Updating Markdown to 1.0.1 - http://mosquito.wordpress.org/view.php?id=730
git-svn-id: http://svn.automattic.com/wordpress/trunk@2128 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
saxmatt
parent
804f3227da
commit
9ddeb1b1a3
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@ -6,22 +6,19 @@
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# Copyright (c) 2004 John Gruber
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# <http://daringfireball.net/projects/markdown/>
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#
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# Copyright (c) 2004 Michel Fortin - Translation to PHP
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# Copyright (c) 2004 Michel Fortin - PHP Port
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# <http://www.michelf.com/projects/php-markdown/>
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#
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# This version has been modified for inclusion in WordPress
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# For the original please see Michel's site
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global $MarkdownPHPVersion, $MarkdownSyntaxVersion,
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$md_empty_element_suffix, $md_tab_width,
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$md_nested_brackets_depth, $md_nested_brackets,
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$md_escape_table, $md_backslash_escape_table;
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$md_escape_table, $md_backslash_escape_table,
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$md_list_level;
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$MarkdownPHPVersion = '1.0'; # Sat 21 Aug 2004
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$MarkdownSyntaxVersion = '1.0'; # Fri 20 Aug 2004
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$MarkdownPHPVersion = '1.0.1'; # Fri 17 Dec 2004
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$MarkdownSyntaxVersion = '1.0.1'; # Sun 12 Dec 2004
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#
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@ -34,9 +31,9 @@ $md_tab_width = 4;
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# -- WordPress Plugin Interface -----------------------------------------------
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/*
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Plugin Name: Markdown
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Plugin URI: http://codex.wordpress.org/Plugin:Markdown
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Plugin URI: http://www.michelf.com/projects/php-markdown/
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Description: <a href="http://daringfireball.net/projects/markdown/syntax">Markdown syntax</a> allows you to write using an easy-to-read, easy-to-write plain text format. Based on the original Perl version by <a href="http://daringfireball.net/">John Gruber</a>. <a href="http://www.michelf.com/projects/php-markdown/">More...</a>
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Version: 1.0
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Version: 1.0.1
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Author: Michel Fortin
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Author URI: http://www.michelf.com/
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*/
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@ -51,15 +48,56 @@ if (isset($wp_version)) {
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add_filter('comment_text', 'Markdown', 6);
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}
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# -- bBlog Plugin Info --------------------------------------------------------
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function identify_modifier_markdown() {
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global $MarkdownPHPVersion;
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return array(
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'name' => 'markdown',
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'type' => 'modifier',
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'nicename' => 'Markdown',
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'description' => 'A text-to-HTML conversion tool for web writers',
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'authors' => 'Michel Fortin and John Gruber',
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'licence' => 'GPL',
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'version' => $MarkdownPHPVersion,
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'help' => '<a href="http://daringfireball.net/projects/markdown/syntax">Markdown syntax</a> allows you to write using an easy-to-read, easy-to-write plain text format. Based on the original Perl version by <a href="http://daringfireball.net/">John Gruber</a>. <a href="http://www.michelf.com/projects/php-markdown/">More...</a>'
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);
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}
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# -- Smarty Modifier Interface ------------------------------------------------
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function smarty_modifier_markdown($text) {
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return Markdown($text);
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}
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# -- Textile Compatibility Mode -----------------------------------------------
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# Rename this file to "classTextile.php" and it can replace Textile anywhere.
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if (strcasecmp(substr(__FILE__, -16), "classTextile.php") == 0) {
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# Try to include PHP SmartyPants. Should be in the same directory.
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@include_once 'smartypants.php';
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# Fake Textile class. It calls Markdown instead.
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class Textile {
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function TextileThis($text, $lite='', $encode='', $noimage='', $strict='') {
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if ($lite == '' && $encode == '') $text = Markdown($text);
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if (function_exists('SmartyPants')) $text = SmartyPants($text);
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return $text;
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}
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}
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}
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#
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# Globals:
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#
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# Regex to match balanced [brackets].
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# Needed to insert a maximum bracked depth while converting to PHP.
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$md_nested_brackets_depth = 6;
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$md_nested_brackets =
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str_repeat('(?>[^\[\]]+|\[', $md_nested_brackets_depth).
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str_repeat('\])*', $md_nested_brackets_depth);
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# Table of hash values for escaped characters:
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$md_escape_table = array(
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"\\" => md5("\\"),
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"`" => md5("`"),
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@ -71,7 +109,10 @@ $md_escape_table = array(
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"]" => md5("]"),
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"(" => md5("("),
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")" => md5(")"),
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">" => md5(">"),
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"#" => md5("#"),
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"+" => md5("+"),
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"-" => md5("-"),
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"." => md5("."),
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"!" => md5("!")
