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reactos/dll/win32/kernel32/winnls/string/nls.c

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/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS system libraries
* FILE: dll/win32/kernel32/winnls/string/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.SectionHandle = NULL;
AnsiCodePage.SectionMapping = NtCurrentTeb()->ProcessEnvironmentBlock->AnsiCodePageData;
RtlInitCodePageTable((PUSHORT)AnsiCodePage.SectionMapping,
&AnsiCodePage.CodePageTable);
AnsiCodePage.CodePage = AnsiCodePage.CodePageTable.CodePage;
InsertTailList(&CodePageListHead, &AnsiCodePage.Entry);
/* Setup OEM code page. */
OemCodePage.SectionHandle = NULL;
OemCodePage.SectionMapping = NtCurrentTeb()->ProcessEnvironmentBlock->OemCodePageData;
RtlInitCodePageTable((PUSHORT)OemCodePage.SectionMapping,
&OemCodePage.CodePageTable);
OemCodePage.CodePage = OemCodePage.CodePageTable.CodePage;
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_ACP)
{
return &AnsiCodePage;
}
else if (CodePage == CP_OEMCP)
{
return &OemCodePage;
}
else 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;
}
if (CodePage == 0)
return &AnsiCodePage;
}
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_COMMIT,
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 && Flags != MB_ERR_INVALID_CHARS)
{
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;
PUSHORT MultiByteTable;
LPCSTR TempString;
INT TempLength;
USHORT WideChar;
/* Get code page table. */
CodePageEntry = IntGetCodePageEntry(CodePage);
if (CodePageEntry == NULL)
{
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
CodePageTable = &CodePageEntry->CodePageTable;
/* If MB_USEGLYPHCHARS flag present and glyph table present */
if ((Flags & MB_USEGLYPHCHARS) && CodePageTable->MultiByteTable[256])
{
/* Use glyph table */
MultiByteTable = CodePageTable->MultiByteTable + 256 + 1;
}
else
{
MultiByteTable = CodePageTable->MultiByteTable;
}
/* Different handling for DBCS code pages. */
if (CodePageTable->DBCSCodePage)
{
UCHAR Char;
USHORT DBCSOffset;
LPCSTR MbsEnd = MultiByteString + MultiByteCount;
INT Count;
if (Flags & MB_ERR_INVALID_CHARS)
{
TempString = MultiByteString;
while (TempString < MbsEnd)
{
DBCSOffset = CodePageTable->DBCSOffsets[(UCHAR)*TempString];
if (DBCSOffset)
{
/* If lead byte is presented, but behind it there is no symbol */
if (((TempString + 1) == MbsEnd) || (*(TempString + 1) == 0))
{
SetLastError(ERROR_NO_UNICODE_TRANSLATION);
return 0;
}
WideChar = CodePageTable->DBCSOffsets[DBCSOffset + *(TempString + 1)];
if (WideChar == CodePageTable->UniDefaultChar &&
MAKEWORD(*(TempString + 1), *TempString) != CodePageTable->TransUniDefaultChar)
{
SetLastError(ERROR_NO_UNICODE_TRANSLATION);
return 0;
}
TempString++;
}
else
{
WideChar = MultiByteTable[(UCHAR)*TempString];
if ((WideChar == CodePageTable->UniDefaultChar &&
*TempString != CodePageTable->TransUniDefaultChar) ||
/* "Private Use" characters */
(WideChar >= 0xE000 && WideChar <= 0xF8FF))
{
SetLastError(ERROR_NO_UNICODE_TRANSLATION);
return 0;
}
}
TempString++;
}
}
/* Does caller query for output buffer size? */
if (WideCharCount == 0)
{
for (; MultiByteString < MbsEnd; WideCharCount++)
{
Char = *MultiByteString++;
DBCSOffset = CodePageTable->DBCSOffsets[Char];
if (!DBCSOffset)
continue;
if (MultiByteString < MbsEnd)
MultiByteString++;
}
return WideCharCount;
}
for (Count = 0; Count < WideCharCount && MultiByteString < MbsEnd; Count++)
{
Char = *MultiByteString++;
DBCSOffset = CodePageTable->DBCSOffsets[Char];
if (!DBCSOffset)
{
*WideCharString++ = MultiByteTable[Char];
continue;
}
if (MultiByteString == MbsEnd)
{
*WideCharString++ = UNICODE_NULL;
}
else if (*MultiByteString == 0)
{
*WideCharString++ = UNICODE_NULL;
MultiByteString++;
}
else
{
*WideCharString++ = CodePageTable->DBCSOffsets[DBCSOffset + (UCHAR)*MultiByteString++];
}
}
if (MultiByteString < MbsEnd)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
return Count;
}
else /* SBCS code page */
{
/* Check for invalid characters. */
