// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE
(function(mod) {
if (typeof exports == "object" && typeof module == "object") // CommonJS
mod(require("../../lib/codemirror"), require("../xml/xml"), require("../meta"));
else if (typeof define == "function" && define.amd) // AMD
define(["../../lib/codemirror", "../xml/xml", "../meta"], mod);
else // Plain browser env
mod(CodeMirror);
})(function(CodeMirror) {
"use strict";
CodeMirror.defineMode("markdown", function(cmCfg, modeCfg) {
var htmlMode = CodeMirror.getMode(cmCfg, "text/html");
var htmlModeMissing = htmlMode.name == "null"
function getMode(name) {
if (CodeMirror.findModeByName) {
var found = CodeMirror.findModeByName(name);
if (found) name = found.mime || found.mimes[0];
}
var mode = CodeMirror.getMode(cmCfg, name);
return mode.name == "null" ? null : mode;
}
// Should characters that affect highlighting be highlighted separate?
// Does not include characters that will be output (such as `1.` and `-` for lists)
if (modeCfg.highlightFormatting === undefined)
modeCfg.highlightFormatting = false;
// Maximum number of nested blockquotes. Set to 0 for infinite nesting.
// Excess `>` will emit `error` token.
if (modeCfg.maxBlockquoteDepth === undefined)
modeCfg.maxBlockquoteDepth = 0;
// Should underscores in words open/close em/strong?
if (modeCfg.underscoresBreakWords === undefined)
modeCfg.underscoresBreakWords = true;
// Use `fencedCodeBlocks` to configure fenced code blocks. false to
// disable, string to specify a precise regexp that the fence should
// match, and true to allow three or more backticks or tildes (as
// per CommonMark).
// Turn on task lists? ("- [ ] " and "- [x] ")
if (modeCfg.taskLists === undefined) modeCfg.taskLists = false;
// Turn on strikethrough syntax
if (modeCfg.strikethrough === undefined)
modeCfg.strikethrough = false;
// Allow token types to be overridden by user-provided token types.
if (modeCfg.tokenTypeOverrides === undefined)
modeCfg.tokenTypeOverrides = {};
var tokenTypes = {
header: "header",
code: "comment",
quote: "quote",
list1: "variable-2",
list2: "variable-3",
list3: "keyword",
hr: "hr",
image: "tag",
formatting: "formatting",
linkInline: "link",
linkEmail: "link",
linkText: "link",
linkHref: "string",
em: "em",
strong: "strong",
strikethrough: "strikethrough"
};
for (var tokenType in tokenTypes) {
if (tokenTypes.hasOwnProperty(tokenType) && modeCfg.tokenTypeOverrides[tokenType]) {
tokenTypes[tokenType] = modeCfg.tokenTypeOverrides[tokenType];
}
}
var hrRE = /^([*\-_])(?:\s*\1){2,}\s*$/
, ulRE = /^[*\-+]\s+/
, olRE = /^[0-9]+([.)])\s+/
, taskListRE = /^\[(x| )\](?=\s)/ // Must follow ulRE or olRE
, atxHeaderRE = modeCfg.allowAtxHeaderWithoutSpace ? /^(#+)/ : /^(#+)(?: |$)/
, setextHeaderRE = /^ *(?:\={1,}|-{1,})\s*$/
, textRE = /^[^#!\[\]*_\\<>` "'(~]+/
, fencedCodeRE = new RegExp("^(" + (modeCfg.fencedCodeBlocks === true ? "~~~+|```+" : modeCfg.fencedCodeBlocks) +
")[ \\t]*([\\w+#]*)");
function switchInline(stream, state, f) {
state.f = state.inline = f;
return f(stream, state);
}
function switchBlock(stream, state, f) {
state.f = state.block = f;
return f(stream, state);
}
function lineIsEmpty(line) {
return !line || !/\S/.test(line.string)
}
// Blocks
function blankLine(state) {
// Reset linkTitle state
state.linkTitle = false;
// Reset EM state
state.em = false;
// Reset STRONG state
state.strong = false;
// Reset strikethrough state
state.strikethrough = false;
// Reset state.quote
state.quote = 0;
// Reset state.indentedCode
state.indentedCode = false;
if (htmlModeMissing && state.f == htmlBlock) {
state.f = inlineNormal;
state.block = blockNormal;
}
// Reset state.trailingSpace
state.trailingSpace = 0;
