#1
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1.9 GB compresed to 67 kB!!!???
it's real.
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here the info of the packer from the dev Quote:
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#2
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He did not say that UPX was modified; he said that The Product changed the order in which it saved its internal data so that it took better advantage of the way UPX dictionaried that data: "reordering data in a way that pleases the packer saved the day more than once".
Read up on LZW and LZX compression and you will better understand what they are talking about. Also, if you read the specifics of The Product, they did not compress 1.9 GBs of raw data, they compressed code that generated 1.9 GBs of data. Last edited by Satyric0n; 10-23-2003 at 21:58. |
#3
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right
hehhe.That's what i mean.where i can get document about lzw and lzx compresion?.And can you give sample app?
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#4
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There are many different compression formats based on LZW and/or LZX; it really depends on what language you are used to working in as to what links you are going to find helpful. If you are a Java programmer, you may find the open source implementation of ZLib to be useful. If you are a Windows C++ programmer (proficient in C++ and COM), you will find the sourcecode for 7Zip to be useful. If you are a .NET developer, you will find the sourcecode for SharpZipLib to be useful.
Most compression formats (ZIP, RAR, CAB, ACE, 7Z, etc.) use a combination of Huffman trees and LZW/LZX-based dictionaries. Either way, you will find that Google (or the search engine for your forum of choice) is always your best friend . There are too many resources available to list them all here. |
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