committags

   1 #!/usr/bin/python
   2 #
   3 # Generate a database of commits and major versions they went into.
   4 #
   5 # committags [git-args]
   6 #
   7 # This code is part of the LWN git data miner.
   8 #
   9 # Copyright 2007-8 LWN.net
  10 # Copyright 2007-8 Jonathan Corbet <corbet@lwn.net>
  11 #
  12 # This file may be distributed under the terms of the GNU General
  13 # Public License, version 2.
  14 #
  15 import sys
  16 import re
  17 import os
  18 import pickle
  19
  20 git = 'git log --decorate '
  21 if len(sys.argv) > 1:
  22     git += ' '.join(sys.argv[1:])
  23 input = os.popen(git, 'r')
  24
  25 DB = { }
  26 Tag = 'None'
  27
  28 tagline = re.compile(r'^commit ([\da-f]+) .*tag: (v2\.6\.\d\d)')
  29 commit = re.compile(r'^commit ([\da-f]+)')
  30
  31 for line in input.readlines():
  32     if not line.startswith('commit'):
  33         continue  # This makes it go faster
  34     m = tagline.search(line)
  35     if m:
  36         DB[m.group(1)] = Tag = m.group(2)
  37     else:
  38         m = commit.search(line)
  39         if m:
  40             DB[m.group(1)] = Tag
  41
  42 print 'Found %d commits' % (len(DB.keys()))
  43 out = open('committags.db', 'w')
  44 pickle.dump(DB, out)
  45 out.close()