X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=library%2Fmarkdown.php;h=a8152c2ab61929b8e6b75fb45adf14ee0839991b;hb=46f5fc0a09f836b84bf97a36541a0602080c622a;hp=343153186af563e76dfd60726b986ac349b57f7e;hpb=273594af62c960b5a52da5ec1cf6d6bd450415ba;p=friendica.git
diff --git a/library/markdown.php b/library/markdown.php
index 343153186a..a8152c2ab6 100644
--- a/library/markdown.php
+++ b/library/markdown.php
@@ -1,3042 +1,24 @@
-#
-# Original Markdown
-# Copyright (c) 2004-2006 John Gruber
-#
'.$text.'
'; - $text = preg_replace('{\n{2,}}', "\n\n", $text); - } - return $text; - } - - function mdwp_strip_p($t) { return preg_replace('{?p>}i', '', $t); } - - function mdwp_hide_tags($text) { - global $mdwp_hidden_tags, $mdwp_placeholders; - return str_replace($mdwp_hidden_tags, $mdwp_placeholders, $text); - } - function mdwp_show_tags($text) { - global $mdwp_hidden_tags, $mdwp_placeholders; - return str_replace($mdwp_placeholders, $mdwp_hidden_tags, $text); - } + return $html; } - - -### bBlog Plugin Info ### - -function identify_modifier_markdown() { - return array( - 'name' => 'markdown', - 'type' => 'modifier', - 'nicename' => 'PHP Markdown Extra', - 'description' => 'A text-to-HTML conversion tool for web writers', - 'authors' => 'Michel Fortin and John Gruber', - 'licence' => 'GPL', - 'version' => MARKDOWNEXTRA_VERSION, - 'help' => 'Markdown syntax allows you to write using an easy-to-read, easy-to-write plain text format. Based on the original Perl version by John Gruber. More...', - ); -} - - -### Smarty Modifier Interface ### - -function smarty_modifier_markdown($text) { - return Markdown($text); -} - - -### Textile Compatibility Mode ### - -# Rename this file to "classTextile.php" and it can replace Textile everywhere. - -if (strcasecmp(substr(__FILE__, -16), "classTextile.php") == 0) { - # Try to include PHP SmartyPants. Should be in the same directory. - @include_once 'smartypants.php'; - # Fake Textile class. It calls Markdown instead. - class Textile { - function TextileThis($text, $lite='', $encode='') { - if ($lite == '' && $encode == '') $text = Markdown($text); - if (function_exists('SmartyPants')) $text = SmartyPants($text); - return $text; - } - # Fake restricted version: restrictions are not supported for now. - function TextileRestricted($text, $lite='', $noimage='') { - return $this->TextileThis($text, $lite); - } - # Workaround to ensure compatibility with TextPattern 4.0.3. - function blockLite($text) { return $text; } - } -} - - - -# -# Markdown Parser Class -# - -class Markdown_Parser { - - # Regex to match balanced [brackets]. - # Needed to insert a maximum bracked depth while converting to PHP. - var $nested_brackets_depth = 6; - var $nested_brackets_re; - - var $nested_url_parenthesis_depth = 4; - var $nested_url_parenthesis_re; - - # Table of hash values for escaped characters: - var $escape_chars = '\`*_{}[]()>#+-.!'; - var $escape_chars_re; - - # Change to ">" for HTML output. - var $empty_element_suffix = MARKDOWN_EMPTY_ELEMENT_SUFFIX; - var $tab_width = MARKDOWN_TAB_WIDTH; - - # Change to `true` to disallow markup or entities. - var $no_markup = false; - var $no_entities = false; - - # Predefined urls and titles for reference links and images. - var $predef_urls = array(); - var $predef_titles = array(); - - - function Markdown_Parser() { - # - # Constructor function. Initialize appropriate member variables. - # - $this->_initDetab(); - $this->prepareItalicsAndBold(); - - $this->nested_brackets_re = - str_repeat('(?>[^\[\]]+|\[', $this->nested_brackets_depth). - str_repeat('\])*', $this->nested_brackets_depth); - - $this->nested_url_parenthesis_re = - str_repeat('(?>[^()\s]+|\(', $this->nested_url_parenthesis_depth). - str_repeat('(?>\)))*', $this->nested_url_parenthesis_depth); - - $this->escape_chars_re = '['.preg_quote($this->escape_chars).']'; - - # Sort document, block, and span gamut in ascendent priority order. - asort($this->document_gamut); - asort($this->block_gamut); - asort($this->span_gamut); - } - - - # Internal hashes used during transformation. - var $urls = array(); - var $titles = array(); - var $html_hashes = array(); - - # Status flag to avoid invalid nesting. - var $in_anchor = false; - - - function setup() { - # - # Called before the transformation process starts to setup parser - # states. - # - # Clear global hashes. - $this->urls = $this->predef_urls; - $this->titles = $this->predef_titles; - $this->html_hashes = array(); - - $in_anchor = false; - } - - function teardown() { - # - # Called after the transformation process to clear any variable - # which may be taking up memory unnecessarly. - # - $this->urls = array(); - $this->titles = array(); - $this->html_hashes = array(); - } - - - function transform($text) { - # - # Main function. Performs some preprocessing on the input text - # and pass it through the document gamut. - # - $this->setup(); - - # Remove UTF-8 BOM and marker character in input, if present. - $text = preg_replace('{^\xEF\xBB\xBF|\x1A}', '', $text); - - # Standardize line endings: - # DOS to Unix and Mac to Unix - $text = preg_replace('{\r\n?}', "\n", $text); - - # Make sure $text ends with a couple of newlines: - $text .