if (Flags & MB_ERR_INVALID_CHARS)
{
for (TempString = MultiByteString, TempLength = MultiByteCount;
TempLength > 0;
TempString++, TempLength--)
{
WideChar = MultiByteTable[(UCHAR)*TempString];
if ((WideChar == CodePageTable->UniDefaultChar &&
*TempString != CodePageTable->TransUniDefaultChar) ||
/* "Private Use" characters */
(WideChar >= 0xE000 && WideChar <= 0xF8FF))
{
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++ = 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)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;
DWORD Char;
if (Flags)
{
SetLastError(ERROR_INVALID_FLAGS);
return 0;
}
/* 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++;
if (*WideCharString >= 0xd800 && *WideCharString < 0xdc00 &&
WideCharCount >= 1 &&
WideCharString[1] >= 0xdc00 && WideCharString[1] <= 0xe000)
{
WideCharCount--;
WideCharString++;
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;
}
/* surrogate pair 0x10000-0x10ffff: 4 bytes */
if (Char >= 0xd800 && Char < 0xdc00 &&
WideCharCount >= 1 &&
WideCharString[1] >= 0xdc00 && WideCharString[1] < 0xe000)
{
WideCharCount--;
WideCharString++;
if (TempLength < 4)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
break;
}
Char = (Char - 0xd800) << 10;
Char |= *WideCharString - 0xdc00;
ASSERT(Char <= 0xfffff);
Char += 0x10000;
ASSERT(Char <= 0x10ffff);
MultiByteString[3] = 0x80 | (Char & 0x3f); Char >>= 6;
MultiByteString[2] = 0x80 | (Char & 0x3f); Char >>= 6;
MultiByteString[1] = 0x80 | (Char & 0x3f); Char >>= 6;
MultiByteString[0] = 0xf0 | Char;
MultiByteString += 4;
TempLength -= 4;
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->DBCSCodePage)
{
/* 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 */
DPRINT("WC_COMPOSITECHECK flag UNIMPLEMENTED\n");
}
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 */
DPRINT("WC_COMPOSITECHECK flag UNIMPLEMENTED\n");
}
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 /* SBCS 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 */
DPRINT("WC_COMPOSITECHECK flag UNIMPLEMENTED\n");
}
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 = (CHAR)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 */
DPRINT("WC_COMPOSITECHECK flag UNIMPLEMENTED\n");
}
*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 inline BOOL utf7_write_w(WCHAR *dst, int dstlen, int *index, WCHAR character)
{
if (dstlen > 0)
{
if (*index >= dstlen)
return FALSE;
dst[*index] = character;
}
(*index)++;
return TRUE;
}
static INT Utf7ToWideChar(const char *src, int srclen, WCHAR *dst, int dstlen)
{
static const signed char base64_decoding_table[] =
{
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x00-0x0F */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x10-0x1F */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, /* 0x20-0x2F */
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, /* 0x30-0x3F */
-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, /* 0x40-0x4F */
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, /* 0x50-0x5F */
-1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, /* 0x60-0x6F */
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1 /* 0x70-0x7F */
};
const char *source_end = src + srclen;
int dest_index = 0;
DWORD byte_pair = 0;
short offset = 0;
while (src < source_end)
{
if (*src == '+')
{
src++;
if (src >= source_end)
break;
if (*src == '-')
{
/* just a plus sign escaped as +- */
if (!utf7_write_w(dst, dstlen, &dest_index, '+'))
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
src++;
continue;
}
do
{
signed char sextet = *src;
if (sextet == '-')
{
/* skip over the dash and end base64 decoding
* the current, unfinished byte pair is discarded */
src++;
offset = 0;
break;
}
if (sextet < 0)
{
/* the next character of src is < 0 and therefore not part of a base64 sequence
* the current, unfinished byte pair is NOT discarded in this case
* this is probably a bug in Windows */
break;
}
sextet = base64_decoding_table[sextet];
if (sextet == -1)
{
/* -1 means that the next character of src is not part of a base64 sequence
