10 import tempfile

     8 import hghave

    12 tempprefix = 'hg-hghave-'

    10 checks = hghave.checks

    13 

    14 def matchoutput(cmd, regexp, ignorestatus=False):

    15     """Return True if cmd executes successfully and its output

    16     is matched by the supplied regular expression.

    17     """

    18     r = re.compile(regexp)

    19     fh = os.popen(cmd)

    20     s = fh.read()

    21     try:

    22         ret = fh.close()

    23     except IOError:

    24         # Happen in Windows test environment

    25         ret = 1

    26     return (ignorestatus or ret is None) and r.search(s)

    27 

    28 def has_baz():

    29     return matchoutput('baz --version 2>&1', r'baz Bazaar version')

    30 

    31 def has_bzr():

    32     try:

    33         import bzrlib

    34         return bzrlib.__doc__ is not None

    35     except ImportError:

    36         return False

    37 

    38 def has_bzr114():

    39     try:

    40         import bzrlib

    41         return (bzrlib.__doc__ is not None

    42                 and bzrlib.version_info[:2] >= (1, 14))

    43     except ImportError:

    44         return False

    45 

    46 def has_cvs():

    47     re = r'Concurrent Versions System.*?server'

    48     return matchoutput('cvs --version 2>&1', re) and not has_msys()

    49 

    50 def has_darcs():

    51     return matchoutput('darcs --version', r'2\.[2-9]', True)

    52 

    53 def has_mtn():

    54     return matchoutput('mtn --version', r'monotone', True) and not matchoutput(

    55         'mtn --version', r'monotone 0\.', True)

    56 

    57 def has_eol_in_paths():

    58     try:

    59         fd, path = tempfile.mkstemp(prefix=tempprefix, suffix='\n\r')

    60         os.close(fd)

    61         os.remove(path)

    62         return True

    63     except (IOError, OSError):

    64         return False

    65 

    66 def has_executablebit():

    67     try:

    68         EXECFLAGS = stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH

    69         fh, fn = tempfile.mkstemp(dir=".", prefix='hg-checkexec-')

    70         try:

    71             os.close(fh)

    72             m = os.stat(fn).st_mode & 0777

    73             new_file_has_exec = m & EXECFLAGS

    74             os.chmod(fn, m ^ EXECFLAGS)

    75             exec_flags_cannot_flip = ((os.stat(fn).st_mode & 0777) == m)

    76         finally:

    77             os.unlink(fn)

    78     except (IOError, OSError):

    79         # we don't care, the user probably won't be able to commit anyway

    80         return False

    81     return not (new_file_has_exec or exec_flags_cannot_flip)

    82 

    83 def has_icasefs():

    84     # Stolen from mercurial.util

    85     fd, path = tempfile.mkstemp(prefix=tempprefix, dir='.')

    86     os.close(fd)

    87     try:

    88         s1 = os.stat(path)

    89         d, b = os.path.split(path)

    90         p2 = os.path.join(d, b.upper())

    91         if path == p2:

    92             p2 = os.path.join(d, b.lower())

    93         try:

    94             s2 = os.stat(p2)

    95             return s2 == s1

    96         except OSError:

    97             return False

    98     finally:

    99         os.remove(path)

   100 

   101 def has_inotify():

   102     try:

   103         import hgext.inotify.linux.watcher

   104         return True

   105     except ImportError:

   106         return False

   107 

   108 def has_fifo():

   109     return getattr(os, "mkfifo", None) is not None

   110 

   111 def has_cacheable_fs():

   112     from mercurial import util

   113 

   114     fd, path = tempfile.mkstemp(prefix=tempprefix)

   115     os.close(fd)

   116     try:

   117         return util.cachestat(path).cacheable()

   118     finally:

   119         os.remove(path)

   120 

   121 def has_lsprof():

   122     try:

   123         import _lsprof

   124         return True

   125     except ImportError:

   126         return False

   127 

   128 def has_gettext():

   129     return matchoutput('msgfmt --version', 'GNU gettext-tools')

   130 

   131 def has_git():

   132     return matchoutput('git --version 2>&1', r'^git version')

   133 

   134 def has_docutils():

   135     try:

   136         from docutils.core import publish_cmdline

   137         return True

   138     except ImportError:

   139         return False

   140 

   141 def getsvnversion():

   142     m = matchoutput('svn --version 2>&1', r'^svn,\s+version\s+(\d+)\.(\d+)')

   143     if not m:

   144         return (0, 0)

   145     return (int(m.group(1)), int(m.group(2)))

   146 

   147 def has_svn15():

   148     return getsvnversion() >= (1, 5)

   149 

   150 def has_svn13():

   151     return getsvnversion() >= (1, 3)

   152 

   153 def has_svn():

   154     return matchoutput('svn --version 2>&1', r'^svn, version') and \

   155         matchoutput('svnadmin --version 2>&1', r'^svnadmin, version')

   156 

   157 def has_svn_bindings():

   158     try:

   159         import svn.core

   160         version = svn.core.SVN_VER_MAJOR, svn.core.SVN_VER_MINOR

   161         if version < (1, 4):

