enclosed in a paragraph.
+ # Clean tag hashes & block tag hashes are left alone.
+ $is_p = !preg_match('/^B\x1A[0-9]+B|^C\x1A[0-9]+C$/', $value);
+
+ if ($is_p) {
+ $value = "<p>$value</p>";
+ }
+ $grafs[$key] = $value;
+ }
+
+ # Join grafs in one text, then unhash HTML tags.
+ $text = implode("\n\n", $grafs);
+
+ # Finish by removing any tag hashes still present in $text.
+ $text = $this->unhash($text);
+
+ return $text;
+ }
+
+
+ ### Footnotes
+
+ protected function stripFootnotes($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 or link definition 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]);
+ return ''; # String that will replace the block
+ }
+
+
+ protected function doFootnotes($text) {
+ #
+ # Replace footnote references in $text [^id] with a special text-token
+ # which will be replaced by the actual footnote marker in appendFootnotes.
+ #
+ if (!$this->in_anchor) {
+ $text = preg_replace('{\[\^(.+?)\]}', "F\x1Afn:\\1\x1A:", $text);
+ }
+ return $text;
+ }
+
+
+ protected function appendFootnotes($text) {
+ #
+ # Append footnote list to text.
+ #
+ $text = preg_replace_callback('{F\x1Afn:(.*?)\x1A:}',
+ array($this, '_appendFootnotes_callback'), $text);
+
+ if (!empty($this->footnotes_ordered)) {
+ $text .= "\n\n";
+ $text .= "<div class=\"footnotes\">\n";
+ $text .= "<hr". $this->empty_element_suffix ."\n";
+ $text .= "<ol>\n\n";
+
+ $attr = "";
+ if ($this->fn_backlink_class != "") {
+ $class = $this->fn_backlink_class;
+ $class = $this->encodeAttribute($class);
+ $attr .= " class=\"$class\"";
+ }
+ if ($this->fn_backlink_title != "") {
+ $title = $this->fn_backlink_title;
+ $title = $this->encodeAttribute($title);
+ $attr .= " title=\"$title\"";
+ }
+ $num = 0;
+
+ while (!empty($this->footnotes_ordered)) {
+ $footnote = reset($this->footnotes_ordered);
+ $note_id = key($this->footnotes_ordered);
+ unset($this->footnotes_ordered[$note_id]);
+ $ref_count = $this->footnotes_ref_count[$note_id];
+ unset($this->footnotes_ref_count[$note_id]);
+ unset($this->footnotes[$note_id]);
+
+ $footnote .= "\n"; # Need to append newline before parsing.
+ $footnote = $this->runBlockGamut("$footnote\n");
+ $footnote = preg_replace_callback('{F\x1Afn:(.*?)\x1A:}',
+ array($this, '_appendFootnotes_callback'), $footnote);
+
+ $attr = str_replace("%%", ++$num, $attr);
+ $note_id = $this->encodeAttribute($note_id);
+
+ # Prepare backlink, multiple backlinks if multiple references
+ $backlink = "<a href=\"#fnref:$note_id\"$attr>↩</a>";
+ for ($ref_num = 2; $ref_num <= $ref_count; ++$ref_num) {
+ $backlink .= " <a href=\"#fnref$ref_num:$note_id\"$attr>↩</a>";
+ }
+ # Add backlink to last paragraph; create new paragraph if needed.
+ if (preg_match('{</p>$}', $footnote)) {
+ $footnote = substr($footnote, 0, -4) . " $backlink</p>";
+ } else {
+ $footnote .= "\n\n<p>$backlink</p>";
+ }
+
+ $text .= "<li id=\"fn:$note_id\">\n";
+ $text .= $footnote . "\n";
+ $text .= "</li>\n\n";
+ }
+
+ $text .= "</ol>\n";
+ $text .= "</div>";
+ }
+ return $text;
+ }
+ protected function _appendFootnotes_callback($matches) {
+ $node_id = $this->fn_id_prefix . $matches[1];
+
+ # Create footnote marker only if it has a corresponding footnote *and*
+ # the footnote hasn't been used by another marker.
+ if (isset($this->footnotes[$node_id])) {
+ $num =& $this->footnotes_numbers[$node_id];
+ if (!isset($num)) {
+ # Transfer footnote content to the ordered list and give it its
+ # number
+ $this->footnotes_ordered[$node_id] = $this->footnotes[$node_id];
+ $this->footnotes_ref_count[$node_id] = 1;
+ $num = $this->footnote_counter++;
+ $ref_count_mark = '';
+ } else {
+ $ref_count_mark = $this->footnotes_ref_count[$node_id] += 1;
+ }
+
+ $attr = "";
+ if ($this->fn_link_class != "") {
+ $class = $this->fn_link_class;
+ $class = $this->encodeAttribute($class);
+ $attr .= " class=\"$class\"";
+ }
+ if ($this->fn_link_title != "") {
+ $title = $this->fn_link_title;
+ $title = $this->encodeAttribute($title);
+ $attr .= " title=\"$title\"";
+ }
+
+ $attr = str_replace("%%", $num, $attr);
+ $node_id = $this->encodeAttribute($node_id);
+
+ return
+ "<sup id=\"fnref$ref_count_mark:$node_id\">".
