text: // Copyright 2009 The Closure Library Authors. All Rights Reserved.
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  //      http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS-IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  
  
  /**
   * @fileoverview A utility to get better currency format pattern.
   *
   * This module implements a new currency format representation model. It
   * provides 3 currency representation forms: global, portable and local. Local
   * format is the most popular format people use to represent currency in its
   * circulating country without worrying about how it should be distinguished
   * from other currencies.  Global format is a formal representation in context
   * of multiple currencies in same page, it is ISO 4217 currency code. Portable
   * format is a compromise between global and local. It looks similar to how
   * people would like to see how their currency is being represented in other
   * media. While at the same time, it should be distinguishable to world's
   * popular currencies (like USD, EUR) and currencies somewhat relevant in the
   * area (like CNY in HK, though native currency is HKD). There is no guarantee
   * of uniqueness.
   *
   */
  
  
  goog.provide('goog.i18n.currency');
  goog.provide('goog.i18n.currency.CurrencyInfo');
  goog.provide('goog.i18n.currency.CurrencyInfoTier2');
  
  
  /**
   * The mask of precision field.
   * @private
   */
  goog.i18n.currency.PRECISION_MASK_ = 0x07;
  
  
  /**
   * Whether the currency sign should be positioned after the number.
   * @private
   */
  goog.i18n.currency.POSITION_FLAG_ = 0x10;
  
  
  /**
   * Whether a space should be inserted between the number and currency sign.
   * @private
   */
  goog.i18n.currency.SPACE_FLAG_ = 0x20;
  
  
  /**
   * Whether tier2 was enabled already by calling addTier2Support().
   * @private
   */
  goog.i18n.currency.tier2Enabled_ = false;
  
  
  /**
   * This function will add tier2 currency support. Be default, only tier1
   * (most popular currencies) are supported. If an application really needs
   * to support some of the rarely used currencies, it should call this function
   * before any other functions in this namespace.
   */
  goog.i18n.currency.addTier2Support = function() {
    // Protection from executing this these again and again.
    if (!goog.i18n.currency.tier2Enabled_) {
      for (var key in goog.i18n.currency.CurrencyInfoTier2) {
        goog.i18n.currency.CurrencyInfo[key] =
            goog.i18n.currency.CurrencyInfoTier2[key];
      }
      goog.i18n.currency.tier2Enabled_ = true;
    }
  };
  
  
  /**
   * Global currency pattern always uses ISO-4217 currency code as prefix. Local
   * currency sign is added if it is different from currency code. Each currency
   * is unique in this form. The negative side is that ISO code looks weird in
   * some countries as people normally do not use it. Local currency sign
   * alleviates the problem, but also makes it a little verbose.
   *
   * @param {string} currencyCode ISO-4217 3-letter currency code.
   * @return {string} Global currency pattern string for given currency.
   */
  goog.i18n.currency.getGlobalCurrencyPattern = function(currencyCode) {
    var info = goog.i18n.currency.CurrencyInfo[currencyCode];
    var patternNum = info[0];
    if (currencyCode == info[1]) {
      return goog.i18n.currency.getCurrencyPattern_(patternNum, info[1]);
    }
    return currencyCode + ' ' +
        goog.i18n.currency.getCurrencyPattern_(patternNum, info[1]);
  };
  
  
  /**
   * Return global currency sign string for those applications
   * that want to handle currency sign themselves.
   *
   * @param {string} currencyCode ISO-4217 3-letter currency code.
   * @return {string} Global currency sign for given currency.
   */
  goog.i18n.currency.getGlobalCurrencySign = function(currencyCode) {
    var info = goog.i18n.currency.CurrencyInfo[currencyCode];
    return (currencyCode == info[1]) ? currencyCode :
        currencyCode + ' ' + info[1];
  };
  
  
  /**
   * Local currency pattern is the most frequently used pattern in currency's
   * native region. It does not care about how it is distinguished from other
   * currencies.
   *
   * @param {string} currencyCode ISO-4217 3-letter currency code.
   * @return {string} Local currency pattern string for given currency.
   */
  goog.i18n.currency.getLocalCurrencyPattern = function(currencyCode) {
    var info = goog.i18n.currency.CurrencyInfo[currencyCode];
    return goog.i18n.currency.getCurrencyPattern_(info[0], info[1]);
  };
  
  
  /**
   * Returns local currency sign string for those applications that need to
   * handle currency sign separately.
   *
   * @param {string} currencyCode ISO-4217 3-letter currency code.
   * @return {string} Local currency sign for given currency.
   */
  goog.i18n.currency.getLocalCurrencySign = function(currencyCode) {
    return goog.i18n.currency.CurrencyInfo[currencyCode][1];
  };
  
