Staging
v0.8.1
v0.8.1
Revision 2e382ca1b2c36c6fbdd26c9cf98e2764b43873ec authored by Guido van Rossum on 08 October 2002, 01:04:34 UTC, committed by Guido van Rossum on 08 October 2002, 01:04:34 UTC
checkin since 2.2.2b1 was released.
1 parent 24f7c89
_codecsmodule.c
/* ------------------------------------------------------------------------
_codecs -- Provides access to the codec registry and the builtin
codecs.
This module should never be imported directly. The standard library
module "codecs" wraps this builtin module for use within Python.
The codec registry is accessible via:
register(search_function) -> None
lookup(encoding) -> (encoder, decoder, stream_reader, stream_writer)
The builtin Unicode codecs use the following interface:
<encoding>_encode(Unicode_object[,errors='strict']) ->
(string object, bytes consumed)
<encoding>_decode(char_buffer_obj[,errors='strict']) ->
(Unicode object, bytes consumed)
<encoding>_encode() interfaces also accept non-Unicode object as
input. The objects are then converted to Unicode using
PyUnicode_FromObject() prior to applying the conversion.
These <encoding>s are available: utf_8, unicode_escape,
raw_unicode_escape, unicode_internal, latin_1, ascii (7-bit),
mbcs (on win32).
Written by Marc-Andre Lemburg (mal@lemburg.com).
Copyright (c) Corporation for National Research Initiatives.
------------------------------------------------------------------------ */
#include "Python.h"
/* --- Registry ----------------------------------------------------------- */
static
PyObject *codecregister(PyObject *self, PyObject *args)
{
PyObject *search_function;
if (!PyArg_ParseTuple(args, "O:register", &search_function))
goto onError;
if (PyCodec_Register(search_function))
goto onError;
Py_INCREF(Py_None);
return Py_None;
onError:
return NULL;
}
static
PyObject *codeclookup(PyObject *self, PyObject *args)
{
char *encoding;
if (!PyArg_ParseTuple(args, "s:lookup", &encoding))
goto onError;
return _PyCodec_Lookup(encoding);
onError:
return NULL;
}
#ifdef Py_USING_UNICODE
/* --- Helpers ------------------------------------------------------------ */
static
PyObject *codec_tuple(PyObject *unicode,
int len)
{
PyObject *v,*w;
if (unicode == NULL)
return NULL;
v = PyTuple_New(2);
if (v == NULL) {
Py_DECREF(unicode);
return NULL;
}
PyTuple_SET_ITEM(v,0,unicode);
w = PyInt_FromLong(len);
if (w == NULL) {
Py_DECREF(v);
return NULL;
}
PyTuple_SET_ITEM(v,1,w);
return v;
}
/* --- Decoder ------------------------------------------------------------ */
static PyObject *
unicode_internal_decode(PyObject *self,
PyObject *args)
{
PyObject *obj;
const char *errors = NULL;
const char *data;
int size;
if (!PyArg_ParseTuple(args, "O|z:unicode_internal_decode",
&obj, &errors))
return NULL;
if (PyUnicode_Check(obj))
return codec_tuple(obj, PyUnicode_GET_SIZE(obj));
else {
if (PyObject_AsReadBuffer(obj, (const void **)&data, &size))
return NULL;
return codec_tuple(PyUnicode_FromUnicode((Py_UNICODE *)data,
size / sizeof(Py_UNICODE)),
size);
}
}
static PyObject *
utf_7_decode(PyObject *self,
PyObject *args)
{
const char *data;
int size;
const char *errors = NULL;
if (!PyArg_ParseTuple(args, "t#|z:utf_7_decode",
&data, &size, &errors))
return NULL;
