+
−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"),
+
−}