help: decompression of file LZ77
- From: "Lorenzo" <lorenzo@xxxxxxxxxxx>
- Date: Wed, 31 Aug 2005 14:49:07 +0200
Hi Compression-Gurus,
I need to decompress files that were compressed with an unknown compression
algorithm ( a special form of LZ77). Is there a way to reverse engineer the
algorithm to be able to decompress the files and even to recompress it
afterwards ?
Here a some results of the algorithm:
067 067 067 067 067 032 000 000 000 221 000
is returned for a string composed by 1024 asc 67 (C) string.
067 067 067 067 067 032 000 000 000 000 000 000 000 225 000
is returned for a string composed by 2048 asc 67 string.
067 067 067 067 067 032 000 000 000 000 000 000 000 000 000 000 000 229 000
is returned for a string composed by 4096 asc 67 string
Other information:
The files will never be smaller than 1KB and never bigger than 512KB, but I
will need to process a very large number of them. So performance is
critical.
Thanks in advance for any hints that could help me find a solution.
If there some idiocies in this post, please don't kill me... I'm totally
ignorant at this stage about compression algorithms.
Lorenzo
.
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