+++ /dev/null
-// Released under MIT license
-// Copyright (c) 2009-2010 Dominic Baggott
-// Copyright (c) 2009-2010 Ash Berlin
-
-(function( expose ) {
-
-/**
- * class Markdown
- *
- * Markdown processing in Javascript done right. We have very particular views
- * on what constitutes 'right' which include:
- *
- * - produces well-formed HTML (this means that em and strong nesting is
- * important)
- *
- * - has an intermediate representation to allow processing of parsed data (We
- * in fact have two, both as [JsonML]: a markdown tree and an HTML tree).
- *
- * - is easily extensible to add new dialects without having to rewrite the
- * entire parsing mechanics
- *
- * - has a good test suite
- *
- * This implementation fulfills all of these (except that the test suite could
- * do with expanding to automatically run all the fixtures from other Markdown
- * implementations.)
- *
- * ##### Intermediate Representation
- *
- * *TODO* Talk about this :) Its JsonML, but document the node names we use.
- *
- * [JsonML]: http://jsonml.org/ "JSON Markup Language"
- **/
-var Markdown = expose.Markdown = function Markdown(dialect) {
- switch (typeof dialect) {
- case "undefined":
- this.dialect = Markdown.dialects.Gruber;
- break;
- case "object":
- this.dialect = dialect;
- break;
- default:
- if (dialect in Markdown.dialects) {
- this.dialect = Markdown.dialects[dialect];
- }
- else {
- throw new Error("Unknown Markdown dialect '" + String(dialect) + "'");
- }
- break;
- }
- this.em_state = [];
- this.strong_state = [];
- this.debug_indent = "";
-}
-
-/**
- * parse( markdown, [dialect] ) -> JsonML
- * - markdown (String): markdown string to parse
- * - dialect (String | Dialect): the dialect to use, defaults to gruber
- *
- * Parse `markdown` and return a markdown document as a Markdown.JsonML tree.
- **/
-expose.parse = function( source, dialect ) {
- // dialect will default if undefined
- var md = new Markdown( dialect );
- return md.toTree( source );
-}
-
-/**
- * toHTML( markdown ) -> String
- * toHTML( md_tree ) -> String
- * - markdown (String): markdown string to parse
- * - md_tree (Markdown.JsonML): parsed markdown tree
- *
- * Take markdown (either as a string or as a JsonML tree) and run it through
- * [[toHTMLTree]] then turn it into a well-formated HTML fragment.
- **/
-expose.toHTML = function toHTML( source ) {
- var input = expose.toHTMLTree( source );
-
- return expose.renderJsonML( input );
-}
-
-/**
- * toHTMLTree( markdown, [dialect] ) -> JsonML
- * toHTMLTree( md_tree ) -> JsonML
- * - markdown (String): markdown string to parse
- * - dialect (String | Dialect): the dialect to use, defaults to gruber
- * - md_tree (Markdown.JsonML): parsed markdown tree
- *
- * Turn markdown into HTML, represented as a JsonML tree. If a string is given
- * to this function, it is first parsed into a markdown tree by calling
- * [[parse]].
- **/
-expose.toHTMLTree = function toHTMLTree( input, dialect ) {
- // convert string input to an MD tree
- if ( typeof input ==="string" ) input = this.parse( input, dialect );
-
- // Now convert the MD tree to an HTML tree
-
- // remove references from the tree
- var attrs = extract_attr( input ),
- refs = {};
-
- if ( attrs && attrs.references ) {
- refs = attrs.references;
- }
-
- var html = convert_tree_to_html( input, refs );
- merge_text_nodes( html );
- return html;
-}
-
-var mk_block = Markdown.mk_block = function(block, trail, line) {
- // Be helpful for default case in tests.
- if ( arguments.length == 1 ) trail = "\n\n";
-
- var s = new String(block);
- s.trailing = trail;
- // To make it clear its not just a string
- s.toSource = function() {
- return "Markdown.mk_block( " +
- uneval(block) +
- ", " +
- uneval(trail) +
- ", " +
- uneval(line) +
- " )"
- }
-
- if (line != undefined)
- s.lineNumber = line;
-
- return s;
-}
-
-function count_lines( str ) {
- var n = 0, i = -1;;
- while ( ( i = str.indexOf('\n', i+1) ) != -1) n++;
- return n;
-}
-
-// Internal - split source into rough blocks
-Markdown.prototype.split_blocks = function splitBlocks( input, startLine ) {
- // [\s\S] matches _anything_ (newline or space)
- var re = /([\s\S]+?)($|\n(?:\s*\n|$)+)/g,
- blocks = [],
- m;
-
- var line_no = 1;
-
- if ( ( m = /^(\s*\n)/.exec(input) ) != null ) {
- // skip (but count) leading blank lines
- line_no += count_lines( m[0] );
- re.lastIndex = m[0].length;
- }
-
- while ( ( m = re.exec(input) ) != null ) {
- blocks.push( mk_block( m[1], m[2], line_no ) );
- line_no += count_lines( m[0] );
- }
-
- return blocks;
-}
-
-/**
- * Markdown#processBlock( block, next ) -> undefined | [ JsonML, ... ]
- * - block (String): the block to process
- * - next (Array): the following blocks
- *
- * Process `block` and return an array of JsonML nodes representing `block`.
- *
- * It does this by asking each block level function in the dialect to process
- * the block until one can. Succesful handling is indicated by returning an
- * array (with zero or more JsonML nodes), failure by a false value.
- *
- * Blocks handlers are responsible for calling [[Markdown#processInline]]
- * themselves as appropriate.
