zarak / Hit

Hit

Building git in Haskell.

Test zlib compression

$ cat git-simple-commit/.git/objects/ce/013625030ba8dba906f756967f9e9ca394464a | cabal run inflate
blob 6hello

$ cat git-simple-commit/.git/objects/ce/013625030ba8dba906f756967f9e9ca394464a | cabal run inflate | wc -c
13

View hexdump of a blob

There is a null byte between the length header and the blob content.

$ cat git-simple-commit/.git/objects/ce/013625030ba8dba906f756967f9e9ca394464a | cabal run inflate | hexdump -C
# non-ascii chars are displayed as .
00000000  62 6c 6f 62 20 36 00 68  65 6c 6c 6f 0a           |blob 6.hello.|
0000000d # total size of file

View hexdump of a tree

$ cat git-simple-commit/.git/objects/88/e38705fdbd3608cddbe904b67c731f3234c45b | cabal run inflate | hexdump -C
# Store a tree as: string of mode, space, filename, null, and id as binary
00000000  74 72 65 65 20 37 34 00  31 30 30 36 34 34 20 68  |tree 74.100644 h| # length is 74
00000010  65 6c 6c 6f 2e 74 78 74  00 ce 01 36 25 03 0b a8  |ello.txt...6%...|
00000020  db a9 06 f7 56 96 7f 9e  9c a3 94 46 4a 31 30 30  |....V......FJ100| # 100644 is filemode
00000030  36 34 34 20 77 6f 72 6c  64 2e 74 78 74 00 cc 62  |644 world.txt..b|
00000040  8c cd 10 74 2b ae a8 24  1c 59 24 df 99 2b 5c 01  |...t+..$.Y$..+\.|
00000050  9f 71                                             |.q|
00000052 # total size of file