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diff --git a/intl/icu/source/i18n/unicode/udatpg.h b/intl/icu/source/i18n/unicode/udatpg.h new file mode 100644 index 000000000..47d3afb1d --- /dev/null +++ b/intl/icu/source/i18n/unicode/udatpg.h @@ -0,0 +1,605 @@ +// Copyright (C) 2016 and later: Unicode, Inc. and others. +// License & terms of use: http://www.unicode.org/copyright.html +/* +******************************************************************************* +* +* Copyright (C) 2007-2015, International Business Machines +* Corporation and others. All Rights Reserved. +* +******************************************************************************* +* file name: udatpg.h +* encoding: US-ASCII +* tab size: 8 (not used) +* indentation:4 +* +* created on: 2007jul30 +* created by: Markus W. Scherer +*/ + +#ifndef __UDATPG_H__ +#define __UDATPG_H__ + +#include "unicode/utypes.h" +#include "unicode/uenum.h" +#include "unicode/localpointer.h" + +/** + * \file + * \brief C API: Wrapper for icu::DateTimePatternGenerator (unicode/dtptngen.h). + * + * UDateTimePatternGenerator provides flexible generation of date format patterns, + * like "yy-MM-dd". The user can build up the generator by adding successive + * patterns. Once that is done, a query can be made using a "skeleton", which is + * a pattern which just includes the desired fields and lengths. The generator + * will return the "best fit" pattern corresponding to that skeleton. + * <p>The main method people will use is udatpg_getBestPattern, since normally + * UDateTimePatternGenerator is pre-built with data from a particular locale. + * However, generators can be built directly from other data as well. + * <p><i>Issue: may be useful to also have a function that returns the list of + * fields in a pattern, in order, since we have that internally. + * That would be useful for getting the UI order of field elements.</i> + */ + +/** + * Opaque type for a date/time pattern generator object. + * @stable ICU 3.8 + */ +typedef void *UDateTimePatternGenerator; + +/** + * Field number constants for udatpg_getAppendItemFormats() and similar functions. + * These constants are separate from UDateFormatField despite semantic overlap + * because some fields are merged for the date/time pattern generator. + * @stable ICU 3.8 + */ +typedef enum UDateTimePatternField { + /** @stable ICU 3.8 */ + UDATPG_ERA_FIELD, + /** @stable ICU 3.8 */ + UDATPG_YEAR_FIELD, + /** @stable ICU 3.8 */ + UDATPG_QUARTER_FIELD, + /** @stable ICU 3.8 */ + UDATPG_MONTH_FIELD, + /** @stable ICU 3.8 */ + UDATPG_WEEK_OF_YEAR_FIELD, + /** @stable ICU 3.8 */ + UDATPG_WEEK_OF_MONTH_FIELD, + /** @stable ICU 3.8 */ + UDATPG_WEEKDAY_FIELD, + /** @stable ICU 3.8 */ + UDATPG_DAY_OF_YEAR_FIELD, + /** @stable ICU 3.8 */ + UDATPG_DAY_OF_WEEK_IN_MONTH_FIELD, + /** @stable ICU 3.8 */ + UDATPG_DAY_FIELD, + /** @stable ICU 3.8 */ + UDATPG_DAYPERIOD_FIELD, + /** @stable ICU 3.8 */ + UDATPG_HOUR_FIELD, + /** @stable ICU 3.8 */ + UDATPG_MINUTE_FIELD, + /** @stable ICU 3.8 */ + UDATPG_SECOND_FIELD, + /** @stable ICU 3.8 */ + UDATPG_FRACTIONAL_SECOND_FIELD, + /** @stable ICU 3.8 */ + UDATPG_ZONE_FIELD, + + // Do not conditionalize the following with #ifndef U_HIDE_DEPRECATED_API, + // it is needed for layout of DateTimePatternGenerator object. + /** + * One more than the highest normal UDateTimePatternField value. + * @deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420. + */ + UDATPG_FIELD_COUNT +} UDateTimePatternField; + +/** + * Masks to control forcing the length of specified fields in the returned + * pattern to match those in the skeleton (when this would not happen + * otherwise). These may be combined to force the length of multiple fields. + * Used with udatpg_getBestPatternWithOptions, udatpg_replaceFieldTypesWithOptions. + * @stable ICU 4.4 + */ +typedef enum UDateTimePatternMatchOptions { + /** @stable ICU 4.4 */ + UDATPG_MATCH_NO_OPTIONS = 0, + /** @stable ICU 