#! /usr/bin/env python
# vim: set fileencoding=utf-8 :

import locale
import os

locale.setlocale(locale.LC_ALL, 'en_US.UTF-8')

author = 'Uwe Kleine-König'
author_email = 'ukleinek@informatik.uni-freiburg.de'

script_sort = r"""#! /usr/bin/env python

import locale
import re
import sys
import tempfile

locale.setlocale(locale.LC_ALL, 'en_US.UTF-8')

re_start = re.compile('P:')
re_topic = re.compile('[0-9a-zA-Z][^:]')
# F is undefined but used
re_field = re.compile('[PMLWTSF]:')
re_empty = re.compile('\s*$')

prologue = True
current_topic = None
topic = dict()
fixed_maintainers = tempfile.TemporaryFile()

for line in open('MAINTAINERS'):
    if prologue:
        print >> fixed_maintainers, line,
        mo = re_start.match(line)
        if mo:
            prologue = False

        continue

    mo = re_topic.match(line)
    if mo:
        current_topic = line
        if topic.has_key(current_topic):
            sys.exit(1)
        topic[current_topic] = list()
        continue

    elif current_topic is None:
        # rest of prologue
        print >> fixed_maintainers, line,

        continue

    assert not current_topic is None

    mo = re_field.match(line)
    if mo:
        topic[current_topic].append(line)

    else:
        mo = re_empty.match(line)
        if not mo:
            print >> sys.stderr, 'tralala', current_topic, repr(line)
            sys.exit(1)

first = True

the_rest = 'THE REST\n'
have_the_rest = False

# sort case insensitive
for t, body in sorted(topic.iteritems(), key=lambda i: i[0].upper()):
    if t == the_rest:
        have_the_rest = True
        continue

    if first:
        first = False
    else:
        print >> fixed_maintainers

    print >> fixed_maintainers, t,
    for line in body:
        print >> fixed_maintainers, line,

if have_the_rest:
    print >> fixed_maintainers

    print >> fixed_maintainers, the_rest,
    for line in topic[the_rest]:
        print >> fixed_maintainers, line,

fixed_maintainers.seek(0)

maintainers = open('MAINTAINERS', 'w')
for line in fixed_maintainers:
    print >> maintainers, line,
"""

script_mergePM = r"""#! /usr/bin/env python

import locale
import re
import sys
import tempfile

locale.setlocale(locale.LC_ALL, 'en_US.UTF-8')

re_person = re.compile('P:(\s*)(.*)')
re_mail = re.compile('M:\s*(.*)')

fixed_maintainers = tempfile.TemporaryFile()

current_person = None
current_person_used = False

for lineno, line in enumerate(open('MAINTAINERS')):
    mo = re_person.match(line)
    if mo:
        if current_person and not current_person_used:
            print >> fixed_maintainers, 'P:%s%s' % (current_person_intend, current_person)

        current_person = mo.group(2)
        current_person_intend = mo.group(1)
        current_person_used = False
        continue

    mo = re_mail.match(line)
    if mo:
        if current_person is None:
            print 'mail without person at line %d' % (lineno + 1)
            sys.exit(1)

        mail = mo.group(1)

        if mail == 'Mail patches to':
            mail = 'p.e@rs.on'

        print >> fixed_maintainers, 'P:%s%s <%s>' % (current_person_intend, current_person, mail)
        current_person_used = True

    else:
        if current_person and not current_person_used:
            # either there is no mail address or the entry is already correct
            print >> fixed_maintainers, 'P:%s%s' % (current_person_intend, current_person)

        current_person = None
        print >> fixed_maintainers, line,

fixed_maintainers.seek(0)

maintainers = open('MAINTAINERS', 'w')
for line in fixed_maintainers:
    print >> maintainers, line,
"""

def tabintend(s):
    lines = s.split('\n')
    indented_lines = ('\t%s' % l for l in lines)
    return '\n'.join(indented_lines)

intended_script_sort = tabintend(script_sort)
intended_script_mergePM = tabintend(script_mergePM)

exec script_sort in dict(globals())

os.system('git commit --author="%(author)s <%(author_email)s>" -a -m "MAINTAINERS: fix alphabetic ordering\n\nThis change was done using the following Python script:\n\n%(intended_script_sort)s\n\nSigned-off-by: %(author)s <%(author_email)s>\n"' % locals())

exec script_mergePM in dict(globals())

os.system('git commit --author="%(author)s <%(author_email)s>" -a -m "MAINTAINERS: merge P and M fields to ease copy\'n\'paste\n\nThis was suggested by Sam Ravnborg and done using the following\nPython script:\n\n%(intended_script_mergePM)s\n\nSigned-off-by: %(author)s <%(author_email)s>\n"' % locals())