internal static unsafe IntPtr ConvertToNative(int flags, string strManaged, IntPtr pNativeBuffer)
{
if (strManaged == null)
{
return(IntPtr.Zero);
}
System.StubHelpers.StubHelpers.CheckStringLength(strManaged.Length);
byte *numPtr = (byte *)(void *)pNativeBuffer;
int cbLength;
if ((IntPtr)numPtr != IntPtr.Zero || Marshal.SystemMaxDBCSCharSize == 1)
{
int num = (strManaged.Length + 1) * Marshal.SystemMaxDBCSCharSize;
if ((IntPtr)numPtr == IntPtr.Zero)
{
numPtr = (byte *)(void *)Marshal.AllocCoTaskMem(num + 1);
}
cbLength = strManaged.ConvertToAnsi(numPtr, num + 1, (uint)(flags & (int)byte.MaxValue) > 0U, (uint)(flags >> 8) > 0U);
}
else
{
byte[] src = AnsiCharMarshaler.DoAnsiConversion(strManaged, (uint)(flags & (int)byte.MaxValue) > 0U, (uint)(flags >> 8) > 0U, out cbLength);
numPtr = (byte *)(void *)Marshal.AllocCoTaskMem(cbLength + 2);
Buffer.Memcpy(numPtr, 0, src, 0, cbLength);
}
numPtr[cbLength] = (byte)0;
numPtr[cbLength + 1] = (byte)0;
return((IntPtr)((void *)numPtr));
}
internal static unsafe IntPtr ConvertToNative(string strManaged, bool fBestFit, bool fThrowOnUnmappableChar, ref int cch)
{
if (strManaged == null)
{
return(IntPtr.Zero);
}
cch = strManaged.Length;
System.StubHelpers.StubHelpers.CheckStringLength(cch);
int cb = 4 + ((cch + 1) * Marshal.SystemMaxDBCSCharSize);
byte *pDest = (byte *)Marshal.AllocCoTaskMem(cb);
int * numPtr2 = (int *)pDest;
pDest += 4;
if (cch == 0)
{
pDest[0] = 0;
numPtr2[0] = 0;
}
else
{
int num2;
Buffer.memcpy(AnsiCharMarshaler.DoAnsiConversion(strManaged, fBestFit, fThrowOnUnmappableChar, out num2), 0, pDest, 0, num2);
pDest[num2] = 0;
numPtr2[0] = num2;
}
return(new IntPtr((void *)pDest));
}
internal static unsafe IntPtr ConvertToNative(int flags, string strManaged)
{
if (null == strManaged)
{
return(IntPtr.Zero);
}
byte[]? bytes = null;
int nb = 0;
if (strManaged.Length > 0)
{
bytes = AnsiCharMarshaler.DoAnsiConversion(strManaged, 0 != (flags & 0xFF), 0 != (flags >> 8), out nb);
}
uint length = (uint)nb;
IntPtr bstr = Marshal.AllocBSTRByteLen(length);
if (bytes != null)
{
Buffer.Memmove(ref *(byte *)bstr, ref MemoryMarshal.GetArrayDataReference(bytes), length);
}
return(bstr);
}
private unsafe IntPtr ConvertStringBuilderToNative(StringBuilder pManagedHome, int dwFlags)
{
IntPtr intPtr;
if (AsAnyMarshaler.IsAnsi(dwFlags))
{
StubHelpers.CheckStringLength(pManagedHome.Capacity);
int num = pManagedHome.Capacity * Marshal.SystemMaxDBCSCharSize + 4;
intPtr = Marshal.AllocCoTaskMem(num);
byte *ptr = (byte *)((void *)intPtr);
*(ptr + num - 3) = 0;
*(ptr + num - 2) = 0;
*(ptr + num - 1) = 0;
if (AsAnyMarshaler.IsIn(dwFlags))
{
int num2;
byte[] src = AnsiCharMarshaler.DoAnsiConversion(pManagedHome.ToString(), AsAnyMarshaler.IsBestFit(dwFlags), AsAnyMarshaler.IsThrowOn(dwFlags), out num2);
Buffer.Memcpy(ptr, 0, src, 0, num2);
ptr[num2] = 0;
}
if (AsAnyMarshaler.IsOut(dwFlags))
{
this.backPropAction = AsAnyMarshaler.BackPropAction.StringBuilderAnsi;
}
}
else
{
int num3 = pManagedHome.Capacity * 2 + 4;
intPtr = Marshal.AllocCoTaskMem(num3);
byte *ptr2 = (byte *)((void *)intPtr);
*(ptr2 + num3 - 1) = 0;
*(ptr2 + num3 - 2) = 0;
if (AsAnyMarshaler.IsIn(dwFlags))
{
int num4 = pManagedHome.Length * 2;
pManagedHome.InternalCopy(intPtr, num4);
ptr2[num4] = 0;
(ptr2 + num4)[1] = 0;
}
if (AsAnyMarshaler.IsOut(dwFlags))
{
this.backPropAction = AsAnyMarshaler.BackPropAction.StringBuilderUnicode;
}
}
return(intPtr);
}
