jpayne@69: // © 2016 and later: Unicode, Inc. and others. jpayne@69: // License & terms of use: http://www.unicode.org/copyright.html jpayne@69: /* jpayne@69: * Copyright (C) 1997-2016, International Business Machines Corporation and jpayne@69: * others. All Rights Reserved. jpayne@69: ******************************************************************************* jpayne@69: * jpayne@69: * File SMPDTFMT.H jpayne@69: * jpayne@69: * Modification History: jpayne@69: * jpayne@69: * Date Name Description jpayne@69: * 02/19/97 aliu Converted from java. jpayne@69: * 07/09/97 helena Make ParsePosition into a class. jpayne@69: * 07/21/98 stephen Added GMT_PLUS, GMT_MINUS jpayne@69: * Changed setTwoDigitStartDate to set2DigitYearStart jpayne@69: * Changed getTwoDigitStartDate to get2DigitYearStart jpayne@69: * Removed subParseLong jpayne@69: * Removed getZoneIndex (added in DateFormatSymbols) jpayne@69: * 06/14/99 stephen Removed fgTimeZoneDataSuffix jpayne@69: * 10/14/99 aliu Updated class doc to describe 2-digit year parsing jpayne@69: * {j28 4182066}. jpayne@69: ******************************************************************************* jpayne@69: */ jpayne@69: jpayne@69: #ifndef SMPDTFMT_H jpayne@69: #define SMPDTFMT_H jpayne@69: jpayne@69: #include "unicode/utypes.h" jpayne@69: jpayne@69: #if U_SHOW_CPLUSPLUS_API jpayne@69: jpayne@69: /** jpayne@69: * \file jpayne@69: * \brief C++ API: Format and parse dates in a language-independent manner. jpayne@69: */ jpayne@69: jpayne@69: #if !UCONFIG_NO_FORMATTING jpayne@69: jpayne@69: #include "unicode/datefmt.h" jpayne@69: #include "unicode/udisplaycontext.h" jpayne@69: #include "unicode/tzfmt.h" /* for UTimeZoneFormatTimeType */ jpayne@69: #include "unicode/brkiter.h" jpayne@69: jpayne@69: U_NAMESPACE_BEGIN jpayne@69: jpayne@69: class DateFormatSymbols; jpayne@69: class DateFormat; jpayne@69: class MessageFormat; jpayne@69: class FieldPositionHandler; jpayne@69: class TimeZoneFormat; jpayne@69: class SharedNumberFormat; jpayne@69: class SimpleDateFormatMutableNFs; jpayne@69: class DateIntervalFormat; jpayne@69: jpayne@69: namespace number { jpayne@69: class LocalizedNumberFormatter; jpayne@69: } jpayne@69: jpayne@69: /** jpayne@69: * jpayne@69: * SimpleDateFormat is a concrete class for formatting and parsing dates in a jpayne@69: * language-independent manner. It allows for formatting (millis -> text), jpayne@69: * parsing (text -> millis), and normalization. Formats/Parses a date or time, jpayne@69: * which is the standard milliseconds since 24:00 GMT, Jan 1, 1970. jpayne@69: *

jpayne@69: * Clients are encouraged to create a date-time formatter using DateFormat::getInstance(), jpayne@69: * getDateInstance(), getDateInstance(), or getDateTimeInstance() rather than jpayne@69: * explicitly constructing an instance of SimpleDateFormat. This way, the client jpayne@69: * is guaranteed to get an appropriate formatting pattern for whatever locale the jpayne@69: * program is running in. However, if the client needs something more unusual than jpayne@69: * the default patterns in the locales, he can construct a SimpleDateFormat directly jpayne@69: * and give it an appropriate pattern (or use one of the factory methods on DateFormat jpayne@69: * and modify the pattern after the fact with toPattern() and applyPattern(). jpayne@69: * jpayne@69: *

Date and Time Patterns:

jpayne@69: * jpayne@69: *

Date and time formats are specified by date and time pattern strings. jpayne@69: * Within date and time pattern strings, all unquoted ASCII letters [A-Za-z] are reserved jpayne@69: * as pattern letters representing calendar fields. SimpleDateFormat supports jpayne@69: * the date and time formatting algorithm and pattern letters defined by jpayne@69: * UTS#35 jpayne@69: * Unicode Locale Data Markup Language (LDML) and further documented for ICU in the jpayne@69: * ICU jpayne@69: * User Guide. The following pattern letters are currently available (note that the actual jpayne@69: * values depend on CLDR and may change from the examples shown here):

jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * 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jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: *
FieldSym.No.ExampleDescription
eraG1..3ADEra - Replaced with the Era string for the current date. One to three letters for the jpayne@69: * abbreviated form, four letters for the long (wide) form, five for the narrow form.
4Anno Domini
5A
yeary1..n1996Year. Normally the length specifies the padding, but for two letters it also specifies the maximum jpayne@69: * length. Example:
jpayne@69: *
jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: * jpayne@69: *
Yearyyyyyyyyyyyyyyy
AD 1101001000100001
AD 121212012001200012
AD 12312323123012300123
AD 12341234341234123401234
AD 123451234545123451234512345
jpayne@69: *
jpayne@69: *
Y1..n1997Year (in "Week of Year" based calendars). Normally the length specifies the padding, jpayne@69: * but for two letters it also specifies the maximum length. This year designation is used in ISO jpayne@69: * year-week calendar as defined by ISO 8601, but can be used in non-Gregorian based calendar systems jpayne@69: * where week date processing is desired. May not always be the same value as calendar year.
u1..n4601Extended year. This is a single number designating the year of this calendar system, encompassing jpayne@69: * all supra-year fields. For example, for the Julian calendar system, year numbers are positive, with an jpayne@69: * era of BCE or CE. An extended year value for the Julian calendar system assigns positive values to CE jpayne@69: * years and negative values to BCE years, with 1 BCE being year 0.
U1..3甲子Cyclic year name. Calendars such as the Chinese lunar calendar (and related calendars) jpayne@69: * and the Hindu calendars use 60-year cycles of year names. Use one through three letters for the abbreviated jpayne@69: * name, four for the full (wide) name, or five for the narrow name (currently the data only provides abbreviated names, jpayne@69: * which will be used for all requested name widths). If the calendar does not provide cyclic year name data, jpayne@69: * or if the year value to be formatted is out of the range of years for which cyclic name data is provided, jpayne@69: * then numeric formatting is used (behaves like 'y').
4(currently also 甲子)
5(currently also 甲子)
quarterQ1..202Quarter - Use one or two for the numerical quarter, three for the abbreviation, or four for the jpayne@69: * full (wide) name (five for the narrow name is not yet supported).
3Q2
42nd quarter
q1..202Stand-Alone Quarter - Use one or two for the numerical quarter, three for the abbreviation, jpayne@69: * or four for the full name (five for the narrow name is not yet supported).
3Q2
42nd quarter
monthM1..209Month - Use one or two for the numerical month, three for the abbreviation, four for jpayne@69: * the full (wide) name, or five for the narrow name. With two ("MM"), the month number is zero-padded jpayne@69: * if necessary (e.g. "08")
3Sep
4September
5S
L1..209Stand-Alone Month - Use one or two for the numerical month, three for the abbreviation, jpayne@69: * four for the full (wide) name, or 5 for the narrow name. With two ("LL"), the month number is zero-padded if jpayne@69: * necessary (e.g. "08")
3Sep
4September
5S
weekw1..227Week of Year. Use "w" to show the minimum number of digits, or "ww" to always show two digits jpayne@69: * (zero-padding if necessary, e.g. "08").
W13Week of Month
dayd1..21Date - Day of the month. Use "d" to show the minimum number of digits, or "dd" to always show jpayne@69: * two digits (zero-padding if necessary, e.g. "08").
D1..3345Day of year
F12Day of Week in Month. The example is for the 2nd Wed in July
g1..n2451334Modified Julian day. This is different from the conventional Julian day number in two regards. jpayne@69: * First, it demarcates days at local zone midnight, rather than noon GMT. Second, it is a local number; jpayne@69: * that is, it depends on the local time zone. It can be thought of as a single number that encompasses jpayne@69: * all the date-related fields.
week
jpayne@69: * day		E1..3TueDay of week - Use one through three letters for the short day, four for the full (wide) name, jpayne@69: * five for the narrow name, or six for the short name.
4Tuesday
5T
6Tu
e1..22Local day of week. Same as E except adds a numeric value that will depend on the local jpayne@69: * starting day of the week, using one or two letters. For this example, Monday is the first day of the week.
3Tue
4Tuesday
5T
6Tu
c12Stand-Alone local day of week - Use one letter for the local numeric value (same jpayne@69: * as 'e'), three for the short day, four for the full (wide) name, five for the narrow name, or six for jpayne@69: * the short name.
3Tue
4Tuesday
5T
6Tu
perioda1AMAM or PM
hourh1..211Hour [1-12]. When used in skeleton data or in a skeleton passed in an API for flexible data pattern jpayne@69: * generation, it should match the 12-hour-cycle format preferred by the locale (h or K); it should not match jpayne@69: * a 24-hour-cycle format (H or k). Use hh for zero padding.
H1..213Hour [0-23]. When used in skeleton data or in a skeleton passed in an API for flexible data pattern jpayne@69: * generation, it should match the 24-hour-cycle format preferred by the locale (H or k); it should not match a jpayne@69: * 12-hour-cycle format (h or K). Use HH for zero padding.
K1..20Hour [0-11]. When used in a skeleton, only matches K or h, see above. Use KK for zero padding.
k1..224Hour [1-24]. When used in a skeleton, only matches k or H, see above. Use kk for zero padding.
minutem1..259Minute. Use "m" to show the minimum number of digits, or "mm" to always show two digits jpayne@69: * (zero-padding if necessary, e.g. "08").
seconds1..212Second. Use "s" to show the minimum number of digits, or "ss" to always show two digits jpayne@69: * (zero-padding if necessary, e.g. "08").
S1..n3450Fractional Second - truncates (like other time fields) to the count of letters when formatting. jpayne@69: * Appends zeros if more than 3 letters specified. Truncates at three significant digits when parsing. jpayne@69: * (example shows display using pattern SSSS for seconds value 12.34567)
A1..n69540000Milliseconds in day. This field behaves exactly like a composite of all time-related fields, jpayne@69: * not including the zone fields. As such, it also reflects discontinuities of those fields on DST transition jpayne@69: * days. On a day of DST onset, it will jump forward. On a day of DST cessation, it will jump backward. This jpayne@69: * reflects the fact that is must be combined with the offset field to obtain a unique local time value.
zonez1..3PDTThe short specific non-location format. jpayne@69: * Where that is unavailable, falls back to the short localized GMT format ("O").
4Pacific Daylight TimeThe long specific non-location format. jpayne@69: * Where that is unavailable, falls back to the long localized GMT format ("OOOO").
Z1..3-0800The ISO8601 basic format with hours, minutes and optional seconds fields. jpayne@69: * The format is equivalent to RFC 822 zone format (when optional seconds field is absent). jpayne@69: * This is equivalent to the "xxxx" specifier.
4GMT-8:00The long localized GMT format. jpayne@69: * This is equivalent to the "OOOO" specifier.
5-08:00
jpayne@69: * -07:52:58		The ISO8601 extended format with hours, minutes and optional seconds fields. jpayne@69: * The ISO8601 UTC indicator "Z" is used when local time offset is 0. jpayne@69: * This is equivalent to the "XXXXX" specifier.
O1GMT-8The short localized GMT format.
4GMT-08:00The long localized GMT format.
v1PTThe short generic non-location format. jpayne@69: * Where that is unavailable, falls back to the generic location format ("VVVV"), jpayne@69: * then the short localized GMT format as the final fallback.
4Pacific TimeThe long generic non-location format. jpayne@69: * Where that is unavailable, falls back to generic location format ("VVVV"). jpayne@69: *
V1uslaxThe short time zone ID. jpayne@69: * Where that is unavailable, the special short time zone ID unk (Unknown Zone) is used.
jpayne@69: * Note: This specifier was originally used for a variant of the short specific non-location format, jpayne@69: * but it was deprecated in the later version of the LDML specification. In CLDR 23/ICU 51, the definition of jpayne@69: * the specifier was changed to designate a short time zone ID.
2America/Los_AngelesThe long time zone ID.
3Los AngelesThe exemplar city (location) for the time zone. jpayne@69: * Where that is unavailable, the localized exemplar city name for the special zone Etc/Unknown is used jpayne@69: * as the fallback (for example, "Unknown City").
4Los Angeles TimeThe generic location format. jpayne@69: * Where that is unavailable, falls back to the long localized GMT format ("OOOO"; jpayne@69: * Note: Fallback is only necessary with a GMT-style Time Zone ID, like Etc/GMT-830.)
jpayne@69: * This is especially useful when presenting possible timezone choices for user selection, jpayne@69: * since the naming is more uniform than the "v" format.
X1-08
jpayne@69: * +0530
jpayne@69: * Z		The ISO8601 basic format with hours field and optional minutes field. jpayne@69: * The ISO8601 UTC indicator "Z" is used when local time offset is 0.
2-0800
jpayne@69: * Z		The ISO8601 basic format with hours and minutes fields. jpayne@69: * The ISO8601 UTC indicator "Z" is used when local time offset is 0.
3-08:00
jpayne@69: * Z		The ISO8601 extended format with hours and minutes fields. jpayne@69: * The ISO8601 UTC indicator "Z" is used when local time offset is 0.
4-0800
jpayne@69: * -075258
jpayne@69: * Z		The ISO8601 basic format with hours, minutes and optional seconds fields. jpayne@69: * (Note: The seconds field is not supported by the ISO8601 specification.) jpayne@69: * The ISO8601 UTC indicator "Z" is used when local time offset is 0.
5-08:00
jpayne@69: * -07:52:58
jpayne@69: * Z		The ISO8601 extended format with hours, minutes and optional seconds fields. jpayne@69: * (Note: The seconds field is not supported by the ISO8601 specification.) jpayne@69: * The ISO8601 UTC indicator "Z" is used when local time offset is 0.
x1-08
jpayne@69: * +0530		The ISO8601 basic format with hours field and optional minutes field.
2-0800The ISO8601 basic format with hours and minutes fields.
3-08:00The ISO8601 extended format with hours and minutes fields.
4-0800
jpayne@69: * -075258		The ISO8601 basic format with hours, minutes and optional seconds fields. jpayne@69: * (Note: The seconds field is not supported by the ISO8601 specification.)
5-08:00
jpayne@69: * -07:52:58		The ISO8601 extended format with hours, minutes and optional seconds fields. jpayne@69: * (Note: The seconds field is not supported by the ISO8601 specification.)
jpayne@69: * jpayne@69: *

jpayne@69: * Any characters in the pattern that are not in the ranges of ['a'..'z'] and jpayne@69: * ['A'..'Z'] will be treated as quoted text. For instance, characters jpayne@69: * like ':', '.', ' ', '#' and '@' will appear in the resulting time text jpayne@69: * even they are not embraced within single quotes. jpayne@69: *

jpayne@69: * A pattern containing any invalid pattern letter will result in a failing jpayne@69: * UErrorCode result during formatting or parsing. jpayne@69: *