state.trailingSpaceNewLine = false;
// Mark this line as blank
state.prevLine = state.thisLine
state.thisLine = null
return null;
}
function blockNormal(stream, state) {
var sol = stream.sol();
var prevLineIsList = state.list !== false,
prevLineIsIndentedCode = state.indentedCode;
state.indentedCode = false;
if (prevLineIsList) {
if (state.indentationDiff >= 0) { // Continued list
if (state.indentationDiff < 4) { // Only adjust indentation if *not* a code block
state.indentation -= state.indentationDiff;
}
state.list = null;
} else if (state.indentation > 0) {
state.list = null;
state.listDepth = Math.floor(state.indentation / 4);
} else { // No longer a list
state.list = false;
state.listDepth = 0;
}
}
var match = null;
if (state.indentationDiff >= 4) {
stream.skipToEnd();
if (prevLineIsIndentedCode || lineIsEmpty(state.prevLine)) {
state.indentation -= 4;
state.indentedCode = true;
return tokenTypes.code;
} else {
return null;
}
} else if (stream.eatSpace()) {
return null;
} else if ((match = stream.match(atxHeaderRE)) && match[1].length <= 6) {
state.header = match[1].length;
if (modeCfg.highlightFormatting) state.formatting = "header";
state.f = state.inline;
return getType(state);
} else if (!lineIsEmpty(state.prevLine) && !state.quote && !prevLineIsList &&
!prevLineIsIndentedCode && (match = stream.match(setextHeaderRE))) {
state.header = match[0].charAt(0) == '=' ? 1 : 2;
if (modeCfg.highlightFormatting) state.formatting = "header";
state.f = state.inline;
return getType(state);
} else if (stream.eat('>')) {
state.quote = sol ? 1 : state.quote + 1;
if (modeCfg.highlightFormatting) state.formatting = "quote";
stream.eatSpace();
return getType(state);
} else if (stream.peek() === '[') {
return switchInline(stream, state, footnoteLink);
} else if (stream.match(hrRE, true)) {
state.hr = true;
return tokenTypes.hr;
} else if ((lineIsEmpty(state.prevLine) || prevLineIsList) && (stream.match(ulRE, false) || stream.match(olRE, false))) {
var listType = null;
if (stream.match(ulRE, true)) {
listType = 'ul';
} else {
stream.match(olRE, true);
listType = 'ol';
}
state.indentation = stream.column() + stream.current().length;
state.list = true;
state.listDepth++;
if (modeCfg.taskLists && stream.match(taskListRE, false)) {
state.taskList = true;
}
state.f = state.inline;
if (modeCfg.highlightFormatting) state.formatting = ["list", "list-" + listType];
return getType(state);
} else if (modeCfg.fencedCodeBlocks && (match = stream.match(fencedCodeRE, true))) {
state.fencedChars = match[1]
// try switching mode
state.localMode = getMode(match[2]);
if (state.localMode) state.localState = state.localMode.startState();
state.f = state.block = local;
if (modeCfg.highlightFormatting) state.formatting = "code-block";
state.code = -1
return getType(state);
}
return switchInline(stream, state, state.inline);
}
function htmlBlock(stream, state) {
var style = htmlMode.token(stream, state.htmlState);
if (!htmlModeMissing) {
var inner = CodeMirror.innerMode(htmlMode, state.htmlState)
if ((inner.mode.name == "xml" && inner.state.tagStart === null &&
(!inner.state.context && inner.state.tokenize.isInText)) ||
(state.md_inside && stream.current().indexOf(">") > -1)) {
state.f = inlineNormal;
state.block = blockNormal;
state.htmlState = null;
}
}
return style;
}
function local(stream, state) {
if (state.fencedChars && stream.match(state.fencedChars, false)) {
state.localMode = state.localState = null;
state.f = state.block = leavingLocal;
return null;
} else if (state.localMode) {
return state.localMode.token(stream, state.localState);
} else {
stream.skipToEnd();
return tokenTypes.code;
}
}
function leavingLocal(stream, state) {
