| /* |
| * Copyright (c) 1996, 2008, 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. |
| */ |
| |
| /* |
| * (C) Copyright Taligent, Inc. 1996 - All Rights Reserved |
| * (C) Copyright IBM Corp. 1996-1998 - All Rights Reserved |
| * |
| * The original version of this source code and documentation is copyrighted |
| * and owned by Taligent, Inc., a wholly-owned subsidiary of IBM. These |
| * materials are provided under terms of a License Agreement between Taligent |
| * and Sun. This technology is protected by multiple US and International |
| * patents. This notice and attribution to Taligent may not be removed. |
| * Taligent is a registered trademark of Taligent, Inc. |
| * |
| */ |
| |
| package java.text; |
| |
| import java.io.IOException; |
| import java.io.InvalidObjectException; |
| import java.io.ObjectInputStream; |
| import java.util.Calendar; |
| import java.util.Date; |
| import java.util.GregorianCalendar; |
| import java.util.Hashtable; |
| import java.util.Locale; |
| import java.util.Map; |
| import java.util.MissingResourceException; |
| import java.util.ResourceBundle; |
| import java.util.SimpleTimeZone; |
| import java.util.TimeZone; |
| import sun.util.calendar.CalendarUtils; |
| import sun.util.calendar.ZoneInfoFile; |
| import sun.util.resources.LocaleData; |
| |
| /** |
| * <code>SimpleDateFormat</code> is a concrete class for formatting and |
| * parsing dates in a locale-sensitive manner. It allows for formatting |
| * (date -> text), parsing (text -> date), and normalization. |
| * |
| * <p> |
| * <code>SimpleDateFormat</code> allows you to start by choosing |
| * any user-defined patterns for date-time formatting. However, you |
| * are encouraged to create a date-time formatter with either |
| * <code>getTimeInstance</code>, <code>getDateInstance</code>, or |
| * <code>getDateTimeInstance</code> in <code>DateFormat</code>. Each |
| * of these class methods can return a date/time formatter initialized |
| * with a default format pattern. You may modify the format pattern |
| * using the <code>applyPattern</code> methods as desired. |
| * For more information on using these methods, see |
| * {@link DateFormat}. |
| * |
| * <h4>Date and Time Patterns</h4> |
| * <p> |
| * Date and time formats are specified by <em>date and time pattern</em> |
| * strings. |
| * Within date and time pattern strings, unquoted letters from |
| * <code>'A'</code> to <code>'Z'</code> and from <code>'a'</code> to |
| * <code>'z'</code> are interpreted as pattern letters representing the |
| * components of a date or time string. |
| * Text can be quoted using single quotes (<code>'</code>) to avoid |
| * interpretation. |
| * <code>"''"</code> represents a single quote. |
| * All other characters are not interpreted; they're simply copied into the |
| * output string during formatting or matched against the input string |
| * during parsing. |
| * <p> |
| * The following pattern letters are defined (all other characters from |
| * <code>'A'</code> to <code>'Z'</code> and from <code>'a'</code> to |
| * <code>'z'</code> are reserved): |
| * <blockquote> |
| * <table border=0 cellspacing=3 cellpadding=0 summary="Chart shows pattern letters, date/time component, presentation, and examples."> |
| * <tr bgcolor="#ccccff"> |
| * <th align=left>Letter |
| * <th align=left>Date or Time Component |
| * <th align=left>Presentation |
| * <th align=left>Examples |
| * <tr> |
| * <td><code>G</code> |
| * <td>Era designator |
| * <td><a href="#text">Text</a> |
| * <td><code>AD</code> |
| * <tr bgcolor="#eeeeff"> |
| * <td><code>y</code> |
| * <td>Year |
| * <td><a href="#year">Year</a> |
| * <td><code>1996</code>; <code>96</code> |
| * <tr> |
| * <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"> |
| * <td><code>w</code> |
| * <td>Week in year |
| * <td><a href="#number">Number</a> |
| * <td><code>27</code> |
| * <tr> |
| * <td><code>W</code> |
| * <td>Week in month |
| * <td><a href="#number">Number</a> |
| * <td><code>2</code> |
| * <tr bgcolor="#eeeeff"> |
| * <td><code>D</code> |
| * <td>Day in year |
| * <td><a href="#number">Number</a> |
| * <td><code>189</code> |
| * <tr> |
| * <td><code>d</code> |
| * <td>Day in month |
| * <td><a href="#number">Number</a> |
| * <td><code>10</code> |
| * <tr bgcolor="#eeeeff"> |
| * <td><code>F</code> |
| * <td>Day of week in month |
| * <td><a href="#number">Number</a> |
| * <td><code>2</code> |
| * <tr> |
| * <td><code>E</code> |
| * <td>Day in week |
| * <td><a href="#text">Text</a> |
| * <td><code>Tuesday</code>; <code>Tue</code> |
| * <tr bgcolor="#eeeeff"> |
| * <td><code>a</code> |
| * <td>Am/pm marker |
| * <td><a href="#text">Text</a> |
| * <td><code>PM</code> |
| * <tr> |
| * <td><code>H</code> |
| * <td>Hour in day (0-23) |
| * <td><a href="#number">Number</a> |
| * <td><code>0</code> |
| * <tr bgcolor="#eeeeff"> |
| * <td><code>k</code> |
| * <td>Hour in day (1-24) |
| * <td><a href="#number">Number</a> |
| * <td><code>24</code> |
| * <tr> |
| * <td><code>K</code> |
| * <td>Hour in am/pm (0-11) |
| * <td><a href="#number">Number</a> |
| * <td><code>0</code> |
| * <tr bgcolor="#eeeeff"> |
| * <td><code>h</code> |
| * <td>Hour in am/pm (1-12) |
| * <td><a href="#number">Number</a> |
| * <td><code>12</code> |
| * <tr> |
| * <td><code>m</code> |
| * <td>Minute in hour |
| * <td><a href="#number">Number</a> |
| * <td><code>30</code> |
| * <tr bgcolor="#eeeeff"> |
| * <td><code>s</code> |
| * <td>Second in minute |
| * <td><a href="#number">Number</a> |
| * <td><code>55</code> |
| * <tr> |
| * <td><code>S</code> |
| * <td>Millisecond |
| * <td><a href="#number">Number</a> |
| * <td><code>978</code> |
| * <tr bgcolor="#eeeeff"> |
| * <td><code>z</code> |
| * <td>Time zone |
| * <td><a href="#timezone">General time zone</a> |
| * <td><code>Pacific Standard Time</code>; <code>PST</code>; <code>GMT-08:00</code> |
| * <tr> |
| * <td><code>Z</code> |
| * <td>Time zone |
| * <td><a href="#rfc822timezone">RFC 822 time zone</a> |
| * <td><code>-0800</code> |
| * </table> |
| * </blockquote> |
| * Pattern letters are usually repeated, as their number determines the |
| * exact presentation: |
| * <ul> |
| * <li><strong><a name="text">Text:</a></strong> |
| * For formatting, if the number of pattern letters is 4 or more, |
| * 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. |
| * <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. |
| * <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> |
| * <ul> |
| * <li>For formatting, if the number of pattern letters is 2, the year |
| * is truncated to 2 digits; otherwise it is interpreted as a |
| * <a href="#number">number</a>. |
| * <li>For parsing, if the number of pattern letters is more than 2, |
| * the year is interpreted literally, regardless of the number of |
| * digits. So using the pattern "MM/dd/yyyy", "01/11/12" parses to |
| * Jan 11, 12 A.D. |
| * <li>For parsing with the abbreviated year pattern ("y" or "yy"), |
| * <code>SimpleDateFormat</code> must interpret the abbreviated year |
| * relative to some century. It does this by adjusting dates to be |
| * within 80 years before and 20 years after the time the <code>SimpleDateFormat</code> |
| * instance is created. For example, using a pattern of "MM/dd/yy" and a |
| * <code>SimpleDateFormat</code> instance created on Jan 1, 1997, the string |
| * "01/11/12" would be interpreted as Jan 11, 2012 while the string "05/04/64" |
| * would be interpreted as May 4, 1964. |
| * During parsing, only strings consisting of exactly two digits, as defined by |
| * {@link Character#isDigit(char)}, will be parsed into the default century. |
| * Any other numeric string, such as a one digit string, a three or more digit |
| * string, or a two digit string that isn't all digits (for example, "-1"), is |
| * interpreted literally. So "01/02/3" or "01/02/003" are parsed, using the |
| * same pattern, as Jan 2, 3 AD. Likewise, "01/02/-3" is parsed as Jan 2, 4 BC. |
| * </ul> |
| * Otherwise, calendar system specific forms are applied. |
| * For both formatting and parsing, if the number of pattern |
| * 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. |
| * <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>. |
| * <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 |
| * following syntax is used: |
| * <pre> |
| * <a name="GMTOffsetTimeZone"><i>GMTOffsetTimeZone:</i></a> |
| * <code>GMT</code> <i>Sign</i> <i>Hours</i> <code>:</code> <i>Minutes</i> |
