ꦫꦣꦺꦤ꧀ꦄꦤ꧀ꦠꦱꦺꦤ

PATH: usr / lib64 / python3.6 / encodings

""" Standard "encodings" Package

Standard Python encoding modules are stored in this package
    directory.

Codec modules must have names corresponding to normalized encoding
    names as defined in the normalize_encoding() function below, e.g.
    'utf-8' must be implemented by the module 'utf_8.py'.

Each codec module must export the following interface:

* getregentry() -> codecs.CodecInfo object
    The getregentry() API must return a CodecInfo object with encoder, decoder,
    incrementalencoder, incrementaldecoder, streamwriter and streamreader
    atttributes which adhere to the Python Codec Interface Standard.

In addition, a module may optionally also define the following
    APIs which are then used by the package's codec search function:

* getaliases() -> sequence of encoding name strings to use as aliases

Alias names returned by getaliases() must be normalized encoding
    names as defined by normalize_encoding().

Written by Marc-Andre Lemburg (mal@lemburg.com).

"""#"

import codecs
import sys
from . import aliases

_cache = {}
_unknown = '--unknown--'
_import_tail = ['*']
_aliases = aliases.aliases

class CodecRegistryError(LookupError, SystemError):
    pass

def normalize_encoding(encoding):

""" Normalize an encoding name.

Normalization works as follows: all non-alphanumeric
        characters except the dot used for Python package names are
        collapsed and replaced with a single underscore, e.g. '  -;#'
        becomes '_'. Leading and trailing underscores are removed.

Note that encoding names should be ASCII only; if they do use
        non-ASCII characters, these must be Latin-1 compatible.

"""
    if isinstance(encoding, bytes):
        encoding = str(encoding, "ascii")

chars = []
    punct = False
    for c in encoding:
        if c.isalnum() or c == '.':
            if punct and chars:
                chars.append('_')
            chars.append(c)
            punct = False
        else:
            punct = True
    return ''.join(chars)

def search_function(encoding):

# Cache lookup
    entry = _cache.get(encoding, _unknown)
    if entry is not _unknown:
        return entry

# Import the module:
    #
    # First try to find an alias for the normalized encoding
    # name and lookup the module using the aliased name, then try to
    # lookup the module using the standard import scheme, i.e. first
    # try in the encodings package, then at top-level.
    #
    norm_encoding = normalize_encoding(encoding)
    aliased_encoding = _aliases.get(norm_encoding) or \
                       _aliases.get(norm_encoding.replace('.', '_'))
    if aliased_encoding is not None:
        modnames = [aliased_encoding,
                    norm_encoding]
    else:
        modnames = [norm_encoding]
    for modname in modnames:
        if not modname or '.' in modname:
            continue
        try:
            # Import is absolute to prevent the possibly malicious import of a
            # module with side-effects that is not in the 'encodings' package.
            mod = __import__('encodings.' + modname, fromlist=_import_tail,
                             level=0)
        except ImportError:
            # ImportError may occur because 'encodings.(modname)' does not exist,
            # or because it imports a name that does not exist (see mbcs and oem)
            pass
        else:
            break
    else:
        mod = None

try:
        getregentry = mod.getregentry
    except AttributeError:
        # Not a codec module
        mod = None

if mod is None:
        # Cache misses
        _cache[encoding] = None
        return None

# Now ask the module for the registry entry
    entry = getregentry()
    if not isinstance(entry, codecs.CodecInfo):
        if not 4 <= len(entry) <= 7:
            raise CodecRegistryError('module "%s" (%s) failed to register'
                                     % (mod.__name__, mod.__file__))
        if not callable(entry[0]) or not callable(entry[1]) or \
           (entry[2] is not None and not callable(entry[2])) or \
           (entry[3] is not None and not callable(entry[3])) or \
           (len(entry) > 4 and entry[4] is not None and not callable(entry[4])) or \
           (len(entry) > 5 and entry[5] is not None and not callable(entry[5])):
            raise CodecRegistryError('incompatible codecs in module "%s" (%s)'
                                     % (mod.__name__, mod.__file__))
        if len(entry)<7 or entry[6] is None:
            entry += (None,)*(6-len(entry)) + (mod.__name__.split(".", 1)[1],)
        entry = codecs.CodecInfo(*entry)

# Cache the codec registry entry
    _cache[encoding] = entry

# Register its aliases (without overwriting previously registered
    # aliases)
    try:
        codecaliases = mod.getaliases()
    except AttributeError:
        pass
    else:
        for alias in codecaliases:
            if alias not in _aliases:
                _aliases[alias] = modname

# Return the registry entry
    return entry

# Register the search_function in the Python codec registry
codecs.register(search_function)

if sys.platform == 'win32':
    def _alias_mbcs(encoding):
        try:
            import _bootlocale
            if encoding == _bootlocale.getpreferredencoding(False):
                import encodings.mbcs
                return encodings.mbcs.getregentry()
        except ImportError:
            # Imports may fail while we are shutting down
            pass

codecs.register(_alias_mbcs)

