Adding upstream version 115.8.0esr.upstream/115.8.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 751 insertions, 0 deletions

diff --git a/intl/icu/source/i18n/unicode/udatpg.h b/intl/icu/source/i18n/unicode/udatpg.h
new file mode 100644
index 0000000000..1d3060350e
--- /dev/null
+++ b/intl/icu/source/i18n/unicode/udatpg.h
@@ -0,0 +1,751 @@
+// © 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:   UTF-8
+*   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/udat.h"
+#include "unicode/uenum.h"
+
+#if U_SHOW_CPLUSPLUS_API
+#include "unicode/localpointer.h"
+#endif   // U_SHOW_CPLUSPLUS_API
+
+/**
+ * \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. */
+#ifndef U_FORCE_HIDE_DEPRECATED_API
+    /**
+     * 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
+#endif  // U_FORCE_HIDE_DEPRECATED_API
+} UDateTimePatternField;
+
+/**
+ * Field display name width constants for udatpg_getFieldDisplayName().
+ * @stable ICU 61
+ */
+typedef enum UDateTimePGDisplayWidth {
+    /** @stable ICU 61 */
+    UDATPG_WIDE,
+    /** @stable ICU 61 */
+    UDATPG_ABBREVIATED,
+    /** @stable ICU 61 */
+    UDATPG_NARROW
+} UDateTimePGDisplayWidth;
+
+/**
+ * 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_CAPI 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_CAPI UDateTimePatternGenerator * U_EXPORT2
+udatpg_openEmpty(UErrorCode *pErrorCode);
+
+/**
+  * Close a generator.
+  * @param dtpg a pointer to UDateTimePatternGenerator.
+  * @stable ICU 3.8
+  */
+U_CAPI 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_CAPI 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_CAPI 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_CAPI 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_CAPI 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_CAPI 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 overridden. 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_CAPI 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_CAPI 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_CAPI 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_CAPI 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. Note: The more general function
+ * for getting date/time field display names is udatpg_getFieldDisplayName.
+ *
+ * @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
+ * @see udatpg_getFieldDisplayName
+ * @stable ICU 3.8
+ */
+U_CAPI const UChar * U_EXPORT2
+udatpg_getAppendItemName(const UDateTimePatternGenerator *dtpg,
+                         UDateTimePatternField field,
+                         int32_t *pLength);
+
+/**
+ * The general interface to get a display name for a particular date/time field,
+ * in one of several possible display widths.
+ *
+ * @param dtpg
+ *          A pointer to the UDateTimePatternGenerator object with the localized
+ *          display names.
+ * @param field
+ *          The desired UDateTimePatternField, such as UDATPG_ERA_FIELD.
+ * @param width
+ *          The desired UDateTimePGDisplayWidth, such as UDATPG_ABBREVIATED.
+ * @param fieldName
+ *          A pointer to a buffer to receive the NULL-terminated display name. If the name
+ *          fits into fieldName but cannot be  NULL-terminated (length == capacity) then
+ *          the error code is set to U_STRING_NOT_TERMINATED_WARNING. If the name doesn't
+ *          fit into fieldName then the error code is set to U_BUFFER_OVERFLOW_ERROR.
+ * @param capacity
+ *          The size of fieldName (in UChars).
+ * @param pErrorCode
+ *          A pointer to a UErrorCode to receive any errors
+ * @return
+ *         The full length of the name; if greater than capacity, fieldName contains a
+ *         truncated result.
+ * @stable ICU 61
+ */
+U_CAPI int32_t U_EXPORT2
+udatpg_getFieldDisplayName(const UDateTimePatternGenerator *dtpg,
+                           UDateTimePatternField field,
+                           UDateTimePGDisplayWidth width,
+                           UChar *fieldName, int32_t capacity,
+                           UErrorCode *pErrorCode);
+
+/**
+ * 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".
+ *
+ * There are four DateTimeFormats in a UDateTimePatternGenerator object,
+ * corresponding to date styles UDAT_FULL..UDAT_SHORT. This method sets
+ * all of them to the specified pattern. To set them individually, see
+ * udatpg_setDateTimeFormatForStyle.
+ *
+ * @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_CAPI void U_EXPORT2
+udatpg_setDateTimeFormat(const UDateTimePatternGenerator *dtpg,
+                         const UChar *dtFormat, int32_t length);
+
+/**
+ * Getter corresponding to setDateTimeFormat.
+ *
+ * There are four DateTimeFormats in a UDateTimePatternGenerator object,
+ * corresponding to date styles UDAT_FULL..UDAT_SHORT. This method gets
+ * the style for UDAT_MEDIUM (the default). To get them individually, see
+ * udatpg_getDateTimeFormatForStyle.
