jashkenas--coffeescript/lib/coffee-script/helpers.js

// Generated by CoffeeScript 1.6.1
(function() {
  var buildLocationData, extend, flatten, last, normalizePath, repeat, _ref;

  exports.starts = function(string, literal, start) {
    return literal === string.substr(start, literal.length);
  };

  exports.ends = function(string, literal, back) {
    var len;
    len = literal.length;
    return literal === string.substr(string.length - len - (back || 0), len);
  };

  exports.repeat = repeat = function(str, n) {
    var res;
    res = '';
    while (n > 0) {
      if (n & 1) {
        res += str;
      }
      n >>>= 1;
      str += str;
    }
    return res;
  };

  exports.compact = function(array) {
    var item, _i, _len, _results;
    _results = [];
    for (_i = 0, _len = array.length; _i < _len; _i++) {
      item = array[_i];
      if (item) {
        _results.push(item);
      }
    }
    return _results;
  };

  exports.count = function(string, substr) {
    var num, pos;
    num = pos = 0;
    if (!substr.length) {
      return 1 / 0;
    }
    while (pos = 1 + string.indexOf(substr, pos)) {
      num++;
    }
    return num;
  };

  exports.merge = function(options, overrides) {
    return extend(extend({}, options), overrides);
  };

  extend = exports.extend = function(object, properties) {
    var key, val;
    for (key in properties) {
      val = properties[key];
      object[key] = val;
    }
    return object;
  };

  exports.flatten = flatten = function(array) {
    var element, flattened, _i, _len;
    flattened = [];
    for (_i = 0, _len = array.length; _i < _len; _i++) {
      element = array[_i];
      if (element instanceof Array) {
        flattened = flattened.concat(flatten(element));
      } else {
        flattened.push(element);
      }
    }
    return flattened;
  };

  exports.del = function(obj, key) {
    var val;
    val = obj[key];
    delete obj[key];
    return val;
  };

  exports.last = last = function(array, back) {
    return array[array.length - (back || 0) - 1];
  };

  exports.some = (_ref = Array.prototype.some) != null ? _ref : function(fn) {
    var e, _i, _len;
    for (_i = 0, _len = this.length; _i < _len; _i++) {
      e = this[_i];
      if (fn(e)) {
        return true;
      }
    }
    return false;
  };

  exports.invertLiterate = function(code) {
    var line, lines, match;
    lines = (function() {
      var _i, _len, _ref1, _results;
      _ref1 = code.split('\n');
      _results = [];
      for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
        line = _ref1[_i];
        if (match = /^([ ]{4}|\t)/.exec(line)) {
          _results.push(line.slice(match[0].length));
        } else {
          _results.push('# ' + line);
        }
      }
      return _results;
    })();
    return lines.join('\n');
  };

  buildLocationData = function(first, last) {
    if (!last) {
      return first;
    } else {
      return {
        first_line: first.first_line,
        first_column: first.first_column,
        last_line: last.last_line,
        last_column: last.last_column
      };
    }
  };

  exports.addLocationDataFn = function(first, last) {
    return function(obj) {
      if (((typeof obj) === 'object') && (!!obj['updateLocationDataIfMissing'])) {
        obj.updateLocationDataIfMissing(buildLocationData(first, last));
      }
      return obj;
    };
  };

  exports.locationDataToString = function(obj) {
    var locationData;
    if (("2" in obj) && ("first_line" in obj[2])) {
      locationData = obj[2];
    } else if ("first_line" in obj) {
      locationData = obj;
    }
    if (locationData) {
      return ("" + (locationData.first_line + 1) + ":" + (locationData.first_column + 1) + "-") + ("" + (locationData.last_line + 1) + ":" + (locationData.last_column + 1));
    } else {
      return "No location data";
    }
  };

  exports.baseFileName = function(file, stripExt) {
    var parts;
    if (stripExt == null) {
      stripExt = false;
    }
    parts = file.split('/');
    file = parts[parts.length - 1];
    if (!stripExt) {
      return file;
    }
    parts = file.split('.');
    parts.pop();
    if (parts[parts.length - 1] === 'coffee') {
      parts.pop();
    }
    return parts.join('.');
  };

  exports.isCoffee = function(file) {
    return /\.((lit)?coffee|coffee\.md)$/.test(file);
  };

  exports.isLiterate = function(file) {
    return /\.(litcoffee|coffee\.md)$/.test(file);
  };

  exports.normalizePath = normalizePath = function(path, removeTrailingSlash) {
    var i, newParts, part, parts, root, _i, _len;
    if (removeTrailingSlash == null) {
      removeTrailingSlash = false;
    }
    root = false;
    parts = path.split('/');
    newParts = [];
    i = 0;
    if (parts.length > 1 && parts[0] === '') {
      parts.shift();
      root = true;
    }
    for (i = _i = 0, _len = parts.length; _i < _len; i = ++_i) {
      part = parts[i];
      if (part === '.' || part === '') {
        if ((i === parts.length - 1) && !removeTrailingSlash) {
          newParts.push('');
        }
      } else if (part === '..') {
        if (newParts.length === 0 || (newParts.length && last(newParts === '..'))) {
          newParts.push('..');
        } else {
          newParts.pop();
        }
      } else {
        newParts.push(part);
      }
    }
    if (root) {
      if (newParts.length === 0) {
        return '/';
      }
      if (newParts.length[0] === '..') {
        throw new Error("Invalid path: " + path);
      }
      newParts.unshift('');
    }
    return newParts.join('/');
  };

  exports.relativePath = function(from, to, cwd) {
    var answer;
    if (cwd == null) {
      cwd = null;
    }
    if (cwd) {
      from = cwd + "/" + from;
      to = cwd + "/" + to;
    }
    from = (normalizePath(from)).split('/');
    to = (normalizePath(to)).split('/');
    while (from.length > 0 && to.length > 0 && from[0] === to[0]) {
      from.shift();
      to.shift();
    }
    if (from.length && from[0] === "..") {
      throw new Error("'cwd' must be specified if 'from' references parent directory: " + (from.join('/')) + " -> " + (to.join('/')));
    }
    answer = repeat("../", from.length - 1);
    return answer + ("" + (to.join('/')));
  };

}).call(this);