Python TempDirectory.create方法代码示例

# 需要导入模块: from pip._internal.utils.temp_dir import TempDirectory [as 别名]
# 或者: from pip._internal.utils.temp_dir.TempDirectory import create [as 别名]
    def _get_file_stash(self, path):
        # type: (str) -> str
        """Stashes a file.

        If no root has been provided, one will be created for the directory
        in the user's temp directory."""
        path = os.path.normcase(path)
        head, old_head = os.path.dirname(path), None
        save_dir = None

        while head != old_head:
            try:
                save_dir = self._save_dirs[head]
                break
            except KeyError:
                pass
            head, old_head = os.path.dirname(head), head
        else:
            # Did not find any suitable root
            head = os.path.dirname(path)
            save_dir = TempDirectory(kind='uninstall')
            save_dir.create()
            self._save_dirs[head] = save_dir

        relpath = os.path.relpath(path, head)
        if relpath and relpath != os.path.curdir:
            return os.path.join(save_dir.path, relpath)
        return save_dir.path

# 需要导入模块: from pip._internal.utils.temp_dir import TempDirectory [as 别名]
# 或者: from pip._internal.utils.temp_dir.TempDirectory import create [as 别名]
class BuildEnvironment(object):
    """Creates and manages an isolated environment to install build deps
    """

    def __init__(self, no_clean):
        self._temp_dir = TempDirectory(kind="build-env")
        self._no_clean = no_clean

    @property
    def path(self):
        return self._temp_dir.path

    def __enter__(self):
        self._temp_dir.create()

        self.save_path = os.environ.get('PATH', None)
        self.save_pythonpath = os.environ.get('PYTHONPATH', None)

        install_scheme = 'nt' if (os.name == 'nt') else 'posix_prefix'
        install_dirs = get_paths(install_scheme, vars={
            'base': self.path,
            'platbase': self.path,
        })

        scripts = install_dirs['scripts']
        if self.save_path:
            os.environ['PATH'] = scripts + os.pathsep + self.save_path
        else:
            os.environ['PATH'] = scripts + os.pathsep + os.defpath

        if install_dirs['purelib'] == install_dirs['platlib']:
            lib_dirs = install_dirs['purelib']
        else:
            lib_dirs = install_dirs['purelib'] + os.pathsep + \
                install_dirs['platlib']
        if self.save_pythonpath:
            os.environ['PYTHONPATH'] = lib_dirs + os.pathsep + \
                self.save_pythonpath
        else:
            os.environ['PYTHONPATH'] = lib_dirs

        return self.path

    def __exit__(self, exc_type, exc_val, exc_tb):
        if not self._no_clean:
            self._temp_dir.cleanup()
        if self.save_path is None:
            os.environ.pop('PATH', None)
        else:
            os.environ['PATH'] = self.save_path

        if self.save_pythonpath is None:
            os.environ.pop('PYTHONPATH', None)
        else:
            os.environ['PYTHONPATH'] = self.save_pythonpath

    def cleanup(self):
        self._temp_dir.cleanup()

# 需要导入模块: from pip._internal.utils.temp_dir import TempDirectory [as 别名]
# 或者: from pip._internal.utils.temp_dir.TempDirectory import create [as 别名]
    def test_create_and_cleanup_work(self):
        tmp_dir = TempDirectory()
        assert tmp_dir.path is None

        tmp_dir.create()
        created_path = tmp_dir.path
        assert tmp_dir.path is not None
        assert os.path.exists(created_path)

        tmp_dir.cleanup()
        assert tmp_dir.path is None
        assert not os.path.exists(created_path)

# 需要导入模块: from pip._internal.utils.temp_dir import TempDirectory [as 别名]
# 或者: from pip._internal.utils.temp_dir.TempDirectory import create [as 别名]
class EphemWheelCache(SimpleWheelCache):
    """A SimpleWheelCache that creates it's own temporary cache directory
    """

    def __init__(self, format_control):
        self._temp_dir = TempDirectory(kind="ephem-wheel-cache")
        self._temp_dir.create()

        super(EphemWheelCache, self).__init__(
            self._temp_dir.path, format_control
        )

    def cleanup(self):
        self._temp_dir.cleanup()

