0N/A/*
2362N/A * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/Apackage java.text;
0N/A
0N/Aimport java.util.Calendar;
0N/Aimport static java.util.GregorianCalendar.*;
0N/A
0N/A/**
0N/A * {@code CalendarBuilder} keeps field-value pairs for setting
0N/A * the calendar fields of the given {@code Calendar}. It has the
0N/A * {@link Calendar#FIELD_COUNT FIELD_COUNT}-th field for the week year
0N/A * support. Also {@code ISO_DAY_OF_WEEK} is used to specify
0N/A * {@code DAY_OF_WEEK} in the ISO day of week numbering.
0N/A *
0N/A * <p>{@code CalendarBuilder} retains the semantic of the pseudo
0N/A * timestamp for fields. {@code CalendarBuilder} uses a single
0N/A * int array combining fields[] and stamp[] of {@code Calendar}.
0N/A *
0N/A * @author Masayoshi Okutsu
0N/A */
0N/Aclass CalendarBuilder {
0N/A /*
0N/A * Pseudo time stamp constants used in java.util.Calendar
0N/A */
0N/A private static final int UNSET = 0;
0N/A private static final int COMPUTED = 1;
0N/A private static final int MINIMUM_USER_STAMP = 2;
0N/A
0N/A private static final int MAX_FIELD = FIELD_COUNT + 1;
0N/A
0N/A public static final int WEEK_YEAR = FIELD_COUNT;
0N/A public static final int ISO_DAY_OF_WEEK = 1000; // pseudo field index
0N/A
0N/A // stamp[] (lower half) and field[] (upper half) combined
0N/A private final int[] field;
0N/A private int nextStamp;
0N/A private int maxFieldIndex;
0N/A
0N/A CalendarBuilder() {
0N/A field = new int[MAX_FIELD * 2];
0N/A nextStamp = MINIMUM_USER_STAMP;
0N/A maxFieldIndex = -1;
0N/A }
0N/A
0N/A CalendarBuilder set(int index, int value) {
0N/A if (index == ISO_DAY_OF_WEEK) {
0N/A index = DAY_OF_WEEK;
0N/A value = toCalendarDayOfWeek(value);
0N/A }
0N/A field[index] = nextStamp++;
0N/A field[MAX_FIELD + index] = value;
0N/A if (index > maxFieldIndex && index < FIELD_COUNT) {
0N/A maxFieldIndex = index;
0N/A }
0N/A return this;
0N/A }
0N/A
0N/A CalendarBuilder addYear(int value) {
0N/A field[MAX_FIELD + YEAR] += value;
0N/A field[MAX_FIELD + WEEK_YEAR] += value;
0N/A return this;
0N/A }
0N/A
0N/A boolean isSet(int index) {
0N/A if (index == ISO_DAY_OF_WEEK) {
0N/A index = DAY_OF_WEEK;
0N/A }
0N/A return field[index] > UNSET;
0N/A }
0N/A
0N/A CalendarBuilder clear(int index) {
0N/A if (index == ISO_DAY_OF_WEEK) {
0N/A index = DAY_OF_WEEK;
0N/A }
0N/A field[index] = UNSET;
0N/A field[MAX_FIELD + index] = 0;
0N/A return this;
0N/A }
0N/A
0N/A Calendar establish(Calendar cal) {
0N/A boolean weekDate = isSet(WEEK_YEAR)
0N/A && field[WEEK_YEAR] > field[YEAR];
0N/A if (weekDate && !cal.isWeekDateSupported()) {
0N/A // Use YEAR instead
0N/A if (!isSet(YEAR)) {
0N/A set(YEAR, field[MAX_FIELD + WEEK_YEAR]);
0N/A }
0N/A weekDate = false;
0N/A }
0N/A
0N/A cal.clear();
0N/A // Set the fields from the min stamp to the max stamp so that
0N/A // the field resolution works in the Calendar.
0N/A for (int stamp = MINIMUM_USER_STAMP; stamp < nextStamp; stamp++) {
0N/A for (int index = 0; index <= maxFieldIndex; index++) {
0N/A if (field[index] == stamp) {
0N/A cal.set(index, field[MAX_FIELD + index]);
0N/A break;
0N/A }
0N/A }
0N/A }
0N/A
0N/A if (weekDate) {
0N/A int weekOfYear = isSet(WEEK_OF_YEAR) ? field[MAX_FIELD + WEEK_OF_YEAR] : 1;
0N/A int dayOfWeek = isSet(DAY_OF_WEEK) ?
0N/A field[MAX_FIELD + DAY_OF_WEEK] : cal.getFirstDayOfWeek();
0N/A if (!isValidDayOfWeek(dayOfWeek) && cal.isLenient()) {
0N/A if (dayOfWeek >= 8) {
0N/A dayOfWeek--;
0N/A weekOfYear += dayOfWeek / 7;
0N/A dayOfWeek = (dayOfWeek % 7) + 1;
0N/A } else {
0N/A while (dayOfWeek <= 0) {
0N/A dayOfWeek += 7;
0N/A weekOfYear--;
0N/A }
0N/A }
0N/A dayOfWeek = toCalendarDayOfWeek(dayOfWeek);
0N/A }
0N/A cal.setWeekDate(field[MAX_FIELD + WEEK_YEAR], weekOfYear, dayOfWeek);
0N/A }
0N/A return cal;
0N/A }
0N/A
0N/A public String toString() {
0N/A StringBuilder sb = new StringBuilder();
0N/A sb.append("CalendarBuilder:[");
0N/A for (int i = 0; i < field.length; i++) {
0N/A if (isSet(i)) {
0N/A sb.append(i).append('=').append(field[MAX_FIELD + i]).append(',');
0N/A }
0N/A }
0N/A int lastIndex = sb.length() - 1;
0N/A if (sb.charAt(lastIndex) == ',') {
0N/A sb.setLength(lastIndex);
0N/A }
0N/A sb.append(']');
0N/A return sb.toString();
0N/A }
0N/A
0N/A static int toISODayOfWeek(int calendarDayOfWeek) {
0N/A return calendarDayOfWeek == SUNDAY ? 7 : calendarDayOfWeek - 1;
0N/A }
0N/A
0N/A static int toCalendarDayOfWeek(int isoDayOfWeek) {
0N/A if (!isValidDayOfWeek(isoDayOfWeek)) {
0N/A // adjust later for lenient mode
0N/A return isoDayOfWeek;
0N/A }
0N/A return isoDayOfWeek == 7 ? SUNDAY : isoDayOfWeek + 1;
0N/A }
0N/A
0N/A static boolean isValidDayOfWeek(int dayOfWeek) {
0N/A return dayOfWeek > 0 && dayOfWeek <= 7;
0N/A }
0N/A}
0N/A