Add support for NumberFormat.get*Format methods

teavm-classlib/src/main/java/org/teavm/classlib/impl/unicode/CLDRHelper.java

@@ -173,20 +173,23 @@ public class CLDRHelper {
         return resolveFormatSymbols(getNumberFormatMap(), language, country);
     }
 
+    @MetadataProvider(NumberFormatMetadataGenerator.class)
     private static native ResourceMap<StringResource> getNumberFormatMap();
 
-    public static String resolveDecimalFormat(String language, String country) {
-        return resolveFormatSymbols(getDecimalFormatMap(), language, country);
-    }
-
-    private static native ResourceMap<StringResource> getDecimalFormatMap();
-
     public static String resolvePercentFormat(String language, String country) {
         return resolveFormatSymbols(getPercentFormatMap(), language, country);
     }
 
+    @MetadataProvider(NumberFormatMetadataGenerator.class)
     private static native ResourceMap<StringResource> getPercentFormatMap();
 
+    public static String resolveCurrencyFormat(String language, String country) {
+        return resolveFormatSymbols(getCurrencyFormatMap(), language, country);
+    }
+
+    @MetadataProvider(NumberFormatMetadataGenerator.class)
+    private static native ResourceMap<StringResource> getCurrencyFormatMap();
+
     private static DateFormatCollection resolveDateFormats(ResourceMap<DateFormatCollection> map,
             String language, String country) {
         String localeCode = getCode(language, country);

teavm-classlib/src/main/java/org/teavm/classlib/impl/unicode/CLDRLocale.java

@@ -39,6 +39,9 @@ public class CLDRLocale {
     CLDRDateFormats dateTimeFormats;
     CLDRTimeZone[] timeZones;
     CLDRDecimalData decimalData = new CLDRDecimalData();
+    String numberFormat;
+    String percentFormat;
+    String currencyFormat;
 
     public Map<String, String> getLanguages() {
         return Collections.unmodifiableMap(languages);
@@ -95,4 +98,16 @@ public class CLDRLocale {
     public CLDRDecimalData getDecimalData() {
         return decimalData;
     }
+
+    public String getNumberFormat() {
+        return numberFormat;
+    }
+
+    public String getPercentFormat() {
+        return percentFormat;
+    }
+
+    public String getCurrencyFormat() {
+        return currencyFormat;
+    }
 }

teavm-classlib/src/main/java/org/teavm/classlib/impl/unicode/CLDRReader.java

@@ -225,6 +225,15 @@ public class CLDRReader {
         locale.decimalData.perMille = symbolsJson.get("perMille").getAsString().charAt(0);
         locale.decimalData.infinity = symbolsJson.get("infinity").getAsString();
         locale.decimalData.NaN = symbolsJson.get("nan").getAsString();
+
+        JsonObject numberJson = numbersJson.get("decimalFormats-numberSystem-" + numbering).getAsJsonObject();
+        locale.numberFormat = numberJson.get("standard").getAsString();
+
+        JsonObject percentJson = numbersJson.get("percentFormats-numberSystem-" + numbering).getAsJsonObject();
+        locale.percentFormat = percentJson.get("standard").getAsString();
+
+        JsonObject currencyJson = numbersJson.get("currencyFormats-numberSystem-" + numbering).getAsJsonObject();
+        locale.currencyFormat = currencyJson.get("standard").getAsString();
     }
 
     private void readEras(String localeCode, CLDRLocale locale, JsonObject root) {

teavm-classlib/src/main/java/org/teavm/classlib/impl/unicode/DefaultLocaleMetadataGenerator.java

@@ -29,7 +29,7 @@ public class DefaultLocaleMetadataGenerator implements MetadataGenerator {
     @Override
     public Resource generateMetadata(MetadataGeneratorContext context, MethodReference method) {
         StringResource result = context.createResource(StringResource.class);
-        result.setValue(context.getProperties().getProperty("java.util.Locale.default", "en_EN"));
+        result.setValue(context.getProperties().getProperty("java.util.Locale.default", "en_GB"));
         return result;
     }
 }

teavm-classlib/src/main/java/org/teavm/classlib/impl/unicode/NumberFormatMetadataGenerator.java

@@ -0,0 +1,72 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  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 org.teavm.classlib.impl.unicode;
+
+import java.util.Map;
+import org.teavm.model.MethodReference;
+import org.teavm.platform.metadata.MetadataGenerator;
+import org.teavm.platform.metadata.MetadataGeneratorContext;
+import org.teavm.platform.metadata.Resource;
+import org.teavm.platform.metadata.ResourceMap;
+import org.teavm.platform.metadata.StringResource;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public class NumberFormatMetadataGenerator implements MetadataGenerator {
+    @Override
+    public Resource generateMetadata(MetadataGeneratorContext context, MethodReference method) {
+        CLDRReader reader = context.getService(CLDRReader.class);
+        ResourceMap<StringResource> result = context.createResourceMap();
+        FormatAccessor accessor;
+        switch (method.getName()) {
+            case "getNumberFormatMap":
+                accessor = new FormatAccessor() {
+                    @Override public String getFormat(CLDRLocale locale) {
+                        return locale.numberFormat;
+                    }
+                };
+                break;
+            case "getCurrencyFormatMap":
+                accessor = new FormatAccessor() {
+                    @Override public String getFormat(CLDRLocale locale) {
+                        return locale.currencyFormat;
+                    }
+                };
+                break;
+            case "getPercentFormatMap":
+                accessor = new FormatAccessor() {
+                    @Override public String getFormat(CLDRLocale locale) {
+                        return locale.percentFormat;
+                    }
+                };
+                break;
+            default:
+                throw new AssertionError();
+        }
+        for (Map.Entry<String, CLDRLocale> entry : reader.getKnownLocales().entrySet()) {
+            StringResource format = context.createResource(StringResource.class);
+            format.setValue(accessor.getFormat(entry.getValue()));
+            result.put(entry.getKey(), format);
+        }
+        return result;
+    }
+
+    interface FormatAccessor {
+        String getFormat(CLDRLocale locale);
+    }
+}

