import os, stat
import re
import sys
import tempfile
tempprefix = 'hg-hghave-'
checks = {
"true": (lambda: True, "yak shaving"),
"false": (lambda: False, "nail clipper"),
}
def check(name, desc):
def decorator(func):
checks[name] = (func, desc)
return func
return decorator
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)
@check("baz", "GNU Arch baz client")
def has_baz():
return matchoutput('baz --version 2>&1', r'baz Bazaar version')
@check("bzr", "Canonical's Bazaar client")
def has_bzr():
try:
import bzrlib
return bzrlib.__doc__ is not None
except ImportError:
return False
@check("bzr114", "Canonical's Bazaar client >= 1.14")
def has_bzr114():
try:
import bzrlib
return (bzrlib.__doc__ is not None
and bzrlib.version_info[:2] >= (1, 14))
except ImportError:
return False
@check("cvs", "cvs client/server")
def has_cvs():
re = r'Concurrent Versions System.*?server'
return matchoutput('cvs --version 2>&1', re) and not has_msys()
@check("cvs112", "cvs client/server >= 1.12")
def has_cvs112():
re = r'Concurrent Versions System \(CVS\) 1.12.*?server'
return matchoutput('cvs --version 2>&1', re) and not has_msys()
@check("darcs", "darcs client")
def has_darcs():
return matchoutput('darcs --version', r'2\.[2-9]', True)
@check("mtn", "monotone client (>= 1.0)")
def has_mtn():
return matchoutput('mtn --version', r'monotone', True) and not matchoutput(
'mtn --version', r'monotone 0\.', True)
@check("eol-in-paths", "end-of-lines in paths")
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
@check("execbit", "executable bit")
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)
@check("icasefs", "case insensitive file system")
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)
@check("fifo", "named pipes")
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
@check("killdaemons", 'killdaemons.py support')
def has_killdaemons():
return True
@check("cacheable", "cacheable filesystem")
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)
@check("lsprof", "python lsprof module")
def has_lsprof():
try:
import _lsprof
_lsprof.Profiler # silence unused import warning
return True
except ImportError:
return False
@check("gettext", "GNU Gettext (msgfmt)")
def has_gettext():
return matchoutput('msgfmt --version', 'GNU gettext-tools')
@check("git", "git command line client")
def has_git():
return matchoutput('git --version 2>&1', r'^git version')
@check("docutils", "Docutils text processing library")
def has_docutils():
try:
from docutils.core import publish_cmdline
publish_cmdline # silence unused import
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)))
@check("svn15", "subversion client and admin tools >= 1.5")
def has_svn15():
return getsvnversion() >= (1, 5)
@check("svn13", "subversion client and admin tools >= 1.3")
def has_svn13():
return getsvnversion() >= (1, 3)
@check("svn", "subversion client and admin tools")
def has_svn():
return matchoutput('svn --version 2>&1', r'^svn, version') and \
matchoutput('svnadmin --version 2>&1', r'^svnadmin, version')
@check("svn-bindings", "subversion python bindings")
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
@check("p4", "Perforce server and client")
def has_p4():
return (matchoutput('p4 -V', r'Rev\. P4/') and
matchoutput('p4d -V', r'Rev\. P4D/'))
@check("symlink", "symbolic links")
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
@check("hardlink", "hardlinks")
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)
@check("tla", "GNU Arch tla client")
def has_tla():
return matchoutput('tla --version 2>&1', r'The GNU Arch Revision')
@check("gpg", "gpg client")
def has_gpg():
return matchoutput('gpg --version 2>&1', r'GnuPG')
@check("unix-permissions", "unix-style permissions")
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)
@check("root", "root permissions")
def has_root():
return getattr(os, 'geteuid', None) and os.geteuid() == 0
@check("pyflakes", "Pyflakes python linter")
def has_pyflakes():
return matchoutput("sh -c \"echo 'import re' 2>&1 | pyflakes\"",
r"<stdin>:1: 're' imported but unused",
True)
@check("pygments", "Pygments source highlighting library")
def has_pygments():
try:
import pygments
pygments.highlight # silence unused import warning
return True
except ImportError:
return False
@check("python243", "python >= 2.4.3")
def has_python243():
return sys.version_info >= (2, 4, 3)
@check("outer-repo", "outer repo")
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)
@check("ssl", "python >= 2.6 ssl module and python OpenSSL")
def has_ssl():
try:
import ssl
ssl.wrap_socket # silence unused import warning
import OpenSSL
OpenSSL.SSL.Context
return True
except ImportError:
return False
@check("windows", "Windows")
def has_windows():
return os.name == 'nt'
@check("system-sh", "system() uses sh")
def has_system_sh():
return os.name != 'nt'
@check("serve", "platform and python can manage 'hg serve -d'")
def has_serve():
return os.name != 'nt' # gross approximation
@check("test-repo", "running tests from repository")
def has_test_repo():
t = os.environ["TESTDIR"]
return os.path.isdir(os.path.join(t, "..", ".hg"))
@check("tic", "terminfo compiler and curses module")
def has_tic():
try:
import curses
curses.COLOR_BLUE
return matchoutput('test -x "`which tic`"', '')
except ImportError:
return False
@check("msys", "Windows with MSYS")
def has_msys():
return os.getenv('MSYSTEM')
@check("aix", "AIX")
def has_aix():
return sys.platform.startswith("aix")
@check("absimport", "absolute_import in __future__")
def has_absimport():
import __future__
from mercurial import util
return util.safehasattr(__future__, "absolute_import")
@check("py3k", "running with Python 3.x")
def has_py3k():
return 3 == sys.version_info[0]