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Move all files into project subdirectory
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492
Aaru.Helpers/Marshal.cs
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492
Aaru.Helpers/Marshal.cs
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@@ -0,0 +1,492 @@
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// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : Marshal.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Helpers.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Provides marshalling for binary data.
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||||
//
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||||
// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
|
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
// Lesser General Public License for more details.
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||||
//
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||||
// You should have received a copy of the GNU Lesser General Public
|
||||
// License along with this library; if not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2023 Natalia Portillo
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// ****************************************************************************/
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using System;
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using System.Diagnostics.CodeAnalysis;
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using System.Reflection;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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namespace Aaru.Helpers;
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/// <summary>Provides methods to marshal binary data into C# structs</summary>
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||||
[SuppressMessage("ReSharper", "MemberCanBePrivate.Global")]
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[SuppressMessage("ReSharper", "UnusedMember.Global")]
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public static class Marshal
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||||
{
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/// <summary>Returns the size of an unmanaged type in bytes.</summary>
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/// <typeparam name="T">The type whose size is to be returned.</typeparam>
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||||
/// <returns>The size, in bytes, of the type that is specified by the <see cref="T" /> generic type parameter.</returns>
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||||
[MethodImpl(MethodImplOptions.AggressiveInlining)]
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||||
public static int SizeOf<T>() => System.Runtime.InteropServices.Marshal.SizeOf<T>();
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||||
|
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/// <summary>Marshal little-endian binary data to a structure</summary>
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/// <param name="bytes">Byte array containing the binary data</param>
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/// <typeparam name="T">Type of the structure to marshal</typeparam>
|
||||
/// <returns>The binary data marshalled in a structure with the specified type</returns>
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||||
[MethodImpl(MethodImplOptions.AggressiveInlining)]
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||||
public static T ByteArrayToStructureLittleEndian<T>(byte[] bytes) where T : struct
|
||||
{
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||||
var ptr = GCHandle.Alloc(bytes, GCHandleType.Pinned);
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||||
|
||||
var str = (T)(System.Runtime.InteropServices.Marshal.PtrToStructure(ptr.AddrOfPinnedObject(), typeof(T)) ??
|
||||
default(T));
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||||
|
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ptr.Free();
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||||
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return str;
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}
|
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|
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/// <summary>Marshal little-endian binary data to a structure</summary>
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/// <param name="bytes">Byte array containing the binary data</param>
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/// <param name="start">Start on the array where the structure begins</param>
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/// <param name="length">Length of the structure in bytes</param>
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||||
/// <typeparam name="T">Type of the structure to marshal</typeparam>
|
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/// <returns>The binary data marshalled in a structure with the specified type</returns>
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||||
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||||
public static T ByteArrayToStructureLittleEndian<T>(byte[] bytes, int start, int length) where T : struct
|
||||
{
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||||
Span<byte> span = bytes;
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||||
|
||||
return ByteArrayToStructureLittleEndian<T>(span.Slice(start, length).ToArray());
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||||
}
|
||||
|
||||
/// <summary>Marshal big-endian binary data to a structure</summary>
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/// <param name="bytes">Byte array containing the binary data</param>
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||||
/// <typeparam name="T">Type of the structure to marshal</typeparam>
|
||||
/// <returns>The binary data marshalled in a structure with the specified type</returns>
|
||||
[MethodImpl(MethodImplOptions.AggressiveInlining)]
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||||
public static T ByteArrayToStructureBigEndian<T>(byte[] bytes) where T : struct
|
||||
{
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||||
var ptr = GCHandle.Alloc(bytes, GCHandleType.Pinned);
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||||
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||||
object str = (T)(System.Runtime.InteropServices.Marshal.PtrToStructure(ptr.AddrOfPinnedObject(), typeof(T)) ??
