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+// 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 implement 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 currencies 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');
+
+
+/**
+ * The mask of precision field.
+ * @private
+ */
+goog.i18n.currency.PRECISION_MASK_ = 0x07;
+
+
+/**
+ * If this flag is set, it means the currency sign should position before
+ * number.
+ * @private
+ */
+goog.i18n.currency.POSITION_FLAG_ = 0x08;
+
+
+/**
+ * Should a space to inserted between number and currency sign.
+ * @private
+ */
+goog.i18n.currency.SPACE_FLAG_ = 0x20;
+
+
+/**
+ * This function will add tier2 currency support. Be default, only tier1
+ * (most popular currencies) are supportted. If an application really need
+ * to support some of the rarely used currency, it should call this function
+ * before any other functions in this namespace.
+ */
+goog.i18n.currency.addTier2Support = function() {
+  for (var key in goog.i18n.currency.CurrencyInfoTier2) {
+    goog.i18n.currency.CurrencyInfo[key] =
+        goog.i18n.currency.CurrencyInfoTier2[key];
+  }
+};
+
+
+/**
+ * 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 poeple normally do not use it. Local currency sign
+ * alleviate the problem, but also make 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]) {
+    if ((patternNum & goog.i18n.currency.POSITION_FLAG_) == 0) {
+      patternNum |= goog.i18n.currency.SPACE_FLAG_;
+    }
+    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];
+  if (currencyCode == info[1]) {
+      return currencyCode;
+  }
+  return 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 application
+ * may want to handle currency sign and currency amount separately. This
+ * function can be used in such situation to position the currency sign
+ * relative to amount field correctly.
+ * @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 construct 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('');
+};
+
+
+/**
+ * Tier 1 currency information.
+ * @type {!Object.<!Array>}
+ */
+goog.i18n.currency.CurrencyInfo = {
+  'AED': [2, '\u062F\u002e\u0625', 'DH'],
+  'ARS': [2, '$', 'AR$'],
+  'AUD': [2, '$', 'AU$'],
+  'BDT': [2, '\u09F3', 'Tk'],
+  'BRL': [2, 'R$', 'R$'],
+  'CAD': [2, '$', 'C$'],
+  'CHF': [2, 'Fr.', 'CHF'],
+  'CLP': [0, '$', 'CL$'],
+  'CNY': [2, '¥', 'RMB¥'],
+  'COP': [2, '$', 'COL$'],
+  'CRC': [2, '\u20a1', 'CR₡'],
+  'CUP': [2, '$', '$MN'],
+  'CZK': [10, 'Kč', 'Kč'],
+  'DKK': [26, 'kr', 'kr'],
+  'DOP': [2, '$', 'RD$'],
+  'EGP': [2, '£', 'LE'],
+  'EUR': [26, '€', '€'],
+  'GBP': [2, '£', 'GB£'],
+  'HKD': [2, '$', 'HK$'],
+  'ILS': [10, '\u20AA', 'IL₪'],
+  'INR': [2, 'Rs', 'Rs'],
+  'ISK': [10, 'kr', 'kr'],
+  'JMD': [2, '$', 'JA$'],
+  'JPY': [0, '¥', 'JP¥'],
+  'KRW': [0, '\u20A9', 'KR₩'],
+  'LKR': [2, 'Rs', 'SLRs'],
+  'MNT': [2, '\u20AE', 'MN₮'],
+  'MXN': [2, '$', 'Mex$'],
+  'MYR': [2, 'RM', 'RM'],
+  'NOK': [26, 'kr', 'NOkr'],
+  'PAB': [2, 'B/.', 'B/.'],
+  'PEN': [2, 'S/.', 'S/.'],
+  'PHP': [2, 'P', 'PHP'],
+  'PKR': [2, 'Rs.', 'PKRs.'],
+  'RUB': [10, 'руб', 'руб'],
+  'SAR': [2, '\u0633\u002E\u0631', 'SR'],
+  'SEK': [10, 'kr', 'kr'],
+  'SGD': [2, '$', 'S$'],
+  'THB': [2, '\u0e3f', 'THB'],
+  'TRY': [2, 'YTL', 'YTL'],
+  'TWD': [2, 'NT$', 'NT$'],
+  'USD': [2, '$', 'US$'],
+  'UYU': [2, '$', 'UY$'],
+  'VND': [10, '\u20AB', 'VN₫'],
+  'YER': [2, 'YER', 'YER'],
+  'ZAR': [2, 'R', 'ZAR']
+};
+
+
+/**
+ * Tier 2 currency information.