- *
- * If the blocks were split incorrectly or adjacent blocks need collapsing you
- * can adjust `next` in place using shift/splice etc.
- *
- * If any of this default behaviour is not right for the dialect, you can
- * define a `__call__` method on the dialect that will get invoked to handle
- * the block processing.
- */
-Markdown.prototype.processBlock = function processBlock( block, next ) {
- var cbs = this.dialect.block,
- ord = cbs.__order__;
-
- if ( "__call__" in cbs ) {
- return cvs.__call__.call(this, block, next);
- }
-
- for ( var i = 0; i < ord.length; i++ ) {
- //D:this.debug( "Testing", ord[i] );
- var res = cbs[ ord[i] ].call( this, block, next );
- if ( res ) {
- //D:this.debug(" matched");
- if ( !res instanceof Array || ( res.length > 0 && !( res[0] instanceof Array ) ) )
- this.debug(ord[i], "didn't return a proper array");
- //D:this.debug( "" );
- return res;
- }
- }
-
- // Uhoh! no match! Should we throw an error?
- return [];
-}
-
-Markdown.prototype.processInline = function processInline( block ) {
- return this.dialect.inline.__call__.call( this, String( block ) );
-}
-
-/**
- * Markdown#toTree( source ) -> JsonML
- * - source (String): markdown source to parse
- *
- * Parse `source` into a JsonML tree representing the markdown document.
- **/
-// custom_tree means set this.tree to `custom_tree` and restore old value on return
-Markdown.prototype.toTree = function toTree( source, custom_root ) {
- var blocks = source instanceof Array
- ? source
- : this.split_blocks( source );
-
- // Make tree a member variable so its easier to mess with in extensions
- var old_tree = this.tree;
- try {
- this.tree = custom_root || this.tree || [ "markdown" ];
-
- blocks:
- while ( blocks.length ) {
- var b = this.processBlock( blocks.shift(), blocks );
-
- // Reference blocks and the like won't return any content
- if ( !b.length ) continue blocks;
-
- this.tree.push.apply( this.tree, b );
- }
- return this.tree;
- }
- finally {
- if ( custom_root )
- this.tree = old_tree;
- }
-
-}
-
-// Noop by default
-Markdown.prototype.debug = function () {
- var args = Array.prototype.slice.call( arguments);
- args.unshift(this.debug_indent);
- print.apply( print, args );
-}
-
-Markdown.prototype.loop_re_over_block = function( re, block, cb ) {
- // Dont use /g regexps with this
- var m,
- b = block.valueOf();
-
- while ( b.length && (m = re.exec(b) ) != null) {
- b = b.substr( m[0].length );
- cb.call(this, m);
- }
- return b;
-}
-
-/**
- * Markdown.dialects
- *
- * Namespace of built-in dialects.
- **/
-Markdown.dialects = {};
-
-/**
- * Markdown.dialects.Gruber
- *
- * The default dialect that follows the rules set out by John Gruber's
- * markdown.pl as closely as possible. Well actually we follow the behaviour of
- * that script which in some places is not exactly what the syntax web page
- * says.
- **/
-Markdown.dialects.Gruber = {
- block: {
- atxHeader: function atxHeader( block, next ) {
- var m = block.match( /^(#{1,6})\s*(.*?)\s*#*\s*(?:\n|$)/ );
-
- if ( !m ) return undefined;
-
- var header = [ "header", { level: m[ 1 ].length }, m[ 2 ] ];
-
- if ( m[0].length < block.length )
- next.unshift( mk_block( block.substr( m[0].length ), block.trailing, block.lineNumber + 2 ) );
-
- return [ header ];
- },
-
- setextHeader: function setextHeader( block, next ) {
- var m = block.match( /^(.*)\n([-=])\2\2+(?:\n|$)/ );
-
- if ( !m ) return undefined;
-
- var level = ( m[ 2 ] === "=" ) ? 1 : 2;
- var header = [ "header", { level : level }, m[ 1 ] ];
-
- if ( m[0].length < block.length )
- next.unshift( mk_block( block.substr( m[0].length ), block.trailing, block.lineNumber + 2 ) );
-
- return [ header ];
- },
-
- code: function code( block, next ) {
- // | Foo
- // |bar
- // should be a code block followed by a paragraph. Fun
- //
- // There might also be adjacent code block to merge.
-
- var ret = [],
- re = /^(?: {0,3}\t| {4})(.*)\n?/,
- lines;
-
- // 4 spaces + content
- var m = block.match( re );
-
- if ( !m ) return undefined;
-
- block_search:
- do {
- // Now pull out the rest of the lines
- var b = this.loop_re_over_block(
- re, block.valueOf(), function( m ) { ret.push( m[1] ) } );
-
- if (b.length) {
- // Case alluded to in first comment. push it back on as a new block
- next.unshift( mk_block(b, block.trailing) );
- break block_search;
- }
- else if (next.length) {
- // Check the next block - it might be code too
- var m = next[0].match( re );
-
- if ( !m ) break block_search;
-
- // Pull how how many blanks lines follow - minus two to account for .join
- ret.push ( block.trailing.replace(/[^\n]/g, '').substring(2) );
-
- block = next.shift();
- }
- else
- break block_search;
- } while (true);
-
- return [ [ "code_block", ret.join("\n") ] ];
- },
-
- horizRule: function horizRule( block, next ) {
- // this needs to find any hr in the block to handle abutting blocks
- var m = block.match( /^(?:([\s\S]*?)\n)?[ \t]*([-_*])(?:[ \t]*\2){2,}[ \t]*(?:\n([\s\S]*))?$/ );
-
- if ( !m ) {
- return undefined;
- }
-
- var jsonml = [ [ "hr" ] ];
-
- // if there's a leading abutting block, process it
- if ( m[ 1 ] ) {
- jsonml.unshift.apply( jsonml, this.processBlock( m[ 1 ], [] ) );
- }
-
- // if there's a trailing abutting block, stick it into next
- if ( m[ 3 ] ) {
- next.unshift( mk_block( m[ 3 ] ) );
- }
-
- return jsonml;
- },
-
- // There are two types of lists. Tight and loose. Tight lists have no whitespace
- // between the items (and result in text just in the <li>) and loose lists,
- // which have an empty line between list items, resulting in (one or more)
- // paragraphs inside the <li>.