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||||
default(T));
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||||
|
||||
ptr.Free();
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||||
|
||||
return (T)SwapStructureMembersEndian(str);
|
||||
}
|
||||
|
||||
/// <summary>Marshal big-endian binary data to a structure</summary>
|
||||
/// <param name="bytes">Byte array containing the binary data</param>
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/// <param name="start">Start on the array where the structure begins</param>
|
||||
/// <param name="length">Length of the structure in bytes</param>
|
||||
/// <typeparam name="T">Type of the structure to marshal</typeparam>
|
||||
/// <returns>The binary data marshalled in a structure with the specified type</returns>
|
||||
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||||
public static T ByteArrayToStructureBigEndian<T>(byte[] bytes, int start, int length) where T : struct
|
||||
{
|
||||
Span<byte> span = bytes;
|
||||
|
||||
return ByteArrayToStructureBigEndian<T>(span.Slice(start, length).ToArray());
|
||||
}
|
||||
|
||||
/// <summary>Marshal PDP-11 binary data to a structure</summary>
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||||
/// <param name="bytes">Byte array containing the binary data</param>
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||||
/// <typeparam name="T">Type of the structure to marshal</typeparam>
|
||||
/// <returns>The binary data marshalled in a structure with the specified type</returns>
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||||
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||||
public static T ByteArrayToStructurePdpEndian<T>(byte[] bytes) where T : struct
|
||||
{
|
||||
{
|
||||
var ptr = GCHandle.Alloc(bytes, GCHandleType.Pinned);
|
||||
|
||||
object str =
|
||||
(T)(System.Runtime.InteropServices.Marshal.PtrToStructure(ptr.AddrOfPinnedObject(), typeof(T)) ??
|
||||
default(T));
|
||||
|
||||
ptr.Free();
|
||||
|
||||
return (T)SwapStructureMembersEndianPdp(str);
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>Marshal PDP-11 binary data to a structure</summary>
|
||||
/// <param name="bytes">Byte array containing the binary data</param>
|
||||
/// <param name="start">Start on the array where the structure begins</param>
|
||||
/// <param name="length">Length of the structure in bytes</param>
|
||||
/// <typeparam name="T">Type of the structure to marshal</typeparam>
|
||||
/// <returns>The binary data marshalled in a structure with the specified type</returns>
|
||||
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||||
public static T ByteArrayToStructurePdpEndian<T>(byte[] bytes, int start, int length) where T : struct
|
||||
{
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||||
Span<byte> span = bytes;
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||||
|
||||
return ByteArrayToStructurePdpEndian<T>(span.Slice(start, length).ToArray());
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Marshal little-endian binary data to a structure. If the structure type contains any non value type, this
|
||||
/// method will crash.
|
||||
/// </summary>
|
||||
/// <param name="bytes">Byte array containing the binary data</param>
|
||||
/// <typeparam name="T">Type of the structure to marshal</typeparam>
|
||||
/// <returns>The binary data marshalled in a structure with the specified type</returns>
|
||||
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||||
public static T SpanToStructureLittleEndian<T>(ReadOnlySpan<byte> bytes) where T : struct =>
|
||||
MemoryMarshal.Read<T>(bytes);
|
||||
|
||||
/// <summary>
|
||||
/// Marshal little-endian binary data to a structure. If the structure type contains any non value type, this
|
||||
/// method will crash.
|
||||
/// </summary>
|
||||
/// <param name="bytes">Byte span containing the binary data</param>
|
||||
/// <param name="start">Start on the span where the structure begins</param>
|
||||
/// <param name="length">Length of the structure in bytes</param>
|
||||
/// <typeparam name="T">Type of the structure to marshal</typeparam>
|
||||
/// <returns>The binary data marshalled in a structure with the specified type</returns>
|
||||
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||||
public static T SpanToStructureLittleEndian<T>(ReadOnlySpan<byte> bytes, int start, int length) where T : struct =>
|
||||
MemoryMarshal.Read<T>(bytes.Slice(start, length));
|
||||
|
||||
/// <summary>
|
||||
/// Marshal big-endian binary data to a structure. If the structure type contains any non value type, this method
|
||||
/// will crash.