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);
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@ -82,25 +123,43 @@ foreach ($md_escape_table as $key => $char)
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function Markdown($text) {
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#
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# Main function. The order in which other subs are called here is
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# essential. Link and image substitutions need to happen before
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# _EscapeSpecialChars(), so that any *'s or _'s in the <a>
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# and <img> tags get encoded.
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#
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# Clear the global hashes. If we don't clear these, you get conflicts
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# from other articles when generating a page which contains more than
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# one article (e.g. an index page that shows the N most recent
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# articles):
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global $md_urls, $md_titles, $md_html_blocks;
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$md_urls = array();
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$md_titles = array();
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$md_html_blocks = array();
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# Standardize line endings:
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# DOS to Unix and Mac to Unix
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$text = str_replace(array("\r\n", "\r"), "\n", $text);
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# Make sure $text ends with a couple of newlines:
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$text .= "\n\n";
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# Convert all tabs to spaces.
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$text = _Detab($text);
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# Strip any lines consisting only of spaces and tabs.
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# This makes subsequent regexen easier to write, because we can
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# match consecutive blank lines with /\n+/ instead of something
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# contorted like /[ \t]*\n+/ .
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$text = preg_replace('/^[ \t]+$/m', '', $text);
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# Turn block-level HTML blocks into hash entries
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$text = _HashHTMLBlocks($text);
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# Strip link definitions, store in hashes.
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$text = _StripLinkDefinitions($text);
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$text = _EscapeSpecialChars($text);
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$text = _RunBlockGamut($text);
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$text = _UnescapeSpecialChars($text);
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@ -110,8 +169,16 @@ function Markdown($text) {
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function _StripLinkDefinitions($text) {
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#
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# Strips link definitions from text, stores the URLs and titles in
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# hash references.
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#
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global $md_tab_width;
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$less_than_tab = $md_tab_width - 1;
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# Link defs are in the form: ^[id]: url "optional title"
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$text = preg_replace_callback('{
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^[ \t]*\[(.+)\]: # id = $1
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^[ ]{0,'.$less_than_tab.'}\[(.+)\]: # id = $1
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[ \t]*
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\n? # maybe *one* newline
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[ \t]*
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\n? # maybe one newline
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[ \t]*
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(?:
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# Todo: Titles are delimited by "quotes" or (parens).
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(?<=\s) # lookbehind for whitespace
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["(]
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(.+?) # title = $3
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[")]
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@ -137,17 +204,37 @@ function _StripLinkDefinitions_callback($matches) {
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$link_id = strtolower($matches[1]);
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$md_urls[$link_id] = _EncodeAmpsAndAngles($matches[2]);
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if (isset($matches[3]))
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$md_titles[$link_id] = htmlentities($matches[3]);
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$md_titles[$link_id] = str_replace('"', '"', $matches[3]);
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return ''; # String that will replace the block
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}
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function _HashHTMLBlocks($text) {
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global $md_tab_width;
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$less_than_tab = $md_tab_width - 1;
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# Hashify HTML blocks:
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# We only want to do this for block-level HTML tags, such as headers,
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# lists, and tables. That's because we still want to wrap <p>s around
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# "paragraphs" that are wrapped in non-block-level tags, such as anchors,
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# phrase emphasis, and spans. The list of tags we're looking for is
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# hard-coded:
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$block_tags_a = 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|'.
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'script|noscript|form|fieldset|iframe|math|ins|del';
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$block_tags_b = 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|'.
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'script|noscript|form|fieldset|iframe|math';
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# First, look for nested blocks, e.g.:
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# <div>
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# <div>
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# tags for inner block must be indented.
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# </div>
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# </div>
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#
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# The outermost tags must start at the left margin for this to match, and
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# the inner nested divs must be indented.
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# We need to do this before the next, more liberal match, because the next
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# match will start at the first `<div>` and stop at the first `</div>`.
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$text = preg_replace_callback("{
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( # save in $1
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^ # start of line (with /m)
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'_HashHTMLBlocks_callback',
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$text);
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#
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# Now match more liberally, simply from `\n<tag>` to `</tag>\n`
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#
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$text = preg_replace_callback("{
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( # save in $1
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^ # start of line (with /m)
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'_HashHTMLBlocks_callback',
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$text);
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# Special case just for <hr />. It was easier to make a special case than
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# to make the other regex more complicated.
