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- Replaced _wcsnicmp with RtlEqualUnicodeString.

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- Replaced wcscpy with memcpy if the length of the string is known.
- Used string functions instaed of iteration code.

svn path=/trunk/; revision=5023
This commit is contained in:
Hartmut Birr 2003-07-09 20:11:41 +00:00
parent 0efd005774
commit edd824b265
1 changed files with 140 additions and 56 deletions
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196
reactos/lib/ntdll/rtl/path.c
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@ -1,4 +1,4 @@
/* $Id: path.c,v 1.18 2003/05/06 06:49:57 gvg Exp $
/* $Id: path.c,v 1.19 2003/07/09 20:11:41 hbirr Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS system libraries
@ -26,6 +26,56 @@
#define IS_PATH_SEPARATOR(x) (((x)==L'\\')||((x)==L'/'))
/* GLOBALS ********************************************************************/
static const UNICODE_STRING _condev =
{
.Length = sizeof(L"\\\\.\\CON") - sizeof(WCHAR),
.MaximumLength = sizeof(L"\\\\.\\CON"),
.Buffer = L"\\\\.\\CON"
};
static const UNICODE_STRING _lpt =
{
.Length = sizeof(L"LPT") - sizeof(WCHAR),
.MaximumLength = sizeof(L"LPT"),
.Buffer = L"LPT"
};
static const UNICODE_STRING _com =
{
.Length = sizeof(L"COM") - sizeof(WCHAR),
.MaximumLength = sizeof(L"COM"),
.Buffer = L"COM"
};
static const UNICODE_STRING _prn =
{
.Length = sizeof(L"PRN") - sizeof(WCHAR),
.MaximumLength = sizeof(L"PRN"),
.Buffer = L"PRN"
};
static const UNICODE_STRING _aux =
{
.Length = sizeof(L"AUX") - sizeof(WCHAR),
.MaximumLength = sizeof(L"AUX"),
.Buffer = L"AUX"
};
static const UNICODE_STRING _con =
{
.Length = sizeof(L"CON") - sizeof(WCHAR),
.MaximumLength = sizeof(L"CON"),
.Buffer = L"CON"
};
static const UNICODE_STRING _nul =
{
.Length = sizeof(L"NUL") - sizeof(WCHAR),
.MaximumLength = sizeof(L"NUL"),
.Buffer = L"NUL"
};
/* FUNCTIONS *****************************************************************/
@ -60,16 +110,16 @@ static VOID RtlpEatPath (PWSTR Path)
DotLen = RtlpGetDotSequence (p+1);
DPRINT("DotSequenceLength %u\n", DotLen);
DPRINT("prev %S p %S\n",prev,p);
if (DotLen == 0)
DPRINT("prev '%S' p '%S'\n",prev,p);
if (DotLen == 0)
{
prev = p;
do
{
p++;
}
while ((*p) != 0 && (*p) != L'\\');
p = wcschr(p + 1, L'\\');
if (p == NULL)
{
break;
}
}
else if (DotLen == 1)
{
@ -170,6 +220,7 @@ RtlIsDosDeviceName_U(PWSTR DeviceName)
ULONG Length = 0;
ULONG Offset;
PWCHAR wc;
UNICODE_STRING DeviceNameU;
if (DeviceName == NULL)
{
@ -189,8 +240,10 @@ RtlIsDosDeviceName_U(PWSTR DeviceName)
if (Type == 6)
{
DeviceNameU.Length = DeviceNameU.MaximumLength = Length * sizeof(WCHAR);
DeviceNameU.Buffer = DeviceName;
if (Length == 7 &&
!_wcsnicmp (DeviceName, L"\\\\.\\CON", 7))
RtlEqualUnicodeString(&DeviceNameU, (PUNICODE_STRING)&_condev, TRUE))
return 0x00080006;
return 0;
}
@ -217,6 +270,8 @@ RtlIsDosDeviceName_U(PWSTR DeviceName)
}
Offset = wc - DeviceName;
Length -= Offset;
DeviceNameU.Length = DeviceNameU.MaximumLength = 3 * sizeof(WCHAR);
DeviceNameU.Buffer = wc;
/* check for LPTx or COMx */
if (Length == 4 && wc[3] >= L'0' && wc[3] <= L'9')
