import os

from mercurial import hg, ui, merge

u = ui.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.write('%s\n' % name)

    f.close()

    repo.add([name])

    commit(name, time)

def update(rev):

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

def merge_(rev):

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

    print '\nAncestors of 6 and 5'

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

        print r,

    print '\nAncestors of 5 and 4'

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

        print r,

    # Descendants

    print '\n\nDescendants of 5'

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

        print r,

    print '\nDescendants of 5 and 3'

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

        print r,

    print '\nDescendants of 5 and 4'

    for r in repo.changelog.descendants(5, 4):

        print r,