  
  /**
   * Portable currency pattern is a compromise between local and global. It is
   * not a mere blend or mid-way between the two. Currency sign is chosen so that
   * it looks familiar to native users. It also has enough information to
   * distinguish itself from other popular currencies in its native region.
   * In this pattern, currency sign symbols that has availability problem in
   * popular fonts are also avoided.
   *
   * @param {string} currencyCode ISO-4217 3-letter currency code.
   * @return {string} Portable currency pattern string for given currency.
   */
  goog.i18n.currency.getPortableCurrencyPattern = function(currencyCode) {
    var info = goog.i18n.currency.CurrencyInfo[currencyCode];
    return goog.i18n.currency.getCurrencyPattern_(info[0], info[2]);
  };
  
  
  /**
   * Return portable currency sign string for those applications that need to
   * handle currency sign themselves.
   *
   * @param {string} currencyCode ISO-4217 3-letter currency code.
   * @return {string} Portable currency sign for given currency.
   */
  goog.i18n.currency.getPortableCurrencySign = function(currencyCode) {
    return goog.i18n.currency.CurrencyInfo[currencyCode][2];
  };
  
  
  /**
   * This function returns the default currency sign position. Some applications
   * may want to handle currency sign and currency amount separately. This
   * function can be used in such situations to correctly position the currency
   * sign relative to the amount.
   *
   * To match the behavior of ICU, position is not determined by display locale.
   *
   * @param {string} currencyCode ISO-4217 3-letter currency code.
   * @return {boolean} true if currency should be positioned before amount field.
   */
  goog.i18n.currency.isPrefixSignPosition = function(currencyCode) {
    return (goog.i18n.currency.CurrencyInfo[currencyCode][0] &
            goog.i18n.currency.POSITION_FLAG_) == 0;
  };
  
  
  /**
   * This function constructs the currency pattern. Currency sign is provided. The
   * pattern information is encoded in patternNum.
   *
   * @param {number} patternNum Encoded pattern number that has
   *     currency pattern information.
   * @param {string} sign The currency sign that will be used in pattern.
   * @return {string} currency pattern string.
   * @private
   */
  goog.i18n.currency.getCurrencyPattern_ = function(patternNum, sign) {
    var strParts = ['#,##0'];
    var precision = patternNum & goog.i18n.currency.PRECISION_MASK_;
    if (precision > 0) {
      strParts.push('.');
      for (var i = 0; i < precision; i++) {
        strParts.push('0');
      }
    }
    if ((patternNum & goog.i18n.currency.POSITION_FLAG_) == 0) {
      strParts.unshift((patternNum & goog.i18n.currency.SPACE_FLAG_) ?
                       "' " : "'");
      strParts.unshift(sign);
      strParts.unshift("'");
    } else {
      strParts.push((patternNum & goog.i18n.currency.SPACE_FLAG_) ? " '" : "'",
                    sign, "'");
    }
    return strParts.join('');
  };
  
  
  /**
   * Modify currency pattern string by adjusting precision for given currency.
   * Standard currency pattern will have 2 digit after decimal point.
   * Examples:
   *   $#,##0.00 ->  $#,##0    (precision == 0)
   *   $#,##0.00 ->  $#,##0.0  (precision == 1)
   *   $#,##0.00 ->  $#,##0.000  (precision == 3)
   *
   * @param {string} pattern currency pattern string.
   * @param {string} currencyCode 3-letter currency code.
   * @return {string} modified currency pattern string.
   */
  goog.i18n.currency.adjustPrecision = function(pattern, currencyCode) {
    var strParts = ['0'];
    var info = goog.i18n.currency.CurrencyInfo[currencyCode];
    var precision = info[0] & goog.i18n.currency.PRECISION_MASK_;
    if (precision > 0) {
      strParts.push('.');
      for (var i = 0; i < precision; i++) {
        strParts.push('0');
      }
    }
    return pattern.replace(/0.00/g, strParts.join(''));
  };
  
