Python os.fsencode方法代码示例

# 需要导入模块: import os [as 别名]
# 或者: from os import fsencode [as 别名]
def find_library(name):
            ename = re.escape(name)
            expr = r':-l%s\.\S+ => \S*/(lib%s\.\S+)' % (ename, ename)
            expr = os.fsencode(expr)

            try:
                proc = subprocess.Popen(('/sbin/ldconfig', '-r'),
                                        stdout=subprocess.PIPE,
                                        stderr=subprocess.DEVNULL)
            except OSError:  # E.g. command not found
                data = b''
            else:
                with proc:
                    data = proc.stdout.read()

            res = re.findall(expr, data)
            if not res:
                return _get_soname(_findLib_gcc(name))
            res.sort(key=_num_version)
            return os.fsdecode(res[-1]) 

# 需要导入模块: import os [as 别名]
# 或者: from os import fsencode [as 别名]
def _sanitize_params(prefix, suffix, dir):
    """Common parameter processing for most APIs in this module."""
    output_type = _infer_return_type(prefix, suffix, dir)
    if suffix is None:
        suffix = output_type()
    if prefix is None:
        if output_type is str:
            prefix = template
        else:
            prefix = _os.fsencode(template)
    if dir is None:
        if output_type is str:
            dir = gettempdir()
        else:
            dir = gettempdirb()
    return prefix, suffix, dir, output_type 

# 需要导入模块: import os [as 别名]
# 或者: from os import fsencode [as 别名]
def expanduser(path):
    """Expand ~ and ~user constructions.  If user or $HOME is unknown,
    do nothing."""
    if isinstance(path, bytes):
        tilde = b'~'
    else:
        tilde = '~'
    if not path.startswith(tilde):
        return path
    sep = _get_sep(path)
    i = path.find(sep, 1)
    if i < 0:
        i = len(path)
    if i == 1:
        if 'HOME' not in os.environ:
            import pwd
            userhome = pwd.getpwuid(os.getuid()).pw_dir
        else:
            userhome = os.environ['HOME']
    else:
        import pwd
        name = path[1:i]
        if isinstance(name, bytes):
            name = str(name, 'ASCII')
        try:
            pwent = pwd.getpwnam(name)
        except KeyError:
            return path
        userhome = pwent.pw_dir
    if isinstance(path, bytes):
        userhome = os.fsencode(userhome)
        root = b'/'
    else:
        root = '/'
    userhome = userhome.rstrip(root)
    return (userhome + path[i:]) or root


# Expand paths containing shell variable substitutions.
# This expands the forms $variable and ${variable} only.
# Non-existent variables are left unchanged. 

# 需要导入模块: import os [as 别名]
# 或者: from os import fsencode [as 别名]
def binary_value_or_stdin(value):
    """
    Return fsencoded value or read raw data from stdin if value is None.
    """
    if value is None:
        reader = io.open(sys.stdin.fileno(), mode='rb', closefd=False)
        return reader.read()
    elif six.PY3:
        return os.fsencode(value)
    else:
        return value 

# 需要导入模块: import os [as 别名]
# 或者: from os import fsencode [as 别名]
def test_fspath_fsencode(self, path1):
        from os import fsencode
        assert fsencode(path1) == fsencode(path1.strpath) 

# 需要导入模块: import os [as 别名]
# 或者: from os import fsencode [as 别名]
def fsencode(filename):
        if isinstance(filename, bytes):
            return filename
        elif isinstance(filename, str):
            return filename.encode(sys.getfilesystemencoding())
        else:
            raise TypeError("expect bytes or str, not %s" %
                            type(filename).__name__) 

# 需要导入模块: import os [as 别名]
# 或者: from os import fsencode [as 别名]
def fsencode(filename):
        if isinstance(filename, bytes):
            return filename
        elif isinstance(filename, text_type):
            return filename.encode(_fsencoding, _fserrors)
        else:
            raise TypeError("expect bytes or str, not %s" %
                            type(filename).__name__) 

# 需要导入模块: import os [as 别名]
# 或者: from os import fsencode [as 别名]
def __bytes__(self):
        """Return the bytes representation of the path.  This is only
        recommended to use under Unix."""
        if sys.version_info < (3, 2):
            raise NotImplementedError("needs Python 3.2 or later")
        return os.fsencode(str(self)) 