- //
- // There are all sorts weird edge cases about the original markdown.pl's
- // handling of lists:
- //
- // * Nested lists are supposed to be indented by four chars per level. But
- // if they aren't, you can get a nested list by indenting by less than
- // four so long as the indent doesn't match an indent of an existing list
- // item in the 'nest stack'.
- //
- // * The type of the list (bullet or number) is controlled just by the
- // first item at the indent. Subsequent changes are ignored unless they
- // are for nested lists
- //
- lists: (function( ) {
- // Use a closure to hide a few variables.
- var any_list = "[*+-]|\\d\\.",
- bullet_list = /[*+-]/,
- number_list = /\d+\./,
- // Capture leading indent as it matters for determining nested lists.
- is_list_re = new RegExp( "^( {0,3})(" + any_list + ")[ \t]+" ),
- indent_re = "(?: {0,3}\\t| {4})";
-
- // TODO: Cache this regexp for certain depths.
- // Create a regexp suitable for matching an li for a given stack depth
- function regex_for_depth( depth ) {
-
- return new RegExp(
- // m[1] = indent, m[2] = list_type
- "(?:^(" + indent_re + "{0," + depth + "} {0,3})(" + any_list + ")\\s+)|" +
- // m[3] = cont
- "(^" + indent_re + "{0," + (depth-1) + "}[ ]{0,4})"
- );
- }
- function expand_tab( input ) {
- return input.replace( / {0,3}\t/g, " " );
- }
-
- // Add inline content `inline` to `li`. inline comes from processInline
- // so is an array of content
- function add(li, loose, inline, nl) {
- if (loose) {
- li.push( [ "para" ].concat(inline) );
- return;
- }
- // Hmmm, should this be any block level element or just paras?
- var add_to = li[li.length -1] instanceof Array && li[li.length - 1][0] == "para"
- ? li[li.length -1]
- : li;
-
- // If there is already some content in this list, add the new line in
- if (nl && li.length > 1) inline.unshift(nl);
-
- for (var i=0; i < inline.length; i++) {
- var what = inline[i],
- is_str = typeof what == "string";
- if (is_str && add_to.length > 1 && typeof add_to[add_to.length-1] == "string" )
- {
- add_to[ add_to.length-1 ] += what;
- }
- else {
- add_to.push( what );
- }
- }
- }
-
- // contained means have an indent greater than the current one. On
- // *every* line in the block
- function get_contained_blocks( depth, blocks ) {
-
- var re = new RegExp( "^(" + indent_re + "{" + depth + "}.*?\\n?)*$" ),
- replace = new RegExp("^" + indent_re + "{" + depth + "}", "gm"),
- ret = [];
-
- while ( blocks.length > 0 ) {
- if ( re.exec( blocks[0] ) ) {
- var b = blocks.shift(),
- // Now remove that indent
- x = b.replace( replace, "");
-
- ret.push( mk_block( x, b.trailing, b.lineNumber ) );
- }
- break;
- }
- return ret;
- }
-
- // passed to stack.forEach to turn list items up the stack into paras
- function paragraphify(s, i, stack) {
- var list = s.list;
- var last_li = list[list.length-1];
-
- if (last_li[1] instanceof Array && last_li[1][0] == "para") {
- return;
- }
- if (i+1 == stack.length) {
- // Last stack frame
- // Keep the same array, but replace the contents
- last_li.push( ["para"].concat( last_li.splice(1) ) );
- }
- else {
- var sublist = last_li.pop();
- last_li.push( ["para"].concat( last_li.splice(1) ), sublist );
- }
- }
-
- // The matcher function
- return function( block, next ) {
- var m = block.match( is_list_re );
- if ( !m ) return undefined;
-
- function make_list( m ) {
- var list = bullet_list.exec( m[2] )
- ? ["bulletlist"]
- : ["numberlist"];
-
- stack.push( { list: list, indent: m[1] } );
- return list;
- }
-
-
- var stack = [], // Stack of lists for nesting.
- list = make_list( m ),
- last_li,
- loose = false,
- ret = [ stack[0].list ];
-
- // Loop to search over block looking for inner block elements and loose lists
- loose_search:
- while( true ) {
- // Split into lines preserving new lines at end of line
- var lines = block.split( /(?=\n)/ );
-
- // We have to grab all lines for a li and call processInline on them
- // once as there are some inline things that can span lines.
- var li_accumulate = "";
-
- // Loop over the lines in this block looking for tight lists.