[-] palmos.py [edit]
[-] iso8859_3.py [edit]
[-] kz1048.py [edit]
[-] euc_jis_2004.py [edit]
[-] iso8859_15.py [edit]
[-] cp1256.py [edit]
[-] mac_croatian.py [edit]
[-] raw_unicode_escape.py [edit]
[-] unicode_escape.py [edit]
[-] utf_32_be.py [edit]
[-] mac_roman.py [edit]
[-] iso8859_14.py [edit]
[-] cp862.py [edit]
[-] charmap.py [edit]
[-] iso2022_jp_2004.py [edit]
[-] iso8859_5.py [edit]
[-] cp1251.py [edit]
[-] iso8859_10.py [edit]
[-] koi8_u.py [edit]
[-] hz.py [edit]
[-] oem.py [edit]
[-] cp037.py [edit]
[-] euc_jisx0213.py [edit]
[-] utf_32_le.py [edit]
[-] cp1026.py [edit]
[-] cp65001.py [edit]
[-] iso2022_jp_ext.py [edit]
[-] iso8859_11.py [edit]
[-] latin_1.py [edit]
[-] utf_32.py [edit]
[-] quopri_codec.py [edit]
[+] ..
[-] tis_620.py [edit]
[-] rot_13.py [edit]
[-] cp874.py [edit]
[-] shift_jis.py [edit]
[-] iso8859_2.py [edit]
[-] gb18030.py [edit]
[-] cp864.py [edit]
[-] cp875.py [edit]
[-] cp1125.py [edit]
[-] cp1254.py [edit]
[-] undefined.py [edit]
[-] iso8859_6.py [edit]
[-] cp1006.py [edit]
[-] cp860.py [edit]
[-] mac_farsi.py [edit]
[-] hex_codec.py [edit]
[-] mac_cyrillic.py [edit]
[-] cp1257.py [edit]
[-] ptcp154.py [edit]
[-] cp949.py [edit]
[-] cp861.py [edit]
[-] mac_arabic.py [edit]
[-] zlib_codec.py [edit]
[-] iso8859_8.py [edit]
[-] gb2312.py [edit]
[-] utf_8_sig.py [edit]
[-] gbk.py [edit]
[-] mac_centeuro.py [edit]
[-] big5hkscs.py [edit]
[-] mac_iceland.py [edit]
[-] base64_codec.py [edit]
[-] aliases.py [edit]
[-] iso8859_7.py [edit]
[-] cp424.py [edit]
[-] utf_16_le.py [edit]
[-] cp437.py [edit]
[-] iso8859_16.py [edit]
[-] cp866.py [edit]
[-] euc_kr.py [edit]
[-] cp500.py [edit]
[-] iso2022_jp_3.py [edit]
[-] cp1250.py [edit]
[-] cp869.py [edit]
[-] shift_jisx0213.py [edit]
[-] utf_8.py [edit]
[-] cp737.py [edit]
[+] __pycache__
[-] cp850.py [edit]
[-] iso2022_jp_1.py [edit]
[-] cp1255.py [edit]
[-] cp863.py [edit]
[-] cp858.py [edit]
[-] koi8_r.py [edit]
[-] mac_greek.py [edit]
[-] cp1253.py [edit]
[-] cp273.py [edit]
[-] euc_jp.py [edit]
[-] punycode.py [edit]
[-] ascii.py [edit]
[-] cp932.py [edit]
[-] shift_jis_2004.py [edit]
[-] bz2_codec.py [edit]
[-] utf_7.py [edit]
[-] cp855.py [edit]
[-] unicode_internal.py [edit]
[-] uu_codec.py [edit]
[-] utf_16.py [edit]
[-] koi8_t.py [edit]
[-] cp1258.py [edit]
[-] cp950.py [edit]
[-] cp857.py [edit]
[-] cp1140.py [edit]
[-] cp852.py [edit]
[-] hp_roman8.py [edit]
[-] iso8859_9.py [edit]
[-] idna.py [edit]
[-] __init__.py [edit]
[-] mac_turkish.py [edit]
[-] utf_16_be.py [edit]
[-] cp856.py [edit]
[-] cp720.py [edit]
[-] iso8859_4.py [edit]
[-] iso8859_13.py [edit]
[-] mbcs.py [edit]
[-] johab.py [edit]
[-] cp775.py [edit]
[-] iso2022_kr.py [edit]
[-] big5.py [edit]
[-] iso2022_jp.py [edit]
[-] iso8859_1.py [edit]
[-] iso2022_jp_2.py [edit]
[-] mac_romanian.py [edit]
[-] cp1252.py [edit]
[-] cp865.py [edit]
[-] mac_latin2.py [edit]