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krammer_huffman_encoder's Introduction

Krammer

A toy implementation of Huffman encoding. It crams content of input file into a compressed output file.

Build and Install

make
make install

Run

To compress a file run the following command:

krammer encode -in sample_input/hackernews.html.txt -out sample_compressed/hackernews.html.krm

To decode the file run:

krammer decode -in sample_compressed/hackernews.html.krm -out sample_decompressed/hackernews.html.txt

Under the hood

Compressed files *.krm stores the content in the following format:

#chars|HashTable|||binary_content

The hashtable is pipe-separated key value store.

Example:

33518|;1011|>11101|a101 ... |z110010010001|||O.d4g.Gs&I.$I.Y ...

Output

File Original Size Compressed Size Reduction Percentage
hackernews.html 34KB 22KB 35.3 %
newstest2013.en 333KB 190KB 42.9%
enOST_sample.txt 9.2MB 5.3MB 42.4%

krammer_huffman_encoder's People

Contributors

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Watchers

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