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/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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 libcore.icu;
import com.ibm.icu.text.DateFormat;
import com.ibm.icu.text.DateTimePatternGenerator;
import com.ibm.icu.text.DisplayContext;
import com.ibm.icu.text.SimpleDateFormat;
import com.ibm.icu.util.Calendar;
import com.ibm.icu.util.ULocale;
import libcore.util.BasicLruCache;
/**
* A formatter that outputs a single date/time.
*/
public class DateTimeFormat {
private static final FormatterCache CACHED_FORMATTERS = new FormatterCache();
static class FormatterCache extends BasicLruCache<String, DateFormat> {
FormatterCache() {
super(8);
}
}
private DateTimeFormat() {
}
public static String format(ULocale icuLocale, Calendar time, int flags,
DisplayContext displayContext) {
String skeleton = DateUtilsBridge.toSkeleton(time, flags);
String key = skeleton + "\t" + icuLocale + "\t" + time.getTimeZone();
synchronized(CACHED_FORMATTERS) {
DateFormat formatter = CACHED_FORMATTERS.get(key);
if (formatter == null) {
DateTimePatternGenerator generator = DateTimePatternGenerator.getInstance(icuLocale);
formatter = new SimpleDateFormat(generator.getBestPattern(skeleton), icuLocale);
CACHED_FORMATTERS.put(key, formatter);
}
formatter.setContext(displayContext);
return formatter.format(time);
}
}
}
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