@ -226,8 +281,8 @@ RtlIsDosDeviceName_U(PWSTR DeviceName)
return 0;
}
if (!_wcsnicmp (wc, L"LPT", 3) ||
!_wcsnicmp (wc, L"COM", 3))
if (RtlEqualUnicodeString(&DeviceNameU, (PUNICODE_STRING)&_lpt, TRUE) ||
RtlEqualUnicodeString(&DeviceNameU, (PUNICODE_STRING)&_com, TRUE))
{
return ((Offset * 2) << 16 ) | 8;
}
@ -236,10 +291,10 @@ RtlIsDosDeviceName_U(PWSTR DeviceName)
/* check for PRN,AUX,NUL or CON */
if (Length == 3 &&
(!_wcsnicmp (wc, L"PRN", 3) ||
!_wcsnicmp (wc, L"AUX", 3) ||
!_wcsnicmp (wc, L"NUL", 3) ||
!_wcsnicmp (wc, L"CON", 3)))
(RtlEqualUnicodeString(&DeviceNameU, (PUNICODE_STRING)&_prn, TRUE) ||
RtlEqualUnicodeString(&DeviceNameU, (PUNICODE_STRING)&_aux, TRUE) ||
RtlEqualUnicodeString(&DeviceNameU, (PUNICODE_STRING)&_nul, TRUE) ||
RtlEqualUnicodeString(&DeviceNameU, (PUNICODE_STRING)&_con, TRUE)))
{
return ((Offset * 2) << 16) | 6;
}
@ -471,13 +526,13 @@ RtlGetFullPathName_U(PWSTR DosName,
PWSTR *FilePart)
{
WCHAR *wcs, var[4], drive;
int len;
int reallen;
ULONG len;
ULONG templen = 0;
DWORD offs, sz, type;
UNICODE_STRING usvar, pfx;
PCURDIR cd;
NTSTATUS Status;
WCHAR TempFullPathName[MAX_PATH+2] = L"";
WCHAR TempFullPathName[MAX_PATH] = L"";
DPRINT("RtlGetFullPathName_U %S %ld %p %p\n",
DosName, size, buf, FilePart);
@ -493,14 +548,13 @@ RtlGetFullPathName_U(PWSTR DosName,
if (!len)
return 0;
reallen=len;
/* strip trailing path separator (but don't change '\') */
if ((len > 1) &&
IS_PATH_SEPARATOR(DosName[len - 1]))
len--;
if (FilePart)
*FilePart = L'\0';
memset (buf, 0, size);
*FilePart = NULL;
*buf = 0;
CHECKPOINT;
/* check for DOS device name */
@ -510,7 +564,7 @@ CHECKPOINT;
offs = sz >> 17;
sz &= 0x0000FFFF;
if (sz + 8 >= size)
return sz + 10;
return sz + 10;
wcscpy (buf, L"\\\\.\\");
wcsncat (buf, DosName + offs, sz / sizeof(WCHAR));
return sz + 8;
@ -530,24 +584,29 @@ DPRINT("type %ld\n", type);
break;
case 2: /* x:\xxx */
*DosName = towupper (*DosName);
*DosName = RtlUpcaseUnicodeChar (*DosName);
break;
case 3: /* x:xxx */
drive = towupper (*DosName);
drive = RtlUpcaseUnicodeChar (*DosName);
DosName += 2;
len -= 2;
CHECKPOINT;
if (drive == towupper (cd->DosPath.Buffer[0]))
if (drive == RtlUpcaseUnicodeChar (cd->DosPath.Buffer[0]))
{
CHECKPOINT;
wcscpy (TempFullPathName, cd->DosPath.Buffer);
memcpy (TempFullPathName, cd->DosPath.Buffer, cd->DosPath.Length);
templen = cd->DosPath.Length / sizeof(WCHAR);
}
else
{
CHECKPOINT;
usvar.Length = 2 * swprintf (var, L"=%c:", drive);
usvar.MaximumLength = 8;
var[0] = L'=';
var[1] = drive;
var[2] = L':';
var[3] = 0;
usvar.Length = 3 * sizeof(WCHAR);
usvar.MaximumLength = 4 * sizeof(WCHAR);
usvar.Buffer = var;
pfx.Length = 0;
pfx.MaximumLength = MAX_PATH;
@ -561,41 +620,60 @@ CHECKPOINT;
CHECKPOINT;
if (Status == STATUS_BUFFER_TOO_SMALL)
return pfx.Length + len * 2 + 2;
swprintf (TempFullPathName, L"%c:\\", drive);
memcpy (TempFullPathName, var, 6);
templen = 3;
}
else
{
templen = pfx.Length / sizeof(WCHAR);
}
}
break;
case 4: /* \xxx */
wcsncpy (TempFullPathName, cd->DosPath.Buffer, 2);
TempFullPathName[2] = 0;
templen = wcslen(TempFullPathName);
break;
case 5: /* xxx */
wcscpy (TempFullPathName, cd->DosPath.Buffer);
