annotate contrib/python-hook-examples.py @ 17289:f2d6b4f8e78c stable

hgweb: avoid traceback when file or node parameters are missing

Previously, browsing to http://serv/diff would generate an internal
server error due to the file and node parameters being missing.
The same error also occurred for filelog, comparison and annotate.

'''
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)))