Bug: 69061459

Clone this repo:
  1. 9dcf835 Fix the last temp file creation problem in unittest by Amin Hassani · 32 hours ago master
  2. 382db27 Set proper android temp directory by Amin Hassani · 4 days ago
  3. f4d6ce9 Fix unittest failure introduced in aosp/663042 by Amin Hassani · 8 days ago
  4. 2f8c632 Check deflate extents in PuffinStream by Amin Hassani · 9 days ago
  5. bc7af48 Prevent BsdiffStream from accepting a nullptr input sream by Amin Hassani · 10 days ago

Puffin

Source code for Puffin: A utility for deterministic DEFLATE recompression.

TODO(ahassani): Describe the directory structure and how-tos.

Glossary

  • Alphabet A value that occurs in the input stream. It can be either a literal:[0..255], and end of block sign [256], a length[257..285], or a distance [0..29].

  • Huffman code A variable length code representing the Huffman encoded of an alphabet. Huffman codes can be created uniquely using Huffman code length array.

  • Huffman code array An array which an array index identifies a Huffman code and the array element in that index represents the corresponding alphabet. Throughout the code, Huffman code arrays are identified by vectors with postfix hcodes_.

  • Huffman reverse code array An array which an array index identifies an alphabet and the array element in that index contains the Huffman code of the alphabet. Throughout the code, The Huffman reverse code arrays are identified by vectors with postfix rcodes_.

  • Huffman code length The number of bits in a Huffman code.

  • Huffman code length array An array of Huffman code lengths with the array index as the alphabet. Throughout the code, Huffman code length arrays are identified by vectors with postfix lens_.