+ * @type {!Object.<!Array>}
+ */
+goog.i18n.currency.CurrencyInfoTier2 = {
+  'AFN': [18, '\u060b', 'AFN'],
+  'ALL': [2, 'Lek', 'Lek'],
+  'AMD': [10, '\u0564\u0580\u002e', 'dram'],
+  'ANG': [2, '\u0083', 'NAƒ'],
+  'AOA': [2, 'Kz', 'Kz'],
+  'AWG': [2, 'ƒ', 'Afl.'],
+  'AZN': [2, 'm', 'man'],
+  'BAM': [18, 'КМ', 'KM'],
+  'BBD': [2, '$', 'Bds$'],
+  'BGN': [10, '\u043b\u0432', 'лв'],
+  'BHD': [3, '\u0628\u002e\u062f\u002e', 'BD'],
+  'BIF': [0, 'FBu', 'FBu'],
+  'BMD': [2, '$', 'BD$'],
+  'BND': [2, '$', 'B$'],
+  'BOB': [2, 'B$', 'B$'],
+  'BSD': [2, '$', 'B$'],
+  'BTN': [2, 'Nu.', 'Nu.'],
+  'BWP': [2, 'P', 'pula'],
+  'BYR': [0, 'Br', 'Br'],
+  'BZD': [2, '$', 'BZ$'],
+  'CDF': [2, 'F', 'CDF'],
+  'CVE': [2, '$', 'Esc'],
+  'DJF': [0, 'Fdj', 'Fdj'],
+  'DZD': [2, '\u062f\u062C', 'DA'],
+  'EEK': [10, 'EEK', 'EEK'],
+  'ERN': [2, 'Nfk', 'Nfk'],
+  'ETB': [2, 'Br', 'Br'],
+  'FJD': [2, '$', 'FJ$'],
+  'FKP': [2, '£', 'FK£'],
+  'GEL': [2, 'GEL', 'GEL'],
+  'GHS': [2, '\u20B5', 'GHS¢'],
+  'GIP': [2, '£', 'GI£'],
+  'GMD': [2, 'D', 'GMD'],
+  'GNF': [0, 'FG', 'FG'],
+  'GTQ': [2, 'Q', 'GTQ'],
+  'GYD': [2, '$', 'GY$'],
+  'HNL': [2, 'L', 'HNL'],
+  'HRK': [2, 'kn', 'kn'],
+  'HTG': [2, 'G', 'HTG'],
+  'HUF': [10, 'Ft', 'Ft'],
+  'IDR': [2, 'Rp', 'Rp'],
+  'IQD': [3, '\u0639\u062F', 'IQD'],
+  'IRR': [2, '\ufdfc', 'IRR'],
+  'JOD': [3, 'JOD', 'JOD'],
+  'KES': [2, 'KSh', 'KSh'],
+  'KGS': [2, 'som', 'som'],
+  'KHR': [10, '\u17DB', 'KHR'],
+  'KMF': [0, 'KMF', 'KMF'],
+  'KPW': [2, '\u20A9', 'KPW'],
+  'KWD': [3, '\u062F\u002e\u0643', 'KWD'],
+  'KYD': [2, '$', 'CI$'],
+  'KZT': [10, 'KZT', 'KZT'],
+  'LAK': [2, '\u20AD', 'LA₭'],
+  'LBP': [2, '\u0644\u002e\u0644', 'LBP'],
+  'LRD': [2, '$', 'L$'],
+  'LSL': [2, 'L', 'LSL'],
+  'LTL': [10, 'Lt', 'Lt'],
+  'LVL': [10, 'Ls', 'Ls'],
+  'LYD': [3, '\u0644\u002e\u062F', 'LD'],
+  'MAD': [2, '\u0645\u002E\u062F\u002E', 'MAD'],
+  'MDL': [2, 'MDL', 'MDL'],
+  'MGA': [1, 'MGA', 'MGA'],
+  'MKD': [2, 'MKD', 'MKD'],
+  'MMK': [2, 'K', 'MMK'],
+  'MOP': [2, 'MOP$', 'MOP$'],
+  'MRO': [1, 'UM', 'UM'],
+  'MUR': [2, 'Rs', 'MURs'],
+  'MVR': [2, 'Rf', 'MRF'],
+  'MWK': [2, 'MK', 'MK'],
+  'MZN': [2, 'MTn', 'MTn'],
+  'NAD': [2, '$', 'N$'],
+  'NGN': [2, '\u20A6', 'NG₦'],
+  'NIO': [2, 'C$', 'C$'],
+  'NPR': [2, 'Rs', 'NPRs'],
+  'NZD': [2, '$', 'NZ$'],
+  'OMR': [3, '\u0639\u002E\u062F\u002E', 'OMR'],
+  'PGK': [2, 'K', 'PGK'],
+  'PLN': [10, 'zł', 'zł'],
+  'PYG': [0, '\u20b2', 'PYG'],
+  'QAR': [2, '\u0642\u002E\u0631', 'QR'],
+  'RON': [2, 'L', 'RON'],
+  'RSD': [2, 'РС\u0414', 'RSD'],
+  'RWF': [0, 'RF', 'RF'],
+  'SBD': [2, '$', 'SI$'],
+  'SCR': [2, 'SR', 'SCR'],
+  'SDG': [2, 'SDG', 'SDG'],
+  'SHP': [2, '£', 'SH£'],
+  'SKK': [10, 'Sk', 'Sk'],
+  'SLL': [2, 'Le', 'Le'],
+  'SOS': [2, 'So. Sh.', 'So. Sh.'],
+  'SRD': [2, '$', 'SR$'],
+  'STD': [2, 'Db', 'Db'],
+  'SYP': [18, 'SYP', 'SYP'],
+  'SZL': [2, 'L', 'SZL'],
+  'TJS': [2, 'TJS', 'TJS'],
+  'TMM': [2, 'm', 'TMM'],
+  'TND': [3, '\u062F\u002e\u062A ', 'DT'],
+  'TOP': [2, 'T$', 'T$'],
+  'TTD': [2, '$', 'TT$'],
+  'TZS': [10, 'TZS', 'TZS'],
+  'UAH': [10, '\u20B4', 'грн'],
+  'UGX': [2, 'USh', 'USh'],
+  'UZS': [2, 'UZS', 'UZS'],
+  'VEF': [2, 'Bs.F', 'Bs.F'],
+  'VUV': [0, 'Vt', 'Vt'],
+  'WST': [2, 'WS$', 'WS$'],
+  'XAF': [0, 'FCFA', 'FCFA'],
+  'XCD': [2, '$', 'EC$'],
+  'XOF': [0, 'CFA', 'CFA'],
+  'XPF': [0, 'F', 'XPF'],
+  'ZMK': [2, 'ZK', 'ZK'],
+  'ZWL': [2, '$', 'ZW$']
+};