  
  /**
   * Tier 1 currency information.
   *
   * The first number in the array is a combination of the precision mask and
   * other flags. The precision mask indicates how many decimal places to show for
   * the currency. Valid values are [0..7]. The position flag indicates whether
   * the currency sign should be positioned after the number. Valid values are 0
   * (before the number) or 16 (after the number). The space flag indicates
   * whether a space should be inserted between the currency sign and number.
   * Valid values are 0 (no space) and 32 (space).
   *
   * The number in the array is calculated by adding together the mask and flag
   * values. For example:
   *
   * 0: no precision (0), currency sign first (0), no space (0)
   * 2: two decimals precision (2), currency sign first (0), no space (0)
   * 18: two decimals precision (2), currency sign last (16), no space (0)
   * 50: two decimals precision (2), currency sign last (16), space (32)
   *
   * @const {!Object<!Array<?>>}
   */
  goog.i18n.currency.CurrencyInfo = {
    'AED': [2, 'dh', '\u062f.\u0625.', 'DH'],
    'ALL': [0, 'Lek', 'Lek'],
    'AUD': [2, '$', 'AU$'],
    'BDT': [2, '\u09F3', 'Tk'],
    'BGN': [2, 'lev', 'lev'],
    'BRL': [2, 'R$', 'R$'],
    'CAD': [2, '$', 'C$'],
    'CDF': [2, 'FrCD', 'CDF'],
    'CHF': [2, 'CHF', 'CHF'],
    'CLP': [0, '$', 'CL$'],
    'CNY': [2, '¥', 'RMB¥'],
    'COP': [0, '$', 'COL$'],
    'CRC': [0, '\u20a1', 'CR\u20a1'],
    'CZK': [50, 'K\u010d', 'K\u010d'],
    'DKK': [18, 'kr', 'kr'],
    'DOP': [2, '$', 'RD$'],
    'EGP': [2, '£', 'LE'],
    'ETB': [2, 'Birr', 'Birr'],
    'EUR': [2, '€', '€'],
    'GBP': [2, '£', 'GB£'],
    'HKD': [2, '$', 'HK$'],
    'HRK': [2, 'kn', 'kn'],
    'HUF': [0, 'Ft', 'Ft'],
    'IDR': [0, 'Rp', 'Rp'],
    'ILS': [2, '\u20AA', 'IL\u20AA'],
    'INR': [2, '\u20B9', 'Rs'],
    'IRR': [0, 'Rial', 'IRR'],
    'ISK': [0, 'kr', 'kr'],
    'JMD': [2, '$', 'JA$'],
    'JPY': [0, '¥', 'JP¥'],
    'KRW': [0, '\u20A9', 'KR₩'],
    'LKR': [2, 'Rs', 'SLRs'],
    'LTL': [2, 'Lt', 'Lt'],
    'MNT': [0, '\u20AE', 'MN₮'],
    'MVR': [2, 'Rf', 'MVR'],
    'MXN': [2, '$', 'Mex$'],
    'MYR': [2, 'RM', 'RM'],
    'NOK': [50, 'kr', 'NOkr'],
    'PAB': [2, 'B/.', 'B/.'],
    'PEN': [2, 'S/.', 'S/.'],
    'PHP': [2, '\u20B1', 'Php'],
    'PKR': [0, 'Rs', 'PKRs.'],
    'PLN': [50, 'z\u0142', 'z\u0142'],
    'RON': [2, 'RON', 'RON'],
    'RSD': [0, 'din', 'RSD'],
    'RUB': [50, 'руб.', 'руб.'],
    'SAR': [2, 'Rial', 'Rial'],
    'SEK': [2, 'kr', 'kr'],
    'SGD': [2, '$', 'S$'],
    'THB': [2, '\u0e3f', 'THB'],
    'TRY': [2, 'TL', 'YTL'],
    'TWD': [2, 'NT$', 'NT$'],
    'TZS': [0, 'TSh', 'TSh'],
    'UAH': [2, '\u20B4', 'UAH'],
    'USD': [2, '$', 'US$'],
    'UYU': [2, '$', '$U'],
    'VND': [0, '\u20AB', 'VN\u20AB'],
    'YER': [0, 'Rial', 'Rial'],
    'ZAR': [2, 'R', 'ZAR']
  };
  
