hgext/remotefilelog/constants.py

copies: move short-circuiting of dirstate copies out of _forwardcopies()

I'd like to move the filtering of copies we do after chaining to the
end of all chaining (in a single place in pathcopies()). One problem
that came up when trying that was that we allow things like `hg cp -f
<file> <existing file>` so the user can later amend that in. Filtering
at the end would mean that we remove those copies. That would break
`hg st -C`. This patch therefore moves the short-circuiting of
dirstate copies into pathcopies() so we can more easily handle the
dirstate-only case differently.

I initially thought this might change some behavior when the user does
`hg status --rev 'wdir()' --rev .` during an uncommitted merge, since
_backwardrenames() would reverse the copies in that case. However, I
couldn't come up with a test case where it made a difference.

Differential Revision: https://phab.mercurial-scm.org/D6600

from __future__ import absolute_import

import struct

from mercurial.i18n import _

NETWORK_CAP_LEGACY_SSH_GETFILES = 'exp-remotefilelog-ssh-getfiles-1'

SHALLOWREPO_REQUIREMENT = "exp-remotefilelog-repo-req-1"

BUNDLE2_CAPABLITY = "exp-remotefilelog-b2cap-1"

FILENAMESTRUCT = '!H'
FILENAMESIZE = struct.calcsize(FILENAMESTRUCT)

NODESIZE = 20
PACKREQUESTCOUNTSTRUCT = '!I'

NODECOUNTSTRUCT = '!I'
NODECOUNTSIZE = struct.calcsize(NODECOUNTSTRUCT)

PATHCOUNTSTRUCT = '!I'
PATHCOUNTSIZE = struct.calcsize(PATHCOUNTSTRUCT)

FILEPACK_CATEGORY=""
TREEPACK_CATEGORY="manifests"

ALL_CATEGORIES = [FILEPACK_CATEGORY, TREEPACK_CATEGORY]

# revision metadata keys. must be a single character.
METAKEYFLAG = 'f'  # revlog flag
METAKEYSIZE = 's'  # full rawtext size

def getunits(category):
    if category == FILEPACK_CATEGORY:
        return _("files")
    if category == TREEPACK_CATEGORY:
        return _("trees")

# Repack options passed to ``markledger``.
OPTION_PACKSONLY = 'packsonly'