* All rights reserved. * * Thanks to Carlo Zottmann for refactoring * Textile's procedural code into a class framework * * Additions and fixes Copyright (c) 2006 Alex Shiels http://thresholdstate.com/ * Additions and fixes Copyright (c) 2010 Stef Dawson http://stefdawson.com/ * Additions and fixes Copyright (c) 2010-13 Netcarver http://github.com/netcarver * Additions and fixes Copyright (c) 2011 Jeff Soo http://ipsedixit.net * Additions and fixes Copyright (c) 2012 Robert Wetzlmayr http://wetzlmayr.com/ * Additions and fixes Copyright (c) 2012-13 Jukka Svahn http://rahforum.biz/ * * 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 Textile 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. */ /* _________ U S A G E Block modifier syntax: Header: h(1-6). Paragraphs beginning with 'hn. ' (where n is 1-6) are wrapped in header tags. Example: h1. Header... ->

Header...

Paragraph: p. (also applied by default) Example: p. Text ->

Text

Blockquote: bq. Example: bq. Block quotation... ->

Block quotation...

Blockquote with citation: bq.:http://citation.url Example: bq.:http://textism.com/ Text... ->

Text...

Footnote: fn(1-100). Example: fn1. Footnote... ->

Footnote...

Numeric list: #, ## Consecutive paragraphs beginning with # are wrapped in ordered list tags. Example:

ordered list

Bulleted list: *, ** Consecutive paragraphs beginning with * are wrapped in unordered list tags. Example:

unordered list

Definition list: Terms ;, ;; Definitions :, :: Consecutive paragraphs beginning with ; or : are wrapped in definition list tags. Example:

term: definition

Redcloth-style Definition list: - Term1 := Definition1 - Term2 := Extended definition =: Phrase modifier syntax: _emphasis_ -> emphasis __italic__ -> italic *strong* -> strong **bold** -> bold ??citation?? -> citation -deleted text- -> ~~deleted~~ +inserted text+ -> inserted ^superscript^ -> ^superscript ~subscript~ -> _subscript @code@ -> computer code %(bob)span% -> span ==notextile== -> leave text alone (do not format) "linktext":url -> linktext "linktext(title)":url -> linktext "$":url -> url "$(title)":url -> url !imageurl! ->

!imageurl(alt text)! ->

!imageurl!:linkurl ->

ABC(Always Be Closing) -> ABC Linked Notes: ============ Allows the generation of an automated list of notes with links. Linked notes are composed of three parts, a set of named _definitions_, a set of _references_ to those definitions and one or more _placeholders_ indicating where the consolidated list of notes is to be placed in your document. Definitions. ----------- Each note definition must occur in its own paragraph and should look like this... note#mynotelabel. Your definition text here. You are free to use whatever label you wish after the # as long as it is made up of letters, numbers, colon(:) or dash(-). References. ---------- Each note reference is marked in your text like this[#mynotelabel] and it will be replaced with a superscript reference that links into the list of note definitions. List Placeholder(s). ------------------- The note list can go anywhere in your document. You have to indicate where like this... notelist. notelist can take attributes (class#id) like this: notelist(class#id). By default, the note list will show each definition in the order that they are referenced in the text by the _references_. It will show each definition with a full list of backlinks to each reference. If you do not want this, you can choose to override the backlinks like this... notelist(class#id)!. Produces a list with no backlinks. notelist(class#id)^. Produces a list with only the first backlink. Should you wish to have a specific definition display backlinks differently to this then you can override the backlink method by appending a link override to the _definition_ you wish to customise. note#label. Uses the citelist's setting for backlinks. note#label!. Causes that definition to have no backlinks. note#label^. Causes that definition to have one backlink (to the first ref.) note#label*. Causes that definition to have all backlinks. Any unreferenced notes will be left out of the list unless you explicitly state you want them by adding a '+'. Like this... notelist(class#id)!+. Giving a list of all notes without any backlinks. You can mix and match the list backlink control and unreferenced links controls but the backlink control (if any) must go first. Like so: notelist^+. , not like this: notelist+^. Example... Scientists say[#lavader] the moon is small. note#other. An unreferenced note. note#lavader(myliclass). "Proof":url of a small moon. notelist(myclass#myid)+. Would output (the actual IDs used would be randomised)...

Scientists say¹ the moon is small.

^a Proof of a small moon.
An unreferenced note.

The 'a b c' backlink characters can be altered too. For example if you wanted the notes to have numeric backlinks starting from 1: notelist:1. Table syntax: Simple tables: |a|simple|table|row| |And|Another|table|row| |With an||empty|cell| |=. My table caption goes here (NB. Table captions *must* be the first line of the table else treated as a center-aligned cell.) |_. A|_. table|_. header|_.row| |A|simple|table|row| Tables with attributes: table{border:1px solid black}. My table summary here {background:#ddd;color:red}. |{}| | | | To specify thead / tfoot / tbody groups, add one of these on its own line above the row(s) you wish to wrap (you may specify attributes before the dot): |^. # thead |-. # tbody |~. # tfoot Column groups: |:\3. 100| Becomes: You can omit either or both of the \N or width values. You may also add cells after the colgroup definition to specify col elements with span, width, or standard Textile attributes: |:. 50|(firstcol). |\2. 250||300| Becomes: (Note that, per the HTML specification, you should not add span to the colgroup if specifying col elements.) Applying Attributes: Most anywhere Textile code is used, attributes such as arbitrary css style, css classes, and ids can be applied. The syntax is fairly consistent. The following characters quickly alter the alignment of block elements: < -> left align ex. p<. left-aligned para > -> right align h3>. right-aligned header 3 = -> centred h4=. centred header 4 <> -> justified p<>. justified paragraph These will change vertical alignment in table cells: ^ -> top ex. |^. top-aligned table cell| - -> middle |-. middle aligned| ~ -> bottom |~. bottom aligned cell| Plain (parentheses) inserted between block syntax and the closing dot-space indicate classes and ids: p(hector). paragraph ->

paragraph

p(#fluid). paragraph ->

paragraph

(classes and ids can be combined) p(hector#fluid). paragraph ->

paragraph

Curly {brackets} insert arbitrary css style p{line-height:18px}. paragraph ->

paragraph

h3{color:red}. header 3 ->

header 3

Square [brackets] insert language attributes p[no]. paragraph ->

paragraph

%[fr]phrase% -> phrase Usually Textile block element syntax requires a dot and space before the block begins, but since lists don't, they can be styled just using braces #{color:blue} one ->