|
||||
/// </summary>
|
||||
/// <param name="bytes">Byte array containing the binary data</param>
|
||||
/// <typeparam name="T">Type of the structure to marshal</typeparam>
|
||||
/// <returns>The binary data marshalled in a structure with the specified type</returns>
|
||||
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||||
public static T SpanToStructureBigEndian<T>(ReadOnlySpan<byte> bytes) where T : struct
|
||||
{
|
||||
T str = SpanToStructureLittleEndian<T>(bytes);
|
||||
|
||||
return (T)SwapStructureMembersEndian(str);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Marshal big-endian binary data to a structure. If the structure type contains any non value type, this method
|
||||
/// will crash.
|
||||
/// </summary>
|
||||
/// <param name="bytes">Byte span containing the binary data</param>
|
||||
/// <param name="start">Start on the span where the structure begins</param>
|
||||
/// <param name="length">Length of the structure in bytes</param>
|
||||
/// <typeparam name="T">Type of the structure to marshal</typeparam>
|
||||
/// <returns>The binary data marshalled in a structure with the specified type</returns>
|
||||
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||||
public static T SpanToStructureBigEndian<T>(ReadOnlySpan<byte> bytes, int start, int length) where T : struct
|
||||
{
|
||||
T str = SpanToStructureLittleEndian<T>(bytes.Slice(start, length));
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||||
|
||||
return (T)SwapStructureMembersEndian(str);
|
||||
}
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||||
|
||||
/// <summary>
|
||||
/// Marshal PDP-11 binary data to a structure. If the structure type contains any non value type, this method will
|
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/// crash.
|
||||
/// </summary>
|
||||
/// <param name="bytes">Byte array containing the binary data</param>
|
||||
/// <typeparam name="T">Type of the structure to marshal</typeparam>
|
||||
/// <returns>The binary data marshalled in a structure with the specified type</returns>
|
||||
[MethodImpl(MethodImplOptions.AggressiveInlining)]
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||||
public static T SpanToStructurePdpEndian<T>(ReadOnlySpan<byte> bytes) where T : struct
|
||||
{
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object str = SpanToStructureLittleEndian<T>(bytes);
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||||
|
||||
return (T)SwapStructureMembersEndianPdp(str);
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||||
}
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||||
|
||||
/// <summary>
|
||||
/// Marshal PDP-11 binary data to a structure. If the structure type contains any non value type, this method will
|
||||
/// crash.
|
||||
/// </summary>
|
||||
/// <param name="bytes">Byte array containing the binary data</param>
|
||||
/// <param name="start">Start on the span where the structure begins</param>
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/// <param name="length">Length of the structure in bytes</param>
|
||||
/// <typeparam name="T">Type of the structure to marshal</typeparam>
|
||||
/// <returns>The binary data marshalled in a structure with the specified type</returns>
|
||||
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||||
public static T SpanToStructurePdpEndian<T>(ReadOnlySpan<byte> bytes, int start, int length) where T : struct
|
||||
{
|
||||
object str = SpanToStructureLittleEndian<T>(bytes.Slice(start, length));
|
||||
|
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return (T)SwapStructureMembersEndianPdp(str);
|
||||
}
|
||||
|
||||
/// <summary>
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/// Marshal a structure depending on the decoration of <see cref="MarshallingPropertiesAttribute" />. If the
|
||||
/// decoration is not present it will marshal as a reference type containing little endian structure.
