From 3e56a631620ccac6268e756f56b855314243347f Mon Sep 17 00:00:00 2001 From: Hypolite Petovan Date: Sun, 14 Jan 2018 10:06:12 -0500 Subject: [PATCH] Remove library/php-markdown --- library/markdown.php | 5 +- library/php-markdown/License.md | 36 - library/php-markdown/Michelf/Markdown.inc.php | 10 - library/php-markdown/Michelf/Markdown.php | 1896 ----------------- .../Michelf/MarkdownExtra.inc.php | 11 - .../php-markdown/Michelf/MarkdownExtra.php | 1785 ---------------- .../Michelf/MarkdownInterface.inc.php | 9 - .../Michelf/MarkdownInterface.php | 38 - library/php-markdown/Readme.md | 384 ---- library/php-markdown/Readme.php | 31 - library/php-markdown/composer.json | 26 - 11 files changed, 2 insertions(+), 4229 deletions(-) delete mode 100644 library/php-markdown/License.md delete mode 100644 library/php-markdown/Michelf/Markdown.inc.php delete mode 100644 library/php-markdown/Michelf/Markdown.php delete mode 100644 library/php-markdown/Michelf/MarkdownExtra.inc.php delete mode 100644 library/php-markdown/Michelf/MarkdownExtra.php delete mode 100644 library/php-markdown/Michelf/MarkdownInterface.inc.php delete mode 100644 library/php-markdown/Michelf/MarkdownInterface.php delete mode 100644 library/php-markdown/Readme.md delete mode 100644 library/php-markdown/Readme.php delete mode 100644 library/php-markdown/composer.json diff --git a/library/markdown.php b/library/markdown.php index 8def53fcb..308d91bc7 100644 --- a/library/markdown.php +++ b/library/markdown.php @@ -6,14 +6,13 @@ * @brief Parser for Markdown files */ -require_once "library/php-markdown/Michelf/MarkdownExtra.inc.php"; use \Michelf\MarkdownExtra; /** * @brief This function parses a text using php-markdown library to render Markdown syntax to HTML * - * This function is using the php-markdown library by Michel Fortin to parse a - * string ($text).It returns the rendered HTML code from that text. The optional + * This function is using the php-markdown library by Michel Fortin to parse a + * string ($text).It returns the rendered HTML code from that text. The optional * $hardwrap parameter is used to switch between inserting hard breaks after * every linefeed, which is required for Diaspora compatibility, or not. The * later is used for parsing documentation and README.md files. diff --git a/library/php-markdown/License.md b/library/php-markdown/License.md deleted file mode 100644 index c16197b69..000000000 --- a/library/php-markdown/License.md +++ /dev/null @@ -1,36 +0,0 @@ -PHP Markdown Lib -Copyright (c) 2004-2016 Michel Fortin - -All rights reserved. - -Based on Markdown -Copyright (c) 2003-2006 John Gruber - -All rights reserved. - -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. diff --git a/library/php-markdown/Michelf/Markdown.inc.php b/library/php-markdown/Michelf/Markdown.inc.php deleted file mode 100644 index e2bd3808e..000000000 --- a/library/php-markdown/Michelf/Markdown.inc.php +++ /dev/null @@ -1,10 +0,0 @@ - - * @copyright 2004-2016 Michel Fortin - * @copyright (Original Markdown) 2004-2006 John Gruber - */ - -namespace Michelf; - -/** - * Markdown Parser Class - */ -class Markdown implements MarkdownInterface { - /** - * Define the package version - * @var string - */ - const MARKDOWNLIB_VERSION = "1.7.0"; - - /** - * Simple function interface - Initialize the parser and return the result - * of its transform method. This will work fine for derived classes too. - * - * @api - * - * @param string $text - * @return string - */ - public static function defaultTransform($text) { - // 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. - * @var string - */ - public $empty_element_suffix = " />"; - - /** - * The width of indentation of the output markup - * @var int - */ - public $tab_width = 4; - - /** - * Change to `true` to disallow markup or entities. - * @var boolean - */ - public $no_markup = false; - public $no_entities = false; - - - /** - * Change to `true` to enable line breaks on \n without two trailling spaces - * @var boolean - */ - public $hard_wrap = false; - - /** - * Predefined URLs and titles for reference links and images. - * @var array - */ - public $predef_urls = array(); - public $predef_titles = array(); - - /** - * Optional filter function for URLs - * @var callable - */ - public $url_filter_func = null; - - /** - * Optional header id="" generation callback function. - * @var callable - */ - public $header_id_func = null; - - /** - * Optional function for converting code block content to HTML - * @var callable - */ - public $code_block_content_func = null; - - /** - * Optional function for converting code span content to HTML. - * @var callable - */ - public $code_span_content_func = null; - - /** - * Class attribute to toggle "enhanced ordered list" behaviour - * setting this to true will allow ordered lists to start from the index - * number that is defined first. - * - * For example: - * 2. List item two - * 3. List item three - * - * Becomes: - *
    - *
  1. List item two
  2. - *
  3. List item three
  4. - *
- * - * @var bool - */ - public $enhanced_ordered_list = false; - - /** - * Parser implementation - */ - - /** - * Regex to match balanced [brackets]. - * Needed to insert a maximum bracked depth while converting to PHP. - * @var int - */ - 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: - * @var string - */ - protected $escape_chars = '\`*_{}[]()>#+-.!'; - protected $escape_chars_re; - - /** - * Constructor function. Initialize appropriate member variables. - * @return void - */ - public function __construct() { - $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. - * @var array - */ - protected $urls = array(); - protected $titles = array(); - protected $html_hashes = array(); - - /** - * Status flag to avoid invalid nesting. - * @var boolean - */ - protected $in_anchor = false; - - /** - * Called before the transformation process starts to setup parser states. - * @return void - */ - protected function setup() { - // Clear global hashes. - $this->urls = $this->predef_urls; - $this->titles = $this->predef_titles; - $this->html_hashes = array(); - $this->in_anchor = false; - } - - /** - * Called after the transformation process to clear any variable which may - * be taking up memory unnecessarly. - * @return void - */ - protected function teardown() { - $this->urls = array(); - $this->titles = array(); - $this->html_hashes = array(); - } - - /** - * Main function. Performs some preprocessing on the input text and pass - * it through the document gamut. - * - * @api - * - * @param string $text - * @return string - */ - public function transform($text) { - $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"; - } - - /** - * Define the document gamut - * @var array - */ - protected $document_gamut = array( - // Strip link definitions, store in hashes. - "stripLinkDefinitions" => 20, - "runBasicBlockGamut" => 30, - ); - - /** - * Strips link definitions from text, stores the URLs and titles in - * hash references - * @param string $text - * @return string - */ - protected function stripLinkDefinitions($text) { - - $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; - } - - /** - * The callback to strip link definitions - * @param array $matches - * @return string - */ - protected function _stripLinkDefinitions_callback($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 - } - - /** - * Hashify HTML blocks - * @param string $text - * @return string - */ - protected function hashHTMLBlocks($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

