Revert "pylint: upgrade to 1.3.1"

third_party/logilab/astroid/modutils.py

Index: third_party/logilab/astroid/modutils.py
diff --git a/third_party/logilab/astroid/modutils.py b/third_party/logilab/astroid/modutils.py
deleted file mode 100644
index 1f4a4fc56d167102b4081d5f0f2a7904e674054c..0000000000000000000000000000000000000000
--- a/third_party/logilab/astroid/modutils.py
+++ /dev/null
@@ -1,635 +0,0 @@
-# copyright 2003-2014 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
-# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
-#
-# This file is part of astroid.
-#
-# astroid is free software: you can redistribute it and/or modify it under
-# the terms of the GNU Lesser General Public License as published by the Free
-# Software Foundation, either version 2.1 of the License, or (at your option) any
-# later version.
-#
-# astroid is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
-# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
-# details.
-#
-# You should have received a copy of the GNU Lesser General Public License along
-# with astroid.  If not, see <http://www.gnu.org/licenses/>.
-"""Python modules manipulation utility functions.
-
-:type PY_SOURCE_EXTS: tuple(str)
-:var PY_SOURCE_EXTS: list of possible python source file extension
-
-:type STD_LIB_DIR: str
-:var STD_LIB_DIR: directory where standard modules are located
-
-:type BUILTIN_MODULES: dict
-:var BUILTIN_MODULES: dictionary with builtin module names has key
-"""
-from __future__ import with_statement
-
-__docformat__ = "restructuredtext en"
-
-import sys
-import os
-from os.path import splitext, join, abspath, isdir, dirname, exists
-from imp import find_module, load_module, C_BUILTIN, PY_COMPILED, PKG_DIRECTORY
-from distutils.sysconfig import get_python_lib
-from distutils.errors import DistutilsPlatformError
-
-try:
-    import zipimport
-except ImportError:
-    zipimport = None
-
-ZIPFILE = object()
-
-from logilab.common import _handle_blacklist
-
-# Notes about STD_LIB_DIR
-# Consider arch-specific installation for STD_LIB_DIR definition
-# :mod:`distutils.sysconfig` contains to much hardcoded values to rely on
-#
-# :see: `Problems with /usr/lib64 builds <http://bugs.python.org/issue1294959>`_
-# :see: `FHS <http://www.pathname.com/fhs/pub/fhs-2.3.html#LIBLTQUALGTALTERNATEFORMATESSENTIAL>`_
-if sys.platform.startswith('win'):
-    PY_SOURCE_EXTS = ('py', 'pyw')
-    PY_COMPILED_EXTS = ('dll', 'pyd')
-else:
-    PY_SOURCE_EXTS = ('py',)
-    PY_COMPILED_EXTS = ('so',)
-
-try:
-    STD_LIB_DIR = get_python_lib(standard_lib=1)
-# get_python_lib(standard_lib=1) is not available on pypy, set STD_LIB_DIR to
-# non-valid path, see https://bugs.pypy.org/issue1164
-except DistutilsPlatformError:
-    STD_LIB_DIR = '//'
-
-EXT_LIB_DIR = get_python_lib()
-
-BUILTIN_MODULES = dict(zip(sys.builtin_module_names,
-                           [1]*len(sys.builtin_module_names)))
-
-
-class NoSourceFile(Exception):
-    """exception raised when we are not able to get a python
-    source file for a precompiled file
-    """
-
-
-def load_module_from_name(dotted_name, path=None, use_sys=1):
-    """Load a Python module from its name.
-
-    :type dotted_name: str
-    :param dotted_name: python name of a module or package
-
-    :type path: list or None
-    :param path:
-      optional list of path where the module or package should be
-      searched (use sys.path if nothing or None is given)
-
-    :type use_sys: bool
-    :param use_sys:
-      boolean indicating whether the sys.modules dictionary should be
-      used or not
-
-
-    :raise ImportError: if the module or package is not found
-
-    :rtype: module
-    :return: the loaded module
-    """
-    return load_module_from_modpath(dotted_name.split('.'), path, use_sys)
-
-
-def load_module_from_modpath(parts, path=None, use_sys=1):
-    """Load a python module from its splitted name.
