/*
* Copyright 2010 Google Inc.
*
* 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.
*/
package com.google.gwt.tools.cldr;
import com.google.gwt.i18n.shared.GwtLocale;
import org.unicode.cldr.util.CLDRFile;
import org.unicode.cldr.util.Factory;
import org.unicode.cldr.util.XPathParts;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
/**
* Loads data needed to produce DateTimeFormatInfo implementations.
*/
public class CurrencyDataProcessor extends Processor {
private Map<String, Integer> currencyFractions = new HashMap<String, Integer>();
private int defaultCurrencyFraction;
private Map<String, Integer> rounding = new HashMap<String, Integer>();
private Set<String> stillInUse = new HashSet<String>();
public CurrencyDataProcessor(File outputDir, Factory cldrFactory, LocaleData localeData) {
super(outputDir, cldrFactory, localeData);
}
@Override
protected void cleanupData() {
localeData.removeDuplicates("currency");
}
@Override
protected void loadData() throws IOException {
System.out.println("Loading data for currencies");
localeData.addVersions(cldrFactory);
loadLocaleIndependentCurrencyData();
localeData.addCurrencyEntries("currency", cldrFactory, currencyFractions,
defaultCurrencyFraction, stillInUse, rounding);
}
@Override
protected void printHeader(PrintWriter pw) {
printPropertiesHeader(pw);
pw.println();
pw.println("#");
pw.println("# The key is an ISO4217 currency code, and the value is of the " + "form:");
pw.println("# display name|symbol|decimal digits|not-used-flag|rounding");
pw.println("# If a symbol is not supplied, the currency code will be used");
pw.println("# If # of decimal digits is omitted, 2 is used");
pw.println("# If a currency is not generally used, not-used-flag=1");
pw.println("# If a currency should be rounded to a multiple of of the least significant");
pw.println("# digit, rounding will be present");
pw.println("# Trailing empty fields can be omitted");
pw.println();
}
@Override
protected void writeOutputFiles() throws IOException {
for (GwtLocale locale : localeData.getNonEmptyLocales()) {
String path = "client/impl/cldr/CurrencyData";
PrintWriter pw = createOutputFile(path + Processor.localeSuffix(locale) + ".properties");
printHeader(pw);
printVersion(pw, locale, "# ");
Map<String, String> map = localeData.getEntries("currency", locale);
String[] keys = new String[map.size()];
map.keySet().toArray(keys);
Arrays.sort(keys);
for (String key : keys) {
pw.print(key);
pw.print(" = ");
pw.println(map.get(key));
}
pw.close();
}
}
private void loadLocaleIndependentCurrencyData() {
CLDRFile supp = cldrFactory.getSupplementalData();
// load the table of default # of decimal places and rounding for each currency
defaultCurrencyFraction = 0;
XPathParts parts = new XPathParts();
Iterator<String> iterator = supp.iterator("//supplementalData/currencyData/fractions/info");
while (iterator.hasNext()) {
String path = iterator.next();
parts.set(supp.getFullXPath(path));
Map<String, String> attr = parts.findAttributes("info");
if (attr == null) {
continue;
}
String curCode = attr.get("iso4217");
int digits = Integer.valueOf(attr.get("digits"));
if ("DEFAULT".equalsIgnoreCase(curCode)) {
defaultCurrencyFraction = digits;
} else {
currencyFractions.put(curCode, digits);
}
int roundingDigits = Integer.valueOf(attr.get("rounding"));
if (roundingDigits != 0) {
rounding.put(curCode, roundingDigits);
}
}
// find which currencies are still in use in some region, everything else
// should be marked as deprecated
iterator = supp.iterator("//supplementalData/currencyData/region");
while (iterator.hasNext()) {
String path = iterator.next();
parts.set(supp.getFullXPath(path));
Map<String, String> attr = parts.findAttributes("currency");
if (attr == null) {
continue;
}
String region = parts.findAttributeValue("region", "iso3166");
String curCode = attr.get("iso4217");
if ("ZZ".equals(region) || "false".equals(attr.get("tender")) || "XXX".equals(curCode)) {
// ZZ is an undefined region, XXX is an unknown currency code (and needs
// to be special-cased because it is listed as used in Anartica!)
continue;
}
String to = attr.get("to");
if (to == null) {
stillInUse.add(curCode);
}
}
}
}