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(' - # 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.: - *

- *
- * tags for inner block must be indented. - *
- *
- * - * 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 `
` and stop at the - * first `
`. - */ - $text = preg_replace_callback('{(?> - (?> - (?<=\n) # Starting on its own line - | # or - \A\n? # the at beginning of the doc - ) - ( # save in $1 - - # Match from `\n` to `\n`, handling nested tags - # in between. - - [ ]{0,'.$less_than_tab.'} - <('.$block_tags_b_re.')# start tag = $2 - '.$attr.'> # attributes followed by > and \n - '.$content.' # content, support nesting - # the matching end tag - [ ]* # trailing spaces/tabs - (?=\n+|\Z) # followed by a newline or end of document - - | # Special version for tags of group a. - - [ ]{0,'.$less_than_tab.'} - <('.$block_tags_a_re.')# start tag = $3 - '.$attr.'>[ ]*\n # attributes followed by > - '.$content2.' # content, support nesting - # the matching end tag - [ ]* # trailing spaces/tabs - (?=\n+|\Z) # followed by a newline or end of document - - | # Special case just for
. It was easier to make a special - # case than to make the other regex more complicated. - - [ ]{0,'.$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,'.$less_than_tab.'} - (?s: - - ) - [ ]* - (?=\n{2,}|\Z) # followed by a blank line or end of document - - | # PHP and ASP-style processor instructions ( - ) - [ ]* - (?=\n{2,}|\Z) # followed by a blank line or end of document - - ) - )}Sxmi', - array($this, '_hashHTMLBlocks_callback'), - $text - ); - - return $text; - } - - /** - * The callback for hashing HTML blocks - * @param string $matches - * @return string - */ - protected function _hashHTMLBlocks_callback($matches) { - $text = $matches[1]; - $key = $this->hashBlock($text); - return "\n\n$key\n\n"; - } - - /** - * 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. - * - * @param string $text - * @param string $boundary - * @return string - */ - protected function hashPart($text, $boundary = 'X') { - // 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. - } - - /** - * Shortcut function for hashPart with block-level boundaries. - * @param string $text - * @return string - */ - protected function hashBlock($text) { - return $this->hashPart($text, 'B'); - } - - /** - * Define the block gamut - these are all the transformations that form - * block-level tags like paragraphs, headers, and list items. - * @var array - */ - protected $block_gamut = array( - "doHeaders" => 10, - "doHorizontalRules" => 20, - "doLists" => 40, - "doCodeBlocks" => 50, - "doBlockQuotes" => 60, - ); - - /** - * 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. - * - * @param string $text - * @return string - */ - protected function runBlockGamut($text) { - $text = $this->hashHTMLBlocks($text); - return $this->runBasicBlockGamut($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. - * - * @param string $text - * @return string - */ - protected function runBasicBlockGamut($text) { - - foreach ($this->block_gamut as $method => $priority) { - $text = $this->$method($text); - } - - // Finally form paragraph and restore hashed blocks. - $text = $this->formParagraphs($text); - - return $text; - } - - /** - * Convert horizontal rules - * @param string $text - * @return string - */ - protected function doHorizontalRules($text) { - 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("empty_element_suffix")."\n", - $text - ); - } - - /** - * These are all the transformations that occur *within* block-level - * tags like paragraphs, headers, and list items. - * @var array - */ - protected $span_gamut = array( - // 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 `` - // Must come after doAnchors, because you can use < and > - // delimiters in inline links like [this](). - "doAutoLinks" => 30, - "encodeAmpsAndAngles" => 40, - "doItalicsAndBold" => 50, - "doHardBreaks" => 60, - ); - - /** - * Run span gamut transformations - * @param string $text - * @return string - */ - protected function runSpanGamut($text) { - foreach ($this->span_gamut as $method => $priority) { - $text = $this->$method($text); - } - - return $text; - } - - /** - * Do hard breaks - * @param string $text - * @return string - */ - protected function doHardBreaks($text) { - if ($this->hard_wrap) { - return preg_replace_callback('/ *\n/', - array($this, '_doHardBreaks_callback'), $text); - } else { - return preg_replace_callback('/ {2,}\n/', - array($this, '_doHardBreaks_callback'), $text); - } - } - - /** - * Trigger part hashing for the hard break (callback method) - * @param array $matches - * @return string - */ - protected function _doHardBreaks_callback($matches) { - return $this->hashPart("empty_element_suffix\n"); - } - - /** - * Turn Markdown link shortcuts into XHTML tags. - * @param string $text - * @return string - */ - protected function doAnchors($text) { - 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; - } - - /** - * Callback method to parse referenced anchors - * @param string $matches - * @return string - */ - protected function _doAnchors_reference_callback($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); - - $result = "titles[$link_id] ) ) { - $title = $this->titles[$link_id]; - $title = $this->encodeAttribute($title); - $result .= " title=\"$title\""; - } - - $link_text = $this->runSpanGamut($link_text); - $result .= ">$link_text"; - $result = $this->hashPart($result); - } else { - $result = $whole_match; - } - return $result; - } - - /** - * Callback method to parse inline anchors - * @param string $matches - * @return string - */ - protected function _doAnchors_inline_callback($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 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); - - $result = "encodeAttribute($title); - $result .= " title=\"$title\""; - } - - $link_text = $this->runSpanGamut($link_text); - $result .= ">$link_text"; - - return $this->hashPart($result); - } - - /** - * Turn Markdown image shortcuts into tags. - * @param string $text - * @return string - */ - protected function doImages($text) { - // 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: ![alt text](url "optional title") - // 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; - } - - /** - * Callback to parse references image tags - * @param array $matches - * @return string - */ - protected function _doImages_reference_callback($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]); - $result = "\"$alt_text\"";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; - } - - /** - * Callback to parse inline image tags - * @param array $matches - * @return string - */ - protected function _doImages_inline_callback($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); - $result = "\"$alt_text\"";encodeAttribute($title); - $result .