stream.match(state.fencedChars);
state.block = blockNormal;
state.f = inlineNormal;
state.fencedChars = null;
if (modeCfg.highlightFormatting) state.formatting = "code-block";
state.code = 1
var returnType = getType(state);
state.code = 0
return returnType;
}
// Inline
function getType(state) {
var styles = [];
if (state.formatting) {
styles.push(tokenTypes.formatting);
if (typeof state.formatting === "string") state.formatting = [state.formatting];
for (var i = 0; i < state.formatting.length; i++) {
styles.push(tokenTypes.formatting + "-" + state.formatting[i]);
if (state.formatting[i] === "header") {
styles.push(tokenTypes.formatting + "-" + state.formatting[i] + "-" + state.header);
}
// Add `formatting-quote` and `formatting-quote-#` for blockquotes
// Add `error` instead if the maximum blockquote nesting depth is passed
if (state.formatting[i] === "quote") {
if (!modeCfg.maxBlockquoteDepth || modeCfg.maxBlockquoteDepth >= state.quote) {
styles.push(tokenTypes.formatting + "-" + state.formatting[i] + "-" + state.quote);
} else {
styles.push("error");
}
}
}
}
if (state.taskOpen) {
styles.push("meta");
return styles.length ? styles.join(' ') : null;
}
if (state.taskClosed) {
styles.push("property");
return styles.length ? styles.join(' ') : null;
}
if (state.linkHref) {
styles.push(tokenTypes.linkHref, "url");
} else { // Only apply inline styles to non-url text
if (state.strong) { styles.push(tokenTypes.strong); }
if (state.em) { styles.push(tokenTypes.em); }
if (state.strikethrough) { styles.push(tokenTypes.strikethrough); }
if (state.linkText) { styles.push(tokenTypes.linkText); }
if (state.code) { styles.push(tokenTypes.code); }
}
if (state.header) { styles.push(tokenTypes.header, tokenTypes.header + "-" + state.header); }
if (state.quote) {
styles.push(tokenTypes.quote);
// Add `quote-#` where the maximum for `#` is modeCfg.maxBlockquoteDepth
if (!modeCfg.maxBlockquoteDepth || modeCfg.maxBlockquoteDepth >= state.quote) {
styles.push(tokenTypes.quote + "-" + state.quote);
} else {
styles.push(tokenTypes.quote + "-" + modeCfg.maxBlockquoteDepth);
}
}
if (state.list !== false) {
var listMod = (state.listDepth - 1) % 3;
if (!listMod) {
styles.push(tokenTypes.list1);
} else if (listMod === 1) {
styles.push(tokenTypes.list2);
} else {
styles.push(tokenTypes.list3);
}
}
if (state.trailingSpaceNewLine) {
styles.push("trailing-space-new-line");
} else if (state.trailingSpace) {
styles.push("trailing-space-" + (state.trailingSpace % 2 ? "a" : "b"));
}
return styles.length ? styles.join(' ') : null;
}
function handleText(stream, state) {
if (stream.match(textRE, true)) {
return getType(state);
}
return undefined;
}
function inlineNormal(stream, state) {
var style = state.text(stream, state);
if (typeof style !== 'undefined')
return style;
if (state.list) { // List marker (*, +, -, 1., etc)
state.list = null;
return getType(state);
}
if (state.taskList) {
var taskOpen = stream.match(taskListRE, true)[1] !== "x";
if (taskOpen) state.taskOpen = true;
else state.taskClosed = true;
if (modeCfg.highlightFormatting) state.formatting = "task";
state.taskList = false;
return getType(state);
}
state.taskOpen = false;
state.taskClosed = false;
if (state.header && stream.match(/^#+$/, true)) {
if (modeCfg.highlightFormatting) state.formatting = "header";
return getType(state);
}
// Get sol() value now, before character is consumed
var sol = stream.sol();
var ch = stream.next();
// Matches link titles present on next line
if (state.linkTitle) {
state.linkTitle = false;
var matchCh = ch;
if (ch === '(') {
matchCh = ')';
}
matchCh = (matchCh+'').replace(/([.?*+^$[\]\\(){}|-])/g, "\\$1");
var regex = '^\\s*(?:[^' + matchCh + '\\\\]+|\\\\\\\\|\\\\.)' + matchCh;
