diff options
Diffstat (limited to 'library')
| -rw-r--r-- | library/markdown.php | 2932 | ||||
| -rw-r--r-- | library/markdownify/LICENSE_LGPL.txt | 504 | ||||
| -rw-r--r-- | library/markdownify/TODO | 29 | ||||
| -rw-r--r-- | library/markdownify/example.php | 51 | ||||
| -rw-r--r-- | library/markdownify/markdownify.php | 1197 | ||||
| -rwxr-xr-x | library/markdownify/markdownify_cli.php | 33 | ||||
| -rw-r--r-- | library/markdownify/markdownify_extra.php | 489 | ||||
| -rw-r--r-- | library/markdownify/parsehtml/parsehtml.php | 618 |
8 files changed, 0 insertions, 5853 deletions
diff --git a/library/markdown.php b/library/markdown.php deleted file mode 100644 index 0e3275ff2..000000000 --- a/library/markdown.php +++ /dev/null @@ -1,2932 +0,0 @@ -<?php -# -# Markdown Extra - A text-to-HTML conversion tool for web writers -# -# PHP Markdown & Extra -# Copyright (c) 2004-2012 Michel Fortin -# <http://michelf.com/projects/php-markdown/> -# -# Original Markdown -# Copyright (c) 2004-2006 John Gruber -# <http://daringfireball.net/projects/markdown/> -# - - -define( 'MARKDOWN_VERSION', "1.0.1o" ); # Sun 8 Jan 2012 -define( 'MARKDOWNEXTRA_VERSION', "1.2.5" ); # Sun 8 Jan 2012 - - -# -# Global default settings: -# - -# Change to ">" for HTML output -@define( 'MARKDOWN_EMPTY_ELEMENT_SUFFIX', " />"); - -# Define the width of a tab for code blocks. -@define( 'MARKDOWN_TAB_WIDTH', 4 ); - -# Optional title attribute for footnote links and backlinks. -@define( 'MARKDOWN_FN_LINK_TITLE', "" ); -@define( 'MARKDOWN_FN_BACKLINK_TITLE', "" ); - -# Optional class attribute for footnote links and backlinks. -@define( 'MARKDOWN_FN_LINK_CLASS', "" ); -@define( 'MARKDOWN_FN_BACKLINK_CLASS', "" ); - - -# -# WordPress settings: -# - -# Change to false to remove Markdown from posts and/or comments. -@define( 'MARKDOWN_WP_POSTS', true ); -@define( 'MARKDOWN_WP_COMMENTS', true ); - - - -### Standard Function Interface ### - -@define( 'MARKDOWN_PARSER_CLASS', 'MarkdownExtra_Parser' ); - -function Markdown($text) { -# -# Initialize the parser and return the result of its transform method. -# - # Setup static parser variable. - static $parser; - if (!isset($parser)) { - $parser_class = MARKDOWN_PARSER_CLASS; - $parser = new $parser_class; - } - - # Transform text using parser. - return $parser->transform($text); -} - - -### WordPress Plugin Interface ### - -/* -Plugin Name: Markdown Extra -Plugin URI: http://michelf.com/projects/php-markdown/ -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://michelf.com/projects/php-markdown/">More...</a> -Version: 1.2.5 -Author: Michel Fortin -Author URI: http://michelf.com/ -*/ - -if (isset($wp_version)) { - # More details about how it works here: - # <http://michelf.com/weblog/2005/wordpress-text-flow-vs-markdown/> - - # Post content and excerpts - # - Remove WordPress paragraph generator. - # - Run Markdown on excerpt, then remove all tags. - # - Add paragraph tag around the excerpt, but remove it for the excerpt rss. - if (MARKDOWN_WP_POSTS) { - remove_filter('the_content', 'wpautop'); - remove_filter('the_content_rss', 'wpautop'); - remove_filter('the_excerpt', 'wpautop'); - add_filter('the_content', 'mdwp_MarkdownPost', 6); - add_filter('the_content_rss', 'mdwp_MarkdownPost', 6); - add_filter('get_the_excerpt', 'mdwp_MarkdownPost', 6); - add_filter('get_the_excerpt', 'trim', 7); - add_filter('the_excerpt', 'mdwp_add_p'); - add_filter('the_excerpt_rss', 'mdwp_strip_p'); - - remove_filter('content_save_pre', 'balanceTags', 50); - remove_filter('excerpt_save_pre', 'balanceTags', 50); - add_filter('the_content', 'balanceTags', 50); - add_filter('get_the_excerpt', 'balanceTags', 9); - } - - # Add a footnote id prefix to posts when inside a loop. - function mdwp_MarkdownPost($text) { - static $parser; - if (!$parser) { - $parser_class = MARKDOWN_PARSER_CLASS; - $parser = new $parser_class; - } - if (is_single() || is_page() || is_feed()) { - $parser->fn_id_prefix = ""; - } else { - $parser->fn_id_prefix = get_the_ID() . "."; - } - return $parser->transform($text); - } - - # Comments - # - Remove WordPress paragraph generator. - # - Remove WordPress auto-link generator. - # - Scramble important tags before passing them to the kses filter. - # - Run Markdown on excerpt then remove paragraph tags. - if (MARKDOWN_WP_COMMENTS) { - remove_filter('comment_text', 'wpautop', 30); - remove_filter('comment_text', 'make_clickable'); - add_filter('pre_comment_content', 'Markdown', 6); - add_filter('pre_comment_content', 'mdwp_hide_tags', 8); - add_filter('pre_comment_content', 'mdwp_show_tags', 12); - add_filter('get_comment_text', 'Markdown', 6); - add_filter('get_comment_excerpt', 'Markdown', 6); - add_filter('get_comment_excerpt', 'mdwp_strip_p', 7); - - global $mdwp_hidden_tags, $mdwp_placeholders; - $mdwp_hidden_tags = explode(' ', - '<p> </p> <pre> </pre> <ol> </ol> <ul> </ul> <li> </li>'); - $mdwp_placeholders = explode(' ', str_rot13( - 'pEj07ZbbBZ U1kqgh4w4p pre2zmeN6K QTi31t9pre ol0MP1jzJR '. - 'ML5IjmbRol ulANi1NsGY J7zRLJqPul liA8ctl16T K9nhooUHli')); - } - - function mdwp_add_p($text) { - if (!preg_match('{^$|^<(p|ul|ol|dl|pre|blockquote)>}i', $text)) { - $text = '<p>'.$text.'</p>'; - $text = preg_replace('{\n{2,}}', "</p>\n\n<p>", $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, $text); - } -} - - -### bBlog Plugin Info ### - -function identify_modifier_markdown() { - return array( - 'name' => 'markdown', - 'type' => 'modifier', - 'nicename' => 'PHP Markdown Extra', - 'description' => 'A text-to-HTML conversion tool for web writers', - 'authors' => 'Michel Fortin and John Gruber', - 'licence' => 'GPL', - 'version' => MARKDOWNEXTRA_VERSION, - 'help' => '<a href="http://daringfireball.net/projects/markdown/syntax">Markdown syntax</a> allows you to write using an easy-to-read, easy-to-write plain text format. Based on the original Perl version by <a href="http://daringfireball.net/">John Gruber</a>. <a href="http://michelf.com/projects/php-markdown/">More...</a>', - ); -} - - -### Smarty Modifier Interface ### - -function smarty_modifier_markdown($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 - [ ]* - (?: - <(.+?)> # url = $2 - | - (\S+?) # url = $3 - ) - [ ]* - \n? # maybe one newline - [ ]* - (?: - (?<=\s) # lookbehind for whitespace - ["(] - (.*?) # title = $4 - [")] - [ ]* - )? # title is optional - (?:\n+|\Z) - }xm', - array(&$this, '_stripLinkDefinitions_callback'), - $text); - return $text; - } - function _stripLinkDefinitions_callback($matches) { - $link_id = strtolower($matches[1]); - $url = $matches[2] == '' ? $matches[3] : $matches[2]; - $this->urls[$link_id] = $url; - $this->titles[$link_id] =& $matches[4]; - return ''; # String that will replace the block - } - - - function hashHTMLBlocks($text) { - if ($this->no_markup) return $text; - - $less_than_tab = $this->tab_width - 1; - - # Hashify HTML blocks: - # We only want to do this for block-level HTML tags, such as headers, - # lists, and tables. That's because we still want to wrap <p>s around - # "paragraphs" that are wrapped in non-block-level tags, such as anchors, - # phrase emphasis, and spans. The list of tags we're looking for is - # hard-coded: - # - # * List "a" is made of tags which can be both inline or block-level. - # These will be treated block-level when the start tag is alone on - # its line, otherwise they're not matched here and will be taken as - # inline later. - # * List "b" is made of tags which are always block-level; - # - $block_tags_a_re = 'ins|del'; - $block_tags_b_re = 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|address|'. - 'script|noscript|form|fieldset|iframe|math'; - - # Regular expression for the content of a block tag. - $nested_tags_level = 4; - $attr = ' - (?> # optional tag attributes - \s # starts with whitespace - (?> - [^>"/]+ # text outside quotes - | - /+(?!>) # slash not followed by ">" - | - "[^"]*" # text inside double quotes (tolerate ">") - | - \'[^\']*\' # text inside single quotes (tolerate ">") - )* - )? - '; - $content = - str_repeat(' - (?> - [^<]+ # content without tag - | - <\2 # nested opening tag - '.$attr.' # attributes - (?> - /> - | - >', $nested_tags_level). # end of opening tag - '.*?'. # last level nested tag content - str_repeat(' - </\2\s*> # closing nested tag - ) - | - <(?!/\2\s*> # other tags with a different name - ) - )*', - $nested_tags_level); - $content2 = str_replace('\2', '\3', $content); - - # First, look for nested blocks, e.g.: - # <div> - # <div> - # tags for inner block must be indented. - # </div> - # </div> - # - # The outermost tags must start at the left margin for this to match, and - # the inner nested divs must be indented. - # We need to do this before the next, more liberal match, because the next - # match will start at the first `<div>` and stop at the first `</div>`. - $text = preg_replace_callback('{(?> - (?> - (?<=\n\n) # Starting after a blank line - | # or - \A\n? # the beginning of the doc - ) - ( # save in $1 - - # Match from `\n<tag>` to `</tag>\n`, handling nested tags - # in between. - - [ ]{0,'.$less_than_tab.'} - <('.$block_tags_b_re.')# start tag = $2 - '.$attr.'> # attributes followed by > and \n - '.$content.' # content, support nesting - </\2> # the matching end tag - [ ]* # trailing spaces/tabs - (?=\n+|\Z) # followed by a newline or end of document - - | # Special version for tags of group a. - - [ ]{0,'.$less_than_tab.'} - <('.$block_tags_a_re.')# start tag = $3 - '.$attr.'>[ ]*\n # attributes followed by > - '.$content2.' # content, support nesting - </\3> # the matching end tag - [ ]* # trailing spaces/tabs - (?=\n+|\Z) # followed by a newline or end of document - - | # Special case just for <hr />. It was easier to make a special - # case than to make the other regex more complicated. - - [ ]{0,'.$less_than_tab.'} - <(hr) # start tag = $2 - '.$attr.' # attributes - /?> # the matching end tag - [ ]* - (?=\n{2,}|\Z) # followed by a blank line or end of document - - | # Special case for standalone HTML comments: - - [ ]{0,'.$less_than_tab.'} - (?s: - <!-- .*? --> - ) - [ ]* - (?=\n{2,}|\Z) # followed by a blank line or end of document - - | # PHP and ASP-style processor instructions (<? and <%) - - [ ]{0,'.$less_than_tab.'} - (?s: - <([?%]) # $2 - .*? - \2> - ) - [ ]* - (?=\n{2,}|\Z) # followed by a blank line or end of document - - ) - )}Sxmi', - array(&$this, '_hashHTMLBlocks_callback'), - $text); - - return $text; - } - function _hashHTMLBlocks_callback($matches) { - $text = $matches[1]; - $key = $this->hashBlock($text); - return "\n\n$key\n\n"; - } - - - function hashPart($text, $boundary = 'X') { - # - # Called whenever a tag must be hashed when a function insert an atomic - # element in the text stream. Passing $text to through this function gives - # a unique text-token which will be reverted back when calling unhash. - # - # The $boundary argument specify what character should be used to surround - # the token. By convension, "B" is used for block elements that needs not - # to be wrapped into paragraph tags at the end, ":" is used for elements - # that are word separators and "X" is used in the general case. - # - # Swap back any tag hash found in $text so we do not have to `unhash` - # multiple times at the end. - $text = $this->unhash($text); - - # Then hash the block. - static $i = 0; - $key = "$boundary\x1A" . ++$i . $boundary; - $this->html_hashes[$key] = $text; - return $key; # String that will replace the tag. - } - - - function hashBlock($text) { - # - # Shortcut function for hashPart with block-level boundaries. - # - return $this->hashPart($text, 'B'); - } - - - var $block_gamut = array( - # - # These are all the transformations that form block-level - # tags like paragraphs, headers, and list items. - # - "doHeaders" => 10, - "doHorizontalRules" => 20, - - "doLists" => 40, - "doCodeBlocks" => 50, - "doBlockQuotes" => 60, - ); - - function runBlockGamut($text) { - # - # Run block gamut tranformations. - # - # We need to escape raw HTML in Markdown source before doing anything - # else. This need to be done for each block, and not only at the - # begining in the Markdown function since hashed blocks can be part of - # list items and could have been indented. Indented blocks would have - # been seen as a code block in a previous pass of hashHTMLBlocks. - $text = $this->hashHTMLBlocks($text); - - return $this->runBasicBlockGamut($text); - } - - function runBasicBlockGamut($text) { - # - # Run block gamut tranformations, without hashing HTML blocks. This is - # useful when HTML blocks are known to be already hashed, like in the first - # whole-document pass. - # - foreach ($this->block_gamut as $method => $priority) { - $text = $this->$method($text); - } - - # Finally form paragraph and restore hashed blocks. - $text = $this->formParagraphs($text); - - return $text; - } - - - function doHorizontalRules($text) { - # Do Horizontal Rules: - return preg_replace( - '{ - ^[ ]{0,3} # Leading space - ([-*_]) # $1: First marker - (?> # Repeated marker group - [ ]{0,2} # Zero, one, or two spaces. - \1 # Marker character - ){2,} # Group repeated at least twice - [ ]* # Tailing spaces - $ # End of line. - }mx', - "\n".$this->hashBlock("<hr$this->empty_element_suffix")."