= " title=\"$title\""; // $title already quoted - } - $result .= $this->empty_element_suffix; - - return $this->hashPart($result); - } - - /** - * Parse Markdown heading elements to HTML - * @param string $text - * @return string - */ - protected function doHeaders($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; - } - - /** - * Setext header parsing callback - * @param array $matches - * @return string - */ - protected function _doHeaders_callback_setext($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; - - // ID attribute generation - $idAtt = $this->_generateIdFromHeaderValue($matches[1]); - - $block = "".$this->runSpanGamut($matches[1]).""; - return "\n" . $this->hashBlock($block) . "\n\n"; - } - - /** - * ATX header parsing callback - * @param array $matches - * @return string - */ - protected function _doHeaders_callback_atx($matches) { - // ID attribute generation - $idAtt = $this->_generateIdFromHeaderValue($matches[2]); - - $level = strlen($matches[1]); - $block = "".$this->runSpanGamut($matches[2]).""; - return "\n" . $this->hashBlock($block) . "\n\n"; - } - - /** - * If a header_id_func property is set, we can use it to automatically - * generate an id attribute. - * - * This method returns a string in the form id="foo", or an empty string - * otherwise. - * @param string $headerValue - * @return string - */ - protected function _generateIdFromHeaderValue($headerValue) { - if (!is_callable($this->header_id_func)) { - return ""; - } - - $idValue = call_user_func($this->header_id_func, $headerValue); - if (!$idValue) { - return ""; - } - - return ' id="' . $this->encodeAttribute($idValue) . '"'; - } - - /** - * Form HTML ordered (numbered) and unordered (bulleted) lists. - * @param string $text - * @return string - */ - protected function doLists($text) { - $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; - } - - /** - * List parsing callback - * @param array $matches - * @return string - */ - protected function _doLists_callback($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)"; - $marker_ol_start_re = '[0-9]+'; - - $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); - - $ol_start = 1; - if ($this->enhanced_ordered_list) { - // Get the start number for ordered list. - if ($list_type == 'ol') { - $ol_start_array = array(); - $ol_start_check = preg_match("/$marker_ol_start_re/", $matches[4], $ol_start_array); - if ($ol_start_check){ - $ol_start = $ol_start_array[0]; - } - } - } - - if ($ol_start > 1 && $list_type == 'ol'){ - $result = $this->hashBlock("<$list_type start=\"$ol_start\">\n" . $result . ""); - } else { - $result = $this->hashBlock("<$list_type>\n" . $result . ""); - } - return "\n". $result ."\n\n"; - } - - /** - * Nesting tracker for list levels - * @var integer - */ - protected $list_level = 0; - - /** - * Process the contents of a single ordered or unordered list, splitting it - * into individual list items. - * @param string $list_str - * @param string $marker_any_re - * @return string - */ - protected function processListItems($list_str, $marker_any_re) { - /** - * 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; - } - - /** - * List item parsing callback - * @param array $matches - * @return string - */ - protected function _processListItems_callback($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 = $this->formParagraphs($item, false); - } - - return "
  • " . $item . "
  • \n"; - } - - /** - * Process Markdown `
    ` blocks.
    -	 * @param  string $text
    -	 * @return string
    -	 */
    -	protected function doCodeBlocks($text) {
    -		$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;
    -	}
    -
    -	/**
    -	 * Code block parsing callback
    -	 * @param  array $matches
    -	 * @return string
    -	 */
    -	protected function _doCodeBlocks_callback($matches) {
    -		$codeblock = $matches[1];
    -
    -		$codeblock = $this->outdent($codeblock);
    -		if ($this->code_block_content_func) {
    -			$codeblock = call_user_func($this->code_block_content_func, $codeblock, "");
    -		} else {
    -			$codeblock = htmlspecialchars($codeblock, ENT_NOQUOTES);
    -		}
    -
    -		# trim leading newlines and trailing newlines
    -		$codeblock = preg_replace('/\A\n+|\n+\z/', '', $codeblock);
    -
    -		$codeblock = "
    $codeblock\n
    "; - return "\n\n" . $this->hashBlock($codeblock) . "\n\n"; - } - - /** - * Create a code span markup for $code. Called from handleSpanToken. - * @param string $code - * @return string - */ - protected function makeCodeSpan($code) { - if ($this->code_span_content_func) { - $code = call_user_func($this->code_span_content_func, $code); - } else { - $code = htmlspecialchars(trim($code), ENT_NOQUOTES); - } - return $this->hashPart("$code"); - } - - /** - * Define the emphasis operators with their regex matches - * @var array - */ - protected $em_relist = array( - '' => '(?:(? '(? '(? '(?:(? '(? '(? '(?:(? '(? '(?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; - } - } - } - - /** - * Convert Markdown italics (emphasis) and bold (strong) to HTML - * @param string $text - * @return string - */ - protected function doItalicsAndBold($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); - $span = "$span"; - $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"; - $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"; - $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); - $span = "$span"; - $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); - $span = "$span"; - $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]; - } - - /** - * Parse Markdown blockquotes to HTML - * @param string $text - * @return string - */ - protected function doBlockQuotes($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; - } - - /** - * Blockquote parsing callback - * @param array $matches - * @return string - */ - protected function _doBlockQuotes_callback($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
     content,
    -		// so we need to fix that:
    -		$bq = preg_replace_callback('{(\s*
    .+?
    )}sx', - array($this, '_doBlockQuotes_callback2'), $bq); - - return "\n" . $this->hashBlock("
    \n$bq\n
    ") . "\n\n"; - } - - /** - * Blockquote parsing callback - * @param array $matches - * @return string - */ - protected function _doBlockQuotes_callback2($matches) { - $pre = $matches[1]; - $pre = preg_replace('/^ /m', '', $pre); - return $pre; - } - - /** - * Parse paragraphs - * - * @param string $text String to process in paragraphs - * @param boolean $wrap_in_p Whether paragraphs should be wrapped in