if (stream.match(new RegExp(regex), true)) {
return tokenTypes.linkHref;
}
}
// If this block is changed, it may need to be updated in GFM mode
if (ch === '`') {
var previousFormatting = state.formatting;
if (modeCfg.highlightFormatting) state.formatting = "code";
stream.eatWhile('`');
var count = stream.current().length
if (state.code == 0) {
state.code = count
return getType(state)
} else if (count == state.code) { // Must be exact
var t = getType(state)
state.code = 0
return t
} else {
state.formatting = previousFormatting
return getType(state)
}
} else if (state.code) {
return getType(state);
}
if (ch === '\\') {
stream.next();
if (modeCfg.highlightFormatting) {
var type = getType(state);
var formattingEscape = tokenTypes.formatting + "-escape";
return type ? type + " " + formattingEscape : formattingEscape;
}
}
if (ch === '!' && stream.match(/\[[^\]]*\] ?(?:\(|\[)/, false)) {
stream.match(/\[[^\]]*\]/);
state.inline = state.f = linkHref;
return tokenTypes.image;
}
if (ch === '[' && stream.match(/.*\](\(.*\)| ?\[.*\])/, false)) {
state.linkText = true;
if (modeCfg.highlightFormatting) state.formatting = "link";
return getType(state);
}
if (ch === ']' && state.linkText && stream.match(/\(.*\)| ?\[.*\]/, false)) {
if (modeCfg.highlightFormatting) state.formatting = "link";
var type = getType(state);
state.linkText = false;
state.inline = state.f = linkHref;
return type;
}
if (ch === '<' && stream.match(/^(https?|ftps?):\/\/(?:[^\\>]|\\.)+>/, false)) {
state.f = state.inline = linkInline;
if (modeCfg.highlightFormatting) state.formatting = "link";
var type = getType(state);
if (type){
type += " ";
} else {
type = "";
}
return type + tokenTypes.linkInline;
}
if (ch === '<' && stream.match(/^[^> \\]+@(?:[^\\>]|\\.)+>/, false)) {
state.f = state.inline = linkInline;
if (modeCfg.highlightFormatting) state.formatting = "link";
var type = getType(state);
if (type){
type += " ";
} else {
type = "";
}
return type + tokenTypes.linkEmail;
}
if (ch === '<' && stream.match(/^(!--|\w)/, false)) {
var end = stream.string.indexOf(">", stream.pos);
if (end != -1) {
var atts = stream.string.substring(stream.start, end);
if (/markdown\s*=\s*('|"){0,1}1('|"){0,1}/.test(atts)) state.md_inside = true;
}
stream.backUp(1);
state.htmlState = CodeMirror.startState(htmlMode);
return switchBlock(stream, state, htmlBlock);
}
if (ch === '<' && stream.match(/^\/\w*?>/)) {
state.md_inside = false;
return "tag";
}
var ignoreUnderscore = false;
if (!modeCfg.underscoresBreakWords) {
if (ch === '_' && stream.peek() !== '_' && stream.match(/(\w)/, false)) {
var prevPos = stream.pos - 2;
if (prevPos >= 0) {
var prevCh = stream.string.charAt(prevPos);
if (prevCh !== '_' && prevCh.match(/(\w)/, false)) {
ignoreUnderscore = true;
}
}
}
}
if (ch === '*' || (ch === '_' && !ignoreUnderscore)) {
if (sol && stream.peek() === ' ') {
// Do nothing, surrounded by newline and space
} else if (state.strong === ch && stream.eat(ch)) { // Remove STRONG
if (modeCfg.highlightFormatting) state.formatting = "strong";
var t = getType(state);
state.strong = false;
return t;
} else if (!state.strong && stream.eat(ch)) { // Add STRONG
state.strong = ch;
if (modeCfg.highlightFormatting) state.formatting = "strong";
return getType(state);
} else if (state.em === ch) { // Remove EM
if (modeCfg.highlightFormatting) state.formatting = "em";
var t = getType(state);
state.em = false;
return t;
} else if (!state.em) { // Add EM
state.em = ch;
if (modeCfg.highlightFormatting) state.formatting = "em";
return getType(state);
}
} else if (ch === ' ') {
if (stream.eat('*') || stream.eat('_')) { // Probably surrounded by spaces
