sapling/hgext/gitrevset.py
Kostia Balytskyi 0e4d95b67e fb-hgext: fix gendoc-related issues
Summary:
These fixes are related to documentation-related check-style tests.

Depends on D6675344

Test Plan: - more tests pass

Reviewers: #sourcecontrol

Differential Revision: https://phabricator.intern.facebook.com/D6675351
2018-01-09 03:44:33 -08:00

94 lines
3.0 KiB
Python

# gitrevset.py
#
# Copyright 2014 Facebook, Inc.
"""map a git hash to a Mercurial hash:
$ hg log -r "gitnode($HASH)"
$ hg id -r "gitnode($HASH)"
short version:
$ hg log -r "g$HASH"
$ hg id -r "g$HASH"
"""
from __future__ import absolute_import
from mercurial import (
error,
extensions,
hg,
registrar,
revset,
)
from mercurial.i18n import _
import re
revsetpredicate = registrar.revsetpredicate()
githashre = re.compile('g([0-9a-fA-F]{40,40})')
templatekeyword = registrar.templatekeyword()
@templatekeyword("gitnode")
def showgitnode(repo, ctx, templ, **args):
"""Return the git revision corresponding to a given hg rev"""
hexgitnode = _lookup_node(repo, ctx.hex(), from_scm_type='hg')
# templates are expected to return an empty string when no
# data exists
return hexgitnode.encode('hex') if hexgitnode else ''
@revsetpredicate('gitnode(id)')
def gitnode(repo, subset, x):
"""``gitnode(id)``
Return the hg revision corresponding to a given git rev."""
l = revset.getargs(x, 1, 1, _("id requires one argument"))
n = revset.getstring(l[0], _("id requires a string"))
hexhgnode = _lookup_node(repo, n, from_scm_type='git')
if not hexhgnode:
raise error.RepoLookupError(_("unknown revision '%s'") % n)
rev = repo[hexhgnode].rev()
return subset.filter(lambda r: r == rev)
def _lookup_node(repo, hexnode, from_scm_type):
gitlookupnode = '_gitlookup_%s_%s' % (from_scm_type, hexnode)
# ui.expandpath('default') returns 'default' if there is no default
# path. This can be the case when command is ran on the server.
# In that case let's run lookup() command locally.
try:
return repo.lookup(gitlookupnode)
except error.RepoLookupError:
# Note: RepoLookupError is caught here because repo.lookup()
# can throw only this exception.
peerpath = repo.ui.expandpath('default')
# sshing can cause junk 'remote: ...' output to stdout, so we need to
# redirect it temporarily so automation can parse the result easily.
oldfout = repo.ui.fout
try:
repo.baseui.fout = repo.ui.ferr
remoterepo = hg.peer(repo, {}, peerpath)
return remoterepo.lookup(gitlookupnode)
except error.RepoError:
# Note: RepoError can be thrown by hg.peer(), RepoLookupError
# can be thrown by remoterepo.lookup(). RepoLookupError is a
# subclass of RepoError so catching just error.RepoError is enough.
return None
finally:
repo.baseui.fout = oldfout
def overridestringset(orig, repo, subset, x, *args, **kwargs):
m = githashre.match(x)
if m is not None:
return gitnode(repo, subset, ('string', m.group(1)))
return orig(repo, subset, x, *args, **kwargs)
def extsetup(ui):
extensions.wrapfunction(revset, 'stringset', overridestringset)
revset.methods['string'] = revset.stringset
revset.methods['symbol'] = revset.stringset