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reactos/dll/win32/kernel32/misc/nls.c
Amine Khaldi c424146e2c Create a branch for cmake bringup. 
svn path=/branches/cmake-bringup/; revision=48236
2010-07-24 18:52:44 +00:00

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/* $Id$
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS system libraries
* FILE: dll/win32/kernel32/misc/nls.c
* PURPOSE: National Language Support
* PROGRAMMER: Filip Navara
* Hartmut Birr
* Gunnar Andre Dalsnes
* Thomas Weidenmueller
* UPDATE HISTORY:
* Created 24/08/2004
*/
/* INCLUDES *******************************************************************/
#include <k32.h>
#define NDEBUG
#include <debug.h>
/* GLOBAL VARIABLES ***********************************************************/
/* Sequence length based on the first character. */
static const char UTF8Length[128] =
{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x80 - 0x8F */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x90 - 0x9F */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xA0 - 0xAF */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xB0 - 0xBF */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0xC0 - 0xCF */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0xD0 - 0xDF */
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* 0xE0 - 0xEF */
3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 0, 0 /* 0xF0 - 0xFF */
};
/* First byte mask depending on UTF-8 sequence length. */
static const unsigned char UTF8Mask[6] = {0x7f, 0x1f, 0x0f, 0x07, 0x03, 0x01};
/* FIXME: Change to HASH table or linear array. */
static LIST_ENTRY CodePageListHead;
static CODEPAGE_ENTRY AnsiCodePage;
static CODEPAGE_ENTRY OemCodePage;
static RTL_CRITICAL_SECTION CodePageListLock;
/* FORWARD DECLARATIONS *******************************************************/
BOOL WINAPI
GetNlsSectionName(UINT CodePage, UINT Base, ULONG Unknown,
LPSTR BaseName, LPSTR Result, ULONG ResultSize);
BOOL WINAPI
GetCPFileNameFromRegistry(UINT CodePage, LPWSTR FileName, ULONG FileNameSize);
/* PRIVATE FUNCTIONS **********************************************************/
/**
* @name NlsInit
*
* Internal NLS related stuff initialization.
*/
BOOL
FASTCALL
NlsInit(VOID)
{
UNICODE_STRING DirName;
OBJECT_ATTRIBUTES ObjectAttributes;
HANDLE Handle;
InitializeListHead(&CodePageListHead);
RtlInitializeCriticalSection(&CodePageListLock);
/*
* FIXME: Eventually this should be done only for the NLS Server
* process, but since we don't have anything like that (yet?) we
* always try to create the "\Nls" directory here.
*/
RtlInitUnicodeString(&DirName, L"\\Nls");
InitializeObjectAttributes(&ObjectAttributes,
&DirName,
OBJ_CASE_INSENSITIVE | OBJ_PERMANENT,
NULL,
NULL);
if (NT_SUCCESS(NtCreateDirectoryObject(&Handle, DIRECTORY_ALL_ACCESS, &ObjectAttributes)))
{
NtClose(Handle);
}
/* Setup ANSI code page. */
AnsiCodePage.CodePage = CP_ACP;
AnsiCodePage.SectionHandle = NULL;
AnsiCodePage.SectionMapping = NtCurrentTeb()->ProcessEnvironmentBlock->AnsiCodePageData;
RtlInitCodePageTable((PUSHORT)AnsiCodePage.SectionMapping,
&AnsiCodePage.CodePageTable);
InsertTailList(&CodePageListHead, &AnsiCodePage.Entry);
/* Setup OEM code page. */
OemCodePage.CodePage = CP_OEMCP;
OemCodePage.SectionHandle = NULL;
OemCodePage.SectionMapping = NtCurrentTeb()->ProcessEnvironmentBlock->OemCodePageData;
RtlInitCodePageTable((PUSHORT)OemCodePage.SectionMapping,
&OemCodePage.CodePageTable);
InsertTailList(&CodePageListHead, &OemCodePage.Entry);
return TRUE;
}
/**
* @name NlsUninit
*
* Internal NLS related stuff uninitialization.
*/
VOID
FASTCALL
NlsUninit(VOID)
{
PCODEPAGE_ENTRY Current;
/* Delete the code page list. */
while (!IsListEmpty(&CodePageListHead))
{
Current = CONTAINING_RECORD(CodePageListHead.Flink, CODEPAGE_ENTRY, Entry);
if (Current->SectionHandle != NULL)
{
UnmapViewOfFile(Current->SectionMapping);
NtClose(Current->SectionHandle);
}
RemoveHeadList(&CodePageListHead);
}
RtlDeleteCriticalSection(&CodePageListLock);
}
/**
* @name IntGetLoadedCodePageEntry
*
* Internal function to get structure containing a code page information
* of code page that is already loaded.
*
* @param CodePage
* Number of the code page. Special values like CP_OEMCP, CP_ACP
* or CP_UTF8 aren't allowed.
*
* @return Code page entry or NULL if the specified code page hasn't
* been loaded yet.
*/
PCODEPAGE_ENTRY
FASTCALL
IntGetLoadedCodePageEntry(UINT CodePage)
{
LIST_ENTRY *CurrentEntry;
PCODEPAGE_ENTRY Current;
RtlEnterCriticalSection(&CodePageListLock);
for (CurrentEntry = CodePageListHead.Flink;
CurrentEntry != &CodePageListHead;
CurrentEntry = CurrentEntry->Flink)
{
Current = CONTAINING_RECORD(CurrentEntry, CODEPAGE_ENTRY, Entry);
if (Current->CodePage == CodePage)
{
RtlLeaveCriticalSection(&CodePageListLock);
return Current;
}
}
RtlLeaveCriticalSection(&CodePageListLock);
return NULL;
}
/**
* @name IntGetCodePageEntry
*
* Internal function to get structure containing a code page information.
*
* @param CodePage
* Number of the code page. Special values like CP_OEMCP, CP_ACP
* or CP_THREAD_ACP are allowed, but CP_UTF[7/8] isn't.
*
* @return Code page entry.