jpayne@69: * Examples using the US locale: jpayne@69: * 

jpayne@69:  * \code
jpayne@69:  *    Format Pattern                         Result
jpayne@69:  *    --------------                         -------
jpayne@69:  *    "yyyy.MM.dd G 'at' HH:mm:ss vvvv" ->>  1996.07.10 AD at 15:08:56 Pacific Time
jpayne@69:  *    "EEE, MMM d, ''yy"                ->>  Wed, July 10, '96
jpayne@69:  *    "h:mm a"                          ->>  12:08 PM
jpayne@69:  *    "hh 'o''clock' a, zzzz"           ->>  12 o'clock PM, Pacific Daylight Time
jpayne@69:  *    "K:mm a, vvv"                     ->>  0:00 PM, PT
jpayne@69:  *    "yyyyy.MMMMM.dd GGG hh:mm aaa"    ->>  1996.July.10 AD 12:08 PM
jpayne@69:  * \endcode
jpayne@69:  *
jpayne@69: * Code Sample: jpayne@69: * 
jpayne@69:  * \code
jpayne@69:  *     UErrorCode success = U_ZERO_ERROR;
jpayne@69:  *     SimpleTimeZone* pdt = new SimpleTimeZone(-8 * 60 * 60 * 1000, "PST");
jpayne@69:  *     pdt->setStartRule( Calendar::APRIL, 1, Calendar::SUNDAY, 2*60*60*1000);
jpayne@69:  *     pdt->setEndRule( Calendar::OCTOBER, -1, Calendar::SUNDAY, 2*60*60*1000);
jpayne@69:  *
jpayne@69:  *     // Format the current time.
jpayne@69:  *     SimpleDateFormat* formatter
jpayne@69:  *         = new SimpleDateFormat ("yyyy.MM.dd G 'at' hh:mm:ss a zzz", success );
jpayne@69:  *     GregorianCalendar cal(success);
jpayne@69:  *     UDate currentTime_1 = cal.getTime(success);
jpayne@69:  *     FieldPosition fp(FieldPosition::DONT_CARE);
jpayne@69:  *     UnicodeString dateString;
jpayne@69:  *     formatter->format( currentTime_1, dateString, fp );
jpayne@69:  *     cout << "result: " << dateString << endl;
jpayne@69:  *
jpayne@69:  *     // Parse the previous string back into a Date.
jpayne@69:  *     ParsePosition pp(0);
jpayne@69:  *     UDate currentTime_2 = formatter->parse(dateString, pp );
jpayne@69:  * \endcode
jpayne@69:  *
jpayne@69: * In the above example, the time value "currentTime_2" obtained from parsing jpayne@69: * will be equal to currentTime_1. However, they may not be equal if the am/pm jpayne@69: * marker 'a' is left out from the format pattern while the "hour in am/pm" jpayne@69: * pattern symbol is used. This information loss can happen when formatting the jpayne@69: * time in PM. jpayne@69: * jpayne@69: *

jpayne@69: * When parsing a date string using the abbreviated year pattern ("y" or "yy"), jpayne@69: * SimpleDateFormat must interpret the abbreviated year jpayne@69: * relative to some century. It does this by adjusting dates to be jpayne@69: * within 80 years before and 20 years after the time the SimpleDateFormat jpayne@69: * instance is created. For example, using a pattern of "MM/dd/yy" and a jpayne@69: * SimpleDateFormat instance created on Jan 1, 1997, the string jpayne@69: * "01/11/12" would be interpreted as Jan 11, 2012 while the string "05/04/64" jpayne@69: * would be interpreted as May 4, 1964. jpayne@69: * During parsing, only strings consisting of exactly two digits, as defined by jpayne@69: * Unicode::isDigit(), will be parsed into the default century. jpayne@69: * Any other numeric string, such as a one digit string, a three or more digit jpayne@69: * string, or a two digit string that isn't all digits (for example, "-1"), is jpayne@69: * interpreted literally. So "01/02/3" or "01/02/003" are parsed (for the jpayne@69: * Gregorian calendar), using the same pattern, as Jan 2, 3 AD. Likewise (but jpayne@69: * only in lenient parse mode, the default) "01/02/-3" is parsed as Jan 2, 4 BC. jpayne@69: * jpayne@69: *

jpayne@69: * If the year pattern has more than two 'y' characters, the year is jpayne@69: * interpreted literally, regardless of the number of digits. So using the jpayne@69: * pattern "MM/dd/yyyy", "01/11/12" parses to Jan 11, 12 A.D. jpayne@69: * jpayne@69: *

jpayne@69: * When numeric fields abut one another directly, with no intervening delimiter jpayne@69: * characters, they constitute a run of abutting numeric fields. Such runs are jpayne@69: * parsed specially. For example, the format "HHmmss" parses the input text jpayne@69: * "123456" to 12:34:56, parses the input text "12345" to 1:23:45, and fails to jpayne@69: * parse "1234". In other words, the leftmost field of the run is flexible, jpayne@69: * while the others keep a fixed width. If the parse fails anywhere in the run, jpayne@69: * then the leftmost field is shortened by one character, and the entire run is jpayne@69: * parsed again. This is repeated until either the parse succeeds or the jpayne@69: * leftmost field is one character in length. If the parse still fails at that jpayne@69: * point, the parse of the run fails. jpayne@69: * jpayne@69: *

jpayne@69: * For time zones that have no names, SimpleDateFormat uses strings GMT+hours:minutes or jpayne@69: * GMT-hours:minutes. jpayne@69: *

jpayne@69: * The calendar defines what is the first day of the week, the first week of the jpayne@69: * year, whether hours are zero based or not (0 vs 12 or 24), and the timezone. jpayne@69: * There is one common number format to handle all the numbers; the digit count jpayne@69: * is handled programmatically according to the pattern. jpayne@69: * jpayne@69: *

User subclasses are not supported. While clients may write jpayne@69: * subclasses, such code will not necessarily work and will not be jpayne@69: * guaranteed to work stably from release to release. jpayne@69: */ jpayne@69: class U_I18N_API SimpleDateFormat: public DateFormat { jpayne@69: public: jpayne@69: /** jpayne@69: * Construct a SimpleDateFormat using the default pattern for the default jpayne@69: * locale. jpayne@69: *

jpayne@69: * [Note:] Not all locales support SimpleDateFormat; for full generality, jpayne@69: * use the factory methods in the DateFormat class. jpayne@69: * @param status Output param set to success/failure code. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: SimpleDateFormat(UErrorCode& status); jpayne@69: jpayne@69: /** jpayne@69: * Construct a SimpleDateFormat using the given pattern and the default locale. jpayne@69: * The locale is used to obtain the symbols used in formatting (e.g., the jpayne@69: * names of the months), but not to provide the pattern. jpayne@69: *

jpayne@69: * [Note:] Not all locales support SimpleDateFormat; for full generality, jpayne@69: * use the factory methods in the DateFormat class. jpayne@69: * @param pattern the pattern for the format. jpayne@69: * @param status Output param set to success/failure code. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: SimpleDateFormat(const UnicodeString& pattern, jpayne@69: UErrorCode& status); jpayne@69: jpayne@69: /** jpayne@69: * Construct a SimpleDateFormat using the given pattern, numbering system override, and the default locale. jpayne@69: * The locale is used to obtain the symbols used in formatting (e.g., the jpayne@69: * names of the months), but not to provide the pattern. jpayne@69: *

jpayne@69: * A numbering system override is a string containing either the name of a known numbering system, jpayne@69: * or a set of field and numbering system pairs that specify which fields are to be formattied with jpayne@69: * the alternate numbering system. For example, to specify that all numeric fields in the specified jpayne@69: * date or time pattern are to be rendered using Thai digits, simply specify the numbering system override jpayne@69: * as "thai". To specify that just the year portion of the date be formatted using Hebrew numbering, jpayne@69: * use the override string "y=hebrew". Numbering system overrides can be combined using a semi-colon jpayne@69: * character in the override string, such as "d=decimal;M=arabic;y=hebrew", etc. jpayne@69: * jpayne@69: *

jpayne@69: * [Note:] Not all locales support SimpleDateFormat; for full generality, jpayne@69: * use the factory methods in the DateFormat class. jpayne@69: * @param pattern the pattern for the format. jpayne@69: * @param override the override string. jpayne@69: * @param status Output param set to success/failure code. jpayne@69: * @stable ICU 4.2 jpayne@69: */ jpayne@69: SimpleDateFormat(const UnicodeString& pattern, jpayne@69: const UnicodeString& override, jpayne@69: UErrorCode& status); jpayne@69: jpayne@69: /** jpayne@69: * Construct a SimpleDateFormat using the given pattern and locale. jpayne@69: * The locale is used to obtain the symbols used in formatting (e.g., the jpayne@69: * names of the months), but not to provide the pattern. jpayne@69: *

jpayne@69: * [Note:] Not all locales support SimpleDateFormat; for full generality, jpayne@69: * use the factory methods in the DateFormat class. jpayne@69: * @param pattern the pattern for the format. jpayne@69: * @param locale the given locale. jpayne@69: * @param status Output param set to success/failure code. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: SimpleDateFormat(const UnicodeString& pattern, jpayne@69: const Locale& locale, jpayne@69: UErrorCode& status); jpayne@69: jpayne@69: /** jpayne@69: * Construct a SimpleDateFormat using the given pattern, numbering system override, and locale. jpayne@69: * The locale is used to obtain the symbols used in formatting (e.g., the jpayne@69: * names of the months), but not to provide the pattern. jpayne@69: *