one
big
list

Using the span tag to style a phrase It goes like this, %{color:red}the fourth the fifth% -> It goes like this, the fourth the fifth Ordered List Start & Continuation: You can control the start attribute of an ordered list like so; #5 Item 5 # Item 6 You can resume numbering list items after some intervening anonymous block like so... #_ Item 7 # Item 8 */ /** * Class to allow simple assignment to members of the internal data array **/ class TextileBag { protected $data; public function __construct($initial_data) { $this->data = (is_array($initial_data)) ? $initial_data : array(); } /** * Allows setting of an element in the $data array. eg... * * $bag->key(value); * * ...sets $bag's $data['key'] to $value provided $value is not empty. * The set can be made forced by following $value with true... * * $bag->key(value, true); * * Would force the value into the data array even if it were empty. **/ public function __call($k, $params) { $allow_empty = isset($params[1]) && is_bool($params[1]) ? $params[1] : false; if ($allow_empty || '' != $params[0]) { $this->data[$k] = $params[0]; } return $this; } } /** * Class to allow contruction of HTML tags on conversion of an object to a string * * Example usage... * * $img = new TextileTag('img')->class('big blue')->src('images/elephant.jpg'); * echo $img; **/ class TextileTag extends TextileBag { protected $tag; protected $selfclose; public function __construct($name, $attribs = array(), $selfclosing = true) { parent::__construct($attribs); $this->tag = $name; $this->selfclose = $selfclosing; } public function __tostring() { $attribs = ''; if (count($this->data)) { ksort($this->data); foreach ($this->data as $k => $v) { $attribs .= " $k=\"$v\""; } } if ($this->tag) { $o = '<' . $this->tag . $attribs . (($this->selfclose) ? " />" : '>'); } else { $o = $attribs; } return $o; } } /** * Textile parser. * * @example * $parser = new Textile(); * echo $parser->textileThis('h1. Hello World!'); */ class Textile { /** * Version number. * * @var string */ protected $ver = '2.5.4'; /** * Regular expression snippets. * * @var array */ protected $regex_snippets; /** * Pattern for horizontal align. * * @var string */ protected $hlgn = "(?:\<(?!>)|<>|>|<|(?|\<\>|\=|[()]+(?! ))"; /** * Pattern for vertical align. * * @var string */ protected $vlgn = "[\-^~]"; /** * Pattern for HTML classes and IDs. * * Does not allow classes/ids/languages/styles to span across * newlines if used in a dotall regular expression. * * @var string */ protected $clas = "(?:$[^)\n]+$)"; /** * Pattern for language attribute. * * @var string */ protected $lnge = "(?:\[[^]\n]+\])"; /** * Pattern for style attribute. * * @var string */ protected $styl = "(?:\{[^}\n]+\})"; /** * Regular expression pattern for column spans in tables. * * @var string */ protected $cspn = "(?:\\\\\d+)"; /** * Regular expression for row spans in tables. * * @var string */ protected $rspn = "(?:\/\d+)"; /** * Regular expression for horizontal or vertical alignment. * * @var string */ protected $a; /** * Regular expression for column or row spans in tables. * * @var string */ protected $s; /** * Pattern that matches a class, style, language and horisontal alignment attributes. * * @var string */ protected $c; /** * Pattern that matches class, style and language attributes. * * @var string */ protected $lc; /** * Whitelisted block tags. * * @var array */ protected $blocktag_whitelist = array(); /** * Pattern for punctation. * * @var string */ protected $pnct = '[\!"#\$%&\'()\*\+,\-\./:;<=>\?@\[\\\]\^_`{\|}\~]'; /** * Pattern for URL. * * @var string */ protected $urlch; /** * Matched marker symbols. * * @var string */ protected $syms = '¤§µ¶†‡•∗∴◊♠♣♥♦'; /** * HTML rel attribute used for links. * * @var string */ protected $rel; /** * Array of footnotes * * @var array */ protected $fn; /** * Shelved content. * * Stores fragments of the source text that have been parsed * and require no more processing. * * @var array */ protected $shelf = array(); /** * Restricted mode. * * @var bool */ protected $restricted = false; /** * Disallow images. * * @var bool */ protected $noimage = false; /** * Lite mode. * * @var bool */ protected $lite = false; /** * Accepted link protocols. * * @var array */ protected $url_schemes = array(); /** * Restricted link protocols. * * @var array */ protected $restricted_url_schemes = array( 'http', 'https', 'ftp', 'mailto', ); /** * Unrestricted link protocols. * * @var array */ protected $unrestricted_url_schemes = array( 'http', 'https', 'ftp', 'mailto', 'file', 'tel', 'callto', 'sftp', ); /** * Span tags. * * @var array */ protected $span_tags = array( '*' => 'strong', '**' => 'b', '??' => 'cite', '_' => 'em', '__' => 'i', '-' => 'del', '%' => 'span', '+' => 'ins', '~' => 'sub', '^' => 'sup', ); /** * Patterns for finding glyphs. * * An array of regex patterns used to find text features * such as apostrophes, fractions and em-dashes. Each * entry in this array must have a corresponding entry in * the $glyph_replace array. * * @var null|array * @see Textile::$glyph_replace */ protected $glyph_search = null; /** * Glyph replacements. * * An array of replacements used to insert typographic glyphs * into the text. Each entry must have a corresponding entry in * the $glyph_search array and may refer to values captured in * the corresponding search regex. * * @var null|array * @see Textile::$glyph_search */ protected $glyph_replace = null; /** * Indicates whether glyph substitution is required. * * Dirty flag, set by setSymbol(), indicating the parser needs to * rebuild the glyph substitutions before the next parse. * * @var bool * @see Textile::setSymbol() */ protected $rebuild_glyphs = true; /** * Relative image path. * * @var string */ protected $relativeImagePrefix = ''; /** * Maximum nesting level for inline elements. * * @var int */ protected $max_span_depth = 5; /** * Server document root. * * @var string */ protected $doc_root; /** * Target document type. * * @var string */ protected $doctype; /** * Substitution symbols. * * Basic symbols used in textile glyph replacements. To override these, call * setSymbol method before calling textileThis or textileRestricted. * * @var array * @see Textile::setSymbol() */ protected $symbols = array( 'quote_single_open' => '‘', 'quote_single_close' => '’', 'quote_double_open' => '“', 'quote_double_close' => '”', 'apostrophe' => '’', 'prime' => '′', 'prime_double' => '″', 'ellipsis' => '…', 'emdash' => '—', 'endash' => '–', 'dimension' => '×', 'trademark' => '™', 'registered' => '®', 'copyright' => '©', 'half' => '½', 'quarter' => '¼', 'threequarters' => '¾', 'degrees' => '°', 'plusminus' => '±', 'fn_ref_pattern' => '{marker}', 'fn_foot_pattern' => '{marker}', 'nl_ref_pattern' => '{marker}', ); /** * Dimensionless images flag. * * @var bool */ protected $dimensionless_images = false; /** * Directory separator. * * @var string */ protected $ds = '/'; /** * Whether mbstring extension is installed. * * @var bool */ protected $mb; /** * Multi-byte conversion map. * * @var array */ protected $cmap = array(0x0080, 0xffff, 0, 0xffff); /** * Stores note index. * * @var int */ protected $note_index = 1; /** * Stores unreferenced notes. * * @var array */ protected $unreferencedNotes = array(); /** * Stores note lists. * * @var array */ protected $notelist_cache = array(); /** * Stores notes. * * @var array */ protected $notes = array(); /** * Stores URL references. * * @var array */ protected $urlrefs = array(); /** * Stores span depth. * * @var int */ protected $span_depth = 0; /** * Unique ID used for reference tokens. * * @var string */ protected $uid; /** * Token reference index. * * @var int */ protected $refIndex = 1; /** * Stores references values. * * @var array */ protected $refCache = array(); /** * Matched open and closed quotes. * * @var array */ protected $quotes = array( '"' => '"', "'" => "'", '(' => ')', '{' => '}', '[' => ']', '«' => '»', '»' => '«', '‹' => '›', '›' => '‹', '„' => '“', '‚' => '‘', '‘' => '’', '”' => '“', ); /** * Regular expression that matches starting quotes. * * @var string */ protected $quote_starts; /** * Ordered list starts. * * @var array */ protected $olstarts = array(); /** * Link prefix. * * @var string */ protected $linkPrefix; /** * Link index. * * @var int */ protected $linkIndex = 1; /** * Constructor. * * @param string $doctype The output document type, either 'xhtml' or 'html5' * @example * $parser = new Textile('html'); * echo $parser->textileThis('HTML(HyperText Markup Language)"); */ public function __construct($doctype = 'xhtml') { $doctype_whitelist = array( 'xhtml', 'html5', ); $doctype = strtolower($doctype); if (!in_array($doctype, $doctype_whitelist)) { $this->doctype = 'xhtml'; } else { $this->doctype = $doctype; } $uid = uniqid(rand()); $this->uid = 'textileRef:'.$uid.':'; $this->linkPrefix = $uid.'-'; $this->a = "(?:$this->hlgn|$this->vlgn)*"; $this->s = "(?:$this->cspn|$this->rspn)*"; $this->c = "(?:$this->clas|$this->styl|$this->lnge|$this->hlgn)*"; $this->lc = "(?:$this->clas|$this->styl|$this->lnge)*"; $this->mb = is_callable('mb_strlen'); if (@preg_match('/\pL/u', 'a')) { $this->regex_snippets = array( 'acr' => '\p{Lu}\p{Nd}', 'abr' => '\p{Lu}', 'nab' => '\p{Ll}', 'wrd' => '(?:\p{L}|\p{M}|\p{N}|\p{Pc})', 'mod' => 'u', // Make sure to mark the unicode patterns as such, Some servers seem to need this. 'cur' => '\p{Sc}', ); } else { $this->regex_snippets = array( 'acr' => 'A-Z0-9', 'abr' => 'A-Z', 'nab' => 'a-z', 'wrd' => '\w', 'mod' => '', 'cur' => '', ); } extract($this->regex_snippets); $this->urlch = '['.$wrd.'"$\-_.+!*\'(),";\/?:@=&%#{}|\\^~\[\]`]'; $this->quote_starts = implode('|', array_map('preg_quote', array_keys($this->quotes))); if (defined('DIRECTORY_SEPARATOR')) { $this->ds = constant('DIRECTORY_SEPARATOR'); } if (php_sapi_name() === 'cli') { $this->doc_root = getcwd(); } elseif (!empty($_SERVER['DOCUMENT_ROOT'])) { $this->doc_root = $_SERVER['DOCUMENT_ROOT']; } elseif (!empty($_SERVER['PATH_TRANSLATED'])) { $this->doc_root = $_SERVER['PATH_TRANSLATED']; } $this->doc_root = rtrim($this->doc_root, $this->ds).$this->ds; } /** * Defines a substitution symbol. * * Call this you need to redefine a substitution symbol to * be used when parsing a textile document. * * @param string $name Name of the symbol to assign a new value to. * @param string $value New value for the symbol. * @return object $this */ public function setSymbol($name, $value) { $this->symbols[$name] = $value; $this->rebuild_glyphs = true; return $this; } /** * Gets a symbol definitions. * * This method can be used to get a symbol definition, or an * array containing the full symbol table. * * @param string|null $name The name of the symbol, or NULL if requesting the symbol table * @return array|string The symbol table or the requested symbol * @throws \InvalidArgumentException */ public function getSymbol($name = null) { if ($name !== null) { if (isset($this->symbols[$name])) { return $this->symbols[$name]; } throw new InvalidArgumentException('The specified name does not match any symbols.'); } return $this->symbols; } /** * Sets base image directory path. * * This is used when Textile is supplied with a relative image path. * Allows client systems to have textile convert relative image paths to * absolute or prefixed paths. This method is used to set that base path, * usually a absolute HTTP address pointing to a directory. * * @param string $prefix The string to prefix all relative image paths with * @return object $this * @example * $parser = new Textile(); * $parser->setRelativeImagePrefix('http://static.example.com/'); */ public function setRelativeImagePrefix($prefix = '') { $this->relativeImagePrefix = $prefix; return $this; } /** * Toggles image dimension attributes. * * If $dimensionless is set to TRUE, image width and height attributes * will not be included in rendered image tags. Normally, Textile will add * dimensions height images that specify a relative path, as long * as the image file can be accessed. * * @param bool $dimensionless TRUE to disable image dimensions, FALSE to enable * @return object $this * @example * $parser = new Textile(); * echo $parser->setDimensionlessImages(false)->textileThis('Hello World!'); */ public function setDimensionlessImages($dimensionless = true) { $this->dimensionless_images = (bool) $dimensionless; return $this; } /** * Whether images will get dimensions or not. * * This method will return the state of * the state of the $dimensionless_images property. * * @return bool TRUE if images will not get dimensions, FALSE otherwise * @example * $parser = new Textile(); * if ($parser->getDimensionlessImages() === true) * { * echo 'Images do not get dimensions.'; * } */ public function getDimensionlessImages() { return (bool) $this->dimensionless_images; } /** * Gets Textile version number. * * @return string Version * @example * $parser = new Textile(); * echo $parser->getVersion(); */ public function getVersion() { return $this->ver; } /** * Encodes the given text. * * @param string $text The text to be encoded * @return string The encoded text * @example * $parser = new Textile(); * $parser->textileEncode('Some content to encode.'); */ public function textileEncode($text) { $text = preg_replace("/&(?![#a-z0-9]+;)/i", "x%x%", $text); $text = str_replace("x%x%", "&", $text); return $text; } /** * Parses the given Textile input in un-restricted mode. * * This method should be used to parse any trusted Textile * input, such as articles created by well-known * authorised users. * * This method allows users to mix raw HTML and Textile. * If you want to parse untrusted input, see the * textileRestricted method instead. Using this less * restrictive method on untrusted input, like comments * and forum posts, will lead to XSS issues, as users * will be able to use any HTML code, JavaScript links * and Textile attributes in their input. * * @param string $text The Textile input to parse * @param bool $lite Switch to lite mode * @param bool $encode Encode input and return * @param bool $noimage Disables images * @param bool $strict This argument is ignored * @param string $rel Relationship attribute applied to generated links * @return string Parsed $text * @see Textile::textileRestricted() * @example * $parser = new Textile(); * echo $parser->textileThis('h1. Hello World!'); */ public function textileThis($text, $lite = false, $encode = false, $noimage = false, $strict = false, $rel = '') { $this->prepare($lite, $noimage, $rel); $this->url_schemes = $this->unrestricted_url_schemes; if ($encode) { trigger_error('Use of the $encode argument is discouraged. Use Parser::textileEncode() instead.', E_DEPRECATED); return $this->textileEncode($text); } return $this->textileCommon($text, $lite); } /** * Parses the given Textile input in restricted mode. * * This method should be used for any untrusted user input, * including comments or forum posts. * * This method escapes any raw HTML input, ignores unsafe * attributes, links only whitelisted URL schemes * and by default also prevents the use of images and * extra Textile formatting, accepting only paragraphs * and blockquotes as valid block tags. * * @param string $text The Textile input to parse * @param bool $lite Controls lite mode, allowing extra formatting * @param bool $noimage Allow images * @param string $rel Relationship attribute applied to generated links * @return string Parsed $text * @see Textile::textileThis() * @example * $parser = new Textile(); * echo $parser->textileRestricted('h1. Hello World!'); */ public function textileRestricted($text, $lite = true, $noimage = true, $rel = 'nofollow') { $this->prepare($lite, $noimage, $rel); $this->url_schemes = $this->restricted_url_schemes; $this->restricted = true; // Escape any raw html $text = $this->encodeHTML($text, 0); return $this->textileCommon($text, $lite); } /** * Parses Textile syntax. * * This method performs common parse actions. * * @param string $text The input to parses * @param bool $lite Controls lite mode * @return string Parsed input */ protected function textileCommon($text, $lite) { $text = $this->cleanWhiteSpace($text); $text = str_replace($this->uid, '', $text); if ($lite) { $this->blocktag_whitelist = array('bq', 'p'); $text = $this->blocks($text."\n\n"); } else { $this->blocktag_whitelist = array('bq', 'p', 'bc', 'notextile', 'pre', 'h[1-6]', 'fn\d+', '###'); $text = $this->blocks($text); $text = $this->placeNoteLists($text); } $text = $this->retrieve($text); $text = $this->replaceGlyphs($text); $text = $this->retrieveTags($text); $text = $this->retrieveURLs($text); $text = str_replace("