4.4 */ + UDATPG_MATCH_HOUR_FIELD_LENGTH = 1 << UDATPG_HOUR_FIELD, +#ifndef U_HIDE_INTERNAL_API + /** @internal ICU 4.4 */ + UDATPG_MATCH_MINUTE_FIELD_LENGTH = 1 << UDATPG_MINUTE_FIELD, + /** @internal ICU 4.4 */ + UDATPG_MATCH_SECOND_FIELD_LENGTH = 1 << UDATPG_SECOND_FIELD, +#endif /* U_HIDE_INTERNAL_API */ + /** @stable ICU 4.4 */ + UDATPG_MATCH_ALL_FIELDS_LENGTH = (1 << UDATPG_FIELD_COUNT) - 1 +} UDateTimePatternMatchOptions; + +/** + * Status return values from udatpg_addPattern(). + * @stable ICU 3.8 + */ +typedef enum UDateTimePatternConflict { + /** @stable ICU 3.8 */ + UDATPG_NO_CONFLICT, + /** @stable ICU 3.8 */ + UDATPG_BASE_CONFLICT, + /** @stable ICU 3.8 */ + UDATPG_CONFLICT, +#ifndef U_HIDE_DEPRECATED_API + /** + * One more than the highest normal UDateTimePatternConflict value. + * @deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420. + */ + UDATPG_CONFLICT_COUNT +#endif // U_HIDE_DEPRECATED_API +} UDateTimePatternConflict; + +/** + * Open a generator according to a given locale. + * @param locale + * @param pErrorCode a pointer to the UErrorCode which must not indicate a + * failure before the function call. + * @return a pointer to UDateTimePatternGenerator. + * @stable ICU 3.8 + */ +U_STABLE UDateTimePatternGenerator * U_EXPORT2 +udatpg_open(const char *locale, UErrorCode *pErrorCode); + +/** + * Open an empty generator, to be constructed with udatpg_addPattern(...) etc. + * @param pErrorCode a pointer to the UErrorCode which must not indicate a + * failure before the function call. + * @return a pointer to UDateTimePatternGenerator. + * @stable ICU 3.8 + */ +U_STABLE UDateTimePatternGenerator * U_EXPORT2 +udatpg_openEmpty(UErrorCode *pErrorCode); + +/** + * Close a generator. + * @param dtpg a pointer to UDateTimePatternGenerator. + * @stable ICU 3.8 + */ +U_STABLE void U_EXPORT2 +udatpg_close(UDateTimePatternGenerator *dtpg); + +#if U_SHOW_CPLUSPLUS_API + +U_NAMESPACE_BEGIN + +/** + * \class LocalUDateTimePatternGeneratorPointer + * "Smart pointer" class, closes a UDateTimePatternGenerator via udatpg_close(). + * For most methods see the LocalPointerBase base class. + * + * @see LocalPointerBase + * @see LocalPointer + * @stable ICU 4.4 + */ +U_DEFINE_LOCAL_OPEN_POINTER(LocalUDateTimePatternGeneratorPointer, UDateTimePatternGenerator, udatpg_close); + +U_NAMESPACE_END + +#endif + +/** + * Create a copy pf a generator. + * @param dtpg a pointer to UDateTimePatternGenerator to be copied. + * @param pErrorCode a pointer to the UErrorCode which must not indicate a + * failure before the function call. + * @return a pointer to a new UDateTimePatternGenerator. + * @stable ICU 3.8 + */ +U_STABLE UDateTimePatternGenerator * U_EXPORT2 +udatpg_clone(const UDateTimePatternGenerator *dtpg, UErrorCode *pErrorCode); + +/** + * Get the best pattern matching the input skeleton. It is guaranteed to + * have all of the fields in the skeleton. + * + * Note that this function uses a non-const UDateTimePatternGenerator: + * It uses a stateful pattern parser which is set up for each generator object, + * rather than creating one for each function call. + * Consecutive calls to this function do not affect each other, + * but this function cannot be used concurrently on a single generator object. + * + * @param dtpg a pointer to UDateTimePatternGenerator. + * @param skeleton + * The skeleton is a pattern containing only the variable fields. + * For example, "MMMdd" and "mmhh" are skeletons. + * @param length the length of skeleton + * @param bestPattern + * The best pattern found from the given skeleton. + * @param capacity the capacity of bestPattern. + * @param pErrorCode a pointer to the UErrorCode which must not indicate a + * failure before the function call. + * @return the length of bestPattern. + * @stable ICU 3.8 + */ +U_STABLE int32_t U_EXPORT2 +udatpg_getBestPattern(UDateTimePatternGenerator *dtpg, + const UChar *skeleton, int32_t length, + UChar *bestPattern, int32_t