public static IntPtr ToIntPtr(byte[] value, ref int length)
{
if (value == null)
{
return(IntPtr.Zero);
}
length = (int)value.Length;
if (length == 0)
{
return(IntPtr.Zero);
}
IntPtr intPtr = SQLiteMemory.Allocate(length);
if (intPtr == IntPtr.Zero)
{
return(IntPtr.Zero);
}
Marshal.Copy(value, 0, intPtr, length);
return(intPtr);
}
public static IntPtr Utf8IntPtrFromString(string value, ref int length)
{
if (value == null)
{
return(IntPtr.Zero);
}
IntPtr zero = IntPtr.Zero;
byte[] utf8BytesFromString = SQLiteString.GetUtf8BytesFromString(value);
if (utf8BytesFromString == null)
{
return(IntPtr.Zero);
}
length = (int)utf8BytesFromString.Length;
zero = SQLiteMemory.Allocate(length + 1);
if (zero == IntPtr.Zero)
{
return(IntPtr.Zero);
}
Marshal.Copy(utf8BytesFromString, 0, zero, length);
Marshal.WriteByte(zero, length, 0);
return(zero);
}
private static IntPtr AllocateAndInitializeNative(int nConstraint, int nOrderBy)
{
int num;
int num1;
int num2;
int num3;
IntPtr zero = IntPtr.Zero;
IntPtr intPtr = IntPtr.Zero;
IntPtr zero1 = IntPtr.Zero;
IntPtr intPtr1 = IntPtr.Zero;
IntPtr zero2 = IntPtr.Zero;
try
{
SQLiteIndex.SizeOfNative(out num, out num2, out num1, out num3);
if (num > 0 && num2 > 0 && num1 > 0 && num3 > 0)
{
intPtr = SQLiteMemory.Allocate(num);
zero1 = SQLiteMemory.Allocate(num2 * nConstraint);
intPtr1 = SQLiteMemory.Allocate(num1 * nOrderBy);
zero2 = SQLiteMemory.Allocate(num3 * nConstraint);
if (intPtr != IntPtr.Zero && zero1 != IntPtr.Zero && intPtr1 != IntPtr.Zero && zero2 != IntPtr.Zero)
{
int num4 = 0;
SQLiteMarshal.WriteInt32(intPtr, num4, nConstraint);
num4 = SQLiteMarshal.NextOffsetOf(num4, 4, IntPtr.Size);
SQLiteMarshal.WriteIntPtr(intPtr, num4, zero1);
num4 = SQLiteMarshal.NextOffsetOf(num4, IntPtr.Size, 4);
SQLiteMarshal.WriteInt32(intPtr, num4, nOrderBy);
num4 = SQLiteMarshal.NextOffsetOf(num4, 4, IntPtr.Size);
SQLiteMarshal.WriteIntPtr(intPtr, num4, intPtr1);
num4 = SQLiteMarshal.NextOffsetOf(num4, IntPtr.Size, IntPtr.Size);
SQLiteMarshal.WriteIntPtr(intPtr, num4, zero2);
zero = intPtr;
}
}
}
finally
{
if (zero == IntPtr.Zero)
{
if (zero2 != IntPtr.Zero)
{
SQLiteMemory.Free(zero2);
zero2 = IntPtr.Zero;
}
if (intPtr1 != IntPtr.Zero)
{
SQLiteMemory.Free(intPtr1);
intPtr1 = IntPtr.Zero;
}
if (zero1 != IntPtr.Zero)
{
SQLiteMemory.Free(zero1);
zero1 = IntPtr.Zero;
}
if (intPtr != IntPtr.Zero)
{
SQLiteMemory.Free(intPtr);
intPtr = IntPtr.Zero;
}
}
}
return(zero);
}