private unsafe IntPtr ConvertStringBuilderToNative(StringBuilder pManagedHome, int dwFlags)
{
IntPtr dest;
if (AsAnyMarshaler.IsAnsi(dwFlags))
{
System.StubHelpers.StubHelpers.CheckStringLength(pManagedHome.Capacity);
int cb = pManagedHome.Capacity * Marshal.SystemMaxDBCSCharSize + 4;
dest = Marshal.AllocCoTaskMem(cb);
byte *pDest = (byte *)(void *)dest;
*(pDest + cb - 3) = (byte)0;
*(pDest + cb - 2) = (byte)0;
*(pDest + cb - 1) = (byte)0;
if (AsAnyMarshaler.IsIn(dwFlags))
{
int cbLength;
byte[] src = AnsiCharMarshaler.DoAnsiConversion(pManagedHome.ToString(), AsAnyMarshaler.IsBestFit(dwFlags), AsAnyMarshaler.IsThrowOn(dwFlags), out cbLength);
Buffer.Memcpy(pDest, 0, src, 0, cbLength);
pDest[cbLength] = (byte)0;
}
if (AsAnyMarshaler.IsOut(dwFlags))
{
this.backPropAction = AsAnyMarshaler.BackPropAction.StringBuilderAnsi;
}
}
else
{
int cb = pManagedHome.Capacity * 2 + 4;
dest = Marshal.AllocCoTaskMem(cb);
byte *numPtr = (byte *)(void *)dest;
*(numPtr + cb - 1) = (byte)0;
*(numPtr + cb - 2) = (byte)0;
if (AsAnyMarshaler.IsIn(dwFlags))
{
int len = pManagedHome.Length * 2;
pManagedHome.InternalCopy(dest, len);
(numPtr + len)[0] = (byte)0;
(numPtr + len)[1] = (byte)0;
}
if (AsAnyMarshaler.IsOut(dwFlags))
{
this.backPropAction = AsAnyMarshaler.BackPropAction.StringBuilderUnicode;
}
}
return(dest);
}
private unsafe IntPtr ConvertStringBuilderToNative(StringBuilder pManagedHome, int dwFlags)
{
IntPtr ptr;
if (IsAnsi(dwFlags))
{
System.StubHelpers.StubHelpers.CheckStringLength(pManagedHome.Capacity);
int num = (pManagedHome.Capacity * Marshal.SystemMaxDBCSCharSize) + 4;
ptr = Marshal.AllocCoTaskMem(num);
byte *pDest = (byte *)ptr;
*((pDest + num) - 3) = 0;
*((pDest + num) - 2) = 0;
*((pDest + num) - 1) = 0;
if (IsIn(dwFlags))
{
int num2;
Buffer.memcpy(AnsiCharMarshaler.DoAnsiConversion(pManagedHome.ToString(), IsBestFit(dwFlags), IsThrowOn(dwFlags), out num2), 0, pDest, 0, num2);
pDest[num2] = 0;
}
if (IsOut(dwFlags))
{
this.backPropAction = BackPropAction.StringBuilderAnsi;
}
return(ptr);
}
int cb = (pManagedHome.Capacity * 2) + 4;
ptr = Marshal.AllocCoTaskMem(cb);
byte *numPtr2 = (byte *)ptr;
*((numPtr2 + cb) - 1) = 0;
*((numPtr2 + cb) - 2) = 0;
if (IsIn(dwFlags))
{
int len = pManagedHome.Length * 2;
pManagedHome.InternalCopy(ptr, len);
numPtr2[len] = 0;
(numPtr2 + len)[1] = 0;
}
if (IsOut(dwFlags))
{
this.backPropAction = BackPropAction.StringBuilderUnicode;
}
return(ptr);
}
internal static IntPtr ConvertToNative(int flags, string strManaged)
{
if (strManaged == null)
{
return(IntPtr.Zero);
}
int length = strManaged.Length;
StubHelpers.CheckStringLength(length);
byte[] str = null;
int len = 0;
if (length > 0)
{
str = AnsiCharMarshaler.DoAnsiConversion(strManaged, (flags & 255) != 0, flags >> 8 != 0, out len);
}
return(Win32Native.SysAllocStringByteLen(str, (uint)len));
}
internal static IntPtr ConvertToNative(int flags, string strManaged)
{
if (strManaged == null)
{
return(IntPtr.Zero);
}
int length = strManaged.Length;
System.StubHelpers.StubHelpers.CheckStringLength(length);
byte[] str = null;
int cbLength = 0;
if (length > 0)
{
str = AnsiCharMarshaler.DoAnsiConversion(strManaged, 0 != (flags & 0xff), 0 != (flags >> 8), out cbLength);
}
return(Win32Native.SysAllocStringByteLen(str, (uint)cbLength));
}
internal static unsafe IntPtr ConvertToNative(int flags, string strManaged, IntPtr pNativeBuffer)
{
int num;
if (strManaged == null)
{
return(IntPtr.Zero);
}
