mirror of https://github.com/python/cpython
Add IANA character set aliases to the encodings alias dictionary
and make alias lookup lazy. Note that only those IANA character set aliases were added for which we actually have codecs in the encodings package.
This commit is contained in:
Marc-André Lemburg
parent
e92e0a944e
commit
462004e90a
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@ -4,8 +4,8 @@
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directory.
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Codec modules must have names corresponding to standard lower-case
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encoding names with hyphens mapped to underscores, e.g. 'utf-8' is
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implemented by the module 'utf_8.py'.
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encoding names with hyphens and periods mapped to underscores,
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e.g. 'utf-8' is implemented by the module 'utf_8.py'.
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Each codec module must export the following interface:
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@ -28,10 +28,11 @@ Written by Marc-Andre Lemburg (mal@lemburg.com).
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"""#"
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import codecs,aliases,exceptions
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import codecs,exceptions
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_cache = {}
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_unknown = '--unknown--'
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_import_tail = ['*']
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class CodecRegistryError(exceptions.LookupError,
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exceptions.SystemError):
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@ -40,19 +41,37 @@ class CodecRegistryError(exceptions.LookupError,
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def search_function(encoding):
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# Cache lookup
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entry = _cache.get(encoding,_unknown)
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entry = _cache.get(encoding, _unknown)
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if entry is not _unknown:
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return entry
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# Import the module
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# Import the module:
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#
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# First look in the encodings package, then try to lookup the
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# encoding in the aliases mapping and retry the import using the
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# default import module lookup scheme with the alias name.
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#
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modname = encoding.replace('-', '_')
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modname = aliases.aliases.get(modname,modname)
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modname = modname.replace('.', '_')
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try:
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mod = __import__(modname,globals(),locals(),'*')
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mod = __import__('encodings.' + modname,
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globals(), locals(), _import_tail)
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except ImportError,why:
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import aliases
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modname = aliases.aliases.get(modname, _unknown)
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if modname is not _unknown:
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try:
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mod = __import__(modname,
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globals(), locals(), _import_tail)
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except ImportError,why:
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mod = None
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else:
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mod = None
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if mod is None:
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# cache misses
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_cache[encoding] = None
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return None
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# Now ask the module for the registry entry
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try:
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@ -79,6 +98,7 @@ def search_function(encoding):
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except AttributeError:
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pass
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else:
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import aliases
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for alias in codecaliases:
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if not aliases.aliases.has_key(alias):
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aliases.aliases[alias] = modname
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@ -4,108 +4,337 @@
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map encodings names to module names.
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Note that the search function converts the encoding names to lower
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case and replaces hyphens with underscores *before* performing the
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lookup.
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case and replaces hyphens and periods with underscores *before*
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performing the lookup.
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Contents:
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The following aliases dictionary contains mappings of all IANA
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character set names for which the Python core library provides
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codecs. In addition to these, a few Python specific codec
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aliases have also been added.
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About the CJK codec aliases:
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The codecs for these encodings are not distributed with the
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Python core, but are included here for reference, since the
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locale module relies on having these aliases available.