if (stream.peek() === ' ') { // Surrounded by spaces, ignore
return getType(state);
} else { // Not surrounded by spaces, back up pointer
stream.backUp(1);
}
}
}
if (modeCfg.strikethrough) {
if (ch === '~' && stream.eatWhile(ch)) {
if (state.strikethrough) {// Remove strikethrough
if (modeCfg.highlightFormatting) state.formatting = "strikethrough";
var t = getType(state);
state.strikethrough = false;
return t;
} else if (stream.match(/^[^\s]/, false)) {// Add strikethrough
state.strikethrough = true;
if (modeCfg.highlightFormatting) state.formatting = "strikethrough";
return getType(state);
}
} else if (ch === ' ') {
if (stream.match(/^~~/, true)) { // Probably surrounded by space
if (stream.peek() === ' ') { // Surrounded by spaces, ignore
return getType(state);
} else { // Not surrounded by spaces, back up pointer
stream.backUp(2);
}
}
}
}
if (ch === ' ') {
if (stream.match(/ +$/, false)) {
state.trailingSpace++;
} else if (state.trailingSpace) {
state.trailingSpaceNewLine = true;
}
}
return getType(state);
}
function linkInline(stream, state) {
var ch = stream.next();
if (ch === ">") {
state.f = state.inline = inlineNormal;
if (modeCfg.highlightFormatting) state.formatting = "link";
var type = getType(state);
if (type){
type += " ";
} else {
type = "";
}
return type + tokenTypes.linkInline;
}
stream.match(/^[^>]+/, true);
return tokenTypes.linkInline;
}
function linkHref(stream, state) {
// Check if space, and return NULL if so (to avoid marking the space)
if(stream.eatSpace()){
return null;
}
var ch = stream.next();
if (ch === '(' || ch === '[') {
state.f = state.inline = getLinkHrefInside(ch === "(" ? ")" : "]");
if (modeCfg.highlightFormatting) state.formatting = "link-string";
state.linkHref = true;
return getType(state);
}
return 'error';
}
function getLinkHrefInside(endChar) {
return function(stream, state) {
var ch = stream.next();
if (ch === endChar) {
state.f = state.inline = inlineNormal;
if (modeCfg.highlightFormatting) state.formatting = "link-string";
var returnState = getType(state);
state.linkHref = false;
return returnState;
}
if (stream.match(inlineRE(endChar), true)) {
stream.backUp(1);
}
state.linkHref = true;
return getType(state);
};
}
function footnoteLink(stream, state) {
if (stream.match(/^([^\]\\]|\\.)*\]:/, false)) {
state.f = footnoteLinkInside;
stream.next(); // Consume [
if (modeCfg.highlightFormatting) state.formatting = "link";
state.linkText = true;
return getType(state);
}
return switchInline(stream, state, inlineNormal);
}
function footnoteLinkInside(stream, state) {
if (stream.match(/^\]:/, true)) {
state.f = state.inline = footnoteUrl;
if (modeCfg.highlightFormatting) state.formatting = "link";
var returnType = getType(state);
state.linkText = false;
return returnType;
}
stream.match(/^([^\]\\]|\\.)+/, true);
return tokenTypes.linkText;
}
function footnoteUrl(stream, state) {
// Check if space, and return NULL if so (to avoid marking the space)
if(stream.eatSpace()){
return null;
}
// Match URL
stream.match(/^[^\s]+/, true);
// Check for link title
if (stream.peek() === undefined) { // End of line, set flag to check next line
state.linkTitle = true;
} else { // More content on line, check if link title
stream.match(/^(?:\s+(?:"(?:[^"\\]|\\\\|\\.)+"|'(?:[^'\\]|\\\\|\\.)+'|\((?:[^)\\]|\\\\|\\.)+\)))?/, true);
}
state.f = state.inline = inlineNormal;
return tokenTypes.linkHref + " url";
}
var savedInlineRE = [];
function inlineRE(endChar) {
if (!savedInlineRE[endChar]) {
// Escape endChar for RegExp (taken from http://stackoverflow.com/a/494122/526741)
endChar = (endChar+'').replace(/([.?*+^$[\]\\(){}|-])/g, "\\$1");
// Match any non-endChar, escaped character, as well as the closing
// endChar.