- tight_search:
- for (var line_no=0; line_no < lines.length; line_no++) {
- var nl = "",
- l = lines[line_no].replace(/^\n/, function(n) { nl = n; return "" });
-
- // TODO: really should cache this
- var line_re = regex_for_depth( stack.length );
-
- m = l.match( line_re );
- //print( "line:", uneval(l), "\nline match:", uneval(m) );
-
- // We have a list item
- if ( m[1] !== undefined ) {
- // Process the previous list item, if any
- if ( li_accumulate.length ) {
- add( last_li, loose, this.processInline( li_accumulate ), nl );
- // Loose mode will have been dealt with. Reset it
- loose = false;
- li_accumulate = "";
- }
-
- m[1] = expand_tab( m[1] );
- var wanted_depth = Math.floor(m[1].length/4)+1;
- //print( "want:", wanted_depth, "stack:", stack.length);
- if ( wanted_depth > stack.length ) {
- // Deep enough for a nested list outright
- //print ( "new nested list" );
- list = make_list( m );
- last_li.push( list );
- last_li = list[1] = [ "listitem" ];
- }
- else {
- // We aren't deep enough to be strictly a new level. This is
- // where Md.pl goes nuts. If the indent matches a level in the
- // stack, put it there, else put it one deeper then the
- // wanted_depth deserves.
- var found = stack.some(function(s, i) {
- if ( s.indent != m[1] ) return false;
- list = s.list; // Found the level we want
- stack.splice(i+1); // Remove the others
- //print("found");
- return true; // And stop looping
- });
-
- if (!found) {
- //print("not found. l:", uneval(l));
- wanted_depth++;
- if (wanted_depth <= stack.length) {
- stack.splice(wanted_depth);
- //print("Desired depth now", wanted_depth, "stack:", stack.length);
- list = stack[wanted_depth-1].list;
- //print("list:", uneval(list) );
- }
- else {
- //print ("made new stack for messy indent");
- list = make_list(m);
- last_li.push(list);
- }
- }
-
- //print( uneval(list), "last", list === stack[stack.length-1].list );
- last_li = [ "listitem" ];
- list.push(last_li);
- } // end depth of shenegains
- nl = "";
- }
-
- // Add content
- if (l.length > m[0].length) {
- li_accumulate += nl + l.substr( m[0].length );
- }
- } // tight_search
-
- if ( li_accumulate.length ) {
- add( last_li, loose, this.processInline( li_accumulate ), nl );
- // Loose mode will have been dealt with. Reset it
- loose = false;
- li_accumulate = "";
- }
-
- // Look at the next block - we might have a loose list. Or an extra
- // paragraph for the current li
- var contained = get_contained_blocks( stack.length, next );
-
- // Deal with code blocks or properly nested lists
- if (contained.length > 0) {
- // Make sure all listitems up the stack are paragraphs
- stack.forEach( paragraphify, this );
-
- last_li.push.apply( last_li, this.toTree( contained, [] ) );
- }
-
- var next_block = next[0] && next[0].valueOf() || "";
-
- if ( next_block.match(is_list_re) || next_block.match( /^ / ) ) {
- block = next.shift();
-
- // Check for an HR following a list: features/lists/hr_abutting
- var hr = this.dialect.block.horizRule( block, next );
-
- if (hr) {
- ret.push.apply(ret, hr);
- break;
- }
-
- // Make sure all listitems up the stack are paragraphs
- stack.forEach( paragraphify , this );
-
- loose = true;
- continue loose_search;
- }
- break;
- } // loose_search
-
- return ret;
- }
- })(),
-
- blockquote: function blockquote( block, next ) {
- if ( !block.match( /^>/m ) )
- return undefined;
-
- var jsonml = [];
-
- // separate out the leading abutting block, if any
- if ( block[ 0 ] != ">" ) {
- var lines = block.split( /\n/ ),
- prev = [];
-
- // keep shifting lines until you find a crotchet
- while ( lines.length && lines[ 0 ][ 0 ] != ">" ) {
- prev.push( lines.shift() );
- }
-
- // reassemble!
- block = lines.join( "\n" );
- jsonml.push.apply( jsonml, this.processBlock( prev.join( "\n" ), [] ) );
- }
-
- // if the next block is also a blockquote merge it in
- while ( next.length && next[ 0 ][ 0 ] == ">" ) {
- var b = next.shift();
- block += block.trailing + b;
- block.trailing = b.trailing;
- }
-
- // Strip off the leading "> " and re-process as a block.
- var input = block.replace( /^> ?/gm, '' ),
- old_tree = this.tree;
- jsonml.push( this.toTree( input, [ "blockquote" ] ) );
-
- return jsonml;
- },
-
- referenceDefn: function referenceDefn( block, next) {
- var re = /^\s*\[(.*?)\]:\s*(\S+)(?:\s+(?:(['"])(.*?)\3|\((.*?)\)))?\n?/;
- // interesting matches are [ , ref_id, url, , title, title ]
-
- if ( !block.match(re) )
- return undefined;
-
- // make an attribute node if it doesn't exist
- if ( !extract_attr( this.tree ) ) {
- this.tree.splice( 1, 0, {} );
- }
-
- var attrs = extract_attr( this.tree );
-
- // make a references hash if it doesn't exist
- if ( attrs.references === undefined ) {
- attrs.references = {};
- }
-
- var b = this.loop_re_over_block(re, block, function( m ) {
-
- if ( m[2] && m[2][0] == '<' && m[2][m[2].length-1] == '>' )
- m[2] = m[2].substring( 1, m[2].length - 1 );
-
- var ref = attrs.references[ m[1].toLowerCase() ] = {
- href: m[2]
- };
-
- if (m[4] !== undefined)
- ref.title = m[4];
- else if (m[5] !== undefined)
- ref.title = m[5];
-
- } );
-
- if (b.length)
- next.unshift( mk_block( b, block.trailing ) );
-
- return [];
- },
-
- para: function para( block, next ) {
- // everything's a para!
