740 lines
33 KiB
C++
740 lines
33 KiB
C++
/*
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*******************************************************************************
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* *
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* COPYRIGHT: *
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* (C) Copyright Taligent, Inc., 1997 *
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* (C) Copyright International Business Machines Corporation, 1997-1999 *
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* Copyright (C) 1999 Alan Liu and others. All rights reserved. *
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* Licensed Material - Program-Property of IBM - All Rights Reserved. *
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* US Government Users Restricted Rights - Use, duplication, or disclosure *
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* restricted by GSA ADP Schedule Contract with IBM Corp. *
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* *
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*******************************************************************************
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*
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* File SMPDTFMT.H
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*
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* Modification History:
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*
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* Date Name Description
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* 02/19/97 aliu Converted from java.
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* 07/09/97 helena Make ParsePosition into a class.
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* 07/21/98 stephen Added GMT_PLUS, GMT_MINUS
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* Changed setTwoDigitStartDate to set2DigitYearStart
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* Changed getTwoDigitStartDate to get2DigitYearStart
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* Removed subParseLong
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* Removed getZoneIndex (added in DateFormatSymbols)
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* 06/14/99 stephen Removed fgTimeZoneDataSuffix
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* 10/14/99 aliu Updated class doc to describe 2-digit year parsing
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* {j28 4182066}.
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*******************************************************************************
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*/
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#ifndef SMPDTFMT_H
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#define SMPDTFMT_H
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#include "utypes.h"
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#include "datefmt.h"
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class DateFormatSymbols;
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/**
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* SimpleDateFormat is a concrete class for formatting and parsing dates in a
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* language-independent manner. It allows for formatting (millis -> text),
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* parsing (text -> millis), and normalization. Formats/Parses a date or time,
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* which is the standard milliseconds since 24:00 GMT, Jan 1, 1970.
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* <P>
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* Clients are encouraged to create a date-time formatter using DateFormat::getInstance(),
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* getDateInstance(), getDateInstance(), or getDateTimeInstance() rather than
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* explicitly constructing an instance of SimpleDateFormat. This way, the client
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* is guaranteed to get an appropriate formatting pattern for whatever locale the
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* program is running in. However, if the client needs something more unusual than
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* the default patterns in the locales, he can construct a SimpleDateFormat directly
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* and give it an appropriate pattern (or use one of the factory methods on DateFormat
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* and modify the pattern after the fact with toPattern() and applyPattern().
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* <P>
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* Date/Time format syntax:
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* <P>
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* The date/time format is specified by means of a string time pattern. In this
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* pattern, all ASCII letters are reserved as pattern letters, which are defined
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* as the following:
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* <pre>
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* . Symbol Meaning Presentation Example
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* . ------ ------- ------------ -------
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* . G era designator (Text) AD
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* . y year (Number) 1996
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* . M month in year (Text & Number) July & 07
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* . d day in month (Number) 10
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* . h hour in am/pm (1~12) (Number) 12
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* . H hour in day (0~23) (Number) 0
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* . m minute in hour (Number) 30
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* . s second in minute (Number) 55
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* . S millisecond (Number) 978
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* . E day in week (Text) Tuesday
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* . D day in year (Number) 189
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* . F day of week in month (Number) 2 (2nd Wed in July)
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* . w week in year (Number) 27
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* . W week in month (Number) 2
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* . a am/pm marker (Text) PM
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* . k hour in day (1~24) (Number) 24
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* . K hour in am/pm (0~11) (Number) 0
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* . z time zone (Text) Pacific Standard Time
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* . ' escape for text
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* . '' single quote '
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* </pre>
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* The count of pattern letters determine the format.
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* <P>
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* (Text): 4 or more, use full form, <4, use short or abbreviated form if it
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* exists. (e.g., "EEEE" produces "Monday", "EEE" produces "Mon")
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* <P>
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* (Number): the minimum number of digits. Shorter numbers are zero-padded to
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* this amount (e.g. if "m" produces "6", "mm" produces "06"). Year is handled
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* specially; that is, if the count of 'y' is 2, the Year will be truncated to 2 digits.
