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C#: Nitro-formats will now also try to decompress files with a plaintext size of more than 0x180000. However the Supports method will first try to partially decompress the file.

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barubary 2011-11-23 10:35:29 +00:00
parent a30a7ac3e3
commit 6dc34d20a6
1 changed files with 20 additions and 1 deletions
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21
CSharp/DSDecmp/Formats/Nitro/NitroCFormat.cs
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@ -18,6 +18,8 @@ namespace DSDecmp.Formats.Nitro
/// <summary>
/// The maximum allowed size of the decompressed file (plaintext size) allowed for Nitro
/// Decompressors. Only used when SkipLargePlaintexts = true.
/// If the expected plaintext size is larger that this, the 'Supports' method will partially
/// decompress the data to check if the file is OK.
/// </summary>
public static int MaxPlaintextSize = 0x180000;
@ -59,7 +61,24 @@ namespace DSDecmp.Formats.Nitro
stream.Read(sizeBytes, 0, 4);
outSize = (int)IOUtils.ToNDSu32(sizeBytes, 0);
}
return outSize <= MaxPlaintextSize;
if (outSize <= MaxPlaintextSize)
return true;
try
{
stream.Position = startPosition;
this.Decompress(stream, Math.Min(Math.Min(inLength, 0x80000), MaxPlaintextSize), new System.IO.MemoryStream());
// we expect a NotEnoughDataException, since we're giving the decompressor only part of the file.
return false;
}
catch (NotEnoughDataException)
{
return true;
}
catch (Exception)
{
return false;
}
}
finally
{