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\00$\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95
59\A3R:\F3\CE"\B6\80\88\00\00i1u4ê\E9\F2á\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>C///</title>
</head>
"""
    babel.messages.mofile
    ~~~~~~~~~~~~~~~~~~~~~

    Writing of files in the ``gettext`` MO (machine object) format.

    :copyright: (c) 2013-2023 by the Babel Team.
    :license: BSD, see LICENSE for more details.
"""
from __future__ import annotations

import array
import struct
from typing import TYPE_CHECKING

from babel.messages.catalog import Catalog, Message

if TYPE_CHECKING:
    from _typeshed import SupportsRead, SupportsWrite

LE_MAGIC: int = 0x950412de
BE_MAGIC: int = 0xde120495


def read_mo(fileobj: SupportsRead[bytes]) -> Catalog:
    """Read a binary MO file from the given file-like object and return a
    corresponding `Catalog` object.

    :param fileobj: the file-like object to read the MO file from

    :note: The implementation of this function is heavily based on the
           ``GNUTranslations._parse`` method of the ``gettext`` module in the
           standard library.
    """
    catalog = Catalog()
    headers = {}

    filename = getattr(fileobj, 'name', '')

    buf = fileobj.read()
    buflen = len(buf)
    unpack = struct.unpack

    # Parse the .mo file header, which consists of 5 little endian 32
    # bit words.
    magic = unpack('<I', buf[:4])[0]  # Are we big endian or little endian?
    if magic == LE_MAGIC:
        version, msgcount, origidx, transidx = unpack('<4I', buf[4:20])
        ii = '<II'
    elif magic == BE_MAGIC:
        version, msgcount, origidx, transidx = unpack('>4I', buf[4:20])
        ii = '>II'
    else:
        raise OSError(0, 'Bad magic number', filename)

    # Now put all messages from the .mo file buffer into the catalog
    # dictionary
    for _i in range(msgcount):
        mlen, moff = unpack(ii, buf[origidx:origidx + 8])
        mend = moff + mlen
        tlen, toff = unpack(ii, buf[transidx:transidx + 8])
        tend = toff + tlen
        if mend < buflen and tend < buflen:
            msg = buf[moff:mend]
            tmsg = buf[toff:tend]
        else:
            raise OSError(0, 'File is corrupt', filename)

        # See if we're looking at GNU .mo conventions for metadata
        if mlen == 0:
            # Catalog description
            lastkey = key = None
            for item in tmsg.splitlines():
                item = item.strip()
                if not item:
                    continue
                if b':' in item:
                    key, value = item.split(b':', 1)
                    lastkey = key = key.strip().lower()
                    headers[key] = value.strip()
                elif lastkey:
                    headers[lastkey] += b'\n' + item

        if b'\x04' in msg:  # context
            ctxt, msg = msg.split(b'\x04')
        else:
            ctxt = None

        if b'\x00' in msg:  # plural forms
            msg = msg.split(b'\x00')
            tmsg = tmsg.split(b'\x00')
            if catalog.charset:
                msg = [x.decode(catalog.charset) for x in msg]
                tmsg = [x.decode(catalog.charset) for x in tmsg]
        else:
            if catalog.charset:
                msg = msg.decode(catalog.charset)
                tmsg = tmsg.decode(catalog.charset)
        catalog[msg] = Message(msg, tmsg, context=ctxt)

        # advance to next entry in the seek tables
        origidx += 8
        transidx += 8

    catalog.mime_headers = headers.items()
    return catalog


def write_mo(fileobj: SupportsWrite[bytes], catalog: Catalog, use_fuzzy: bool = False) -> None:
    """Write a catalog to the specified file-like object using the GNU MO file
    format.

    >>> import sys
    >>> from babel.messages import Catalog
    >>> from gettext import GNUTranslations
    >>> from io import BytesIO

    >>> catalog = Catalog(locale='en_US')
    >>> catalog.add('foo', 'Voh')
    <Message ...>
    >>> catalog.add((u'bar', u'baz'), (u'Bahr', u'Batz'))
    <Message ...>
    >>> catalog.add('fuz', 'Futz', flags=['fuzzy'])
    <Message ...>
    >>> catalog.add('Fizz', '')
    <Message ...>
    >>> catalog.add(('Fuzz', 'Fuzzes'), ('', ''))
    <Message ...>
    >>> buf = BytesIO()

    >>> write_mo(buf, catalog)
    >>> x = buf.seek(0)
    >>> translations = GNUTranslations(fp=buf)
    >>> if sys.version_info[0] >= 3:
    ...     translations.ugettext = translations.gettext
    ...     translations.ungettext = translations.ngettext
    >>> translations.ugettext('foo')
    u'Voh'
    >>> translations.ungettext('bar', 'baz', 1)
    u'Bahr'
    >>> translations.ungettext('bar', 'baz', 2)
    u'Batz'
    >>> translations.ugettext('fuz')
    u'fuz'
    >>> translations.ugettext('Fizz')
    u'Fizz'
    >>> translations.ugettext('Fuzz')
    u'Fuzz'
    >>> translations.ugettext('Fuzzes')
    u'Fuzzes'

    :param fileobj: the file-like object to write to
    :param catalog: the `Catalog` instance
    :param use_fuzzy: whether translations marked as "fuzzy" should be included
                      in the output
    """
    messages = list(catalog)
    messages[1:] = [m for m in messages[1:]
                    if m.string and (use_fuzzy or not m.fuzzy)]
    messages.sort()

    ids = strs = b''
    offsets = []

    for message in messages:
        # For each string, we need size and file offset.  Each string is NUL
        # terminated; the NUL does not count into the size.
        if message.pluralizable:
            msgid = b'\x00'.join([
                msgid.encode(catalog.charset) for msgid in message.id
            ])
            msgstrs = []
            for idx, string in enumerate(message.string):
                if not string:
                    msgstrs.append(message.id