-
-    :type parts: list(str) or tuple(str)
-    :param parts:
-      python name of a module or package splitted on '.'
-
-    :type path: list or None
-    :param path:
-      optional list of path where the module or package should be
-      searched (use sys.path if nothing or None is given)
-
-    :type use_sys: bool
-    :param use_sys:
-      boolean indicating whether the sys.modules dictionary should be used or not
-
-    :raise ImportError: if the module or package is not found
-
-    :rtype: module
-    :return: the loaded module
-    """
-    if use_sys:
-        try:
-            return sys.modules['.'.join(parts)]
-        except KeyError:
-            pass
-    modpath = []
-    prevmodule = None
-    for part in parts:
-        modpath.append(part)
-        curname = '.'.join(modpath)
-        module = None
-        if len(modpath) != len(parts):
-            # even with use_sys=False, should try to get outer packages from sys.modules
-            module = sys.modules.get(curname)
-        elif use_sys:
-            # because it may have been indirectly loaded through a parent
-            module = sys.modules.get(curname)
-        if module is None:
-            mp_file, mp_filename, mp_desc = find_module(part, path)
-            module = load_module(curname, mp_file, mp_filename, mp_desc)
-        if prevmodule:
-            setattr(prevmodule, part, module)
-        _file = getattr(module, '__file__', '')
-        if not _file and len(modpath) != len(parts):
-            raise ImportError('no module in %s' % '.'.join(parts[len(modpath):]))
-        path = [dirname(_file)]
-        prevmodule = module
-    return module
-
-
-def load_module_from_file(filepath, path=None, use_sys=1, extrapath=None):
-    """Load a Python module from it's path.
-
-    :type filepath: str
-    :param filepath: path to the python module or package
-
-    :type path: list or None
-    :param path:
-      optional list of path where the module or package should be
-      searched (use sys.path if nothing or None is given)
-
-    :type use_sys: bool
-    :param use_sys:
-      boolean indicating whether the sys.modules dictionary should be
-      used or not
-
-
-    :raise ImportError: if the module or package is not found
-
-    :rtype: module
-    :return: the loaded module
-    """
-    modpath = modpath_from_file(filepath, extrapath)
-    return load_module_from_modpath(modpath, path, use_sys)
-
-
-def _check_init(path, mod_path):
-    """check there are some __init__.py all along the way"""
-    for part in mod_path:
-        path = join(path, part)
-        if not _has_init(path):
-            return False
-    return True
-
-
-def modpath_from_file(filename, extrapath=None):
-    """given a file path return the corresponding splitted module's name
-    (i.e name of a module or package splitted on '.')
-
-    :type filename: str
-    :param filename: file's path for which we want the module's name
-
-    :type extrapath: dict
-    :param extrapath:
-      optional extra search path, with path as key and package name for the path
-      as value. This is usually useful to handle package splitted in multiple
-      directories using __path__ trick.
-
-
-    :raise ImportError:
-      if the corresponding module's name has not been found
-
-    :rtype: list(str)
-    :return: the corresponding splitted module's name
-    """
-    base = splitext(abspath(filename))[0]
-    if extrapath is not None:
-        for path_ in extrapath:
-            path = _abspath(path_)
-            if path and base[:len(path)] == path:
-                submodpath = [pkg for pkg in base[len(path):].split(os.sep)
-                              if pkg]
-                if _check_init(path, submodpath[:-1]):
-                    return extrapath[path_].split('.') + submodpath
-    for path in sys.path:
-        path = _abspath(path)
-        if path and base.startswith(path):
-            modpath = [pkg for pkg in base[len(path):].split(os.sep) if pkg]
-            if _check_init(path, modpath[:-1]):
-                return modpath
-    raise ImportError('Unable to find module for %s in %s' % (
-        filename, ', \n'.join(sys.path)))
-
-
-
-def file_from_modpath(modpath, path=None, context_file=None):
-    """given a mod path (i.e. splitted module / package name), return the
-    corresponding file, giving priority to source file over precompiled
-    file if it exists
-
-    :type modpath: list or tuple
-    :param modpath:
-      splitted module's name (i.e name of a module or package splitted
-      on '.')
