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File Content: `util.py`

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

    Various utility classes and functions.

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

import codecs
from datetime import timedelta, tzinfo
import os
import re
import textwrap
from babel._compat import izip, imap

missing = object()


def distinct(iterable):
    """Yield all items in an iterable collection that are distinct.

    Unlike when using sets for a similar effect, the original ordering of the
    items in the collection is preserved by this function.

    >>> print list(distinct([1, 2, 1, 3, 4, 4]))
    [1, 2, 3, 4]
    >>> print list(distinct('foobar'))
    ['f', 'o', 'b', 'a', 'r']

    :param iterable: the iterable collection providing the data
    """
    seen = set()
    for item in iter(iterable):
        if item not in seen:
            yield item
            seen.add(item)

# Regexp to match python magic encoding line
PYTHON_MAGIC_COMMENT_re = re.compile(
    br'[ \t\f]* \# .* coding[=:][ \t]*([-\w.]+)', re.VERBOSE)
def parse_encoding(fp):
    """Deduce the encoding of a source file from magic comment.

    It does this in the same way as the `Python interpreter`__

    .. __: http://docs.python.org/ref/encodings.html

    The ``fp`` argument should be a seekable file object.

    (From Jeff Dairiki)
    """
    pos = fp.tell()
    fp.seek(0)
    try:
        line1 = fp.readline()
        has_bom = line1.startswith(codecs.BOM_UTF8)
        if has_bom:
            line1 = line1[len(codecs.BOM_UTF8):]

        m = PYTHON_MAGIC_COMMENT_re.match(line1)
        if not m:
            try:
                import parser
                parser.suite(line1.decode('latin-1'))
            except (ImportError, SyntaxError):
                # Either it's a real syntax error, in which case the source is
                # not valid python source, or line2 is a continuation of line1,
                # in which case we don't want to scan line2 for a magic
                # comment.
                pass
            else:
                line2 = fp.readline()
                m = PYTHON_MAGIC_COMMENT_re.match(line2)

        if has_bom:
            if m:
                raise SyntaxError(
                    "python refuses to compile code with both a UTF8 "
                    "byte-order-mark and a magic encoding comment")
            return 'utf_8'
        elif m:
            return m.group(1).decode('latin-1')
        else:
            return None
    finally:
        fp.seek(pos)

def pathmatch(pattern, filename):
    """Extended pathname pattern matching.

    This function is similar to what is provided by the ``fnmatch`` module in
    the Python standard library, but:

     * can match complete (relative or absolute) path names, and not just file
       names, and
     * also supports a convenience pattern ("**") to match files at any
       directory level.

    Examples:

    >>> pathmatch('**.py', 'bar.py')
    True
    >>> pathmatch('**.py', 'foo/bar/baz.py')
    True
    >>> pathmatch('**.py', 'templates/index.html')
    False

    >>> pathmatch('**/templates/*.html', 'templates/index.html')
    True
    >>> pathmatch('**/templates/*.html', 'templates/foo/bar.html')
    False

    :param pattern: the glob pattern
    :param filename: the path name of the file to match against
    """
    symbols = {
        '?':   '[^/]',
        '?/':  '[^/]/',
        '*':   '[^/]+',
        '*/':  '[^/]+/',
        '**/': '(?:.+/)*?',
        '**':  '(?:.+/)*?[^/]+',
    }
    buf = []
    for idx, part in enumerate(re.split('([?*]+/?)', pattern)):
        if idx % 2:
            buf.append(symbols[part])
        elif part:
            buf.append(re.escape(part))
    match = re.match(''.join(buf) + '$', filename.replace(os.sep, '/'))
    return match is not None


class TextWrapper(textwrap.TextWrapper):
    wordsep_re = re.compile(
        r'(\s+|'                                  # any whitespace
        r'(?<=[\w\!\"\'\&\.\,\?])-{2,}(?=\w))'    # em-dash
    )


def wraptext(text, width=70, initial_indent='', subsequent_indent=''):
    """Simple wrapper around the ``textwrap.wrap`` function in the standard
    library. This version does not wrap lines on hyphens in words.

    :param text: the text to wrap
    :param width: the maximum line width
    :param initial_indent: string that will be prepended to the first line of
                           wrapped output
    :param subsequent_indent: string that will be prepended to all lines save
                              the first of wrapped output
    """
    wrapper = TextWrapper(width=width, initial_indent=initial_indent,
                          subsequent_indent=subsequent_indent,
                          break_long_words=False)
    return wrapper.wrap(text)


class odict(dict):
    """Ordered dict implementation.