*/
PCODEPAGE_ENTRY
FASTCALL
IntGetCodePageEntry(UINT CodePage)
{
CHAR SectionName[40];
NTSTATUS Status;
HANDLE SectionHandle = INVALID_HANDLE_VALUE, FileHandle;
PBYTE SectionMapping;
OBJECT_ATTRIBUTES ObjectAttributes;
ANSI_STRING AnsiName;
UNICODE_STRING UnicodeName;
WCHAR FileName[MAX_PATH + 1];
UINT FileNamePos;
PCODEPAGE_ENTRY CodePageEntry;
if (CodePage == CP_THREAD_ACP)
{
if (!GetLocaleInfoW(GetThreadLocale(),
LOCALE_IDEFAULTANSICODEPAGE | LOCALE_RETURN_NUMBER,
(WCHAR *)&CodePage,
sizeof(CodePage) / sizeof(WCHAR)))
{
/* Last error is set by GetLocaleInfoW. */
return NULL;
}
}
else if (CodePage == CP_MACCP)
{
if (!GetLocaleInfoW(LOCALE_SYSTEM_DEFAULT,
LOCALE_IDEFAULTMACCODEPAGE | LOCALE_RETURN_NUMBER,
(WCHAR *)&CodePage,
sizeof(CodePage) / sizeof(WCHAR)))
{
/* Last error is set by GetLocaleInfoW. */
return NULL;
}
}
/* Try searching for loaded page first. */
CodePageEntry = IntGetLoadedCodePageEntry(CodePage);
if (CodePageEntry != NULL)
{
return CodePageEntry;
}
/*
* Yes, we really want to lock here. Otherwise it can happen that
* two parallel requests will try to get the entry for the same
* code page and we would load it twice.
*/
RtlEnterCriticalSection(&CodePageListLock);
/* Generate the section name. */
if (!GetNlsSectionName(CodePage,
10,
0,
"\\Nls\\NlsSectionCP",
SectionName,
sizeof(SectionName)))
{
RtlLeaveCriticalSection(&CodePageListLock);
return NULL;
}
RtlInitAnsiString(&AnsiName, SectionName);
RtlAnsiStringToUnicodeString(&UnicodeName, &AnsiName, TRUE);
InitializeObjectAttributes(&ObjectAttributes, &UnicodeName, 0, NULL, NULL);
/* Try to open the section first */
Status = NtOpenSection(&SectionHandle, SECTION_MAP_READ, &ObjectAttributes);
/* If the section doesn't exist, try to create it. */
if (Status == STATUS_UNSUCCESSFUL ||
Status == STATUS_OBJECT_NAME_NOT_FOUND ||
Status == STATUS_OBJECT_PATH_NOT_FOUND)
{
FileNamePos = GetSystemDirectoryW(FileName, MAX_PATH);
if (GetCPFileNameFromRegistry(CodePage,
FileName + FileNamePos + 1,
MAX_PATH - FileNamePos - 1))
{
FileName[FileNamePos] = L'\\';
FileName[MAX_PATH] = 0;
FileHandle = CreateFileW(FileName,
FILE_GENERIC_READ,
FILE_SHARE_READ,
NULL,
OPEN_EXISTING,
0,
NULL);
Status = NtCreateSection(&SectionHandle,
SECTION_MAP_READ,
&ObjectAttributes,
NULL,
PAGE_READONLY,
SEC_FILE,
FileHandle);
/* HACK: Check if another process was faster
* and already created this section. See bug 3626 for details */
if (Status == STATUS_OBJECT_NAME_COLLISION)
{
/* Close the file then */
NtClose(FileHandle);
/* And open the section */
Status = NtOpenSection(&SectionHandle,
SECTION_MAP_READ,
&ObjectAttributes);
}
}
}
RtlFreeUnicodeString(&UnicodeName);
if (!NT_SUCCESS(Status))
{
RtlLeaveCriticalSection(&CodePageListLock);
return NULL;
}
SectionMapping = MapViewOfFile(SectionHandle, FILE_MAP_READ, 0, 0, 0);
if (SectionMapping == NULL)
{
NtClose(SectionHandle);
RtlLeaveCriticalSection(&CodePageListLock);
return NULL;
}
CodePageEntry = HeapAlloc(GetProcessHeap(), 0, sizeof(CODEPAGE_ENTRY));
if (CodePageEntry == NULL)
{
NtClose(SectionHandle);
RtlLeaveCriticalSection(&CodePageListLock);
return NULL;
}
CodePageEntry->CodePage = CodePage;
CodePageEntry->SectionHandle = SectionHandle;
CodePageEntry->SectionMapping = SectionMapping;
RtlInitCodePageTable((PUSHORT)SectionMapping, &CodePageEntry->CodePageTable);
/* Insert the new entry to list and unlock. Uff. */
InsertTailList(&CodePageListHead, &CodePageEntry->Entry);
RtlLeaveCriticalSection(&CodePageListLock);
return CodePageEntry;
}
/**
* @name IntMultiByteToWideCharUTF8
*
* Internal version of MultiByteToWideChar for UTF8.
*
* @see MultiByteToWideChar
* @todo Add UTF8 validity checks.
*/
static
INT
WINAPI
IntMultiByteToWideCharUTF8(DWORD Flags,
LPCSTR MultiByteString,
INT MultiByteCount,
LPWSTR WideCharString,
INT WideCharCount)
{
LPCSTR MbsEnd;
UCHAR Char, Length;
WCHAR WideChar;
LONG Count;
if (Flags != 0)
{
SetLastError(ERROR_INVALID_FLAGS);
return 0;
}
/* Does caller query for output buffer size? */
if (WideCharCount == 0)
{
MbsEnd = MultiByteString + MultiByteCount;
for (; MultiByteString < MbsEnd; WideCharCount++)
{
Char = *MultiByteString++;
if (Char < 0xC0)
continue;
MultiByteString += UTF8Length[Char - 0x80];
}
return WideCharCount;
}
MbsEnd = MultiByteString + MultiByteCount;
for (Count = 0; Count < WideCharCount && MultiByteString < MbsEnd; Count++)
{
Char = *MultiByteString++;
if (Char < 0x80)
{
*WideCharString++ = Char;
continue;
}
Length = UTF8Length[Char - 0x80];
WideChar = Char & UTF8Mask[Length];
while (Length && MultiByteString < MbsEnd)
{
WideChar = (WideChar << 6) | (*MultiByteString++ & 0x7f);
Length--;
}
*WideCharString++ = WideChar;
}
if (MultiByteString < MbsEnd)
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return Count;
}
/**
* @name IntMultiByteToWideCharCP
*
* Internal version of MultiByteToWideChar for code page tables.
