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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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175
intl/uconv/util/umap.c Normal file
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/* -*- 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);
}