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* (e.g., if "yyyy" produces "1997", "yy" produces "97".)
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* <P>
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* (Text & Number): 3 or over, use text, otherwise use number. (e.g., "M" produces "1",
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* "MM" produces "01", "MMM" produces "Jan", and "MMMM" produces "January".)
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* <P>
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* Any characters in the pattern that are not in the ranges of ['a'..'z'] and
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* ['A'..'Z'] will be treated as quoted text. For instance, characters
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* like ':', '.', ' ', '#' and '@' will appear in the resulting time text
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* even they are not embraced within single quotes.
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* <P>
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* A pattern containing any invalid pattern letter will result in a failing
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* UErrorCode result during formatting or parsing.
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* <P>
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* Examples using the US locale:
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* <pre>
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* . Format Pattern Result
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* . -------------- -------
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* . "yyyy.MM.dd G 'at' HH:mm:ss z" ->> 1996.07.10 AD at 15:08:56 PDT
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* . "EEE, MMM d, ''yy" ->> Wed, July 10, '96
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* . "h:mm a" ->> 12:08 PM
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* . "hh 'o''clock' a, zzzz" ->> 12 o'clock PM, Pacific Daylight Time
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* . "K:mm a, z" ->> 0:00 PM, PST
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* . "yyyyy.MMMMM.dd GGG hh:mm aaa" ->> 1996.July.10 AD 12:08 PM
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* </pre>
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* Code Sample:
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* <pre>
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* . UErrorCode success = U_ZERO_ERROR;
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* . SimpleTimeZone* pdt = new SimpleTimeZone(-8 * 60 * 60 * 1000, "PST");
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* . pdt->setStartRule( Calendar::APRIL, 1, Calendar::SUNDAY, 2*60*60*1000);
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* . pdt->setEndRule( Calendar::OCTOBER, -1, Calendar::SUNDAY, 2*60*60*1000);
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* .
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* . // Format the current time.
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* . SimpleDateFormat* formatter
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* . = new SimpleDateFormat ("yyyy.MM.dd G 'at' hh:mm:ss a zzz", success );
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* . GregorianCalendar cal(success);
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* . UDate currentTime_1 = cal.getTime(success);
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* . FieldPosition fp(0);
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* . UnicodeString dateString;
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* . formatter->format( currentTime_1, dateString, fp );
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* . cout << "result: " << dateString << endl;
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* .
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* . // Parse the previous string back into a Date.
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* . ParsePosition pp(0);
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* . UDate currentTime_2 = formatter->parse(dateString, pp );
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* </pre>
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* In the above example, the time value "currentTime_2" obtained from parsing
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* will be equal to currentTime_1. However, they may not be equal if the am/pm
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* marker 'a' is left out from the format pattern while the "hour in am/pm"
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* pattern symbol is used. This information loss can happen when formatting the
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* time in PM.
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*
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* <p>
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* When parsing a date string using the abbreviated year pattern ("y" or "yy"),
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* SimpleDateFormat must interpret the abbreviated year
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* relative to some century. It does this by adjusting dates to be
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* within 80 years before and 20 years after the time the SimpleDateFormat
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* instance is created. For example, using a pattern of "MM/dd/yy" and a
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* SimpleDateFormat instance created on Jan 1, 1997, the string
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* "01/11/12" would be interpreted as Jan 11, 2012 while the string "05/04/64"
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* would be interpreted as May 4, 1964.
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* During parsing, only strings consisting of exactly two digits, as defined by
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* <code>Unicode::isDigit()</code>, will be parsed into the default century.
