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feat: finish basic function of BMapSharp.

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- fix weird C sharp behavior about calling FreeNativeData without calling ManagedToNative, which cause segment fault.
- disable unhandled exception handler in debug mode for BMap.
- change all associated code involving these issues.
This commit is contained in:
yyc12345 2024-10-05 11:58:25 +08:00
parent 3566efa36a
commit b319e0fcb6
7 changed files with 135 additions and 43 deletions
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4
BMap/BMExports.cpp
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@ -55,7 +55,7 @@ bool BMInit() {
if (CheckInited()) return false;
// register exception handler if we are in Windows.
#if YYCC_OS == YYCC_OS_WINDOWS
#if defined(LIBCMO_BUILD_RELEASE) && (YYCC_OS == YYCC_OS_WINDOWS)
YYCC::ExceptionHelper::Register();
#endif
@ -89,7 +89,7 @@ bool BMDispose() {
LibCmo::CK2::CKShutdown();
// unregister exception handler if we are in Windows
#if YYCC_OS == YYCC_OS_WINDOWS
#if defined(LIBCMO_BUILD_RELEASE) && (YYCC_OS == YYCC_OS_WINDOWS)
YYCC::ExceptionHelper::Unregister();
#endif

94
BMapBindings/BMapSharp/BMapSharp/BMap.cs
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@ -19,10 +19,6 @@ namespace BMapSharp {
public static class BMap {
/// <summary>The callback function of BMap.</summary>
/// <param name="msg">The message content need to be printed.</param>
public delegate void OutputCallback([In, MarshalAs(UnmanagedType.LPUTF8Str)] string msg);
#region Custom Marshalers
// References:
@ -33,24 +29,38 @@ namespace BMapSharp {
// Because my binding do not have In, Out parameter. All parameters are In OR Out.
// So there is no reason to keep that member.
// IDK why Microsoft try to call ICustomMarshaler.CleanUpNativeData without calling ICustomMarshaler.MarshalManagedToNative.
// It is trying to free the pointer managed by LibCmo self (for example, it will try to free we got string when getting object name)!
// So as the compromise, we use "cookie" feature to explicit specify the marshaler In/Out behavior when getting it.
[Flags]
internal enum MarshalerType {
None = 0b0,
In = 0b1,
Out = 0b10
}
/// <summary>The custom marshaler for BMap string array.</summary>
public class BMStringArrayMarshaler : ICustomMarshaler {
private static readonly BMStringArrayMarshaler g_Instance = new BMStringArrayMarshaler();
public static ICustomMarshaler GetInstance(string pstrCookie) => g_Instance;
private static readonly BMStringArrayMarshaler g_InInstance = new BMStringArrayMarshaler(MarshalerType.In);
private static readonly BMStringArrayMarshaler g_OutInstance = new BMStringArrayMarshaler(MarshalerType.Out);
public static ICustomMarshaler GetInstance(string pstrCookie) {
if (pstrCookie == "In") return g_InInstance;
else if (pstrCookie == "Out") return g_OutInstance;
else throw new MarshalDirectiveException("Not supported cookie string for BMStringArrayMarshaler.");
}
private readonly MarshalerType m_MarshalerType;
private BMStringArrayMarshaler(MarshalerType marshaler_type) {
m_MarshalerType = marshaler_type;
}
// For respecting the standard of BMap,
// the native memory we created is a simple array and each item is a pointer to a NULL-terminated UTF8 string.
// Please note the array self is not NULL-terminated because its length is provided by another argument in function calling.
// However, this memory layout is not good for our marshaling.
// We can not know the size of array we created. Because we need iterate it when freeing or fetching data.
// We also can not know the size of string we created because we need read them when parsing them to C# string.
//
// So the solution we made is adding an uint32_t header before the array to indicate the size of array.
// And also add an uint32_t header for each string to indicate the length of string (in bytes, NULL exclusive).
// So the pointer put in array is not the address we allocated, it has an offset.
// Also we return native pointer is not the address we allocated, it also has an offset.
