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// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
namespace WixToolset.Clr.Interop
{
using System;
using System.Runtime.InteropServices;
/// <summary>
/// Interop class for mscorwks.dll assembly name APIs.
/// </summary>
internal sealed class ClrInterop
{
private static readonly Guid referenceIdentityGuid = new Guid("6eaf5ace-7917-4f3c-b129-e046a9704766");
/// <summary>
/// Protect the constructor.
/// </summary>
private ClrInterop()
{
}
/// <summary>
/// Represents a reference to the unique signature of a code object.
/// </summary>
[ComImport]
[Guid("6eaf5ace-7917-4f3c-b129-e046a9704766")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IReferenceIdentity
{
/// <summary>
/// Get an assembly attribute.
/// </summary>
/// <param name="attributeNamespace">Attribute namespace.</param>
/// <param name="attributeName">Attribute name.</param>
/// <returns>The assembly attribute.</returns>
[return: MarshalAs(UnmanagedType.LPWStr)]
string GetAttribute(
[In, MarshalAs(UnmanagedType.LPWStr)] string attributeNamespace,
[In, MarshalAs(UnmanagedType.LPWStr)] string attributeName);
/// <summary>
/// Set an assembly attribute.
/// </summary>
/// <param name="attributeNamespace">Attribute namespace.</param>
/// <param name="attributeName">Attribute name.</param>
/// <param name="attributeValue">Attribute value.</param>
void SetAttribute(
[In, MarshalAs(UnmanagedType.LPWStr)] string attributeNamespace,
[In, MarshalAs(UnmanagedType.LPWStr)] string attributeName,
[In, MarshalAs(UnmanagedType.LPWStr)] string attributeValue);
/// <summary>
/// Get an iterator for the assembly's attributes.
/// </summary>
/// <returns>Assembly attribute enumerator.</returns>
IEnumIDENTITY_ATTRIBUTE EnumAttributes();
/// <summary>
/// Clone an IReferenceIdentity.
/// </summary>
/// <param name="countOfDeltas">Count of deltas.</param>
/// <param name="deltas">The deltas.</param>
/// <returns>Cloned IReferenceIdentity.</returns>
IReferenceIdentity Clone(
[In] IntPtr /*SIZE_T*/ countOfDeltas,
[In, MarshalAs(UnmanagedType.LPArray)] IDENTITY_ATTRIBUTE[] deltas);
}
/// <summary>
/// IEnumIDENTITY_ATTRIBUTE interface.
/// </summary>
[ComImport]
[Guid("9cdaae75-246e-4b00-a26d-b9aec137a3eb")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface IEnumIDENTITY_ATTRIBUTE
{
/// <summary>
/// Gets the next attributes.
/// </summary>
/// <param name="celt">Count of elements.</param>
/// <param name="attributes">Array of attributes being returned.</param>
/// <returns>The next attribute.</returns>
uint Next(
[In] uint celt,
[Out, MarshalAs(UnmanagedType.LPArray)] IDENTITY_ATTRIBUTE[] attributes);
/// <summary>
/// Copy the current attribute into a buffer.
/// </summary>
/// <param name="available">Number of available bytes.</param>
/// <param name="data">Buffer into which attribute should be written.</param>
/// <returns>Pointer to buffer containing the attribute.</returns>
IntPtr CurrentIntoBuffer(
[In] IntPtr /*SIZE_T*/ available,
[Out, MarshalAs(UnmanagedType.LPArray)] byte[] data);
/// <summary>
/// Skip past a number of elements.
/// </summary>
/// <param name="celt">Count of elements to skip.</param>
void Skip([In] uint celt);
/// <summary>
/// Reset the enumeration to the beginning.
/// </summary>
void Reset();
/// <summary>
/// Clone this attribute enumeration.
/// </summary>
/// <returns>Clone of a IEnumIDENTITY_ATTRIBUTE.</returns>
IEnumIDENTITY_ATTRIBUTE Clone();
}
/// <summary>
/// Gets the guid.
/// </summary>
public static Guid ReferenceIdentityGuid
{
get { return referenceIdentityGuid; }
}
/// <summary>
/// Gets an interface pointer to an object with the specified IID, in the assembly at the specified file path.
/// </summary>
/// <param name="wszAssemblyPath">A valid path to the requested assembly.</param>
/// <param name="riid">The IID of the interface to return.</param>
/// <param name="i">The returned interface pointer.</param>
/// <returns>The error code.</returns>
[DllImport("mscorwks.dll", CharSet = CharSet.Unicode, EntryPoint = "GetAssemblyIdentityFromFile")]
internal static extern uint GetAssemblyIdentityFromFile(System.String wszAssemblyPath, ref Guid riid, out IReferenceIdentity i);
/// <summary>
/// Assembly attributes. Contains data about an IReferenceIdentity.
/// </summary>
[StructLayout(LayoutKind.Sequential)]
internal struct IDENTITY_ATTRIBUTE
{
[MarshalAs(UnmanagedType.LPWStr)]
public string AttributeNamespace;
[MarshalAs(UnmanagedType.LPWStr)]
public string AttributeName;
[MarshalAs(UnmanagedType.LPWStr)]
public string AttributeValue;
}
}
}
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