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dragonwell8_jdk
提交 2483d502 编写于 作者: O okutsu
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4267450: (cal) API: Need public API to calculate, format and parse "year of week" 

6549953: (cal) WEEK_OF_YEAR and DAY_OF_YEAR calculation problems around Gregorian cutover
Reviewed-by: peytoia
上级 1e4cca65
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make/java/text/base/FILES_java.gmk
浏览文件 @ 2483d502
#
# Copyright (c) 1996, 2007, Oracle and/or its affiliates. All rights reserved.
# Copyright (c) 1996, 2010, Oracle and/or its affiliates. All rights reserved.
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
#
# This code is free software; you can redistribute it and/or modify it
......@@ -29,6 +29,7 @@ FILES_java = \
java/text/AttributedString.java \
java/text/BreakDictionary.java \
java/text/BreakIterator.java \
java/text/CalendarBuilder.java \
java/text/CharacterIterator.java \
java/text/CharacterIteratorFieldDelegate.java \
java/text/ChoiceFormat.java \
......
src/share/classes/java/text/CalendarBuilder.java 0 → 100644
浏览文件 @ 2483d502
/*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package java.text;
import java.util.Calendar;
import static java.util.GregorianCalendar.*;
/**
* {@code CalendarBuilder} keeps field-value pairs for setting
* the calendar fields of the given {@code Calendar}. It has the
* {@link Calendar#FIELD_COUNT FIELD_COUNT}-th field for the week year
* support. Also {@code ISO_DAY_OF_WEEK} is used to specify
* {@code DAY_OF_WEEK} in the ISO day of week numbering.
*
* <p>{@code CalendarBuilder} retains the semantic of the pseudo
* timestamp for fields. {@code CalendarBuilder} uses a single
* int array combining fields[] and stamp[] of {@code Calendar}.
*
* @author Masayoshi Okutsu
*/
class CalendarBuilder {
/*
* Pseudo time stamp constants used in java.util.Calendar
*/
private static final int UNSET = 0;
private static final int COMPUTED = 1;
private static final int MINIMUM_USER_STAMP = 2;
private static final int MAX_FIELD = FIELD_COUNT + 1;
public static final int WEEK_YEAR = FIELD_COUNT;
public static final int ISO_DAY_OF_WEEK = 1000; // pseudo field index
// stamp[] (lower half) and field[] (upper half) combined
private final int[] field;
private int nextStamp;
private int maxFieldIndex;
CalendarBuilder() {
field = new int[MAX_FIELD * 2];
nextStamp = MINIMUM_USER_STAMP;
maxFieldIndex = -1;
}
CalendarBuilder set(int index, int value) {
if (index == ISO_DAY_OF_WEEK) {
index = DAY_OF_WEEK;
value = toCalendarDayOfWeek(value);
}
field[index] = nextStamp++;
field[MAX_FIELD + index] = value;
if (index > maxFieldIndex && index < FIELD_COUNT) {
maxFieldIndex = index;
}
return this;
}
CalendarBuilder addYear(int value) {
field[MAX_FIELD + YEAR] += value;
field[MAX_FIELD + WEEK_YEAR] += value;
return this;
}
boolean isSet(int index) {
if (index == ISO_DAY_OF_WEEK) {
index = DAY_OF_WEEK;
}
return field[index] > UNSET;
}
Calendar establish(Calendar cal) {
boolean weekDate = isSet(WEEK_YEAR)
&& field[WEEK_YEAR] > field[YEAR];
if (weekDate && !cal.isWeekDateSupported()) {
// Use YEAR instead
if (!isSet(YEAR)) {
set(YEAR, field[MAX_FIELD + WEEK_YEAR]);
}
weekDate = false;
}
cal.clear();
// Set the fields from the min stamp to the max stamp so that
// the field resolution works in the Calendar.
for (int stamp = MINIMUM_USER_STAMP; stamp < nextStamp; stamp++) {
for (int index = 0; index <= maxFieldIndex; index++) {
if (field[index] == stamp) {
cal.set(index, field[MAX_FIELD + index]);
break;
}
}
}
if (weekDate) {
int weekOfYear = isSet(WEEK_OF_YEAR) ? field[MAX_FIELD + WEEK_OF_YEAR] : 1;
int dayOfWeek = isSet(DAY_OF_WEEK) ?
field[MAX_FIELD + DAY_OF_WEEK] : cal.getFirstDayOfWeek();
if (!isValidDayOfWeek(dayOfWeek) && cal.isLenient()) {
if (dayOfWeek >= 8) {
dayOfWeek--;
weekOfYear += dayOfWeek / 7;
dayOfWeek = (dayOfWeek % 7) + 1;
} else {
while (dayOfWeek <= 0) {
dayOfWeek += 7;
weekOfYear--;
}
}
dayOfWeek = toCalendarDayOfWeek(dayOfWeek);
}
cal.setWeekDate(field[MAX_FIELD + WEEK_YEAR], weekOfYear, dayOfWeek);
}
return cal;
}
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("CalendarBuilder:[");
for (int i = 0; i < field.length; i++) {
if (isSet(i)) {
sb.append(i).append('=').append(field[MAX_FIELD + i]).append(',');
}
}
int lastIndex = sb.length() - 1;
if (sb.charAt(lastIndex) == ',') {
sb.setLength(lastIndex);
}
sb.append(']');
return sb.toString();
}
static int toISODayOfWeek(int calendarDayOfWeek) {
return calendarDayOfWeek == SUNDAY ? 7 : calendarDayOfWeek - 1;
}
static int toCalendarDayOfWeek(int isoDayOfWeek) {
if (!isValidDayOfWeek(isoDayOfWeek)) {
// adjust later for lenient mode
return isoDayOfWeek;
}
return isoDayOfWeek == 7 ? SUNDAY : isoDayOfWeek + 1;
}
static boolean isValidDayOfWeek(int dayOfWeek) {
return dayOfWeek > 0 && dayOfWeek <= 7;
}
}
src/share/classes/java/text/DateFormatSymbols.java
浏览文件 @ 2483d502
/*
* Copyright (c) 1996, 2006, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1996, 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
......@@ -226,7 +226,29 @@ public class DateFormatSymbols implements Serializable, Cloneable {
* Unlocalized date-time pattern characters. For example: 'y', 'd', etc.
* All locales use the same these unlocalized pattern characters.
*/
static final String patternChars = "GyMdkHmsSEDFwWahKzZ";
static final String patternChars = "GyMdkHmsSEDFwWahKzZYu";
static final int PATTERN_ERA = 0; // G
static final int PATTERN_YEAR = 1; // y
static final int PATTERN_MONTH = 2; // M
static final int PATTERN_DAY_OF_MONTH = 3; // d
static final int PATTERN_HOUR_OF_DAY1 = 4; // k
static final int PATTERN_HOUR_OF_DAY0 = 5; // H
static final int PATTERN_MINUTE = 6; // m
static final int PATTERN_SECOND = 7; // s
static final int PATTERN_MILLISECOND = 8; // S
static final int PATTERN_DAY_OF_WEEK = 9; // E
static final int PATTERN_DAY_OF_YEAR = 10; // D
static final int PATTERN_DAY_OF_WEEK_IN_MONTH = 11; // F
static final int PATTERN_WEEK_OF_YEAR = 12; // w
static final int PATTERN_WEEK_OF_MONTH = 13; // W
static final int PATTERN_AM_PM = 14; // a
static final int PATTERN_HOUR1 = 15; // h
static final int PATTERN_HOUR0 = 16; // K
static final int PATTERN_ZONE_NAME = 17; // z
static final int PATTERN_ZONE_VALUE = 18; // Z
static final int PATTERN_WEEK_YEAR = 19; // Y
static final int PATTERN_ISO_DAY_OF_WEEK = 20; // u
/**
* Localized date-time pattern characters. For example, a locale may
......@@ -505,7 +527,7 @@ public class DateFormatSymbols implements Serializable, Cloneable {
* @return the localized date-time pattern characters.
*/
public String getLocalPatternChars() {
return new String(localPatternChars);
return localPatternChars;
}
/**
......@@ -514,7 +536,8 @@ public class DateFormatSymbols implements Serializable, Cloneable {
* pattern characters.
