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Sweden-Number/win32/code_page.c

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/*
* Win32 kernel functions
*
* Copyright 1995 Martin von Loewis and Cameron Heide
*/
#include <stdlib.h>
#include "winerror.h"
#include "winnls.h"
#include "heap.h"
#include "debug.h"
DEFAULT_DEBUG_CHANNEL(win32)
/******************************************************************************
* GetACP [KERNEL32.276] Gets current ANSI code-page identifier.
*
* RETURNS
* Current ANSI code-page identifier, default if no current defined
*/
UINT WINAPI GetACP(void)
{
/* This introduces too many messages */
/* FIXME(win32, "(void): stub\n"); */
return 1252; /* Windows 3.1 ISO Latin */
}
/***********************************************************************
* GetCPInfo (KERNEL32.154)
*/
BOOL WINAPI GetCPInfo( UINT codepage, LPCPINFO cpinfo )
{
cpinfo->DefaultChar[0] = '?';
switch (codepage)
{
case 932 : /* Shift JIS (japan) */
cpinfo->MaxCharSize = 2;
cpinfo->LeadByte[0]= 0x81; cpinfo->LeadByte[1] = 0x9F;
cpinfo->LeadByte[2]= 0xE0; cpinfo->LeadByte[3] = 0xFC;
cpinfo->LeadByte[4]= 0x00; cpinfo->LeadByte[5] = 0x00;
break;
case 936 : /* GB2312 (Chinese) */
case 949 : /* KSC5601-1987 (Korean) */
case 950 : /* BIG5 (Chinese) */
cpinfo->MaxCharSize = 2;
cpinfo->LeadByte[0]= 0x81; cpinfo->LeadByte[1] = 0xFE;
cpinfo->LeadByte[2]= 0x00; cpinfo->LeadByte[3] = 0x00;
break;
case 1361 : /* Johab (Korean) */
cpinfo->MaxCharSize = 2;
cpinfo->LeadByte[0]= 0x84; cpinfo->LeadByte[1] = 0xD3;
cpinfo->LeadByte[2]= 0xD8; cpinfo->LeadByte[3] = 0xDE;
cpinfo->LeadByte[4]= 0xE0; cpinfo->LeadByte[5] = 0xF9;
cpinfo->LeadByte[6]= 0x00; cpinfo->LeadByte[7] = 0x00;
break;
default :
cpinfo->MaxCharSize = 1;
cpinfo->LeadByte[0]= 0x00; cpinfo->LeadByte[1] = 0x00;
break;
}
return 1;
}
/***********************************************************************
* GetOEMCP (KERNEL32.248)
*/
UINT WINAPI GetOEMCP(void)
{
return 437; /* MS-DOS United States */
}
/***********************************************************************
* IsValidCodePage (KERNEL32.360)
*/
BOOL WINAPI IsValidCodePage(UINT CodePage)
{
switch ( CodePage )
{
case 1252 :
case 437 :
return TRUE;
default :
return FALSE;
}
}
/***********************************************************************
* MultiByteToWideChar (KERNEL32.534)
*
* PARAMS
* page [in] Codepage character set to convert from
* flags [in] Character mapping flags
* src [in] Source string buffer
* srclen [in] Length of source string buffer
* dst [in] Destination buffer
* dstlen [in] Length of destination buffer
*
* NOTES
* The returned length includes the null terminator character.
*
* RETURNS
* Success: If dstlen > 0, number of characters written to destination
* buffer. If dstlen == 0, number of characters needed to do
* conversion.
* Failure: 0. Occurs if not enough space is available.
*
* ERRORS
* ERROR_INSUFFICIENT_BUFFER
* ERROR_INVALID_FLAGS (not yet implemented)
* ERROR_INVALID_PARAMETER (not yet implemented)
*
* BUGS
* Does not properly handle codepage conversions.
* Does not properly handle flags.
*
*/
INT WINAPI MultiByteToWideChar(UINT page, DWORD flags,
LPCSTR src, INT srclen,
LPWSTR dst, INT dstlen)
{
int ret;
if (srclen == -1)
srclen = lstrlenA(src)+1;
if (!dstlen || !dst)
return srclen;
ret = srclen;
while (srclen && dstlen) {
*dst = (WCHAR)(unsigned char)*src;
dst++; src++;
dstlen--; srclen--;
}
if (!dstlen && srclen) {
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
return ret;
}
/***********************************************************************
* WideCharToMultiByte (KERNEL32.727)
*
* PARAMS
* page [in] Codepage character set to convert to
* flags [in] Character mapping flags
* src [in] Source string buffer
* srclen [in] Length of source string buffer
* dst [in] Destination buffer
* dstlen [in] Length of destination buffer
* defchar [in] Default character to use for conversion if no exact
* conversion can be made
* used [out] Set if default character was used in the conversion
*
* NOTES
* The returned length includes the null terminator character.
