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+// stmd.js - "standard markdown" in javascript
+// Copyright (C) 2014 John MacFarlane
+// License: BSD3.
+
+// Basic usage:
+//
+// var stmd = require('stmd');
+// var parser = new stmd.DocParser();
+// var renderer = new stmd.HtmlRenderer();
+// console.log(renderer.render(parser.parse('Hello *world*')));
+
+(function(exports) {
+
+// Some regexps used in inline parser:
+
+var ESCAPABLE = '[!"#$%&\'()*+,./:;<=>?@[\\\\\\]^_`{|}~-]';
+var ESCAPED_CHAR = '\\\\' + ESCAPABLE;
+var IN_DOUBLE_QUOTES = '"(' + ESCAPED_CHAR + '|[^"\\x00])*"';
+var IN_SINGLE_QUOTES = '\'(' + ESCAPED_CHAR + '|[^\'\\x00])*\'';
+var IN_PARENS = '\\((' + ESCAPED_CHAR + '|[^)\\x00])*\\)';
+var REG_CHAR = '[^\\\\()\\x00-\\x20]';
+var IN_PARENS_NOSP = '\\((' + REG_CHAR + '|' + ESCAPED_CHAR + ')*\\)';
+var TAGNAME = '[A-Za-z][A-Za-z0-9]*';
+var BLOCKTAGNAME = '(?:article|header|aside|hgroup|blockquote|hr|body|li|br|map|button|object|canvas|ol|caption|output|col|p|colgroup|pre|dd|progress|div|section|dl|table|td|dt|tbody|embed|textarea|fieldset|tfoot|figcaption|th|figure|thead|footer|footer|tr|form|ul|h1|h2|h3|h4|h5|h6|video|script|style)';
+var ATTRIBUTENAME = '[a-zA-Z_:][a-zA-Z0-9:._-]*';
+var UNQUOTEDVALUE = "[^\"'=<>`\\x00-\\x20]+";
+var SINGLEQUOTEDVALUE = "'[^']*'";
+var DOUBLEQUOTEDVALUE = '"[^"]*"';
+var ATTRIBUTEVALUE = "(?:" + UNQUOTEDVALUE + "|" + SINGLEQUOTEDVALUE + "|" + DOUBLEQUOTEDVALUE + ")";
+var ATTRIBUTEVALUESPEC = "(?:" + "\\s*=" + "\\s*" + ATTRIBUTEVALUE + ")";
+var ATTRIBUTE = "(?:" + "\\s+" + ATTRIBUTENAME + ATTRIBUTEVALUESPEC + "?)";
+var OPENTAG = "<" + TAGNAME + ATTRIBUTE + "*" + "\\s*/?>";
+var CLOSETAG = "</" + TAGNAME + "\\s*[>]";
+var OPENBLOCKTAG = "<" + BLOCKTAGNAME + ATTRIBUTE + "*" + "\\s*/?>";
+var CLOSEBLOCKTAG = "</" + BLOCKTAGNAME + "\\s*[>]";
+var HTMLCOMMENT = "<!--([^-]+|[-][^-]+)*-->";
+var PROCESSINGINSTRUCTION = "[<][?].*?[?][>]";
+var DECLARATION = "<![A-Z]+" + "\\s+[^>]*>";
+var CDATA = "<!\\[CDATA\\[([^\\]]+|\\][^\\]]|\\]\\][^>])*\\]\\]>";
+var HTMLTAG = "(?:" + OPENTAG + "|" + CLOSETAG + "|" + HTMLCOMMENT + "|" +
+ PROCESSINGINSTRUCTION + "|" + DECLARATION + "|" + CDATA + ")";
+var HTMLBLOCKOPEN = "<(?:" + BLOCKTAGNAME + "[\\s/>]" + "|" +
+ "/" + BLOCKTAGNAME + "[\\s>]" + "|" + "[?!])";
+
+var reHtmlTag = new RegExp('^' + HTMLTAG, 'i');
+
+var reHtmlBlockOpen = new RegExp('^' + HTMLBLOCKOPEN, 'i');
+
+var reLinkTitle = new RegExp(
+ '^(?:"(' + ESCAPED_CHAR + '|[^"\\x00])*"' +
+ '|' +
+ '\'(' + ESCAPED_CHAR + '|[^\'\\x00])*\'' +
+ '|' +
+ '\\((' + ESCAPED_CHAR + '|[^)\\x00])*\\))');
+
+var reLinkDestinationBraces = new RegExp(
+ '[<](?:[^<>\\n\\\\\\x00]' + '|' + ESCAPED_CHAR + '|' + '\\\\)*[>]');
+
+var reLinkDestination = new RegExp(
+ '(?:' + REG_CHAR + '+|' + ESCAPED_CHAR + '|' + IN_PARENS_NOSP + ')*');
+
+var reEscapable = new RegExp(ESCAPABLE);
+
+var reAllEscapedChar = new RegExp('\\\\(' + ESCAPABLE + ')', 'g');
+
+var reEscapedChar = new RegExp('^\\\\(' + ESCAPABLE + ')');
+
+var reAllTab = /\t/g;
+
+var reHrule = /^(?:(?:\* *){3,}|(?:_ *){3,}|(?:- *){3,}) *$/;
+
+// Matches a character with a special meaning in markdown,
+// or a string of non-special characters.
+var reMain = /[\n`\[\]\\!<&*_]|[^\n`\[\]\\!<&*_]+/m;
+
+// UTILITY FUNCTIONS
+
+// Replace backslash escapes with literal characters.
+var unescape = function(s) {
+ return s.replace(reAllEscapedChar, '$1');
+};
+
+// Returns true if string contains only space characters.
+var isBlank = function(s) {
+ return /^\s*$/.test(s);
+};
+
+// Normalize reference label: collapse internal whitespace
+// to single space, remove leading/trailing whitespace, case fold.
+var normalizeReference = function(s) {
+ return s.trim()
+ .replace(/\s+/,' ')
+ .toUpperCase();
+};
+
+// Attempt to match a regex in string s at offset offset.
+// Return index of match or null.
+var matchAt = function(re, s, offset) {
+ var res = s.slice(offset).match(re);
+ if (res) {
+ return offset + res.index;
+ } else {
+ return null;
+ }
+};
+
+// Convert tabs to spaces on each line using a 4-space tab stop.
+var detabLine = function(text) {
+ if (text.indexOf('\t') == -1) {
+ return text;
+ } else {
+ var lastStop = 0;
+ return text.replace(reAllTab, function(match, offset) {
+ var result = ' '.slice((offset - lastStop) % 4);
+ lastStop = offset + 1;
+ return result;
+ });
+ }
+};
+
+// INLINE PARSER
+
+// These are methods of an InlineParser object, defined below.
