comparison mercurial/changegroup.py @ 45552:10284ce3d5ed

scmutil: introduce function to check whether repo uses treemanifest or not

In an upcoming patch, I wanted to check whether current repo uses treemanifest
or not.
I looked for a function and found that at all places we manually check for the
requirement in repo requirements. I guess having a dedicated function for that
is much better.

Differential Revision: https://phab.mercurial-scm.org/D8981

45551:4c8d9b53b1c7

    match as matchmod,
    mdiff,
    phases,
    pycompat,
    requirements,
    util,
)

from .interfaces import repository

        # cc0ff93d0c0c.

        # Treemanifests don't work correctly with fastpathlinkrev
        # either, because we don't discover which directory nodes to
        # send along with files. This could probably be fixed.
        fastpathlinkrev = fastpathlinkrev and (
            requirements.TREEMANIFEST_REQUIREMENT not in repo.requirements
        )

        fnodes = {}  # needed file nodes

        size = 0
        it = self.generatemanifests(

    versions = set(_packermap.keys())
    needv03 = False
    if (
        repo.ui.configbool(b'experimental', b'changegroup3')
        or repo.ui.configbool(b'experimental', b'treemanifest')
        or requirements.TREEMANIFEST_REQUIREMENT in repo.requirements
    ):
        # we keep version 03 because we need to to exchange treemanifest data
        #
        # we also keep vresion 01 and 02, because it is possible for repo to
        # contains both normal and tree manifest at the same time. so using

# Changegroup versions that can be created from the repo
def supportedoutgoingversions(repo):
    versions = allsupportedversions(repo)
    if requirements.TREEMANIFEST_REQUIREMENT in repo.requirements:
        # Versions 01 and 02 support only flat manifests and it's just too
        # expensive to convert between the flat manifest and tree manifest on
        # the fly. Since tree manifests are hashed differently, all of history
        # would have to be converted. Instead, we simply don't even pretend to
        # support versions 01 and 02.

45552:10284ce3d5ed

    match as matchmod,
    mdiff,
    phases,
    pycompat,
    requirements,
    scmutil,
    util,
)

from .interfaces import repository

        # cc0ff93d0c0c.

        # Treemanifests don't work correctly with fastpathlinkrev
        # either, because we don't discover which directory nodes to
        # send along with files. This could probably be fixed.
        fastpathlinkrev = fastpathlinkrev and not scmutil.istreemanifest(repo)

        fnodes = {}  # needed file nodes

        size = 0
        it = self.generatemanifests(

    versions = set(_packermap.keys())
    needv03 = False
    if (
        repo.ui.configbool(b'experimental', b'changegroup3')
        or repo.ui.configbool(b'experimental', b'treemanifest')
        or scmutil.istreemanifest(repo)
    ):
        # we keep version 03 because we need to to exchange treemanifest data
        #
        # we also keep vresion 01 and 02, because it is possible for repo to
        # contains both normal and tree manifest at the same time. so using

# Changegroup versions that can be created from the repo
def supportedoutgoingversions(repo):
    versions = allsupportedversions(repo)
    if scmutil.istreemanifest(repo):
        # Versions 01 and 02 support only flat manifests and it's just too
        # expensive to convert between the flat manifest and tree manifest on
        # the fly. Since tree manifests are hashed differently, all of history
        # would have to be converted. Instead, we simply don't even pretend to
        # support versions 01 and 02.