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diff --git a/intl/icu/source/i18n/unicode/udat.h b/intl/icu/source/i18n/unicode/udat.h new file mode 100644 index 0000000000..3823dc88c4 --- /dev/null +++ b/intl/icu/source/i18n/unicode/udat.h @@ -0,0 +1,1741 @@ +// © 2016 and later: Unicode, Inc. and others. +// License & terms of use: http://www.unicode.org/copyright.html +/* + ******************************************************************************* + * Copyright (C) 1996-2016, International Business Machines + * Corporation and others. All Rights Reserved. + ******************************************************************************* +*/ + +#ifndef UDAT_H +#define UDAT_H + +#include "unicode/utypes.h" + +#if !UCONFIG_NO_FORMATTING + +#include "unicode/ucal.h" +#include "unicode/unum.h" +#include "unicode/udisplaycontext.h" +#include "unicode/ufieldpositer.h" + +#if U_SHOW_CPLUSPLUS_API +#include "unicode/localpointer.h" +#endif // U_SHOW_CPLUSPLUS_API + +/** + * \file + * \brief C API: DateFormat + * + * <h2> Date Format C API</h2> + * + * Date Format C API consists of functions that convert dates and + * times from their internal representations to textual form and back again in a + * language-independent manner. Converting from the internal representation (milliseconds + * since midnight, January 1, 1970) to text is known as "formatting," and converting + * from text to millis is known as "parsing." We currently define only one concrete + * structure UDateFormat, which can handle pretty much all normal + * date formatting and parsing actions. + * <P> + * Date Format helps you to format and parse dates for any locale. Your code can + * be completely independent of the locale conventions for months, days of the + * week, or even the calendar format: lunar vs. solar. + * <P> + * To format a date for the current Locale with default time and date style, + * use one of the static factory methods: + * <pre> + * \code + * UErrorCode status = U_ZERO_ERROR; + * UChar *myString; + * int32_t myStrlen = 0; + * UDateFormat* dfmt = udat_open(UDAT_DEFAULT, UDAT_DEFAULT, NULL, NULL, -1, NULL, -1, &status); + * myStrlen = udat_format(dfmt, myDate, NULL, myStrlen, NULL, &status); + * if (status==U_BUFFER_OVERFLOW_ERROR){ + * status=U_ZERO_ERROR; + * myString=(UChar*)malloc(sizeof(UChar) * (myStrlen+1) ); + * udat_format(dfmt, myDate, myString, myStrlen+1, NULL, &status); + * } + * \endcode + * </pre> + * If you are formatting multiple numbers, it is more efficient to get the + * format and use it multiple times so that the system doesn't have to fetch the + * information about the local language and country conventions multiple times. + * <pre> + * \code + * UErrorCode status = U_ZERO_ERROR; + * int32_t i, myStrlen = 0; + * UChar* myString; + * char buffer[1024]; + * UDate myDateArr[] = { 0.0, 100000000.0, 2000000000.0 }; // test values + * UDateFormat* df = udat_open(UDAT_DEFAULT, UDAT_DEFAULT, NULL, NULL, -1, NULL, 0, &status); + * for (i = 0; i < 3; i++) { + * myStrlen = udat_format(df, myDateArr[i], NULL, myStrlen, NULL, &status); + * if(status == U_BUFFER_OVERFLOW_ERROR){ + * status = U_ZERO_ERROR; + * myString = (UChar*)malloc(sizeof(UChar) * (myStrlen+1) ); + * udat_format(df, myDateArr[i], myString, myStrlen+1, NULL, &status); + * printf("%s\n", u_austrcpy(buffer, myString) ); + * free(myString); + * } + * } + * \endcode + * </pre> + * To get specific fields of a date, you can use UFieldPosition to + * get specific fields. + * <pre> + * \code + * UErrorCode status = U_ZERO_ERROR; + * UFieldPosition pos; + * UChar *myString; + * int32_t myStrlen = 0; + * char buffer[1024]; + * + * pos.field = 1; // Same as the DateFormat::EField enum + * UDateFormat* dfmt = udat_open(UDAT_DEFAULT, UDAT_DEFAULT, NULL, -1, NULL, 0, &status); + * myStrlen = udat_format(dfmt, myDate, NULL, myStrlen, &pos, &status); + * if (status==U_BUFFER_OVERFLOW_ERROR){ + * status=U_ZERO_ERROR; + * myString=(UChar*)malloc(sizeof(UChar) * (myStrlen+1) ); + * udat_format(dfmt, myDate, myString, myStrlen+1, &pos, &status); + * } + * printf("date format: %s\n", u_austrcpy(buffer, myString)); + * buffer[pos.endIndex] = 0; // NULL terminate the string. + * printf("UFieldPosition position equals %s\n", &buffer[pos.beginIndex]); + * \endcode + * </pre> + * To format a date for a different Locale, specify it in the call to + * udat_open() + * <pre> + * \code + * UDateFormat* df = udat_open(UDAT_SHORT, UDAT_SHORT, "fr_FR", NULL, -1, NULL, 0, &status); + * \endcode + * </pre> + * You can use a DateFormat API udat_parse() to parse. + * <pre> + * \code + * UErrorCode status = U_ZERO_ERROR; + * int32_t parsepos=0; + * UDate myDate = udat_parse(df, myString, u_strlen(myString), &parsepos, &status); + * \endcode + * </pre> + * You can pass in different options for the arguments for date and time style + * to control the length of the result; from SHORT to MEDIUM to LONG to FULL. + * The exact result depends on the locale, but generally: + * see UDateFormatStyle for more details + * <ul type=round> + * <li> UDAT_SHORT is completely numeric, such as 12/13/52 or 3:30pm + * <li> UDAT_MEDIUM is longer, such as Jan 12, 1952 + * <li> UDAT_LONG is longer, such as January 12, 1952 or 3:30:32pm + * <li> UDAT_FULL is pretty completely specified, such as + * Tuesday, April 12, 1952 AD or 3:30:42pm PST. + * </ul> + * You can also set the time zone on the format if you wish. + * <P> + * You can also use forms of the parse and format methods with Parse Position and + * UFieldPosition to allow you to + * <ul type=round> + * <li> Progressively parse through pieces of a string. + * <li> Align any particular field, or find out where it is for selection + * on the screen. + * </ul> + * <p><strong>Date and Time Patterns:</strong></p> + * + * <p>Date and time formats are specified by <em>date and time pattern</em> strings. + * Within date and time pattern strings, all unquoted ASCII letters [A-Za-z] are reserved + * as pattern letters representing calendar fields. <code>UDateFormat</code> supports + * the date and time formatting algorithm and pattern letters defined by + * <a href="http://www.unicode.org/reports/tr35/tr35-dates.html#Date_Field_Symbol_Table">UTS#35 + * Unicode Locale Data Markup Language (LDML)</a> and further documented for ICU in the + * <a href="https://unicode-org.github.io/icu/userguide/format_parse/datetime#date-field-symbol-table">ICU + * User Guide</a>.