view contrib/python-hook-examples.py @ 22617:1625770c2ce1

push: use `exchange.push` in `commands.push`

To gain access to all results from the push, we need to have access to the
`pushoperation` object. We call `exchange.push` to do so.

It is impossible to just change the `localrepo.push` signature because the
change may be too subtle to be caught by external extension wrapping
`localrepo.push`.

This mean we'll have to kill `localrepo.push` because just using
`exchange.push` in `commands.py` would silently disable all wrapping around
`localrepo.push` by third-party extensions. So we'll remove it in a later
changeset to get such extensions to fail noisily.

'''
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)))