savedInlineRE[endChar] = new RegExp('^(?:[^\\\\]|\\\\.)*?(' + endChar + ')');
}
return savedInlineRE[endChar];
}
var mode = {
startState: function() {
return {
f: blockNormal,
prevLine: null,
thisLine: null,
block: blockNormal,
htmlState: null,
indentation: 0,
inline: inlineNormal,
text: handleText,
formatting: false,
linkText: false,
linkHref: false,
linkTitle: false,
code: 0,
em: false,
strong: false,
header: 0,
hr: false,
taskList: false,
list: false,
listDepth: 0,
quote: 0,
trailingSpace: 0,
trailingSpaceNewLine: false,
strikethrough: false,
fencedChars: null
};
},
copyState: function(s) {
return {
f: s.f,
prevLine: s.prevLine,
thisLine: s.thisLine,
block: s.block,
htmlState: s.htmlState && CodeMirror.copyState(htmlMode, s.htmlState),
indentation: s.indentation,
localMode: s.localMode,
localState: s.localMode ? CodeMirror.copyState(s.localMode, s.localState) : null,
inline: s.inline,
text: s.text,
formatting: false,
linkTitle: s.linkTitle,
code: s.code,
em: s.em,
strong: s.strong,
strikethrough: s.strikethrough,
header: s.header,
hr: s.hr,
taskList: s.taskList,
list: s.list,
listDepth: s.listDepth,
quote: s.quote,
indentedCode: s.indentedCode,
trailingSpace: s.trailingSpace,
trailingSpaceNewLine: s.trailingSpaceNewLine,
md_inside: s.md_inside,
fencedChars: s.fencedChars
};
},
token: function(stream, state) {
// Reset state.formatting
state.formatting = false;
if (stream != state.thisLine) {
var forceBlankLine = state.header || state.hr;
// Reset state.header and state.hr
state.header = 0;
state.hr = false;
if (stream.match(/^\s*$/, true) || forceBlankLine) {
blankLine(state);
if (!forceBlankLine) return null
state.prevLine = null
}
state.prevLine = state.thisLine
state.thisLine = stream
// Reset state.taskList
state.taskList = false;
// Reset state.trailingSpace
state.trailingSpace = 0;
state.trailingSpaceNewLine = false;
state.f = state.block;
var indentation = stream.match(/^\s*/, true)[0].replace(/\t/g, ' ').length;
var difference = Math.floor((indentation - state.indentation) / 4) * 4;
if (difference > 4) difference = 4;
var adjustedIndentation = state.indentation + difference;
state.indentationDiff = adjustedIndentation - state.indentation;
state.indentation = adjustedIndentation;
if (indentation > 0) return null;
}
return state.f(stream, state);
},
innerMode: function(state) {
if (state.block == htmlBlock) return {state: state.htmlState, mode: htmlMode};
if (state.localState) return {state: state.localState, mode: state.localMode};
return {state: state, mode: mode};
},
blankLine: blankLine,
getType: getType,
fold: "markdown"
};
return mode;
}, "xml");
CodeMirror.defineMIME("text/x-markdown", "markdown");
});
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