jpayne@69: * A numbering system override is a string containing either the name of a known numbering system, jpayne@69: * or a set of field and numbering system pairs that specify which fields are to be formattied with jpayne@69: * the alternate numbering system. For example, to specify that all numeric fields in the specified jpayne@69: * date or time pattern are to be rendered using Thai digits, simply specify the numbering system override jpayne@69: * as "thai". To specify that just the year portion of the date be formatted using Hebrew numbering, jpayne@69: * use the override string "y=hebrew". Numbering system overrides can be combined using a semi-colon jpayne@69: * character in the override string, such as "d=decimal;M=arabic;y=hebrew", etc. jpayne@69: *

jpayne@69: * [Note:] Not all locales support SimpleDateFormat; for full generality, jpayne@69: * use the factory methods in the DateFormat class. jpayne@69: * @param pattern the pattern for the format. jpayne@69: * @param override the numbering system override. jpayne@69: * @param locale the given locale. jpayne@69: * @param status Output param set to success/failure code. jpayne@69: * @stable ICU 4.2 jpayne@69: */ jpayne@69: SimpleDateFormat(const UnicodeString& pattern, jpayne@69: const UnicodeString& override, jpayne@69: const Locale& locale, jpayne@69: UErrorCode& status); jpayne@69: jpayne@69: /** jpayne@69: * Construct a SimpleDateFormat using the given pattern and locale-specific jpayne@69: * symbol data. The formatter takes ownership of the DateFormatSymbols object; jpayne@69: * the caller is no longer responsible for deleting it. jpayne@69: * @param pattern the given pattern for the format. jpayne@69: * @param formatDataToAdopt the symbols to be adopted. jpayne@69: * @param status Output param set to success/faulure code. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: SimpleDateFormat(const UnicodeString& pattern, jpayne@69: DateFormatSymbols* formatDataToAdopt, jpayne@69: UErrorCode& status); jpayne@69: jpayne@69: /** jpayne@69: * Construct a SimpleDateFormat using the given pattern and locale-specific jpayne@69: * symbol data. The DateFormatSymbols object is NOT adopted; the caller jpayne@69: * remains responsible for deleting it. jpayne@69: * @param pattern the given pattern for the format. jpayne@69: * @param formatData the formatting symbols to be use. jpayne@69: * @param status Output param set to success/faulure code. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: SimpleDateFormat(const UnicodeString& pattern, jpayne@69: const DateFormatSymbols& formatData, jpayne@69: UErrorCode& status); jpayne@69: jpayne@69: /** jpayne@69: * Copy constructor. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: SimpleDateFormat(const SimpleDateFormat&); jpayne@69: jpayne@69: /** jpayne@69: * Assignment operator. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: SimpleDateFormat& operator=(const SimpleDateFormat&); jpayne@69: jpayne@69: /** jpayne@69: * Destructor. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: virtual ~SimpleDateFormat(); jpayne@69: jpayne@69: /** jpayne@69: * Clone this Format object polymorphically. The caller owns the result and jpayne@69: * should delete it when done. jpayne@69: * @return A copy of the object. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: virtual SimpleDateFormat* clone() const; jpayne@69: jpayne@69: /** jpayne@69: * Return true if the given Format objects are semantically equal. Objects jpayne@69: * of different subclasses are considered unequal. jpayne@69: * @param other the object to be compared with. jpayne@69: * @return true if the given Format objects are semantically equal. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: virtual UBool operator==(const Format& other) const; jpayne@69: jpayne@69: jpayne@69: using DateFormat::format; jpayne@69: jpayne@69: /** jpayne@69: * Format a date or time, which is the standard millis since 24:00 GMT, Jan jpayne@69: * 1, 1970. Overrides DateFormat pure virtual method. jpayne@69: *

jpayne@69: * Example: using the US locale: "yyyy.MM.dd e 'at' HH:mm:ss zzz" ->> jpayne@69: * 1996.07.10 AD at 15:08:56 PDT jpayne@69: * jpayne@69: * @param cal Calendar set to the date and time to be formatted jpayne@69: * into a date/time string. jpayne@69: * @param appendTo Output parameter to receive result. jpayne@69: * Result is appended to existing contents. jpayne@69: * @param pos The formatting position. On input: an alignment field, jpayne@69: * if desired. On output: the offsets of the alignment field. jpayne@69: * @return Reference to 'appendTo' parameter. jpayne@69: * @stable ICU 2.1 jpayne@69: */ jpayne@69: virtual UnicodeString& format( Calendar& cal, jpayne@69: UnicodeString& appendTo, jpayne@69: FieldPosition& pos) const; jpayne@69: jpayne@69: /** jpayne@69: * Format a date or time, which is the standard millis since 24:00 GMT, Jan jpayne@69: * 1, 1970. Overrides DateFormat pure virtual method. jpayne@69: *

jpayne@69: * Example: using the US locale: "yyyy.MM.dd e 'at' HH:mm:ss zzz" ->> jpayne@69: * 1996.07.10 AD at 15:08:56 PDT jpayne@69: * jpayne@69: * @param cal Calendar set to the date and time to be formatted jpayne@69: * into a date/time string. jpayne@69: * @param appendTo Output parameter to receive result. jpayne@69: * Result is appended to existing contents. jpayne@69: * @param posIter On return, can be used to iterate over positions jpayne@69: * of fields generated by this format call. Field values jpayne@69: * are defined in UDateFormatField. jpayne@69: * @param status Input/output param set to success/failure code. jpayne@69: * @return Reference to 'appendTo' parameter. jpayne@69: * @stable ICU 4.4 jpayne@69: */ jpayne@69: virtual UnicodeString& format( Calendar& cal, jpayne@69: UnicodeString& appendTo, jpayne@69: FieldPositionIterator* posIter, jpayne@69: UErrorCode& status) const; jpayne@69: jpayne@69: using DateFormat::parse; jpayne@69: jpayne@69: /** jpayne@69: * Parse a date/time string beginning at the given parse position. For jpayne@69: * example, a time text "07/10/96 4:5 PM, PDT" will be parsed into a Date jpayne@69: * that is equivalent to Date(837039928046). jpayne@69: *

jpayne@69: * By default, parsing is lenient: If the input is not in the form used by jpayne@69: * this object's format method but can still be parsed as a date, then the jpayne@69: * parse succeeds. Clients may insist on strict adherence to the format by jpayne@69: * calling setLenient(false). jpayne@69: * @see DateFormat::setLenient(boolean) jpayne@69: * jpayne@69: * @param text The date/time string to be parsed jpayne@69: * @param cal A Calendar set on input to the date and time to be used for jpayne@69: * missing values in the date/time string being parsed, and set jpayne@69: * on output to the parsed date/time. When the calendar type is jpayne@69: * different from the internal calendar held by this SimpleDateFormat jpayne@69: * instance, the internal calendar will be cloned to a work jpayne@69: * calendar set to the same milliseconds and time zone as the jpayne@69: * cal parameter, field values will be parsed based on the work jpayne@69: * calendar, then the result (milliseconds and time zone) will jpayne@69: * be set in this calendar. jpayne@69: * @param pos On input, the position at which to start parsing; on jpayne@69: * output, the position at which parsing terminated, or the jpayne@69: * start position if the parse failed. jpayne@69: * @stable ICU 2.1 jpayne@69: */ jpayne@69: virtual void parse( const UnicodeString& text, jpayne@69: Calendar& cal, jpayne@69: ParsePosition& pos) const; jpayne@69: jpayne@69: jpayne@69: /** jpayne@69: * Set the start UDate used to interpret two-digit year strings. jpayne@69: * When dates are parsed having 2-digit year strings, they are placed within jpayne@69: * a assumed range of 100 years starting on the two digit start date. For jpayne@69: * example, the string "24-Jan-17" may be in the year 1817, 1917, 2017, or jpayne@69: * some other year. SimpleDateFormat chooses a year so that the resultant jpayne@69: * date is on or after the two digit start date and within 100 years of the jpayne@69: * two digit start date. jpayne@69: *

