view contrib/python-hook-examples.py @ 31082:abb92b3d370e

hgweb: explictly pass basectx in webutil.diffs

There's only one case where `basectx` parameter is None (over two usages), so
it's probably not worth handling the special case as it makes code-reading
harder.

Along the way, use ctx.p1() instead of checking for ctx.parents() being empty
which should not occur.

'''
Examples of useful python hooks for Mercurial.
'''
from __future__ import absolute_import
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)))