| * <i>Sign:</i> one of |
| * <code>+ -</code> |
| * <i>Hours:</i> |
| * <i>Digit</i> |
| * <i>Digit</i> <i>Digit</i> |
| * <i>Minutes:</i> |
| * <i>Digit</i> <i>Digit</i> |
| * <i>Digit:</i> one of |
| * <code>0 1 2 3 4 5 6 7 8 9</code></pre> |
| * <i>Hours</i> must be between 0 and 23, and <i>Minutes</i> must be between |
| * 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. |
| * <li><strong><a name="rfc822timezone">RFC 822 time zone:</a></strong> |
| * For formatting, the RFC 822 4-digit time zone format is used: |
| * <pre> |
| * <i>RFC822TimeZone:</i> |
| * <i>Sign</i> <i>TwoDigitHours</i> <i>Minutes</i> |
| * <i>TwoDigitHours:</i> |
| * <i>Digit Digit</i></pre> |
| * <i>TwoDigitHours</i> must be between 00 and 23. Other definitions |
| * are as for <a href="#timezone">general time zones</a>. |
| * <p>For parsing, <a href="#timezone">general time zones</a> are also |
| * accepted. |
| * </ul> |
| * <code>SimpleDateFormat</code> also supports <em>localized date and time |
| * pattern</em> strings. In these strings, the pattern letters described above |
| * may be replaced with other, locale dependent, pattern letters. |
| * <code>SimpleDateFormat</code> does not deal with the localization of text |
| * other than the pattern letters; that's up to the client of the class. |
| * <p> |
| * |
| * <h4>Examples</h4> |
| * |
| * The following examples show how date and time patterns are interpreted in |
| * the U.S. locale. The given date and time are 2001-07-04 12:08:56 local time |
| * in the U.S. Pacific Time time zone. |
| * <blockquote> |
| * <table border=0 cellspacing=3 cellpadding=0 summary="Examples of date and time patterns interpreted in the U.S. locale"> |
| * <tr bgcolor="#ccccff"> |
| * <th align=left>Date and Time Pattern |
| * <th align=left>Result |
| * <tr> |
| * <td><code>"yyyy.MM.dd G 'at' HH:mm:ss z"</code> |
| * <td><code>2001.07.04 AD at 12:08:56 PDT</code> |
| * <tr bgcolor="#eeeeff"> |
| * <td><code>"EEE, MMM d, ''yy"</code> |
| * <td><code>Wed, Jul 4, '01</code> |
| * <tr> |
| * <td><code>"h:mm a"</code> |
| * <td><code>12:08 PM</code> |
| * <tr bgcolor="#eeeeff"> |
| * <td><code>"hh 'o''clock' a, zzzz"</code> |
| * <td><code>12 o'clock PM, Pacific Daylight Time</code> |
| * <tr> |
| * <td><code>"K:mm a, z"</code> |
| * <td><code>0:08 PM, PDT</code> |
| * <tr bgcolor="#eeeeff"> |
| * <td><code>"yyyyy.MMMMM.dd GGG hh:mm aaa"</code> |
| * <td><code>02001.July.04 AD 12:08 PM</code> |
| * <tr> |
| * <td><code>"EEE, d MMM yyyy HH:mm:ss Z"</code> |
| * <td><code>Wed, 4 Jul 2001 12:08:56 -0700</code> |
| * <tr bgcolor="#eeeeff"> |
| * <td><code>"yyMMddHHmmssZ"</code> |
| * <td><code>010704120856-0700</code> |
| * <tr> |
| * <td><code>"yyyy-MM-dd'T'HH:mm:ss.SSSZ"</code> |
| * <td><code>2001-07-04T12:08:56.235-0700</code> |
| * </table> |
| * </blockquote> |
| * |
| * <h4><a name="synchronization">Synchronization</a></h4> |
| * |
| * <p> |
| * Date formats are not synchronized. |
| * It is recommended to create separate format instances for each thread. |
| * If multiple threads access a format concurrently, it must be synchronized |
| * externally. |
| * |
| * @see <a href="http://java.sun.com/docs/books/tutorial/i18n/format/simpleDateFormat.html">Java Tutorial</a> |
| * @see java.util.Calendar |
| * @see java.util.TimeZone |
| * @see DateFormat |
| * @see DateFormatSymbols |
| * @author Mark Davis, Chen-Lieh Huang, Alan Liu |
| */ |
| public class SimpleDateFormat extends DateFormat { |
| |
| // the official serial version ID which says cryptically |
| // which version we're compatible with |
| static final long serialVersionUID = 4774881970558875024L; |
| |
| // the internal serial version which says which version was written |
| // - 0 (default) for version up to JDK 1.1.3 |
| // - 1 for version from JDK 1.1.4, which includes a new field |
| static final int currentSerialVersion = 1; |
| |
| /** |
| * The version of the serialized data on the stream. Possible values: |
| * <ul> |
| * <li><b>0</b> or not present on stream: JDK 1.1.3. This version |
| * has no <code>defaultCenturyStart</code> on stream. |
| * <li><b>1</b> JDK 1.1.4 or later. This version adds |
| * <code>defaultCenturyStart</code>. |
| * </ul> |
| * When streaming out this class, the most recent format |
| * and the highest allowable <code>serialVersionOnStream</code> |
| * is written. |
| * @serial |
| * @since JDK1.1.4 |
| */ |
| private int serialVersionOnStream = currentSerialVersion; |
| |
| /** |
| * The pattern string of this formatter. This is always a non-localized |
| * pattern. May not be null. See class documentation for details. |
| * @serial |
| */ |
| private String pattern; |
| |
| /** |
| * Saved numberFormat and pattern. |
| * @see SimpleDateFormat#checkNegativeNumberExpression |
| */ |
| transient private NumberFormat originalNumberFormat; |
| transient private String originalNumberPattern; |
| |
| /** |
| * The minus sign to be used with format and parse. |
| */ |
| transient private char minusSign = '-'; |
| |
| /** |
| * True when a negative sign follows a number. |
| * (True as default in Arabic.) |
| */ |
| transient private boolean hasFollowingMinusSign = false; |
| |
| /** |
| * The compiled pattern. |
| */ |
| transient private char[] compiledPattern; |
| |
| /** |
| * Tags for the compiled pattern. |
| */ |
| private final static int TAG_QUOTE_ASCII_CHAR = 100; |
| private final static int TAG_QUOTE_CHARS = 101; |
| |
| /** |
| * Locale dependent digit zero. |
| * @see #zeroPaddingNumber |
| * @see java.text.DecimalFormatSymbols#getZeroDigit |
| */ |
| transient private char zeroDigit; |
| |
| /** |
| * The symbols used by this formatter for week names, month names, |
| * etc. May not be null. |
| * @serial |
| * @see java.text.DateFormatSymbols |
| */ |
| private DateFormatSymbols formatData; |
| |
| /** |
| * We map dates with two-digit years into the century starting at |
| * <code>defaultCenturyStart</code>, which may be any date. May |
| * not be null. |
| * @serial |
| * @since JDK1.1.4 |
| */ |
| private Date defaultCenturyStart; |
| |
| transient private int defaultCenturyStartYear; |
| |
| private static final int MILLIS_PER_MINUTE = 60 * 1000; |
| |
| // For time zones that have no names, use strings GMT+minutes and |
| // GMT-minutes. For instance, in France the time zone is GMT+60. |
| private static final String GMT = "GMT"; |
| |
| /** |
| * Cache to hold the DateTimePatterns of a Locale. |
| */ |
| private static Hashtable<String,String[]> cachedLocaleData |
| = new Hashtable<String,String[]>(3); |
| |
| /** |
| * Cache NumberFormat instances with Locale key. |
| */ |
| private static Hashtable<Locale,NumberFormat> cachedNumberFormatData |
| = new Hashtable<Locale,NumberFormat>(3); |
| |
| /** |
| * The Locale used to instantiate this |
| * <code>SimpleDateFormat</code>. The value may be null if this object |
| * has been created by an older <code>SimpleDateFormat</code> and |
| * deserialized. |
| * |
| * @serial |
| * @since 1.6 |
| */ |
| private Locale locale; |
| |
| /** |
| * Indicates whether this <code>SimpleDateFormat</code> should use |
| * the DateFormatSymbols. If true, the format and parse methods |
| * use the DateFormatSymbols values. If false, the format and |
| * parse methods call Calendar.getDisplayName or |
| * Calendar.getDisplayNames. |
| */ |
| transient boolean useDateFormatSymbols; |
| |
| /** |
| * Constructs a <code>SimpleDateFormat</code> using the default pattern and |
| * date format symbols for the default locale. |
| * <b>Note:</b> This constructor may not support all locales. |
| * For full coverage, use the factory methods in the {@link DateFormat} |
| * class. |
| */ |
| public SimpleDateFormat() { |
| this(SHORT, SHORT, Locale.getDefault()); |
| } |
| |
| /** |
| * Constructs a <code>SimpleDateFormat</code> using the given pattern and |
| * the default date format symbols for the default locale. |
| * <b>Note:</b> This constructor may not support all locales. |
| * For full coverage, use the factory methods in the {@link DateFormat} |
| * class. |
| * |
| * @param pattern the pattern describing the date and time format |
| * @exception NullPointerException if the given pattern is null |
| * @exception IllegalArgumentException if the given pattern is invalid |
| */ |
| public SimpleDateFormat(String pattern) |
| { |
| this(pattern, Locale.getDefault()); |
| } |
| |
| /** |