", "
\n", $text); return $text; } /** * Prepares the glyph patterns from the symbol table. * * @see Textile::setSymbol() * @see Textile::getSymbol() */ protected function prepGlyphs() { if ($this->rebuild_glyphs === false) { return; } extract($this->symbols, EXTR_PREFIX_ALL, 'txt'); extract($this->regex_snippets); $pnc = '[[:punct:]]'; if ($cur) { $cur = '(?:['.$cur.']\s*)?'; } $this->glyph_search = array( '/([0-9]+[\])]?[\'"]? ?)[xX]( ?[\[(]?)(?=[+-]?'.$cur.'[0-9]*\.?[0-9]+)/'.$mod, // Dimension sign '/('.$wrd.'|\))\'('.$wrd.')/'.$mod, // I'm an apostrophe '/(\s)\'(\d+'.$wrd.'?)\b(?![.]?['.$wrd.']*?\')/'.$mod, // Back in '88/the '90s but not in his '90s', '1', '1.' '10m' or '5.png' "/([([{])'(?=\S)/".$mod, // Single open following open bracket '/(\S)\'(?=\s|'.$pnc.'|<|$)/'.$mod, // Single closing "/'/", // Default single opening '/([([{])"(?=\S)/'.$mod, // Double open following an open bracket. Allows things like Hello ["(Mum) & dad"] '/(\S)"(?=\s|'.$pnc.'|<|$)/'.$mod, // Double closing '/"/', // Default double opening '/\b(['.$abr.']['.$acr.']{2,})\b(?:[(]([^)]*)[)])/'.$mod, // 3+ uppercase acronym '/(?<=\s|^|[>(;-])(['.$abr.']{3,})(['.$nab.']*)(?=\s|'.$pnc.'|<|$)(?=[^">]*?(<|$))/'.$mod, // 3+ uppercase '/([^.]?)\.{3}/', // Ellipsis '/--/', // em dash '/ - /', // en dash '/(\b ?|\s|^)[([]TM[])]/i'.$mod, // Trademark '/(\b ?|\s|^)[([]R[])]/i'.$mod, // Registered '/(\b ?|\s|^)[([]C[])]/i'.$mod, // Copyright '/[([]1\/4[])]/', // 1/4 '/[([]1\/2[])]/', // 1/2 '/[([]3\/4[])]/', // 3/4 '/[([]o[])]/', // Degrees -- that's a small 'oh' '/[([]\+\/-[])]/', // Plus minus ); $this->glyph_replace = array( '$1'.$txt_dimension.'$2', // Dimension sign '$1'.$txt_apostrophe.'$2', // I'm an apostrophe '$1'.$txt_apostrophe.'$2', // Back in '88 '$1'.$txt_quote_single_open, // Single open following open bracket '$1'.$txt_quote_single_close, // Single closing $txt_quote_single_open, // Default single opening '$1'.$txt_quote_double_open, // Double open following open bracket '$1'.$txt_quote_double_close, // Double closing $txt_quote_double_open, // Default double opening (('html5' === $this->doctype) ? '$1' : '$1'), // 3+ uppercase acronym ''.$this->uid.':glyph:$1$2', // 3+ uppercase '$1'.$txt_ellipsis, // Ellipsis $txt_emdash, // em dash ' '.$txt_endash.' ', // en dash '$1'.$txt_trademark, // Trademark '$1'.$txt_registered, // Registered '$1'.$txt_copyright, // Copyright $txt_quarter, // 1/4 $txt_half, // 1/2 $txt_threequarters, // 3/4 $txt_degrees, // Degrees $txt_plusminus, // Plus minus ); $this->rebuild_glyphs = false; // No need to rebuild next run unless a symbol is redefined } /** * Prepares the parser for parsing. * * This method prepares the transient internal state of * Textile parser in preparation for parsing a new document. * * @param bool $lite Controls lite mode * @param bool $noimage Disallow images * @param string $rel A relationship attribute applied to links */ protected function prepare($lite, $noimage, $rel) { if ($this->linkIndex >= 1000000) { $this->linkPrefix .= '-'; $this->linkIndex = 1; } $this->unreferencedNotes = array(); $this->notelist_cache = array(); $this->notes = array(); $this->urlrefs = array(); $this->shelf = array(); $this->fn = array(); $this->span_depth = 0; $this->refIndex = 1; $this->refCache = array(); $this->note_index = 1; $this->rel = $rel; $this->lite = $lite; $this->noimage = $noimage; $this->prepGlyphs(); } /** * Cleans a HTML attribute value. * * This method checks for presence of URL encoding in the value. * If the number encoded characters exceeds the thereshold, * the input is discarded. Otherwise the encoded * instances are decoded. * * This method also strips any ", ' and = characters * from the given value. This method does not guarantee * valid HTML or full sanitization. * * @param string $in The input string * @return string Cleaned string */ protected function cleanAttribs($in) { $tmp = $in; $before = -1; $after = 0; $max = 3; $i = 0; while (($after != $before) && ($i < $max)) { $before = strlen($tmp); $tmp = rawurldecode($tmp); $after = strlen($tmp); $i++; } if ($i === $max) { // If we hit the max allowed decodes, assume the input is tainted and consume it. $out = ''; } else { $out = str_replace(array('"', "'", '='), '', $tmp); } return $out; } /** * Constructs a HTML tag from an object. * * This is a helper method that creates a new * instance. * * @param string $name The HTML element name * @param array $atts HTML attributes applied to the tag * @param bool $selfclosing Determines if the tag should be selfclosing * @return Tag */ protected function newTag($name, $atts, $selfclosing = true) { return new TextileTag($name, $atts, $selfclosing); } /** * Parses Textile attributes. * * @param string $in The Textile attribute string to be parsed * @param string $element Focus the routine to interpret the attributes as applying to a specific HTML tag * @param bool $include_id If FALSE, IDs are not included in the attribute list * @param string $autoclass An additional classes applied to the output * @return string HTML attribute list * @see Textile::parseAttribsToArray() */ protected function parseAttribs($in, $element = '', $include_id = true, $autoclass = '') { $o = $this->parseAttribsToArray($in, $element, $include_id, $autoclass); return $this->formatAttributeString($o); } /** * Converts an array of named attribute => value mappings to a string. * * @param array $attribute_array * @return string */ protected function formatAttributeString(array $attribute_array) { $out = ''; if (count($attribute_array)) { foreach ($attribute_array as $k => $v) { $out .= " $k=\"$v\""; } } return $out; } /** * Parses Textile attributes into an array. * * @param string $in The Textile attribute string to be parsed * @param string $element Focus the routine to interpret the attributes as applying to a specific HTML tag * @param bool $include_id If FALSE, IDs are not included in the attribute list * @param string $autoclass An additional classes applied to the output * @return array HTML attributes as key => value mappings * @see Textile::parseAttribs() */ protected function parseAttribsToArray($in, $element = '', $include_id = true, $autoclass = '') { $style = ''; $class = ''; $lang = ''; $colspan = ''; $rowspan = ''; $span = ''; $width = ''; $id = ''; $atts = ''; $align = ''; $matched = $in; if ($element == 'td') { if (preg_match("/\\\$\d+)/", $matched, $csp)) { $colspan = $csp[1]; } if (preg_match("/\/(\d+)/", $matched, $rsp)) { $rowspan = $rsp[1]; } } if ($element == 'td' or $element == 'tr') { if (preg_match("/($this->vlgn)/", $matched, $vert)) { $style[] = "vertical-align:" . $this->vAlign($vert[1]); } } if (preg_match("/\{([^}]*)\}/", $matched, $sty)) { $style[] = rtrim($sty[1], ';'); $matched = str_replace($sty[0], '', $matched); } if (preg_match("/\[([^]]+)\]/U", $matched, $lng)) { $matched = str_replace($lng[0], '', $matched); // Consume entire lang block -- valid or invalid... if (preg_match("/\[([a-zA-Z]{2}(?:[\-\_][a-zA-Z]{2})?)\]/U", $lng[0], $lng)) { $lang = $lng[1]; } } if (preg_match("/\(([^()]+)$/U", $matched, $cls)) { $class_regex = "/^([-a-zA-Z 0-9_\.]*)$/"; $matched = str_replace($cls[0], '', $matched); // Consume entire class block -- valid or invalid... // Only allow a restricted subset of the CSS standard characters for classes/ids. No encoding markers allowed... if (preg_match("/$([-a-zA-Z 0-9_\.\:\#]+)$/U", $cls[0], $cls)) { $hashpos = strpos($cls[1], '#'); // If a textile class block attribute was found with a '#' in it // split it into the css class and css id... if (false !== $hashpos) { if (preg_match("/#([-a-zA-Z0-9_\.\:]*)$/", substr($cls[1], $hashpos), $ids)) { $id = $ids[1]; } if (preg_match($class_regex, substr($cls[1], 0, $hashpos), $ids)) { $class = $ids[1]; } } else { if (preg_match($class_regex, $cls[1], $ids)) { $class = $ids[1]; } } } } if (preg_match("/([(]+)/", $matched, $pl)) { $style[] = "padding-left:" . strlen($pl[1]) . "em"; $matched = str_replace($pl[0], '', $matched); } if (preg_match("/([)]+)/", $matched, $pr)) { $style[] = "padding-right:" . strlen($pr[1]) . "em"; $matched = str_replace($pr[0], '', $matched); } if (preg_match("/($this->hlgn)/", $matched, $horiz)) { $style[] = "text-align:" . $this->hAlign($horiz[1]); } if ($element == 'col') { if (preg_match("/(?:\\\\(\d+))?\s*(\d+)?/", $matched, $csp)) { $span = isset($csp[1]) ? $csp[1] : ''; $width = isset($csp[2]) ? $csp[2] : ''; } } if ($this->restricted) { $o = array(); $class = trim($autoclass); if ($class) { $o['class'] = $this->cleanAttribs($class); } if ($lang) { $o['lang'] = $this->cleanAttribs($lang); } ksort($o); return $o; } else { $class = trim($class . ' ' . $autoclass); } $o = ''; if ($style) { $tmps = array(); foreach ($style as $s) { $parts = explode(';', $s); foreach ($parts as $p) { $tmps[] = $p; } } sort($tmps); foreach ($tmps as $p) { if (!empty($p)) { $o .= $p.';'; } } $style = trim(str_replace(array("\n", ';;'), array('', ';'), $o)); } $o = array(); if ($class) { $o['class'] = $this->cleanAttribs($class); } if ($colspan) { $o['colspan'] = $this->cleanAttribs($colspan); } if ($id && $include_id) { $o['id'] = $this->cleanAttribs($id); } if ($lang) { $o['lang'] = $this->cleanAttribs($lang); } if ($rowspan) { $o['rowspan'] = $this->cleanAttribs($rowspan); } if ($span) { $o['span'] = $this->cleanAttribs($span); } if ($style) { $o['style'] = $this->cleanAttribs($style); } if ($width) { $o['width'] = $this->cleanAttribs($width); } ksort($o); return $o; } /** * Checks whether the text is not enclosed by a block tag. * * @param string $text The input string * @return bool TRUE if the text is not enclosed */ protected function hasRawText($text) { $r = trim(preg_replace('@<(p|hr|br|img|blockquote|div|form|table|ul|ol|dl|pre|h\d)[^>]*?'.chr(62).'.*]*?>@si', '', trim($text))); $r = trim(preg_replace('@<(br|hr|img)[^>]*?/?>@i', '', $r)); return '' != $r; } /** * Parses textile table structures into HTML. * * @param string $text The textile input * @return string The parsed text */ protected function tables($text) { $text = $text . "\n\n"; return preg_replace_callback("/^(?:table(_?{$this->s}{$this->a}{$this->c})\.(.*)?\n)?^({$this->a}{$this->c}\.? ?\|.*\|)[\s]*\n\n/smU", array(&$this, "fTable"), $text); } /** * Constructs a HTML table from a textile table structure. * * This method is used by Parser::tables() to process * found table structures. * * @param array $matches * @return string HTML table * @see Textile::tables() */ protected function fTable($matches) { $tatts = $this->parseAttribs($matches[1], 'table'); $sum = trim($matches[2]) ? ' summary="'.htmlspecialchars(trim($matches[2]), ENT_QUOTES, 'UTF-8').'"' : ''; $cap = ''; $colgrp = ''; $last_rgrp = ''; $c_row = 1; foreach (preg_split("/\|\s*?$/m", $matches[3], -1, PREG_SPLIT_NO_EMPTY) as $row) { $row = ltrim($row); // Caption -- can only occur on row 1, otherwise treat '|=. foo |...' // as a normal center-aligned cell. if (($c_row <= 1) && preg_match("/^\|\=($this->s$this->a$this->c)\. ([^\n]*)(.*)/s", ltrim($row), $cmtch)) { $capts = $this->parseAttribs($cmtch[1]); $cap = "\t".trim($cmtch[2])."\n"; $row = ltrim($cmtch[3]); if (empty($row)) { continue; } } $c_row += 1; // Colgroup if (preg_match("/^\|:($this->s$this->a$this->c\. .*)/m", ltrim($row), $gmtch)) { // Is this colgroup def missing a closing pipe? If so, there // will be a newline in the middle of $row somewhere. $nl = strpos($row, "\n"); $idx = 0; foreach (explode('|', str_replace('.', '', $gmtch[1])) as $col) { $gatts = $this->parseAttribs(trim($col), 'col'); $colgrp .= "\t" : $gatts." />")."\n"; $idx++; } $colgrp .= "\t\n"; if ($nl === false) { continue; } else { // Recover from our missing pipe and process the rest of the line. $row = ltrim(substr($row, $nl)); } } preg_match("/(:?^\|($this->vlgn)($this->s$this->a$this->c)\.\s*$\n)?^(.*)/sm", ltrim($row), $grpmatch); // Row group $rgrp = isset($grpmatch[2]) ? (($grpmatch[2] == '^') ? 'head' : (($grpmatch[2] == '~') ? 'foot' : (($grpmatch[2] == '-') ? 'body' : ''))) : ''; $rgrpatts = isset($grpmatch[3]) ? $this->parseAttribs($grpmatch[3]) : ''; $row = $grpmatch[4]; if (preg_match("/^($this->a$this->c\. )(.*)/m", ltrim($row), $rmtch)) { $ratts = $this->parseAttribs($rmtch[1], 'tr'); $row = $rmtch[2]; } else { $ratts = ''; } $cells = array(); $cellctr = 0; foreach (explode("|", $row) as $cell) { $ctyp = "d"; if (preg_match("/^_(?=[\s[:punct:]])/", $cell)) { $ctyp = "h"; } if (preg_match("/^(_?$this->s$this->a$this->c\. )(.*)/", $cell, $cmtch)) { $catts = $this->parseAttribs($cmtch[1], 'td'); $cell = $cmtch[2]; } else { $catts = ''; } if (!$this->lite) { $a = array(); if (preg_match('/(\s*)(.*)/s', $cell, $a)) { $cell = $this->redclothLists($a[2]); $cell = $this->textileLists($cell); $cell = $a[1] . $cell; } } if ($cellctr > 0) { // Ignore first 'cell': it precedes the opening pipe $cells[] = $this->doTagBr("t$ctyp", "\t\t\t$cell"); } $cellctr++; } $grp = (($rgrp && $last_rgrp) ? "\t\n" : '') . (($rgrp) ? "\t\n" : ''); $last_rgrp = ($rgrp) ? $rgrp : $last_rgrp; $rows[] = $grp."\t\t\n" . join("\n", $cells) . ($cells ? "\n" : "") . "\t\t"; unset($cells, $catts); } return "\n" .$cap. $colgrp. join("\n", $rows) . "\n".(($last_rgrp) ? "\t\n" : '')."\n\n"; } /** * Parses RedCloth-style definition lists into HTML. * * @param string $text The textile input * @return string The parsed text */ protected function redclothLists($text) { return preg_replace_callback("/^([-]+$this->lc[ .].*:=.*)$(?![^-])/smU", array(&$this, "fRedclothList"), $text); } /** * Constructs a HTML definition list from a RedCloth-style definition structure. * * This method is used by Parser::redclothLists() to process * found definition list structures. * * @param array $m * @return string HTML definition list * @see Textile::redclothLists() */ protected function fRedclothList($m) { $in = $m[0]; $out = array(); $text = preg_split('/\n(?=[-])/m', $in); foreach ($text as $nr => $line) { $m = array(); if (preg_match("/^[-]+($this->lc)\.? (.*)$/s", $line, $m)) { list(, $atts, $content) = $m; $content = trim($content); $atts = $this->parseAttribs($atts); if (!preg_match("/^(.*?)[\s]*:=(.*?)[\s]*(=:|:=)?[\s]*$/s", $content, $xm)) { $xm = array( $content, $content, '' ); } list(, $term, $def,) = $xm; $term = trim($term); $def = trim($def, ' '); if (empty($out)) { if (''==$def) { $out[] = ""; } else { $out[] = '