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* Any other numeric string, such as a one digit string, a three or more digit
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* string, or a two digit string that isn't all digits (for example, "-1"), is
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* interpreted literally. So "01/02/3" or "01/02/003" are parsed, using the
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* same pattern, as Jan 2, 3 AD. Likewise, "01/02/-3" is parsed as Jan 2, 4 BC.
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*
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* <p>
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* If the year pattern has more than two 'y' characters, the year is
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* interpreted literally, regardless of the number of digits. So using the
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* pattern "MM/dd/yyyy", "01/11/12" parses to Jan 11, 12 A.D.
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*
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* <P>
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* For time zones that have no names, SimpleDateFormat uses strings GMT+hours:minutes or
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* GMT-hours:minutes.
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* <P>
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* The calendar defines what is the first day of the week, the first week of the
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* year, whether hours are zero based or not (0 vs 12 or 24), and the timezone.
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* There is one common number format to handle all the numbers; the digit count
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* is handled programmatically according to the pattern.
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*/
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class U_I18N_API SimpleDateFormat: public DateFormat {
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public:
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/**
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* Construct a SimpleDateFormat using the default pattern for the default
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* locale.
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* <P>
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* [Note:] Not all locales support SimpleDateFormat; for full generality,
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* use the factory methods in the DateFormat class.
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*/
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SimpleDateFormat(UErrorCode& status);
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/**
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* Construct a SimpleDateFormat using the given pattern and the default locale.
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* The locale is used to obtain the symbols used in formatting (e.g., the
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* names of the months), but not to provide the pattern.
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* <P>
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* [Note:] Not all locales support SimpleDateFormat; for full generality,
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* use the factory methods in the DateFormat class.
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*/
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SimpleDateFormat(const UnicodeString& pattern,
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UErrorCode& status);
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/**
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* Construct a SimpleDateFormat using the given pattern and locale.
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* The locale is used to obtain the symbols used in formatting (e.g., the
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* names of the months), but not to provide the pattern.
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* <P>
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* [Note:] Not all locales support SimpleDateFormat; for full generality,
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* use the factory methods in the DateFormat class.
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*/
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SimpleDateFormat(const UnicodeString& pattern,
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const Locale& locale,
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UErrorCode& status);
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/**
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* Construct a SimpleDateFormat using the given pattern and locale-specific
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* symbol data. The formatter takes ownership of the DateFormatSymbols object;
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* the caller is no longer responsible for deleting it.
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*/
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SimpleDateFormat(const UnicodeString& pattern,
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DateFormatSymbols* formatDataToAdopt,
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UErrorCode& status);
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/**
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* Construct a SimpleDateFormat using the given pattern and locale-specific
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* symbol data. The DateFormatSymbols object is NOT adopted; the caller
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* remains responsible for deleting it.
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*/
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SimpleDateFormat(const UnicodeString& pattern,
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const DateFormatSymbols& formatData,
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UErrorCode& status);
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/**
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* Copy constructor.
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*/
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SimpleDateFormat(const SimpleDateFormat&);
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/**
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* Assignment operator.
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*/
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SimpleDateFormat& operator=(const SimpleDateFormat&);
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/**
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* Destructor.
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*/
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virtual ~SimpleDateFormat();
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/**
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* Clone this Format object polymorphically. The caller owns the result and
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* should delete it when done.
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*/
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virtual Format* clone(void) const;
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/**
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* Return true if the given Format objects are semantically equal. Objects
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* of different subclasses are considered unequal.
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*/
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virtual bool_t operator==(const Format& other) const;
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/**
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* Format a date or time, which is the standard millis since 24:00 GMT, Jan
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* 1, 1970. Overrides DateFormat pure virtual method.
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* <P>
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* Example: using the US locale: "yyyy.MM.dd e 'at' HH:mm:ss zzz" ->>
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* 1996.07.10 AD at 15:08:56 PDT
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*
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* @param date The date-time value to be formatted into a date-time string.
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* @param toAppendTo The result of the formatting operation is appended to this
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* string.
