mirror of
https://github.com/facebook/sapling.git
synced 2024-10-07 15:27:13 +03:00
9dc21f8d0b
Summary: D13853115 adds `edenscm/` to `sys.path` and code still uses `import mercurial`. That has nasty problems if both `import mercurial` and `import edenscm.mercurial` are used, because Python would think `mercurial.foo` and `edenscm.mercurial.foo` are different modules so code like `try: ... except mercurial.error.Foo: ...`, or `isinstance(x, mercurial.foo.Bar)` would fail to handle the `edenscm.mercurial` version. There are also some module-level states (ex. `extensions._extensions`) that would cause trouble if they have multiple versions in a single process. Change imports to use the `edenscm` so ideally the `mercurial` is no longer imported at all. Add checks in extensions.py to catch unexpected extensions importing modules from the old (wrong) locations when running tests. Reviewed By: phillco Differential Revision: D13868981 fbshipit-source-id: f4e2513766957fd81d85407994f7521a08e4de48
110 lines
3.2 KiB
Python
110 lines
3.2 KiB
Python
# gitrevset.py
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#
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# Copyright 2014 Facebook, Inc.
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"""map a git hash to a Mercurial hash:
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$ hg log -r "gitnode($HASH)"
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$ hg id -r "gitnode($HASH)"
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short version:
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$ hg log -r "g$HASH"
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$ hg id -r "g$HASH"
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"""
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from __future__ import absolute_import
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import re
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from edenscm.mercurial import error, extensions, hg, namespaces, registrar, revset
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from edenscm.mercurial.i18n import _
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namespacepredicate = registrar.namespacepredicate()
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revsetpredicate = registrar.revsetpredicate()
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githashre = re.compile("g([0-9a-fA-F]{40})")
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templatekeyword = registrar.templatekeyword()
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@templatekeyword("gitnode")
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def showgitnode(repo, ctx, templ, **args):
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"""Return the git revision corresponding to a given hg rev"""
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binnode = _lookup_node(repo, ctx.hex(), from_scm_type="hg")
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# templates are expected to return an empty string when no
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# data exists
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return binnode.encode("hex") if binnode else ""
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@revsetpredicate("gitnode(id)")
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def gitnode(repo, subset, x):
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"""``gitnode(id)``
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Return the hg revision corresponding to a given git rev."""
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l = revset.getargs(x, 1, 1, _("id requires one argument"))
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n = revset.getstring(l[0], _("id requires a string"))
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hexhgnode = _lookup_node(repo, n, from_scm_type="git")
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if not hexhgnode:
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raise error.RepoLookupError(_("unknown revision '%s'") % n)
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rev = repo[hexhgnode].rev()
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return subset.filter(lambda r: r == rev)
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def _lookup_node(repo, hexnode, from_scm_type):
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gitlookupnode = "_gitlookup_%s_%s" % (from_scm_type, hexnode)
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# ui.expandpath('default') returns 'default' if there is no default
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# path. This can be the case when command is ran on the server.
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# In that case let's run lookup() command locally.
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try:
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result = repo.lookup(gitlookupnode)
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except error.RepoLookupError:
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# Note: RepoLookupError is caught here because repo.lookup()
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# can throw only this exception.
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peerpath = repo.ui.expandpath("default")
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# sshing can cause junk 'remote: ...' output to stdout, so we need to
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# redirect it temporarily so automation can parse the result easily.
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oldfout = repo.ui.fout
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try:
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repo.baseui.fout = repo.ui.ferr
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remoterepo = hg.peer(repo, {}, peerpath)
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result = remoterepo.lookup(gitlookupnode)
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except error.RepoError:
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# Note: RepoError can be thrown by hg.peer(), RepoLookupError
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# can be thrown by remoterepo.lookup(). RepoLookupError is a
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# subclass of RepoError so catching just error.RepoError is enough.
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return None
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finally:
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repo.baseui.fout = oldfout
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# Sanity check - result must be 20 chars
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if len(result) != 20:
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return None
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else:
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return result
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@namespacepredicate("gitrev", priority=75)
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def _getnamespace(_repo):
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return namespaces.namespace(
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listnames=lambda repo: [], namemap=_gitlookup, nodemap=lambda repo, node: []
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)
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def _gitlookup(repo, gitrev):
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cl = repo.changelog
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tonode = cl.node
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def _gittohg(githash):
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return [tonode(rev) for rev in repo.revs("gitnode(%s)" % githash)]
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m = githashre.match(gitrev)
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if m is not None:
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return _gittohg(m.group(1))
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else:
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return []
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