'; } } if ('' != $term) { $pos = strpos($def, "\n"); $def = str_replace("\n", "
", trim($def)); if (0 === $pos) { $def = '

' . $def . '

'; } $term = str_replace("\n", "
", $term); $term = $this->graf($term); $def = $this->graf($def); $out[] = "\t$term"; if ($def) { $out[] = "\t

$def

"; } } } } $out[] = ''; return implode("\n", $out); } /** * Parses textile list structures into HTML. * * Searches for ordered, un-ordered and definition lists in the * textile input and generates HTML lists for them. * * @param string $text The textile input * @return string The parsed text */ protected function textileLists($text) { return preg_replace_callback("/^((?:[*;:]+|[*;:#]*#(?:_|\d+)?)$this->lc[ .].*)$(?![^#*;:])/smU", array(&$this, "fTextileList"), $text); } /** * Constructs a HTML list from a textile list structure. * * This method is used by Parser::textileLists() to process * found list structures. * * @param array $m * @return string HTML list * @see Textile::textileLists() */ protected function fTextileList($m) { $text = preg_split('/\n(?=[*#;:])/m', $m[0]); $pt = ''; foreach ($text as $nr => $line) { $nextline = isset($text[$nr+1]) ? $text[$nr+1] : false; if (preg_match("/^([#*;:]+)(_|\d+)?($this->lc)[ .](.*)$/s", $line, $m)) { list(, $tl, $st, $atts, $content) = $m; $content = trim($content); $nl = ''; $ltype = $this->liType($tl); $litem = (strpos($tl, ';') !== false) ? 'dt' : ((strpos($tl, ':') !== false) ? 'dd' : 'li'); $showitem = (strlen($content) > 0); if ('o' === $ltype) { // Handle list continuation/start attribute on ordered lists... if (!isset($this->olstarts[$tl])) { $this->olstarts[$tl] = 1; } if (strlen($tl) > strlen($pt)) { // First line of this level of ol -- has a start attribute? if ('' == $st) { $this->olstarts[$tl] = 1; // No => reset count to 1. } elseif ('_' !== $st) { $this->olstarts[$tl] = (int) $st; // Yes, and numeric => reset to given. // TRICKY: the '_' continuation marker just means // output the count so don't need to do anything // here. } } if ((strlen($tl) > strlen($pt)) && '' !== $st) { // Output the start attribute if needed... $st = ' start="' . $this->olstarts[$tl] . '"'; } if ($showitem) { // TRICKY: Only increment the count for list items; not when a list definition line is encountered. $this->olstarts[$tl] += 1; } } if (preg_match("/^([#*;:]+)(_|[\d]+)?($this->lc)[ .].*/", $nextline, $nm)) { $nl = $nm[1]; } if ((strpos($pt, ';') !== false) && (strpos($tl, ':') !== false)) { $lists[$tl] = 2; // We're already in a