# 需要导入模块: import os [as 别名]
# 或者: from os import fsencode [as 别名]
def _findLib_gcc(name):
        # Run GCC's linker with the -t (aka --trace) option and examine the
        # library name it prints out. The GCC command will fail because we
        # haven't supplied a proper program with main(), but that does not
        # matter.
        expr = os.fsencode(r'[^\(\)\s]*lib%s\.[^\(\)\s]*' % re.escape(name))

        c_compiler = shutil.which('gcc')
        if not c_compiler:
            c_compiler = shutil.which('cc')
        if not c_compiler:
            # No C compiler available, give up
            return None

        temp = tempfile.NamedTemporaryFile()
        try:
            args = [c_compiler, '-Wl,-t', '-o', temp.name, '-l' + name]

            env = dict(os.environ)
            env['LC_ALL'] = 'C'
            env['LANG'] = 'C'
            try:
                proc = subprocess.Popen(args,
                                        stdout=subprocess.PIPE,
                                        stderr=subprocess.STDOUT,
                                        env=env)
            except OSError:  # E.g. bad executable
                return None
            with proc:
                trace = proc.stdout.read()
        finally:
            try:
                temp.close()
            except FileNotFoundError:
                # Raised if the file was already removed, which is the normal
                # behaviour of GCC if linking fails
                pass
        res = re.search(expr, trace)
        if not res:
            return None
        return os.fsdecode(res.group(0)) 

# 需要导入模块: import os [as 别名]
# 或者: from os import fsencode [as 别名]
def _findSoname_ldconfig(name):
            import struct
            if struct.calcsize('l') == 4:
                machine = os.uname().machine + '-32'
            else:
                machine = os.uname().machine + '-64'
            mach_map = {
                'x86_64-64': 'libc6,x86-64',
                'ppc64-64': 'libc6,64bit',
                'sparc64-64': 'libc6,64bit',
                's390x-64': 'libc6,64bit',
                'ia64-64': 'libc6,IA-64',
                }
            abi_type = mach_map.get(machine, 'libc6')

            # XXX assuming GLIBC's ldconfig (with option -p)
            regex = r'\s+(lib%s\.[^\s]+)\s+\(%s'
            regex = os.fsencode(regex % (re.escape(name), abi_type))
            try:
                with subprocess.Popen(['/sbin/ldconfig', '-p'],
                                      stdin=subprocess.DEVNULL,
                                      stderr=subprocess.DEVNULL,
                                      stdout=subprocess.PIPE,
                                      env={'LC_ALL': 'C', 'LANG': 'C'}) as p:
                    res = re.search(regex, p.stdout.read())
                    if res:
                        return os.fsdecode(res.group(1))
            except OSError:
                pass 

# 需要导入模块: import os [as 别名]
# 或者: from os import fsencode [as 别名]
def __init__(self, basePath=None, ignoreDirs=None):
        if basePath:
            self.__index = DirHasher.FileIndex(basePath)
        else:
            self.__index = DirHasher.NullIndex()
        if ignoreDirs:
            self.__ignoreDirs = DirHasher.IGNORE_DIRS | frozenset(os.fsencode(i) for i in ignoreDirs)
        else:
            self.__ignoreDirs = DirHasher.IGNORE_DIRS 

# 需要导入模块: import os [as 别名]
# 或者: from os import fsencode [as 别名]
def __hashLink(path):
            m = hashlib.sha1()
            try:
                m.update(os.fsencode(os.readlink(os.fsdecode(path))))
            except OSError as e:
                logging.getLogger(__name__).warning("Cannot hash link: %s", str(e))
            return m.digest() 

# 需要导入模块: import os [as 别名]
# 或者: from os import fsencode [as 别名]
def __hashDir(self, prefix, path=b''):
        entries = []
        try:
            dirEntries = os.listdir(os.path.join(prefix, path if path else b'.'))
        except OSError as e:
            logging.getLogger(__name__).warning("Cannot list directory: %s", str(e))
            dirEntries = []

        for f in dirEntries:
            e = os.path.join(path, f)
            try:
                s = os.lstat(os.path.join(prefix, e))
                if stat.S_ISDIR(s.st_mode):
                    # skip useless directories
                    if f in self.__ignoreDirs: continue
                    # add training '/' for directores for correct sorting
                    f = f + os.fsencode(os.path.sep)
                else:
                    # skip useless files
                    if f in DirHasher.IGNORE_FILES: continue
                entries.append((e, f, s))
            except OSError as err:
                logging.getLogger(__name__).warning("Cannot stat '%s': %s", e, str(err))
        entries = sorted(entries, key=lambda x: x[1])
        dirList = [
            (struct.pack("=L", s.st_mode) + self.__hashEntry(prefix, e, s) + f)
            for (e, f, s) in entries
        ]
        dirBlob = b"".join(dirList)
        m = hashlib.sha1()
        m.update(dirBlob)
        return m.digest() 

# 需要导入模块: import os [as 别名]
# 或者: from os import fsencode [as 别名]
def hashDirectory(self, path):
        self.__index.open()
        try:
            return self.__hashDir(os.fsencode(path))
        finally:
            self.__index.close() 

# 需要导入模块: import os [as 别名]
# 或者: from os import fsencode [as 别名]
def hashPath(self, path):
        path = os.fsencode(path)
        try:
            s = os.lstat(path)
        except OSError as err:
            logging.getLogger(__name__).warning("Cannot stat '%s': %s", path, str(err))
            return b''

        self.__index.open()
        try:
            return self.__hashEntry(path, b'', s)
        finally:
            self.__index.close()