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* @param pos The formatting position. On input: an alignment field,
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* if desired. On output: the offsets of the alignment field.
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* @return A reference to 'toAppendTo'.
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*/
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virtual UnicodeString& format( UDate date,
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UnicodeString& toAppendTo,
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FieldPosition& pos) const;
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/**
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* Format a date or time, which is the standard millis since 24:00 GMT, Jan
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* 1, 1970. Overrides DateFormat pure virtual method.
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* <P>
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* Example: using the US locale: "yyyy.MM.dd e 'at' HH:mm:ss zzz" ->>
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* 1996.07.10 AD at 15:08:56 PDT
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*
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* @param obj A Formattable containing the date-time value to be formatted
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* into a date-time string. If the type of the Formattable
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* is a numeric type, it is treated as if it were an
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* instance of Date.
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* @param toAppendTo The result of the formatting operation is appended to this
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* string.
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* @param pos The formatting position. On input: an alignment field,
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* if desired. On output: the offsets of the alignment field.
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* @return A reference to 'toAppendTo'.
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*/
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virtual UnicodeString& format( const Formattable& obj,
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UnicodeString& toAppendTo,
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FieldPosition& pos,
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UErrorCode& status) const;
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/**
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* Redeclared DateFormat method.
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*/
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UnicodeString& format(const Formattable& obj,
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UnicodeString& result,
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UErrorCode& status) const;
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/**
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* Redeclared DateFormat method.
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*/
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UnicodeString& format(UDate date, UnicodeString& result) const;
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/**
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* Parse a date/time string starting at the given parse position. For
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* example, a time text "07/10/96 4:5 PM, PDT" will be parsed into a Date
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* that is equivalent to Date(837039928046).
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* <P>
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* By default, parsing is lenient: If the input is not in the form used by
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* this object's format method but can still be parsed as a date, then the
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* parse succeeds. Clients may insist on strict adherence to the format by
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* calling setLenient(false).
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*
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* @see DateFormat::setLenient(boolean)
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*
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* @param text The date/time string to be parsed
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* @param pos On input, the position at which to start parsing; on
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* output, the position at which parsing terminated, or the
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* start position if the parse failed.
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* @return A valid UDate if the input could be parsed.
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*/
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virtual UDate parse( const UnicodeString& text,
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ParsePosition& pos) const;
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/**
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* Parse a date/time string. For example, a time text "07/10/96 4:5 PM, PDT"
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* will be parsed into a UDate that is equivalent to Date(837039928046).
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* Parsing begins at the beginning of the string and proceeds as far as
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* possible. Assuming no parse errors were encountered, this function
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* doesn't return any information about how much of the string was consumed
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* by the parsing. If you need that information, use the version of
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* parse() that takes a ParsePosition.
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*
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* @param text The date/time string to be parsed
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* @param status Filled in with U_ZERO_ERROR if the parse was successful, and with
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* an error value if there was a parse error.
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* @return A valid UDate if the input could be parsed.
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*/
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virtual UDate parse( const UnicodeString& text,
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UErrorCode& status) const;
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/**
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* Set the start UDate used to interpret two-digit year strings.
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* When dates are parsed having 2-digit year strings, they are placed within
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* a assumed range of 100 years starting on the two digit start date. For
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* example, the string "24-Jan-17" may be in the year 1817, 1917, 2017, or
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* some other year. SimpleDateFormat chooses a year so that the resultant
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* date is on or after the two digit start date and within 100 years of the
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* two digit start date.
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* <P>
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* By default, the two digit start date is set to 80 years before the current
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* time at which a SimpleDateFormat object is created.
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*/
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virtual void set2DigitYearStart(UDate d, UErrorCode& status);
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/**
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* Get the start UDate used to interpret two-digit year strings.
