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backend/makest/js/plugins/codemirror/mode/gfm/gfm.js 3.76 KB
d1f8bd40   Alexey Boroda   first commit
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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
    };
    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");
  
  });