view contrib/python-hook-examples.py @ 22193:efc591e8b35c

largefiles: put whole "hgupdaterepo" process into the same "wlock" scope

Before this patch, there are two distinct "wlock" scopes below in
"hgupdaterepo":

  1. "merge.update" via original "hg.updaterepo" function
  2. "updatelfiles" specific "wlock" scope (to synchronize largefile
     dirstate)

In addition to them, "dirstate.walk" is executed between these "wlock"
scopes.

But these should be executed in the same "wlock" scope for
consistency, because many (indirect) users of "hg.updaterepo" don't
get "wlock" explicitly before invocation of it.

"hg.clean" is invoked without "wlock" from:

  - mqrepo.restore in mq
  - bisect in commands
  - update in commands

"hg.update" is invoked without "wlock" from:

  - clone in mq
  - pullrebase in rebase
  - postincoming in commands (used in "hg pull -u", "hg unbundle")
  - update in commands

This patch puts almost all original "hgupdaterepo" implementation into
"_hgupdaterepo" to reduce changes.

'''
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)))