/***** BEGIN LICENSE BLOCK *****
* Version: CPL 1.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Common Public
* License Version 1.0 (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.eclipse.org/legal/cpl-v10.html
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* Copyright (C) 2002 Jan Arne Petersen <jpetersen@uni-bonn.de>
* Copyright (C) 2004 Charles O Nutter <headius@headius.com>
* Copyright (C) 2004 Anders Bengtsson <ndrsbngtssn@yahoo.se>
* Copyright (C) 2004 Stefan Matthias Aust <sma@3plus4.de>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the CPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the CPL, the GPL or the LGPL.
***** END LICENSE BLOCK *****/
package org.jruby.util;
import java.text.DateFormat;
import java.text.DateFormatSymbols;
import java.text.FieldPosition;
import java.text.ParsePosition;
import java.util.Calendar;
import java.util.Date;
import java.util.LinkedList;
import java.util.List;
import java.util.Locale;
import org.joda.time.DateTime;
public class RubyDateFormat extends DateFormat {
private static final long serialVersionUID = -250429218019023997L;
private List<Token> compiledPattern;
private final DateFormatSymbols formatSymbols;
private static final int FORMAT_STRING = 0;
private static final int FORMAT_WEEK_LONG = 1;
private static final int FORMAT_WEEK_SHORT = 2;
private static final int FORMAT_MONTH_LONG = 3;
private static final int FORMAT_MONTH_SHORT = 4;
private static final int FORMAT_DAY = 5;
private static final int FORMAT_DAY_S = 6;
private static final int FORMAT_HOUR = 7;
private static final int FORMAT_HOUR_M = 8;
private static final int FORMAT_DAY_YEAR = 9;
private static final int FORMAT_MINUTES = 10;
private static final int FORMAT_MONTH = 11;
private static final int FORMAT_MERIDIAN = 12;
private static final int FORMAT_SECONDS = 13;
private static final int FORMAT_WEEK_YEAR_S = 14;
private static final int FORMAT_WEEK_YEAR_M = 15;
private static final int FORMAT_DAY_WEEK = 16;
private static final int FORMAT_YEAR_LONG = 17;
private static final int FORMAT_YEAR_SHORT = 18;
private static final int FORMAT_ZONE_OFF = 19;
private static final int FORMAT_ZONE_ID = 20;
private static class Token {
private int format;
private Object data;
public Token(int format) {
this(format, null);
}
public Token(int format, Object data) {
this.format = format;
this.data = data;
}
/**
* Gets the data.
* @return Returns a Object
*/
public Object getData() {
return data;
}
/**
* Gets the format.
* @return Returns a int
*/
public int getFormat() {
return format;
}
}
/**
* Constructor for RubyDateFormat.
*/
public RubyDateFormat() {
this("", new DateFormatSymbols());
}
public RubyDateFormat(String pattern, Locale aLocale) {
this(pattern, new DateFormatSymbols(aLocale));
}
public RubyDateFormat(String pattern, DateFormatSymbols formatSymbols) {
super();
this.formatSymbols = formatSymbols;
applyPattern(pattern);
}
public void applyPattern(String pattern) {
compilePattern(pattern);
}
private void compilePattern(String pattern) {
compiledPattern = new LinkedList<Token>();
int len = pattern.length();
for (int i = 0; i < len;) {
if (pattern.charAt(i) == '%') {
i++;
switch (pattern.charAt(i)) {
case 'A' :
compiledPattern.add(new Token(FORMAT_WEEK_LONG));
break;
case 'a' :
compiledPattern.add(new Token(FORMAT_WEEK_SHORT));
break;
case 'B' :
compiledPattern.add(new Token(FORMAT_MONTH_LONG));
break;
case 'b' :
compiledPattern.add(new Token(FORMAT_MONTH_SHORT));
break;
case 'c' :
compiledPattern.add(new Token(FORMAT_WEEK_SHORT));
compiledPattern.add(new Token(FORMAT_STRING, " "));
compiledPattern.add(new Token(FORMAT_MONTH_SHORT));
