mercurial/windows.py
author Adrian Buehlmann <adrian@cadifra.com>
Tue, 05 Apr 2011 11:55:52 +0200
changeset 13890 31eb145b50b6
parent 13879 5b0a3f6cbead
child 13986 9c374cf76b7d
permissions -rw-r--r--
util: move checklink() to posix.py and return False on Windows Python added support for Windows 6.0 (Vista) symbolic links in 3.2 [1], but even these symbolic links aren't what we can expect from a canonical symbolic link, since creation requires SeCreateSymbolicLinkPrivilege, which typically only admins have. So we can safely assume that we don't have symbolic links on Windows. [1] http://docs.python.org/py3k/library/os.html#os.symlink
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# windows.py - Windows utility function implementations for Mercurial
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#
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#  Copyright 2005-2009 Matt Mackall <mpm@selenic.com> and others
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from i18n import _
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import osutil, error
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import errno, msvcrt, os, re, sys, subprocess
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nulldev = 'NUL:'
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umask = 002
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# wrap osutil.posixfile to provide friendlier exceptions
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def posixfile(name, mode='r', buffering=-1):
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    try:
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        return osutil.posixfile(name, mode, buffering)
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    except WindowsError, err:
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        raise IOError(err.errno, '%s: %s' % (name, err.strerror))
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posixfile.__doc__ = osutil.posixfile.__doc__
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class winstdout(object):
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    '''stdout on windows misbehaves if sent through a pipe'''
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    def __init__(self, fp):
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        self.fp = fp
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    def __getattr__(self, key):
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        return getattr(self.fp, key)
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    def close(self):
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        try:
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            self.fp.close()
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        except: pass
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    def write(self, s):
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        try:
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            # This is workaround for "Not enough space" error on
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            # writing large size of data to console.
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            limit = 16000
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            l = len(s)
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            start = 0
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            self.softspace = 0
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            while start < l:
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                end = start + limit
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                self.fp.write(s[start:end])
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                start = end
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        except IOError, inst:
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            if inst.errno != 0:
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                raise
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            self.close()
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            raise IOError(errno.EPIPE, 'Broken pipe')
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    def flush(self):
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        try:
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            return self.fp.flush()
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        except IOError, inst:
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            if inst.errno != errno.EINVAL:
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                raise
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            self.close()
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            raise IOError(errno.EPIPE, 'Broken pipe')
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sys.stdout = winstdout(sys.stdout)
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def _is_win_9x():
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    '''return true if run on windows 95, 98 or me.'''
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    try:
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        return sys.getwindowsversion()[3] == 1
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    except AttributeError:
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        return 'command' in os.environ.get('comspec', '')
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def openhardlinks():
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    return not _is_win_9x()
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_HKEY_LOCAL_MACHINE = 0x80000002L
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def system_rcpath():
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    '''return default os-specific hgrc search path'''
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    rcpath = []
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    filename = executable_path()
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    # Use mercurial.ini found in directory with hg.exe
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    progrc = os.path.join(os.path.dirname(filename), 'mercurial.ini')
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    if os.path.isfile(progrc):
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        rcpath.append(progrc)
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        return rcpath
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    # Use hgrc.d found in directory with hg.exe
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    progrcd = os.path.join(os.path.dirname(filename), 'hgrc.d')
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    if os.path.isdir(progrcd):
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        for f, kind in osutil.listdir(progrcd):
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            if f.endswith('.rc'):
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                rcpath.append(os.path.join(progrcd, f))
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        return rcpath
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    # else look for a system rcpath in the registry
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    value = lookup_reg('SOFTWARE\\Mercurial', None, _HKEY_LOCAL_MACHINE)
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    if not isinstance(value, str) or not value:
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        return rcpath
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    value = value.replace('/', os.sep)
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    for p in value.split(os.pathsep):
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        if p.lower().endswith('mercurial.ini'):
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            rcpath.append(p)
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        elif os.path.isdir(p):
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            for f, kind in osutil.listdir(p):
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                if f.endswith('.rc'):
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                    rcpath.append(os.path.join(p, f))
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    return rcpath
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def user_rcpath():
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    '''return os-specific hgrc search path to the user dir'''
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    home = os.path.expanduser('~')
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    path = [os.path.join(home, 'mercurial.ini'),
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            os.path.join(home, '.hgrc')]
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    userprofile = os.environ.get('USERPROFILE')
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    if userprofile:
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        path.append(os.path.join(userprofile, 'mercurial.ini'))
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        path.append(os.path.join(userprofile, '.hgrc'))
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    return path
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def parse_patch_output(output_line):
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    """parses the output produced by patch and returns the filename"""
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    pf = output_line[14:]
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    if pf[0] == '`':
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        pf = pf[1:-1] # Remove the quotes
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    return pf
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   125
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def sshargs(sshcmd, host, user, port):
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    '''Build argument list for ssh or Plink'''
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    pflag = 'plink' in sshcmd.lower() and '-P' or '-p'
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    args = user and ("%s@%s" % (user, host)) or host
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    return port and ("%s %s %s" % (args, pflag, port)) or args
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def set_flags(f, l, x):
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    pass
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13879
5b0a3f6cbead util: move checkexec() to posix.py and return False on Windows
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def checkexec(path):
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   136
    return False
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   137
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   138
def checklink(path):
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    return False
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   140
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def set_binary(fd):
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    # When run without console, pipes may expose invalid
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    # fileno(), usually set to -1.