- return [ ["para"].concat( this.processInline( block ) ) ];
- }
- }
-}
-
-Markdown.dialects.Gruber.inline = {
- __call__: function inline( text, patterns ) {
- // Hmmm - should this function be directly in Md#processInline, or
- // conversely, should Md#processBlock be moved into block.__call__ too
- var out = [ ],
- m,
- // Look for the next occurange of a special character/pattern
- re = new RegExp( "([\\s\\S]*?)(" + (patterns.source || patterns) + ")", "g" ),
- lastIndex = 0;
-
- //D:var self = this;
- //D:self.debug("processInline:", uneval(text) );
- function add(x) {
- //D:self.debug(" adding output", uneval(x));
- if (typeof x == "string" && typeof out[out.length-1] == "string")
- out[ out.length-1 ] += x;
- else
- out.push(x);
- }
-
- while ( ( m = re.exec(text) ) != null) {
- if ( m[1] ) add( m[1] ); // Some un-interesting text matched
- else m[1] = { length: 0 }; // Or there was none, but make m[1].length == 0
-
- var res;
- if ( m[2] in this.dialect.inline ) {
- res = this.dialect.inline[ m[2] ].call(
- this,
- text.substr( m.index + m[1].length ), m, out );
- }
- // Default for now to make dev easier. just slurp special and output it.
- res = res || [ m[2].length, m[2] ];
-
- var len = res.shift();
- // Update how much input was consumed
- re.lastIndex += ( len - m[2].length );
-
- // Add children
- res.forEach(add);
-
- lastIndex = re.lastIndex;
- }
-
- // Add last 'boring' chunk
- if ( text.length > lastIndex )
- add( text.substr( lastIndex ) );
-
- return out;
- },
-
- "\\": function escaped( text ) {
- // [ length of input processed, node/children to add... ]
- // Only esacape: \ ` * _ { } [ ] ( ) # * + - . !
- if ( text.match( /^\\[\\`\*_{}\[\]()#\+.!\-]/ ) )
- return [ 2, text[1] ];
- else
- // Not an esacpe
- return [ 1, "\\" ];
- },
-
- "
- // 1 2 3 4 <--- captures
- var m = text.match( /^!\[(.*?)\][ \t]*\([ \t]*(\S*)(?:[ \t]+(["'])(.*?)\3)?[ \t]*\)/ );
-
- if ( m ) {
- if ( m[2] && m[2][0] == '<' && m[2][m[2].length-1] == '>' )
- m[2] = m[2].substring( 1, m[2].length - 1 );
-
- m[2] == this.dialect.inline.__call__.call( this, m[2], /\\/ )[0];
-
- var attrs = { alt: m[1], href: m[2] || "" };
- if ( m[4] !== undefined)
- attrs.title = m[4];
-
- return [ m[0].length, [ "img", attrs ] ];
- }
-
- // ![Alt text][id]
- m = text.match( /^!\[(.*?)\][ \t]*\[(.*?)\]/ );
-
- if ( m ) {
- // We can't check if the reference is known here as it likely wont be
- // found till after. Check it in md tree->hmtl tree conversion
- return [ m[0].length, [ "img_ref", { alt: m[1], ref: m[2].toLowerCase(), text: m[0] } ] ];
- }
-
- // Just consume the '!['
- return [ 2, "![" ];
- },
-
- "[": function link( text ) {
- // [link text](/path/to/img.jpg "Optional title")
- // 1 2 3 4 <--- captures
- var m = text.match( /^\[([\s\S]*?)\][ \t]*\([ \t]*(\S+)(?:[ \t]+(["'])(.*?)\3)?[ \t]*\)/ );
-
- if ( m ) {
- if ( m[2] && m[2][0] == '<' && m[2][m[2].length-1] == '>' )
- m[2] = m[2].substring( 1, m[2].length - 1 );
-
- // Process escapes only
- m[2] = this.dialect.inline.__call__.call( this, m[2], /\\/ )[0];
-
- var attrs = { href: m[2] || "" };
- if ( m[4] !== undefined)
- attrs.title = m[4];
-
- return [ m[0].length, [ "link", attrs, m[1] ] ];
- }
-
- // [Alt text][id]
- // [Alt text] [id]
- // [id]
- m = text.match( /^\[([\s\S]*?)\](?: ?\[(.*?)\])?/ );
-
- if ( m ) {
- // [id] case, text == id
- if ( m[2] === undefined || m[2] === "" ) m[2] = m[1];
-
- // We can't check if the reference is known here as it likely wont be
- // found till after. Check it in md tree->hmtl tree conversion.
- // Store the original so that conversion can revert if the ref isn't found.
- return [
- m[ 0 ].length,
- [
- "link_ref",
- {
- ref: m[ 2 ].toLowerCase(),
- original: m[ 0 ]
- },
- m[ 1 ]
- ]
- ];
- }
-
- // Just consume the '['
- return [ 1, "[" ];
- },
-
-
- "<": function autoLink( text ) {
- var m;
-
- if ( ( m = text.match( /^<(?:((https?|ftp|mailto):[^>]+)|(.*?@.*?\.[a-zA-Z]+))>/ ) ) != null ) {
- if ( m[3] ) {
- return [ m[0].length, [ "link", { href: "mailto:" + m[3] }, m[3] ] ];
-
- }
- else if ( m[2] == "mailto" ) {
- return [ m[0].length, [ "link", { href: m[1] }, m[1].substr("mailto:".length ) ] ];
- }
- else
- return [ m[0].length, [ "link", { href: m[1] }, m[1] ] ];
- }
-
- return [ 1, "<" ];
- },
-
- "`": function inlineCode( text ) {
- // Inline code block. as many backticks as you like to start it
- // Always skip over the opening ticks.
