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 #ifndef Py_CODECREGISTRY_H
 #define Py_CODECREGISTRY_H
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 /* ------------------------------------------------------------------------
 
    Python Codec Registry and support functions
 
 
 Written by Marc-Andre Lemburg (mal@lemburg.com).
 
 Copyright (c) Corporation for National Research Initiatives.
 
    ------------------------------------------------------------------------ */
 
 /* Register a new codec search function.
 
    As side effect, this tries to load the encodings package, if not
    yet done, to make sure that it is always first in the list of
    search functions.
 
    The search_function's refcount is incremented by this function. */
 
 PyAPI_FUNC(int) PyCodec_Register(
        PyObject *search_function
        );
 
 /* Unregister a codec search function and clear the registry's cache.
    If the search function is not registered, do nothing.
    Return 0 on success. Raise an exception and return -1 on error. */
 
 PyAPI_FUNC(int) PyCodec_Unregister(
        PyObject *search_function
        );
 
 /* Codec registry lookup API.
 
    Looks up the given encoding and returns a CodecInfo object with
    function attributes which implement the different aspects of
    processing the encoding.
 
    The encoding string is looked up converted to all lower-case
    characters. This makes encodings looked up through this mechanism
    effectively case-insensitive.
 
    If no codec is found, a KeyError is set and NULL returned.
 
    As side effect, this tries to load the encodings package, if not
    yet done. This is part of the lazy load strategy for the encodings
    package.
 
  */
 
 #ifndef Py_LIMITED_API
 PyAPI_FUNC(PyObject *) _PyCodec_Lookup(
        const char *encoding
        );
 
 PyAPI_FUNC(int) _PyCodec_Forget(
        const char *encoding
        );
 #endif
 
 /* Codec registry encoding check API.
 
    Returns 1/0 depending on whether there is a registered codec for
    the given encoding.
 
 */
 
 PyAPI_FUNC(int) PyCodec_KnownEncoding(
        const char *encoding
        );
 
 /* Generic codec based encoding API.
 
    object is passed through the encoder function found for the given
    encoding using the error handling method defined by errors. errors
    may be NULL to use the default method defined for the codec.
 
    Raises a LookupError in case no encoder can be found.
 
  */
 
 PyAPI_FUNC(PyObject *) PyCodec_Encode(
        PyObject *object,
        const char *encoding,
        const char *errors
        );
 
 /* Generic codec based decoding API.
 
    object is passed through the decoder function found for the given
    encoding using the error handling method defined by errors. errors
    may be NULL to use the default method defined for the codec.
 
    Raises a LookupError in case no encoder can be found.
 
  */
 
 PyAPI_FUNC(PyObject *) PyCodec_Decode(
        PyObject *object,
        const char *encoding,
        const char *errors
        );
 
 #ifndef Py_LIMITED_API
 /* Text codec specific encoding and decoding API.
 
    Checks the encoding against a list of codecs which do not
    implement a str<->bytes encoding before attempting the
    operation.
 
    Please note that these APIs are internal and should not
    be used in Python C extensions.
 
    XXX (ncoghlan): should we make these, or something like them, public
    in Python 3.5+?
 
  */
 PyAPI_FUNC(PyObject *) _PyCodec_LookupTextEncoding(
        const char *encoding,
        const char *alternate_command
        );
 
 PyAPI_FUNC(PyObject *) _PyCodec_EncodeText(
        PyObject *object,
        const char *encoding,
        const char *errors
        );
 
 PyAPI_FUNC(PyObject *) _PyCodec_DecodeText(
        PyObject *object,
        const char *encoding,
        const char *errors
        );
 
 /* These two aren't actually text encoding specific, but _io.TextIOWrapper
  * is the only current API consumer.
  */
 PyAPI_FUNC(PyObject *) _PyCodecInfo_GetIncrementalDecoder(
        PyObject *codec_info,
        const char *errors
        );
 
 PyAPI_FUNC(PyObject *) _PyCodecInfo_GetIncrementalEncoder(
        PyObject *codec_info,
        const char *errors
        );
 #endif
 
 
 
 /* --- Codec Lookup APIs --------------------------------------------------
 
    All APIs return a codec object with incremented refcount and are
    based on _PyCodec_Lookup().  The same comments w/r to the encoding
    name also apply to these APIs.
 
 */
 
 /* Get an encoder function for the given encoding. */
 
 PyAPI_FUNC(PyObject *) PyCodec_Encoder(
        const char *encoding
        );
 
 /* Get a decoder function for the given encoding. */
 
 PyAPI_FUNC(PyObject *) PyCodec_Decoder(
        const char *encoding
        );
 
 /* Get an IncrementalEncoder object for the given encoding. */
 
 PyAPI_FUNC(PyObject *) PyCodec_IncrementalEncoder(
        const char *encoding,
        const char *errors
        );
 
 /* Get an IncrementalDecoder object function for the given encoding. */
 
 PyAPI_FUNC(PyObject *) PyCodec_IncrementalDecoder(
        const char *encoding,
        const char *errors
        );
 
 /* Get a StreamReader factory function for the given encoding. */
 
 PyAPI_FUNC(PyObject *) PyCodec_StreamReader(
        const char *encoding,
        PyObject *stream,
        const char *errors
        );
 
 /* Get a StreamWriter factory function for the given encoding. */
 
 PyAPI_FUNC(PyObject *) PyCodec_StreamWriter(
        const char *encoding,
        PyObject *stream,
        const char *errors
        );
 
 /* Unicode encoding error handling callback registry API */
 
 /* Register the error handling callback function error under the given
    name. This function will be called by the codec when it encounters
    unencodable characters/undecodable bytes and doesn't know the
    callback name, when name is specified as the error parameter
    in the call to the encode/decode function.
    Return 0 on success, -1 on error */
 PyAPI_FUNC(int) PyCodec_RegisterError(const char *name, PyObject *error);
 
 /* Lookup the error handling callback function registered under the given
    name. As a special case NULL can be passed, in which case
    the error handling callback for "strict" will be returned. */
 PyAPI_FUNC(PyObject *) PyCodec_LookupError(const char *name);
 
 /* raise exc as an exception */
 PyAPI_FUNC(PyObject *) PyCodec_StrictErrors(PyObject *exc);
 
 /* ignore the unicode error, skipping the faulty input */
 PyAPI_FUNC(PyObject *) PyCodec_IgnoreErrors(PyObject *exc);
 
 /* replace the unicode encode error with ? or U+FFFD */
 PyAPI_FUNC(PyObject *) PyCodec_ReplaceErrors(PyObject *exc);
 
 /* replace the unicode encode error with XML character references */
 PyAPI_FUNC(PyObject *) PyCodec_XMLCharRefReplaceErrors(PyObject *exc);
 
 /* replace the unicode encode error with backslash escapes (\x, \u and \U) */
 PyAPI_FUNC(PyObject *) PyCodec_BackslashReplaceErrors(PyObject *exc);
 
 #if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03050000
 /* replace the unicode encode error with backslash escapes (\N, \x, \u and \U) */
 PyAPI_FUNC(PyObject *) PyCodec_NameReplaceErrors(PyObject *exc);
 #endif
 
 #ifndef Py_LIMITED_API
 PyAPI_DATA(const char *) Py_hexdigits;
 #endif
 
 #ifdef __cplusplus
 }
 #endif
 #endif /* !Py_CODECREGISTRY_H */

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