</p> + */ + +/** A date formatter. + * For usage in C programs. + * @stable ICU 2.6 + */ +typedef void* UDateFormat; + +/** The possible date/time format styles + * @stable ICU 2.6 + */ +typedef enum UDateFormatStyle { + /** Full style */ + UDAT_FULL, + /** Long style */ + UDAT_LONG, + /** Medium style */ + UDAT_MEDIUM, + /** Short style */ + UDAT_SHORT, + /** Default style */ + UDAT_DEFAULT = UDAT_MEDIUM, + + /** Bitfield for relative date */ + UDAT_RELATIVE = (1 << 7), + + UDAT_FULL_RELATIVE = UDAT_FULL | UDAT_RELATIVE, + + UDAT_LONG_RELATIVE = UDAT_LONG | UDAT_RELATIVE, + + UDAT_MEDIUM_RELATIVE = UDAT_MEDIUM | UDAT_RELATIVE, + + UDAT_SHORT_RELATIVE = UDAT_SHORT | UDAT_RELATIVE, + + + /** No style */ + UDAT_NONE = -1, + + /** + * Use the pattern given in the parameter to udat_open + * @see udat_open + * @stable ICU 50 + */ + UDAT_PATTERN = -2, + +#ifndef U_HIDE_INTERNAL_API + /** @internal alias to UDAT_PATTERN */ + UDAT_IGNORE = UDAT_PATTERN +#endif /* U_HIDE_INTERNAL_API */ +} UDateFormatStyle; + +/* Skeletons for dates. */ + +/** + * Constant for date skeleton with year. + * @stable ICU 4.0 + */ +#define UDAT_YEAR "y" +/** + * Constant for date skeleton with quarter. + * @stable ICU 51 + */ +#define UDAT_QUARTER "QQQQ" +/** + * Constant for date skeleton with abbreviated quarter. + * @stable ICU 51 + */ +#define UDAT_ABBR_QUARTER "QQQ" +/** + * Constant for date skeleton with year and quarter. + * @stable ICU 4.0 + */ +#define UDAT_YEAR_QUARTER "yQQQQ" +/** + * Constant for date skeleton with year and abbreviated quarter. + * @stable ICU 4.0 + */ +#define UDAT_YEAR_ABBR_QUARTER "yQQQ" +/** + * Constant for date skeleton with month. + * @stable ICU 4.0 + */ +#define UDAT_MONTH "MMMM" +/** + * Constant for date skeleton with abbreviated month. + * @stable ICU 4.0 + */ +#define UDAT_ABBR_MONTH "MMM" +/** + * Constant for date skeleton with numeric month. + * @stable ICU 4.0 + */ +#define UDAT_NUM_MONTH "M" +/** + * Constant for date skeleton with year and month. + * @stable ICU 4.0 + */ +#define UDAT_YEAR_MONTH "yMMMM" +/** + * Constant for date skeleton with year and abbreviated month. + * @stable ICU 4.0 + */ +#define UDAT_YEAR_ABBR_MONTH "yMMM" +/** + * Constant for date skeleton with year and numeric month. + * @stable ICU 4.0 + */ +#define UDAT_YEAR_NUM_MONTH "yM" +/** + * Constant for date skeleton with day. + * @stable ICU 4.0 + */ +#define UDAT_DAY "d" +/** + * Constant for date skeleton with year, month, and day. + * Used in combinations date + time, date + time + zone, or time + zone. + * @stable ICU 4.0 + */ +#define UDAT_YEAR_MONTH_DAY "yMMMMd" +/** + * Constant for date skeleton with year, abbreviated month, and day. + * Used in combinations date + time, date + time + zone, or time + zone. + * @stable ICU 4.0 + */ +#define UDAT_YEAR_ABBR_MONTH_DAY "yMMMd" +/** + * Constant for date skeleton with year, numeric month, and day. + * Used in combinations date + time, date + time + zone, or time + zone. + * @stable ICU 4.0 + */ +#define UDAT_YEAR_NUM_MONTH_DAY "yMd" +/** + * Constant for date skeleton with weekday. + * @stable ICU 51 + */ +#define UDAT_WEEKDAY "EEEE" +/** + * Constant for date skeleton with abbreviated weekday. + * @stable ICU 51 + */ +#define UDAT_ABBR_WEEKDAY "E" +/** + * Constant for date skeleton with year, month, weekday, and day. + * Used in combinations date + time, date + time + zone, or time + zone. + * @stable ICU 4.0 + */ +#define UDAT_YEAR_MONTH_WEEKDAY_DAY "yMMMMEEEEd" +/** + * Constant for date skeleton with year, abbreviated month, weekday, and day. + * Used in combinations date + time, date + time + zone, or time + zone. + * @stable ICU 4.0 + */ +#define UDAT_YEAR_ABBR_MONTH_WEEKDAY_DAY "yMMMEd" +/** + * Constant for date skeleton with year, numeric month, weekday, and day. + * Used in combinations date + time, date + time + zone, or time + zone. + * @stable ICU 4.0 + */ +#define UDAT_YEAR_NUM_MONTH_WEEKDAY_DAY "yMEd" +/** + * Constant for date skeleton with long month and day. + * Used in combinations date + time, date + time + zone, or time + zone. + * @stable ICU 4.0 + */ +#define UDAT_MONTH_DAY "MMMMd" +/** + * Constant for date skeleton with abbreviated month and day. + * Used in combinations date + time, date + time + zone, or time + zone. + * @stable ICU 4.0 + */ +#define UDAT_ABBR_MONTH_DAY "MMMd" +/** + * Constant for date skeleton with numeric month and day. + * Used in combinations date + time, date + time + zone, or time + zone. + * @stable ICU 4.0 + */ +#define UDAT_NUM_MONTH_DAY "Md" +/** + * Constant for date skeleton with month, weekday, and day. + * Used in combinations date + time, date + time + zone, or time + zone. + * @stable ICU 4.0 + */ +#define UDAT_MONTH_WEEKDAY_DAY "MMMMEEEEd" +/** + * Constant for date skeleton with abbreviated month, weekday, and day. + * Used in combinations date + time, date + time + zone, or time + zone. + * @stable ICU 4.0 + */ +#define UDAT_ABBR_MONTH_WEEKDAY_DAY "MMMEd" +/** + * Constant for date skeleton with numeric month, weekday, and day. + * Used in combinations date + time, date + time + zone, or time + zone. + * @stable ICU 4.0 + */ +#define UDAT_NUM_MONTH_WEEKDAY_DAY "MEd" + +/* Skeletons for times. */ + +/** + * Constant for date skeleton with hour, with the locale's preferred hour format (12 or 24). + * @stable ICU 4.0 + */ +#define UDAT_HOUR "j" +/** + * Constant for date skeleton with hour in 24-hour presentation. + * @stable ICU 51 + */ +#define UDAT_HOUR24 "H" +/** + * Constant for date skeleton with minute. + * @stable ICU 51 + */ +#define UDAT_MINUTE "m" +/** + * Constant for date skeleton with hour and minute, with the locale's preferred hour format (12 or 24). + * Used in combinations date + time, date + time + zone, or time + zone. + * @stable ICU 4.0 + */ +#define UDAT_HOUR_MINUTE "jm" +/** + * Constant for date skeleton with hour and minute in 24-hour presentation. + * Used in combinations date + time, date + time + zone, or time + zone. + * @stable ICU 4.0 + */ +#define UDAT_HOUR24_MINUTE "Hm" +/** + * Constant for date skeleton with second. + * @stable ICU 51 + */ +#define UDAT_SECOND "s" +/** + * Constant for date skeleton with hour, minute, and second, + * with the locale's preferred hour format (12 or 24). + * Used in combinations date + time, date + time + zone, or time + zone. + * @stable ICU 4.0 + */ +#define UDAT_HOUR_MINUTE_SECOND "jms" +/** + * Constant for date skeleton with hour, minute, and second in + * 24-hour presentation. + * Used in combinations date + time, date + time + zone, or time + zone. + * @stable ICU 4.0 + */ +#define UDAT_HOUR24_MINUTE_SECOND "Hms" +/** + * Constant for date skeleton with minute and second. + * Used in combinations date + time, date + time + zone, or time + zone. + * @stable ICU 4.0 + */ +#define UDAT_MINUTE_SECOND "ms" + +/* Skeletons for time zones. */ + +/** + * Constant for <i>generic location format</i>, such as Los Angeles Time; + * used in combinations date + time + zone, or time + zone. + * @see <a href="http://unicode.org/reports/tr35/#Date_Format_Patterns">LDML Date Format Patterns</a> + * @see <a href="http://unicode.org/reports/tr35/#Time_Zone_Fallback">LDML Time Zone Fallback</a> + * @stable ICU 51 + */ +#define UDAT_LOCATION_TZ "VVVV" +/** + * Constant for <i>generic non-location format</i>, such as Pacific Time; + * used in combinations date + time + zone, or time + zone. + * @see <a href="http://unicode.org/reports/tr35/#Date_Format_Patterns">LDML Date Format Patterns</a> + * @see <a href="http://unicode.org/reports/tr35/#Time_Zone_Fallback">LDML Time Zone Fallback</a> + * @stable ICU 51 + */ +#define UDAT_GENERIC_TZ "vvvv" +/** + * Constant for <i>generic non-location format</i>, abbreviated if possible, such as PT; + * used in combinations date + time + zone, or time + zone. + * @see <a href="http://unicode.org/reports/tr35/#Date_Format_Patterns">LDML Date Format Patterns</a> + * @see <a href="http://unicode.org/reports/tr35/#Time_Zone_Fallback">LDML Time Zone Fallback</a> + * @stable ICU 51 + */ +#define UDAT_ABBR_GENERIC_TZ "v" +/** + * Constant for <i>specific non-location format</i>, such as Pacific Daylight Time; + * used in combinations date + time + zone, or time + zone. + * @see <a href="http://unicode.org/reports/tr35/#Date_Format_Patterns">LDML Date Format Patterns</a> + * @see <a href="http://unicode.org/reports/tr35/#Time_Zone_Fallback">LDML Time Zone Fallback</a> + * @stable ICU 51 + */ +#define UDAT_SPECIFIC_TZ "zzzz" +/** + * Constant for <i>specific non-location format</i>, abbreviated if possible, such as PDT; + * used in combinations date + time + zone, or