    tags - * @return string - */ - protected function formParagraphs($text, $wrap_in_p = true) { - // 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

    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); - if ($wrap_in_p) { - $value = preg_replace('/^([ ]*)/', "

    ", $value); - $value .= "

    "; - } - $grafs[$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 =
    tag -//
    ]* -// \b -// markdown\s*=\s* ([\'"]) # $2 = attr quote char -// 1 -// \2 -// [^>]* -// > -// ) -// ( # $3 = contents -// .* -// ) -// (
    ) # $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); - } - - /** - * Encode text for a double-quoted HTML attribute. This function - * is *not* suitable for attributes enclosed in single quotes. - * @param string $text - * @return string - */ - protected function encodeAttribute($text) { - $text = $this->encodeAmpsAndAngles($text); - $text = str_replace('"', '"', $text); - return $text; - } - - /** - * 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. - * - * @param string $url - * @param string &$text Passed by reference - * @return string URL - */ - protected function encodeURLAttribute($url, &$text = null) { - 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; - } - - /** - * 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. - * @param string $text - * @return string - */ - protected function encodeAmpsAndAngles($text) { - if ($this->no_entities) { - $text = str_replace('&', '&', $text); - } else { - // Ampersand-encoding based entirely on Nat Irons's Amputator - // MT plugin: - $text = preg_replace('/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/', - '&', $text); - } - // Encode remaining <'s - $text = str_replace('<', '<', $text); - - return $text; - } - - /** - * Parse Markdown automatic links to anchor HTML tags - * @param string $text - * @return string - */ - protected function doAutoLinks($text) { - $text = preg_replace_callback('{<((https?|ftp|dict|tel):[^\'">\s]+)>}i', - array($this, '_doAutoLinks_url_callback'), $text); - - // Email addresses: - $text = preg_replace_callback('{ - < - (?:mailto:)? - ( - (?: - [-!#$%&\'*+/=?^_`.{|}~\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; - } - - /** - * Parse URL callback - * @param array $matches - * @return string - */ - protected function _doAutoLinks_url_callback($matches) { - $url = $this->encodeURLAttribute($matches[1], $text); - $link = "$text"; - return $this->hashPart($link); - } - - /** - * Parse email address callback - * @param array $matches - * @return string - */ - protected function _doAutoLinks_email_callback($matches) { - $addr = $matches[1]; - $url = $this->encodeURLAttribute("mailto:$addr", $text); - $link = "$text"; - return $this->hashPart($link); - } - - /** - * 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. - * - * @param string $text - * @param string &$tail - * @param integer $head_length - * @return string - */ - protected function encodeEntityObfuscatedAttribute($text, &$tail = null, $head_length = 0) { - if ($text == "") { - return $tail = ""; - } - - $chars = preg_split('/(? $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; - } - - /** - * Take the string $str and parse it into tokens, hashing embeded HTML, - * escaped characters and handling code spans. - * @param string $str - * @return string - */ - protected function parseSpan($str) { - $output = ''; - - $span_re = '{ - ( - \\\\'.$this->escape_chars_re.' - | - (?no_markup ? '' : ' - | - # comment - | - <\?.*?\?> | <%.*?%> # processing instruction - | - <[!$]?[-a-zA-Z0-9:_]+ # regular tags - (?> - \s - (?>[^"\'>]+|"[^"]*"|\'[^\']*\')* - )? - > - | - <[-a-zA-Z0-9:_]+\s*/> # xml-style empty tag - | - # 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; - } - - /** - * Handle $token provided by parseSpan by determining its nature and - * returning the corresponding value that should replace it. - * @param string $token - * @param string &$str - * @return string - */ - protected function handleSpanToken($token, &$str) { - 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); - } - } - - /** - * Remove one level of line-leading tabs or spaces - * @param string $text - * @return string - */ - protected function outdent($text) { - return preg_replace('/^(\t|[ ]{1,' . $this->tab_width . '})/m', '', $text); - } - - - /** - * String length function for detab. `_initDetab` will create a function to - * handle UTF-8 if the default function does not exist. - * @var string - */ - protected $utf8_strlen = 'mb_strlen'; - - /** - * Replace tabs with the appropriate amount of spaces. - * - * 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. - * - * @param string $text - * @return string - */ - protected function detab($text) { - $text = preg_replace_callback('/^.*\t.*$/m', - array($this, '_detab_callback'), $text); - - return $text; - } - - /** - * Replace tabs callback - * @param string $matches - * @return string - */ - protected function _detab_callback($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 $line; - } - - /** - * Check for the availability of the function in the `utf8_strlen` property - * (initially `mb_strlen`). If the function is not available, create a - * function that will loosely count the number of UTF-8 characters with a - * regular expression. - * @return void - */ - protected function _initDetab() { - - if (function_exists($this->utf8_strlen)) { - return; - } - - $this->utf8_strlen = create_function('$text', 'return preg_match_all( - "/[\\\\x00-\\\\xBF]|[\\\\xC0-\\\\xFF][\\\\x80-\\\\xBF]*/", - $text, $m);'); - } - - /** - * Swap back in all the tags hashed by _HashHTMLBlocks. - * @param string $text - * @return string - */ - protected function unhash($text) { - return preg_replace_callback('/(.)\x1A[0-9]+\1/', - array($this, '_unhash_callback'), $text); - } - - /** - * Unhashing callback - * @param array $matches - * @return string - */ - protected function _unhash_callback($matches) { - return $this->html_hashes[$matches[0]]; - } -} diff --git a/library/php-markdown/Michelf/MarkdownExtra.inc.php b/library/php-markdown/Michelf/MarkdownExtra.inc.php deleted file mode 100644 index d09bd7a48..000000000 --- a/library/php-markdown/Michelf/MarkdownExtra.inc.php +++ /dev/null @@ -1,11 +0,0 @@ - - * @copyright 2004-2016 Michel Fortin - * @copyright (Original Markdown) 2004-2006 John Gruber - */ - -namespace Michelf; - -/** - * Markdown Extra Parser Class - */ -class MarkdownExtra extends \Michelf\Markdown { - /** - * Configuration variables - */ - - /** - * Prefix for footnote ids. - * @var string - */ - public $fn_id_prefix = ""; - - /** - * Optional title attribute for footnote links and backlinks. - * @var string - */ - public $fn_link_title = ""; - public $fn_backlink_title = ""; - - /** - * Optional class attribute for footnote links and backlinks. - * @var string - */ - public $fn_link_class = "footnote-ref"; - public $fn_backlink_class = "footnote-backref"; - - /** - * Content to be displayed within footnote backlinks. The default is '↩'; - * the U+FE0E on the end is a Unicode variant selector used to prevent iOS - * from displaying the arrow character as an emoji. - * @var string - */ - public $fn_backlink_html = '↩︎'; - - /** - * 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. - * @var string - */ - public $table_align_class_tmpl = ''; - - /** - * Optional class prefix for fenced code block. - * @var string - */ - 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. - * @var boolean - */ - public $code_attr_on_pre = false; - - /** - * Predefined abbreviations. - * @var array - */ - public $predef_abbr = array(); - - /** - * Parser implementation - */ - - /** - * Constructor function. Initialize the parser object. - * @return void - */ - public function __construct() { - // 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, - ); - - $this->enhanced_ordered_list = true; - parent::__construct(); - } - - - /** - * Extra variables used during extra transformations. - * @var array - */ - protected $footnotes = array(); - protected $footnotes_ordered = array(); - protected $footnotes_ref_count = array(); - protected $footnotes_numbers = array(); - protected $abbr_desciptions = array(); - /** @var string */ - protected $abbr_word_re = ''; - - /** - * Give the current footnote number. - * @var integer - */ - protected $footnote_counter = 1; - - /** - * Setting up Extra-specific variables. - */ - protected function setup() { - 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); - } - } - - /** - * Clearing Extra-specific variables. - */ - protected function teardown() { - $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) - * @var string - */ - protected $id_class_attr_catch_re = '\{((?>[ ]*[#.a-z][-_:a-zA-Z0-9=]+){1,})[ ]*\}'; - - /** - * Expression to use when parsing in a context when no capture is desired - * @var string - */ - protected $id_class_attr_nocatch_re = '\{(?>[ ]*[#.a-z][-_:a-zA-Z0-9=]+){1,}[ ]*\}'; - - /** - * 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. - * - * In addition, this method also supports supplying a default Id value, - * which will be used to populate the id attribute in case it was not - * overridden. - * @param string $tag_name - * @param string $attr - * @param mixed $defaultIdValue - * @param array $classes - * @return string - */ - protected function doExtraAttributes($tag_name, $attr, $defaultIdValue = null, $classes = array()) { - if (empty($attr) && !$defaultIdValue && empty($classes)) return ""; - - // Split on components - preg_match_all('/[#.a-z][-_:a-zA-Z0-9=]+/', $attr, $matches); - $elements = $matches[0]; - - // Handle classes and IDs (only first ID taken into account) - $attributes = 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); - } else if (strpos($element, '=') > 0) { - $parts = explode('=', $element, 2); - $attributes[] = $parts[0] . '="' . $parts[1] . '"'; - } - } - - if (!$id) $id = $defaultIdValue; - - // Compose attributes as string - $attr_str = ""; - if (!empty($id)) { - $attr_str .= ' id="'.$this->encodeAttribute($id) .'"'; - } - if (!empty($classes)) { - $attr_str .= ' class="'. implode(" ", $classes) . '"'; - } - if (!$this->no_markup && !empty($attributes)) { - $attr_str .= ' '.implode(" ", $attributes); - } - return $attr_str; - } - - /** - * Strips link definitions from text, stores the URLs and titles in - * hash references. - * @param string $text - * @return string - */ - protected function stripLinkDefinitions($text) { - $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; - } - - /** - * Strip link definition callback - * @param array $matches - * @return string - */ - protected function _stripLinkDefinitions_callback($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 - * @var string - */ - 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 - * @var string - */ - 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: - * @var string - */ - 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 - * @var string - */ - protected $clean_tags_re = 'script|style|math|svg'; - - /** - * Tags that do not need to be closed. - * @var string - */ - protected $auto_close_tags_re = 'hr|img|param|source|track'; - - /** - * 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

