ICU-2882 check in Mark's demo

X-SVN-Rev: 12060
2003-05-23 00:45:16 +00:00 · 2003-05-23 00:45:16 +00:00 · 5baae7fa57
commit 5baae7fa57
parent 8f4abcbf5c
1 changed files with 113 additions and 0 deletions
--- a/icu4j/src/com/ibm/icu/dev/demo/number/CurrencyDemo.java
+++ b/icu4j/src/com/ibm/icu/dev/demo/number/CurrencyDemo.java
@ -0,0 +1,113 @@
+/*
+**********************************************************************
+* Copyright (c) 2003, International Business Machines
+* Corporation and others.  All Rights Reserved.
+**********************************************************************
+* Author: Mark Davis
+* Created: May 22 2003
+* Since: ICU 2.6
+**********************************************************************
+*/
+package com.ibm.icu.dev.demo.number;
+import com.ibm.icu.util.Currency;
+import com.ibm.icu.text.NumberFormat;
+import com.ibm.icu.text.DecimalFormat;
+import com.ibm.icu.text.DecimalFormatSymbols;
+import com.ibm.icu.impl.Utility;
+import java.util.Locale;
+import java.util.Map;
+import java.util.HashMap;
+
+/**
+ * Demonstration code to illustrate how to obtain ICU 2.6-like currency
+ * behavior using pre-ICU 2.6 ICU4J.
+ * @author Mark Davis
+ */
+public class CurrencyDemo {
+
+    public static void main(String[] args) {
+        testFormatHack(true);
+    }
+
+    static NumberFormat getCurrencyFormat(Currency currency,
+                                          Locale displayLocale,
+                                          boolean ICU26) {
+        // code for ICU 2.6
+        if (ICU26) {
+            NumberFormat result = NumberFormat.getCurrencyInstance(displayLocale);
+            result.setCurrency(currency);
+            return result;
+        }
+
+        // ugly work-around for 2.4
+        DecimalFormat result = (DecimalFormat)NumberFormat.getCurrencyInstance(displayLocale);
+        HackCurrencyInfo hack = (HackCurrencyInfo)(hackData.get(currency.getCurrencyCode()));
+        result.setMinimumFractionDigits(hack.decimals);
+        result.setMaximumFractionDigits(hack.decimals);
+        result.setRoundingIncrement(hack.rounding);
+        DecimalFormatSymbols symbols = result.getDecimalFormatSymbols();
+        symbols.setCurrencySymbol(hack.symbol);
+        result.setDecimalFormatSymbols(symbols);
+        return result;
+    }
+        
+    static Map hackData = new HashMap();
+    static class HackCurrencyInfo {
+        int decimals;
+        double rounding;
+        String symbol;
+        HackCurrencyInfo(int decimals, double rounding, String symbol) {
+            this.decimals = decimals;
+            this.rounding = rounding;
+            this.symbol = symbol;
+        }
+    }
+    static {
+        hackData.put("USD", new HackCurrencyInfo(2, 0, "$"));
+        hackData.put("GBP", new HackCurrencyInfo(2, 0, "\u00A3"));
+        hackData.put("JPY", new HackCurrencyInfo(0, 0, "\u00A5"));
+        hackData.put("EUR", new HackCurrencyInfo(2, 0, "\u20AC"));
+    }
+
+    /**
+     * Walk through all locales and compare the output of the ICU26
+     * currency format with the "hacked" currency format.
+     * @param quiet if true, only display discrepancies.  Otherwise,
+     * display all results.
+     */
+    static void testFormatHack(boolean quiet) {
+        String[] testCurrencies = {"USD","GBP","JPY","EUR"};
+        Locale[] testLocales = NumberFormat.getAvailableLocales();
+        for (int i = 0; i < testLocales.length; ++i) {
+            // since none of this should vary by country, we'll just do by language
+            if (!testLocales[i].getCountry().equals("")) continue;
+            boolean noOutput = true;
+            if (!quiet) {
+                System.out.println(testLocales[i].getDisplayName());
+                noOutput = false;
+            }
+            for (int j = 0; j < testCurrencies.length; ++j) {
+                NumberFormat nf26 = getCurrencyFormat(Currency.getInstance(testCurrencies[j]), testLocales[i], true);
+                String str26 = nf26.format(1234.567);
+                if (!quiet) {
+                    System.out.print("\t" + Utility.escape(str26));
+                }
+                NumberFormat nf24 = getCurrencyFormat(Currency.getInstance(testCurrencies[j]), testLocales[i], false);
+                String str24 = nf24.format(1234.567);
+                if (!str24.equals(str26)) {
+                    if (noOutput) {
+                        System.out.println(testLocales[i].getDisplayName());
+                        noOutput = false;
+                    }
+                    if (quiet) {
+                        System.out.print("\t" + Utility.escape(str26));
+                    }
+                    System.out.print(" (" + Utility.escape(str24) + ")");
+                }
+            }
+            if (!noOutput) {
+                System.out.println();
+            }
+        }
+    }
+}