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/*
* Copyright 2015 The Baseio 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 com.firenio.baseio.common;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;
public class DateUtil {
private static final ThreadLocal dateUtils = new ThreadLocal<>();
private static final String[] MONTHS = new String[] { "Jan", "Feb", "Mar",
"Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
private static final byte[][] MONTHS_BYTES = new byte[][] { "Jan".getBytes(),
"Feb".getBytes(), "Mar".getBytes(), "Apr".getBytes(), "May".getBytes(),
"Jun".getBytes(), "Jul".getBytes(), "Aug".getBytes(), "Sep".getBytes(),
"Oct".getBytes(), "Nov".getBytes(), "Dec".getBytes() };
private static final byte[] NS = new byte[10];
private static final TimeZone TZ = TimeZone.getDefault();
private static final byte TZ_0;
private static final byte TZ_1;
private static final byte TZ_2;
private static final String TZ_NAME;
private static final String[] WEEK_DAYS = new String[] { "", "Sun", "Mon",
"Tue", "Wed", "Thu", "Fri", "Sat" };
private static final byte[][] WEEK_DAYS_BYTES = new byte[][] { "".getBytes(),
"Sun".getBytes(), "Mon".getBytes(), "Tue".getBytes(), "Wed".getBytes(),
"Thu".getBytes(), "Fri".getBytes(), "Sat".getBytes() };
static {
boolean daylight = (Calendar.getInstance().get(Calendar.DST_OFFSET) != 0);
TZ_NAME = TZ.getDisplayName(daylight, TimeZone.SHORT, Locale.getDefault());
TZ_0 = (byte) TZ_NAME.charAt(0);
TZ_1 = (byte) TZ_NAME.charAt(1);
TZ_2 = (byte) TZ_NAME.charAt(2);
for (int i = 0; i < NS.length; i++) {
NS[i] = (byte) String.valueOf(i).charAt(0);
}
}
private Calendar calendar = Calendar.getInstance(TZ);
private final DateFormat HH_mm_ss = new SimpleDateFormat("HH:mm:ss");
private final DateFormat yyMMdd = new SimpleDateFormat("yyMMdd");
private final DateFormat yyyy_MM_dd = new SimpleDateFormat("yyyy-MM-dd");
private final DateFormat yyyy_MM_dd_HH_mm_ss = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
private final DateFormat yyyy_MM_dd_HH_mm_ss_SSS = new SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss.SSS");
private final DateFormat yyyyMMdd = new SimpleDateFormat("yyyyMMdd");
private final DateFormat yyyyMMdd_HH_mm_ss = new SimpleDateFormat("yyyyMMdd HH:mm:ss");
private final DateFormat yyyyMMddHHmmss = new SimpleDateFormat("yyyyMMddHHmmss");
public String formatHH_mm_ss() {
return formatHH_mm_ss(new Date());
}
public String formatHH_mm_ss(Date date) {
return HH_mm_ss.format(date);
}
public String formatHttp() {
return formatHttp(System.currentTimeMillis());
}
public String formatHttp(long time) {
calendar.setTimeInMillis(time);
calendar.setTimeZone(TZ);
int weekDay = calendar.get(Calendar.DAY_OF_WEEK);
int month = calendar.get(Calendar.MONTH);
int day = calendar.get(Calendar.DAY_OF_MONTH);
int year = calendar.get(Calendar.YEAR);
int hour = calendar.get(Calendar.HOUR_OF_DAY);
int minute = calendar.get(Calendar.MINUTE);
int second = calendar.get(Calendar.SECOND);
StringBuilder b = new StringBuilder(26);
b.append(WEEK_DAYS[weekDay]);
b.append(',');
b.append(' ');
if (day < 10) {
b.append('0');
