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Implement IntWideCharToMultiByteUTF8 since it's needed for saving Explorer configuration. (This change should be ported to the release branch.)

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svn path=/trunk/; revision=10748
This commit is contained in:
Filip Navara 2004-08-31 07:01:43 +00:00
parent 67d68774ab
commit d4aa975e56
1 changed files with 64 additions and 2 deletions
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66
reactos/lib/kernel32/misc/nls.c
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@ -440,8 +440,70 @@ IntWideCharToMultiByteUTF8(UINT CodePage, DWORD Flags,
LPSTR MultiByteString, INT MultiByteCount,
LPCSTR DefaultChar, LPBOOL UsedDefaultChar)
{
DPRINT1("WideCharToMultiByte for CP_UTF8 is not implemented!\n");
return 0;
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;
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;
}
/**