Move ICU header part 2

public/i18n/unicode/dtptngen.h

-/*
-*******************************************************************************
-* Copyright (C) 2007-2010, International Business Machines Corporation and
-* others. All Rights Reserved.
-*******************************************************************************
-*
-* File DTPTNGEN.H
-*
-*******************************************************************************
-*/
-
-#ifndef __DTPTNGEN_H__
-#define __DTPTNGEN_H__
-
-#include "unicode/datefmt.h"
-#include "unicode/locid.h"
-#include "unicode/udat.h"
-#include "unicode/udatpg.h"
-
-U_NAMESPACE_BEGIN
-
-/**
- * \file
- * \brief C++ API: Date/Time Pattern Generator
- */
-
-
-class Hashtable;
-class FormatParser;
-class DateTimeMatcher;
-class DistanceInfo;
-class PatternMap;
-class PtnSkeleton;
-
-/**
- * This class 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 getBestPattern(String skeleton),
- * since normally this class 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>
- * @stable ICU 3.8
-**/
-class U_I18N_API DateTimePatternGenerator : public UObject {
-public:
-    /**
-     * Construct a flexible generator according to default locale.
-     * @param status  Output param set to success/failure code on exit,
-     *               which must not indicate a failure before the function call.
-     * @stable ICU 3.8
-     */
-    static DateTimePatternGenerator* U_EXPORT2 createInstance(UErrorCode& status);
-
-    /**
-     * Construct a flexible generator according to data for a given locale.
-     * @param uLocale
-     * @param status  Output param set to success/failure code on exit,
-     *               which must not indicate a failure before the function call.
-     * @stable ICU 3.8
-     */
-    static DateTimePatternGenerator* U_EXPORT2 createInstance(const Locale& uLocale, UErrorCode& status);
-
-    /**
-     * Create an empty generator, to be constructed with addPattern(...) etc.
-     * @param status  Output param set to success/failure code on exit,
-     *               which must not indicate a failure before the function call.
-     * @stable ICU 3.8
-     */
-     static DateTimePatternGenerator* U_EXPORT2 createEmptyInstance(UErrorCode& status);
-     
-    /**
-     * Destructor.
-     * @stable ICU 3.8
-     */
-    virtual ~DateTimePatternGenerator();
-
-    /**
-     * Clone DateTimePatternGenerator object. Clients are responsible for 
-     * deleting the DateTimePatternGenerator object cloned.
-     * @stable ICU 3.8
-     */
-    DateTimePatternGenerator* clone() const;
-
-     /**
-      * Return true if another object is semantically equal to this one.
-      *
-      * @param other    the DateTimePatternGenerator object to be compared with.
-      * @return         true if other is semantically equal to this.
-      * @stable ICU 3.8
-      */
-    UBool operator==(const DateTimePatternGenerator& other) const;
-    
-    /**
-     * Return true if another object is semantically unequal to this one.
-     *
-     * @param other    the DateTimePatternGenerator object to be compared with.
-     * @return         true if other is semantically unequal to this.
-     * @stable ICU 3.8
-     */
-    UBool operator!=(const DateTimePatternGenerator& other) const;
-
-    /**
-     * Utility to return a unique skeleton from a given pattern. For example,
-     * both "MMM-dd" and "dd/MMM" produce the skeleton "MMMdd".
-     *
-     * @param pattern   Input pattern, such as "dd/MMM"
-     * @param status  Output param set to success/failure code on exit,
-     *                  which must not indicate a failure before the function call.
-     * @return skeleton such as "MMMdd"
-     * @stable ICU 3.8
-     */
-    UnicodeString getSkeleton(const UnicodeString& pattern, UErrorCode& status);
-
-    /**
-     * Utility to return 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).
-     *
-     * @param pattern  Input pattern, such as "dd/MMM"
-     * @param status  Output param set to success/failure code on exit,
-     *               which must not indicate a failure before the function call.
-     * @return base skeleton, such as "Md"
-     * @stable ICU 3.8
-     */
-    UnicodeString getBaseSkeleton(const UnicodeString& pattern, UErrorCode& status);
-
-    /**
-     * 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 pattern   Input pattern, such as "dd/MMM"
-     * @param override  When existing values are to be overridden use true, 
-     *                   otherwise use false.
-     * @param conflictingPattern  Previous pattern with the same skeleton.
-     * @param status  Output param set to success/failure code on exit,
-     *               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
-     */
-    UDateTimePatternConflict addPattern(const UnicodeString& pattern, 
-                                        UBool override, 
-                                        UnicodeString& conflictingPattern,
-                                        UErrorCode& status);
-
-    /**
-     * 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 field  such as UDATPG_ERA_FIELD.
-     * @param value  pattern, such as "{0}, {1}"
-     * @stable ICU 3.8
-     */
-    void setAppendItemFormat(UDateTimePatternField field, const UnicodeString& value);
-
-    /**
-     * Getter corresponding to setAppendItemFormat. Values below 0 or at or
-     * above UDATPG_FIELD_COUNT are illegal arguments.
-     *
-     * @param  field  such as UDATPG_ERA_FIELD.
