view contrib/python-hook-examples.py @ 28234:2c29f157463e

destutil: remove redundant examination

Before this patch, "len(heads) != len(otherheads)" is examined to
detect whether message should be displayed or not.

But if "repo.revs('%ln and parents()', heads)", heads should contain
"parents()" and otherheads is always less than heads.

'''
Examples of useful python hooks for Mercurial.
'''
from mercurial import patch, util

def diffstat(ui, repo, **kwargs):
    '''Example usage:

    [hooks]
    commit.diffstat = python:/path/to/this/file.py:diffstat
    changegroup.diffstat = python:/path/to/this/file.py:diffstat
    '''
    if kwargs.get('parent2'):
        return
    node = kwargs['node']
    first = repo[node].p1().node()
    if 'url' in kwargs:
        last = repo['tip'].node()
    else:
        last = node
    diff = patch.diff(repo, first, last)
    ui.write(patch.diffstat(util.iterlines(diff)))