The Tor Browser / file comparison
comparison: intl/uconv/util/umap.c
intl/uconv/util/umap.c
- branch
- TOR_BUG_3246
- changeset 4
- fc2d59ddac77
equal
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| -1:000000000000 | 0:358ce738cd10 |
|---|---|
| 1 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 /* #include "PRIntlpriv.h" */ | |
| 6 #include "unicpriv.h" | |
| 7 | |
| 8 | |
| 9 typedef uint16_t (* MapFormatFunc)(uint16_t in,const uTable *uT,const uMapCell *cell); | |
| 10 typedef int (* HitFormateFunc)(uint16_t in,const uMapCell *cell); | |
| 11 typedef void (* FillInfoFormateFunc)(const uTable *uT, const uMapCell *cell, uint32_t* info); | |
| 12 | |
| 13 | |
| 14 int uHitFormate0(uint16_t in,const uMapCell *cell); | |
| 15 int uHitFormate2(uint16_t in,const uMapCell *cell); | |
| 16 uint16_t uMapFormate0(uint16_t in,const uTable *uT,const uMapCell *cell); | |
| 17 uint16_t uMapFormate1(uint16_t in,const uTable *uT,const uMapCell *cell); | |
| 18 uint16_t uMapFormate2(uint16_t in,const uTable *uT,const uMapCell *cell); | |
| 19 void uFillInfoFormate0(const uTable *uT,const uMapCell *cell,uint32_t* aInfo); | |
| 20 void uFillInfoFormate1(const uTable *uT,const uMapCell *cell,uint32_t* aInfo); | |
| 21 void uFillInfoFormate2(const uTable *uT,const uMapCell *cell,uint32_t* aInfo); | |
| 22 | |
| 23 | |
| 24 const uMapCell *uGetMapCell(const uTable *uT, int16_t item); | |
| 25 char uGetFormat(const uTable *uT, int16_t item); | |
| 26 | |
| 27 | |
| 28 /*================================================================================= | |
| 29 | |
| 30 =================================================================================*/ | |
| 31 const MapFormatFunc m_map[uNumFormatTag] = | |
| 32 { | |
| 33 uMapFormate0, | |
| 34 uMapFormate1, | |
| 35 uMapFormate2, | |
| 36 }; | |
| 37 | |
| 38 /*================================================================================= | |
| 39 | |
| 40 =================================================================================*/ | |
| 41 const FillInfoFormateFunc m_fillinfo[uNumFormatTag] = | |
| 42 { | |
| 43 uFillInfoFormate0, | |
| 44 uFillInfoFormate1, | |
| 45 uFillInfoFormate2, | |
| 46 }; | |
| 47 | |
| 48 /*================================================================================= | |
| 49 | |
| 50 =================================================================================*/ | |
| 51 const HitFormateFunc m_hit[uNumFormatTag] = | |
| 52 { | |
| 53 uHitFormate0, | |
| 54 uHitFormate0, | |
| 55 uHitFormate2, | |
| 56 }; | |
| 57 | |
| 58 #define uHit(format,in,cell) (* m_hit[(format)])((in),(cell)) | |
| 59 #define uMap(format,in,uT,cell) (* m_map[(format)])((in),(uT),(cell)) | |
| 60 #define uGetMapCell(uT, item) ((uMapCell *)(((uint16_t *)uT) + (uT)->offsetToMapCellArray + (item)*(UMAPCELL_SIZE/sizeof(uint16_t)))) | |
| 61 #define uGetFormat(uT, item) (((((uint16_t *)uT) + (uT)->offsetToFormatArray)[(item)>> 2 ] >> (((item)% 4 ) << 2)) & 0x0f) | |
| 62 | |
| 63 /*================================================================================= | |
| 64 | |
| 65 =================================================================================*/ | |
| 66 int uMapCode(const uTable *uT, uint16_t in, uint16_t* out) | |
| 67 { | |
| 68 int done = 0; | |
| 69 uint16_t itemOfList = uT->itemOfList; | |
| 70 uint16_t i; | |
| 71 *out = NOMAPPING; | |
| 72 for(i=0;i<itemOfList;i++) | |
| 73 { | |
| 74 const uMapCell* uCell; | |
| 75 int8_t format = uGetFormat(uT,i); | |
| 76 uCell = uGetMapCell(uT,i); | |
| 77 if(uHit(format, in, uCell)) | |
| 78 { | |
| 79 *out = uMap(format, in, uT,uCell); | |
| 80 done = 1; | |
| 81 break; | |
| 82 } | |
| 83 } | |
| 84 return ( done && (*out != NOMAPPING)); | |
| 85 } | |
| 86 | |
| 87 | |
| 88 /* | |
| 89 member function | |
| 90 */ | |
| 91 /*================================================================================= | |
