diff options
Diffstat (limited to 'intl/uconv/util/umap.c')
| -rw-r--r-- | intl/uconv/util/umap.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/intl/uconv/util/umap.c b/intl/uconv/util/umap.c new file mode 100644 index 000000000..43a41e591 --- /dev/null +++ b/intl/uconv/util/umap.c @@ -0,0 +1,175 @@ +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ +/* #include "PRIntlpriv.h" */ +#include "unicpriv.h" + + +typedef uint16_t (* MapFormatFunc)(uint16_t in,const uTable *uT,const uMapCell *cell); +typedef int (* HitFormateFunc)(uint16_t in,const uMapCell *cell); +typedef void (* FillInfoFormateFunc)(const uTable *uT, const uMapCell *cell, uint32_t* info); + + +int uHitFormate0(uint16_t in,const uMapCell *cell); +int uHitFormate2(uint16_t in,const uMapCell *cell); +uint16_t uMapFormate0(uint16_t in,const uTable *uT,const uMapCell *cell); +uint16_t uMapFormate1(uint16_t in,const uTable *uT,const uMapCell *cell); +uint16_t uMapFormate2(uint16_t in,const uTable *uT,const uMapCell *cell); +void uFillInfoFormate0(const uTable *uT,const uMapCell *cell,uint32_t* aInfo); +void uFillInfoFormate1(const uTable *uT,const uMapCell *cell,uint32_t* aInfo); +void uFillInfoFormate2(const uTable *uT,const uMapCell *cell,uint32_t* aInfo); + + +const uMapCell *uGetMapCell(const uTable *uT, int16_t item); +char uGetFormat(const uTable *uT, int16_t item); + + +/*================================================================================= + +=================================================================================*/ +const MapFormatFunc m_map[uNumFormatTag] = +{ + uMapFormate0, + uMapFormate1, + uMapFormate2, +}; + +/*================================================================================= + +=================================================================================*/ +const FillInfoFormateFunc m_fillinfo[uNumFormatTag] = +{ + uFillInfoFormate0, + uFillInfoFormate1, + uFillInfoFormate2, +}; + +/*================================================================================= + +=================================================================================*/ +const HitFormateFunc m_hit[uNumFormatTag] = +{ + uHitFormate0, + uHitFormate0, + uHitFormate2, +}; + +#define uHit(format,in,cell) (* m_hit[(format)])((in),(cell)) +#define uMap(format,in,uT,cell) (* m_map[(format)])((in),(uT),(cell)) +#define uGetMapCell(uT, item) ((uMapCell *)(((uint16_t *)uT) + (uT)->offsetToMapCellArray + (item)*(UMAPCELL_SIZE/sizeof(uint16_t)))) +#define uGetFormat(uT, item) (((((uint16_t *)uT) + (uT)->offsetToFormatArray)[(item)>> 2 ] >> (((item)% 4 ) << 2)) & 0x0f) + +/*================================================================================= + +=================================================================================*/ +int uMapCode(const uTable *uT, uint16_t in, uint16_t* out) +{ + int done = 0; + uint16_t itemOfList = uT->itemOfList; + uint16_t i; + *out = NOMAPPING; + for(i=0;i<itemOfList;i++) + { + const uMapCell* uCell; + int8_t format = uGetFormat(uT,i); + uCell = uGetMapCell(uT,i); + if(uHit(format, in, uCell)) + { + *out = uMap(format, in, uT,uCell); + done = 1; + break; + } + } + return ( done && (*out != NOMAPPING)); +} + + +/* +member function +*/ +/*================================================================================= + +=================================================================================*/ +int uHitFormate0(uint16_t in,const uMapCell *cell) +{ + return ( (in >= cell->fmt.format0.srcBegin) && + (in <= cell->fmt.format0.srcEnd) ) ; +} +/*================================================================================= + +=================================================================================*/ +int uHitFormate2(uint16_t in,const uMapCell *cell) +{ + return (in == cell->fmt.format2.srcBegin); +} +/*================================================================================= + +=================================================================================*/ +uint16_t uMapFormate0(uint16_t in,const uTable *uT,const uMapCell *cell) +{ + return ((in - cell->fmt.format0.srcBegin) + cell->fmt.format0.destBegin); +} +/*================================================================================= + +=================================================================================*/ +uint16_t uMapFormate1(uint16_t in,const uTable *uT,const uMapCell *cell) +{ + return (*(((uint16_t *)uT) + uT->offsetToMappingTable + + cell->fmt.format1.mappingOffset + in - cell->fmt.format1.srcBegin)); +} +/*================================================================================= + +=================================================================================*/ +uint16_t uMapFormate2(uint16_t in,const uTable *uT,const uMapCell *cell) +{ + return (cell->fmt.format2.destBegin); +} + +#define SET_REPRESENTABLE(info, c) (info)[(c) >> 5] |= (1L << ((c) & 0x1f)) +/*================================================================================= + +=================================================================================*/ +void uFillInfoFormate0(const uTable *uT,const uMapCell *cell,uint32_t* info) +{ + uint16_t begin, end, i; + begin = cell->fmt.format0.srcBegin; + end = cell->fmt.format0.srcEnd; + if( (begin >> 5) == (end >> 5)) /* High 17 bits are the same */ + { + for(i = begin; i <= end; i++) + SET_REPRESENTABLE(info, i); + } + else { + uint32_t b = begin >> 5; + uint32_t e = end >> 5; + info[ b ] |= (0xFFFFFFFFL << ((begin) & 0x1f)); + info[ e ] |= (0xFFFFFFFFL >> (31 - ((end) & 0x1f))); + for(b++ ; b < e ; b++) + info[b] |= 0xFFFFFFFFL; + } +} +/*================================================================================= + +=================================================================================*/ +void uFillInfoFormate1(const uTable *uT,const uMapCell *cell,uint32_t* info) +{ + uint16_t begin, end, i; + uint16_t *base; + begin = cell->fmt.format0.srcBegin; + end = cell->fmt.format0.srcEnd; + base = (((uint16_t *)uT) + uT->offsetToMappingTable + cell->fmt.format1.mappingOffset); + for(i = begin; i <= end; i++) + { + if(0xFFFD != base[i - begin]) /* check every item */ + SET_REPRESENTABLE(info, i); + } +} +/*================================================================================= + +=================================================================================*/ +void uFillInfoFormate2(const uTable *uT,const uMapCell *cell,uint32_t* info) +{ + SET_REPRESENTABLE(info, cell->fmt.format2.srcBegin); +} + |