= "\n\n"; - - # Convert all tabs to spaces. - $text = $this->detab($text); - - # Turn block-level HTML blocks into hash entries - $text = $this->hashHTMLBlocks($text); - - # Strip any lines consisting only of spaces and tabs. - # This makes subsequent regexen easier to write, because we can - # match consecutive blank lines with /\n+/ instead of something - # contorted like /[ ]*\n+/ . - $text = preg_replace('/^[ ]+$/m', '', $text); - - # Run document gamut methods. - foreach ($this->document_gamut as $method => $priority) { - $text = $this->$method($text); - } - - $this->teardown(); - - return $text . "\n"; - } - - var $document_gamut = array( - # Strip link definitions, store in hashes. - "stripLinkDefinitions" => 20, - - "runBasicBlockGamut" => 30, - ); - - - function stripLinkDefinitions($text) { - # - # Strips link definitions from text, stores the URLs and titles in - # hash references. - # - $less_than_tab = $this->tab_width - 1; - - # Link defs are in the form: ^[id]: url "optional title" - $text = preg_replace_callback('{ - ^[ ]{0,'.$less_than_tab.'}\[(.+)\][ ]?: # id = $1 - [ ]* - \n? # maybe *one* newline - [ ]* - (\S+?)>? # url = $2 - [ ]* - \n? # maybe one newline - [ ]* - (?: - (?<=\s) # lookbehind for whitespace - ["(] - (.*?) # title = $3 - [")] - [ ]* - )? # title is optional - (?:\n+|\Z) - }xm', - array(&$this, '_stripLinkDefinitions_callback'), - $text); - return $text; - } - function _stripLinkDefinitions_callback($matches) { - $link_id = strtolower($matches[1]); - $this->urls[$link_id] = $matches[2]; - $this->titles[$link_id] =& $matches[3]; - return ''; # String that will replace the block - } - - - function hashHTMLBlocks($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|form|fieldset|iframe|math|textarea'; - - # Regular expression for the content of a block tag. - $nested_tags_level = 4; - $attr = ' - (?> # optional tag attributes - \s # starts with whitespace - (?> - [^>"/]+ # text outside quotes - | - /+(?!>) # slash not followed by ">" - | - "[^"]*" # text inside double quotes (tolerate ">") - | - \'[^\']*\' # text inside single quotes (tolerate ">") - )* - )? - '; - $content = - str_repeat(' - (?> - [^<]+ # content without tag - | - <\2 # nested opening tag - '.$attr.' # attributes - (?> - /> - | - >', $nested_tags_level). # end of opening tag - '.*?'. # last level nested tag content - str_repeat(' - \2\s*> # closing nested tag - ) - | - <(?!/\2\s*> # other tags with a different name - ) - )*', - $nested_tags_level); - $content2 = str_replace('\2', '\3', $content); - - # First, look for nested blocks, e.g.: - #
` blocks.
- #
- $text = preg_replace_callback('{
- (?:\n\n|\A\n?)
- ( # $1 = the code block -- one or more lines, starting with a space/tab
- (?>
- [ ]{'.$this->tab_width.'} # Lines must start with a tab or a tab-width of spaces
- .*\n+
- )+
- )
- ((?=^[ ]{0,'.$this->tab_width.'}\S)|\Z) # Lookahead for non-space at line-start, or end of doc
- }xm',
- array(&$this, '_doCodeBlocks_callback'), $text);
-
- return $text;
- }
- function _doCodeBlocks_callback($matches) {
- $codeblock = $matches[1];
-
- $codeblock = $this->outdent($codeblock);
- $codeblock = htmlspecialchars($codeblock, ENT_NOQUOTES);
-
- # trim leading newlines and trailing newlines
- $codeblock = preg_replace('/\A\n+|\n+\z/', '', $codeblock);
-
- $codeblock = "$codeblock\n
";
- return "\n\n".$this->hashBlock($codeblock)."\n\n";
- }
-
-
- function makeCodeSpan($code) {
- #
- # Create a code span markup for $code. Called from handleSpanToken.
- #
- $code = htmlspecialchars(trim($code), ENT_NOQUOTES);
- return $this->hashPart("$code
");
- }
-
-
- var $em_relist = array(
- '' => '(?:(? '(?<=\S)(? '(?<=\S)(? '(?:(? '(?<=\S)(? '(?<=\S)(? '(?:(? '(?<=\S)(? '(?<=\S)(?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"] = $token_re;
- }
- }
- }
-
- function doItalicsAndBold($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 seach 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>$span$tag>";
- $text_stack[0] = $this->hashPart($span);
- $$tag = ''; # $$tag stands for $em or $strong
- }
- $tree_char_em = false;
- } else if ($token_len == 3) {
- if ($em) {
- # Reached closing marker for both em and strong.
- # Closing strong marker:
- for ($i = 0; $i < 2; ++$i) {
- $shifted_token = array_shift($token_stack);
- $tag = strlen($shifted_token) == 2 ? "strong" : "em";
- $span = array_shift($text_stack);
- $span = $this->runSpanGamut($span);
- $span = "<$tag>$span$tag>";
- $text_stack[0] .= $this->hashPart($span);
- $$tag = ''; # $$tag stands for $em or $strong
- }
- } else {
- # Reached opening three-char emphasis marker. Push on token
- # stack; will be handled by the special condition above.
- $em = $token{0};
- $strong = "$em$em";
- array_unshift($token_stack, $token);
- array_unshift($text_stack, '');
- $tree_char_em = true;
- }
- } else if ($token_len == 2) {
- if ($strong) {
- # Unwind any dangling emphasis marker:
- if (strlen($token_stack[0]) == 1) {
- $text_stack[1] .= array_shift($token_stack);
- $text_stack[0] .= array_shift($text_stack);
- }
- # Closing strong marker:
- array_shift($token_stack);
- $span = array_shift($text_stack);
- $span = $this->runSpanGamut($span);
- $span = "$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 $text_stack[0];
- }
-
-
- function doBlockQuotes($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 $text;
- }
- function _doBlockQuotes_callback($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";
- }
- function _doBlockQuotes_callback2($matches) {
- $pre = $matches[1];
- $pre = preg_replace('/^ /m', '', $pre);
- return $pre;
- }
-
-
- function formParagraphs($text) {
- #
- # Params:
- # $text - string to process with html tags
- #
- # Strip leading and trailing lines:
- $text = preg_replace('/\A\n+|\n+\z/', '', $text);
-
- $grafs = preg_split('/\n{2,}/', $text, -1, PREG_SPLIT_NO_EMPTY);
-
- #
- # Wrap
tags and unhashify HTML blocks
- #
- foreach ($grafs as $key => $value) {
- if (!preg_match('/^B\x1A[0-9]+B$/', $value)) {
- # Is a paragraph.