+// An InlineParser keeps track of a subject (a string to be
+// parsed) and a position in that subject.
+
+// If re matches at current position in the subject, advance
+// position in subject and return the match; otherwise return null.
+var match = function(re) {
+ var match = re.exec(this.subject.slice(this.pos));
+ if (match) {
+ this.pos += match.index + match[0].length;
+ return match[0];
+ } else {
+ return null;
+ }
+};
+
+// Returns the character at the current subject position, or null if
+// there are no more characters.
+var peek = function() {
+ return this.subject[this.pos] || null;
+};
+
+// Parse zero or more space characters, including at most one newline
+var spnl = function() {
+ this.match(/^ *(?:\n *)?/);
+ return 1;
+};
+
+// All of the parsers below try to match something at the current position
+// in the subject. If they succeed in matching anything, they
+// push an inline element onto the 'inlines' list. They return the
+// number of characters parsed (possibly 0).
+
+// Attempt to parse backticks, adding either a backtick code span or a
+// literal sequence of backticks to the 'inlines' list.
+var parseBackticks = function(inlines) {
+ var startpos = this.pos;
+ var ticks = this.match(/^`+/);
+ if (!ticks) {
+ return 0;
+ }
+ var afterOpenTicks = this.pos;
+ var foundCode = false;
+ var match;
+ while (!foundCode && (match = this.match(/`+/m))) {
+ if (match == ticks) {
+ inlines.push({ t: 'Code', c: this.subject.slice(afterOpenTicks,
+ this.pos - ticks.length)
+ .replace(/[ \n]+/g,' ')
+ .trim() });
+ return (this.pos - startpos);
+ }
+ }
+ // If we got here, we didn't match a closing backtick sequence.
+ inlines.push({ t: 'Str', c: ticks });
+ this.pos = afterOpenTicks;
+ return (this.pos - startpos);
+};
+
+// Parse a backslash-escaped special character, adding either the escaped
+// character, a hard line break (if the backslash is followed by a newline),
+// or a literal backslash to the 'inlines' list.
+var parseEscaped = function(inlines) {
+ var subj = this.subject,
+ pos = this.pos;
+ if (subj[pos] === '\\') {
+ if (subj[pos + 1] === '\n') {
+ inlines.push({ t: 'Hardbreak' });
+ this.pos = this.pos + 2;
+ return 2;
+ } else if (reEscapable.test(subj[pos + 1])) {
+ inlines.push({ t: 'Str', c: subj[pos + 1] });
+ this.pos = this.pos + 2;
+ return 2;
+ } else {
+ this.pos++;
+ inlines.push({t: 'Str', c: '\\'});
+ return 1;
+ }
+ } else {
+ return 0;
+ }
+};
+
+// Attempt to parse an autolink (URL or email in pointy brackets).
+var parseAutolink = function(inlines) {
+ var m;
+ var dest;
+ if ((m = this.match(/^<([a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*)>/))) { // email autolink
+ dest = m.slice(1,-1);
+ inlines.push({ t: 'Link', label: [{ t: 'Str', c: dest }],
+ destination: 'mailto:' + dest });
+ return m.length;
+ } else if ((m = this.match(/^<(?:coap|doi|javascript|aaa|aaas|about|acap|cap|cid|crid|data|dav|dict|dns|file|ftp|geo|go|gopher|h323|http|https|iax|icap|im|imap|info|ipp|iris|iris.beep|iris.xpc|iris.xpcs|iris.lwz|ldap|mailto|mid|msrp|msrps|mtqp|mupdate|news|nfs|ni|nih|nntp|opaquelocktoken|pop|pres|rtsp|service|session|shttp|sieve|sip|sips|sms|snmp|soap.beep|soap.beeps|tag|tel|telnet|tftp|thismessage|tn3270|tip|tv|urn|vemmi|ws|wss|xcon|xcon-userid|xmlrpc.beep|xmlrpc.beeps|xmpp|z39.50r|z39.50s|adiumxtra|afp|afs|aim|apt|attachment|aw|beshare|bitcoin|bolo|callto|chrome|chrome-extension|com-eventbrite-attendee|content|cvs|dlna-playsingle|dlna-playcontainer|dtn|dvb|ed2k|facetime|feed|finger|fish|gg|git|gizmoproject|gtalk|hcp|icon|ipn|irc|irc6|ircs|itms|jar|jms|keyparc|lastfm|ldaps|magnet|maps|market|message|mms|ms-help|msnim|mumble|mvn|notes|oid|palm|paparazzi|platform|proxy|psyc|query|res|resource|rmi|rsync|rtmp|secondlife|sftp|sgn|skype|smb|soldat|spotify|ssh|steam|svn|teamspeak|things|udp|unreal|ut2004|ventrilo|view-source|webcal|wtai|wyciwyg|xfire|xri|ymsgr):[^<>\x00-\x20]*>/i))) {
+ dest = m.slice(1,-1);
+ inlines.push({ t: 'Link', label: [{ t: 'Str', c: dest }],
+ destination: dest });
+ return m.length;
+ } else {
+ return 0;
+ }
+};
+
+// Attempt to parse a raw HTML tag.
+var parseHtmlTag = function(inlines) {
+ var m = this.match(reHtmlTag);
+ if (m) {
+ inlines.push({ t: 'Html', c: m });
+ return m.length;
+ } else {
+ return 0;
+ }
+};
+
+// Scan a sequence of characters == c, and return information about
+// the number of delimiters and whether they are positioned such that
+// they can open and/or close emphasis or strong emphasis. A utility
+// function for strong/emph parsing.
+var scanDelims = function(c) {
+ var numdelims = 0;
+ var first_close_delims = 0;
+ var char_before, char_after;
+ var startpos = this.pos;
+
+ char_before = this.pos === 0 ? '\n' :
+ this.subject[this.pos - 1];
+
+ while (this.peek() === c) {
+ numdelims++;
+ this.pos++;
+ }
+
+ char_after = this.peek() || '\n';
+
+ var can_open = numdelims > 0 && numdelims <= 3 && !(/\s/.test(char_after));
+ var can_close = numdelims > 0 && numdelims <= 3 && !(/\s/.test(char_before));
+ if (c === '_') {
+ can_open = can_open && !((/[a-z0-9]/i).test(char_before));
+ can_close = can_close && !((/[a-z0-9]/i).test(char_after));
+ }
+ this.pos = startpos;
+ return { numdelims: numdelims,
+ can_open: can_open,
+ can_close: can_close };
+};
+
+// Attempt to parse emphasis or strong emphasis in an efficient way,
+// with no backtracking.