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* When dates are parsed having 2-digit year strings, they are placed within
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* a assumed range of 100 years starting on the two digit start date. For
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* example, the string "24-Jan-17" may be in the year 1817, 1917, 2017, or
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* some other year. SimpleDateFormat chooses a year so that the resultant
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* date is on or after the two digit start date and within 100 years of the
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* two digit start date.
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* <P>
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* By default, the two digit start date is set to 80 years before the current
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* time at which a SimpleDateFormat object is created.
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*/
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UDate get2DigitYearStart(UErrorCode& status) const;
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/**
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* Return a pattern string describing this date format.
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*/
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virtual UnicodeString& toPattern(UnicodeString& result) const;
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/**
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* Return a localized pattern string describing this date format.
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* In most cases, this will return the same thing as toPattern(),
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* but a locale can specify characters to use in pattern descriptions
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* in place of the ones described in this class's class documentation.
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* (Presumably, letters that would be more mnemonic in that locale's
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* language.) This function would produce a pattern using those
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* letters.
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*
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* @param result Receives the localized pattern.
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* @param status Output param set to success/failure code on
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* exit. If the pattern is invalid, this will be
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* set to a failure result.
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*/
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virtual UnicodeString& toLocalizedPattern(UnicodeString& result,
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UErrorCode& status) const;
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/**
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* Apply the given unlocalized pattern string to this date format.
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* (i.e., after this call, this formatter will format dates according to
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* the new pattern)
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*
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* @param pattern The pattern to be applied.
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*/
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virtual void applyPattern(const UnicodeString& pattern);
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/**
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* Apply the given localized pattern string to this date format.
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* (see toLocalizedPattern() for more information on localized patterns.)
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*
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* @param pattern The localized pattern to be applied.
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* @param status Output param set to success/failure code on
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* exit. If the pattern is invalid, this will be
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* set to a failure result.
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*/
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virtual void applyLocalizedPattern(const UnicodeString& pattern,
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UErrorCode& status);
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/**
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* Gets the date/time formatting symbols (this is an object carrying
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* the various strings and other symbols used in formatting: e.g., month
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* names and abbreviations, time zone names, AM/PM strings, etc.)
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* @return a copy of the date-time formatting data associated
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* with this date-time formatter.
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*/
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virtual const DateFormatSymbols* getDateFormatSymbols(void) const;
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/**
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* Set the date/time formatting symbols. The caller no longer owns the
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* DateFormatSymbols object and should not delete it after making this call.
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* @param newFormatData the given date-time formatting data.
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*/
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virtual void adoptDateFormatSymbols(DateFormatSymbols* newFormatSymbols);
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/**
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* Set the date/time formatting data.
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* @param newFormatData the given date-time formatting data.
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*/
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virtual void setDateFormatSymbols(const DateFormatSymbols& newFormatSymbols);
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public:
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/**
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* Resource bundle file suffix and tag names used by this class.
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*/
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static const UnicodeString fgErasTag; // resource bundle tag for era names
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static const UnicodeString fgMonthNamesTag; // resource bundle tag for month names
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static const UnicodeString fgMonthAbbreviationsTag; // resource bundle tag for month abbreviations
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static const UnicodeString fgDayNamesTag; // resource bundle tag for day names
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static const UnicodeString fgDayAbbreviationsTag; // resource bundle tag for day abbreviations
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static const UnicodeString fgAmPmMarkersTag; // resource bundle tag for AM/PM strings
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static const UnicodeString fgDateTimePatternsTag; // resource bundle tag for default date and time patterns
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static const UnicodeString fgZoneStringsTag; // resource bundle tag for time zone names
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static const UnicodeString fgLocalPatternCharsTag; // resource bundle tag for localized pattern characters
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static const UnicodeString fgDefaultPattern; // date/time pattern of last resort
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public:
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/**
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* Return the class ID for this class. This is useful only for comparing to
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* a return value from getDynamicClassID(). For example:
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* <pre>
|
|
* . Base* polymorphic_pointer = createPolymorphicObject();
|
|
* . if (polymorphic_pointer->getDynamicClassID() ==
|
|
* . erived::getStaticClassID()) ...
