45 lines
1.2 KiB
C#
45 lines
1.2 KiB
C#
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using System;
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using System.Text;
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using System.Runtime.InteropServices;
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namespace SDL2 {
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internal unsafe class LPUtf8StrMarshaler : ICustomMarshaler {
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static LPUtf8StrMarshaler _instance = new LPUtf8StrMarshaler();
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static ICustomMarshaler GetInstance (string cookie) {
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return _instance;
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}
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public object MarshalNativeToManaged (IntPtr pNativeData) {
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var ptr = (byte*)pNativeData;
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while (*ptr != 0)
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ptr++;
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var bytes = new byte[ptr - (byte*)pNativeData];
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Marshal.Copy(pNativeData, bytes, 0, bytes.Length);
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return Encoding.UTF8.GetString(bytes);
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}
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public IntPtr MarshalManagedToNative (object ManagedObj) {
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var str = ManagedObj as string;
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if (str == null)
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throw new ArgumentException("ManagedObj must be a string.", "ManagedObj");
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var bytes = Encoding.UTF8.GetBytes(str);
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var mem = Marshal.AllocHGlobal(bytes.Length + 1);
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Marshal.Copy(bytes, 0, mem, bytes.Length);
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((byte*)mem)[bytes.Length] = 0;
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return mem;
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}
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public void CleanUpNativeData (IntPtr pNativeData) {
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Marshal.FreeHGlobal(pNativeData);
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}
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public void CleanUpManagedData (object ManagedObj) {
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}
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public int GetNativeDataSize () {
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return -1;
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}
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}
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}
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