+var parseEmphasis = function(inlines) {
+ var startpos = this.pos;
+ var c ;
+ var first_close = 0;
+ var nxt = this.peek();
+ if (nxt == '*' || nxt == '_') {
+ c = nxt;
+ } else {
+ return 0;
+ }
+
+ var numdelims;
+ var delimpos;
+
+ // Get opening delimiters.
+ res = this.scanDelims(c);
+ numdelims = res.numdelims;
+ this.pos += numdelims;
+ // We provisionally add a literal string. If we match appropriate
+ // closing delimiters, we'll change this to Strong or Emph.
+ inlines.push({t: 'Str',
+ c: this.subject.substr(this.pos - numdelims, numdelims)});
+ // Record the position of this opening delimiter:
+ delimpos = inlines.length - 1;
+
+ if (!res.can_open || numdelims === 0) {
+ return 0;
+ }
+
+ var first_close_delims = 0;
+
+ switch (numdelims) {
+ case 1: // we started with * or _
+ while (true) {
+ res = this.scanDelims(c);
+ if (res.numdelims >= 1 && res.can_close) {
+ this.pos += 1;
+ // Convert the inline at delimpos, currently a string with the delim,
+ // into an Emph whose contents are the succeeding inlines
+ inlines[delimpos].t = 'Emph';
+ inlines[delimpos].c = inlines.slice(delimpos + 1);
+ inlines.splice(delimpos + 1);
+ break;
+ } else {
+ if (this.parseInline(inlines) === 0) {
+ break;
+ }
+ }
+ }
+ return (this.pos - startpos);
+
+ case 2: // We started with ** or __
+ while (true) {
+ res = this.scanDelims(c);
+ if (res.numdelims >= 2 && res.can_close) {
+ this.pos += 2;
+ inlines[delimpos].t = 'Strong';
+ inlines[delimpos].c = inlines.slice(delimpos + 1);
+ inlines.splice(delimpos + 1);
+ break;
+ } else {
+ if (this.parseInline(inlines) === 0) {
+ break;
+ }
+ }
+ }
+ return (this.pos - startpos);
+
+ case 3: // We started with *** or ___
+ while (true) {
+ res = this.scanDelims(c);
+ if (res.numdelims >= 1 && res.numdelims <= 3 && res.can_close &&
+ res.numdelims != first_close_delims) {
+ if (res.numdelims === 3) {
+ // If we opened with ***, then we interpret *** as * followed by **
+ // giving us <strong><em>
+ res.numdelims = 1;
+ }
+ this.pos += res.numdelims;
+
+ if (first_close > 0) { // if we've already passed the first closer:
+ inlines[delimpos].t = first_close_delims === 1 ? 'Strong' : 'Emph';
+ inlines[delimpos].c = [
+ { t: first_close_delims === 1 ? 'Emph' : 'Strong',
+ c: inlines.slice(delimpos + 1, first_close)}
+ ].concat(inlines.slice(first_close + 1));
+ inlines.splice(delimpos + 1);
+ break;
+ } else { // this is the first closer; for now, add literal string;
+ // we'll change this when he hit the second closer
+ inlines.push({t: 'Str',
+ c: this.subject.slice(this.pos - res.numdelims,
+ this.pos) });
+ first_close = inlines.length - 1;
+ first_close_delims = res.numdelims;
+ }
+ } else { // parse another inline element, til we hit the end
+ if (this.parseInline(inlines) === 0) {
+ break;
+ }
+ }
+ }
+ return (this.pos - startpos);
+
+ default:
+ return result;
+ }
+
+ return 0;
+};
+
+// Attempt to parse link title (sans quotes), returning the string
+// or null if no match.
+var parseLinkTitle = function() {
+ title = this.match(reLinkTitle);
+ if (title) {
+ // chop off quotes from title and unescape:
+ return unescape(title.substr(1, title.length - 2));
+ } else {
+ return null;
+ }
+};
+
+// Attempt to parse link destination, returning the string or
+// null if no match.
+var parseLinkDestination = function() {
+ var res = this.match(reLinkDestinationBraces);
+ if (res) { // chop off surrounding <..>:
+ return unescape(res.substr(1, res.length - 2));
+ } else {
+ res = this.match(reLinkDestination);
+ if (res !== null) {
+ return unescape(res);
+ } else {
+ return null;
+ }
+ }
+};
+
+// Attempt to parse a link label, returning number of characters parsed.
+var parseLinkLabel = function() {
+ if (this.peek() != '[') {
+ return 0;
+ }
+ var startpos = this.pos;
+ var nest_level = 0;
+ if (this.label_nest_level > 0) {
+ // If we've already checked to the end of this subject
+ // for a label, even with a different starting [, we
+ // know we won't find one here and we can just return.
+ // This avoids lots of backtracking.
+ // Note: nest level 1 would be: [foo [bar]
+ // nest level 2 would be: [foo [bar [baz]
+ this.label_nest_level--;
+ return 0;
+ }
+ this.pos++; // advance past [
+ var c;
+ while ((c = this.peek()) && (c != ']' || nest_level > 0)) {
+ switch (c) {
+ case '`':
+ this.parseBackticks([]);
+ break;
+ case '<':
+ this.parseAutolink([]) || this.parseHtmlTag([]) || this.parseString([]);
+ break;
+ case '[': // nested []
+ nest_level++;
+ this.pos++;
+ break;
+ case ']': // nested []
+ nest_level--;
+ this.pos++;
+ break;
+ case '\\':
+ this.parseEscaped([]);
+ break;
+ default:
+ this.parseString([]);
+ }
+ }
+ if (c === ']') {
+ this.label_nest_level = 0;
+ this.pos++; // advance past ]
+ return this.pos - startpos;
+ } else {
+ if (!c) {
+ this.label_nest_level = nest_level;
+ }
+ this.pos = startpos;
+ return 0;
+ }
+};
+
+// Parse raw link label, including surrounding [], and return
+// inline contents. (Note: this is not a method of InlineParser.)
+var parseRawLabel = function(s) {
+ // note: parse without a refmap; we don't want links to resolve
+ // in nested brackets!
+ return new InlineParser().parse(s.substr(1, s.length - 2), {});
+};
+
+// Attempt to parse a link. If successful, add the link to
+// inlines.