so flag not to start another } $tabs = str_repeat("\t", strlen($tl)-1); $atts = $this->parseAttribs($atts); if (!isset($lists[$tl])) { $lists[$tl] = 1; $line = "$tabs<" . $ltype . "l$atts$st>" . (($showitem) ? "\n$tabs\t<$litem>" . $content : ''); } else { $line = ($showitem) ? "$tabs\t<$litem$atts>" . $content : ''; } if ((strlen($nl) <= strlen($tl))) { $line .= (($showitem) ? "" : ''); } foreach (array_reverse($lists) as $k => $v) { if (strlen($k) > strlen($nl)) { $line .= ($v==2) ? '' : "\n$tabsliType($k) . "l>"; if ((strlen($k) > 1) && ($v != 2)) { $line .= ""; } unset($lists[$k]); } } $pt = $tl; // Remember the current Textile tag } else { $line .= "\n"; } $out[] = $line; } $out = implode("\n", $out); return $this->doTagBr($litem, $out); } /** * Determines the list type from the textile input symbol. * * @param string $in Textile input containing the possible list marker * @return string Either 'd', 'o', 'u' */ protected function liType($in) { $m = array(); $type = 'd'; if (preg_match('/^([#*]+)/', $in, $m)) { $type = ('#' === substr($m[1], -1)) ? 'o' : 'u'; } return $type; } /** * Adds br tags within the specified container tag. * * @param string $tag The tag * @param string $in The input * @return string */ protected function doTagBr($tag, $in) { return preg_replace_callback('@<('.preg_quote($tag).')([^>]*?)>(.*)()@s', array(&$this, 'fBr'), $in); } /** * Adds br tags to paragraphs and headings. * * @param string $in The input * @return string */ protected function doPBr($in) { return preg_replace_callback('@<(p|h[1-6])([^>]*?)>(.*)()@s', array(&$this, 'fPBr'), $in); } /** * Less restrictive version of fBr method. * * Used only in paragraphs and headings where the next row may * start with a smiley or perhaps something like '#8 bolt...' * or '*** stars...'. * * @param string $m The input * @return string */ protected function fPBr($m) { // Replaces
\n instances that are not followed by white-space, // or at end, with single LF. $content = preg_replace("~\s*\n(?![\s|])~i", "\n", $m[3]); // Replaces those LFs that aren't followed by white-space, or at end, with
. $content = preg_replace("/\n(?![\s|])/", '
', $content); return '<'.$m[1].$m[2].'>'.$content.$m[4]; } /** * Formats line breaks. * * @param string $m The input * @return string */ protected function fBr($m) { $content = preg_replace("@(.+)(?|
|||)\n(?![#*;:\s|])@", '$1
', $m[3]); return '<'.$m[1].$m[2].'>'.$content.$m[4]; } /** * Splits the given input into blocks. * * Blocks are separated by double line-break boundaries, and processed * the blocks one by one. * * @param string $text Textile source text * @return string Input text with blocks processed */ protected function blocks($text) { $blocktags = join('|', $this->blocktag_whitelist); $textblocks = preg_split('/(\n{2,})/', $text, null, PREG_SPLIT_DELIM_CAPTURE); $tag = 'p'; $atts = ''; $cite = ''; $graf = ''; $ext = ''; $eat = false; $whitespace = ''; $eatWhitespace = false; $out = array(); foreach ($textblocks as $key => $block) { // Line is just whitespace, keep it for the next block. if (trim($block) === '') { if ($eatWhitespace === false) { $whitespace .= $block; } continue; } $eatWhitespace = false; $anon = 0; if (preg_match("/^($blocktags)($this->a$this->c)\.(\.?)(?::(\S+))? (.*)$/Ss", $block, $m)) { // Last block was extended, so close it if ($ext) { $out[count($out)-1] .= $c1; } // New block list(, $tag, $atts, $ext, $cite, $graf) = $m; list($o1, $o2, $content, $c2, $c1, $eat) = $this->fBlock(array(0, $tag, $atts, $ext, $cite, $graf)); // Leave off c1 if this block is extended, we'll close it at the start of the next block if ($ext) { $block = $o1.$o2.$content.$c2; } else { $block = $o1.$o2.$content.$c2.$c1; } } else { // Anonymous block $anon = 1; if ($ext || !preg_match('/^ /', $block)) { list($o1, $o2, $content, $c2, $c1, $eat) = $this->fBlock(array(0, $tag, $atts, $ext, $cite, $block)); // Skip $o1/$c1 because this is part of a continuing extended block if ($tag == 'p' && !$this->hasRawText($content)) { $block = $content; } else { $block = $o2.$content.$c2; } } else { $block = $this->graf($block); } } $block = $this->doPBr($block); $block = $whitespace . preg_replace('/
/', '
', $block); if ($ext && $anon) { $out[count($out)-1] .= $block; } elseif (!$eat) { $out[] = $block; } if ($eat) { $eatWhitespace = true; } else { $whitespace = ''; } if (!$ext) { $tag = 'p'; $atts = ''; $cite = ''; $graf = ''; $eat = false; } } if ($ext) { $out[count($out)-1] .= $c1; } return join('', $out); } /** * Formats the given block. * * Adds block tags and formats the text content inside * the block. * * @param string $m The block content to format * @return array */ protected function fBlock($m) { list(, $tag, $att, $ext, $cite, $content) = $m; $atts = $this->parseAttribs($att); $o1 = ''; $o2 = ''; $c2 = ''; $c1 = ''; $eat = false; if ($tag === 'p') { // Is this an anonymous block with a note definition? $notedef = preg_replace_callback( "/ ^note\# # start of note def marker ([^%<*!@#^([{ \s.]+) # !label ([*!^]?) # !link ({$this->c}) # !att \.? # optional period. [\s]+ # whitespace ends def marker (.*)$ # !content /x".$this->regex_snippets['mod'], array(&$this, "fParseNoteDefs"), $content ); if ('' === $notedef) { // It will be empty if the regex matched and ate it. return array($o1, $o2, $notedef, $c2, $c1, true); } } if (preg_match("/fn(\d+)/", $tag, $fns)) { $tag = 'p'; $fnid = empty($this->fn[$fns[1]]) ? $this->linkPrefix . ($this->linkIndex++) : $this->fn[$fns[1]]; // If there is an author-specified ID goes on the wrapper & the auto-id gets pushed to the ^{$supp_id = '';
if (strpos($atts, 'class=') === false) {
$atts .= ' class="footnote"';
}

if (strpos($atts, ' id=') === false) {
$atts .= ' id="fn' . $fnid . '"';
} else {
$supp_id = ' id="fn' . $fnid . '"';
}

$sup = (strpos($att, '^') === false) ? $this->formatFootnote($fns[1], $supp_id) : $this->formatFootnote(''.$fns[1] .'', $supp_id);

$content = $sup . ' ' . $content;
}

if ($tag == "bq") {
$cite = $this->shelveURL($cite);
$cite = ($cite != '') ? ' cite="' . $cite . '"' : '';
$o1 = "\n";
$o2 = "\tparseAttribs($att, '', 0).">";
$c2 = "";
$c1 = "\n";
} elseif ($tag == 'bc') {
$o1 = "";
$c1 = "";
$content = $this->shelve($this->rEncodeHTML($content));
} elseif ($tag == 'notextile') {
$content = $this->shelve($content);
$o1 = '';
$o2 = '';
$c1 = '';
$c2 = '';
} elseif ($tag == 'pre') {
$content = $this->shelve($this->rEncodeHTML($content));
$o1 = "";
$o2 = '';
$c2 = '';
$c1 = "";
} elseif ($tag == '###') {
$eat = true;
} else {
$o2 = "<$tag$atts>";
$c2 = "";
}

$content = (!$eat) ? $this->graf($content) : '';

return array($o1, $o2, $content, $c2, $c1, $eat);
}

/**
* Formats a footnote.
*
* @param string $marker The marker
* @param string $atts Attributes
* @param bool $anchor TRUE, if its a reference link
* @return string Processed footnote
*/

protected function formatFootnote($marker, $atts = '', $anchor = true)
{
$pattern = ($anchor) ? $this->symbols['fn_foot_pattern'] : $this->symbols['fn_ref_pattern'];
return $this->replaceMarkers($pattern, array('atts' => $atts, 'marker' => $marker));
}

/**
* Replaces markers with replacements in the given input.
*
* @param string $text The input
* @param array $replacements Marker replacement pairs
* @return string
*/

protected function replaceMarkers($text, $replacements)
{
if (!empty($replacements)) {
foreach ($replacements as $k => $r) {
$text = str_replace('{'.$k.'}', $r, $text);
}
}
return $text;
}

/**
* Parses HTML comments in the given input.
*
* This method finds HTML comments in the given input
* and replaces them with reference tokens.
*
* @param string $text Textile input
* @return string $text Processed input
*/

protected function getHTMLComments($text)
{
$text = preg_replace_callback(
"/\/sx",
array(&$this, "fParseHTMLComments"),
$text
);
return $text;
}

/**
* Formats a HTML comment.
*
* Stores the comment on the shelf and returns
* a reference token wrapped in to a HTML comment.
*
* @param array $m Options
* @return string Reference token wrapped to a HTML comment tags
*/

protected function fParseHTMLComments($m)
{
if ($this->restricted) {
$m['content'] = $this->rEncodeHTML($m['content']);
}

return '';
}

/**
* Parses paragraphs in the given input.
*
* @param string $text Textile input
* @return string Processed input
*/

protected function graf($text)
{
// Handle normal paragraph text
if (!$this->lite) {
$text = $this->noTextile($text); // Notextile blocks and inlines
$text = $this->code($text); // Handle code
}

$text = $this->getHTMLComments($text); // HTML comments --
$text = $this->getRefs($text); // Consume link aliases
$text = $this->glyphQuotedQuote($text); // Treat quoted quote as a special glyph.
$text = $this->links($text); // Generate links

if (!$this->noimage) {
$text = $this->images($text); // Handle images (if permitted)
}

if (!$this->lite) {
$text = $this->tables($text); // Handle tables
$text = $this->redclothLists($text); // Handle redcloth-style definition lists
$text = $this->textileLists($text); // Handle ordered & unordered lists plus txp-style definition lists
}

$text = $this->spans($text); // Inline markup (em, strong, sup, sub, del etc)

if (!$this->lite) {
// Turn footnote references into supers or links. As footnote blocks are banned in lite mode there is no point generating links for them
$text = $this->footnoteRefs($text);

// Turn note references into links
$text = $this->noteRefs($text);
}

$text = $this->glyphs($text); // Glyph level substitutions (mainly typographic -- " & ' => curly quotes, -- => em-dash etc.

return rtrim($text, "\n");
}

/**
* Replaces Textile span tags with their equivalent HTML inline tags.
*
* @param string $text The Textile document to perform the replacements in
* @return string The textile document with spans replaced by their HTML inline equivalents
*/

protected function spans($text)
{
$span_tags = array_keys($this->span_tags);
$pnct = ".,\"'?!;:‹›«»„“”‚‘’";
$this->span_depth++;

if ($this->span_depth <= $this->max_span_depth) {
foreach ($span_tags as $tag) {
$tag = preg_quote($tag);
$text = preg_replace_callback(
"/
(?P^|(?<=[\s>$pnct$])|[{[])
(?P$tag)(?!$tag)
(?P{$this->lc})
(?!$tag)
(?::(?P\S+[^$tag]\s))?
(?P[^\s$tag]+|\S.*?[^\s$tag\n])
(?P[$pnct]*)
$tag
(?P$|[\[\]}<]|(?=[$pnct]{1,2}[^0-9]|\s|$))
/x".$this->regex_snippets['mod'],
array(&$this, "fSpan"),
$text
);
}
}
$this->span_depth--;
return $text;
}

/**
* Formats a span tag and stores it on the shelf.
*
* @param array $m Options
* @return string Content wrapped to reference tokens
* @see Textile::spans()
*/

protected function fSpan($m)
{
$tag = $this->span_tags[$m['tag']];
$atts = $this->parseAttribsToArray($m['atts']);

if ($m['cite'] != '') {
$atts['cite'] = trim($m['cite']);
ksort($atts);
}

$atts = $this->formatAttributeString($atts);
$content = $this->spans($m['content']);
$opentag = '<'.$tag.$atts.'>';
$closetag = '';
$tags = $this->storeTags($opentag, $closetag);
$out = "{$tags['open']}{$content}{$m['end']}{$tags['close']}";

if (($m['pre'] && !$m['tail']) || ($m['tail'] && !$m['pre'])) {
$out = $m['pre'].$out.$m['tail'];
}

return $out;
}

/**
* Stores a tag pair in the tag cache.
*
* @param string $opentag Opening tag
* @param string $closetag Closing tag
* @return array Reference tokens for both opening and closing tag
*/

protected function storeTags($opentag, $closetag = '')
{
$tags = array();

$this->refCache[$this->refIndex] = $opentag;
$tags['open'] = $this->uid.$this->refIndex.':ospan ';
$this->refIndex++;

$this->refCache[$this->refIndex] = $closetag;
$tags['close'] = ' '.$this->uid.$this->refIndex.':cspan';
$this->refIndex++;

return $tags;
}

/**
* Replaces reference tokens with corresponding shelved span tags.
*
* This method puts all shelved span tags back to the final,
* parsed input.
*
* @param string $text The input
* @return string Processed text
* @see Textile::storeTags()
*/

protected function retrieveTags($text)
{
$text = preg_replace_callback('/'.$this->uid.'(?P\d+):ospan /', array(&$this, 'fRetrieveTags'), $text);
$text = preg_replace_callback('/ '.$this->uid.'(?P\d+):cspan/', array(&$this, 'fRetrieveTags'), $text);
return $text;
}