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"""
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aliases = {
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# Latin-1
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'latin': 'latin_1',
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'latin1': 'latin_1',
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# UTF-7
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'utf7': 'utf_7',
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'u7': 'utf_7',
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# UTF-8
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'utf': 'utf_8',
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'utf8': 'utf_8',
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'u8': 'utf_8',
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'utf8@ucs2': 'utf_8',
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'utf8@ucs4': 'utf_8',
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# UTF-16
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'utf16': 'utf_16',
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'u16': 'utf_16',
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'utf_16be': 'utf_16_be',
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'utf_16le': 'utf_16_le',
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'unicodebigunmarked': 'utf_16_be',
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'unicodelittleunmarked': 'utf_16_le',
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# ascii codec
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'646' : 'ascii',
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'ansi_x3_4_1968' : 'ascii',
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'ansi_x3_4_1986' : 'ascii',
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'cp367' : 'ascii',
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'csascii' : 'ascii',
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'ibm367' : 'ascii',
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'iso646_us' : 'ascii',
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'iso_646_irv:1991' : 'ascii',
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'iso_ir_6' : 'ascii',
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'us' : 'ascii',
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'us_ascii' : 'ascii',
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# ASCII
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'us_ascii': 'ascii',
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'ansi_x3.4_1968': 'ascii', # used on Linux
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'646': 'ascii', # used on Solaris
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# base64_codec codec
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'base64' : 'base64_codec',
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'base_64' : 'base64_codec',
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# EBCDIC
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'ebcdic_cp_us': 'cp037',
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'ibm039': 'cp037',
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'ibm1140': 'cp1140',
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# ISO
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'8859': 'latin_1',
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'iso8859': 'latin_1',
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'iso8859_1': 'latin_1',
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'iso_8859_1': 'latin_1',
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'iso_8859_10': 'iso8859_10',
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'iso_8859_13': 'iso8859_13',
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'iso_8859_14': 'iso8859_14',
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'iso_8859_15': 'iso8859_15',
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'iso_8859_2': 'iso8859_2',
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'iso_8859_3': 'iso8859_3',
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'iso_8859_4': 'iso8859_4',
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'iso_8859_5': 'iso8859_5',
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'iso_8859_6': 'iso8859_6',
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'iso_8859_7': 'iso8859_7',
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'iso_8859_8': 'iso8859_8',
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'iso_8859_9': 'iso8859_9',
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# cp037 codec
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'csibm037' : 'cp037',
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'ebcdic_cp_ca' : 'cp037',
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'ebcdic_cp_nl' : 'cp037',
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'ebcdic_cp_us' : 'cp037',
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'ebcdic_cp_wt' : 'cp037',
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'ibm037' : 'cp037',
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'ibm039' : 'cp037',
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# Mac
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'maclatin2': 'mac_latin2',
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'maccentraleurope': 'mac_latin2',
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'maccyrillic': 'mac_cyrillic',
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'macgreek': 'mac_greek',
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'maciceland': 'mac_iceland',
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'macroman': 'mac_roman',
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'macturkish': 'mac_turkish',
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# cp1026 codec
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'csibm1026' : 'cp1026',
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'ibm1026' : 'cp1026',
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# Windows
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'windows_1251': 'cp1251',
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'windows_1252': 'cp1252',
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'windows_1254': 'cp1254',
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'windows_1255': 'cp1255',
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# cp1140 codec
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'ibm1140' : 'cp1140',
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# MBCS
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'dbcs': 'mbcs',
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# cp1250 codec
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'windows_1250' : 'cp1250',
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# Code pages
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'437': 'cp437',
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# cp1251 codec
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'windows_1251' : 'cp1251',
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# CJK
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#
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# The codecs for these encodings are not distributed with the
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# Python core, but are included here for reference, since the
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# locale module relies on having these aliases available.
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#
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'jis_7': 'jis_7',
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'iso_2022_jp': 'jis_7',
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'ujis': 'euc_jp',
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'ajec': 'euc_jp',
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'eucjp': 'euc_jp',
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'tis260': 'tactis',
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'sjis': 'shift_jis',
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# cp1252 codec
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'windows_1252' : 'cp1252',