- $value = $this->runSpanGamut($value);
- $value = preg_replace('/^([ ]*)/', "
", $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", $grafs);
- }
-
-
- function encodeAttribute($text) {
- #
- # Encode text for a double-quoted HTML attribute. This function
- # is *not* suitable for attributes enclosed in single quotes.
- #
- $text = $this->encodeAmpsAndAngles($text);
- $text = str_replace('"', '"', $text);
- return $text;
- }
-
-
- function encodeAmpsAndAngles($text) {
- #
- # Smart processing for ampersands and angle brackets that need to
- # be encoded. Valid character entities are left alone unless the
- # no-entities mode is set.
- #
- if ($this->no_entities) {
- $text = str_replace('&', '&', $text);
- } else {
- # Ampersand-encoding based entirely on Nat Irons's Amputator
- # MT plugin:
- $text = preg_replace('/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/',
- '&', $text);;
- }
- # Encode remaining <'s
- $text = str_replace('<', '<', $text);
-
- return $text;
- }
-
-
- function doAutoLinks($text) {
- $text = preg_replace_callback('{<((https?|ftp|dict):[^\'">\s]+)>}i',
- array(&$this, '_doAutoLinks_url_callback'), $text);
-
- # Email addresses:
- $text = preg_replace_callback('{
- <
- (?:mailto:)?
- (
- [-.\w\x80-\xFF]+
- \@
- [-a-z0-9\x80-\xFF]+(\.[-a-z0-9\x80-\xFF]+)*\.[a-z]+
- )
- >
- }xi',
- array(&$this, '_doAutoLinks_email_callback'), $text);
-
- return $text;
- }
- function _doAutoLinks_url_callback($matches) {
- $url = $this->encodeAttribute($matches[1]);
- $link = "$url";
- return $this->hashPart($link);
- }
- function _doAutoLinks_email_callback($matches) {
- $address = $matches[1];
- $link = $this->encodeEmailAddress($address);
- return $this->hashPart($link);
- }
-
-
- function encodeEmailAddress($addr) {
- #
- # Input: an email address, e.g. "foo@example.com"
- #
- # Output: the email address as a mailto link, with each character
- # of the address encoded as either a decimal or hex entity, in
- # the hopes of foiling most address harvesting spam bots. E.g.:
- #
- #
- #
- # Based by a filter by Matthew Wickline, posted to BBEdit-Talk.
- # With some optimizations by Milian Wolff.
- #
- $addr = "mailto:" . $addr;
- $chars = preg_split('/(? $char) {
- $ord = ord($char);
- # Ignore non-ascii chars.
- if ($ord < 128) {
- $r = ($seed * (1 + $key)) % 100; # Pseudo-random function.
- # roughly 10% raw, 45% hex, 45% dec
- # '@' *must* be encoded. I insist.
- if ($r > 90 && $char != '@') /* do nothing */;
- else if ($r < 45) $chars[$key] = ''.dechex($ord).';';
- else $chars[$key] = ''.$ord.';';
- }
- }
-
- $addr = implode('', $chars);
- $text = implode('', array_slice($chars, 7)); # text without `mailto:`
- $addr = "$text";
-
- return $addr;
- }
-
-
- function parseSpan($str) {
- #
- # Take the string $str and parse it into tokens, hashing embeded HTML,
- # escaped characters and handling code spans.
- #
- $output = '';
-
- $span_re = '{
- (
- \\\\'.$this->escape_chars_re.'
- |
- (?no_markup ? '' : '
- |
- # comment
- |
- <\?.*?\?> | <%.*?%> # processing instruction
- |
- <[/!$]?[-a-zA-Z0-9:_]+ # regular tags
- (?>
- \s
- (?>[^"\'>]+|"[^"]*"|\'[^\']*\')*
- )?
- >
- ').'
- )
- }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 $output;
- }
-
-
- function handleSpanToken($token, &$str) {
- #
- # Handle $token provided by parseSpan by determining its nature and
- # returning the corresponding value that should replace it.
- #
- switch ($token{0}) {
- case "\\":
- return $this->hashPart("". ord($token{1}). ";");
- case "`":
- # Search for end marker in remaining text.
- if (preg_match('/^(.*?[^`])'.preg_quote($token).'(?!`)(.*)$/sm',
- $str, $matches))
- {
- $str = $matches[2];
- $codespan = $this->makeCodeSpan($matches[1]);
- return $this->hashPart($codespan);
- }
- return $token; // return as text since no ending marker found.
- default:
- return $this->hashPart($token);
- }
- }
-
-
- function outdent($text) {
- #
- # Remove one level of line-leading tabs or spaces
- #
- return preg_replace('/^(\t|[ ]{1,'.$this->tab_width.'})/m', '', $text);
- }
-
-
- # String length function for detab. `_initDetab` will create a function to
- # hanlde UTF-8 if the default function does not exist.
- var $utf8_strlen = 'mb_strlen';
-
- function detab($text) {
- #
- # Replace tabs with the appropriate amount of space.
- #
- # For each line we separate the line in blocks delemited by
- # tab characters. Then we reconstruct every line by adding the
- # appropriate number of space between each blocks.
-
- $text = preg_replace_callback('/^.*\t.*$/m',
- array(&$this, '_detab_callback'), $text);
-
- return $text;
- }
- function _detab_callback($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 $line;
- }
- function _initDetab() {
- #
- # Check for the availability of the function in the `utf8_strlen` property
- # (initially `mb_strlen`). If the function is not available, create a
- # function that will loosely count the number of UTF-8 characters with a
- # regular expression.