/**
* Retrieves a tag from the tag cache.
*
* @param array $m Options
* @return string
* @see Textile::retrieveTags()
*/

protected function fRetrieveTags($m)
{
return $this->refCache[$m['token']];
}

/**
* Parses note lists in the given input.
*
* This method should be ran after other blocks
* have been processed, but before reference tokens
* have been replaced with their replacements.
*
* @param string $text Textile input
* @return string Processed input
*/

protected function placeNoteLists($text)
{
extract($this->regex_snippets);

// Sequence all referenced definitions...
if (!empty($this->notes)) {
$o = array();
foreach ($this->notes as $label => $info) {
if (!empty($info['seq'])) {
$o[$info['seq']] = $info;
$info['seq'] = $label;
} else {
$this->unreferencedNotes[] = $info; // Unreferenced definitions go here for possible future use.
}
}

if (!empty($o)) {
ksort($o);
}

$this->notes = $o;
}

// Replace list markers...
$text = preg_replace_callback("@notelist(?P{$this->c})(?:\:(?P[$wrd|{$this->syms}]))?(?P[\^!]?)(?P\+?)\.?[\s]*@U$mod", array(&$this, "fNoteLists"), $text);

return $text;
}

/**
* Formats a note list.
*
* @param array $m Options
* @return string Processed note list
*/

protected function fNoteLists($m)
{
if (!$m['startchar']) {
$m['startchar'] = 'a';
}

$index = $m['links'].$m['extras'].$m['startchar'];

if (empty($this->notelist_cache[$index])) {
// If not in cache, build the entry...
$out = array();

if (!empty($this->notes)) {
foreach ($this->notes as $seq => $info) {
$links = $this->makeBackrefLink($info, $m['links'], $m['startchar']);
$atts = '';
if (!empty($info['def'])) {
$id = $info['id'];
extract($info['def']);
$out[] = "\t".''.$links.' '.$content.'';
} else {
$out[] = "\t".''.$links.' Undefined Note [#'.$info['seq'].'].';
}
}
}

if ('+' == $m['extras'] && !empty($this->unreferencedNotes)) {
foreach ($this->unreferencedNotes as $seq => $info) {
if (!empty($info['def'])) {
extract($info['def']);
$out[] = "\t".''.$content.'';
}
}
}

$this->notelist_cache[$index] = join("\n", $out);
}

if ($this->notelist_cache[$index]) {
$atts = $this->parseAttribs($m['atts']);
return "\n{$this->notelist_cache[$index]}\n";
}

return '';
}

/**
* Renders a note back reference link.
*
* This method renders an array of back reference
* links for notes.
*
* @param array $info Options
* @param string $g_links Reference type
* @param int $i Instance count
* @return string Processed input
*/

protected function makeBackrefLink(&$info, $g_links, $i)
{
$link = '';
$atts = '';
$content = '';
$id = '';

if (!empty($info['def'])) {
extract($info['def']);
}

$backlink_type = ($link) ? $link : $g_links;
$allow_inc = (false === strpos($this->syms, $i));

$i_ = str_replace(array('&', ';', '#'), '', $this->encodeHigh($i));
$decode = (strlen($i) !== strlen($i_));

if ($backlink_type === '!') {
return '';
} elseif ($backlink_type === '^') {
return '^'.$i.'';
} else {
$out = array();

foreach ($info['refids'] as $id) {
$out[] = '^{'. (($decode) ? $this->decodeHigh($i_) : $i_) .'}';
if ($allow_inc) {
$i_++;
}
}

return join(' ', $out);
}
}

/**
* Formats note definitions.
*
* This method formats notes and stores them in
* note cache for later use and to build reference
* links.
*
* @param array $m Options
* @return string Empty string
*/

protected function fParseNoteDefs($m)
{
list(, $label, $link, $att, $content) = $m;

// Assign an id if the note reference parse hasn't found the label yet.
if (empty($this->notes[$label]['id'])) {
$this->notes[$label]['id'] = $this->linkPrefix . ($this->linkIndex++);
}

// Ignores subsequent defs using the same label
if (empty($this->notes[$label]['def'])) {
$this->notes[$label]['def'] = array(
'atts' => $this->parseAttribs($att),
'content' => $this->graf($content),
'link' => $link,
);
}
return '';
}

/**
* Parses note references in the given input.
*
* This method replaces note reference tags with
* links.
*
* @param string $text Textile input
* @return string
*/

protected function noteRefs($text)
{
$text = preg_replace_callback(
"/\[(?P{$this->c})\#(?P[^\]!]+?)(?P[!]?)\]/Ux",
array(&$this, "fParseNoteRefs"),
$text
);
return $text;
}

/**
* Formats note reference links.
*
* By the time this function is called, all note lists will have been
* processed into the notes array, and we can resolve the link numbers in
* the order we process the references.
*
* @param array $m Options
* @return string Note reference
*/

protected function fParseNoteRefs($m)
{
$atts = $this->parseAttribs($m['atts']);
$nolink = ($m['nolink'] === '!');

// Assign a sequence number to this reference if there isn't one already.

if (empty($this->notes[$m['label']]['seq'])) {
$num = $this->notes[$m['label']]['seq'] = ($this->note_index++);
} else {
$num = $this->notes[$m['label']]['seq'];
}

// Make our anchor point & stash it for possible use in backlinks when the
// note list is generated later.
$refid = $this->linkPrefix . ($this->linkIndex++);
$this->notes[$m['label']]['refids'][] = $refid;

// If we are referencing a note that hasn't had the definition parsed yet, then assign it an ID.

if (empty($this->notes[$m['label']]['id'])) {
$id = $this->notes[$m['label']]['id'] = $this->linkPrefix . ($this->linkIndex++);
} else {
$id = $this->notes[$m['label']]['id'];
}

// Build the link (if any).
$out = ''.$num.'';

if (!$nolink) {
$out = ''.$out.'';
}

// Build the reference.
return $this->replaceMarkers($this->symbols['nl_ref_pattern'], array('atts' => $atts, 'marker' => $out));
}

/**
* Parses URI into component parts.
*
* This method splits a URI-like string apart into component parts, while
* also providing validation.
*
* @param string $uri The string to pick apart (if possible)
* @param array $m Reference to an array the URI component parts are assigned to
* @return bool TRUE if the string validates as a URI
* @link http://tools.ietf.org/html/rfc3986#appendix-B
*/

protected function parseURI($uri, &$m)
{
$r = "@^((?P[^:/?#]+):)?(//(?P[^/?#]*))?(?P[^?#]*)(\?(?P[^#]*))?(#(?P.*))?@";
// 12 3 4 5 6 7 8 9
//
// scheme = $2
// authority = $4
// path = $5
// query = $7
// fragment = $9

$ok = preg_match($r, $uri, $m);
return $ok;
}

/**
* Checks whether a component part can be added to a URI.
*
* @param array $mask An array of allowed component parts
* @param string $name The component to add
* @param array $parts An array of existing components to modify
* @return bool TRUE if the component can be added
*/

protected function addPart(&$mask, $name, &$parts)
{
return (in_array($name, $mask) && isset($parts[$name]) && '' !== $parts[$name]);
}

/**
* Rebuild a URI from parsed parts and a mask.
*
* @param array $parts Full array of URI parts
* @param string $mask Comma separated list of URI parts to include in the rebuilt URI
* @param bool $encode Flag to control encoding of the path part of the rebuilt URI
* @return string The rebuilt URI
* @link http://tools.ietf.org/html/rfc3986#section-5.3
*/

protected function rebuildURI($parts, $mask = 'scheme,authority,path,query,fragment', $encode = true)
{
$mask = explode(',', $mask);
$out = '';

if ($this->addPart($mask, 'scheme', $parts)) {
$out .= $parts['scheme'] . ':';
}

if ($this->addPart($mask, 'authority', $parts)) {
$out .= '//' . $parts['authority'];
}

if ($this->addPart($mask, 'path', $parts)) {
if (!$encode) {
$out .= $parts['path'];
} else {
$pp = explode('/', $parts['path']);
foreach ($pp as &$p) {
$p = str_replace(array('%25', '%40'), array('%', '@'), rawurlencode($p));
if (!in_array($parts['scheme'], array('tel','mailto'))) {
$p = str_replace('%2B', '+', $p);
}
}

$pp = implode('/', $pp);
$out .= $pp;
}
}

if ($this->addPart($mask, 'query', $parts)) {
$out .= '?' . $parts['query'];
}

if ($this->addPart($mask, 'fragment', $parts)) {
$out .= '#' . $parts['fragment'];
}

return $out;
}

/**
* Parses and shelves links in the given input.
*
* This method parses the input Textile document for links.
* Formats and encodes them, and stores the created link
* elements in cache.
*
* @param string $text Textile input
* @return string The input document with link pulled out and replaced with tokens
*/

protected function links($text)
{
$text = $this->markStartOfLinks($text);
return $this->replaceLinks($text);
}

/**
* Finds and marks the start of well formed links in the input text.
*
* @param string $text String to search for link starting positions.
* @return string Text with links marked.
* @see Textile::links()
*/

protected function markStartOfLinks($text)
{
// Slice text on '":' boundaries. These always occur in inline
// links between the link text and the url part and are much more
// infrequent than '"' characters so we have less possible links
// to process.
$slices = preg_split('/":/', $text);

try {
if (count($slices) > 1) {

// There are never any start of links in the last slice, so pop it
// off (we'll glue it back later).
$last_slice = array_pop($slices);

foreach ($slices as &$slice) {

// If there is no possible start quote then this slice is not a link
if (false === strpos($slice, '"')) {
continue;
}

// Cut this slice into possible starting points wherever we
// find a '"' character. Any of these parts could represent
// the start of the link text - we have to find which one.
$possible_start_quotes = explode('"', $slice);

// Start our search for the start of the link with the closest prior
// quote mark.
$possibility = rtrim(array_pop($possible_start_quotes));

// Init the balanced count. If this is still zero at the end
// of our do loop we'll mark the " that caused it to balance
// and move on to the next link.
$balanced = 0;
$linkparts = array();
$iter = 0;

while (1) {
// Starting at the end, pop off the previous part of the
// slice's fragments.

if (null === $possibility) {
throw new Exception("Malformed link found.");
}

// Add this part to those parts that make up the link text.
$linkparts[] = $possibility;
$len = strlen($possibility) > 0;

if ($len) {
// did this part inc or dec the balanced count?
if (preg_match('/^\S|=$/'.$this->regex_snippets['mod'], $possibility)) {
$balanced--;
}

if (preg_match('/\S$/'.$this->regex_snippets['mod'], $possibility)) {
$balanced++;
}
} else {
// If quotes occur next to each other, we get zero length strings.
// eg. ...""Open the door, HAL!"":url...
// In this case we count a zero length in the last position as a
// closing quote and others as opening quotes.
$balanced = (!$iter++) ? $balanced+1 : $balanced-1;
}

if ($balanced <= 0) {
break;
}

$possibility = array_pop($possible_start_quotes);
}

// Rebuild the link's text by reversing the parts and sticking them back
// together with quotes.
$link_start = implode('"', array_reverse($linkparts));