teavm-classlib/src/main/java/org/teavm/classlib/java/text/TDecimalFormat.java

@@ -51,7 +51,7 @@ public class TDecimalFormat extends TNumberFormat {
     int exponentDigits;
 
     public TDecimalFormat() {
-        this(CLDRHelper.resolveDecimalFormat(TLocale.getDefault().getLanguage(), TLocale.getDefault().getCountry()));
+        this(CLDRHelper.resolveNumberFormat(TLocale.getDefault().getLanguage(), TLocale.getDefault().getCountry()));
     }
 
     public TDecimalFormat(String pattern) {
@@ -1227,9 +1227,13 @@ public class TDecimalFormat extends TNumberFormat {
     static class CurrencyField implements FormatField {
         @Override
         public void render(TDecimalFormat format, StringBuffer buffer) {
+            if (format.getCurrency() == null) {
+                buffer.append('¤');
+            } else {
                 buffer.append(format.getCurrency().getSymbol(format.symbols.getLocale()));
             }
         }
+    }
 
     static class PercentField implements FormatField {
         @Override

teavm-classlib/src/main/java/org/teavm/classlib/java/text/TNumberFormat.java

@@ -106,6 +106,9 @@ public abstract class TNumberFormat extends TFormat {
         String pattern = CLDRHelper.resolveNumberFormat(locale.getLanguage(), locale.getCountry());
         TDecimalFormat format = new TDecimalFormat(pattern, new TDecimalFormatSymbols(locale));
         format.setParseIntegerOnly(true);
+        format.setMinimumFractionDigits(0);
+        format.setMaximumFractionDigits(0);
+        format.setDecimalSeparatorAlwaysShown(false);
         return format;
     }
 
@@ -138,7 +141,7 @@ public abstract class TNumberFormat extends TFormat {
     }
 
     public static TNumberFormat getNumberInstance(TLocale locale) {
-        String pattern = CLDRHelper.resolveDecimalFormat(locale.getLanguage(), locale.getCountry());
+        String pattern = CLDRHelper.resolveNumberFormat(locale.getLanguage(), locale.getCountry());
         return new TDecimalFormat(pattern, new TDecimalFormatSymbols(locale));
     }
 
@@ -151,6 +154,15 @@ public abstract class TNumberFormat extends TFormat {
         return new TDecimalFormat(pattern, new TDecimalFormatSymbols(locale));
     }
 
+    public final static TNumberFormat getCurrencyInstance() {
+        return getCurrencyInstance(TLocale.getDefault());
+    }
+
+    public final static TNumberFormat getCurrencyInstance(TLocale locale) {
+        String pattern = CLDRHelper.resolveCurrencyFormat(locale.getLanguage(), locale.getCountry());
+        return new TDecimalFormat(pattern, new TDecimalFormatSymbols(locale));
+    }
+
     @Override
     public int hashCode() {
         return (groupingUsed ? 1231 : 1237) + (parseIntegerOnly ? 1231 : 1237)

teavm-tests/src/test/java/org/teavm/classlib/java/text/NumberFormatTest.java

@@ -0,0 +1,44 @@
+package org.teavm.classlib.java.text;
+
+import static org.junit.Assert.*;
+import java.text.NumberFormat;
+import java.util.Currency;
+import java.util.Locale;
+import org.junit.Ignore;
+import org.junit.Test;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public class NumberFormatTest {
+    @Test
+    public void formatsNumber() {
+        NumberFormat format = NumberFormat.getNumberInstance(new Locale("en"));
+        assertEquals("123,456.789", format.format(123456.789123));
+
+        format = NumberFormat.getNumberInstance(new Locale("ru"));
+        assertEquals("123\u00A0456,789", format.format(123456.789123));
+    }
+
+    @Test
+    public void formatsCurrency() {
+        NumberFormat format = NumberFormat.getCurrencyInstance(new Locale("en", "US"));
+        format.setCurrency(Currency.getInstance("RUB"));
+        assertEquals("RUB123,456.79", format.format(123456.789123));
+
+        format = NumberFormat.getCurrencyInstance(new Locale("ru", "RU"));
+        format.setCurrency(Currency.getInstance("RUB"));
+        assertEquals("123 456,79 руб.", format.format(123456.789123).replace('\u00A0', ' '));
+    }
+
+    @Test
+    @Ignore
+    public void formatsPercent() {
+        NumberFormat format = NumberFormat.getPercentInstance(new Locale("en", "US"));
+        assertEquals("12,345,679%", format.format(123456.789123));
+
+        format = NumberFormat.getPercentInstance(new Locale("ru", "RU"));
+        assertEquals("12 345 679 %", format.format(123456.789123).replace('\u00A0', ' '));
+    }
+}