- #
- if (function_exists($this->utf8_strlen)) return;
- $this->utf8_strlen = create_function('$text', 'return preg_match_all(
- "/[\\\\x00-\\\\xBF]|[\\\\xC0-\\\\xFF][\\\\x80-\\\\xBF]*/",
- $text, $m);');
- }
-
-
- function unhash($text) {
- #
- # Swap back in all the tags hashed by _HashHTMLBlocks.
- #
- return preg_replace_callback('/(.)\x1A[0-9]+\1/',
- array(&$this, '_unhash_callback'), $text);
- }
- function _unhash_callback($matches) {
- return $this->html_hashes[$matches[0]];
- }
-
-}
-
-
-#
-# Markdown Extra Parser Class
-#
-
-class MarkdownExtra_Parser extends Markdown_Parser {
-
- # Prefix for footnote ids.
- var $fn_id_prefix = "";
-
- # Optional title attribute for footnote links and backlinks.
- var $fn_link_title = MARKDOWN_FN_LINK_TITLE;
- var $fn_backlink_title = MARKDOWN_FN_BACKLINK_TITLE;
-
- # Optional class attribute for footnote links and backlinks.
- var $fn_link_class = MARKDOWN_FN_LINK_CLASS;
- var $fn_backlink_class = MARKDOWN_FN_BACKLINK_CLASS;
-
- var $el_enable = MARKDOWN_EL_ENABLE;
- var $el_local_domain = MARKDOWN_EL_LOCAL_DOMAIN;
- var $el_new_window = MARKDOWN_EL_NEW_WINDOW;
- var $el_css_class = MARKDOWN_EL_CSS_CLASS;
-
- var $ha_enable = MARKDOWN_HA_ENABLE;
- var $ha_class = MARKDOWN_HA_CLASS;
- var $ha_text = MARKDOWN_HA_TEXT;
-
- # Predefined abbreviations.
- var $predef_abbr = array();
-
-
- function MarkdownExtra_Parser() {
- #
- # Constructor function. Initialize the parser object.
- #
- # Add extra escapable characters before parent constructor
- # initialize the table.
- $this->escape_chars .= ':|';
-
- if ($this->el_local_domain === null) {
- $this->el_local_domain = $_SERVER['SERVER_NAME'];
- }
-
- # Insert extra document, block, and span transformations.
- # Parent constructor will do the sorting.
- $this->document_gamut += array(
- "doFencedCodeBlocks" => 5,
- "stripFootnotes" => 15,
- "stripAbbreviations" => 25,
- "appendFootnotes" => 50,
- );
- $this->block_gamut += array(
- "doFencedCodeBlocks" => 5,
- "doTables" => 15,
- "doDefLists" => 45,
- );
- $this->span_gamut += array(
- "doFootnotes" => 5,
- "doAbbreviations" => 70,
- );
-
- parent::Markdown_Parser();
- }
-
-
- # Extra variables used during extra transformations.
- var $footnotes = array();
- var $footnotes_ordered = array();
- var $abbr_desciptions = array();
- var $abbr_word_re = '';
-
- # Give the current footnote number.
- var $footnote_counter = 1;
-
-
- function setup() {
- #
- # Setting up Extra-specific variables.
- #
- parent::setup();
-
- $this->footnotes = array();
- $this->footnotes_ordered = 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);
- }
- }
-
- function teardown() {
- #
- # Clearing Extra-specific variables.
- #
- $this->footnotes = array();
- $this->footnotes_ordered = array();
- $this->abbr_desciptions = array();
- $this->abbr_word_re = '';
-
- parent::teardown();
- }
-
-
- ### HTML Block Parser ###
-
- # Tags that are always treated as block tags:
- var $block_tags_re = 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|address|form|fieldset|iframe|hr|legend';
-
- # Tags treated as block tags only if the opening tag is alone on it's line:
- var $context_block_tags_re = 'script|noscript|math|ins|del';
-
- # Tags where markdown="1" default to span mode:
- var $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 $clean_tags_re = 'script|math';
-
- # Tags that do not need to be closed.
- var $auto_close_tags_re = 'hr|img';
-
-
- function hashHTMLBlocks($text) {
- #
- # Hashify HTML Blocks and "clean tags".
- #
- # We only want to do this for block-level HTML tags, such as headers,
- # lists, and tables. That's because we still want to wrap 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 whitin 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!
- #
- #
- # Call the HTML-in-Markdown hasher.
- #
- list($text, ) = $this->_hashHTMLBlocks_inMarkdown($text);
-
- return $text;
- }
- function _hashHTMLBlocks_inMarkdown($text, $indent = 0,
- $enclosing_tag_re = '', $span = false)
- {
- #
- # Parse markdown text, calling _HashHTMLBlocks_InHTML for block tags.
- #
- # * $indent is the number of space to be ignored when checking for code
- # blocks. This is important because if we don't take the indent into
- # account, something like this (which looks right) won't work as expected:
- #
- #
- #
- # 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 $span is true, text inside must treated as span. So any double
- # newline will be replaced by a single newline so that it does not create
- # paragraphs.
- #
- # Returns an array of that form: ( processed text , remaining text )
- #
- if ($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 =
- '{
- ( # $2: Capture hole tag.
- ? # Any opening or closing tag.
- (?> # Tag name.
- '.$this->block_tags_re.' |
- '.$this->context_block_tags_re.' |
- '.$this->clean_tags_re.' |
- (?!\s)'.$enclosing_tag_re.'
- )
- (?:
- (?=[\s"\'/a-zA-Z0-9]) # Allowed characters after tag name.
- (?>
- ".*?" | # Double quotes (can contain `>`)
- \'.*?\' | # Single quotes (can contain `>`)
- .+? # Anything but quotes and `>`.
- )*?
- )?
- > # End of tag.
- |
- # HTML Comment
- |
- <\?.*?\?> | <%.*?%> # Processing instruction
- |
- # CData Block
- |
- # Code span marker
- `+
- '. ( !$span ? ' # If not in span.