// Rebuild the remaining stuff that goes before the link but that's
// already in order.
$pre_link = implode('"', $possible_start_quotes);

// Re-assemble the link starts with a specific marker for the next regex.
$slice = $pre_link . $this->uid.'linkStartMarker:"' . $link_start;
}

// Add the last part back
$slices[] = $last_slice;
}

// Re-assemble the full text with the start and end markers
$text = implode('":', $slices);

} catch (Exception $e) {
// If we got an exception marking the links then let the replace regex try sorting it out...
}

return $text;
}

/**
* Replaces links with a token and stores it on the shelf.
*
* @param array $m options
* @return string reference token for the shelved content
* @see Textile::links()
*/

protected function replaceLinks($text)
{
$stopchars = "\s|^'\"*";

return preg_replace_callback(
'/
(?P\[)? # Optionally open with a square bracket eg. Look ["here":url]
'.$this->uid.'linkStartMarker:" # marks start of the link
(?P.+?) # capture the content of the inner "..." part of the link, can be anything but
# do not worry about matching class, id, lang or title yet
": # literal ": marks end of atts + text + title block
(?P[^'.$stopchars.']*) # url upto a stopchar
/x'.$this->regex_snippets['mod'],
array(&$this, "fLink"),
$text
);
}

/**
* Formats a link and stores it on the shelf.
*
* @param array $m options
* @return string reference token for the shelved content
* @see Textile::replaceLinks()
*/

protected function fLink($m)
{
$in = $m[0];
$pre = $m['pre'];
$inner = $m['inner'];
$url = $m['urlx'];
$m = array();

// Reject invalid urls such as "linktext": which has no url part.
if ('' === $url) {
return str_replace($this->uid.'linkStartMarker:', '', $in);
}

// Split inner into $atts, $text and $title..
preg_match(
'/
^
(?P' . $this->c . ') # $atts (if any)
(?P # $text is...
(!.+!) # an image
| # else...
$?[^(]+? # link text
) # end of $text
(?:\((?P[^)]+?)$)? # $title (if any)
$
/x'.$this->regex_snippets['mod'],
$inner,
$m
);
$atts = isset($m['atts']) ? $m['atts'] : '';
$text = isset($m['text']) ? trim($m['text']) : $inner;
$title = isset($m['title']) ? $m['title'] : '';
$m = array();

// In cases like; "(myclass) (just in case you were wondering)":http://slashdot.org/
// Where the middle text field is empty but there is a valid title field, we use that for the text.
if (!$text && $title) {
$text = "($title)";
$title = '';
}

$pop = $tight = '';
$url_chars = array();
$counts = array(
'[' => null,
']' => substr_count($url, ']'), # We need to know how many closing square brackets we have
'(' => null,
')' => null,
);

// Look for footnotes or other square-bracket delimieted stuff at the end of the url...
// eg. "text":url][otherstuff... will have "[otherstuff" popped back out.
// "text":url?q[]=x][123] will have "[123]" popped off the back, the remaining closing square brackets
// will later be tested for balance
if ($counts[']']) {
if (1 === preg_match('@(?P<url>^.*\])(?P<tight>\[.*?)$@' . $this->regex_snippets['mod'], $url, $m)) {
$url = $m['url'];
$tight = $m['tight'];
$m = array();
}
}

// Split off any trailing text that isn't part of an array assignment.
// eg. "text":...?q[]=value1&q[]=value2 ... is ok
// "text":...?q[]=value1]following ... would have "following" popped back out and the remaining square bracket
// will later be tested for balance
if ($counts[']']) {
if (1 === preg_match('@(?P<url>^.*\])(?!=)(?P<end>.*?)$@' . $this->regex_snippets['mod'], $url, $m)) {
$url = $m['url'];
$tight = $m['end'] . $tight;
$m = array();
}
}

// Does this need to be mb_ enabled? We are only searching for text in the ASCII charset anyway
// Create an array of (possibly) multi-byte characters.
// This is going to allow us to pop off any non-matched or nonsense chars from the url
$len = strlen($url);
$url_chars = str_split($url);

// Now we have the array of all the multi-byte chars in the url we will parse the uri backwards and pop off
// any chars that don't belong there (like . or , or unmatched brackets of various kinds)...
$first = true;
do {
$c = array_pop($url_chars);
$popped = false;
switch ($c) {

// Textile URL shouldn't end in these characters, we pop them off the end and push them out the back of the url again.
case '!':
case '?':
case ':':
case ';':
case '.':
case ',':
$pop = $c . $pop;
$popped = true;
break;

case '>':
$urlLeft = implode('', $url_chars);

if (preg_match('@(?P<tag><\/[a-z]+)$@', $urlLeft, $m)) {
$url_chars = str_split(substr($urlLeft, 0, strlen($m['tag']) * -1));
$pop = $m['tag'] . $c . $pop;
$popped = true;
}

break;

case ']':
// If we find a closing square bracket we are going to see if it is balanced.
// If it is balanced with matching opening bracket then it is part of the URL else we spit it back
// out of the URL.
if (null === $counts['[']) {
$counts['['] = substr_count($url, '[');
}

if ($counts['['] === $counts[']']) {
// It is balanced, so keep it
$url_chars[] = $c;
} else {
// In the case of un-matched closing square brackets we just eat it
$popped = true;
$counts[']'] -= 1;
if ($first) {
$pre = '';
}
}
break;

case ')':
if (null === $counts[')']) {
$counts['('] = substr_count($url, '(');
$counts[')'] = substr_count($url, ')');
}

if ($counts['('] === $counts[')']) {
// It is balanced, so keep it
$url_chars[] = $c;
} else {
// Unbalanced so spit it out the back end
$pop = $c . $pop;
$counts[')'] -= 1;
$popped = true;
}
break;

default:
// We have an acceptable character for the end of the url so put it back and exit the character popping loop
$url_chars[] = $c;
break;
}
$first = false;
} while ($popped);

$url = implode('', $url_chars);
$uri_parts = array();
$this->parseURI($url, $uri_parts);

$scheme = $uri_parts['scheme'];
$scheme_in_list = in_array($scheme, $this->url_schemes);
$scheme_ok = ('' === $scheme) || $scheme_in_list;

if (!$scheme_ok) {
return str_replace($this->uid.'linkStartMarker:', '', $in);
}

if ('$' === $text) {
if ($scheme_in_list) {
$text = ltrim($this->rebuildURI($uri_parts, 'authority,path,query,fragment', false), '/');
} else {
if (isset($this->urlrefs[$url])) {
$url = urldecode($this->urlrefs[$url]);
}

$text = $url;
}
}

$text = trim($text);
$title = $this->encodeHTML($title);

// If the text was in parenthesis and there was no title, then the regex
// will have an empty $text and a non-empty $title.
if (empty($text) && !empty($title)) {
$text = "($title)";
$title = '';
}

if (!$this->noimage) {
$text = $this->images($text);
}

$text = $this->spans($text);
$text = $this->glyphs($text);
$url = $this->shelveURL($this->rebuildURI($uri_parts));
$a = $this->newTag('a', $this->parseAttribsToArray($atts), false)->title($title)->href($url, true)->rel($this->rel);
$tags = $this->storeTags((string) $a, '</a>');
$out = $this->shelve($tags['open'].trim($text).$tags['close']);

return $pre . $out . $pop . $tight;
}

/**
* Finds URI aliases within the given input.
*
* This method finds URI aliases in the Textile input. Links are stored
* in an internal cache, so that they can be referenced from any link
* in the document.
*
* This operation happens before the actual link parsing takes place.
*
* @param string $text Textile input
* @return string The Textile document with any URI aliases removed
*/

protected function getRefs($text)
{
$pattern = array();

foreach ($this->url_schemes as $scheme) {
$pattern[] = preg_quote($scheme.':', '/');
}

$pattern = '/^\[(?P<alias>.+)\](?P<url>(?:'.join('|', $pattern).'|\/)\S+)(?=\s|$)/Um';
return preg_replace_callback($pattern.$this->regex_snippets['mod'], array(&$this, "refs"), $text);
}

/**
* Parses, encodes and shelves the current URI alias.
*
* @param array $m Options
* @return string Empty string
* @see Textile::getRefs()
*/

protected function refs($m)
{
$uri_parts = array();
$this->parseURI($m['url'], $uri_parts);
// Encodes URL if needed.
$this->urlrefs[$m['alias']] = ltrim($this->rebuildURI($uri_parts));
return '';
}

/**
* Shelves parsed URLs.
*
* Stores away a URL fragments that have been parsed
* and requires no more processing.
*
* @param string $text The URL
* @return string The fragment's unique reference ID
* @see Textile::retrieveURLs()
*/

protected function shelveURL($text)
{
if ('' === $text) {
return '';
}

$this->refCache[$this->refIndex] = $text;
return $this->uid.($this->refIndex++).':url';
}

/**
* Replaces reference tokens with corresponding shelved URL.
*
* This method puts all shelved URLs back to the final,
* parsed input.
*
* @param string $text The input
* @return string Processed text
* @see Textile::shelveURL()
*/

protected function retrieveURLs($text)
{
return preg_replace_callback('/'.$this->uid.'(?P<token>\d+):url/', array(&$this, 'retrieveURL'), $text);
}

/**
* Retrieves an URL from the shelve.
*
* @param array $m Options
* @return string The URL
*/

protected function retrieveURL($m)
{
if (!isset($this->refCache[$m['token']])) {
return $m['token'];
}

$url = $this->refCache[$m['token']];
if (isset($this->urlrefs[$url])) {
$url = $this->urlrefs[$url];
}

return $this->rEncodeHTML($this->relURL($url));
}

/**
* Completes and formats a URL.
*
* @param string $url The URL
* @return string
*/

protected function relURL($url)
{
$parts = @parse_url(urldecode($url));

if ((empty($parts['scheme']) || $parts['scheme'] == 'http') && empty($parts['host']) && (isset($parts['path']) && preg_match('/^\w/', $parts['path']))) {
$url = $this->relativeImagePrefix.$url;
}

if ($this->restricted && !empty($parts['scheme']) && !in_array($parts['scheme'], $this->url_schemes)) {
return '#';
}

return $url;
}

/**
* Checks if an URL is relative.
*
* The given URL is considered relative if it doesn't
* contain scheme and hostname.
*
* @param string $url The URL
* @return bool TRUE if relative, FALSE otherwise
*/

protected function isRelURL($url)
{
$parts = @parse_url($url);
return (empty($parts['scheme']) && empty($parts['host']));
}

/**
* Parses and shelves images in the given input.
*
* This method parses the input Textile document for images and
* generates img HTML tags for each one found, caching the
* generated img tag internally and replacing the Textile image with a
* token to the cached tag.
*
* @param string $text Textile input
* @return string The input document with images pulled out and replaced with tokens
*/

protected function images($text)
{
return preg_replace_callback(
'/
(?:[[{])? # pre
\! # opening !
(\<|\=|\>|<|>)? # optional alignment $algn
('.$this->lc.') # optional style,class atts $atts
(?:\.\s)? # optional dot-space
([^\s(!]+) # presume this is the src $url
\s? # optional space
(?:$([^$]+)\))? # optional title $title
\! # closing
(?::(\S+)(?<![\]).,]))? # optional href sans final punct. $href
(?:[\]}]|(?=[.,\s)|]|$)) # lookahead: space , . ) | or end of string ... "|" needed if image in table cell
/x'.$this->regex_snippets['mod'],
array(&$this, "fImage"),
$text
);
}

