/*
     File:       UnicodeUtilities.h
 
     Contains:   Types, constants, prototypes for Unicode Utilities (Unicode input and text utils)
 
     Version:    QuickTime 7.3
 
     Copyright:  (c) 2007 (c) 1997-2001 by Apple Computer, Inc., all rights reserved.
 
     Bugs?:      For bug reports, consult the following page on
                 the World Wide Web:
 
                     http://developer.apple.com/bugreporter/
 
*/
#ifndef __UNICODEUTILITIES__
#define __UNICODEUTILITIES__

#ifndef __MACTYPES__
#include "MacTypes.h"
#endif


#ifndef __MACLOCALES__
#include "MacLocales.h"
#endif

#ifndef __TEXTCOMMON__
#include "TextCommon.h"
#endif



#if PRAGMA_ONCE
#pragma once
#endif

#ifdef __cplusplus
extern "C" {
#endif

#if PRAGMA_IMPORT
#pragma import on
#endif

#if PRAGMA_STRUCT_ALIGN
    #pragma options align=mac68k
#elif PRAGMA_STRUCT_PACKPUSH
    #pragma pack(push, 2)
#elif PRAGMA_STRUCT_PACK
    #pragma pack(2)
#endif

/*
   -------------------------------------------------------------------------------------------------
   CONSTANTS & DATA STRUCTURES for UCKeyTranslate & UCKeyboardLayout ('uchr' resource)
   -------------------------------------------------------------------------------------------------
*/

/*
   -------------------------------------------------------------------------------------------------
   UCKeyOutput & related stuff
   The interpretation of UCKeyOutput depends on bits 15-14.
   If they are 01, then bits 0-13 are an index in UCKeyStateRecordsIndex (resource-wide list).
   If they are 10, then bits 0-13 are an index in UCKeySequenceDataIndex (resource-wide list),
     or if UCKeySequenceDataIndex is not present or the index is beyond the end of the list,
     then bits 0-15 are a single Unicode character.
   Otherwise, bits 0-15 are a single Unicode character; a value of 0xFFFE-0xFFFF means no character
     output.
   UCKeyCharSeq is similar, but does not support indices in UCKeyStateRecordsIndex. For bits 15-14:
   If they are 10, then bits 0-13 are an index in UCKeySequenceDataIndex (resource-wide list),
     or if UCKeySequenceDataIndex is not present or the index is beyond the end of the list,
     then bits 0-15 are a single Unicode character.
   Otherwise, bits 0-15 are a single Unicode character; a value of 0xFFFE-0xFFFF means no character
     output.
   -------------------------------------------------------------------------------------------------
*/

typedef UInt16                          UCKeyOutput;
typedef UInt16                          UCKeyCharSeq;
enum {
  kUCKeyOutputStateIndexMask    = 0x4000,
  kUCKeyOutputSequenceIndexMask = 0x8000,
  kUCKeyOutputTestForIndexMask  = 0xC000, /* test bits 14-15*/
  kUCKeyOutputGetIndexMask      = 0x3FFF /* get bits 0-13*/
};

/*
   -------------------------------------------------------------------------------------------------
   UCKeyStateRecord & related stuff
   The UCKeyStateRecord information is used as follows. If the current state is zero,
   output stateZeroCharData and set the state to stateZeroNextState. If the current state
   is non-zero and there is an entry for it in stateEntryData, then output the corresponding
   charData and set the state to nextState. Otherwise, output the state terminator from
   UCKeyStateTerminators for the current state (or nothing if there is no UCKeyStateTerminators
   table or it has no entry for the current state), then output stateZeroCharData and set the
   state to stateZeroNextState.
   -------------------------------------------------------------------------------------------------
*/

struct UCKeyStateRecord {
  UCKeyCharSeq        stateZeroCharData;
  UInt16              stateZeroNextState;
  UInt16              stateEntryCount;
  UInt16              stateEntryFormat;
                                              /* This is followed by an array of stateEntryCount elements*/
                                              /* in the specified format. Here we just show a dummy array.*/
  UInt32              stateEntryData[1];
};
typedef struct UCKeyStateRecord         UCKeyStateRecord;
/*
   Here are the codes for entry formats currently defined.
   Each entry maps from curState to charData and nextState.
*/
enum {
  kUCKeyStateEntryTerminalFormat = 0x0001,
  kUCKeyStateEntryRangeFormat   = 0x0002
};