- |
- # Indented code block
- (?> ^[ ]*\n? | \n[ ]*\n )
- [ ]{'.($indent+4).'}[^\n]* \n
- (?>
- (?: [ ]{'.($indent+4).'}[^\n]* | [ ]* ) \n
- )*
- |
- # Fenced code block marker
- (?> ^ | \n )
- [ ]{'.($indent).'}~~~+[ ]*\n
- ' : '' ). ' # End (if not is span).
- )
- }xs';
-
-
- $depth = 0; # Current depth inside the tag tree.
- $parsed = ""; # Parsed text that will be returned.
-
- #
- # Loop through every tag until we find the closing tag of the parent
- # or loop until reaching the end of text if no parent tag specified.
- #
- do {
- #
- # Split the text using the first $tag_match pattern found.
- # Text before pattern will be first in the array, text after
- # pattern will be at the end, and between will be any catches made
- # by the pattern.
- #
- $parts = preg_split($block_tag_re, $text, 2,
- PREG_SPLIT_DELIM_CAPTURE);
-
- # If in Markdown span mode, add a empty-string span-level hash
- # after each newline to prevent triggering any block element.
- if ($span) {
- $void = $this->hashPart("", ':');
- $newline = "$void\n";
- $parts[0] = $void . str_replace("\n", $newline, $parts[0]) . $void;
- }
-
- $parsed .= $parts[0]; # Text before current tag.
-
- # If end of $text has been reached. Stop loop.
- if (count($parts) < 3) {
- $text = "";
- break;
- }
-
- $tag = $parts[1]; # Tag to handle.
- $text = $parts[2]; # Remaining text after current tag.
- $tag_re = preg_quote($tag); # For use in a regular expression.
-
- #
- # Check for: Code span marker
- #
- if ($tag{0} == "`") {
- # Find corresponding end marker.
- $tag_re = preg_quote($tag);
- if (preg_match('{^(?>.+?|\n(?!\n))*?(?.*\n)+?'.$tag_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 .= $tag;
- }
- }
- }
- #
- # Check for: Opening Block level tag or
- # Opening Context Block tag (like ins and del)
- # used as a block tag (tag is alone on it's line).
- #
- else if (preg_match('{^<(?:'.$this->block_tags_re.')\b}', $tag) ||
- ( preg_match('{^<(?:'.$this->context_block_tags_re.')\b}', $tag) &&
- preg_match($newline_before_re, $parsed) &&
- preg_match($newline_after_re, $text) )
- )
- {
- # Need to parse tag and following text using the HTML parser.
- list($block_text, $text) =
- $this->_hashHTMLBlocks_inHTML($tag . $text, "hashBlock", true);
-
- # Make sure it stays outside of any paragraph by adding newlines.
- $parsed .= "\n\n$block_text\n\n";
- }
- #
- # Check for: Clean tag (like script, math)
- # HTML Comments, processing instructions.
- #
- else if (preg_match('{^<(?:'.$this->clean_tags_re.')\b}', $tag) ||
- $tag{1} == '!' || $tag{1} == '?')
- {
- # Need to parse tag and following text using the HTML parser.
- # (don't check for markdown attribute)
- list($block_text, $text) =
- $this->_hashHTMLBlocks_inHTML($tag . $text, "hashClean", false);
-
- $parsed .= $block_text;
- }
- #
- # Check for: Tag with same name as enclosing tag.
- #
- else if ($enclosing_tag_re !== '' &&
- # Same name as enclosing tag.
- preg_match('{^?(?:'.$enclosing_tag_re.')\b}', $tag))
- {
- #
- # Increase/decrease nested tag count.
- #
- if ($tag{1} == '/') $depth--;
- else if ($tag{strlen($tag)-2} != '/') $depth++;
-
- if ($depth < 0) {
- #
- # Going out of parent element. Clean up and break so we
- # return to the calling function.
- #
- $text = $tag . $text;
- break;
- }
-
- $parsed .= $tag;
- }
- else {
- $parsed .= $tag;
- }
- } while ($depth >= 0);
-
- return array($parsed, $text);
- }
- function _hashHTMLBlocks_inHTML($text, $hash_method, $md_attr) {
- #
- # Parse HTML, calling _HashHTMLBlocks_InMarkdown for block tags.
- #
- # * Calls $hash_method to convert any blocks.
- # * Stops when the first opening tag closes.
- # * $md_attr indicate if the use of the `markdown="1"` attribute is allowed.
- # (it is not inside clean tags)
- #
- # Returns an array of that form: ( processed text , remaining text )
- #
- if ($text === '') return array('', '');
-
- # Regex to match `markdown` attribute inside of a tag.
- $markdown_attr_re = '
- {
- \s* # Eat whitespace before the `markdown` attribute
- markdown
- \s*=\s*
- (?>
- (["\']) # $1: quote delimiter
- (.*?) # $2: attribute value
- \1 # matching delimiter
- |
- ([^\s>]*) # $3: unquoted attribute value
- )
- () # $4: make $3 always defined (avoid warnings)
- }xs';
-
- # Regex to match any tag.
- $tag_re = '{
- ( # $2: Capture hole tag.
- ? # Any opening or closing tag.
- [\w:$]+ # Tag name.
- (?:
- (?=[\s"\'/a-zA-Z0-9]) # Allowed characters after tag name.
- (?>
- ".*?" | # Double quotes (can contain `>`)
- \'.*?\' | # Single quotes (can contain `>`)
- .+? # Anything but quotes and `>`.
- )*?
- )?
- > # End of tag.
- |
- # HTML Comment
- |
- <\?.*?\?> | <%.*?%> # Processing instruction
- |
- # CData 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 = $parts[2]; # Remaining text after current tag.
-
- #
- # Check for: Auto-close tag (like
)
- # Comments and Processing Instructions.
- #
- if (preg_match('{^?(?:'.$this->auto_close_tags_re.')\b}', $tag) ||
- $tag{1} == '!' || $tag{1} == '?')
- {
- # Just add the tag to the block as if it was text.
- $block_text .= $tag;
- }
- else {
- #
- # Increase/decrease nested tag count. Only do so if
- # the tag's name match base tag's.