return codec_tuple(PyUnicode_DecodeUTF7(data, size, errors),
size);
}
static PyObject *
utf_8_decode(PyObject *self,
PyObject *args)
{
const char *data;
int size;
const char *errors = NULL;
if (!PyArg_ParseTuple(args, "t#|z:utf_8_decode",
&data, &size, &errors))
return NULL;
return codec_tuple(PyUnicode_DecodeUTF8(data, size, errors),
size);
}
static PyObject *
utf_16_decode(PyObject *self,
PyObject *args)
{
const char *data;
int size;
const char *errors = NULL;
int byteorder = 0;
if (!PyArg_ParseTuple(args, "t#|z:utf_16_decode",
&data, &size, &errors))
return NULL;
return codec_tuple(PyUnicode_DecodeUTF16(data, size, errors, &byteorder),
size);
}
static PyObject *
utf_16_le_decode(PyObject *self,
PyObject *args)
{
const char *data;
int size;
const char *errors = NULL;
int byteorder = -1;
if (!PyArg_ParseTuple(args, "t#|z:utf_16_le_decode",
&data, &size, &errors))
return NULL;
return codec_tuple(PyUnicode_DecodeUTF16(data, size, errors, &byteorder),
size);
}
static PyObject *
utf_16_be_decode(PyObject *self,
PyObject *args)
{
const char *data;
int size;
const char *errors = NULL;
int byteorder = 1;
if (!PyArg_ParseTuple(args, "t#|z:utf_16_be_decode",
&data, &size, &errors))
return NULL;
return codec_tuple(PyUnicode_DecodeUTF16(data, size, errors, &byteorder),
size);
}
/* This non-standard version also provides access to the byteorder
parameter of the builtin UTF-16 codec.
It returns a tuple (unicode, bytesread, byteorder) with byteorder
being the value in effect at the end of data.
*/
static PyObject *
utf_16_ex_decode(PyObject *self,
PyObject *args)
{
const char *data;
int size;
const char *errors = NULL;
int byteorder = 0;
PyObject *unicode, *tuple;
if (!PyArg_ParseTuple(args, "t#|zi:utf_16_ex_decode",
&data, &size, &errors, &byteorder))
return NULL;
unicode = PyUnicode_DecodeUTF16(data, size, errors, &byteorder);
if (unicode == NULL)
return NULL;
tuple = Py_BuildValue("Oii", unicode, size, byteorder);
Py_DECREF(unicode);
return tuple;
}
static PyObject *
unicode_escape_decode(PyObject *self,
PyObject *args)
{
const char *data;
int size;
const char *errors = NULL;
if (!PyArg_ParseTuple(args, "t#|z:unicode_escape_decode",
&data, &size, &errors))
return NULL;
return codec_tuple(PyUnicode_DecodeUnicodeEscape(data, size, errors),
size);
}
static PyObject *
raw_unicode_escape_decode(PyObject *self,
PyObject *args)
{
const char *data;
int size;
const char *errors = NULL;
if (!PyArg_ParseTuple(args, "t#|z:raw_unicode_escape_decode",
&data, &size, &errors))
return NULL;
return codec_tuple(PyUnicode_DecodeRawUnicodeEscape(data, size, errors),
size);
}
static PyObject *
latin_1_decode(PyObject *self,
PyObject *args)
{
const char *data;
int size;
const char *errors = NULL;
if (!PyArg_ParseTuple(args, "t#|z:latin_1_decode",
&data, &size, &errors))
return NULL;
return codec_tuple(PyUnicode_DecodeLatin1(data, size, errors),
size);
}
static PyObject *
ascii_decode(PyObject *self,
PyObject *args)
{
const char *data;
int size;
const char *errors = NULL;
if (!PyArg_ParseTuple(args, "t#|z:ascii_decode",
&data, &size, &errors))
return NULL;
return codec_tuple(PyUnicode_DecodeASCII(data, size, errors),
size);
}
static PyObject *
charmap_decode(PyObject *self,
PyObject *args)
{
const char *data;