compiledPattern.add(new Token(FORMAT_STRING, " "));
compiledPattern.add(new Token(FORMAT_DAY));
compiledPattern.add(new Token(FORMAT_STRING, " "));
compiledPattern.add(new Token(FORMAT_HOUR));
compiledPattern.add(new Token(FORMAT_STRING, ":"));
compiledPattern.add(new Token(FORMAT_MINUTES));
compiledPattern.add(new Token(FORMAT_STRING, ":"));
compiledPattern.add(new Token(FORMAT_SECONDS));
compiledPattern.add(new Token(FORMAT_STRING, " "));
compiledPattern.add(new Token(FORMAT_YEAR_LONG));
break;
case 'D':
compiledPattern.add(new Token(FORMAT_MONTH));
compiledPattern.add(new Token(FORMAT_STRING, "/"));
compiledPattern.add(new Token(FORMAT_DAY));
compiledPattern.add(new Token(FORMAT_STRING, "/"));
compiledPattern.add(new Token(FORMAT_YEAR_SHORT));
break;
case 'd':
compiledPattern.add(new Token(FORMAT_DAY));
break;
case 'e':
compiledPattern.add(new Token(FORMAT_DAY_S));
break;
case 'F':
compiledPattern.add(new Token(FORMAT_YEAR_LONG));
compiledPattern.add(new Token(FORMAT_STRING, "-"));
compiledPattern.add(new Token(FORMAT_MONTH));
compiledPattern.add(new Token(FORMAT_STRING, "-"));
compiledPattern.add(new Token(FORMAT_DAY));
break;
case 'H':
compiledPattern.add(new Token(FORMAT_HOUR));
break;
case 'I':
compiledPattern.add(new Token(FORMAT_HOUR_M));
break;
case 'j':
compiledPattern.add(new Token(FORMAT_DAY_YEAR));
break;
case 'M':
compiledPattern.add(new Token(FORMAT_MINUTES));
break;
case 'm':
compiledPattern.add(new Token(FORMAT_MONTH));
break;
case 'p':
compiledPattern.add(new Token(FORMAT_MERIDIAN));
break;
case 'S':
compiledPattern.add(new Token(FORMAT_SECONDS));
break;
case 'T':
compiledPattern.add(new Token(FORMAT_HOUR));
compiledPattern.add(new Token(FORMAT_STRING, ":"));
compiledPattern.add(new Token(FORMAT_MINUTES));
compiledPattern.add(new Token(FORMAT_STRING, ":"));
compiledPattern.add(new Token(FORMAT_SECONDS));
break;
case 'U':
compiledPattern.add(new Token(FORMAT_WEEK_YEAR_S));
break;
case 'W':
compiledPattern.add(new Token(FORMAT_WEEK_YEAR_M));
break;
case 'w':
compiledPattern.add(new Token(FORMAT_DAY_WEEK));
break;
case 'X':
compiledPattern.add(new Token(FORMAT_HOUR));
compiledPattern.add(new Token(FORMAT_STRING, ":"));
compiledPattern.add(new Token(FORMAT_MINUTES));
compiledPattern.add(new Token(FORMAT_STRING, ":"));
compiledPattern.add(new Token(FORMAT_SECONDS));
break;
case 'x':
compiledPattern.add(new Token(FORMAT_MONTH));
compiledPattern.add(new Token(FORMAT_STRING, "/"));
compiledPattern.add(new Token(FORMAT_DAY));
compiledPattern.add(new Token(FORMAT_STRING, "/"));
compiledPattern.add(new Token(FORMAT_YEAR_SHORT));
break;
case 'Y':
compiledPattern.add(new Token(FORMAT_YEAR_LONG));
break;
case 'y':
compiledPattern.add(new Token(FORMAT_YEAR_SHORT));
break;
case 'Z':
compiledPattern.add(new Token(FORMAT_ZONE_ID));
break;
case 'z':
compiledPattern.add(new Token(FORMAT_ZONE_OFF));
break;
case '%':
compiledPattern.add(new Token(FORMAT_STRING, "%"));
break;
default:
compiledPattern.add(new Token(FORMAT_STRING, "%" + pattern.charAt(i)));
}
i++;
} else {
StringBuilder sb = new StringBuilder();
for (;i < len && pattern.charAt(i) != '%'; i++) {
sb.append(pattern.charAt(i));
}
compiledPattern.add(new Token(FORMAT_STRING, sb.toString()));
}
}
}
private DateTime dt;
public void setDateTime(final DateTime dt) {
this.dt = dt;
}
/**
* @see DateFormat#format(Date, StringBuffer, FieldPosition)
*/
public StringBuffer format(Date ignored, StringBuffer toAppendTo, FieldPosition fieldPosition) {
for (Token token: compiledPattern) {
switch (token.getFormat()) {
case FORMAT_STRING:
toAppendTo.append(token.getData());
break;
case FORMAT_WEEK_LONG:
// This is GROSS, but Java API's aren't ISO 8601 compliant at all