-      (this means explicit relative imports that start with dots have
-      empty strings in this list!)
-
-    :type path: list or None
-    :param path:
-      optional list of path where the module or package should be
-      searched (use sys.path if nothing or None is given)
-
-    :type context_file: str or None
-    :param context_file:
-      context file to consider, necessary if the identifier has been
-      introduced using a relative import unresolvable in the actual
-      context (i.e. modutils)
-
-    :raise ImportError: if there is no such module in the directory
-
-    :rtype: str or None
-    :return:
-      the path to the module's file or None if it's an integrated
-      builtin module such as 'sys'
-    """
-    if context_file is not None:
-        context = dirname(context_file)
-    else:
-        context = context_file
-    if modpath[0] == 'xml':
-        # handle _xmlplus
-        try:
-            return _file_from_modpath(['_xmlplus'] + modpath[1:], path, context)
-        except ImportError:
-            return _file_from_modpath(modpath, path, context)
-    elif modpath == ['os', 'path']:
-        # FIXME: currently ignoring search_path...
-        return os.path.__file__
-    return _file_from_modpath(modpath, path, context)
-
-
-
-def get_module_part(dotted_name, context_file=None):
-    """given a dotted name return the module part of the name :
-
-    >>> get_module_part('logilab.common.modutils.get_module_part')
-    'logilab.common.modutils'
-
-    :type dotted_name: str
-    :param dotted_name: full name of the identifier we are interested in
-
-    :type context_file: str or None
-    :param context_file:
-      context file to consider, necessary if the identifier has been
-      introduced using a relative import unresolvable in the actual
-      context (i.e. modutils)
-
-
-    :raise ImportError: if there is no such module in the directory
-
-    :rtype: str or None
-    :return:
-      the module part of the name or None if we have not been able at
-      all to import the given name
-
-    XXX: deprecated, since it doesn't handle package precedence over module
-    (see #10066)
-    """
-    # os.path trick
-    if dotted_name.startswith('os.path'):
-        return 'os.path'
-    parts = dotted_name.split('.')
-    if context_file is not None:
-        # first check for builtin module which won't be considered latter
-        # in that case (path != None)
-        if parts[0] in BUILTIN_MODULES:
-            if len(parts) > 2:
-                raise ImportError(dotted_name)
-            return parts[0]
-        # don't use += or insert, we want a new list to be created !
-    path = None
-    starti = 0
-    if parts[0] == '':
-        assert context_file is not None, \
-                'explicit relative import, but no context_file?'
-        path = [] # prevent resolving the import non-relatively
-        starti = 1
-    while parts[starti] == '': # for all further dots: change context
-        starti += 1
-        context_file = dirname(context_file)
-    for i in range(starti, len(parts)):
-        try:
-            file_from_modpath(parts[starti:i+1], path=path,
-                              context_file=context_file)
-        except ImportError:
-            if not i >= max(1, len(parts) - 2):
-                raise
-            return '.'.join(parts[:i])
-    return dotted_name
-
-
-def get_module_files(src_directory, blacklist):
-    """given a package directory return a list of all available python
-    module's files in the package and its subpackages
-
-    :type src_directory: str
-    :param src_directory:
-      path of the directory corresponding to the package
-
-    :type blacklist: list or tuple
-    :param blacklist:
-      optional list of files or directory to ignore, default to the value of
-      `logilab.common.STD_BLACKLIST`
-
-    :rtype: list
-    :return:
-      the list of all available python module's files in the package and
-      its subpackages
-    """
-    files = []
-    for directory, dirnames, filenames in os.walk(src_directory):
-        _handle_blacklist(blacklist, dirnames, filenames)
-        # check for __init__.py
-        if not '__init__.py' in filenames:
-            dirnames[:] = ()
-            continue
-        for filename in filenames:
-            if _is_python_file(filename):
-                src = join(directory, filename)
-                files.append(src)
-    return files
-
-
-def get_source_file(filename, include_no_ext=False):
-    """given a python module's file name return the matching source file
-    name (the filename will be returned identically if it's a already an
-    absolute path to a python source file...)