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# Content transfer/compression encodings
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'rot13': 'rot_13',
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'base64': 'base64_codec',
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'base_64': 'base64_codec',
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'zlib': 'zlib_codec',
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'zip': 'zlib_codec',
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'hex': 'hex_codec',
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'uu': 'uu_codec',
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'quopri': 'quopri_codec',
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'quotedprintable': 'quopri_codec',
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'quoted_printable': 'quopri_codec',
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# cp1253 codec
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'windows_1253' : 'cp1253',
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# cp1254 codec
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'windows_1254' : 'cp1254',
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# cp1255 codec
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'windows_1255' : 'cp1255',
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# cp1256 codec
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'windows_1256' : 'cp1256',
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# cp1257 codec
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'windows_1257' : 'cp1257',
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# cp1258 codec
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'windows_1258' : 'cp1258',
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# cp424 codec
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'csibm424' : 'cp424',
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'ebcdic_cp_he' : 'cp424',
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'ibm424' : 'cp424',
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# cp437 codec
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'437' : 'cp437',
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'cspc8codepage437' : 'cp437',
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'ibm437' : 'cp437',
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# cp500 codec
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'csibm500' : 'cp500',
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'ebcdic_cp_be' : 'cp500',
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'ebcdic_cp_ch' : 'cp500',
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'ibm500' : 'cp500',
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# cp775 codec
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'cspc775baltic' : 'cp775',
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'ibm775' : 'cp775',
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# cp850 codec
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'850' : 'cp850',
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'cspc850multilingual' : 'cp850',
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'ibm850' : 'cp850',
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# cp852 codec
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'852' : 'cp852',
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'cspcp852' : 'cp852',
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'ibm852' : 'cp852',
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# cp855 codec
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'855' : 'cp855',
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'csibm855' : 'cp855',
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'ibm855' : 'cp855',
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# cp857 codec
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'857' : 'cp857',
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'csibm857' : 'cp857',
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'ibm857' : 'cp857',
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# cp860 codec
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'860' : 'cp860',
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'csibm860' : 'cp860',
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'ibm860' : 'cp860',
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# cp861 codec
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'861' : 'cp861',
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'cp_is' : 'cp861',
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'csibm861' : 'cp861',
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'ibm861' : 'cp861',
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# cp862 codec
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'862' : 'cp862',
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'cspc862latinhebrew' : 'cp862',
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'ibm862' : 'cp862',
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# cp863 codec
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'863' : 'cp863',
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'csibm863' : 'cp863',
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'ibm863' : 'cp863',
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# cp864 codec
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'csibm864' : 'cp864',
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'ibm864' : 'cp864',
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# cp865 codec
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'865' : 'cp865',
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'csibm865' : 'cp865',
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'ibm865' : 'cp865',
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# cp866 codec
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'866' : 'cp866',
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'csibm866' : 'cp866',
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'ibm866' : 'cp866',
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# cp869 codec
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'869' : 'cp869',
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'cp_gr' : 'cp869',
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'csibm869' : 'cp869',
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'ibm869' : 'cp869',
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# hex_codec codec
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'hex' : 'hex_codec',
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# iso8859_10 codec
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'csisolatin6' : 'iso8859_10',
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'iso_8859_10' : 'iso8859_10',
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'iso_8859_10:1992' : 'iso8859_10',
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'iso_ir_157' : 'iso8859_10',
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'l6' : 'iso8859_10',
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'latin6' : 'iso8859_10',
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# iso8859_13 codec
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'iso_8859_13' : 'iso8859_13',
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# iso8859_14 codec
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'iso_8859_14' : 'iso8859_14',
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'iso_8859_14:1998' : 'iso8859_14',
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'iso_celtic' : 'iso8859_14',
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'iso_ir_199' : 'iso8859_14',
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'l8' : 'iso8859_14',
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'latin8' : 'iso8859_14',
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# iso8859_15 codec
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'iso_8859_15' : 'iso8859_15',
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# iso8859_2 codec
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'csisolatin2' : 'iso8859_2',
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'iso_8859_2' : 'iso8859_2',