# 需要导入模块: from pip._internal.utils.temp_dir import TempDirectory [as 别名]
# 或者: from pip._internal.utils.temp_dir.TempDirectory import create [as 别名]
    def run(self, options, args):
        cmdoptions.check_install_build_global(options)

        upgrade_strategy = "to-satisfy-only"
        if options.upgrade:
            upgrade_strategy = options.upgrade_strategy

        if options.build_dir:
            options.build_dir = os.path.abspath(options.build_dir)

        options.src_dir = os.path.abspath(options.src_dir)
        install_options = options.install_options or []
        if options.use_user_site:
            if options.prefix_path:
                raise CommandError(
                    "Can not combine '--user' and '--prefix' as they imply "
                    "different installation locations"
                )
            if virtualenv_no_global():
                raise InstallationError(
                    "Can not perform a '--user' install. User site-packages "
                    "are not visible in this virtualenv."
                )
            install_options.append('--user')
            install_options.append('--prefix=')

        target_temp_dir = TempDirectory(kind="target")
        if options.target_dir:
            options.ignore_installed = True
            options.target_dir = os.path.abspath(options.target_dir)
            if (os.path.exists(options.target_dir) and not
                    os.path.isdir(options.target_dir)):
                raise CommandError(
                    "Target path exists but is not a directory, will not "
                    "continue."
                )

            # Create a target directory for using with the target option
            target_temp_dir.create()
            install_options.append('--home=' + target_temp_dir.path)

        global_options = options.global_options or []

        with self._build_session(options) as session:

            finder = self._build_package_finder(options, session)
            build_delete = (not (options.no_clean or options.build_dir))
            wheel_cache = WheelCache(options.cache_dir, options.format_control)
            if options.cache_dir and not check_path_owner(options.cache_dir):
                logger.warning(
                    "The directory '%s' or its parent directory is not owned "
                    "by the current user and caching wheels has been "
                    "disabled. check the permissions and owner of that "
                    "directory. If executing pip with sudo, you may want "
                    "sudo's -H flag.",
                    options.cache_dir,
                )
                options.cache_dir = None

            with TempDirectory(
                options.build_dir, delete=build_delete, kind="install"
            ) as directory:
                requirement_set = RequirementSet(
                    target_dir=target_temp_dir.path,
                    pycompile=options.compile,
                    require_hashes=options.require_hashes,
                    use_user_site=options.use_user_site,
                )

                self.populate_requirement_set(
                    requirement_set, args, options, finder, session, self.name,
                    wheel_cache
                )
                preparer = RequirementPreparer(
                    build_dir=directory.path,
                    src_dir=options.src_dir,
                    download_dir=None,
                    wheel_download_dir=None,
                    progress_bar=options.progress_bar,
                )
                try:
                    resolver = Resolver(
                        preparer=preparer,
                        finder=finder,
                        session=session,
                        wheel_cache=wheel_cache,
                        use_user_site=options.use_user_site,
                        upgrade_strategy=upgrade_strategy,
                        force_reinstall=options.force_reinstall,
                        ignore_dependencies=options.ignore_dependencies,
                        ignore_requires_python=options.ignore_requires_python,
                        ignore_installed=options.ignore_installed,
                        isolated=options.isolated_mode,
                    )
                    resolver.resolve(requirement_set)

                    # on -d don't do complex things like building
                    # wheels, and don't try to build wheels when wheel is
                    # not installed.
                    if wheel and options.cache_dir:
#.........这里部分代码省略.........

# 需要导入模块: from pip._internal.utils.temp_dir import TempDirectory [as 别名]
# 或者: from pip._internal.utils.temp_dir.TempDirectory import create [as 别名]
class UninstallPathSet(object):
    """A set of file paths to be removed in the uninstallation of a
    requirement."""
    def __init__(self, dist):
        self.paths = set()
        self._refuse = set()
        self.pth = {}
        self.dist = dist
        self.save_dir = TempDirectory(kind="uninstall")
        self._moved_paths = []

    def _permitted(self, path):
        """
        Return True if the given path is one we are permitted to
        remove/modify, False otherwise.