\n", - $text); - } - - - var $span_gamut = array( - # - # These are all the transformations that occur *within* block-level - # tags like paragraphs, headers, and list items. - # - # Process character escapes, code spans, and inline HTML - # in one shot. - "parseSpan" => -30, - - # Process anchor and image tags. Images must come first, - # because ![foo][f] looks like an anchor. - "doImages" => 10, - "doAnchors" => 20, - - # Make links out of things like `<http://example.com/>` - # Must come after doAnchors, because you can use < and > - # delimiters in inline links like [this](<url>). - "doAutoLinks" => 30, - "encodeAmpsAndAngles" => 40, - - "doItalicsAndBold" => 50, - "doHardBreaks" => 60, - ); - - function runSpanGamut($text) { - # - # Run span gamut tranformations. - # - foreach ($this->span_gamut as $method => $priority) { - $text = $this->$method($text); - } - - return $text; - } - - - function doHardBreaks($text) { - # Do hard breaks: - return preg_replace_callback('/ {2,}\n/', - array(&$this, '_doHardBreaks_callback'), $text); - } - function _doHardBreaks_callback($matches) { - return $this->hashPart("<br$this->empty_element_suffix\n"); - } - - - function doAnchors($text) { - # - # Turn Markdown link shortcuts into XHTML <a> tags. - # - if ($this->in_anchor) return $text; - $this->in_anchor = true; - - # - # First, handle reference-style links: [link text] [id] - # - $text = preg_replace_callback('{ - ( # wrap whole match in $1 - \[ - ('.$this->nested_brackets_re.') # link text = $2 - \] - - [ ]? # one optional space - (?:\n[ ]*)? # one optional newline followed by spaces - - \[ - (.*?) # id = $3 - \] - ) - }xs', - array(&$this, '_doAnchors_reference_callback'), $text); - - # - # Next, inline-style links: [link text](url "optional title") - # - $text = preg_replace_callback('{ - ( # wrap whole match in $1 - \[ - ('.$this->nested_brackets_re.') # link text = $2 - \] - \( # literal paren - [ \n]* - (?: - <(.+?)> # href = $3 - | - ('.$this->nested_url_parenthesis_re.') # href = $4 - ) - [ \n]* - ( # $5 - ([\'"]) # quote char = $6 - (.*?) # Title = $7 - \6 # matching quote - [ \n]* # ignore any spaces/tabs between closing quote and ) - )? # title is optional - \) - ) - }xs', - array(&$this, '_doAnchors_inline_callback'), $text); - - # - # Last, handle reference-style shortcuts: [link text] - # These must come last in case you've also got [link text][1] - # or [link text](/foo) - # - $text = preg_replace_callback('{ - ( # wrap whole match in $1 - \[ - ([^\[\]]+) # link text = $2; can\'t contain [ or ] - \] - ) - }xs', - array(&$this, '_doAnchors_reference_callback'), $text); - - $this->in_anchor = false; - return $text; - } - function _doAnchors_reference_callback($matches) { - $whole_match = $matches[1]; - $link_text = $matches[2]; - $link_id =& $matches[3]; - - if ($link_id == "") { - # for shortcut links like [this][] or [this]. - $link_id = $link_text; - } - - # lower-case and turn embedded newlines into spaces - $link_id = strtolower($link_id); - $link_id = preg_replace('{[ ]?\n}', ' ', $link_id); - - if (isset($this->urls[$link_id])) { - $url = $this->urls[$link_id]; - $url = $this->encodeAttribute($url); - - $result = "<a href=\"$url\""; - if ( isset( $this->titles[$link_id] ) ) { - $title = $this->titles[$link_id]; - $title = $this->encodeAttribute($title); - $result .= " title=\"$title\""; - } - - $link_text = $this->runSpanGamut($link_text); - $result .= ">$link_text</a>"; - $result = $this->hashPart($result); - } - else { - $result = $whole_match; - } - return $result; - } - function _doAnchors_inline_callback($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); - - $result = "<a href=\"$url\""; - if (isset($title)) { - $title = $this->encodeAttribute($title); - $result .= " title=\"$title\""; - } - - $link_text = $this->runSpanGamut($link_text); - $result .= ">$link_text</a>"; - - return $this->hashPart($result); - } - - - function doImages($text) { - # - # Turn Markdown image shortcuts into <img> tags. - # - # - # First, handle reference-style labeled images: ![alt text][id] - # - $text = preg_replace_callback('{ - ( # wrap whole match in $1 - !\[ - ('.$this->nested_brackets_re.') # alt text = $2 - \] - - [ ]? # one optional space - (?:\n[ ]*)? # one optional newline followed by spaces - - \[ - (.*?) # id = $3 - \] - - ) - }xs', - array(&$this, '_doImages_reference_callback'), $text); - - # - # Next, handle inline images:  - # Don't forget: encode * and _ - # - $text = preg_replace_callback('{ - ( # wrap whole match in $1 - !\[ - ('.$this->nested_brackets_re.') # alt text = $2 - \] - \s? # One optional whitespace character - \( # literal paren - [ \n]* - (?: - <(\S*)> # src url = $3 - | - ('.$this->nested_url_parenthesis_re.') # src url = $4 - ) - [ \n]* - ( # $5 - ([\'"]) # quote char = $6 - (.*?) # title = $7 - \6 # matching quote - [ \n]* - )? # title is optional - \) - ) - }xs', - array(&$this, '_doImages_inline_callback'), $text); - - return $text; - } - function _doImages_reference_callback($matches) { - $whole_match = $matches[1]; - $alt_text = $matches[2]; - $link_id = strtolower($matches[3]); - - if ($link_id == "") { - $link_id = strtolower($alt_text); # for shortcut links like ![this][]. - } - - $alt_text = $this->encodeAttribute($alt_text); - if (isset($this->urls[$link_id])) { - $url = $this->encodeAttribute($this->urls[$link_id]); - $result = "<img src=\"$url\" alt=\"$alt_text\""; - if (isset($this->titles[$link_id])) { - $title = $this->titles[$link_id]; - $title = $this->encodeAttribute($title); - $result .= " title=\"$title\""; - } - $result .= $this->empty_element_suffix; - $result = $this->hashPart($result); - } - else { - # If there's no such link ID, leave intact: - $result = $whole_match; - } - - return $result; - } - function _doImages_inline_callback($matches) { - $whole_match = $matches[1]; - $alt_text = $matches[2]; - $url = $matches[3] == '' ? $matches[4] : $matches[3]; - $title =& $matches[7]; - - $alt_text = $this->encodeAttribute($alt_text); - $url = $this->encodeAttribute($url); - $result = "<img src=\"$url\" alt=\"$alt_text\""; - if (isset($title)) { - $title = $this->encodeAttribute($title); - $result .= " title=\"$title\""; # $title already quoted - } - $result .= $this->empty_element_suffix; - - return $this->hashPart($result); - } - - - function doHeaders($text) { - # Setext-style headers: - # Header 1 - # ======== - # - # Header 2 - # -------- - # - $text = preg_replace_callback('{ ^(.+?)[ ]*\n(=+|-+)[ ]*\n+ }mx', - array(&$this, '_doHeaders_callback_setext'), $text); - - # atx-style headers: - # # Header 1 - # ## Header 2 - # ## Header 2 with closing hashes ## - # ... - # ###### Header 6 - # - $text = preg_replace_callback('{ - ^(\#{1,6}) # $1 = string of #\'s - [ ]* - (.+?) # $2 = Header text - [ ]* - \#* # optional closing #\'s (not counted) - \n+ - }xm', - array(&$this, '_doHeaders_callback_atx'), $text); - - return $text; - } - function _doHeaders_callback_setext($matches) { - # Terrible hack to check we haven't found an empty list item. - if ($matches[2] == '-' && preg_match('{^-(?: |$)}', $matches[1])) - return $matches[0]; - - $level = $matches[2]{0} == '=' ? 1 : 2; - $block = "<h$level>".$this->runSpanGamut($matches[1])."</h$level>"; - return "\n" . $this->hashBlock($block) . "\n\n"; - } - function _doHeaders_callback_atx($matches) { - $level = strlen($matches[1]); - $block = "<h$level>".$this->runSpanGamut($matches[2])."</h$level>"; - return "\n" . $this->hashBlock($block) . "\n\n"; - } - - - function doLists($text) { - # - # Form HTML ordered (numbered) and unordered (bulleted) lists. - # - $less_than_tab = $this->tab_width - 1; - - # Re-usable patterns to match list item bullets and number markers: - $marker_ul_re = '[*+-]'; - $marker_ol_re = '\d+[\.]'; - $marker_any_re = "(?:$marker_ul_re|$marker_ol_re)"; - - $markers_relist = array( - $marker_ul_re => $marker_ol_re, - $marker_ol_re => $marker_ul_re, - ); - - foreach ($markers_relist as $marker_re => $other_marker_re) { - # Re-usable pattern to match any entirel ul or ol list: - $whole_list_re = ' - ( # $1 = whole list - ( # $2 - ([ ]{0,'.$less_than_tab.'}) # $3 = number of spaces - ('.$marker_re.') # $4 = first list item marker - [ ]+ - ) - (?s:.+?) - ( # $5 - \z - | - \n{2,} - (?=\S) - (?! # Negative lookahead for another list item marker - [ ]* - '.$marker_re.'[ ]+ - ) - | - (?= # Lookahead for another kind of list - \n - \3 # Must have the same indentation - '.$other_marker_re.'[ ]+ - ) - ) - ) - '; // mx - - # We use a different prefix before nested lists than top-level lists. - # See extended comment in _ProcessListItems(). - - if ($this->list_level) { - $text = preg_replace_callback('{ - ^ - '.$whole_list_re.' - }mx', - array(&$this, '_doLists_callback'), $text); - } - else { - $text = preg_replace_callback('{ - (?:(?<=\n)\n|\A\n?) # Must eat the newline - '.$whole_list_re.' - }mx', - array(&$this, '_doLists_callback'), $text); - } - } - - return $text; - } - function _doLists_callback($matches) { - # Re-usable patterns to match list item bullets and number markers: - $marker_ul_re = '[*+-]'; - $marker_ol_re = '\d+[\.]'; - $marker_any_re = "(?:$marker_ul_re|$marker_ol_re)"; - - $list = $matches[1]; - $list_type = preg_match("/$marker_ul_re/", $matches[4]) ? "ul" : "ol"; - - $marker_any_re = ( $list_type == "ul" ? $marker_ul_re : $marker_ol_re ); - - $list .= "\n"; - $result = $this->processListItems($list, $marker_any_re); - - $result = $this->hashBlock("<$list_type>\n" . $result . "</$list_type>"); - return "\n". $result ."\n\n"; - } - - var $list_level = 0; - - function processListItems($list_str, $marker_any_re) { - # - # Process the contents of a single ordered or unordered list, splitting it - # into individual list items. - # - # The $this->list_level global keeps track of when we're inside a list. - # Each time we enter a list, we increment it; when we leave a list, - # we decrement. If it's zero, we're not in a list anymore. - # - # We do this because when we're not inside a list, we want to treat - # something like this: - # - # I recommend upgrading to version - # 8. Oops, now this line is treated - # as a sub-list. - # - # As a single paragraph, despite the fact that the second line starts - # with a digit-period-space sequence. - # - # Whereas when we're inside a list (or sub-list), that line will be - # treated as the start of a sub-list. What a kludge, huh? This is - # an aspect of Markdown's syntax that's hard to parse perfectly - # without resorting to mind-reading. Perhaps the solution is to - # change the syntax rules such that sub-lists must start with a - # starting cardinal number; e.g. "1." or "a.". - - $this->list_level++; - - # trim trailing blank lines: - $list_str = preg_replace("/\n{2,}\\z/", "\n", $list_str); - - $list_str = preg_replace_callback('{ - (\n)? # leading line = $1 - (^[ ]*) # leading whitespace = $2 - ('.$marker_any_re.' # list marker and space = $3 - (?:[ ]+|(?=\n)) # space only required if item is not empty - ) - ((?s:.*?)) # list item text = $4 - (?:(\n+(?=\n))|\n) # tailing blank line = $5 - (?= \n* (\z | \2 ('.$marker_any_re.') (?:[ ]+|(?=\n)))) - }xm', - array(&$this, '_processListItems_callback'), $list_str); - - $this->list_level--; - return $list_str; - } - function _processListItems_callback($matches) { - $item = $matches[4]; - $leading_line =& $matches[1]; - $leading_space =& $matches[2]; - $marker_space = $matches[3]; - $tailing_blank_line =& $matches[5]; - - if ($leading_line || $tailing_blank_line || - preg_match('/\n{2,}/', $item)) - { - # Replace marker with the appropriate whitespace indentation - $item = $leading_space . str_repeat(' ', strlen($marker_space)) . $item; - $item = $this->runBlockGamut($this->outdent($item)."\n"); - } - else { - # Recursion for sub-lists: - $item = $this->doLists($this->outdent($item)); - $item = preg_replace('/\n+$/', '', $item); - $item = $this->runSpanGamut($item); - } - - return "<li>" . $item . "</li>\n"; - } - - - function doCodeBlocks($text) { - # - # Process Markdown `<pre><code>` blocks. - # - $text = preg_replace_callback('{ - (?:\n\n|\A\n?) - ( # $1 = the code block -- one or more lines, starting with a space/tab - (?> - [ ]{'.$this->tab_width.'} # Lines must start with a tab or a tab-width of spaces - .*\n+ - )+ - ) - ((?=^[ ]{0,'.$this->tab_width.'}\S)|\Z) # Lookahead for non-space at line-start, or end of doc - }xm', - array(&$this, '_doCodeBlocks_callback'), $text); - - return $text; - } - function _doCodeBlocks_callback($matches) { - $codeblock = $matches[1]; - - $codeblock = $this->outdent($codeblock); - $codeblock = htmlspecialchars($codeblock, ENT_NOQUOTES); - - # trim leading newlines and trailing newlines - $codeblock = preg_replace('/\A\n+|\n+\z/', '', $codeblock); - - $codeblock = "<pre><code>$codeblock\n</code></pre>"; - return "\n\n".$this->hashBlock($codeblock)."\n\n"; - } - - - function makeCodeSpan($code) { - # - # Create a code span markup for $code. Called from handleSpanToken. - # - $code = htmlspecialchars(trim($code), ENT_NOQUOTES); - return $this->hashPart("<code class=\"inline-code\">$code</code>"); - } - - - var $em_relist = array( - '' => '(?:(?<!\*)\*(?!\*)|(?<!_)_(?!_))(?=\S|$)(?![\.,:;]\s)', - '*' => '(?<=\S|^)(?<!\*)\*(?!\*)', - '_' => '(?<=\S|^)(?<!_)_(?!_)', - ); - var $strong_relist = array( - '' => '(?:(?<!\*)\*\*(?!\*)|(?<!_)__(?!_))(?=\S|$)(?![\.,:;]\s)', - '**' => '(?<=\S|^)(?<!\*)\*\*(?!\*)', - '__' => '(?<=\S|^)(?<!_)__(?!_)', - ); - var $em_strong_relist = array( - '' => '(?:(?<!\*)\*\*\*(?!\*)|(?<!_)___(?!_))(?=\S|$)(?![\.,:;]\s)', - '***' => '(?<=\S|^)(?<!\*)\*\*\*(?!\*)', - '___' => '(?<=\S|^)(?<!_)___(?!_)', - ); - var $em_strong_prepared_relist; - - function prepareItalicsAndBold() { - # - # Prepare regular expressions for searching emphasis tokens in any - # context. - # - foreach ($this->em_relist as $em => $em_re) { - foreach ($this->strong_relist as $strong => $strong_re) { - # Construct list of allowed token expressions. - $token_relist = array(); - if (isset($this->em_strong_relist["$em$strong"])) { - $token_relist[] = $this->em_strong_relist["$em$strong"]; - } - $token_relist[] = $em_re; - $token_relist[] = $strong_re; - - # Construct master expression from list. - $token_re = '{('. implode('|', $token_relist) .')