jpayne@69: * By default, the two digit start date is set to 80 years before the current jpayne@69: * time at which a SimpleDateFormat object is created. jpayne@69: * @param d start UDate used to interpret two-digit year strings. jpayne@69: * @param status Filled in with U_ZERO_ERROR if the parse was successful, and with jpayne@69: * an error value if there was a parse error. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: virtual void set2DigitYearStart(UDate d, UErrorCode& status); jpayne@69: jpayne@69: /** jpayne@69: * Get the start UDate used to interpret two-digit year strings. jpayne@69: * When dates are parsed having 2-digit year strings, they are placed within jpayne@69: * a assumed range of 100 years starting on the two digit start date. For jpayne@69: * example, the string "24-Jan-17" may be in the year 1817, 1917, 2017, or jpayne@69: * some other year. SimpleDateFormat chooses a year so that the resultant jpayne@69: * date is on or after the two digit start date and within 100 years of the jpayne@69: * two digit start date. jpayne@69: *

jpayne@69: * By default, the two digit start date is set to 80 years before the current jpayne@69: * time at which a SimpleDateFormat object is created. jpayne@69: * @param status Filled in with U_ZERO_ERROR if the parse was successful, and with jpayne@69: * an error value if there was a parse error. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: UDate get2DigitYearStart(UErrorCode& status) const; jpayne@69: jpayne@69: /** jpayne@69: * Return a pattern string describing this date format. jpayne@69: * @param result Output param to receive the pattern. jpayne@69: * @return A reference to 'result'. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: virtual UnicodeString& toPattern(UnicodeString& result) const; jpayne@69: jpayne@69: /** jpayne@69: * Return a localized pattern string describing this date format. jpayne@69: * In most cases, this will return the same thing as toPattern(), jpayne@69: * but a locale can specify characters to use in pattern descriptions jpayne@69: * in place of the ones described in this class's class documentation. jpayne@69: * (Presumably, letters that would be more mnemonic in that locale's jpayne@69: * language.) This function would produce a pattern using those jpayne@69: * letters. jpayne@69: *

jpayne@69: * Note: This implementation depends on DateFormatSymbols::getLocalPatternChars() jpayne@69: * to get localized format pattern characters. ICU does not include jpayne@69: * localized pattern character data, therefore, unless user sets localized jpayne@69: * pattern characters manually, this method returns the same result as jpayne@69: * toPattern(). jpayne@69: * jpayne@69: * @param result Receives the localized pattern. jpayne@69: * @param status Output param set to success/failure code on jpayne@69: * exit. If the pattern is invalid, this will be jpayne@69: * set to a failure result. jpayne@69: * @return A reference to 'result'. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: virtual UnicodeString& toLocalizedPattern(UnicodeString& result, jpayne@69: UErrorCode& status) const; jpayne@69: jpayne@69: /** jpayne@69: * Apply the given unlocalized pattern string to this date format. jpayne@69: * (i.e., after this call, this formatter will format dates according to jpayne@69: * the new pattern) jpayne@69: * jpayne@69: * @param pattern The pattern to be applied. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: virtual void applyPattern(const UnicodeString& pattern); jpayne@69: jpayne@69: /** jpayne@69: * Apply the given localized pattern string to this date format. jpayne@69: * (see toLocalizedPattern() for more information on localized patterns.) jpayne@69: * jpayne@69: * @param pattern The localized pattern to be applied. jpayne@69: * @param status Output param set to success/failure code on jpayne@69: * exit. If the pattern is invalid, this will be jpayne@69: * set to a failure result. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: virtual void applyLocalizedPattern(const UnicodeString& pattern, jpayne@69: UErrorCode& status); jpayne@69: jpayne@69: /** jpayne@69: * Gets the date/time formatting symbols (this is an object carrying jpayne@69: * the various strings and other symbols used in formatting: e.g., month jpayne@69: * names and abbreviations, time zone names, AM/PM strings, etc.) jpayne@69: * @return a copy of the date-time formatting data associated jpayne@69: * with this date-time formatter. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: virtual const DateFormatSymbols* getDateFormatSymbols(void) const; jpayne@69: jpayne@69: /** jpayne@69: * Set the date/time formatting symbols. The caller no longer owns the jpayne@69: * DateFormatSymbols object and should not delete it after making this call. jpayne@69: * @param newFormatSymbols the given date-time formatting symbols to copy. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: virtual void adoptDateFormatSymbols(DateFormatSymbols* newFormatSymbols); jpayne@69: jpayne@69: /** jpayne@69: * Set the date/time formatting data. jpayne@69: * @param newFormatSymbols the given date-time formatting symbols to copy. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: virtual void setDateFormatSymbols(const DateFormatSymbols& newFormatSymbols); jpayne@69: jpayne@69: /** jpayne@69: * Return the class ID for this class. This is useful only for comparing to jpayne@69: * a return value from getDynamicClassID(). For example: jpayne@69: * 

