mercurial/windows.py
author Matt Mackall <mpm@selenic.com>
Wed, 16 Sep 2009 16:01:37 -0500
changeset 9449 61e30f257c15
parent 9238 40196d036a71
parent 9448 bc6b0fef9495
child 9549 8b8920209317
child 9591 012f1244cd4c
permissions -rw-r--r--
Merge with stable
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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, incorporated herein by reference.
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from i18n import _
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import osutil, error
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import errno, msvcrt, os, re, sys
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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: 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: 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() and "win32api" in globals()
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def system_rcpath():
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    try:
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        return system_rcpath_win32()
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    except:
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        return [r'c:\mercurial\mercurial.ini']
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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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    try:
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        path = user_rcpath_win32()
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    except:
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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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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 testpid(pid):
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    '''return False if pid dead, True if running or not known'''
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    return True
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def set_flags(f, l, x):
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    pass
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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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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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   128
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def realpath(path):
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    '''
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    Returns the true, canonical file system path equivalent to the given
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    path.
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    '''
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    # TODO: There may be a more clever way to do this that also handles other,
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    # less common file systems.
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    return os.path.normpath(os.path.normcase(os.path.realpath(path)))
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   137
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def samestat(s1, s2):
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    return False
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# 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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# - 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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# (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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# the number of backslashes that preceed double quotes and add another
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# 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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_quotere = None
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def shellquote(s):
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    global _quotere
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    if _quotere is None:
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        _quotere = re.compile(r'(\\*)("|\\$)')
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    return '"%s"' % _quotere.sub(r'\1\1\\\2', s)
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   158
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   159
def quotecommand(cmd):
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    """Build a command string suitable for os.popen* calls."""
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    # The extra quotes are needed because popen* runs the command
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    # through the current COMSPEC. cmd.exe suppress enclosing quotes.
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    return '"' + cmd + '"'
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def popen(command, mode='r'):
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    # Work around "popen spawned process may not write to stdout
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    # under windows"
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    # http://bugs.python.org/issue1366
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    command += " 2> %s" % nulldev
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    return os.popen(quotecommand(command), mode)
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def explain_exit(code):
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    return _("exited with status %d") % code, code
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# if you change this stub into a real check, please try to implement the
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# username and groupname functions above, too.
8657
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def isowner(st):
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    return True
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def find_exe(command):
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    '''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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    PATH isn't searched if command is an absolute or relative path.
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    An extension from PATHEXT is found and added if not present.
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    If command isn't found None is returned.'''
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   186
    pathext = os.environ.get('PATHEXT', '.COM;.EXE;.BAT;.CMD')
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    pathexts = [ext for ext in pathext.lower().split(os.pathsep)]
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    if os.path.splitext(command)[1].lower() in pathexts:
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        pathexts = ['']
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   190
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    def findexisting(pathcommand):
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        'Will append extension (if needed) and return existing file'
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        for ext in pathexts:
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            executable = pathcommand + ext
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            if os.path.exists(executable):
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                return executable
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        return None
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   198
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    if os.sep in command:
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        return findexisting(command)
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   201
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    for path in os.environ.get('PATH', '').split(os.pathsep):
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        executable = findexisting(os.path.join(path, command))
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        if executable is not None:
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            return executable
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    return None
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   207
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   208
def set_signal_handler():
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    try:
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        set_signal_handler_win32()
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   211
    except NameError:
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   212
        pass
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   213
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   214
def statfiles(files):
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   215
    '''Stat each file in files and yield stat or None if file does not exist.
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    Cluster and cache stat per directory to minimize number of OS stat calls.'''
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   217
    ncase = os.path.normcase
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   218
    sep   = os.sep
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    dircache = {} # dirname -> filename -> status | None if file does not exist
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    for nf in files:
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   221
        nf  = ncase(nf)
9099
3d456bf32f18 Use os.path.split() for MBCS with win32mbcs extension.
Shun-ichi GOTO <shunichi.goto@gmail.com>
parents: 8951
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   222
        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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   223
        if not dir:
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parents: 8951
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   224
            dir = '.'
7890
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        cache = dircache.get(dir, None)
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   226
        if cache is None:
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   227
            try:
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   228
                dmap = dict([(ncase(n), s)
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   229
                    for n, k, s in osutil.listdir(dir, True)])
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   230
            except OSError, err:
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   231
                # handle directory not found in Python version prior to 2.5
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   232
                # 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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   234
                # EINVAL is raised if dir is not a directory.
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   235
                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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   238
                dmap = {}
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   239
            cache = dircache.setdefault(dir, dmap)
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        yield cache.get(base, None)
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   241
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   242
def getuser():
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   243
    '''return name of current user'''
7949
443c0c8636ac windows: get Abort from error
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parents: 7934
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   244
    raise error.Abort(_('user name not available - set USERNAME '
7934
ec4784bb7d75 windows: break import cycle with util
Martin Geisler <mg@daimi.au.dk>
parents: 7933
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   245
                       'environment variable'))
7890
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   246
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   247
def username(uid=None):
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   248
    """Return the name of the user with the given uid.
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   249
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   250
    If uid is None, return the name of the current user."""
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   251
    return None
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   252
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   253
def groupname(gid=None):
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   254
    """Return the name of the group with the given gid.
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   255
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   256
    If gid is None, return the name of the current group."""
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   257
    return None
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   258
8364
fa901423ac23 windows: avoid deleting non-empty reparse points
Henrik Stuart <henrik.stuart@edlund.dk>
parents: 8330
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   259
def _removedirs(name):
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   260
    """special version of os.removedirs that does not remove symlinked
fa901423ac23 windows: avoid deleting non-empty reparse points
Henrik Stuart <henrik.stuart@edlund.dk>
parents: 8330
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   261
    directories or junction points if they actually contain files"""
fa901423ac23 windows: avoid deleting non-empty reparse points
Henrik Stuart <henrik.stuart@edlund.dk>
parents: 8330
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   262
    if osutil.listdir(name):
fa901423ac23 windows: avoid deleting non-empty reparse points
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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(name):
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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 unlink(f):
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    """unlink and remove the directory if it is empty"""
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    os.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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7890
e710f0f592b2 util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
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try:
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    # override functions with win32 versions if possible
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    from win32 import *
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except ImportError:
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    pass
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573734e7e6d0 cmdutils: Take over glob expansion duties from util
Matt Mackall <mpm@selenic.com>
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expandglobs = True