1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/intl/icu/source/common/ubidi_props.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,150 @@
1.4 +/*
1.5 +*******************************************************************************
1.6 +*
1.7 +* Copyright (C) 2004-2013, International Business Machines
1.8 +* Corporation and others. All Rights Reserved.
1.9 +*
1.10 +*******************************************************************************
1.11 +* file name: ubidi_props.h
1.12 +* encoding: US-ASCII
1.13 +* tab size: 8 (not used)
1.14 +* indentation:4
1.15 +*
1.16 +* created on: 2004dec30
1.17 +* created by: Markus W. Scherer
1.18 +*
1.19 +* Low-level Unicode bidi/shaping properties access.
1.20 +*/
1.21 +
1.22 +#ifndef __UBIDI_PROPS_H__
1.23 +#define __UBIDI_PROPS_H__
1.24 +
1.25 +#include "unicode/utypes.h"
1.26 +#include "unicode/uset.h"
1.27 +#include "putilimp.h"
1.28 +#include "uset_imp.h"
1.29 +#include "udataswp.h"
1.30 +
1.31 +U_CDECL_BEGIN
1.32 +
1.33 +/* library API -------------------------------------------------------------- */
1.34 +
1.35 +struct UBiDiProps;
1.36 +typedef struct UBiDiProps UBiDiProps;
1.37 +
1.38 +U_CFUNC const UBiDiProps *
1.39 +ubidi_getSingleton(void);
1.40 +
1.41 +U_CFUNC void
1.42 +ubidi_addPropertyStarts(const UBiDiProps *bdp, const USetAdder *sa, UErrorCode *pErrorCode);
1.43 +
1.44 +/* property access functions */
1.45 +
1.46 +U_CFUNC int32_t
1.47 +ubidi_getMaxValue(const UBiDiProps *bdp, UProperty which);
1.48 +
1.49 +U_CAPI UCharDirection
1.50 +ubidi_getClass(const UBiDiProps *bdp, UChar32 c);
1.51 +
1.52 +U_CFUNC UBool
1.53 +ubidi_isMirrored(const UBiDiProps *bdp, UChar32 c);
1.54 +
1.55 +U_CFUNC UChar32
1.56 +ubidi_getMirror(const UBiDiProps *bdp, UChar32 c);
1.57 +
1.58 +U_CFUNC UBool
1.59 +ubidi_isBidiControl(const UBiDiProps *bdp, UChar32 c);
1.60 +
1.61 +U_CFUNC UBool
1.62 +ubidi_isJoinControl(const UBiDiProps *bdp, UChar32 c);
1.63 +
1.64 +U_CFUNC UJoiningType
1.65 +ubidi_getJoiningType(const UBiDiProps *bdp, UChar32 c);
1.66 +
1.67 +U_CFUNC UJoiningGroup
1.68 +ubidi_getJoiningGroup(const UBiDiProps *bdp, UChar32 c);
1.69 +
1.70 +U_CFUNC UBidiPairedBracketType
1.71 +ubidi_getPairedBracketType(const UBiDiProps *bdp, UChar32 c);
1.72 +
1.73 +U_CFUNC UChar32
1.74 +ubidi_getPairedBracket(const UBiDiProps *bdp, UChar32 c);
1.75 +
1.76 +/* file definitions --------------------------------------------------------- */
1.77 +
1.78 +#define UBIDI_DATA_NAME "ubidi"
1.79 +#define UBIDI_DATA_TYPE "icu"
1.80 +
1.81 +/* format "BiDi" */
1.82 +#define UBIDI_FMT_0 0x42
1.83 +#define UBIDI_FMT_1 0x69
1.84 +#define UBIDI_FMT_2 0x44
1.85 +#define UBIDI_FMT_3 0x69
1.86 +
1.87 +/* indexes into indexes[] */
1.88 +enum {
1.89 + UBIDI_IX_INDEX_TOP,
1.90 + UBIDI_IX_LENGTH,
1.91 + UBIDI_IX_TRIE_SIZE,
1.92 + UBIDI_IX_MIRROR_LENGTH,
1.93 +
1.94 + UBIDI_IX_JG_START,
1.95 + UBIDI_IX_JG_LIMIT,
1.96 +
1.97 + UBIDI_MAX_VALUES_INDEX=15,
1.98 + UBIDI_IX_TOP=16
1.99 +};
1.100 +
1.101 +/* definitions for 16-bit bidi/shaping properties word ---------------------- */
1.102 +
1.103 +enum {
1.104 + /* UBIDI_CLASS_SHIFT=0, */ /* bidi class: 5 bits (4..0) */
1.105 + UBIDI_JT_SHIFT=5, /* joining type: 3 bits (7..5) */
1.106 +
1.107 + UBIDI_BPT_SHIFT=8, /* Bidi_Paired_Bracket_Type(bpt): 2 bits (9..8) */
1.108 +
1.109 + UBIDI_JOIN_CONTROL_SHIFT=10,
1.110 + UBIDI_BIDI_CONTROL_SHIFT=11,
1.111 +
1.112 + UBIDI_IS_MIRRORED_SHIFT=12, /* 'is mirrored' */
1.113 + UBIDI_MIRROR_DELTA_SHIFT=13, /* bidi mirroring delta: 3 bits (15..13) */
1.114 +
1.115 + UBIDI_MAX_JG_SHIFT=16 /* max JG value in indexes[UBIDI_MAX_VALUES_INDEX] bits 23..16 */
1.116 +};
1.117 +
1.118 +#define UBIDI_CLASS_MASK 0x0000001f
1.119 +#define UBIDI_JT_MASK 0x000000e0
1.120 +#define UBIDI_BPT_MASK 0x00000300
1.121 +
1.122 +#define UBIDI_MAX_JG_MASK 0x00ff0000
1.123 +
1.124 +#define UBIDI_GET_CLASS(props) ((props)&UBIDI_CLASS_MASK)
1.125 +#define UBIDI_GET_FLAG(props, shift) (((props)>>(shift))&1)
1.126 +
1.127 +#if U_SIGNED_RIGHT_SHIFT_IS_ARITHMETIC
1.128 +# define UBIDI_GET_MIRROR_DELTA(props) ((int16_t)(props)>>UBIDI_MIRROR_DELTA_SHIFT)
1.129 +#else
1.130 +# define UBIDI_GET_MIRROR_DELTA(props) (int16_t)(((props)&0x8000) ? (((props)>>UBIDI_MIRROR_DELTA_SHIFT)|0xe000) : ((props)>>UBIDI_MIRROR_DELTA_SHIFT))
1.131 +#endif
1.132 +
1.133 +enum {
1.134 + UBIDI_ESC_MIRROR_DELTA=-4,
1.135 + UBIDI_MIN_MIRROR_DELTA=-3,
1.136 + UBIDI_MAX_MIRROR_DELTA=3
1.137 +};
1.138 +
1.139 +/* definitions for 32-bit mirror table entry -------------------------------- */
1.140 +
1.141 +enum {
1.142 + /* the source Unicode code point takes 21 bits (20..0) */
1.143 + UBIDI_MIRROR_INDEX_SHIFT=21,
1.144 + UBIDI_MAX_MIRROR_INDEX=0x7ff
1.145 +};
1.146 +
1.147 +#define UBIDI_GET_MIRROR_CODE_POINT(m) (UChar32)((m)&0x1fffff)
1.148 +
1.149 +#define UBIDI_GET_MIRROR_INDEX(m) ((m)>>UBIDI_MIRROR_INDEX_SHIFT)
1.150 +
1.151 +U_CDECL_END
1.152 +
1.153 +#endif
