77 lines
3.3 KiB
C#
77 lines
3.3 KiB
C#
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using System;
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using System.Runtime.InteropServices;
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using Unity.Collections;
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using Unity.Collections.LowLevel.Unsafe;
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namespace UnityEngine.XR.ARKit
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{
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struct NSString : INSObject, IDisposable, IEquatable<NSString>
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{
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IntPtr m_Self;
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public NSString(IntPtr ptr) => m_Self = ptr;
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public IntPtr AsIntPtr() => m_Self;
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public void Dispose() => NSObject.Dispose(ref m_Self);
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public NSString(string str) => this = Init(str, str?.Length ?? 0, NSStringEncoding.NSUTF16LittleEndianStringEncoding);
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public static readonly NSString underscore = new NSString("_");
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public string GetStringAndDispose()
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{
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using (this)
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{
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return ToString();
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}
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}
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public override string ToString()
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{
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var numberOfBytes = LengthOfBytes(this);
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var numberOfCodeUnits = length;
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unsafe
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{
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using (var buffer = new NativeArray<byte>((int)numberOfBytes, Allocator.Temp, NativeArrayOptions.UninitializedMemory))
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{
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var bufferPtr = buffer.GetUnsafePtr();
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GetUtf16Bytes(this, bufferPtr, numberOfBytes);
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return Marshal.PtrToStringUni(new IntPtr(bufferPtr), numberOfCodeUnits);
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}
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}
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}
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public ulong ulongLength => GetLength(this);
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public int length => (int)ulongLength;
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public Class staticClass => GetClass();
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public bool Equals(NSString other) => NSObject.IsEqual(this, other);
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public override bool Equals(object obj) => obj is NSString other && Equals(other);
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public override int GetHashCode() => NSObject.GetHashCode(this);
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public static bool operator ==(NSString lhs, NSString rhs) => lhs.m_Self == rhs.m_Self;
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public static bool operator !=(NSString lhs, NSString rhs) => lhs.m_Self != rhs.m_Self;
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public static bool operator ==(NSString? lhs, NSString? rhs) => NSObject.ArePointersEqual(lhs, rhs);
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public static bool operator !=(NSString? lhs, NSString? rhs) => !(lhs == rhs);
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void INSObject.SetUnderlyingNativePtr(IntPtr ptr) => m_Self = ptr;
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#if UNITY_EDITOR || !UNITY_XR_ARKIT_LOADER_ENABLED
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static ulong LengthOfBytes(NSString self) => default;
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static unsafe void GetUtf16Bytes(NSString self, void* buffer, ulong maxLength) { }
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static ulong GetLength(NSString self) => default;
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static NSString Init(string str, int length, NSStringEncoding encoding) => default;
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static Class GetClass() => default;
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#else
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[DllImport("__Internal", EntryPoint = "NSString_lengthOfBytesUsingUTF16Encoding")]
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static extern ulong LengthOfBytes(NSString self);
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[DllImport("__Internal", EntryPoint = "NSString_getBytes_maxLength_")]
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static extern unsafe void GetUtf16Bytes(NSString self, void* buffer, ulong maxLength);
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[DllImport("__Internal", EntryPoint = "NSString_get_length")]
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static extern ulong GetLength(NSString self);
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[DllImport("__Internal", EntryPoint = "NSString_initWithBytes_length_encoding_")]
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static extern NSString Init([MarshalAs(UnmanagedType.LPWStr)] string str, int length, NSStringEncoding encoding);
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[DllImport("__Internal", EntryPoint = "NSString_class")]
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static extern Class GetClass();
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#endif
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}
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}
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