    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! - * @param string $text - * @return string - */ - protected function hashHTMLBlocks($text) { - if ($this->no_markup) { - return $text; - } - - // Call the HTML-in-Markdown hasher. - list($text, ) = $this->_hashHTMLBlocks_inMarkdown($text); - - return $text; - } - - /** - * 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: - * - *

    - *
    - * Hello World. <-- Is this a Markdown code block or text? - *
    <-- Is this a Markdown code block or a real tag? - *
    - * - * 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 ) - * - * @param string $text - * @param integer $indent - * @param string $enclosing_tag_re - * @param boolean $span - * @return array - */ - protected function _hashHTMLBlocks_inMarkdown($text, $indent = 0, - $enclosing_tag_re = '', $span = false) - { - - if ($text === '') return array('', ''); - - // Regex to check for the presense of newlines around a block tag. - $newline_before_re = '/(?:^\n?|\n\n)*$/'; - $newline_after_re = - '{ - ^ # Start of text following the tag. - (?>[ ]*)? # Optional comment. - [ ]*\n # Must be followed by newline. - }xs'; - - // Regex to match any tag. - $block_tag_re = - '{ - ( # $2: Capture whole tag. - # 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 Block - ' . ( !$span ? ' # If not in span. - | - # Indented code block - (?: ^[ ]*\n | ^ | \n[ ]*\n ) - [ ]{' . ($indent + 4) . '}[^\n]* \n - (?> - (?: [ ]{' . ($indent + 4) . '}[^\n]* | [ ]* ) \n - )* - | - # Fenced code block marker - (?<= ^ | \n ) - [ ]{0,' . ($indent + 3) . '}(?:~{3,}|`{3,}) - [ ]* - (?: \.?[-_:a-zA-Z0-9]+ )? # standalone class name - [ ]* - (?: ' . $this->id_class_attr_nocatch_re . ' )? # extra attributes - [ ]* - (?= \n ) - ' : '' ) . ' # End (if not is span). - | - # Code span marker - # Note, this regex needs to go after backtick fenced - # code blocks but it should also be kept outside of the - # "if not in span" condition adding backticks to the parser - `+ - ) - }xs'; - - - $depth = 0; // Current depth inside the tag tree. - $parsed = ""; // Parsed text that will be returned. - - // Loop through every tag until we find the closing tag of the parent - // or loop until reaching the end of text if no parent tag specified. - do { - // Split the text using the first $tag_match pattern found. - // Text before pattern will be first in the array, text after - // pattern will be at the end, and between will be any catches made - // by the pattern. - $parts = preg_split($block_tag_re, $text, 2, - PREG_SPLIT_DELIM_CAPTURE); - - // If in Markdown span mode, add a empty-string span-level hash - // after each newline to prevent triggering any block element. - if ($span) { - $void = $this->hashPart("", ':'); - $newline = "\n$void"; - $parts[0] = $void . str_replace("\n", $newline, $parts[0]) . $void; - } - - $parsed .= $parts[0]; // Text before current tag. - - // If end of $text has been reached. Stop loop. - if (count($parts) < 3) { - $text = ""; - break; - } - - $tag = $parts[1]; // Tag to handle. - $text = $parts[2]; // Remaining text after current tag. - $tag_re = preg_quote($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))*?(?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('{^= 0); - - return array($parsed, $text); - } - - /** - * 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 ) - * @param string $text - * @param string $hash_method - * @param string $md_attr - * @return array - */ - protected function _hashHTMLBlocks_inHTML($text, $hash_method, $md_attr) { - if ($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. - - ".*?" | # Double quotes (can contain `>`) - \'.*?\' | # Single quotes (can contain `>`) - .+? # Anything but quotes and `>`. - )*? - )? - > # End of tag. - | - # HTML Comment - | - <\?.*?\?> | <%.*?%> # Processing instruction - | - # 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
    ) - // Comments and Processing Instructions. - if (preg_match('{^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('{^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); - } - - /** - * 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. - * @param string $text - * @return string - */ - protected function hashClean($text) { - return $this->hashPart($text, 'C'); - } - - /** - * Turn Markdown link shortcuts into XHTML tags. - * @param string $text - * @return string - */ - protected function doAnchors($text) { - 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; - } - - /** - * Callback for reference anchors - * @param array $matches - * @return string - */ - protected function _doAnchors_reference_callback($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); - - $result = "titles[$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"; - $result = $this->hashPart($result); - } - else { - $result = $whole_match; - } - return $result; - } - - /** - * Callback for inline anchors - * @param array $matches - * @return string - */ - protected function _doAnchors_inline_callback($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 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); - - $result = "encodeAttribute($title); - $result .= " title=\"$title\""; - } - $result .= $attr; - - $link_text = $this->runSpanGamut($link_text); - $result .= ">$link_text"; - - return $this->hashPart($result); - } - - /** - * Turn Markdown image shortcuts into tags. - * @param string $text - * @return string - */ - protected function doImages($text) { - // 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: ![alt text](url "optional title") - // 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; - } - - /** - * Callback for referenced images - * @param array $matches - * @return string - */ - protected function _doImages_reference_callback($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]); - $result = "\"$alt_text\"";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; - } - - /** - * Callback for inline images - * @param array $matches - * @return string - */ - protected function _doImages_inline_callback($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); - $result = "\"$alt_text\"";encodeAttribute($title); - $result .= " title=\"$title\""; // $title already quoted - } - $result .= $attr; - $result .