-     * @return append pattern for field
-     * @stable ICU 3.8
-     */
-    const UnicodeString& getAppendItemFormat(UDateTimePatternField field) const;
-
-    /**
-     * Sets the names 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 field   such as UDATPG_ERA_FIELD.
-     * @param value   name of the field
-     * @stable ICU 3.8
-     */
-    void setAppendItemName(UDateTimePatternField field, const UnicodeString& value);
-
-    /**
-     * Getter corresponding to setAppendItemNames. Values below 0 or at or above
-     * UDATPG_FIELD_COUNT are illegal arguments.
-     *
-     * @param field  such as UDATPG_ERA_FIELD.
-     * @return name for field
-     * @stable ICU 3.8
-     */
-    const UnicodeString& getAppendItemName(UDateTimePatternField field) const;
-
-    /**
-     * The date time format is a message format pattern used to compose date and
-     * time patterns. The default value is "{0} {1}", where {0} will be replaced
-     * by the date pattern and {1} will be replaced by the time pattern.
-     * <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 "{0} {1}". 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 dateTimeFormat
-     *            message format pattern, here {0} will be replaced by the date
-     *            pattern and {1} will be replaced by the time pattern.
-     * @stable ICU 3.8
-     */
-    void setDateTimeFormat(const UnicodeString& dateTimeFormat);
-
-    /**
-     * Getter corresponding to setDateTimeFormat.
-     * @return DateTimeFormat.
-     * @stable ICU 3.8
-     */
-    const UnicodeString& getDateTimeFormat() const;
-
-    /**
-     * Return the best pattern matching the input skeleton. It is guaranteed to
-     * have all of the fields in the skeleton.
-     *
-     * @param skeleton
-     *            The skeleton is a pattern containing only the variable fields.
-     *            For example, "MMMdd" and "mmhh" are skeletons.
-     * @param status  Output param set to success/failure code on exit,
-     *               which must not indicate a failure before the function call.
-     * @return bestPattern
-     *            The best pattern found from the given skeleton.
-     * @stable ICU 3.8
-     */
-     UnicodeString getBestPattern(const UnicodeString& skeleton, UErrorCode& status);
-
-
-    /**
-     * Return the best pattern matching the input skeleton. It is guaranteed to
-     * have all of the fields in the skeleton.
-     *
-     * @param skeleton
-     *            The skeleton is a pattern containing only the variable fields.
-     *            For example, "MMMdd" and "mmhh" are skeletons.
-     * @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 status
-     *            Output param set to success/failure code on exit,
-     *            which must not indicate a failure before the function call.
-     * @return bestPattern
-     *            The best pattern found from the given skeleton.
-     * @stable ICU 4.4
-     */
-     UnicodeString getBestPattern(const UnicodeString& skeleton,
-                                  UDateTimePatternMatchOptions options,
-                                  UErrorCode& status);
-
-
-    /**
-     * 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.
-     *
-     * @param pattern Input pattern
-     * @param skeleton
-     *            The skeleton is a pattern containing only the variable fields.
-     *            For example, "MMMdd" and "mmhh" are skeletons.
-     * @param status  Output param set to success/failure code on exit,
-     *               which must not indicate a failure before the function call.
-     * @return pattern adjusted to match the skeleton fields widths and subtypes.
-     * @stable ICU 3.8
-     */
-     UnicodeString replaceFieldTypes(const UnicodeString& pattern, 
-                                     const UnicodeString& skeleton, 
-                                     UErrorCode& status);
-
-    /**
-     * 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.
-     *
-     * @param pattern Input pattern
-     * @param skeleton
-     *            The skeleton is a pattern containing only the variable fields.
-     *            For example, "MMMdd" and "mmhh" are skeletons.
-     * @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 status
-     *            Output param set to success/failure code on exit,
-     *            which must not indicate a failure before the function call.
-     * @return pattern adjusted to match the skeleton fields widths and subtypes.
-     * @stable ICU 4.4
-     */
-     UnicodeString replaceFieldTypes(const UnicodeString& pattern, 
-                                     const UnicodeString& skeleton, 
-                                     UDateTimePatternMatchOptions options,
-                                     UErrorCode& status);
-
-    /**
-     * Return a list of all the skeletons (in canonical form) from this class.
-     *
-     * Call getPatternForSkeleton() to get the corresponding pattern.
-     *
-     * @param status  Output param set to success/failure code on exit,
-     *               which must not indicate a failure before the function call.
-     * @return StringEnumeration with the skeletons.
-     *         The caller must delete the object.
-     * @stable ICU 3.8
-     */
-     StringEnumeration* getSkeletons(UErrorCode& status) const;
-
-     /**
-      * Get the pattern corresponding to a given skeleton.
-      * @param skeleton 
-      * @return pattern corresponding to a given skeleton.
-      * @stable ICU 3.8
-      */
-     const UnicodeString& getPatternForSkeleton(const UnicodeString& skeleton) const;
-     
-    /**
-     * Return a list of all the base skeletons (in canonical form) from this class.
-     *
-     * @param status  Output param set to success/failure code on exit,
-     *               which must not indicate a failure before the function call.