        """
        return is_local(path)

    def add(self, path):
        head, tail = os.path.split(path)

        # we normalize the head to resolve parent directory symlinks, but not
        # the tail, since we only want to uninstall symlinks, not their targets
        path = os.path.join(normalize_path(head), os.path.normcase(tail))

        if not os.path.exists(path):
            return
        if self._permitted(path):
            self.paths.add(path)
        else:
            self._refuse.add(path)

        # __pycache__ files can show up after 'installed-files.txt' is created,
        # due to imports
        if os.path.splitext(path)[1] == '.py' and uses_pycache:
            self.add(cache_from_source(path))

    def add_pth(self, pth_file, entry):
        pth_file = normalize_path(pth_file)
        if self._permitted(pth_file):
            if pth_file not in self.pth:
                self.pth[pth_file] = UninstallPthEntries(pth_file)
            self.pth[pth_file].add(entry)
        else:
            self._refuse.add(pth_file)

    def _stash(self, path):
        return os.path.join(
            self.save_dir.path, os.path.splitdrive(path)[1].lstrip(os.path.sep)
        )

    def remove(self, auto_confirm=False, verbose=False):
        """Remove paths in ``self.paths`` with confirmation (unless
        ``auto_confirm`` is True)."""

        if not self.paths:
            logger.info(
                "Can't uninstall '%s'. No files were found to uninstall.",
                self.dist.project_name,
            )
            return

        dist_name_version = (
            self.dist.project_name + "-" + self.dist.version
        )
        logger.info('Uninstalling %s:', dist_name_version)

        with indent_log():
            if auto_confirm or self._allowed_to_proceed(verbose):
                self.save_dir.create()

                for path in sorted(compact(self.paths)):
                    new_path = self._stash(path)
                    logger.debug('Removing file or directory %s', path)
                    self._moved_paths.append(path)
                    renames(path, new_path)
                for pth in self.pth.values():
                    pth.remove()

                logger.info('Successfully uninstalled %s', dist_name_version)

    def _allowed_to_proceed(self, verbose):
        """Display which files would be deleted and prompt for confirmation
        """

        def _display(msg, paths):
            if not paths:
                return

            logger.info(msg)
            with indent_log():
                for path in sorted(compact(paths)):
                    logger.info(path)

        if not verbose:
            will_remove, will_skip = compress_for_output_listing(self.paths)
        else:
            # In verbose mode, display all the files that are going to be
            # deleted.
#.........这里部分代码省略.........

# 需要导入模块: from pip._internal.utils.temp_dir import TempDirectory [as 别名]
# 或者: from pip._internal.utils.temp_dir.TempDirectory import create [as 别名]
class RequirementTracker(object):

    def __init__(self):
        # type: () -> None
        self._root = os.environ.get('PIP_REQ_TRACKER')
        if self._root is None:
            self._temp_dir = TempDirectory(delete=False, kind='req-tracker')
            self._temp_dir.create()
            self._root = os.environ['PIP_REQ_TRACKER'] = self._temp_dir.path
            logger.debug('Created requirements tracker %r', self._root)
        else:
            self._temp_dir = None
            logger.debug('Re-using requirements tracker %r', self._root)
        self._entries = set()  # type: Set[InstallRequirement]

    def __enter__(self):
        return self

    def __exit__(self, exc_type, exc_val, exc_tb):
        self.cleanup()

    def _entry_path(self, link):
        # type: (Link) -> str
        hashed = hashlib.sha224(link.url_without_fragment.encode()).hexdigest()
        return os.path.join(self._root, hashed)

    def add(self, req):
        # type: (InstallRequirement) -> None
        link = req.link
        info = str(req)
        entry_path = self._entry_path(link)
        try:
            with open(entry_path) as fp:
                # Error, these's already a build in progress.
                raise LookupError('%s is already being built: %s'
                                  % (link, fp.read()))
        except IOError as e:
            if e.errno != errno.ENOENT:
                raise
            assert req not in self._entries
            with open(entry_path, 'w') as fp:
                fp.write(info)
            self._entries.add(req)
            logger.debug('Added %s to build tracker %r', req, self._root)

    def remove(self, req):
        # type: (InstallRequirement) -> None
        link = req.link
        self._entries.remove(req)
        os.unlink(self._entry_path(link))
        logger.debug('Removed %s from build tracker %r', req, self._root)

    def cleanup(self):
        # type: () -> None
        for req in set(self._entries):
            self.remove(req)
        remove = self._temp_dir is not None
        if remove:
            self._temp_dir.cleanup()
        logger.debug('%s build tracker %r',
                     'Removed' if remove else 'Cleaned',
                     self._root)