jpayne@69:      * .   Base* polymorphic_pointer = createPolymorphicObject();
jpayne@69:      * .   if (polymorphic_pointer->getDynamicClassID() ==
jpayne@69:      * .       erived::getStaticClassID()) ...
jpayne@69:      *
jpayne@69: * @return The class ID for all objects of this class. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: static UClassID U_EXPORT2 getStaticClassID(void); jpayne@69: jpayne@69: /** jpayne@69: * Returns a unique class ID POLYMORPHICALLY. Pure virtual override. This jpayne@69: * method is to implement a simple version of RTTI, since not all C++ jpayne@69: * compilers support genuine RTTI. Polymorphic operator==() and clone() jpayne@69: * methods call this method. jpayne@69: * jpayne@69: * @return The class ID for this object. All objects of a jpayne@69: * given class have the same class ID. Objects of jpayne@69: * other classes have different class IDs. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: virtual UClassID getDynamicClassID(void) const; jpayne@69: jpayne@69: /** jpayne@69: * Set the calendar to be used by this date format. Initially, the default jpayne@69: * calendar for the specified or default locale is used. The caller should jpayne@69: * not delete the Calendar object after it is adopted by this call. jpayne@69: * Adopting a new calendar will change to the default symbols. jpayne@69: * jpayne@69: * @param calendarToAdopt Calendar object to be adopted. jpayne@69: * @stable ICU 2.0 jpayne@69: */ jpayne@69: virtual void adoptCalendar(Calendar* calendarToAdopt); jpayne@69: jpayne@69: /* Cannot use #ifndef U_HIDE_INTERNAL_API for the following methods since they are virtual */ jpayne@69: /** jpayne@69: * Sets the TimeZoneFormat to be used by this date/time formatter. jpayne@69: * The caller should not delete the TimeZoneFormat object after jpayne@69: * it is adopted by this call. jpayne@69: * @param timeZoneFormatToAdopt The TimeZoneFormat object to be adopted. jpayne@69: * @internal ICU 49 technology preview jpayne@69: */ jpayne@69: virtual void adoptTimeZoneFormat(TimeZoneFormat* timeZoneFormatToAdopt); jpayne@69: jpayne@69: /** jpayne@69: * Sets the TimeZoneFormat to be used by this date/time formatter. jpayne@69: * @param newTimeZoneFormat The TimeZoneFormat object to copy. jpayne@69: * @internal ICU 49 technology preview jpayne@69: */ jpayne@69: virtual void setTimeZoneFormat(const TimeZoneFormat& newTimeZoneFormat); jpayne@69: jpayne@69: /** jpayne@69: * Gets the time zone format object associated with this date/time formatter. jpayne@69: * @return the time zone format associated with this date/time formatter. jpayne@69: * @internal ICU 49 technology preview jpayne@69: */ jpayne@69: virtual const TimeZoneFormat* getTimeZoneFormat(void) const; jpayne@69: jpayne@69: /** jpayne@69: * Set a particular UDisplayContext value in the formatter, such as jpayne@69: * UDISPCTX_CAPITALIZATION_FOR_STANDALONE. Note: For getContext, see jpayne@69: * DateFormat. jpayne@69: * @param value The UDisplayContext value to set. jpayne@69: * @param status Input/output status. If at entry this indicates a failure jpayne@69: * status, the function will do nothing; otherwise this will be jpayne@69: * updated with any new status from the function. jpayne@69: * @stable ICU 53 jpayne@69: */ jpayne@69: virtual void setContext(UDisplayContext value, UErrorCode& status); jpayne@69: jpayne@69: /** jpayne@69: * Overrides base class method and jpayne@69: * This method clears per field NumberFormat instances jpayne@69: * previously set by {@see adoptNumberFormat(const UnicodeString&, NumberFormat*, UErrorCode)} jpayne@69: * @param formatToAdopt the NumbeferFormat used jpayne@69: * @stable ICU 54 jpayne@69: */ jpayne@69: void adoptNumberFormat(NumberFormat *formatToAdopt); jpayne@69: jpayne@69: /** jpayne@69: * Allow the user to set the NumberFormat for several fields jpayne@69: * It can be a single field like: "y"(year) or "M"(month) jpayne@69: * It can be several field combined together: "yM"(year and month) jpayne@69: * Note: jpayne@69: * 1 symbol field is enough for multiple symbol field (so "y" will override "yy", "yyy") jpayne@69: * If the field is not numeric, then override has no effect (like "MMM" will use abbreviation, not numerical field) jpayne@69: * Per field NumberFormat can also be cleared in {@see DateFormat::setNumberFormat(const NumberFormat& newNumberFormat)} jpayne@69: * jpayne@69: * @param fields the fields to override(like y) jpayne@69: * @param formatToAdopt the NumbeferFormat used jpayne@69: * @param status Receives a status code, which will be U_ZERO_ERROR jpayne@69: * if the operation succeeds. jpayne@69: * @stable ICU 54 jpayne@69: */ jpayne@69: void adoptNumberFormat(const UnicodeString& fields, NumberFormat *formatToAdopt, UErrorCode &status); jpayne@69: jpayne@69: /** jpayne@69: * Get the numbering system to be used for a particular field. jpayne@69: * @param field The UDateFormatField to get jpayne@69: * @stable ICU 54 jpayne@69: */ jpayne@69: const NumberFormat * getNumberFormatForField(char16_t field) const; jpayne@69: jpayne@69: #ifndef U_HIDE_INTERNAL_API jpayne@69: /** jpayne@69: * This is for ICU internal use only. Please do not use. jpayne@69: * Check whether the 'field' is smaller than all the fields covered in jpayne@69: * pattern, return TRUE if it is. The sequence of calendar field, jpayne@69: * from large to small is: ERA, YEAR, MONTH, DATE, AM_PM, HOUR, MINUTE,... jpayne@69: * @param field the calendar field need to check against jpayne@69: * @return TRUE if the 'field' is smaller than all the fields jpayne@69: * covered in pattern. FALSE otherwise. jpayne@69: * @internal ICU 4.0 jpayne@69: */ jpayne@69: UBool isFieldUnitIgnored(UCalendarDateFields field) const; jpayne@69: jpayne@69: jpayne@69: /** jpayne@69: * This is for ICU internal use only. Please do not use. jpayne@69: * Check whether the 'field' is smaller than all the fields covered in jpayne@69: * pattern, return TRUE if it is. The sequence of calendar field, jpayne@69: * from large to small is: ERA, YEAR, MONTH, DATE, AM_PM, HOUR, MINUTE,... jpayne@69: * @param pattern the pattern to check against jpayne@69: * @param field the calendar field need to check against jpayne@69: * @return TRUE if the 'field' is smaller than all the fields jpayne@69: * covered in pattern. FALSE otherwise. jpayne@69: * @internal ICU 4.0 jpayne@69: */ jpayne@69: static UBool isFieldUnitIgnored(const UnicodeString& pattern, jpayne@69: UCalendarDateFields field); jpayne@69: jpayne@69: /** jpayne@69: * This is for ICU internal use only. Please do not use. jpayne@69: * Get the locale of this simple date formatter. jpayne@69: * It is used in DateIntervalFormat. jpayne@69: * jpayne@69: * @return locale in this simple date formatter jpayne@69: * @internal ICU 4.0 jpayne@69: */ jpayne@69: const Locale& getSmpFmtLocale(void) const; jpayne@69: #endif /* U_HIDE_INTERNAL_API */ jpayne@69: jpayne@69: private: jpayne@69: friend class DateFormat; jpayne@69: friend class DateIntervalFormat; jpayne@69: jpayne@69: void initializeDefaultCentury(void); jpayne@69: jpayne@69: void initializeBooleanAttributes(void); jpayne@69: jpayne@69: SimpleDateFormat(); // default constructor not implemented jpayne@69: jpayne@69: /** jpayne@69: * Used by the DateFormat factory methods to construct a SimpleDateFormat. jpayne@69: * @param timeStyle the time style. jpayne@69: * @param dateStyle the date style. jpayne@69: * @param locale the given locale. jpayne@69: * @param status Output param set to success/failure code on jpayne@69: * exit. jpayne@69: */ jpayne@69: SimpleDateFormat(EStyle timeStyle, EStyle dateStyle, const Locale& locale, UErrorCode& status); jpayne@69: jpayne@69: /** jpayne@69: * Construct a SimpleDateFormat for the given locale. If no resource data jpayne@69: * is available, create an object of last resort, using hard-coded strings. jpayne@69: * This is an internal method, called by DateFormat. It should never fail. jpayne@69: * @param locale the given locale. jpayne@69: * @param status Output param set to success/failure code on jpayne@69: * exit. jpayne@69: */ jpayne@69: SimpleDateFormat(const Locale& locale, UErrorCode& status); // Use default pattern jpayne@69: jpayne@69: /** jpayne@69: * Hook called by format(... FieldPosition& ...) and format(...FieldPositionIterator&...) jpayne@69: */ jpayne@69: UnicodeString& _format(Calendar& cal, UnicodeString& appendTo, FieldPositionHandler& handler, UErrorCode& status) const; jpayne@69: jpayne@69: /** jpayne@69: * Called by format() to format a single field. jpayne@69: * jpayne@69: * @param appendTo Output parameter to receive result. jpayne@69: * Result is appended to existing contents. jpayne@69: * @param ch The format character we encountered in the pattern. jpayne@69: * @param count Number of characters in the current pattern symbol (e.g., jpayne@69: * "yyyy" in the pattern would result in a call to this