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    if hasattr(fd, 'fileno') and fd.fileno() >= 0:
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        msvcrt.setmode(fd.fileno(), os.O_BINARY)
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   146
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def pconvert(path):
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    return '/'.join(path.split(os.sep))
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def localpath(path):
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    return path.replace('/', '\\')
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def normpath(path):
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    return pconvert(os.path.normpath(path))
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9238
40196d036a71 util: add realpath() for getting the 'true' path.
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 9174
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def realpath(path):
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   157
    '''
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   158
    Returns the true, canonical file system path equivalent to the given
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   159
    path.
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   160
    '''
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   161
    # TODO: There may be a more clever way to do this that also handles other,
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   162
    # less common file systems.
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   163
    return os.path.normpath(os.path.normcase(os.path.realpath(path)))
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parents: 9174
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   164
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def samestat(s1, s2):
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   166
    return False
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   167
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   168
# A sequence of backslashes is special iff it precedes a double quote:
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# - if there's an even number of backslashes, the double quote is not
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#   quoted (i.e. it ends the quoted region)
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   171
# - if there's an odd number of backslashes, the double quote is quoted
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# - in both cases, every pair of backslashes is unquoted into a single
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#   backslash
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   174
# (See http://msdn2.microsoft.com/en-us/library/a1y7w461.aspx )
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# So, to quote a string, we must surround it in double quotes, double
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   176
# the number of backslashes that preceed double quotes and add another
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   177
# backslash before every double quote (being careful with the double
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# quote we've appended to the end)
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   179
_quotere = None
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   180
def shellquote(s):
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   181
    global _quotere
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   182
    if _quotere is None:
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   183
        _quotere = re.compile(r'(\\*)("|\\$)')
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   184
    return '"%s"' % _quotere.sub(r'\1\1\\\2', s)
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   185
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   186
def quotecommand(cmd):
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   187
    """Build a command string suitable for os.popen* calls."""
13188
6c9345f9edca util: concentrate quoting knowledge to windows.py quotecommand()
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parents: 12689
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   188
    if sys.version_info < (2, 7, 1):
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parents: 12689
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   189
        # Python versions since 2.7.1 do this extra quoting themselves
6c9345f9edca util: concentrate quoting knowledge to windows.py quotecommand()
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   190
        return '"' + cmd + '"'
6c9345f9edca util: concentrate quoting knowledge to windows.py quotecommand()
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parents: 12689
diff changeset
   191
    return cmd
7890
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   193
def popen(command, mode='r'):
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   194
    # Work around "popen spawned process may not write to stdout
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   195
    # under windows"
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   196
    # http://bugs.python.org/issue1366
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   197
    command += " 2> %s" % nulldev
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   198
    return os.popen(quotecommand(command), mode)
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   199
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   200
def explain_exit(code):
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   201
    return _("exited with status %d") % code, code
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   202
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   203
# if you change this stub into a real check, please try to implement the
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   204
# username and groupname functions above, too.
8657
3fa92c618624 posix: do not use fstat in isowner
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parents: 8614
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   205
def isowner(st):
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   206
    return True
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   207
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   208
def find_exe(command):
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   209
    '''Find executable for command searching like cmd.exe does.
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    If command is a basename then PATH is searched for command.
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   211
    PATH isn't searched if command is an absolute or relative path.
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   212
    An extension from PATHEXT is found and added if not present.
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   213
    If command isn't found None is returned.'''