| * Constructs a <code>SimpleDateFormat</code> using the given pattern and |
| * the default date format symbols for the given locale. |
| * <b>Note:</b> This constructor may not support all locales. |
| * For full coverage, use the factory methods in the {@link DateFormat} |
| * class. |
| * |
| * @param pattern the pattern describing the date and time format |
| * @param locale the locale whose date format symbols should be used |
| * @exception NullPointerException if the given pattern or locale is null |
| * @exception IllegalArgumentException if the given pattern is invalid |
| */ |
| public SimpleDateFormat(String pattern, Locale locale) |
| { |
| if (pattern == null || locale == null) { |
| throw new NullPointerException(); |
| } |
| |
| initializeCalendar(locale); |
| this.pattern = pattern; |
| this.formatData = DateFormatSymbols.getInstance(locale); |
| this.locale = locale; |
| initialize(locale); |
| } |
| |
| /** |
| * Constructs a <code>SimpleDateFormat</code> using the given pattern and |
| * date format symbols. |
| * |
| * @param pattern the pattern describing the date and time format |
| * @param formatSymbols the date format symbols to be used for formatting |
| * @exception NullPointerException if the given pattern or formatSymbols is null |
| * @exception IllegalArgumentException if the given pattern is invalid |
| */ |
| public SimpleDateFormat(String pattern, DateFormatSymbols formatSymbols) |
| { |
| if (pattern == null || formatSymbols == null) { |
| throw new NullPointerException(); |
| } |
| |
| this.pattern = pattern; |
| this.formatData = (DateFormatSymbols) formatSymbols.clone(); |
| this.locale = Locale.getDefault(); |
| initializeCalendar(this.locale); |
| initialize(this.locale); |
| useDateFormatSymbols = true; |
| } |
| |
| /* Package-private, called by DateFormat factory methods */ |
| SimpleDateFormat(int timeStyle, int dateStyle, Locale loc) { |
| if (loc == null) { |
| throw new NullPointerException(); |
| } |
| |
| this.locale = loc; |
| // initialize calendar and related fields |
| initializeCalendar(loc); |
| |
| /* try the cache first */ |
| String key = getKey(); |
| String[] dateTimePatterns = cachedLocaleData.get(key); |
| if (dateTimePatterns == null) { /* cache miss */ |
| ResourceBundle r = LocaleData.getDateFormatData(loc); |
| if (!isGregorianCalendar()) { |
| try { |
| dateTimePatterns = r.getStringArray(getCalendarName() + ".DateTimePatterns"); |
| } catch (MissingResourceException e) { |
| } |
| } |
| if (dateTimePatterns == null) { |
| dateTimePatterns = r.getStringArray("DateTimePatterns"); |
| } |
| /* update cache */ |
| cachedLocaleData.put(key, dateTimePatterns); |
| } |
| formatData = DateFormatSymbols.getInstance(loc); |
| if ((timeStyle >= 0) && (dateStyle >= 0)) { |
| Object[] dateTimeArgs = {dateTimePatterns[timeStyle], |
| dateTimePatterns[dateStyle + 4]}; |
| pattern = MessageFormat.format(dateTimePatterns[8], dateTimeArgs); |
| } |
| else if (timeStyle >= 0) { |
| pattern = dateTimePatterns[timeStyle]; |
| } |
| else if (dateStyle >= 0) { |
| pattern = dateTimePatterns[dateStyle + 4]; |
| } |
| else { |
| throw new IllegalArgumentException("No date or time style specified"); |
| } |
| |
| initialize(loc); |
| } |
| |
| /* Initialize compiledPattern and numberFormat fields */ |
| private void initialize(Locale loc) { |
| // Verify and compile the given pattern. |
| compiledPattern = compile(pattern); |
| |
| /* try the cache first */ |
| numberFormat = cachedNumberFormatData.get(loc); |
| if (numberFormat == null) { /* cache miss */ |
| numberFormat = NumberFormat.getIntegerInstance(loc); |
| numberFormat.setGroupingUsed(false); |
| |
| /* update cache */ |
| cachedNumberFormatData.put(loc, numberFormat); |
| } |
| numberFormat = (NumberFormat) numberFormat.clone(); |
| |
| initializeDefaultCentury(); |
| } |
| |
| private void initializeCalendar(Locale loc) { |
| if (calendar == null) { |
| assert loc != null; |
| // The format object must be constructed using the symbols for this zone. |
| // However, the calendar should use the current default TimeZone. |
| // If this is not contained in the locale zone strings, then the zone |
| // will be formatted using generic GMT+/-H:MM nomenclature. |
| calendar = Calendar.getInstance(TimeZone.getDefault(), loc); |
| } |
| } |
| |
| private String getKey() { |
| StringBuilder sb = new StringBuilder(); |
| sb.append(getCalendarName()).append('.'); |
| sb.append(locale.getLanguage()).append('_').append(locale.getCountry()).append('_').append(locale.getVariant()); |
| return sb.toString(); |
| } |
| |
| /** |
| * Returns the compiled form of the given pattern. The syntax of |
| * the compiled pattern is: |
| * <blockquote> |
| * CompiledPattern: |
| * EntryList |
| * EntryList: |
| * Entry |
| * EntryList Entry |
| * Entry: |
| * TagField |
| * TagField data |
| * TagField: |
| * Tag Length |
| * TaggedData |
| * Tag: |
| * pattern_char_index |
| * TAG_QUOTE_CHARS |
| * Length: |
| * short_length |
| * long_length |
| * TaggedData: |
| * TAG_QUOTE_ASCII_CHAR ascii_char |
| * |
| * </blockquote> |
| * |
| * where `short_length' is an 8-bit unsigned integer between 0 and |
| * 254. `long_length' is a sequence of an 8-bit integer 255 and a |
| * 32-bit signed integer value which is split into upper and lower |
| * 16-bit fields in two char's. `pattern_char_index' is an 8-bit |
| * integer between 0 and 18. `ascii_char' is an 7-bit ASCII |
| * character value. `data' depends on its Tag value. |
| * <p> |
| * If Length is short_length, Tag and short_length are packed in a |
| * single char, as illustrated below. |
| * <blockquote> |
| * char[0] = (Tag << 8) | short_length; |
| * </blockquote> |
| * |
| * If Length is long_length, Tag and 255 are packed in the first |
| * char and a 32-bit integer, as illustrated below. |
| * <blockquote> |
| * char[0] = (Tag << 8) | 255; |
| * char[1] = (char) (long_length >>> 16); |
| * char[2] = (char) (long_length & 0xffff); |
| * </blockquote> |
| * <p> |
| * If Tag is a pattern_char_index, its Length is the number of |
| * pattern characters. For example, if the given pattern is |
| * "yyyy", Tag is 1 and Length is 4, followed by no data. |
| * <p> |
| * If Tag is TAG_QUOTE_CHARS, its Length is the number of char's |
| * following the TagField. For example, if the given pattern is |
| * "'o''clock'", Length is 7 followed by a char sequence of |
| * <code>o&nbs;'&nbs;c&nbs;l&nbs;o&nbs;c&nbs;k</code>. |
| * <p> |
| * TAG_QUOTE_ASCII_CHAR is a special tag and has an ASCII |
| * character in place of Length. For example, if the given pattern |
| * is "'o'", the TaggedData entry is |
| * <code>((TAG_QUOTE_ASCII_CHAR&nbs;<<&nbs;8)&nbs;|&nbs;'o')</code>. |
| * |
| * @exception NullPointerException if the given pattern is null |
| * @exception IllegalArgumentException if the given pattern is invalid |
| */ |
| private char[] compile(String pattern) { |
| int length = pattern.length(); |
| boolean inQuote = false; |
| StringBuilder compiledPattern = new StringBuilder(length * 2); |
| StringBuilder tmpBuffer = null; |
| int count = 0; |
| int lastTag = -1; |
| |
| for (int i = 0; i < length; i++) { |
| char c = pattern.charAt(i); |
| |
| if (c == '\'') { |
| // '' is treated as a single quote regardless of being |
| // in a quoted section. |
| if ((i + 1) < length) { |
| c = pattern.charAt(i + 1); |
| if (c == '\'') { |
| i++; |
| if (count != 0) { |
| encode(lastTag, count, compiledPattern); |
| lastTag = -1; |
| count = 0; |
| } |
| if (inQuote) { |
| tmpBuffer.append(c); |
| } else { |
| compiledPattern.append((char)(TAG_QUOTE_ASCII_CHAR << 8 | c)); |
| } |
| continue; |
| } |
| } |
| if (!inQuote) { |
| if (count != 0) { |
| encode(lastTag, count, compiledPattern); |
| lastTag = -1; |
| count = 0; |
| } |
| if (tmpBuffer == null) { |
| tmpBuffer = new StringBuilder(length); |
| } else { |
| tmpBuffer.setLength(0); |
| } |
| inQuote = true; |
| } else { |
| int len = tmpBuffer.length(); |
| if (len == 1) { |
| char ch = tmpBuffer.charAt(0); |
| if (ch < 128) { |
| compiledPattern.append((char)(TAG_QUOTE_ASCII_CHAR << 8 | ch)); |
| } else { |
| compiledPattern.append((char)(TAG_QUOTE_CHARS << 8 | 1)); |
| compiledPattern.append(ch); |
| } |
| } else { |
| encode(TAG_QUOTE_CHARS, len, compiledPattern); |
| compiledPattern.append(tmpBuffer); |
| } |
| inQuote = false; |
| } |
| continue; |
| } |
| if (inQuote) { |
| tmpBuffer.append(c); |