capacity, + UErrorCode *pErrorCode); + +/** + * Get the best pattern matching the input skeleton. It is guaranteed to + * have all of the fields in the skeleton. + * + * Note that this function uses a non-const UDateTimePatternGenerator: + * It uses a stateful pattern parser which is set up for each generator object, + * rather than creating one for each function call. + * Consecutive calls to this function do not affect each other, + * but this function cannot be used concurrently on a single generator object. + * + * @param dtpg a pointer to UDateTimePatternGenerator. + * @param skeleton + * The skeleton is a pattern containing only the variable fields. + * For example, "MMMdd" and "mmhh" are skeletons. + * @param length the length of skeleton + * @param options + * Options for forcing the length of specified fields in the + * returned pattern to match those in the skeleton (when this + * would not happen otherwise). For default behavior, use + * UDATPG_MATCH_NO_OPTIONS. + * @param bestPattern + * The best pattern found from the given skeleton. + * @param capacity + * the capacity of bestPattern. + * @param pErrorCode + * a pointer to the UErrorCode which must not indicate a + * failure before the function call. + * @return the length of bestPattern. + * @stable ICU 4.4 + */ +U_STABLE int32_t U_EXPORT2 +udatpg_getBestPatternWithOptions(UDateTimePatternGenerator *dtpg, + const UChar *skeleton, int32_t length, + UDateTimePatternMatchOptions options, + UChar *bestPattern, int32_t capacity, + UErrorCode *pErrorCode); + +/** + * Get a unique skeleton from a given pattern. For example, + * both "MMM-dd" and "dd/MMM" produce the skeleton "MMMdd". + * + * Note that this function uses a non-const UDateTimePatternGenerator: + * It uses a stateful pattern parser which is set up for each generator object, + * rather than creating one for each function call. + * Consecutive calls to this function do not affect each other, + * but this function cannot be used concurrently on a single generator object. + * + * @param unusedDtpg a pointer to UDateTimePatternGenerator. + * This parameter is no longer used. Callers may pass NULL. + * @param pattern input pattern, such as "dd/MMM". + * @param length the length of pattern. + * @param skeleton such as "MMMdd" + * @param capacity the capacity of skeleton. + * @param pErrorCode a pointer to the UErrorCode which must not indicate a + * failure before the function call. + * @return the length of skeleton. + * @stable ICU 3.8 + */ +U_STABLE int32_t U_EXPORT2 +udatpg_getSkeleton(UDateTimePatternGenerator *unusedDtpg, + const UChar *pattern, int32_t length, + UChar *skeleton, int32_t capacity, + UErrorCode *pErrorCode); + +/** + * Get a unique base skeleton from a given pattern. This is the same + * as the skeleton, except that differences in length are minimized so + * as to only preserve the difference between string and numeric form. So + * for example, both "MMM-dd" and "d/MMM" produce the skeleton "MMMd" + * (notice the single d). + * + * Note that this function uses a non-const UDateTimePatternGenerator: + * It uses a stateful pattern parser which is set up for each generator object, + * rather than creating one for each function call. + * Consecutive calls to this function do not affect each other, + * but this function cannot be used concurrently on a single generator object. + * + * @param unusedDtpg a pointer to UDateTimePatternGenerator. + * This parameter is no longer used. Callers may pass NULL. + * @param pattern input pattern, such as "dd/MMM". + * @param length the length of pattern. + * @param baseSkeleton such as "Md" + * @param capacity the capacity of base skeleton. + * @param pErrorCode a pointer to the UErrorCode which must not indicate a + * failure before the function call. + * @return the length of baseSkeleton. + * @stable ICU 3.8 + */ +U_STABLE int32_t U_EXPORT2 +udatpg_getBaseSkeleton(UDateTimePatternGenerator *unusedDtpg, + const