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adamselene · 11-12-2009, 01:46 PM

I reimplemented huff/cdic compression in Python, using a few tricks to speed it up. It runs about 25x faster than mobihuff.py on my machine.

While I was at it, I also:

* implemented support for uncompressed and Palmdoc-compressed .mobi files
* wrote a correct version of trailing data support
* avoided keeping the whole document in memory, massively reducing memory usage (~10MB vs ~183MB on my largest test file)

http://www.mit.edu/afs/user/m/y/mycroft/mobiunpack.py

PLEASE NOTE that this program is only for decompressing unencrypted Mobipocket files. It does not do anything with DRM.

11-12-2009, 01:46 PM	#332
adamselene Enthusiast Posts: 42 Karma: 11050 Join Date: Nov 2009 Device: Kindle Paperwhite, Kindle Touch, Kindle 2	I reimplemented huff/cdic compression in Python, using a few tricks to speed it up. It runs about 25x faster than mobihuff.py on my machine. While I was at it, I also: * implemented support for uncompressed and Palmdoc-compressed .mobi files * wrote a correct version of trailing data support * avoided keeping the whole document in memory, massively reducing memory usage (~10MB vs ~183MB on my largest test file) http://www.mit.edu/afs/user/m/y/mycroft/mobiunpack.py PLEASE NOTE that this program is only for decompressing unencrypted Mobipocket files. It does not do anything with DRM.