|
|
* </pre>
|
|
* @return The class ID for all objects of this class.
|
|
*/
|
|
static UClassID getStaticClassID(void) { return (UClassID)&fgClassID; }
|
|
|
|
/**
|
|
* Returns a unique class ID POLYMORPHICALLY. Pure virtual override. This
|
|
* method is to implement a simple version of RTTI, since not all C++
|
|
* compilers support genuine RTTI. Polymorphic operator==() and clone()
|
|
* methods call this method.
|
|
*
|
|
* @return The class ID for this object. All objects of a
|
|
* given class have the same class ID. Objects of
|
|
* other classes have different class IDs.
|
|
*/
|
|
virtual UClassID getDynamicClassID(void) const { return getStaticClassID(); }
|
|
|
|
private:
|
|
static char fgClassID;
|
|
|
|
friend class DateFormat;
|
|
|
|
/**
|
|
* Gets the index for the given time zone ID to obtain the timezone strings
|
|
* for formatting. The time zone ID is just for programmatic lookup. NOT
|
|
* LOCALIZED!!!
|
|
*
|
|
* @param DateFormatSymbols a DateFormatSymbols object contianing the time zone names
|
|
* @param ID the given time zone ID.
|
|
* @return the index of the given time zone ID. Returns -1 if
|
|
* the given time zone ID can't be located in the
|
|
* DateFormatSymbols object.
|
|
* @see SimpleTimeZone
|
|
*/
|
|
//int32_t getZoneIndex(const DateFormatSymbols&, const UnicodeString& ID) const;
|
|
|
|
void initializeDefaultCentury(void);
|
|
|
|
/**
|
|
* Used by the DateFormat factory methods to construct a SimpleDateFormat.
|
|
*/
|
|
SimpleDateFormat(EStyle timeStyle, EStyle dateStyle, const Locale& locale, UErrorCode& status);
|
|
|
|
/**
|
|
* Construct a SimpleDateFormat for the given locale. If no resource data
|
|
* is available, create an object of last resort, using hard-coded strings.
|
|
* This is an internal method, called by DateFormat. It should never fail.
|
|
*/
|
|
SimpleDateFormat(const Locale& locale, UErrorCode& status); // Use default pattern
|
|
|
|
/**
|
|
* Called by format() to format a single field.
|
|
*
|
|
* @param result Filled in with the result.
|
|
* @param ch The format character we encountered in the pattern.
|
|
* @param count Number of characters in the current pattern symbol (e.g.,
|
|
* "yyyy" in the pattern would result in a call to this function
|
|
* with ch equal to 'y' and count equal to 4)
|
|
* @param beginOffset Tells where the text returned by this function will go in
|
|
* the finished string. Used when this function needs to fill
|
|
* in a FieldPosition
|
|
* @param pos The FieldPosition being filled in by the format() call. If
|
|
* this function is formatting the field specfied by pos, it
|
|
* will fill in pos will the beginning and ending offsets of the
|
|
* field.
|
|
* @param status Receives a status code, which will be U_ZERO_ERROR if the operation
|
|
* succeeds.
|
|
* @return A reference to "result".
|
|
*/
|
|
UnicodeString& subFormat( UnicodeString& result,
|
|
UChar ch,
|
|
int32_t count,
|
|
int32_t beginOffset,
|
|
FieldPosition& pos,
|
|
UErrorCode& status) const; // in case of illegal argument
|
|
|
|
/**
|
|
* Used by subFormat() to format a numeric value. Fills in "result" with a string
|
|
* representation of "value" having a number of digits between "minDigits" and
|
|
* "maxDigits". Uses the DateFormat's NumberFormat.
|
|
* @param result Filled in with the formatted number.
|
|
* @param value Value to format.