| continue; |
| } |
| if (!(c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z')) { |
| if (count != 0) { |
| encode(lastTag, count, compiledPattern); |
| lastTag = -1; |
| count = 0; |
| } |
| if (c < 128) { |
| // In most cases, c would be a delimiter, such as ':'. |
| compiledPattern.append((char)(TAG_QUOTE_ASCII_CHAR << 8 | c)); |
| } else { |
| // Take any contiguous non-ASCII alphabet characters and |
| // put them in a single TAG_QUOTE_CHARS. |
| int j; |
| for (j = i + 1; j < length; j++) { |
| char d = pattern.charAt(j); |
| if (d == '\'' || (d >= 'a' && d <= 'z' || d >= 'A' && d <= 'Z')) { |
| break; |
| } |
| } |
| compiledPattern.append((char)(TAG_QUOTE_CHARS << 8 | (j - i))); |
| for (; i < j; i++) { |
| compiledPattern.append(pattern.charAt(i)); |
| } |
| i--; |
| } |
| continue; |
| } |
| |
| int tag; |
| if ((tag = DateFormatSymbols.patternChars.indexOf(c)) == -1) { |
| throw new IllegalArgumentException("Illegal pattern character " + |
| "'" + c + "'"); |
| } |
| if (lastTag == -1 || lastTag == tag) { |
| lastTag = tag; |
| count++; |
| continue; |
| } |
| encode(lastTag, count, compiledPattern); |
| lastTag = tag; |
| count = 1; |
| } |
| |
| if (inQuote) { |
| throw new IllegalArgumentException("Unterminated quote"); |
| } |
| |
| if (count != 0) { |
| encode(lastTag, count, compiledPattern); |
| } |
| |
| // Copy the compiled pattern to a char array |
| int len = compiledPattern.length(); |
| char[] r = new char[len]; |
| compiledPattern.getChars(0, len, r, 0); |
| return r; |
| } |
| |
| /** |
| * Encodes the given tag and length and puts encoded char(s) into buffer. |
| */ |
| private static final void encode(int tag, int length, StringBuilder buffer) { |
| if (length < 255) { |
| buffer.append((char)(tag << 8 | length)); |
| } else { |
| buffer.append((char)((tag << 8) | 0xff)); |
| buffer.append((char)(length >>> 16)); |
| buffer.append((char)(length & 0xffff)); |
| } |
| } |
| |
| /* Initialize the fields we use to disambiguate ambiguous years. Separate |
| * so we can call it from readObject(). |
| */ |
| private void initializeDefaultCentury() { |
| calendar.setTime( new Date() ); |
| calendar.add( Calendar.YEAR, -80 ); |
| parseAmbiguousDatesAsAfter(calendar.getTime()); |
| } |
| |
| /* Define one-century window into which to disambiguate dates using |
| * two-digit years. |
| */ |
| private void parseAmbiguousDatesAsAfter(Date startDate) { |
| defaultCenturyStart = startDate; |
| calendar.setTime(startDate); |
| defaultCenturyStartYear = calendar.get(Calendar.YEAR); |
| } |
| |
| /** |
| * Sets the 100-year period 2-digit years will be interpreted as being in |
| * to begin on the date the user specifies. |
| * |
| * @param startDate During parsing, two digit years will be placed in the range |
| * <code>startDate</code> to <code>startDate + 100 years</code>. |
| * @see #get2DigitYearStart |
| * @since 1.2 |
| */ |
| public void set2DigitYearStart(Date startDate) { |
| parseAmbiguousDatesAsAfter(startDate); |
| } |
| |
| /** |
| * Returns the beginning date of the 100-year period 2-digit years are interpreted |
| * as being within. |
| * |
| * @return the start of the 100-year period into which two digit years are |
| * parsed |
| * @see #set2DigitYearStart |
| * @since 1.2 |
| */ |
| public Date get2DigitYearStart() { |
| return defaultCenturyStart; |
| } |
| |
| /** |
| * Formats the given <code>Date</code> into a date/time string and appends |
| * the result to the given <code>StringBuffer</code>. |
| * |
| * @param date the date-time value to be formatted into a date-time string. |
| * @param toAppendTo where the new date-time text is to be appended. |
| * @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 |
| */ |
| public StringBuffer format(Date date, StringBuffer toAppendTo, |
| FieldPosition pos) |
| { |
| pos.beginIndex = pos.endIndex = 0; |
| return format(date, toAppendTo, pos.getFieldDelegate()); |
| } |
| |
| // Called from Format after creating a FieldDelegate |
| private StringBuffer format(Date date, StringBuffer toAppendTo, |
| FieldDelegate delegate) { |
| // Convert input date to time field list |
| calendar.setTime(date); |
| |
| boolean useDateFormatSymbols = useDateFormatSymbols(); |
| |
| for (int i = 0; i < compiledPattern.length; ) { |
| int tag = compiledPattern[i] >>> 8; |
| int count = compiledPattern[i++] & 0xff; |
| if (count == 255) { |
| count = compiledPattern[i++] << 16; |
| count |= compiledPattern[i++]; |
| } |
| |
| switch (tag) { |
| case TAG_QUOTE_ASCII_CHAR: |
| toAppendTo.append((char)count); |
| break; |
| |
| case TAG_QUOTE_CHARS: |
| toAppendTo.append(compiledPattern, i, count); |
| i += count; |
| break; |
| |
| default: |
| subFormat(tag, count, delegate, toAppendTo, useDateFormatSymbols); |
| break; |
| } |
| } |
| return toAppendTo; |
| } |
| |
| /** |
| * Formats an Object producing an <code>AttributedCharacterIterator</code>. |
| * You can use the returned <code>AttributedCharacterIterator</code> |
| * to build the resulting String, as well as to determine information |
| * about the resulting String. |
| * <p> |
| * Each attribute key of the AttributedCharacterIterator will be of type |
| * <code>DateFormat.Field</code>, with the corresponding attribute value |
| * being the same as the attribute key. |
| * |
| * @exception NullPointerException if obj is null. |
| * @exception IllegalArgumentException if the Format cannot format the |
| * given object, or if the Format's pattern string is invalid. |
| * @param obj The object to format |
| * @return AttributedCharacterIterator describing the formatted value. |
| * @since 1.4 |
| */ |
| public AttributedCharacterIterator formatToCharacterIterator(Object obj) { |
| StringBuffer sb = new StringBuffer(); |
| CharacterIteratorFieldDelegate delegate = new |
| CharacterIteratorFieldDelegate(); |
| |
| if (obj instanceof Date) { |
| format((Date)obj, sb, delegate); |
| } |
| else if (obj instanceof Number) { |
| format(new Date(((Number)obj).longValue()), sb, delegate); |
| } |
| else if (obj == null) { |
| throw new NullPointerException( |
| "formatToCharacterIterator must be passed non-null object"); |
| } |
| else { |
| throw new IllegalArgumentException( |
| "Cannot format given Object as a Date"); |
| } |
| return delegate.getIterator(sb.toString()); |
| } |
| |
| // Map index into pattern character string to Calendar field number |
| private static final int[] PATTERN_INDEX_TO_CALENDAR_FIELD = |
| { |
| Calendar.ERA, Calendar.YEAR, Calendar.MONTH, Calendar.DATE, |
| Calendar.HOUR_OF_DAY, Calendar.HOUR_OF_DAY, Calendar.MINUTE, |
| Calendar.SECOND, Calendar.MILLISECOND, Calendar.DAY_OF_WEEK, |
| 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 |
| }; |
| |
| // Map index into pattern character string to DateFormat field number |
| private static final int[] PATTERN_INDEX_TO_DATE_FORMAT_FIELD = { |
| DateFormat.ERA_FIELD, DateFormat.YEAR_FIELD, DateFormat.MONTH_FIELD, |
| DateFormat.DATE_FIELD, DateFormat.HOUR_OF_DAY1_FIELD, |
| DateFormat.HOUR_OF_DAY0_FIELD, DateFormat.MINUTE_FIELD, |
| DateFormat.SECOND_FIELD, DateFormat.MILLISECOND_FIELD, |
| DateFormat.DAY_OF_WEEK_FIELD, DateFormat.DAY_OF_YEAR_FIELD, |
| DateFormat.DAY_OF_WEEK_IN_MONTH_FIELD, DateFormat.WEEK_OF_YEAR_FIELD, |
| DateFormat.WEEK_OF_MONTH_FIELD, DateFormat.AM_PM_FIELD, |
| DateFormat.HOUR1_FIELD, DateFormat.HOUR0_FIELD, |
| DateFormat.TIMEZONE_FIELD, DateFormat.TIMEZONE_FIELD, |
| }; |
| |
| // Maps from DecimalFormatSymbols index to Field constant |
| private static final Field[] PATTERN_INDEX_TO_DATE_FORMAT_FIELD_ID = { |
| Field.ERA, Field.YEAR, Field.MONTH, Field.DAY_OF_MONTH, |
| Field.HOUR_OF_DAY1, Field.HOUR_OF_DAY0, Field.MINUTE, |
| Field.SECOND, Field.MILLISECOND, Field.DAY_OF_WEEK, |
| Field.DAY_OF_YEAR, Field.DAY_OF_WEEK_IN_MONTH, |
| Field.WEEK_OF_YEAR, Field.WEEK_OF_MONTH, |
| Field.AM_PM, Field.HOUR1, Field.HOUR0, Field.TIME_ZONE, |
| Field.TIME_ZONE, |
| }; |
| |
| /** |
| * Private member function that does the real date/time formatting. |
| */ |
| private void subFormat(int patternCharIndex, int count, |
| FieldDelegate delegate, StringBuffer buffer, |
| boolean useDateFormatSymbols) |
| { |
| int maxIntCount = Integer.MAX_VALUE; |
| String current = null; |
| int beginOffset = buffer.length(); |
| |
| int field = PATTERN_INDEX_TO_CALENDAR_FIELD[patternCharIndex]; |
| int value = calendar.get(field); |
| int style = (count >= 4) ? Calendar.LONG : Calendar.SHORT; |