- #
- if (preg_match('{^?'.$base_tag_name_re.'\b}', $tag)) {
- if ($tag{1} == '/') $depth--;
- else if ($tag{strlen($tag)-2} != '/') $depth++;
- }
-
- #
- # Check for `markdown="1"` attribute and handle it.
- #
- if ($md_attr &&
- preg_match($markdown_attr_re, $tag, $attr_m) &&
- preg_match('/^1|block|span$/', $attr_m[2] . $attr_m[3]))
- {
- # Remove `markdown` attribute from opening tag.
- $tag = preg_replace($markdown_attr_re, '', $tag);
-
- # Check if text inside this tag must be parsed in span mode.
- $this->mode = $attr_m[2] . $attr_m[3];
- $span_mode = $this->mode == 'span' || $this->mode != 'block' &&
- preg_match('{^<(?:'.$this->contain_span_tags_re.')\b}', $tag);
-
- # Calculate indent before tag.
- if (preg_match('/(?:^|\n)( *?)(?! ).*?$/', $block_text, $matches)) {
- $strlen = $this->utf8_strlen;
- $indent = $strlen($matches[1], 'UTF-8');
- } else {
- $indent = 0;
- }
-
- # End preceding block with this tag.
- $block_text .= $tag;
- $parsed .= $this->$hash_method($block_text);
-
- # Get enclosing tag name for the ParseMarkdown function.
- # (This pattern makes $tag_name_re safe without quoting.)
- preg_match('/^<([\w:$]*)\b/', $tag, $matches);
- $tag_name_re = $matches[1];
-
- # Parse the content using the HTML-in-Markdown parser.
- list ($block_text, $text)
- = $this->_hashHTMLBlocks_inMarkdown($text, $indent,
- $tag_name_re, $span_mode);
-
- # Outdent markdown text.
- if ($indent > 0) {
- $block_text = preg_replace("/^[ ]{1,$indent}/m", "",
- $block_text);
- }
-
- # Append tag content to parsed text.
- if (!$span_mode) $parsed .= "\n\n$block_text\n\n";
- else $parsed .= "$block_text";
-
- # Start over 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, $text);
- }
-
-
- function hashClean($text) {
- #
- # Called whenever a tag must be hashed when a function insert a "clean" tag
- # in $text, it pass through this function and is automaticaly escaped,
- # blocking invalid nested overlap.
- #
- return $this->hashPart($text, 'C');
- }
-
- 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];
-
- $url = $this->encodeAttribute($url);
-
- $result = "encodeAttribute($title);
- $result .= " title=\"$title\"";
- }
-
- if ($this->el_enable && preg_match('/^https?\:\/\//', $url) && !preg_match('/^https?\:\/\/'.$this->el_local_domain.'/', $url)) {
- if ($this->el_new_window) {
- $result .= ' target="_blank"';
- }
-
- if ($this->el_css_class) {
- $result .= ' class="'.$this->el_css_class.'"';
- }
- }
-
- $link_text = $this->runSpanGamut($link_text);
- $result .= ">$link_text";
-
- return $this->hashPart($result);
- }
-
- function _doAnchors_reference_callback($matches) {
- $whole_match = $matches[1];
- $link_text = $matches[2];
- $link_id =& $matches[3];
- $result = '';
-
- if ($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 = $this->encodeAttribute($url);
-
- $result = "titles[$link_id] ) ) {
- $title = $this->titles[$link_id];
- $title = $this->encodeAttribute($title);
- $result .= " title=\"$title\"";
- }
-
- if ($this->el_enable && preg_match('/^https?\:\/\//', $url) && !preg_match('/^https?\:\/\/'.$this->el_local_domain.'/', $url)) {
- if ($this->el_new_window) {
- $result .= ' target="_blank"';
- }
-
- if ($this->el_css_class) {
- $result .= ' class="'.$this->el_css_class.'"';
- }
- }
-
- $link_text = $this->runSpanGamut($link_text);
- $result .= ">$link_text";
- $result = $this->hashPart($result);
- }
- else {
- $result = $whole_match;
- }
- return $result;
- }
-
- function doHeaders($text) {
- #
- # Redefined to add id attribute support.
- #
- # Setext-style headers:
- # Header 1 {#header1}
- # ========
- #
- # Header 2 {#header2}
- # --------
- #
- $text = preg_replace_callback(
- '{
- (^.+?) # $1: Header text
- (?:[ ]+\{\#([-_:a-zA-Z0-9]+)\})? # $2: Id attribute
- [ ]*\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}
- # ...
- # ###### Header 6 {#header2}
- #
- $text = preg_replace_callback('{
- ^(\#{1,6}) # $1 = string of #\'s
- [ ]*
- (.+?) # $2 = Header text
- [ ]*
- \#* # optional closing #\'s (not counted)
- (?:[ ]+\{\#([-_:a-zA-Z0-9]+)\})? # id attribute
- [ ]*
- \n+
- }xm',
- array(&$this, '_doHeaders_callback_atx'), $text);
-
- return $text;
- }
- function _doHeaders_attr($attr) {
- if (empty($attr)) return "";
- return " id=\"$attr\"";
- }
- function _doHeaders_callback_setext($matches) {
- if ($matches[3] == '-' && preg_match('{^- }', $matches[1]))
- return $matches[0];
- $level = $matches[3]{0} == '=' ? 1 : 2;
- $attr = $this->_doHeaders_attr($id =& $matches[2]);
- $body = $this->runSpanGamut($matches[1]);
- $body = $this->_doHeaders_selflink($id, $body);
-
- $block = "$body ";
- return "\n" . $this->hashBlock($block) . "\n\n";
- }
- function _doHeaders_callback_atx($matches) {
- $level = strlen($matches[1]);
- $attr = $this->_doHeaders_attr($id =& $matches[3]);
- $body = $this->runSpanGamut($matches[2]);
- $body = $this->_doHeaders_selflink($id, $body);
-
- $block = "$body ";
- return "\n" . $this->hashBlock($block) . "\n\n";
- }
- function _doHeaders_selflink($id, $body) {
- if (!empty($id)) {
- $link = 'ha_class) {
- $link .= ' class="'.$this->ha_class.'"';
- }
-
- $link .= '>'.$this->ha_text.'';
-
- $body .= $link;
- }
-
- return $body;
- }
-
-
- function doTables($text) {
- #
- # Form HTML tables.