*/
public void setLocalPatternChars(String newLocalPatternChars) {
localPatternChars = new String(newLocalPatternChars);
// Call toString() to throw an NPE in case the argument is null
localPatternChars = newLocalPatternChars.toString();
}
/**
......@@ -699,7 +722,7 @@ public class DateFormatSymbols implements Serializable, Cloneable {
} else {
dst.zoneStrings = null;
}
dst.localPatternChars = new String (src.localPatternChars);
dst.localPatternChars = src.localPatternChars;
}
/**
......
src/share/classes/java/text/SimpleDateFormat.java
浏览文件 @ 2483d502
/*
* Copyright (c) 1996, 2008, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1996, 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
......@@ -55,6 +55,8 @@ import sun.util.calendar.CalendarUtils;
import sun.util.calendar.ZoneInfoFile;
import sun.util.resources.LocaleData;
import static java.text.DateFormatSymbols.*;
/**
* <code>SimpleDateFormat</code> is a concrete class for formatting and
* parsing dates in a locale-sensitive manner. It allows for formatting
......@@ -108,40 +110,50 @@ import sun.util.resources.LocaleData;
* <td><a href="#year">Year</a>
* <td><code>1996</code>; <code>96</code>
* <tr>
* <td><code>Y</code>
* <td>Week year
* <td><a href="#year">Year</a>
* <td><code>2009</code>; <code>09</code>
* <tr bgcolor="#eeeeff">
* <td><code>M</code>
* <td>Month in year
* <td><a href="#month">Month</a>
* <td><code>July</code>; <code>Jul</code>; <code>07</code>
* <tr bgcolor="#eeeeff">
* <tr>
* <td><code>w</code>
* <td>Week in year
* <td><a href="#number">Number</a>
* <td><code>27</code>
* <tr>
* <tr bgcolor="#eeeeff">
* <td><code>W</code>
* <td>Week in month
* <td><a href="#number">Number</a>
* <td><code>2</code>
* <tr bgcolor="#eeeeff">
* <tr>
* <td><code>D</code>
* <td>Day in year
* <td><a href="#number">Number</a>
* <td><code>189</code>
* <tr>
* <tr bgcolor="#eeeeff">
* <td><code>d</code>
* <td>Day in month
* <td><a href="#number">Number</a>
* <td><code>10</code>
* <tr bgcolor="#eeeeff">
* <tr>
* <td><code>F</code>
* <td>Day of week in month
* <td><a href="#number">Number</a>
* <td><code>2</code>
* <tr>
* <tr bgcolor="#eeeeff">
* <td><code>E</code>
* <td>Day in week
* <td>Day name in week
* <td><a href="#text">Text</a>
* <td><code>Tuesday</code>; <code>Tue</code>
* <tr>
* <td><code>u</code>
* <td>Day number of week (1 = Monday, ..., 7 = Sunday)
* <td><a href="#number">Number</a>
* <td><code>1</code>
* <tr bgcolor="#eeeeff">
* <td><code>a</code>
* <td>Am/pm marker
......@@ -202,12 +214,12 @@ import sun.util.resources.LocaleData;
* the full form is used; otherwise a short or abbreviated form
* is used if available.
* For parsing, both forms are accepted, independent of the number
* of pattern letters.
* of pattern letters.<br><br></li>
* <li><strong><a name="number">Number:</a></strong>
* For formatting, the number of pattern letters is the minimum
* number of digits, and shorter numbers are zero-padded to this amount.
* For parsing, the number of pattern letters is ignored unless
* it's needed to separate two adjacent fields.
* it's needed to separate two adjacent fields.<br><br></li>
* <li><strong><a name="year">Year:</a></strong>
* If the formatter's {@link #getCalendar() Calendar} is the Gregorian
* calendar, the following rules are applied.<br>
......@@ -239,11 +251,20 @@ import sun.util.resources.LocaleData;
* letters is 4 or more, a calendar specific {@linkplain
* Calendar#LONG long form} is used. Otherwise, a calendar
* specific {@linkplain Calendar#SHORT short or abbreviated form}
* is used.
* is used.<br>
* <br>
* If week year {@code 'Y'} is specified and the {@linkplain
* #getCalendar() calendar} doesn't support any <a
* href="../util/GregorianCalendar.html#week_year"> week
* years</a>, the calendar year ({@code 'y'}) is used instead. The
* support of week years can be tested with a call to {@link
* DateFormat#getCalendar() getCalendar()}.{@link
* java.util.Calendar#isWeekDateSupported()
* isWeekDateSupported()}.<br><br></li>
* <li><strong><a name="month">Month:</a></strong>
* If the number of pattern letters is 3 or more, the month is
* interpreted as <a href="#text">text</a>; otherwise,
* it is interpreted as a <a href="#number">number</a>.
* it is interpreted as a <a href="#number">number</a>.<br><br></li>
* <li><strong><a name="timezone">General time zone:</a></strong>
* Time zones are interpreted as <a href="#text">text</a> if they have
* names. For time zones representing a GMT offset value, the
......@@ -264,7 +285,7 @@ import sun.util.resources.LocaleData;
* 00 and 59. The format is locale independent and digits must be taken
* from the Basic Latin block of the Unicode standard.
* <p>For parsing, <a href="#rfc822timezone">RFC 822 time zones</a> are also
* accepted.
* accepted.<br><br></li>
* <li><strong><a name="rfc822timezone">RFC 822 time zone:</a></strong>
* For formatting, the RFC 822 4-digit time zone format is used:
* <pre>
......@@ -321,6 +342,9 @@ import sun.util.resources.LocaleData;
* <tr>
* <td><code>"yyyy-MM-dd'T'HH:mm:ss.SSSZ"</code>
* <td><code>2001-07-04T12:08:56.235-0700</code>
* <tr bgcolor="#eeeeff">
* <td><code>"YYYY-'W'ww-u"</code>
* <td><code>2001-W27-3</code>
* </table>
* </blockquote>
*
......@@ -877,7 +901,7 @@ public class SimpleDateFormat extends DateFormat {
* @param pos the formatting position. On input: an alignment field,
* if desired. On output: the offsets of the alignment field.
* @return the formatted date-time string.
* @exception NullPointerException if the given date is null
* @exception NullPointerException if the given {@code date} is {@code null}.
*/
public StringBuffer format(Date date, StringBuffer toAppendTo,
FieldPosition pos)
......@@ -968,7 +992,10 @@ public class SimpleDateFormat extends DateFormat {
Calendar.DAY_OF_YEAR, Calendar.DAY_OF_WEEK_IN_MONTH,
Calendar.WEEK_OF_YEAR, Calendar.WEEK_OF_MONTH,
Calendar.AM_PM, Calendar.HOUR, Calendar.HOUR, Calendar.ZONE_OFFSET,
Calendar.ZONE_OFFSET
Calendar.ZONE_OFFSET,
// Pseudo Calendar fields
CalendarBuilder.WEEK_YEAR,
CalendarBuilder.ISO_DAY_OF_WEEK
};
// Map index into pattern character string to DateFormat field number
......@@ -982,6 +1009,7 @@ public class SimpleDateFormat extends DateFormat {
DateFormat.WEEK_OF_MONTH_FIELD, DateFormat.AM_PM_FIELD,
DateFormat.HOUR1_FIELD, DateFormat.HOUR0_FIELD,
DateFormat.TIMEZONE_FIELD, DateFormat.TIMEZONE_FIELD,
DateFormat.YEAR_FIELD, DateFormat.DAY_OF_WEEK_FIELD
};
// Maps from DecimalFormatSymbols index to Field constant
......@@ -993,6 +1021,7 @@ public class SimpleDateFormat extends DateFormat {
Field.WEEK_OF_YEAR, Field.WEEK_OF_MONTH,
Field.AM_PM, Field.HOUR1, Field.HOUR0, Field.TIME_ZONE,
Field.TIME_ZONE,
Field.YEAR, Field.DAY_OF_WEEK
};
/**
......@@ -1007,9 +1036,24 @@ public class SimpleDateFormat extends DateFormat {
int beginOffset = buffer.length();
int field = PATTERN_INDEX_TO_CALENDAR_FIELD[patternCharIndex];
int value = calendar.get(field);
int value;
if (field == CalendarBuilder.WEEK_YEAR) {
if (calendar.isWeekDateSupported()) {
value = calendar.getWeekYear();
} else {
// use calendar year 'y' instead
patternCharIndex = PATTERN_YEAR;
field = PATTERN_INDEX_TO_CALENDAR_FIELD[patternCharIndex];
value = calendar.get(field);
}
} else if (field == CalendarBuilder.ISO_DAY_OF_WEEK) {
value = CalendarBuilder.toISODayOfWeek(calendar.get(Calendar.DAY_OF_WEEK));
} else {
value = calendar.get(field);
}
int style = (count >= 4) ? Calendar.LONG : Calendar.SHORT;
if (!useDateFormatSymbols) {
if (!useDateFormatSymbols && field != CalendarBuilder.ISO_DAY_OF_WEEK) {
current = calendar.getDisplayName(field, style, locale);
}
......@@ -1018,7 +1062,7 @@ public class SimpleDateFormat extends DateFormat {
// zeroPaddingNumber() must be fixed.