| if (!useDateFormatSymbols) { |
| current = calendar.getDisplayName(field, style, locale); |
| } |
| |
| // Note: zeroPaddingNumber() assumes that maxDigits is either |
| // 2 or maxIntCount. If we make any changes to this, |
| // zeroPaddingNumber() must be fixed. |
| |
| switch (patternCharIndex) { |
| case 0: // 'G' - ERA |
| if (useDateFormatSymbols) { |
| String[] eras = formatData.getEras(); |
| if (value < eras.length) |
| current = eras[value]; |
| } |
| if (current == null) |
| current = ""; |
| break; |
| |
| case 1: // 'y' - YEAR |
| if (calendar instanceof GregorianCalendar) { |
| if (count != 2) |
| zeroPaddingNumber(value, count, maxIntCount, buffer); |
| else // count == 2 |
| zeroPaddingNumber(value, 2, 2, buffer); // clip 1996 to 96 |
| } else { |
| if (current == null) { |
| zeroPaddingNumber(value, style == Calendar.LONG ? 1 : count, |
| maxIntCount, buffer); |
| } |
| } |
| break; |
| |
| case 2: // 'M' - MONTH |
| if (useDateFormatSymbols) { |
| String[] months; |
| if (count >= 4) { |
| months = formatData.getMonths(); |
| current = months[value]; |
| } else if (count == 3) { |
| months = formatData.getShortMonths(); |
| current = months[value]; |
| } |
| } else { |
| if (count < 3) { |
| current = null; |
| } |
| } |
| if (current == null) { |
| zeroPaddingNumber(value+1, count, maxIntCount, buffer); |
| } |
| break; |
| |
| case 4: // 'k' - HOUR_OF_DAY: 1-based. eg, 23:59 + 1 hour =>> 24:59 |
| if (current == null) { |
| if (value == 0) |
| zeroPaddingNumber(calendar.getMaximum(Calendar.HOUR_OF_DAY)+1, |
| count, maxIntCount, buffer); |
| else |
| zeroPaddingNumber(value, count, maxIntCount, buffer); |
| } |
| break; |
| |
| case 9: // 'E' - DAY_OF_WEEK |
| if (useDateFormatSymbols) { |
| String[] weekdays; |
| if (count >= 4) { |
| weekdays = formatData.getWeekdays(); |
| current = weekdays[value]; |
| } else { // count < 4, use abbreviated form if exists |
| weekdays = formatData.getShortWeekdays(); |
| current = weekdays[value]; |
| } |
| } |
| break; |
| |
| case 14: // 'a' - AM_PM |
| if (useDateFormatSymbols) { |
| String[] ampm = formatData.getAmPmStrings(); |
| current = ampm[value]; |
| } |
| break; |
| |
| case 15: // 'h' - HOUR:1-based. eg, 11PM + 1 hour =>> 12 AM |
| if (current == null) { |
| if (value == 0) |
| zeroPaddingNumber(calendar.getLeastMaximum(Calendar.HOUR)+1, |
| count, maxIntCount, buffer); |
| else |
| zeroPaddingNumber(value, count, maxIntCount, buffer); |
| } |
| break; |
| |
| case 17: // 'z' - ZONE_OFFSET |
| if (current == null) { |
| if (formatData.locale == null || formatData.isZoneStringsSet) { |
| int zoneIndex = |
| formatData.getZoneIndex(calendar.getTimeZone().getID()); |
| if (zoneIndex == -1) { |
| value = calendar.get(Calendar.ZONE_OFFSET) + |
| calendar.get(Calendar.DST_OFFSET); |
| buffer.append(ZoneInfoFile.toCustomID(value)); |
| } else { |
| int index = (calendar.get(Calendar.DST_OFFSET) == 0) ? 1: 3; |
| if (count < 4) { |
| // Use the short name |
| index++; |
| } |
| String[][] zoneStrings = formatData.getZoneStringsWrapper(); |
| buffer.append(zoneStrings[zoneIndex][index]); |
| } |
| } else { |
| TimeZone tz = calendar.getTimeZone(); |
| boolean daylight = (calendar.get(Calendar.DST_OFFSET) != 0); |
| int tzstyle = (count < 4 ? TimeZone.SHORT : TimeZone.LONG); |
| buffer.append(tz.getDisplayName(daylight, tzstyle, formatData.locale)); |
| } |
| } |
| break; |
| |
| case 18: // 'Z' - ZONE_OFFSET ("-/+hhmm" form) |
| value = (calendar.get(Calendar.ZONE_OFFSET) + |
| calendar.get(Calendar.DST_OFFSET)) / 60000; |
| |
| int width = 4; |
| if (value >= 0) { |
| buffer.append('+'); |
| } else { |
| width++; |
| } |
| |
| int num = (value / 60) * 100 + (value % 60); |
| CalendarUtils.sprintf0d(buffer, num, width); |
| 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 |
| if (current == null) { |
| zeroPaddingNumber(value, count, maxIntCount, buffer); |
| } |
| break; |
| } // switch (patternCharIndex) |
| |
| if (current != null) { |
| buffer.append(current); |
| } |
| |
| int fieldID = PATTERN_INDEX_TO_DATE_FORMAT_FIELD[patternCharIndex]; |
| Field f = PATTERN_INDEX_TO_DATE_FORMAT_FIELD_ID[patternCharIndex]; |
| |
| delegate.formatted(fieldID, f, f, beginOffset, buffer.length(), buffer); |
| } |
| |
| /** |
| * Formats a number with the specified minimum and maximum number of digits. |
| */ |
| private final void zeroPaddingNumber(int value, int minDigits, int maxDigits, StringBuffer buffer) |
| { |
| // Optimization for 1, 2 and 4 digit numbers. This should |
| // cover most cases of formatting date/time related items. |
| // Note: This optimization code assumes that maxDigits is |
| // either 2 or Integer.MAX_VALUE (maxIntCount in format()). |
| try { |
| if (zeroDigit == 0) { |
| zeroDigit = ((DecimalFormat)numberFormat).getDecimalFormatSymbols().getZeroDigit(); |
| } |
| if (value >= 0) { |
| if (value < 100 && minDigits >= 1 && minDigits <= 2) { |
| if (value < 10) { |
| if (minDigits == 2) { |
| buffer.append(zeroDigit); |
| } |
| buffer.append((char)(zeroDigit + value)); |
| } else { |
| buffer.append((char)(zeroDigit + value / 10)); |
| buffer.append((char)(zeroDigit + value % 10)); |
| } |
| return; |
| } else if (value >= 1000 && value < 10000) { |
| if (minDigits == 4) { |
| buffer.append((char)(zeroDigit + value / 1000)); |
| value %= 1000; |
| buffer.append((char)(zeroDigit + value / 100)); |
| value %= 100; |
| buffer.append((char)(zeroDigit + value / 10)); |
| buffer.append((char)(zeroDigit + value % 10)); |
| return; |
| } |
| if (minDigits == 2 && maxDigits == 2) { |
| zeroPaddingNumber(value % 100, 2, 2, buffer); |
| return; |
| } |
| } |
| } |
| } catch (Exception e) { |
| } |
| |
| numberFormat.setMinimumIntegerDigits(minDigits); |
| numberFormat.setMaximumIntegerDigits(maxDigits); |
| numberFormat.format((long)value, buffer, DontCareFieldPosition.INSTANCE); |
| } |
| |
| |
| /** |
| * Parses text from a string to produce a <code>Date</code>. |
| * <p> |
| * The method attempts to parse text starting at the index given by |
| * <code>pos</code>. |
| * If parsing succeeds, then the index of <code>pos</code> is updated |
| * to the index after the last character used (parsing does not necessarily |
| * use all characters up to the end of the string), and the parsed |
| * date is returned. The updated <code>pos</code> can be used to |
| * indicate the starting point for the next call to this method. |
| * If an error occurs, then the index of <code>pos</code> is not |
| * changed, the error index of <code>pos</code> is set to the index of |
| * the character where the error occurred, and null is returned. |
| * |
| * <p>This parsing operation uses the {@link DateFormat#calendar |
| * calendar} to produce a {@code Date}. All of the {@code |
| * calendar}'s date-time fields are {@linkplain Calendar#clear() |
| * cleared} before parsing, and the {@code calendar}'s default |
| * values of the date-time fields are used for any missing |
| * date-time information. For example, the year value of the |
| * parsed {@code Date} is 1970 with {@link GregorianCalendar} if |
| * no year value is given from the parsing operation. The {@code |
| * TimeZone} value may be overwritten, depending on the given |
| * pattern and the time zone value in {@code text}. Any {@code |
| * TimeZone} value that has previously been set by a call to |
| * {@link #setTimeZone(java.util.TimeZone) setTimeZone} may need |
| * to be restored for further operations. |
| * |
| * @param text A <code>String</code>, part of which should be parsed. |
| * @param pos A <code>ParsePosition</code> object with index and error |
| * index information as described above. |
| * @return A <code>Date</code> parsed from the string. In case of |
| * error, returns null. |
| * @exception NullPointerException if <code>text</code> or <code>pos</code> is null. |
| */ |
| public Date parse(String text, ParsePosition pos) |
| { |
| checkNegativeNumberExpression(); |
| |
| int start = pos.index; |
| int oldStart = start; |
| int textLength = text.length(); |
| |
| calendar.clear(); // Clears all the time fields |
| |
| boolean[] ambiguousYear = {false}; |
| |
| |
| for (int i = 0; i < compiledPattern.length; ) { |
| int tag = compiledPattern[i] >>> 8; |
| int count = compiledPattern[i++] & 0xff; |
| if (count == 255) { |
| count = compiledPattern[i++] << 16; |
| count |= compiledPattern[i++]; |
| } |
| |
| switch (tag) { |
