from __future__ import absolute_import, print_function

import os

from mercurial import (

    hg,

    merge,

    ui as uimod,

)

u = uimod.ui()

repo = hg.repository(u, 'test1', create=1)

os.chdir('test1')

def commit(text, time):

    repo.commit(text=text, date="%d 0" % time)

def addcommit(name, time):

    f = open(name, 'w')

    f.write('%s\n' % name)

    f.close()

    repo[None].add([name])

    commit(name, time)

def update(rev):

    merge.update(repo, rev, False, True)

def merge_(rev):

    merge.update(repo, rev, True, False)

if __name__ == '__main__':

    addcommit("A", 0)

    addcommit("B", 1)

    update(0)

    addcommit("C", 2)

    merge_(1)

    commit("D", 3)

    update(2)

    addcommit("E", 4)

    addcommit("F", 5)

    update(3)

    addcommit("G", 6)

    merge_(5)

    commit("H", 7)

    update(5)

    addcommit("I", 8)

    # Ancestors

    print('Ancestors of 5')

    for r in repo.changelog.ancestors([5]):

        print(r, end=' ')

    print('\nAncestors of 6 and 5')

    for r in repo.changelog.ancestors([6, 5]):

        print(r, end=' ')

    print('\nAncestors of 5 and 4')

    for r in repo.changelog.ancestors([5, 4]):

        print(r, end=' ')

    print('\nAncestors of 7, stop at 6')

    for r in repo.changelog.ancestors([7], 6):

        print(r, end=' ')

    print('\nAncestors of 7, including revs')

    for r in repo.changelog.ancestors([7], inclusive=True):

        print(r, end=' ')

    print('\nAncestors of 7, 5 and 3, including revs')

    for r in repo.changelog.ancestors([7, 5, 3], inclusive=True):

        print(r, end=' ')

    # Descendants

    print('\n\nDescendants of 5')

    for r in repo.changelog.descendants([5]):

        print(r, end=' ')

    print('\nDescendants of 5 and 3')

    for r in repo.changelog.descendants([5, 3]):

        print(r, end=' ')

    print('\nDescendants of 5 and 4')

    print(*repo.changelog.descendants([5, 4]), sep=' ')