view contrib/python-hook-examples.py @ 26399:1f0e78f8f55f

bundlerepo: let bundle repo look in the _mancache

When looking up a base revision, we were ignoring the contents that were already
available in the manifest's _mancache. This patch allows us to use that data
instead of reading from the revlog.

This is useful in our pushrebase extension (which allows rebasing on the server
side during a push) because it allows us to prefetch the bundle base manifest
before aquiring the repo lock (1 second saving), which means doing less work inside the lock,
which means a 20% higher commit rate.

'''
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)))