}'; - $this->em_strong_prepared_relist["$em$strong"] = $token_re; - } - } - } - - function doItalicsAndBold($text) { - $token_stack = array(''); - $text_stack = array(''); - $em = ''; - $strong = ''; - $tree_char_em = false; - - while (1) { - # - # Get prepared regular expression for seraching emphasis tokens - # in current context. - # - $token_re = $this->em_strong_prepared_relist["$em$strong"]; - - # - # Each loop iteration search for the next emphasis token. - # Each token is then passed to handleSpanToken. - # - $parts = preg_split($token_re, $text, 2, PREG_SPLIT_DELIM_CAPTURE); - $text_stack[0] .= $parts[0]; - $token =& $parts[1]; - $text =& $parts[2]; - - if (empty($token)) { - # Reached end of text span: empty stack without emitting. - # any more emphasis. - while ($token_stack[0]) { - $text_stack[1] .= array_shift($token_stack); - $text_stack[0] .= array_shift($text_stack); - } - break; - } - - $token_len = strlen($token); - if ($tree_char_em) { - # Reached closing marker while inside a three-char emphasis. - if ($token_len == 3) { - # Three-char closing marker, close em and strong. - array_shift($token_stack); - $span = array_shift($text_stack); - $span = $this->runSpanGamut($span); - $span = "<strong><em>$span</em></strong>"; - $text_stack[0] .= $this->hashPart($span); - $em = ''; - $strong = ''; - } else { - # Other closing marker: close one em or strong and - # change current token state to match the other - $token_stack[0] = str_repeat($token{0}, 3-$token_len); - $tag = $token_len == 2 ? "strong" : "em"; - $span = $text_stack[0]; - $span = $this->runSpanGamut($span); - $span = "<$tag>$span</$tag>"; - $text_stack[0] = $this->hashPart($span); - $$tag = ''; # $$tag stands for $em or $strong - } - $tree_char_em = false; - } else if ($token_len == 3) { - if ($em) { - # Reached closing marker for both em and strong. - # Closing strong marker: - for ($i = 0; $i < 2; ++$i) { - $shifted_token = array_shift($token_stack); - $tag = strlen($shifted_token) == 2 ? "strong" : "em"; - $span = array_shift($text_stack); - $span = $this->runSpanGamut($span); - $span = "<$tag>$span</$tag>"; - $text_stack[0] .= $this->hashPart($span); - $$tag = ''; # $$tag stands for $em or $strong - } - } else { - # Reached opening three-char emphasis marker. Push on token - # stack; will be handled by the special condition above. - $em = $token{0}; - $strong = "$em$em"; - array_unshift($token_stack, $token); - array_unshift($text_stack, ''); - $tree_char_em = true; - } - } else if ($token_len == 2) { - if ($strong) { - # Unwind any dangling emphasis marker: - if (strlen($token_stack[0]) == 1) { - $text_stack[1] .= array_shift($token_stack); - $text_stack[0] .= array_shift($text_stack); - } - # Closing strong marker: - array_shift($token_stack); - $span = array_shift($text_stack); - $span = $this->runSpanGamut($span); - $span = "<strong>$span</strong>"; - $text_stack[0] .= $this->hashPart($span); - $strong = ''; - } else { - array_unshift($token_stack, $token); - array_unshift($text_stack, ''); - $strong = $token; - } - } else { - # Here $token_len == 1 - if ($em) { - if (strlen($token_stack[0]) == 1) { - # Closing emphasis marker: - array_shift($token_stack); - $span = array_shift($text_stack); - $span = $this->runSpanGamut($span); - $span = "<em>$span</em>"; - $text_stack[0] .= $this->hashPart($span); - $em = ''; - } else { - $text_stack[0] .= $token; - } - } else { - array_unshift($token_stack, $token); - array_unshift($text_stack, ''); - $em = $token; - } - } - } - return $text_stack[0]; - } - - - function doBlockQuotes($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 <pre> content, - # so we need to fix that: - $bq = preg_replace_callback('{(\s*<pre>.+?</pre>)}sx', - array(&$this, '_doBlockQuotes_callback2'), $bq); - - return "\n". $this->hashBlock("<blockquote>\n$bq\n</blockquote>")."\n\n"; - } - function _doBlockQuotes_callback2($matches) { - $pre = $matches[1]; - $pre = preg_replace('/^ /m', '', $pre); - return $pre; - } - - - function formParagraphs($text) { - # - # Params: - # $text - string to process with html <p> tags - # - # Strip leading and trailing lines: - $text = preg_replace('/\A\n+|\n+\z/', '', $text); - - $grafs = preg_split('/\n{2,}/', $text, -1, PREG_SPLIT_NO_EMPTY); - - # - # Wrap <p> tags and unhashify HTML blocks - # - foreach ($grafs as $key => $value) { - if (!preg_match('/^B\x1A[0-9]+B$/', $value)) { - # Is a paragraph. - $value = $this->runSpanGamut($value); - $value = preg_replace('/^([ ]*)/', "<p>", $value); - $value .= "</p>"; - $grafs[$key] = $this->unhash($value); - } - else { - # Is a block. - # Modify elements of @grafs in-place... - $graf = $value; - $block = $this->html_hashes[$graf]; - $graf = $block; -// if (preg_match('{ -// \A -// ( # $1 = <div> tag -// <div \s+ -// [^>]* -// \b -// markdown\s*=\s* ([\'"]) # $2 = attr quote char -// 1 -// \2 -// [^>]* -// > -// ) -// ( # $3 = contents -// .* -// ) -// (</div>) # $4 = closing tag -// \z -// }xs', $block, $matches)) -// { -// list(, $div_open, , $div_content, $div_close) = $matches; -// -// # We can't call Markdown(), because that resets the hash; -// # that initialization code should be pulled into its own sub, though. -// $div_content = $this->hashHTMLBlocks($div_content); -// -// # Run document gamut methods on the content. -// foreach ($this->document_gamut as $method => $priority) { -// $div_content = $this->$method($div_content); -// } -// -// $div_open = preg_replace( -// '{\smarkdown\s*=\s*([\'"]).+?\1}', '', $div_open); -// -// $graf = $div_open . "\n" . $div_content . "\n" . $div_close; -// } - $grafs[$key] = $graf; - } - } - - return implode("\n\n", $grafs); - } - - - function encodeAttribute($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: <http://bumppo.net/projects/amputator/> - $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: <address@domain.foo> - $text = preg_replace_callback('{ - < - (?:mailto:)? - ( - (?: - [-!#$%&\'*+/=?^_`.{|}~\w\x80-\xFF]+ - | - ".*?" - ) - \@ - (?: - [-a-z0-9\x80-\xFF]+(\.[-a-z0-9\x80-\xFF]+)*\.[a-z]+ - | - \[[\d.a-fA-F:]+\] # IPv4 & IPv6 - ) - ) - > - }xi', - array(&$this, '_doAutoLinks_email_callback'), $text); - - return $text; - } - function _doAutoLinks_url_callback($matches) { - $url = $this->encodeAttribute($matches[1]); - $link = "<a href=\"$url\">$url</a>"; - 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.: - # - # <p><a href="mailto:foo - # @example.co - # m">foo@exampl - # e.com</a></p> - # - # Based by a filter by Matthew Wickline, posted to BBEdit-Talk. - # With some optimizations by Milian Wolff. - # - $addr = "mailto:" . $addr; - $chars = preg_split('/(?<!^)(?!$)/', $addr); - $seed = (int)abs(crc32($addr) / strlen($addr)); # Deterministic seed. - - foreach ($chars as $key => $char) { - $ord = ord($char); - # Ignore non-ascii chars. - if ($ord < 128) { - $r = ($seed * (1 + $key)) % 100; # Pseudo-random function. - # roughly 10% raw, 45% hex, 45% dec - # '@' *must* be encoded. I insist. - if ($r > 90 && $char != '@') /* do nothing */; - else if ($r < 45) $chars[$key] = '&#x'.dechex($ord).';'; - else $chars[$key] = '&#'.$ord.';'; - } - } - - $addr = implode('', $chars); - $text = implode('', array_slice($chars, 7)); # text without `mailto:` - $addr = "<a href=\"$addr\">$text</a>"; - - 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.' - | - (?<![`\\\\]) - `+ # code span marker - '.( $this->no_markup ? '' : ' - | - <!-- .*? --> # comment - | - <\?.*?\?> | <%.*?%> # processing instruction - | - <[/!$]?[-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; - - # 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 .= ':|'; - - # 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 <p>s around - # "paragraphs" that are wrapped in non-block-level tags, such as anchors, - # phrase emphasis, and spans. The list of tags we're looking for is - # hard-coded. - # - # This works by calling _HashHTMLBlocks_InMarkdown, which then calls - # _HashHTMLBlocks_InHTML when it encounter block tags. When the markdown="1" - # attribute is found 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: - # - # <div> - # <div markdown="1"> - # Hello World. <-- Is this a Markdown code block or text? - # </div> <-- Is this a Markdown code block or a real tag? - # <div> - # - # If you don't like this, just don't indent the tag on which - # you apply the markdown="1" attribute. - # - # * If $enclosing_tag_re is not empty, stops at the first unmatched closing - # tag with that name. Nested tags supported. - # - # * If $span is true, text inside must treated as span. So any double - # newline will be replaced by a single newline so that it does not create - # paragraphs. - # - # Returns an array of that form: ( processed text , remaining text ) - # - if ($text === '') return array('', ''); - - # Regex to check for the presense of newlines around a block tag. - $newline_before_re = '/(?:^\n?|\n\n)*$/'; - $newline_after_re = - '{ - ^ # Start of text following the tag. - (?>[ ]*<!--.*?-->)? # Optional comment. - [ ]*\n # Must be followed by newline. - }xs'; - - # Regex to match any tag. - $block_tag_re = - '{ - ( # $2: Capture hole tag. - </? # Any opening or closing tag. - (?> # Tag name. - '.$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\[.*?\]\]> # CData Block - | - # Code span marker - `+ - '. ( !$span ? ' # If not in span. - | - # Indented code block - (?: ^[ ]*\n | ^ | \n[ ]*\n ) - [ ]{'.($indent+4).'}[^\n]* \n - (?> - (?: [ ]{'.($indent+4).'}[^\n]* | [ ]* ) \n - )* - | - # Fenced code block marker - (?> ^ | \n ) - [ ]{0,'.($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))*?(?<!`)'.$tag_re.'(?!`)}', - $text, $matches)) - { - # End marker found: pass text unchanged until marker. - $parsed .= $tag . $matches[0]; - $text = substr($text, strlen($matches[0])); - } - else { - # Unmatched marker: just skip it. - $parsed .= $tag; - } - } - # - # Check for: Fenced code block marker. - # - else if (preg_match('{^\n?[ ]{0,'.($indent+3).'}~}', $tag)) { - # Fenced code block marker: find matching end marker. - $tag_re = preg_quote(trim($tag)); - if (preg_match('{^(?>.*\n)+?[ ]{0,'.($indent).'}'.$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 .= $tag; - } - } - # - # Check for: Indented code block. - # - else if ($tag{0} == "\n" || $tag{0} == " ") { - # Indented code block: pass it unchanged, will be handled - # later. - $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\[.*?\]\]> # CData Block - ) - }xs'; - - $original_text = $text; # Save original text in case of faliure. - - $depth = 0; # Current depth inside the tag tree. - $block_text = ""; # Temporary text holder for current text. - $parsed = ""; # Parsed text that will be returned. - - # - # Get the name of the starting tag. - # (This pattern makes $base_tag_name_re safe without quoting.) - # - if (preg_match('/^<([\w:$]*)\b/', $text, $matches)) - $base_tag_name_re = $matches[1]; - - # - # Loop through every tag until we find the corresponding closing tag. - # - do { - # - # Split the text using the first $tag_match pattern found. - # Text before pattern will be first in the array, text after - # pattern will be at the end, and between will be any catches made - # by the pattern. - # - $parts = preg_split($tag_re, $text, 2, PREG_SPLIT_DELIM_CAPTURE); - - if (count($parts) < 3) { - # - # End of $text reached with unbalenced tag(s). - # In that case, we return original text unchanged and pass the - # first character as filtered to prevent an infinite loop in the - # parent function. - # - return array($original_text{0}, substr($original_text, 1)); - } - - $block_text .= $parts[0]; # Text before current tag. - $tag = $parts[1]; # Tag to handle. - $text = $parts[2]; # Remaining text after current tag. - - # - # Check for: Auto-close tag (like <hr/>) - # Comments and Processing Instructions. - # - if (preg_match('{^</?(?:'.$this->auto_close_tags_re.')\b}', $tag) || - $tag{1} == '!' || $tag{1} == '?') - { - # Just add the tag to the block as if it was text. - $block_text .= $tag; - } - else { - # - # Increase/decrease nested tag count. Only do so if - # the tag's name match base tag's. - # - if (preg_match('{^</?'.$base_tag_name_re.'\b}', $tag)) { - if ($tag{1} == '/') $depth--; - else if ($tag{strlen($tag)-2} != '/') $depth++; - } - - # - # Check for `markdown="1"` attribute and handle it. - # - if ($md_attr && - preg_match($markdown_attr_re, $tag, $attr_m) && - preg_match('/^1|block|span$/', $attr_m[2] . $attr_m[3])) - { - # Remove `markdown` attribute from opening tag. - $tag = preg_replace($markdown_attr_re, '', $tag); - - # Check if text inside this tag must be parsed in span mode. - $this->mode = $attr_m[2] . $attr_m[3]; - $span_mode = $this->mode == 'span' || $this->mode != 'block' && - preg_match('{^<(?:'.$this->contain_span_tags_re.')\b}', $tag); - - # Calculate indent before tag. - if (preg_match('/(?:^|\n)( *?)(?! ).*?$/', $block_text, $matches)) { - $strlen = $this->utf8_strlen; - $indent = $strlen($matches[1], 'UTF-8'); - } else { - $indent = 0; - } - - # End preceding block with this tag. - $block_text .= $tag; - $parsed .