* in other words, all sextets in this base64 sequence have been processed
* the current, unfinished byte pair is discarded */
offset = 0;
break;
}
byte_pair = (byte_pair << 6) | sextet;
offset += 6;
if (offset >= 16)
{
/* this byte pair is done */
if (!utf7_write_w(dst, dstlen, &dest_index, (byte_pair >> (offset - 16)) & 0xFFFF))
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
offset -= 16;
}
src++;
}
while (src < source_end);
}
else
{
/* we have to convert to unsigned char in case *src < 0 */
if (!utf7_write_w(dst, dstlen, &dest_index, (unsigned char)*src))
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
src++;
}
}
return dest_index;
}
/**
* @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 ||
MultiByteCount == 0 || WideCharCount < 0 ||
(WideCharCount && (WideCharString == NULL ||
(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 inline BOOL utf7_can_directly_encode(WCHAR codepoint)
{
static const BOOL directly_encodable_table[] =
{
1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, /* 0x00 - 0x0F */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x10 - 0x1F */
1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, /* 0x20 - 0x2F */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, /* 0x30 - 0x3F */
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x40 - 0x4F */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, /* 0x50 - 0x5F */
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x60 - 0x6F */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 /* 0x70 - 0x7A */
};
return codepoint <= 0x7A ? directly_encodable_table[codepoint] : FALSE;
}
static inline BOOL utf7_write_c(char *dst, int dstlen, int *index, char character)
{
if (dstlen > 0)
{
if (*index >= dstlen)
return FALSE;
dst[*index] = character;
}
(*index)++;
return TRUE;
}
static INT WideCharToUtf7(const WCHAR *src, int srclen, char *dst, int dstlen)
{
static const char base64_encoding_table[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
const WCHAR *source_end = src + srclen;
int dest_index = 0;
while (src < source_end)
{
if (*src == '+')
{
if (!utf7_write_c(dst, dstlen, &dest_index, '+'))
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
if (!utf7_write_c(dst, dstlen, &dest_index, '-'))
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
src++;
}
else if (utf7_can_directly_encode(*src))
{
if (!utf7_write_c(dst, dstlen, &dest_index, *src))
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
src++;
}
else
{
unsigned int offset = 0;
DWORD byte_pair = 0;
if (!utf7_write_c(dst, dstlen, &dest_index, '+'))
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
while (src < source_end && !utf7_can_directly_encode(*src))
{
byte_pair = (byte_pair << 16) | *src;
offset += 16;
while (offset >= 6)
{
if (!utf7_write_c(dst, dstlen, &dest_index, base64_encoding_table[(byte_pair >> (offset - 6)) & 0x3F]))
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
offset -= 6;
}
src++;
}
if (offset)
{
/* Windows won't create a padded base64 character if there's no room for the - sign
* as well ; this is probably a bug in Windows */
if (dstlen > 0 && dest_index + 1 >= dstlen)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
byte_pair <<= (6 - offset);
if (!utf7_write_c(dst, dstlen, &dest_index, base64_encoding_table[byte_pair & 0x3F]))
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
}
/* Windows always explicitly terminates the base64 sequence
even though RFC 2152 (page 3, rule 2) does not require this */
if (!utf7_write_c(dst, dstlen, &dest_index, '-'))
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
}
}
return dest_index;
}
/*
* A function similar to LoadStringW, but adapted for usage by GetCPInfoExW
* and GetGeoInfoW. It uses the current user localization, otherwise falls back
* to English (US). Contrary to LoadStringW which always saves the loaded string
* into the user-given buffer, truncating the string if needed, this function
* returns instead an ERROR_INSUFFICIENT_BUFFER error code if the user buffer
* is not large enough.