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$text = preg_replace_callback('{
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(?:
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(?<=\n\n) # Starting after a blank line
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\A\n? # the beginning of the doc
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)
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( # save in $1
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[ \t]*
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[ ]{0,'.$less_than_tab.'}
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<(hr) # start tag = $2
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\b # word break
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([^<>])*? #
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/?> # the matching end tag
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[ \t]*
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(?=\n{2,}|\Z) # followed by a blank line or end of document
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)
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}x',
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'_HashHTMLBlocks_callback',
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$text);
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# Special case for standalone HTML comments:
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$text = preg_replace_callback('{
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(?:
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(?<=\n\n) # Starting after a blank line
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| # or
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\A\n? # the beginning of the doc
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)
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( # save in $1
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[ ]{0,'.$less_than_tab.'}
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(?s:
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<!
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(--.*?--\s*)+
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>
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)
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[ \t]*
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(?=\n{2,}|\Z) # followed by a blank line or end of document
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)
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}x',
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'_HashHTMLBlocks_callback',
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$text);
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return $text;
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}
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function _HashHTMLBlocks_callback($matches) {
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@ -206,15 +320,19 @@ function _HashHTMLBlocks_callback($matches) {
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function _RunBlockGamut($text) {
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#
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# These are all the transformations that form block-level
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# tags like paragraphs, headers, and list items.
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#
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global $md_empty_element_suffix;
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$text = _DoHeaders($text);
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# Do Horizontal Rules:
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$text = preg_replace(
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array('/^( ?\* ?){3,}$/m',
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'/^( ?- ?){3,}$/m',
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'/^( ?_ ?){3,}$/m'),
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array('{^[ ]{0,2}([ ]?\*[ ]?){3,}[ \t]*$}mx',
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'{^[ ]{0,2}([ ]? -[ ]?){3,}[ \t]*$}mx',
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'{^[ ]{0,2}([ ]? _[ ]?){3,}[ \t]*$}mx'),
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"\n<hr$md_empty_element_suffix\n",
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$text);
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@ -224,9 +342,10 @@ function _RunBlockGamut($text) {
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$text = _DoBlockQuotes($text);
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# Make links out of things like `<http://example.com/>`
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$text = _DoAutoLinks($text);
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# We already ran _HashHTMLBlocks() before, in Markdown(), but that
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# was to escape raw HTML in the original Markdown source. This time,
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# we're escaping the markup we've just created, so that we don't wrap
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# <p> tags around block-level tags.
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$text = _HashHTMLBlocks($text);
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$text = _FormParagraphs($text);
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@ -236,20 +355,32 @@ function _RunBlockGamut($text) {
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function _RunSpanGamut($text) {
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#
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# These are all the transformations that occur *within* block-level
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# tags like paragraphs, headers, and list items.
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#
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global $md_empty_element_suffix;
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$text = _DoCodeSpans($text);
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# Fix unencoded ampersands and <'s:
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$text = _EncodeAmpsAndAngles($text);
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$text = _EscapeSpecialChars($text);
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# Process anchor and image tags. Images must come first,
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# because ![foo][f] looks like an anchor.
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$text = _DoImages($text);
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$text = _DoAnchors($text);
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# Make links out of things like `<http://example.com/>`
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# Must come after _DoAnchors(), because you can use < and >
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# delimiters in inline links like [this](<url>).
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$text = _DoAutoLinks($text);
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# Fix unencoded ampersands and <'s:
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$text = _EncodeAmpsAndAngles($text);
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$text = _DoItalicsAndBold($text);
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# Do hard breaks:
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$text = preg_replace('/ {2,}\n/', "<br$md_empty_element_suffix\n", $text);
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return $text;
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@ -261,8 +392,17 @@ function _EscapeSpecialChars($text) {
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$tokens = _TokenizeHTML($text);
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$text = ''; # rebuild $text from the tokens
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# $in_pre = 0; # Keep track of when we're inside <pre> or <code> tags.
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# $tags_to_skip = "!<(/?)(?:pre|code|kbd|script|math)[\s>]!";
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foreach ($tokens as $cur_token) {
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if ($cur_token[0] == 'tag') {
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# Within tags, encode * and _ so they don't conflict
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# with their use in Markdown for italics and strong.
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# We're replacing each such character with its
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# corresponding MD5 checksum value; this is likely
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# overkill, but it should prevent us from colliding
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# with the escape values by accident.
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$cur_token[1] = str_replace(array('*', '_'),
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array($md_escape_table['*'], $md_escape_table['_']),
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$cur_token[1]);
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@ -278,6 +418,9 @@ function _EscapeSpecialChars($text) {
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function _DoAnchors($text) {
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#
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# Turn Markdown link shortcuts into XHTML <a> tags.