switch (patternCharIndex) {
case 0: // 'G' - ERA
case PATTERN_ERA: // 'G'
if (useDateFormatSymbols) {
String[] eras = formatData.getEras();
if (value < eras.length)
......@@ -1028,7 +1072,8 @@ public class SimpleDateFormat extends DateFormat {
current = "";
break;
case 1: // 'y' - YEAR
case PATTERN_WEEK_YEAR: // 'Y'
case PATTERN_YEAR: // 'y'
if (calendar instanceof GregorianCalendar) {
if (count != 2)
zeroPaddingNumber(value, count, maxIntCount, buffer);
......@@ -1042,7 +1087,7 @@ public class SimpleDateFormat extends DateFormat {
}
break;
case 2: // 'M' - MONTH
case PATTERN_MONTH: // 'M'
if (useDateFormatSymbols) {
String[] months;
if (count >= 4) {
......@@ -1062,7 +1107,7 @@ public class SimpleDateFormat extends DateFormat {
}
break;
case 4: // 'k' - HOUR_OF_DAY: 1-based. eg, 23:59 + 1 hour =>> 24:59
case PATTERN_HOUR_OF_DAY1: // 'k' 1-based. eg, 23:59 + 1 hour =>> 24:59
if (current == null) {
if (value == 0)
zeroPaddingNumber(calendar.getMaximum(Calendar.HOUR_OF_DAY)+1,
......@@ -1072,7 +1117,7 @@ public class SimpleDateFormat extends DateFormat {
}
break;
case 9: // 'E' - DAY_OF_WEEK
case PATTERN_DAY_OF_WEEK: // 'E'
if (useDateFormatSymbols) {
String[] weekdays;
if (count >= 4) {
......@@ -1085,14 +1130,14 @@ public class SimpleDateFormat extends DateFormat {
}
break;
case 14: // 'a' - AM_PM
case PATTERN_AM_PM: // 'a'
if (useDateFormatSymbols) {
String[] ampm = formatData.getAmPmStrings();
current = ampm[value];
}
break;
case 15: // 'h' - HOUR:1-based. eg, 11PM + 1 hour =>> 12 AM
case PATTERN_HOUR1: // 'h' 1-based. eg, 11PM + 1 hour =>> 12 AM
if (current == null) {
if (value == 0)
zeroPaddingNumber(calendar.getLeastMaximum(Calendar.HOUR)+1,
......@@ -1102,7 +1147,7 @@ public class SimpleDateFormat extends DateFormat {
}
break;
case 17: // 'z' - ZONE_OFFSET
case PATTERN_ZONE_NAME: // 'z'
if (current == null) {
if (formatData.locale == null || formatData.isZoneStringsSet) {
int zoneIndex =
......@@ -1129,7 +1174,7 @@ public class SimpleDateFormat extends DateFormat {
}
break;
case 18: // 'Z' - ZONE_OFFSET ("-/+hhmm" form)
case PATTERN_ZONE_VALUE: // 'Z' ("-/+hhmm" form)
value = (calendar.get(Calendar.ZONE_OFFSET) +
calendar.get(Calendar.DST_OFFSET)) / 60000;
......@@ -1145,16 +1190,17 @@ public class SimpleDateFormat extends DateFormat {
break;
default:
// case 3: // 'd' - DATE
// case 5: // 'H' - HOUR_OF_DAY:0-based. eg, 23:59 + 1 hour =>> 00:59
// case 6: // 'm' - MINUTE
// case 7: // 's' - SECOND
// case 8: // 'S' - MILLISECOND
// case 10: // 'D' - DAY_OF_YEAR
// case 11: // 'F' - DAY_OF_WEEK_IN_MONTH
// case 12: // 'w' - WEEK_OF_YEAR
// case 13: // 'W' - WEEK_OF_MONTH
// case 16: // 'K' - HOUR: 0-based. eg, 11PM + 1 hour =>> 0 AM
// case PATTERN_DAY_OF_MONTH: // 'd'
// case PATTERN_HOUR_OF_DAY0: // 'H' 0-based. eg, 23:59 + 1 hour =>> 00:59
// case PATTERN_MINUTE: // 'm'
// case PATTERN_SECOND: // 's'
// case PATTERN_MILLISECOND: // 'S'
// case PATTERN_DAY_OF_YEAR: // 'D'
// case PATTERN_DAY_OF_WEEK_IN_MONTH: // 'F'
// case PATTERN_WEEK_OF_YEAR: // 'w'
// case PATTERN_WEEK_OF_MONTH: // 'W'
// case PATTERN_HOUR0: // 'K' eg, 11PM + 1 hour =>> 0 AM
// case PATTERN_ISO_DAY_OF_WEEK: // 'u' pseudo field, Monday = 1, ..., Sunday = 7
if (current == null) {
zeroPaddingNumber(value, count, maxIntCount, buffer);
}
......@@ -1264,10 +1310,9 @@ public class SimpleDateFormat extends DateFormat {
int oldStart = start;
int textLength = text.length();
calendar.clear(); // Clears all the time fields
boolean[] ambiguousYear = {false};
CalendarBuilder calb = new CalendarBuilder();
for (int i = 0; i < compiledPattern.length; ) {
int tag = compiledPattern[i] >>> 8;
......@@ -1340,7 +1385,7 @@ public class SimpleDateFormat extends DateFormat {
}
start = subParse(text, start, tag, count, obeyCount,
ambiguousYear, pos,
useFollowingMinusSignAsDelimiter);
useFollowingMinusSignAsDelimiter, calb);
if (start < 0) {
pos.index = oldStart;
return null;
......@@ -1354,46 +1399,16 @@ public class SimpleDateFormat extends DateFormat {
pos.index = start;
// This part is a problem: When we call parsedDate.after, we compute the time.
// Take the date April 3 2004 at 2:30 am. When this is first set up, the year
// will be wrong if we're parsing a 2-digit year pattern. It will be 1904.
// April 3 1904 is a Sunday (unlike 2004) so it is the DST onset day. 2:30 am
// is therefore an "impossible" time, since the time goes from 1:59 to 3:00 am
// on that day. It is therefore parsed out to fields as 3:30 am. Then we
// add 100 years, and get April 3 2004 at 3:30 am. Note that April 3 2004 is
// a Saturday, so it can have a 2:30 am -- and it should. [LIU]
/*
Date parsedDate = calendar.getTime();
if( ambiguousYear[0] && !parsedDate.after(defaultCenturyStart) ) {
calendar.add(Calendar.YEAR, 100);
parsedDate = calendar.getTime();
}
*/
// Because of the above condition, save off the fields in case we need to readjust.
// The procedure we use here is not particularly efficient, but there is no other
// way to do this given the API restrictions present in Calendar. We minimize
// inefficiency by only performing this computation when it might apply, that is,
// when the two-digit year is equal to the start year, and thus might fall at the
// front or the back of the default century. This only works because we adjust
// the year correctly to start with in other cases -- see subParse().
Date parsedDate;
try {
if (ambiguousYear[0]) // If this is true then the two-digit year == the default start year
{
// We need a copy of the fields, and we need to avoid triggering a call to
// complete(), which will recalculate the fields. Since we can't access
// the fields[] array in Calendar, we clone the entire object. This will
// stop working if Calendar.clone() is ever rewritten to call complete().
Calendar savedCalendar = (Calendar)calendar.clone();
parsedDate = calendar.getTime();
if (parsedDate.before(defaultCenturyStart))
{
// We can't use add here because that does a complete() first.
savedCalendar.set(Calendar.YEAR, defaultCenturyStartYear + 100);
parsedDate = savedCalendar.getTime();
parsedDate = calb.establish(calendar).getTime();
// If the year value is ambiguous,
// then the two-digit year == the default start year
if (ambiguousYear[0]) {
if (parsedDate.before(defaultCenturyStart)) {
parsedDate = calb.addYear(100).establish(calendar).getTime();
}
}
else parsedDate = calendar.getTime();
}
// An IllegalArgumentException will be thrown by Calendar.getTime()
// if any fields are out of range, e.g., MONTH == 17.
......@@ -1415,7 +1430,7 @@ public class SimpleDateFormat extends DateFormat {
* @return the new start position if matching succeeded; a negative number
* indicating matching failure, otherwise.
*/
private int matchString(String text, int start, int field, String[] data)
private int matchString(String text, int start, int field, String[] data, CalendarBuilder calb)
{
int i = 0;
int count = data.length;
......@@ -1441,7 +1456,7 @@ public class SimpleDateFormat extends DateFormat {
}
if (bestMatch >= 0)
{
calendar.set(field, bestMatch);
calb.set(field, bestMatch);
return start + bestMatchLength;
}
return -start;
......@@ -1452,7 +1467,8 @@ public class SimpleDateFormat extends DateFormat {
* String[]). This method takes a Map<String, Integer> instead of
* String[].
*/
private int matchString(String text, int start, int field, Map<String,Integer> data) {
private int matchString(String text, int start, int field,
Map<String,Integer> data, CalendarBuilder calb) {
if (data != null) {
String bestMatch = null;
......@@ -1466,7 +1482,7 @@ public class SimpleDateFormat extends DateFormat {
}
if (bestMatch != null) {
calendar.set(field, data.get(bestMatch));
calb.set(field, data.get(bestMatch));
return start + bestMatch.length();
}
}
......@@ -1486,11 +1502,22 @@ public class SimpleDateFormat extends DateFormat {
return -1;
}
private boolean matchDSTString(String text, int start, int zoneIndex, int standardIndex,
String[][] zoneStrings) {
int index = standardIndex + 2;
String zoneName = zoneStrings[zoneIndex][index];
if (text.regionMatches(true, start,
zoneName, 0, zoneName.length())) {
return true;
}
return false;
}
/**
* find time zone 'text' matched zoneStrings and set to internal
* calendar.
*/
private int subParseZoneString(String text, int start) {
private int subParseZoneString(String text, int start, CalendarBuilder calb) {
boolean useSameName = false; // true if standard and daylight time use the same abbreviation.
