view contrib/python-hook-examples.py @ 12937:6ff784de7c3a stable

util: refactor opener

- Don't call atomictempfile or nlinks() if the path is malformed
  (no basename). Let posixfile() raise IOError directly.
- atomictempfile already breaks up hardlinks, no need to poke
  at the file with nlinks() if atomictemp.
- No need to copy the file contents to break hardlinks for 'w'rite
  modes (w, wb, w+, w+b). Unlinking and recreating the file is faster.

'''
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].parents()[0].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)))