SabreTools/SabreTools.Compression
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Fix LZ decompression issue

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This commit is contained in:
Matt Nadareski
2024-12-11 03:26:57 -05:00
parent 5a8da26e48
commit f7b800acd9
1 changed files with 30 additions and 22 deletions
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52
SabreTools.Compression/LZ/Decompressor.cs
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@@ -524,34 +524,42 @@ namespace SabreTools.Compression.LZ
/// <returns>Filled file header on success, null on error</returns>
private FileHeaader? ParseFileHeader(Stream data, out LZERROR error)
{
error = LZERROR.LZERROR_OK;
var fileHeader = new FileHeaader();
var magic = data.ReadBytes(LZ_MAGIC_LEN);
if (magic == null)
try
{
error = LZERROR.LZERROR_BADINHANDLE;
return null;
}
error = LZERROR.LZERROR_OK;
var fileHeader = new FileHeaader();
fileHeader.Magic = Encoding.ASCII.GetString(magic);
if (fileHeader.Magic != MagicString)
var magic = data.ReadBytes(LZ_MAGIC_LEN);
if (magic == null)
{
error = LZERROR.LZERROR_BADINHANDLE;
return null;
}
fileHeader.Magic = Encoding.ASCII.GetString(magic);
if (fileHeader.Magic != MagicString)
{
error = LZERROR.LZERROR_NOT_LZ;
return null;
}
fileHeader.CompressionType = data.ReadByteValue();
if (fileHeader.CompressionType != (byte)'A')
{
error = LZERROR.LZERROR_UNKNOWNALG;
return null;
}
fileHeader.LastChar = (char)data.ReadByteValue();
fileHeader.RealLength = data.ReadUInt32();
return fileHeader;
}
catch
{
error = LZERROR.LZERROR_NOT_LZ;
return null;
}
fileHeader.CompressionType = data.ReadByteValue();
if (fileHeader.CompressionType != (byte)'A')
{
error = LZERROR.LZERROR_UNKNOWNALG;
return null;
}
fileHeader.LastChar = (char)data.ReadByteValue();
fileHeader.RealLength = data.ReadUInt32();
return fileHeader;
}
#endregion