memcpy (TempFullPathName, cd->DosPath.Buffer, cd->DosPath.Length);
templen = cd->DosPath.Length / sizeof(WCHAR);
break;
case 7: /* \\. */
wcscpy (TempFullPathName, L"\\\\.\\");
len = 0;
memcpy (TempFullPathName, L"\\\\.\\", 8);
templen = 4;
break;
default:
return 0;
}
RtlReleasePebLock();
DPRINT("TempFullPathName \'%S\' DosName \'%S\' len %ld\n", TempFullPathName, DosName, len);
/* add dosname to prefix */
wcsncat (TempFullPathName, DosName, len);
memcpy (TempFullPathName + templen, DosName, len * sizeof(WCHAR));
len += templen;
TempFullPathName[len] = 0;
CHECKPOINT;
/* replace slashes */
for (wcs = TempFullPathName; *wcs; wcs++)
if (*wcs == L'/')
*wcs = L'\\';
wcs = wcschr(TempFullPathName, L'/');
while(wcs)
{
*wcs = L'\\';
wcs = wcschr(wcs + 1, L'/');
}
if (len == 2 && TempFullPathName[1] == L':')
{
TempFullPathName[len++] = L'\\';
TempFullPathName[len] = 0;
}
len = wcslen (TempFullPathName);
if (len < 3 && buf[len-1] == L':')
wcscat (TempFullPathName, L"\\");
DPRINT("TempFullPathName \'%S\'\n", TempFullPathName);
RtlpEatPath (TempFullPathName);
@ -603,22 +681,21 @@ CHECKPOINT;
len = wcslen (TempFullPathName);
RtlReleasePebLock();
if (len < (size / sizeof(WCHAR)))
{
wcsncpy(buf, TempFullPathName, size / sizeof(WCHAR));
memcpy (buf, TempFullPathName, (len + 1) * sizeof(WCHAR));
/* find file part */
if (FilePart)
{
for (wcs = buf + len - 1; wcs >= buf; wcs--)
*FilePart = wcsrchr(buf, L'\\');
if (*FilePart)
{
if (*wcs == L'\\')
{
*FilePart = wcs + 1;
break;
}
(*FilePart)++;
}
else
{
*FilePart = buf;
}
}
}
@ -638,8 +715,9 @@ RtlDosPathNameToNtPathName_U(PWSTR dosname,
ULONG Type;
ULONG Size;
ULONG Length;
ULONG tmpLength;
ULONG Offset;
WCHAR fullname[2*MAX_PATH];
WCHAR fullname[MAX_PATH + 1];
PWSTR Buffer = NULL;
RtlAcquirePebLock ();
@ -687,13 +765,15 @@ RtlDosPathNameToNtPathName_U(PWSTR dosname,
/* Set NT prefix */
Offset = 0;
wcscpy (Buffer, L"\\??\\");
memcpy (Buffer, L"\\??\\", 4 * sizeof(WCHAR));
tmpLength = 4;
Type = RtlDetermineDosPathNameType_U (fullname);
switch (Type)
{
case 1:
wcscat (Buffer, L"UNC\\");
memcpy (Buffer + tmpLength, L"UNC\\", 4 * sizeof(WCHAR));
tmpLength += 4;
Offset = 2;
break; /* \\xxx */
@ -701,8 +781,9 @@ RtlDosPathNameToNtPathName_U(PWSTR dosname,
Offset = 4;
break; /* \\.\xxx */
}
wcscat (Buffer, fullname + Offset);
Length = wcslen (Buffer);
Length = wcslen(fullname + Offset);
memcpy (Buffer + tmpLength, fullname + Offset, (Length + 1) * sizeof(WCHAR));
Length += tmpLength;
/* set NT filename */
ntname->Length = Length * sizeof(WCHAR);
@ -718,14 +799,17 @@ RtlDosPathNameToNtPathName_U(PWSTR dosname,
{
memset (nah, 0, sizeof(CURDIR));
cd = (PCURDIR)&(NtCurrentPeb ()->ProcessParameters->CurrentDirectoryName);
if (Type == 5 && cd->Handle &&
!_wcsnicmp (cd->DosPath.Buffer, fullname, cd->DosPath.Length / 2))
if (Type == 5 && cd->Handle)
{
RtlInitUnicodeString(&us, fullname);
if (RtlEqualUnicodeString(&us, &cd->DosPath, TRUE))
{
Length = ((cd->DosPath.Length / sizeof(WCHAR)) - Offset) + ((Type == 1) ? 8 : 4);
nah->DosPath.Buffer = Buffer + Length;
nah->DosPath.Length = ntname->Length - (Length * sizeof(WCHAR));
nah->DosPath.MaximumLength = nah->DosPath.Length;
nah->Handle = cd->Handle;
}
}
}