view contrib/python-hook-examples.py @ 26364:6e9c2aab9925

dispatch: don't stack trace on commands like `hg .log`

This used to stack trace because it raised a util.Abort which wasn't
handled in this block. We now handle it. Additionally, we error out
earlier instead of plodding on and showing the "log" entry of the
plain `hg help` output.

'''
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)))