TimeZone currentTimeZone = getTimeZone();
......@@ -1524,6 +1551,7 @@ public class SimpleDateFormat extends DateFormat {
}
}
}
if (tz == null) {
int len = zoneStrings.length;
for (int i = 0; i < len; i++) {
......@@ -1549,8 +1577,8 @@ public class SimpleDateFormat extends DateFormat {
// determine the local time. (6645292)
int dstAmount = (nameIndex >= 3) ? tz.getDSTSavings() : 0;
if (!(useSameName || (nameIndex >= 3 && dstAmount == 0))) {
calendar.set(Calendar.ZONE_OFFSET, tz.getRawOffset());
calendar.set(Calendar.DST_OFFSET, dstAmount);
calb.set(Calendar.ZONE_OFFSET, tz.getRawOffset())
.set(Calendar.DST_OFFSET, dstAmount);
}
return (start + zoneNames[nameIndex].length());
}
......@@ -1577,11 +1605,15 @@ public class SimpleDateFormat extends DateFormat {
private int subParse(String text, int start, int patternCharIndex, int count,
boolean obeyCount, boolean[] ambiguousYear,
ParsePosition origPos,
boolean useFollowingMinusSignAsDelimiter) {
boolean useFollowingMinusSignAsDelimiter, CalendarBuilder calb) {
Number number = null;
int value = 0;
ParsePosition pos = new ParsePosition(0);
pos.index = start;
if (patternCharIndex == PATTERN_WEEK_YEAR && !calendar.isWeekDateSupported()) {
// use calendar year 'y' instead
patternCharIndex = PATTERN_YEAR;
}
int field = PATTERN_INDEX_TO_CALENDAR_FIELD[patternCharIndex];
// If there are any spaces here, skip over them. If we hit the end
......@@ -1602,10 +1634,11 @@ public class SimpleDateFormat extends DateFormat {
// a number value. We handle further, more generic cases below. We need
// to handle some of them here because some fields require extra processing on
// the parsed value.
if (patternCharIndex == 4 /* HOUR_OF_DAY1_FIELD */ ||
patternCharIndex == 15 /* HOUR1_FIELD */ ||
(patternCharIndex == 2 /* MONTH_FIELD */ && count <= 2) ||
patternCharIndex == 1 /* YEAR_FIELD */) {
if (patternCharIndex == PATTERN_HOUR_OF_DAY1 ||
patternCharIndex == PATTERN_HOUR1 ||
(patternCharIndex == PATTERN_MONTH && count <= 2) ||
patternCharIndex == PATTERN_YEAR ||
patternCharIndex == PATTERN_WEEK_YEAR) {
// It would be good to unify this with the obeyCount logic below,
// but that's going to be difficult.
if (obeyCount) {
......@@ -1617,7 +1650,7 @@ public class SimpleDateFormat extends DateFormat {
number = numberFormat.parse(text, pos);
}
if (number == null) {
if (patternCharIndex != 1 || calendar instanceof GregorianCalendar) {
if (patternCharIndex != PATTERN_YEAR || calendar instanceof GregorianCalendar) {
break parsing;
}
} else {
......@@ -1638,33 +1671,34 @@ public class SimpleDateFormat extends DateFormat {
int index;
switch (patternCharIndex) {
case 0: // 'G' - ERA
case PATTERN_ERA: // 'G'
if (useDateFormatSymbols) {
if ((index = matchString(text, start, Calendar.ERA, formatData.getEras())) > 0) {
if ((index = matchString(text, start, Calendar.ERA, formatData.getEras(), calb)) > 0) {
return index;
}
} else {
Map<String, Integer> map = calendar.getDisplayNames(field,
Calendar.ALL_STYLES,
locale);
if ((index = matchString(text, start, field, map)) > 0) {
if ((index = matchString(text, start, field, map, calb)) > 0) {
return index;
}
}
break parsing;
case 1: // 'y' - YEAR
case PATTERN_WEEK_YEAR: // 'Y'
case PATTERN_YEAR: // 'y'
if (!(calendar instanceof GregorianCalendar)) {
// calendar might have text representations for year values,
// such as "\u5143" in JapaneseImperialCalendar.
int style = (count >= 4) ? Calendar.LONG : Calendar.SHORT;
Map<String, Integer> map = calendar.getDisplayNames(field, style, locale);
if (map != null) {
if ((index = matchString(text, start, field, map)) > 0) {
if ((index = matchString(text, start, field, map, calb)) > 0) {
return index;
}
}
calendar.set(field, value);
calb.set(field, value);
return pos.index;
}
......@@ -1676,8 +1710,7 @@ public class SimpleDateFormat extends DateFormat {
// is treated literally: "2250", "-1", "1", "002".
if (count <= 2 && (pos.index - start) == 2
&& Character.isDigit(text.charAt(start))
&& Character.isDigit(text.charAt(start+1)))
{
&& Character.isDigit(text.charAt(start+1))) {
// Assume for example that the defaultCenturyStart is 6/18/1903.
// This means that two-digit years will be forced into the range
// 6/18/1903 to 6/17/2003. As a result, years 00, 01, and 02
......@@ -1691,16 +1724,16 @@ public class SimpleDateFormat extends DateFormat {
value += (defaultCenturyStartYear/100)*100 +
(value < ambiguousTwoDigitYear ? 100 : 0);
}
calendar.set(Calendar.YEAR, value);
calb.set(field, value);
return pos.index;
case 2: // 'M' - MONTH
case PATTERN_MONTH: // 'M'
if (count <= 2) // i.e., M or MM.
{
// Don't want to parse the month if it is a string
// while pattern uses numeric style: M or MM.
// [We computed 'value' above.]
calendar.set(Calendar.MONTH, value - 1);
calb.set(Calendar.MONTH, value - 1);
return pos.index;
}
......@@ -1710,50 +1743,50 @@ public class SimpleDateFormat extends DateFormat {
// Try count == 4 first:
int newStart = 0;
if ((newStart = matchString(text, start, Calendar.MONTH,
formatData.getMonths())) > 0) {
formatData.getMonths(), calb)) > 0) {
return newStart;
}
// count == 4 failed, now try count == 3
if ((index = matchString(text, start, Calendar.MONTH,
formatData.getShortMonths())) > 0) {
formatData.getShortMonths(), calb)) > 0) {
return index;
}
} else {
Map<String, Integer> map = calendar.getDisplayNames(field,
Calendar.ALL_STYLES,
locale);
if ((index = matchString(text, start, field, map)) > 0) {
if ((index = matchString(text, start, field, map, calb)) > 0) {
return index;
}
}
break parsing;
case 4: // 'k' - HOUR_OF_DAY: 1-based. eg, 23:59 + 1 hour =>> 24:59
case PATTERN_HOUR_OF_DAY1: // 'k' 1-based. eg, 23:59 + 1 hour =>> 24:59
// [We computed 'value' above.]
if (value == calendar.getMaximum(Calendar.HOUR_OF_DAY)+1) value = 0;
calendar.set(Calendar.HOUR_OF_DAY, value);
calb.set(Calendar.HOUR_OF_DAY, value);
return pos.index;
case 9:
{ // 'E' - DAY_OF_WEEK
case PATTERN_DAY_OF_WEEK: // 'E'
{
if (useDateFormatSymbols) {
// Want to be able to parse both short and long forms.
// Try count == 4 (DDDD) first:
int newStart = 0;
if ((newStart=matchString(text, start, Calendar.DAY_OF_WEEK,
formatData.getWeekdays())) > 0) {
formatData.getWeekdays(), calb)) > 0) {
return newStart;
}
// DDDD failed, now try DDD
if ((index = matchString(text, start, Calendar.DAY_OF_WEEK,
formatData.getShortWeekdays())) > 0) {
formatData.getShortWeekdays(), calb)) > 0) {
return index;
}
} else {
int[] styles = { Calendar.LONG, Calendar.SHORT };
for (int style : styles) {
Map<String,Integer> map = calendar.getDisplayNames(field, style, locale);
if ((index = matchString(text, start, field, map)) > 0) {
if ((index = matchString(text, start, field, map, calb)) > 0) {
return index;
}
}
......@@ -1761,27 +1794,28 @@ public class SimpleDateFormat extends DateFormat {
}
break parsing;
case 14: // 'a' - AM_PM
case PATTERN_AM_PM: // 'a'
if (useDateFormatSymbols) {
if ((index = matchString(text, start, Calendar.AM_PM, formatData.getAmPmStrings())) > 0) {
if ((index = matchString(text, start, Calendar.AM_PM,
formatData.getAmPmStrings(), calb)) > 0) {
return index;
}
} else {
Map<String,Integer> map = calendar.getDisplayNames(field, Calendar.ALL_STYLES, locale);
if ((index = matchString(text, start, field, map)) > 0) {
if ((index = matchString(text, start, field, map, calb)) > 0) {
return index;
}
}
break parsing;
case 15: // 'h' - HOUR:1-based. eg, 11PM + 1 hour =>> 12 AM
case PATTERN_HOUR1: // 'h' 1-based. eg, 11PM + 1 hour =>> 12 AM
// [We computed 'value' above.]
if (value == calendar.getLeastMaximum(Calendar.HOUR)+1) value = 0;
calendar.set(Calendar.HOUR, value);
calb.set(Calendar.HOUR, value);
return pos.index;
case 17: // 'z' - ZONE_OFFSET
case 18: // 'Z' - ZONE_OFFSET
case PATTERN_ZONE_NAME: // 'z'
case PATTERN_ZONE_VALUE: // 'Z'
// First try to parse generic forms such as GMT-07:00. Do this first
// in case localized TimeZoneNames contains the string "GMT"
// for a zone; in that case, we don't want to match the first three
......@@ -1797,7 +1831,7 @@ public class SimpleDateFormat extends DateFormat {
if ((text.length() - start) >= GMT.length() &&
text.regionMatches(true, start, GMT, 0, GMT.length())) {
int num;
calendar.set(Calendar.DST_OFFSET, 0);
calb.set(Calendar.DST_OFFSET, 0);
pos.index = start + GMT.length();
try { // try-catch for "GMT" only time zone string
......@@ -1811,7 +1845,7 @@ public class SimpleDateFormat extends DateFormat {
catch(StringIndexOutOfBoundsException e) {}
if (sign == 0) { /* "GMT" without offset */
calendar.set(Calendar.ZONE_OFFSET, 0);
calb.set(Calendar.ZONE_OFFSET, 0);
return pos.index;
}
......@@ -1875,7 +1909,7 @@ public class SimpleDateFormat extends DateFormat {
sign = -1;
} else {
// Try parsing the text as a time zone name (abbr).
