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[Symbian Installation File] Add support for Symbian OS >= 6 compressed files.

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This commit is contained in:
Natalia Portillo
2023-10-08 16:49:43 +01:00
parent a5dd499ba6
commit 0389696163
1 changed files with 18 additions and 7 deletions
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25
Aaru.Archives/Symbian/Files.cs
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@@ -31,6 +31,8 @@
// ****************************************************************************/
using System;
using System.IO;
using System.IO.Compression;
using Aaru.CommonTypes.Enums;
using Aaru.CommonTypes.Interfaces;
using Aaru.CommonTypes.Structs;
@@ -159,19 +161,28 @@ public sealed partial class Symbian
if(entryNumber < 0 || entryNumber >= _files.Count)
return ErrorNumber.OutOfRange;
// TODO: Implement
if(_compressed)
return ErrorNumber.NotSupported;
Stream stream = new OffsetStream(new NonClosableStream(_stream), _files[entryNumber].pointer,
_files[entryNumber].pointer + _files[entryNumber].length);
ErrorNumber errno;
if(_compressed)
{
if(_files[entryNumber].originalLength == 0)
stream = new MemoryStream(Array.Empty<byte>());
else
{
stream = new ForcedSeekStream<ZLibStream>(_files[entryNumber].originalLength, stream,
CompressionMode.Decompress);
}
}
var offsetStream = new OffsetStream(new NonClosableStream(_stream), _files[entryNumber].pointer,
_files[entryNumber].pointer + _files[entryNumber].length);
filter = new ZZZNoFilter();
ErrorNumber errno = filter.Open(offsetStream);
errno = filter.Open(stream);
if(errno == ErrorNumber.NoError)
return ErrorNumber.NoError;
offsetStream.Close();
stream.Close();
return errno;
}