| case TAG_QUOTE_ASCII_CHAR: |
| if (start >= textLength || text.charAt(start) != (char)count) { |
| pos.index = oldStart; |
| pos.errorIndex = start; |
| return null; |
| } |
| start++; |
| break; |
| |
| case TAG_QUOTE_CHARS: |
| while (count-- > 0) { |
| if (start >= textLength || text.charAt(start) != compiledPattern[i++]) { |
| pos.index = oldStart; |
| pos.errorIndex = start; |
| return null; |
| } |
| start++; |
| } |
| break; |
| |
| default: |
| // Peek the next pattern to determine if we need to |
| // obey the number of pattern letters for |
| // parsing. It's required when parsing contiguous |
| // digit text (e.g., "20010704") with a pattern which |
| // has no delimiters between fields, like "yyyyMMdd". |
| boolean obeyCount = false; |
| |
| // In Arabic, a minus sign for a negative number is put after |
| // the number. Even in another locale, a minus sign can be |
| // put after a number using DateFormat.setNumberFormat(). |
| // If both the minus sign and the field-delimiter are '-', |
| // subParse() needs to determine whether a '-' after a number |
| // in the given text is a delimiter or is a minus sign for the |
| // preceding number. We give subParse() a clue based on the |
| // information in compiledPattern. |
| boolean useFollowingMinusSignAsDelimiter = false; |
| |
| if (i < compiledPattern.length) { |
| int nextTag = compiledPattern[i] >>> 8; |
| if (!(nextTag == TAG_QUOTE_ASCII_CHAR || |
| nextTag == TAG_QUOTE_CHARS)) { |
| obeyCount = true; |
| } |
| |
| if (hasFollowingMinusSign && |
| (nextTag == TAG_QUOTE_ASCII_CHAR || |
| nextTag == TAG_QUOTE_CHARS)) { |
| int c; |
| if (nextTag == TAG_QUOTE_ASCII_CHAR) { |
| c = compiledPattern[i] & 0xff; |
| } else { |
| c = compiledPattern[i+1]; |
| } |
| |
| if (c == minusSign) { |
| useFollowingMinusSignAsDelimiter = true; |
| } |
| } |
| } |
| start = subParse(text, start, tag, count, obeyCount, |
| ambiguousYear, pos, |
| useFollowingMinusSignAsDelimiter); |
| if (start < 0) { |
| pos.index = oldStart; |
| return null; |
| } |
| } |
| } |
| |
| // At this point the fields of Calendar have been set. Calendar |
| // will fill in default values for missing fields when the time |
| // is computed. |
| |
| 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(); |
| } |
| } |
| else parsedDate = calendar.getTime(); |
| } |
| // An IllegalArgumentException will be thrown by Calendar.getTime() |
| // if any fields are out of range, e.g., MONTH == 17. |
| catch (IllegalArgumentException e) { |
| pos.errorIndex = start; |
| pos.index = oldStart; |
| return null; |
| } |
| |
| return parsedDate; |
| } |
| |
| /** |
| * Private code-size reduction function used by subParse. |
| * @param text the time text being parsed. |
| * @param start where to start parsing. |
| * @param field the date field being parsed. |
| * @param data the string array to parsed. |
| * @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) |
| { |
| int i = 0; |
| int count = data.length; |
| |
| if (field == Calendar.DAY_OF_WEEK) i = 1; |
| |
| // There may be multiple strings in the data[] array which begin with |
| // the same prefix (e.g., Cerven and Cervenec (June and July) in Czech). |
| // We keep track of the longest match, and return that. Note that this |
| // unfortunately requires us to test all array elements. |
| int bestMatchLength = 0, bestMatch = -1; |
| for (; i<count; ++i) |
| { |
| int length = data[i].length(); |
| // Always compare if we have no match yet; otherwise only compare |
| // against potentially better matches (longer strings). |
| if (length > bestMatchLength && |
| text.regionMatches(true, start, data[i], 0, length)) |
| { |
| bestMatch = i; |
| bestMatchLength = length; |
| } |
| } |
| if (bestMatch >= 0) |
| { |
| calendar.set(field, bestMatch); |
| return start + bestMatchLength; |
| } |
| return -start; |
| } |
| |
| /** |
| * Performs the same thing as matchString(String, int, int, |
| * String[]). This method takes a Map<String, Integer> instead of |
| * String[]. |
| */ |
| private int matchString(String text, int start, int field, Map<String,Integer> data) { |
| if (data != null) { |
| String bestMatch = null; |
| |
| for (String name : data.keySet()) { |
| int length = name.length(); |
| if (bestMatch == null || length > bestMatch.length()) { |
| if (text.regionMatches(true, start, name, 0, length)) { |
| bestMatch = name; |
| } |
| } |
| } |
| |
| if (bestMatch != null) { |
| calendar.set(field, data.get(bestMatch)); |
| return start + bestMatch.length(); |
| } |
| } |
| return -start; |
| } |
| |
| private int matchZoneString(String text, int start, String[] zoneNames) { |
| for (int i = 1; i <= 4; ++i) { |
| // Checking long and short zones [1 & 2], |
| // and long and short daylight [3 & 4]. |
| String zoneName = zoneNames[i]; |
| if (text.regionMatches(true, start, |
| zoneName, 0, zoneName.length())) { |
| return i; |
| } |
| } |
| return -1; |
| } |
| |
| /** |
| * find time zone 'text' matched zoneStrings and set to internal |
| * calendar. |
| */ |
| private int subParseZoneString(String text, int start) { |
| boolean useSameName = false; // true if standard and daylight time use the same abbreviation. |
| TimeZone currentTimeZone = getTimeZone(); |
| |
| // At this point, check for named time zones by looking through |
| // the locale data from the TimeZoneNames strings. |
| // Want to be able to parse both short and long forms. |
| int zoneIndex = formatData.getZoneIndex(currentTimeZone.getID()); |
| TimeZone tz = null; |
| String[][] zoneStrings = formatData.getZoneStringsWrapper(); |
| String[] zoneNames = null; |
| int nameIndex = 0; |
| if (zoneIndex != -1) { |
| zoneNames = zoneStrings[zoneIndex]; |
| if ((nameIndex = matchZoneString(text, start, zoneNames)) > 0) { |
| if (nameIndex <= 2) { |
| // Check if the standard name (abbr) and the daylight name are the same. |
| useSameName = zoneNames[nameIndex].equalsIgnoreCase(zoneNames[nameIndex + 2]); |
| } |
| tz = TimeZone.getTimeZone(zoneNames[0]); |
| } |
| } |
| if (tz == null) { |
| zoneIndex = formatData.getZoneIndex(TimeZone.getDefault().getID()); |
| if (zoneIndex != -1) { |
| zoneNames = zoneStrings[zoneIndex]; |
| if ((nameIndex = matchZoneString(text, start, zoneNames)) > 0) { |
| if (nameIndex <= 2) { |
| useSameName = zoneNames[nameIndex].equalsIgnoreCase(zoneNames[nameIndex + 2]); |
| } |
| tz = TimeZone.getTimeZone(zoneNames[0]); |
| } |
| } |
| } |
| if (tz == null) { |
| int len = zoneStrings.length; |
| for (int i = 0; i < len; i++) { |
| zoneNames = zoneStrings[i]; |
| if ((nameIndex = matchZoneString(text, start, zoneNames)) > 0) { |
| if (nameIndex <= 2) { |
| useSameName = zoneNames[nameIndex].equalsIgnoreCase(zoneNames[nameIndex + 2]); |
| } |
| tz = TimeZone.getTimeZone(zoneNames[0]); |
| break; |
| } |
| } |
| } |
| if (tz != null) { // Matched any ? |
| if (!tz.equals(currentTimeZone)) { |
| setTimeZone(tz); |
| } |
| // If the time zone matched uses the same name |
| // (abbreviation) for both standard and daylight time, |
| // let the time zone in the Calendar decide which one. |
| // |
| // Also if tz.getDSTSaving() returns 0 for DST, use tz to |
| // 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); |
| } |
| return (start + zoneNames[nameIndex].length()); |
| } |
| return 0; |
| } |
| |
| /** |
| * Private member function that converts the parsed date strings into |
| * timeFields. Returns -start (for ParsePosition) if failed. |
| * @param text the time text to be parsed. |
| * @param start where to start parsing. |
| * @param ch the pattern character for the date field text to be parsed. |
| * @param count the count of a pattern character. |
| * @param obeyCount if true, then the next field directly abuts this one, |
| * and we should use the count to know when to stop parsing. |
| * @param ambiguousYear return parameter; upon return, if ambiguousYear[0] |
| * is true, then a two-digit year was parsed and may need to be readjusted. |
| * @param origPos origPos.errorIndex is used to return an error index |
| * at which a parse error occurred, if matching failure occurs. |
| * @return the new start position if matching succeeded; -1 indicating |
| * matching failure, otherwise. In case matching failure occurred, |
| * an error index is set to origPos.errorIndex. |
| */ |
| private int subParse(String text, int start, int patternCharIndex, int count, |
| boolean obeyCount, boolean[] ambiguousYear, |