}
b.append(day);
b.append(' ');
b.append(MONTHS[month]);
b.append(' ');
b.append(year);
b.append(' ');
if (hour < 10) {
b.append('0');
}
b.append(hour);
b.append(':');
if (minute < 10) {
b.append('0');
}
b.append(minute);
b.append(':');
if (second < 10) {
b.append('0');
}
b.append(second);
b.append(" ");
b.append(TZ_NAME);
return b.toString();
}
public byte[] formatHttpBytes() {
return formatHttpBytes(System.currentTimeMillis());
}
public byte[] formatHttpBytes(long time) {
calendar.setTimeInMillis(time);
int weekDay = calendar.get(Calendar.DAY_OF_WEEK);
int month = calendar.get(Calendar.MONTH);
int day = calendar.get(Calendar.DAY_OF_MONTH);
int year = calendar.get(Calendar.YEAR);
int hour = calendar.get(Calendar.HOUR_OF_DAY);
int minute = calendar.get(Calendar.MINUTE);
int second = calendar.get(Calendar.SECOND);
byte[] b = new byte[29];
byte[] days = WEEK_DAYS_BYTES[weekDay];
byte[] months = MONTHS_BYTES[month];
b[0] = days[0];
b[1] = days[1];
b[2] = days[2];
b[3] = ',';
b[4] = ' ';
b[5] = NS[day / 10];
b[6] = NS[day % 10];
b[7] = ' ';
b[8] = months[0];
b[9] = months[1];
b[10] = months[2];
b[11] = ' ';
b[12] = NS[year / 1000];
b[13] = NS[(year / 100) % 10];
b[14] = NS[(year / 10) % 10];
b[15] = NS[year % 10];
b[16] = ' ';
b[17] = NS[hour / 10];
b[18] = NS[hour % 10];
b[19] = ':';
b[20] = NS[minute / 10];
b[21] = NS[minute % 10];
b[22] = ':';
b[23] = NS[second / 10];
b[24] = NS[second % 10];
b[25] = ' ';
b[26] = TZ_0;
b[27] = TZ_1;
b[28] = TZ_2;
return b;
}
public String formatYyMMdd() {
return formatYyMMdd(new Date());
}
public String formatYyMMdd(Date date) {
return yyMMdd.format(date);
}
public String formatYyyy_MM_dd() {
return formatYyyy_MM_dd(new Date());
}
public String formatYyyy_MM_dd(Date date) {
return yyyy_MM_dd.format(date);
}
// --------------------------------------------------------------------------------
public String formatYyyy_MM_dd_HH_mm_ss() {
return formatYyyy_MM_dd_HH_mm_ss(new Date());
}
public String formatYyyy_MM_dd_HH_mm_ss(Date date) {
return yyyy_MM_dd_HH_mm_ss.format(date);
}
public String formatYyyy_MM_dd_HH_mm_ss_SSS() {
return formatYyyy_MM_dd_HH_mm_ss_SSS(new Date());
}
public String formatYyyy_MM_dd_HH_mm_ss_SSS(Date date) {
return yyyy_MM_dd_HH_mm_ss_SSS.format(date);
}
public String formatYyyyMMdd() {
return formatYyyyMMdd(new Date());
}
public String formatYyyyMMdd(Date date) {
return yyyyMMdd.format(date);
}
public String formatYyyyMMdd_HH_mm_ss() {
return formatYyyyMMdd_HH_mm_ss(new Date());
}
public String formatYyyyMMdd_HH_mm_ss(Date date) {
return yyyyMMdd_HH_mm_ss.format(date);
}
// --------------------------------------------------------------------------------
public String formatYyyyMMddHHmmss() {
return formatYyyyMMddHHmmss(new Date());
}
public String formatYyyyMMddHHmmss(Date date) {
return yyyyMMddHHmmss.format(date);
}
private int getMonth(String month, int begin, int end) {
char c1 = month.charAt(begin);
char c2 = month.charAt(begin + 1);
char c3 = month.charAt(begin + 2);
int c = (c1 << 16) | (c2 << 8) | c3;
switch (c) {
case ('J' << 16) | ('a' << 8) | ('n'):
return 0;
case ('F' << 16) | ('e' << 8) | ('b'):