|
||||
/// </summary>
|
||||
/// <param name="bytes">Byte array containing the binary data</param>
|
||||
/// <typeparam name="T">Type of the structure to marshal</typeparam>
|
||||
/// <returns>The binary data marshalled in a structure with the specified type</returns>
|
||||
/// <exception cref="ArgumentOutOfRangeException">
|
||||
/// The <see cref="MarshallingPropertiesAttribute" /> contains an unsupported
|
||||
/// endian
|
||||
/// </exception>
|
||||
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||||
public static T MarshalStructure<T>(byte[] bytes) where T : struct
|
||||
{
|
||||
if(typeof(T).GetCustomAttribute(typeof(MarshallingPropertiesAttribute)) is not MarshallingPropertiesAttribute
|
||||
properties)
|
||||
return ByteArrayToStructureLittleEndian<T>(bytes);
|
||||
|
||||
return properties.Endian switch
|
||||
{
|
||||
BitEndian.Little => properties.HasReferences
|
||||
? ByteArrayToStructureLittleEndian<T>(bytes)
|
||||
: SpanToStructureLittleEndian<T>(bytes),
|
||||
BitEndian.Big => properties.HasReferences
|
||||
? ByteArrayToStructureBigEndian<T>(bytes)
|
||||
: SpanToStructureBigEndian<T>(bytes),
|
||||
BitEndian.Pdp => properties.HasReferences
|
||||
? ByteArrayToStructurePdpEndian<T>(bytes)
|
||||
: SpanToStructurePdpEndian<T>(bytes),
|
||||
_ => throw new ArgumentOutOfRangeException()
|
||||
};
|
||||
}
|
||||
|
||||
/// <summary>Swaps all members of a structure</summary>
|
||||
/// <param name="str"></param>
|
||||
/// <returns></returns>
|
||||
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||||
[SuppressMessage("ReSharper", "InconsistentNaming")]
|
||||
public static object SwapStructureMembersEndian(object str)
|
||||
{
|
||||
Type t = str.GetType();
|
||||
FieldInfo[] fieldInfo = t.GetFields();
|
||||
|
||||
foreach(FieldInfo fi in fieldInfo)
|
||||
{
|
||||
if(fi.FieldType == typeof(short) ||
|
||||
fi.FieldType.IsEnum && fi.FieldType.GetEnumUnderlyingType() == typeof(short))
|
||||
{
|
||||
var x = (short)(fi.GetValue(str) ?? default(short));
|
||||
fi.SetValue(str, (short)(x << 8 | x >> 8 & 0xFF));
|
||||
}
|
||||
else if(fi.FieldType == typeof(int) ||
|
||||
fi.FieldType.IsEnum && fi.FieldType.GetEnumUnderlyingType() == typeof(int))
|
||||
{
|
||||
var x = (int)(fi.GetValue(str) ?? default(int));
|
||||
x = (int)(x << 8 & 0xFF00FF00 | (uint)x >> 8 & 0xFF00FF);
|
||||
fi.SetValue(str, (int)((uint)x << 16 | (uint)x >> 16 & 0xFFFF));
|
||||
}
|
||||
else if(fi.FieldType == typeof(long) ||
|
||||
fi.FieldType.IsEnum && fi.FieldType.GetEnumUnderlyingType() == typeof(long))
|
||||
{
|
||||
var x = (long)(fi.GetValue(str) ?? default(long));
|
||||
x = (x & 0x00000000FFFFFFFF) << 32 | (long)(((ulong)x & 0xFFFFFFFF00000000) >> 32);
|
||||
x = (x & 0x0000FFFF0000FFFF) << 16 | (long)(((ulong)x & 0xFFFF0000FFFF0000) >> 16);
|
||||
x = (x & 0x00FF00FF00FF00FF) << 8 | (long)(((ulong)x & 0xFF00FF00FF00FF00) >> 8);
|
||||
|
||||
fi.SetValue(str, x);
|
||||
}
|
||||
else if(fi.FieldType == typeof(ushort) ||
|
||||
fi.FieldType.IsEnum && fi.FieldType.GetEnumUnderlyingType() == typeof(ushort))
|
||||
{
|
||||
var x = (ushort)(fi.GetValue(str) ?? default(ushort));
|
||||
fi.SetValue(str, (ushort)(x << 8 | x >> 8));
|
||||
}
|