+ "<a href=\"#fn:$node_id\"$attr>$num</a>".
+ "</sup>";
+ }
+
+ return "[^".$matches[1]."]";
+ }
+
+
+ ### 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 = $matches[2];
+ if ($this->abbr_word_re)
+ $this->abbr_word_re .= '|';
+ $this->abbr_word_re .= preg_quote($abbr_word);
+ $this->abbr_desciptions[$abbr_word] = trim($abbr_desc);
+ return ''; # String that will replace the block
+ }
+
+
+ protected function doAbbreviations($text) {
+ #
+ # Find defined abbreviations in text and wrap them in <abbr> elements.
+ #
+ if ($this->abbr_word_re) {
+ // cannot use the /x modifier because abbr_word_re may
+ // contain significant spaces:
+ $text = preg_replace_callback('{'.
+ '(?<![\w\x1A])'.
+ '(?:'.$this->abbr_word_re.')'.
+ '(?![\w\x1A])'.
+ '}',
+ array($this, '_doAbbreviations_callback'), $text);
+ }
+ return $text;
+ }
+ protected function _doAbbreviations_callback($matches) {
+ $abbr = $matches[0];
+ if (isset($this->abbr_desciptions[$abbr])) {
+ $desc = $this->abbr_desciptions[$abbr];
+ if (empty($desc)) {
+ return $this->hashPart("<abbr>$abbr</abbr>");
+ } else {
+ $desc = $this->encodeAttribute($desc);
+ return $this->hashPart("<abbr title=\"$desc\">$abbr</abbr>");
+ }
+ } else {
+ return $matches[0];
+ }
+ }
+
+}
+
+$yellow->plugins->register("markdownextra", "YellowMarkdownExtra", YellowMarkdownExtra::Version);
+?>
+\ No newline at end of file
diff --git a/system/themes/default.css b/system/themes/default.css
@@ -1,11 +1,11 @@
-/* Yellow default theme 0.4.1 */
+/* Yellow default theme 0.4.2 */
html, body, div, form, pre, span, tr, th, td { margin:0; padding:0; border:0; vertical-align:baseline; }
body {
margin:1em;
background-color:#fff; color:#717171;
- font-family:Helvetica,sans-serif;
- font-size:0.95em;
+ font-family:"Helvetica Neue",Helvetica,sans-serif;
+ font-size:1.0em;
font-weight:200;
line-height:1.5;
}
@@ -15,10 +15,10 @@ code { font-size:1.1em; }
a { color:#07d; }
a:hover { color:#07d; text-decoration:underline; }
a, img { border:none; text-decoration:none; }
-.sitename h1 { margin-top:0.5em; margin-bottom:0em; font-size:2.5em; }
+.sitename h1 { margin-top:0.5em; margin-bottom:0em; font-size:2.2em; font-weight:500; }
.sitename a { color:#111; text-decoration:none; }
-.navigation { margin-bottom:1em; border-bottom:1px solid #ddd; line-height:2em; }
-.navigation a { color:#111; padding:0 0.3em; display:inline-block; }
+.navigation { margin-top:-0.5em; margin-bottom:1em; line-height:2em; }
+.navigation a { color:#717171; padding:0 0.3em; display:inline-block; }
.navigation a:hover { color:#07d; }
.navigation ul { margin:0 -0.3em; padding:0; list-style:none; }
.navigation li a.active { color:#111; }
@@ -30,7 +30,7 @@ a, img { border:none; text-decoration:none; }
.content form { margin:1em 0; }
.content .flexible { position:relative; padding-bottom:56.25%; padding-top:30px; }
.content .flexible iframe { position:absolute; top:0; left:0; width:100%; height:100%; }
-.footer { margin-top:1em; padding:1em 0em; border-top:1px solid #ddd; }
+.footer { margin-top:2em; }
.footer a { color:#717171; }
.footer a:hover { color:#07d; text-decoration:underline; }
.left { float:left; margin:0 1em 0 0; }
@@ -42,7 +42,7 @@ a, img { border:none; text-decoration:none; }
.page { margin:0 auto; max-width:62em; }
@media screen and (min-width:62em) {
- body { width:62em; margin:1em auto; }
+ body { width:60em; margin:1em auto; }
}
@media screen and (max-width:30em) {
body { margin:0.5em; font-size:0.9em; }