return 1;
case ('M' << 16) | ('a' << 8) | ('r'):
return 2;
case ('A' << 16) | ('p' << 8) | ('r'):
return 3;
case ('M' << 16) | ('a' << 8) | ('y'):
return 4;
case ('J' << 16) | ('u' << 8) | ('n'):
return 5;
case ('J' << 16) | ('u' << 8) | ('l'):
return 6;
case ('A' << 16) | ('u' << 8) | ('g'):
return 7;
case ('S' << 16) | ('e' << 8) | ('p'):
return 8;
case ('O' << 16) | ('c' << 8) | ('t'):
return 9;
case ('N' << 16) | ('o' << 8) | ('v'):
return 10;
case ('D' << 16) | ('e' << 8) | ('v'):
return 11;
default:
return -1;
}
}
public Date parseHH_mm_ss(String source) {
try {
return HH_mm_ss.parse(source);
} catch (ParseException e) {
throw new RuntimeException(e);
}
}
public Date parseHttp(String source) {
int day = parseInt(source, 5, 7);
int year = parseInt(source, 12, 16);
int hour = parseInt(source, 17, 19);
int minute = parseInt(source, 20, 22);
int second = parseInt(source, 23, 25);
int month = getMonth(source, 8, 11);
Calendar calendar = Calendar.getInstance(TZ);
calendar.set(Calendar.YEAR, year);
calendar.set(Calendar.MONTH, month);
calendar.set(Calendar.DAY_OF_MONTH, day);
calendar.set(Calendar.HOUR_OF_DAY, hour);
calendar.set(Calendar.MINUTE, minute);
calendar.set(Calendar.SECOND, second);
calendar.set(Calendar.MILLISECOND, 0);
return calendar.getTime();
}
private int parseInt(String cs, int begin, int end) {
int sum = 0;
for (int i = begin; i < end; i++) {
sum = sum * 10 + (cs.charAt(i) - 48);
}
return sum;
}
public Date parseYyMMdd(String source) {
try {
return yyMMdd.parse(source);
} catch (ParseException e) {
throw new RuntimeException(e);
}
}
public Date parseYyyy_MM_dd(String source) {
try {
return yyyy_MM_dd.parse(source);
} catch (ParseException e) {
throw new RuntimeException(e);
}
}
public Date parseYyyy_MM_dd_HH_mm_ss(String source) {
try {
return yyyy_MM_dd_HH_mm_ss.parse(source);
} catch (ParseException e) {
throw new RuntimeException(e);
}
}
public Date parseYyyy_MM_dd_HH_mm_ss_SSS(String source) {
try {
return yyyy_MM_dd_HH_mm_ss_SSS.parse(source);
} catch (ParseException e) {
throw new RuntimeException(e);
}
}
public Date parseYyyyMMdd(String source) {
try {
return yyyyMMdd.parse(source);
} catch (ParseException e) {
throw new RuntimeException(e);
}
}
public Date parseYyyyMMdd_HH_mm_ss(String source) {
try {
return yyyyMMdd_HH_mm_ss.parse(source);
} catch (ParseException e) {
throw new RuntimeException(e);
}
}
public Date parseYyyyMMddHHmmss(String source) {
try {
return yyyyMMddHHmmss.parse(source);
} catch (ParseException e) {
throw new RuntimeException(e);
}
}
public static DateUtil get() {
DateUtil d = dateUtils.get();
if (d == null) {
d = new DateUtil();
dateUtils.set(d);
}
return d;
}
public static void main(String[] args) {
Date d = new Date();
System.out.println(DateUtil.get().formatYyyy_MM_dd_HH_mm_ss(d));
String str = get().formatHttp(d.getTime());
System.out.println(str);
d = get().parseHttp(str);
System.out.println(DateUtil.get().formatYyyy_MM_dd_HH_mm_ss(d));
System.out.println(new String(get().formatHttpBytes()));
System.out.println(get().formatYyyy_MM_dd_HH_mm_ss(d));
System.out.println(TZ);
}
}