||||
else if(fi.FieldType == typeof(uint) ||
|
||||
fi.FieldType.IsEnum && fi.FieldType.GetEnumUnderlyingType() == typeof(uint))
|
||||
{
|
||||
var x = (uint)(fi.GetValue(str) ?? default(uint));
|
||||
x = x << 8 & 0xFF00FF00 | x >> 8 & 0xFF00FF;
|
||||
fi.SetValue(str, x << 16 | x >> 16);
|
||||
}
|
||||
else if(fi.FieldType == typeof(ulong) ||
|
||||
fi.FieldType.IsEnum && fi.FieldType.GetEnumUnderlyingType() == typeof(ulong))
|
||||
{
|
||||
var x = (ulong)(fi.GetValue(str) ?? default(ulong));
|
||||
x = (x & 0x00000000FFFFFFFF) << 32 | (x & 0xFFFFFFFF00000000) >> 32;
|
||||
x = (x & 0x0000FFFF0000FFFF) << 16 | (x & 0xFFFF0000FFFF0000) >> 16;
|
||||
x = (x & 0x00FF00FF00FF00FF) << 8 | (x & 0xFF00FF00FF00FF00) >> 8;
|
||||
fi.SetValue(str, x);
|
||||
}
|
||||
else if(fi.FieldType == typeof(float))
|
||||
{
|
||||
var flt = (float)(fi.GetValue(str) ?? default(float));
|
||||
byte[] flt_b = BitConverter.GetBytes(flt);
|
||||
|
||||
fi.SetValue(str, BitConverter.ToSingle(new[]
|
||||
{
|
||||
flt_b[3], flt_b[2], flt_b[1], flt_b[0]
|
||||
}, 0));
|
||||
}
|
||||
else if(fi.FieldType == typeof(double))
|
||||
{
|
||||
var dbl = (double)(fi.GetValue(str) ?? default(double));
|
||||
byte[] dbl_b = BitConverter.GetBytes(dbl);
|
||||
|
||||
fi.SetValue(str, BitConverter.ToDouble(new[]
|
||||
{
|
||||
dbl_b[7], dbl_b[6], dbl_b[5], dbl_b[4], dbl_b[3], dbl_b[2], dbl_b[1], dbl_b[0]
|
||||
}, 0));
|
||||
}
|
||||
else if(fi.FieldType == typeof(byte) || fi.FieldType == typeof(sbyte))
|
||||
{
|
||||
// Do nothing, can't byteswap them!
|
||||
}
|
||||
else if(fi.FieldType == typeof(Guid))
|
||||
{
|
||||
// TODO: Swap GUID
|
||||
}
|
||||
|
||||
// TODO: Swap arrays
|
||||
else if(fi.FieldType.IsValueType && fi.FieldType is { IsEnum: false, IsArray: false })
|
||||
{
|
||||
object obj = fi.GetValue(str);
|
||||
object strc = SwapStructureMembersEndian(obj);
|
||||
fi.SetValue(str, strc);
|
||||
}
|
||||
}
|
||||
|
||||
return str;
|
||||
}
|
||||
|
||||
/// <summary>Swaps all fields in an structure considering them to follow PDP endian conventions</summary>
|
||||
/// <param name="str">Source structure</param>
|
||||
/// <returns>Resulting structure</returns>
|
||||
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||||
public static object SwapStructureMembersEndianPdp(object str)
|
||||
{
|
||||
Type t = str.GetType();
|
||||
FieldInfo[] fieldInfo = t.GetFields();
|
||||
|
||||
foreach(FieldInfo fi in fieldInfo)
|
||||
{
|
||||
if(fi.FieldType == typeof(short) ||
|
||||
fi.FieldType == typeof(long) ||
|
||||
fi.FieldType == typeof(ushort) ||
|
||||
fi.FieldType == typeof(ulong) ||
|
||||
fi.FieldType == typeof(float) ||
|
||||
fi.FieldType == typeof(double) ||
|
||||
fi.FieldType == typeof(byte) ||
|
||||
fi.FieldType == typeof(sbyte) ||
|
||||
fi.FieldType == typeof(Guid))
|
||||
{
|
||||
// Do nothing
|
||||
}
|
||||
else if(fi.FieldType == typeof(int) ||
|
||||
fi.FieldType.IsEnum && fi.FieldType.GetEnumUnderlyingType() == typeof(int))
|
||||
{
|
||||
var x = (int)(fi.GetValue(str) ?? default(int));
|
||||
fi.SetValue(str, (x & 0xffffu) << 16 | (x & 0xffff0000u) >> 16);
|
||||
}
|
||||
else if(fi.FieldType == typeof(uint) ||
|
||||