+ *
+ * @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_CAPI const UChar * U_EXPORT2
+udatpg_getDateTimeFormat(const UDateTimePatternGenerator *dtpg,
+                         int32_t *pLength);
+
+#if !UCONFIG_NO_FORMATTING
+/**
+ * dateTimeFormats are message patterns used to compose combinations of date
+ * and time patterns. There are four length styles, corresponding to the
+ * inferred style of the date pattern; these are UDateFormatStyle values:
+ *  - UDAT_FULL (for date pattern with weekday and long month), else
+ *  - UDAT_LONG (for a date pattern with long month), else
+ *  - UDAT_MEDIUM (for a date pattern with abbreviated month), else
+ *  - UDAT_SHORT (for any other date pattern).
+ * For details on dateTimeFormats, see
+ * https://www.unicode.org/reports/tr35/tr35-dates.html#dateTimeFormats.
+ * The default pattern in the root locale for all styles is "{1} {0}".
+ *
+ * @param udtpg
+ *              a pointer to the UDateTimePatternGenerator
+ * @param style
+ *              one of UDAT_FULL..UDAT_SHORT. Error if out of range.
+ * @param dateTimeFormat
+ *              the new dateTimeFormat to set for the the specified style
+ * @param length
+ *              the length of dateTimeFormat, or -1 if unknown and pattern
+ *              is null-terminated
+ * @param pErrorCode
+ *              a pointer to the UErrorCode (in/out parameter); if no failure
+ *              status is already set, it will be set according to result of the
+ *              function (e.g. U_ILLEGAL_ARGUMENT_ERROR for style out of range).
+ * @stable ICU 71
+ */
+U_CAPI void U_EXPORT2
+udatpg_setDateTimeFormatForStyle(UDateTimePatternGenerator *udtpg,
+                        UDateFormatStyle style,
+                        const UChar *dateTimeFormat, int32_t length,
+                        UErrorCode *pErrorCode);
+
+/**
+ * Getter corresponding to udatpg_setDateTimeFormatForStyle.
+ *
+ * @param udtpg
+ *              a pointer to the UDateTimePatternGenerator
+ * @param style
+ *              one of UDAT_FULL..UDAT_SHORT. Error if out of range.
+ * @param pLength
+ *              a pointer that will receive the length of the format. May be NULL
+ *              if length is not desired.
+ * @param pErrorCode
+ *              a pointer to the UErrorCode (in/out parameter); if no failure
+ *              status is already set, it will be set according to result of the
+ *              function (e.g. U_ILLEGAL_ARGUMENT_ERROR for style out of range).
+ * @return
+ *              pointer to the current dateTimeFormat (0 terminated) for the specified
+ *              style, or empty string in case of error. The pointer and its contents
+ *              may no longer be valid if udatpg_setDateTimeFormat is called, or
+ *              udatpg_setDateTimeFormatForStyle for the same style is called, or the
+ *              UDateTimePatternGenerator object is closed.
+ * @stable ICU 71
+ */
+U_CAPI const UChar* U_EXPORT2
+udatpg_getDateTimeFormatForStyle(const UDateTimePatternGenerator *udtpg,
+                        UDateFormatStyle style, int32_t *pLength,
+                        UErrorCode *pErrorCode);
+#endif /* #if !UCONFIG_NO_FORMATTING */
+
+/**
+ * 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_CAPI 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_CAPI 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_CAPI 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_CAPI 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_CAPI 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_CAPI 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_CAPI const UChar * U_EXPORT2
+udatpg_getPatternForSkeleton(const UDateTimePatternGenerator *dtpg,
+                             const UChar *skeleton, int32_t skeletonLength,
+                             int32_t *pLength);
+
+#if !UCONFIG_NO_FORMATTING
+
+/**
+ * Return the default hour cycle for a locale. Uses the locale that the
+ * UDateTimePatternGenerator was initially created with.
+ * 
+ * Cannot be used on an empty UDateTimePatternGenerator instance.
+ * 
+ * @param dtpg a pointer to UDateTimePatternGenerator.
+ * @param pErrorCode a pointer to the UErrorCode which must not indicate a
+ *                   failure before the function call. Set to U_UNSUPPORTED_ERROR
+ *                   if used on an empty instance.
+ * @return the default hour cycle.
+ * @stable ICU 67
+ */
+U_CAPI UDateFormatHourCycle U_EXPORT2
+udatpg_getDefaultHourCycle(const UDateTimePatternGenerator *dtpg, UErrorCode* pErrorCode);
+
+#endif /* #if !UCONFIG_NO_FORMATTING */
+
+#endif