-
-    :type filename: str
-    :param filename: python module's file name
-
-
-    :raise NoSourceFile: if no source file exists on the file system
-
-    :rtype: str
-    :return: the absolute path of the source file if it exists
-    """
-    base, orig_ext = splitext(abspath(filename))
-    for ext in PY_SOURCE_EXTS:
-        source_path = '%s.%s' % (base, ext)
-        if exists(source_path):
-            return source_path
-    if include_no_ext and not orig_ext and exists(base):
-        return base
-    raise NoSourceFile(filename)
-
-
-def is_python_source(filename):
-    """
-    rtype: bool
-    return: True if the filename is a python source file
-    """
-    return splitext(filename)[1][1:] in PY_SOURCE_EXTS
-
-
-def is_standard_module(modname, std_path=(STD_LIB_DIR,)):
-    """try to guess if a module is a standard python module (by default,
-    see `std_path` parameter's description)
-
-    :type modname: str
-    :param modname: name of the module we are interested in
-
-    :type std_path: list(str) or tuple(str)
-    :param std_path: list of path considered has standard
-
-
-    :rtype: bool
-    :return:
-      true if the module:
-      - is located on the path listed in one of the directory in `std_path`
-      - is a built-in module
-    """
-    modname = modname.split('.')[0]
-    try:
-        filename = file_from_modpath([modname])
-    except ImportError:
-        # import failed, i'm probably not so wrong by supposing it's
-        # not standard...
-        return False
-    # modules which are not living in a file are considered standard
-    # (sys and __builtin__ for instance)
-    if filename is None:
-        return True
-    filename = abspath(filename)
-    if filename.startswith(EXT_LIB_DIR):
-        return False
-    for path in std_path:
-        if filename.startswith(_abspath(path)):
-            return True
-    return False
-
-
-
-def is_relative(modname, from_file):
-    """return true if the given module name is relative to the given
-    file name
-
-    :type modname: str
-    :param modname: name of the module we are interested in
-
-    :type from_file: str
-    :param from_file:
-      path of the module from which modname has been imported
-
-    :rtype: bool
-    :return:
-      true if the module has been imported relatively to `from_file`
-    """
-    if not isdir(from_file):
-        from_file = dirname(from_file)
-    if from_file in sys.path:
-        return False
-    try:
-        find_module(modname.split('.')[0], [from_file])
-        return True
-    except ImportError:
-        return False
-
-
-# internal only functions #####################################################
-
-def _file_from_modpath(modpath, path=None, context=None):
-    """given a mod path (i.e. splitted module / package name), return the
-    corresponding file
-
-    this function is used internally, see `file_from_modpath`'s
-    documentation for more information
-    """
-    assert len(modpath) > 0
-    if context is not None:
-        try:
-            mtype, mp_filename = _module_file(modpath, [context])
-        except ImportError:
-            mtype, mp_filename = _module_file(modpath, path)
-    else:
-        mtype, mp_filename = _module_file(modpath, path)
-    if mtype == PY_COMPILED:
-        try:
-            return get_source_file(mp_filename)
-        except NoSourceFile:
-            return mp_filename
-    elif mtype == C_BUILTIN:
-        # integrated builtin module
-        return None
-    elif mtype == PKG_DIRECTORY:
-        mp_filename = _has_init(mp_filename)
-    return mp_filename
-
-def _search_zip(modpath, pic):
-    for filepath, importer in pic.items():
-        if importer is not None:
-            if importer.find_module(modpath[0]):
-                if not importer.find_module(os.path.sep.join(modpath)):
-                    raise ImportError('No module named %s in %s/%s' % (
-                        '.'.join(modpath[1:]), filepath, modpath))
-                return ZIPFILE, abspath(filepath) + os.path.sep + os.path.sep.join(modpath), filepath
-    raise ImportError('No module named %s' % '.'.join(modpath))
-
-
-def _abspath(path, _abspathcache={}): #pylint: disable=dangerous-default-value
-    """abspath with caching"""
-    # _module_file calls abspath on every path in sys.path every time it's
-    # called; on a larger codebase this easily adds up to half a second just
-    # assembling path components. This cache alleviates that.