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#
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global $md_nested_brackets;
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#
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# First, handle reference-style links: [link text] [id]
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@ -298,6 +441,9 @@ function _DoAnchors($text) {
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}xs",
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'_DoAnchors_reference_callback', $text);
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#
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# Next, inline-style links: [link text](url "optional title")
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#
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$text = preg_replace_callback("{
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( # wrap whole match in $1
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\\[
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@ -305,7 +451,7 @@ function _DoAnchors($text) {
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\\]
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\\( # literal paren
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[ \\t]*
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<?(.+?)>? # href = $3
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<?(.*?)>? # href = $3
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[ \\t]*
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( # $4
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(['\"]) # quote char = $5
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@ -352,10 +498,10 @@ function _DoAnchors_reference_callback($matches) {
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}
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function _DoAnchors_inline_callback($matches) {
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global $md_escape_table;
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$whole_match = $matches[1];
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$link_text = $matches[2];
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$url = $matches[3];
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$title = $matches[6];
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$whole_match = $matches[1];
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$link_text = $matches[2];
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$url = $matches[3];
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$title =& $matches[6];
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# We've got to encode these to avoid conflicting with italics/bold.
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$url = str_replace(array('*', '_'),
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@ -363,7 +509,7 @@ function _DoAnchors_inline_callback($matches) {
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$url);
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$result = "<a href=\"$url\"";
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if (isset($title)) {
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$title = str_replace('"', '"', $title);
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$title = str_replace('"', '"', $title);
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$title = str_replace(array('*', '_'),
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array($md_escape_table['*'], $md_escape_table['_']),
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$title);
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|
|
@ -377,6 +523,12 @@ function _DoAnchors_inline_callback($matches) {
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|
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function _DoImages($text) {
|
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#
|
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# Turn Markdown image shortcuts into <img> tags.
|
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#
|
||||
#
|
||||
# First, handle reference-style labeled images: ![alt text][id]
|
||||
#
|
||||
$text = preg_replace_callback('{
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( # wrap whole match in $1
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!\[
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||||
|
|
@ -456,12 +608,12 @@ function _DoImages_reference_callback($matches) {
|
|||
}
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function _DoImages_inline_callback($matches) {
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global $md_empty_element_suffix, $md_escape_table;
|
||||
$whole_match = $matches[1];
|
||||
$alt_text = $matches[2];
|
||||
$url = $matches[3];
|
||||
$title = '';
|
||||
$whole_match = $matches[1];
|
||||
$alt_text = $matches[2];
|
||||
$url = $matches[3];
|
||||
$title = '';
|
||||
if (isset($matches[6])) {
|
||||
$title = $matches[6];
|
||||
$title = $matches[6];
|
||||
}
|
||||
|
||||
$alt_text = str_replace('"', '"', $alt_text);
|
||||
|
|
@ -484,13 +636,27 @@ function _DoImages_inline_callback($matches) {
|
|||
|
||||
|
||||
function _DoHeaders($text) {
|
||||
# Setext-style headers:
|
||||
# Header 1
|
||||
# ========
|
||||
#
|
||||
# Header 2
|
||||
# --------
|
||||
#
|
||||
$text = preg_replace(
|
||||
array("/(.+)[ \t]*\n=+[ \t]*\n+/e",
|
||||
"/(.+)[ \t]*\n-+[ \t]*\n+/e"),
|
||||
array('{ ^(.+)[ \t]*\n=+[ \t]*\n+ }emx',
|
||||
'{ ^(.+)[ \t]*\n-+[ \t]*\n+ }emx'),
|
||||
array("'<h1>'._RunSpanGamut(_UnslashQuotes('\\1')).'</h1>\n\n'",
|
||||
"'<h2>'._RunSpanGamut(_UnslashQuotes('\\1')).'</h2>\n\n'"),
|
||||
$text);
