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File Content: `localedata.py`

# -*- coding: utf-8 -*-
"""
    babel.localedata
    ~~~~~~~~~~~~~~~~

    Low-level locale data access.

    :note: The `Locale` class, which uses this module under the hood, provides a
           more convenient interface for accessing the locale data.

    :copyright: (c) 2013 by the Babel Team.
    :license: BSD, see LICENSE for more details.
"""

import os
import re
import sys
import threading
from collections import MutableMapping
from itertools import chain
import sys

from babel._compat import pickle, string_types


def get_base_dir():
    if getattr(sys, 'frozen', False) and getattr(sys, '_MEIPASS', None):
        # we are running in a |PyInstaller| bundle
        basedir = sys._MEIPASS
    else:
        # we are running in a normal Python environment
        basedir = os.path.dirname(__file__)
    return basedir

_cache = {}
_cache_lock = threading.RLock()
_dirname = os.path.join(get_base_dir(), 'locale-data')
_windows_reserved_name_re = re.compile("^(con|prn|aux|nul|com[0-9]|lpt[0-9])$", re.I)


def normalize_locale(name):
    """Normalize a locale ID by stripping spaces and apply proper casing.

    Returns the normalized locale ID string or `None` if the ID is not
    recognized.
    """
    if not name or not isinstance(name, string_types):
        return None
    name = name.strip().lower()
    for locale_id in chain.from_iterable([_cache, locale_identifiers()]):
        if name == locale_id.lower():
            return locale_id


def resolve_locale_filename(name):
    """
    Resolve a locale identifier to a `.dat` path on disk.
    """

    # Clean up any possible relative paths.
    name = os.path.basename(name)

    # Ensure we're not left with one of the Windows reserved names.
    if sys.platform == "win32" and _windows_reserved_name_re.match(os.path.splitext(name)[0]):
        raise ValueError("Name %s is invalid on Windows" % name)

    # Build the path.
    return os.path.join(_dirname, '%s.dat' % name)


def exists(name):
    """Check whether locale data is available for the given locale.

    Returns `True` if it exists, `False` otherwise.

    :param name: the locale identifier string
    """
    if not name or not isinstance(name, string_types):
        return False
    if name in _cache:
        return True
    file_found = os.path.exists(resolve_locale_filename(name))
    return True if file_found else bool(normalize_locale(name))


def locale_identifiers():
    """Return a list of all locale identifiers for which locale data is
    available.

    .. versionadded:: 0.8.1

    :return: a list of locale identifiers (strings)
    """
    return [stem for stem, extension in [
        os.path.splitext(filename) for filename in os.listdir(_dirname)
    ] if extension == '.dat' and stem != 'root']


def load(name, merge_inherited=True):
    """Load the locale data for the given locale.

    The locale data is a dictionary that contains much of the data defined by
    the Common Locale Data Repository (CLDR). This data is stored as a
    collection of pickle files inside the ``babel`` package.

    >>> d = load('en_US')
    >>> d['languages']['sv']
    u'Swedish'

    Note that the results are cached, and subsequent requests for the same
    locale return the same dictionary:

    >>> d1 = load('en_US')
    >>> d2 = load('en_US')
    >>> d1 is d2
    True

    :param name: the locale identifier string (or "root")
    :param merge_inherited: whether the inherited data should be merged into
                            the data of the requested locale
    :raise `IOError`: if no locale data file is found for the given locale
                      identifer, or one of the locales it inherits from
    """
    name = os.path.basename(name)
    _cache_lock.acquire()
    try:
        data = _cache.get(name)
        if not data:
            # Load inherited data
            if name == 'root' or not merge_inherited:
                data = {}
            else:
                from babel.core import get_global
                parent = get_global('parent_exceptions').get(name)
                if not parent:
                    parts = name.split('_')
                    if len(parts) == 1:
                        parent = 'root'
                    else:
                        parent = '_'.join(parts[:-1])
                data = load(parent).copy()
            filename = resolve_locale_filename(name)
            with open(filename, 'rb') as fileobj:
                if name != 'root' and merge_inherited:
                    merge(data, pickle.load(fileobj))
                else:
                    data = pickle.load(fileobj)
            _cache[name] = data
        return data
    finally:
        _cache_lock.release()


def merge(dict1, dict2):
    """Merge the data from `dict2` into the `dict1` dictionary, making copies
    of nested dictionaries.

    >>> d = {1: 'foo', 3: 'baz'}
    >>> merge(d, {1: 'Foo', 2: 'Bar'})
    >>> sorted(d.items())
    [(1, 'Foo'), (2, 'Bar'), (3, 'baz')]

    :param dict1: the dictionary to merge into
    :param dict2: the dictionary containing the data that should be merged
    """
    for key, val2 in dict2.items():
        if val2 is not None:
            val1 = dict1.get(key)
            if isinstance(val2, dict):
                if val1 is None:
                    val1 = {}
                if isinstance(val1, Alias):
                    val1 = (val1, val2)
                elif isinstance(val1, tuple):
                    alias, others = val1
                    others = others.copy()
                    merge(others, val2)
                    val1 = (alias, others)
                else:
                    val1 = val1.copy()
                    merge(val1, val2)
            else:
                val1 = val2
            dict1[key] = val1


class Alias(object):
    """Representation of an alias in the locale data.

    An alias is a value that refers to some other part of the locale data,
    as specified by the `keys`.
    """

    def __init__(self, keys):
        self.keys = tuple(keys)

    def __repr__(self):
        return '<%s %r>' % (type(self).__name__, self.keys)

    def resolve(self, data):
        """Resolve the alias based on the given data.

        This is done recursively, so if one alias resolves to a second alias,
        that second alias will also be resolved.

        :param data: the locale data
        :type data: `dict`
        """
        base = data
        for key in self.keys:
            data = data[key]
        if isinstance(data, Alias):
            data = data.resolve(base)
        elif isinstance(data, tuple):
            alias, others = data
            data = alias.resolve(base)
        return data


class LocaleDataDict(MutableMapping):
    """Dictionary wrapper that automatically resolves aliases to the actual
    values.
    """

    def __init__(self, data, base=None):
        self._data = data
        if base is None:
            base = data
        self.base = base

    def __len__(self):
        return len(self._data)

    def __iter__(self):
        return iter(self._data)

    def __getitem__(self, key):
        orig = val = self._data[key]
        if isinstance(val, Alias):  # resolve an alias
            val = val.resolve(self.base)
        if isinstance(val, tuple):  # Merge a partial dict with an alias
            alias, others = val
            val = alias.resolve(self.base).copy()
            merge(val, others)
        if type(val) is dict:  # Return a nested alias-resolving dict
            val = LocaleDataDict(val, base=self.base)
        if val is not orig:
            self._data[key] = val
        return val

    def __setitem__(self, key, value):
        self._data[key] = value

    def __delitem__(self, key):
        del self._data[key]

    def copy(self):
        return LocaleDataDict(self._data.copy(), base=self.base)
Name	Size	Permission
__pycache__	---	0755
locale-data	---	0755
localtime	---	0755
messages	---	0755
__init__.py	709 bytes	0644
_compat.py	1423 bytes	0644
core.py	36838 bytes	0644
dates.py	66932 bytes	0644
global.dat	223761 bytes	0644
languages.py	2748 bytes	0644
lists.py	1271 bytes	0644
localedata.py	7873 bytes	0644
numbers.py	26043 bytes	0644
plural.py	21312 bytes	0644
support.py	22297 bytes	0644
units.py	11096 bytes	0644
util.py	8796 bytes	0644
File Content: localedata.py

File Content: `localedata.py`