time + zone. + * @see <a href="http://unicode.org/reports/tr35/#Date_Format_Patterns">LDML Date Format Patterns</a> + * @see <a href="http://unicode.org/reports/tr35/#Time_Zone_Fallback">LDML Time Zone Fallback</a> + * @stable ICU 51 + */ +#define UDAT_ABBR_SPECIFIC_TZ "z" +/** + * Constant for <i>localized GMT/UTC format</i>, such as GMT+8:00 or HPG-8:00; + * used in combinations date + time + zone, or time + zone. + * @see <a href="http://unicode.org/reports/tr35/#Date_Format_Patterns">LDML Date Format Patterns</a> + * @see <a href="http://unicode.org/reports/tr35/#Time_Zone_Fallback">LDML Time Zone Fallback</a> + * @stable ICU 51 + */ +#define UDAT_ABBR_UTC_TZ "ZZZZ" + +/* deprecated skeleton constants */ + +#ifndef U_HIDE_DEPRECATED_API +/** + * Constant for date skeleton with standalone month. + * @deprecated ICU 50 Use UDAT_MONTH instead. + */ +#define UDAT_STANDALONE_MONTH "LLLL" +/** + * Constant for date skeleton with standalone abbreviated month. + * @deprecated ICU 50 Use UDAT_ABBR_MONTH instead. + */ +#define UDAT_ABBR_STANDALONE_MONTH "LLL" + +/** + * Constant for date skeleton with hour, minute, and generic timezone. + * @deprecated ICU 50 Use instead UDAT_HOUR_MINUTE UDAT_ABBR_GENERIC_TZ or some other timezone presentation. + */ +#define UDAT_HOUR_MINUTE_GENERIC_TZ "jmv" +/** + * Constant for date skeleton with hour, minute, and timezone. + * @deprecated ICU 50 Use instead UDAT_HOUR_MINUTE UDAT_ABBR_SPECIFIC_TZ or some other timezone presentation. + */ +#define UDAT_HOUR_MINUTE_TZ "jmz" +/** + * Constant for date skeleton with hour and generic timezone. + * @deprecated ICU 50 Use instead UDAT_HOUR UDAT_ABBR_GENERIC_TZ or some other timezone presentation. + */ +#define UDAT_HOUR_GENERIC_TZ "jv" +/** + * Constant for date skeleton with hour and timezone. + * @deprecated ICU 50 Use instead UDAT_HOUR UDAT_ABBR_SPECIFIC_TZ or some other timezone presentation. + */ +#define UDAT_HOUR_TZ "jz" +#endif /* U_HIDE_DEPRECATED_API */ + +#ifndef U_HIDE_INTERNAL_API +/** + * Constant for Unicode string name of new (in 2019) Japanese calendar era, + * root/English abbreviated version (ASCII-range characters). + * @internal + */ +#define JP_ERA_2019_ROOT "Reiwa" +/** + * Constant for Unicode string name of new (in 2019) Japanese calendar era, + * Japanese abbreviated version (Han, or fullwidth Latin for testing). + * @internal + */ +#define JP_ERA_2019_JA "\\u4EE4\\u548C" +/** + * Constant for Unicode string name of new (in 2019) Japanese calendar era, + * root and Japanese narrow version (ASCII-range characters). + * @internal + */ +#define JP_ERA_2019_NARROW "R" +#endif // U_HIDE_INTERNAL_API + +/** + * FieldPosition and UFieldPosition selectors for format fields + * defined by DateFormat and UDateFormat. + * @stable ICU 3.0 + */ +typedef enum UDateFormatField { + /** + * FieldPosition and UFieldPosition selector for 'G' field alignment, + * corresponding to the UCAL_ERA field. + * @stable ICU 3.0 + */ + UDAT_ERA_FIELD = 0, + + /** + * FieldPosition and UFieldPosition selector for 'y' field alignment, + * corresponding to the UCAL_YEAR field. + * @stable ICU 3.0 + */ + UDAT_YEAR_FIELD = 1, + + /** + * FieldPosition and UFieldPosition selector for 'M' field alignment, + * corresponding to the UCAL_MONTH field. + * @stable ICU 3.0 + */ + UDAT_MONTH_FIELD = 2, + + /** + * FieldPosition and UFieldPosition selector for 'd' field alignment, + * corresponding to the UCAL_DATE field. + * @stable ICU 3.0 + */ + UDAT_DATE_FIELD = 3, + + /** + * FieldPosition and UFieldPosition selector for 'k' field alignment, + * corresponding to the UCAL_HOUR_OF_DAY field. + * UDAT_HOUR_OF_DAY1_FIELD is used for the one-based 24-hour clock. + * For example, 23:59 + 01:00 results in 24:59. + * @stable ICU 3.0 + */ + UDAT_HOUR_OF_DAY1_FIELD = 4, + + /** + * FieldPosition and UFieldPosition selector for 'H' field alignment, + * corresponding to the UCAL_HOUR_OF_DAY field. + * UDAT_HOUR_OF_DAY0_FIELD is used for the zero-based 24-hour clock. + * For example, 23:59 + 01:00 results in 00:59. + * @stable ICU 3.0 + */ + UDAT_HOUR_OF_DAY0_FIELD = 5, + + /** + * FieldPosition and UFieldPosition selector for 'm' field alignment, + * corresponding to the UCAL_MINUTE field. + * @stable ICU 3.0 + */ + UDAT_MINUTE_FIELD = 6, + + /** + * FieldPosition and UFieldPosition selector for 's' field alignment, + * corresponding to the UCAL_SECOND field. + * @stable ICU 3.0 + */ + UDAT_SECOND_FIELD = 7, + + /** + * FieldPosition and UFieldPosition selector for 'S' field alignment, + * corresponding to the UCAL_MILLISECOND field. + * + * Note: Time formats that use 'S' can display a maximum of three + * significant digits for fractional seconds, corresponding to millisecond + * resolution and a fractional seconds sub-pattern of SSS. If the + * sub-pattern is S or SS, the fractional seconds value will be truncated + * (not rounded) to the number of display places specified. If the + * fractional seconds sub-pattern is longer than SSS, the additional + * display places will be filled with zeros. + * @stable ICU 3.0 + */ + UDAT_FRACTIONAL_SECOND_FIELD = 8, + + /** + * FieldPosition and UFieldPosition selector for 'E' field alignment, + * corresponding to the UCAL_DAY_OF_WEEK field. + * @stable ICU 3.0 + */ + UDAT_DAY_OF_WEEK_FIELD = 9, + + /** + * FieldPosition and UFieldPosition selector for 'D' field alignment, + * corresponding to the UCAL_DAY_OF_YEAR field. + * @stable ICU 3.0 + */ + UDAT_DAY_OF_YEAR_FIELD = 10, + + /** + * FieldPosition and UFieldPosition selector for 'F' field alignment, + * corresponding to the UCAL_DAY_OF_WEEK_IN_MONTH field. + * @stable ICU 3.0 + */ + UDAT_DAY_OF_WEEK_IN_MONTH_FIELD = 11, + + /** + * FieldPosition and UFieldPosition selector for 'w' field alignment, + * corresponding to the UCAL_WEEK_OF_YEAR field. + * @stable ICU 3.0 + */ + UDAT_WEEK_OF_YEAR_FIELD = 12, + + /** + * FieldPosition and UFieldPosition selector for 'W' field alignment, + * corresponding to the UCAL_WEEK_OF_MONTH field. + * @stable ICU 3.0 + */ + UDAT_WEEK_OF_MONTH_FIELD = 13, + + /** + * FieldPosition and UFieldPosition selector for 'a' field alignment, + * corresponding to the UCAL_AM_PM field. + * @stable ICU 3.0 + */ + UDAT_AM_PM_FIELD = 14, + + /** + * FieldPosition and UFieldPosition selector for 'h' field alignment, + * corresponding to the UCAL_HOUR field. + * UDAT_HOUR1_FIELD is used for the one-based 12-hour clock. + * For example, 11:30 PM + 1 hour results in 12:30 AM. + * @stable ICU 3.0 + */ + UDAT_HOUR1_FIELD = 15, + + /** + * FieldPosition and UFieldPosition selector for 'K' field alignment, + * corresponding to the UCAL_HOUR field. + * UDAT_HOUR0_FIELD is used for the zero-based 12-hour clock. + * For example, 11:30 PM + 1 hour results in 00:30 AM. + * @stable ICU 3.0 + */ + UDAT_HOUR0_FIELD = 16, + + /** + * FieldPosition and UFieldPosition selector for 'z' field alignment, + * corresponding to the UCAL_ZONE_OFFSET and + * UCAL_DST_OFFSET fields. + * @stable ICU 3.0 + */ + UDAT_TIMEZONE_FIELD = 17, + + /** + * FieldPosition and UFieldPosition selector for 'Y' field alignment, + * corresponding to the UCAL_YEAR_WOY field. + * @stable ICU 3.0 + */ + UDAT_YEAR_WOY_FIELD = 18, + + /** + * FieldPosition and UFieldPosition selector for 'e' field alignment, + * corresponding to the UCAL_DOW_LOCAL field. + * @stable ICU 3.0 + */ + UDAT_DOW_LOCAL_FIELD = 19, + + /** + * FieldPosition and UFieldPosition selector for 'u' field alignment, + * corresponding to the UCAL_EXTENDED_YEAR field. + * @stable ICU 3.0 + */ + UDAT_EXTENDED_YEAR_FIELD = 20, + + /** + * FieldPosition and UFieldPosition selector for 'g' field alignment, + * corresponding to the UCAL_JULIAN_DAY field. + * @stable ICU 3.0 + */ + UDAT_JULIAN_DAY_FIELD = 21, + + /** + * FieldPosition and UFieldPosition selector for 'A' field alignment, + * corresponding to the UCAL_MILLISECONDS_IN_DAY field. + * @stable ICU 3.0 + */ + UDAT_MILLISECONDS_IN_DAY_FIELD = 22, + + /** + * FieldPosition and UFieldPosition selector for 'Z' field alignment, + * corresponding to the UCAL_ZONE_OFFSET and + * UCAL_DST_OFFSET fields. + * @stable ICU 3.0 + */ + UDAT_TIMEZONE_RFC_FIELD = 23, + + /** + * FieldPosition and UFieldPosition selector for 'v' field alignment, + * corresponding to the UCAL_ZONE_OFFSET field. + * @stable ICU 3.4 + */ + UDAT_TIMEZONE_GENERIC_FIELD = 24, + /** + * FieldPosition selector for 'c' field alignment, + * corresponding to the {@link #UCAL_DOW_LOCAL} field. + * This displays the stand alone day name, if available. + * @stable ICU 3.4 + */ + UDAT_STANDALONE_DAY_FIELD = 25, + + /** + * FieldPosition selector for 'L' field alignment, + * corresponding to the {@link #UCAL_MONTH} field. + * This displays the stand alone month name, if available. + * @stable ICU 3.4 + */ + UDAT_STANDALONE_MONTH_FIELD = 26, + + /** + * FieldPosition selector for "Q" field alignment, + * corresponding to quarters. This is implemented + * using the {@link #UCAL_MONTH} field. This + * displays the quarter. + * @stable ICU 3.6 + */ + UDAT_QUARTER_FIELD = 27, + + /** + * FieldPosition selector for the "q" field alignment, + * corresponding to stand-alone quarters. This is + * implemented using the {@link #UCAL_MONTH} field. + * This displays the stand-alone quarter. + * @stable ICU 3.6 + */ + UDAT_STANDALONE_QUARTER_FIELD = 28, + + /** + * FieldPosition and UFieldPosition selector for 'V' field alignment, + * corresponding to the UCAL_ZONE_OFFSET field. + * @stable ICU 3.8 + */ + UDAT_TIMEZONE_SPECIAL_FIELD = 29, + + /** + * FieldPosition selector for "U" field alignment, + * corresponding to cyclic year names. This is implemented + * using the {@link #UCAL_YEAR} field. This displays + * the cyclic year name, if available. + * @stable ICU 49 + */ + UDAT_YEAR_NAME_FIELD = 30, + + /** + * FieldPosition selector for 'O' field alignment, + * corresponding to the UCAL_ZONE_OFFSET and UCAL_DST_OFFSETfields. + * This displays the localized GMT format. + * @stable ICU 51 + */ + UDAT_TIMEZONE_LOCALIZED_GMT_OFFSET_FIELD = 31, + + /** + * FieldPosition selector for 'X' field alignment, + * corresponding to the UCAL_ZONE_OFFSET and UCAL_DST_OFFSETfields. + * This displays the ISO 8601 local time offset format or UTC indicator ("Z"). + * @stable ICU 51 + */ + UDAT_TIMEZONE_ISO_FIELD = 32, + + /** + * FieldPosition selector for 'x' field alignment, + * corresponding to the UCAL_ZONE_OFFSET and UCAL_DST_OFFSET fields. + * This displays the ISO 8601 local time offset format. + * @stable ICU 51 + */ + UDAT_TIMEZONE_ISO_LOCAL_FIELD = 33, + +#ifndef U_HIDE_INTERNAL_API + /** + * FieldPosition and UFieldPosition selector for 'r' field alignment, + * no directly corresponding UCAL_ field. + * @internal ICU 53 + */ + UDAT_RELATED_YEAR_FIELD = 34, +#endif /* U_HIDE_INTERNAL_API */ + + /** + * FieldPosition selector for 'b' field alignment. + * Displays midnight and noon for 12am and 12pm, respectively, if available; + * otherwise fall back to AM / PM. + * @stable ICU 57 + */ + UDAT_AM_PM_MIDNIGHT_NOON_FIELD = 35, + + /* FieldPosition selector for 'B' field alignment. + * Displays flexible day periods, such as "in the morning", if available. + * @stable ICU 57 + */ + UDAT_FLEXIBLE_DAY_PERIOD_FIELD = 36, + +#ifndef U_HIDE_INTERNAL_API + /** + * FieldPosition and UFieldPosition selector for time separator, + * no corresponding UCAL_ field. No pattern character is currently + * defined for this. + * @internal + */ + UDAT_TIME_SEPARATOR_FIELD = 37, +#endif /* U_HIDE_INTERNAL_API */ + +#ifndef U_HIDE_DEPRECATED_API + /** + * Number of FieldPosition and UFieldPosition selectors for + * DateFormat and UDateFormat. + * Valid selectors range from 0 to UDAT_FIELD_COUNT-1. + * @deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420. + */ + UDAT_FIELD_COUNT = 38 +#endif /* U_HIDE_DEPRECATED_API */ +} UDateFormatField; + + +#ifndef U_HIDE_INTERNAL_API +/** + * Is a pattern character defined for UDAT_TIME_SEPARATOR_FIELD? + * In ICU 55 it was COLON, but that was withdrawn in ICU 56. + * @internal ICU 56 + */ +#define UDAT_HAS_PATTERN_CHAR_FOR_TIME_SEPARATOR 0 +#endif /* U_HIDE_INTERNAL_API */ + + +/** + * Maps from a UDateFormatField to the corresponding UCalendarDateFields. + * + * Note 1: Since the mapping is many-to-one, there is no inverse mapping. + * + * Note 2: There is no UErrorCode parameter, so in case of error (UDateFormatField is + * unknown or has no corresponding UCalendarDateFields value), the function returns the + * current value of UCAL_FIELD_COUNT. However, that value may change from release to + * release and is consequently deprecated. For a future-proof runtime way of checking + * for errors: + * a) First save the value returned by the function when it is passed an invalid value + * such as "(UDateFormatField)-1". + * b) Then, to test for errors when passing some other UDateFormatField value, check + * whether the function returns that saved value. + * + * @param field the UDateFormatField. + * @return the UCalendarDateField. In case of error (UDateFormatField is unknown or has + * no corresponding UCalendarDateFields value) this will be the current value of + * UCAL_FIELD_COUNT, but that value may change from release to release. + * See Note 2 above. + * @stable ICU 4.4 + */ +U_CAPI UCalendarDateFields U_EXPORT2 +udat_toCalendarDateField(UDateFormatField field); + + +/** + * Open a new UDateFormat for formatting and parsing dates and times. + * A UDateFormat may be used to format dates in calls to {@link #udat_format }, + * and to parse dates in calls to {@link #udat_parse }. + * @param timeStyle The style used to format times; one of UDAT_FULL, UDAT_LONG, + * UDAT_MEDIUM, UDAT_SHORT, UDAT_DEFAULT, or UDAT_NONE (relative time styles + * are not currently supported). + * When the pattern parameter is used, pass in UDAT_PATTERN for both timeStyle and dateStyle. + * @param dateStyle The style used to format dates; one of UDAT_FULL, UDAT_LONG, + * UDAT_MEDIUM, UDAT_SHORT, UDAT_DEFAULT, UDAT_FULL_RELATIVE, UDAT_LONG_RELATIVE, + * UDAT_MEDIUM_RELATIVE, UDAT_SHORT_RELATIVE, or UDAT_NONE. + * When the pattern parameter is used, pass in UDAT_PATTERN for both timeStyle and dateStyle. + * As currently implemented, + * relative date formatting only affects a limited range of calendar days before or + * after the current date, based on the CLDR <field type="day">/<relative> data: For + * example, in English, "Yesterday", "Today", and "Tomorrow". Outside of this range, + * dates are formatted using the corresponding non-relative style. + * @param locale The locale specifying the formatting conventions + * @param tzID A timezone ID specifying the timezone to use. If 0, use + * the default timezone. + * @param tzIDLength The length of tzID, or -1 if null-terminated. + * @param pattern A pattern specifying the format to use. + * @param patternLength The number of characters in the pattern, or -1 if null-terminated. + * @param status A pointer to an UErrorCode to receive any errors + * @return A pointer to a UDateFormat to use for formatting dates and times, or 0 if + * an error