-     * @return a StringEnumeration with the base skeletons.
-     *         The caller must delete the object.
-     * @stable ICU 3.8
-     */
-     StringEnumeration* getBaseSkeletons(UErrorCode& status) const;
-     
-     /**
-      * Return a list of redundant patterns are those which if removed, make no 
-      * difference in the resulting getBestPattern values. This method returns a 
-      * list of them, to help check the consistency of the patterns used to build 
-      * this generator.
-      * 
-      * @param status  Output param set to success/failure code on exit,
-      *               which must not indicate a failure before the function call.
-      * @return a StringEnumeration with the redundant pattern.
-      *         The caller must delete the object.
-      * @internal ICU 3.8
-      */
-     StringEnumeration* getRedundants(UErrorCode& status);
-      
-    /**
-     * 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 decimal 
-     * @stable ICU 3.8
-     */
-    void setDecimal(const UnicodeString& decimal);
-
-    /**
-     * Getter corresponding to setDecimal.
-     * @return UnicodeString corresponding to the decimal point
-     * @stable ICU 3.8
-     */
-    const UnicodeString& getDecimal() const;
-
-    /**
-     * ICU "poor man's RTTI", returns a UClassID for the actual class.
-     *
-     * @stable ICU 3.8
-     */
-    virtual UClassID getDynamicClassID() const;
-
-    /**
-     * ICU "poor man's RTTI", returns a UClassID for this class.
-     *
-     * @stable ICU 3.8
-     */
-    static UClassID U_EXPORT2 getStaticClassID(void);
-
-private:
-    /**
-     * Constructor.
-     * @stable ICU 3.8
-     */
-    DateTimePatternGenerator(UErrorCode & status);
-
-    /**
-     * Constructor.
-     * @stable ICU 3.8
-     */
-    DateTimePatternGenerator(const Locale& locale, UErrorCode & status);
-
-    /**
-     * Copy constructor.
-     * @param other DateTimePatternGenerator to copy
-     * @stable ICU 3.8
-     */
-    DateTimePatternGenerator(const DateTimePatternGenerator& other);
-
-    /**
-     * Default assignment operator.
-     * @param other DateTimePatternGenerator to copy
-     * @stable ICU 3.8
-     */
-    DateTimePatternGenerator& operator=(const DateTimePatternGenerator& other);
-
-    Locale pLocale;  // pattern locale
-    FormatParser *fp;
-    DateTimeMatcher* dtMatcher;
-    DistanceInfo *distanceInfo;
-    PatternMap *patternMap;
-    UnicodeString appendItemFormats[UDATPG_FIELD_COUNT];
-    UnicodeString appendItemNames[UDATPG_FIELD_COUNT];
-    UnicodeString dateTimeFormat;
-    UnicodeString decimal;
-    DateTimeMatcher *skipMatcher;
-    Hashtable *fAvailableFormatKeyHash;
-    UnicodeString hackPattern;
-    UnicodeString emptyString;
-    UChar fDefaultHourFormatChar;
-
-    void initData(const Locale &locale, UErrorCode &status);
-    void addCanonicalItems();
-    void addICUPatterns(const Locale& locale, UErrorCode& status);
-    void hackTimes(const UnicodeString& hackPattern, UErrorCode& status);
-    void addCLDRData(const Locale& locale, UErrorCode& status);
-    UDateTimePatternConflict addPatternWithSkeleton(const UnicodeString& pattern, const UnicodeString * skeletonToUse, UBool override, UnicodeString& conflictingPattern, UErrorCode& status);
-    void initHashtable(UErrorCode& status);
-    void setDateTimeFromCalendar(const Locale& locale, UErrorCode& status);
-    void setDecimalSymbols(const Locale& locale, UErrorCode& status);
-    UDateTimePatternField getAppendFormatNumber(const char* field) const;
-    UDateTimePatternField getAppendNameNumber(const char* field) const;
-    void getAppendName(UDateTimePatternField field, UnicodeString& value);
-    int32_t getCanonicalIndex(const UnicodeString& field);
-    const UnicodeString* getBestRaw(DateTimeMatcher& source, int32_t includeMask, DistanceInfo* missingFields, const PtnSkeleton** specifiedSkeletonPtr = 0);
-    UnicodeString adjustFieldTypes(const UnicodeString& pattern, const PtnSkeleton* specifiedSkeleton, UBool fixFractionalSeconds, UDateTimePatternMatchOptions options = UDATPG_MATCH_NO_OPTIONS);
-    UnicodeString getBestAppending(int32_t missingFields, UDateTimePatternMatchOptions options = UDATPG_MATCH_NO_OPTIONS);
-    int32_t getTopBitNumber(int32_t foundMask);
-    void setAvailableFormat(const UnicodeString &key, UErrorCode& status);
-    UBool isAvailableFormatSet(const UnicodeString &key) const;
-    void copyHashtable(Hashtable *other, UErrorCode &status);
-    UBool isCanonicalItem(const UnicodeString& item) const;
-} ;// end class DateTimePatternGenerator
-
-U_NAMESPACE_END
-
-#endif