+var parseLink = function(inlines) {
+ var startpos = this.pos;
+ var reflabel;
+ var n;
+ var dest;
+ var title;
+
+ n = this.parseLinkLabel();
+ if (n === 0) {
+ return 0;
+ }
+ var afterlabel = this.pos;
+ var rawlabel = this.subject.substr(startpos, n);
+
+ // if we got this far, we've parsed a label.
+ // Try to parse an explicit link: [label](url "title")
+ if (this.peek() == '(') {
+ this.pos++;
+ if (this.spnl() &&
+ ((dest = this.parseLinkDestination()) !== null) &&
+ this.spnl() &&
+ // make sure there's a space before the title:
+ (/^\s/.test(this.subject[this.pos - 1]) &&
+ (title = this.parseLinkTitle() || '') || true) &&
+ this.spnl() &&
+ this.match(/^\)/)) {
+ inlines.push({ t: 'Link',
+ destination: dest,
+ title: title,
+ label: parseRawLabel(rawlabel) });
+ return this.pos - startpos;
+ } else {
+ this.pos = startpos;
+ return 0;
+ }
+ }
+ // If we're here, it wasn't an explicit link. Try to parse a reference link.
+ // first, see if there's another label
+ var savepos = this.pos;
+ this.spnl();
+ var beforelabel = this.pos;
+ n = this.parseLinkLabel();
+ if (n == 2) {
+ // empty second label
+ reflabel = rawlabel;
+ } else if (n > 0) {
+ reflabel = this.subject.slice(beforelabel, beforelabel + n);
+ } else {
+ this.pos = savepos;
+ reflabel = rawlabel;
+ }
+ // lookup rawlabel in refmap
+ var link = this.refmap[normalizeReference(reflabel)];
+ if (link) {
+ inlines.push({t: 'Link',
+ destination: link.destination,
+ title: link.title,
+ label: parseRawLabel(rawlabel) });
+ return this.pos - startpos;
+ } else {
+ this.pos = startpos;
+ return 0;
+ }
+ // Nothing worked, rewind:
+ this.pos = startpos;
+ return 0;
+};
+
+// Attempt to parse an entity, adding to inlines if successful.
+var parseEntity = function(inlines) {
+ var m;
+ if ((m = this.match(/^&(?:#x[a-f0-9]{1,8}|#[0-9]{1,8}|[a-z][a-z0-9]{1,31});/i))) {
+ inlines.push({ t: 'Entity', c: m });
+ return m.length;
+ } else {
+ return 0;
+ }
+};
+
+// Parse a run of ordinary characters, or a single character with
+// a special meaning in markdown, as a plain string, adding to inlines.
+var parseString = function(inlines) {
+ var m;
+ if ((m = this.match(reMain))) {
+ inlines.push({ t: 'Str', c: m });
+ return m.length;
+ } else {
+ return 0;
+ }
+};
+
+// Parse a newline. If it was preceded by two spaces, return a hard
+// line break; otherwise a soft line break.
+var parseNewline = function(inlines) {
+ if (this.peek() == '\n') {
+ this.pos++;
+ var last = inlines[inlines.length - 1];
+ if (last && last.t == 'Str' && last.c.slice(-2) == ' ') {
+ last.c = last.c.replace(/ *$/,'');
+ inlines.push({ t: 'Hardbreak' });
+ } else {
+ if (last && last.t == 'Str' && last.c.slice(-1) == ' ') {
+ last.c = last.c.slice(0, -1);
+ }
+ inlines.push({ t: 'Softbreak' });
+ }
+ return 1;
+ } else {
+ return 0;
+ }
+};
+
+// Attempt to parse an image. If the opening '!' is not followed
+// by a link, add a literal '!' to inlines.
+var parseImage = function(inlines) {
+ if (this.match(/^!/)) {
+ var n = this.parseLink(inlines);
+ if (n === 0) {
+ inlines.push({ t: 'Str', c: '!' });
+ return 1;
+ } else if (inlines[inlines.length - 1] &&
+ inlines[inlines.length - 1].t == 'Link') {
+ inlines[inlines.length - 1].t = 'Image';
+ return n+1;
+ } else {
+ throw "Shouldn't happen";
+ }
+ } else {
+ return 0;
+ }
+};
+
+// Attempt to parse a link reference, modifying refmap.
+var parseReference = function(s, refmap) {
+ this.subject = s;
+ this.pos = 0;
+ var rawlabel;
+ var dest;
+ var title;
+ var matchChars;
+ var startpos = this.pos;
+ var match;
+
+ // label:
+ matchChars = this.parseLinkLabel();
+ if (matchChars === 0) {
+ return 0;
+ } else {
+ rawlabel = this.subject.substr(0, matchChars);
+ }
+
+ // colon:
+ if (this.peek() === ':') {
+ this.pos++;
+ } else {
+ this.pos = startpos;
+ return 0;
+ }
+
+ // link url
+ this.spnl();
+
+ dest = this.parseLinkDestination();
+ if (dest === null || dest.length === 0) {
+ this.pos = startpos;
+ return 0;
+ }
+
+ var beforetitle = this.pos;
+ this.spnl();
+ title = this.parseLinkTitle();
+ if (title === null) {
+ title = '';
+ // rewind before spaces
+ this.pos = beforetitle;
+ }
+
+ // make sure we're at line end:
+ if (this.match(/^ *(?:\n|$)/) === null) {
+ this.pos = startpos;
+ return 0;
+ }
+
+ var normlabel = normalizeReference(rawlabel);
+
+ if (!refmap[normlabel]) {
+ refmap[normlabel] = { destination: dest, title: title };
+ }
+ return this.pos - startpos;
+};
+
+// Parse the next inline element in subject, advancing subject position
+// and adding the result to 'inlines'.
+var parseInline = function(inlines) {
+ var c = this.peek();
+ var res;
+ switch(c) {
+ case '\n':
+ res = this.parseNewline(inlines);
+ break;
+ case '\\':
+ res = this.parseEscaped(inlines);
+ break;
+ case '`':
+ res = this.parseBackticks(inlines);
+ break;
+ case '*':
+ case '_':
+ res = this.parseEmphasis(inlines);
+ break;
+ case '[':
+ res = this.parseLink(inlines);
+ break;
+ case '!':
+ res = this.parseImage(inlines);
+ break;
+ case '<':
+ res = this.parseAutolink(inlines) ||
+ this.parseHtmlTag(inlines);
+ break;
+ case '&':
+ res = this.parseEntity(inlines);
+ break;
+ default:
+ }
+ return res || this.parseString(inlines);
+};
+
+// Parse s as a list of inlines, using refmap to resolve references.
