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added support for Tiberian Sun MIX filename hashes

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closes #3227
This commit is contained in:
Matthias Mailänder
2013-05-08 20:58:25 +02:00
parent 67cb3c5cf7
commit 7fb85e7abb
6 changed files with 162 additions and 10 deletions
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23
OpenRA.FileFormats/PackageEntry.cs
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@@ -1,6 +1,6 @@
#region Copyright & License Information
/*
* Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
* Copyright 2007-2013 The OpenRA Developers (see AUTHORS)
* This file is part of OpenRA, which is free software. It is made
* available to you under the terms of the GNU General Public License
* as published by the Free Software Foundation. For more information,
@@ -51,7 +51,7 @@ namespace OpenRA.FileFormats
return "0x{0:x8} - offset 0x{1:x8} - length 0x{2:x8}".F(Hash, Offset, Length);
}
public static uint HashFilename(string name)
public static uint HashFilename(string name) // Red Alert 1 and Tiberian Dawn
{
if (name.Length > 12)
name = name.Substring(0, 12);
@@ -72,12 +72,29 @@ namespace OpenRA.FileFormats
return result;
}
public static uint CrcHashFilename(string name) // Tiberian Sun
{
name = name.ToUpperInvariant();
var l = name.Length;
int a = l >> 2;
if ((l & 3) != 0)
{
name += (char)(l - (a << 2));
int i = 3 - (l & 3);
while (i-- != 0)
name += name[a << 2];
}
return CRC32.Calculate(Encoding.ASCII.GetBytes(name));
}
static Dictionary<uint, string> Names = new Dictionary<uint,string>();
public static void AddStandardName(string s)
{
uint hash = HashFilename(s);
uint hash = HashFilename(s); // RA1 and TD
Names.Add(hash, s);
uint crcHash = CrcHashFilename(s); // TS
Names.Add(crcHash, s);
}
public const int Size = 12;