/*
   For UCKeyStateEntryTerminal -
   nextState is always 0, so we don't have a field for it
*/

struct UCKeyStateEntryTerminal {
  UInt16              curState;
  UCKeyCharSeq        charData;
};
typedef struct UCKeyStateEntryTerminal  UCKeyStateEntryTerminal;
/*
   For UCKeyStateEntryRange -
   If curState >= curStateStart and curState <= curStateStart+curStateRange,
   then it matches the entry, and we transform charData and nextState as follows:
   If charData < 0xFFFE, then charData += (curState-curStateStart)*deltaMultiplier
   If nextState != 0, then nextState += (curState-curStateStart)*deltaMultiplier
*/
struct UCKeyStateEntryRange {
  UInt16              curStateStart;
  UInt8               curStateRange;
  UInt8               deltaMultiplier;
  UCKeyCharSeq        charData;
  UInt16              nextState;
};
typedef struct UCKeyStateEntryRange     UCKeyStateEntryRange;
/*
   -------------------------------------------------------------------------------------------------
   UCKeyboardLayout & related stuff
   The UCKeyboardLayout struct given here is only for the resource header. It specifies
   offsets to the various subtables which each have their own structs, given below.
   The keyboardTypeHeadList array selects table offsets that depend on keyboardType. The
   first entry in keyboardTypeHeadList is the default entry, which will be used if the
   keyboardType passed to UCKeyTranslate does not match any other entry - i.e. does not fall
   within the range keyboardTypeFirst..keyboardTypeLast for some entry. The first entry
   should have keyboardTypeFirst = keyboardTypeLast = 0.
   -------------------------------------------------------------------------------------------------
*/
struct UCKeyboardTypeHeader {
  UInt32              keyboardTypeFirst;      /* first keyboardType in this entry*/
  UInt32              keyboardTypeLast;       /* last keyboardType in this entry*/
  ByteOffset          keyModifiersToTableNumOffset; /* required*/
  ByteOffset          keyToCharTableIndexOffset; /* required*/
  ByteOffset          keyStateRecordsIndexOffset; /* 0 => no table*/
  ByteOffset          keyStateTerminatorsOffset; /* 0 => no table*/
  ByteOffset          keySequenceDataIndexOffset; /* 0 => no table*/
};
typedef struct UCKeyboardTypeHeader     UCKeyboardTypeHeader;
struct UCKeyboardLayout {
                                              /* header only; other tables accessed via offsets*/
  UInt16              keyLayoutHeaderFormat;  /* =kUCKeyLayoutHeaderFormat*/
  UInt16              keyLayoutDataVersion;   /* 0x0100 = 1.0, 0x0110 = 1.1, etc.*/
  ByteOffset          keyLayoutFeatureInfoOffset; /* may be 0                       */
  ItemCount           keyboardTypeCount;      /* Dimension for keyboardTypeHeadList[]     */
  UCKeyboardTypeHeader  keyboardTypeList[1];
};
typedef struct UCKeyboardLayout         UCKeyboardLayout;
/* -------------------------------------------------------------------------------------------------*/
struct UCKeyLayoutFeatureInfo {
  UInt16              keyLayoutFeatureInfoFormat; /* =kUCKeyLayoutFeatureInfoFormat*/
  UInt16              reserved;
  UniCharCount        maxOutputStringLength;  /* longest possible output string*/
};
typedef struct UCKeyLayoutFeatureInfo   UCKeyLayoutFeatureInfo;
/* -------------------------------------------------------------------------------------------------*/
struct UCKeyModifiersToTableNum {
  UInt16              keyModifiersToTableNumFormat; /* =kUCKeyModifiersToTableNumFormat*/
  UInt16              defaultTableNum;        /* For modifier combos not in tableNum[]*/
  ItemCount           modifiersCount;         /* Dimension for tableNum[]*/
  UInt8               tableNum[1];

                                              /* Then there is padding to a 4-byte boundary with bytes containing 0, if necessary.*/
};
typedef struct UCKeyModifiersToTableNum UCKeyModifiersToTableNum;
/* -------------------------------------------------------------------------------------------------*/
struct UCKeyToCharTableIndex {
  UInt16              keyToCharTableIndexFormat; /* =kUCKeyToCharTableIndexFormat*/
  UInt16              keyToCharTableSize;     /* Max keyCode (128 for ADB keyboards)*/
  ItemCount           keyToCharTableCount;    /* Dimension for keyToCharTableOffsets[] (usually 6 to 12 tables)*/
  ByteOffset          keyToCharTableOffsets[1];

