/* static DispoIntPtr() {
// Platform.SetupPlatformImplementation(typeof(DispoIntPtr));
} */
public static DispoIntPtr Alloc(int size)
{
var dispPtr = new DispoIntPtr();
dispPtr._ptr = Marshal.AllocHGlobal(size);
dispPtr.isAllocated = true;
return dispPtr;
}
/* static DispoIntPtr() {
* // Platform.SetupPlatformImplementation(typeof(DispoIntPtr));
* } */
public static DispoIntPtr Alloc(int size)
{
var dispPtr = new DispoIntPtr();
dispPtr._ptr = Marshal.AllocHGlobal(size);
dispPtr.isAllocated = true;
return(dispPtr);
}
private static DispoIntPtr AllocStringNative(string str, out int byteCount)
{
// use builtin allocation
var dispPtr = new DispoIntPtr();
dispPtr._ptr = Marshal.StringToHGlobalAnsi(str);
dispPtr.isAllocated = true;
byteCount = Encoding.Default.GetByteCount(str);
return(dispPtr);
}
unsafe internal static DispoIntPtr AllocStringNative(string str, out int byteCount)
{
// use builtin allocation
var dispPtr = new DispoIntPtr();
dispPtr._ptr = Marshal.StringToHGlobalAnsi(str);
dispPtr.isAllocated = true;
byteCount = Encoding.Default.GetByteCount(str);
return(dispPtr); /**/
/* use encoding or Encoding.Default ( system codepage of ANSI )
* var enc = Encoding.Default.GetEncoder();
*
* // var encoded = new byte[length];
* // Marshal.Copy(encoded, 0, dispPtr._ptr, length);
*
* IntPtr ptr;
* int charCount = str.Length;
*
* fixed (char* strP = str)
* {
* byteCount = enc.GetByteCount(strP, charCount, false);
*
* ptr = Marshal.AllocHGlobal(byteCount + 1);
*
* enc.GetBytes(strP, charCount, (byte*)ptr, byteCount, true);
*
*((byte*)ptr + byteCount) = 0x00;
* }
*
* var dispPtr = new DispoIntPtr ();
* dispPtr._ptr = ptr;
* dispPtr.isAllocated = true;
*
* // and a C char 0x00 terminator
* // Marshal.WriteByte(dispPtr._ptr + length, byte.MinValue);
* // *((byte*)dispPtr._ptr + length) = 0x00;
*
* return dispPtr; /**/
}
unsafe internal static DispoIntPtr AllocStringNative(string str, out int byteCount)
{
// use builtin allocation
var dispPtr = new DispoIntPtr();
dispPtr._ptr = Marshal.StringToHGlobalAnsi(str);
dispPtr.isAllocated = true;
byteCount = Encoding.Default.GetByteCount(str);
return dispPtr; /**/
/* use encoding or Encoding.Default ( system codepage of ANSI )
var enc = Encoding.Default.GetEncoder();
// var encoded = new byte[length];
// Marshal.Copy(encoded, 0, dispPtr._ptr, length);
IntPtr ptr;
int charCount = str.Length;
fixed (char* strP = str)
{
byteCount = enc.GetByteCount(strP, charCount, false);
ptr = Marshal.AllocHGlobal(byteCount + 1);
enc.GetBytes(strP, charCount, (byte*)ptr, byteCount, true);
*((byte*)ptr + byteCount) = 0x00;
}
var dispPtr = new DispoIntPtr ();
dispPtr._ptr = ptr;
dispPtr.isAllocated = true;
// and a C char 0x00 terminator
// Marshal.WriteByte(dispPtr._ptr + length, byte.MinValue);
// *((byte*)dispPtr._ptr + length) = 0x00;
return dispPtr; /**/
}
unsafe internal void WriteStringNative(string str, Encoding encoding, bool create)
{
if (str == null)
{
throw new ArgumentNullException("str");
}
if (str == string.Empty)
{
if (create)
{
this._framePtr = CreateNative(0);
this._capacity = 0;
this._position = 0;
}
return;
}
int charCount = str.Length;
Encoder enc = encoding.GetEncoder();
fixed (char* strP = str)
{
int byteCount = enc.GetByteCount(strP, charCount, false);
if (create)
{
this._framePtr = CreateNative(byteCount);
this._capacity = byteCount;
this._position = 0;
}
else if (this._position + byteCount > this.Length)
{
// fail if frame is too small
throw new InvalidOperationException();
}
byteCount = enc.GetBytes(strP, charCount, (byte*)(this.DataPtr() + this._position), byteCount, true);
this._position += byteCount;
}
}
public void Dismiss()
{
if (_framePtr != null)
{
_framePtr.Dispose();
_framePtr = null;
}
}
/* protected ZFrame(IntPtr data, int size)
: this(Alloc(data, size), size)
{ } */
protected ZFrame(DispoIntPtr framePtr, int size)
: base()
{
_framePtr = framePtr;
_capacity = size;
_position = 0;
}
internal void WriteStringNative(string str, Encoding encoding, bool create)
{
if (str == null)
{
throw new ArgumentNullException("str");
}
if (str == string.Empty)
{
if (create)
{
this._framePtr = CreateNative(0);
this._capacity = 0;
this._position = 0;
}
return;
}
byte[] bytes = encoding.GetBytes(str);
if (create)
{
this._framePtr = CreateNative(bytes.Length);
this._capacity = bytes.Length;
this._position = 0;
}
Write(bytes, 0, bytes.Length);
}