+var parseInlines = function(s, refmap) {
+ this.subject = s;
+ this.pos = 0;
+ this.refmap = refmap || {};
+ var inlines = [];
+ while (this.parseInline(inlines)) ;
+ return inlines;
+};
+
+// The InlineParser object.
+function InlineParser(){
+ return {
+ subject: '',
+ label_nest_level: 0, // used by parseLinkLabel method
+ pos: 0,
+ refmap: {},
+ match: match,
+ peek: peek,
+ spnl: spnl,
+ parseBackticks: parseBackticks,
+ parseEscaped: parseEscaped,
+ parseAutolink: parseAutolink,
+ parseHtmlTag: parseHtmlTag,
+ scanDelims: scanDelims,
+ parseEmphasis: parseEmphasis,
+ parseLinkTitle: parseLinkTitle,
+ parseLinkDestination: parseLinkDestination,
+ parseLinkLabel: parseLinkLabel,
+ parseLink: parseLink,
+ parseEntity: parseEntity,
+ parseString: parseString,
+ parseNewline: parseNewline,
+ parseImage: parseImage,
+ parseReference: parseReference,
+ parseInline: parseInline,
+ parse: parseInlines,
+ };
+}
+
+// DOC PARSER
+
+// These are methods of a DocParser object, defined below.
+
+var makeBlock = function(tag, start_line, start_column) {
+ return { t: tag,
+ open: true,
+ last_line_blank: false,
+ start_line: start_line,
+ start_column: start_column,
+ end_line: start_line,
+ children: [],
+ parent: null,
+ // string_content is formed by concatenating strings, in finalize:
+ string_content: "",
+ strings: [],
+ inline_content: [],
+ };
+};
+
+// Returns true if parent block can contain child block.
+var canContain = function(parent_type, child_type) {
+ return ( parent_type == 'Document' ||
+ parent_type == 'BlockQuote' ||
+ parent_type == 'ListItem' ||
+ (parent_type == 'List' && child_type == 'ListItem') );
+};
+
+// Returns true if block type can accept lines of text.
+var acceptsLines = function(block_type) {
+ return ( block_type == 'Paragraph' ||
+ block_type == 'IndentedCode' ||
+ block_type == 'FencedCode' );
+};
+
+// Returns true if block ends with a blank line, descending if needed
+// into lists and sublists.
+var endsWithBlankLine = function(block) {
+ if (block.last_line_blank) {
+ return true;
+ }
+ if ((block.t == 'List' || block.t == 'ListItem') && block.children.length > 0) {
+ return endsWithBlankLine(block.children[block.children.length - 1]);
+ } else {
+ return false;
+ }
+};
+
+// Break out of all containing lists, resetting the tip of the
+// document to the parent of the highest list, and finalizing
+// all the lists. (This is used to implement the "two blank lines
+// break of of all lists" feature.)
+var breakOutOfLists = function(block, line_number) {
+ var b = block;
+ var last_list = null;
+ do {
+ if (b.t === 'List') {
+ last_list = b;
+ }
+ b = b.parent;
+ } while (b);
+
+ if (last_list) {
+ while (block != last_list) {
+ this.finalize(block, line_number);
+ block = block.parent;
+ }
+ this.finalize(last_list, line_number);
+ this.tip = last_list.parent;
+ }
+};
+
+// Add a line to the block at the tip. We assume the tip
+// can accept lines -- that check should be done before calling this.
+var addLine = function(ln, offset) {
+ var s = ln.slice(offset);
+ if (!(this.tip.open)) {
+ throw({ msg: "Attempted to add line (" + ln + ") to closed container." });
+ }
+ this.tip.strings.push(s);
+};
+
+// Add block of type tag as a child of the tip. If the tip can't
+// accept children, close and finalize it and try its parent,
+// and so on til we find a block that can accept children.
+var addChild = function(tag, line_number, offset) {
+ while (!canContain(this.tip.t, tag)) {
+ this.finalize(this.tip, line_number);
+ }
+
+ var column_number = offset + 1; // offset 0 = column 1
+ var newBlock = makeBlock(tag, line_number, column_number);
+ this.tip.children.push(newBlock);
+ newBlock.parent = this.tip;
+ this.tip = newBlock;
+ return newBlock;
+};
+
+// Parse a list marker and return data on the marker (type,
+// start, delimiter, bullet character, padding) or null.
+var parseListMarker = function(ln, offset) {
+ var rest = ln.slice(offset);
+ var match;
+ var spaces_after_marker;
+ var data = {};
+ if (rest.match(reHrule)) {
+ return null;
+ }
+ if ((match = rest.match(/^[*+-]( +|$)/))) {
+ spaces_after_marker = match[1].length;
+ data.type = 'Bullet';
+ data.bullet_char = match[0][0];
+
+ } else if ((match = rest.match(/^(\d+)([.)])( +|$)/))) {
+ spaces_after_marker = match[3].length;
+ data.type = 'Ordered';
+ data.start = parseInt(match[1]);
+ data.delimiter = match[2];
+ } else {
+ return null;
+ }
+ blank_item = match[0].length === rest.length;
+ if (spaces_after_marker >= 5 ||
+ spaces_after_marker < 1 ||
+ blank_item) {
+ data.padding = match[0].length - spaces_after_marker + 1;
+ } else {
+ data.padding = match[0].length;
+ }
+ return data;
+};
+
+// Returns true if the two list items are of the same type,
+// with the same delimiter and bullet character. This is used
+// in agglomerating list items into lists.
+var listsMatch = function(list_data, item_data) {
+ return (list_data.type === item_data.type &&
+ list_data.delimiter === item_data.delimiter &&
+ list_data.bullet_char === item_data.bullet_char);
+};
+
+// Analyze a line of text and update the document appropriately.
+// We parse markdown text by calling this on each line of input,
+// then finalizing the document.
+var incorporateLine = function(ln, line_number) {
+
+ var all_matched = true;
+ var last_child;
+ var first_nonspace;
+ var offset = 0;
+ var match;
+ var data;
+ var blank;
+ var indent;
+ var last_matched_container;
+ var i;
+ var CODE_INDENT = 4;
+
+ var container = this.doc;
+ var oldtip = this.tip;
+
+ // Convert tabs to spaces:
+ ln = detabLine(ln);
+
+ // For each containing block, try to parse the associated line start.
+ // Bail out on failure: container will point to the last matching block.
+ // Set all_matched to false if not all containers match.