  
  /**
   * Tier 2 currency information.
   * @const {!Object<!Array<?>>}
   */
  goog.i18n.currency.CurrencyInfoTier2 = {
    'AFN': [48, 'Af.', 'AFN'],
    'AMD': [0, 'Dram', 'dram'],
    'ANG': [2, 'NAf.', 'ANG'],
    'AOA': [2, 'Kz', 'Kz'],
    'ARS': [2, '$', 'AR$'],
    'AWG': [2, 'Afl.', 'Afl.'],
    'AZN': [2, 'man.', 'man.'],
    'BAM': [2, 'KM', 'KM'],
    'BBD': [2, '$', 'Bds$'],
    'BHD': [3, 'din', 'din'],
    'BIF': [0, 'FBu', 'FBu'],
    'BMD': [2, '$', 'BD$'],
    'BND': [2, '$', 'B$'],
    'BOB': [2, 'Bs', 'Bs'],
    'BSD': [2, '$', 'BS$'],
    'BTN': [2, 'Nu.', 'Nu.'],
    'BWP': [2, 'P', 'pula'],
    'BYR': [0, 'BYR', 'BYR'],
    'BZD': [2, '$', 'BZ$'],
    'CUC': [1, '$', 'CUC$'],
    'CUP': [2, '$', 'CU$'],
    'CVE': [2, 'CVE', 'Esc'],
    'DJF': [0, 'Fdj', 'Fdj'],
    'DZD': [2, 'din', 'din'],
    'ERN': [2, 'Nfk', 'Nfk'],
    'FJD': [2, '$', 'FJ$'],
    'FKP': [2, '£', 'FK£'],
    'GEL': [2, 'GEL', 'GEL'],
    'GHS': [2, 'GHS', 'GHS'],
    'GIP': [2, '£', 'GI£'],
    'GMD': [2, 'GMD', 'GMD'],
    'GNF': [0, 'FG', 'FG'],
    'GTQ': [2, 'Q', 'GTQ'],
    'GYD': [0, '$', 'GY$'],
    'HNL': [2, 'L', 'HNL'],
    'HTG': [2, 'HTG', 'HTG'],
    'IQD': [0, 'din', 'IQD'],
    'JOD': [3, 'din', 'JOD'],
    'KES': [2, 'Ksh', 'Ksh'],
    'KGS': [2, 'KGS', 'KGS'],
    'KHR': [2, 'Riel', 'KHR'],
    'KMF': [0, 'CF', 'KMF'],
    'KPW': [0, '\u20A9KP', 'KPW'],
    'KWD': [3, 'din', 'KWD'],
    'KYD': [2, '$', 'KY$'],
    'KZT': [2, '\u20B8', 'KZT'],
    'LAK': [0, '\u20AD', '\u20AD'],
    'LBP': [0, 'L£', 'LBP'],
    'LRD': [2, '$', 'L$'],
    'LSL': [2, 'LSL', 'LSL'],
    'LYD': [3, 'din', 'LD'],
    'MAD': [2, 'dh', 'MAD'],
    'MDL': [2, 'MDL', 'MDL'],
    'MGA': [0, 'Ar', 'MGA'],
    'MKD': [2, 'din', 'MKD'],
    'MMK': [0, 'K', 'MMK'],
    'MOP': [2, 'MOP', 'MOP$'],
    'MRO': [0, 'MRO', 'MRO'],
    'MUR': [0, 'MURs', 'MURs'],
    'MWK': [2, 'MWK', 'MWK'],
    'MZN': [2, 'MTn', 'MTn'],
    'NAD': [2, '$', 'N$'],
    'NGN': [2, '\u20A6', 'NG\u20A6'],
    'NIO': [2, 'C$', 'C$'],
    'NPR': [2, 'Rs', 'NPRs'],
    'NZD': [2, '$', 'NZ$'],
    'OMR': [3, 'Rial', 'OMR'],
    'PGK': [2, 'PGK', 'PGK'],
    'PYG': [0, 'Gs', 'PYG'],
    'QAR': [2, 'Rial', 'QR'],
    'RWF': [0, 'RF', 'RF'],
    'SBD': [2, '$', 'SI$'],
    'SCR': [2, 'SCR', 'SCR'],
    'SDG': [2, 'SDG', 'SDG'],
    'SHP': [2, '£', 'SH£'],
    'SLL': [0, 'SLL', 'SLL'],
    'SOS': [0, 'SOS', 'SOS'],
    'SRD': [2, '$', 'SR$'],
    'SSP': [2, '£', 'SSP'],
    'STD': [0, 'Db', 'Db'],
    'SYP': [0, '£', 'SY£'],
    'SZL': [2, 'SZL', 'SZL'],
    'TJS': [2, 'Som', 'TJS'],
    'TND': [3, 'din', 'DT'],
    'TOP': [2, 'T$', 'T$'],
    'TTD': [2, '$', 'TT$'],
    'UGX': [0, 'UGX', 'UGX'],
    'UZS': [0, 'so\u02bcm', 'UZS'],
    'VEF': [2, 'Bs', 'Bs'],
    'VUV': [0, 'VUV', 'VUV'],
    'WST': [2, 'WST', 'WST'],
    'XAF': [0, 'FCFA', 'FCFA'],
    'XCD': [2, '$', 'EC$'],
    'XOF': [0, 'CFA', 'CFA'],
    'XPF': [0, 'FCFP', 'FCFP'],
    'ZMW': [0, 'ZMW', 'ZMW'],
    'ZWD': [0, '$', 'Z$']
  };
  