- #
- $less_than_tab = $this->tab_width - 1;
- #
- # Find tables with leading pipe.
- #
- # | Header 1 | Header 2
- # | -------- | --------
- # | Cell 1 | Cell 2
- # | Cell 3 | Cell 4
- #
- $text = preg_replace_callback('
- {
- ^ # Start of a line
- [ ]{0,'.$less_than_tab.'} # Allowed whitespace.
- [|] # Optional leading pipe (present)
- (.+) \n # $1: Header row (at least one pipe)
-
- [ ]{0,'.$less_than_tab.'} # Allowed whitespace.
- [|] ([ ]*[-:]+[-| :]*) \n # $2: Header underline
-
- ( # $3: Cells
- (?>
- [ ]* # Allowed whitespace.
- [|] .* \n # Row content.
- )*
- )
- (?=\n|\Z) # Stop at final double newline.
- }xm',
- array(&$this, '_doTable_leadingPipe_callback'), $text);
-
- #
- # Find tables without leading pipe.
- #
- # Header 1 | Header 2
- # -------- | --------
- # Cell 1 | Cell 2
- # Cell 3 | Cell 4
- #
- $text = preg_replace_callback('
- {
- ^ # Start of a line
- [ ]{0,'.$less_than_tab.'} # Allowed whitespace.
- (\S.*[|].*) \n # $1: Header row (at least one pipe)
-
- [ ]{0,'.$less_than_tab.'} # Allowed whitespace.
- ([-:]+[ ]*[|][-| :]*) \n # $2: Header underline
-
- ( # $3: Cells
- (?>
- .* [|] .* \n # Row content
- )*
- )
- (?=\n|\Z) # Stop at final double newline.
- }xm',
- array(&$this, '_DoTable_callback'), $text);
-
- return $text;
- }
- function _doTable_leadingPipe_callback($matches) {
- $head = $matches[1];
- $underline = $matches[2];
- $content = $matches[3];
-
- # Remove leading pipe for each row.
- $content = preg_replace('/^ *[|]/m', '', $content);
-
- return $this->_doTable_callback(array($matches[0], $head, $underline, $content));
- }
- function _doTable_callback($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] = ' align="right"';
- else if (preg_match('/^ *:-+: *$/', $s))$attr[$n] = ' align="center"';
- else if (preg_match('/^ *:-+ *$/', $s)) $attr[$n] = ' align="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);
-
- # 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";
- }
-
-
- function doDefLists($text) {
- #
- # Form HTML definition lists.
- #
- $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 $text;
- }
- function _doDefLists_callback($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";
- }
-
-
- function processDefListItems($list_str) {
- #
- # Process the contents of a single definition list, splitting it
- # into individual term and definition list items.
- #
- $less_than_tab = $this->tab_width - 1;
-
- # trim trailing blank lines:
- $list_str = preg_replace("/\n{2,}\\z/", "\n", $list_str);
-
- # Process definition terms.
- $list_str = preg_replace_callback('{
- (?>\A\n?|\n\n+) # leading line
- ( # definition terms = $1
- [ ]{0,'.$less_than_tab.'} # leading whitespace
- (?![:][ ]|[ ]) # negative lookahead for a definition
- # mark (colon) or more whitespace.
- (?> \S.* \n)+? # actual term (not whitespace).
- )
- (?=\n?[ ]{0,3}:[ ]) # lookahead for following line feed
- # with a definition mark.
- }xm',
- array(&$this, '_processDefListItems_callback_dt'), $list_str);
-
- # Process actual definitions.
- $list_str = preg_replace_callback('{
- \n(\n+)? # leading line = $1
- ( # marker space = $2
- [ ]{0,'.$less_than_tab.'} # whitespace before colon
- [:][ ]+ # definition mark (colon)
- )
- ((?s:.+?)) # definition text = $3
- (?= \n+ # stop at next definition mark,
- (?: # next term or end of text
- [ ]{0,'.$less_than_tab.'} [:][ ] |
- 0) {
- $term = preg_replace($anchor_regexp, '', $term);
- $id = ' id="'.trim($id[1]).'"';
- }
-
- if (count($id) === 0) {
- $id = '';
- }
-
- $term = $this->runSpanGamut(trim($term));
- $text .= "\n" . $term . " ";
- }
- return $text . "\n";
- }
- function _processDefListItems_callback_dd($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 " . $def . " \n";
- }
-
-
- function doFencedCodeBlocks($text) {
- #
- # Adding the fenced code block syntax to regular Markdown:
- #
- # ~~~
- # Code block
- # ~~~
- #
- $less_than_tab = $this->tab_width;
-
- $text = preg_replace_callback('{
- (?:\n|\A)
- # 1: Opening marker
- (
- ~{3,} # Marker: three tilde or more.
- )
- [ ]* \n # Whitespace and newline following marker.
-
- # 2: Content
- (
- (?>
- (?!\1 [ ]* \n) # Not a closing marker.
- .*\n+
- )+
- )
-
- # Closing marker.
- \1 [ ]* \n
- }xm',
- array(&$this, '_doFencedCodeBlocks_callback'), $text);
-
- return $text;
- }
- function _doFencedCodeBlocks_callback($matches) {
- $codeblock = $matches[2];
- $codeblock = htmlspecialchars($codeblock, ENT_NOQUOTES);
- $codeblock = preg_replace_callback('/^\n+/',
- array(&$this, '_doFencedCodeBlocks_newlines'), $codeblock);
- $codeblock = "$codeblock
";
- return "\n\n".$this->hashBlock($codeblock)."\n\n";
- }
- 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 $em_relist = array(
- '' => '(?:(? '(?<=\S)(? '(?<=\S)(? '(?:(? '(?<=\S)(? '(?<=\S)(? '(?:(? '(?<=\S)(? '(?<=\S)(? tags
- #
- # Strip leading and trailing lines:
- $text = preg_replace('/\A\n+|\n+\z/', '', $text);
-
- $grafs = preg_split('/\n{2,}/', $text, -1, PREG_SPLIT_NO_EMPTY);
-
- #
- # Wrap tags and unhashify HTML blocks
- #
- foreach ($grafs as $key => $value) {
- $value = trim($this->runSpanGamut($value));
-
- # Check if this should be enclosed in a paragraph.