// Please note the array self is also NULL-terminated otherwise we don't know its length.
public nint MarshalManagedToNative(object ManagedObj) {
// Check marshaler type
if (!m_MarshalerType.HasFlag(MarshalerType.In)) return nint.Zero;
// Check nullptr object.
if (ManagedObj is null) return nint.Zero;
// Check argument type.
@ -72,7 +82,7 @@ namespace BMapSharp {
// Allocate array pointer now.
nint pArray = Marshal.AllocHGlobal(szArrayItemSize * (szArrayItemCount + 1));
// Copy string pointer data
Marshal.Copy(apString, 0, pArray, szArrayItemSize * szArrayItemCount);
Marshal.Copy(apString, 0, pArray, szArrayItemCount);
// Setup NULL ternimal
Marshal.WriteIntPtr(pArray + (szArrayItemSize * szArrayItemCount), nint.Zero);
@ -81,6 +91,8 @@ namespace BMapSharp {
}
public object MarshalNativeToManaged(nint pNativeData) {
// Check marshaler type
if (!m_MarshalerType.HasFlag(MarshalerType.Out)) return null;
// Check nullptr
if (pNativeData == nint.Zero) return null;
@ -89,7 +101,7 @@ namespace BMapSharp {
int szArrayItemSize = Marshal.SizeOf<nint>();
// Prepare array cache and read it.
nint[] apString = new nint[szArrayItemCount];
Marshal.Copy(pNativeData, apString, 0, szArrayItemSize * szArrayItemCount);
Marshal.Copy(pNativeData, apString, 0, szArrayItemCount);
// Iterate the array and process each string one by one.
string[] ret = new string[szArrayItemCount];
@ -109,6 +121,8 @@ namespace BMapSharp {
}
public void CleanUpNativeData(nint pNativeData) {
// Check marshaler type
if (!m_MarshalerType.HasFlag(MarshalerType.In)) return;
// Check nullptr
if (pNativeData == nint.Zero) return;
@ -117,7 +131,7 @@ namespace BMapSharp {
int szArrayItemSize = Marshal.SizeOf<nint>();
// Prepare array cache and read it.
nint[] apString = new nint[szArrayItemCount];
Marshal.Copy(pNativeData, apString, 0, szArrayItemSize * szArrayItemCount);
Marshal.Copy(pNativeData, apString, 0, szArrayItemCount);
// Free array self
Marshal.FreeHGlobal(pNativeData);
@ -154,10 +168,22 @@ namespace BMapSharp {
}
public class BMStringMarshaler : ICustomMarshaler {
private static readonly BMStringMarshaler g_Instance = new BMStringMarshaler();
public static ICustomMarshaler GetInstance(string pstrCookie) => g_Instance;
private static readonly BMStringMarshaler g_InInstance = new BMStringMarshaler(MarshalerType.In);
private static readonly BMStringMarshaler g_OutInstance = new BMStringMarshaler(MarshalerType.Out);
public static ICustomMarshaler GetInstance(string pstrCookie) {
if (pstrCookie == "In") return g_InInstance;
else if (pstrCookie == "Out") return g_OutInstance;
else throw new MarshalDirectiveException("Not supported cookie string for BMStringMarshaler.");
}
private readonly MarshalerType m_MarshalerType;
private BMStringMarshaler(MarshalerType marshaler_type) {
m_MarshalerType = marshaler_type;
}
public nint MarshalManagedToNative(object ManagedObj) {
// Check marshaler type
if (!m_MarshalerType.HasFlag(MarshalerType.In)) return nint.Zero;
// Check requirements.