*
* @see MultiByteToWideChar
* @todo Handle MB_PRECOMPOSED, MB_COMPOSITE, MB_USEGLYPHCHARS and
* DBCS codepages.
*/
static
INT
WINAPI
IntMultiByteToWideCharCP(UINT CodePage,
DWORD Flags,
LPCSTR MultiByteString,
INT MultiByteCount,
LPWSTR WideCharString,
INT WideCharCount)
{
PCODEPAGE_ENTRY CodePageEntry;
PCPTABLEINFO CodePageTable;
LPCSTR TempString;
INT TempLength;
/* Get code page table. */
CodePageEntry = IntGetCodePageEntry(CodePage);
if (CodePageEntry == NULL)
{
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
CodePageTable = &CodePageEntry->CodePageTable;
/* Different handling for DBCS code pages. */
if (CodePageTable->MaximumCharacterSize > 1)
{
/* FIXME */
UCHAR Char;
USHORT DBCSOffset;
LPCSTR MbsEnd = MultiByteString + MultiByteCount;
INT Count;
/* Does caller query for output buffer size? */
if (WideCharCount == 0)
{
for (; MultiByteString < MbsEnd; WideCharCount++)
{
Char = *MultiByteString++;
if (Char < 0x80)
continue;
DBCSOffset = CodePageTable->DBCSOffsets[Char];
if (!DBCSOffset)
continue;
if (MultiByteString < MbsEnd)
MultiByteString++;
}
return WideCharCount;
}
for (Count = 0; Count < WideCharCount && MultiByteString < MbsEnd; Count++)
{
Char = *MultiByteString++;
if (Char < 0x80)
{
*WideCharString++ = Char;
continue;
}
DBCSOffset = CodePageTable->DBCSOffsets[Char];
if (!DBCSOffset)
{
*WideCharString++ = CodePageTable->MultiByteTable[Char];
continue;
}
if (MultiByteString < MbsEnd)
*WideCharString++ = CodePageTable->DBCSOffsets[DBCSOffset + *(PUCHAR)MultiByteString++];
}
if (MultiByteString < MbsEnd)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
return Count;
}
else /* Not DBCS code page */
{
/* Check for invalid characters. */
if (Flags & MB_ERR_INVALID_CHARS)
{
for (TempString = MultiByteString, TempLength = MultiByteCount;
TempLength > 0;
TempString++, TempLength--)
{
if (CodePageTable->MultiByteTable[(UCHAR)*TempString] ==
CodePageTable->UniDefaultChar &&
*TempString != CodePageEntry->CodePageTable.DefaultChar)
{
SetLastError(ERROR_NO_UNICODE_TRANSLATION);
return 0;
}
}
}
/* Does caller query for output buffer size? */
if (WideCharCount == 0)
return MultiByteCount;
/* Fill the WideCharString buffer with what will fit: Verified on WinXP */
for (TempLength = (WideCharCount < MultiByteCount) ? WideCharCount : MultiByteCount;
TempLength > 0;
MultiByteString++, TempLength--)
{
*WideCharString++ = CodePageTable->MultiByteTable[(UCHAR)*MultiByteString];
}
/* Adjust buffer size. Wine trick ;-) */
if (WideCharCount < MultiByteCount)
{
MultiByteCount = WideCharCount;
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
return MultiByteCount;
}
}
/**
* @name IntMultiByteToWideCharSYMBOL
*
* Internal version of MultiByteToWideChar for SYMBOL.
*
* @see MultiByteToWideChar
*/
static
INT
WINAPI
IntMultiByteToWideCharSYMBOL(DWORD Flags,
LPCSTR MultiByteString,
INT MultiByteCount,
LPWSTR WideCharString,
INT WideCharCount)
{
LONG Count;
UCHAR Char;
INT WideCharMaxLen;
if (Flags != 0)
{
SetLastError(ERROR_INVALID_FLAGS);
return 0;
}
if (WideCharCount == 0)
{
return MultiByteCount;
}
WideCharMaxLen = WideCharCount > MultiByteCount ? MultiByteCount : WideCharCount;
for (Count = 0; Count < WideCharMaxLen; Count++)
{
Char = MultiByteString[Count];
if ( Char < 0x20 )
{
WideCharString[Count] = Char;
}
else
{
WideCharString[Count] = Char + 0xf000;
}
}
if (MultiByteCount > WideCharMaxLen)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
return WideCharMaxLen;
}
/**
* @name IntWideCharToMultiByteSYMBOL
*
* Internal version of WideCharToMultiByte for SYMBOL.
*
* @see WideCharToMultiByte
*/
static INT
WINAPI
IntWideCharToMultiByteSYMBOL(DWORD Flags,
LPCWSTR WideCharString,
INT WideCharCount,
LPSTR MultiByteString,
INT MultiByteCount)
{
LONG Count;
INT MaxLen;
WCHAR Char;
if (Flags!=0)
{
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
if (MultiByteCount == 0)
{
return WideCharCount;
}
MaxLen = MultiByteCount > WideCharCount ? WideCharCount : MultiByteCount;
for (Count = 0; Count < MaxLen; Count++)
{
Char = WideCharString[Count];
if (Char < 0x20)
{
MultiByteString[Count] = Char;
}
else
{
if ((Char>=0xf020)&&(Char<0xf100))
{
MultiByteString[Count] = Char - 0xf000;
}
else
{
SetLastError(ERROR_NO_UNICODE_TRANSLATION);
return 0;
}
}
}
if (WideCharCount > MaxLen)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
return MaxLen;
}
/**
* @name IntWideCharToMultiByteUTF8
*
* Internal version of WideCharToMultiByte for UTF8.