= $this->empty_element_suffix; - - return $this->hashPart($result); - } - - /** - * Process markdown headers. Redefined to add ID and class attribute support. - * @param string $text - * @return string - */ - protected function doHeaders($text) { - // 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; - } - - /** - * Callback for setext headers - * @param array $matches - * @return string - */ - protected function _doHeaders_callback_setext($matches) { - if ($matches[3] == '-' && preg_match('{^- }', $matches[1])) { - return $matches[0]; - } - - $level = $matches[3]{0} == '=' ? 1 : 2; - - $defaultId = is_callable($this->header_id_func) ? call_user_func($this->header_id_func, $matches[1]) : null; - - $attr = $this->doExtraAttributes("h$level", $dummy =& $matches[2], $defaultId); - $block = "" . $this->runSpanGamut($matches[1]) . ""; - return "\n" . $this->hashBlock($block) . "\n\n"; - } - - /** - * Callback for atx headers - * @param array $matches - * @return string - */ - protected function _doHeaders_callback_atx($matches) { - $level = strlen($matches[1]); - - $defaultId = is_callable($this->header_id_func) ? call_user_func($this->header_id_func, $matches[2]) : null; - $attr = $this->doExtraAttributes("h$level", $dummy =& $matches[3], $defaultId); - $block = "" . $this->runSpanGamut($matches[2]) . ""; - return "\n" . $this->hashBlock($block) . "\n\n"; - } - - /** - * Form HTML tables. - * @param string $text - * @return string - */ - protected function doTables($text) { - $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; - } - - /** - * Callback for removing the leading pipe for each row - * @param array $matches - * @return string - */ - protected function _doTable_leadingPipe_callback($matches) { - $head = $matches[1]; - $underline = $matches[2]; - $content = $matches[3]; - - $content = preg_replace('/^ *[|]/m', '', $content); - - return $this->_doTable_callback(array($matches[0], $head, $underline, $content)); - } - - /** - * Make the align attribute in a table - * @param string $alignname - * @return string - */ - protected function _doTable_makeAlignAttr($alignname) - { - if (empty($this->table_align_class_tmpl)) { - return " align=\"$alignname\""; - } - - $classname = str_replace('%%', $alignname, $this->table_align_class_tmpl); - return " class=\"$classname\""; - } - - /** - * Calback for processing tables - * @param array $matches - * @return string - */ - protected function _doTable_callback($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 = "\n"; - $text .= "\n"; - $text .= "\n"; - foreach ($headers as $n => $header) - $text .= " " . $this->runSpanGamut(trim($header)) . "\n"; - $text .= "\n"; - $text .= "\n"; - - // Split content by row. - $rows = explode("\n", trim($content, "\n")); - - $text .= "\n"; - foreach ($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, ''); - - $text .= "\n"; - foreach ($row_cells as $n => $cell) - $text .= " " . $this->runSpanGamut(trim($cell)) . "\n"; - $text .= "\n"; - } - $text .= "\n"; - $text .= "
    "; - - return $this->hashBlock($text) . "\n"; - } - - /** - * Form HTML definition lists. - * @param string $text - * @return string - */ - protected function doDefLists($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; - } - - /** - * Callback for processing definition lists - * @param array $matches - * @return string - */ - protected function _doDefLists_callback($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 = "
    \n" . $result . "\n
    "; - return $this->hashBlock($result) . "\n\n"; - } - - /** - * Process the contents of a single definition list, splitting it - * into individual term and definition list items. - * @param string $list_str - * @return string - */ - protected function processDefListItems($list_str) { - - $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,' . $less_than_tab . '} \:[ ] | -
    | \z - ) - ) - }xm', - array($this, '_processDefListItems_callback_dd'), $list_str); - - return $list_str; - } - - /** - * Callback for
    elements in definition lists - * @param array $matches - * @return string - */ - protected function _processDefListItems_callback_dt($matches) { - $terms = explode("\n", trim($matches[1])); - $text = ''; - foreach ($terms as $term) { - $term = $this->runSpanGamut(trim($term)); - $text .= "\n
    " . $term . "
    "; - } - return $text . "\n"; - } - - /** - * Callback for
    elements in definition lists - * @param array $matches - * @return string - */ - protected function _processDefListItems_callback_dd($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
    " . $def . "
    \n"; - } - - /** - * Adding the fenced code block syntax to regular Markdown: - * - * ~~~ - * Code block - * ~~~ - * - * @param string $text - * @return string - */ - protected function doFencedCodeBlocks($text) { - - $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; - } - - /** - * Callback to process fenced code blocks - * @param array $matches - * @return string - */ - protected function _doFencedCodeBlocks_callback($matches) { - $classname =& $matches[2]; - $attrs =& $matches[3]; - $codeblock = $matches[4]; - - if ($this->code_block_content_func) { - $codeblock = call_user_func($this->code_block_content_func, $codeblock, $classname); - } else { - $codeblock = htmlspecialchars($codeblock, ENT_NOQUOTES); - } - - $codeblock = preg_replace_callback('/^\n+/', - array($this, '_doFencedCodeBlocks_newlines'), $codeblock); - - $classes = array(); - if ($classname != "") { - if ($classname{0} == '.') - $classname = substr($classname, 1); - $classes[] = $this->code_class_prefix . $classname; - } - $attr_str = $this->doExtraAttributes($this->code_attr_on_pre ? "pre" : "code", $attrs, null, $classes); - $pre_attr_str = $this->code_attr_on_pre ? $attr_str : ''; - $code_attr_str = $this->code_attr_on_pre ? '' : $attr_str; - $codeblock = "$codeblock
    "; - - return "\n\n".$this->hashBlock($codeblock)."\n\n"; - } - - /** - * Replace new lines in fenced code blocks - * @param array $matches - * @return string - */ - protected function _doFencedCodeBlocks_newlines($matches) { - return str_repeat("empty_element_suffix", - strlen($matches[0])); - } - - /** - * Redefining emphasis markers so that emphasis by underscore does not - * work in the middle of a word. - * @var array - */ - protected $em_relist = array( - '' => '(?:(? '(? '(? '(?:(? '(? '(? '(?:(? '(? '(? tags - * @return string HTML output - */ - protected function formParagraphs($text, $wrap_in_p = true) { - // 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

    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 = $wrap_in_p && !preg_match('/^B\x1A[0-9]+B|^C\x1A[0-9]+C$/', $value); - - if ($is_p) { - $value = "

