FM / unicode

/usr/include/unicode

Name	Size	Mode	Actions
basictz.h	8913	0644	edit dl rm
bms.h	8664	0644	edit dl rm
bmsearch.h	7316	0644	edit dl rm
brkiter.h	23001	0644	edit dl rm
bytestream.h	8531	0644	edit dl rm
calendar.h	90659	0644	edit dl rm
caniter.h	7288	0644	edit dl rm
chariter.h	24186	0644	edit dl rm
choicfmt.h	29528	0644	edit dl rm
coleitr.h	12990	0644	edit dl rm
coll.h	48468	0644	edit dl rm
colldata.h	11957	0644	edit dl rm
curramt.h	3659	0644	edit dl rm
currpinf.h	7061	0644	edit dl rm
currunit.h	3057	0644	edit dl rm
datefmt.h	27946	0644	edit dl rm
dbbi.h	966	0644	edit dl rm
dcfmtsym.h	14040	0644	edit dl rm
decimfmt.h	88612	0644	edit dl rm
docmain.h	6003	0644	edit dl rm
dtfmtsym.h	26145	0644	edit dl rm
dtintrv.h	3734	0644	edit dl rm
dtitvfmt.h	39700	0644	edit dl rm
dtitvinf.h	18704	0644	edit dl rm
dtptngen.h	17303	0644	edit dl rm
dtrule.h	8718	0644	edit dl rm
errorcode.h	4361	0644	edit dl rm
fieldpos.h	8713	0644	edit dl rm
fmtable.h	18794	0644	edit dl rm
format.h	12083	0644	edit dl rm
gregocal.h	33797	0644	edit dl rm
locid.h	30241	0644	edit dl rm
measfmt.h	1897	0644	edit dl rm
measunit.h	1635	0644	edit dl rm
measure.h	3321	0644	edit dl rm
msgfmt.h	39435	0644	edit dl rm
normlzr.h	30337	0644	edit dl rm
numfmt.h	33987	0644	edit dl rm
numsys.h	5004	0644	edit dl rm
parseerr.h	3044	0644	edit dl rm
parsepos.h	5468	0644	edit dl rm
platform.h	9961	0644	edit dl rm
plurfmt.h	23079	0644	edit dl rm
plurrule.h	9901	0644	edit dl rm
ppalmos.h	6992	0644	edit dl rm
putil.h	6686	0644	edit dl rm
pwin32.h	8668	0644	edit dl rm
rbbi.h	26993	0644	edit dl rm
rbnf.h	45681	0644	edit dl rm
rbtz.h	15695	0644	edit dl rm
regex.h	52316	0644	edit dl rm
rep.h	9559	0644	edit dl rm
resbund.h	18130	0644	edit dl rm
schriter.h	6293	0644	edit dl rm
search.h	22357	0644	edit dl rm
simpletz.h	46179	0644	edit dl rm
smpdtfmt.h	48325	0644	edit dl rm
sortkey.h	11111	0644	edit dl rm
std_string.h	1769	0644	edit dl rm
strenum.h	9888	0644	edit dl rm
stringpiece.h	5484	0644	edit dl rm
stsearch.h	22287	0644	edit dl rm
symtable.h	4199	0644	edit dl rm
tblcoll.h	38199	0644	edit dl rm
timezone.h	34584	0644	edit dl rm
tmunit.h	3454	0644	edit dl rm
tmutamt.h	4787	0644	edit dl rm
tmutfmt.h	8669	0644	edit dl rm
translit.h	54780	0644	edit dl rm
tzrule.h	36057	0644	edit dl rm
tztrans.h	6101	0644	edit dl rm
ubidi.h	83092	0644	edit dl rm
ubrk.h	17688	0644	edit dl rm
ucal.h	40177	0644	edit dl rm
ucasemap.h	16420	0644	edit dl rm
ucat.h	5371	0644	edit dl rm
uchar.h	111062	0644	edit dl rm
uchriter.h	13132	0644	edit dl rm
uclean.h	11855	0644	edit dl rm
ucnv.h	83111	0644	edit dl rm
ucnvsel.h	5630	0644	edit dl rm
ucnv_cb.h	6635	0644	edit dl rm
ucnv_err.h	21375	0644	edit dl rm
ucol.h	48826	0644	edit dl rm
ucoleitr.h	12356	0644	edit dl rm
uconfig.h	6035	0644	edit dl rm
ucsdet.h	12464	0644	edit dl rm
ucurr.h	11572	0644	edit dl rm
udat.h	34496	0644	edit dl rm
udata.h	14265	0644	edit dl rm
udatpg.h	18715	0644	edit dl rm
udeprctd.h	2284	0644	edit dl rm
udraft.h	7600	0644	edit dl rm
uenum.h	5796	0644	edit dl rm
uidna.h	15918	0644	edit dl rm
uintrnal.h	15752	0644	edit dl rm
uiter.h	23234	0644	edit dl rm
uloc.h	44548	0644	edit dl rm
ulocdata.h	9739	0644	edit dl rm
umachine.h	11360	0644	edit dl rm
umisc.h	1255	0644	edit dl rm
umsg.h	26076	0644	edit dl rm
unifilt.h	3770	0644	edit dl rm
unifunct.h	3966	0644	edit dl rm
unimatch.h	6071	0644	edit dl rm
unirepl.h	3290	0644	edit dl rm
uniset.h	61771	0644	edit dl rm
unistr.h	161321	0644	edit dl rm
unorm.h	23621	0644	edit dl rm
unum.h	32145	0644	edit dl rm
uobject.h	11393	0644	edit dl rm
uobslete.h	852	0644	edit dl rm
uregex.h	43948	0644	edit dl rm
urename.h	92538	0644	edit dl rm
urep.h	5394	0644	edit dl rm
ures.h	36348	0644	edit dl rm
uscript.h	11360	0644	edit dl rm
usearch.h	34223	0644	edit dl rm
uset.h	39868	0644	edit dl rm
usetiter.h	9606	0644	edit dl rm
ushape.h	17907	0644	edit dl rm
uspoof.h	38752	0644	edit dl rm
usprep.h	7750	0644	edit dl rm
ustdio.h	35333	0644	edit dl rm
ustream.h	1891	0644	edit dl rm
ustring.h	69383	0644	edit dl rm
usystem.h	1925	0644	edit dl rm
utext.h	58394	0644	edit dl rm
utf.h	8273	0644	edit dl rm
utf8.h	20512	0644	edit dl rm
utf16.h	18776	0644	edit dl rm
utf32.h	653	0644	edit dl rm
utf_old.h	43646	0644	edit dl rm
utmscale.h	13689	0644	edit dl rm
utrace.h	13355	0644	edit dl rm
utrans.h	23129	0644	edit dl rm
utypes.h	34513	0644	edit dl rm
uversion.h	10902	0644	edit dl rm
vtzone.h	20048	0644	edit dl rm