*
* @see WideCharToMultiByte
*/
static INT
WINAPI
IntWideCharToMultiByteUTF8(UINT CodePage,
DWORD Flags,
LPCWSTR WideCharString,
INT WideCharCount,
LPSTR MultiByteString,
INT MultiByteCount,
LPCSTR DefaultChar,
LPBOOL UsedDefaultChar)
{
INT TempLength;
WCHAR Char;
/* Does caller query for output buffer size? */
if (MultiByteCount == 0)
{
for (TempLength = 0; WideCharCount;
WideCharCount--, WideCharString++)
{
TempLength++;
if (*WideCharString >= 0x80)
{
TempLength++;
if (*WideCharString >= 0x800)
TempLength++;
}
}
return TempLength;
}
for (TempLength = MultiByteCount; WideCharCount; WideCharCount--, WideCharString++)
{
Char = *WideCharString;
if (Char < 0x80)
{
if (!TempLength)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
break;
}
TempLength--;
*MultiByteString++ = (CHAR)Char;
continue;
}
if (Char < 0x800) /* 0x80-0x7ff: 2 bytes */
{
if (TempLength < 2)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
break;
}
MultiByteString[1] = 0x80 | (Char & 0x3f); Char >>= 6;
MultiByteString[0] = 0xc0 | Char;
MultiByteString += 2;
TempLength -= 2;
continue;
}
/* 0x800-0xffff: 3 bytes */
if (TempLength < 3)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
break;
}
MultiByteString[2] = 0x80 | (Char & 0x3f); Char >>= 6;
MultiByteString[1] = 0x80 | (Char & 0x3f); Char >>= 6;
MultiByteString[0] = 0xe0 | Char;
MultiByteString += 3;
TempLength -= 3;
}
return MultiByteCount - TempLength;
}
/**
* @name IsValidSBCSMapping
*
* Checks if ch (single-byte character) is a valid mapping for wch
*
* @see IntWideCharToMultiByteCP
*/
static
inline
BOOL
IntIsValidSBCSMapping(PCPTABLEINFO CodePageTable, DWORD Flags, WCHAR wch, UCHAR ch)
{
/* If the WC_NO_BEST_FIT_CHARS flag has been specified, the characters need to match exactly. */
if (Flags & WC_NO_BEST_FIT_CHARS)
return (CodePageTable->MultiByteTable[ch] == wch);
/* By default, all characters except TransDefaultChar apply as a valid mapping
for ch (so also "nearest" characters) */
if (ch != CodePageTable->TransDefaultChar)
return TRUE;
/* The only possible left valid mapping is the default character itself */
return (wch == CodePageTable->TransUniDefaultChar);
}
/**
* @name IsValidDBCSMapping
*
* Checks if ch (double-byte character) is a valid mapping for wch
*
* @see IntWideCharToMultiByteCP
*/
static inline BOOL
IntIsValidDBCSMapping(PCPTABLEINFO CodePageTable, DWORD Flags, WCHAR wch, USHORT ch)
{
/* If ch is the default character, but the wch is not, it can't be a valid mapping */
if (ch == CodePageTable->TransDefaultChar && wch != CodePageTable->TransUniDefaultChar)
return FALSE;
/* If the WC_NO_BEST_FIT_CHARS flag has been specified, the characters need to match exactly. */
if (Flags & WC_NO_BEST_FIT_CHARS)
{
if(ch & 0xff00)
{
USHORT uOffset = CodePageTable->DBCSOffsets[ch >> 8];
/* if (!uOffset) return (CodePageTable->MultiByteTable[ch] == wch); */
return (CodePageTable->DBCSOffsets[uOffset + (ch & 0xff)] == wch);
}
return (CodePageTable->MultiByteTable[ch] == wch);
}
/* If we're still here, we have a valid mapping */
return TRUE;
}
/**
* @name IntWideCharToMultiByteCP
*
* Internal version of WideCharToMultiByte for code page tables.
*
* @see WideCharToMultiByte
* @todo Handle WC_COMPOSITECHECK
*/
static
INT
WINAPI
IntWideCharToMultiByteCP(UINT CodePage,
DWORD Flags,
LPCWSTR WideCharString,
INT WideCharCount,
LPSTR MultiByteString,
INT MultiByteCount,
LPCSTR DefaultChar,
LPBOOL UsedDefaultChar)
{
PCODEPAGE_ENTRY CodePageEntry;
PCPTABLEINFO CodePageTable;
INT TempLength;
/* Get code page table. */
CodePageEntry = IntGetCodePageEntry(CodePage);
if (CodePageEntry == NULL)
{
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
CodePageTable = &CodePageEntry->CodePageTable;
/* Different handling for DBCS code pages. */
if (CodePageTable->MaximumCharacterSize > 1)
{
/* If Flags, DefaultChar or UsedDefaultChar were given, we have to do some more work */
if(Flags || DefaultChar || UsedDefaultChar)
{
BOOL TempUsedDefaultChar;
USHORT DefChar;
/* If UsedDefaultChar is not set, set it to a temporary value, so we don't have
to check on every character */
if(!UsedDefaultChar)
UsedDefaultChar = &TempUsedDefaultChar;
*UsedDefaultChar = FALSE;
/* Use the CodePage's TransDefaultChar if none was given. Don't modify the DefaultChar pointer here. */
if(DefaultChar)
DefChar = DefaultChar[1] ? ((DefaultChar[0] << 8) | DefaultChar[1]) : DefaultChar[0];
else
DefChar = CodePageTable->TransDefaultChar;
/* Does caller query for output buffer size? */
if(!MultiByteCount)
{
for(TempLength = 0; WideCharCount; WideCharCount--, WideCharString++, TempLength++)
{
USHORT uChar;
if ((Flags & WC_COMPOSITECHECK) && WideCharCount > 1)
{
/* FIXME: Handle WC_COMPOSITECHECK */
}
uChar = ((PUSHORT) CodePageTable->WideCharTable)[*WideCharString];
/* Verify if the mapping is valid for handling DefaultChar and UsedDefaultChar */
if (!IntIsValidDBCSMapping(CodePageTable, Flags, *WideCharString, uChar))
{
uChar = DefChar;
*UsedDefaultChar = TRUE;
}
/* Increment TempLength again if this is a double-byte character */
if (uChar & 0xff00)
TempLength++;
}
return TempLength;
}
/* Convert the WideCharString to the MultiByteString and verify if the mapping is valid */
for(TempLength = MultiByteCount;
WideCharCount && TempLength;