occurred. + * @stable ICU 2.0 + */ +U_CAPI UDateFormat* U_EXPORT2 +udat_open(UDateFormatStyle timeStyle, + UDateFormatStyle dateStyle, + const char *locale, + const UChar *tzID, + int32_t tzIDLength, + const UChar *pattern, + int32_t patternLength, + UErrorCode *status); + + +/** +* Close a UDateFormat. +* Once closed, a UDateFormat may no longer be used. +* @param format The formatter to close. +* @stable ICU 2.0 +*/ +U_CAPI void U_EXPORT2 +udat_close(UDateFormat* format); + + +/** + * DateFormat boolean attributes + * + * @stable ICU 53 + */ +typedef enum UDateFormatBooleanAttribute { + /** + * indicates whether whitespace is allowed. Includes trailing dot tolerance. + * @stable ICU 53 + */ + UDAT_PARSE_ALLOW_WHITESPACE = 0, + /** + * indicates tolerance of numeric data when String data may be assumed. eg: UDAT_YEAR_NAME_FIELD, + * UDAT_STANDALONE_MONTH_FIELD, UDAT_DAY_OF_WEEK_FIELD + * @stable ICU 53 + */ + UDAT_PARSE_ALLOW_NUMERIC = 1, + /** + * indicates tolerance of a partial literal match + * e.g. accepting "--mon-02-march-2011" for a pattern of "'--: 'EEE-WW-MMMM-yyyy" + * @stable ICU 56 + */ + UDAT_PARSE_PARTIAL_LITERAL_MATCH = 2, + /** + * indicates tolerance of pattern mismatch between input data and specified format pattern. + * e.g. accepting "September" for a month pattern of MMM ("Sep") + * @stable ICU 56 + */ + UDAT_PARSE_MULTIPLE_PATTERNS_FOR_MATCH = 3, + + /* Do not conditionalize the following with #ifndef U_HIDE_DEPRECATED_API, + * it is needed for layout of DateFormat object. */ +#ifndef U_FORCE_HIDE_DEPRECATED_API + /** + * One more than the highest normal UDateFormatBooleanAttribute value. + * @deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420. + */ + UDAT_BOOLEAN_ATTRIBUTE_COUNT = 4 +#endif // U_FORCE_HIDE_DEPRECATED_API +} UDateFormatBooleanAttribute; + +/** + * Get a boolean attribute associated with a UDateFormat. + * An example would be a true value for a key of UDAT_PARSE_ALLOW_WHITESPACE indicating allowing whitespace leniency. + * If the formatter does not understand the attribute, -1 is returned. + * @param fmt The formatter to query. + * @param attr The attribute to query; e.g. UDAT_PARSE_ALLOW_WHITESPACE. + * @param status A pointer to an UErrorCode to receive any errors + * @return The value of attr. + * @stable ICU 53 + */ +U_CAPI UBool U_EXPORT2 +udat_getBooleanAttribute(const UDateFormat* fmt, UDateFormatBooleanAttribute attr, UErrorCode* status); + +/** + * Set a boolean attribute associated with a UDateFormat. + * An example of a boolean attribute is parse leniency control. If the formatter does not understand + * the attribute, the call is ignored. + * @param fmt The formatter to set. + * @param attr The attribute to set; one of UDAT_PARSE_ALLOW_WHITESPACE or UDAT_PARSE_ALLOW_NUMERIC + * @param newValue The new value of attr. + * @param status A pointer to an UErrorCode to receive any errors + * @stable ICU 53 + */ +U_CAPI void U_EXPORT2 +udat_setBooleanAttribute(UDateFormat *fmt, UDateFormatBooleanAttribute attr, UBool newValue, UErrorCode* status); + +/** + * Hour Cycle. + * @stable ICU 67 + */ +typedef enum UDateFormatHourCycle { + /** + * Hour in am/pm (0~11) + * @stable ICU 67 + */ + UDAT_HOUR_CYCLE_11, + + /** + * Hour in am/pm (1~12) + * @stable ICU 67 + */ + UDAT_HOUR_CYCLE_12, + + /** + * Hour in day (0~23) + * @stable ICU 67 + */ + UDAT_HOUR_CYCLE_23, + + /** + * Hour in day (1~24) + * @stable ICU 67 + */ + UDAT_HOUR_CYCLE_24 +} UDateFormatHourCycle; + +#if U_SHOW_CPLUSPLUS_API + +U_NAMESPACE_BEGIN + +/** + * \class LocalUDateFormatPointer + * "Smart pointer" class, closes a UDateFormat via udat_close(). + * For most methods see the LocalPointerBase base class. + * + * @see LocalPointerBase + * @see LocalPointer + * @stable ICU 4.4 + */ +U_DEFINE_LOCAL_OPEN_POINTER(LocalUDateFormatPointer, UDateFormat, udat_close); + +U_NAMESPACE_END + +#endif + +/** + * Open a copy of a UDateFormat. + * This function performs a deep copy. + * @param fmt The format to copy + * @param status A pointer to an UErrorCode to receive any errors. + * @return A pointer to a UDateFormat identical to fmt. + * @stable ICU 2.0 + */ +U_CAPI UDateFormat* U_EXPORT2 +udat_clone(const UDateFormat *fmt, + UErrorCode *status); + +/** +* Format a date using a UDateFormat. +* The date will be formatted using the conventions specified in {@link #udat_open } +* @param format The formatter to use +* @param dateToFormat The date to format +* @param result A pointer to a buffer to receive the formatted number. +* @param resultLength The maximum size of result. +* @param position A pointer to a UFieldPosition. On input, position->field +* is read. On output, position->beginIndex and position->endIndex indicate +* the beginning and ending indices of field number position->field, if such +* a field exists. This parameter may be NULL, in which case no field +* position data is returned. +* @param status A pointer to an UErrorCode to receive any errors +* @return The total buffer size needed; if greater than resultLength, the output was truncated. +* @see udat_parse +* @see UFieldPosition +* @stable ICU 2.0 +*/ +U_CAPI int32_t U_EXPORT2 +udat_format( const UDateFormat* format, + UDate dateToFormat, + UChar* result, + int32_t resultLength, + UFieldPosition* position, + UErrorCode* status); + +/** +* Format a date using an UDateFormat. +* The date will be formatted using the conventions specified in {@link #udat_open } +* @param format The formatter to use +* @param calendar The calendar to format. The calendar instance might be +* mutated if fields are not yet fully calculated, though +* the function won't change the logical date and time held +* by the instance. +* @param result A pointer to a buffer to receive the formatted number. +* @param capacity The maximum size of result. +* @param position A pointer to a UFieldPosition. On input, position->field +* is read. On output, position->beginIndex and position->endIndex indicate +* the beginning and ending indices of field number position->field, if such +* a field exists. This parameter may be NULL, in which case no field +* position data is returned. +* @param status A pointer to an UErrorCode to receive any errors +* @return The total buffer size needed; if greater than resultLength, the output was truncated. +* @see udat_format +* @see udat_parseCalendar +* @see UFieldPosition +* @stable ICU 55 +*/ +U_CAPI int32_t U_EXPORT2 +udat_formatCalendar( const UDateFormat* format, + UCalendar* calendar, + UChar* result, + int32_t capacity, + UFieldPosition* position, + UErrorCode* status); + +/** +* Format a date using a UDateFormat. +* The date will be formatted using the conventions specified in {@link #udat_open} +* @param format +* The formatter to use +* @param dateToFormat +* The date to format +* @param result +* A pointer to a buffer to receive the formatted number. +* @param resultLength +* The maximum size of result. +* @param fpositer +* A pointer to a UFieldPositionIterator created by {@link #ufieldpositer_open} +* (may be NULL if field position information is not needed). Any +* iteration information already present in the UFieldPositionIterator +* will be deleted, and the iterator will be reset to apply to the +* fields in the formatted string created by this function call; the +* field values provided by {@link #ufieldpositer_next} will be from the +* UDateFormatField enum. +* @param status +* A pointer to a UErrorCode to receive any errors +* @return +* The total buffer size needed; if greater than resultLength, the