*/
UINT
GetLocalisedText(
IN UINT uID,
IN LPWSTR lpszDest,
IN UINT cchDest)
{
HRSRC hrsrc;
HGLOBAL hmem;
LCID lcid;
LANGID langId;
const WCHAR *p;
UINT i;
/* See HACK in winnls/lang/xx-XX.rc files */
if (uID == 37)
uID = uID * 100;
lcid = GetUserDefaultLCID();
lcid = ConvertDefaultLocale(lcid);
langId = LANGIDFROMLCID(lcid);
if (PRIMARYLANGID(langId) == LANG_NEUTRAL)
langId = MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US);
hrsrc = FindResourceExW(hCurrentModule,
(LPWSTR)RT_STRING,
MAKEINTRESOURCEW((uID >> 4) + 1),
langId);
/* English fallback */
if (!hrsrc)
{
hrsrc = FindResourceExW(hCurrentModule,
(LPWSTR)RT_STRING,
MAKEINTRESOURCEW((uID >> 4) + 1),
MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US));
}
if (!hrsrc)
goto NotFound;
hmem = LoadResource(hCurrentModule, hrsrc);
if (!hmem)
goto NotFound;
p = LockResource(hmem);
for (i = 0; i < (uID & 0x0F); i++)
p += *p + 1;
/* Needed for GetGeoInfo(): return the needed string size including the NULL terminator */
if (cchDest == 0)
return *p + 1;
/* Needed for GetGeoInfo(): bail out if the user buffer is not large enough */
if (*p + 1 > cchDest)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
i = *p;
if (i > 0)
{
memcpy(lpszDest, p + 1, i * sizeof(WCHAR));
lpszDest[i] = L'\0';
return i;
}
#if 0
else
{
if (cchDest >= 1)
lpszDest[0] = L'\0';
/* Fall-back */
}
#endif
NotFound:
DPRINT1("Resource not found: uID = %lu\n", uID);
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
/*
* @implemented
*/
BOOL
WINAPI
GetCPInfo(UINT CodePage,
LPCPINFO CodePageInfo)
{
PCODEPAGE_ENTRY CodePageEntry;
if (!CodePageInfo)
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
CodePageEntry = IntGetCodePageEntry(CodePage);
if (CodePageEntry == NULL)
{
switch(CodePage)
{
case CP_UTF7:
case CP_UTF8:
CodePageInfo->DefaultChar[0] = 0x3f;
CodePageInfo->DefaultChar[1] = 0;
CodePageInfo->LeadByte[0] = CodePageInfo->LeadByte[1] = 0;
CodePageInfo->MaxCharSize = (CodePage == CP_UTF7) ? 5 : 4;
return TRUE;
}
DPRINT1("Invalid CP!: %lx\n", CodePage);
SetLastError( ERROR_INVALID_PARAMETER );
return FALSE;
}
if (CodePageEntry->CodePageTable.DefaultChar & 0xff00)
{
CodePageInfo->DefaultChar[0] = (CodePageEntry->CodePageTable.DefaultChar & 0xff00) >> 8;
CodePageInfo->DefaultChar[1] = CodePageEntry->CodePageTable.DefaultChar & 0x00ff;
}
else
{
CodePageInfo->DefaultChar[0] = CodePageEntry->CodePageTable.DefaultChar & 0xff;
CodePageInfo->DefaultChar[1] = 0;
}
if ((CodePageInfo->MaxCharSize = CodePageEntry->CodePageTable.MaximumCharacterSize) == 2)
memcpy(CodePageInfo->LeadByte, CodePageEntry->CodePageTable.LeadByte, sizeof(CodePageInfo->LeadByte));
else
CodePageInfo->LeadByte[0] = CodePageInfo->LeadByte[1] = 0;
return TRUE;
}
/*
* @implemented
*/
BOOL
WINAPI
GetCPInfoExW(UINT CodePage,
DWORD dwFlags,
LPCPINFOEXW lpCPInfoEx)
{
if (!GetCPInfo(CodePage, (LPCPINFO)lpCPInfoEx))
return FALSE;
switch(CodePage)
{
case CP_UTF7:
{
lpCPInfoEx->CodePage = CP_UTF7;
lpCPInfoEx->UnicodeDefaultChar = 0x3f;
return GetLocalisedText(lpCPInfoEx->CodePage,