                                              /* Each offset in keyToCharTableOffsets is from the beginning of the resource to a*/
                                              /* table as follows:*/
                                              /*    UCKeyOutput       keyToCharData[keyToCharTableSize];*/
                                              /* These tables follow the UCKeyToCharTableIndex.*/
                                              /* Then there is padding to a 4-byte boundary with bytes containing 0, if necessary.*/
};
typedef struct UCKeyToCharTableIndex    UCKeyToCharTableIndex;
/* -------------------------------------------------------------------------------------------------*/
struct UCKeyStateRecordsIndex {
  UInt16              keyStateRecordsIndexFormat; /* =kUCKeyStateRecordsIndexFormat*/
  UInt16              keyStateRecordCount;    /* Dimension for keyStateRecordOffsets[]*/
  ByteOffset          keyStateRecordOffsets[1];

                                              /* Each offset in keyStateRecordOffsets is from the beginning of the resource to a*/
                                              /* UCKeyStateRecord. These UCKeyStateRecords follow the keyStateRecordOffsets[] array.*/
                                              /* Then there is padding to a 4-byte boundary with bytes containing 0, if necessary.*/
};
typedef struct UCKeyStateRecordsIndex   UCKeyStateRecordsIndex;
/* -------------------------------------------------------------------------------------------------*/
struct UCKeyStateTerminators {
  UInt16              keyStateTerminatorsFormat; /* =kUCKeyStateTerminatorsFormat*/
  UInt16              keyStateTerminatorCount; /* Dimension for keyStateTerminators[] (# of nonzero states)*/
  UCKeyCharSeq        keyStateTerminators[1];

                                              /* Note: keyStateTerminators[0] is terminator for state 1, etc.*/
                                              /* Then there is padding to a 4-byte boundary with bytes containing 0, if necessary.*/
};
typedef struct UCKeyStateTerminators    UCKeyStateTerminators;
/* -------------------------------------------------------------------------------------------------*/
struct UCKeySequenceDataIndex {
  UInt16              keySequenceDataIndexFormat; /* =kUCKeySequenceDataIndexFormat*/
  UInt16              charSequenceCount;      /* Dimension of charSequenceOffsets[] is charSequenceCount+1*/
  UInt16              charSequenceOffsets[1];

                                              /* Each offset in charSequenceOffsets is in bytes, from the beginning of*/
                                              /* UCKeySequenceDataIndex to a sequence of UniChars; the next offset indicates the*/
                                              /* end of the sequence. The UniChar sequences follow the UCKeySequenceDataIndex.*/
                                              /* Then there is padding to a 4-byte boundary with bytes containing 0, if necessary.*/
};
typedef struct UCKeySequenceDataIndex   UCKeySequenceDataIndex;
/* -------------------------------------------------------------------------------------------------*/
/* Current format codes for the various tables (bits 12-15 indicate which table)*/

enum {
  kUCKeyLayoutHeaderFormat      = 0x1002,
  kUCKeyLayoutFeatureInfoFormat = 0x2001,
  kUCKeyModifiersToTableNumFormat = 0x3001,
  kUCKeyToCharTableIndexFormat  = 0x4001,
  kUCKeyStateRecordsIndexFormat = 0x5001,
  kUCKeyStateTerminatorsFormat  = 0x6001,
  kUCKeySequenceDataIndexFormat = 0x7001
};


/*
   -------------------------------------------------------------------------------------------------
   Constants for keyAction parameter in UCKeyTranslate() 
   -------------------------------------------------------------------------------------------------
*/

enum {
  kUCKeyActionDown              = 0,    /* key is going down*/
  kUCKeyActionUp                = 1,    /* key is going up*/
  kUCKeyActionAutoKey           = 2,    /* auto-key down*/
  kUCKeyActionDisplay           = 3     /* get information for key display (as in Key Caps)      */
};

/*
   -------------------------------------------------------------------------------------------------
   Bit assignments & masks for keyTranslateOptions parameter in UCKeyTranslate() 
   -------------------------------------------------------------------------------------------------
*/

enum {
  kUCKeyTranslateNoDeadKeysBit  = 0     /* Prevents setting any new dead-key states*/
};

enum {
  kUCKeyTranslateNoDeadKeysMask = 1L << kUCKeyTranslateNoDeadKeysBit
};

/*
   -------------------------------------------------------------------------------------------------
   CONSTANTS & DATA STRUCTURES for Unicode Collation
   -------------------------------------------------------------------------------------------------
*/
/* constant for LocaleOperationClass*/
enum {
  kUnicodeCollationClass        = FOUR_CHAR_CODE('ucol')
};

typedef struct OpaqueCollatorRef*       CollatorRef;
typedef UInt32 UCCollateOptions;
enum {
                                        /* Sensitivity options*/
  kUCCollateComposeInsensitiveMask = 1L << 1,
  kUCCollateWidthInsensitiveMask = 1L << 2,
  kUCCollateCaseInsensitiveMask = 1L << 3,
  kUCCollateDiacritInsensitiveMask = 1L << 4, /* Other general options */
  kUCCollatePunctuationSignificantMask = 1L << 15, /* Number-handling options */
  kUCCollateDigitsOverrideMask  = 1L << 16,
  kUCCollateDigitsAsNumberMask  = 1L << 17
};

enum {
  kUCCollateStandardOptions     = kUCCollateComposeInsensitiveMask | kUCCollateWidthInsensitiveMask
};

