161 lines
4.0 KiB
C
161 lines
4.0 KiB
C
/*
|
|
*******************************************************************************
|
|
*
|
|
* Copyright (C) 2004-2007, International Business Machines
|
|
* Corporation and others. All Rights Reserved.
|
|
*
|
|
*******************************************************************************
|
|
* file name: ubidi_props.h
|
|
* encoding: US-ASCII
|
|
* tab size: 8 (not used)
|
|
* indentation:4
|
|
*
|
|
* created on: 2004dec30
|
|
* created by: Markus W. Scherer
|
|
*
|
|
* Low-level Unicode bidi/shaping properties access.
|
|
*/
|
|
|
|
#ifndef __UBIDI_PROPS_H__
|
|
#define __UBIDI_PROPS_H__
|
|
|
|
#include "unicode/utypes.h"
|
|
#include "unicode/uset.h"
|
|
#include "uset_imp.h"
|
|
#include "udataswp.h"
|
|
|
|
U_CDECL_BEGIN
|
|
|
|
/* library API -------------------------------------------------------------- */
|
|
|
|
struct UBiDiProps;
|
|
typedef struct UBiDiProps UBiDiProps;
|
|
|
|
U_CFUNC UBiDiProps *
|
|
ubidi_openProps(UErrorCode *pErrorCode);
|
|
|
|
U_CFUNC UBiDiProps *
|
|
ubidi_openBinary(const uint8_t *bin, int32_t length, UErrorCode *pErrorCode);
|
|
|
|
U_CFUNC void
|
|
ubidi_closeProps(UBiDiProps *bdp);
|
|
|
|
|
|
U_CFUNC const UBiDiProps *
|
|
ubidi_getSingleton(UErrorCode *pErrorCode);
|
|
|
|
/**
|
|
* Get a singleton dummy object, one that works with no real data.
|
|
* This can be used when the real data is not available.
|
|
* Using the dummy can reduce checks for available data after an initial failure.
|
|
*/
|
|
U_CAPI const UBiDiProps *
|
|
ubidi_getDummy(UErrorCode *pErrorCode);
|
|
|
|
|
|
U_CAPI int32_t
|
|
ubidi_swap(const UDataSwapper *ds,
|
|
const void *inData, int32_t length, void *outData,
|
|
UErrorCode *pErrorCode);
|
|
|
|
U_CFUNC void
|
|
ubidi_addPropertyStarts(const UBiDiProps *bdp, const USetAdder *sa, UErrorCode *pErrorCode);
|
|
|
|
/* property access functions */
|
|
|
|
U_CFUNC int32_t
|
|
ubidi_getMaxValue(const UBiDiProps *bdp, UProperty which);
|
|
|
|
U_CAPI UCharDirection
|
|
ubidi_getClass(const UBiDiProps *bdp, UChar32 c);
|
|
|
|
U_CFUNC UBool
|
|
ubidi_isMirrored(const UBiDiProps *bdp, UChar32 c);
|
|
|
|
U_CFUNC UChar32
|
|
ubidi_getMirror(const UBiDiProps *bdp, UChar32 c);
|
|
|
|
U_CFUNC UBool
|
|
ubidi_isBidiControl(const UBiDiProps *bdp, UChar32 c);
|
|
|
|
U_CFUNC UBool
|
|
ubidi_isJoinControl(const UBiDiProps *bdp, UChar32 c);
|
|
|
|
U_CFUNC UJoiningType
|
|
ubidi_getJoiningType(const UBiDiProps *bdp, UChar32 c);
|
|
|
|
U_CFUNC UJoiningGroup
|
|
ubidi_getJoiningGroup(const UBiDiProps *bdp, UChar32 c);
|
|
|
|
/* file definitions --------------------------------------------------------- */
|
|
|
|
#define UBIDI_DATA_NAME "ubidi"
|
|
#define UBIDI_DATA_TYPE "icu"
|
|
|
|
/* format "BiDi" */
|
|
#define UBIDI_FMT_0 0x42
|
|
#define UBIDI_FMT_1 0x69
|
|
#define UBIDI_FMT_2 0x44
|
|
#define UBIDI_FMT_3 0x69
|
|
|
|
/* indexes into indexes[] */
|
|
enum {
|
|
UBIDI_IX_INDEX_TOP,
|
|
UBIDI_IX_LENGTH,
|
|
UBIDI_IX_TRIE_SIZE,
|
|
UBIDI_IX_MIRROR_LENGTH,
|
|
|
|
UBIDI_IX_JG_START,
|
|
UBIDI_IX_JG_LIMIT,
|
|
|
|
UBIDI_MAX_VALUES_INDEX=15,
|
|
UBIDI_IX_TOP=16
|
|
};
|
|
|
|
/* definitions for 16-bit bidi/shaping properties word ---------------------- */
|
|
|
|
enum {
|
|
/* UBIDI_CLASS_SHIFT=0, */ /* bidi class: 5 bits (4..0) */
|
|
UBIDI_JT_SHIFT=5, /* joining type: 3 bits (7..5) */
|
|
|
|
/* UBIDI__SHIFT=8, reserved: 2 bits (9..8) */
|
|
|
|
UBIDI_JOIN_CONTROL_SHIFT=10,
|
|
UBIDI_BIDI_CONTROL_SHIFT=11,
|
|
|
|
UBIDI_IS_MIRRORED_SHIFT=12, /* 'is mirrored' */
|
|
UBIDI_MIRROR_DELTA_SHIFT=13, /* bidi mirroring delta: 3 bits (15..13) */
|
|
|
|
UBIDI_MAX_JG_SHIFT=16 /* max JG value in indexes[UBIDI_MAX_VALUES_INDEX] bits 23..16 */
|
|
};
|
|
|
|
#define UBIDI_CLASS_MASK 0x0000001f
|
|
#define UBIDI_JT_MASK 0x000000e0
|
|
|
|
#define UBIDI_MAX_JG_MASK 0x00ff0000
|
|
|
|
#define UBIDI_GET_CLASS(props) ((props)&UBIDI_CLASS_MASK)
|
|
#define UBIDI_GET_FLAG(props, shift) (((props)>>(shift))&1)
|
|
|
|
enum {
|
|
UBIDI_ESC_MIRROR_DELTA=-4,
|
|
UBIDI_MIN_MIRROR_DELTA=-3,
|
|
UBIDI_MAX_MIRROR_DELTA=3
|
|
};
|
|
|
|
/* definitions for 32-bit mirror table entry -------------------------------- */
|
|
|
|
enum {
|
|
/* the source Unicode code point takes 21 bits (20..0) */
|
|
UBIDI_MIRROR_INDEX_SHIFT=21,
|
|
UBIDI_MAX_MIRROR_INDEX=0x7ff
|
|
};
|
|
|
|
#define UBIDI_GET_MIRROR_CODE_POINT(m) (UChar32)((m)&0x1fffff)
|
|
|
|
#define UBIDI_GET_MIRROR_INDEX(m) ((m)>>UBIDI_MIRROR_INDEX_SHIFT)
|
|
|
|
U_CDECL_END
|
|
|
|
#endif
|