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   214
    pathext = os.environ.get('PATHEXT', '.COM;.EXE;.BAT;.CMD')
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   215
    pathexts = [ext for ext in pathext.lower().split(os.pathsep)]
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   216
    if os.path.splitext(command)[1].lower() in pathexts:
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   217
        pathexts = ['']
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   218
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   219
    def findexisting(pathcommand):
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   220
        'Will append extension (if needed) and return existing file'
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   221
        for ext in pathexts:
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   222
            executable = pathcommand + ext
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   223
            if os.path.exists(executable):
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   224
                return executable
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   225
        return None
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   226
e710f0f592b2 util: split out posix, windows, and win32 modules
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   227
    if os.sep in command:
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   228
        return findexisting(command)
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   229
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   230
    for path in os.environ.get('PATH', '').split(os.pathsep):
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   231
        executable = findexisting(os.path.join(path, command))
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   232
        if executable is not None:
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   233
            return executable
10156
c31ac3f7fd8f windows: expand environment vars in find_exe
Steve Borho <steve@borho.org>
parents: 9594
diff changeset
   234
    return findexisting(os.path.expanduser(os.path.expandvars(command)))
7890
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   235
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   236
def statfiles(files):
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   237
    '''Stat each file in files and yield stat or None if file does not exist.
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   238
    Cluster and cache stat per directory to minimize number of OS stat calls.'''
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   239
    ncase = os.path.normcase
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   240
    dircache = {} # dirname -> filename -> status | None if file does not exist
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   241
    for nf in files:
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   242
        nf  = ncase(nf)
9099
3d456bf32f18 Use os.path.split() for MBCS with win32mbcs extension.
Shun-ichi GOTO <shunichi.goto@gmail.com>
parents: 8951
diff changeset
   243
        dir, base = os.path.split(nf)
3d456bf32f18 Use os.path.split() for MBCS with win32mbcs extension.
Shun-ichi GOTO <shunichi.goto@gmail.com>
parents: 8951
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   244
        if not dir:
3d456bf32f18 Use os.path.split() for MBCS with win32mbcs extension.
Shun-ichi GOTO <shunichi.goto@gmail.com>
parents: 8951
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   245
            dir = '.'
7890
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   246
        cache = dircache.get(dir, None)
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   247
        if cache is None:
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   248
            try:
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   249
                dmap = dict([(ncase(n), s)
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   250
                    for n, k, s in osutil.listdir(dir, True)])
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   251
            except OSError, err:
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   252
                # handle directory not found in Python version prior to 2.5
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                # Python <= 2.4 returns native Windows code 3 in errno
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                # Python >= 2.5 returns ENOENT and adds winerror field
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                # EINVAL is raised if dir is not a directory.
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                if err.errno not in (3, errno.ENOENT, errno.EINVAL,
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                                     errno.ENOTDIR):
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                    raise
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                dmap = {}
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            cache = dircache.setdefault(dir, dmap)
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        yield cache.get(base, None)
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def username(uid=None):
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    """Return the name of the user with the given uid.
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    If uid is None, return the name of the current user."""
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    return None
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def groupname(gid=None):
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    """Return the name of the group with the given gid.
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    If gid is None, return the name of the current group."""
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    return None
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def _removedirs(name):
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    """special version of os.removedirs that does not remove symlinked
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    directories or junction points if they actually contain files"""
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    if osutil.listdir(name):
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        return
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    os.rmdir(name)
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    head, tail = os.path.split(name)
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    if not tail:
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        head, tail = os.path.split(head)
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    while head and tail:
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        try:
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            if osutil.listdir(head):
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                return
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            os.rmdir(head)
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        except:
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            break
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        head, tail = os.path.split(head)
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def unlinkpath(f):
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    """unlink and remove the directory if it is empty"""
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    unlink(f)
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    # try removing directories that might now be empty
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    try:
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        _removedirs(os.path.dirname(f))
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    except OSError:
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        pass
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def rename(src, dst):
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    '''atomically rename file src to dst, replacing dst if it exists'''
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    try:
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        os.rename(src, dst)
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    except OSError, e:
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        if e.errno != errno.EEXIST:
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            raise
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        unlink(dst)
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        os.rename(src, dst)
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   311
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def gethgcmd():
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    return [sys.executable] + sys.argv[:1]
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def termwidth():
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    # cmd.exe does not handle CR like a unix console, the CR is
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    # counted in the line length. On 80 columns consoles, if 80
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    # characters are written, the following CR won't apply on the
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    # current line but on the new one. Keep room for it.
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    return 79
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   321
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def groupmembers(name):
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    # Don't support groups on Windows for now
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    raise KeyError()
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   325
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from win32 import *
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expandglobs = True