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Added CorrespondingType attributes and GetValue extension method for REG_VALUE_TYPE

pull/60/head
David Hall 2019-03-07 09:28:20 -07:00
parent 708d2fc39d
commit 1b42ce1df2
1 changed files with 48 additions and 0 deletions
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48
PInvoke/Shared/Registry.cs
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@ -1,4 +1,5 @@
using System;
using Vanara.InteropServices;
namespace Vanara.PInvoke
{
@ -14,9 +15,11 @@ namespace Vanara.PInvoke
REG_NONE = 0,
/// <summary>Binary data in any form.</summary>
[CorrespondingType(typeof(byte[]))]
REG_BINARY = 3,
/// <summary>A 32-bit number.</summary>
[CorrespondingType(typeof(uint))]
REG_DWORD = 4,
/// <summary>
@ -24,6 +27,7 @@ namespace Vanara.PInvoke
/// <para>Windows is designed to run on little-endian computer architectures.</para>
/// <para>Therefore, this value is defined as REG_DWORD in the Windows header files.</para>
/// </summary>
[CorrespondingType(typeof(uint))]
REG_DWORD_LITTLE_ENDIAN = 4,
/// <summary>
@ -57,6 +61,7 @@ namespace Vanara.PInvoke
REG_MULTI_SZ = 7,
/// <summary>A 64-bit number.</summary>
[CorrespondingType(typeof(ulong))]
REG_QWORD = 11,
/// <summary>
@ -66,6 +71,7 @@ namespace Vanara.PInvoke
/// Windows header files.
/// </para>
/// </summary>
[CorrespondingType(typeof(ulong))]
REG_QWORD_LITTLE_ENDIAN = 11,
/// <summary>
@ -82,4 +88,46 @@ namespace Vanara.PInvoke
/// <summary>Resource requirement list.</summary>
REG_RESOURCE_REQUIREMENTS_LIST = 10,
}
}
namespace Vanara.Extensions
{
/// <summary>Extension methods for registry types.</summary>
public static class RegistryTypeExt
{
/// <summary>Extract the value of this registry type from a pointer.</summary>
/// <param name="value">The registry type value.</param>
/// <param name="ptr">The allocated memory pointer.</param>
/// <param name="size">The size of the allocated memory.</param>
/// <returns>The extracted value.</returns>
public static object GetValue(this Vanara.PInvoke.REG_VALUE_TYPE value, IntPtr ptr, uint size)
{
switch (value)
{
case PInvoke.REG_VALUE_TYPE.REG_DWORD:
return IntPtrConverter.Convert<uint>(ptr, size);
case PInvoke.REG_VALUE_TYPE.REG_DWORD_BIG_ENDIAN:
var data = IntPtrConverter.Convert<byte[]>(ptr, 4);
return unchecked((uint)((data[0] << 24) | (data[1] << 16) | (data[2] << 8) | data[3]));
case PInvoke.REG_VALUE_TYPE.REG_EXPAND_SZ:
return Environment.ExpandEnvironmentVariables(StringHelper.GetString(ptr));
case PInvoke.REG_VALUE_TYPE.REG_LINK:
return new Uri(StringHelper.GetString(ptr));
case PInvoke.REG_VALUE_TYPE.REG_MULTI_SZ:
return ptr.ToStringEnum();
case PInvoke.REG_VALUE_TYPE.REG_QWORD:
return IntPtrConverter.Convert<ulong>(ptr, size);
case PInvoke.REG_VALUE_TYPE.REG_SZ:
return StringHelper.GetString(ptr);
case PInvoke.REG_VALUE_TYPE.REG_RESOURCE_LIST:
case PInvoke.REG_VALUE_TYPE.REG_FULL_RESOURCE_DESCRIPTOR:
case PInvoke.REG_VALUE_TYPE.REG_RESOURCE_REQUIREMENTS_LIST:
case PInvoke.REG_VALUE_TYPE.REG_BINARY:
return IntPtrConverter.Convert<byte[]>(ptr, size);
default:
case PInvoke.REG_VALUE_TYPE.REG_NONE:
return ptr;
}
}
}
}