- var m = text.match( /(`+)(([\s\S]*?)\1)/ );
-
- if ( m && m[2] )
- return [ m[1].length + m[2].length, [ "inlinecode", m[3] ] ];
- else {
- // TODO: No matching end code found - warn!
- return [ 1, "`" ];
- }
- },
-
- " \n": function lineBreak( text ) {
- return [ 3, [ "linebreak" ] ];
- }
-
-}
-
-// Meta Helper/generator method for em and strong handling
-function strong_em( tag, md ) {
-
- var state_slot = tag + "_state",
- other_slot = tag == "strong" ? "em_state" : "strong_state";
-
- function CloseTag(len) {
- this.len_after = len;
- this.name = "close_" + md;
- }
-
- return function ( text, orig_match ) {
-
- if (this[state_slot][0] == md) {
- // Most recent em is of this type
- //D:this.debug("closing", md);
- this[state_slot].shift();
-
- // "Consume" everything to go back to the recrusion in the else-block below
- return[ text.length, new CloseTag(text.length-md.length) ];
- }
- else {
- // Store a clone of the em/strong states
- var other = this[other_slot].slice(),
- state = this[state_slot].slice();
-
- this[state_slot].unshift(md);
-
- //D:this.debug_indent += " ";
-
- // Recurse
- var res = this.processInline( text.substr( md.length ) );
- //D:this.debug_indent = this.debug_indent.substr(2);
-
- var last = res[res.length - 1];
-
- //D:this.debug("processInline from", tag + ": ", uneval( res ) );
-
- var check = this[state_slot].shift();
- if (last instanceof CloseTag) {
- res.pop();
- // We matched! Huzzah.
- var consumed = text.length - last.len_after;
- return [ consumed, [ tag ].concat(res) ];
- }
- else {
- // Restore the state of the other kind. We might have mistakenly closed it.
- this[other_slot] = other;
- this[state_slot] = state;
-
- // We can't reuse the processed result as it could have wrong parsing contexts in it.
- return [ md.length, md ];
- }
- }
- } // End returned function
-}
-
-Markdown.dialects.Gruber.inline["**"] = strong_em("strong", "**");
-Markdown.dialects.Gruber.inline["__"] = strong_em("strong", "__");
-Markdown.dialects.Gruber.inline["*"] = strong_em("em", "*");
-Markdown.dialects.Gruber.inline["_"] = strong_em("em", "_");
-
-
-// Build default order from insertion order.
-Markdown.buildBlockOrder = function(d) {
- var ord = [];
- for ( var i in d ) {
- if ( i == "__order__" || i == "__call__" ) continue;
- ord.push( i );
- }
- d.__order__ = ord;
-}
-
-// Build patterns for inline matcher
-Markdown.buildInlinePatterns = function(d) {
- var patterns = [];
-
- for ( var i in d ) {
- if (i == "__call__") continue;
- var l = i.replace( /([\\.*+?|()\[\]{}])/g, "\\$1" )
- .replace( /\n/, "\\n" );
- patterns.push( i.length == 1 ? l : "(?:" + l + ")" );
- }
-
- patterns = patterns.join("|");
- //print("patterns:", uneval( patterns ) );
-
- var fn = d.__call__;
- d.__call__ = function(text, pattern) {
- if (pattern != undefined)
- return fn.call(this, text, pattern);
- else
- return fn.call(this, text, patterns);
- }
-}
-
-// Helper function to make sub-classing a dialect easier
-Markdown.subclassDialect = function( d ) {
- function Block() {};
- Block.prototype = d.block;
- function Inline() {};
- Inline.prototype = d.inline;
-
- return { block: new Block(), inline: new Inline() };
-}
-
-Markdown.buildBlockOrder ( Markdown.dialects.Gruber.block );
-Markdown.buildInlinePatterns( Markdown.dialects.Gruber.inline );
-
-Markdown.dialects.Maruku = Markdown.subclassDialect( Markdown.dialects.Gruber );
-
-Markdown.dialects.Maruku.block.document_meta = function document_meta( block, next ) {
- // we're only interested in the first block
- if ( block.lineNumber > 1 ) return undefined;
-
- // document_meta blocks consist of one or more lines of `Key: Value\n`
- if ( ! block.match( /^(?:\w+:.*\n)*\w+:.*$/ ) ) return undefined;
-
- // make an attribute node if it doesn't exist
- if ( !extract_attr( this.tree ) ) {
- this.tree.splice( 1, 0, {} );
- }
-
- var pairs = block.split( /\n/ );
- for ( p in pairs ) {
- var m = pairs[ p ].match( /(\w+):\s*(.*)$/ ),
- key = m[ 1 ].toLowerCase(),
- value = m[ 2 ];
-
- this.tree[ 1 ][ key ] = value;
- }
-
- // document_meta produces no content!