+ while (container.children.length > 0) {
+ last_child = container.children[container.children.length - 1];
+ if (!last_child.open) {
+ break;
+ }
+ container = last_child;
+
+ match = matchAt(/[^ ]/, ln, offset);
+ if (match === null) {
+ first_nonspace = ln.length;
+ blank = true;
+ } else {
+ first_nonspace = match;
+ blank = false;
+ }
+ indent = first_nonspace - offset;
+
+ switch (container.t) {
+ case 'BlockQuote':
+ matched = indent <= 3 && ln[first_nonspace] === '>';
+ if (matched) {
+ offset = first_nonspace + 1;
+ if (ln[offset] === ' ') {
+ offset++;
+ }
+ } else {
+ all_matched = false;
+ }
+ break;
+
+ case 'ListItem':
+ if (indent >= container.list_data.marker_offset +
+ container.list_data.padding) {
+ offset += container.list_data.marker_offset +
+ container.list_data.padding;
+ } else if (blank) {
+ offset = first_nonspace;
+ } else {
+ all_matched = false;
+ }
+ break;
+
+ case 'IndentedCode':
+ if (indent >= CODE_INDENT) {
+ offset += CODE_INDENT;
+ } else if (blank) {
+ offset = first_nonspace;
+ } else {
+ all_matched = false;
+ }
+ break;
+
+ case 'ATXHeader':
+ case 'SetextHeader':
+ case 'HorizontalRule':
+ // a header can never container > 1 line, so fail to match:
+ all_matched = false;
+ break;
+
+ case 'FencedCode':
+ // skip optional spaces of fence offset
+ i = container.fence_offset;
+ while (i > 0 && ln[offset] === ' ') {
+ offset++;
+ i--;
+ }
+ break;
+
+ case 'HtmlBlock':
+ if (blank) {
+ all_matched = false;
+ }
+ break;
+
+ case 'Paragraph':
+ if (blank) {
+ container.last_line_blank = true;
+ all_matched = false;
+ }
+ break;
+
+ default:
+ }
+
+ if (!all_matched) {
+ container = container.parent; // back up to last matching block
+ break;
+ }
+ }
+
+ last_matched_container = container;
+
+ // This function is used to finalize and close any unmatched
+ // blocks. We aren't ready to do this now, because we might
+ // have a lazy paragraph continuation, in which case we don't
+ // want to close unmatched blocks. So we store this closure for
+ // use later, when we have more information.
+ var closeUnmatchedBlocks = function(mythis) {
+ // finalize any blocks not matched
+ while (!already_done && oldtip != last_matched_container) {
+ mythis.finalize(oldtip, line_number);
+ oldtip = oldtip.parent;
+ }
+ var already_done = true;
+ };
+
+ // Check to see if we've hit 2nd blank line; if so break out of list:
+ if (blank && container.last_line_blank) {
+ this.breakOutOfLists(container, line_number);
+ }
+
+ // Unless last matched container is a code block, try new container starts,
+ // adding children to the last matched container:
+ while (container.t != 'FencedCode' &&
+ container.t != 'IndentedCode' &&
+ container.t != 'HtmlBlock' &&
+ // this is a little performance optimization:
+ matchAt(/^[ #`~*+_=<>0-9-]/,ln,offset) !== null) {
+
+ match = matchAt(/[^ ]/, ln, offset);
+ if (match === null) {
+ first_nonspace = ln.length;
+ blank = true;
+ } else {
+ first_nonspace = match;
+ blank = false;
+ }
+ indent = first_nonspace - offset;
+
+ if (indent >= CODE_INDENT) {
+ // indented code
+ if (this.tip.t != 'Paragraph' && !blank) {
+ offset += CODE_INDENT;
+ closeUnmatchedBlocks(this);
+ container = this.addChild('IndentedCode', line_number, offset);
+ } else { // indent > 4 in a lazy paragraph continuation
+ break;
+ }
+
+ } else if (ln[first_nonspace] === '>') {
+ // blockquote
+ offset = first_nonspace + 1;
+ // optional following space
+ if (ln[offset] === ' ') {
+ offset++;
+ }
+ closeUnmatchedBlocks(this);
+ container = this.addChild('BlockQuote', line_number, offset);
+
+ } else if ((match = ln.slice(first_nonspace).match(/^#{1,6}(?: +|$)/))) {
+ // ATX header
+ offset = first_nonspace + match[0].length;
+ closeUnmatchedBlocks(this);
+ container = this.addChild('ATXHeader', line_number, first_nonspace);
+ container.level = match[0].trim().length; // number of #s
+ // remove trailing ###s:
+ container.strings =
+ [ln.slice(offset).replace(/(?:(\\#) *#+| *#+) *$/,'$1')];
+ break;
+
+ } else if ((match = ln.slice(first_nonspace).match(/^`{3,}(?!.*`)|^~{3,}(?!.*~)/))) {
+ // fenced code block
+ var fence_length = match[0].length;
+ closeUnmatchedBlocks(this);
+ container = this.addChild('FencedCode', line_number, first_nonspace);
+ container.fence_length = fence_length;
+ container.fence_char = match[0][0];
+ container.fence_offset = first_nonspace - offset;
+ offset = first_nonspace + fence_length;
+ break;
+
+ } else if (matchAt(reHtmlBlockOpen, ln, first_nonspace) !== null) {
+ // html block
+ closeUnmatchedBlocks(this);
+ container = this.addChild('HtmlBlock', line_number, first_nonspace);
+ // note, we don't adjust offset because the tag is part of the text
+ break;
+
+ } else if (container.t == 'Paragraph' &&
+ container.strings.length === 1 &&
+ ((match = ln.slice(first_nonspace).match(/^(?:=+|-+) *$/)))) {
+ // setext header line
+ closeUnmatchedBlocks(this);
+ container.t = 'SetextHeader'; // convert Paragraph to SetextHeader
+ container.level = match[0][0] === '=' ? 1 : 2;
+ offset = ln.length;
+
+ } else if (matchAt(reHrule, ln, first_nonspace) !== null) {
+ // hrule
+ closeUnmatchedBlocks(this);
+ container = this.addChild('HorizontalRule', line_number, first_nonspace);
+ offset = ln.length - 1;
+ break;
+
+ } else if ((data = parseListMarker(ln, first_nonspace))) {
+ // list item
+ closeUnmatchedBlocks(this);
+ data.marker_offset = indent;
+ offset = first_nonspace + data.padding;
+
+ // add the list if needed
+ if (container.t !== 'List' ||
+ !(listsMatch(container.list_data, data))) {
+ container = this.addChild('List', line_number, first_nonspace);
+ container.list_data = data;
+ }
+
+ // add the list item
+ container = this.addChild('ListItem', line_number, first_nonspace);
+ container.list_data = data;
+
+ } else {
+ break;
+
+ }
+
+ if (acceptsLines(container.t)) {
+ // if it's a line container, it can't contain other containers
+ break;
+ }
+ }
+
+ // What remains at the offset is a text line. Add the text to the
+ // appropriate container.
