| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.jclouds.date.internal; |
| import static org.jclouds.date.internal.DateUtils.findTZ; |
| import static org.jclouds.date.internal.DateUtils.trimTZ; |
| import static org.jclouds.date.internal.DateUtils.trimToMillis; |
| |
| import java.text.ParseException; |
| import java.text.SimpleDateFormat; |
| import java.util.Date; |
| import java.util.Locale; |
| import java.util.SimpleTimeZone; |
| |
| import org.jclouds.date.DateService; |
| |
| /** |
| * |
| * uses {@link SimpleDateFormat} internally. |
| */ |
| public class SimpleDateFormatDateService implements DateService { |
| |
| /* |
| * Use default Java Date/SimpleDateFormat classes for date manipulation, but be *very* careful to |
| * guard against the lack of thread safety. |
| */ |
| // @GuardedBy("this") |
| private static final SimpleDateFormat iso8601SecondsSimpleDateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ", Locale.US); |
| |
| // @GuardedBy("this") |
| private static final SimpleDateFormat iso8601SimpleDateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ", Locale.US); |
| |
| // @GuardedBy("this") |
| private static final SimpleDateFormat rfc822SimpleDateFormat = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss 'GMT'", Locale.US); |
| |
| // See http://stackoverflow.com/questions/10584647/simpledateformat-parse-is-one-hour-out-using-rfc-1123-gmt-in-summer |
| // for why not using "zzz" |
| // @GuardedBy("this") |
| private static final SimpleDateFormat rfc1123SimpleDateFormat = new SimpleDateFormat("EEE, dd MMM yyyyy HH:mm:ss Z", Locale.US); |
| |
| // @GuardedBy("this") |
| private static final SimpleDateFormat cSimpleDateFormat = new SimpleDateFormat("EEE MMM dd HH:mm:ss Z yyyy", Locale.US); |
| |
| static { |
| iso8601SimpleDateFormat.setTimeZone(new SimpleTimeZone(0, "GMT")); |
| iso8601SecondsSimpleDateFormat.setTimeZone(new SimpleTimeZone(0, "GMT")); |
| rfc822SimpleDateFormat.setTimeZone(new SimpleTimeZone(0, "GMT")); |
| cSimpleDateFormat.setTimeZone(new SimpleTimeZone(0, "GMT")); |
| } |
| |
| @Override |
| public final String cDateFormat(Date date) { |
| synchronized (cSimpleDateFormat) { |
| return cSimpleDateFormat.format(date); |
| } |
| } |
| |
| @Override |
| public final String cDateFormat() { |
| return cDateFormat(new Date()); |
| } |
| |
| @Override |
| public final Date cDateParse(String toParse) { |
| synchronized (cSimpleDateFormat) { |
| try { |
| return cSimpleDateFormat.parse(toParse); |
| } catch (ParseException pe) { |
| throw new IllegalArgumentException("Error parsing data at " + pe.getErrorOffset(), pe); |
| } |
| } |
| } |
| |
| @Override |
| public final String rfc822DateFormat(Date date) { |
| synchronized (rfc822SimpleDateFormat) { |
| return rfc822SimpleDateFormat.format(date); |
| } |
| } |
| |
| @Override |
| public final String rfc822DateFormat() { |
| return rfc822DateFormat(new Date()); |
| } |
| |
| @Override |
| public final Date rfc822DateParse(String toParse) { |
| synchronized (rfc822SimpleDateFormat) { |
| try { |
| return rfc822SimpleDateFormat.parse(toParse); |
| } catch (ParseException pe) { |
| throw new IllegalArgumentException("Error parsing data at " + pe.getErrorOffset(), pe); |
| } |
| } |
| } |
| |
| @Override |
| public final String iso8601SecondsDateFormat() { |
| return iso8601SecondsDateFormat(new Date()); |
| } |
| |
| @Override |
| public final String iso8601DateFormat(Date date) { |
| synchronized (iso8601SimpleDateFormat) { |
| String parsed = iso8601SimpleDateFormat.format(date); |
| String tz = findTZ(parsed); |
| if (tz.equals("+0000")) { |
| parsed = trimTZ(parsed) + "Z"; |
| } |
| return parsed; |
| } |
| } |
| |
| @Override |
| public final String iso8601DateFormat() { |
| return iso8601DateFormat(new Date()); |
| } |
| |
| @Override |
| public final Date iso8601DateParse(String toParse) { |
| if (toParse.length() < 10) |
| throw new IllegalArgumentException("incorrect date format " + toParse); |
| String tz = findTZ(toParse); |
| toParse = trimToMillis(toParse); |
| toParse = trimTZ(toParse); |
| toParse += tz; |
| if (toParse.charAt(10) == ' ') |
| toParse = new StringBuilder(toParse).replace(10, 11, "T").toString(); |
| synchronized (iso8601SimpleDateFormat) { |
| try { |
| return iso8601SimpleDateFormat.parse(toParse); |
| } catch (ParseException pe) { |
| throw new IllegalArgumentException("Error parsing data at " + pe.getErrorOffset(), pe); |
| } |
| } |
| } |
| |
| @Override |
| public final Date iso8601SecondsDateParse(String toParse) |
| throws IllegalArgumentException { |
| if (toParse.length() < 10) |
| throw new IllegalArgumentException("incorrect date format " + toParse); |
| String tz = findTZ(toParse); |
| toParse = trimToMillis(toParse); |
| toParse = trimTZ(toParse); |
| toParse += tz; |
| if (toParse.charAt(10) == ' ') |
| toParse = new StringBuilder(toParse).replace(10, 11, "T").toString(); |
| synchronized (iso8601SecondsSimpleDateFormat) { |
| try { |
| return iso8601SecondsSimpleDateFormat.parse(toParse); |
| } catch (ParseException pe) { |
| throw new IllegalArgumentException("Error parsing data at " + pe.getErrorOffset(), pe); |
| } |
| } |
| } |
| |
| @Override |
| @SuppressWarnings("UnusedException") |
| public Date iso8601DateOrSecondsDateParse(String toParse) |
| throws IllegalArgumentException { |
| try { |
| return iso8601DateParse(toParse); |
| } catch (IllegalArgumentException orig) { |
| try { |
| return iso8601SecondsDateParse(toParse); |
| } catch (IllegalArgumentException ignored) { |
| throw orig; |
| } |
| } |
| } |
| |
| @Override |
| public String iso8601SecondsDateFormat(Date date) { |
| synchronized (iso8601SecondsSimpleDateFormat) { |
| String parsed = iso8601SecondsSimpleDateFormat.format(date); |
| String tz = findTZ(parsed); |
| if (tz.equals("+0000")) { |
| parsed = trimTZ(parsed) + "Z"; |
| } |
| return parsed; |
| } |
| } |
| |
| @Override |
| public final String rfc1123DateFormat(Date date) { |
| synchronized (rfc1123SimpleDateFormat) { |
| return rfc1123SimpleDateFormat.format(date); |
| } |
| } |
| |
| @Override |
| public final String rfc1123DateFormat() { |
| return rfc1123DateFormat(new Date()); |
| } |
| |
| @Override |
| public final Date rfc1123DateParse(String toParse) throws IllegalArgumentException { |
| synchronized (rfc1123SimpleDateFormat) { |
| try { |
| return rfc1123SimpleDateFormat.parse(toParse); |
| } catch (ParseException pe) { |
| throw new IllegalArgumentException("Error parsing data at " + pe.getErrorOffset(), pe); |
| } |
| } |
| } |
| } |