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Sweden-Number/memory/codepage.c

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/*
* Code page functions
*
* Copyright 2000 Alexandre Julliard
*/
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include "winbase.h"
#include "winerror.h"
#include "winnls.h"
#include "wine/unicode.h"
#include "debugtools.h"
DEFAULT_DEBUG_CHANNEL(string);
/* current code pages */
static const union cptable *ansi_cptable;
static const union cptable *oem_cptable;
static const union cptable *mac_cptable;
/* retrieve a code page table from the locale info */
static const union cptable *get_locale_cp( LCID lcid, LCTYPE type )
{
const union cptable *table = NULL;
char buf[32];
if (GetLocaleInfoA( lcid, type, buf, sizeof(buf) )) table = cp_get_table( atoi(buf) );
return table;
}
/* setup default codepage info before we can get at the locale stuff */
static void init_codepages(void)
{
ansi_cptable = cp_get_table( 1252 );
oem_cptable = cp_get_table( 437 );
mac_cptable = cp_get_table( 10000 );
assert( ansi_cptable );
assert( oem_cptable );
assert( mac_cptable );
}
/* find the table for a given codepage, handling CP_ACP etc. pseudo-codepages */
static const union cptable *get_codepage_table( unsigned int codepage )
{
const union cptable *ret = NULL;
if (!ansi_cptable) init_codepages();
switch(codepage)
{
case CP_ACP: return ansi_cptable;
case CP_OEMCP: return oem_cptable;
case CP_MACCP: return mac_cptable;
case CP_THREAD_ACP: return get_locale_cp( GetThreadLocale(), LOCALE_IDEFAULTANSICODEPAGE );
case CP_UTF7:
case CP_UTF8:
break;
default:
if (codepage == ansi_cptable->info.codepage) return ansi_cptable;
if (codepage == oem_cptable->info.codepage) return oem_cptable;
if (codepage == mac_cptable->info.codepage) return mac_cptable;
ret = cp_get_table( codepage );
break;
}
return ret;
}
/* initialize default code pages from locale info */
/* FIXME: should be done in init_codepages, but it can't right now */
/* since it needs KERNEL32 to be loaded for the locale info. */
void CODEPAGE_Init(void)
{
const union cptable *table;
LCID lcid = GetUserDefaultLCID();
if (!ansi_cptable) init_codepages(); /* just in case */
if ((table = get_locale_cp( lcid, LOCALE_IDEFAULTANSICODEPAGE ))) ansi_cptable = table;
if ((table = get_locale_cp( lcid, LOCALE_IDEFAULTMACCODEPAGE ))) mac_cptable = table;
if ((table = get_locale_cp( lcid, LOCALE_IDEFAULTCODEPAGE ))) oem_cptable = table;
TRACE( "ansi=%03d oem=%03d mac=%03d\n", ansi_cptable->info.codepage,
oem_cptable->info.codepage, mac_cptable->info.codepage );
}
/******************************************************************************
* GetACP (KERNEL32)
*
* RETURNS
* Current ANSI code-page identifier, default if no current defined
*/
UINT WINAPI GetACP(void)
{
if (!ansi_cptable) init_codepages();
return ansi_cptable->info.codepage;
}
/***********************************************************************
* GetOEMCP (KERNEL32)
*/
UINT WINAPI GetOEMCP(void)
{
if (!oem_cptable) init_codepages();
return oem_cptable->info.codepage;
}
/***********************************************************************
* IsValidCodePage (KERNEL32)
*/
BOOL WINAPI IsValidCodePage( UINT codepage )
{
return cp_get_table( codepage ) != NULL;
}
/***********************************************************************
* IsDBCSLeadByteEx (KERNEL32)
*/
BOOL WINAPI IsDBCSLeadByteEx( UINT codepage, BYTE testchar )
{
const union cptable *table = get_codepage_table( codepage );
return table && is_dbcs_leadbyte( table, testchar );
}
/***********************************************************************
* IsDBCSLeadByte (KERNEL32)
*/
BOOL WINAPI IsDBCSLeadByte( BYTE testchar )
{
if (!ansi_cptable) init_codepages();
return is_dbcs_leadbyte( ansi_cptable, testchar );
}
/***********************************************************************
* GetCPInfo (KERNEL32)
*/
