| /* |
| ******************************************************************************* |
| * |
| * Copyright (C) 2004-2008, 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" |
| |
| #define UBIDI_HARDCODE_DATA 1 |
| |
| 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); |
| |
| #if !UBIDI_HARDCODE_DATA |
| /** |
| * 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); |
| #endif |
| |
| 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 |