lpCPInfoEx->CodePageName,
ARRAYSIZE(lpCPInfoEx->CodePageName)) != 0;
}
break;
case CP_UTF8:
{
lpCPInfoEx->CodePage = CP_UTF8;
lpCPInfoEx->UnicodeDefaultChar = 0x3f;
return GetLocalisedText(lpCPInfoEx->CodePage,
lpCPInfoEx->CodePageName,
ARRAYSIZE(lpCPInfoEx->CodePageName)) != 0;
}
default:
{
PCODEPAGE_ENTRY CodePageEntry;
CodePageEntry = IntGetCodePageEntry(CodePage);
if (CodePageEntry == NULL)
{
DPRINT1("Could not get CodePage Entry! CodePageEntry = NULL\n");
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
lpCPInfoEx->CodePage = CodePageEntry->CodePageTable.CodePage;
lpCPInfoEx->UnicodeDefaultChar = CodePageEntry->CodePageTable.UniDefaultChar;
return GetLocalisedText(lpCPInfoEx->CodePage,
lpCPInfoEx->CodePageName,
ARRAYSIZE(lpCPInfoEx->CodePageName)) != 0;
}
break;
}
}
/*
* @implemented
*/
BOOL
WINAPI
GetCPInfoExA(UINT CodePage,
DWORD dwFlags,
LPCPINFOEXA lpCPInfoEx)
{
CPINFOEXW CPInfo;
if (!GetCPInfoExW(CodePage, dwFlags, &CPInfo))
return FALSE;
/* the layout is the same except for CodePageName */
memcpy(lpCPInfoEx, &CPInfo, sizeof(CPINFOEXA));
WideCharToMultiByte(CP_ACP,
0,
CPInfo.CodePageName,
-1,
lpCPInfoEx->CodePageName,
sizeof(lpCPInfoEx->CodePageName),
NULL,
NULL);
return TRUE;
}
/**
* @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 ||
WideCharCount == 0 ||
(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:
if (DefaultChar != NULL || UsedDefaultChar != NULL)
{
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
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);
}
/*
* @unimplemented
*/
NTSTATUS WINAPI CreateNlsSecurityDescriptor(PSECURITY_DESCRIPTOR SecurityDescriptor,ULONG Size,ULONG AccessMask)
{
STUB;
return 0;
}
/*
* @unimplemented
*/
BOOL WINAPI IsValidUILanguage(LANGID langid)
{
STUB;
return 0;
}
/*
* @unimplemented
*/
VOID WINAPI NlsConvertIntegerToString(ULONG Value,ULONG Base,ULONG strsize, LPWSTR str, ULONG strsize2)
{
STUB;
}
/*
* @unimplemented
*/
UINT WINAPI SetCPGlobal(UINT CodePage)
{
STUB;
return 0;
}
/*
* @unimplemented
*/
BOOL
WINAPI
ValidateLCType(int a1, unsigned int a2, int a3, int a4)
{
STUB;
return FALSE;
}
/*
* @unimplemented
*/
BOOL
WINAPI
NlsResetProcessLocale(VOID)
{
STUB;
return TRUE;
}
/*
* @unimplemented
*/
VOID
WINAPI
GetDefaultSortkeySize(LPVOID lpUnknown)
{
STUB;
lpUnknown = NULL;
}
/*
* @unimplemented
*/
VOID
WINAPI
GetLinguistLangSize(LPVOID lpUnknown)
{
STUB;
lpUnknown = NULL;
}
/*
* @unimplemented
*/
BOOL
WINAPI
ValidateLocale(IN ULONG LocaleId)
{
STUB;
return TRUE;
}
/*
* @unimplemented
*/
ULONG
WINAPI
NlsGetCacheUpdateCount(VOID)
{
STUB;
return 0;
}
/*
* @unimplemented
*/
BOOL
WINAPI
IsNLSDefinedString(IN NLS_FUNCTION Function,
IN DWORD dwFlags,
IN LPNLSVERSIONINFO lpVersionInformation,
IN LPCWSTR lpString,
IN INT cchStr)
{
STUB;
return TRUE;
}
/*
* @unimplemented
*/
BOOL
WINAPI
GetNLSVersion(IN NLS_FUNCTION Function,
IN LCID Locale,
IN OUT LPNLSVERSIONINFO lpVersionInformation)
{
STUB;
return TRUE;
}
/* EOF */
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