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Forum Index : Microcontroller and PC projects : CMM2: LZ77 file compression/decompression
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epsilon Senior Member  Joined: 30/07/2020 Location: BelgiumPosts: 255 |
Hi all, Attached is a file compression and decompression program for CMM2, and a matching Python implementation to run on a host machine. The code is a straightforward port from Rich Geldreich's C implementation which can be found here: https://gist.github.com/fogus/5401265 Usage: - On CMM2: *lz1 e <file> : encodes <file> into <file>.lz1 *lz1 d <file>.lz1 : decodes <file>.lz1 to <file> - On Host: python lz1 e <file> : encodes <file> into <file>.lz1 python lz1 d <file>.lz1 : decodes <file>.lz1 to <file> I plan to include this as an option to MAR, Maximite Archiving Tool (https://github.com/epsilon537/mar_cmm2 ). Any similarity to tar is entirely coincidental.  Cheers, Epsilon. README.md: LZ1 LZ77 encoder/decoder ------------------------ Authors ------- Original C implementation by Rich Geldreich. MMBasic and Python ports by Epsilon. Current Version --------------- 0.1 ChangeLog --------- 0.1: Initial version. Description ----------- lz1 performs LZ77 compression/decompression of a given input file. Two compatible versions exist: lz1.bas for CMM2 and lz1.py for a Windows/MacOSX/Linux host. The source code for the original C implementation can be found here: https://gist.github.com/fogus/5401265 Usage ----- CMM2: *lz1 e <file> : encodes <file> into <file>.lz1 *lz1 d <file>.lz1 : decodes <file>.lz1 to <file> Host: python lz1 e <file> : encodes <file> into <file>.lz1 python lz1 d <file>.lz1 : decodes <file>.lz1 to <file> Required CMM2 firmware version ------------------------------ V5.06.00 Required Python version ----------------------- 3.x GitHub ------ https://github.com/epsilon537/lz1_cmm2 lz1.zip Epsilon CMM2 projects |
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Plasmamac Guru  Joined: 31/01/2019 Location: GermanyPosts: 595 |
cool ! thx Plasma |
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