    @contextlib.contextmanager
    def track(self, req):
        # type: (InstallRequirement) -> Iterator[None]
        self.add(req)
        yield
        self.remove(req)

# 需要导入模块: from pip._internal.utils.temp_dir import TempDirectory [as 别名]
# 或者: from pip._internal.utils.temp_dir.TempDirectory import create [as 别名]

#.........这里部分代码省略.........
        if link and link.hash:
            good_hashes.setdefault(link.hash_name, []).append(link.hash)
        return Hashes(good_hashes)

    def from_path(self):
        # type: () -> Optional[str]
        """Format a nice indicator to show where this "comes from"
        """
        if self.req is None:
            return None
        s = str(self.req)
        if self.comes_from:
            if isinstance(self.comes_from, six.string_types):
                comes_from = self.comes_from
            else:
                comes_from = self.comes_from.from_path()
            if comes_from:
                s += '->' + comes_from
        return s

    def build_location(self, build_dir):
        # type: (str) -> Optional[str]
        assert build_dir is not None
        if self._temp_build_dir.path is not None:
            return self._temp_build_dir.path
        if self.req is None:
            # for requirement via a path to a directory: the name of the
            # package is not available yet so we create a temp directory
            # Once run_egg_info will have run, we'll be able
            # to fix it via _correct_build_location
            # Some systems have /tmp as a symlink which confuses custom
            # builds (such as numpy). Thus, we ensure that the real path
            # is returned.
            self._temp_build_dir.create()
            self._ideal_build_dir = build_dir

            return self._temp_build_dir.path
        if self.editable:
            name = self.name.lower()
        else:
            name = self.name
        # FIXME: Is there a better place to create the build_dir? (hg and bzr
        # need this)
        if not os.path.exists(build_dir):
            logger.debug('Creating directory %s', build_dir)
            _make_build_dir(build_dir)
        return os.path.join(build_dir, name)

    def _correct_build_location(self):
        # type: () -> None
        """Move self._temp_build_dir to self._ideal_build_dir/self.req.name

        For some requirements (e.g. a path to a directory), the name of the
        package is not available until we run egg_info, so the build_location
        will return a temporary directory and store the _ideal_build_dir.

        This is only called by self.run_egg_info to fix the temporary build
        directory.
        """
        if self.source_dir is not None:
            return
        assert self.req is not None
        assert self._temp_build_dir.path
        assert (self._ideal_build_dir is not None and
                self._ideal_build_dir.path)  # type: ignore
        old_location = self._temp_build_dir.path

# 需要导入模块: from pip._internal.utils.temp_dir import TempDirectory [as 别名]
# 或者: from pip._internal.utils.temp_dir.TempDirectory import create [as 别名]
    def run(self, options, args):
        cmdoptions.check_install_build_global(options)

        upgrade_strategy = "to-satisfy-only"
        if options.upgrade:
            upgrade_strategy = options.upgrade_strategy

        if options.build_dir:
            options.build_dir = os.path.abspath(options.build_dir)

        options.src_dir = os.path.abspath(options.src_dir)
        install_options = options.install_options or []
        if options.use_user_site:
            if options.prefix_path:
                raise CommandError(
                    "Can not combine '--user' and '--prefix' as they imply "
                    "different installation locations"
                )
            if virtualenv_no_global():
                raise InstallationError(
                    "Can not perform a '--user' install. User site-packages "
                    "are not visible in this virtualenv."
                )
            install_options.append('--user')
            install_options.append('--prefix=')

        target_temp_dir = TempDirectory(kind="target")
        if options.target_dir:
            options.ignore_installed = True
            options.target_dir = os.path.abspath(options.target_dir)
            if (os.path.exists(options.target_dir) and not
                    os.path.isdir(options.target_dir)):
                raise CommandError(
                    "Target path exists but is not a directory, will not "
                    "continue."
                )