int i = subParseZoneString(text, pos.index);
int i = subParseZoneString(text, pos.index, calb);
if (i != 0) {
return i;
}
......@@ -1933,24 +1967,24 @@ public class SimpleDateFormat extends DateFormat {
// arrive here if the form GMT+/-... or an RFC 822 form was seen.
if (sign != 0) {
offset *= MILLIS_PER_MINUTE * sign;
calendar.set(Calendar.ZONE_OFFSET, offset);
calendar.set(Calendar.DST_OFFSET, 0);
calb.set(Calendar.ZONE_OFFSET, offset).set(Calendar.DST_OFFSET, 0);
return ++pos.index;
}
}
break parsing;
default:
// case 3: // 'd' - DATE
// case 5: // 'H' - HOUR_OF_DAY:0-based. eg, 23:59 + 1 hour =>> 00:59
// case 6: // 'm' - MINUTE
// case 7: // 's' - SECOND
// case 8: // 'S' - MILLISECOND
// case 10: // 'D' - DAY_OF_YEAR
// case 11: // 'F' - DAY_OF_WEEK_IN_MONTH
// case 12: // 'w' - WEEK_OF_YEAR
// case 13: // 'W' - WEEK_OF_MONTH
// case 16: // 'K' - HOUR: 0-based. eg, 11PM + 1 hour =>> 0 AM
// case PATTERN_DAY_OF_MONTH: // 'd'
// case PATTERN_HOUR_OF_DAY0: // 'H' 0-based. eg, 23:59 + 1 hour =>> 00:59
// case PATTERN_MINUTE: // 'm'
// case PATTERN_SECOND: // 's'
// case PATTERN_MILLISECOND: // 'S'
// case PATTERN_DAY_OF_YEAR: // 'D'
// case PATTERN_DAY_OF_WEEK_IN_MONTH: // 'F'
// case PATTERN_WEEK_OF_YEAR: // 'w'
// case PATTERN_WEEK_OF_MONTH: // 'W'
// case PATTERN_HOUR0: // 'K' 0-based. eg, 11PM + 1 hour =>> 0 AM
// case PATTERN_ISO_DAY_OF_WEEK: // 'u' (pseudo field);
// Handle "generic" fields
if (obeyCount) {
......@@ -1973,7 +2007,7 @@ public class SimpleDateFormat extends DateFormat {
pos.index--;
}
calendar.set(field, value);
calb.set(field, value);
return pos.index;
}
break parsing;
......@@ -2020,11 +2054,18 @@ public class SimpleDateFormat extends DateFormat {
inQuote = true;
else if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')) {
int ci = from.indexOf(c);
if (ci == -1)
if (ci >= 0) {
// patternChars is longer than localPatternChars due
// to serialization compatibility. The pattern letters
// unsupported by localPatternChars pass through.
if (ci < to.length()) {
c = to.charAt(ci);
}
} else {
throw new IllegalArgumentException("Illegal pattern " +
" character '" +
c + "'");
c = to.charAt(ci);
}
}
}
result.append(c);
......
src/share/classes/java/util/Calendar.java
浏览文件 @ 2483d502
/*
* Copyright (c) 1996, 2007, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1996, 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
......@@ -119,7 +119,7 @@ import sun.util.resources.LocaleData;
* calculating its time or calendar field values if any out-of-range field
* value has been set.
*
* <h4>First Week</h4>
* <h4><a name="first_week">First Week</a></h4>
*
* <code>Calendar</code> defines a locale-specific seven day week using two
* parameters: the first day of the week and the minimal days in first week
......@@ -2195,6 +2195,101 @@ public abstract class Calendar implements Serializable, Cloneable, Comparable<Ca
return minimalDaysInFirstWeek;
}
/**
* Returns whether this {@code Calendar} supports week dates.
*
* <p>The default implementation of this method returns {@code false}.
*
* @return {@code true} if this {@code Calendar} supports week dates;
* {@code false} otherwise.
* @see #getWeekYear()
* @see #setWeekDate(int,int,int)
* @see #getWeeksInWeekYear()
* @since 1.7
*/
public boolean isWeekDateSupported() {
return false;
}
/**
* Returns the week year represented by this {@code Calendar}. The
* week year is in sync with the week cycle. The {@linkplain
* #getFirstDayOfWeek() first day of the first week} is the first
* day of the week year.
*
* <p>The default implementation of this method throws an
* {@link UnsupportedOperationException}.
*
* @return the week year of this {@code Calendar}
* @exception UnsupportedOperationException
* if any week year numbering isn't supported
* in this {@code Calendar}.
* @see #isWeekDateSupported()
* @see #getFirstDayOfWeek()
* @see #getMinimalDaysInFirstWeek()
* @since 1.7
*/
public int getWeekYear() {
throw new UnsupportedOperationException();
}
/**
* Sets the date of this {@code Calendar} with the the given date
* specifiers - week year, week of year, and day of week.
*
* <p>Unlike the {@code set} method, all of the calendar fields
* and {@code time} values are calculated upon return.
*
* <p>If {@code weekOfYear} is out of the valid week-of-year range
* in {@code weekYear}, the {@code weekYear} and {@code
* weekOfYear} values are adjusted in lenient mode, or an {@code
* IllegalArgumentException} is thrown in non-lenient mode.
*
* <p>The default implementation of this method throws an
* {@code UnsupportedOperationException}.
*
* @param weekYear the week year
* @param weekOfYear the week number based on {@code weekYear}
* @param dayOfWeek the day of week value: one of the constants
* for the {@link #DAY_OF_WEEK} field: {@link
* #SUNDAY}, ..., {@link #SATURDAY}.
* @exception IllegalArgumentException
* if any of the given date specifiers is invalid
* or any of the calendar fields are inconsistent
* with the given date specifiers in non-lenient mode
* @exception UnsupportedOperationException
* if any week year numbering isn't supported in this
* {@code Calendar}.
* @see #isWeekDateSupported()
* @see #getFirstDayOfWeek()
* @see #getMinimalDaysInFirstWeek()
* @since 1.7
*/
public void setWeekDate(int weekYear, int weekOfYear, int dayOfWeek) {
throw new UnsupportedOperationException();
}
/**
* Returns the number of weeks in the week year represented by this
* {@code Calendar}.
*
* <p>The default implementation of this method throws an
* {@code UnsupportedOperationException}.
*
* @return the number of weeks in the week year.
* @exception UnsupportedOperationException
* if any week year numbering isn't supported in this
* {@code Calendar}.
* @see #WEEK_OF_YEAR
* @see #isWeekDateSupported()
* @see #getWeekYear()
* @see #getActualMaximum(int)
* @since 1.7
*/
public int getWeeksInWeekYear() {
throw new UnsupportedOperationException();
}
/**
* Returns the minimum value for the given calendar field of this
* <code>Calendar</code> instance. The minimum value is defined as
......
src/share/classes/java/util/GregorianCalendar.java
浏览文件 @ 2483d502
/*
* Copyright (c) 1996, 2006, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1996, 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
......@@ -88,23 +88,49 @@ import sun.util.calendar.ZoneInfo;
* adjustment may be made if desired for dates that are prior to the Gregorian
* changeover and which fall between January 1 and March 24.
*
* <p>Values calculated for the <code>WEEK_OF_YEAR</code> field range from 1 to
* 53. Week 1 for a year is the earliest seven day period starting on
* <code>getFirstDayOfWeek()</code> that contains at least
* <code>getMinimalDaysInFirstWeek()</code> days from that year. It thus
* depends on the values of <code>getMinimalDaysInFirstWeek()</code>,
* <code>getFirstDayOfWeek()</code>, and the day of the week of January 1.
* Weeks between week 1 of one year and week 1 of the following year are
* numbered sequentially from 2 to 52 or 53 (as needed).
* <p>For example, January 1, 1998 was a Thursday. If
* <code>getFirstDayOfWeek()</code> is <code>MONDAY</code> and
* <code>getMinimalDaysInFirstWeek()</code> is 4 (these are the values
* reflecting ISO 8601 and many national standards), then week 1 of 1998 starts
* on December 29, 1997, and ends on January 4, 1998. If, however,
* <code>getFirstDayOfWeek()</code> is <code>SUNDAY</code>, then week 1 of 1998
* starts on January 4, 1998, and ends on January 10, 1998; the first three days
* of 1998 then are part of week 53 of 1997.
* <h4><a name="week_and_year">Week Of Year and Week Year</a></h4>
*
* <p>Values calculated for the {@link Calendar#WEEK_OF_YEAR
* WEEK_OF_YEAR} field range from 1 to 53. The first week of a
* calendar year is the earliest seven day period starting on {@link
* Calendar#getFirstDayOfWeek() getFirstDayOfWeek()} that contains at
* least {@link Calendar#getMinimalDaysInFirstWeek()
* getMinimalDaysInFirstWeek()} days from that year. It thus depends
* on the values of {@code getMinimalDaysInFirstWeek()}, {@code
* getFirstDayOfWeek()}, and the day of the week of January 1. Weeks
* between week 1 of one year and week 1 of the following year
* (exclusive) are numbered sequentially from 2 to 52 or 53 (except
* for year(s) involved in the Julian-Gregorian transition).