BOOL WINAPI GetCPInfo( UINT codepage, LPCPINFO cpinfo )
{
const union cptable *table = get_codepage_table( codepage );
if (!table)
{
SetLastError( ERROR_INVALID_PARAMETER );
return FALSE;
}
if (table->info.def_char & 0xff00)
{
cpinfo->DefaultChar[0] = table->info.def_char & 0xff00;
cpinfo->DefaultChar[1] = table->info.def_char & 0x00ff;
}
else
{
cpinfo->DefaultChar[0] = table->info.def_char & 0xff;
cpinfo->DefaultChar[1] = 0;
}
if ((cpinfo->MaxCharSize = table->info.char_size) == 2)
memcpy( cpinfo->LeadByte, table->dbcs.lead_bytes, sizeof(cpinfo->LeadByte) );
else
cpinfo->LeadByte[0] = cpinfo->LeadByte[1] = 0;
return TRUE;
}
/***********************************************************************
* EnumSystemCodePagesA (KERNEL32)
*/
BOOL WINAPI EnumSystemCodePagesA( CODEPAGE_ENUMPROCA lpfnCodePageEnum, DWORD flags )
{
const union cptable *table;
char buffer[10];
int index = 0;
for (;;)
{
if (!(table = cp_enum_table( index++ ))) break;
sprintf( buffer, "%d", table->info.codepage );
if (!lpfnCodePageEnum( buffer )) break;
}
return TRUE;
}
/***********************************************************************
* EnumSystemCodePagesW (KERNEL32)
*/
BOOL WINAPI EnumSystemCodePagesW( CODEPAGE_ENUMPROCW lpfnCodePageEnum, DWORD flags )
{
const union cptable *table;
WCHAR buffer[10], *p;
int page, index = 0;
for (;;)
{
if (!(table = cp_enum_table( index++ ))) break;
p = buffer + sizeof(buffer)/sizeof(WCHAR);
*--p = 0;
page = table->info.codepage;
do
{
*--p = '0' + (page % 10);
page /= 10;
} while( page );
if (!lpfnCodePageEnum( p )) break;
}
return TRUE;
}
/***********************************************************************
* MultiByteToWideChar (KERNEL32)
*
* 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_PARAMETER
* ERROR_NO_UNICODE_TRANSLATION
*
*/
INT WINAPI MultiByteToWideChar( UINT page, DWORD flags, LPCSTR src, INT srclen,
LPWSTR dst, INT dstlen )
{
const union cptable *table;
int ret;
if (!src || (!dst && dstlen))
{
SetLastError( ERROR_INVALID_PARAMETER );
return 0;
}
if (srclen == -1) srclen = strlen(src) + 1;
if (flags & MB_COMPOSITE) FIXME("MB_COMPOSITE not supported\n");
if (flags & MB_USEGLYPHCHARS) FIXME("MB_USEGLYPHCHARS not supported\n");
switch(page)
{
case CP_UTF7:
FIXME("UTF not supported\n");
SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
return 0;
case CP_UTF8:
ret = utf8_mbstowcs( flags, src, srclen, dst, dstlen );
break;
default:
if (!(table = get_codepage_table( page )))
{
SetLastError( ERROR_INVALID_PARAMETER );
return 0;
}
ret = cp_mbstowcs( table, flags, src, srclen, dst, dstlen );
break;
}
if (ret < 0)
{
switch(ret)
{
case -1: SetLastError( ERROR_INSUFFICIENT_BUFFER ); break;
case -2: SetLastError( ERROR_NO_UNICODE_TRANSLATION ); break;
}
ret = 0;
}
return ret;
}
/***********************************************************************
* WideCharToMultiByte (KERNEL32)
*
* 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_PARAMETER
*/
INT WINAPI WideCharToMultiByte( UINT page, DWORD flags, LPCWSTR src, INT srclen,
LPSTR dst, INT dstlen, LPCSTR defchar, BOOL *used )
{
const union cptable *table;
int ret, used_tmp;
if (!src || (!dst && dstlen))
{
SetLastError( ERROR_INVALID_PARAMETER );
return 0;
}
if (srclen == -1) srclen = strlenW(src) + 1;
/* if (flags & WC_COMPOSITECHECK) FIXME( "WC_COMPOSITECHECK (%lx) not supported\n", flags );*/
switch(page)
{
case CP_UTF7:
FIXME("UTF-7 not supported\n");
SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
return 0;
case CP_UTF8:
ret = utf8_wcstombs( src, srclen, dst, dstlen );
break;
default:
if (!(table = get_codepage_table( page )))
{
SetLastError( ERROR_INVALID_PARAMETER );
return 0;
}
ret = cp_wcstombs( table, flags, src, srclen, dst, dstlen,
defchar, used ? &used_tmp : NULL );
if (used) *used = used_tmp;
break;
}
if (ret == -1)
{
SetLastError( ERROR_INSUFFICIENT_BUFFER );
ret = 0;
}
return ret;
}
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