/**
* Formats an image and stores it on the shelf.
*
* @param array $m Options
* @return string Reference token for the shelved content
* @see Textile::images()
*/

protected function fImage($m)
{
$extras = '';

list(, $align, $atts, $url, $title, $href) = array_pad($m, 6, null);

$alignments = array(
'<' => 'left',
'=' => 'center',
'>' => 'right',
);

if (isset($alignments[$align])) {
if ('html5' === $this->doctype) {
$extras = 'align-'.$alignments[$align];
$align = '';
} else {
$align = $alignments[$align];
}
} else {
$align = '';
}

if ($title) {
$title = $this->encodeHTML($title);
}

$img = $this->newTag('img', $this->parseAttribsToArray($atts, '', 1, $extras))
->align($align)
->alt($title, true)
->src($this->shelveURL($url), true)
->title($title);

if (!$this->dimensionless_images && $this->isRelUrl($url)) {
$real_location = realpath($this->doc_root.ltrim($url, $this->ds));

if ($real_location) {
if ($size = getimagesize($real_location)) {
$img->height($size[1])->width($size[0]);
}
}
}

$out = (string) $img;

if ($href) {
$href = $this->shelveURL($href);
$link = $this->newTag('a', array(), false)->href($href)->rel($this->rel);
$out = (string) $link . "$img</a>";
}

return $this->shelve($out);
}

/**
* Parses code blocks in the given input.
*
* @param string $text The input
* @return string Processed text
*/

protected function code($text)
{
$text = $this->doSpecial($text, '<code>', '</code>', 'fCode');
$text = $this->doSpecial($text, '@', '@', 'fCode');
$text = $this->doSpecial($text, '<pre>', '</pre>', 'fPre');
return $text;
}

/**
* Formats inline code tags.
*
* @param array $m
* @return string
*/

protected function fCode($m)
{
return $m['before'].$this->shelve('<code>'.$this->rEncodeHTML($m['content']).'</code>');
}

/**
* Formats pre tags.
*
* @param array $m Options
* @return string
*/

protected function fPre($m)
{
return $m['before'].'<pre>'.$this->shelve($this->rEncodeHTML($m['content'])).'</pre>';
}

/**
* Shelves parsed content.
*
* Stores away a fragment of the source text that have been parsed
* and requires no more processing.
*
* @param string $val The content
* @return string The fragment's unique reference ID
* @see Textile::retrieve()
*/

protected function shelve($val)
{
$i = $this->uid.($this->refIndex++).':shelve';
$this->shelf[$i] = $val;
return $i;
}

/**
* Replaces reference tokens with corresponding shelved content.
*
* This method puts all shelved content back to the final,
* parsed input.
*
* @param string $text The input
* @return string Processed text
* @see Textile::shelve()
*/

protected function retrieve($text)
{
if ($this->shelf) {
do {
$old = $text;
$text = str_replace(array_keys($this->shelf), $this->shelf, $text);
} while ($text != $old);
}

return $text;
}

/**
* Removes BOM and unifies line ending in the given input.
*
* @param string $text Input Textile
* @return string Cleaned version of the input
*/

protected function cleanWhiteSpace($text)
{
// Removes byte order mark.
$out = preg_replace("/^\xEF\xBB\xBF|\x1A/", '', $text);
// Replaces CRLF and CR with single LF.
$out = preg_replace("/\r\n?/", "\n", $out);
// Removes leading tabs and spaces, if the line is otherwise empty.
$out = preg_replace("/^[ \t]*\n/m", "\n", $out);
// Removes leading and ending blank lines.
$out = trim($out, "\n");
return $out;
}

/**
* Uses the specified callback method to format the content between end and start nodes.
*
* @param string $text The input to format
* @param string $start The start node to look for
* @param string $end The end node to look for
* @param string $method The callback method
* @return string Processed input
*/

protected function doSpecial($text, $start, $end, $method = 'fSpecial')
{
return preg_replace_callback('/(?P<before>^|\s|[|[({>])'.preg_quote($start, '/').'(?P<content>.*?)'.preg_quote($end, '/').'/ms', array(&$this, $method), $text);
}

/**
* Formats blocks that should display HTML as text.
*
* Convert special characters to HTML entities. This
* is the default formatted used by doSpecial method.
*
* @param array $m Options
* @return string Formatted input
* @see Parser::doSpecial()
*/

protected function fSpecial($m)
{
return $m['before'].$this->shelve($this->encodeHTML($m['content']));
}

/**
* Parses notextile tags in the given input.
*
* @param string $text The input
* @return string Processed input
*/

protected function noTextile($text)
{
$text = $this->doSpecial($text, '<notextile>', '</notextile>', 'fTextile');
return $this->doSpecial($text, '==', '==', 'fTextile');
}

/**
* Format notextile blocks.
*
* @param array $m Options
* @return string
*/

protected function fTextile($m)
{
return $m['before'].$this->shelve($m['content']);
}

/**
* Parses footnote reference links in the given input.
*
* This method replaces [n] instances with links.
*
* @param string $text The input
* @return string $text Processed input
* @see Textile::footnoteID()
*/

protected function footnoteRefs($text)
{
return preg_replace_callback('/(?<=\S)\[(?P<id>\d+)(?P<nolink>!?)\]\s?/U'.$this->regex_snippets['mod'], array(&$this, 'footnoteID'), $text);
}

/**
* Renders a footnote reference link or ID.
*
* @param array $m Options
* @return string Footnote link, or ID
*/

protected function footnoteID($m)
{
$backref = ' class="footnote"';

if (empty($this->fn[$m['id']])) {
$this->fn[$m['id']] = $id = $this->linkPrefix . ($this->linkIndex++);
$backref .= " id=\"fnrev$id\"";
}

$fnid = $this->fn[$m['id']];
$footref = ('!' == $m['nolink']) ? $m['id'] : '<a href="#fn'.$fnid.'">'.$m['id'].'</a>';
$footref = $this->formatFootnote($footref, $backref, false);

return $footref;
}

/**
* Parses and shelves quoted quotes in the given input.
*
* @param string $text The text to search for quoted quotes
* @return string
*/

protected function glyphQuotedQuote($text)
{
return preg_replace_callback('/ (?P<pre>'.$this->quote_starts.')"(?P<post>.) /'.$this->regex_snippets['mod'], array(&$this, "fGlyphQuotedQuote"), $text);
}

/**
* Formats quoted quotes and stores it on the shelf.
*
* @param array $m Named regular expression parts
* @return string Input with quoted quotes removed and replaced with tokens
* @see Textile::glyphQuotedQuote()
*/

protected function fGlyphQuotedQuote($m)
{
// Check the correct closing character was found.
if (!isset($this->quotes[$m['pre']]) || $m['post'] !== $this->quotes[$m['pre']]) {
return $m[0];
}

$glyph = ' ' . strtr($m['pre'], array( '"'=>'“', "'"=>'‘', ' '=>' ' )) . '"' . strtr($m['post'], array( '"'=> '”', "'"=>'’', ' '=>' ' )) . ' ';
return $this->shelve($glyph);
}

/**
* Replaces glyphs in the given input.
*
* This method performs typographical glyph replacements. The input is split
* across HTML-like tags in order to avoid attempting glyph
* replacements within tags.
*
* @param string $text Input Textile
* @return string
*/

protected function glyphs($text)
{
// Fix: hackish -- adds a space if final char of text is a double quote.
$text = preg_replace('/"\z/', "\" ", $text);

$text = preg_split("@(<[\w/!?].*>)@Us".$this->regex_snippets['mod'], $text, -1, PREG_SPLIT_DELIM_CAPTURE);
$i = 0;
foreach ($text as $line) {
// Text tag text tag text ...
if (++$i % 2) {
// Raw < > & chars are already entity encoded in restricted mode
if (!$this->restricted) {
$line = preg_replace('/&(?!#?[a-z0-9]+;)/i', '&', $line);
$line = str_replace(array('<', '>'), array('<', '>'), $line);
}
$line = preg_replace($this->glyph_search, $this->glyph_replace, $line);
}
$glyph_out[] = $line;
}
return join('', $glyph_out);
}

/**
* Replaces glyph references in the given input.
*
* This method removes temporary glyph: instances
* from the input.
*
* @param string $text The input
* @return string Processed input
*/

protected function replaceGlyphs($text)
{
return str_replace($this->uid.':glyph:', '', $text);
}

/**
* Translates alignment tag into corresponding CSS text-align property value.
*
* @param string $in The Textile alignment tag
* @return string CSS text-align value
*/

protected function hAlign($in)
{
$vals = array(
'<' => 'left',
'>' => 'right',
'<>' => 'justify',
'<' => 'left',
'=' => 'center',
'>' => 'right',
'<>' => 'justify',
);

return (isset($vals[$in])) ? $vals[$in] : '';
}

/**
* Translates vertical alignment tag into corresponding CSS vertical-align property value.
*
* @param string $in The Textile alignment tag
* @return string CSS vertical-align value
*/

protected function vAlign($in)
{
$vals = array(
'^' => 'top',
'-' => 'middle',
'~' => 'bottom',
);

return (isset($vals[$in])) ? $vals[$in] : '';
}

/**
* Converts character codes in the given input from HTML numeric character reference to character code.
*
* Conversion is done according to Textile's multi-byte conversion map.
*
* @param string $text The input
* @param string $charset The character set
* @return string Processed input
*/

protected function encodeHigh($text, $charset = 'UTF-8')
{
return ($this->mb) ? mb_encode_numericentity($text, $this->cmap, $charset) : htmlentities($text, ENT_NOQUOTES, $charset);
}

/**
* Converts numeric HTML character references to character code.
*
* @param string $text The input
* @param string $charset The character set
* @return string Processed input
*/

protected function decodeHigh($text, $charset = 'UTF-8')
{
$text = (ctype_digit($text)) ? "&#$text;" : "&$text;";
return ($this->mb) ? mb_decode_numericentity($text, $this->cmap, $charset) : html_entity_decode($text, ENT_NOQUOTES, $charset);
}

/**
* Convert special characters to HTML entities.
*
* This method's functionality is identical to PHP's own
* htmlspecialchars(). In Textile this is used for sanitising
* the input.
*
* @param string $str The string to encode
* @param bool $quotes Encode quotes
* @return string Encoded string
* @see htmlspecialchars()
*/

protected function encodeHTML($str, $quotes = true)
{
$a = array(
'&' => '&',
'<' => '<',
'>' => '>',
);

if ($quotes) {
$a = $a + array(
"'" => ''', // Numeric, as in htmlspecialchars
'"' => '"',
);
}

return str_replace(array_keys($a), $a, $str);
}

/**
* Convert special characters to HTML entities.
*
* This is identical to encodeHTML(), but takes restricted
* mode into account. When in restricted mode, only escapes
* quotes.
*
* @param string $str The string to encode
* @param bool $quotes Encode quotes
* @return string Encoded string
* @see Textile::encodeHTML()
*/

protected function rEncodeHTML($str, $quotes = true)
{
// In restricted mode, all input but quotes has already been escaped
if ($this->restricted) {
return str_replace('"', '"', $str);
}

return $this->encodeHTML($str, $quotes);
}
}}