output was truncated. +* @see udat_parse +* @see UFieldPositionIterator +* @stable ICU 55 +*/ +U_CAPI int32_t U_EXPORT2 +udat_formatForFields( const UDateFormat* format, + UDate dateToFormat, + UChar* result, + int32_t resultLength, + UFieldPositionIterator* fpositer, + UErrorCode* status); + +/** +* Format a date using a UDateFormat. +* The date will be formatted using the conventions specified in {@link #udat_open } +* @param format +* The formatter to use +* @param calendar +* The calendar to format. The calendar instance might be mutated if fields +* are not yet fully calculated, though the function won't change the logical +* date and time held by the instance. +* @param result +* A pointer to a buffer to receive the formatted number. +* @param capacity +* The maximum size of result. +* @param fpositer +* A pointer to a UFieldPositionIterator created by {@link #ufieldpositer_open} +* (may be NULL if field position information is not needed). Any +* iteration information already present in the UFieldPositionIterator +* will be deleted, and the iterator will be reset to apply to the +* fields in the formatted string created by this function call; the +* field values provided by {@link #ufieldpositer_next} will be from the +* UDateFormatField enum. +* @param status +* A pointer to a UErrorCode to receive any errors +* @return +* The total buffer size needed; if greater than resultLength, the output was truncated. +* @see udat_format +* @see udat_parseCalendar +* @see UFieldPositionIterator +* @stable ICU 55 +*/ +U_CAPI int32_t U_EXPORT2 +udat_formatCalendarForFields( const UDateFormat* format, + UCalendar* calendar, + UChar* result, + int32_t capacity, + UFieldPositionIterator* fpositer, + UErrorCode* status); + + +/** +* Parse a string into an date/time using a UDateFormat. +* The date will be parsed using the conventions specified in {@link #udat_open }. +* <P> +* Note that the normal date formats associated with some calendars - such +* as the Chinese lunar calendar - do not specify enough fields to enable +* dates to be parsed unambiguously. In the case of the Chinese lunar +* calendar, while the year within the current 60-year cycle is specified, +* the number of such cycles since the start date of the calendar (in the +* UCAL_ERA field of the UCalendar object) is not normally part of the format, +* and parsing may assume the wrong era. For cases such as this it is +* recommended that clients parse using udat_parseCalendar with the UCalendar +* passed in set to the current date, or to a date within the era/cycle that +* should be assumed if absent in the format. +* +* @param format The formatter to use. +* @param text The text to parse. +* @param textLength The length of text, or -1 if null-terminated. +* @param parsePos If not 0, on input a pointer to an integer specifying the offset at which +* to begin parsing. If not 0, on output the offset at which parsing ended. +* @param status A pointer to an UErrorCode to receive any errors +* @return The value of the parsed date/time +* @see udat_format +* @stable ICU 2.0 +*/ +U_CAPI UDate U_EXPORT2 +udat_parse(const UDateFormat* format, + const UChar* text, + int32_t textLength, + int32_t *parsePos, + UErrorCode *status); + +/** +* Parse a string into an date/time using a UDateFormat. +* The date will be parsed using the conventions specified in {@link #udat_open }. +* @param format The formatter to use. +* @param calendar A calendar set on input to the date and time to be used for +* missing values in the date/time string being parsed, and set +* on output to the parsed date/time. When the calendar type is +* different from the internal calendar held by the UDateFormat +* instance, the internal calendar will be cloned to a work +* calendar set to the same milliseconds and time zone as this +* calendar parameter, field values will be parsed based on the +* work calendar, then the result (milliseconds and time zone) +* will be set in this calendar. +* @param text The text to parse. +* @param textLength The length of text, or -1 if null-terminated. +* @param parsePos If not 0, on input a pointer to an integer specifying the offset at which +* to begin parsing. If not 0, on output the offset at which parsing ended. +* @param status A pointer to an UErrorCode to receive any errors +* @see udat_format +* @stable ICU 2.0 +*/ +U_CAPI void U_EXPORT2 +udat_parseCalendar(const UDateFormat* format, + UCalendar* calendar, + const UChar* text, + int32_t textLength, + int32_t *parsePos, + UErrorCode *status); + +/** +* Determine if an UDateFormat will perform lenient parsing. +* With lenient parsing, the parser may use heuristics to interpret inputs that do not +* precisely match the pattern. With strict parsing, inputs must match the pattern. +* @param fmt The formatter to query +* @return true if fmt is set to perform lenient parsing, false otherwise. +* @see udat_setLenient +* @stable ICU 2.0 +*/ +U_CAPI UBool U_EXPORT2 +udat_isLenient(const UDateFormat* fmt); + +/** +* Specify whether an UDateFormat will perform lenient parsing. +* With lenient parsing, the parser may use heuristics to interpret inputs that do not +* precisely match the pattern. With strict parsing, inputs must match the pattern. +* @param fmt The formatter to set +* @param isLenient true if fmt should perform lenient parsing, false otherwise. +* @see dat_isLenient +* @stable ICU 2.0 +*/ +U_CAPI void U_EXPORT2 +udat_setLenient( UDateFormat* fmt, + UBool isLenient); + +/** +* Get the UCalendar associated with an UDateFormat. +* A UDateFormat uses a UCalendar to convert a raw value to, for example, +* the day of the week. +* @param fmt The formatter to query. +* @return A pointer to the UCalendar used by fmt. +* @see udat_setCalendar +* @stable ICU 2.0 +*/ +U_CAPI const UCalendar* U_EXPORT2 +udat_getCalendar(const UDateFormat* fmt); + +/** +* Set the UCalendar associated with an UDateFormat. +* A UDateFormat uses a UCalendar to convert a raw value to, for example, +* the day of the week. +* @param fmt The formatter to set. +* @param calendarToSet A pointer to an UCalendar to be used by fmt. +* @see udat_setCalendar +* @stable ICU 2.0 +*/ +U_CAPI void U_EXPORT2 +udat_setCalendar( UDateFormat* fmt, + const UCalendar* calendarToSet); + +/** +* Get the UNumberFormat associated with an UDateFormat. +* A UDateFormat uses a UNumberFormat to format numbers within a date, +* for example the day number. +* @param fmt The formatter to query. +* @return A pointer to the UNumberFormat used by fmt to format numbers. +* @see udat_setNumberFormat +* @stable ICU 2.0 +*/ +U_CAPI const UNumberFormat* U_EXPORT2 +udat_getNumberFormat(const UDateFormat* fmt); + +/** +* Get the UNumberFormat for specific field associated with an UDateFormat. +* For example: 'y' for year and 'M' for month +* @param fmt The formatter to query. +* @param field the field to query +* @return A pointer to the UNumberFormat used by fmt to format field numbers. +* @see udat_setNumberFormatForField +* @stable ICU 54 +*/ +U_CAPI const UNumberFormat* U_EXPORT2 +udat_getNumberFormatForField(const UDateFormat* fmt, UChar field); + +/** +* Set the UNumberFormat for specific field associated with an UDateFormat. +* It can be a single field like: "y"(year) or "M"(month) +* It can be several field combined together: "yM"(year and month) +* Note: +* 1 symbol field is enough for multiple symbol field (so "y" will override "yy", "yyy") +* If the field is not numeric, then override has no effect (like "MMM" will use abbreviation, not