/*
   Special values to specify various invariant orders for UCCompareTextNoLocale.
   These values use the high 8 bits of UCCollateOptions.
*/
enum {
  kUCCollateTypeHFSExtended     = 1
};

/* These constants are used for masking and shifting the invariant order type.*/
enum {
  kUCCollateTypeSourceMask      = 0x000000FF,
  kUCCollateTypeShiftBits       = 24
};

enum {
  kUCCollateTypeMask            = kUCCollateTypeSourceMask << kUCCollateTypeShiftBits
};


typedef UInt32                          UCCollationValue;
/*
   -------------------------------------------------------------------------------------------------
   CONSTANTS & DATA STRUCTURES for Unicode TextBreak
   -------------------------------------------------------------------------------------------------
*/
/* constant for LocaleOperationClass*/
enum {
  kUnicodeTextBreakClass        = FOUR_CHAR_CODE('ubrk')
};

typedef struct OpaqueTextBreakLocatorRef*  TextBreakLocatorRef;
typedef UInt32 UCTextBreakType;
enum {
  kUCTextBreakCharMask          = 1L << 0,
  kUCTextBreakClusterMask       = 1L << 2,
  kUCTextBreakWordMask          = 1L << 4,
  kUCTextBreakLineMask          = 1L << 6
};

typedef UInt32 UCTextBreakOptions;
enum {
  kUCTextBreakLeadingEdgeMask   = 1L << 0,
  kUCTextBreakGoBackwardsMask   = 1L << 1,
  kUCTextBreakIterateMask       = 1L << 2
};

/*
   -------------------------------------------------------------------------------------------------
   FUNCTION PROTOTYPES
   -------------------------------------------------------------------------------------------------
*/

/*
 *  UCKeyTranslate()
 *  
 *  Availability:
 *    Non-Carbon CFM:   in UnicodeUtilitiesCoreLib 8.5 and later
 *    CarbonLib:        in CarbonLib 1.0 and later
 *    Mac OS X:         in version 10.0 and later
 */
EXTERN_API( OSStatus )
UCKeyTranslate(
  const UCKeyboardLayout *  keyLayoutPtr,
  UInt16                    virtualKeyCode,
  UInt16                    keyAction,
  UInt32                    modifierKeyState,
  UInt32                    keyboardType,
  OptionBits                keyTranslateOptions,
  UInt32 *                  deadKeyState,
  UniCharCount              maxStringLength,
  UniCharCount *            actualStringLength,
  UniChar                   unicodeString[]);


/* Standard collation functions*/
/*
 *  UCCreateCollator()
 *  
 *  Availability:
 *    Non-Carbon CFM:   in UnicodeUtilitiesLib 8.6 and later
 *    CarbonLib:        in CarbonLib 1.0 and later
 *    Mac OS X:         in version 10.0 and later
 */
EXTERN_API_C( OSStatus )
UCCreateCollator(
  LocaleRef                locale,
  LocaleOperationVariant   opVariant,
  UCCollateOptions         options,
  CollatorRef *            collatorRef);


/*
 *  UCGetCollationKey()
 *  
 *  Availability:
 *    Non-Carbon CFM:   in UnicodeUtilitiesLib 8.6 and later
 *    CarbonLib:        in CarbonLib 1.0 and later
 *    Mac OS X:         in version 10.0 and later
 */
EXTERN_API_C( OSStatus )
UCGetCollationKey(
  CollatorRef        collatorRef,
  const UniChar *    textPtr,
  UniCharCount       textLength,
  ItemCount          maxKeySize,
  ItemCount *        actualKeySize,
  UCCollationValue   collationKey[]);


/*
 *  UCCompareCollationKeys()
 *  
 *  Availability:
 *    Non-Carbon CFM:   in UnicodeUtilitiesCoreLib 8.6 and later
 *    CarbonLib:        in CarbonLib 1.0 and later
 *    Mac OS X:         in version 10.0 and later
 */
EXTERN_API_C( OSStatus )
UCCompareCollationKeys(
  const UCCollationValue *  key1Ptr,
  ItemCount                 key1Length,
  const UCCollationValue *  key2Ptr,
  ItemCount                 key2Length,
  Boolean *                 equivalent,
  SInt32 *                  order);