= $this->$hash_method($block_text); - - # Get enclosing tag name for the ParseMarkdown function. - # (This pattern makes $tag_name_re safe without quoting.) - preg_match('/^<([\w:$]*)\b/', $tag, $matches); - $tag_name_re = $matches[1]; - - # Parse the content using the HTML-in-Markdown parser. - list ($block_text, $text) - = $this->_hashHTMLBlocks_inMarkdown($text, $indent, - $tag_name_re, $span_mode); - - # Outdent markdown text. - if ($indent > 0) { - $block_text = preg_replace("/^[ ]{1,$indent}/m", "", - $block_text); - } - - # Append tag content to parsed text. - if (!$span_mode) $parsed .= "\n\n$block_text\n\n"; - else $parsed .= "$block_text"; - - # Start over 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 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]); - $block = "<h$level$attr>".$this->runSpanGamut($matches[1])."</h$level>"; - return "\n" . $this->hashBlock($block) . "\n\n"; - } - function _doHeaders_callback_atx($matches) { - $level = strlen($matches[1]); - $attr = $this->_doHeaders_attr($id =& $matches[3]); - $block = "<h$level$attr>".$this->runSpanGamut($matches[2])."</h$level>"; - return "\n" . $this->hashBlock($block) . "\n\n"; - } - - - 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 = "<table>\n"; - $text .= "<thead>\n"; - $text .= "<tr>\n"; - foreach ($headers as $n => $header) - $text .= " <th$attr[$n]>".$this->runSpanGamut(trim($header))."</th>\n"; - $text .= "</tr>\n"; - $text .= "</thead>\n"; - - # Split content by row. - $rows = explode("\n", trim($content, "\n")); - - $text .= "<tbody>\n"; - foreach ($rows as $row) { - # Parsing span elements, including code spans, character escapes, - # and inline HTML tags, so that pipes inside those gets ignored. - $row = $this->parseSpan($row); - - # Split row by cell. - $row_cells = preg_split('/ *[|] */', $row, $col_count); - $row_cells = array_pad($row_cells, $col_count, ''); - - $text .= "<tr>\n"; - foreach ($row_cells as $n => $cell) - $text .= " <td$attr[$n]>".$this->runSpanGamut(trim($cell))."</td>\n"; - $text .= "</tr>\n"; - } - $text .= "</tbody>\n"; - $text .= "</table>"; - - return $this->hashBlock($text) . "\n"; - } - - - 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 = "<dl>\n" . $result . "\n</dl>"; - 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.'} [:][ ] | - <dt> | \z - ) - ) - }xm', - array(&$this, '_processDefListItems_callback_dd'), $list_str); - - return $list_str; - } - function _processDefListItems_callback_dt($matches) { - $terms = explode("\n", trim($matches[1])); - $text = ''; - foreach ($terms as $term) { - $term = $this->runSpanGamut(trim($term)); - $text .= "\n<dt>" . $term . "</dt>"; - } - return $text . "\n"; - } - function _processDefListItems_callback_dd($matches) { - $leading_line = $matches[1]; - $marker_space = $matches[2]; - $def = $matches[3]; - - if ($leading_line || preg_match('/\n{2,}/', $def)) { - # Replace marker with the appropriate whitespace indentation - $def = str_repeat(' ', strlen($marker_space)) . $def; - $def = $this->runBlockGamut($this->outdent($def . "\n\n")); - $def = "\n". $def ."\n"; - } - else { - $def = rtrim($def); - $def = $this->runSpanGamut($this->outdent($def)); - } - - return "\n<dd>" . $def . "</dd>\n"; - } - - - function doFencedCodeBlocks($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); - $codeblock = "<pre><code>$codeblock</code></pre>"; - return "\n\n".$this->hashBlock($codeblock)."\n\n"; - } - function _doFencedCodeBlocks_newlines($matches) { - return str_repeat("<br$this->empty_element_suffix", - strlen($matches[0])); - } - - - # - # Redefining emphasis markers so that emphasis by underscore does not - # work in the middle of a word. - # - var $em_relist = array( - '' => '(?:(?<!\*)\*(?!\*)|(?<![a-zA-Z0-9_])_(?!_))(?=\S|$)(?![\.,:;]\s)', - '*' => '(?<=\S|^)(?<!\*)\*(?!\*)', - '_' => '(?<=\S|^)(?<!_)_(?![a-zA-Z0-9_])', - ); - var $strong_relist = array( - '' => '(?:(?<!\*)\*\*(?!\*)|(?<![a-zA-Z0-9_])__(?!_))(?=\S|$)(?![\.,:;]\s)', - '**' => '(?<=\S|^)(?<!\*)\*\*(?!\*)', - '__' => '(?<=\S|^)(?<!_)__(?![a-zA-Z0-9_])', - ); - var $em_strong_relist = array( - '' => '(?:(?<!\*)\*\*\*(?!\*)|(?<![a-zA-Z0-9_])___(?!_))(?=\S|$)(?![\.,:;]\s)', - '***' => '(?<=\S|^)(?<!\*)\*\*\*(?!\*)', - '___' => '(?<=\S|^)(?<!_)___(?![a-zA-Z0-9_])', - ); - - - function formParagraphs($text) { - # - # Params: - # $text - string to process with html <p> tags - # - # Strip leading and trailing lines: - $text = preg_replace('/\A\n+|\n+\z/', '', $text); - - $grafs = preg_split('/\n{2,}/', $text, -1, PREG_SPLIT_NO_EMPTY); - - # - # Wrap <p> tags and unhashify HTML blocks - # - foreach ($grafs as $key => $value) { - $value = trim($this->runSpanGamut($value)); - - # Check if this should be enclosed in a paragraph. - # Clean tag hashes & block tag hashes are left alone. - $is_p = !preg_match('/^B\x1A[0-9]+B|^C\x1A[0-9]+C$/', $value); - - if ($is_p) { - $value = "<p>$value</p>"; - } - $grafs[$key] = $value; - } - - # Join grafs in one text, then unhash HTML tags. - $text = implode("\n\n", $grafs); - - # Finish by removing any tag hashes still present in $text. - $text = $this->unhash($text); - - return $text; - } - - - ### Footnotes - - function stripFootnotes($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 .= "<div class=\"footnotes\">\n"; - $text .= "<hr". $this->empty_element_suffix ."\n"; - $text .= "<ol>\n\n"; - - $attr = " rev=\"footnote\""; - if ($this->fn_backlink_class != "") { - $class = $this->fn_backlink_class; - $class = $this->encodeAttribute($class); - $attr .= " class=\"$class\""; - } - if ($this->fn_backlink_title != "") { - $title = $this->fn_backlink_title; - $title = $this->encodeAttribute($title); - $attr .= " title=\"$title\""; - } - $num = 0; - - while (!empty($this->footnotes_ordered)) { - $footnote = reset($this->footnotes_ordered); - $note_id = key($this->footnotes_ordered); - unset($this->footnotes_ordered[$note_id]); - - $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. - $backlink = "<a href=\"#fnref:$note_id\"$attr>↩</a>"; - if (preg_match('{</p>$}', $footnote)) { - $footnote = substr($footnote, 0, -4) . " $backlink</p>"; - } else { - $footnote .= "\n\n<p>$backlink</p>"; - } - - $text .= "<li id=\"fn:$note_id\">\n"; - $text .= $footnote . "\n"; - $text .= "</li>\n\n"; - } - - $text .= "</ol>\n"; - $text .= "</div>"; - } - return $text; - } - function _appendFootnotes_callback($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 - "<sup id=\"fnref:$node_id\">". - "<a href=\"#fn:$node_id\"$attr>$num</a>". - "</sup>"; - } - - 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 <abbr> elements. - # - if ($this->abbr_word_re) { - // cannot use the /x modifier because abbr_word_re may - // contain significant spaces: - $text = preg_replace_callback('{'. - '(?<![\w\x1A])'. - '(?:'.$this->abbr_word_re.')'. - '(?![\w\x1A])'. - '}', - array(&$this, '_doAbbreviations_callback'), $text); - } - return $text; - } - function _doAbbreviations_callback($matches) { - $abbr = $matches[0]; - if (isset($this->abbr_desciptions[$abbr])) { - $desc = $this->abbr_desciptions[$abbr]; - if (empty($desc)) { - return $this->hashPart("<abbr>$abbr</abbr>"); - } else { - $desc = $this->encodeAttribute($desc); - return $this->hashPart("<abbr title=\"$desc\">$abbr</abbr>"); - } - } else { - return $matches[0]; - } - } - -} - - -/* - -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 <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. - - -Copyright and License ---------------------- - -PHP Markdown & Extra -Copyright (c) 2004-2009 Michel Fortin -<http://michelf.com/> -All rights reserved. - -Based on Markdown -Copyright (c) 2003-2006 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. - -*/ -?>
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Here is a sample; alter the names: - - Yoyodyne, Inc., hereby disclaims all copyright interest in the - library `Frob' (a library for tweaking knobs) written by James Random Hacker. - - <signature of Ty Coon>, 1 April 1990 - Ty Coon, President of Vice - -That's all there is to it! - - diff --git a/library/markdownify/TODO b/library/markdownify/TODO deleted file mode 100644 index 06ec8508b..000000000 --- a/library/markdownify/TODO +++ /dev/null @@ -1,29 +0,0 @@ -Markdownify -=========== -* handle non-markdownifiable lists (i.e. `<ul><li id="foobar">asdf</li></ul>`) -* organize methods better (i.e. flushlinebreaks & setlinebreaks close to each other) -* take a look at function names etc. -* is the new (in rev. 93) lastclosedtag property needed? -* word wrapping (some work is done but it's still very buggy) - - -Markdownify Extra -================= - -* handle table alignment with KEEP_HTML=false -* handle tables without headings when KEEP_HTML=false is set -* handle Markdown inside non-markdownable tags - - -Implementation Thoughts -======================= -* non-markdownifiable lists and markdown inside non-markdownable tags as well as the current - table implementation could be rewritten by using a rollback mechanism. - - example: - - <ul><li>asdf</li><li id="foobar">asdf</li></ul> - - we come to `<ul>`, know that this might fail and create a snapshot of our current parser - we keep on parsing and when we reach `<li id="foobar">` we gotta rollback and keep this - list in HTML format. diff --git a/library/markdownify/example.php b/library/markdownify/example.php deleted file mode 100644 index ef86dca83..000000000 --- a/library/markdownify/example.php +++ /dev/null @@ -1,51 +0,0 @@ -<?php - error_reporting(E_ALL); - if (!empty($_POST['input'])) { - include 'markdownify_extra.php'; - if (!isset($_POST['leap'])) { - $leap = MDFY_LINKS_EACH_PARAGRAPH; - } else { - $leap = $_POST['leap']; - } - - if (!isset($_POST['keepHTML'])) { - $keephtml = MDFY_KEEPHTML; - } else { - $keephtml = $_POST['keepHTML']; - } - if (!empty($_POST['extra'])) { - $md = new Markdownify_Extra($leap, MDFY_BODYWIDTH, $keephtml); - } else { - $md = new Markdownify($leap, MDFY_BODYWIDTH, $keephtml); - } - if (ini_get('magic_quotes_gpc')) { - $_POST['input'] = stripslashes($_POST['input']); - } - $output = $md->parseString($_POST['input']); - } else { - $_POST['input'] = ''; - } -?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> -<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US"> - <head> - <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> - <title>HTML to Markdown Converter</title> - </head> - <body> - <?php if (empty($_POST['input'])): ?> - <form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post"> - <fieldset> - <legend>HTML Input</legend> - <textarea style="width:100%;" cols="85" rows="40" name="input"><?php echo htmlspecialchars($_POST['input'], ENT_NOQUOTES, 'UTF-8'); ?></textarea> - </fieldset> - <label for="extra">Markdownify Extra: <input name="extra" checked="checked" id="extra" type="checkbox" value="1" /></label> - <label for="leap">Links after each block elem: <input name="leap" id="leap" type="checkbox" value="1" /></label> - <label for="keepHTML">keep HTML: <input name="keepHTML" id="keepHTML" type="checkbox" value="1" checked="checked" /></label> - <input type="submit" name="submit" value="submit" /> - </form> - <?php else: ?> - <h1 style="text-align:right;"><a href="<?php echo $_SERVER['PHP_SELF']; ?>">BACK</a></h1> - <pre><?php echo htmlspecialchars($output, ENT_NOQUOTES, 'UTF-8'); ?></pre> - <?php endif; ?> - </body> -</html>
\ No newline at end of file diff --git a/library/markdownify/markdownify.php b/library/markdownify/markdownify.php deleted file mode 100644 index 0d4429a01..000000000 --- a/library/markdownify/markdownify.php +++ /dev/null @@ -1,1197 +0,0 @@ -<?php -/** - * Markdownify converts HTML Markup to [Markdown][1] (by [John Gruber][2]. It - * also supports [Markdown Extra][3] by [Michel Fortin][4] via Markdownify_Extra. - * - * It all started as `html2text.php` - a port of [Aaron Swartz'][5] [`html2text.py`][6] - but - * got a long way since. This is far more than a mere port now! - * Starting with version 2.0.0 this is a complete rewrite and cannot be - * compared to Aaron Swatz' `html2text.py` anylonger. I'm now using a HTML parser - * (see `parsehtml.php` which I also wrote) which makes most of the evil - * RegEx magic go away and additionally it gives a much cleaner class - * structure. Also notably is the fact that I now try to prevent regressions by - * utilizing testcases of Michel Fortin's [MDTest][7]. - * - * [1]: http://daringfireball.com/projects/markdown - * [2]: http://daringfireball.com/ - * [3]: http://www.michelf.com/projects/php-markdown/extra/ - * [4]: http://www.michelf.com/ - * [5]: http://www.aaronsw.com/ - * [6]: http://www.aaronsw.com/2002/html2text/ - * [7]: http://article.gmane.org/gmane.text.markdown.general/2540 - * - * @version 2.0.0 alpha - * @author Milian Wolff (<mail@milianw.de>, <http://milianw.de>) - * @license LGPL, see LICENSE_LGPL.txt and the summary below - * @copyright (C) 2007 Milian Wolff - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** - * HTML Parser, see http://sf.net/projects/parseHTML - */ -require_once dirname(__FILE__).'