localrepo: make supported features manageable in each repositories individually
Before this patch, all localrepositories support same features,
because supported features are managed by the class variable
"supported" of "localrepository".
For example, "largefiles" feature provided by largefiles extension is
recognized as supported, by adding the feature name to "supported" of
"localrepository".
So, commands handling multiple repositories at a time like below
misunderstand that such features are supported also in repositories
not enabling corresponded extensions:
- clone/pull from or push to localhost
- recursive execution in subrepo tree
"reposetup()" can't be used to fix this problem, because it is invoked
after checking whether supported features satisfy ones required in the
target repository.
So, this patch adds the set object named as "featuresetupfuncs" to
"localrepository" to manage hook functions to setup supported features
of each repositories.
If any functions are added to "featuresetupfuncs", they are invoked,
and information about supported features is managed in each
repositories individually.
This patch also adds checking below:
- pull from localhost: whether features supported in the local(= dst)
repository satisfies ones required in the remote(= src)
- push to localhost: whether features supported in the remote(= dst)
repository satisfies ones required in the local(= src)
Managing supported features by the class variable means that there is
no difference of supported features between each instances of
"localrepository" in the same Python process, so such checking is not
needed before this patch.
Even with this patch, if intermediate bundlefile is used as pulling
source, pulling indirectly from the remote repository, which requires
features more than ones supported in the local, can't be prevented,
because bundlefile has no information about "required features" in it.
import os, stat, socket
import re
import sys
import tempfile
tempprefix = 'hg-hghave-'
def matchoutput(cmd, regexp, ignorestatus=False):
"""Return True if cmd executes successfully and its output
is matched by the supplied regular expression.
"""
r = re.compile(regexp)
fh = os.popen(cmd)
s = fh.read()
try:
ret = fh.close()
except IOError:
# Happen in Windows test environment
ret = 1
return (ignorestatus or ret is None) and r.search(s)
def has_baz():
return matchoutput('baz --version 2>&1', r'baz Bazaar version')
def has_bzr():
try:
import bzrlib
return bzrlib.__doc__ is not None
except ImportError:
return False
def has_bzr114():
try:
import bzrlib
return (bzrlib.__doc__ is not None
and bzrlib.version_info[:2] >= (1, 14))
except ImportError:
return False
def has_cvs():
re = r'Concurrent Versions System.*?server'
return matchoutput('cvs --version 2>&1', re) and not has_msys()
def has_cvs112():
re = r'Concurrent Versions System \(CVS\) 1.12.*?server'
return matchoutput('cvs --version 2>&1', re) and not has_msys()
def has_darcs():
return matchoutput('darcs --version', r'2\.[2-9]', True)
def has_mtn():
return matchoutput('mtn --version', r'monotone', True) and not matchoutput(
'mtn --version', r'monotone 0\.', True)
def has_eol_in_paths():
try:
fd, path = tempfile.mkstemp(dir='.', prefix=tempprefix, suffix='\n\r')
os.close(fd)
os.remove(path)
return True
except (IOError, OSError):
return False
def has_executablebit():
try:
EXECFLAGS = stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH
fh, fn = tempfile.mkstemp(dir='.', prefix=tempprefix)
try:
os.close(fh)
m = os.stat(fn).st_mode & 0777
new_file_has_exec = m & EXECFLAGS
os.chmod(fn, m ^ EXECFLAGS)
exec_flags_cannot_flip = ((os.stat(fn).st_mode & 0777) == m)
finally:
os.unlink(fn)
except (IOError, OSError):
# we don't care, the user probably won't be able to commit anyway
return False
return not (new_file_has_exec or exec_flags_cannot_flip)
def has_icasefs():
# Stolen from mercurial.util
fd, path = tempfile.mkstemp(dir='.', prefix=tempprefix)
os.close(fd)
try:
s1 = os.stat(path)
d, b = os.path.split(path)
p2 = os.path.join(d, b.upper())
if path == p2:
p2 = os.path.join(d, b.lower())
try:
s2 = os.stat(p2)
return s2 == s1
except OSError:
return False
finally:
os.remove(path)
def has_inotify():
try:
import hgext.inotify.linux.watcher
except ImportError:
return False
name = tempfile.mktemp(dir='.', prefix=tempprefix)
sock = socket.socket(socket.AF_UNIX)
try:
sock.bind(name)
except socket.error:
return False
sock.close()
os.unlink(name)
return True
def has_fifo():
if getattr(os, "mkfifo", None) is None:
return False
name = tempfile.mktemp(dir='.', prefix=tempprefix)
try:
os.mkfifo(name)
os.unlink(name)
return True
except OSError:
return False
def has_killdaemons():
return True
def has_cacheable_fs():
from mercurial import util
fd, path = tempfile.mkstemp(dir='.', prefix=tempprefix)
os.close(fd)
try:
return util.cachestat(path).cacheable()