fi.FieldType.IsEnum && fi.FieldType.GetEnumUnderlyingType() == typeof(uint))
|
||||
{
|
||||
var x = (uint)(fi.GetValue(str) ?? default(uint));
|
||||
fi.SetValue(str, (x & 0xffffu) << 16 | (x & 0xffff0000u) >> 16);
|
||||
}
|
||||
|
||||
// TODO: Swap arrays
|
||||
else if(fi.FieldType.IsValueType && fi.FieldType is { IsEnum: false, IsArray: false })
|
||||
{
|
||||
object obj = fi.GetValue(str);
|
||||
object strc = SwapStructureMembersEndianPdp(obj);
|
||||
fi.SetValue(str, strc);
|
||||
}
|
||||
}
|
||||
|
||||
return str;
|
||||
}
|
||||
|
||||
/// <summary>Marshal a structure to little-endian binary data</summary>
|
||||
/// <param name="str">The structure you want to marshal to binary</param>
|
||||
/// <typeparam name="T">Type of the structure to marshal</typeparam>
|
||||
/// <returns>The byte array representing the given structure</returns>
|
||||
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||||
public static byte[] StructureToByteArrayLittleEndian<T>(T str) where T : struct
|
||||
{
|
||||
var buf = new byte[SizeOf<T>()];
|
||||
var ptr = GCHandle.Alloc(buf, GCHandleType.Pinned);
|
||||
System.Runtime.InteropServices.Marshal.StructureToPtr(str, ptr.AddrOfPinnedObject(), false);
|
||||
ptr.Free();
|
||||
|
||||
return buf;
|
||||
}
|
||||
|
||||
/// <summary>Marshal a structure to little-endian binary data</summary>
|
||||
/// <param name="str">The structure you want to marshal to binary</param>
|
||||
/// <typeparam name="T">Type of the structure to marshal</typeparam>
|
||||
/// <returns>The byte array representing the given structure</returns>
|
||||
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||||
public static byte[] StructureToByteArrayBigEndian<T>(T str) where T : struct =>
|
||||
StructureToByteArrayLittleEndian((T)SwapStructureMembersEndian(str));
|
||||
|
||||
/// <summary>Converts a hexadecimal string into a byte array</summary>
|
||||
/// <param name="hex">Hexadecimal string</param>
|
||||
/// <param name="outBuf">Resulting byte array</param>
|
||||
/// <returns>Number of output bytes processed</returns>
|
||||
public static int ConvertFromHexAscii(string hex, out byte[] outBuf)
|
||||
{
|
||||
outBuf = null;
|
||||
|
||||
if(hex is null or "")
|
||||
return -1;
|
||||
|
||||
var off = 0;
|
||||
|
||||
if(hex[0] == '0' && (hex[1] == 'x' || hex[1] == 'X'))
|
||||
off = 2;
|
||||
|
||||
outBuf = new byte[(hex.Length - off) / 2];
|
||||
var count = 0;
|
||||
|
||||
for(int i = off; i < hex.Length; i += 2)
|
||||
{
|
||||
char c = hex[i];
|
||||
|
||||
if(c is < '0' or > '9' and < 'A' or > 'F' and < 'a' or > 'f')
|
||||
break;
|
||||
|
||||
c -= c switch
|
||||
{
|
||||
>= 'a' and <= 'f' => '\u0057',
|
||||
>= 'A' and <= 'F' => '\u0037',
|
||||
_ => '\u0030'
|
||||
};
|
||||
|
||||
outBuf[(i - off) / 2] = (byte)(c << 4);
|
||||
|
||||
c = hex[i + 1];
|
||||
|
||||
if(c is < '0' or > '9' and < 'A' or > 'F' and < 'a' or > 'f')
|
||||
break;
|
||||
|
||||
c -= c switch
|
||||
{
|
||||
>= 'a' and <= 'f' => '\u0057',
|
||||
>= 'A' and <= 'F' => '\u0037',
|
||||
_ => '\u0030'
|
||||
};
|
||||
|
||||
outBuf[(i - off) / 2] += (byte)c;
|
||||
|
||||
count++;
|
||||
}
|
||||
|
||||
return count;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user