|
||||
|
||||
# atx-style headers:
|
||||
# # Header 1
|
||||
# ## Header 2
|
||||
# ## Header 2 with closing hashes ##
|
||||
# ...
|
||||
# ###### Header 6
|
||||
#
|
||||
$text = preg_replace("{
|
||||
^(\\#{1,6}) # $1 = string of #'s
|
||||
[ \\t]*
|
||||
|
|
@ -510,7 +676,7 @@ function _DoLists($text) {
|
|||
#
|
||||
# Form HTML ordered (numbered) and unordered (bulleted) lists.
|
||||
#
|
||||
global $md_tab_width;
|
||||
global $md_tab_width, $md_list_level;
|
||||
$less_than_tab = $md_tab_width - 1;
|
||||
|
||||
# Re-usable patterns to match list item bullets and number markers:
|
||||
|
|
@ -518,27 +684,45 @@ function _DoLists($text) {
|
|||
$marker_ol = '\d+[.]';
|
||||
$marker_any = "(?:$marker_ul|$marker_ol)";
|
||||
|
||||
$text = preg_replace_callback("{
|
||||
( # $1
|
||||
( # $2
|
||||
^[ ]{0,$less_than_tab}
|
||||
($marker_any) # $3 - first list item marker
|
||||
[ \\t]+
|
||||
# Re-usable pattern to match any entirel ul or ol list:
|
||||
$whole_list = '
|
||||
( # $1 = whole list
|
||||
( # $2
|
||||
[ ]{0,'.$less_than_tab.'}
|
||||
('.$marker_any.') # $3 = first list item marker
|
||||
[ \t]+
|
||||
)
|
||||
(?s:.+?)
|
||||
( # $4
|
||||
\z
|
||||
|
|
||||
\n{2,}
|
||||
(?=\S)
|
||||
(?! # Negative lookahead for another list item marker
|
||||
[ \t]*
|
||||
'.$marker_any.'[ \t]+
|
||||
)
|
||||
(?s:.+?)
|
||||
( # $4
|
||||
\\z
|
||||
|
|
||||
\\n{2,}
|
||||
(?=\\S)
|
||||
(?! # Negative lookahead for another list item marker
|
||||
[ \\t]*
|
||||
{$marker_any}[ \\t]+
|
||||
)
|
||||
)
|
||||
)
|
||||
}xm",
|
||||
'_DoLists_callback', $text);
|
||||
)
|
||||
)
|
||||
'; // mx
|
||||
|
||||
# We use a different prefix before nested lists than top-level lists.
|
||||
# See extended comment in _ProcessListItems().
|
||||
|
||||
if ($md_list_level) {
|
||||
$text = preg_replace_callback('{
|
||||
^
|
||||
'.$whole_list.'
|
||||
}mx',
|
||||
'_DoLists_callback', $text);
|
||||
}
|
||||
else {
|
||||
$text = preg_replace_callback('{
|
||||
(?:(?<=\n\n)|\A\n?)
|
||||
'.$whole_list.'
|
||||
}mx',
|
||||
'_DoLists_callback', $text);
|
||||
}
|
||||
|
||||
return $text;
|
||||
}
|
||||
|
|
@ -549,17 +733,46 @@ function _DoLists_callback($matches) {
|
|||
$marker_any = "(?:$marker_ul|$marker_ol)";
|
||||
|
||||
$list = $matches[1];
|
||||
$list_type = preg_match('/[*+-]/', $matches[3]) ? "ul" : "ol";
|
||||
$list_type = preg_match("/$marker_ul/", $matches[3]) ? "ul" : "ol";
|
||||
# Turn double returns into triple returns, so that we can make a
|
||||
# paragraph for the last item in a list, if necessary:
|
||||
$list = preg_replace("/\n{2,}/", "\n\n\n", $list);
|
||||
$result = _ProcessListItems($list, $marker_any);
|
||||
$result = "<$list_type>\n" . $result . "</$list_type>\n\n";
|
||||
$result = "<$list_type>\n" . $result . "</$list_type>\n";
|
||||
return $result;
|
||||
}
|
||||
|
||||
|
||||
function _ProcessListItems($list_str, $marker_any) {
|
||||
#
|
||||
# Process the contents of a single ordered or unordered list, splitting it
|
||||
# into individual list items.
|
||||
#
|
||||
global $md_list_level;
|
||||
|
||||
# The $md_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.".
|
||||
|
||||
$md_list_level++;
|
||||
|
||||
# trim trailing blank lines:
|
||||
$list_str = preg_replace("/\n{2,}\\z/", "\n", $list_str);
|
||||
|
||||
|
|
@ -573,16 +786,16 @@ function _ProcessListItems($list_str, $marker_any) {
|
|||
}xm',
|
||||
'_ProcessListItems_callback', $list_str);
|
||||
|
||||
$md_list_level--;
|
||||
return $list_str;
|
||||
}
|
||||
function _ProcessListItems_callback($matches) {
|
||||
$item = $matches[4];
|
||||
$leading_line = $matches[1];
|
||||
$leading_space = $matches[2];
|
||||
$leading_line =& $matches[1];
|
||||
$leading_space =& $matches[2];
|
||||
|
||||
if ($leading_line || preg_match('/\n{2,}/', $item)) {
|
||||
$item = _RunBlockGamut(_Outdent($item));
|
||||
#$item =~ s/\n+/\n/g;
