| /* |
| * 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.apache.vysper.xmpp.datetime; |
| |
| import static org.apache.vysper.compliance.SpecCompliant.ComplianceCoverage.COMPLETE; |
| import static org.apache.vysper.compliance.SpecCompliant.ComplianceStatus.IN_PROGRESS; |
| |
| import java.time.ZonedDateTime; |
| import java.util.Calendar; |
| import java.util.Date; |
| import java.util.TimeZone; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| import org.apache.commons.lang.time.FastDateFormat; |
| import org.apache.vysper.compliance.SpecCompliant; |
| |
| /** |
| * provides dates and times in XMPP conformant formats |
| */ |
| @SpecCompliant(spec = "XEP-0082", status = IN_PROGRESS, coverage = COMPLETE) |
| public class DateTimeProfile { |
| |
| protected static final TimeZone TIME_ZONE_UTC; |
| |
| protected static final FastDateFormat utcDateFormatter; |
| |
| protected static final FastDateFormat utcDateTimeFormatter; |
| |
| protected static final FastDateFormat utcTimeFormatter; |
| |
| private static final String DATE_PATTERN_VALUE = "(\\d\\d\\d\\d)-(\\d\\d)-(\\d\\d)"; |
| |
| private static final String TIME_PATTERN_VALUE = "(\\d\\d):(\\d\\d):(\\d\\d)"; |
| |
| private static final String TZ_PATTERN_VALUE = "(([+-]\\d\\d:\\d\\d)|Z)"; |
| |
| // time zone is required for date times |
| private static final Pattern DATE_TIME_PATTERN = Pattern.compile("^" + DATE_PATTERN_VALUE + "T" |
| + TIME_PATTERN_VALUE + TZ_PATTERN_VALUE + "$"); |
| |
| private static final Pattern DATE_PATTERN = Pattern.compile("^" + DATE_PATTERN_VALUE + "$"); |
| |
| // time zone is optional for times |
| private static final Pattern TIME_PATTERN = Pattern.compile("^" + TIME_PATTERN_VALUE + TZ_PATTERN_VALUE + "?$"); |
| |
| static { |
| TIME_ZONE_UTC = TimeZone.getTimeZone("UTC"); |
| utcDateTimeFormatter = FastDateFormat.getInstance("yyyy-MM-dd'T'HH:mm:ss'Z'", TIME_ZONE_UTC); |
| utcDateFormatter = FastDateFormat.getInstance("yyyy-MM-dd", TIME_ZONE_UTC); |
| utcTimeFormatter = FastDateFormat.getInstance("HH:mm:ss'Z'", TIME_ZONE_UTC); |
| } |
| |
| private final static DateTimeProfile SINGLETON = new DateTimeProfile(); |
| |
| public static DateTimeProfile getInstance() { |
| return SINGLETON; |
| } |
| |
| protected DateTimeProfile() { |
| // empty |
| } |
| |
| public String getDateTimeInUTC(Date time) { |
| return utcDateTimeFormatter.format(time); |
| } |
| |
| public String getDateTimeInUTC(ZonedDateTime dateTime){ |
| return getDateTimeInUTC(Date.from(dateTime.toInstant())); |
| } |
| |
| public String getDateInUTC(Date time) { |
| return utcDateFormatter.format(time); |
| } |
| |
| public String getTimeInUTC(Date time) { |
| return utcTimeFormatter.format(time); |
| } |
| |
| /** |
| * Parses a date time compliant with ISO-8601 and XEP-0082. |
| * @param time The date time string |
| * @return A {@link Calendar} representing the date time, in the |
| * time zone specified by the input string |
| * @throws IllegalArgumentException If the input string is not a valid date time |
| * e.g. the time zone is missing |
| */ |
| public Calendar fromDateTime(String time) { |
| Matcher matcher = DATE_TIME_PATTERN.matcher(time); |
| |
| if (matcher.find()) { |
| int year = Integer.valueOf(matcher.group(1)); |
| int month = Integer.valueOf(matcher.group(2)); |
| int day = Integer.valueOf(matcher.group(3)); |
| int hour = Integer.valueOf(matcher.group(4)); |
| int minute = Integer.valueOf(matcher.group(5)); |
| int second = Integer.valueOf(matcher.group(6)); |
| String tzValue = matcher.group(7); |
| TimeZone tz; |
| if (tzValue.equals("Z")) { |
| tz = TIME_ZONE_UTC; |
| } else { |
| tz = TimeZone.getTimeZone("GMT" + tzValue); |
| } |
| Calendar calendar = Calendar.getInstance(tz); |
| calendar.clear(); |
| calendar.set(year, month - 1, day, hour, minute, second); |
| return calendar; |
| } else { |
| throw new IllegalArgumentException("Invalid date time: " + time); |
| } |
| } |
| |
| public ZonedDateTime fromZonedDateTime(String time){ |
| Calendar calendar = fromDateTime(time); |
| return ZonedDateTime.ofInstant(calendar.toInstant(), calendar.getTimeZone().toZoneId()); |
| } |
| |
| /** |
| * Parses a time, compliant with ISO-8601 and XEP-0082. |
| * @param time The time string |
| * @return A {@link Calendar} representing the time, in the |
| * time zone specified by the input string. If a time zone is not specified |
| * in the input string, the returned {@link Calendar} will be in the UTC time zone |
| * @throws IllegalArgumentException If the input string is not a valid time |
| */ |
| public Calendar fromTime(String time) { |
| Matcher matcher = TIME_PATTERN.matcher(time); |
| |
| if (matcher.find()) { |
| int hour = Integer.valueOf(matcher.group(1)); |
| int minute = Integer.valueOf(matcher.group(2)); |
| int second = Integer.valueOf(matcher.group(3)); |
| String tzValue = matcher.group(4); |
| TimeZone tz; |
| if (tzValue == null || tzValue.equals("Z")) { |
| tz = TIME_ZONE_UTC; |
| } else { |
| tz = TimeZone.getTimeZone("GMT" + tzValue); |
| } |
| Calendar calendar = Calendar.getInstance(tz); |
| calendar.clear(); |
| calendar.set(Calendar.HOUR_OF_DAY, hour); |
| calendar.set(Calendar.MINUTE, minute); |
| calendar.set(Calendar.SECOND, second); |
| return calendar; |
| } else { |
| throw new IllegalArgumentException("Invalid date time: " + time); |
| } |
| } |
| |
| /** |
| * Parses a date, compliant with ISO-8601 and XEP-0082. |
| * @param time The date string |
| * @return A {@link Calendar} representing the date |
| * @throws IllegalArgumentException If the input string is not a valid date |
| */ |
| public Calendar fromDate(String time) { |
| Matcher matcher = DATE_PATTERN.matcher(time); |
| |
| if (matcher.find()) { |
| int year = Integer.valueOf(matcher.group(1)); |
| int month = Integer.valueOf(matcher.group(2)); |
| int day = Integer.valueOf(matcher.group(3)); |
| |
| Calendar calendar = Calendar.getInstance(TIME_ZONE_UTC); |
| calendar.clear(); |
| calendar.set(year, month - 1, day); |
| return calendar; |
| } else { |
| throw new IllegalArgumentException("Invalid date time: " + time); |
| } |
| } |
| } |