| 92 | |
| 93 =================================================================================*/ | |
| 94 int uHitFormate0(uint16_t in,const uMapCell *cell) | |
| 95 { | |
| 96 return ( (in >= cell->fmt.format0.srcBegin) && | |
| 97 (in <= cell->fmt.format0.srcEnd) ) ; | |
| 98 } | |
| 99 /*================================================================================= | |
| 100 | |
| 101 =================================================================================*/ | |
| 102 int uHitFormate2(uint16_t in,const uMapCell *cell) | |
| 103 { | |
| 104 return (in == cell->fmt.format2.srcBegin); | |
| 105 } | |
| 106 /*================================================================================= | |
| 107 | |
| 108 =================================================================================*/ | |
| 109 uint16_t uMapFormate0(uint16_t in,const uTable *uT,const uMapCell *cell) | |
| 110 { | |
| 111 return ((in - cell->fmt.format0.srcBegin) + cell->fmt.format0.destBegin); | |
| 112 } | |
| 113 /*================================================================================= | |
| 114 | |
| 115 =================================================================================*/ | |
| 116 uint16_t uMapFormate1(uint16_t in,const uTable *uT,const uMapCell *cell) | |
| 117 { | |
| 118 return (*(((uint16_t *)uT) + uT->offsetToMappingTable | |
| 119 + cell->fmt.format1.mappingOffset + in - cell->fmt.format1.srcBegin)); | |
| 120 } | |
| 121 /*================================================================================= | |
| 122 | |
| 123 =================================================================================*/ | |
| 124 uint16_t uMapFormate2(uint16_t in,const uTable *uT,const uMapCell *cell) | |
| 125 { | |
| 126 return (cell->fmt.format2.destBegin); | |
| 127 } | |
| 128 | |
| 129 #define SET_REPRESENTABLE(info, c) (info)[(c) >> 5] |= (1L << ((c) & 0x1f)) | |
| 130 /*================================================================================= | |
| 131 | |
| 132 =================================================================================*/ | |
| 133 void uFillInfoFormate0(const uTable *uT,const uMapCell *cell,uint32_t* info) | |
| 134 { | |
| 135 uint16_t begin, end, i; | |
| 136 begin = cell->fmt.format0.srcBegin; | |
| 137 end = cell->fmt.format0.srcEnd; | |
| 138 if( (begin >> 5) == (end >> 5)) /* High 17 bits are the same */ | |
| 139 { | |
| 140 for(i = begin; i <= end; i++) | |
| 141 SET_REPRESENTABLE(info, i); | |
| 142 } | |
| 143 else { | |
| 144 uint32_t b = begin >> 5; | |
| 145 uint32_t e = end >> 5; | |
| 146 info[ b ] |= (0xFFFFFFFFL << ((begin) & 0x1f)); | |
| 147 info[ e ] |= (0xFFFFFFFFL >> (31 - ((end) & 0x1f))); | |
| 148 for(b++ ; b < e ; b++) | |
| 149 info[b] |= 0xFFFFFFFFL; | |
| 150 } | |
| 151 } | |
| 152 /*================================================================================= | |
| 153 | |
| 154 =================================================================================*/ | |
| 155 void uFillInfoFormate1(const uTable *uT,const uMapCell *cell,uint32_t* info) | |
| 156 { | |
| 157 uint16_t begin, end, i; | |
| 158 uint16_t *base; | |
| 159 begin = cell->fmt.format0.srcBegin; | |
| 160 end = cell->fmt.format0.srcEnd; | |
| 161 base = (((uint16_t *)uT) + uT->offsetToMappingTable + cell->fmt.format1.mappingOffset); | |
| 162 for(i = begin; i <= end; i++) | |
| 163 { | |
| 164 if(0xFFFD != base[i - begin]) /* check every item */ | |
| 165 SET_REPRESENTABLE(info, i); | |
| 166 } | |
| 167 } | |
| 168 /*================================================================================= | |
| 169 | |
| 170 =================================================================================*/ | |
| 171 void uFillInfoFormate2(const uTable *uT,const uMapCell *cell,uint32_t* info) | |
| 172 { | |
| 173 SET_REPRESENTABLE(info, cell->fmt.format2.srcBegin); | |
| 174 } | |
| 175 |