*
* RETURNS
* Success: If dstlen > 0, number of characters written to destination
* buffer. If dstlen == 0, number of characters needed to do
* conversion.
* Failure: 0. Occurs if not enough space is available.
*
* ERRORS
* ERROR_INSUFFICIENT_BUFFER
* ERROR_INVALID_FLAGS (not yet implemented)
*
* BUGS
* Does not properly handle codepage conversions.
* Does not properly handle flags.
*
*/
INT WINAPI WideCharToMultiByte(UINT page, DWORD flags, LPCWSTR src,
INT srclen,LPSTR dst, INT dstlen,
LPCSTR defchar, BOOL *used)
{
int count = 0;
int eos = 0;
int care_for_eos=0;
int dont_copy= (dstlen==0);
if ((!src) | ((!dst) && (!dont_copy)) )
{ SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
if (page!=GetACP() && page!=CP_OEMCP && page!=CP_ACP)
FIXME(win32,"Conversion in CP %d not supported\n",page);
#if 0
if (flags)
FIXME(win32,"flags %lx not supported\n",flags);
#endif
if(used)
*used=0;
if (srclen == -1)
{
srclen = lstrlenW(src)+1;
care_for_eos=1;
}
while(srclen && (dont_copy || dstlen))
{
if(!dont_copy){
if(*src<256)
*dst = *src;
else
{
/* ??? The WC_DEFAULTCHAR flag only gets used in
* combination with the WC_COMPOSITECHECK flag or at
* least this is what it seems from using the function
* on NT4.0 in combination with reading the documentation.
*/
*dst = defchar ? *defchar : '?';
if(used)*used=1;
}
dstlen--;
dst++;
}
count++;
srclen--;
if((!*src) && care_for_eos) {
eos = 1;
break;
}
src++;
}
if (dont_copy)
return count;
if (!eos && srclen > 0) {
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
return count;
}
/***********************************************************************
* IsDBCSLeadByteEx (KERNEL32.359)
*/
BOOL WINAPI IsDBCSLeadByteEx( UINT codepage, BYTE testchar )
{
CPINFO cpinfo;
int i;
GetCPInfo(codepage, &cpinfo);
for (i = 0 ; i < sizeof(cpinfo.LeadByte)/sizeof(cpinfo.LeadByte[0]); i+=2)
{
if (cpinfo.LeadByte[i] == 0)
return FALSE;
if (cpinfo.LeadByte[i] <= testchar && testchar <= cpinfo.LeadByte[i+1])
return TRUE;
}
return FALSE;
}
/***********************************************************************
* IsDBCSLeadByte16 (KERNEL.207)
*/
BOOL16 WINAPI IsDBCSLeadByte16( BYTE testchar )
{
return IsDBCSLeadByteEx(GetACP(), testchar);
}
/***********************************************************************
* IsDBCSLeadByte32 (KERNEL32.358)
*/
BOOL WINAPI IsDBCSLeadByte( BYTE testchar )
{
return IsDBCSLeadByteEx(GetACP(), testchar);
}
/***********************************************************************
* EnumSystemCodePages32A (KERNEL32.92)
*/
BOOL WINAPI EnumSystemCodePagesA(CODEPAGE_ENUMPROCA lpfnCodePageEnum,DWORD flags)
{
TRACE(win32,"(%p,%08lx)\n",lpfnCodePageEnum,flags);
lpfnCodePageEnum("437");
return TRUE;
}
/***********************************************************************
* EnumSystemCodePages32W (KERNEL32.93)
*/
BOOL WINAPI EnumSystemCodePagesW( CODEPAGE_ENUMPROCW lpfnCodePageEnum,
DWORD flags)
{
WCHAR *cp;
TRACE(win32,"(%p,%08lx)\n",lpfnCodePageEnum,flags );
cp = HEAP_strdupAtoW( GetProcessHeap(), 0, "437" );
lpfnCodePageEnum(cp);
HeapFree( GetProcessHeap(), 0, cp );
return TRUE;
}
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