UChar *pattern, int32_t length, + UChar *baseSkeleton, int32_t capacity, + UErrorCode *pErrorCode); + +/** + * Adds a pattern to the generator. If the pattern has the same skeleton as + * an existing pattern, and the override parameter is set, then the previous + * value is overriden. Otherwise, the previous value is retained. In either + * case, the conflicting status is set and previous vale is stored in + * conflicting pattern. + * <p> + * Note that single-field patterns (like "MMM") are automatically added, and + * don't need to be added explicitly! + * + * @param dtpg a pointer to UDateTimePatternGenerator. + * @param pattern input pattern, such as "dd/MMM" + * @param patternLength the length of pattern. + * @param override When existing values are to be overridden use true, + * otherwise use false. + * @param conflictingPattern Previous pattern with the same skeleton. + * @param capacity the capacity of conflictingPattern. + * @param pLength a pointer to the length of conflictingPattern. + * @param pErrorCode a pointer to the UErrorCode which must not indicate a + * failure before the function call. + * @return conflicting status. The value could be UDATPG_NO_CONFLICT, + * UDATPG_BASE_CONFLICT or UDATPG_CONFLICT. + * @stable ICU 3.8 + */ +U_STABLE UDateTimePatternConflict U_EXPORT2 +udatpg_addPattern(UDateTimePatternGenerator *dtpg, + const UChar *pattern, int32_t patternLength, + UBool override, + UChar *conflictingPattern, int32_t capacity, int32_t *pLength, + UErrorCode *pErrorCode); + +/** + * An AppendItem format is a pattern used to append a field if there is no + * good match. For example, suppose that the input skeleton is "GyyyyMMMd", + * and there is no matching pattern internally, but there is a pattern + * matching "yyyyMMMd", say "d-MM-yyyy". Then that pattern is used, plus the + * G. The way these two are conjoined is by using the AppendItemFormat for G + * (era). So if that value is, say "{0}, {1}" then the final resulting + * pattern is "d-MM-yyyy, G". + * <p> + * There are actually three available variables: {0} is the pattern so far, + * {1} is the element we are adding, and {2} is the name of the element. + * <p> + * This reflects the way that the CLDR data is organized. + * + * @param dtpg a pointer to UDateTimePatternGenerator. + * @param field UDateTimePatternField, such as UDATPG_ERA_FIELD + * @param value pattern, such as "{0}, {1}" + * @param length the length of value. + * @stable ICU 3.8 + */ +U_STABLE void U_EXPORT2 +udatpg_setAppendItemFormat(UDateTimePatternGenerator *dtpg, + UDateTimePatternField field, + const UChar *value, int32_t length); + +/** + * Getter corresponding to setAppendItemFormat. Values below 0 or at or + * above UDATPG_FIELD_COUNT are illegal arguments. + * + * @param dtpg A pointer to UDateTimePatternGenerator. + * @param field UDateTimePatternField, such as UDATPG_ERA_FIELD + * @param pLength A pointer that will receive the length of appendItemFormat. + * @return appendItemFormat for field. + * @stable ICU 3.8 + */ +U_STABLE const UChar * U_EXPORT2 +udatpg_getAppendItemFormat(const UDateTimePatternGenerator *dtpg, + UDateTimePatternField field, + int32_t *pLength); + +/** + * Set the name of field, eg "era" in English for ERA. These are only + * used if the corresponding AppendItemFormat is used, and if it contains a + * {2} variable. + * <p> + * This reflects the way that the CLDR data is organized. + * + * @param dtpg a pointer to UDateTimePatternGenerator. + * @param field UDateTimePatternField + * @param value name for the field. + * @param length the length of value. + * @stable ICU 3.8 + */ +U_STABLE void U_EXPORT2 +udatpg_setAppendItemName(UDateTimePatternGenerator *dtpg, + UDateTimePatternField field, + const UChar *value, int32_t length); + +/** + * Getter corresponding to setAppendItemNames. Values below 0 or at or above + * UDATPG_FIELD_COUNT are illegal arguments. + * + * @param dtpg a pointer to UDateTimePatternGenerator. + * @param