BOOL IsValidWideChar(char16 ch)
{
return (ch < 0xfdd0) || ((ch > 0xfdef) && (ch <= 0xffef)) || ((ch >= 0xfff9) && (ch <= 0xfffd));
}
inline BOOL IsHighSurrogateChar(char16 ch)
{
return InRange( ch, WCH_UTF16_HIGH_FIRST, WCH_UTF16_HIGH_LAST );
}
inline BOOL IsLowSurrogateChar(char16 ch)
{
return InRange( ch, WCH_UTF16_LOW_FIRST, WCH_UTF16_LOW_LAST );
}
_At_(ptr, _In_reads_(end - ptr) _Post_satisfies_(ptr >= _Old_(ptr) - 1 && ptr <= end))
inline char16 DecodeTail(char16 c1, LPCUTF8& ptr, LPCUTF8 end, DecodeOptions& options, bool *chunkEndsAtTruncatedSequence)
{
char16 ch = 0;
BYTE c2, c3, c4;
switch (EncodedBytes(c1))
{
case 1:
if (c1 < 0x80) return c1;
if ((options & doSecondSurrogatePair) != 0)
{
// We're in the middle of decoding a surrogate pair from a four-byte utf8 sequence.
// The high word has already been returned, but without advancing ptr, which was on byte 1.
// ptr was then advanced externally when reading c1, which is byte 1, so ptr is now on byte 2.
#ifdef ALLOC_PRAGMA
#pragma alloc_text(PAGE, CdConvertBigToLittleEndian)
#pragma alloc_text(PAGE, CdConvertNameToCdName)
#pragma alloc_text(PAGE, CdDissectName)
#pragma alloc_text(PAGE, CdGenerate8dot3Name)
#pragma alloc_text(PAGE, CdFullCompareNames)
#pragma alloc_text(PAGE, CdIsLegalName)
#pragma alloc_text(PAGE, CdIs8dot3Name)
#pragma alloc_text(PAGE, CdIsNameInExpression)
#pragma alloc_text(PAGE, CdShortNameDirentOffset)
#pragma alloc_text(PAGE, CdUpcaseName)
#endif
_Post_satisfies_(_Old_(CdName->FileName.Length) >=
CdName->FileName.Length + CdName->VersionString.Length)
VOID
CdConvertNameToCdName (
_In_ PIRP_CONTEXT IrpContext,
_Inout_ PCD_NAME CdName
)
/*++
Routine Description:
This routine is called to convert a string of bytes into a CdName.
The full name is already in the CdName structure in the FileName field.
We split this into the filename and version strings.