TempLength--, WideCharString++, WideCharCount--)
{
USHORT uChar;
if ((Flags & WC_COMPOSITECHECK) && WideCharCount > 1)
{
/* FIXME: Handle WC_COMPOSITECHECK */
}
uChar = ((PUSHORT)CodePageTable->WideCharTable)[*WideCharString];
/* Verify if the mapping is valid for handling DefaultChar and UsedDefaultChar */
if (!IntIsValidDBCSMapping(CodePageTable, Flags, *WideCharString, uChar))
{
uChar = DefChar;
*UsedDefaultChar = TRUE;
}
/* Handle double-byte characters */
if (uChar & 0xff00)
{
/* Don't output a partial character */
if (TempLength == 1)
break;
TempLength--;
*MultiByteString++ = uChar >> 8;
}
*MultiByteString++ = (char)uChar;
}
/* WideCharCount should be 0 if all characters were converted */
if (WideCharCount)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
return MultiByteCount - TempLength;
}
/* Does caller query for output buffer size? */
if (!MultiByteCount)
{
for (TempLength = 0; WideCharCount; WideCharCount--, WideCharString++, TempLength++)
{
/* Increment TempLength again if this is a double-byte character */
if (((PWCHAR)CodePageTable->WideCharTable)[*WideCharString] & 0xff00)
TempLength++;
}
return TempLength;
}
/* Convert the WideCharString to the MultiByteString */
for (TempLength = MultiByteCount;
WideCharCount && TempLength;
TempLength--, WideCharString++, WideCharCount--)
{
USHORT uChar = ((PUSHORT) CodePageTable->WideCharTable)[*WideCharString];
/* Is this a double-byte character? */
if (uChar & 0xff00)
{
/* Don't output a partial character */
if (TempLength == 1)
break;
TempLength--;
*MultiByteString++ = uChar >> 8;
}
*MultiByteString++ = (char)uChar;
}
/* WideCharCount should be 0 if all characters were converted */
if (WideCharCount)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
return MultiByteCount - TempLength;
}
else /* Not DBCS code page */
{
INT nReturn;
/* If Flags, DefaultChar or UsedDefaultChar were given, we have to do some more work */
if (Flags || DefaultChar || UsedDefaultChar)
{
BOOL TempUsedDefaultChar;
CHAR DefChar;
/* If UsedDefaultChar is not set, set it to a temporary value, so we don't have
to check on every character */
if (!UsedDefaultChar)
UsedDefaultChar = &TempUsedDefaultChar;
*UsedDefaultChar = FALSE;
/* Does caller query for output buffer size? */
if (!MultiByteCount)
{
/* Loop through the whole WideCharString and check if we can get a valid mapping for each character */
for (TempLength = 0; WideCharCount; TempLength++, WideCharString++, WideCharCount--)
{
if ((Flags & WC_COMPOSITECHECK) && WideCharCount > 1)
{
/* FIXME: Handle WC_COMPOSITECHECK */
}
if (!*UsedDefaultChar)
*UsedDefaultChar = !IntIsValidSBCSMapping(CodePageTable,
Flags,
*WideCharString,
((PCHAR)CodePageTable->WideCharTable)[*WideCharString]);
}
return TempLength;
}
/* Use the CodePage's TransDefaultChar if none was given. Don't modify the DefaultChar pointer here. */
if (DefaultChar)
DefChar = *DefaultChar;
else
DefChar = CodePageTable->TransDefaultChar;
/* Convert the WideCharString to the MultiByteString and verify if the mapping is valid */
for (TempLength = MultiByteCount;
WideCharCount && TempLength;
MultiByteString++, TempLength--, WideCharString++, WideCharCount--)
{
if ((Flags & WC_COMPOSITECHECK) && WideCharCount > 1)
{
/* FIXME: Handle WC_COMPOSITECHECK */
}
*MultiByteString = ((PCHAR)CodePageTable->WideCharTable)[*WideCharString];
if (!IntIsValidSBCSMapping(CodePageTable, Flags, *WideCharString, *MultiByteString))
{
*MultiByteString = DefChar;
*UsedDefaultChar = TRUE;
}
}
/* WideCharCount should be 0 if all characters were converted */
if (WideCharCount)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
return MultiByteCount - TempLength;
}
/* Does caller query for output buffer size? */
if (!MultiByteCount)
return WideCharCount;
/* Is the buffer large enough? */
if (MultiByteCount < WideCharCount)
{
/* Convert the string up to MultiByteCount and return 0 */
WideCharCount = MultiByteCount;
SetLastError(ERROR_INSUFFICIENT_BUFFER);
nReturn = 0;
}
else
{
/* Otherwise WideCharCount will be the number of converted characters */
nReturn = WideCharCount;
}
/* Convert the WideCharString to the MultiByteString */
for (TempLength = WideCharCount; --TempLength >= 0; WideCharString++, MultiByteString++)
{
*MultiByteString = ((PCHAR)CodePageTable->WideCharTable)[*WideCharString];
}
return nReturn;
}
}
/**
* @name IntIsLeadByte
*
* Internal function to detect if byte is lead byte in specific character
* table.
*/
static BOOL
WINAPI
IntIsLeadByte(PCPTABLEINFO TableInfo, BYTE Byte)
{
UINT i;
if (TableInfo->MaximumCharacterSize == 2)
{
for (i = 0; i < MAXIMUM_LEADBYTES && TableInfo->LeadByte[i]; i += 2)
{
if (Byte >= TableInfo->LeadByte[i] && Byte <= TableInfo->LeadByte[i+1])
return TRUE;
}
}
return FALSE;
}
/* PUBLIC FUNCTIONS ***********************************************************/
/**
* @name GetNlsSectionName
*
* Construct a name of NLS section.
*
* @param CodePage
* Code page number.
* @param Base
* Integer base used for converting to string. Usually set to 10.
* @param Unknown
* As the name suggests the meaning of this parameter is unknown.
* The native version of Kernel32 passes it as the third parameter
* to NlsConvertIntegerToString function, which is used for the
* actual conversion of the code page number.