field UDateTimePatternField, such as UDATPG_ERA_FIELD + * @param pLength A pointer that will receive the length of the name for field. + * @return name for field + * @stable ICU 3.8 + */ +U_STABLE const UChar * U_EXPORT2 +udatpg_getAppendItemName(const UDateTimePatternGenerator *dtpg, + UDateTimePatternField field, + int32_t *pLength); + +/** + * The DateTimeFormat is a message format pattern used to compose date and + * time patterns. The default pattern in the root locale is "{1} {0}", where + * {1} will be replaced by the date pattern and {0} will be replaced by the + * time pattern; however, other locales may specify patterns such as + * "{1}, {0}" or "{1} 'at' {0}", etc. + * <p> + * This is used when the input skeleton contains both date and time fields, + * but there is not a close match among the added patterns. For example, + * suppose that this object was created by adding "dd-MMM" and "hh:mm", and + * its DateTimeFormat is the default "{1} {0}". Then if the input skeleton + * is "MMMdhmm", there is not an exact match, so the input skeleton is + * broken up into two components "MMMd" and "hmm". There are close matches + * for those two skeletons, so the result is put together with this pattern, + * resulting in "d-MMM h:mm". + * + * @param dtpg a pointer to UDateTimePatternGenerator. + * @param dtFormat + * message format pattern, here {1} will be replaced by the date + * pattern and {0} will be replaced by the time pattern. + * @param length the length of dtFormat. + * @stable ICU 3.8 + */ +U_STABLE void U_EXPORT2 +udatpg_setDateTimeFormat(const UDateTimePatternGenerator *dtpg, + const UChar *dtFormat, int32_t length); + +/** + * Getter corresponding to setDateTimeFormat. + * @param dtpg a pointer to UDateTimePatternGenerator. + * @param pLength A pointer that will receive the length of the format + * @return dateTimeFormat. + * @stable ICU 3.8 + */ +U_STABLE const UChar * U_EXPORT2 +udatpg_getDateTimeFormat(const UDateTimePatternGenerator *dtpg, + int32_t *pLength); + +/** + * The decimal value is used in formatting fractions of seconds. If the + * skeleton contains fractional seconds, then this is used with the + * fractional seconds. For example, suppose that the input pattern is + * "hhmmssSSSS", and the best matching pattern internally is "H:mm:ss", and + * the decimal string is ",". Then the resulting pattern is modified to be + * "H:mm:ss,SSSS" + * + * @param dtpg a pointer to UDateTimePatternGenerator. + * @param decimal + * @param length the length of decimal. + * @stable ICU 3.8 + */ +U_STABLE void U_EXPORT2 +udatpg_setDecimal(UDateTimePatternGenerator *dtpg, + const UChar *decimal, int32_t length); + +/** + * Getter corresponding to setDecimal. + * + * @param dtpg a pointer to UDateTimePatternGenerator. + * @param pLength A pointer that will receive the length of the decimal string. + * @return corresponding to the decimal point. + * @stable ICU 3.8 + */ +U_STABLE const UChar * U_EXPORT2 +udatpg_getDecimal(const UDateTimePatternGenerator *dtpg, + int32_t *pLength); + +/** + * Adjusts the field types (width and subtype) of a pattern to match what is + * in a skeleton. That is, if you supply a pattern like "d-M H:m", and a + * skeleton of "MMMMddhhmm", then the input pattern is adjusted to be + * "dd-MMMM hh:mm". This is used internally to get the best match for the + * input skeleton, but can also be used externally. + * + * Note that this function uses a non-const UDateTimePatternGenerator: + * It uses a stateful pattern parser which is set up for each generator object, + * rather than creating one for each function call. + * Consecutive calls to this function do not affect each other, + * but this function cannot be used concurrently on a single generator object. + * + * @param dtpg a pointer to UDateTimePatternGenerator. + * @param pattern Input pattern + * @param patternLength the length of input pattern. + * @param skeleton + * @param