/*
 *  UCCompareText()
 *  
 *  Availability:
 *    Non-Carbon CFM:   in UnicodeUtilitiesLib 8.6 and later
 *    CarbonLib:        in CarbonLib 1.0 and later
 *    Mac OS X:         in version 10.0 and later
 */
EXTERN_API_C( OSStatus )
UCCompareText(
  CollatorRef      collatorRef,
  const UniChar *  text1Ptr,
  UniCharCount     text1Length,
  const UniChar *  text2Ptr,
  UniCharCount     text2Length,
  Boolean *        equivalent,
  SInt32 *         order);


/*
 *  UCDisposeCollator()
 *  
 *  Availability:
 *    Non-Carbon CFM:   in UnicodeUtilitiesLib 8.6 and later
 *    CarbonLib:        in CarbonLib 1.0 and later
 *    Mac OS X:         in version 10.0 and later
 */
EXTERN_API_C( OSStatus )
UCDisposeCollator(CollatorRef * collatorRef);


/* Simple collation using default locale*/

/*
 *  UCCompareTextDefault()
 *  
 *  Availability:
 *    Non-Carbon CFM:   in UnicodeUtilitiesLib 8.6 and later
 *    CarbonLib:        in CarbonLib 1.0 and later
 *    Mac OS X:         in version 10.0 and later
 */
EXTERN_API_C( OSStatus )
UCCompareTextDefault(
  UCCollateOptions   options,
  const UniChar *    text1Ptr,
  UniCharCount       text1Length,
  const UniChar *    text2Ptr,
  UniCharCount       text2Length,
  Boolean *          equivalent,
  SInt32 *           order);



/* Simple locale-independent collation*/

/*
 *  UCCompareTextNoLocale()
 *  
 *  Availability:
 *    Non-Carbon CFM:   in UnicodeUtilitiesCoreLib 8.6 and later
 *    CarbonLib:        in CarbonLib 1.0 and later
 *    Mac OS X:         in version 10.0 and later
 */
EXTERN_API_C( OSStatus )
UCCompareTextNoLocale(
  UCCollateOptions   options,
  const UniChar *    text1Ptr,
  UniCharCount       text1Length,
  const UniChar *    text2Ptr,
  UniCharCount       text2Length,
  Boolean *          equivalent,
  SInt32 *           order);


/* Standard text break (text boundary) functions*/
/*
 *  UCCreateTextBreakLocator()
 *  
 *  Availability:
 *    Non-Carbon CFM:   in UnicodeUtilitiesLib 9.0 and later
 *    CarbonLib:        in CarbonLib 1.0 and later
 *    Mac OS X:         in version 10.0 and later
 */
EXTERN_API_C( OSStatus )
UCCreateTextBreakLocator(
  LocaleRef                locale,
  LocaleOperationVariant   opVariant,
  UCTextBreakType          breakTypes,
  TextBreakLocatorRef *    breakRef);


/*
 *  UCFindTextBreak()
 *  
 *  Availability:
 *    Non-Carbon CFM:   in UnicodeUtilitiesLib 9.0 and later
 *    CarbonLib:        in CarbonLib 1.0 and later
 *    Mac OS X:         in version 10.0 and later
 */
EXTERN_API_C( OSStatus )
UCFindTextBreak(
  TextBreakLocatorRef   breakRef,
  UCTextBreakType       breakType,
  UCTextBreakOptions    options,
  const UniChar *       textPtr,
  UniCharCount          textLength,
  UniCharArrayOffset    startOffset,
  UniCharArrayOffset *  breakOffset);


/*
 *  UCDisposeTextBreakLocator()
 *  
 *  Availability:
 *    Non-Carbon CFM:   in UnicodeUtilitiesLib 9.0 and later
 *    CarbonLib:        in CarbonLib 1.0 and later
 *    Mac OS X:         in version 10.0 and later
 */
EXTERN_API_C( OSStatus )
UCDisposeTextBreakLocator(TextBreakLocatorRef * breakRef);



#if PRAGMA_STRUCT_ALIGN
    #pragma options align=reset
#elif PRAGMA_STRUCT_PACKPUSH
    #pragma pack(pop)
#elif PRAGMA_STRUCT_PACK
    #pragma pack()
#endif

#ifdef PRAGMA_IMPORT_OFF
#pragma import off
#elif PRAGMA_IMPORT
#pragma import reset
#endif

#ifdef __cplusplus
}
#endif

#endif /* __UNICODEUTILITIES__ */