| ParsePosition origPos, |
| boolean useFollowingMinusSignAsDelimiter) { |
| Number number = null; |
| int value = 0; |
| ParsePosition pos = new ParsePosition(0); |
| pos.index = start; |
| int field = PATTERN_INDEX_TO_CALENDAR_FIELD[patternCharIndex]; |
| |
| // If there are any spaces here, skip over them. If we hit the end |
| // of the string, then fail. |
| for (;;) { |
| if (pos.index >= text.length()) { |
| origPos.errorIndex = start; |
| return -1; |
| } |
| char c = text.charAt(pos.index); |
| if (c != ' ' && c != '\t') break; |
| ++pos.index; |
| } |
| |
| parsing: |
| { |
| // We handle a few special cases here where we need to parse |
| // 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 */) { |
| // It would be good to unify this with the obeyCount logic below, |
| // but that's going to be difficult. |
| if (obeyCount) { |
| if ((start+count) > text.length()) { |
| break parsing; |
| } |
| number = numberFormat.parse(text.substring(0, start+count), pos); |
| } else { |
| number = numberFormat.parse(text, pos); |
| } |
| if (number == null) { |
| if (patternCharIndex != 1 || calendar instanceof GregorianCalendar) { |
| break parsing; |
| } |
| } else { |
| value = number.intValue(); |
| |
| if (useFollowingMinusSignAsDelimiter && (value < 0) && |
| (((pos.index < text.length()) && |
| (text.charAt(pos.index) != minusSign)) || |
| ((pos.index == text.length()) && |
| (text.charAt(pos.index-1) == minusSign)))) { |
| value = -value; |
| pos.index--; |
| } |
| } |
| } |
| |
| boolean useDateFormatSymbols = useDateFormatSymbols(); |
| |
| int index; |
| switch (patternCharIndex) { |
| case 0: // 'G' - ERA |
| if (useDateFormatSymbols) { |
| if ((index = matchString(text, start, Calendar.ERA, formatData.getEras())) > 0) { |
| return index; |
| } |
| } else { |
| Map<String, Integer> map = calendar.getDisplayNames(field, |
| Calendar.ALL_STYLES, |
| locale); |
| if ((index = matchString(text, start, field, map)) > 0) { |
| return index; |
| } |
| } |
| break parsing; |
| |
| case 1: // 'y' - YEAR |
| 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) { |
| return index; |
| } |
| } |
| calendar.set(field, value); |
| return pos.index; |
| } |
| |
| // If there are 3 or more YEAR pattern characters, this indicates |
| // that the year value is to be treated literally, without any |
| // two-digit year adjustments (e.g., from "01" to 2001). Otherwise |
| // we made adjustments to place the 2-digit year in the proper |
| // century, for parsed strings from "00" to "99". Any other string |
| // 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))) |
| { |
| // 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 |
| // correspond to 2000, 2001, and 2002. Years 04, 05, etc. correspond |
| // to 1904, 1905, etc. If the year is 03, then it is 2003 if the |
| // other fields specify a date before 6/18, or 1903 if they specify a |
| // date afterwards. As a result, 03 is an ambiguous year. All other |
| // two-digit years are unambiguous. |
| int ambiguousTwoDigitYear = defaultCenturyStartYear % 100; |
| ambiguousYear[0] = value == ambiguousTwoDigitYear; |
| value += (defaultCenturyStartYear/100)*100 + |
| (value < ambiguousTwoDigitYear ? 100 : 0); |
| } |
| calendar.set(Calendar.YEAR, value); |
| return pos.index; |
| |
| case 2: // 'M' - MONTH |
| 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); |
| return pos.index; |
| } |
| |
| if (useDateFormatSymbols) { |
| // count >= 3 // i.e., MMM or MMMM |
| // Want to be able to parse both short and long forms. |
| // Try count == 4 first: |
| int newStart = 0; |
| if ((newStart = matchString(text, start, Calendar.MONTH, |
| formatData.getMonths())) > 0) { |
| return newStart; |
| } |
| // count == 4 failed, now try count == 3 |
| if ((index = matchString(text, start, Calendar.MONTH, |
| formatData.getShortMonths())) > 0) { |
| return index; |
| } |
| } else { |
| Map<String, Integer> map = calendar.getDisplayNames(field, |
| Calendar.ALL_STYLES, |
| locale); |
| if ((index = matchString(text, start, field, map)) > 0) { |
| return index; |
| } |
| } |
| break parsing; |
| |
| case 4: // 'k' - HOUR_OF_DAY: 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); |
| return pos.index; |
| |
| case 9: |
| { // 'E' - DAY_OF_WEEK |
| 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) { |
| return newStart; |
| } |
| // DDDD failed, now try DDD |
| if ((index = matchString(text, start, Calendar.DAY_OF_WEEK, |
| formatData.getShortWeekdays())) > 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) { |
| return index; |
| } |
| } |
| } |
| } |
| break parsing; |
| |
| case 14: // 'a' - AM_PM |
| if (useDateFormatSymbols) { |
| if ((index = matchString(text, start, Calendar.AM_PM, formatData.getAmPmStrings())) > 0) { |
| return index; |
| } |
| } else { |
| Map<String,Integer> map = calendar.getDisplayNames(field, Calendar.ALL_STYLES, locale); |
| if ((index = matchString(text, start, field, map)) > 0) { |
| return index; |
| } |
| } |
| break parsing; |
| |
| case 15: // 'h' - HOUR: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); |
| return pos.index; |
| |
| case 17: // 'z' - ZONE_OFFSET |
| case 18: // 'Z' - ZONE_OFFSET |
| // 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 |
| // characters of GMT+/-hh:mm etc. |
| { |
| int sign = 0; |
| int offset; |
| |
| // For time zones that have no known names, look for strings |
| // of the form: |
| // GMT[+-]hours:minutes or |
| // GMT. |
| if ((text.length() - start) >= GMT.length() && |
| text.regionMatches(true, start, GMT, 0, GMT.length())) { |
| int num; |
| calendar.set(Calendar.DST_OFFSET, 0); |
| pos.index = start + GMT.length(); |
| |
| try { // try-catch for "GMT" only time zone string |
| char c = text.charAt(pos.index); |
| if (c == '+') { |
| sign = 1; |
| } else if (c == '-') { |
| sign = -1; |
| } |
| } |
| catch(StringIndexOutOfBoundsException e) {} |
| |
| if (sign == 0) { /* "GMT" without offset */ |
| calendar.set(Calendar.ZONE_OFFSET, 0); |
| return pos.index; |
| } |
| |
| // Look for hours. |
| try { |
| char c = text.charAt(++pos.index); |
| if (c < '0' || c > '9') { /* must be from '0' to '9'. */ |
| break parsing; |
| } |
| num = c - '0'; |
| |
| if (text.charAt(++pos.index) != ':') { |
| c = text.charAt(pos.index); |
| if (c < '0' || c > '9') { /* must be from '0' to '9'. */ |
| break parsing; |
| } |
| num *= 10; |
| num += c - '0'; |
| pos.index++; |
| } |
| if (num > 23) { |
| --pos.index; |
| break parsing; |
| } |
| if (text.charAt(pos.index) != ':') { |
| break parsing; |
| } |
| |
| // Look for minutes. |
| offset = num * 60; |
| c = text.charAt(++pos.index); |
| if (c < '0' || c > '9') { /* must be from '0' to '9'. */ |
| break parsing; |
| } |
| num = c - '0'; |
| c = text.charAt(++pos.index); |
| if (c < '0' || c > '9') { /* must be from '0' to '9'. */ |
| break parsing; |
| } |
| num *= 10; |
| num += c - '0'; |
| |
| if (num > 59) { |
| break parsing; |
| } |
| } catch (StringIndexOutOfBoundsException e) { |
| break parsing; |
| } |
| offset += num; |
| // Fall through for final processing below of 'offset' and 'sign'. |
| } else { |
| // If the first character is a sign, look for numeric timezones of |
| // the form [+-]hhmm as specified by RFC 822. Otherwise, check |
| // for named time zones by looking through the locale data from |
| // the TimeZoneNames strings. |
| try { |
| char c = text.charAt(pos.index); |
| if (c == '+') { |
| sign = 1; |
| } else if (c == '-') { |
| sign = -1; |
| } else { |
| // Try parsing the text as a time zone name (abbr). |
| int i = subParseZoneString(text, pos.index); |
| if (i != 0) { |
| return i; |
| } |
| break parsing; |
| } |
| |
| // Parse the text as an RFC 822 time zone string. This code is |
| // actually a little more permissive than RFC 822. It will |
| // try to do its best with numbers that aren't strictly 4 |
| // digits long. |
| |
| // Look for hh. |
| int hours = 0; |
| c = text.charAt(++pos.index); |
| if (c < '0' || c > '9') { /* must be from '0' to '9'. */ |
| break parsing; |
| } |
| hours = c - '0'; |
| c = text.charAt(++pos.index); |
| if (c < '0' || c > '9') { /* must be from '0' to '9'. */ |
| break parsing; |
| } |
| hours *= 10; |
| hours += c - '0'; |
| |
| if (hours > 23) { |
| break parsing; |
| } |
| |
| // Look for mm. |
| int minutes = 0; |
| c = text.charAt(++pos.index); |
| if (c < '0' || c > '9') { /* must be from '0' to '9'. */ |
| break parsing; |