|
||||
}
|
||||
else {
|
||||
# Recursion for sub-lists:
|
||||
|
|
@ -596,6 +809,9 @@ function _ProcessListItems_callback($matches) {
|
|||
|
||||
|
||||
function _DoCodeBlocks($text) {
|
||||
#
|
||||
# Process Markdown `<pre><code>` blocks.
|
||||
#
|
||||
global $md_tab_width;
|
||||
$text = preg_replace_callback("{
|
||||
(?:\\n\\n|\\A)
|
||||
|
|
@ -615,7 +831,7 @@ function _DoCodeBlocks_callback($matches) {
|
|||
$codeblock = $matches[1];
|
||||
|
||||
$codeblock = _EncodeCode(_Outdent($codeblock));
|
||||
$codeblock = _Detab($codeblock);
|
||||
// $codeblock = _Detab($codeblock);
|
||||
# trim leading newlines and trailing whitespace
|
||||
$codeblock = preg_replace(array('/\A\n+/', '/\s+\z/'), '', $codeblock);
|
||||
|
||||
|
|
@ -626,6 +842,30 @@ function _DoCodeBlocks_callback($matches) {
|
|||
|
||||
|
||||
function _DoCodeSpans($text) {
|
||||
#
|
||||
# * Backtick quotes are used for <code></code> spans.
|
||||
#
|
||||
# * You can use multiple backticks as the delimiters if you want to
|
||||
# include literal backticks in the code span. So, this input:
|
||||
#
|
||||
# Just type ``foo `bar` baz`` at the prompt.
|
||||
#
|
||||
# Will translate to:
|
||||
#
|
||||
# <p>Just type <code>foo `bar` baz</code> at the prompt.</p>
|
||||
#
|
||||
# There's no arbitrary limit to the number of backticks you
|
||||
# can use as delimters. If you need three consecutive backticks
|
||||
# in your code, use four for delimiters, etc.
|
||||
#
|
||||
# * You can use spaces to get literal backticks at the edges:
|
||||
#
|
||||
# ... type `` `bar` `` ...
|
||||
#
|
||||
# Turns to:
|
||||
#
|
||||
# ... type <code>`bar`</code> ...
|
||||
#
|
||||
$text = preg_replace_callback("@
|
||||
(`+) # $1 = Opening run of `
|
||||
(.+?) # $2 = The code block
|
||||
|
|
@ -647,13 +887,22 @@ function _DoCodeSpans_callback($matches) {
|
|||
|
||||
|
||||
function _EncodeCode($_) {
|
||||
#
|
||||
# Encode/escape certain characters inside Markdown code runs.
|
||||
# The point is that in code, these characters are literals,
|
||||
# and lose their special Markdown meanings.
|
||||
#
|
||||
global $md_escape_table;
|
||||
|
||||
# Encode all ampersands; HTML entities are not
|
||||
# entities within a Markdown code span.
|
||||
$_ = str_replace('&', '&', $_);
|
||||
|
||||
# Do the angle bracket song and dance:
|
||||
$_ = str_replace(array('<', '>'),
|
||||
array('<', '>'), $_);
|
||||
|
||||
# Now, escape characters that are magic in Markdown:
|
||||
$_ = str_replace(array_keys($md_escape_table),
|
||||
array_values($md_escape_table), $_);
|
||||
|
||||
|
|
@ -663,7 +912,7 @@ function _EncodeCode($_) {
|
|||
|
||||
function _DoItalicsAndBold($text) {
|
||||
# <strong> must go first:
|
||||
$text = preg_replace('{ (\*\*|__) (?=\S) (.+?) (?<=\S) \1 }sx',
|
||||
$text = preg_replace('{ (\*\*|__) (?=\S) (.+?[*_]*) (?<=\S) \1 }sx',
|
||||
'<strong>\2</strong>', $text);
|
||||
# Then <em>:
|
||||
$text = preg_replace('{ (\*|_) (?=\S) (.+?) (?<=\S) \1 }sx',
|
||||
|
|
@ -709,14 +958,20 @@ function _DoBlockQuotes_callback2($matches) {
|
|||
|
||||
|
||||
function _FormParagraphs($text) {
|
||||
#
|
||||
# Params:
|
||||
# $text - string to process with html <p> tags
|
||||
#
|
||||
global $md_html_blocks;
|
||||
|
||||
# Strip leading and trailing lines:
|
||||
$text = preg_replace(array('/\A\n+/', '/\n+\z/'), '', $text);
|
||||
|
||||
$grafs = preg_split('/\n{2,}/', $text, -1, PREG_SPLIT_NO_EMPTY);
|
||||
$count = count($grafs);