System.StubHelpers.StubHelpers.CheckStringLength(strManaged.Length);
byte[] src = AnsiCharMarshaler.DoAnsiConversion(strManaged, 0 != (flags & 0xff), 0 != (flags >> 8), out num);
byte * pDest = (byte *)pNativeBuffer;
if (pDest == null)
{
pDest = (byte *)Marshal.AllocCoTaskMem(num + 2);
}
Buffer.memcpy(src, 0, pDest, 0, num);
pDest[num] = 0;
pDest[num + 1] = 0;
return((IntPtr)pDest);
}
internal static unsafe IntPtr ConvertToNative(string strManaged, bool fBestFit, bool fThrowOnUnmappableChar, ref int cch)
{
if (null == strManaged)
{
return(IntPtr.Zero);
}
byte *pNative;
cch = strManaged.Length;
// length field at negative offset + (# of characters incl. the terminator) * max ANSI char size
int nbytes = checked (sizeof(uint) + ((cch + 1) * Marshal.SystemMaxDBCSCharSize));
pNative = (byte *)Marshal.AllocCoTaskMem(nbytes);
int *pLength = (int *)pNative;
pNative += sizeof(uint);
if (0 == cch)
{
*pNative = 0;
*pLength = 0;
}
else
{
byte[] bytes = AnsiCharMarshaler.DoAnsiConversion(strManaged, fBestFit, fThrowOnUnmappableChar, out int nbytesused);
Debug.Assert(nbytesused >= 0 && nbytesused < nbytes, "Insufficient buffer allocated in VBByValStrMarshaler.ConvertToNative");
Buffer.Memmove(ref *pNative, ref MemoryMarshal.GetArrayDataReference(bytes), (nuint)nbytesused);
pNative[nbytesused] = 0;
*pLength = nbytesused;
}
return(new IntPtr(pNative));
}
internal static unsafe IntPtr ConvertToNative(int flags, string strManaged, IntPtr pNativeBuffer)
{
if (null == strManaged)
{
return(IntPtr.Zero);
}
int nb;
byte *pbNativeBuffer = (byte *)pNativeBuffer;
if (pbNativeBuffer != null || Marshal.SystemMaxDBCSCharSize == 1)
{
// If we are marshaling into a stack buffer or we can accurately estimate the size of the required heap
// space, we will use a "1-pass" mode where we convert the string directly into the unmanaged buffer.
// + 1 for the null character from the user. + 1 for the null character we put in.
nb = checked ((strManaged.Length + 1) * Marshal.SystemMaxDBCSCharSize + 1);
bool didAlloc = false;
// Use the pre-allocated buffer (allocated by localloc IL instruction) if not NULL,
// otherwise fallback to AllocCoTaskMem
if (pbNativeBuffer == null)
{
pbNativeBuffer = (byte *)Marshal.AllocCoTaskMem(nb);
didAlloc = true;
}
try
{
nb = Marshal.StringToAnsiString(strManaged, pbNativeBuffer, nb,
bestFit: 0 != (flags & 0xFF), throwOnUnmappableChar: 0 != (flags >> 8));
}
catch (Exception) when(didAlloc)
{
Marshal.FreeCoTaskMem((IntPtr)pbNativeBuffer);
throw;
}
}
else
{
if (strManaged.Length == 0)
{
nb = 0;
pbNativeBuffer = (byte *)Marshal.AllocCoTaskMem(2);
}
else
{
// Otherwise we use a slower "2-pass" mode where we first marshal the string into an intermediate buffer
// (managed byte array) and then allocate exactly the right amount of unmanaged memory. This is to avoid
// wasting memory on systems with multibyte character sets where the buffer we end up with is often much
// smaller than the upper bound for the given managed string.
byte[] bytes = AnsiCharMarshaler.DoAnsiConversion(strManaged,
fBestFit: 0 != (flags & 0xFF), fThrowOnUnmappableChar: 0 != (flags >> 8), out nb);
// + 1 for the null character from the user. + 1 for the null character we put in.
pbNativeBuffer = (byte *)Marshal.AllocCoTaskMem(nb + 2);
Buffer.Memmove(ref *pbNativeBuffer, ref MemoryMarshal.GetArrayDataReference(bytes), (nuint)nb);
}
}
pbNativeBuffer[nb] = 0x00;
pbNativeBuffer[nb + 1] = 0x00;
return((IntPtr)pbNativeBuffer);
}