| } |
| minutes = c - '0'; |
| c = text.charAt(++pos.index); |
| if (c < '0' || c > '9') { /* must be from '0' to '9'. */ |
| break parsing; |
| } |
| minutes *= 10; |
| minutes += c - '0'; |
| |
| if (minutes > 59) { |
| break parsing; |
| } |
| |
| offset = hours * 60 + minutes; |
| } catch (StringIndexOutOfBoundsException e) { |
| break parsing; |
| } |
| } |
| |
| // Do the final processing for both of the above cases. We only |
| // 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); |
| 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 |
| |
| // Handle "generic" fields |
| if (obeyCount) { |
| if ((start+count) > text.length()) { |
| break parsing; |
| } |
| number = numberFormat.parse(text.substring(0, start+count), pos); |
| } else { |
| number = numberFormat.parse(text, pos); |
| } |
| if (number != null) { |
| value = number.intValue(); |
| |
| if (useFollowingMinusSignAsDelimiter && (value < 0) && |
| (((pos.index < text.length()) && |
| (text.charAt(pos.index) != minusSign)) || |
| ((pos.index == text.length()) && |
| (text.charAt(pos.index-1) == minusSign)))) { |
| value = -value; |
| pos.index--; |
| } |
| |
| calendar.set(field, value); |
| return pos.index; |
| } |
| break parsing; |
| } |
| } |
| |
| // Parsing failed. |
| origPos.errorIndex = pos.index; |
| return -1; |
| } |
| |
| private final String getCalendarName() { |
| return calendar.getClass().getName(); |
| } |
| |
| private boolean useDateFormatSymbols() { |
| if (useDateFormatSymbols) { |
| return true; |
| } |
| return isGregorianCalendar() || locale == null; |
| } |
| |
| private boolean isGregorianCalendar() { |
| return "java.util.GregorianCalendar".equals(getCalendarName()); |
| } |
| |
| /** |
| * Translates a pattern, mapping each character in the from string to the |
| * corresponding character in the to string. |
| * |
| * @exception IllegalArgumentException if the given pattern is invalid |
| */ |
| private String translatePattern(String pattern, String from, String to) { |
| StringBuilder result = new StringBuilder(); |
| boolean inQuote = false; |
| for (int i = 0; i < pattern.length(); ++i) { |
| char c = pattern.charAt(i); |
| if (inQuote) { |
| if (c == '\'') |
| inQuote = false; |
| } |
| else { |
| if (c == '\'') |
| inQuote = true; |
| else if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')) { |
| int ci = from.indexOf(c); |
| if (ci == -1) |
| throw new IllegalArgumentException("Illegal pattern " + |
| " character '" + |
| c + "'"); |
| c = to.charAt(ci); |
| } |
| } |
| result.append(c); |
| } |
| if (inQuote) |
| throw new IllegalArgumentException("Unfinished quote in pattern"); |
| return result.toString(); |
| } |
| |
| /** |
| * Returns a pattern string describing this date format. |
| * |
| * @return a pattern string describing this date format. |
| */ |
| public String toPattern() { |
| return pattern; |
| } |
| |
| /** |
| * Returns a localized pattern string describing this date format. |
| * |
| * @return a localized pattern string describing this date format. |
| */ |
| public String toLocalizedPattern() { |
| return translatePattern(pattern, |
| DateFormatSymbols.patternChars, |
| formatData.getLocalPatternChars()); |
| } |
| |
| /** |
| * Applies the given pattern string to this date format. |
| * |
| * @param pattern the new date and time pattern for this date format |
| * @exception NullPointerException if the given pattern is null |
| * @exception IllegalArgumentException if the given pattern is invalid |
| */ |
| public void applyPattern (String pattern) |
| { |
| compiledPattern = compile(pattern); |
| this.pattern = pattern; |
| } |
| |
| /** |
| * Applies the given localized pattern string to this date format. |
| * |
| * @param pattern a String to be mapped to the new date and time format |
| * pattern for this format |
| * @exception NullPointerException if the given pattern is null |
| * @exception IllegalArgumentException if the given pattern is invalid |
| */ |
| public void applyLocalizedPattern(String pattern) { |
| String p = translatePattern(pattern, |
| formatData.getLocalPatternChars(), |
| DateFormatSymbols.patternChars); |
| compiledPattern = compile(p); |
| this.pattern = p; |
| } |
| |
| /** |
| * Gets a copy of the date and time format symbols of this date format. |
| * |
| * @return the date and time format symbols of this date format |
| * @see #setDateFormatSymbols |
| */ |
| public DateFormatSymbols getDateFormatSymbols() |
| { |
| return (DateFormatSymbols)formatData.clone(); |
| } |
| |
| /** |
| * Sets the date and time format symbols of this date format. |
| * |
| * @param newFormatSymbols the new date and time format symbols |
| * @exception NullPointerException if the given newFormatSymbols is null |
| * @see #getDateFormatSymbols |
| */ |
| public void setDateFormatSymbols(DateFormatSymbols newFormatSymbols) |
| { |
| this.formatData = (DateFormatSymbols)newFormatSymbols.clone(); |
| useDateFormatSymbols = true; |
| } |
| |
| /** |
| * Creates a copy of this <code>SimpleDateFormat</code>. This also |
| * clones the format's date format symbols. |
| * |
| * @return a clone of this <code>SimpleDateFormat</code> |
| */ |
| public Object clone() { |
| SimpleDateFormat other = (SimpleDateFormat) super.clone(); |
| other.formatData = (DateFormatSymbols) formatData.clone(); |
| return other; |
| } |
| |
| /** |
| * Returns the hash code value for this <code>SimpleDateFormat</code> object. |
| * |
| * @return the hash code value for this <code>SimpleDateFormat</code> object. |
| */ |
| public int hashCode() |
| { |
| return pattern.hashCode(); |
| // just enough fields for a reasonable distribution |
| } |
| |
| /** |
| * Compares the given object with this <code>SimpleDateFormat</code> for |
| * equality. |
| * |
| * @return true if the given object is equal to this |
| * <code>SimpleDateFormat</code> |
| */ |
| public boolean equals(Object obj) |
| { |
| if (!super.equals(obj)) return false; // super does class check |
| SimpleDateFormat that = (SimpleDateFormat) obj; |
| return (pattern.equals(that.pattern) |
| && formatData.equals(that.formatData)); |
| } |
| |
| /** |
| * After reading an object from the input stream, the format |
| * pattern in the object is verified. |
| * <p> |
| * @exception InvalidObjectException if the pattern is invalid |
| */ |
| private void readObject(ObjectInputStream stream) |
| throws IOException, ClassNotFoundException { |
| stream.defaultReadObject(); |
| |
| try { |
| compiledPattern = compile(pattern); |
| } catch (Exception e) { |
| throw new InvalidObjectException("invalid pattern"); |
| } |
| |
| if (serialVersionOnStream < 1) { |
| // didn't have defaultCenturyStart field |
| initializeDefaultCentury(); |
| } |
| else { |
| // fill in dependent transient field |
| parseAmbiguousDatesAsAfter(defaultCenturyStart); |
| } |
| serialVersionOnStream = currentSerialVersion; |
| |
| // If the deserialized object has a SimpleTimeZone, try |
| // to replace it with a ZoneInfo equivalent in order to |
| // be compatible with the SimpleTimeZone-based |
| // implementation as much as possible. |
| TimeZone tz = getTimeZone(); |
| if (tz instanceof SimpleTimeZone) { |
| String id = tz.getID(); |
| TimeZone zi = TimeZone.getTimeZone(id); |
| if (zi != null && zi.hasSameRules(tz) && zi.getID().equals(id)) { |
| setTimeZone(zi); |
| } |
| } |
| } |
| |
| /** |
| * Analyze the negative subpattern of DecimalFormat and set/update values |
| * as necessary. |
| */ |
| private void checkNegativeNumberExpression() { |
| if ((numberFormat instanceof DecimalFormat) && |
| !numberFormat.equals(originalNumberFormat)) { |
| String numberPattern = ((DecimalFormat)numberFormat).toPattern(); |
| if (!numberPattern.equals(originalNumberPattern)) { |
| hasFollowingMinusSign = false; |
| |
| int separatorIndex = numberPattern.indexOf(';'); |
| // If the negative subpattern is not absent, we have to analayze |
| // it in order to check if it has a following minus sign. |
| if (separatorIndex > -1) { |
| int minusIndex = numberPattern.indexOf('-', separatorIndex); |
| if ((minusIndex > numberPattern.lastIndexOf('0')) && |
| (minusIndex > numberPattern.lastIndexOf('#'))) { |
| hasFollowingMinusSign = true; |
| minusSign = ((DecimalFormat)numberFormat).getDecimalFormatSymbols().getMinusSign(); |
| } |
| } |
| originalNumberPattern = numberPattern; |
| } |
| originalNumberFormat = numberFormat; |
| } |
| } |
| |
| } |