function jpayne@69: * with ch equal to 'y' and count equal to 4) jpayne@69: * @param capitalizationContext Capitalization context for this date format. jpayne@69: * @param fieldNum Zero-based numbering of current field within the overall format. jpayne@69: * @param handler Records information about field positions. jpayne@69: * @param cal Calendar to use jpayne@69: * @param status Receives a status code, which will be U_ZERO_ERROR if the operation jpayne@69: * succeeds. jpayne@69: */ jpayne@69: void subFormat(UnicodeString &appendTo, jpayne@69: char16_t ch, jpayne@69: int32_t count, jpayne@69: UDisplayContext capitalizationContext, jpayne@69: int32_t fieldNum, jpayne@69: char16_t fieldToOutput, jpayne@69: FieldPositionHandler& handler, jpayne@69: Calendar& cal, jpayne@69: UErrorCode& status) const; // in case of illegal argument jpayne@69: jpayne@69: /** jpayne@69: * Used by subFormat() to format a numeric value. jpayne@69: * Appends to toAppendTo a string representation of "value" jpayne@69: * having a number of digits between "minDigits" and jpayne@69: * "maxDigits". Uses the DateFormat's NumberFormat. jpayne@69: * jpayne@69: * @param currentNumberFormat jpayne@69: * @param appendTo Output parameter to receive result. jpayne@69: * Formatted number is appended to existing contents. jpayne@69: * @param value Value to format. jpayne@69: * @param minDigits Minimum number of digits the result should have jpayne@69: * @param maxDigits Maximum number of digits the result should have jpayne@69: */ jpayne@69: void zeroPaddingNumber(const NumberFormat *currentNumberFormat, jpayne@69: UnicodeString &appendTo, jpayne@69: int32_t value, jpayne@69: int32_t minDigits, jpayne@69: int32_t maxDigits) const; jpayne@69: jpayne@69: /** jpayne@69: * Return true if the given format character, occuring count jpayne@69: * times, represents a numeric field. jpayne@69: */ jpayne@69: static UBool isNumeric(char16_t formatChar, int32_t count); jpayne@69: jpayne@69: /** jpayne@69: * Returns TRUE if the patternOffset is at the start of a numeric field. jpayne@69: */ jpayne@69: static UBool isAtNumericField(const UnicodeString &pattern, int32_t patternOffset); jpayne@69: jpayne@69: /** jpayne@69: * Returns TRUE if the patternOffset is right after a non-numeric field. jpayne@69: */ jpayne@69: static UBool isAfterNonNumericField(const UnicodeString &pattern, int32_t patternOffset); jpayne@69: jpayne@69: /** jpayne@69: * initializes fCalendar from parameters. Returns fCalendar as a convenience. jpayne@69: * @param adoptZone Zone to be adopted, or NULL for TimeZone::createDefault(). jpayne@69: * @param locale Locale of the calendar jpayne@69: * @param status Error code jpayne@69: * @return the newly constructed fCalendar jpayne@69: */ jpayne@69: Calendar *initializeCalendar(TimeZone* adoptZone, const Locale& locale, UErrorCode& status); jpayne@69: jpayne@69: /** jpayne@69: * Called by several of the constructors to load pattern data and formatting symbols jpayne@69: * out of a resource bundle and initialize the locale based on it. jpayne@69: * @param timeStyle The time style, as passed to DateFormat::createDateInstance(). jpayne@69: * @param dateStyle The date style, as passed to DateFormat::createTimeInstance(). jpayne@69: * @param locale The locale to load the patterns from. jpayne@69: * @param status Filled in with an error code if loading the data from the jpayne@69: * resources fails. jpayne@69: */ jpayne@69: void construct(EStyle timeStyle, EStyle dateStyle, const Locale& locale, UErrorCode& status); jpayne@69: jpayne@69: /** jpayne@69: * Called by construct() and the various constructors to set up the SimpleDateFormat's jpayne@69: * Calendar and NumberFormat objects. jpayne@69: * @param locale The locale for which we want a Calendar and a NumberFormat. jpayne@69: * @param status Filled in with an error code if creating either subobject fails. jpayne@69: */ jpayne@69: void initialize(const Locale& locale, UErrorCode& status); jpayne@69: jpayne@69: /** jpayne@69: * Private code-size reduction function used by subParse. jpayne@69: * @param text the time text being parsed. jpayne@69: * @param start where to start parsing. jpayne@69: * @param field the date field being parsed. jpayne@69: * @param stringArray the string array to parsed. jpayne@69: * @param stringArrayCount the size of the array. jpayne@69: * @param monthPattern pointer to leap month pattern, or NULL if none. jpayne@69: * @param cal a Calendar set to the date and time to be formatted jpayne@69: * into a date/time string. jpayne@69: * @return the new start position if matching succeeded; a negative number jpayne@69: * indicating matching failure, otherwise. jpayne@69: */ jpayne@69: int32_t matchString(const UnicodeString& text, int32_t start, UCalendarDateFields field, jpayne@69: const UnicodeString* stringArray, int32_t stringArrayCount, jpayne@69: const UnicodeString* monthPattern, Calendar& cal) const; jpayne@69: jpayne@69: /** jpayne@69: * Private code-size reduction function used by subParse. jpayne@69: * @param text the time text being parsed. jpayne@69: * @param start where to start parsing. jpayne@69: * @param field the date field being parsed. jpayne@69: * @param stringArray the string array to parsed. jpayne@69: * @param stringArrayCount the size of the array. jpayne@69: * @param cal a Calendar set to the date and time to be formatted jpayne@69: * into a date/time string. jpayne@69: * @return the new start position if matching succeeded; a negative number jpayne@69: * indicating matching failure, otherwise. jpayne@69: */ jpayne@69: int32_t matchQuarterString(const UnicodeString& text, int32_t start, UCalendarDateFields field, jpayne@69: const UnicodeString* stringArray, int32_t stringArrayCount, Calendar& cal) const; jpayne@69: jpayne@69: /** jpayne@69: * Used by subParse() to match localized day period strings. jpayne@69: */ jpayne@69: int32_t matchDayPeriodStrings(const UnicodeString& text, int32_t start, jpayne@69: const UnicodeString* stringArray, int32_t stringArrayCount, jpayne@69: int32_t &dayPeriod) const; jpayne@69: jpayne@69: /** jpayne@69: * Private function used by subParse to match literal pattern text. jpayne@69: * jpayne@69: * @param pattern the pattern string jpayne@69: * @param patternOffset the starting offset into the pattern text. On jpayne@69: * outupt will be set the offset of the first non-literal character in the pattern jpayne@69: * @param text the text being parsed jpayne@69: * @param textOffset the starting offset into the text. On output jpayne@69: * will be set to the offset of the character after the match jpayne@69: * @param whitespaceLenient TRUE if whitespace parse is lenient, FALSE otherwise. jpayne@69: * @param partialMatchLenient TRUE if partial match parse is lenient, FALSE otherwise. jpayne@69: * @param oldLeniency TRUE if old leniency control is lenient, FALSE otherwise. jpayne@69: * jpayne@69: * @return TRUE if the literal text could be matched, FALSE otherwise. jpayne@69: */ jpayne@69: static UBool matchLiterals(const UnicodeString &pattern, int32_t &patternOffset, jpayne@69: const UnicodeString &text, int32_t &textOffset, jpayne@69: UBool whitespaceLenient, UBool partialMatchLenient, UBool oldLeniency); jpayne@69: jpayne@69: /** jpayne@69: * Private member function that converts the parsed date strings into jpayne@69: * timeFields. Returns -start (for ParsePosition) if failed. jpayne@69: * @param text the time text to be parsed. jpayne@69: * @param start where to start parsing. jpayne@69: * @param ch the pattern character for the date field text to be parsed. jpayne@69: * @param count the count of a pattern character. jpayne@69: * @param obeyCount if true then the count is strictly obeyed. jpayne@69: * @param allowNegative jpayne@69: * @param ambiguousYear If true then the two-digit year == the default start year. jpayne@69: * @param saveHebrewMonth Used to hang onto month until year is known. jpayne@69: * @param cal a Calendar set to the date and time to be formatted jpayne@69: * into a date/time string. jpayne@69: * @param patLoc jpayne@69: * @param numericLeapMonthFormatter If non-null, used to parse numeric leap months. jpayne@69: * @param tzTimeType the type of parsed time zone - standard, daylight or unknown (output). jpayne@69: * This parameter can be NULL if caller does not need the information. jpayne@69: * @return the new start position if matching succeeded; a negative number jpayne@69: * indicating matching failure, otherwise. jpayne@69: */ jpayne@69: int32_t subParse(const UnicodeString& text, int32_t& start, char16_t ch, int32_t count, jpayne@69: UBool obeyCount, UBool allowNegative, UBool ambiguousYear[], int32_t& saveHebrewMonth, Calendar& cal, jpayne@69: int32_t patLoc, MessageFormat * numericLeapMonthFormatter, UTimeZoneFormatTimeType *tzTimeType, jpayne@69: int32_t *dayPeriod=NULL) const; jpayne@69: jpayne@69: void parseInt(const