*
* <p>The {@code getFirstDayOfWeek()} and {@code
* getMinimalDaysInFirstWeek()} values are initialized using
* locale-dependent resources when constructing a {@code
* GregorianCalendar}. <a name="iso8601_compatible_setting">The week
* determination is compatible</a> with the ISO 8601 standard when {@code
* getFirstDayOfWeek()} is {@code MONDAY} and {@code
* getMinimalDaysInFirstWeek()} is 4, which values are used in locales
* where the standard is preferred. These values can explicitly be set by
* calling {@link Calendar#setFirstDayOfWeek(int) setFirstDayOfWeek()} and
* {@link Calendar#setMinimalDaysInFirstWeek(int)
* setMinimalDaysInFirstWeek()}.
*
* <p>A <a name="week_year"><em>week year</em></a> is in sync with a
* {@code WEEK_OF_YEAR} cycle. All weeks between the first and last
* weeks (inclusive) have the same <em>week year</em> value.
* Therefore, the first and last days of a week year may have
* different calendar year values.
*
* <p>For example, January 1, 1998 is a Thursday. If {@code
* getFirstDayOfWeek()} is {@code MONDAY} and {@code
* getMinimalDaysInFirstWeek()} is 4 (ISO 8601 standard compatible
* setting), then week 1 of 1998 starts on December 29, 1997, and ends
* on January 4, 1998. The week year is 1998 for the last three days
* of calendar year 1997. If, however, {@code getFirstDayOfWeek()} is
* {@code SUNDAY}, then week 1 of 1998 starts on January 4, 1998, and
* ends on January 10, 1998; the first three days of 1998 then are
* part of week 53 of 1997 and their week year is 1997.
*
* <h4>Week Of Month</h4>
*
* <p>Values calculated for the <code>WEEK_OF_MONTH</code> field range from 0
* to 6. Week 1 of a month (the days with <code>WEEK_OF_MONTH =
......@@ -124,7 +150,9 @@ import sun.util.calendar.ZoneInfo;
* <code>getMinimalDaysInFirstWeek()</code> is changed to 3, then January 1
* through January 3 have a <code>WEEK_OF_MONTH</code> of 1.
*
* <p>The <code>clear</code> methods set calendar field(s)
* <h4>Default Fields Values</h4>
*
* <p>The <code>clear</code> method sets calendar field(s)
* undefined. <code>GregorianCalendar</code> uses the following
* default value for each calendar field if its value is undefined.
*
......@@ -1625,6 +1653,13 @@ public class GregorianCalendar extends Calendar {
* is 29 because 2004 is a leap year, and if the date of this
* instance is February 1, 2005, it's 28.
*
* <p>This method calculates the maximum value of {@link
* Calendar#WEEK_OF_YEAR WEEK_OF_YEAR} based on the {@link
* Calendar#YEAR YEAR} (calendar year) value, not the <a
* href="#week_year">week year</a>. Call {@link
* #getWeeksInWeekYear()} to get the maximum value of {@code
* WEEK_OF_YEAR} in the week year of this {@code GregorianCalendar}.
*
* @param field the calendar field
* @return the maximum of the given field for the time value of
* this <code>GregorianCalendar</code>
......@@ -1742,9 +1777,14 @@ public class GregorianCalendar extends Calendar {
if (gc == this) {
gc = (GregorianCalendar) gc.clone();
}
gc.set(DAY_OF_YEAR, getActualMaximum(DAY_OF_YEAR));
int maxDayOfYear = getActualMaximum(DAY_OF_YEAR);
gc.set(DAY_OF_YEAR, maxDayOfYear);
value = gc.get(WEEK_OF_YEAR);
if (internalGet(YEAR) != gc.getWeekYear()) {
gc.set(DAY_OF_YEAR, maxDayOfYear - 7);
value = gc.get(WEEK_OF_YEAR);
}
}
break;
case WEEK_OF_MONTH:
......@@ -1934,34 +1974,55 @@ public class GregorianCalendar extends Calendar {
}
}
//////////////////////
// Proposed public API
//////////////////////
/**
* Returns the year that corresponds to the <code>WEEK_OF_YEAR</code> field.
* This may be one year before or after the Gregorian or Julian year stored
* in the <code>YEAR</code> field. For example, January 1, 1999 is considered
* Friday of week 53 of 1998 (if minimal days in first week is
* 2 or less, and the first day of the week is Sunday). Given
* these same settings, the ISO year of January 1, 1999 is
* 1998.
*
* <p>This method calls {@link Calendar#complete} before
* calculating the week-based year.
* Returns {@code true} indicating this {@code GregorianCalendar}
* supports week dates.
*
* @return the year corresponding to the <code>WEEK_OF_YEAR</code> field, which
* may be one year before or after the <code>YEAR</code> field.
* @see #YEAR
* @see #WEEK_OF_YEAR
* @return {@code true} (always)
* @see #getWeekYear()
* @see #setWeekDate(int,int,int)
* @see #getWeeksInWeekYear()
* @since 1.7
*/
/*
public int getWeekBasedYear() {
complete();
// TODO: Below doesn't work for gregorian cutover...
@Override
public final boolean isWeekDateSupported() {
return true;
}
/**
* Returns the <a href="#week_year">week year</a> represented by this
* {@code GregorianCalendar}. The dates in the weeks between 1 and the
* maximum week number of the week year have the same week year value
* that may be one year before or after the {@link Calendar#YEAR YEAR}
* (calendar year) value.
*
* <p>This method calls {@link Calendar#complete()} before
* calculating the week year.
*
* @return the week year represented by this {@code GregorianCalendar}.
* If the {@link Calendar#ERA ERA} value is {@link #BC}, the year is
* represented by 0 or a negative number: BC 1 is 0, BC 2
* is -1, BC 3 is -2, and so on.
* @throws IllegalArgumentException
* if any of the calendar fields is invalid in non-lenient mode.
* @see #isWeekDateSupported()
* @see #getWeeksInWeekYear()
* @see Calendar#getFirstDayOfWeek()
* @see Calendar#getMinimalDaysInFirstWeek()
* @since 1.7
*/
@Override
public int getWeekYear() {
int year = get(YEAR); // implicitly calls complete()
if (internalGetEra() == BCE) {
year = 1 - year;
}
// Fast path for the Gregorian calendar years that are never
// affected by the Julian-Gregorian transition
if (year > gregorianCutoverYear + 1) {
int weekOfYear = internalGet(WEEK_OF_YEAR);
int year = internalGet(YEAR);
if (internalGet(MONTH) == Calendar.JANUARY) {
if (internalGet(MONTH) == JANUARY) {
if (weekOfYear >= 52) {
--year;
}
......@@ -1972,8 +2033,180 @@ public class GregorianCalendar extends Calendar {
}
return year;
}
// General (slow) path
int dayOfYear = internalGet(DAY_OF_YEAR);
int maxDayOfYear = getActualMaximum(DAY_OF_YEAR);
int minimalDays = getMinimalDaysInFirstWeek();
// Quickly check the possibility of year adjustments before
// cloning this GregorianCalendar.
if (dayOfYear > minimalDays && dayOfYear < (maxDayOfYear - 6)) {
return year;
}
// Create a clone to work on the calculation
GregorianCalendar cal = (GregorianCalendar) clone();
cal.setLenient(true);
// Use GMT so that intermediate date calculations won't
// affect the time of day fields.
cal.setTimeZone(TimeZone.getTimeZone("GMT"));
// Go to the first day of the year, which is usually January 1.
cal.set(DAY_OF_YEAR, 1);
cal.complete();
// Get the first day of the first day-of-week in the year.
int delta = getFirstDayOfWeek() - cal.get(DAY_OF_WEEK);
if (delta != 0) {
if (delta < 0) {
delta += 7;
}
cal.add(DAY_OF_YEAR, delta);
}
int minDayOfYear = cal.get(DAY_OF_YEAR);
if (dayOfYear < minDayOfYear) {
if (minDayOfYear <= minimalDays) {
--year;
}
} else {
cal.set(YEAR, year + 1);
cal.set(DAY_OF_YEAR, 1);
cal.complete();
int del = getFirstDayOfWeek() - cal.get(DAY_OF_WEEK);
if (del != 0) {
if (del < 0) {
del += 7;
}
cal.add(DAY_OF_YEAR, del);
}
minDayOfYear = cal.get(DAY_OF_YEAR) - 1;
if (minDayOfYear == 0) {
minDayOfYear = 7;
}
if (minDayOfYear >= minimalDays) {
int days = maxDayOfYear - dayOfYear + 1;
if (days <= (7 - minDayOfYear)) {
++year;
}
}
}
return year;
}
/**
* Sets this {@code GregorianCalendar} to the date given by the
* date specifiers - <a href="#week_year">{@code weekYear}</a>,
* {@code weekOfYear}, and {@code dayOfWeek}. {@code weekOfYear}
* follows the <a href="#week_and_year">{@code WEEK_OF_YEAR}
* numbering</a>. The {@code dayOfWeek} value must be one of the
* {@link Calendar#DAY_OF_WEEK DAY_OF_WEEK} values: {@link
* Calendar#SUNDAY SUNDAY} to {@link Calendar#SATURDAY SATURDAY}.
*
* <p>Note that the numeric day-of-week representation differs from
* the ISO 8601 standard, and that the {@code weekOfYear}
* numbering is compatible with the standard when {@code
* getFirstDayOfWeek()} is {@code MONDAY} and {@code
* getMinimalDaysInFirstWeek()} is 4.
*
* <p>Unlike the {@code set} method, all of the calendar fields
* and the instant of time value are calculated upon return.
