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Extract Strings to separate submodule.

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This commit is contained in:
Ottermandias 2022-10-29 15:53:45 +02:00
parent bc901f3ff6
commit 35baba18bf
75 changed files with 751 additions and 1657 deletions
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157
Penumbra.GameData/Util/Functions.cs
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@ -1,157 +0,0 @@
using System;
using System.Reflection;
using System.Runtime.InteropServices;
using ByteStringFunctions = Penumbra.GameData.ByteString.ByteStringFunctions;
namespace Penumbra.GameData.Util;
public static class Functions
{
public static ulong ComputeCrc64( string name )
{
if( name.Length == 0 )
{
return 0;
}
var lastSlash = name.LastIndexOf( '/' );
if( lastSlash == -1 )
{
return Lumina.Misc.Crc32.Get( name );
}
var folder = name[ ..lastSlash ];
var file = name[ ( lastSlash + 1 ).. ];
return ( ( ulong )Lumina.Misc.Crc32.Get( folder ) << 32 ) | Lumina.Misc.Crc32.Get( file );
}
public static ulong ComputeCrc64( ReadOnlySpan< byte > name )
{
if( name.Length == 0 )
{
return 0;
}
var lastSlash = name.LastIndexOf( ( byte )'/' );
if( lastSlash == -1 )
{
return Lumina.Misc.Crc32.Get( name );
}
var folder = name[ ..lastSlash ];
var file = name[ ( lastSlash + 1 ).. ];
return ( ( ulong )Lumina.Misc.Crc32.Get( folder ) << 32 ) | Lumina.Misc.Crc32.Get( file );
}
private static readonly uint[] CrcTable =
typeof( Lumina.Misc.Crc32 ).GetField( "CrcTable", BindingFlags.Static | BindingFlags.NonPublic )?.GetValue( null ) as uint[]
?? throw new Exception( "Could not fetch CrcTable from Lumina." );
public static unsafe int ComputeCrc64LowerAndSize( byte* ptr, out ulong crc64, out int crc32Ret, out bool isLower, out bool isAscii )
{
var tmp = ptr;
uint crcFolder = 0;
uint crcFile = 0;
var crc32 = uint.MaxValue;
crc64 = 0;
isLower = true;
isAscii = true;
while( true )
{
var value = *tmp;
if( value == 0 )
{
break;
}
if( ByteStringFunctions.AsciiToLower( *tmp ) != *tmp )
{
isLower = false;
}
if( value > 0x80 )
{
isAscii = false;
}
if( value == ( byte )'/' )
{
crcFolder = crc32;
crcFile = uint.MaxValue;
crc32 = CrcTable[ ( byte )( crc32 ^ value ) ] ^ ( crc32 >> 8 );
}
else
{
crcFile = CrcTable[ ( byte )( crcFolder ^ value ) ] ^ ( crcFolder >> 8 );
crc32 = CrcTable[ ( byte )( crc32 ^ value ) ] ^ ( crc32 >> 8 );
}
++tmp;
}
var size = ( int )( tmp - ptr );
crc64 = ~( ( ulong )crcFolder << 32 ) | crcFile;
crc32Ret = ( int )~crc32;
return size;
}
public static unsafe int ComputeCrc32AsciiLowerAndSize( byte* ptr, out int crc32Ret, out bool isLower, out bool isAscii )
{
var tmp = ptr;
var crc32 = uint.MaxValue;
isLower = true;
isAscii = true;
while( true )
{
var value = *tmp;
if( value == 0 )
{
break;
}
if( ByteStringFunctions.AsciiToLower( *tmp ) != *tmp )
{
isLower = false;
}
if( value > 0x80 )
{
isAscii = false;
}
crc32 = CrcTable[ ( byte )( crc32 ^ value ) ] ^ ( crc32 >> 8 );
++tmp;
}
var size = ( int )( tmp - ptr );
crc32Ret = ( int )~crc32;
return size;
}
[DllImport( "msvcrt.dll", EntryPoint = "memcpy", CallingConvention = CallingConvention.Cdecl, SetLastError = false )]
private static extern unsafe IntPtr memcpy( void* dest, void* src, int count );
public static unsafe void MemCpyUnchecked( void* dest, void* src, int count )
=> memcpy( dest, src, count );
[DllImport( "msvcrt.dll", EntryPoint = "memcmp", CallingConvention = CallingConvention.Cdecl, SetLastError = false )]
private static extern unsafe int memcmp( void* b1, void* b2, int count );
public static unsafe int MemCmpUnchecked( void* ptr1, void* ptr2, int count )
=> memcmp( ptr1, ptr2, count );
[DllImport( "msvcrt.dll", EntryPoint = "_memicmp", CallingConvention = CallingConvention.Cdecl, SetLastError = false )]
private static extern unsafe int memicmp( void* b1, void* b2, int count );
public static unsafe int MemCmpCaseInsensitiveUnchecked( void* ptr1, void* ptr2, int count )
=> memicmp( ptr1, ptr2, count );
[DllImport( "msvcrt.dll", EntryPoint = "memset", CallingConvention = CallingConvention.Cdecl, SetLastError = false )]
private static extern unsafe void* memset( void* dest, int c, int count );
public static unsafe void* MemSet( void* dest, byte value, int count )
=> memset( dest, value, count );
}