numerical field) +* +* @param fields the fields to set +* @param fmt The formatter to set. +* @param numberFormatToSet A pointer to the UNumberFormat to be used by fmt to format numbers. +* @param status error code passed around (memory allocation or invalid fields) +* @see udat_getNumberFormatForField +* @stable ICU 54 +*/ +U_CAPI void U_EXPORT2 +udat_adoptNumberFormatForFields( UDateFormat* fmt, + const UChar* fields, + UNumberFormat* numberFormatToSet, + UErrorCode* status); +/** +* Set the UNumberFormat associated with an UDateFormat. +* A UDateFormat uses a UNumberFormat to format numbers within a date, +* for example the day number. +* This method also clears per field NumberFormat instances previously +* set by {@see udat_setNumberFormatForField} +* @param fmt The formatter to set. +* @param numberFormatToSet A pointer to the UNumberFormat to be used by fmt to format numbers. +* @see udat_getNumberFormat +* @see udat_setNumberFormatForField +* @stable ICU 2.0 +*/ +U_CAPI void U_EXPORT2 +udat_setNumberFormat( UDateFormat* fmt, + const UNumberFormat* numberFormatToSet); +/** +* Adopt the UNumberFormat associated with an UDateFormat. +* A UDateFormat uses a UNumberFormat to format numbers within a date, +* for example the day number. +* @param fmt The formatter to set. +* @param numberFormatToAdopt A pointer to the UNumberFormat to be used by fmt to format numbers. +* @see udat_getNumberFormat +* @stable ICU 54 +*/ +U_CAPI void U_EXPORT2 +udat_adoptNumberFormat( UDateFormat* fmt, + UNumberFormat* numberFormatToAdopt); +/** +* Get a locale for which date/time formatting patterns are available. +* A UDateFormat in a locale returned by this function will perform the correct +* formatting and parsing for the locale. +* @param localeIndex The index of the desired locale. +* @return A locale for which date/time formatting patterns are available, or 0 if none. +* @see udat_countAvailable +* @stable ICU 2.0 +*/ +U_CAPI const char* U_EXPORT2 +udat_getAvailable(int32_t localeIndex); + +/** +* Determine how many locales have date/time formatting patterns available. +* This function is most useful as determining the loop ending condition for +* calls to {@link #udat_getAvailable }. +* @return The number of locales for which date/time formatting patterns are available. +* @see udat_getAvailable +* @stable ICU 2.0 +*/ +U_CAPI int32_t U_EXPORT2 +udat_countAvailable(void); + +/** +* Get the year relative to which all 2-digit years are interpreted. +* For example, if the 2-digit start year is 2100, the year 99 will be +* interpreted as 2199. +* @param fmt The formatter to query. +* @param status A pointer to an UErrorCode to receive any errors +* @return The year relative to which all 2-digit years are interpreted. +* @see udat_Set2DigitYearStart +* @stable ICU 2.0 +*/ +U_CAPI UDate U_EXPORT2 +udat_get2DigitYearStart( const UDateFormat *fmt, + UErrorCode *status); + +/** +* Set the year relative to which all 2-digit years will be interpreted. +* For example, if the 2-digit start year is 2100, the year 99 will be +* interpreted as 2199. +* @param fmt The formatter to set. +* @param d The year relative to which all 2-digit years will be interpreted. +* @param status A pointer to an UErrorCode to receive any errors +* @see udat_Set2DigitYearStart +* @stable ICU 2.0 +*/ +U_CAPI void U_EXPORT2 +udat_set2DigitYearStart( UDateFormat *fmt, + UDate d, + UErrorCode *status); + +/** +* Extract the pattern from a UDateFormat. +* The pattern will follow the pattern syntax rules. +* @param fmt The formatter to query. +* @param localized true if the pattern should be localized, false otherwise. +* @param result A pointer to a buffer to receive the pattern. +* @param resultLength The maximum size of result. +* @param status A pointer to an UErrorCode to receive any errors +* @return The total buffer size needed; if greater than resultLength, the output was truncated. +* @see udat_applyPattern +* @stable ICU 2.0 +*/ +U_CAPI int32_t U_EXPORT2 +udat_toPattern( const UDateFormat *fmt, + UBool localized, + UChar *result, + int32_t resultLength, + UErrorCode *status); + +/** +* Set the pattern used by an UDateFormat. +* The pattern should follow the pattern syntax rules. +* @param format The formatter to set. +* @param localized true if the pattern is localized, false otherwise. +* @param pattern The new pattern +* @param patternLength The length of pattern, or -1 if null-terminated. +* @see udat_toPattern +* @stable ICU 2.0 +*/ +U_CAPI void U_EXPORT2 +udat_applyPattern( UDateFormat *format, + UBool localized, + const UChar *pattern, + int32_t patternLength); + +/** + * The possible types of date format symbols + * @stable ICU 2.6 + */ +typedef enum UDateFormatSymbolType { + /** The era names, for example AD */ + UDAT_ERAS, + /** The month names, for example February */ + UDAT_MONTHS, + /** The short month names, for example Feb. */ + UDAT_SHORT_MONTHS, + /** The CLDR-style format "wide" weekday names, for example Monday */ + UDAT_WEEKDAYS, + /** + * The CLDR-style format "abbreviated" (not "short") weekday names, for example "Mon." + * For the CLDR-style format "short" weekday names, use UDAT_SHORTER_WEEKDAYS. + */ + UDAT_SHORT_WEEKDAYS, + /** The AM/PM names, for example AM */ + UDAT_AM_PMS, + /** The localized characters */ + UDAT_LOCALIZED_CHARS, + /** The long era names, for example Anno Domini */ + UDAT_ERA_NAMES, + /** The narrow month names, for example F */ + UDAT_NARROW_MONTHS, + /** The CLDR-style format "narrow" weekday names, for example "M" */ + UDAT_NARROW_WEEKDAYS, + /** Standalone context versions of months */ + UDAT_STANDALONE_MONTHS, + UDAT_STANDALONE_SHORT_MONTHS, + UDAT_STANDALONE_NARROW_MONTHS, + /** The CLDR-style stand-alone "wide" weekday names */ + UDAT_STANDALONE_WEEKDAYS, + /** + * The CLDR-style stand-alone "abbreviated" (not "short") weekday names. + * For the CLDR-style stand-alone "short" weekday names, use UDAT_STANDALONE_SHORTER_WEEKDAYS. + */ + UDAT_STANDALONE_SHORT_WEEKDAYS, + /** The CLDR-style stand-alone "narrow" weekday names */ + UDAT_STANDALONE_NARROW_WEEKDAYS, + /** The quarters, for example 1st Quarter */ + UDAT_QUARTERS, + /** The short quarter names, for example Q1 */ + UDAT_SHORT_QUARTERS, + /** Standalone context versions of quarters */ + UDAT_STANDALONE_QUARTERS, + UDAT_STANDALONE_SHORT_QUARTERS, + /** + * The CLDR-style short weekday names, e.g. "Su", Mo", etc. + * These are named "SHORTER" to contrast with the constants using _SHORT_ + * above, which actually get the CLDR-style *abbreviated* versions of the + * corresponding names. + * @stable ICU 51 + */ + UDAT_SHORTER_WEEKDAYS, + /** + * Standalone version of UDAT_SHORTER_WEEKDAYS. + * @stable ICU 51 + */ + UDAT_STANDALONE_SHORTER_WEEKDAYS, + /** + * Cyclic year names (only supported for some calendars, and only for FORMAT usage; + * udat_setSymbols not supported for UDAT_CYCLIC_YEARS_WIDE) + * @stable ICU 54 + */ + UDAT_CYCLIC_YEARS_WIDE, + /** + * Cyclic year names (only supported for some calendars, and only for FORMAT usage) + * @stable ICU 54 + */ + UDAT_CYCLIC_YEARS_ABBREVIATED, + /** + * Cyclic year names (only supported for some calendars, and only for FORMAT usage; + * udat_setSymbols not supported for UDAT_CYCLIC_YEARS_NARROW) + * @stable ICU 54 + */ + UDAT_CYCLIC_YEARS_NARROW, + /** + * Calendar zodiac names (only supported for some calendars, and only for FORMAT usage; + * udat_setSymbols not supported for UDAT_ZODIAC_NAMES_WIDE) + * @stable ICU 54 + */ + UDAT_ZODIAC_NAMES_WIDE, + /** + * Calendar