log.js

(function() {
  var exportedLog, ffSupport, formats, getOrderedMatches, hasMatches, isFF, isIE, isOpera, isSafari, log, makeArray, operaSupport, safariSupport, stringToArgs, _log;

  if (!(window.console && window.console.log)) {
    return;
  }

  log = function() {
    var args;
    args = [];
    makeArray(arguments).forEach(function(arg) {
      if (typeof arg === 'string') {
        return args = args.concat(stringToArgs(arg));
      } else {
        return args.push(arg);
      }
    });
    return _log.apply(window, args);
  };

  _log = function() {
    return Function.prototype.apply.call(console.log, console, makeArray(arguments));
  };

  makeArray = function(arrayLikeThing) {
    return Array.prototype.slice.call(arrayLikeThing);
  };

  formats = [
    {
      regex: /\*([^\*]+)\*/,
      replacer: function(m, p1) {
        return "%c" + p1 + "%c";
      },
      styles: function() {
        return ['font-style: italic', ''];
      }
    }, {
      regex: /\_([^\_]+)\_/,
      replacer: function(m, p1) {
        return "%c" + p1 + "%c";
      },
      styles: function() {
        return ['font-weight: bold', ''];
      }
    }, {
      regex: /\`([^\`]+)\`/,
      replacer: function(m, p1) {
        return "%c" + p1 + "%c";
      },
      styles: function() {
        return ['background: rgb(255, 255, 219); padding: 1px 5px; border: 1px solid rgba(0, 0, 0, 0.1)', ''];
      }
    }, {
      regex: /\[c\=(?:\"|\')?((?:(?!(?:\"|\')\]).)*)(?:\"|\')?\]((?:(?!\[c\]).)*)\[c\]/,
      replacer: function(m, p1, p2) {
        return "%c" + p2 + "%c";
      },
      styles: function(match) {
        return [match[1], ''];
      }
    }
  ];

  hasMatches = function(str) {
    var _hasMatches;
    _hasMatches = false;
    formats.forEach(function(format) {
      if (format.regex.test(str)) {
        return _hasMatches = true;
      }
    });
    return _hasMatches;
  };

  getOrderedMatches = function(str) {
    var matches;
    matches = [];
    formats.forEach(function(format) {
      var match;
      match = str.match(format.regex);
      if (match) {
        return matches.push({
          format: format,
          match: match
        });
      }
    });
    return matches.sort(function(a, b) {
      return a.match.index - b.match.index;
    });
  };

  stringToArgs = function(str) {
    var firstMatch, matches, styles;
    styles = [];
    while (hasMatches(str)) {
      matches = getOrderedMatches(str);
      firstMatch = matches[0];
      str = str.replace(firstMatch.format.regex, firstMatch.format.replacer);
      styles = styles.concat(firstMatch.format.styles(firstMatch.match));
    }
    return [str].concat(styles);
  };

  isSafari = function() {
    return /Safari/.test(navigator.userAgent) && /Apple Computer/.test(navigator.vendor);
  };

  isOpera = function() {
    return /OPR/.test(navigator.userAgent) && /Opera/.test(navigator.vendor);
  };

  isFF = function() {
    return /Firefox/.test(navigator.userAgent);
  };

  isIE = function() {
    return /MSIE/.test(navigator.userAgent);
  };

  safariSupport = function() {
    var m;
    m = navigator.userAgent.match(/AppleWebKit\/(\d+)\.(\d+)(\.|\+|\s)/);
    if (!m) {
      return false;
    }
    return 537.38 <= parseInt(m[1], 10) + (parseInt(m[2], 10) / 100);
  };

  operaSupport = function() {
    var m;
    m = navigator.userAgent.match(/OPR\/(\d+)\./);
    if (!m) {
      return false;
    }
    return 15 <= parseInt(m[1], 10);
  };

  ffSupport = function() {
    return window.console.firebug || window.console.exception;
  };

  if (isIE() || (isFF() && !ffSupport()) || (isOpera() && !operaSupport()) || (isSafari() && !safariSupport())) {
    exportedLog = _log;
  } else {
    exportedLog = log;
  }

  exportedLog.l = _log;

  if (typeof define === 'function' && define.amd) {
    define(function() {
      return exportedLog;
    });
  } else if (typeof exports !== 'undefined') {
    module.exports = exportedLog;
  } else {
    window.log = exportedLog;
  }

}).call(this);