if (ManagedObj is null) return nint.Zero;
string castManagedObj = ManagedObj as string;
@ -168,6 +194,8 @@ namespace BMapSharp {
}
public object MarshalNativeToManaged(nint pNativeData) {
// Check marshaler type
if (!m_MarshalerType.HasFlag(MarshalerType.Out)) return null;
// Check nullptr
if (pNativeData == nint.Zero) return null;
// Call self
@ -175,6 +203,8 @@ namespace BMapSharp {
}
public void CleanUpNativeData(nint pNativeData) {
// Check marshaler type
if (!m_MarshalerType.HasFlag(MarshalerType.In)) return;
// Check nullptr
if (pNativeData == nint.Zero) return;
// Free native pointer
@ -218,7 +248,7 @@ namespace BMapSharp {
int szStringItemSize = Marshal.SizeOf<byte>();
nint pString = Marshal.AllocHGlobal(szStringItemSize * (szStringItemCount + 1));
// Copy encoded string data
Marshal.Copy(encString, 0, pString, szStringItemSize * szStringItemCount);
Marshal.Copy(encString, 0, pString, szStringItemCount);
// Setup NUL
Marshal.WriteByte(pString + (szStringItemSize * szStringItemCount), (byte)0);
// Return value
@ -236,7 +266,7 @@ namespace BMapSharp {
int szStringItemSize = Marshal.SizeOf<byte>();
// Prepare cache and copy string data
byte[] encString = new byte[szStringItemCount];
Marshal.Copy(ptr, encString, 0, szStringItemSize * szStringItemCount);
Marshal.Copy(ptr, encString, 0, szStringItemCount);
// Decode string and return
return Encoding.UTF8.GetString(encString);
}
@ -244,6 +274,10 @@ namespace BMapSharp {
#endregion
/// <summary>The callback function of BMap.</summary>
/// <param name="msg">The message content need to be printed.</param>
internal delegate void OutputCallback([In, MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(BMStringMarshaler))] string msg);
// Decide the file name of loaded DLL.
#if BMAP_OS_WINDOWS
@ -281,7 +315,7 @@ namespace BMapSharp {
/// <returns>True if no error, otherwise False.</returns>
[DllImport(g_DllName, EntryPoint = "BMFile_Load", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi, ExactSpelling = true)]
[return: MarshalAs(UnmanagedType.U1)]
internal static extern bool BMFile_Load([In, MarshalAs(UnmanagedType.LPUTF8Str)] string file_name, [In, MarshalAs(UnmanagedType.LPUTF8Str)] string temp_folder, [In, MarshalAs(UnmanagedType.LPUTF8Str)] string texture_folder, [In, MarshalAs(UnmanagedType.FunctionPtr)] OutputCallback raw_callback, [In, MarshalAs(UnmanagedType.U4)] uint encoding_count, [In, MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(BMStringArrayMarshaler))] string[] encodings, [Out, MarshalAs(UnmanagedType.SysInt)] out IntPtr out_file);
internal static extern bool BMFile_Load([In, MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(BMStringMarshaler), MarshalCookie = "In")] string file_name, [In, MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(BMStringMarshaler), MarshalCookie = "In")] string temp_folder, [In, MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(BMStringMarshaler), MarshalCookie = "In")] string texture_folder, [In, MarshalAs(UnmanagedType.FunctionPtr)] OutputCallback raw_callback, [In, MarshalAs(UnmanagedType.U4)] uint encoding_count, [In, MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(BMStringArrayMarshaler), MarshalCookie = "In")] string[] encodings, [Out, MarshalAs(UnmanagedType.SysInt)] out IntPtr out_file);
/// <summary>BMFile_Create</summary>
/// <param name="temp_folder">Type: LibCmo::CKSTRING. </param>
/// <param name="texture_folder">Type: LibCmo::CKSTRING. </param>
@ -292,7 +326,7 @@ namespace BMapSharp {
/// <returns>True if no error, otherwise False.</returns>
[DllImport(g_DllName, EntryPoint = "BMFile_Create", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi, ExactSpelling = true)]
[return: MarshalAs(UnmanagedType.U1)]
internal static extern bool BMFile_Create([In, MarshalAs(UnmanagedType.LPUTF8Str)] string temp_folder, [In, MarshalAs(UnmanagedType.LPUTF8Str)] string texture_folder, [In, MarshalAs(UnmanagedType.FunctionPtr)] OutputCallback raw_callback, [In, MarshalAs(UnmanagedType.U4)] uint encoding_count, [In, MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(BMStringArrayMarshaler))] string[] encodings, [Out, MarshalAs(UnmanagedType.SysInt)] out IntPtr out_file);
internal static extern bool BMFile_Create([In, MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(BMStringMarshaler), MarshalCookie = "In")] string temp_folder, [In, MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(BMStringMarshaler), MarshalCookie = "In")] string texture_folder, [In, MarshalAs(UnmanagedType.FunctionPtr)] OutputCallback raw_callback, [In, MarshalAs(UnmanagedType.U4)] uint encoding_count, [In, MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(BMStringArrayMarshaler), MarshalCookie = "In")] string[] encodings, [Out, MarshalAs(UnmanagedType.SysInt)] out IntPtr out_file);
/// <summary>BMFile_Save</summary>
/// <param name="map_file">Type: BMap::BMFile*. </param>
/// <param name="file_name">Type: LibCmo::CKSTRING. </param>
@ -302,7 +336,7 @@ namespace BMapSharp {
/// <returns>True if no error, otherwise False.</returns>
[DllImport(g_DllName, EntryPoint = "BMFile_Save", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi, ExactSpelling = true)]
[return: MarshalAs(UnmanagedType.U1)]
internal static extern bool BMFile_Save([In, MarshalAs(UnmanagedType.SysInt)] IntPtr map_file, [In, MarshalAs(UnmanagedType.LPUTF8Str)] string file_name, [In, MarshalAs(UnmanagedType.U4)] uint texture_save_opt, [In, MarshalAs(UnmanagedType.U1)] bool use_compress, [In, MarshalAs(UnmanagedType.I4)] int compreess_level);
internal static extern bool BMFile_Save([In, MarshalAs(UnmanagedType.SysInt)] IntPtr map_file, [In, MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(BMStringMarshaler), MarshalCookie = "In")] string file_name, [In, MarshalAs(UnmanagedType.U4)] uint texture_save_opt, [In, MarshalAs(UnmanagedType.U1)] bool use_compress, [In, MarshalAs(UnmanagedType.I4)] int compreess_level);
/// <summary>BMFile_Free</summary>
/// <param name="map_file">Type: BMap::BMFile*. </param>
/// <returns>True if no error, otherwise False.</returns>
@ -537,7 +571,7 @@ namespace BMapSharp {
/// <returns>True if no error, otherwise False.</returns>
[DllImport(g_DllName, EntryPoint = "BMObject_GetName", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi, ExactSpelling = true)]
[return: MarshalAs(UnmanagedType.U1)]
internal static extern bool BMObject_GetName([In, MarshalAs(UnmanagedType.SysInt)] IntPtr bmfile, [In, MarshalAs(UnmanagedType.U4)] uint objid, [Out, MarshalAs(UnmanagedType.LPUTF8Str)] out string out_name);
internal static extern bool BMObject_GetName([In, MarshalAs(UnmanagedType.SysInt)] IntPtr bmfile, [In, MarshalAs(UnmanagedType.U4)] uint objid, [Out, MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(BMStringMarshaler), MarshalCookie = "Out")] out string out_name);
/// <summary>BMObject_SetName</summary>
/// <param name="bmfile">Type: BMap::BMFile*. The pointer to corresponding BMFile.</param>
/// <param name="objid">Type: LibCmo::CK2::CK_ID. The CKID of object you accessing.</param>
@ -545,7 +579,7 @@ namespace BMapSharp {
/// <returns>True if no error, otherwise False.</returns>
[DllImport(g_DllName, EntryPoint = "BMObject_SetName", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi, ExactSpelling = true)]
[return: MarshalAs(UnmanagedType.U1)]
internal static extern bool BMObject_SetName([In, MarshalAs(UnmanagedType.SysInt)] IntPtr bmfile, [In, MarshalAs(UnmanagedType.U4)] uint objid, [In, MarshalAs(UnmanagedType.LPUTF8Str)] string name);
internal static extern bool BMObject_SetName([In, MarshalAs(UnmanagedType.SysInt)] IntPtr bmfile, [In, MarshalAs(UnmanagedType.U4)] uint objid, [In, MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(BMStringMarshaler), MarshalCookie = "In")] string name);
/// <summary>BMGroup_AddObject</summary>
/// <param name="bmfile">Type: BMap::BMFile*. The pointer to corresponding BMFile.</param>
/// <param name="objid">Type: LibCmo::CK2::CK_ID. The CKID of object you accessing.</param>
@ -578,7 +612,7 @@ namespace BMapSharp {
/// <returns>True if no error, otherwise False.</returns>
[DllImport(g_DllName, EntryPoint = "BMTexture_GetFileName", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi, ExactSpelling = true)]
[return: MarshalAs(UnmanagedType.U1)]
internal static extern bool BMTexture_GetFileName([In, MarshalAs(UnmanagedType.SysInt)] IntPtr bmfile, [In, MarshalAs(UnmanagedType.U4)] uint objid, [Out, MarshalAs(UnmanagedType.LPUTF8Str)] out string out_filename);
internal static extern bool BMTexture_GetFileName([In, MarshalAs(UnmanagedType.SysInt)] IntPtr bmfile, [In, MarshalAs(UnmanagedType.U4)] uint objid, [Out, MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(BMStringMarshaler), MarshalCookie = "Out")] out string out_filename);
/// <summary>BMTexture_LoadImage</summary>
/// <param name="bmfile">Type: BMap::BMFile*. The pointer to corresponding BMFile.</param>
/// <param name="objid">Type: LibCmo::CK2::CK_ID. The CKID of object you accessing.</param>
@ -586,7 +620,7 @@ namespace BMapSharp {
/// <returns>True if no error, otherwise False.</returns>
[DllImport(g_DllName, EntryPoint = "BMTexture_LoadImage", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi, ExactSpelling = true)]
[return: MarshalAs(UnmanagedType.U1)]
internal static extern bool BMTexture_LoadImage([In, MarshalAs(UnmanagedType.SysInt)] IntPtr bmfile, [In, MarshalAs(UnmanagedType.U4)] uint objid, [In, MarshalAs(UnmanagedType.LPUTF8Str)] string filename);
internal static extern bool BMTexture_LoadImage([In, MarshalAs(UnmanagedType.SysInt)] IntPtr bmfile, [In, MarshalAs(UnmanagedType.U4)] uint objid, [In, MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(BMStringMarshaler), MarshalCookie = "In")] string filename);
/// <summary>BMTexture_SaveImage</summary>
/// <param name="bmfile">Type: BMap::BMFile*. The pointer to corresponding BMFile.</param>
/// <param name="objid">Type: LibCmo::CK2::CK_ID. The CKID of object you accessing.</param>
@ -594,7 +628,7 @@ namespace BMapSharp {
/// <returns>True if no error, otherwise False.</returns>
[DllImport(g_DllName, EntryPoint = "BMTexture_SaveImage", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi, ExactSpelling = true)]
[return: MarshalAs(UnmanagedType.U1)]
internal static extern bool BMTexture_SaveImage([In, MarshalAs(UnmanagedType.SysInt)] IntPtr bmfile, [In, MarshalAs(UnmanagedType.U4)] uint objid, [In, MarshalAs(UnmanagedType.LPUTF8Str)] string filename);
internal static extern bool BMTexture_SaveImage([In, MarshalAs(UnmanagedType.SysInt)] IntPtr bmfile, [In, MarshalAs(UnmanagedType.U4)] uint objid, [In, MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(BMStringMarshaler), MarshalCookie = "In")] string filename);
/// <summary>BMTexture_GetSaveOptions</summary>
/// <param name="bmfile">Type: BMap::BMFile*. The pointer to corresponding BMFile.</param>
/// <param name="objid">Type: LibCmo::CK2::CK_ID. The CKID of object you accessing.</param>

2
BMapBindings/BMapSharp/BMapSharp/BMapWrapper.cs
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@ -229,7 +229,7 @@ namespace BMapSharp.BMapWrapper {
BMapException.ThrowIfFailed(BMap.BMFile_GetMeshCount(this.getPointer(), out uint out_count));
return out_count;
}
public IEnumerable<BMMesh> GetMeshs() {
public IEnumerable<BMMesh> GetMeshes() {
uint count = GetMeshCount();
for (uint i = 0; i < count; ++i) {
BMapException.ThrowIfFailed(BMap.BMFile_GetMesh(this.getPointer(), i, out uint out_id));

4
BMapBindings/BMapSharp/BMapSharpTestbench/BMapSharpTestbench.csproj
View File

@ -1,5 +1,9 @@
<Project Sdk="Microsoft.NET.Sdk">
<ItemGroup>
<ProjectReference Include="..\BMapSharp\BMapSharp.csproj" />
</ItemGroup>
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net8.0</TargetFramework>

60
BMapBindings/BMapSharp/BMapSharpTestbench/Program.cs
View File

@ -1,12 +1,58 @@
using System;
using System.Text;
namespace BMapSharpTestbench {
internal class Program {
static void Main(string[] args) {
// Check environment
Console.OutputEncoding = Encoding.UTF8;
if (!BMapSharp.BMapWrapper.Utils.IsBMapAvailable()) {
Console.WriteLine("Fail to initialize native BMap.");
Environment.Exit(0);
}
// Waiting debugger
int pid = System.Diagnostics.Process.GetCurrentProcess().Id;
Console.WriteLine($"C# PID is {pid}. Waiting debugger, press any key to continue...");
Console.ReadKey(true);
// Start testbench
string file_name = "Level_02.NMO";
string temp_folder = "Temp";
string texture_folder = "F:\\Ballance\\Ballance\\Textures";
string[] encodings = ["cp1252", "gb2312"];
using (var reader = new BMapSharp.BMapWrapper.BMFileReader(file_name, temp_folder, texture_folder, encodings)) {
Console.WriteLine("===== Groups =====");
foreach (var gp in reader.GetGroups()) {
Console.WriteLine(gp.GetName());
}
Console.WriteLine("===== 3dObjects =====");
foreach (var obj in reader.Get3dObjects()) {
Console.WriteLine(obj.GetName());
}
Console.WriteLine("===== Meshes =====");
foreach (var mesh in reader.GetMeshes()) {
Console.WriteLine(mesh.GetName());
}
Console.WriteLine("===== Materials =====");
foreach (var mtl in reader.GetMaterials()) {
Console.WriteLine(mtl.GetName());
}
Console.WriteLine("===== Textures =====");
foreach (var tex in reader.GetTextures()) {
Console.WriteLine(tex.GetName());
}
}
Console.WriteLine("===== Done =====");
Console.ReadKey(true);
namespace BMapSharpTestbench // Note: actual namespace depends on the project name.
{
internal class Program
{
static void Main(string[] args)
{
Console.WriteLine("Hello World!");
}
}
}

2
BMapBindings/PyBMap/testbench.py
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@ -13,7 +13,7 @@ def main() -> None:
for gp in reader.get_groups():
print(gp.get_name())
print('===== Objects =====')
print('===== 3dObjects =====')
for obj in reader.get_3dobjects():
print(obj.get_name())

12
CodeGen/BMapBindings/CSharpWriter.java
View File

@ -45,14 +45,22 @@ public class CSharpWriter {
// use "switch" to check variable type
switch (vt_base_type) {
case "CKSTRING":
// decide direction cookies
String direction_cookie = "";
if (paramdecl.mIsInput) {
direction_cookie = "In";
} else {
direction_cookie = "Out";
}
// only allow 0 and 1 pointer level for string.
switch (vt_pointer_level) {
case 0:
ret.mMarshalAs = "UnmanagedType.LPUTF8Str";
ret.mMarshalAs = "UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(BMStringMarshaler), MarshalCookie = \"" + direction_cookie + "\"";
// ret.mMarshalAs = "UnmanagedType.LPUTF8Str";
ret.mCsType = "string";
break;
case 1:
ret.mMarshalAs = "UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(BMStringArrayMarshaler)";
ret.mMarshalAs = "UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(BMStringArrayMarshaler), MarshalCookie = \"" + direction_cookie + "\"";
ret.mCsType = "string[]";
break;
}