|
||||
|
||||
#
|
||||
# Wrap <p> tags.
|
||||
#
|
||||
foreach ($grafs as $key => $value) {
|
||||
if (!isset( $md_html_blocks[$value] )) {
|
||||
$value = _RunSpanGamut($value);
|
||||
|
|
@ -726,6 +981,9 @@ function _FormParagraphs($text) {
|
|||
}
|
||||
}
|
||||
|
||||
#
|
||||
# Unhashify HTML blocks
|
||||
#
|
||||
foreach ($grafs as $key => $value) {
|
||||
if (isset( $md_html_blocks[$value] )) {
|
||||
$grafs[$key] = $md_html_blocks[$value];
|
||||
|
|
@ -737,6 +995,10 @@ function _FormParagraphs($text) {
|
|||
|
||||
|
||||
function _EncodeAmpsAndAngles($text) {
|
||||
# Smart processing for ampersands and angle brackets that need to be encoded.
|
||||
|
||||
# Ampersand-encoding based entirely on Nat Irons's Amputator MT plugin:
|
||||
# http://bumppo.net/projects/amputator/
|
||||
$text = preg_replace('/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/',
|
||||
'&', $text);;
|
||||
|
||||
|
|
@ -748,6 +1010,11 @@ function _EncodeAmpsAndAngles($text) {
|
|||
|
||||
|
||||
function _EncodeBackslashEscapes($text) {
|
||||
#
|
||||
# Parameter: String.
|
||||
# Returns: The string, with after processing the following backslash
|
||||
# escape sequences.
|
||||
#
|
||||
global $md_escape_table, $md_backslash_escape_table;
|
||||
# Must process escaped backslashes first.
|
||||
return str_replace(array_keys($md_backslash_escape_table),
|
||||
|
|
@ -762,6 +1029,7 @@ function _DoAutoLinks($text) {
|
|||
# Email addresses: <address@domain.foo>
|
||||
$text = preg_replace('{
|
||||
<
|
||||
(?:mailto:)?
|
||||
(
|
||||
[-.\w]+
|
||||
\@
|
||||
|
|
@ -777,6 +1045,20 @@ function _DoAutoLinks($text) {
|
|||
|
||||
|
||||
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.:
|
||||
#
|
||||
# <a href="mailto:foo@e
|
||||
# xample.com">foo
|
||||
# @example.com</a>
|
||||
#
|
||||
# Based by a filter by Matthew Wickline, posted to the BBEdit-Talk
|
||||
# mailing list: <http://tinyurl.com/yu7ue>
|
||||
#
|
||||
$addr = "mailto:" . $addr;
|
||||
$length = strlen($addr);
|
||||
|
||||
|
|
@ -802,56 +1084,199 @@ function _EncodeEmailAddress_callback($matches) {
|
|||
|
||||
|
||||
function _UnescapeSpecialChars($text) {
|
||||
#
|
||||
# Swap back in all the special characters we've hidden.
|
||||
#
|
||||
global $md_escape_table;
|
||||
return str_replace(array_values($md_escape_table),
|
||||
array_keys($md_escape_table), $text);
|
||||
}
|
||||
|
||||
|
||||
if (!function_exists('_TokenizeHTML')) {
|
||||
function _TokenizeHTML($str) {
|
||||
$index = 0;
|
||||
$tokens = array();
|
||||
# _TokenizeHTML is shared between PHP Markdown and PHP SmartyPants.
|
||||
# We only define it if it is not already defined.
|
||||
if (!function_exists('_TokenizeHTML')) :