- return [];
-}
-
-Markdown.dialects.Maruku.block.block_meta = function block_meta( block, next ) {
- // check if the last line of the block is an meta hash
- var m = block.match( /(^|\n) {0,3}\{:\s*((?:\\\}|[^\}])*)\s*\}$/ );
- if ( !m ) return undefined;
-
- // process the meta hash
- var attr = process_meta_hash( m[ 2 ] );
-
- // if we matched ^ then we need to apply meta to the previous block
- if ( m[ 1 ] === "" ) {
- var node = this.tree[ this.tree.length - 1 ],
- hash = extract_attr( node );
-
- // if the node is a string (rather than JsonML), bail
- if ( typeof node === "string" ) return undefined;
-
- // create the attribute hash if it doesn't exist
- if ( !hash ) {
- hash = {};
- node.splice( 1, 0, hash );
- }
-
- // add the attributes in
- for ( a in attr ) {
- hash[ a ] = attr[ a ];
- }
-
- // return nothing so the meta hash is removed
- return [];
- }
-
- // pull the meta hash off the block and process what's left
- var b = block.replace( /\n.*$/, "" ),
- result = this.processBlock( b, [] );
-
- // get or make the attributes hash
- var hash = extract_attr( result[ 0 ] );
- if ( !hash ) {
- hash = {};
- result[ 0 ].splice( 1, 0, hash );
- }
-
- // attach the attributes to the block
- for ( a in attr ) {
- hash[ a ] = attr[ a ];
- }
-
- return result;
-}
-
-Markdown.dialects.Maruku.block.definition_list = function definition_list( block, next ) {
- // one or more terms followed by one or more definitions, in a single block
- var tight = /^((?:[^\s:].*\n)+):\s+([^]+)$/,
- list = [ "dl" ];
-
- // see if we're dealing with a tight or loose block
- if ( ( m = block.match( tight ) ) ) {
- // pull subsequent tight DL blocks out of `next`
- var blocks = [ block ];
- while ( next.length && tight.exec( next[ 0 ] ) ) {
- blocks.push( next.shift() );
- }
-
- for ( var b = 0; b < blocks.length; ++b ) {
- var m = blocks[ b ].match( tight ),
- terms = m[ 1 ].replace( /\n$/, "" ).split( /\n/ ),
- defns = m[ 2 ].split( /\n:\s+/ );
-
- // print( uneval( m ) );
-
- for ( var i = 0; i < terms.length; ++i ) {
- list.push( [ "dt", terms[ i ] ] );
- }
-
- for ( var i = 0; i < defns.length; ++i ) {
- // run inline processing over the definition
- list.push( [ "dd" ].concat( this.processInline( defns[ i ].replace( /(\n)\s+/, "$1" ) ) ) );
- }
- }
- }
- else {
- return undefined;
- }
-
- return [ list ];
-}
-
-Markdown.dialects.Maruku.inline[ "{:" ] = function inline_meta( text, matches, out ) {
- if ( !out.length ) {
- return [ 2, "{:" ];
- }
-
- // get the preceeding element
- var before = out[ out.length - 1 ];
-
- if ( typeof before === "string" ) {
- return [ 2, "{:" ];
- }
-
- // match a meta hash
- var m = text.match( /^\{:\s*((?:\\\}|[^\}])*)\s*\}/ );
-
- // no match, false alarm
- if ( !m ) {
- return [ 2, "{:" ];
- }
-
- // attach the attributes to the preceeding element
- var meta = process_meta_hash( m[ 1 ] ),
- attr = extract_attr( before );
-
- if ( !attr ) {
- attr = {};
- before.splice( 1, 0, attr );
- }
-
- for ( var k in meta ) {
- attr[ k ] = meta[ k ];
- }
-
- // cut out the string and replace it with nothing
- return [ m[ 0 ].length, "" ];
-}
-
-Markdown.buildBlockOrder ( Markdown.dialects.Maruku.block );
-Markdown.buildInlinePatterns( Markdown.dialects.Maruku.inline );
-
-function extract_attr( jsonml ) {
- return jsonml instanceof Array
- && jsonml.length > 1
- && typeof jsonml[ 1 ] === "object"
- && !( jsonml[ 1 ] instanceof Array )
- ? jsonml[ 1 ]
- : undefined;
-}
-
-function process_meta_hash( meta_string ) {
- var meta = split_meta_hash( meta_string ),
- attr = {};
-
- for ( var i = 0; i < meta.length; ++i ) {
- // id: #foo
- if ( /^#/.test( meta[ i ] ) ) {
- attr.id = meta[ i ].substring( 1 );
- }
- // class: .foo
- else if ( /^\./.test( meta[ i ] ) ) {
- // if class already exists, append the new one
- if ( attr['class'] ) {
- attr['class'] = attr['class'] + meta[ i ].replace( /./, " " );
- }
- else {
- attr['class'] = meta[ i ].substring( 1 );
- }
- }
- // attribute: foo=bar
- else if ( /=/.test( meta[ i ] ) ) {
- var s = meta[ i ].split( /=/ );
- attr[ s[ 0 ] ] = s[ 1 ];
- }
- }
-
- return attr;
-}
-
-function split_meta_hash( meta_string ) {
- var meta = meta_string.split( "" ),
- parts = [ "" ],
- in_quotes = false;
-
- while ( meta.length ) {
- var letter = meta.shift();
- switch ( letter ) {
- case " " :
- // if we're in a quoted section, keep it
- if ( in_quotes ) {
- parts[ parts.length - 1 ] += letter;
- }
- // otherwise make a new part
- else {
- parts.push( "" );
- }
- break;
- case "'" :
- case '"' :
- // reverse the quotes and move straight on
- in_quotes = !in_quotes;
- break;
- case "\\" :
- // shift off the next letter to be used straight away.
- // it was escaped so we'll keep it whatever it is
- letter = meta.shift();
- default :
- parts[ parts.length - 1 ] += letter;
- break;
- }
- }
-
- return parts;
-}
-
-/**
- * renderJsonML( jsonml[, options] ) -> String
- * - jsonml (Array): JsonML array to render to XML
- * - options (Object): options
- *
- * Converts the given JsonML into well-formed XML.
- *
- * The options currently understood are:
- *
- * - root (Boolean): wether or not the root node should be included in the
- * output, or just its children. The default `false` is to not include the
- * root itself.
