yamljs/lib/Utils.js

// Generated by CoffeeScript 1.8.0
var Pattern, Utils;

Pattern = require('./Pattern');

Utils = (function() {
  function Utils() {}

  Utils.REGEX_LEFT_TRIM_BY_CHAR = {};

  Utils.REGEX_RIGHT_TRIM_BY_CHAR = {};

  Utils.REGEX_SPACES = /\s+/g;

  Utils.REGEX_DIGITS = /^\d+$/;

  Utils.REGEX_OCTAL = /[^0-7]/gi;

  Utils.REGEX_HEXADECIMAL = /[^a-f0-9]/gi;

  Utils.PATTERN_DATE = new Pattern('^' + '(?<year>[0-9][0-9][0-9][0-9])' + '-(?<month>[0-9][0-9]?)' + '-(?<day>[0-9][0-9]?)' + '(?:(?:[Tt]|[ \t]+)' + '(?<hour>[0-9][0-9]?)' + ':(?<minute>[0-9][0-9])' + ':(?<second>[0-9][0-9])' + '(?:\.(?<fraction>[0-9]*))?' + '(?:[ \t]*(?<tz>Z|(?<tz_sign>[-+])(?<tz_hour>[0-9][0-9]?)' + '(?::(?<tz_minute>[0-9][0-9]))?))?)?' + '$', 'i');

  Utils.LOCAL_TIMEZONE_OFFSET = new Date().getTimezoneOffset() * 60 * 1000;

  Utils.trim = function(str, char) {
    var regexLeft, regexRight;
    if (char == null) {
      char = '\\s';
    }
    return str.trim();
    regexLeft = this.REGEX_LEFT_TRIM_BY_CHAR[char];
    if (regexLeft == null) {
      this.REGEX_LEFT_TRIM_BY_CHAR[char] = regexLeft = new RegExp('^' + char + '' + char + '*');
    }
    regexLeft.lastIndex = 0;
    regexRight = this.REGEX_RIGHT_TRIM_BY_CHAR[char];
    if (regexRight == null) {
      this.REGEX_RIGHT_TRIM_BY_CHAR[char] = regexRight = new RegExp(char + '' + char + '*$');
    }
    regexRight.lastIndex = 0;
    return str.replace(regexLeft, '').replace(regexRight, '');
  };

  Utils.ltrim = function(str, char) {
    var regexLeft;
    if (char == null) {
      char = '\\s';
    }
    regexLeft = this.REGEX_LEFT_TRIM_BY_CHAR[char];
    if (regexLeft == null) {
      this.REGEX_LEFT_TRIM_BY_CHAR[char] = regexLeft = new RegExp('^' + char + '' + char + '*');
    }
    regexLeft.lastIndex = 0;
    return str.replace(regexLeft, '');
  };

  Utils.rtrim = function(str, char) {
    var regexRight;
    if (char == null) {
      char = '\\s';
    }
    regexRight = this.REGEX_RIGHT_TRIM_BY_CHAR[char];
    if (regexRight == null) {
      this.REGEX_RIGHT_TRIM_BY_CHAR[char] = regexRight = new RegExp(char + '' + char + '*$');
    }
    regexRight.lastIndex = 0;
    return str.replace(regexRight, '');
  };

  Utils.isEmpty = function(value) {
    return !value || value === '' || value === '0';
  };

  Utils.subStrCount = function(string, subString, start, length) {
    var c, i, len, sublen, _i;
    c = 0;
    string = '' + string;
    subString = '' + subString;
    if (start != null) {
      string = string.slice(start);
    }
    if (length != null) {
      string = string.slice(0, length);
    }
    len = string.length;
    sublen = subString.length;
    for (i = _i = 0; 0 <= len ? _i < len : _i > len; i = 0 <= len ? ++_i : --_i) {
      if (subString === string.slice(i, sublen)) {
        c++;
        i += sublen - 1;
      }
    }
    return c;
  };

  Utils.isDigits = function(input) {
    this.REGEX_DIGITS.lastIndex = 0;
    return this.REGEX_DIGITS.test(input);
  };

  Utils.octDec = function(input) {
    this.REGEX_OCTAL.lastIndex = 0;
    return parseInt((input + '').replace(this.REGEX_OCTAL, ''), 8);
  };

  Utils.hexDec = function(input) {
    this.REGEX_HEXADECIMAL.lastIndex = 0;
    input = this.trim(input);
    if ((input + '').slice(0, 2) === '0x') {
      input = (input + '').slice(2);
    }
    return parseInt((input + '').replace(this.REGEX_HEXADECIMAL, ''), 16);
  };