            # Create a target directory for using with the target option
            target_temp_dir.create()
            install_options.append('--home=' + target_temp_dir.path)

        global_options = options.global_options or []

        with self._build_session(options) as session:
            finder = self._build_package_finder(options, session)
            build_delete = (not (options.no_clean or options.build_dir))
            wheel_cache = WheelCache(options.cache_dir, options.format_control)

            if options.cache_dir and not check_path_owner(options.cache_dir):
                logger.warning(
                    "The directory '%s' or its parent directory is not owned "
                    "by the current user and caching wheels has been "
                    "disabled. check the permissions and owner of that "
                    "directory. If executing pip with sudo, you may want "
                    "sudo's -H flag.",
                    options.cache_dir,
                )
                options.cache_dir = None

            with TempDirectory(
                options.build_dir, delete=build_delete, kind="install"
            ) as directory:
                requirement_set = RequirementSet(
                    require_hashes=options.require_hashes,
                )

                try:
                    self.populate_requirement_set(
                        requirement_set, args, options, finder, session,
                        self.name, wheel_cache
                    )
                    preparer = RequirementPreparer(
                        build_dir=directory.path,
                        src_dir=options.src_dir,
                        download_dir=None,
                        wheel_download_dir=None,
                        progress_bar=options.progress_bar,
                        build_isolation=options.build_isolation,
                    )

                    resolver = Resolver(
                        preparer=preparer,
                        finder=finder,
                        session=session,
                        wheel_cache=wheel_cache,
                        use_user_site=options.use_user_site,
                        upgrade_strategy=upgrade_strategy,
                        force_reinstall=options.force_reinstall,
                        ignore_dependencies=options.ignore_dependencies,
                        ignore_requires_python=options.ignore_requires_python,
                        ignore_installed=options.ignore_installed,
                        isolated=options.isolated_mode,
                    )
                    resolver.resolve(requirement_set)

                    protect_pip_from_modification_on_windows(
                        modifying_pip=requirement_set.has_requirement("pip")
                    )

                    # If caching is disabled or wheel is not installed don't
#.........这里部分代码省略.........

# 需要导入模块: from pip._internal.utils.temp_dir import TempDirectory [as 别名]
# 或者: from pip._internal.utils.temp_dir.TempDirectory import create [as 别名]
class BuildEnvironment(object):
    """Creates and manages an isolated environment to install build deps
    """

    def __init__(self):
        self._temp_dir = TempDirectory(kind="build-env")
        self._temp_dir.create()

    @property
    def path(self):
        return self._temp_dir.path

    def __enter__(self):
        self.save_path = os.environ.get('PATH', None)
        self.save_pythonpath = os.environ.get('PYTHONPATH', None)
        self.save_nousersite = os.environ.get('PYTHONNOUSERSITE', None)

        install_scheme = 'nt' if (os.name == 'nt') else 'posix_prefix'
        install_dirs = get_paths(install_scheme, vars={
            'base': self.path,
            'platbase': self.path,
        })

        scripts = install_dirs['scripts']
        if self.save_path:
            os.environ['PATH'] = scripts + os.pathsep + self.save_path
        else:
            os.environ['PATH'] = scripts + os.pathsep + os.defpath

        # Note: prefer distutils' sysconfig to get the
        # library paths so PyPy is correctly supported.
        purelib = get_python_lib(plat_specific=0, prefix=self.path)
        platlib = get_python_lib(plat_specific=1, prefix=self.path)
        if purelib == platlib:
            lib_dirs = purelib
        else:
            lib_dirs = purelib + os.pathsep + platlib
        if self.save_pythonpath:
            os.environ['PYTHONPATH'] = lib_dirs + os.pathsep + \
                self.save_pythonpath
        else:
            os.environ['PYTHONPATH'] = lib_dirs

        os.environ['PYTHONNOUSERSITE'] = '1'

        return self.path

    def __exit__(self, exc_type, exc_val, exc_tb):
        def restore_var(varname, old_value):
            if old_value is None:
                os.environ.pop(varname, None)
            else:
                os.environ[varname] = old_value

        restore_var('PATH', self.save_path)
        restore_var('PYTHONPATH', self.save_pythonpath)
        restore_var('PYTHONNOUSERSITE', self.save_nousersite)

    def cleanup(self):
        self._temp_dir.cleanup()