/parsehtml/parsehtml.php'; - -/** - * default configuration - */ -define('MDFY_LINKS_EACH_PARAGRAPH', false); -define('MDFY_BODYWIDTH', false); -define('MDFY_KEEPHTML', true); - -/** - * HTML to Markdown converter class - */ -class Markdownify { - /** - * html parser object - * - * @var parseHTML - */ - var $parser; - /** - * markdown output - * - * @var string - */ - var $output; - /** - * stack with tags which where not converted to html - * - * @var array<string> - */ - var $notConverted = array(); - /** - * skip conversion to markdown - * - * @var bool - */ - var $skipConversion = false; - /* options */ - /** - * keep html tags which cannot be converted to markdown - * - * @var bool - */ - var $keepHTML = false; - /** - * wrap output, set to 0 to skip wrapping - * - * @var int - */ - var $bodyWidth = 0; - /** - * minimum body width - * - * @var int - */ - var $minBodyWidth = 25; - /** - * display links after each paragraph - * - * @var bool - */ - var $linksAfterEachParagraph = false; - /** - * constructor, set options, setup parser - * - * @param bool $linksAfterEachParagraph wether or not to flush stacked links after each paragraph - * defaults to false - * @param int $bodyWidth wether or not to wrap the output to the given width - * defaults to false - * @param bool $keepHTML wether to keep non markdownable HTML or to discard it - * defaults to true (HTML will be kept) - * @return void - */ - function Markdownify($linksAfterEachParagraph = MDFY_LINKS_EACH_PARAGRAPH, $bodyWidth = MDFY_BODYWIDTH, $keepHTML = MDFY_KEEPHTML) { - $this->linksAfterEachParagraph = $linksAfterEachParagraph; - $this->keepHTML = $keepHTML; - - if ($bodyWidth > $this->minBodyWidth) { - $this->bodyWidth = intval($bodyWidth); - } else { - $this->bodyWidth = false; - } - - $this->parser = new parseHTML; - $this->parser->noTagsInCode = true; - - # we don't have to do this every time - $search = array(); - $replace = array(); - foreach ($this->escapeInText as $s => $r) { - array_push($search, '#(?<!\\\)'.$s.'#U'); - array_push($replace, $r); - } - $this->escapeInText = array( - 'search' => $search, - 'replace' => $replace - ); - } - /** - * parse a HTML string - * - * @param string $html - * @return string markdown formatted - */ - function parseString($html) { - $this->parser->html = $html; - $this->parse(); - return $this->output; - } - /** - * tags with elements which can be handled by markdown - * - * @var array<string> - */ - var $isMarkdownable = array( - 'p' => array(), - 'ul' => array(), - 'ol' => array(), - 'li' => array(), - 'br' => array(), - 'blockquote' => array(), - 'code' => array(), - 'pre' => array(), - 'a' => array( - 'href' => 'required', - 'title' => 'optional', - ), - 'strong' => array(), - 'b' => array(), - 'em' => array(), - 'i' => array(), - 'img' => array( - 'src' => 'required', - 'alt' => 'optional', - 'title' => 'optional', - ), - 'h1' => array(), - 'h2' => array(), - 'h3' => array(), - 'h4' => array(), - 'h5' => array(), - 'h6' => array(), - 'hr' => array(), - ); - /** - * html tags to be ignored (contents will be parsed) - * - * @var array<string> - */ - var $ignore = array( - 'html', - 'body', - ); - /** - * html tags to be dropped (contents will not be parsed!) - * - * @var array<string> - */ - var $drop = array( - 'script', - 'head', - 'style', - 'form', - 'area', - 'object', - 'param', - 'iframe', - ); - /** - * Markdown indents which could be wrapped - * @note: use strings in regex format - * - * @var array<string> - */ - var $wrappableIndents = array( - '\* ', # ul - '\d. ', # ol - '\d\d. ', # ol - '> ', # blockquote - '', # p - ); - /** - * list of chars which have to be escaped in normal text - * @note: use strings in regex format - * - * @var array - * - * TODO: what's with block chars / sequences at the beginning of a block? - */ - var $escapeInText = array( - '([-*_])([ ]{0,2}\1){2,}' => '\\\\$0|', # hr - '\*\*([^*\s]+)\*\*' => '\*\*$1\*\*', # strong - '\*([^*\s]+)\*' => '\*$1\*', # em - '__(?! |_)(.+)(?!<_| )__' => '\_\_$1\_\_', # em - '_(?! |_)(.+)(?!<_| )_' => '\_$1\_', # em - '`(.+)`' => '\`$1\`', # code - '\[(.+)\](\s*\()' => '\[$1\]$2', # links: [text] (url) => [text\] (url) - '\[(.+)\](\s*)\[(.*)\]' => '\[$1\]$2\[$3\]', # links: [text][id] => [text\][id\] - ); - /** - * wether last processed node was a block tag or not - * - * @var bool - */ - var $lastWasBlockTag = false; - /** - * name of last closed tag - * - * @var string - */ - var $lastClosedTag = ''; - /** - * iterate through the nodes and decide what we - * shall do with the current node - * - * @param void - * @return void - */ - function parse() { - $this->output = ''; - # drop tags - $this->parser->html = preg_replace('#<('.implode('|', $this->drop).')[^>]*>.*</\\1>#sU', '', $this->parser->html); - while ($this->parser->nextNode()) { - switch ($this->parser->nodeType) { - case 'doctype': - break; - case 'pi': - case 'comment': - if ($this->keepHTML) { - $this->flushLinebreaks(); - $this->out($this->parser->node); - $this->setLineBreaks(2); - } - # else drop - break; - case 'text': - $this->handleText(); - break; - case 'tag': - if (in_array($this->parser->tagName, $this->ignore)) { - break; - } - if ($this->parser->isStartTag) { - $this->flushLinebreaks(); - } - if ($this->skipConversion) { - $this->isMarkdownable(); # update notConverted - $this->handleTagToText(); - continue; - } - if (!$this->parser->keepWhitespace && $this->parser->isBlockElement && $this->parser->isStartTag) { - $this->parser->html = ltrim($this->parser->html); - } - if ($this->isMarkdownable()) { - if ($this->parser->isBlockElement && $this->parser->isStartTag && !$this->lastWasBlockTag && !empty($this->output)) { - if (!empty($this->buffer)) { - $str =& $this->buffer[count($this->buffer) -1]; - } else { - $str =& $this->output; - } - if (substr($str, -strlen($this->indent)-1) != "\n".$this->indent) { - $str .= "\n".$this->indent; - } - } - $func = 'handleTag_'.$this->parser->tagName; - $this->$func(); - if ($this->linksAfterEachParagraph && $this->parser->isBlockElement && !$this->parser->isStartTag && empty($this->parser->openTags)) { - $this->flushStacked(); - } - if (!$this->parser->isStartTag) { - $this->lastClosedTag = $this->parser->tagName; - } - } else { - $this->handleTagToText(); - $this->lastClosedTag = ''; - } - break; - default: - trigger_error('invalid node type', E_USER_ERROR); - break; - } - $this->lastWasBlockTag = $this->parser->nodeType == 'tag' && $this->parser->isStartTag && $this->parser->isBlockElement; - } - if (!empty($this->buffer)) { - trigger_error('buffer was not flushed, this is a bug. please report!', E_USER_WARNING); - while (!empty($this->buffer)) { - $this->out($this->unbuffer()); - } - } - ### cleanup - $this->output = rtrim(str_replace('&', '&', str_replace('<', '<', str_replace('>', '>', $this->output)))); - # end parsing, flush stacked tags - $this->flushStacked(); - $this->stack = array(); - } - /** - * check if current tag can be converted to Markdown - * - * @param void - * @return bool - */ - function isMarkdownable() { - if (!isset($this->isMarkdownable[$this->parser->tagName])) { - # simply not markdownable - return false; - } - if ($this->parser->isStartTag) { - $return = true; - if ($this->keepHTML) { - $diff = array_diff(array_keys($this->parser->tagAttributes), array_keys($this->isMarkdownable[$this->parser->tagName])); - if (!empty($diff)) { - # non markdownable attributes given - $return = false; - } - } - if ($return) { - foreach ($this->isMarkdownable[$this->parser->tagName] as $attr => $type) { - if ($type == 'required' && !isset($this->parser->tagAttributes[$attr])) { - # required markdown attribute not given - $return = false; - break; - } - } - } - if (!$return) { - array_push($this->notConverted, $this->parser->tagName.'::'.implode('/', $this->parser->openTags)); - } - return $return; - } else { - if (!empty($this->notConverted) && end($this->notConverted) === $this->parser->tagName.'::'.implode('/', $this->parser->openTags)) { - array_pop($this->notConverted); - return false; - } - return true; - } - } - /** - * output all stacked tags - * - * @param void - * @return void - */ - function flushStacked() { - # links - foreach ($this->stack as $tag => $a) { - if (!empty($a)) { - call_user_func(array(&$this, 'flushStacked_'.$tag)); - } - } - } - /** - * output link references (e.g. [1]: http://example.com "title"); - * - * @param void - * @return void - */ - function flushStacked_a() { - $out = false; - foreach ($this->stack['a'] as $k => $tag) { - if (!isset($tag['unstacked'])) { - if (!$out) { - $out = true; - $this->out("\n\n", true); - } else { - $this->out("\n", true); - } - $this->out(' ['.$tag['linkID'].']: '.$tag['href'].(isset($tag['title']) ? ' "'.$tag['title'].'"' : ''), true); - $tag['unstacked'] = true; - $this->stack['a'][$k] = $tag; - } - } - } - /** - * flush enqued linebreaks - * - * @param void - * @return void - */ - function flushLinebreaks() { - if ($this->lineBreaks && !empty($this->output)) { - $this->out(str_repeat("\n".$this->indent, $this->lineBreaks), true); - } - $this->lineBreaks = 0; - } - /** - * handle non Markdownable tags - * - * @param void - * @return void - */ - function handleTagToText() { - if (!$this->keepHTML) { - if (!$this->parser->isStartTag && $this->parser->isBlockElement) { - $this->setLineBreaks(2); - } - } else { - # dont convert to markdown inside this tag - /** TODO: markdown extra **/ - if (!$this->parser->isEmptyTag) { - if ($this->parser->isStartTag) { - if (!$this->skipConversion) { - $this->skipConversion = $this->parser->tagName.'::'.implode('/', $this->parser->openTags); - } - } else { - if ($this->skipConversion == $this->parser->tagName.'::'.implode('/', $this->parser->openTags)) { - $this->skipConversion = false; - } - } - } - - if ($this->parser->isBlockElement) { - if ($this->parser->isStartTag) { - if (in_array($this->parent(), array('ins', 'del'))) { - # looks like ins or del are block elements now - $this->out("\n", true); - $this->indent(' '); - } - if ($this->parser->tagName != 'pre') { - $this->out($this->parser->node."\n".$this->indent); - if (!$this->parser->isEmptyTag) { - $this->indent(' '); - } else { - $this->setLineBreaks(1); - } - $this->parser->html = ltrim($this->parser->html); - } else { - # don't indent inside <pre> tags - $this->out($this->parser->node); - static $indent; - $indent = $this->indent; - $this->indent = ''; - } - } else { - if (!$this->parser->keepWhitespace) { - $this->output = rtrim($this->output); - } - if ($this->parser->tagName != 'pre') { - $this->indent(' '); - $this->out("\n".$this->indent.$this->parser->node); - } else { - # reset indentation - $this->out($this->parser->node); - static $indent; - $this->indent = $indent; - } - - if (in_array($this->parent(), array('ins', 'del'))) { - # ins or del was block element - $this->out("\n"); - $this->indent(' '); - } - if ($this->parser->tagName == 'li') { - $this->setLineBreaks(1); - } else { - $this->setLineBreaks(2); - } - } - } else { - $this->out($this->parser->node); - } - if (in_array($this->parser->tagName, array('code', 'pre'))) { - if ($this->parser->isStartTag) { - $this->buffer(); - } else { - # add stuff so cleanup just reverses this - $this->out(str_replace('<', '&lt;', str_replace('>', '&gt;', $this->unbuffer()))); - } - } - } - } - /** - * handle plain text - * - * @param void - * @return void - */ - function handleText() { - if ($this->hasParent('pre') && strpos($this->parser->node, "\n") !== false) { - $this->parser->node = str_replace("\n", "\n".$this->indent, $this->parser->node); - } - if (!$this->hasParent('code') && !$this->hasParent('pre')) { - # entity decode - $this->parser->node = $this->decode($this->parser->node); - if (!$this->skipConversion) { - # escape some chars in normal Text - $this->parser->node = preg_replace($this->escapeInText['search'], $this->escapeInText['replace'], $this->parser->node); - } - } else { - $this->parser->node = str_replace(array('"', '&apos'), array('"', '\''), $this->parser->node); - } - $this->out($this->parser->node); - $this->lastClosedTag = ''; - } - /** - * handle <em> and <i> tags - * - * @param void - * @return void - */ - function handleTag_em() { - $this->out('*', true); - } - function handleTag_i() { - $this->handleTag_em(); - } - /** - * handle <strong> and <b> tags - * - * @param void - * @return void - */ - function handleTag_strong() { - $this->out('**', true); - } - function handleTag_b() { - $this->handleTag_strong(); - } - /** - * handle <h1> tags - * - * @param void - * @return void - */ - function handleTag_h1() { - $this->handleHeader(1); - } - /** - * handle <h2> tags - * - * @param void - * @return void - */ - function handleTag_h2() { - $this->handleHeader(2); - } - /** - * handle <h3> tags - * - * @param void - * @return void - */ - function handleTag_h3() { - $this->handleHeader(3); - } - /** - * handle <h4> tags - * - * @param void - * @return void - */ - function handleTag_h4() { - $this->handleHeader(4); - } - /** - * handle <h5> tags - * - * @param void - * @return void - */ - function handleTag_h5() { - $this->handleHeader(5); - } - /** - * handle <h6> tags - * - * @param void - * @return void - */ - function handleTag_h6() { - $this->handleHeader(6); - } - /** - * number of line breaks before next inline output - */ - var $lineBreaks = 0; - /** - * handle header tags (<h1> - <h6>) - * - * @param int $level 1-6 - * @return void - */ - function handleHeader($level) { - if ($this->parser->isStartTag) { - $this->out(str_repeat('#', $level).' ', true); - } else { - $this->setLineBreaks(2); - } - } - /** - * handle <p> tags - * - * @param void - * @return void - */ - function handleTag_p() { - if (!$this->parser->isStartTag) { - $this->setLineBreaks(2); - } - } - /** - * handle <a> tags - * - * @param void - * @return void - */ - function handleTag_a() { - if ($this->parser->isStartTag) { - $this->buffer(); - if (isset($this->parser->tagAttributes['title'])) { - $this->parser->tagAttributes['title'] = $this->decode($this->parser->tagAttributes['title']); - } else { - $this->parser->tagAttributes['title'] = null; - } - $this->parser->tagAttributes['href'] = $this->decode(trim($this->parser->tagAttributes['href'])); - $this->stack(); - } else { - $tag = $this->unstack(); - $buffer = $this->unbuffer(); - - if (empty($tag['href']) && empty($tag['title'])) { - # empty links... testcase mania, who would possibly do anything like that?! - $this->out('['.