-    try:
-        return _abspathcache[path]
-    except KeyError:
-        if not path: # don't cache result for ''
-            return abspath(path)
-        _abspathcache[path] = abspath(path)
-        return _abspathcache[path]
-
-try:
-    import pkg_resources
-except ImportError:
-    pkg_resources = None
-
-def _module_file(modpath, path=None):
-    """get a module type / file path
-
-    :type modpath: list or tuple
-    :param modpath:
-      splitted module's name (i.e name of a module or package splitted
-      on '.'), with leading empty strings for explicit relative import
-
-    :type path: list or None
-    :param path:
-      optional list of path where the module or package should be
-      searched (use sys.path if nothing or None is given)
-
-
-    :rtype: tuple(int, str)
-    :return: the module type flag and the file path for a module
-    """
-    # egg support compat
-    try:
-        pic = sys.path_importer_cache
-        _path = (path is None and sys.path or path)
-        for __path in _path:
-            if not __path in pic:
-                try:
-                    pic[__path] = zipimport.zipimporter(__path)
-                except zipimport.ZipImportError:
-                    pic[__path] = None
-        checkeggs = True
-    except AttributeError:
-        checkeggs = False
-    # pkg_resources support (aka setuptools namespace packages)
-    if pkg_resources is not None and modpath[0] in pkg_resources._namespace_packages and len(modpath) > 1:
-        # setuptools has added into sys.modules a module object with proper
-        # __path__, get back information from there
-        module = sys.modules[modpath.pop(0)]
-        path = module.__path__
-    imported = []
-    while modpath:
-        modname = modpath[0]
-        # take care to changes in find_module implementation wrt builtin modules
-        #
-        # Python 2.6.6 (r266:84292, Sep 11 2012, 08:34:23)
-        # >>> imp.find_module('posix')
-        # (None, 'posix', ('', '', 6))
-        #
-        # Python 3.3.1 (default, Apr 26 2013, 12:08:46)
-        # >>> imp.find_module('posix')
-        # (None, None, ('', '', 6))
-        try:
-            _, mp_filename, mp_desc = find_module(modname, path)
-        except ImportError:
-            if checkeggs:
-                return _search_zip(modpath, pic)[:2]
-            raise
-        else:
-            if checkeggs and mp_filename:
-                fullabspath = [_abspath(x) for x in _path]
-                try:
-                    pathindex = fullabspath.index(dirname(abspath(mp_filename)))
-                    emtype, emp_filename, zippath = _search_zip(modpath, pic)
-                    if pathindex > _path.index(zippath):
-                        # an egg takes priority
-                        return emtype, emp_filename
-                except ValueError:
-                    # XXX not in _path
-                    pass
-                except ImportError:
-                    pass
-                checkeggs = False
-        imported.append(modpath.pop(0))
-        mtype = mp_desc[2]
-        if modpath:
-            if mtype != PKG_DIRECTORY:
-                raise ImportError('No module %s in %s' % ('.'.join(modpath),
-                                                          '.'.join(imported)))
-            # XXX guess if package is using pkgutil.extend_path by looking for
-            # those keywords in the first four Kbytes
-            try:
-                with open(join(mp_filename, '__init__.py')) as stream:
-                    data = stream.read(4096)
-            except IOError:
-                path = [mp_filename]
-            else:
-                if 'pkgutil' in data and 'extend_path' in data:
-                    # extend_path is called, search sys.path for module/packages
-                    # of this name see pkgutil.extend_path documentation
-                    path = [join(p, *imported) for p in sys.path
-                            if isdir(join(p, *imported))]
-                else:
-                    path = [mp_filename]
-    return mtype, mp_filename
-
-def _is_python_file(filename):
-    """return true if the given filename should be considered as a python file
-
-    .pyc and .pyo are ignored
-    """
-    for ext in ('.py', '.so', '.pyd', '.pyw'):
-        if filename.endswith(ext):
-            return True
-    return False
-
-
-def _has_init(directory):
-    """if the given directory has a valid __init__ file, return its path,
-    else return None
-    """
-    mod_or_pack = join(directory, '__init__')
-    for ext in PY_SOURCE_EXTS + ('pyc', 'pyo'):
-        if exists(mod_or_pack + '.' + ext):
-            return mod_or_pack + '.' + ext
-    return None