- */
-expose.renderJsonML = function( jsonml, options ) {
- options = options || {};
- // include the root element in the rendered output?
- options.root = options.root || false;
- options.xhtml = options.xhtml || false;
-
- var content = [];
-
- if ( options.root ) {
- content.push( render_tree( jsonml, options.xhtml ) );
- }
- else {
- jsonml.shift(); // get rid of the tag
- if ( jsonml.length && typeof jsonml[ 0 ] === "object" && !( jsonml[ 0 ] instanceof Array ) ) {
- jsonml.shift(); // get rid of the attributes
- }
-
- while ( jsonml.length ) {
- content.push( render_tree( jsonml.shift(), options.xhtml ) );
- }
- }
-
- return content.join( "\n\n" );
-}
-
-function render_tree( jsonml, xhtml ) {
- // basic case
- if ( typeof jsonml === "string" ) {
- return jsonml.replace( /&/g, "&" )
- .replace( /</g, "<" )
- .replace( />/g, ">" );
- }
-
- var tag = jsonml.shift(),
- attributes = {},
- content = [];
-
- if ( jsonml.length && typeof jsonml[ 0 ] === "object" && !( jsonml[ 0 ] instanceof Array ) ) {
- attributes = jsonml.shift();
- }
-
- while ( jsonml.length ) {
- content.push( arguments.callee( jsonml.shift(), xhtml ) );
- }
-
- var tag_attrs = "";
- for ( var a in attributes ) {
- tag_attrs += " " + a + '="' + attributes[ a ] + '"';
- }
-
- // if xhtml, self-close empty tags
- // be careful about adding whitespace here for inline elements
- var markup = "<"+ tag + tag_attrs;
- var contentstr = content.join( "" );
- if ( xhtml && contentstr.length == 0 ) {
- markup += " />";
- }
- else {
- markup += ">" + contentstr + "</" + tag + ">";
- }
- return markup;
-}
-
-function convert_tree_to_html( tree, references ) {
- // shallow clone
- var jsonml = tree.slice( 0 );
-
- // Clone attributes if the exist
- var attrs = extract_attr( jsonml );
- if ( attrs ) {
- jsonml[ 1 ] = {};
- for ( var i in attrs ) {
- jsonml[ 1 ][ i ] = attrs[ i ];
- }
- attrs = jsonml[ 1 ];
- }
-
- // basic case
- if ( typeof jsonml === "string" ) {
- return jsonml;
- }
-
- // convert this node
- switch ( jsonml[ 0 ] ) {
- case "header":
- jsonml[ 0 ] = "h" + jsonml[ 1 ].level;
- delete jsonml[ 1 ].level;
- break;
- case "bulletlist":
- jsonml[ 0 ] = "ul";
- break;
- case "numberlist":
- jsonml[ 0 ] = "ol";
- break;
- case "listitem":
- jsonml[ 0 ] = "li";
- break;
- case "para":
- jsonml[ 0 ] = "p";
- break;
- case "markdown":
- jsonml[ 0 ] = "html";
- if ( attrs ) delete attrs.references;
- break;
- case "code_block":
- jsonml[ 0 ] = "pre";
- var i = attrs ? 2 : 1;
- var code = [ "code" ];
- code.push.apply( code, jsonml.splice( i ) );
- jsonml[ i ] = code;
- break;
- case "inlinecode":
- jsonml[ 0 ] = "code";
- break;
- case "img":
- jsonml[ 1 ].src = jsonml[ 1 ].href;
- delete jsonml[ 1 ].href;
- break;
- case "linebreak":
- jsonml[0] = "br";
- break;
- case "link":
- jsonml[ 0 ] = "a";
- break;
- case "link_ref":
- jsonml[ 0 ] = "a";
-
- // grab this ref and clean up the attribute node
- var ref = references[ attrs.ref ];
-
- // if the reference exists, make the link
- if ( ref ) {
- delete attrs.ref;
-
- // add in the href and title, if present
- attrs.href = ref.href;
- if ( ref.title ) {
- attrs.title = ref.title;
- }
-
- // get rid of the unneeded original text
- delete attrs.original;
- }
- // the reference doesn't exist, so revert to plain text
- else {
- return attrs.original;
- }
- break;
- }
-
- // convert all the children
- var i = 1;
-
- // deal with the attribute node, if it exists
- if ( attrs ) {
- // if there are keys, skip over it
- for ( var key in jsonml[ 1 ] ) {
- i = 2;
- }
- // if there aren't, remove it
- if ( i === 1 ) {
- jsonml.splice( i, 1 );
- }
- }
-
- for ( ; i < jsonml.length; ++i ) {
- jsonml[ i ] = arguments.callee( jsonml[ i ], references );
- }
-
- return jsonml;
-}
-
-
-// merges adjacent text nodes into a single node
-function merge_text_nodes( jsonml ) {
- // skip the tag name and attribute hash
- var i = extract_attr( jsonml ) ? 2 : 1;
-
- while ( i < jsonml.length ) {
- // if it's a string check the next item too
- if ( typeof jsonml[ i ] === "string" ) {
- if ( i + 1 < jsonml.length && typeof jsonml[ i + 1 ] === "string" ) {
- // merge the second string into the first and remove it
- jsonml[ i ] += jsonml.splice( i + 1, 1 )[ 0 ];
- }
- else {
- ++i;
- }
- }
- // if it's not a string recurse
- else {
- arguments.callee( jsonml[ i ] );
- ++i;
- }
- }
-}
-
-})(exports);
projects / platform / upstream / nodejs.git / commitdiff