    def missing_requirements(self, reqs):
        """Return a list of the requirements from reqs that are not present
        """
        missing = []
        with self:
            ws = WorkingSet(os.environ["PYTHONPATH"].split(os.pathsep))
            for req in reqs:
                try:
                    if ws.find(Requirement.parse(req)) is None:
                        missing.append(req)
                except VersionConflict:
                    missing.append(req)
            return missing

    def install_requirements(self, finder, requirements, message):
        args = [
            sys.executable, '-m', 'pip', 'install', '--ignore-installed',
            '--no-user', '--prefix', self.path, '--no-warn-script-location',
        ]
        if logger.getEffectiveLevel() <= logging.DEBUG:
            args.append('-v')
        for format_control in ('no_binary', 'only_binary'):
            formats = getattr(finder.format_control, format_control)
            args.extend(('--' + format_control.replace('_', '-'),
                         ','.join(sorted(formats or {':none:'}))))
        if finder.index_urls:
            args.extend(['-i', finder.index_urls[0]])
            for extra_index in finder.index_urls[1:]:
                args.extend(['--extra-index-url', extra_index])
        else:
            args.append('--no-index')
        for link in finder.find_links:
            args.extend(['--find-links', link])
        for _, host, _ in finder.secure_origins:
            args.extend(['--trusted-host', host])
        if finder.allow_all_prereleases:
            args.append('--pre')
        if finder.process_dependency_links:
            args.append('--process-dependency-links')
#.........这里部分代码省略.........

# 需要导入模块: from pip._internal.utils.temp_dir import TempDirectory [as 别名]
# 或者: from pip._internal.utils.temp_dir.TempDirectory import create [as 别名]
class BuildEnvironment(object):
    """Creates and manages an isolated environment to install build deps
    """

    def __init__(self):
        # type: () -> None
        self._temp_dir = TempDirectory(kind="build-env")
        self._temp_dir.create()

        self._prefixes = OrderedDict((
            (name, _Prefix(os.path.join(self._temp_dir.path, name)))
            for name in ('normal', 'overlay')
        ))

        self._bin_dirs = []  # type: List[str]
        self._lib_dirs = []  # type: List[str]
        for prefix in reversed(list(self._prefixes.values())):
            self._bin_dirs.append(prefix.bin_dir)
            self._lib_dirs.extend(prefix.lib_dirs)

        # Customize site to:
        # - ensure .pth files are honored
        # - prevent access to system site packages
        system_sites = {
            os.path.normcase(site) for site in (
                get_python_lib(plat_specific=False),
                get_python_lib(plat_specific=True),
            )
        }
        self._site_dir = os.path.join(self._temp_dir.path, 'site')
        if not os.path.exists(self._site_dir):
            os.mkdir(self._site_dir)
        with open(os.path.join(self._site_dir, 'sitecustomize.py'), 'w') as fp:
            fp.write(textwrap.dedent(
                '''
                import os, site, sys

                # First, drop system-sites related paths.
                original_sys_path = sys.path[:]
                known_paths = set()
                for path in {system_sites!r}:
                    site.addsitedir(path, known_paths=known_paths)
                system_paths = set(
                    os.path.normcase(path)
                    for path in sys.path[len(original_sys_path):]
                )
                original_sys_path = [
                    path for path in original_sys_path
                    if os.path.normcase(path) not in system_paths
                ]
                sys.path = original_sys_path

                # Second, add lib directories.
                # ensuring .pth file are processed.
                for path in {lib_dirs!r}:
                    assert not path in sys.path
                    site.addsitedir(path)
                '''
            ).format(system_sites=system_sites, lib_dirs=self._lib_dirs))

    def __enter__(self):
        self._save_env = {
            name: os.environ.get(name, None)
            for name in ('PATH', 'PYTHONNOUSERSITE', 'PYTHONPATH')
        }

        path = self._bin_dirs[:]
        old_path = self._save_env['PATH']
        if old_path:
            path.extend(old_path.split(os.pathsep))

        pythonpath = [self._site_dir]

        os.environ.update({
            'PATH': os.pathsep.join(path),
            'PYTHONNOUSERSITE': '1',
            'PYTHONPATH': os.pathsep.join(pythonpath),
        })

    def __exit__(self, exc_type, exc_val, exc_tb):
        for varname, old_value in self._save_env.items():
            if old_value is None:
                os.environ.pop(varname, None)
            else:
                os.environ[varname] = old_value

    def cleanup(self):
        # type: () -> None
        self._temp_dir.cleanup()

    def check_requirements(self, reqs):
        # type: (Iterable[str]) -> Tuple[Set[Tuple[str, str]], Set[str]]
        """Return 2 sets:
            - conflicting requirements: set of (installed, wanted) reqs tuples
            - missing requirements: set of reqs
        """
        missing = set()
        conflicting = set()
        if reqs:
            ws = WorkingSet(self._lib_dirs)
#.........这里部分代码省略.........

# 需要导入模块: from pip._internal.utils.temp_dir import TempDirectory [as 别名]
# 或者: from pip._internal.utils.temp_dir.TempDirectory import create [as 别名]

#.........这里部分代码省略.........
        """Return whether I am pinned to an exact version.

        For example, some-package==1.2 is pinned; some-package>1.2 is not.
        """
        specifiers = self.specifier
        return (len(specifiers) == 1 and
                next(iter(specifiers)).operator in {'==', '==='})

    def from_path(self):
        if self.req is None:
            return None
        s = str(self.req)
        if self.comes_from:
            if isinstance(self.comes_from, six.string_types):
                comes_from = self.comes_from
            else:
                comes_from = self.comes_from.from_path()
            if comes_from:
                s += '->' + comes_from
        return s

    def build_location(self, build_dir):
        assert build_dir is not None
        if self._temp_build_dir.path is not None:
            return self._temp_build_dir.path
        if self.req is None:
            # for requirement via a path to a directory: the name of the
            # package is not available yet so we create a temp directory
            # Once run_egg_info will have run, we'll be able
            # to fix it via _correct_build_location
            # Some systems have /tmp as a symlink which confuses custom
            # builds (such as numpy). Thus, we ensure that the real path
            # is returned.
            self._temp_build_dir.create()
            self._ideal_build_dir = build_dir

            return self._temp_build_dir.path
        if self.editable:
            name = self.name.lower()
        else:
            name = self.name
        # FIXME: Is there a better place to create the build_dir? (hg and bzr
        # need this)
        if not os.path.exists(build_dir):
            logger.debug('Creating directory %s', build_dir)
            _make_build_dir(build_dir)
        return os.path.join(build_dir, name)

    def _correct_build_location(self):
        """Move self._temp_build_dir to self._ideal_build_dir/self.req.name

        For some requirements (e.g. a path to a directory), the name of the
        package is not available until we run egg_info, so the build_location
        will return a temporary directory and store the _ideal_build_dir.

        This is only called by self.egg_info_path to fix the temporary build
        directory.
        """
        if self.source_dir is not None:
            return
        assert self.req is not None
        assert self._temp_build_dir.path
        assert self._ideal_build_dir.path
        old_location = self._temp_build_dir.path
        self._temp_build_dir.path = None

# 需要导入模块: from pip._internal.utils.temp_dir import TempDirectory [as 别名]
# 或者: from pip._internal.utils.temp_dir.TempDirectory import create [as 别名]
    def run(self, options, args):
        cmdoptions.check_install_build_global(options)
        upgrade_strategy = "to-satisfy-only"
        if options.upgrade:
            upgrade_strategy = options.upgrade_strategy

        if options.build_dir:
            options.build_dir = os.path.abspath(options.build_dir)

        cmdoptions.check_dist_restriction(options, check_target=True)

        if options.python_version:
            python_versions = [options.python_version]
        else:
            python_versions = None

        options.src_dir = os.path.abspath(options.src_dir)
        install_options = options.install_options or []
        if options.use_user_site:
            if options.prefix_path:
                raise CommandError(
                    "Can not combine '--user' and '--prefix' as they imply "
                    "different installation locations"
                )
            if virtualenv_no_global():
                raise InstallationError(
                    "Can not perform a '--user' install. User site-packages "
                    "are not visible in this virtualenv."
                )
            install_options.append('--user')
            install_options.append('--prefix=')

        target_temp_dir = TempDirectory(kind="target")
        if options.target_dir:
            options.ignore_installed = True
            options.target_dir = os.path.abspath(options.target_dir)
            if (os.path.exists(options.target_dir) and not
                    os.path.isdir(options.target_dir)):
                raise CommandError(
                    "Target path exists but is not a directory, will not "
                    "continue."
                )