|
||||
function _TokenizeHTML($str) {
|
||||
#
|
||||
# Parameter: String containing HTML markup.
|
||||
# Returns: An array of the tokens comprising the input
|
||||
# string. Each token is either a tag (possibly with nested,
|
||||
# tags contained therein, such as <a href="<MTFoo>">, or a
|
||||
# run of text between tags. Each element of the array is a
|
||||
# two-element array; the first is either 'tag' or 'text';
|
||||
# the second is the actual value.
|
||||
#
|
||||
#
|
||||
# Regular expression derived from the _tokenize() subroutine in
|
||||
# Brad Choate's MTRegex plugin.
|
||||
# <http://www.bradchoate.com/past/mtregex.php>
|
||||
#
|
||||
$index = 0;
|
||||
$tokens = array();
|
||||
|
||||
$depth = 6;
|
||||
$nested_tags = str_repeat('(?:<[a-z\/!$](?:[^<>]|',$depth)
|
||||
.str_repeat(')*>)', $depth);
|
||||
$match = "(?s:<!(?:--.*?--\s*)+>)|". # comment
|
||||
"(?s:<\?.*?\?>)|". # processing instruction
|
||||
"$nested_tags"; # nested tags
|
||||
$match = '(?s:<!(?:--.*?--\s*)+>)|'. # comment
|
||||
'(?s:<\?.*?\?>)|'. # processing instruction
|
||||
'(?:</?[\w:$]+\b(?>[^"\'>]+|"[^"]*"|\'[^\']*\')*>)'; # regular tags
|
||||
|
||||
$parts = preg_split("/($match)/", $str, -1, PREG_SPLIT_DELIM_CAPTURE);
|
||||
$parts = preg_split("{($match)}", $str, -1, PREG_SPLIT_DELIM_CAPTURE);
|
||||
|
||||
foreach ($parts as $part) {
|
||||
if (++$index % 2 && $part != '')
|
||||
array_push($tokens, array('text', $part));
|
||||
else
|
||||
array_push($tokens, array('tag', $part));
|
||||
}
|
||||
|
||||
return $tokens;
|
||||
foreach ($parts as $part) {
|
||||
if (++$index % 2 && $part != '')
|
||||
array_push($tokens, array('text', $part));
|
||||
else
|
||||
array_push($tokens, array('tag', $part));
|
||||
}
|
||||
|
||||
return $tokens;
|
||||
}
|
||||
endif;
|
||||
|
||||
|
||||
function _Outdent($text) {
|
||||
#
|
||||
# Remove one level of line-leading tabs or spaces
|
||||
#
|
||||
global $md_tab_width;
|
||||
return preg_replace("/^(\\t|[ ]{1,$md_tab_width})/m", "", $text);
|
||||
}
|
||||
|
||||
|
||||
function _Detab($text) {
|
||||
#
|
||||
# Replace tabs with the appropriate amount of space.
|
||||
#
|
||||
global $md_tab_width;
|
||||
$text = preg_replace(
|
||||
"/(.*?)\t/e",
|
||||
"'\\1'.str_repeat(' ', $md_tab_width - strlen('\\1') % $md_tab_width)",
|
||||
$text);
|
||||
|
||||
# For each line we separate the line in blocks delemited by
|
||||
# tab characters. Then we reconstruct the line adding the appropriate
|
||||
# number of space charcters.
|
||||
|
||||
$lines = explode("\n", $text);
|
||||
$text = "";
|
||||
|
||||
foreach ($lines as $line) {
|
||||
# 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 = $md_tab_width - strlen($line) % $md_tab_width;
|
||||
$line .= str_repeat(" ", $amount) . $block;
|
||||
}
|
||||
$text .= "$line\n";
|
||||
}
|
||||
return $text;
|
||||
}
|
||||
|
||||
|
||||
function _UnslashQuotes($text) {
|
||||
#
|
||||
# This function is useful to remove automaticaly slashed double quotes
|
||||
# when using preg_replace and evaluating an expression.
|
||||
# Parameter: String.
|
||||
# Returns: The string with any slash-double-quote (\") sequence replaced
|
||||
# by a single double quote.
|
||||
#
|
||||
return str_replace('\"', '"', $text);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
|
||||
PHP Markdown
|
||||
============
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This is a PHP translation of the original Markdown formatter written in
|
||||
Perl by John Gruber.
|
||||
|
||||
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 <div> and <table> as well).
|
||||
|
||||
For more information about Markdown's syntax, see:
|
||||
|
||||
<http://daringfireball.net/projects/markdown/>
|
||||
|
||||
|
||||
Bugs
|
||||
----
|
||||
|
||||
To file bug reports please send email to:
|
||||
|
||||
<michel.fortin@michelf.com>
|
||||
|
||||
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.
|
||||
|
||||
1.0.1 - 17 Dec 2004
|
||||
|
||||
1.0 - 21 Aug 2004
|
||||
|
||||
|
||||
Author & Contributors
|
||||
---------------------
|
||||
|
||||
Original Perl version by John Gruber
|
||||
<http://daringfireball.net/>
|
||||
|
||||
PHP port and other contributions by Michel Fortin
|
||||
<http://www.michelf.com/>
|
||||
|
||||
|
||||
Copyright and License
|
||||
---------------------
|
||||
|
||||
Copyright (c) 2004 Michel Fortin
|
||||
<http://www.michelf.com/>
|
||||
All rights reserved.
|
||||
|
||||
Copyright (c) 2003-2004 John Gruber
|
||||
<http://daringfireball.net/>
|
||||
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.
|
||||
|
||||
*/
|
||||
?>
|
||||
Loading…
Reference in New Issue