|
|
* @param minDigits Minimum number of digits the result should have
|
|
* @param maxDigits Maximum number of digits the result should have
|
|
* @return A reference to "result".
|
|
*/
|
|
UnicodeString& zeroPaddingNumber(UnicodeString& result,
|
|
int32_t value,
|
|
int32_t minDigits,
|
|
int32_t maxDigits) const;
|
|
|
|
/**
|
|
* Called by several of the constructors to load pattern data and formatting symbols
|
|
* out of a resource bundle and initialize the locale based on it.
|
|
* @param timeStyle The time style, as passed to DateFormat::createDateInstance().
|
|
* @param dateStyle The date style, as passed to DateFormat::createTimeInstance().
|
|
* @param locale The locale to load the patterns from.
|
|
* @param status Filled in with an error code if loading the data from the
|
|
* resources fails.
|
|
*/
|
|
void construct(EStyle timeStyle, EStyle dateStyle, const Locale& locale, UErrorCode& status);
|
|
|
|
/**
|
|
* Called by construct() and the various constructors to set up the SimpleDateFormat's
|
|
* Calendar and NumberFormat objects.
|
|
* @param locale The locale for which we want a Calendar and a NumberFormat.
|
|
* @param statuc Filled in with an error code if creating either subobject fails.
|
|
*/
|
|
void initialize(const Locale& locale, UErrorCode& status);
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
int32_t matchString(const UnicodeString& text, UTextOffset start, Calendar::EDateFields field,
|
|
const UnicodeString* stringArray, int32_t stringArrayCount) const;
|
|
|
|
/**
|
|
* 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 count is strictly obeyed.
|
|
* @return the new start position if matching succeeded; a negative number
|
|
* indicating matching failure, otherwise.
|
|
*/
|
|
int32_t subParse(const UnicodeString& text, int32_t& start, UChar ch, int32_t count,
|
|
bool_t obeyCount, bool_t ambiguousYear[]) const;
|
|
|
|
/**
|
|
* Parse the given text, at the given position, as a numeric value, using
|
|
* this object's NumberFormat. Return the corresponding long value in the
|
|
* fill-in parameter 'value'. If the parse fails, this method leaves pos
|
|
* unchanged and returns FALSE; otherwise it advances pos and
|
|
* returns TRUE.
|
|
*/
|
|
//bool_t subParseLong(const UnicodeString& text, ParsePosition& pos, int32_t& value) const;
|
|
|
|
/**
|
|
* Translate a pattern, mapping each character in the from string to the
|
|
* corresponding character in the to string. Return an error if the original
|
|
* pattern contains an unmapped character, or if a quote is unmatched.
|
|
* Quoted (single quotes only) material is not translated.
|
|
*/
|
|
static void translatePattern(const UnicodeString& originalPattern,
|
|
UnicodeString& translatedPattern,
|
|
const UnicodeString& from,
|
|
const UnicodeString& to,
|
|
UErrorCode& status);
|
|
/**
|
|
* Given a zone ID, try to locate it in our time zone array. Return the
|
|
* index (row index) of the found time zone, or -1 if we can't find it.
|
|
*/
|
|
//int32_t getZoneIndex(const UnicodeString& ID) const;
|
|
|
|
/**
|
|
* Sets the starting date of the 100-year window that dates with 2-digit years
|
|
* are considered to fall within.
|
|
*/
|
|
void parseAmbiguousDatesAsAfter(UDate startDate, UErrorCode& status);
|
|
|
|
/**
|
|
* Returns the beginning date of the 100-year window that dates with 2-digit years
|
|
* are considered to fall within.
|
|
*/
|
|
UDate internalGetDefaultCenturyStart(void) const;
|
|
|
|
/**
|
|
* Returns the first year of the 100-year window that dates with 2-digit years
|
|
* are considered to fall within.
|
|
*/
|
|
int32_t internalGetDefaultCenturyStartYear(void) const;
|
|
|
|
/**
|
|
* Initializes the 100-year window that dates with 2-digit years are considered
|
|
* to fall within so that its start date is 80 years before the current time.