*
* <p>If {@code weekOfYear} is out of the valid week-of-year
* range in {@code weekYear}, the {@code weekYear}
* and {@code weekOfYear} values are adjusted in lenient
* mode, or an {@code IllegalArgumentException} is thrown in
* non-lenient mode.
*
* @param weekYear the week year
* @param weekOfYear the week number based on {@code weekYear}
* @param dayOfWeek the day of week value: one of the constants
* for the {@link #DAY_OF_WEEK DAY_OF_WEEK} field:
* {@link Calendar#SUNDAY SUNDAY}, ...,
* {@link Calendar#SATURDAY SATURDAY}.
* @exception IllegalArgumentException
* if any of the given date specifiers is invalid,
* or if any of the calendar fields are inconsistent
* with the given date specifiers in non-lenient mode
* @see GregorianCalendar#isWeekDateSupported()
* @see Calendar#getFirstDayOfWeek()
* @see Calendar#getMinimalDaysInFirstWeek()
* @since 1.7
*/
@Override
public void setWeekDate(int weekYear, int weekOfYear, int dayOfWeek) {
if (dayOfWeek < SUNDAY || dayOfWeek > SATURDAY) {
throw new IllegalArgumentException("invalid dayOfWeek: " + dayOfWeek);
}
// To avoid changing the time of day fields by date
// calculations, use a clone with the GMT time zone.
GregorianCalendar gc = (GregorianCalendar) clone();
gc.setLenient(true);
int era = gc.get(ERA);
gc.clear();
gc.setTimeZone(TimeZone.getTimeZone("GMT"));
gc.set(ERA, era);
gc.set(YEAR, weekYear);
gc.set(WEEK_OF_YEAR, 1);
gc.set(DAY_OF_WEEK, getFirstDayOfWeek());
int days = dayOfWeek - getFirstDayOfWeek();
if (days < 0) {
days += 7;
}
days += 7 * (weekOfYear - 1);
if (days != 0) {
gc.add(DAY_OF_YEAR, days);
} else {
gc.complete();
}
set(ERA, gc.internalGet(ERA));
set(YEAR, gc.internalGet(YEAR));
set(MONTH, gc.internalGet(MONTH));
set(DAY_OF_MONTH, gc.internalGet(DAY_OF_MONTH));
// to avoid throwing an IllegalArgumentException in
// non-lenient, set WEEK_OF_YEAR and DAY_OF_WEEK internally
internalSet(WEEK_OF_YEAR, weekOfYear);
internalSet(DAY_OF_WEEK, dayOfWeek);
complete();
assert getWeekYear() == weekYear;
assert get(WEEK_OF_YEAR) == weekOfYear;
assert get(DAY_OF_WEEK) == dayOfWeek;
}
/**
* Returns the number of weeks in the <a href="#week_year">week year</a>
* represented by this {@code GregorianCalendar}.
*
* <p>For example, if this {@code GregorianCalendar}'s date is
* December 31, 2008 with <a href="#iso8601_compatible_setting">the ISO
* 8601 compatible setting</a>, this method will return 53 for the
* period: December 29, 2008 to January 3, 2010 while {@link
* #getActualMaximum(int) getActualMaximum(WEEK_OF_YEAR)} will return
* 52 for the period: December 31, 2007 to December 28, 2008.
*
* @return the number of weeks in the week year.
* @see Calendar#WEEK_OF_YEAR
* @see #getWeekYear()
* @see #getActualMaximum(int)
* @since 1.7
*/
public int getWeeksInWeekYear() {
GregorianCalendar gc = getNormalizedCalendar();
int weekYear = gc.getWeekYear();
if (weekYear == gc.internalGet(YEAR)) {
return gc.getActualMaximum(WEEK_OF_YEAR);
}
// Use the 2nd week for calculating the max of WEEK_OF_YEAR
if (gc == this) {
gc = (GregorianCalendar) gc.clone();
}
gc.setWeekDate(weekYear, 2, internalGet(DAY_OF_WEEK));
return gc.getActualMaximum(WEEK_OF_YEAR);
}
/////////////////////////////
// Time => Fields computation
......@@ -2178,7 +2411,7 @@ public class GregorianCalendar extends Calendar {
// If we are in the cutover year, we need some special handling.
if (normalizedYear == cutoverYear) {
// Need to take care of the "missing" days.
if (getCutoverCalendarSystem() == jcal) {
if (gregorianCutoverYearJulian <= gregorianCutoverYear) {
// We need to find out where we are. The cutover
// gap could even be more than one year. (One
// year difference in ~48667 years.)
......@@ -2208,24 +2441,33 @@ public class GregorianCalendar extends Calendar {
// December 31, which is not always true in
// GregorianCalendar.
long fixedDec31 = fixedDateJan1 - 1;
long prevJan1;
long prevJan1 = fixedDateJan1 - 365;
if (normalizedYear > (cutoverYear + 1)) {
prevJan1 = fixedDateJan1 - 365;
if (CalendarUtils.isGregorianLeapYear(normalizedYear - 1)) {
--prevJan1;
}
} else if (normalizedYear <= gregorianCutoverYearJulian) {
if (CalendarUtils.isJulianLeapYear(normalizedYear - 1)) {
--prevJan1;
}
} else {
BaseCalendar calForJan1 = calsys;
int prevYear = normalizedYear - 1;
if (prevYear == cutoverYear) {
//int prevYear = normalizedYear - 1;
int prevYear = getCalendarDate(fixedDec31).getNormalizedYear();
if (prevYear == gregorianCutoverYear) {
calForJan1 = getCutoverCalendarSystem();
}
if (calForJan1 == jcal) {
prevJan1 = calForJan1.getFixedDate(prevYear,
BaseCalendar.JANUARY,
1,
null);
while (prevJan1 > fixedDec31) {
prevJan1 = getJulianCalendarSystem().getFixedDate(--prevYear,
} else {
prevJan1 = gregorianCutoverDate;
calForJan1 = gcal;
}
} else if (prevYear <= gregorianCutoverYearJulian) {
calForJan1 = getJulianCalendarSystem();
prevJan1 = calForJan1.getFixedDate(prevYear,
BaseCalendar.JANUARY,
1,
null);
......@@ -2260,14 +2502,20 @@ public class GregorianCalendar extends Calendar {
if (nextYear == gregorianCutoverYear) {
calForJan1 = getCutoverCalendarSystem();
}
long nextJan1 = calForJan1.getFixedDate(nextYear,
long nextJan1;
if (nextYear > gregorianCutoverYear
|| gregorianCutoverYearJulian == gregorianCutoverYear
|| nextYear == gregorianCutoverYearJulian) {
nextJan1 = calForJan1.getFixedDate(nextYear,
BaseCalendar.JANUARY,
1,
null);
if (nextJan1 < fixedDate) {
} else {
nextJan1 = gregorianCutoverDate;
calForJan1 = gcal;
}
long nextJan1st = calForJan1.getDayOfWeekDateOnOrBefore(nextJan1 + 6,
getFirstDayOfWeek());
int ndays = (int)(nextJan1st - nextJan1);
......@@ -2409,10 +2657,24 @@ public class GregorianCalendar extends Calendar {
}
gfd = jfd;
} else {
gfd = fixedDate + getFixedDate(gcal, year, fieldMask);
jfd = fixedDate + getFixedDate(getJulianCalendarSystem(), year, fieldMask);
gfd = fixedDate + getFixedDate(gcal, year, fieldMask);
}
// Now we have to determine which calendar date it is.
// If the date is relative from the beginning of the year
// in the Julian calendar, then use jfd;
if (isFieldSet(fieldMask, DAY_OF_YEAR) || isFieldSet(fieldMask, WEEK_OF_YEAR)) {
if (gregorianCutoverYear == gregorianCutoverYearJulian) {
fixedDate = jfd;
break calculateFixedDate;
} else if (year == gregorianCutoverYear) {
fixedDate = gfd;
break calculateFixedDate;
}
}
if (gfd >= gregorianCutoverDate) {
if (jfd >= gregorianCutoverDate) {
fixedDate = gfd;
......@@ -2494,9 +2756,10 @@ public class GregorianCalendar extends Calendar {
continue;
}
if (originalFields[field] != internalGet(field)) {
String s = originalFields[field] + " -> " + internalGet(field);
// Restore the original field values
System.arraycopy(originalFields, 0, fields, 0, fields.length);
throw new IllegalArgumentException(getFieldName(field));
throw new IllegalArgumentException(getFieldName(field) + ": " + s);
}
}
}
......@@ -2669,9 +2932,7 @@ public class GregorianCalendar extends Calendar {
* method returns Gregorian. Otherwise, Julian.