- # Clean tag hashes & block tag hashes are left alone.
- $is_p = !preg_match('/^B\x1A[0-9]+B|^C\x1A[0-9]+C$/', $value);
-
- if ($is_p) {
- $value = "
$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 $text;
- }
-
-
- ### Footnotes
-
- function stripFootnotes($text) {
- #
- # Strips link definitions from text, stores the URLs and titles in
- # hash references.
- #
- $less_than_tab = $this->tab_width - 1;
-
- # Link defs are in the form: [^id]: url "optional title"
- $text = preg_replace_callback('{
- ^[ ]{0,'.$less_than_tab.'}\[\^(.+?)\][ ]?: # note_id = $1
- [ ]*
- \n? # maybe *one* newline
- ( # text = $2 (no blank lines allowed)
- (?:
- .+ # actual text
- |
- \n # newlines but
- (?!\[\^.+?\]:\s)# negative lookahead for footnote marker.
- (?!\n+[ ]{0,3}\S)# ensure line is not blank and followed
- # by non-indented content
- )*
- )
- }xm',
- array(&$this, '_stripFootnotes_callback'),
- $text);
- return $text;
- }
- function _stripFootnotes_callback($matches) {
- $note_id = $this->fn_id_prefix . $matches[1];
- $this->footnotes[$note_id] = $this->outdent($matches[2]);
- return ''; # String that will replace the block
- }
-
-
- function doFootnotes($text) {
- #
- # Replace footnote references in $text [^id] with a special text-token
- # which will be replaced by the actual footnote marker in appendFootnotes.
- #
- if (!$this->in_anchor) {
- $text = preg_replace('{\[\^(.+?)\]}', "F\x1Afn:\\1\x1A:", $text);
- }
- return $text;
- }
-
-
- function appendFootnotes($text) {
- #
- # Append footnote list to text.
- #
- $text = preg_replace_callback('{F\x1Afn:(.*?)\x1A:}',
- array(&$this, '_appendFootnotes_callback'), $text);
-
- if (!empty($this->footnotes_ordered)) {
- $text .= "\n\n";
- $text .= "\n";
- $text .= "
fn_backlink_class != "") {
- $class = $this->fn_backlink_class;
- $class = $this->encodeAttribute($class);
- $attr .= " class=\"$class\"";
- }
- if ($this->fn_backlink_title != "") {
- $title = $this->fn_backlink_title;
- $title = $this->encodeAttribute($title);
- $attr .= " title=\"$title\"";
- }
- $num = 0;
-
- while (!empty($this->footnotes_ordered)) {
- $footnote = reset($this->footnotes_ordered);
- $note_id = key($this->footnotes_ordered);
- unset($this->footnotes_ordered[$note_id]);
-
- $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);
-
- # Add backlink to last paragraph; create new paragraph if needed.
- $backlink = "↩";
- if (preg_match('{$}', $footnote)) {
- $footnote = substr($footnote, 0, -4) . " $backlink";
- } else {
- $footnote .= "\n\n$backlink
";
- }
-
- $text .= "\n";
- $text .= $footnote . "\n";
- $text .= " \n\n";
- }
-
- $text .= "\n";
- $text .= "";
- }
- return $text;
- }
- function _appendFootnotes_callback($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])) {
- # Transfert footnote content to the ordered list.
- $this->footnotes_ordered[$node_id] = $this->footnotes[$node_id];
- unset($this->footnotes[$node_id]);
-
- $num = $this->footnote_counter++;
- $attr = " rel=\"footnote\"";
- if ($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 ###
-
- function stripAbbreviations($text) {
- #
- # Strips abbreviations from text, stores titles in hash references.
- #
- $less_than_tab = $this->tab_width - 1;
-
- # Link defs are in the form: [id]*: url "optional title"
- $text = preg_replace_callback('{
- ^[ ]{0,'.$less_than_tab.'}\*\[(.+?)\][ ]?: # abbr_id = $1
- (.*) # text = $2 (no blank lines allowed)
- }xm',
- array(&$this, '_stripAbbreviations_callback'),
- $text);
- return $text;
- }
- function _stripAbbreviations_callback($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($abbr_desc);
- return ''; # String that will replace the block
- }
-
-
- function doAbbreviations($text) {
- #
- # Find defined abbreviations in text and wrap them in elements.
- #
- 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 $text;
- }
- function _doAbbreviations_callback($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];
- }
- }
-
-}
-
-
-/*
-
-PHP Markdown Extra
-==================
-
-Description
------------
-
-This is a PHP port of the original Markdown formatter written in Perl
-by John Gruber. This special "Extra" version of PHP Markdown features
-further enhancements to the syntax for making additional constructs
-such as tables and definition list.
-
-Markdown is a text-to-HTML filter; it translates an easy-to-read /
-easy-to-write structured text format into HTML. Markdown's text format
-is most similar to that of plain text email, and supports features such
-as headers, *emphasis*, code blocks, blockquotes, and links.
-
-Markdown's syntax is designed not as a generic markup language, but
-specifically to serve as a front-end to (X)HTML. You can use span-level
-HTML tags anywhere in a Markdown document, and you can use block level
-HTML tags (like and as well).
-
-For more information about Markdown's syntax, see:
-
-
-
-
-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 Markdown actually produced.
-
-
-Version History
----------------
-
-See the readme file for detailed release notes for this version.
-
-
-Copyright and License
----------------------
-
-PHP Markdown & Extra
-Copyright (c) 2004-2008 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.
-
-*/
?>