gfm.js
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// 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("../markdown/markdown"), require("../../addon/mode/overlay"));
else if (typeof define == "function" && define.amd) // AMD
define(["../../lib/codemirror", "../markdown/markdown", "../../addon/mode/overlay"], mod);
else // Plain browser env
mod(CodeMirror);
})(function(CodeMirror) {
"use strict";
CodeMirror.defineMode("gfm", function(config, modeConfig) {
var codeDepth = 0;
function blankLine(state) {
state.code = false;
return null;
}
var gfmOverlay = {
startState: function() {
return {
code: false,
codeBlock: false,
ateSpace: false
};
},
copyState: function(s) {
return {
code: s.code,
codeBlock: s.codeBlock,
ateSpace: s.ateSpace
};
},
token: function(stream, state) {
state.combineTokens = null;
// Hack to prevent formatting override inside code blocks (block and inline)
if (state.codeBlock) {
if (stream.match(/^```/)) {
state.codeBlock = false;
return null;
}
stream.skipToEnd();
return null;
}
if (stream.sol()) {
state.code = false;
}
if (stream.sol() && stream.match(/^```/)) {
stream.skipToEnd();
state.codeBlock = true;
return null;
}
// If this block is changed, it may need to be updated in Markdown mode
if (stream.peek() === '`') {
stream.next();
var before = stream.pos;
stream.eatWhile('`');
var difference = 1 + stream.pos - before;
if (!state.code) {
codeDepth = difference;
state.code = true;
} else {
if (difference === codeDepth) { // Must be exact
state.code = false;
}
}
return null;
} else if (state.code) {
stream.next();
return null;
}
// Check if space. If so, links can be formatted later on
if (stream.eatSpace()) {
state.ateSpace = true;
return null;
}
if (stream.sol() || state.ateSpace) {
state.ateSpace = false;
if(stream.match(/^(?:[a-zA-Z0-9\-_]+\/)?(?:[a-zA-Z0-9\-_]+@)?(?:[a-f0-9]{7,40}\b)/)) {
// User/Project@SHA
// User@SHA
// SHA
state.combineTokens = true;
return "link";
} else if (stream.match(/^(?:[a-zA-Z0-9\-_]+\/)?(?:[a-zA-Z0-9\-_]+)?#[0-9]+\b/)) {
// User/Project#Num
// User#Num
// #Num
state.combineTokens = true;
return "link";
}
}
if (stream.match(/^((?:[a-z][\w-]+:(?:\/{1,3}|[a-z0-9%])|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}\/)(?:[^\s()<>]|\([^\s()<>]*\))+(?:\([^\s()<>]*\)|[^\s`*!()\[\]{};:'".,<>?«»“”‘’]))/i) &&
stream.string.slice(stream.start - 2, stream.start) != "](") {
// URLs
// Taken from http://daringfireball.net/2010/07/improved_regex_for_matching_urls
// And then (issue #1160) simplified to make it not crash the Chrome Regexp engine
state.combineTokens = true;
return "link";
}
stream.next();
return null;
},
blankLine: blankLine
};
var markdownConfig = {
underscoresBreakWords: false,
taskLists: true,
fencedCodeBlocks: true,
strikethrough: true
};
for (var attr in modeConfig) {
markdownConfig[attr] = modeConfig[attr];
}
markdownConfig.name = "markdown";
CodeMirror.defineMIME("gfmBase", markdownConfig);
return CodeMirror.overlayMode(CodeMirror.getMode(config, "gfmBase"), gfmOverlay);
}, "markdown");
});