/***** 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 * Copyright (C) 2004 Charles O Nutter * Copyright (C) 2004 Anders Bengtsson * Copyright (C) 2004 Stefan Matthias Aust * * 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.Iterator; import java.util.LinkedList; import java.util.List; import java.util.Locale; import java.util.TimeZone; public class RubyDateFormat extends DateFormat { private static final long serialVersionUID = -250429218019023997L; private List compiledPattern; private 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(); 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_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 '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 { StringBuffer sb = new StringBuffer(); for (;i < len && pattern.charAt(i) != '%'; i++) { sb.append(pattern.charAt(i)); } compiledPattern.add(new Token(FORMAT_STRING, sb.toString())); } } } /** * @see DateFormat#format(Date, StringBuffer, FieldPosition) */ public StringBuffer format(Date date, StringBuffer toAppendTo, FieldPosition fieldPosition) { calendar.setTime(date); calendar.setMinimalDaysInFirstWeek(1); Iterator iter = compiledPattern.iterator(); while (iter.hasNext()) { Token token = (Token) iter.next(); switch (token.getFormat()) { case FORMAT_STRING: toAppendTo.append(token.getData()); break; case FORMAT_WEEK_LONG: toAppendTo.append(formatSymbols.getWeekdays()[calendar.get(Calendar.DAY_OF_WEEK)]); break; case FORMAT_WEEK_SHORT: toAppendTo.append(formatSymbols.getShortWeekdays()[calendar.get(Calendar.DAY_OF_WEEK)]); break; case FORMAT_MONTH_LONG: toAppendTo.append(formatSymbols.getMonths()[calendar.get(Calendar.MONTH)]); break; case FORMAT_MONTH_SHORT: toAppendTo.append(formatSymbols.getShortMonths()[calendar.get(Calendar.MONTH)]); break; case FORMAT_DAY: int value = calendar.get(Calendar.DAY_OF_MONTH); if (value < 10) { toAppendTo.append('0'); } toAppendTo.append(value); break; case FORMAT_DAY_S: value = calendar.get(Calendar.DAY_OF_MONTH); if (value < 10) { toAppendTo.append(' '); } toAppendTo.append(value); break; case FORMAT_HOUR: value = calendar.get(Calendar.HOUR_OF_DAY); if (value < 10) { toAppendTo.append('0'); } toAppendTo.append(value); break; case FORMAT_HOUR_M: value = calendar.get(Calendar.HOUR); if(value == 0) { toAppendTo.append("12"); } else { if (value < 10) { toAppendTo.append('0'); } toAppendTo.append(value); } break; case FORMAT_DAY_YEAR: value = calendar.get(Calendar.DAY_OF_YEAR); if (value < 10) { toAppendTo.append("00"); } else if (value < 100) { toAppendTo.append('0'); } toAppendTo.append(value); break; case FORMAT_MINUTES: value = calendar.get(Calendar.MINUTE); if (value < 10) { toAppendTo.append('0'); } toAppendTo.append(value); break; case FORMAT_MONTH: value = calendar.get(Calendar.MONTH) + 1; if (value < 10) { toAppendTo.append('0'); } toAppendTo.append(value); break; case FORMAT_MERIDIAN: if (calendar.get(Calendar.AM_PM) == Calendar.AM) { toAppendTo.append("AM"); } else { toAppendTo.append("PM"); } break; case FORMAT_SECONDS: value = calendar.get(Calendar.SECOND); if (value < 10) { toAppendTo.append('0'); } toAppendTo.append(value); break; case FORMAT_WEEK_YEAR_M: formatWeekYear(Calendar.MONDAY, toAppendTo); break; // intentional fall-through case FORMAT_WEEK_YEAR_S: formatWeekYear(Calendar.SUNDAY, toAppendTo); break; case FORMAT_DAY_WEEK: value = calendar.get(Calendar.DAY_OF_WEEK) - 1; toAppendTo.append(value); break; case FORMAT_YEAR_LONG: value = calendar.get(Calendar.YEAR); 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 = calendar.get(Calendar.YEAR) % 100; if (value < 10) { toAppendTo.append('0'); } toAppendTo.append(value); break; case FORMAT_ZONE_OFF: value = calendar.getTimeZone().getOffset(calendar.getTimeInMillis()); 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(calendar.getTimeZone().getDisplayName(calendar.get(Calendar.DST_OFFSET) != 0, TimeZone.SHORT)); break; } } return toAppendTo; } private void formatWeekYear(int firstDayOfWeek, StringBuffer toAppendTo) { calendar.setFirstDayOfWeek(firstDayOfWeek); int value = calendar.get(Calendar.WEEK_OF_YEAR); if (calendar.get(Calendar.DAY_OF_WEEK) != firstDayOfWeek) { value--; } if (value < 10) { toAppendTo.append('0'); } toAppendTo.append(value); calendar.setFirstDayOfWeek(Calendar.SUNDAY); } /** * @see DateFormat#parse(String, ParsePosition) */ public Date parse(String source, ParsePosition pos) { throw new UnsupportedOperationException(); } }