*/
private BaseCalendar getCutoverCalendarSystem() {
CalendarDate date = getGregorianCutoverDate();
if (date.getMonth() == BaseCalendar.JANUARY
&& date.getDayOfMonth() == 1) {
if (gregorianCutoverYearJulian < gregorianCutoverYear) {
return gcal;
}
return getJulianCalendarSystem();
......
test/java/text/Format/DateFormat/WeekDateTest.java 0 → 100644
浏览文件 @ 2483d502
/*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 4267450
* @summary Unit test for week date support
*/
import java.text.*;
import java.util.*;
import static java.util.GregorianCalendar.*;
public class WeekDateTest {
static SimpleDateFormat ymdFormat = new SimpleDateFormat("yyyy-MM-dd");
static SimpleDateFormat ywdFormat = new SimpleDateFormat("YYYY-'W'ww-u");
static {
ymdFormat.setCalendar(newCalendar());
ywdFormat.setCalendar(newCalendar());
}
// Round-trip Data
static final String[][] roundTripData = {
{ "2005-01-01", "2004-W53-6" },
{ "2005-01-02", "2004-W53-7" },
{ "2005-12-31", "2005-W52-6" },
{ "2007-01-01", "2007-W01-1" },
{ "2007-12-30", "2007-W52-7" },
{ "2007-12-31", "2008-W01-1" },
{ "2008-01-01", "2008-W01-2" },
{ "2008-12-29", "2009-W01-1" },
{ "2008-12-31", "2009-W01-3" },
{ "2009-01-01", "2009-W01-4" },
{ "2009-12-31", "2009-W53-4" },
{ "2010-01-03", "2009-W53-7" },
{ "2009-12-31", "2009-W53-4" },
{ "2010-01-01", "2009-W53-5" },
{ "2010-01-02", "2009-W53-6" },
{ "2010-01-03", "2009-W53-7" },
{ "2008-12-28", "2008-W52-7" },
{ "2008-12-29", "2009-W01-1" },
{ "2008-12-30", "2009-W01-2" },
{ "2008-12-31", "2009-W01-3" },
{ "2009-01-01", "2009-W01-4" },
{ "2009-01-01", "2009-W01-4" },
};
// Data for leniency test
static final String[][] leniencyData = {
{ "2008-12-28", "2009-W01-0" },
{ "2010-01-04", "2009-W53-8" },
{ "2008-12-29", "2008-W53-1" },
};
static final String[] invalidData = {
"2010-W00-1",
"2010-W55-1",
"2010-W03-0",
"2010-W04-8",
"2010-W04-19"
};
public static void main(String[] args) throws Exception {
formatTest(roundTripData);
parseTest(roundTripData);
parseTest(leniencyData);
nonLenientTest(invalidData);
noWeekDateSupport();
}
private static void formatTest(String[][] data) throws Exception {
for (String[] dates : data) {
String regularDate = dates[0];
String weekDate = dates[1];
Date date = null;
date = ymdFormat.parse(regularDate);
String s = ywdFormat.format(date);
if (!s.equals(weekDate)) {
throw new RuntimeException("format: got="+s+", expecetd="+weekDate);
}
}
}
private static void parseTest(String[][] data) throws Exception {
for (String[] dates : data) {
String regularDate = dates[0];
String weekDate = dates[1];
Date date1 = null, date2 = null;
date1 = ymdFormat.parse(regularDate);
date2 = ywdFormat.parse(weekDate);
if (!date1.equals(date2)) {
System.err.println(regularDate + ": date1 = " + date1);
System.err.println(weekDate + ": date2 = " + date2);
throw new RuntimeException("parse: date1 != date2");
}
}
}
// Non-lenient mode test
private static void nonLenientTest(String[] data) {
ywdFormat.setLenient(false);
for (String date : data) {
try {
Date d = ywdFormat.parse(date);
throw new RuntimeException("No ParseException thrown with " + date);
} catch (ParseException e) {
// OK
}
}
ywdFormat.setLenient(true);
}
private static void noWeekDateSupport() throws Exception {
// Tests with Japanese Imperial Calendar that doesn't support week dates.
Calendar jcal = Calendar.getInstance(TimeZone.getTimeZone("GMT"),
new Locale("ja", "JP", "JP"));
jcal.setFirstDayOfWeek(MONDAY);
jcal.setMinimalDaysInFirstWeek(4);
SimpleDateFormat sdf = new SimpleDateFormat("Y-'W'ww-u");
sdf.setCalendar(jcal);
Date d = sdf.parse("21-W01-3"); // 2008-12-31 == H20-12-31
GregorianCalendar gcal = newCalendar();
gcal.setTime(d);
if (gcal.get(YEAR) != 2008
|| gcal.get(MONTH) != DECEMBER
|| gcal.get(DAY_OF_MONTH) != 31) {
String s = String.format("noWeekDateSupport: got %04d-%02d-%02d, expected 2008-12-31%n",
gcal.get(YEAR),
gcal.get(MONTH)+1,
gcal.get(DAY_OF_MONTH));
throw new RuntimeException(s);
}
}
private static GregorianCalendar newCalendar() {
// Use GMT to avoid any surprises related DST transitions.
GregorianCalendar cal = new GregorianCalendar(TimeZone.getTimeZone("GMT"));
// Setup the ISO 8601 compatible parameters
cal.setFirstDayOfWeek(MONDAY);
cal.setMinimalDaysInFirstWeek(4);
return cal;
}
}
test/java/util/Calendar/WeekDateTest.java 0 → 100644
浏览文件 @ 2483d502
/*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 4267450
* @summary Unit test for week date support
*/
import java.text.*;
import java.util.*;
import static java.util.GregorianCalendar.*;
public class WeekDateTest {
// Week dates are in the ISO numbering for day-of-week.
static int[][][] data = {
// Calendar year-date, Week year-date
{{ 2005, 01, 01}, {2004, 53, 6}},
{{ 2005, 01, 02}, {2004, 53, 7}},
{{ 2005, 12, 31}, {2005, 52, 6}},
{{ 2007, 01, 01}, {2007, 01, 1}},
{{ 2007, 12, 30}, {2007, 52, 7}},
{{ 2007, 12, 31}, {2008, 01, 1}},
{{ 2008, 01, 01}, {2008, 01, 2}},
{{ 2008, 12, 29}, {2009, 01, 1}},
{{ 2008, 12, 31}, {2009, 01, 3}},
{{ 2009, 01, 01}, {2009, 01, 4}},
{{ 2009, 12, 31}, {2009, 53, 4}},
{{ 2010, 01, 03}, {2009, 53, 7}},
{{ 2009, 12, 31}, {2009, 53, 4}},
{{ 2010, 01, 01}, {2009, 53, 5}},
{{ 2010, 01, 02}, {2009, 53, 6}},
{{ 2010, 01, 03}, {2009, 53, 7}},
{{ 2008, 12, 28}, {2008, 52, 7}},
{{ 2008, 12, 29}, {2009, 01, 1}},
{{ 2008, 12, 30}, {2009, 01, 2}},
{{ 2008, 12, 31}, {2009, 01, 3}},
{{ 2009, 01, 01}, {2009, 01, 4}}
};
public static void main(String[] args) {
GregorianCalendar cal = newCalendar();
for (int[][] dates : data) {
int[] expected = dates[0];
int[] weekDate = dates[1];
// Convert ISO 8601 day-of-week to Calendar.DAY_OF_WEEK.
int dayOfWeek = weekDate[2] == 7 ? SUNDAY : weekDate[2] + 1;
cal.clear();
cal.setWeekDate(weekDate[0], weekDate[1], dayOfWeek);
if (cal.get(YEAR) != expected[0]
|| cal.get(MONTH)+1 != expected[1]
|| cal.get(DAY_OF_MONTH) != expected[2]) {
String s = String.format("got=%4d-%02d-%02d, expected=%4d-%02d-%02d",
cal.get(YEAR), cal.get(MONTH)+1, cal.get(DAY_OF_MONTH),
expected[0], expected[1], expected[2]);
throw new RuntimeException(s);
}
if (cal.getWeekYear() != weekDate[0]
|| cal.get(WEEK_OF_YEAR) != weekDate[1]
|| cal.get(DAY_OF_WEEK) != dayOfWeek) {
String s = String.format(
"got=%4d-W%02d-%d, expected=%4d-W%02d-%d (not ISO day-of-week)",
cal.getWeekYear(), cal.get(WEEK_OF_YEAR), cal.get(DAY_OF_WEEK),
weekDate[0], weekDate[1], dayOfWeek);
throw new RuntimeException(s);
}
}
// Test getWeeksInWeekYear().
// If we avoid the first week of January and the last week of
// December, getWeeksInWeekYear() and
// getActualMaximum(WEEK_OF_YEAR) values should be the same.
for (int year = 2000; year <= 2100; year++) {
cal.clear();
cal.set(year, JUNE, 1);
int n = cal.getWeeksInWeekYear();
if (n != cal.getActualMaximum(WEEK_OF_YEAR)) {
String s = String.format("getWeeksInWeekYear() = %d, "
+ "getActualMaximum(WEEK_OF_YEAR) = %d%n",
n, cal.getActualMaximum(WEEK_OF_YEAR));
throw new RuntimeException(s);
}
cal.setWeekDate(cal.getWeekYear(), 1, MONDAY);
System.out.println(cal.getTime());
if (cal.getWeeksInWeekYear() != n) {
String s = String.format("first day: got %d, expected %d%n",
cal.getWeeksInWeekYear(), n);
throw new RuntimeException(s);
}
cal.setWeekDate(cal.getWeekYear(), n, SUNDAY);
System.out.println(cal.getTime());
if (cal.getWeeksInWeekYear() != n) {
String s = String.format("last day: got %d, expected %d%n",
cal.getWeeksInWeekYear(), n);
throw new RuntimeException(s);
}
}
}
private static GregorianCalendar newCalendar() {
// Use GMT to avoid any surprises related DST transitions.
GregorianCalendar cal = new GregorianCalendar(TimeZone.getTimeZone("GMT"));
if (!cal.isWeekDateSupported()) {
throw new RuntimeException("Week dates not supported");
}
// Setup the ISO 8601 compatible parameters
cal.setFirstDayOfWeek(MONDAY);
cal.setMinimalDaysInFirstWeek(4);
return cal;
}
}
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