* @param BaseName
* Base name of the section. (ex. "\\Nls\\NlsSectionCP")
* @param Result
* Buffer that will hold the constructed name.
* @param ResultSize
* Size of the buffer for the result.
*
* @return TRUE if the buffer was large enough and was filled with
* the requested information, FALSE otherwise.
*
* @implemented
*/
BOOL
WINAPI
GetNlsSectionName(UINT CodePage,
UINT Base,
ULONG Unknown,
LPSTR BaseName,
LPSTR Result,
ULONG ResultSize)
{
CHAR Integer[11];
if (!NT_SUCCESS(RtlIntegerToChar(CodePage, Base, sizeof(Integer), Integer)))
return FALSE;
/*
* If the name including the terminating NULL character doesn't
* fit in the output buffer then fail.
*/
if (strlen(Integer) + strlen(BaseName) >= ResultSize)
return FALSE;
lstrcpyA(Result, BaseName);
lstrcatA(Result, Integer);
return TRUE;
}
/**
* @name GetCPFileNameFromRegistry
*
* Get file name of code page definition file.
*
* @param CodePage
* Code page number to get file name of.
* @param FileName
* Buffer that is filled with file name of successful return. Can
* be set to NULL.
* @param FileNameSize
* Size of the buffer to hold file name in WCHARs.
*
* @return TRUE if the file name was retrieved, FALSE otherwise.
*
* @implemented
*/
BOOL
WINAPI
GetCPFileNameFromRegistry(UINT CodePage, LPWSTR FileName, ULONG FileNameSize)
{
WCHAR ValueNameBuffer[11];
UNICODE_STRING KeyName, ValueName;
OBJECT_ATTRIBUTES ObjectAttributes;
NTSTATUS Status;
HANDLE KeyHandle;
PKEY_VALUE_PARTIAL_INFORMATION Kvpi;
DWORD KvpiSize;
BOOL bRetValue;
bRetValue = FALSE;
/* Convert the codepage number to string. */
ValueName.Buffer = ValueNameBuffer;
ValueName.MaximumLength = sizeof(ValueNameBuffer);
if (!NT_SUCCESS(RtlIntegerToUnicodeString(CodePage, 10, &ValueName)))
return bRetValue;
/* Open the registry key containing file name mappings. */
RtlInitUnicodeString(&KeyName, L"\\Registry\\Machine\\System\\"
L"CurrentControlSet\\Control\\Nls\\CodePage");
InitializeObjectAttributes(&ObjectAttributes, &KeyName, OBJ_CASE_INSENSITIVE,
NULL, NULL);
Status = NtOpenKey(&KeyHandle, KEY_READ, &ObjectAttributes);
if (!NT_SUCCESS(Status))
{
return bRetValue;
}
/* Allocate buffer that will be used to query the value data. */
KvpiSize = sizeof(KEY_VALUE_PARTIAL_INFORMATION) + (MAX_PATH * sizeof(WCHAR));
Kvpi = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, KvpiSize);
if (Kvpi == NULL)
{
NtClose(KeyHandle);
return bRetValue;
}
/* Query the file name for our code page. */
Status = NtQueryValueKey(KeyHandle, &ValueName, KeyValuePartialInformation,
Kvpi, KvpiSize, &KvpiSize);
NtClose(KeyHandle);
/* Check if we succeded and the value is non-empty string. */
if (NT_SUCCESS(Status) && Kvpi->Type == REG_SZ &&
Kvpi->DataLength > sizeof(WCHAR))
{
bRetValue = TRUE;
if (FileName != NULL)
{
lstrcpynW(FileName, (WCHAR*)Kvpi->Data,
min(Kvpi->DataLength / sizeof(WCHAR), FileNameSize));
}
}
/* free temporary buffer */
HeapFree(GetProcessHeap(),0,Kvpi);
return bRetValue;
}
/**
* @name IsValidCodePage
*
* Detect if specified code page is valid and present in the system.
*
* @param CodePage
* Code page number to query.
*
* @return TRUE if code page is present.
*/
BOOL
WINAPI
IsValidCodePage(UINT CodePage)
{
if (CodePage == 0) return FALSE;
if (CodePage == CP_UTF8 || CodePage == CP_UTF7)
return TRUE;
if (IntGetLoadedCodePageEntry(CodePage))
return TRUE;
return GetCPFileNameFromRegistry(CodePage, NULL, 0);
}
static const signed char
base64inv[] =
{
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,
-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
-1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1
};
static VOID Utf7Base64Decode(BYTE *pbDest, LPCSTR pszSrc, INT cchSrc)
{
INT i, j, n;
BYTE b;
for(i = 0; i < cchSrc / 4 * 4; i += 4)
{
for(j = n = 0; j < 4; )
{
b = (BYTE) base64inv[(BYTE) *pszSrc++];
n |= (((INT) b) << ((3 - j) * 6));
j++;
}
for(j = 0; j < 3; j++)
*pbDest++ = (BYTE) ((n >> (8 * (2 - j))) & 0xFF);
}
for(j = n = 0; j < cchSrc % 4; )
{
b = (BYTE) base64inv[(BYTE) *pszSrc++];
n |= (((INT) b) << ((3 - j) * 6));
j++;
}
for(j = 0; j < ((cchSrc % 4) * 6 / 8); j++)
*pbDest++ = (BYTE) ((n >> (8 * (2 - j))) & 0xFF);
}
static VOID myswab(LPVOID pv, INT cw)
{
LPBYTE pb = (LPBYTE) pv;
BYTE b;
while(cw > 0)
{
b = *pb;
*pb = pb[1];
pb[1] = b;
pb += 2;
cw--;
}
}
static INT Utf7ToWideCharSize(LPCSTR pszUtf7, INT cchUtf7)
{
INT n, c, cch;
CHAR ch;
LPCSTR pch;
c = 0;
while(cchUtf7 > 0)
{
ch = *pszUtf7++;
if (ch == '+')
{
ch = *pszUtf7;
if (ch == '-')
{
c++;
pszUtf7++;
cchUtf7 -= 2;
continue;
}
cchUtf7--;
pch = pszUtf7;
while(cchUtf7 > 0 && (BYTE) *pszUtf7 < 0x80 &&
base64inv[*pszUtf7] >= 0)
{
cchUtf7--;
pszUtf7++;
}
cch = pszUtf7 - pch;
n = (cch * 3) / 8;
c += n;
if (cchUtf7 > 0 && *pszUtf7 == '-')
{
pszUtf7++;
cchUtf7--;
}
}
else
{
c++;
cchUtf7--;
}
}
return c;
}
static INT Utf7ToWideChar(LPCSTR pszUtf7, INT cchUtf7, LPWSTR pszWide, INT cchWide)
{
INT n, c, cch;
CHAR ch;
LPCSTR pch;
WORD *pwsz;
c = Utf7ToWideCharSize(pszUtf7, cchUtf7);
if (cchWide == 0)
return c;
if (cchWide < c)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
while(cchUtf7 > 0)
