mercurial/pushkey.py

patch: generalize the use of patchmeta in applydiff()

- Add patchmeta.copy() and emit copies from iterhunks. Modifying patchmeta
  instances in applydiff() makes things simpler.
- Rename selectfile() into makepatchmeta(). It is responsible for creating
  patchmeta for regular patches.
- Pass patchmeta objects to patchfile() directly

patchmeta instances were associated with git patches, for regular patches we
had to pass additional variables to tell the patch intent to patchfile().
Instead, we generate patchmeta for regular patches and pass them. This will
also help with patch filtering by matcher objects.

# pushkey.py - dispatching for pushing and pulling keys
#
# Copyright 2010 Matt Mackall <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

import bookmarks

def _nslist(repo):
    n = {}
    for k in _namespaces:
        n[k] = ""
    return n

_namespaces = {"namespaces": (lambda *x: False, _nslist),
               "bookmarks": (bookmarks.pushbookmark, bookmarks.listbookmarks)}

def register(namespace, pushkey, listkeys):
    _namespaces[namespace] = (pushkey, listkeys)

def _get(namespace):
    return _namespaces.get(namespace, (lambda *x: False, lambda *x: {}))

def push(repo, namespace, key, old, new):
    '''should succeed iff value was old'''
    pk = _get(namespace)[0]
    return pk(repo, key, old, new)

def list(repo, namespace):
    '''return a dict'''
    lk = _get(namespace)[1]
    return lk(repo)