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'iso_8859_2:1987' : 'iso8859_2',
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'iso_ir_101' : 'iso8859_2',
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'l2' : 'iso8859_2',
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'latin2' : 'iso8859_2',
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# iso8859_3 codec
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'csisolatin3' : 'iso8859_3',
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'iso_8859_3' : 'iso8859_3',
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'iso_8859_3:1988' : 'iso8859_3',
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'iso_ir_109' : 'iso8859_3',
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'l3' : 'iso8859_3',
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'latin3' : 'iso8859_3',
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# iso8859_4 codec
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'csisolatin4' : 'iso8859_4',
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'iso_8859_4' : 'iso8859_4',
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'iso_8859_4:1988' : 'iso8859_4',
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'iso_ir_110' : 'iso8859_4',
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'l4' : 'iso8859_4',
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'latin4' : 'iso8859_4',
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# iso8859_5 codec
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'csisolatincyrillic' : 'iso8859_5',
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'cyrillic' : 'iso8859_5',
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'iso_8859_5' : 'iso8859_5',
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'iso_8859_5:1988' : 'iso8859_5',
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'iso_ir_144' : 'iso8859_5',
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# iso8859_6 codec
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'arabic' : 'iso8859_6',
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'asmo_708' : 'iso8859_6',
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'csisolatinarabic' : 'iso8859_6',
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'ecma_114' : 'iso8859_6',
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'iso_8859_6' : 'iso8859_6',
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'iso_8859_6:1987' : 'iso8859_6',
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'iso_ir_127' : 'iso8859_6',
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# iso8859_7 codec
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'csisolatingreek' : 'iso8859_7',
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'ecma_118' : 'iso8859_7',
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'elot_928' : 'iso8859_7',
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'greek' : 'iso8859_7',
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'greek8' : 'iso8859_7',
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'iso_8859_7' : 'iso8859_7',
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'iso_8859_7:1987' : 'iso8859_7',
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'iso_ir_126' : 'iso8859_7',
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# iso8859_8 codec
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'csisolatinhebrew' : 'iso8859_8',
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'hebrew' : 'iso8859_8',
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'iso_8859_8' : 'iso8859_8',
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'iso_8859_8:1988' : 'iso8859_8',
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'iso_ir_138' : 'iso8859_8',
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# iso8859_9 codec
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'csisolatin5' : 'iso8859_9',
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'iso_8859_9' : 'iso8859_9',
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'iso_8859_9:1989' : 'iso8859_9',
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'iso_ir_148' : 'iso8859_9',
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'l5' : 'iso8859_9',
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'latin5' : 'iso8859_9',
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# jis_7 codec
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'csiso2022jp' : 'jis_7',
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'iso_2022_jp' : 'jis_7',
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# koi8_r codec
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'cskoi8r' : 'koi8_r',
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# latin_1 codec
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'8859' : 'latin_1',
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'cp819' : 'latin_1',
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'csisolatin1' : 'latin_1',
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'ibm819' : 'latin_1',
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'iso8859' : 'latin_1',
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'iso_8859_1' : 'latin_1',
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'iso_8859_1:1987' : 'latin_1',
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'iso_ir_100' : 'latin_1',
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'l1' : 'latin_1',
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'latin' : 'latin_1',
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'latin1' : 'latin_1',
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# mac_cyrillic codec
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'maccyrillic' : 'mac_cyrillic',
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# mac_greek codec
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'macgreek' : 'mac_greek',
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# mac_iceland codec
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'maciceland' : 'mac_iceland',
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# mac_latin2 codec
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'maccentraleurope' : 'mac_latin2',
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'maclatin2' : 'mac_latin2',
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# mac_roman codec
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'macroman' : 'mac_roman',
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# mac_turkish codec
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'macturkish' : 'mac_turkish',
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# mbcs codec
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'dbcs' : 'mbcs',
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# quopri_codec codec
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'quopri' : 'quopri_codec',
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'quoted_printable' : 'quopri_codec',
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'quotedprintable' : 'quopri_codec',
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# rot_13 codec
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'rot13' : 'rot_13',
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# tactis codec
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'tis260' : 'tactis',
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# utf_16 codec
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'u16' : 'utf_16',
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'utf16' : 'utf_16',
|
||||
|
||||
# utf_16_be codec
|
||||
'unicodebigunmarked' : 'utf_16_be',
|
||||
'utf_16be' : 'utf_16_be',
|
||||
|
||||
# utf_16_le codec
|
||||
'unicodelittleunmarked' : 'utf_16_le',
|
||||
'utf_16le' : 'utf_16_le',
|
||||
|
||||
# utf_7 codec
|
||||
'u7' : 'utf_7',
|
||||
'utf7' : 'utf_7',
|
||||
|
||||
# utf_8 codec
|
||||
'u8' : 'utf_8',
|
||||
'utf' : 'utf_8',
|
||||
'utf8' : 'utf_8',
|
||||
'utf8@ucs2' : 'utf_8',
|
||||
'utf8@ucs4' : 'utf_8',
|
||||
|
||||
# uu_codec codec
|
||||
'uu' : 'uu_codec',
|
||||
|
||||
# zlib_codec codec
|
||||
'zip' : 'zlib_codec',
|
||||
'zlib' : 'zlib_codec',
|
||||
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue