mirror of https://github.com/dahall/Vanara.git
Extended and improved object GetValue(this REG_VALUE_TYPE value) method
dahall
parent
583a0a9f93
commit
9609ce7eee
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@ -1,19 +1,105 @@
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Linq;
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using System.Reflection;
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using System.Runtime.Serialization;
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using System.Runtime.InteropServices;
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using Vanara.InteropServices;
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using Vanara.PInvoke;
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namespace Vanara.Extensions
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{
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/// <summary>Extension methods for registry types.</summary>
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public static class RegistryTypeExt
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{
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/// <summary>Gets a <see cref="REG_VALUE_TYPE"/> given a system type.</summary>
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/// <param name="type">The type.</param>
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/// <returns>A compatible <see cref="REG_VALUE_TYPE"/>. If no good match is found, <see cref="REG_VALUE_TYPE.REG_SZ"/> is returned.</returns>
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public static REG_VALUE_TYPE GetFromType(Type type)
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{
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if (typeof(IEnumerable<string>).IsAssignableFrom(type))
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return REG_VALUE_TYPE.REG_MULTI_SZ;
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switch (Type.GetTypeCode(type))
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{
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case TypeCode.SByte:
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case TypeCode.Byte:
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case TypeCode.Int16:
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case TypeCode.UInt16:
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case TypeCode.Int32:
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case TypeCode.UInt32:
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return REG_VALUE_TYPE.REG_DWORD;
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case TypeCode.Int64:
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case TypeCode.UInt64:
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return REG_VALUE_TYPE.REG_QWORD;
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case TypeCode.Char:
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case TypeCode.String:
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return REG_VALUE_TYPE.REG_SZ;
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default:
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break;
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}
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if (typeof(IEnumerable<byte>).IsAssignableFrom(type) || type.IsMarshalable())
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return REG_VALUE_TYPE.REG_BINARY;
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return REG_VALUE_TYPE.REG_SZ;
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}
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/// <summary>Gets a <see cref="REG_VALUE_TYPE"/> given a system type.</summary>
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/// <typeparam name="T">The type.</typeparam>
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/// <returns>A compatible <see cref="REG_VALUE_TYPE"/>. If no good match is found, <see cref="REG_VALUE_TYPE.REG_SZ"/> is returned.</returns>
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public static REG_VALUE_TYPE GetFromType<T>() => GetFromType(typeof(T));
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/// <summary>Extract the value of this registry type from a pointer.</summary>
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/// <param name="value">The registry type value.</param>
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/// <param name="ptr">The allocated memory pointer.</param>
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/// <param name="size">The size of the allocated memory.</param>
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/// <param name="charSet">The character set to use in conversion if applicable.</param>
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/// <returns>The extracted value.</returns>
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/// <exception cref="InvalidOperationException">Registry links cannot be retrived from a pointer. Please use RegOpenKeyEx.</exception>
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public static object GetValue(this REG_VALUE_TYPE value, IntPtr ptr, uint size, CharSet charSet = CharSet.Auto)
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{
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switch (value)
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{
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case REG_VALUE_TYPE.REG_DWORD:
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case REG_VALUE_TYPE.REG_DWORD_BIG_ENDIAN:
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var data = ptr.Convert<byte[]>(4);
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if (BitConverter.IsLittleEndian && value == REG_VALUE_TYPE.REG_DWORD_BIG_ENDIAN || !BitConverter.IsLittleEndian && value == REG_VALUE_TYPE.REG_DWORD)
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Array.Reverse(data);
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return BitConverter.ToUInt32(data, 0);
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case REG_VALUE_TYPE.REG_EXPAND_SZ:
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return Environment.ExpandEnvironmentVariables(StringHelper.GetString(ptr, charSet, size));
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case REG_VALUE_TYPE.REG_MULTI_SZ:
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return ptr.ToStringEnum(charSet, 0, size).ToArray();
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case REG_VALUE_TYPE.REG_QWORD:
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return ptr.Convert<ulong>(size);
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case REG_VALUE_TYPE.REG_SZ:
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return StringHelper.GetString(ptr, charSet, size);
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case REG_VALUE_TYPE.REG_RESOURCE_LIST:
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case REG_VALUE_TYPE.REG_FULL_RESOURCE_DESCRIPTOR:
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case REG_VALUE_TYPE.REG_RESOURCE_REQUIREMENTS_LIST:
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case REG_VALUE_TYPE.REG_BINARY:
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return ptr.Convert<byte[]>(size);
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case REG_VALUE_TYPE.REG_LINK:
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throw new InvalidOperationException("Registry links cannot be retrived from a pointer. Please use RegOpenKeyEx.");
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default:
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case REG_VALUE_TYPE.REG_NONE:
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return ptr;
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}
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}
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}
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}
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namespace Vanara.PInvoke
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{
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/// <summary>
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/// A registry value can store data in various formats. When you store data under a registry value, for instance by calling the
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/// RegSetValueEx function, you can specify one of the following values to indicate the type of data being stored. When you retrieve
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/// a registry value, functions such as RegQueryValueEx use these values to indicate the type of data retrieved.
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/// RegSetValueEx function, you can specify one of the following values to indicate the type of data being stored. When you retrieve a
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/// registry value, functions such as RegQueryValueEx use these values to indicate the type of data retrieved.
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/// </summary>
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[PInvokeData("winnt.h")]
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public enum REG_VALUE_TYPE : uint
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@ -52,8 +138,8 @@ namespace Vanara.PInvoke
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REG_EXPAND_SZ = 2,
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/// <summary>
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/// A null-terminated Unicode string that contains the target path of a symbolic link that was created by calling the
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/// RegCreateKeyEx function with REG_OPTION_CREATE_LINK.
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/// A null-terminated Unicode string that contains the target path of a symbolic link that was created by calling the RegCreateKeyEx
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/// function with REG_OPTION_CREATE_LINK.
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/// </summary>
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REG_LINK = 6,
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@ -62,8 +148,8 @@ namespace Vanara.PInvoke
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/// <para>The following is an example:</para>
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/// <para>String1\0String2\0String3\0LastString\0\0</para>
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/// <para>
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/// The first \0 terminates the first string, the second to the last \0 terminates the last string, and the final \0 terminates
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/// the sequence.Note that the final terminator must be factored into the length of the string.
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/// The first \0 terminates the first string, the second to the last \0 terminates the last string, and the final \0 terminates the
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/// sequence.Note that the final terminator must be factored into the length of the string.
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/// </para>
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/// </summary>
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[CorrespondingType(typeof(IEnumerable<string>))]
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@ -76,8 +162,8 @@ namespace Vanara.PInvoke
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/// <summary>
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/// A 64-bit number in little-endian format.
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/// <para>
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/// Windows is designed to run on little-endian computer architectures. Therefore, this value is defined as REG_QWORD in the
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/// Windows header files.
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/// Windows is designed to run on little-endian computer architectures. Therefore, this value is defined as REG_QWORD in the Windows
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/// header files.
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/// </para>
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/// </summary>
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[CorrespondingType(typeof(ulong))]
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@ -98,82 +184,4 @@ namespace Vanara.PInvoke
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/// <summary>Resource requirement list.</summary>
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REG_RESOURCE_REQUIREMENTS_LIST = 10,
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}
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}
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namespace Vanara.Extensions
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{
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/// <summary>Extension methods for registry types.</summary>
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public static class RegistryTypeExt
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{
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/// <summary>Extract the value of this registry type from a pointer.</summary>
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/// <param name="value">The registry type value.</param>
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/// <param name="ptr">The allocated memory pointer.</param>
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/// <param name="size">The size of the allocated memory.</param>
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/// <returns>The extracted value.</returns>
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public static object GetValue(this Vanara.PInvoke.REG_VALUE_TYPE value, IntPtr ptr, uint size)
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{
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switch (value)
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{
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case PInvoke.REG_VALUE_TYPE.REG_DWORD:
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case PInvoke.REG_VALUE_TYPE.REG_DWORD_BIG_ENDIAN:
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var data = IntPtrConverter.Convert<byte[]>(ptr, 4);
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if (BitConverter.IsLittleEndian && value == REG_VALUE_TYPE.REG_DWORD_BIG_ENDIAN || !BitConverter.IsLittleEndian && value == REG_VALUE_TYPE.REG_DWORD)
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Array.Reverse(data);
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return BitConverter.ToUInt32(data, 0);
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case PInvoke.REG_VALUE_TYPE.REG_EXPAND_SZ:
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return Environment.ExpandEnvironmentVariables(StringHelper.GetString(ptr, System.Runtime.InteropServices.CharSet.Auto, size));
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case PInvoke.REG_VALUE_TYPE.REG_MULTI_SZ:
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return ptr.ToStringEnum(System.Runtime.InteropServices.CharSet.Auto, 0, size).ToArray();
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case PInvoke.REG_VALUE_TYPE.REG_QWORD:
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return IntPtrConverter.Convert<ulong>(ptr, size);
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case PInvoke.REG_VALUE_TYPE.REG_SZ:
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return StringHelper.GetString(ptr, System.Runtime.InteropServices.CharSet.Auto, size);
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case PInvoke.REG_VALUE_TYPE.REG_RESOURCE_LIST:
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case PInvoke.REG_VALUE_TYPE.REG_FULL_RESOURCE_DESCRIPTOR:
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case PInvoke.REG_VALUE_TYPE.REG_RESOURCE_REQUIREMENTS_LIST:
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case PInvoke.REG_VALUE_TYPE.REG_BINARY:
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return IntPtrConverter.Convert<byte[]>(ptr, size);
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case PInvoke.REG_VALUE_TYPE.REG_LINK:
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throw new InvalidOperationException("Registry links cannot be retrived from a pointer. Please use RegOpenKeyEx.");
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default:
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case PInvoke.REG_VALUE_TYPE.REG_NONE:
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return ptr;
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}
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}
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/// <summary>Gets a <see cref="REG_VALUE_TYPE"/> given a system type.</summary>
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/// <param name="type">The type.</param>
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/// <returns>A compatible <see cref="REG_VALUE_TYPE"/>. If no good match is found, <see cref="REG_VALUE_TYPE.REG_SZ"/> is returned.</returns>
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public static REG_VALUE_TYPE GetFromType(Type type)
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{
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if (typeof(IEnumerable<string>).IsAssignableFrom(type))
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return REG_VALUE_TYPE.REG_MULTI_SZ;
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switch (Type.GetTypeCode(type))
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{
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case TypeCode.SByte:
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case TypeCode.Byte:
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case TypeCode.Int16:
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case TypeCode.UInt16:
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case TypeCode.Int32:
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case TypeCode.UInt32:
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return REG_VALUE_TYPE.REG_DWORD;
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case TypeCode.Int64:
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case TypeCode.UInt64:
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return REG_VALUE_TYPE.REG_QWORD;
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case TypeCode.Char:
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case TypeCode.String:
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return REG_VALUE_TYPE.REG_SZ;
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default:
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break;
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}
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if (typeof(IEnumerable<byte>).IsAssignableFrom(type) || type.IsMarshalable())
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return REG_VALUE_TYPE.REG_BINARY;
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return REG_VALUE_TYPE.REG_SZ;
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}
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/// <summary>Gets a <see cref="REG_VALUE_TYPE"/> given a system type.</summary>
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/// <typeparam name="T">The type.</typeparam>
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/// <returns>A compatible <see cref="REG_VALUE_TYPE"/>. If no good match is found, <see cref="REG_VALUE_TYPE.REG_SZ"/> is returned.</returns>
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public static REG_VALUE_TYPE GetFromType<T>() => GetFromType(typeof(T));
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}
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}
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