finally:
os.remove(path)
def has_lsprof():
try:
import _lsprof
return True
except ImportError:
return False
def has_gettext():
return matchoutput('msgfmt --version', 'GNU gettext-tools')
def has_git():
return matchoutput('git --version 2>&1', r'^git version')
def has_docutils():
try:
from docutils.core import publish_cmdline
return True
except ImportError:
return False
def getsvnversion():
m = matchoutput('svn --version --quiet 2>&1', r'^(\d+)\.(\d+)')
if not m:
return (0, 0)
return (int(m.group(1)), int(m.group(2)))
def has_svn15():
return getsvnversion() >= (1, 5)
def has_svn13():
return getsvnversion() >= (1, 3)
def has_svn():
return matchoutput('svn --version 2>&1', r'^svn, version') and \
matchoutput('svnadmin --version 2>&1', r'^svnadmin, version')
def has_svn_bindings():
try:
import svn.core
version = svn.core.SVN_VER_MAJOR, svn.core.SVN_VER_MINOR
if version < (1, 4):
return False
return True
except ImportError:
return False
def has_p4():
return (matchoutput('p4 -V', r'Rev\. P4/') and
matchoutput('p4d -V', r'Rev\. P4D/'))
def has_symlink():
if getattr(os, "symlink", None) is None:
return False
name = tempfile.mktemp(dir='.', prefix=tempprefix)
try:
os.symlink(".", name)
os.unlink(name)
return True
except (OSError, AttributeError):
return False
def has_hardlink():
from mercurial import util
fh, fn = tempfile.mkstemp(dir='.', prefix=tempprefix)
os.close(fh)
name = tempfile.mktemp(dir='.', prefix=tempprefix)
try:
try:
util.oslink(fn, name)
os.unlink(name)
return True
except OSError:
return False
finally:
os.unlink(fn)
def has_tla():
return matchoutput('tla --version 2>&1', r'The GNU Arch Revision')
def has_gpg():
return matchoutput('gpg --version 2>&1', r'GnuPG')
def has_unix_permissions():
d = tempfile.mkdtemp(dir='.', prefix=tempprefix)
try:
fname = os.path.join(d, 'foo')
for umask in (077, 007, 022):
os.umask(umask)
f = open(fname, 'w')
f.close()
mode = os.stat(fname).st_mode
os.unlink(fname)
if mode & 0777 != ~umask & 0666:
return False
return True
finally:
os.rmdir(d)
def has_pyflakes():
return matchoutput("sh -c \"echo 'import re' 2>&1 | pyflakes\"",
r"<stdin>:1: 're' imported but unused",
True)
def has_pygments():
try:
import pygments
return True
except ImportError:
return False
def has_outer_repo():
# failing for other reasons than 'no repo' imply that there is a repo
return not matchoutput('hg root 2>&1',
r'abort: no repository found', True)
def has_ssl():
try:
import ssl
import OpenSSL
OpenSSL.SSL.Context
return True
except ImportError:
return False
def has_windows():
return os.name == 'nt'
def has_system_sh():
return os.name != 'nt'
def has_serve():
return os.name != 'nt' # gross approximation
def has_tic():
return matchoutput('test -x "`which tic`"', '')
def has_msys():
return os.getenv('MSYSTEM')
def has_aix():
return sys.platform.startswith("aix")
checks = {
"true": (lambda: True, "yak shaving"),
"false": (lambda: False, "nail clipper"),
"baz": (has_baz, "GNU Arch baz client"),
"bzr": (has_bzr, "Canonical's Bazaar client"),
"bzr114": (has_bzr114, "Canonical's Bazaar client >= 1.14"),
"cacheable": (has_cacheable_fs, "cacheable filesystem"),
"cvs": (has_cvs, "cvs client/server"),
"cvs112": (has_cvs112, "cvs client/server >= 1.12"),
"darcs": (has_darcs, "darcs client"),
"docutils": (has_docutils, "Docutils text processing library"),
"eol-in-paths": (has_eol_in_paths, "end-of-lines in paths"),
"execbit": (has_executablebit, "executable bit"),
"fifo": (has_fifo, "named pipes"),
"gettext": (has_gettext, "GNU Gettext (msgfmt)"),
"git": (has_git, "git command line client"),
"gpg": (has_gpg, "gpg client"),
"hardlink": (has_hardlink, "hardlinks"),
"icasefs": (has_icasefs, "case insensitive file system"),
"inotify": (has_inotify, "inotify extension support"),
"killdaemons": (has_killdaemons, 'killdaemons.py support'),
"lsprof": (has_lsprof, "python lsprof module"),
"mtn": (has_mtn, "monotone client (>= 1.0)"),
"outer-repo": (has_outer_repo, "outer repo"),
"p4": (has_p4, "Perforce server and client"),
"pyflakes": (has_pyflakes, "Pyflakes python linter"),
"pygments": (has_pygments, "Pygments source highlighting library"),
"serve": (has_serve, "platform and python can manage 'hg serve -d'"),
"ssl": (has_ssl, "python >= 2.6 ssl module and python OpenSSL"),
"svn": (has_svn, "subversion client and admin tools"),
"svn13": (has_svn13, "subversion client and admin tools >= 1.3"),
"svn15": (has_svn15, "subversion client and admin tools >= 1.5"),
"svn-bindings": (has_svn_bindings, "subversion python bindings"),
"symlink": (has_symlink, "symbolic links"),
"system-sh": (has_system_sh, "system() uses sh"),
"tic": (has_tic, "terminfo compiler"),
"tla": (has_tla, "GNU Arch tla client"),
"unix-permissions": (has_unix_permissions, "unix-style permissions"),
"windows": (has_windows, "Windows"),
"msys": (has_msys, "Windows with MSYS"),
"aix": (has_aix, "AIX"),
}