    :see: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/107747
    """
    def __init__(self, data=None):
        dict.__init__(self, data or {})
        self._keys = list(dict.keys(self))

    def __delitem__(self, key):
        dict.__delitem__(self, key)
        self._keys.remove(key)

    def __setitem__(self, key, item):
        dict.__setitem__(self, key, item)
        if key not in self._keys:
            self._keys.append(key)

    def __iter__(self):
        return iter(self._keys)
    iterkeys = __iter__

    def clear(self):
        dict.clear(self)
        self._keys = []

    def copy(self):
        d = odict()
        d.update(self)
        return d

    def items(self):
        return zip(self._keys, self.values())

    def iteritems(self):
        return izip(self._keys, self.itervalues())

    def keys(self):
        return self._keys[:]

    def pop(self, key, default=missing):
        if default is missing:
            return dict.pop(self, key)
        elif key not in self:
            return default
        self._keys.remove(key)
        return dict.pop(self, key, default)

    def popitem(self, key):
        self._keys.remove(key)
        return dict.popitem(key)

    def setdefault(self, key, failobj = None):
        dict.setdefault(self, key, failobj)
        if key not in self._keys:
            self._keys.append(key)

    def update(self, dict):
        for (key, val) in dict.items():
            self[key] = val

    def values(self):
        return map(self.get, self._keys)

    def itervalues(self):
        return imap(self.get, self._keys)


try:
    relpath = os.path.relpath
except AttributeError:
    def relpath(path, start='.'):
        """Compute the relative path to one path from another.

        >>> relpath('foo/bar.txt', '').replace(os.sep, '/')
        'foo/bar.txt'
        >>> relpath('foo/bar.txt', 'foo').replace(os.sep, '/')
        'bar.txt'
        >>> relpath('foo/bar.txt', 'baz').replace(os.sep, '/')
        '../foo/bar.txt'
        """
        start_list = os.path.abspath(start).split(os.sep)
        path_list = os.path.abspath(path).split(os.sep)

        # Work out how much of the filepath is shared by start and path.
        i = len(os.path.commonprefix([start_list, path_list]))

        rel_list = [os.path.pardir] * (len(start_list) - i) + path_list[i:]
        return os.path.join(*rel_list)


class FixedOffsetTimezone(tzinfo):
    """Fixed offset in minutes east from UTC."""

    def __init__(self, offset, name=None):
        self._offset = timedelta(minutes=offset)
        if name is None:
            name = 'Etc/GMT+%d' % offset
        self.zone = name

    def __str__(self):
        return self.zone

    def __repr__(self):
        return '<FixedOffset "%s" %s>' % (self.zone, self._offset)

    def utcoffset(self, dt):
        return self._offset

    def tzname(self, dt):
        return self.zone

    def dst(self, dt):
        return ZERO


import pytz as _pytz
from babel import localtime

# Export the localtime functionality here because that's
# where it was in the past.
UTC = _pytz.utc
LOCALTZ = localtime.LOCALTZ
get_localzone = localtime.get_localzone

STDOFFSET = localtime.STDOFFSET
DSTOFFSET = localtime.DSTOFFSET
DSTDIFF = localtime.DSTDIFF
ZERO = localtime.ZERO
Name	Size	Permission
localedata	---	0755
localtime	---	0755
messages	---	0755
__init__.py	708 bytes	0644
__init__.pyc	951 bytes	0644
__init__.pyo	951 bytes	0644
_compat.py	1009 bytes	0644
_compat.pyc	2573 bytes	0644
_compat.pyo	2573 bytes	0644
core.py	30999 bytes	0644
core.pyc	33176 bytes	0644
core.pyo	33176 bytes	0644
dates.py	43083 bytes	0644
dates.pyc	43056 bytes	0644
dates.pyo	43000 bytes	0644
global.dat	90730 bytes	0644
localedata.py	6247 bytes	0644
localedata.pyc	7789 bytes	0644
localedata.pyo	7789 bytes	0644
numbers.py	19693 bytes	0644
numbers.pyc	19435 bytes	0644
numbers.pyo	19435 bytes	0644
plural.py	16021 bytes	0644
plural.pyc	20870 bytes	0644
plural.pyo	20870 bytes	0644
support.py	21812 bytes	0644
support.pyc	26593 bytes	0644
support.pyo	26593 bytes	0644
util.py	8167 bytes	0644
util.pyc	11305 bytes	0644
util.pyo	11305 bytes	0644
File Content: util.py

File Content: `util.py`