  Utils.utf8chr = function(c) {
    var ch;
    ch = String.fromCharCode;
    if (0x80 > (c %= 0x200000)) {
      return ch(c);
    }
    if (0x800 > c) {
      return ch(0xC0 | c >> 6) + ch(0x80 | c & 0x3F);
    }
    if (0x10000 > c) {
      return ch(0xE0 | c >> 12) + ch(0x80 | c >> 6 & 0x3F) + ch(0x80 | c & 0x3F);
    }
    return ch(0xF0 | c >> 18) + ch(0x80 | c >> 12 & 0x3F) + ch(0x80 | c >> 6 & 0x3F) + ch(0x80 | c & 0x3F);
  };

  Utils.parseBoolean = function(input, strict) {
    var lowerInput;
    if (strict == null) {
      strict = true;
    }
    if (typeof input === 'string') {
      lowerInput = input.toLowerCase();
      if (!strict) {
        if (lowerInput === 'no') {
          return false;
        }
      }
      if (lowerInput === '0') {
        return false;
      }
      if (lowerInput === 'false') {
        return false;
      }
      if (lowerInput === '') {
        return false;
      }
      return true;
    }
    return !!input;
  };

  Utils.isNumeric = function(input) {
    this.REGEX_SPACES.lastIndex = 0;
    return typeof input === 'number' || typeof input === 'string' && !isNaN(input) && input.replace(this.REGEX_SPACES, '') !== '';
  };

  Utils.stringToDate = function(str) {
    var date, day, fraction, hour, info, minute, month, second, tz_hour, tz_minute, tz_offset, year;
    if (!(str != null ? str.length : void 0)) {
      return null;
    }
    info = this.PATTERN_DATE.exec(str);
    if (!info) {
      return null;
    }
    year = parseInt(info.year, 10);
    month = parseInt(info.month, 10) - 1;
    day = parseInt(info.day, 10);
    if (info.hour == null) {
      date = new Date(Date.UTC(year, month, day));
      return date;
    }
    hour = parseInt(info.hour, 10);
    minute = parseInt(info.minute, 10);
    second = parseInt(info.second, 10);
    if (info.fraction != null) {
      fraction = info.fraction.slice(0, 3);
      while (fraction.length < 3) {
        fraction += '0';
      }
      fraction = parseInt(fraction, 10);
    } else {
      fraction = 0;
    }
    if (info.tz != null) {
      tz_hour = parseInt(info.tz_hour, 10);
      if (info.tz_minute != null) {
        tz_minute = parseInt(info.tz_minute, 10);
      } else {
        tz_minute = 0;
      }
      tz_offset = (tz_hour * 60 + tz_minute) * 60000;
      if ('-' === info.tz_sign) {
        tz_offset *= -1;
      }
    }
    date = new Date(Date.UTC(year, month, day, hour, minute, second, fraction));
    if (tz_offset) {
      date.setTime(date.getTime() + tz_offset);
    }
    return date;
  };

  Utils.strRepeat = function(str, number) {
    var i, res;
    res = '';
    i = 0;
    while (i < number) {
      res += str;
      i++;
    }
    return res;
  };

  Utils.getStringFromFile = function(path, callback) {
    var data, fs, name, req, xhr, _i, _len, _ref;
    if (callback == null) {
      callback = null;
    }
    xhr = null;
    if (typeof window !== "undefined" && window !== null) {
      if (window.XMLHttpRequest) {
        xhr = new XMLHttpRequest();
      } else if (window.ActiveXObject) {
        _ref = ["Msxml2.XMLHTTP.6.0", "Msxml2.XMLHTTP.3.0", "Msxml2.XMLHTTP", "Microsoft.XMLHTTP"];
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          name = _ref[_i];
          try {
            xhr = new ActiveXObject(name);
          } catch (_error) {}
        }
      }
    }
    if (xhr != null) {
      if (callback != null) {
        xhr.onreadystatechange = function() {
          if (xhr.readyState === 4) {
            if (xhr.status === 200 || xhr.status === 0) {
              return callback(xhr.responseText);
            } else {
              return callback(null);
            }
          }
        };
        xhr.open('GET', path, true);
        return xhr.send(null);
      } else {
        xhr.open('GET', path, false);
        xhr.send(null);
        if (xhr.status === 200 || xhr.status === 0) {
          return xhr.responseText;
        }
        return null;
      }
    } else {
      req = require;
      fs = req('fs');
      if (callback != null) {
        return fs.readFile(path, function(err, data) {
          if (err) {
            return callback(null);
          } else {
            return callback(String(data));
          }
        });
      } else {
        data = fs.readFileSync(path);
        if (data != null) {
          return String(data);
        }
        return null;
      }
    }
  };

  return Utils;

})();

module.exports = Utils;