zodiac names (only supported for some calendars, and only for FORMAT usage) + * @stable ICU 54 + */ + UDAT_ZODIAC_NAMES_ABBREVIATED, + /** + * Calendar zodiac names (only supported for some calendars, and only for FORMAT usage; + * udat_setSymbols not supported for UDAT_ZODIAC_NAMES_NARROW) + * @stable ICU 54 + */ + UDAT_ZODIAC_NAMES_NARROW, + + /** + * The narrow quarter names, for example 1 + * @stable ICU 70 + */ + UDAT_NARROW_QUARTERS, + + /** + * The narrow standalone quarter names, for example 1 + * @stable ICU 70 + */ + UDAT_STANDALONE_NARROW_QUARTERS +} UDateFormatSymbolType; + +struct UDateFormatSymbols; +/** Date format symbols. + * For usage in C programs. + * @stable ICU 2.6 + */ +typedef struct UDateFormatSymbols UDateFormatSymbols; + +/** +* Get the symbols associated with an UDateFormat. +* The symbols are what a UDateFormat uses to represent locale-specific data, +* for example month or day names. +* @param fmt The formatter to query. +* @param type The type of symbols to get. One of UDAT_ERAS, UDAT_MONTHS, UDAT_SHORT_MONTHS, +* UDAT_WEEKDAYS, UDAT_SHORT_WEEKDAYS, UDAT_AM_PMS, or UDAT_LOCALIZED_CHARS +* @param symbolIndex The desired symbol of type type. +* @param result A pointer to a buffer to receive the pattern. +* @param resultLength The maximum size of result. +* @param status A pointer to an UErrorCode to receive any errors +* @return The total buffer size needed; if greater than resultLength, the output was truncated. +* @see udat_countSymbols +* @see udat_setSymbols +* @stable ICU 2.0 +*/ +U_CAPI int32_t U_EXPORT2 +udat_getSymbols(const UDateFormat *fmt, + UDateFormatSymbolType type, + int32_t symbolIndex, + UChar *result, + int32_t resultLength, + UErrorCode *status); + +/** +* Count the number of particular symbols for an UDateFormat. +* This function is most useful as for determining the loop termination condition +* for calls to {@link #udat_getSymbols }. +* @param fmt The formatter to query. +* @param type The type of symbols to count. One of UDAT_ERAS, UDAT_MONTHS, UDAT_SHORT_MONTHS, +* UDAT_WEEKDAYS, UDAT_SHORT_WEEKDAYS, UDAT_AM_PMS, or UDAT_LOCALIZED_CHARS +* @return The number of symbols of type type. +* @see udat_getSymbols +* @see udat_setSymbols +* @stable ICU 2.0 +*/ +U_CAPI int32_t U_EXPORT2 +udat_countSymbols( const UDateFormat *fmt, + UDateFormatSymbolType type); + +/** +* Set the symbols associated with an UDateFormat. +* The symbols are what a UDateFormat uses to represent locale-specific data, +* for example month or day names. +* @param format The formatter to set +* @param type The type of symbols to set. One of UDAT_ERAS, UDAT_MONTHS, UDAT_SHORT_MONTHS, +* UDAT_WEEKDAYS, UDAT_SHORT_WEEKDAYS, UDAT_AM_PMS, or UDAT_LOCALIZED_CHARS +* @param symbolIndex The index of the symbol to set of type type. +* @param value The new value +* @param valueLength The length of value, or -1 if null-terminated +* @param status A pointer to an UErrorCode to receive any errors +* @see udat_getSymbols +* @see udat_countSymbols +* @stable ICU 2.0 +*/ +U_CAPI void U_EXPORT2 +udat_setSymbols( UDateFormat *format, + UDateFormatSymbolType type, + int32_t symbolIndex, + UChar *value, + int32_t valueLength, + UErrorCode *status); + +/** + * Get the locale for this date format object. + * You can choose between valid and actual locale. + * @param fmt The formatter to get the locale from + * @param type type of the locale we're looking for (valid or actual) + * @param status error code for the operation + * @return the locale name + * @stable ICU 2.8 + */ +U_CAPI const char* U_EXPORT2 +udat_getLocaleByType(const UDateFormat *fmt, + ULocDataLocaleType type, + UErrorCode* status); + +/** + * Set a particular UDisplayContext value in the formatter, such as + * UDISPCTX_CAPITALIZATION_FOR_STANDALONE. + * @param fmt The formatter for which to set a UDisplayContext value. + * @param value The UDisplayContext value to set. + * @param status A pointer to an UErrorCode to receive any errors + * @stable ICU 51 + */ +U_CAPI void U_EXPORT2 +udat_setContext(UDateFormat* fmt, UDisplayContext value, UErrorCode* status); + +/** + * Get the formatter's UDisplayContext value for the specified UDisplayContextType, + * such as UDISPCTX_TYPE_CAPITALIZATION. + * @param fmt The formatter to query. + * @param type The UDisplayContextType whose value to return + * @param status A pointer to an UErrorCode to receive any errors + * @return The UDisplayContextValue for the specified type. + * @stable ICU 53 + */ +U_CAPI UDisplayContext U_EXPORT2 +udat_getContext(const UDateFormat* fmt, UDisplayContextType type, UErrorCode* status); + +#ifndef U_HIDE_INTERNAL_API +/** +* Extract the date pattern from a UDateFormat set for relative date formatting. +* The pattern will follow the pattern syntax rules. +* @param fmt The formatter to query. +* @param result A pointer to a buffer to receive the pattern. +* @param resultLength The maximum size of result. +* @param status A pointer to a UErrorCode to receive any errors +* @return The total buffer size needed; if greater than resultLength, the output was truncated. +* @see udat_applyPatternRelative +* @internal ICU 4.2 technology preview +*/ +U_CAPI int32_t U_EXPORT2 +udat_toPatternRelativeDate(const UDateFormat *fmt, + UChar *result, + int32_t resultLength, + UErrorCode *status); + +/** +* Extract the time pattern from a UDateFormat set for relative date formatting. +* The pattern will follow the pattern syntax rules. +* @param fmt The formatter to query. +* @param result A pointer to a buffer to receive the pattern. +* @param resultLength The maximum size of result. +* @param status A pointer to a UErrorCode to receive any errors +* @return The total buffer size needed; if greater than resultLength, the output was truncated. +* @see udat_applyPatternRelative +* @internal ICU 4.2 technology preview +*/ +U_CAPI int32_t U_EXPORT2 +udat_toPatternRelativeTime(const UDateFormat *fmt, + UChar *result, + int32_t resultLength, + UErrorCode *status); + +/** +* Set the date & time patterns used by a UDateFormat set for relative date formatting. +* The patterns should follow the pattern syntax rules. +* @param format The formatter to set. +* @param datePattern The new date pattern +* @param datePatternLength The length of datePattern, or -1 if null-terminated. +* @param timePattern The new time pattern +* @param timePatternLength The length of timePattern, or -1 if null-terminated. +* @param status A pointer to a UErrorCode to receive any errors +* @see udat_toPatternRelativeDate, udat_toPatternRelativeTime +* @internal ICU 4.2 technology preview +*/ +U_CAPI void U_EXPORT2 +udat_applyPatternRelative(UDateFormat *format, + const UChar *datePattern, + int32_t datePatternLength, + const UChar *timePattern, + int32_t timePatternLength, + UErrorCode *status); + +/** + * @internal + * @see udat_open + */ +typedef UDateFormat* (U_EXPORT2 *UDateFormatOpener) (UDateFormatStyle timeStyle, + UDateFormatStyle dateStyle, + const char *locale, + const UChar *tzID, + int32_t tzIDLength, + const UChar *pattern, + int32_t patternLength, + UErrorCode *status); + +/** + * Register a provider factory + * @internal ICU 49 + */ +U_CAPI void U_EXPORT2 +udat_registerOpener(UDateFormatOpener opener, UErrorCode *status); + +/** + * Un-Register a provider factory + * @internal ICU 49 + */ +U_CAPI UDateFormatOpener U_EXPORT2 +udat_unregisterOpener(UDateFormatOpener opener, UErrorCode *status); +#endif /* U_HIDE_INTERNAL_API */ + + +#endif /* #if !UCONFIG_NO_FORMATTING */ + +#endif |