$buffer.']()', true); - return; - } - - if ($buffer == $tag['href'] && empty($tag['title'])) { - # <http://example.com> - $this->out('<'.$buffer.'>', true); - return; - } - - $bufferDecoded = $this->decode(trim($buffer)); - if (substr($tag['href'], 0, 7) == 'mailto:' && 'mailto:'.$bufferDecoded == $tag['href']) { - if (is_null($tag['title'])) { - # <mail@example.com> - $this->out('<'.$bufferDecoded.'>', true); - return; - } - # [mail@example.com][1] - # ... - # [1]: mailto:mail@example.com Title - $tag['href'] = 'mailto:'.$bufferDecoded; - } - - $this->out('['.$buffer.']('.$tag['href'].' "'.$tag['title'].'")', true); - -/* - # [This link][id] - foreach ($this->stack['a'] as $tag2) { - if ($tag2['href'] == $tag['href'] && $tag2['title'] === $tag['title']) { - $tag['linkID'] = $tag2['linkID']; - break; - } - } - if (!isset($tag['linkID'])) { - $tag['linkID'] = count($this->stack['a']) + 1; - array_push($this->stack['a'], $tag); - } - - $this->out('['.$buffer.']['.$tag['linkID'].']', true); -*/ - } - } - /** - * handle <img /> tags - * - * @param void - * @return void - */ - function handleTag_img() { - if (!$this->parser->isStartTag) { - return; # just to be sure this is really an empty tag... - } - - if (isset($this->parser->tagAttributes['title'])) { - $this->parser->tagAttributes['title'] = $this->decode($this->parser->tagAttributes['title']); - } else { - $this->parser->tagAttributes['title'] = null; - } - if (isset($this->parser->tagAttributes['alt'])) { - $this->parser->tagAttributes['alt'] = $this->decode($this->parser->tagAttributes['alt']); - } else { - $this->parser->tagAttributes['alt'] = null; - } - - if (empty($this->parser->tagAttributes['src'])) { - # support for "empty" images... dunno if this is really needed - # but there are some testcases which do that... - if (!empty($this->parser->tagAttributes['title'])) { - $this->parser->tagAttributes['title'] = ' '.$this->parser->tagAttributes['title'].' '; - } - $this->out('!['.$this->parser->tagAttributes['alt'].']('.$this->parser->tagAttributes['title'].')', true); - return; - } else { - $this->parser->tagAttributes['src'] = $this->decode($this->parser->tagAttributes['src']); - } - -//  - if ($this->parser->tagAttributes['title'] != "") - $this->out('!['.$this->parser->tagAttributes['alt'].']('.$this->parser->tagAttributes['src'].' "'.$this->parser->tagAttributes['title'].'")', true); - else - $this->out('!['.$this->parser->tagAttributes['alt'].']('.$this->parser->tagAttributes['src'].')', true); - -/* - # [This link][id] - $link_id = false; - if (!empty($this->stack['a'])) { - foreach ($this->stack['a'] as $tag) { - if ($tag['href'] == $this->parser->tagAttributes['src'] - && $tag['title'] === $this->parser->tagAttributes['title']) { - $link_id = $tag['linkID']; - break; - } - } - } else { - $this->stack['a'] = array(); - } - if (!$link_id) { - $link_id = count($this->stack['a']) + 1; - $tag = array( - 'href' => $this->parser->tagAttributes['src'], - 'linkID' => $link_id, - 'title' => $this->parser->tagAttributes['title'] - ); - array_push($this->stack['a'], $tag); - } - - $this->out('!['.$this->parser->tagAttributes['alt'].']['.$link_id.']', true); -*/ - } - /** - * handle <code> tags - * - * @param void - * @return void - */ - function handleTag_code() { - if ($this->hasParent('pre')) { - # ignore code blocks inside <pre> - return; - } - if ($this->parser->isStartTag) { - $this->buffer(); - } else { - $buffer = $this->unbuffer(); - # use as many backticks as needed - preg_match_all('#`+#', $buffer, $matches); - if (!empty($matches[0])) { - rsort($matches[0]); - - $ticks = '`'; - while (true) { - if (!in_array($ticks, $matches[0])) { - break; - } - $ticks .= '`'; - } - } else { - $ticks = '`'; - } - if ($buffer[0] == '`' || substr($buffer, -1) == '`') { - $buffer = ' '.$buffer.' '; - } - $this->out($ticks.$buffer.$ticks, true); - } - } - /** - * handle <pre> tags - * - * @param void - * @return void - */ - function handleTag_pre() { - if ($this->keepHTML && $this->parser->isStartTag) { - # check if a simple <code> follows - if (!preg_match('#^\s*<code\s*>#Us', $this->parser->html)) { - # this is no standard markdown code block - $this->handleTagToText(); - return; - } - } - $this->indent(' '); - if (!$this->parser->isStartTag) { - $this->setLineBreaks(2); - } else { - $this->parser->html = ltrim($this->parser->html); - } - } - /** - * handle <blockquote> tags - * - * @param void - * @return void - */ - function handleTag_blockquote() { - $this->indent('> '); - } - /** - * handle <ul> tags - * - * @param void - * @return void - */ - function handleTag_ul() { - if ($this->parser->isStartTag) { - $this->stack(); - if (!$this->keepHTML && $this->lastClosedTag == $this->parser->tagName) { - $this->out("\n".$this->indent.'<!-- -->'."\n".$this->indent."\n".$this->indent); - } - } else { - $this->unstack(); - if ($this->parent() != 'li' || preg_match('#^\s*(</li\s*>\s*<li\s*>\s*)?<(p|blockquote)\s*>#sU', $this->parser->html)) { - # dont make Markdown add unneeded paragraphs - $this->setLineBreaks(2); - } - } - } - /** - * handle <ul> tags - * - * @param void - * @return void - */ - function handleTag_ol() { - # same as above - $this->parser->tagAttributes['num'] = 0; - $this->handleTag_ul(); - } - /** - * handle <li> tags - * - * @param void - * @return void - */ - function handleTag_li() { - if ($this->parent() == 'ol') { - $parent =& $this->getStacked('ol'); - if ($this->parser->isStartTag) { - $parent['num']++; - $this->out($parent['num'].'.'.str_repeat(' ', 3 - strlen($parent['num'])), true); - } - $this->indent(' ', false); - } else { - if ($this->parser->isStartTag) { - $this->out('* ', true); - } - $this->indent(' ', false); - } - if (!$this->parser->isStartTag) { - $this->setLineBreaks(1); - } - } - /** - * handle <hr /> tags - * - * @param void - * @return void - */ - function handleTag_hr() { - if (!$this->parser->isStartTag) { - return; # just to be sure this really is an empty tag - } - $this->out('* * *', true); - $this->setLineBreaks(2); - } - /** - * handle <br /> tags - * - * @param void - * @return void - */ - function handleTag_br() { - $this->out(" \n".$this->indent, true); - $this->parser->html = ltrim($this->parser->html); - } - /** - * node stack, e.g. for <a> and <abbr> tags - * - * @var array<array> - */ - var $stack = array(); - /** - * add current node to the stack - * this only stores the attributes - * - * @param void - * @return void - */ - function stack() { - if (!isset($this->stack[$this->parser->tagName])) { - $this->stack[$this->parser->tagName] = array(); - } - array_push($this->stack[$this->parser->tagName], $this->parser->tagAttributes); - } - /** - * remove current tag from stack - * - * @param void - * @return array - */ - function unstack() { - if (!isset($this->stack[$this->parser->tagName]) || !is_array($this->stack[$this->parser->tagName])) { - trigger_error('Trying to unstack from empty stack. This must not happen.', E_USER_ERROR); - } - return array_pop($this->stack[$this->parser->tagName]); - } - /** - * get last stacked element of type $tagName - * - * @param string $tagName - * @return array - */ - function & getStacked($tagName) { - // no end() so it can be referenced - return $this->stack[$tagName][count($this->stack[$tagName])-1]; - } - /** - * set number of line breaks before next start tag - * - * @param int $number - * @return void - */ - function setLineBreaks($number) { - if ($this->lineBreaks < $number) { - $this->lineBreaks = $number; - } - } - /** - * stores current buffers - * - * @var array<string> - */ - var $buffer = array(); - /** - * buffer next parser output until unbuffer() is called - * - * @param void - * @return void - */ - function buffer() { - array_push($this->buffer, ''); - } - /** - * end current buffer and return buffered output - * - * @param void - * @return string - */ - function unbuffer() { - return array_pop($this->buffer); - } - /** - * append string to the correct var, either - * directly to $this->output or to the current - * buffers - * - * @param string $put - * @return void - */ - function out($put, $nowrap = false) { - if (empty($put)) { - return; - } - if (!empty($this->buffer)) { - $this->buffer[count($this->buffer) - 1] .= $put; - } else { - if ($this->bodyWidth && !$this->parser->keepWhitespace) { # wrap lines - // get last line - $pos = strrpos($this->output, "\n"); - if ($pos === false) { - $line = $this->output; - } else { - $line = substr($this->output, $pos); - } - - if ($nowrap) { - if ($put[0] != "\n" && $this->strlen($line) + $this->strlen($put) > $this->bodyWidth) { - $this->output .= "\n".$this->indent.$put; - } else { - $this->output .= $put; - } - return; - } else { - $put .= "\n"; # make sure we get all lines in the while below - $lineLen = $this->strlen($line); - while ($pos = strpos($put, "\n")) { - $putLine = substr($put, 0, $pos+1); - $put = substr($put, $pos+1); - $putLen = $this->strlen($putLine); - if ($lineLen + $putLen < $this->bodyWidth) { - $this->output .= $putLine; - $lineLen = $putLen; - } else { - $split = preg_split('#^(.{0,'.($this->bodyWidth - $lineLen).'})\b#', $putLine, 2, PREG_SPLIT_OFFSET_CAPTURE | PREG_SPLIT_DELIM_CAPTURE); - $this->output .= rtrim($split[1][0])."\n".$this->indent.$this->wordwrap(ltrim($split[2][0]), $this->bodyWidth, "\n".$this->indent, false); - } - } - $this->output = substr($this->output, 0, -1); - return; - } - } else { - $this->output .= $put; - } - } - } - /** - * current indentation - * - * @var string - */ - var $indent = ''; - /** - * indent next output (start tag) or unindent (end tag) - * - * @param string $str indentation - * @param bool $output add indendation to output - * @return void - */ - function indent($str, $output = true) { - if ($this->parser->isStartTag) { - $this->indent .= $str; - if ($output) { - $this->out($str, true); - } - } else { - $this->indent = substr($this->indent, 0, -strlen($str)); - } - } - /** - * decode email addresses - * - * @author derernst@gmx.ch <http://www.php.net/manual/en/function.html-entity-decode.php#68536> - * @author Milian Wolff <http://milianw.de> - */ - function decode($text, $quote_style = ENT_QUOTES) { - if (version_compare(PHP_VERSION, '5', '>=')) { - # UTF-8 is only supported in PHP 5.x.x and above - $text = html_entity_decode($text, $quote_style, 'UTF-8'); - } else { - if (function_exists('html_entity_decode')) { - $text = html_entity_decode($text, $quote_style, 'ISO-8859-1'); - } else { - static $trans_tbl; - if (!isset($trans_tbl)) { - $trans_tbl = array_flip(get_html_translation_table(HTML_ENTITIES, $quote_style)); - } - $text = strtr($text, $trans_tbl); - } - $text = preg_replace_callback('~&#x([0-9a-f]+);~i', array(&$this, '_decode_hex'), $text); - $text = preg_replace_callback('~&#(\d{2,5});~', array(&$this, '_decode_numeric'), $text); - } - return $text; - } - /** - * callback for decode() which converts a hexadecimal entity to UTF-8 - * - * @param array $matches - * @return string UTF-8 encoded - */ - function _decode_hex($matches) { - return $this->unichr(hexdec($matches[1])); - } - /** - * callback for decode() which converts a numerical entity to UTF-8 - * - * @param array $matches - * @return string UTF-8 encoded - */ - function _decode_numeric($matches) { - return $this->unichr($matches[1]); - } - /** - * UTF-8 chr() which supports numeric entities - * - * @author grey - greywyvern - com <http://www.php.net/manual/en/function.chr.php#55978> - * @param array $matches - * @return string UTF-8 encoded - */ - function unichr($dec) { - if ($dec < 128) { - $utf = chr($dec); - } else if ($dec < 2048) { - $utf = chr(192 + (($dec - ($dec % 64)) / 64)); - $utf .= chr(128 + ($dec % 64)); - } else { - $utf = chr(224 + (($dec - ($dec % 4096)) / 4096)); - $utf .= chr(128 + ((($dec % 4096) - ($dec % 64)) / 64)); - $utf .= chr(128 + ($dec % 64)); - } - return $utf; - } - /** - * UTF-8 strlen() - * - * @param string $str - * @return int - * - * @author dtorop 932 at hotmail dot com <http://www.php.net/manual/en/function.strlen.php#37975> - * @author Milian Wolff <http://milianw.de> - */ - function strlen($str) { - if (function_exists('mb_strlen')) { - return mb_strlen($str, 'UTF-8'); - } else { - return preg_match_all('/[\x00-\x7F\xC0-\xFD]/', $str, $var_empty); - } - } - /** - * wordwrap for utf8 encoded strings - * - * @param string $str - * @param integer $len - * @param string $what - * @return string - */ - function wordwrap($str, $width, $break, $cut = false){ - if (!$cut) { - $regexp = '#^(?:[\x00-\x7F]|[\xC0-\xFF][\x80-\xBF]+){1,'.$width.'}\b#'; - } else { - $regexp = '#^(?:[\x00-\x7F]|[\xC0-\xFF][\x80-\xBF]+){'.$width.'}#'; - } - $return = ''; - while (preg_match($regexp, $str, $matches)) { - $string = $matches[0]; - $str = ltrim(substr($str, strlen($string))); - if (!$cut && isset($str[0]) && in_array($str[0], array('.', '!', ';', ':', '?', ','))) { - $string .= $str[0]; - $str = ltrim(substr($str, 1)); - } - $return .= $string.$break; - } - return $return.ltrim($str); - } - /** - * check if current node has a $tagName as parent (somewhere, not only the direct parent) - * - * @param string $tagName - * @return bool - */ - function hasParent($tagName) { - return in_array($tagName, $this->parser->openTags); - } - /** - * get tagName of direct parent tag - * - * @param void - * @return string $tagName - */ - function parent() { - return end($this->parser->openTags); - } -} diff --git a/library/markdownify/markdownify_cli.php b/library/markdownify/markdownify_cli.php deleted file mode 100755 index b3fffbd5c..000000000 --- a/library/markdownify/markdownify_cli.php +++ /dev/null @@ -1,33 +0,0 @@ -#!/usr/bin/php -<?php -require dirname(__FILE__) .'/markdownify_extra.php'; - -function param($name, $default = false) { - if (!in_array('--'.$name, $_SERVER['argv'])) - return $default; - reset($_SERVER['argv']); - while (each($_SERVER['argv'])) { - if (current($_SERVER['argv']) == '--'.$name) - break; - } - $value = next($_SERVER['argv']); - if ($value === false || substr($value, 0, 2) == '--') - return true; - else - return $value; -} - - -$input = stream_get_contents(STDIN); - -$linksAfterEachParagraph = param('links'); -$bodyWidth = param('width'); -$keepHTML = param('html', true); - -if (param('no_extra')) { - $parser = new Markdownify($linksAfterEachParagraph, $bodyWidth, $keepHTML); -} else { - $parser = new Markdownify_Extra($linksAfterEachParagraph, $bodyWidth, $keepHTML); -} - -echo $parser->parseString($input) ."\n";
