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   1  // CodeMirror, copyright (c) by Marijn Haverbeke and others
   2  // Distributed under an MIT license: https://codemirror.net/5/LICENSE
   3  
   4  (function(mod) {
   5    if (typeof exports == "object" && typeof module == "object") // CommonJS
   6      mod(require("../../lib/codemirror"), require("../markdown/markdown"), require("../../addon/mode/overlay"));
   7    else if (typeof define == "function" && define.amd) // AMD
   8      define(["../../lib/codemirror", "../markdown/markdown", "../../addon/mode/overlay"], mod);
   9    else // Plain browser env
  10      mod(CodeMirror);
  11  })(function(CodeMirror) {
  12  "use strict";
  13  
  14  var urlRE = /^((?:(?:aaas?|about|acap|adiumxtra|af[ps]|aim|apt|attachment|aw|beshare|bitcoin|bolo|callto|cap|chrome(?:-extension)?|cid|coap|com-eventbrite-attendee|content|crid|cvs|data|dav|dict|dlna-(?:playcontainer|playsingle)|dns|doi|dtn|dvb|ed2k|facetime|feed|file|finger|fish|ftp|geo|gg|git|gizmoproject|go|gopher|gtalk|h323|hcp|https?|iax|icap|icon|im|imap|info|ipn|ipp|irc[6s]?|iris(?:\.beep|\.lwz|\.xpc|\.xpcs)?|itms|jar|javascript|jms|keyparc|lastfm|ldaps?|magnet|mailto|maps|market|message|mid|mms|ms-help|msnim|msrps?|mtqp|mumble|mupdate|mvn|news|nfs|nih?|nntp|notes|oid|opaquelocktoken|palm|paparazzi|platform|pop|pres|proxy|psyc|query|res(?:ource)?|rmi|rsync|rtmp|rtsp|secondlife|service|session|sftp|sgn|shttp|sieve|sips?|skype|sm[bs]|snmp|soap\.beeps?|soldat|spotify|ssh|steam|svn|tag|teamspeak|tel(?:net)?|tftp|things|thismessage|tip|tn3270|tv|udp|unreal|urn|ut2004|vemmi|ventrilo|view-source|webcal|wss?|wtai|wyciwyg|xcon(?:-userid)?|xfire|xmlrpc\.beeps?|xmpp|xri|ymsgr|z39\.50[rs]?):(?:\/{1,3}|[a-z0-9%])|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}\/)(?:[^\s()<>]|\([^\s()<>]*\))+(?:\([^\s()<>]*\)|[^\s`*!()\[\]{};:'".,<>?«»“”‘’]))/i
  15  
  16  CodeMirror.defineMode("gfm", function(config, modeConfig) {
  17    var codeDepth = 0;
  18    function blankLine(state) {
  19      state.code = false;
  20      return null;
  21    }
  22    var gfmOverlay = {
  23      startState: function() {
  24        return {
  25          code: false,
  26          codeBlock: false,
  27          ateSpace: false
  28        };
  29      },
  30      copyState: function(s) {
  31        return {
  32          code: s.code,
  33          codeBlock: s.codeBlock,
  34          ateSpace: s.ateSpace
  35        };
  36      },
  37      token: function(stream, state) {
  38        state.combineTokens = null;
  39  
  40        // Hack to prevent formatting override inside code blocks (block and inline)
  41        if (state.codeBlock) {
  42          if (stream.match(/^```+/)) {
  43            state.codeBlock = false;
  44            return null;
  45          }
  46          stream.skipToEnd();
  47          return null;
  48        }
  49        if (stream.sol()) {
  50          state.code = false;
  51        }
  52        if (stream.sol() && stream.match(/^```+/)) {
  53          stream.skipToEnd();
  54          state.codeBlock = true;
  55          return null;
  56        }
  57        // If this block is changed, it may need to be updated in Markdown mode
  58        if (stream.peek() === '`') {
  59          stream.next();
  60          var before = stream.pos;
  61          stream.eatWhile('`');
  62          var difference = 1 + stream.pos - before;
  63          if (!state.code) {
  64            codeDepth = difference;
  65            state.code = true;
  66          } else {
  67            if (difference === codeDepth) { // Must be exact
  68              state.code = false;
  69            }
  70          }
  71          return null;
  72        } else if (state.code) {
  73          stream.next();
  74          return null;
  75        }
  76        // Check if space. If so, links can be formatted later on
  77        if (stream.eatSpace()) {
  78          state.ateSpace = true;
  79          return null;
  80        }
  81        if (stream.sol() || state.ateSpace) {
  82          state.ateSpace = false;
  83          if (modeConfig.gitHubSpice !== false) {
  84            if(stream.match(/^(?:[a-zA-Z0-9\-_]+\/)?(?:[a-zA-Z0-9\-_]+@)?(?=.{0,6}\d)(?:[a-f0-9]{7,40}\b)/)) {
  85              // User/Project@SHA
  86              // User@SHA
  87              // SHA
  88              state.combineTokens = true;
  89              return "link";
  90            } else if (stream.match(/^(?:[a-zA-Z0-9\-_]+\/)?(?:[a-zA-Z0-9\-_]+)?#[0-9]+\b/)) {
  91              // User/Project#Num
  92              // User#Num
  93              // #Num
  94              state.combineTokens = true;
  95              return "link";
  96            }
  97          }
  98        }
  99        if (stream.match(urlRE) &&
 100            stream.string.slice(stream.start - 2, stream.start) != "](" &&
 101            (stream.start == 0 || /\W/.test(stream.string.charAt(stream.start - 1)))) {
 102          // URLs
 103          // Taken from http://daringfireball.net/2010/07/improved_regex_for_matching_urls
 104          // And then (issue #1160) simplified to make it not crash the Chrome Regexp engine
 105          // And then limited url schemes to the CommonMark list, so foo:bar isn't matched as a URL
 106          state.combineTokens = true;
 107          return "link";
 108        }
 109        stream.next();
 110        return null;
 111      },
 112      blankLine: blankLine
 113    };
 114  
 115    var markdownConfig = {
 116      taskLists: true,
 117      strikethrough: true,
 118      emoji: true
 119    };
 120    for (var attr in modeConfig) {
 121      markdownConfig[attr] = modeConfig[attr];
 122    }
 123    markdownConfig.name = "markdown";
 124    return CodeMirror.overlayMode(CodeMirror.getMode(config, markdownConfig), gfmOverlay);
 125  
 126  }, "markdown");
 127  
 128    CodeMirror.defineMIME("text/x-gfm", "gfm");
 129  });