changelog.py

#! /usr/bin/env python
import os
import re
import git

categories = (
    ( 'User utilities', lambda x: x.startswith("bin/"), 1 ),
    ( 'User utilities', lambda x: x.startswith("usr.bin/"), 1 ),
    ( 'Kernel', lambda x: x.startswith("sys/"), 1 ),
    ( 'Filesystems', lambda x: x.startswith("sys/vfs"), 2 ),
    ( 'Devices', lambda x: x.startswith("sys/dev/"), 2 ),
    ( 'Networking', lambda x: x.startswith("sys/netinet/"), 2 ),
    ( 'System utilities', lambda x: x.startswith("sbin/"), 1 ),
    ( 'System utilities', lambda x: x.startswith("libexec/"), 1 ),
    ( 'System utilities', lambda x: x.startswith("usr.sbin/"), 1 ),
    ( 'Contributed software', lambda x: x.startswith("contrib/"), 1 ),
    ( 'Cryptography', lambda x: x.startswith("crypto/"), 1 ),
    ( 'Documentation', lambda x: x.startswith("doc/"), 1 ),
    ( 'System configuration files and scripts', lambda x: x.startswith("etc/"), 1 ),
    ( 'System configuration files and scripts', lambda x: x.startswith("share/"), 1 ),
    ( 'Manual pages', lambda x: x.startswith("share/man/"), 2 ),
    ( 'Games', lambda x: x.startswith("games/"), 1 ),
    ( 'GNU', lambda x: x.startswith("gnu/"), 1 ),
    ( 'Libraries', lambda x: x.startswith("lib/"), 1 ),
    ( 'nrelease', lambda x: x.startswith("nrelease/"), 1 ),
    ( 'Tools', lambda x: x.startswith("tools/"), 1 ),
    ( 'Tools', lambda x: x.startswith("test/"), 1 )
)

changelog = dict()

previous = 'origin/DragonFly_RELEASE_4_6'
current = 'origin/DragonFly_RELEASE_4_8'

def check_weight(key1, key2):
    for key, func, weight in categories:
        if key == key1:
            w1 = categories[2]
        if key == key2:
            w2 = categories[2]

    if w1 >= w2:
        return key1
    elif w2 > w1:
        return key2
            
#
# Set a commit in a specific category and add it to the
# changelog dictionary
#
def parse_commit(commit):
    catg = dict()
    maxvalue = -1
    maxcatg = 'other'

    assert commit.message != ''

    for elem in commit.stats.files:
        for key, func, weight in categories:
            if func(elem):
                if not key in catg:
                    catg[key] = 0
                catg[key] += 1

    for key in catg:
        if catg[key] > maxvalue:
            maxvalue = catg[key]
            maxcatg = key
        elif catg[key] == maxvalue:
            maxcatg = check_weight(key, maxcatg)

    return maxcatg
# --------------------------
if __name__ == '__main__':
    repo = git.Repo('/home/antonioh/s/dragonfly')

    for commit in repo.iter_commits('%s..%s' %(previous, current)):
        catg = parse_commit(commit)
        if not catg in changelog:
            changelog[catg] = dict()
        changelog[catg].update({ commit.hexsha: commit.message.splitlines()[0] })

    # Produce output in Markdown syntax
    print '## Changelog: From', previous, 'to', current
    for category in sorted(changelog):
        print '###', category
        for commitid, cmsg in changelog[category].iteritems():
            print '* [[' + commitid + '|https://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/' + commitid + ']] -', cmsg