\ No newline at end of file diff --git a/library/markdownify/markdownify_extra.php b/library/markdownify/markdownify_extra.php deleted file mode 100644 index e978a1c8a..000000000 --- a/library/markdownify/markdownify_extra.php +++ /dev/null @@ -1,489 +0,0 @@ -<?php -/** - * Class to convert HTML to Markdown with PHP Markdown Extra syntax support. - * - * @version 1.0.0 alpha - * @author Milian Wolff (<mail@milianw.de>, <http://milianw.de>) - * @license LGPL, see LICENSE_LGPL.txt and the summary below - * @copyright (C) 2007 Milian Wolff - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** - * standard Markdownify class - */ -require_once dirname(__FILE__).'/markdownify.php'; - -class Markdownify_Extra extends Markdownify { - /** - * table data, including rows with content and the maximum width of each col - * - * @var array - */ - var $table = array(); - /** - * current col - * - * @var int - */ - var $col = -1; - /** - * current row - * - * @var int - */ - var $row = 0; - /** - * constructor, see Markdownify::Markdownify() for more information - */ - function Markdownify_Extra($linksAfterEachParagraph = MDFY_LINKS_EACH_PARAGRAPH, $bodyWidth = MDFY_BODYWIDTH, $keepHTML = MDFY_KEEPHTML) { - parent::Markdownify($linksAfterEachParagraph, $bodyWidth, $keepHTML); - - ### new markdownable tags & attributes - # header ids: # foo {bar} - $this->isMarkdownable['h1']['id'] = 'optional'; - $this->isMarkdownable['h2']['id'] = 'optional'; - $this->isMarkdownable['h3']['id'] = 'optional'; - $this->isMarkdownable['h4']['id'] = 'optional'; - $this->isMarkdownable['h5']['id'] = 'optional'; - $this->isMarkdownable['h6']['id'] = 'optional'; - # tables - $this->isMarkdownable['table'] = array(); - $this->isMarkdownable['th'] = array( - 'align' => 'optional', - ); - $this->isMarkdownable['td'] = array( - 'align' => 'optional', - ); - $this->isMarkdownable['tr'] = array(); - array_push($this->ignore, 'thead'); - array_push($this->ignore, 'tbody'); - array_push($this->ignore, 'tfoot'); - # definition lists - $this->isMarkdownable['dl'] = array(); - $this->isMarkdownable['dd'] = array(); - $this->isMarkdownable['dt'] = array(); - # footnotes - $this->isMarkdownable['fnref'] = array( - 'target' => 'required', - ); - $this->isMarkdownable['footnotes'] = array(); - $this->isMarkdownable['fn'] = array( - 'name' => 'required', - ); - $this->parser->blockElements['fnref'] = false; - $this->parser->blockElements['fn'] = true; - $this->parser->blockElements['footnotes'] = true; - # abbr - $this->isMarkdownable['abbr'] = array( - 'title' => 'required', - ); - # build RegEx lookahead to decide wether table can pe parsed or not - $inlineTags = array_keys($this->parser->blockElements, false); - $colContents = '(?:[^<]|<(?:'.implode('|', $inlineTags).'|[^a-z]))+'; - $this->tableLookaheadHeader = '{ - ^\s*(?:<thead\s*>)?\s* # open optional thead - <tr\s*>\s*(?: # start required row with headers - <th(?:\s+align=("|\')(?:left|center|right)\1)?\s*> # header with optional align - \s*'.$colContents.'\s* # contents - </th>\s* # close header - )+</tr> # close row with headers - \s*(?:</thead>)? # close optional thead - }sxi'; - $this->tdSubstitute = '\s*'.$colContents.'\s* # contents - </td>\s*'; - $this->tableLookaheadBody = '{ - \s*(?:<tbody\s*>)?\s* # open optional tbody - (?:<tr\s*>\s* # start row - %s # cols to be substituted - </tr>)+ # close row - \s*(?:</tbody>)? # close optional tbody - \s*</table> # close table - }sxi'; - } - /** - * handle header tags (<h1> - <h6>) - * - * @param int $level 1-6 - * @return void - */ - function handleHeader($level) { - static $id = null; - if ($this->parser->isStartTag) { - if (isset($this->parser->tagAttributes['id'])) { - $id = $this->parser->tagAttributes['id']; - } - } else { - if (!is_null($id)) { - $this->out(' {#'.$id.'}'); - $id = null; - } - } - parent::handleHeader($level); - } - /** - * handle <abbr> tags - * - * @param void - * @return void - */ - function handleTag_abbr() { - if ($this->parser->isStartTag) { - $this->stack(); - $this->buffer(); - } else { - $tag = $this->unstack(); - $tag['text'] = $this->unbuffer(); - $add = true; - foreach ($this->stack['abbr'] as $stacked) { - if ($stacked['text'] == $tag['text']) { - /** TODO: differing abbr definitions, i.e. different titles for same text **/ - $add = false; - break; - } - } - $this->out($tag['text']); - if ($add) { - array_push($this->stack['abbr'], $tag); - } - } - } - /** - * flush stacked abbr tags - * - * @param void - * @return void - */ - function flushStacked_abbr() { - $out = array(); - foreach ($this->stack['abbr'] as $k => $tag) { - if (!isset($tag['unstacked'])) { - array_push($out, ' *['.$tag['text'].']: '.$tag['title']); - $tag['unstacked'] = true; - $this->stack['abbr'][$k] = $tag; - } - } - if (!empty($out)) { - $this->out("\n\n".implode("\n", $out)); - } - } - /** - * handle <table> tags - * - * @param void - * @return void - */ - function handleTag_table() { - if ($this->parser->isStartTag) { - # check if upcoming table can be converted - if ($this->keepHTML) { - if (preg_match($this->tableLookaheadHeader, $this->parser->html, $matches)) { - # header seems good, now check body - # get align & number of cols - preg_match_all('#<th(?:\s+align=("|\')(left|right|center)\1)?\s*>#si', $matches[0], $cols); - $regEx = ''; - $i = 1; - $aligns = array(); - foreach ($cols[2] as $align) { - $align = strtolower($align); - array_push($aligns, $align); - if (empty($align)) { - $align = 'left'; # default value - } - $td = '\s+align=("|\')'.$align.'\\'.$i; - $i++; - if ($align == 'left') { - # look for empty align or left - $td = '(?:'.$td.')?'; - } - $td = '<td'.$td.'\s*>'; - $regEx .= $td.$this->tdSubstitute; - } - $regEx = sprintf($this->tableLookaheadBody, $regEx); - if (preg_match($regEx, $this->parser->html, $matches, null, strlen($matches[0]))) { - # this is a markdownable table tag! - $this->table = array( - 'rows' => array(), - 'col_widths' => array(), - 'aligns' => $aligns, - ); - $this->row = 0; - } else { - # non markdownable table - $this->handleTagToText(); - } - } else { - # non markdownable table - $this->handleTagToText(); - } - } else { - $this->table = array( - 'rows' => array(), - 'col_widths' => array(), - 'aligns' => array(), - ); - $this->row = 0; - } - } else { - # finally build the table in Markdown Extra syntax - $separator = array(); - # seperator with correct align identifikators - foreach($this->table['aligns'] as $col => $align) { - if (!$this->keepHTML && !isset($this->table['col_widths'][$col])) { - break; - } - $left = ' '; - $right = ' '; - switch ($align) { - case 'left': - $left = ':'; - break; - case 'center': - $right = ':'; - $left = ':'; - case 'right': - $right = ':'; - break; - } - array_push($separator, $left.str_repeat('-', $this->table['col_widths'][$col]).$right); - } - $separator = '|'.implode('|', $separator).'|'; - - $rows = array(); - # add padding - array_walk_recursive($this->table['rows'], array(&$this, 'alignTdContent')); - $header = array_shift($this->table['rows']); - array_push($rows, '| '.implode(' | ', $header).' |'); - array_push($rows, $separator); - foreach ($this->table['rows'] as $row) { - array_push($rows, '| '.implode(' | ', $row).' |'); - } - $this->out(implode("\n".$this->indent, $rows)); - $this->table = array(); - $this->setLineBreaks(2); - } - } - /** - * properly pad content so it is aligned as whished - * should be used with array_walk_recursive on $this->table['rows'] - * - * @param string &$content - * @param int $col - * @return void - */ - function alignTdContent(&$content, $col) { - switch ($this->table['aligns'][$col]) { - default: - case 'left': - $content .= str_repeat(' ', $this->table['col_widths'][$col] - $this->strlen($content)); - break; - case 'right': - $content = str_repeat(' ', $this->table['col_widths'][$col] - $this->strlen($content)).$content; - break; - case 'center': - $paddingNeeded = $this->table['col_widths'][$col] - $this->strlen($content); - $left = floor($paddingNeeded / 2); - $right = $paddingNeeded - $left; - $content = str_repeat(' ', $left).$content.str_repeat(' ', $right); - break; - } - } - /** - * handle <tr> tags - * - * @param void - * @return void - */ - function handleTag_tr() { - if ($this->parser->isStartTag) { - $this->col = -1; - } else { - $this->row++; - } - } - /** - * handle <td> tags - * - * @param void - * @return void - */ - function handleTag_td() { - if ($this->parser->isStartTag) { - $this->col++; - if (!isset($this->table['col_widths'][$this->col])) { - $this->table['col_widths'][$this->col] = 0; - } - $this->buffer(); - } else { - $buffer = trim($this->unbuffer()); - $this->table['col_widths'][$this->col] = max($this->table['col_widths'][$this->col], $this->strlen($buffer)); - $this->table['rows'][$this->row][$this->col] = $buffer; - } - } - /** - * handle <th> tags - * - * @param void - * @return void - */ - function handleTag_th() { - if (!$this->keepHTML && !isset($this->table['rows'][1]) && !isset($this->table['aligns'][$this->col+1])) { - if (isset($this->parser->tagAttributes['align'])) { - $this->table['aligns'][$this->col+1] = $this->parser->tagAttributes['align']; - } else { - $this->table['aligns'][$this->col+1] = ''; - } - } - $this->handleTag_td(); - } - /** - * handle <dl> tags - * - * @param void - * @return void - */ - function handleTag_dl() { - if (!$this->parser->isStartTag) { - $this->setLineBreaks(2); - } - } - /** - * handle <dt> tags - * - * @param void - * @return void - **/ - function handleTag_dt() { - if (!$this->parser->isStartTag) { - $this->setLineBreaks(1); - } - } - /** - * handle <dd> tags - * - * @param void - * @return void - */ - function handleTag_dd() { - if ($this->parser->isStartTag) { - if (substr(ltrim($this->parser->html), 0, 3) == '<p>') { - # next comes a paragraph, so we'll need an extra line - $this->out("\n".$this->indent); - } elseif (substr($this->output, -2) == "\n\n") { - $this->output = substr($this->output, 0, -1); - } - $this->out(': '); - $this->indent(' ', false); - } else { - # lookahead for next dt - if (substr(ltrim($this->parser->html), 0, 4) == '<dt>') { - $this->setLineBreaks(2); - } else { - $this->setLineBreaks(1); - } - $this->indent(' '); - } - } - /** - * handle <fnref /> tags (custom footnote references, see markdownify_extra::parseString()) - * - * @param void - * @return void - */ - function handleTag_fnref() { - $this->out('[^'.$this->parser->tagAttributes['target'].']'); - } - /** - * handle <fn> tags (custom footnotes, see markdownify_extra::parseString() - * and markdownify_extra::_makeFootnotes()) - * - * @param void - * @return void - */ - function handleTag_fn() { - if ($this->parser->isStartTag) { - $this->out('[^'.$this->parser->tagAttributes['name'].']:'); - $this->setLineBreaks(1); - } else { - $this->setLineBreaks(2); - } - $this->indent(' '); - } - /** - * handle <footnotes> tag (custom footnotes, see markdownify_extra::parseString() - * and markdownify_extra::_makeFootnotes()) - * - * @param void - * @return void - */ - function handleTag_footnotes() { - if (!$this->parser->isStartTag) { - $this->setLineBreaks(2); - } - } - /** - * parse a HTML string, clean up footnotes prior - * - * @param string $HTML input - * @return string Markdown formatted output - */ - function parseString($html) { - /** TODO: custom markdown-extra options, e.g. titles & classes **/ - # <sup id="fnref:..."><a href"#fn..." rel="footnote">...</a></sup> - # => <fnref target="..." /> - $html = preg_replace('@<sup id="fnref:([^"]+)">\s*<a href="#fn:\1" rel="footnote">\s*\d+\s*</a>\s*</sup>@Us', '<fnref target="$1" />', $html); - # <div class="footnotes"> - # <hr /> - # <ol> - # - # <li id="fn:...">...</li> - # ... - # - # </ol> - # </div> - # => - # <footnotes> - # <fn name="...">...</fn> - # ... - # </footnotes> - $html = preg_replace_callback('#<div class="footnotes">\s*<hr />\s*<ol>\s*(.+)\s*</ol>\s*</div>#Us', array(&$this, '_makeFootnotes'), $html); - return parent::parseString($html); - } - /** - * replace HTML representation of footnotes with something more easily parsable - * - * @note this is a callback to be used in parseString() - * - * @param array $matches - * @return string - */ - function _makeFootnotes($matches) { - # <li id="fn:1"> - # ... - # <a href="#fnref:block" rev="footnote">↩</a></p> - # </li> - # => <fn name="1">...</fn> - # remove footnote link - $fns = preg_replace('@\s*( \s*)?<a href="#fnref:[^"]+" rev="footnote"[^>]*>↩</a>\s*@s', '', $matches[1]); - # remove empty paragraph - $fns = preg_replace('@<p>\s*</p>@s', '', $fns); - # <li id="fn:1">...</li> -> <footnote nr="1">...</footnote> - $fns = str_replace('<li id="fn:', '<fn name="', $fns); - - $fns = '<footnotes>'.$fns.'</footnotes>'; - return preg_replace('#</li>\s*(?=(?:<fn|</footnotes>))#s', '</fn>$1', $fns); - } -}