int v = (dt.getDayOfWeek()+1)%8;
if(v == 0) {
v++;
}
toAppendTo.append(formatSymbols.getWeekdays()[v]);
break;
case FORMAT_WEEK_SHORT:
// This is GROSS, but Java API's aren't ISO 8601 compliant at all
v = (dt.getDayOfWeek()+1)%8;
if(v == 0) {
v++;
}
toAppendTo.append(formatSymbols.getShortWeekdays()[v]);
break;
case FORMAT_MONTH_LONG:
toAppendTo.append(formatSymbols.getMonths()[dt.getMonthOfYear()-1]);
break;
case FORMAT_MONTH_SHORT:
toAppendTo.append(formatSymbols.getShortMonths()[dt.getMonthOfYear()-1]);
break;
case FORMAT_DAY:
int value = dt.getDayOfMonth();
if (value < 10) {
toAppendTo.append('0');
}
toAppendTo.append(value);
break;
case FORMAT_DAY_S:
value = dt.getDayOfMonth();
if (value < 10) {
toAppendTo.append(' ');
}
toAppendTo.append(value);
break;
case FORMAT_HOUR:
value = dt.getHourOfDay();
if (value < 10) {
toAppendTo.append('0');
}
toAppendTo.append(value);
break;
case FORMAT_HOUR_M:
value = dt.getHourOfDay();
if(value > 12) {
value-=12;
}
if(value == 0) {
toAppendTo.append("12");
} else {
if (value < 10) {
toAppendTo.append('0');
}
toAppendTo.append(value);
}
break;
case FORMAT_DAY_YEAR:
value = dt.getDayOfYear();
if (value < 10) {
toAppendTo.append("00");
} else if (value < 100) {
toAppendTo.append('0');
}
toAppendTo.append(value);
break;
case FORMAT_MINUTES:
value = dt.getMinuteOfHour();
if (value < 10) {
toAppendTo.append('0');
}
toAppendTo.append(value);
break;
case FORMAT_MONTH:
value = dt.getMonthOfYear();
if (value < 10) {
toAppendTo.append('0');
}
toAppendTo.append(value);
break;
case FORMAT_MERIDIAN:
if (dt.getHourOfDay() < 12) {
toAppendTo.append("AM");
} else {
toAppendTo.append("PM");
}
break;
case FORMAT_SECONDS:
value = dt.getSecondOfMinute();
if (value < 10) {
toAppendTo.append('0');
}
toAppendTo.append(value);
break;
case FORMAT_WEEK_YEAR_M:
formatWeekYear(java.util.Calendar.MONDAY, toAppendTo);
break;
// intentional fall-through
case FORMAT_WEEK_YEAR_S:
formatWeekYear(java.util.Calendar.SUNDAY, toAppendTo);
break;
case FORMAT_DAY_WEEK:
value = dt.getDayOfWeek() ;
toAppendTo.append(value);
break;
case FORMAT_YEAR_LONG:
value = dt.getYear();
if (value < 10) {
toAppendTo.append("000");
} else if (value < 100) {
toAppendTo.append("00");
} else if (value < 1000) {
toAppendTo.append('0');
}
toAppendTo.append(value);
break;
case FORMAT_YEAR_SHORT:
value = dt.getYear() % 100;
if (value < 10) {
toAppendTo.append('0');
}
toAppendTo.append(value);
break;
case FORMAT_ZONE_OFF:
value = dt.getZone().getOffset(dt.getMillis());
if (value <= 0) {
toAppendTo.append('-');
} else {
toAppendTo.append('+');
}
value = Math.abs(value);
if (value / 3600000 < 10) {
toAppendTo.append('0');
}
toAppendTo.append(value / 3600000);
value = value % 3600000 / 60000;
if (value < 10) {
toAppendTo.append('0');
}
toAppendTo.append(value);
break;
case FORMAT_ZONE_ID:
toAppendTo.append(dt.getZone().getShortName(dt.getMillis()));
break;
}
}
return toAppendTo;
}
private void formatWeekYear(int firstDayOfWeek, StringBuffer toAppendTo) {
java.util.Calendar calendar = dt.toGregorianCalendar();
calendar.setFirstDayOfWeek(firstDayOfWeek);
calendar.setMinimalDaysInFirstWeek(7);
int value = calendar.get(java.util.Calendar.WEEK_OF_YEAR);
if ((value == 52 || value == 53)
&& (calendar.get(Calendar.MONTH) == Calendar.JANUARY )) {
// MRI behavior: Week values are monotonous.
// So, weeks that effectively belong to previous year,
// will get the value of 0, not 52 or 53, as in Java.
value = 0;
}
if (value < 10) {
toAppendTo.append('0');
}
toAppendTo.append(value);
}
/**
* @see DateFormat#parse(String, ParsePosition)
*/
public Date parse(String source, ParsePosition pos) {
throw new UnsupportedOperationException();
}
}