编解码器注册与支持功能

int PyCodec_Register(PyObject *search_function)

注册一个新的编解码器搜索函数。

作为副作用，其尝试加载 encodings 包，如果尚未完成，请确保它始终位于搜索函数列表的第一位。

int PyCodec_KnownEncoding(const char *encoding)

Return 1 or 0 depending on whether there is a registered codec for the given encoding.

PyObject* PyCodec_Encode(PyObject *object, const char *encoding, const char *errors)

泛型编解码器基本编码 API。

object 使用 errors 定义的错误处理方法传递给定 encoding 的编码器函数。 errors 可能是 NULL 以使用为编解码器定义的默认方法。如果找不到编码器，则抛出 LookupError。

PyObject* PyCodec_Decode(PyObject *object, const char *encoding, const char *errors)

泛型编解码器基本解码 API。

object 使用 errors 定义的错误处理方法传递给定 encoding 的解码器函数。 errors 可能是 NULL 以使用为编解码器定义的默认方法。如果找不到编码器，则抛出 LookupError。

Codec lookup API

In the following functions, the encoding string is looked up converted to all lower-case characters, which makes encodings looked up through this mechanism effectively case-insensitive. If no codec is found, a KeyError is set and NULL returned.

PyObject* PyCodec_Encoder(const char *encoding)

Get an encoder function for the given encoding.

PyObject* PyCodec_Decoder(const char *encoding)

Get a decoder function for the given encoding.

PyObject* PyCodec_IncrementalEncoder(const char *encoding, const char *errors)

Get an IncrementalEncoder object for the given encoding.

PyObject* PyCodec_IncrementalDecoder(const char *encoding, const char *errors)

Get an IncrementalDecoder object for the given encoding.

PyObject* PyCodec_StreamReader(const char *encoding, PyObject *stream, const char *errors)

Get a StreamReader factory function for the given encoding.

PyObject* PyCodec_StreamWriter(const char *encoding, PyObject *stream, const char *errors)

Get a StreamWriter factory function for the given encoding.

Registry API for Unicode encoding error handlers

int PyCodec_RegisterError(const char *name, PyObject *error)

Register the error handling callback function error under the given name. This callback function will be called by a codec when it encounters unencodable characters/undecodable bytes and name is specified as the error parameter in the call to the encode/decode function.

The callback gets a single argument, an instance of UnicodeEncodeError, UnicodeDecodeError or UnicodeTranslateError that holds information about the problematic sequence of characters or bytes and their offset in the original string (see Unicode Exception Objects for functions to extract this information). The callback must either raise the given exception, or return a two-item tuple containing the replacement for the problematic sequence, and an integer giving the offset in the original string at which encoding/decoding should be resumed.

Return 0 on success, -1 on error.

PyObject* PyCodec_LookupError(const char *name)

Lookup the error handling callback function registered under name. As a special case NULL can be passed, in which case the error handling callback for “strict” will be returned.

PyObject* PyCodec_StrictErrors(PyObject *exc)

Raise exc as an exception.

PyObject* PyCodec_IgnoreErrors(PyObject *exc)

Ignore the unicode error, skipping the faulty input.

PyObject* PyCodec_ReplaceErrors(PyObject *exc)

Replace the unicode encode error with ? or U+FFFD.

PyObject* PyCodec_XMLCharRefReplaceErrors(PyObject *exc)

Replace the unicode encode error with XML character references.

PyObject* PyCodec_BackslashReplaceErrors(PyObject *exc)

Replace the unicode encode error with backslash escapes (\x, \u and \U).