{
ch = *pszUtf7++;
if (ch == '+')
{
if (*pszUtf7 == '-')
{
*pszWide++ = L'+';
pszUtf7++;
cchUtf7 -= 2;
continue;
}
cchUtf7--;
pch = pszUtf7;
while(cchUtf7 > 0 && (BYTE) *pszUtf7 < 0x80 &&
base64inv[*pszUtf7] >= 0)
{
cchUtf7--;
pszUtf7++;
}
cch = pszUtf7 - pch;
n = (cch * 3) / 8;
pwsz = (WORD *) HeapAlloc(GetProcessHeap(), 0, (n + 1) * sizeof(WORD));
if (pwsz == NULL)
return 0;
ZeroMemory(pwsz, n * sizeof(WORD));
Utf7Base64Decode((BYTE *) pwsz, pch, cch);
myswab(pwsz, n);
CopyMemory(pszWide, pwsz, n * sizeof(WORD));
HeapFree(GetProcessHeap(), 0, pwsz);
pszWide += n;
if (cchUtf7 > 0 && *pszUtf7 == '-')
{
pszUtf7++;
cchUtf7--;
}
}
else
{
*pszWide++ = (WCHAR) ch;
cchUtf7--;
}
}
return c;
}
/**
* @name MultiByteToWideChar
*
* Convert a multi-byte string to wide-charater equivalent.
*
* @param CodePage
* Code page to be used to perform the conversion. It can be also
* one of the special values (CP_ACP for ANSI code page, CP_MACCP
* for Macintosh code page, CP_OEMCP for OEM code page, CP_THREAD_ACP
* for thread active code page, CP_UTF7 or CP_UTF8).
* @param Flags
* Additional conversion flags (MB_PRECOMPOSED, MB_COMPOSITE,
* MB_ERR_INVALID_CHARS, MB_USEGLYPHCHARS).
* @param MultiByteString
* Input buffer.
* @param MultiByteCount
* Size of MultiByteString, or -1 if MultiByteString is NULL
* terminated.
* @param WideCharString
* Output buffer.
* @param WideCharCount
* Size in WCHARs of WideCharString, or 0 if the caller just wants
* to know how large WideCharString should be for a successful
* conversion.
*
* @return Zero on error, otherwise the number of WCHARs written
* in the WideCharString buffer.
*
* @implemented
*/
INT
WINAPI
MultiByteToWideChar(UINT CodePage,
DWORD Flags,
LPCSTR MultiByteString,
INT MultiByteCount,
LPWSTR WideCharString,
INT WideCharCount)
{
/* Check the parameters. */
if (MultiByteString == NULL ||
(WideCharString == NULL && WideCharCount > 0) ||
(PVOID)MultiByteString == (PVOID)WideCharString)
{
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
/* Determine the input string length. */
if (MultiByteCount < 0)
{
MultiByteCount = lstrlenA(MultiByteString) + 1;
}
switch (CodePage)
{
case CP_UTF8:
return IntMultiByteToWideCharUTF8(Flags,
MultiByteString,
MultiByteCount,
WideCharString,
WideCharCount);
case CP_UTF7:
if (Flags)
{
SetLastError(ERROR_INVALID_FLAGS);
return 0;
}
return Utf7ToWideChar(MultiByteString, MultiByteCount,
WideCharString, WideCharCount);
case CP_SYMBOL:
return IntMultiByteToWideCharSYMBOL(Flags,
MultiByteString,
MultiByteCount,
WideCharString,
WideCharCount);
default:
return IntMultiByteToWideCharCP(CodePage,
Flags,
MultiByteString,
MultiByteCount,
WideCharString,
WideCharCount);
}
}
static const char mustshift[] =
{
0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0,
1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1,
1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1
};
static const char base64[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
static INT WideCharToUtf7Size(LPCWSTR pszWide, INT cchWide)
{
WCHAR wch;
INT c = 0;
BOOL fShift = FALSE;
while(cchWide > 0)
{
wch = *pszWide;
if (wch < 0x80 && !mustshift[wch])
{
c++;
cchWide--;
pszWide++;
}
else
{
if (wch == L'+')
{
c++;
c++;
cchWide--;
pszWide++;
continue;
}
if (!fShift)
{
c++;
fShift = TRUE;
}
pszWide++;
cchWide--;
c += 3;
if (cchWide > 0 && (*pszWide >= 0x80 || mustshift[*pszWide]))
{
pszWide++;
cchWide--;
c += 3;
if (cchWide > 0 && (*pszWide >= 0x80 || mustshift[*pszWide]))
{
pszWide++;
cchWide--;
c += 2;
}
}
if (cchWide > 0 && *pszWide < 0x80 && !mustshift[*pszWide])
{
c++;
fShift = FALSE;
}
}
}
if (fShift)
c++;
return c;
}
static INT WideCharToUtf7(LPCWSTR pszWide, INT cchWide, LPSTR pszUtf7, INT cchUtf7)
{
WCHAR wch;
INT c, n;
WCHAR wsz[3];
BOOL fShift = FALSE;
c = WideCharToUtf7Size(pszWide, cchWide);
if (cchUtf7 == 0)
return c;
if (cchUtf7 < c)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
while(cchWide > 0)
{
wch = *pszWide;
if (wch < 0x80 && !mustshift[wch])
{
*pszUtf7++ = (CHAR) wch;
cchWide--;
pszWide++;
}
else
{
if (wch == L'+')
{
*pszUtf7++ = '+';
*pszUtf7++ = '-';
cchWide--;
pszWide++;
continue;
}
if (!fShift)
{
*pszUtf7++ = '+';
fShift = TRUE;
}
wsz[0] = *pszWide++;
cchWide--;
n = 1;
if (cchWide > 0 && (*pszWide >= 0x80 || mustshift[*pszWide]))
{
wsz[1] = *pszWide++;
cchWide--;
n++;
if (cchWide > 0 && (*pszWide >= 0x80 || mustshift[*pszWide]))
{
wsz[2] = *pszWide++;
cchWide--;
n++;
}
}
*pszUtf7++ = base64[wsz[0] >> 10];
*pszUtf7++ = base64[(wsz[0] >> 4) & 0x3F];
*pszUtf7++ = base64[(wsz[0] << 2 | wsz[1] >> 14) & 0x3F];
if (n >= 2)
{
*pszUtf7++ = base64[(wsz[1] >> 8) & 0x3F];
*pszUtf7++ = base64[(wsz[1] >> 2) & 0x3F];
*pszUtf7++ = base64[(wsz[1] << 4 | wsz[2] >> 12) & 0x3F];
if (n >= 3)
{
*pszUtf7++ = base64[(wsz[2] >> 6) & 0x3F];
*pszUtf7++ = base64[wsz[2] & 0x3F];
}
}
if (cchWide > 0 && *pszWide < 0x80 && !mustshift[*pszWide])
{
*pszUtf7++ = '-';
fShift = FALSE;
}
}
}
if (fShift)
*pszUtf7 = '-';
return c;
}
/**
* @name WideCharToMultiByte
*
* Convert a wide-charater string to closest multi-byte equivalent.