    $value

    "; - } - $grafs[$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 - Strips link definitions from text, stores the URLs and - * titles in hash references. - * @param string $text - * @return string - */ - protected function stripFootnotes($text) { - $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; - } - - /** - * Callback for stripping footnotes - * @param array $matches - * @return string - */ - protected function _stripFootnotes_callback($matches) { - $note_id = $this->fn_id_prefix . $matches[1]; - $this->footnotes[$note_id] = $this->outdent($matches[2]); - return ''; // String that will replace the block - } - - /** - * Replace footnote references in $text [^id] with a special text-token - * which will be replaced by the actual footnote marker in appendFootnotes. - * @param string $text - * @return string - */ - protected function doFootnotes($text) { - if (!$this->in_anchor) { - $text = preg_replace('{\[\^(.+?)\]}', "F\x1Afn:\\1\x1A:", $text); - } - return $text; - } - - /** - * Append footnote list to text - * @param string $text - * @return string - */ - protected function appendFootnotes($text) { - $text = preg_replace_callback('{F\x1Afn:(.*?)\x1A:}', - array($this, '_appendFootnotes_callback'), $text); - - if (!empty($this->footnotes_ordered)) { - $text .= "\n\n"; - $text .= "
    \n"; - $text .= "empty_element_suffix . "\n"; - $text .= "
      \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\""; - } - $backlink_text = $this->fn_backlink_html; - $num = 0; - - while (!empty($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 - $backlink = "$backlink_text"; - for ($ref_num = 2; $ref_num <= $ref_count; ++$ref_num) { - $backlink .= " $backlink_text"; - } - // Add backlink to last paragraph; create new paragraph if needed. - if (preg_match('{

      $}', $footnote)) { - $footnote = substr($footnote, 0, -4) . " $backlink

      "; - } else { - $footnote .= "\n\n

      $backlink

      "; - } - - $text .= "
    1. \n"; - $text .= $footnote . "\n"; - $text .= "
    2. \n\n"; - } - - $text .= "
    \n"; - $text .= "
    "; - } - return $text; - } - - /** - * Callback for appending footnotes - * @param array $matches - * @return string - */ - protected function _appendFootnotes_callback($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 - "". - "$num". - ""; - } - - return "[^" . $matches[1] . "]"; - } - - - /** - * Abbreviations - strips abbreviations from text, stores titles in hash - * references. - * @param string $text - * @return string - */ - protected function stripAbbreviations($text) { - $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; - } - - /** - * Callback for stripping abbreviations - * @param array $matches - * @return string - */ - protected function _stripAbbreviations_callback($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 - } - - /** - * Find defined abbreviations in text and wrap them in elements. - * @param string $text - * @return string - */ - protected function doAbbreviations($text) { - if ($this->abbr_word_re) { - // cannot use the /x modifier because abbr_word_re may - // contain significant spaces: - $text = preg_replace_callback('{' . - '(?abbr_word_re . ')' . - '(?![\w\x1A])' . - '}', - array($this, '_doAbbreviations_callback'), $text); - } - return $text; - } - - /** - * Callback for processing abbreviations - * @param array $matches - * @return string - */ - protected function _doAbbreviations_callback($matches) { - $abbr = $matches[0]; - if (isset($this->abbr_desciptions[$abbr])) { - $desc = $this->abbr_desciptions[$abbr]; - if (empty($desc)) { - return $this->hashPart("$abbr"); - } else { - $desc = $this->encodeAttribute($desc); - return $this->hashPart("$abbr"); - } - } else { - return $matches[0]; - } - } -} diff --git a/library/php-markdown/Michelf/MarkdownInterface.inc.php b/library/php-markdown/Michelf/MarkdownInterface.inc.php deleted file mode 100644 index c4e9ac7f6..000000000 --- a/library/php-markdown/Michelf/MarkdownInterface.inc.php +++ /dev/null @@ -1,9 +0,0 @@ - - * @copyright 2004-2016 Michel Fortin - * @copyright (Original Markdown) 2004-2006 John Gruber - */ - -namespace Michelf; - -/** - * Markdown Parser Interface - */ -interface MarkdownInterface { - /** - * Initialize the parser and return the result of its transform method. - * This will work fine for derived classes too. - * - * @api - * - * @param string $text - * @return string - */ - public static function defaultTransform($text); - - /** - * Main function. Performs some preprocessing on the input text - * and pass it through the document gamut. - * - * @api - * - * @param string $text - * @return string - */ - public function transform($text); -} diff --git a/library/php-markdown/Readme.md b/library/php-markdown/Readme.md deleted file mode 100644 index 63e8c1ece..000000000 --- a/library/php-markdown/Readme.md +++ /dev/null @@ -1,384 +0,0 @@ -PHP Markdown -============ - -PHP Markdown Lib 1.7.0 - 29 Oct 2016 - -by Michel Fortin - - -based on Markdown by John Gruber - - - -Introduction ------------- - -This is a library package that includes the PHP Markdown parser and its -sibling PHP Markdown Extra with additional features. - -Markdown is a text-to-HTML conversion tool for web writers. Markdown -allows you to write using an easy-to-read, easy-to-write plain text -format, then convert it to structurally valid XHTML (or HTML). - -"Markdown" is actually two things: a plain text markup syntax, and a -software tool, originally written in Perl, that converts the plain text -markup to HTML. PHP Markdown is a port to PHP of the original Markdown -program by John Gruber. - -* [Full documentation of the Markdown syntax]() - — Daring Fireball (John Gruber) -* [Markdown Extra syntax additions]() - — Michel Fortin - - -Requirement ------------ - -This library package requires PHP 5.3 or later. - -Note: The older plugin/library hybrid package for PHP Markdown and -PHP Markdown Extra is still maintained and will work with PHP 4.0.5 and later. - -Before PHP 5.3.7, pcre.backtrack_limit defaults to 100 000, which is too small -in many situations. You might need to set it to higher values. Later PHP -releases defaults to 1 000 000, which is usually fine. - - -Usage ------ - -This library package is meant to be used with class autoloading. For autoloading -to work, your project needs have setup a PSR-0-compatible autoloader. See the -included Readme.php file for a minimal autoloader setup. (If you cannot use -autoloading, see below.) - -With class autoloading in place, putting the 'Michelf' folder in your -include path should be enough for this to work: - - use \Michelf\Markdown; - $my_html = Markdown::defaultTransform($my_text); - -Markdown Extra syntax is also available the same way: - - use \Michelf\MarkdownExtra; - $my_html = MarkdownExtra::defaultTransform($my_text); - -If you wish to use PHP Markdown with another text filter function -built to parse HTML, you should filter the text *after* the `transform` -function call. This is an example with [PHP SmartyPants][psp]: - - use \Michelf\Markdown, \Michelf\SmartyPants; - $my_html = Markdown::defaultTransform($my_text); - $my_html = SmartyPants::defaultTransform($my_html); - -All these examples are using the static `defaultTransform` static function -found inside the parser class. If you want to customize the parser -configuration, you can also instantiate it directly and change some -configuration variables: - - use \Michelf\MarkdownExtra; - $parser = new MarkdownExtra; - $parser->fn_id_prefix = "post22-"; - $my_html = $parser->transform($my_text); - -To learn more, see the full list of [configuration variables]. - - [configuration variables]: https://michelf.ca/projects/php-markdown/configuration/ - - -### Usage without an autoloader - -If you cannot use class autoloading, you can still use `include` or `require` -to access the parser. To load the `\Michelf\Markdown` parser, do it this way: - - require_once 'Michelf/Markdown.inc.php'; - -Or, if you need the `\Michelf\MarkdownExtra` parser: - - require_once 'Michelf/MarkdownExtra.inc.php'; - -While the plain `.php` files depend on autoloading to work correctly, using the -`.inc.php` files instead will eagerly load the dependencies that would be -loaded on demand if you were using autoloading. - - -Public API and Versioning Policy ---------------------------------- - -Version numbers are of the form *major*.*minor*.*patch*. - -The public API of PHP Markdown consist of the two parser classes `Markdown` -and `MarkdownExtra`, their constructors, the `transform` and `defaultTransform` -functions and their configuration variables. The public API is stable for -a given major version number. It might get additions when the minor version -number increments. - -**Protected members are not considered public API.** This is unconventional -and deserves an explanation. Incrementing the major version number every time -the underlying implementation of something changes is going to give -nonessential version numbers for the vast majority of people who just use the -parser. Protected members are meant to create parser subclasses that behave in -different ways. Very few people create parser subclasses. I don't want to -discourage it by making everything private, but at the same time I can't -guarantee any stable hook between versions if you use protected members. - -**Syntax changes** will increment the minor number for new features, and the -patch number for small corrections. A *new feature* is something that needs a -change in the syntax documentation. Note that since PHP Markdown Lib includes -two parsers, a syntax change for either of them will increment the minor -number. Also note that there is nothing perfectly backward-compatible with the -Markdown syntax: all inputs are always valid, so new features always replace -something that was previously legal, although generally nonsensical to do. - - -Bugs ----- - -To file bug reports please send email to: - - -Please include with your report: (1) the example input; (2) the output you -expected; (3) the output PHP Markdown actually produced. - -If you have a problem where Markdown gives you an empty result, first check -that the backtrack limit is not too low by running `php --info | grep pcre`. -See Installation and Requirement above for details. - - -Development and Testing ------------------------ - -Pull requests for fixing bugs are welcome. Proposed new features are -going to be meticulously reviewed -- taking into account backward compatibility, -potential side effects, and future extensibility -- before deciding on -acceptance or rejection. - -If you make a pull request that includes changes to the parser please add -tests for what is being changed to [MDTest][] and make a pull request there -too. - - [MDTest]: https://github.com/michelf/mdtest/ - - -Donations ---------- - -If you wish to make a donation that will help me devote more time to -PHP Markdown, please visit [michelf.ca/donate] or send Bitcoin to -[1HiuX34czvVPPdhXbUAsAu7pZcesniDCGH]. - - [michelf.ca/donate]: https://michelf.ca/donate/#!Thanks%20for%20PHP%20Markdown - [1HiuX34czvVPPdhXbUAsAu7pZcesniDCGH]: bitcoin:1HiuX34czvVPPdhXbUAsAu7pZcesniDCGH - - -Version History ---------------- - -PHP Markdown Lib 1.7.0 (29 Oct 2016) - -* Added a `hard_wrap` configuration variable to make all newline characters - in the text become `
    ` tags in the HTML output. By default, according - to the standard Markdown syntax these newlines are ignored unless they a - preceded by two spaces. Thanks to Jonathan Cohlmeyer for the implementation. - -* Improved the parsing of list items to fix problematic cases that came to - light with the addition of `hard_wrap`. This should have no effect on the - output except span-level list items that ended with two spaces (and thus - ended with a line break). - -* Added a `code_span_content_func` configuration variable which takes a - function that will convert the content of the code span to HTML. This can - be useful to implement syntax highlighting. Although contrary to its - code block equivalent, there is no syntax for specifying a language. - Credits to styxit for the implementation. - -* Fixed a Markdown Extra issue where two-space-at-end-of-line hard breaks - wouldn't work inside of HTML block elements such as `