   162             return False

   163         return True

   164     except ImportError:

   165         return False

   166 

   167 def has_p4():

   168     return (matchoutput('p4 -V', r'Rev\. P4/') and

   169             matchoutput('p4d -V', r'Rev\. P4D/'))

   170 

   171 def has_symlink():

   172     if getattr(os, "symlink", None) is None:

   173         return False

   174     name = tempfile.mktemp(dir=".", prefix='hg-checklink-')

   175     try:

   176         os.symlink(".", name)

   177         os.unlink(name)

   178         return True

   179     except (OSError, AttributeError):

   180         return False

   181 

   182 def has_tla():

   183     return matchoutput('tla --version 2>&1', r'The GNU Arch Revision')

   184 

   185 def has_gpg():

   186     return matchoutput('gpg --version 2>&1', r'GnuPG')

   187 

   188 def has_unix_permissions():

   189     d = tempfile.mkdtemp(prefix=tempprefix, dir=".")

   190     try:

   191         fname = os.path.join(d, 'foo')

   192         for umask in (077, 007, 022):

   193             os.umask(umask)

   194             f = open(fname, 'w')

   195             f.close()

   196             mode = os.stat(fname).st_mode

   197             os.unlink(fname)

   198             if mode & 0777 != ~umask & 0666:

   199                 return False

   200         return True

   201     finally:

   202         os.rmdir(d)

   203 

   204 def has_pyflakes():

   205     return matchoutput("sh -c \"echo 'import re' 2>&1 | pyflakes\"",

   206                        r"<stdin>:1: 're' imported but unused",

   207                        True)

   208 

   209 def has_pygments():

   210     try:

   211         import pygments

   212         return True

   213     except ImportError:

   214         return False

   215 

   216 def has_outer_repo():

   217     return matchoutput('hg root 2>&1', r'')

   218 

   219 def has_ssl():

   220     try:

   221         import ssl

   222         import OpenSSL

   223         OpenSSL.SSL.Context

   224         return True

   225     except ImportError:

   226         return False

   227 

   228 def has_windows():

   229     return os.name == 'nt'

   230 

   231 def has_system_sh():

   232     return os.name != 'nt'

   233 

   234 def has_serve():

   235     return os.name != 'nt' # gross approximation

   236 

   237 def has_tic():

   238     return matchoutput('test -x "`which tic`"', '')

   239 

   240 def has_msys():

   241     return os.getenv('MSYSTEM')

   242 

   243 checks = {

   244     "true": (lambda: True, "yak shaving"),

   245     "false": (lambda: False, "nail clipper"),

   246     "baz": (has_baz, "GNU Arch baz client"),

   247     "bzr": (has_bzr, "Canonical's Bazaar client"),

   248     "bzr114": (has_bzr114, "Canonical's Bazaar client >= 1.14"),

   249     "cacheable": (has_cacheable_fs, "cacheable filesystem"),

   250     "cvs": (has_cvs, "cvs client/server"),

   251     "darcs": (has_darcs, "darcs client"),

   252     "docutils": (has_docutils, "Docutils text processing library"),

   253     "eol-in-paths": (has_eol_in_paths, "end-of-lines in paths"),

   254     "execbit": (has_executablebit, "executable bit"),

   255     "fifo": (has_fifo, "named pipes"),

   256     "gettext": (has_gettext, "GNU Gettext (msgfmt)"),

   257     "git": (has_git, "git command line client"),

   258     "gpg": (has_gpg, "gpg client"),

   259     "icasefs": (has_icasefs, "case insensitive file system"),

   260     "inotify": (has_inotify, "inotify extension support"),

   261     "lsprof": (has_lsprof, "python lsprof module"),

   262     "mtn": (has_mtn, "monotone client (>= 1.0)"),

   263     "outer-repo": (has_outer_repo, "outer repo"),

   264     "p4": (has_p4, "Perforce server and client"),

   265     "pyflakes": (has_pyflakes, "Pyflakes python linter"),

   266     "pygments": (has_pygments, "Pygments source highlighting library"),

   267     "serve": (has_serve, "platform and python can manage 'hg serve -d'"),

   268     "ssl": (has_ssl, "python >= 2.6 ssl module and python OpenSSL"),

   269     "svn": (has_svn, "subversion client and admin tools"),

   270     "svn13": (has_svn13, "subversion client and admin tools >= 1.3"),

   271     "svn15": (has_svn15, "subversion client and admin tools >= 1.5"),

   272     "svn-bindings": (has_svn_bindings, "subversion python bindings"),

   273     "symlink": (has_symlink, "symbolic links"),

   274     "system-sh": (has_system_sh, "system() uses sh"),

   275     "tic": (has_tic, "terminfo compiler"),

   276     "tla": (has_tla, "GNU Arch tla client"),

   277     "unix-permissions": (has_unix_permissions, "unix-style permissions"),

   278     "windows": (has_windows, "Windows"),

   279     "msys": (has_msys, "Windows with MSYS"),

   280 }