            # Create a target directory for using with the target option
            target_temp_dir.create()
            install_options.append('--home=' + target_temp_dir.path)

        global_options = options.global_options or []

        with self._build_session(options) as session:
            finder = self._build_package_finder(
                options=options,
                session=session,
                platform=options.platform,
                python_versions=python_versions,
                abi=options.abi,
                implementation=options.implementation,
            )
            build_delete = (not (options.no_clean or options.build_dir))
            wheel_cache = WheelCache(options.cache_dir, options.format_control)

            if options.cache_dir and not check_path_owner(options.cache_dir):
                logger.warning(
                    "The directory '%s' or its parent directory is not owned "
                    "by the current user and caching wheels has been "
                    "disabled. check the permissions and owner of that "
                    "directory. If executing pip with sudo, you may want "
                    "sudo's -H flag.",
                    options.cache_dir,
                )
                options.cache_dir = None

            with RequirementTracker() as req_tracker, TempDirectory(
                options.build_dir, delete=build_delete, kind="install"
            ) as directory:
                requirement_set = RequirementSet(
                    require_hashes=options.require_hashes,
                    check_supported_wheels=not options.target_dir,
                )

                try:
                    self.populate_requirement_set(
                        requirement_set, args, options, finder, session,
                        self.name, wheel_cache
                    )
                    preparer = RequirementPreparer(
                        build_dir=directory.path,
                        src_dir=options.src_dir,
                        download_dir=None,
                        wheel_download_dir=None,
                        progress_bar=options.progress_bar,
                        build_isolation=options.build_isolation,
                        req_tracker=req_tracker,
                    )

                    resolver = Resolver(
                        preparer=preparer,
                        finder=finder,
                        session=session,
                        wheel_cache=wheel_cache,
#.........这里部分代码省略.........

# 需要导入模块: from pip._internal.utils.temp_dir import TempDirectory [as 别名]
# 或者: from pip._internal.utils.temp_dir.TempDirectory import create [as 别名]
class BuildEnvironment(object):
    """Creates and manages an isolated environment to install build deps
    """

    def __init__(self, no_clean):
        self._temp_dir = TempDirectory(kind="build-env")
        self._no_clean = no_clean

    @property
    def path(self):
        return self._temp_dir.path

    def __enter__(self):
        self._temp_dir.create()

        self.save_path = os.environ.get('PATH', None)
        self.save_pythonpath = os.environ.get('PYTHONPATH', None)
        self.save_nousersite = os.environ.get('PYTHONNOUSERSITE', None)

        install_scheme = 'nt' if (os.name == 'nt') else 'posix_prefix'
        install_dirs = get_paths(install_scheme, vars={
            'base': self.path,
            'platbase': self.path,
        })

        scripts = install_dirs['scripts']
        if self.save_path:
            os.environ['PATH'] = scripts + os.pathsep + self.save_path
        else:
            os.environ['PATH'] = scripts + os.pathsep + os.defpath

        # Note: prefer distutils' sysconfig to get the
        # library paths so PyPy is correctly supported.
        purelib = get_python_lib(plat_specific=0, prefix=self.path)
        platlib = get_python_lib(plat_specific=1, prefix=self.path)
        if purelib == platlib:
            lib_dirs = purelib
        else:
            lib_dirs = purelib + os.pathsep + platlib
        if self.save_pythonpath:
            os.environ['PYTHONPATH'] = lib_dirs + os.pathsep + \
                self.save_pythonpath
        else:
            os.environ['PYTHONPATH'] = lib_dirs

        os.environ['PYTHONNOUSERSITE'] = '1'

        return self.path

    def __exit__(self, exc_type, exc_val, exc_tb):
        if not self._no_clean:
            self._temp_dir.cleanup()

        def restore_var(varname, old_value):
            if old_value is None:
                os.environ.pop(varname, None)
            else:
                os.environ[varname] = old_value

        restore_var('PATH', self.save_path)
        restore_var('PYTHONPATH', self.save_pythonpath)
        restore_var('PYTHONNOUSERSITE', self.save_nousersite)

    def cleanup(self):
        self._temp_dir.cleanup()