gecko-dev/lib/libi18n/umap.c
1998-09-19 00:23:58 +00:00

238 lines
8.5 KiB
C

/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "intlpriv.h"
#include "unicpriv.h"
typedef uint16 (* MapFormatFunc)(uint16 in,uTable *uT,uMapCell *cell);
typedef XP_Bool (* HitFormateFunc)(uint16 in,uMapCell *cell);
typedef void (* IterateFormatFunc)(uTable *uT, uMapCell *cell,uMapIterateFunc callback, uint16 context);
PRIVATE XP_Bool uHitFormate0(uint16 in,uMapCell *cell);
PRIVATE XP_Bool uHitFormate1(uint16 in,uMapCell *cell);
PRIVATE XP_Bool uHitFormate2(uint16 in,uMapCell *cell);
PRIVATE uint16 uMapFormate0(uint16 in,uTable *uT,uMapCell *cell);
PRIVATE uint16 uMapFormate1(uint16 in,uTable *uT,uMapCell *cell);
PRIVATE uint16 uMapFormate2(uint16 in,uTable *uT,uMapCell *cell);
PRIVATE void uIterateFormate0(uTable *uT, uMapCell *cell,uMapIterateFunc callback, uint16 context);
PRIVATE void uIterateFormate1(uTable *uT, uMapCell *cell,uMapIterateFunc callback, uint16 context);
PRIVATE void uIterateFormate2(uTable *uT, uMapCell *cell,uMapIterateFunc callback, uint16 context);
PRIVATE uMapCell *uGetMapCell(uTable *uT, int16 item);
PRIVATE char uGetFormat(uTable *uT, int16 item);
/*=================================================================================
=================================================================================*/
PRIVATE MapFormatFunc m_map[uNumFormatTag] =
{
uMapFormate0,
uMapFormate1,
uMapFormate2,
};
/*=================================================================================
=================================================================================*/
PRIVATE IterateFormatFunc m_iterate[uNumFormatTag] =
{
uIterateFormate0,
uIterateFormate1,
uIterateFormate2,
};
/*=================================================================================
=================================================================================*/
PRIVATE HitFormateFunc m_hit[uNumFormatTag] =
{
uHitFormate0,
uHitFormate1,
uHitFormate2,
};
/*
Need more work
*/
/*=================================================================================
=================================================================================*/
PRIVATE XP_Bool uHit(unsigned char format, uint16 in,uMapCell *cell)
{
return (* m_hit[format])((in),(cell));
}
/*=================================================================================
=================================================================================*/
PRIVATE void uCellIterate(unsigned char format, uTable *uT, uMapCell *cell,uMapIterateFunc callback, uint16 context)
{
(* m_iterate[format])((uT),(cell),(callback),(context));
}
/*
Switch to Macro later for performance
#define uHit(format,in,cell) (* m_hit[format])((in),(cell))
*/
/*=================================================================================
=================================================================================*/
PRIVATE uint16 uMap(unsigned char format, uint16 in,uTable *uT,uMapCell *cell)
{
return (* m_map[format])((in),(uT),(cell));
}
/*
Switch to Macro later for performance
#define uMap(format,in,cell) (* m_map[format])((in),(cell))
*/
/*=================================================================================
=================================================================================*/
/*
Switch to Macro later for performance
*/
PRIVATE uMapCell *uGetMapCell(uTable *uT, int16 item)
{
return ((uMapCell *)(((uint16 *)uT) + uT->offsetToMapCellArray) + item) ;
}
/*=================================================================================
=================================================================================*/
/*
Switch to Macro later for performance
*/
PRIVATE char uGetFormat(uTable *uT, int16 item)
{
return (((((uint16 *)uT) + uT->offsetToFormatArray)[ item >> 2 ]
>> (( item % 4 ) << 2)) & 0x0f);
}
/*=================================================================================
=================================================================================*/
MODULE_PRIVATE XP_Bool uMapCode(uTable *uT, uint16 in, uint16* out)
{
XP_Bool done = FALSE;
uint16 itemOfList = uT->itemOfList;
uint16 i;
*out = NOMAPPING;
for(i=0;i<itemOfList;i++)
{
uMapCell* uCell;
char format = uGetFormat(uT,i);
uCell = uGetMapCell(uT,i);
if(uHit(format, in, uCell))
{
*out = uMap(format, in, uT,uCell);
done = TRUE;
break;
}
}
return ( done && (*out != NOMAPPING));
}
/*=================================================================================
=================================================================================*/
MODULE_PRIVATE void uMapIterate(uTable *uT, uMapIterateFunc callback, uint16 context)
{
uint16 itemOfList = uT->itemOfList;
uint16 i;
for(i=0;i<itemOfList;i++)
{
uMapCell* uCell;
char format = uGetFormat(uT,i);
uCell = uGetMapCell(uT,i);
uCellIterate(format, uT ,uCell,callback, context);
}
}
/*
member function
*/
/*=================================================================================
=================================================================================*/
PRIVATE XP_Bool uHitFormate0(uint16 in,uMapCell *cell)
{
return ( (in >= cell->fmt.format0.srcBegin) &&
(in <= cell->fmt.format0.srcEnd) ) ;
}
/*=================================================================================
=================================================================================*/
PRIVATE XP_Bool uHitFormate1(uint16 in,uMapCell *cell)
{
return uHitFormate0(in,cell);
}
/*=================================================================================
=================================================================================*/
PRIVATE XP_Bool uHitFormate2(uint16 in,uMapCell *cell)
{
return (in == cell->fmt.format2.srcBegin);
}
/*=================================================================================
=================================================================================*/
PRIVATE uint16 uMapFormate0(uint16 in,uTable *uT,uMapCell *cell)
{
return ((in - cell->fmt.format0.srcBegin) + cell->fmt.format0.destBegin);
}
/*=================================================================================
=================================================================================*/
PRIVATE uint16 uMapFormate1(uint16 in,uTable *uT,uMapCell *cell)
{
return (*(((uint16 *)uT) + uT->offsetToMappingTable
+ cell->fmt.format1.mappingOffset + in - cell->fmt.format1.srcBegin));
}
/*=================================================================================
=================================================================================*/
PRIVATE uint16 uMapFormate2(uint16 in,uTable *uT,uMapCell *cell)
{
return (cell->fmt.format2.destBegin);
}
/*=================================================================================
=================================================================================*/
PRIVATE void uIterateFormate0(uTable *uT, uMapCell *cell,uMapIterateFunc callback, uint16 context)
{
uint16 ucs2;
uint16 med;
for(ucs2 = cell->fmt.format0.srcBegin, med = cell->fmt.format0.destBegin;
ucs2 <= cell->fmt.format0.srcEnd ; ucs2++,med++)
(*callback)(ucs2, med, context);
}
/*=================================================================================
=================================================================================*/
PRIVATE void uIterateFormate1(uTable *uT, uMapCell *cell,uMapIterateFunc callback, uint16 context)
{
uint16 ucs2;
uint16 *medpt;
medpt = (((uint16 *)uT) + uT->offsetToMappingTable + cell->fmt.format1.mappingOffset);
for(ucs2 = cell->fmt.format1.srcBegin; ucs2 <= cell->fmt.format1.srcEnd ; ucs2++, medpt++)
(*callback)(ucs2, *medpt, context);
}
/*=================================================================================
=================================================================================*/
PRIVATE void uIterateFormate2(uTable *uT, uMapCell *cell,uMapIterateFunc callback, uint16 context)
{
(*callback)(cell->fmt.format2.srcBegin, cell->fmt.format2.destBegin, context);
}