Edit: /usr/include/unicode/smpdtfmt.h (48325B)

/*
* Copyright (C) 1997-2009, International Business Machines Corporation and others. All Rights Reserved.
*******************************************************************************
*
* File SMPDTFMT.H
*
* Modification History:
*
*   Date        Name        Description
*   02/19/97    aliu        Converted from java.
*   07/09/97    helena      Make ParsePosition into a class.
*   07/21/98    stephen     Added GMT_PLUS, GMT_MINUS
*                            Changed setTwoDigitStartDate to set2DigitYearStart
*                            Changed getTwoDigitStartDate to get2DigitYearStart
*                            Removed subParseLong
*                            Removed getZoneIndex (added in DateFormatSymbols)
*   06/14/99    stephen     Removed fgTimeZoneDataSuffix
*   10/14/99    aliu        Updated class doc to describe 2-digit year parsing
*                           {j28 4182066}.
*******************************************************************************
*/

#ifndef SMPDTFMT_H
#define SMPDTFMT_H

#include "unicode/utypes.h"

/**
 * \file 
 * \brief C++ API: Format and parse dates in a language-independent manner.
 */
 
#if !UCONFIG_NO_FORMATTING

#include "unicode/datefmt.h"

U_NAMESPACE_BEGIN

class DateFormatSymbols;
class DateFormat;
class MessageFormat;

