comparison mercurial/scmutil.py @ 45072:a56ba57c837d

scmutil: allowing different files to be prefetched per revision

The old API takes a list of revision separate from the file matcher, and thus
provides no way to fetch different sets of files from each revision. In
preparation for adding one such usage, I'm changing the API to take a list of
(revision, file matcher) tuples instead.

Differential Revision: https://phab.mercurial-scm.org/D8721

45071:196ba4d4eb86

    b'pull',
    b'unbundle',
]


def prefetchfiles(repo, revs, match):
    """Invokes the registered file prefetch functions, allowing extensions to
    ensure the corresponding files are available locally, before the command
    uses them."""
    if match:
        # The command itself will complain about files that don't exist, so
        # don't duplicate the message.
        match = matchmod.badmatch(match, lambda fn, msg: None)
    else:
        match = matchall(repo)

    fileprefetchhooks(repo, revs, match)


# a list of (repo, revs, match) prefetch functions
fileprefetchhooks = util.hooks()

45072:a56ba57c837d

    b'pull',
    b'unbundle',
]


def prefetchfiles(repo, revmatches):
    """Invokes the registered file prefetch functions, allowing extensions to
    ensure the corresponding files are available locally, before the command
    uses them.

    Args:
      revmatches: a list of (revision, match) tuples to indicate the files to
      fetch at each revision. If any of the match elements is None, it matches
      all files.
    """

    def _matcher(m):
        if m:
            assert isinstance(m, matchmod.basematcher)
            # The command itself will complain about files that don't exist, so
            # don't duplicate the message.
            return matchmod.badmatch(m, lambda fn, msg: None)
        else:
            return matchall(repo)

    revbadmatches = [(rev, _matcher(match)) for (rev, match) in revmatches]

    fileprefetchhooks(repo, revbadmatches)


# a list of (repo, revs, match) prefetch functions
fileprefetchhooks = util.hooks()