*
* @param CodePage
* Code page to be used to perform the conversion. It can be also
* one of the special values (CP_ACP for ANSI code page, CP_MACCP
* for Macintosh code page, CP_OEMCP for OEM code page, CP_THREAD_ACP
* for thread active code page, CP_UTF7 or CP_UTF8).
* @param Flags
* Additional conversion flags (WC_NO_BEST_FIT_CHARS, WC_COMPOSITECHECK,
* WC_DISCARDNS, WC_SEPCHARS, WC_DEFAULTCHAR).
* @param WideCharString
* Points to the wide-character string to be converted.
* @param WideCharCount
* Size in WCHARs of WideCharStr, or 0 if the caller just wants to
* know how large WideCharString should be for a successful conversion.
* @param MultiByteString
* Points to the buffer to receive the translated string.
* @param MultiByteCount
* Specifies the size in bytes of the buffer pointed to by the
* MultiByteString parameter. If this value is zero, the function
* returns the number of bytes required for the buffer.
* @param DefaultChar
* Points to the character used if a wide character cannot be
* represented in the specified code page. If this parameter is
* NULL, a system default value is used.
* @param UsedDefaultChar
* Points to a flag that indicates whether a default character was
* used. This parameter can be NULL.
*
* @return Zero on error, otherwise the number of bytes written in the
* MultiByteString buffer. Or the number of bytes needed for
* the MultiByteString buffer if MultiByteCount is zero.
*
* @implemented
*/
INT
WINAPI
WideCharToMultiByte(UINT CodePage,
DWORD Flags,
LPCWSTR WideCharString,
INT WideCharCount,
LPSTR MultiByteString,
INT MultiByteCount,
LPCSTR DefaultChar,
LPBOOL UsedDefaultChar)
{
/* Check the parameters. */
if (WideCharString == NULL ||
(MultiByteString == NULL && MultiByteCount > 0) ||
(PVOID)WideCharString == (PVOID)MultiByteString ||
MultiByteCount < 0)
{
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
/* Determine the input string length. */
if (WideCharCount < 0)
{
WideCharCount = lstrlenW(WideCharString) + 1;
}
switch (CodePage)
{
case CP_UTF8:
return IntWideCharToMultiByteUTF8(CodePage,
Flags,
WideCharString,
WideCharCount,
MultiByteString,
MultiByteCount,
DefaultChar,
UsedDefaultChar);
case CP_UTF7:
if (DefaultChar != NULL || UsedDefaultChar != NULL)
{
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
if (Flags)
{
SetLastError(ERROR_INVALID_FLAGS);
return 0;
}
return WideCharToUtf7(WideCharString, WideCharCount,
MultiByteString, MultiByteCount);
case CP_SYMBOL:
if ((DefaultChar!=NULL) || (UsedDefaultChar!=NULL))
{
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
return IntWideCharToMultiByteSYMBOL(Flags,
WideCharString,
WideCharCount,
MultiByteString,
MultiByteCount);
default:
return IntWideCharToMultiByteCP(CodePage,
Flags,
WideCharString,
WideCharCount,
MultiByteString,
MultiByteCount,
DefaultChar,
UsedDefaultChar);
}
}
/**
* @name GetACP
*
* Get active ANSI code page number.
*
* @implemented
*/
UINT
WINAPI
GetACP(VOID)
{
return AnsiCodePage.CodePageTable.CodePage;
}
/**
* @name GetOEMCP
*
* Get active OEM code page number.
*
* @implemented
*/
UINT
WINAPI
GetOEMCP(VOID)
{
return OemCodePage.CodePageTable.CodePage;
}
/**
* @name IsDBCSLeadByteEx
*
* Determine if passed byte is lead byte in specified code page.
*
* @implemented
*/
BOOL
WINAPI
IsDBCSLeadByteEx(UINT CodePage, BYTE TestByte)
{
PCODEPAGE_ENTRY CodePageEntry;
CodePageEntry = IntGetCodePageEntry(CodePage);
if (CodePageEntry != NULL)
return IntIsLeadByte(&CodePageEntry->CodePageTable, TestByte);
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
/**
* @name IsDBCSLeadByteEx
*
* Determine if passed byte is lead byte in current ANSI code page.
*
* @implemented
*/
BOOL
WINAPI
IsDBCSLeadByte(BYTE TestByte)
{
return IntIsLeadByte(&AnsiCodePage.CodePageTable, TestByte);
}
/* EOF */
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