    ` - where the element expects only span-level content. - -* In the parser code, switched to PHPDoc comment format. Thanks to - Robbie Averill for the help. - - -PHP Markdown Lib 1.6.0 (23 Dec 2015) - -Note: this version was incorrectly released as 1.5.1 on Dec 22, a number -that contradicted the versioning policy. - -* For fenced code blocks in Markdown Extra, can now set a class name for the - code block's language before the special attribute block. Previously, this - class name was only allowed in the absence of the special attribute block. - -* Added a `code_block_content_func` configuration variable which takes a - function that will convert the content of the code block to HTML. This is - most useful for syntax highlighting. For fenced code blocks in Markdown - Extra, the function has access to the language class name (the one outside - of the special attribute block). Credits to Mario Konrad for providing the - implementation. - -* The curled arrow character for the backlink in footnotes is now followed - by a Unicode variant selector to prevent it from being displayed in emoji - form on iOS. - - Note that in older browsers the variant selector is often interpreted as a - separate character, making it visible after the arrow. So there is now a - also a `fn_backlink_html` configuration variable that can be used to set - the link text to something else. Credits to Dana for providing the - implementation. - -* Fixed an issue in MarkdownExtra where long header lines followed by a - special attribute block would hit the backtrack limit an cause an empty - string to be returned. - - -PHP Markdown Lib 1.5.0 (1 Mar 2015) - -* Added the ability start ordered lists with a number different from 1 and - and have that reflected in the HTML output. This can be enabled with - the `enhanced_ordered_lists` configuration variable for the Markdown - parser; it is enabled by default for Markdown Extra. - Credits to Matt Gorle for providing the implementation. - -* Added the ability to insert custom HTML attributes with simple values - everywhere an extra attribute block is allowed (links, images, headers). - The value must be unquoted, cannot contains spaces and is limited to - alphanumeric ASCII characters. - Credits to Peter Droogmans for providing the implementation. - -* Added a `header_id_func` configuration variable which takes a function - that can generate an `id` attribute value from the header text. - Credits to Evert Pot for providing the implementation. - -* Added a `url_filter_func` configuration variable which takes a function - that can rewrite any link or image URL to something different. - - -PHP Markdown Lib 1.4.1 (4 May 2014) - -* The HTML block parser will now treat `

    ` as a block-level element - (as it should) and no longer wrap it in `

    ` or parse it's content with - the as Markdown syntax (although with Extra you can use `markdown="1"` - if you wish to use the Markdown syntax inside it). - -* The content of `