/**
 *
 * SimpleDateFormat is a concrete class for formatting and parsing dates in a
 * language-independent manner. It allows for formatting (millis -> text),
 * parsing (text -> millis), and normalization. Formats/Parses a date or time,
 * which is the standard milliseconds since 24:00 GMT, Jan 1, 1970.
 * 
 * Clients are encouraged to create a date-time formatter using DateFormat::getInstance(),
 * getDateInstance(), getDateInstance(), or getDateTimeInstance() rather than
 * explicitly constructing an instance of SimpleDateFormat. This way, the client
 * is guaranteed to get an appropriate formatting pattern for whatever locale the
 * program is running in. However, if the client needs something more unusual than
 * the default patterns in the locales, he can construct a SimpleDateFormat directly
 * and give it an appropriate pattern (or use one of the factory methods on DateFormat
 * and modify the pattern after the fact with toPattern() and applyPattern().
 * 
 * Date/Time format syntax:
 * 
 * The date/time format is specified by means of a string time pattern. In this
 * pattern, all ASCII letters are reserved as pattern letters, which are defined
 * as the following:
 * <pre>
 * \code
 * Symbol Meaning Presentation Example
 * ------ ------- ------------ -------
 * G era designator (Text) AD
 * y year (Number) 1996
 * Y year (week of year) (Number) 1997
 * u extended year (Number) 4601
 * Q Quarter (Text & Number) Q2 & 02
 * M month in year (Text & Number) July & 07
 * d day in month (Number) 10
 * h hour in am/pm (1~12) (Number) 12
 * H hour in day (0~23) (Number) 0
 * m minute in hour (Number) 30
 * s second in minute (Number) 55
 * S fractional second (Number) 978
 * E day of week (Text) Tuesday
 * e day of week (local 1~7) (Text & Number) Tues & 2
 * D day in year (Number) 189
 * F day of week in month (Number) 2 (2nd Wed in July)
 * w week in year (Number) 27
 * W week in month (Number) 2
 * a am/pm marker (Text) PM
 * k hour in day (1~24) (Number) 24
 * K hour in am/pm (0~11) (Number) 0
 * z time zone (Time) Pacific Standard Time
 * Z time zone (RFC 822) (Number) -0800
 * v time zone (generic) (Text) Pacific Time
 * V time zone (abreviation) (Text) PT
 * VVVV time zone (location) (Text) United States (Los Angeles)
 * g Julian day (Number) 2451334
 * A milliseconds in day (Number) 69540000
 * q stand alone quarter (Text & Number) Q2 & 02
 * L stand alone month (Text & Number) July & 07
 * c stand alone day of week (Text & Number) Tuesday & 2
 * ' escape for text (Delimiter) 'Date='
 * '' single quote (Literal) 'o''clock'
 * \endcode
 * </pre>
 * The count of pattern letters determine the format.
 * 
 * (Text): 4 or more, use full form, &lt;4, use short or abbreviated form if it
 * exists. (e.g., "EEEE" produces "Monday", "EEE" produces "Mon")
 * 
 * (Number): the minimum number of digits. Shorter numbers are zero-padded to
 * this amount (e.g. if "m" produces "6", "mm" produces "06"). Year is handled
 * specially; that is, if the count of 'y' is 2, the Year will be truncated to 2 digits.
 * (e.g., if "yyyy" produces "1997", "yy" produces "97".)
 * Unlike other fields, fractional seconds are padded on the right with zero.
 * 
 * (Text & Number): 3 or over, use text, otherwise use number. (e.g., "M" produces "1",
 * "MM" produces "01", "MMM" produces "Jan", and "MMMM" produces "January".)
 * 
 * Any characters in the pattern that are not in the ranges of ['a'..'z'] and
 * ['A'..'Z'] will be treated as quoted text. For instance, characters
 * like ':', '.', ' ', '#' and '@' will appear in the resulting time text
 * even they are not embraced within single quotes.
 * 
 * A pattern containing any invalid pattern letter will result in a failing
 * UErrorCode result during formatting or parsing.
 * 
 * Examples using the US locale:
 * <pre>
 * \code
 * Format Pattern Result
 * -------------- -------
 * "yyyy.MM.dd G 'at' HH:mm:ss vvvv" ->> 1996.07.10 AD at 15:08:56 Pacific Time
 * "EEE, MMM d, ''yy" ->> Wed, July 10, '96
 * "h:mm a" ->> 12:08 PM
 * "hh 'o''clock' a, zzzz" ->> 12 o'clock PM, Pacific Daylight Time
 * "K:mm a, vvv" ->> 0:00 PM, PT
 * "yyyyy.MMMMM.dd GGG hh:mm aaa" ->> 1996.July.10 AD 12:08 PM
 * \endcode
 * </pre>
 * Code Sample:
 * <pre>
 * \code
 * UErrorCode success = U_ZERO_ERROR;
 * SimpleTimeZone* pdt = new SimpleTimeZone(-8 * 60 * 60 * 1000, "PST");
 * pdt->setStartRule( Calendar::APRIL, 1, Calendar::SUNDAY, 2*60*60*1000);
 * pdt->setEndRule( Calendar::OCTOBER, -1, Calendar::SUNDAY, 2*60*60*1000);
 *
 * // Format the current time.
 * SimpleDateFormat* formatter
 * = new SimpleDateFormat ("yyyy.MM.dd G 'at' hh:mm:ss a zzz", success );
 * GregorianCalendar cal(success);
 * UDate currentTime_1 = cal.getTime(success);
 * FieldPosition fp(0);
 * UnicodeString dateString;
 * formatter->format( currentTime_1, dateString, fp );
 * cout << "result: " << dateString << endl;
 *
 * // Parse the previous string back into a Date.
 * ParsePosition pp(0);
 * UDate currentTime_2 = formatter->parse(dateString, pp );
 * \endcode
 * </pre>
 * In the above example, the time value "currentTime_2" obtained from parsing
 * will be equal to currentTime_1. However, they may not be equal if the am/pm
 * marker 'a' is left out from the format pattern while the "hour in am/pm"
 * pattern symbol is used. This information loss can happen when formatting the
 * time in PM.
 *
 * 
 * When parsing a date string using the abbreviated year pattern ("y" or "yy"),
 * SimpleDateFormat 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 SimpleDateFormat
 * instance is created. For example, using a pattern of "MM/dd/yy" and a
 * SimpleDateFormat 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
 * <code>Unicode::isDigit()</code>, 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.
 *
 * 
 * If the year pattern has more than two 'y' characters, 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.
 *
 * 
 * When numeric fields abut one another directly, with no intervening delimiter
 * characters, they constitute a run of abutting numeric fields. Such runs are
 * parsed specially. For example, the format "HHmmss" parses the input text
 * "123456" to 12:34:56, parses the input text "12345" to 1:23:45, and fails to
 * parse "1234". In other words, the leftmost field of the run is flexible,
 * while the others keep a fixed width. If the parse fails anywhere in the run,
 * then the leftmost field is shortened by one character, and the entire run is
 * parsed again. This is repeated until either the parse succeeds or the
 * leftmost field is one character in length. If the parse still fails at that
 * point, the parse of the run fails.
 *
 * 
 * For time zones that have no names, SimpleDateFormat uses strings GMT+hours:minutes or
 * GMT-hours:minutes.
 * 
 * The calendar defines what is the first day of the week, the first week of the
 * year, whether hours are zero based or not (0 vs 12 or 24), and the timezone.
 * There is one common number format to handle all the numbers; the digit count
 * is handled programmatically according to the pattern.
 *
 * User subclasses are not supported. While clients may write
 * subclasses, such code will not necessarily work and will not be
 * guaranteed to work stably from release to release.
 */
class U_I18N_API SimpleDateFormat: public DateFormat {
public:
 /**
 * Construct a SimpleDateFormat using the default pattern for the default
 * locale.
 * 
 * [Note:] Not all locales support SimpleDateFormat; for full generality,
 * use the factory methods in the DateFormat class.
 * @param status Output param set to success/failure code.
 * @stable ICU 2.0
 */
 SimpleDateFormat(UErrorCode& status);

/**
 * Construct a SimpleDateFormat using the given pattern and the default locale.
 * The locale is used to obtain the symbols used in formatting (e.g., the
 * names of the months), but not to provide the pattern.
 * 
 * [Note:] Not all locales support SimpleDateFormat; for full generality,
 * use the factory methods in the DateFormat class.
 * @param pattern the pattern for the format.
 * @param status Output param set to success/failure code.
 * @stable ICU 2.0
 */
 SimpleDateFormat(const UnicodeString& pattern,
 UErrorCode& status);