+
+ match = matchAt(/[^ ]/, ln, offset);
+ if (match === null) {
+ first_nonspace = ln.length;
+ blank = true;
+ } else {
+ first_nonspace = match;
+ blank = false;
+ }
+ indent = first_nonspace - offset;
+
+ // First check for a lazy paragraph continuation:
+ if (this.tip !== last_matched_container &&
+ !blank &&
+ this.tip.t == 'Paragraph' &&
+ this.tip.strings.length > 0) {
+ // lazy paragraph continuation
+
+ this.last_line_blank = false;
+ this.addLine(ln, offset);
+
+ } else { // not a lazy continuation
+
+ // finalize any blocks not matched
+ closeUnmatchedBlocks(this);
+
+ // Block quote lines are never blank as they start with >
+ // and we don't count blanks in fenced code for purposes of tight/loose
+ // lists or breaking out of lists. We also don't set last_line_blank
+ // on an empty list item.
+ container.last_line_blank = blank &&
+ !(container.t == 'BlockQuote' ||
+ container.t == 'FencedCode' ||
+ (container.t == 'ListItem' &&
+ container.children.length === 0 &&
+ container.start_line == line_number));
+
+ var cont = container;
+ while (cont.parent) {
+ cont.parent.last_line_blank = false;
+ cont = cont.parent;
+ }
+
+ switch (container.t) {
+ case 'IndentedCode':
+ case 'HtmlBlock':
+ this.addLine(ln, offset);
+ break;
+
+ case 'FencedCode':
+ // check for closing code fence:
+ match = (indent <= 3 &&
+ ln[first_nonspace] == container.fence_char &&
+ ln.slice(first_nonspace).match(/^(?:`{3,}|~{3,})(?= *$)/));
+ if (match && match[0].length >= container.fence_length) {
+ // don't add closing fence to container; instead, close it:
+ this.finalize(container, line_number);
+ } else {
+ this.addLine(ln, offset);
+ }
+ break;
+
+ case 'ATXHeader':
+ case 'SetextHeader':
+ case 'HorizontalRule':
+ // nothing to do; we already added the contents.
+ break;
+
+ default:
+ if (acceptsLines(container.t)) {
+ this.addLine(ln, first_nonspace);
+ } else if (blank) {
+ // do nothing
+ } else if (container.t != 'HorizontalRule' &&
+ container.t != 'SetextHeader') {
+ // create paragraph container for line
+ container = this.addChild('Paragraph', line_number, first_nonspace);
+ this.addLine(ln, first_nonspace);
+ } else {
+ console.log("Line " + line_number.toString() +
+ " with container type " + container.t +
+ " did not match any condition.");
+
+ }
+ }
+ }
+};
+
+// Finalize a block. Close it and do any necessary postprocessing,
+// e.g. creating string_content from strings, setting the 'tight'
+// or 'loose' status of a list, and parsing the beginnings
+// of paragraphs for reference definitions. Reset the tip to the
+// parent of the closed block.
+var finalize = function(block, line_number) {
+ var pos;
+ // don't do anything if the block is already closed
+ if (!block.open) {
+ return 0;
+ }
+ block.open = false;
+ if (line_number > block.start_line) {
+ block.end_line = line_number - 1;
+ } else {
+ block_end_line = line_number;
+ }
+
+ switch (block.t) {
+ case 'Paragraph':
+ block.string_content = block.strings.join('\n').replace(/^ */m,'');
+
+ // try parsing the beginning as link reference definitions:
+ while (block.string_content[0] === '[' &&
+ (pos = this.inlineParser.parseReference(block.string_content,
+ this.refmap))) {
+ block.string_content = block.string_content.slice(pos);
+ if (isBlank(block.string_content)) {
+ block.t = 'ReferenceDef';
+ break;
+ }
+ }
+ break;
+
+ case 'ATXHeader':
+ case 'SetextHeader':
+ case 'HtmlBlock':
+ block.string_content = block.strings.join('\n');
+ break;
+
+ case 'IndentedCode':
+ block.string_content = block.strings.join('\n').replace(/(\n *)*$/,'\n');
+ break;
+
+ case 'FencedCode':
+ // first line becomes info string
+ block.info = unescape(block.strings[0].trim());
+ if (block.strings.length == 1) {
+ block.string_content = '';
+ } else {
+ block.string_content = block.strings.slice(1).join('\n') + '\n';
+ }
+ break;
+
+ case 'List':
+ block.tight = true; // tight by default
+
+ var numitems = block.children.length;
+ var i = 0;
+ while (i < numitems) {
+ var item = block.children[i];
+ // check for non-final list item ending with blank line:
+ var last_item = i == numitems - 1;
+ if (endsWithBlankLine(item) && !last_item) {
+ block.tight = false;
+ break;
+ }
+ // recurse into children of list item, to see if there are
+ // spaces between any of them:
+ var numsubitems = item.children.length;
+ var j = 0;
+ while (j < numsubitems) {
+ var subitem = item.children[j];
+ var last_subitem = j == numsubitems - 1;
+ if (endsWithBlankLine(subitem) && !(last_item && last_subitem)) {
+ block.tight = false;
+ break;
+ }
+ j++;
+ }
+ i++;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ this.tip = block.parent || this.top;
+};
+
+// Walk through a block & children recursively, parsing string content
+// into inline content where appropriate.
+var processInlines = function(block) {
+ switch(block.t) {
+ case 'Paragraph':
+ case 'SetextHeader':
+ case 'ATXHeader':
+ block.inline_content =
+ this.inlineParser.parse(block.string_content.trim(), this.refmap);
+ block.string_content = "";
+ break;
+ default:
+ break;
+ }
+
+ if (block.children) {
+ for (var i = 0; i < block.children.length; i++) {
+ this.processInlines(block.children[i]);
+ }
+ }
+
+};
+
+// The main parsing function. Returns a parsed document AST.
+var parse = function(input) {
+ this.doc = makeBlock('Document', 1, 1);
+ this.tip = this.doc;
+ this.refmap = {};
+ var lines = input.replace(/\n$/,'').split(/\r\n|\n|\r/);
+ var len = lines.length;
+ for (var i = 0; i < len; i++) {
+ this.incorporateLine(lines[i], i+1);
+ }
+ while (this.tip) {
+ this.finalize(this.tip, len - 1);
+ }
+ this.processInlines(this.doc);
+ return this.doc;
+};
+
+
+// The DocParser object.