skeletonLength the length of input skeleton. + * @param dest pattern adjusted to match the skeleton fields widths and subtypes. + * @param destCapacity the capacity of dest. + * @param pErrorCode a pointer to the UErrorCode which must not indicate a + * failure before the function call. + * @return the length of dest. + * @stable ICU 3.8 + */ +U_STABLE int32_t U_EXPORT2 +udatpg_replaceFieldTypes(UDateTimePatternGenerator *dtpg, + const UChar *pattern, int32_t patternLength, + const UChar *skeleton, int32_t skeletonLength, + UChar *dest, int32_t destCapacity, + UErrorCode *pErrorCode); + +/** + * Adjusts the field types (width and subtype) of a pattern to match what is + * in a skeleton. That is, if you supply a pattern like "d-M H:m", and a + * skeleton of "MMMMddhhmm", then the input pattern is adjusted to be + * "dd-MMMM hh:mm". This is used internally to get the best match for the + * input skeleton, but can also be used externally. + * + * Note that this function uses a non-const UDateTimePatternGenerator: + * It uses a stateful pattern parser which is set up for each generator object, + * rather than creating one for each function call. + * Consecutive calls to this function do not affect each other, + * but this function cannot be used concurrently on a single generator object. + * + * @param dtpg a pointer to UDateTimePatternGenerator. + * @param pattern Input pattern + * @param patternLength the length of input pattern. + * @param skeleton + * @param skeletonLength the length of input skeleton. + * @param options + * Options controlling whether the length of specified fields in the + * pattern are adjusted to match those in the skeleton (when this + * would not happen otherwise). For default behavior, use + * UDATPG_MATCH_NO_OPTIONS. + * @param dest pattern adjusted to match the skeleton fields widths and subtypes. + * @param destCapacity the capacity of dest. + * @param pErrorCode a pointer to the UErrorCode which must not indicate a + * failure before the function call. + * @return the length of dest. + * @stable ICU 4.4 + */ +U_STABLE int32_t U_EXPORT2 +udatpg_replaceFieldTypesWithOptions(UDateTimePatternGenerator *dtpg, + const UChar *pattern, int32_t patternLength, + const UChar *skeleton, int32_t skeletonLength, + UDateTimePatternMatchOptions options, + UChar *dest, int32_t destCapacity, + UErrorCode *pErrorCode); + +/** + * Return a UEnumeration list of all the skeletons in canonical form. + * Call udatpg_getPatternForSkeleton() to get the corresponding pattern. + * + * @param dtpg a pointer to UDateTimePatternGenerator. + * @param pErrorCode a pointer to the UErrorCode which must not indicate a + * failure before the function call + * @return a UEnumeration list of all the skeletons + * The caller must close the object. + * @stable ICU 3.8 + */ +U_STABLE UEnumeration * U_EXPORT2 +udatpg_openSkeletons(const UDateTimePatternGenerator *dtpg, UErrorCode *pErrorCode); + +/** + * Return a UEnumeration list of all the base skeletons in canonical form. + * + * @param dtpg a pointer to UDateTimePatternGenerator. + * @param pErrorCode a pointer to the UErrorCode which must not indicate a + * failure before the function call. + * @return a UEnumeration list of all the base skeletons + * The caller must close the object. + * @stable ICU 3.8 + */ +U_STABLE UEnumeration * U_EXPORT2 +udatpg_openBaseSkeletons(const UDateTimePatternGenerator *dtpg, UErrorCode *pErrorCode); + +/** + * Get the pattern corresponding to a given skeleton. + * + * @param dtpg a pointer to UDateTimePatternGenerator. + * @param skeleton + * @param skeletonLength pointer to the length of skeleton. + * @param pLength pointer to the length of return pattern. + * @return pattern corresponding to a given skeleton. + * @stable ICU 3.8 + */ +U_STABLE const UChar * U_EXPORT2 +udatpg_getPatternForSkeleton(const UDateTimePatternGenerator *dtpg, + const UChar *skeleton, int32_t skeletonLength, + int32_t *pLength); + +#endif |