/**
 * Construct a SimpleDateFormat using the given pattern, numbering system override, and the default locale.
 * The locale is used to obtain the symbols used in formatting (e.g., the
 * names of the months), but not to provide the pattern.
 * 
 * A numbering system override is a string containing either the name of a known numbering system,
 * or a set of field and numbering system pairs that specify which fields are to be formattied with
 * the alternate numbering system. For example, to specify that all numeric fields in the specified
 * date or time pattern are to be rendered using Thai digits, simply specify the numbering system override
 * as "thai". To specify that just the year portion of the date be formatted using Hebrew numbering,
 * use the override string "y=hebrew". Numbering system overrides can be combined using a semi-colon
 * character in the override string, such as "d=decimal;M=arabic;y=hebrew", etc.
 *
 * 
 * [Note:] Not all locales support SimpleDateFormat; for full generality,
 * use the factory methods in the DateFormat class.
 * @param pattern the pattern for the format.
 * @param override the override string.
 * @param status Output param set to success/failure code.
 * @draft ICU 4.2
 */
 SimpleDateFormat(const UnicodeString& pattern,
 const UnicodeString& override,
 UErrorCode& status);

/**
 * Construct a SimpleDateFormat using the given pattern and locale.
 * The locale is used to obtain the symbols used in formatting (e.g., the
 * names of the months), but not to provide the pattern.
 * 
 * [Note:] Not all locales support SimpleDateFormat; for full generality,
 * use the factory methods in the DateFormat class.
 * @param pattern the pattern for the format.
 * @param locale the given locale.
 * @param status Output param set to success/failure code.
 * @stable ICU 2.0
 */
 SimpleDateFormat(const UnicodeString& pattern,
 const Locale& locale,
 UErrorCode& status);

/**
 * Construct a SimpleDateFormat using the given pattern, numbering system override, and locale.
 * The locale is used to obtain the symbols used in formatting (e.g., the
 * names of the months), but not to provide the pattern.
 * 
 * A numbering system override is a string containing either the name of a known numbering system,
 * or a set of field and numbering system pairs that specify which fields are to be formattied with
 * the alternate numbering system. For example, to specify that all numeric fields in the specified
 * date or time pattern are to be rendered using Thai digits, simply specify the numbering system override
 * as "thai". To specify that just the year portion of the date be formatted using Hebrew numbering,
 * use the override string "y=hebrew". Numbering system overrides can be combined using a semi-colon
 * character in the override string, such as "d=decimal;M=arabic;y=hebrew", etc.
 * 
 * [Note:] Not all locales support SimpleDateFormat; for full generality,
 * use the factory methods in the DateFormat class.
 * @param pattern the pattern for the format.
 * @param override the numbering system override.
 * @param locale the given locale.
 * @param status Output param set to success/failure code.
 * @draft ICU 4.2
 */
 SimpleDateFormat(const UnicodeString& pattern,
 const UnicodeString& override,
 const Locale& locale,
 UErrorCode& status);

/**
     * Construct a SimpleDateFormat using the given pattern and locale-specific
     * symbol data.  The formatter takes ownership of the DateFormatSymbols object;
     * the caller is no longer responsible for deleting it.
     * @param pattern           the given pattern for the format.
     * @param formatDataToAdopt the symbols to be adopted.
     * @param status            Output param set to success/faulure code.
     * @stable ICU 2.0
     */
    SimpleDateFormat(const UnicodeString& pattern,
                     DateFormatSymbols* formatDataToAdopt,
                     UErrorCode& status);

/**
     * Construct a SimpleDateFormat using the given pattern and locale-specific
     * symbol data.  The DateFormatSymbols object is NOT adopted; the caller
     * remains responsible for deleting it.
     * @param pattern           the given pattern for the format.
     * @param formatData        the formatting symbols to be use.
     * @param status            Output param set to success/faulure code.
     * @stable ICU 2.0
     */
    SimpleDateFormat(const UnicodeString& pattern,
                     const DateFormatSymbols& formatData,
                     UErrorCode& status);

/**
     * Copy constructor.
     * @stable ICU 2.0
     */
    SimpleDateFormat(const SimpleDateFormat&);

/**
     * Assignment operator.
     * @stable ICU 2.0
     */
    SimpleDateFormat& operator=(const SimpleDateFormat&);

/**
     * Destructor.
     * @stable ICU 2.0
     */
    virtual ~SimpleDateFormat();

/**
     * Clone this Format object polymorphically. The caller owns the result and
     * should delete it when done.
     * @return    A copy of the object.
     * @stable ICU 2.0
     */
    virtual Format* clone(void) const;

/**
     * Return true if the given Format objects are semantically equal. Objects
     * of different subclasses are considered unequal.
     * @param other    the object to be compared with.
     * @return         true if the given Format objects are semantically equal.
     * @stable ICU 2.0
     */
    virtual UBool operator==(const Format& other) const;

/**
 * Format a date or time, which is the standard millis since 24:00 GMT, Jan
 * 1, 1970. Overrides DateFormat pure virtual method.
 * 
 * Example: using the US locale: "yyyy.MM.dd e 'at' HH:mm:ss zzz" ->>
 * 1996.07.10 AD at 15:08:56 PDT
 *
 * @param cal Calendar set to the date and time to be formatted
 * into a date/time string.
 * @param appendTo Output parameter to receive result.
 * Result is appended to existing contents.
 * @param pos The formatting position. On input: an alignment field,
 * if desired. On output: the offsets of the alignment field.
 * @return Reference to 'appendTo' parameter.
 * @stable ICU 2.1
 */
 virtual UnicodeString& format( Calendar& cal,
 UnicodeString& appendTo,
 FieldPosition& pos) const;

/**
 * Format a date or time, which is the standard millis since 24:00 GMT, Jan
 * 1, 1970. Overrides DateFormat pure virtual method.
 * 
 * Example: using the US locale: "yyyy.MM.dd e 'at' HH:mm:ss zzz" ->>
 * 1996.07.10 AD at 15:08:56 PDT
 *
 * @param obj A Formattable containing the date-time value to be formatted
 * into a date-time string. If the type of the Formattable
 * is a numeric type, it is treated as if it were an
 * instance of Date.
 * @param appendTo Output parameter to receive result.
 * Result is appended to existing contents.
 * @param pos The formatting position. On input: an alignment field,
 * if desired. On output: the offsets of the alignment field.
 * @param status Output param set to success/faulure code.
 * @return Reference to 'appendTo' parameter.
 * @stable ICU 2.0
 */
 virtual UnicodeString& format( const Formattable& obj,
 UnicodeString& appendTo,
 FieldPosition& pos,
 UErrorCode& status) const;

/**
     * Redeclared DateFormat method.
     * @param date          the Date value to be formatted.
     * @param appendTo      Output parameter to receive result.
     *                      Result is appended to existing contents.
     * @param fieldPosition The formatting position. On input: an alignment field,
     *                      if desired. On output: the offsets of the alignment field.
     * @return              Reference to 'appendTo' parameter.
     * @stable ICU 2.1
     */
    UnicodeString& format(UDate date,
                          UnicodeString& appendTo,
                          FieldPosition& fieldPosition) const;

/**
     * Redeclared DateFormat method.
     * @param obj       Object to be formatted.
     * @param appendTo  Output parameter to receive result.
     *                  Result is appended to existing contents.
     * @param status    Input/output success/failure code.
     * @return          Reference to 'appendTo' parameter.
     * @stable ICU 2.0
     */
    UnicodeString& format(const Formattable& obj,
                          UnicodeString& appendTo,
                          UErrorCode& status) const;

/**
     * Redeclared DateFormat method.
     * @param date      Date value to be formatted.
     * @param appendTo  Output parameter to receive result.
     *                  Result is appended to existing contents.
     * @return          Reference to 'appendTo' parameter.
     * @stable ICU 2.0
     */
    UnicodeString& format(UDate date, UnicodeString& appendTo) const;

/**
 * Parse a date/time string beginning at the given parse position. For
 * example, a time text "07/10/96 4:5 PM, PDT" will be parsed into a Date
 * that is equivalent to Date(837039928046).
 * 
 * By default, parsing is lenient: If the input is not in the form used by
 * this object's format method but can still be parsed as a date, then the
 * parse succeeds. Clients may insist on strict adherence to the format by
 * calling setLenient(false).
 *
 * @param text The date/time string to be parsed
 * @param cal a Calendar set to the date and time to be formatted
 * into a date/time string.
 * @param pos On input, the position at which to start parsing; on
 * output, the position at which parsing terminated, or the
 * start position if the parse failed.
 * @return A valid UDate if the input could be parsed.
 * @stable ICU 2.1
 */
 virtual void parse( const UnicodeString& text,
 Calendar& cal,
 ParsePosition& pos) const;

/**
 * Parse a date/time string starting at the given parse position. For
 * example, a time text "07/10/96 4:5 PM, PDT" will be parsed into a Date
 * that is equivalent to Date(837039928046).
 * 
 * By default, parsing is lenient: If the input is not in the form used by
 * this object's format method but can still be parsed as a date, then the
 * parse succeeds. Clients may insist on strict adherence to the format by
 * calling setLenient(false).
 *
 * @see DateFormat::setLenient(boolean)
 *
 * @param text The date/time string to be parsed
 * @param pos On input, the position at which to start parsing; on
 * output, the position at which parsing terminated, or the
 * start position if the parse failed.
 * @return A valid UDate if the input could be parsed.
 * @stable ICU 2.0
 */
 UDate parse( const UnicodeString& text,
 ParsePosition& pos) const;

/**
     * Parse a date/time string. For example, a time text "07/10/96 4:5 PM, PDT"
     * will be parsed into a UDate that is equivalent to Date(837039928046).
     * Parsing begins at the beginning of the string and proceeds as far as
     * possible.  Assuming no parse errors were encountered, this function
     * doesn't return any information about how much of the string was consumed
     * by the parsing.  If you need that information, use the version of
     * parse() that takes a ParsePosition.
     *
     * @param text  The date/time string to be parsed
     * @param status Filled in with U_ZERO_ERROR if the parse was successful, and with
     *              an error value if there was a parse error.
     * @return      A valid UDate if the input could be parsed.
     * @stable ICU 2.0
     */
    virtual UDate parse( const UnicodeString& text,
                        UErrorCode& status) const;

/**
 * Set the start UDate used to interpret two-digit year strings.
 * When dates are parsed having 2-digit year strings, they are placed within
 * a assumed range of 100 years starting on the two digit start date. For
 * example, the string "24-Jan-17" may be in the year 1817, 1917, 2017, or
 * some other year. SimpleDateFormat chooses a year so that the resultant
 * date is on or after the two digit start date and within 100 years of the
 * two digit start date.
 * 
 * By default, the two digit start date is set to 80 years before the current
 * time at which a SimpleDateFormat object is created.
 * @param d start UDate used to interpret two-digit year strings.
 * @param status Filled in with U_ZERO_ERROR if the parse was successful, and with
 * an error value if there was a parse error.
 * @stable ICU 2.0
 */
 virtual void set2DigitYearStart(UDate d, UErrorCode& status);

/**
 * Get the start UDate used to interpret two-digit year strings.
 * When dates are parsed having 2-digit year strings, they are placed within
 * a assumed range of 100 years starting on the two digit start date. For
 * example, the string "24-Jan-17" may be in the year 1817, 1917, 2017, or
 * some other year. SimpleDateFormat chooses a year so that the resultant
 * date is on or after the two digit start date and within 100 years of the
 * two digit start date.
 * 
 * By default, the two digit start date is set to 80 years before the current
 * time at which a SimpleDateFormat object is created.
 * @param status Filled in with U_ZERO_ERROR if the parse was successful, and with
 * an error value if there was a parse error.
 * @stable ICU 2.0
 */
 UDate get2DigitYearStart(UErrorCode& status) const;

/**
     * Return a pattern string describing this date format.
     * @param result Output param to receive the pattern.
     * @return       A reference to 'result'.
     * @stable ICU 2.0
     */
    virtual UnicodeString& toPattern(UnicodeString& result) const;

/**
     * Return a localized pattern string describing this date format.
     * In most cases, this will return the same thing as toPattern(),
     * but a locale can specify characters to use in pattern descriptions
     * in place of the ones described in this class's class documentation.
     * (Presumably, letters that would be more mnemonic in that locale's
     * language.)  This function would produce a pattern using those
     * letters.
     *
     * @param result    Receives the localized pattern.
     * @param status    Output param set to success/failure code on
     *                  exit. If the pattern is invalid, this will be
     *                  set to a failure result.
     * @return          A reference to 'result'.
     * @stable ICU 2.0
     */
    virtual UnicodeString& toLocalizedPattern(UnicodeString& result,
                                              UErrorCode& status) const;

/**
     * Apply the given unlocalized pattern string to this date format.
     * (i.e., after this call, this formatter will format dates according to
     * the new pattern)
     *
     * @param pattern   The pattern to be applied.
     * @stable ICU 2.0
     */
    virtual void applyPattern(const UnicodeString& pattern);

/**
     * Apply the given localized pattern string to this date format.
     * (see toLocalizedPattern() for more information on localized patterns.)
     *
     * @param pattern   The localized pattern to be applied.
     * @param status    Output param set to success/failure code on
     *                  exit. If the pattern is invalid, this will be
     *                  set to a failure result.
     * @stable ICU 2.0
     */
    virtual void applyLocalizedPattern(const UnicodeString& pattern,
                                       UErrorCode& status);

/**
     * Gets the date/time formatting symbols (this is an object carrying
     * the various strings and other symbols used in formatting: e.g., month
     * names and abbreviations, time zone names, AM/PM strings, etc.)
     * @return a copy of the date-time formatting data associated
     * with this date-time formatter.
     * @stable ICU 2.0
     */
    virtual const DateFormatSymbols* getDateFormatSymbols(void) const;

/**
     * Set the date/time formatting symbols.  The caller no longer owns the
     * DateFormatSymbols object and should not delete it after making this call.
     * @param newFormatSymbols the given date-time formatting symbols to copy.
     * @stable ICU 2.0
     */
    virtual void adoptDateFormatSymbols(DateFormatSymbols* newFormatSymbols);

/**
     * Set the date/time formatting data.
     * @param newFormatSymbols the given date-time formatting symbols to copy.
     * @stable ICU 2.0
     */
    virtual void setDateFormatSymbols(const DateFormatSymbols& newFormatSymbols);

/**
 * Return the class ID for this class. This is useful only for comparing to
 * a return value from getDynamicClassID(). For example:
 * <pre>
 * . Base* polymorphic_pointer = createPolymorphicObject();
 * . if (polymorphic_pointer->getDynamicClassID() ==
 * . erived::getStaticClassID()) ...
 * </pre>
 * @return The class ID for all objects of this class.
 * @stable ICU 2.0
 */
 static UClassID U_EXPORT2 getStaticClassID(void);

/**
     * 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.
     * @stable ICU 2.0
     */
    virtual UClassID getDynamicClassID(void) const;

/**
     * Set the calendar to be used by this date format. Initially, the default
     * calendar for the specified or default locale is used.  The caller should
     * not delete the Calendar object after it is adopted by this call.
     * Adopting a new calendar will change to the default symbols.
     *
     * @param calendarToAdopt    Calendar object to be adopted.
     * @stable ICU 2.0
     */
    virtual void adoptCalendar(Calendar* calendarToAdopt);

/**
     * This is for ICU internal use only. Please do not use.
     * Check whether the 'field' is smaller than all the fields covered in
     * pattern, return TRUE if it is. The sequence of calendar field, 
     * from large to small is: ERA, YEAR, MONTH, DATE, AM_PM, HOUR, MINUTE,...
     * @param field    the calendar field need to check against
     * @return         TRUE if the 'field' is smaller than all the fields 
     *                 covered in pattern. FALSE otherwise.
     * @internal ICU 4.0
     */
    UBool isFieldUnitIgnored(UCalendarDateFields field) const;

/**
     * This is for ICU internal use only. Please do not use.
     * Check whether the 'field' is smaller than all the fields covered in
     * pattern, return TRUE if it is. The sequence of calendar field, 
     * from large to small is: ERA, YEAR, MONTH, DATE, AM_PM, HOUR, MINUTE,...
     * @param pattern  the pattern to check against
     * @param field    the calendar field need to check against
     * @return         TRUE if the 'field' is smaller than all the fields 
     *                 covered in pattern. FALSE otherwise.
     * @internal ICU 4.0
     */
    static UBool isFieldUnitIgnored(const UnicodeString& pattern, 
                                    UCalendarDateFields field);

/**
     * This is for ICU internal use only. Please do not use.
     * Get the locale of this simple date formatter.
     * It is used in DateIntervalFormat.
     *
     * @return   locale in this simple date formatter
     * @internal ICU 4.0
     */
    const Locale& getSmpFmtLocale(void) const;

private:
    friend class DateFormat;

void initializeDefaultCentury(void);

SimpleDateFormat(); // default constructor not implemented

/**
     * Used by the DateFormat factory methods to construct a SimpleDateFormat.
     * @param timeStyle the time style.
     * @param dateStyle the date style.
     * @param locale    the given locale.
     * @param status    Output param set to success/failure code on
     *                  exit.
     */
    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.
     * @param locale    the given locale.
     * @param status    Output param set to success/failure code on
     *                  exit.
     */
    SimpleDateFormat(const Locale& locale, UErrorCode& status); // Use default pattern

/**
     * Called by format() to format a single field.
     *
     * @param appendTo  Output parameter to receive result.
     *                  Result is appended to existing contents.
     * @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 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 with the beginning and ending offsets of the
     *                  field.
     * @param status    Receives a status code, which will be U_ZERO_ERROR if the operation
     *                  succeeds.
     */
    void subFormat(             UnicodeString &appendTo,
                                UChar ch,
                                int32_t count,
                                FieldPosition& pos,
                                Calendar& cal,
                                UErrorCode& status) const; // in case of illegal argument

/**
     * Used by subFormat() to format a numeric value.
     * Appends to toAppendTo a string representation of "value"
     * having a number of digits between "minDigits" and
     * "maxDigits".  Uses the DateFormat's NumberFormat.
     *
     * @param appendTo  Output parameter to receive result.
     *                  Formatted number is appended to existing contents.
     * @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
     */
    void zeroPaddingNumber(          NumberFormat *currentNumberFormat,
                                     UnicodeString &appendTo,
                                     int32_t value,
                                     int32_t minDigits,
                                     int32_t maxDigits) const;

/**
     * Return true if the given format character, occuring count
     * times, represents a numeric field.
     */
    static UBool isNumeric(UChar formatChar, int32_t count);

/**
     * initializes fCalendar from parameters.  Returns fCalendar as a convenience.
     * @param adoptZone  Zone to be adopted, or NULL for TimeZone::createDefault().
     * @param locale Locale of the calendar
     * @param status Error code
     * @return the newly constructed fCalendar
     */
    Calendar *initializeCalendar(TimeZone* adoptZone, const Locale& locale, UErrorCode& status);

/**
     * initializes fSymbols from parameters.
     * @param locale Locale of the symbols
     * @param calendar Alias to Calendar that will be used.
     * @param status Error code
     */
    void initializeSymbols(const Locale& locale, Calendar* calendar, UErrorCode& status);

/**
     * 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 stringArray the string array to parsed.
     * @param stringArrayCount the size of the array.
     * @param cal a Calendar set to the date and time to be formatted
     *            into a date/time string.
     * @return the new start position if matching succeeded; a negative number
     * indicating matching failure, otherwise.
     */
    int32_t matchString(const UnicodeString& text, int32_t start, UCalendarDateFields field,
                        const UnicodeString* stringArray, int32_t stringArrayCount, Calendar& cal) const;

/**
     * 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 stringArray the string array to parsed.
     * @param stringArrayCount the size of the array.
     * @param cal a Calendar set to the date and time to be formatted
     *            into a date/time string.
     * @return the new start position if matching succeeded; a negative number
     * indicating matching failure, otherwise.
     */
    int32_t matchQuarterString(const UnicodeString& text, int32_t start, UCalendarDateFields field,
                               const UnicodeString* stringArray, int32_t stringArrayCount, Calendar& cal) 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.
     * @param ambiguousYear If true then the two-digit year == the default start year.
     * @param cal a Calendar set to the date and time to be formatted
     *            into a date/time string.
     * @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,
                     UBool obeyCount, UBool allowNegative, UBool ambiguousYear[], Calendar& cal,
                     int32_t patLoc) const;

void parseInt(const UnicodeString& text,
                  Formattable& number,
                  ParsePosition& pos,
                  UBool allowNegative,
                  NumberFormat *fmt) const;

void parseInt(const UnicodeString& text,
                  Formattable& number,
                  int32_t maxDigits,
                  ParsePosition& pos,
                  UBool allowNegative,
                  NumberFormat *fmt) const;

int32_t checkIntSuffix(const UnicodeString& text, int32_t start,
                           int32_t patLoc, UBool isNegative) 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.
     * @param originalPattern   the original pattern.
     * @param translatedPattern Output param to receive the translited pattern.
     * @param from              the characters to be translited from.
     * @param to                the characters to be translited to.
     * @param status            Receives a status code, which will be U_ZERO_ERROR
     *                          if the operation succeeds.
     */
    static void translatePattern(const UnicodeString& originalPattern,
                                UnicodeString& translatedPattern,
                                const UnicodeString& from,
                                const UnicodeString& to,
                                UErrorCode& status);

/**
     * Sets the starting date of the 100-year window that dates with 2-digit years
     * are considered to fall within.
     * @param startDate the start date
     * @param status    Receives a status code, which will be U_ZERO_ERROR
     *                  if the operation succeeds.
     */
    void         parseAmbiguousDatesAsAfter(UDate startDate, UErrorCode& status);

/**
     * Return the length matched by the given affix, or -1 if none.
     * Runs of white space in the affix, match runs of white space in
     * the input.
     * @param affix pattern string, taken as a literal
     * @param input input text
     * @param pos offset into input at which to begin matching
     * @return length of input that matches, or -1 if match failure
     */
    int32_t compareSimpleAffix(const UnicodeString& affix, 
                   const UnicodeString& input, 
                   int32_t pos) const;

/**
     * Skip over a run of zero or more isRuleWhiteSpace() characters at
     * pos in text.
     */
    int32_t skipRuleWhiteSpace(const UnicodeString& text, int32_t pos) const;

/**
     * Skip over a run of zero or more isUWhiteSpace() characters at pos
     * in text.
     */
    int32_t skipUWhiteSpace(const UnicodeString& text, int32_t pos) const;

/**
     * Private methods for formatting/parsing GMT string
     */
    void appendGMT(NumberFormat *currentNumberFormat,UnicodeString &appendTo, Calendar& cal, UErrorCode& status) const;
    void formatGMTDefault(NumberFormat *currentNumberFormat,UnicodeString &appendTo, int32_t offset) const;
    int32_t parseGMT(const UnicodeString &text, ParsePosition &pos) const;
    int32_t parseGMTDefault(const UnicodeString &text, ParsePosition &pos) const;
    UBool isDefaultGMTFormat() const;

void formatRFC822TZ(UnicodeString &appendTo, int32_t offset) const;

/**
     * Initialize MessageFormat instances used for GMT formatting/parsing
     */
    void initGMTFormatters(UErrorCode &status);

/**
     * Initialize NumberFormat instances used for numbering system overrides.
     */
    void initNumberFormatters(const Locale &locale,UErrorCode &status);

/**
     * Get the numbering system to be used for a particular field.
     */
    using DateFormat::getNumberFormat;    // Do not hide visibility of base class function
    NumberFormat * getNumberFormat(UDateFormatField index) const;

/**
     * Parse the given override string and set up structures for number formats
     */
    void processOverrideString(const Locale &locale, const UnicodeString &str, int8_t type, UErrorCode &status);

/**
     * Used to map pattern characters to Calendar field identifiers.
     */
    static const UCalendarDateFields fgPatternIndexToCalendarField[];

/**
     * Map index into pattern character string to DateFormat field number
     */
    static const UDateFormatField fgPatternIndexToDateFormatField[];

/**
     * Used to map Calendar field to field level.
     * The larger the level, the smaller the field unit.
     * For example, UCAL_ERA level is 0, UCAL_YEAR level is 10,
     * UCAL_MONTH level is 20.
     */
    static const int32_t fgCalendarFieldToLevel[];
    static const int32_t fgPatternCharToLevel[];

/**
     * The formatting pattern for this formatter.
     */
    UnicodeString       fPattern;

/**
     * The numbering system override for dates.
     */
    UnicodeString       fDateOverride;

/**
     * The numbering system override for times.
     */
    UnicodeString       fTimeOverride;

/**
     * The original locale used (for reloading symbols)
     */
    Locale              fLocale;

/**
     * 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;

enum ParsedTZType {
        TZTYPE_UNK,
        TZTYPE_STD,
        TZTYPE_DST
    };

ParsedTZType tztype; // here to avoid api change

typedef struct NSOverride {
        NumberFormat *nf;
        int32_t hash;
        NSOverride *next;
    } NSOverride;

/*
     * MessageFormat instances used for localized GMT format
     */
    enum {
        kGMTNegativeHMS = 0,
        kGMTNegativeHM,
        kGMTPositiveHMS,
        kGMTPositiveHM,

kNumGMTFormatters
    };
    enum {
        kGMTNegativeHMSMinLenIdx = 0,
        kGMTPositiveHMSMinLenIdx,

kNumGMTFormatMinLengths
    };

MessageFormat   **fGMTFormatters;
    // If a GMT hour format has a second field, we need to make sure
    // the length of input localized GMT string must match the expected
    // length.  Otherwise, sub DateForamt handling offset format may
    // unexpectedly success parsing input GMT string without second field.
    // See #6880 about this issue.
    // TODO: SimpleDateFormat should provide an option to invalidate
    // 
    int32_t         fGMTFormatHmsMinLen[kNumGMTFormatMinLengths];

NumberFormat    **fNumberFormatters;

NSOverride      *fOverrideList;
    
    UBool fHaveDefaultCentury;
};

inline UDate
SimpleDateFormat::get2DigitYearStart(UErrorCode& /*status*/) const
{
    return fDefaultCenturyStart;
}

inline UnicodeString&
SimpleDateFormat::format(const Formattable& obj,
                         UnicodeString& appendTo,
                         UErrorCode& status) const {
    // Don't use Format:: - use immediate base class only,
    // in case immediate base modifies behavior later.
    return DateFormat::format(obj, appendTo, status);
}

inline UnicodeString&
SimpleDateFormat::format(UDate date,
                         UnicodeString& appendTo,
                         FieldPosition& fieldPosition) const {
    // Don't use Format:: - use immediate base class only,
    // in case immediate base modifies behavior later.
    return DateFormat::format(date, appendTo, fieldPosition);
}

inline UnicodeString&
SimpleDateFormat::format(UDate date, UnicodeString& appendTo) const {
    return DateFormat::format(date, appendTo);
}

U_NAMESPACE_END

#endif /* #if !UCONFIG_NO_FORMATTING */

#endif // _SMPDTFMT
//eof

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