\ No newline at end of file diff --git a/library/markdownify/parsehtml/parsehtml.php b/library/markdownify/parsehtml/parsehtml.php deleted file mode 100644 index 1a8ecacda..000000000 --- a/library/markdownify/parsehtml/parsehtml.php +++ /dev/null @@ -1,618 +0,0 @@ -<?php -/** - * parseHTML is a HTML parser which works with PHP 4 and above. - * It tries to handle invalid HTML to some degree. - * - * @version 1.0 beta - * @author Milian Wolff (mail@milianw.de, http://milianw.de) - * @license LGPL, see LICENSE_LGPL.txt and the summary below - * @copyright (C) 2007 Milian Wolff - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ -class parseHTML { - /** - * tags which are always empty (<br /> etc.) - * - * @var array<string> - */ - var $emptyTags = array( - 'br', - 'hr', - 'input', - 'img', - 'area', - 'link', - 'meta', - 'param', - ); - /** - * tags with preformatted text - * whitespaces wont be touched in them - * - * @var array<string> - */ - var $preformattedTags = array( - 'script', - 'style', - 'pre', - 'code', - ); - /** - * supress HTML tags inside preformatted tags (see above) - * - * @var bool - */ - var $noTagsInCode = false; - /** - * html to be parsed - * - * @var string - */ - var $html = ''; - /** - * node type: - * - * - tag (see isStartTag) - * - text (includes cdata) - * - comment - * - doctype - * - pi (processing instruction) - * - * @var string - */ - var $nodeType = ''; - /** - * current node content, i.e. either a - * simple string (text node), or something like - * <tag attrib="value"...> - * - * @var string - */ - var $node = ''; - /** - * wether current node is an opening tag (<a>) or not (</a>) - * set to NULL if current node is not a tag - * NOTE: empty tags (<br />) set this to true as well! - * - * @var bool | null - */ - var $isStartTag = null; - /** - * wether current node is an empty tag (<br />) or not (<a></a>) - * - * @var bool | null - */ - var $isEmptyTag = null; - /** - * tag name - * - * @var string | null - */ - var $tagName = ''; - /** - * attributes of current tag - * - * @var array (attribName=>value) | null - */ - var $tagAttributes = null; - /** - * wether the current tag is a block element - * - * @var bool | null - */ - var $isBlockElement = null; - - /** - * keep whitespace - * - * @var int - */ - var $keepWhitespace = 0; - /** - * list of open tags - * count this to get current depth - * - * @var array - */ - var $openTags = array(); - /** - * list of block elements - * - * @var array - * TODO: what shall we do with <del> and <ins> ?! - */ - var $blockElements = array ( - # tag name => <bool> is block - # block elements - 'address' => true, - 'blockquote' => true, - 'center' => true, - 'del' => true, - 'dir' => true, - 'div' => true, - 'dl' => true, - 'fieldset' => true, - 'form' => true, - 'h1' => true, - 'h2' => true, - 'h3' => true, - 'h4' => true, - 'h5' => true, - 'h6' => true, - 'hr' => true, - 'ins' => true, - 'isindex' => true, - 'menu' => true, - 'noframes' => true, - 'noscript' => true, - 'ol' => true, - 'p' => true, - 'pre' => true, - 'table' => true, - 'ul' => true, - # set table elements and list items to block as well - 'thead' => true, - 'tbody' => true, - 'tfoot' => true, - 'td' => true, - 'tr' => true, - 'th' => true, - 'li' => true, - 'dd' => true, - 'dt' => true, - # header items and html / body as well - 'html' => true, - 'body' => true, - 'head' => true, - 'meta' => true, - 'link' => true, - 'style' => true, - 'title' => true, - # unfancy media tags, when indented should be rendered as block - 'map' => true, - 'object' => true, - 'param' => true, - 'embed' => true, - 'area' => true, - # inline elements - 'a' => false, - 'abbr' => false, - 'acronym' => false, - 'applet' => false, - 'b' => false, - 'basefont' => false, - 'bdo' => false, - 'big' => false, - 'br' => false, - 'button' => false, - 'cite' => false, - 'code' => false, - 'del' => false, - 'dfn' => false, - 'em' => false, - 'font' => false, - 'i' => false, - 'img' => false, - 'ins' => false, - 'input' => false, - 'iframe' => false, - 'kbd' => false, - 'label' => false, - 'q' => false, - 'samp' => false, - 'script' => false, - 'select' => false, - 'small' => false, - 'span' => false, - 'strong' => false, - 'sub' => false, - 'sup' => false, - 'textarea' => false, - 'tt' => false, - 'var' => false, - ); - /** - * get next node, set $this->html prior! - * - * @param void - * @return bool - */ - function nextNode() { - if (empty($this->html)) { - # we are done with parsing the html string - return false; - } - static $skipWhitespace = true; - if ($this->isStartTag && !$this->isEmptyTag) { - array_push($this->openTags, $this->tagName); - if (in_array($this->tagName, $this->preformattedTags)) { - # dont truncate whitespaces for <code> or <pre> contents - $this->keepWhitespace++; - } - } - - if ($this->html[0] == '<') { - $token = substr($this->html, 0, 9); - if (substr($token, 0, 2) == '<?') { - # xml prolog or other pi's - /** TODO **/ - #trigger_error('this might need some work', E_USER_NOTICE); - $pos = strpos($this->html, '>'); - $this->setNode('pi', $pos + 1); - return true; - } - if (substr($token, 0, 4) == '<!--') { - # comment - $pos = strpos($this->html, '-->'); - if ($pos === false) { - # could not find a closing -->, use next gt instead - # this is firefox' behaviour - $pos = strpos($this->html, '>') + 1; - } else { - $pos += 3; - } - $this->setNode('comment', $pos); - - $skipWhitespace = true; - return true; - } - if ($token == '<!DOCTYPE') { - # doctype - $this->setNode('doctype', strpos($this->html, '>')+1); - - $skipWhitespace = true; - return true; - } - if ($token == '<![CDATA[') { - # cdata, use text node - - # remove leading <![CDATA[ - $this->html = substr($this->html, 9); - - $this->setNode('text', strpos($this->html, ']]>')+3); - - # remove trailing ]]> and trim - $this->node = substr($this->node, 0, -3); - $this->handleWhitespaces(); - - $skipWhitespace = true; - return true; - } - if ($this->parseTag()) { - # seems to be a tag - # handle whitespaces - if ($this->isBlockElement) { - $skipWhitespace = true; - } else { - $skipWhitespace = false; - } - return true; - } - } - if ($this->keepWhitespace) { - $skipWhitespace = false; - } - # when we get here it seems to be a text node - $pos = strpos($this->html, '<'); - if ($pos === false) { - $pos = strlen($this->html); - } - $this->setNode('text', $pos); - $this->handleWhitespaces(); - if ($skipWhitespace && $this->node == ' ') { - return $this->nextNode(); - } - $skipWhitespace = false; - return true; - } - /** - * parse tag, set tag name and attributes, see if it's a closing tag and so forth... - * - * @param void - * @return bool - */ - function parseTag() { - static $a_ord, $z_ord, $special_ords; - if (!isset($a_ord)) { - $a_ord = ord('a'); - $z_ord = ord('z'); - $special_ords = array( - ord(':'), // for xml:lang - ord('-'), // for http-equiv - ); - } - - $tagName = ''; - - $pos = 1; - $isStartTag = $this->html[$pos] != '/'; - if (!$isStartTag) { - $pos++; - } - # get tagName - while (isset($this->html[$pos])) { - $pos_ord = ord(strtolower($this->html[$pos])); - if (($pos_ord >= $a_ord && $pos_ord <= $z_ord) || (!empty($tagName) && is_numeric($this->html[$pos]))) { - $tagName .= $this->html[$pos]; - $pos++; - } else { - $pos--; - break; - } - } - - $tagName = strtolower($tagName); - if (empty($tagName) || !isset($this->blockElements[$tagName])) { - # something went wrong => invalid tag - $this->invalidTag(); - return false; - } - if ($this->noTagsInCode && end($this->openTags) == 'code' && !($tagName == 'code' && !$isStartTag)) { - # we supress all HTML tags inside code tags - $this->invalidTag(); - return false; - } - - # get tag attributes - /** TODO: in html 4 attributes do not need to be quoted **/ - $isEmptyTag = false; - $attributes = array(); - $currAttrib = ''; - while (isset($this->html[$pos+1])) { - $pos++; - # close tag - if ($this->html[$pos] == '>' || $this->html[$pos].$this->html[$pos+1] == '/>') { - if ($this->html[$pos] == '/') { - $isEmptyTag = true; - $pos++; - } - break; - } - - $pos_ord = ord(strtolower($this->html[$pos])); - if ( ($pos_ord >= $a_ord && $pos_ord <= $z_ord) || in_array($pos_ord, $special_ords)) { - # attribute name - $currAttrib .= $this->html[$pos]; - } elseif (in_array($this->html[$pos], array(' ', "\t", "\n"))) { - # drop whitespace - } elseif (in_array($this->html[$pos].$this->html[$pos+1], array('="', "='"))) { - # get attribute value - $pos++; - $await = $this->html[$pos]; # single or double quote - $pos++; - $value = ''; - while (isset($this->html[$pos]) && $this->html[$pos] != $await) { - $value .= $this->html[$pos]; - $pos++; - } - $attributes[$currAttrib] = $value; - $currAttrib = ''; - } else { - $this->invalidTag(); - return false; - } - } - if ($this->html[$pos] != '>') { - $this->invalidTag(); - return false; - } - - if (!empty($currAttrib)) { - # html 4 allows something like <option selected> instead of <option selected="selected"> - $attributes[$currAttrib] = $currAttrib; - } - if (!$isStartTag) { - if (!empty($attributes) || $tagName != end($this->openTags)) { - # end tags must not contain any attributes - # or maybe we did not expect a different tag to be closed - $this->invalidTag(); - return false; - } - array_pop($this->openTags); - if (in_array($tagName, $this->preformattedTags)) { - $this->keepWhitespace--; - } - } - $pos++; - $this->node = substr($this->html, 0, $pos); - $this->html = substr($this->html, $pos); - $this->tagName = $tagName; - $this->tagAttributes = $attributes; - $this->isStartTag = $isStartTag; - $this->isEmptyTag = $isEmptyTag || in_array($tagName, $this->emptyTags); - if ($this->isEmptyTag) { - # might be not well formed - $this->node = preg_replace('# */? *>$#', ' />', $this->node); - } - $this->nodeType = 'tag'; - $this->isBlockElement = $this->blockElements[$tagName]; - return true; - } - /** - * handle invalid tags - * - * @param void - * @return void - */ - function invalidTag() { - $this->html = substr_replace($this->html, '<', 0, 1); - } - /** - * update all vars and make $this->html shorter - * - * @param string $type see description for $this->nodeType - * @param int $pos to which position shall we cut? - * @return void - */ - function setNode($type, $pos) { - if ($this->nodeType == 'tag') { - # set tag specific vars to null - # $type == tag should not be called here - # see this::parseTag() for more - $this->tagName = null; - $this->tagAttributes = null; - $this->isStartTag = null; - $this->isEmptyTag = null; - $this->isBlockElement = null; - - } - $this->nodeType = $type; - $this->node = substr($this->html, 0, $pos); - $this->html = substr($this->html, $pos); - } - /** - * check if $this->html begins with $str - * - * @param string $str - * @return bool - */ - function match($str) { - return substr($this->html, 0, strlen($str)) == $str; - } - /** - * truncate whitespaces - * - * @param void - * @return void - */ - function handleWhitespaces() { - if ($this->keepWhitespace) { - # <pre> or <code> before... - return; - } - # truncate multiple whitespaces to a single one - $this->node = preg_replace('#\s+#s', ' ', $this->node); - } - /** - * normalize self::node - * - * @param void - * @return void - */ - function normalizeNode() { - $this->node = '<'; - if (!$this->isStartTag) { - $this->node .= '/'.$this->tagName.'>'; - return; - } - $this->node .= $this->tagName; - foreach ($this->tagAttributes as $name => $value) { - $this->node .= ' '.$name.'="'.str_replace('"', '"', $value).'"'; - } - if ($this->isEmptyTag) { - $this->node .= ' /'; - } - $this->node .= '>'; - } -} - -/** - * indent a HTML string properly - * - * @param string $html - * @param string $indent optional - * @return string - */ -function indentHTML($html, $indent = " ", $noTagsInCode = false) { - $parser = new parseHTML; - $parser->noTagsInCode = $noTagsInCode; - $parser->html = $html; - $html = ''; - $last = true; # last tag was block elem - $indent_a = array(); - while($parser->nextNode()) { - if ($parser->nodeType == 'tag') { - $parser->normalizeNode(); - } - if ($parser->nodeType == 'tag' && $parser->isBlockElement) { - $isPreOrCode = in_array($parser->tagName, array('code', 'pre')); - if (!$parser->keepWhitespace && !$last && !$isPreOrCode) { - $html = rtrim($html)."\n"; - } - if ($parser->isStartTag) { - $html .= implode($indent_a); - if (!$parser->isEmptyTag) { - array_push($indent_a, $indent); - } - } else { - array_pop($indent_a); - if (!$isPreOrCode) { - $html .= implode($indent_a); - } - } - $html .= $parser->node; - if (!$parser->keepWhitespace && !($isPreOrCode && $parser->isStartTag)) { - $html .= "\n"; - } - $last = true; - } else { - if ($parser->nodeType == 'tag' && $parser->tagName == 'br') { - $html .= $parser->node."\n"; - $last = true; - continue; - } elseif ($last && !$parser->keepWhitespace) { - $html .= implode($indent_a); - $parser->node = ltrim($parser->node); - } - $html .= $parser->node; - - if (in_array($parser->nodeType, array('comment', 'pi', 'doctype'))) { - $html .= "\n"; - } else { - $last = false; - } - } - } - return $html; -} -/* -# testcase / example -error_reporting(E_ALL); - -$html = '<p>Simple block on one line:</p> - -<div>foo</div> - -<p>And nested without indentation:</p> - -<div> -<div> -<div> -foo -</div> -<div style=">"/> -</div> -<div>bar</div> -</div> - -<p>And with attributes:</p> - -<div> - <div id="foo"> - </div> -</div> - -<p>This was broken in 1.0.2b7:</p> - -<div class="inlinepage"> -<div class="toggleableend"> -foo -</div> -</div>'; -#$html = '<a href="asdfasdf" title=\'asdf\' foo="bar">asdf</a>'; -echo indentHTML($html); -die(); -*/ |