UnicodeString& text, jpayne@69: Formattable& number, jpayne@69: ParsePosition& pos, jpayne@69: UBool allowNegative, jpayne@69: const NumberFormat *fmt) const; jpayne@69: jpayne@69: void parseInt(const UnicodeString& text, jpayne@69: Formattable& number, jpayne@69: int32_t maxDigits, jpayne@69: ParsePosition& pos, jpayne@69: UBool allowNegative, jpayne@69: const NumberFormat *fmt) const; jpayne@69: jpayne@69: int32_t checkIntSuffix(const UnicodeString& text, int32_t start, jpayne@69: int32_t patLoc, UBool isNegative) const; jpayne@69: jpayne@69: /** jpayne@69: * Counts number of digit code points in the specified text. jpayne@69: * jpayne@69: * @param text input text jpayne@69: * @param start start index, inclusive jpayne@69: * @param end end index, exclusive jpayne@69: * @return number of digits found in the text in the specified range. jpayne@69: */ jpayne@69: int32_t countDigits(const UnicodeString& text, int32_t start, int32_t end) const; jpayne@69: jpayne@69: /** jpayne@69: * Translate a pattern, mapping each character in the from string to the jpayne@69: * corresponding character in the to string. Return an error if the original jpayne@69: * pattern contains an unmapped character, or if a quote is unmatched. jpayne@69: * Quoted (single quotes only) material is not translated. jpayne@69: * @param originalPattern the original pattern. jpayne@69: * @param translatedPattern Output param to receive the translited pattern. jpayne@69: * @param from the characters to be translited from. jpayne@69: * @param to the characters to be translited to. jpayne@69: * @param status Receives a status code, which will be U_ZERO_ERROR jpayne@69: * if the operation succeeds. jpayne@69: */ jpayne@69: static void translatePattern(const UnicodeString& originalPattern, jpayne@69: UnicodeString& translatedPattern, jpayne@69: const UnicodeString& from, jpayne@69: const UnicodeString& to, jpayne@69: UErrorCode& status); jpayne@69: jpayne@69: /** jpayne@69: * Sets the starting date of the 100-year window that dates with 2-digit years jpayne@69: * are considered to fall within. jpayne@69: * @param startDate the start date jpayne@69: * @param status Receives a status code, which will be U_ZERO_ERROR jpayne@69: * if the operation succeeds. jpayne@69: */ jpayne@69: void parseAmbiguousDatesAsAfter(UDate startDate, UErrorCode& status); jpayne@69: jpayne@69: /** jpayne@69: * Return the length matched by the given affix, or -1 if none. jpayne@69: * Runs of white space in the affix, match runs of white space in jpayne@69: * the input. jpayne@69: * @param affix pattern string, taken as a literal jpayne@69: * @param input input text jpayne@69: * @param pos offset into input at which to begin matching jpayne@69: * @return length of input that matches, or -1 if match failure jpayne@69: */ jpayne@69: int32_t compareSimpleAffix(const UnicodeString& affix, jpayne@69: const UnicodeString& input, jpayne@69: int32_t pos) const; jpayne@69: jpayne@69: /** jpayne@69: * Skip over a run of zero or more Pattern_White_Space characters at jpayne@69: * pos in text. jpayne@69: */ jpayne@69: int32_t skipPatternWhiteSpace(const UnicodeString& text, int32_t pos) const; jpayne@69: jpayne@69: /** jpayne@69: * Skip over a run of zero or more isUWhiteSpace() characters at pos jpayne@69: * in text. jpayne@69: */ jpayne@69: int32_t skipUWhiteSpace(const UnicodeString& text, int32_t pos) const; jpayne@69: jpayne@69: /** jpayne@69: * Initialize LocalizedNumberFormatter instances used for speedup. jpayne@69: */ jpayne@69: void initFastNumberFormatters(UErrorCode& status); jpayne@69: jpayne@69: /** jpayne@69: * Delete the LocalizedNumberFormatter instances used for speedup. jpayne@69: */ jpayne@69: void freeFastNumberFormatters(); jpayne@69: jpayne@69: /** jpayne@69: * Initialize NumberFormat instances used for numbering system overrides. jpayne@69: */ jpayne@69: void initNumberFormatters(const Locale &locale,UErrorCode &status); jpayne@69: jpayne@69: /** jpayne@69: * Parse the given override string and set up structures for number formats jpayne@69: */ jpayne@69: void processOverrideString(const Locale &locale, const UnicodeString &str, int8_t type, UErrorCode &status); jpayne@69: jpayne@69: /** jpayne@69: * Used to map pattern characters to Calendar field identifiers. jpayne@69: */ jpayne@69: static const UCalendarDateFields fgPatternIndexToCalendarField[]; jpayne@69: jpayne@69: /** jpayne@69: * Map index into pattern character string to DateFormat field number jpayne@69: */ jpayne@69: static const UDateFormatField fgPatternIndexToDateFormatField[]; jpayne@69: jpayne@69: /** jpayne@69: * Lazy TimeZoneFormat instantiation, semantically const jpayne@69: */ jpayne@69: TimeZoneFormat *tzFormat(UErrorCode &status) const; jpayne@69: jpayne@69: const NumberFormat* getNumberFormatByIndex(UDateFormatField index) const; jpayne@69: jpayne@69: /** jpayne@69: * Used to map Calendar field to field level. jpayne@69: * The larger the level, the smaller the field unit. jpayne@69: * For example, UCAL_ERA level is 0, UCAL_YEAR level is 10, jpayne@69: * UCAL_MONTH level is 20. jpayne@69: */ jpayne@69: static const int32_t fgCalendarFieldToLevel[]; jpayne@69: jpayne@69: /** jpayne@69: * Map calendar field letter into calendar field level. jpayne@69: */ jpayne@69: static int32_t getLevelFromChar(char16_t ch); jpayne@69: jpayne@69: /** jpayne@69: * Tell if a character can be used to define a field in a format string. jpayne@69: */ jpayne@69: static UBool isSyntaxChar(char16_t ch); jpayne@69: jpayne@69: /** jpayne@69: * The formatting pattern for this formatter. jpayne@69: */ jpayne@69: UnicodeString fPattern; jpayne@69: jpayne@69: /** jpayne@69: * The numbering system override for dates. jpayne@69: */ jpayne@69: UnicodeString fDateOverride; jpayne@69: jpayne@69: /** jpayne@69: * The numbering system override for times. jpayne@69: */ jpayne@69: UnicodeString fTimeOverride; jpayne@69: jpayne@69: jpayne@69: /** jpayne@69: * The original locale used (for reloading symbols) jpayne@69: */ jpayne@69: Locale fLocale; jpayne@69: jpayne@69: /** jpayne@69: * A pointer to an object containing the strings to use in formatting (e.g., jpayne@69: * month and day names, AM and PM strings, time zone names, etc.) jpayne@69: */ jpayne@69: DateFormatSymbols* fSymbols; // Owned jpayne@69: jpayne@69: /** jpayne@69: * The time zone formatter jpayne@69: */ jpayne@69: TimeZoneFormat* fTimeZoneFormat; jpayne@69: jpayne@69: /** jpayne@69: * If dates have ambiguous years, we map them into the century starting jpayne@69: * at defaultCenturyStart, which may be any date. If defaultCenturyStart is jpayne@69: * set to SYSTEM_DEFAULT_CENTURY, which it is by default, then the system jpayne@69: * values are used. The instance values defaultCenturyStart and jpayne@69: * defaultCenturyStartYear are only used if explicitly set by the user jpayne@69: * through the API method parseAmbiguousDatesAsAfter(). jpayne@69: */ jpayne@69: UDate fDefaultCenturyStart; jpayne@69: jpayne@69: UBool fHasMinute; jpayne@69: UBool fHasSecond; jpayne@69: UBool fHasHanYearChar; // pattern contains the Han year character \u5E74 jpayne@69: jpayne@69: /** jpayne@69: * Sets fHasMinutes and fHasSeconds. jpayne@69: */ jpayne@69: void parsePattern(); jpayne@69: jpayne@69: /** jpayne@69: * See documentation for defaultCenturyStart. jpayne@69: */ jpayne@69: /*transient*/ int32_t fDefaultCenturyStartYear; jpayne@69: jpayne@69: struct NSOverride : public UMemory { jpayne@69: const SharedNumberFormat *snf; jpayne@69: int32_t hash; jpayne@69: NSOverride *next; jpayne@69: void free(); jpayne@69: NSOverride() : snf(NULL), hash(0), next(NULL) { jpayne@69: } jpayne@69: ~NSOverride(); jpayne@69: }; jpayne@69: jpayne@69: /** jpayne@69: * The number format in use for each date field. NULL means fall back jpayne@69: * to fNumberFormat in DateFormat. jpayne@69: */ jpayne@69: const SharedNumberFormat **fSharedNumberFormatters; jpayne@69: jpayne@69: enum NumberFormatterKey { jpayne@69: SMPDTFMT_NF_1x10, jpayne@69: SMPDTFMT_NF_2x10, jpayne@69: SMPDTFMT_NF_3x10, jpayne@69: SMPDTFMT_NF_4x10, jpayne@69: SMPDTFMT_NF_2x2, jpayne@69: SMPDTFMT_NF_COUNT jpayne@69: }; jpayne@69: jpayne@69: /** jpayne@69: * Number formatters pre-allocated for fast performance on the most common integer lengths. jpayne@69: */ jpayne@69: const number::LocalizedNumberFormatter* fFastNumberFormatters[SMPDTFMT_NF_COUNT] = {}; jpayne@69: jpayne@69: UBool fHaveDefaultCentury; jpayne@69: jpayne@69: const BreakIterator* fCapitalizationBrkIter; jpayne@69: }; jpayne@69: jpayne@69: inline UDate jpayne@69: SimpleDateFormat::get2DigitYearStart(UErrorCode& /*status*/) const jpayne@69: { jpayne@69: return fDefaultCenturyStart; jpayne@69: } jpayne@69: jpayne@69: U_NAMESPACE_END jpayne@69: jpayne@69: #endif /* #if !UCONFIG_NO_FORMATTING */ jpayne@69: jpayne@69: #endif /* U_SHOW_CPLUSPLUS_API */ jpayne@69: jpayne@69: #endif // _SMPDTFMT jpayne@69: //eof