|
|
*/
|
|
static void initializeSystemDefaultCentury(void);
|
|
|
|
/**
|
|
* Last-resort string to use for "GMT" when constructing time zone strings.
|
|
*/
|
|
// For time zones that have no names, use strings GMT+minutes and
|
|
// GMT-minutes. For instance, in France the time zone is GMT+60.
|
|
static const UnicodeString fgGmtPlus;
|
|
static const UnicodeString fgGmtMinus;
|
|
static const UnicodeString fgGmt;
|
|
|
|
/**
|
|
* Used to map pattern characters to Calendar field identifiers.
|
|
*/
|
|
static const Calendar::EDateFields fgPatternIndexToCalendarField[];
|
|
|
|
/**
|
|
* Map index into pattern character string to DateFormat field number
|
|
*/
|
|
static const DateFormat::EField fgPatternIndexToDateFormatField[];
|
|
|
|
/**
|
|
* The formatting pattern for this formatter.
|
|
*/
|
|
UnicodeString fPattern;
|
|
|
|
/**
|
|
* A pointer to an object containing the strings to use in formatting (e.g.,
|
|
* month and day names, AM and PM strings, time zone names, etc.)
|
|
*/
|
|
DateFormatSymbols* fSymbols; // Owned
|
|
|
|
/**
|
|
* If dates have ambiguous years, we map them into the century starting
|
|
* at defaultCenturyStart, which may be any date. If defaultCenturyStart is
|
|
* set to SYSTEM_DEFAULT_CENTURY, which it is by default, then the system
|
|
* values are used. The instance values defaultCenturyStart and
|
|
* defaultCenturyStartYear are only used if explicitly set by the user
|
|
* through the API method parseAmbiguousDatesAsAfter().
|
|
*/
|
|
UDate fDefaultCenturyStart;
|
|
|
|
/**
|
|
* See documentation for defaultCenturyStart.
|
|
*/
|
|
/*transient*/ int32_t fDefaultCenturyStartYear;
|
|
|
|
/**
|
|
* The system maintains a static default century start date. This is initialized
|
|
* the first time it is used. Before then, it is set to SYSTEM_DEFAULT_CENTURY to
|
|
* indicate an uninitialized state. Once the system default century date and year
|
|
* are set, they do not change.
|
|
*/
|
|
static UDate fgSystemDefaultCenturyStart;
|
|
|
|
/**
|
|
* See documentation for systemDefaultCenturyStart.
|
|
*/
|
|
static int32_t fgSystemDefaultCenturyStartYear;
|
|
|
|
/**
|
|
* Default value that indicates the defaultCenturyStartYear is unitialized
|
|
*/
|
|
static const int32_t fgSystemDefaultCenturyYear;
|
|
|
|
public:
|
|
/**
|
|
* If a start date is set to this value, that indicates that the system default
|
|
* start is in effect for this instance.
|
|
*/
|
|
static const UDate fgSystemDefaultCentury;
|
|
};
|
|
|
|
inline UDate
|
|
SimpleDateFormat::get2DigitYearStart(UErrorCode& status) const
|
|
{
|
|
return fDefaultCenturyStart;
|
|
}
|
|
|
|
inline UnicodeString&
|
|
SimpleDateFormat::format(const Formattable& obj,
|
|
UnicodeString& result,
|
|
UErrorCode& status) const {
|
|
// Don't use Format:: - use immediate base class only,
|
|
// in case immediate base modifies behavior later.
|
|
return DateFormat::format(obj, result, status);
|
|
}
|
|
|
|
inline UnicodeString&
|
|
SimpleDateFormat::format(UDate date, UnicodeString& result) const {
|
|
return DateFormat::format(date, result);
|
|
}
|
|
|
|
#endif // _SMPDTFMT
|
|
//eof
|