+function DocParser(){
+ return {
+ doc: makeBlock('Document', 1, 1),
+ tip: this.doc,
+ refmap: {},
+ inlineParser: new InlineParser(),
+ breakOutOfLists: breakOutOfLists,
+ addLine: addLine,
+ addChild: addChild,
+ incorporateLine: incorporateLine,
+ finalize: finalize,
+ processInlines: processInlines,
+ parse: parse,
+ };
+}
+
+// HTML RENDERER
+
+// Helper function to produce content in a pair of HTML tags.
+var inTags = function(tag, attribs, contents, selfclosing) {
+ var result = '<' + tag;
+ if (attribs) {
+ var i = 0;
+ var attrib;
+ while ((attrib = attribs[i]) !== undefined) {
+ result = result.concat(' ', attrib[0], '="', attrib[1], '"');
+ i++;
+ }
+ }
+ if (contents) {
+ result = result.concat('>', contents, '</', tag, '>');
+ } else if (selfclosing) {
+ result = result + ' />';
+ } else {
+ result = result.concat('></', tag, '>');
+ }
+ return result;
+};
+
+// Render an inline element as HTML.
+var renderInline = function(inline) {
+ var attrs;
+ switch (inline.t) {
+ case 'Str':
+ return this.escape(inline.c);
+ case 'Softbreak':
+ return this.softbreak;
+ case 'Hardbreak':
+ return inTags('br',[],"",true) + '\n';
+ case 'Emph':
+ return inTags('em', [], this.renderInlines(inline.c));
+ case 'Strong':
+ return inTags('strong', [], this.renderInlines(inline.c));
+ case 'Html':
+ return inline.c;
+ case 'Entity':
+ return inline.c;
+ case 'Link':
+ attrs = [['href', this.escape(inline.destination, true)]];
+ if (inline.title) {
+ attrs.push(['title', this.escape(inline.title, true)]);
+ }
+ return inTags('a', attrs, this.renderInlines(inline.label));
+ case 'Image':
+ attrs = [['src', this.escape(inline.destination, true)],
+ ['alt', this.escape(this.renderInlines(inline.label))]];
+ if (inline.title) {
+ attrs.push(['title', this.escape(inline.title, true)]);
+ }
+ return inTags('img', attrs, "", true);
+ case 'Code':
+ return inTags('code', [], this.escape(inline.c));
+ default:
+ console.log("Uknown inline type " + inline.t);
+ return "";
+ }
+};
+
+// Render a list of inlines.
+var renderInlines = function(inlines) {
+ var result = '';
+ for (var i=0; i < inlines.length; i++) {
+ result = result + this.renderInline(inlines[i]);
+ }
+ return result;
+};
+
+// Render a single block element.
+var renderBlock = function(block, in_tight_list) {
+ var tag;
+ var attr;
+ var info_words;
+ switch (block.t) {
+ case 'Document':
+ var whole_doc = this.renderBlocks(block.children);
+ return (whole_doc === '' ? '' : whole_doc + '\n');
+ case 'Paragraph':
+ if (in_tight_list) {
+ return this.renderInlines(block.inline_content);
+ } else {
+ return inTags('p', [], this.renderInlines(block.inline_content));
+ }
+ break;
+ case 'BlockQuote':
+ var filling = this.renderBlocks(block.children);
+ return inTags('blockquote', [], filling === '' ? this.innersep :
+ this.innersep + this.renderBlocks(block.children) + this.innersep);
+ case 'ListItem':
+ return inTags('li', [], this.renderBlocks(block.children, in_tight_list).trim());
+ case 'List':
+ tag = block.list_data.type == 'Bullet' ? 'ul' : 'ol';
+ attr = (!block.list_data.start || block.list_data.start == 1) ?
+ [] : [['start', block.list_data.start.toString()]];
+ return inTags(tag, attr, this.innersep +
+ this.renderBlocks(block.children, block.tight) +
+ this.innersep);
+ case 'ATXHeader':
+ case 'SetextHeader':
+ tag = 'h' + block.level;
+ return inTags(tag, [], this.renderInlines(block.inline_content));
+ case 'IndentedCode':
+ return inTags('pre', [],
+ inTags('code', [], this.escape(block.string_content)));
+ case 'FencedCode':
+ info_words = block.info.split(/ +/);
+ attr = info_words.length === 0 || info_words[0].length === 0 ?
+ [] : [['class',this.escape(info_words[0],true)]];
+ return inTags('pre', attr,
+ inTags('code', [], this.escape(block.string_content)));
+ case 'HtmlBlock':
+ return block.string_content;
+ case 'ReferenceDef':
+ return "";
+ case 'HorizontalRule':
+ return inTags('hr',[],"",true);
+ default:
+ console.log("Uknown block type " + block.t);
+ return "";
+ }
+};
+
+// Render a list of block elements, separated by this.blocksep.
+var renderBlocks = function(blocks, in_tight_list) {
+ var result = [];
+ for (var i=0; i < blocks.length; i++) {
+ if (blocks[i].t !== 'ReferenceDef') {
+ result.push(this.renderBlock(blocks[i], in_tight_list));
+ }
+ }
+ return result.join(this.blocksep);
+};
+
+// The HtmlRenderer object.
+function HtmlRenderer(){
+ return {
+ // default options:
+ blocksep: '\n', // space between blocks
+ innersep: '\n', // space between block container tag and contents
+ softbreak: '\n', // by default, soft breaks are rendered as newlines in HTML
+ // set to "<br />" to make them hard breaks
+ // set to " " if you want to ignore line wrapping in source
+ escape: function(s, preserve_entities) {
+ if (preserve_entities) {
+ return s.replace(/[&](?![#](x[a-f0-9]{1,8}|[0-9]{1,8});|[a-z][a-z0-9]{1,31};)/gi,'&amp;')
+ .replace(/[<]/g,'&lt;')
+ .replace(/[>]/g,'&gt;')
+ .replace(/["]/g,'&quot;');
+ } else {
+ return s.replace(/[&]/g,'&amp;')
+ .replace(/[<]/g,'&lt;')
+ .replace(/[>]/g,'&gt;')
+ .replace(/["]/g,'&quot;');
+ }
+ },
+ renderInline: renderInline,
+ renderInlines: renderInlines,
+ renderBlock: renderBlock,
+ renderBlocks: renderBlocks,
+ render: renderBlock
+ };
+}
+
+exports.DocParser = DocParser;
+exports.HtmlRenderer = HtmlRenderer;
+
+})(typeof exports === 'undefined' ? this.stmd = {} : exports);