int size;
const char *errors = NULL;
PyObject *mapping = NULL;
if (!PyArg_ParseTuple(args, "t#|zO:charmap_decode",
&data, &size, &errors, &mapping))
return NULL;
if (mapping == Py_None)
mapping = NULL;
return codec_tuple(PyUnicode_DecodeCharmap(data, size, mapping, errors),
size);
}
#if defined(MS_WIN32) && defined(HAVE_USABLE_WCHAR_T)
static PyObject *
mbcs_decode(PyObject *self,
PyObject *args)
{
const char *data;
int size;
const char *errors = NULL;
if (!PyArg_ParseTuple(args, "t#|z:mbcs_decode",
&data, &size, &errors))
return NULL;
return codec_tuple(PyUnicode_DecodeMBCS(data, size, errors),
size);
}
#endif /* MS_WIN32 */
/* --- Encoder ------------------------------------------------------------ */
static PyObject *
readbuffer_encode(PyObject *self,
PyObject *args)
{
const char *data;
int size;
const char *errors = NULL;
if (!PyArg_ParseTuple(args, "s#|z:readbuffer_encode",
&data, &size, &errors))
return NULL;
return codec_tuple(PyString_FromStringAndSize(data, size),
size);
}
static PyObject *
charbuffer_encode(PyObject *self,
PyObject *args)
{
const char *data;
int size;
const char *errors = NULL;
if (!PyArg_ParseTuple(args, "t#|z:charbuffer_encode",
&data, &size, &errors))
return NULL;
return codec_tuple(PyString_FromStringAndSize(data, size),
size);
}
static PyObject *
unicode_internal_encode(PyObject *self,
PyObject *args)
{
PyObject *obj;
const char *errors = NULL;
const char *data;
int size;
if (!PyArg_ParseTuple(args, "O|z:unicode_internal_encode",
&obj, &errors))
return NULL;
if (PyUnicode_Check(obj)) {
data = PyUnicode_AS_DATA(obj);
size = PyUnicode_GET_DATA_SIZE(obj);
return codec_tuple(PyString_FromStringAndSize(data, size),
size);
}
else {
if (PyObject_AsReadBuffer(obj, (const void **)&data, &size))
return NULL;
return codec_tuple(PyString_FromStringAndSize(data, size),
size);
}
}
static PyObject *
utf_7_encode(PyObject *self,
PyObject *args)
{
PyObject *str, *v;
const char *errors = NULL;
if (!PyArg_ParseTuple(args, "O|z:utf_7_encode",
&str, &errors))
return NULL;
str = PyUnicode_FromObject(str);
if (str == NULL)
return NULL;
v = codec_tuple(PyUnicode_EncodeUTF7(PyUnicode_AS_UNICODE(str),
PyUnicode_GET_SIZE(str),
0,
0,
errors),
PyUnicode_GET_SIZE(str));
Py_DECREF(str);
return v;
}
static PyObject *
utf_8_encode(PyObject *self,
PyObject *args)
{
PyObject *str, *v;
const char *errors = NULL;
if (!PyArg_ParseTuple(args, "O|z:utf_8_encode",
&str, &errors))
return NULL;
str = PyUnicode_FromObject(str);
if (str == NULL)
return NULL;
v = codec_tuple(PyUnicode_EncodeUTF8(PyUnicode_AS_UNICODE(str),
PyUnicode_GET_SIZE(str),
errors),
PyUnicode_GET_SIZE(str));
Py_DECREF(str);
return v;
}
/* This version provides access to the byteorder parameter of the
builtin UTF-16 codecs as optional third argument. It defaults to 0
which means: use the native byte order and prepend the data with a
BOM mark.
*/
static PyObject *
utf_16_encode(PyObject *self,
PyObject *args)
{
PyObject *str, *v;
const char *errors = NULL;
int byteorder = 0;
if (!PyArg_ParseTuple(args, "O|zi:utf_16_encode",
&str, &errors, &byteorder))
return NULL;
str = PyUnicode_FromObject(str);
if (str == NULL)
return NULL;
v = codec_tuple(PyUnicode_EncodeUTF16(PyUnicode_AS_UNICODE(str),
PyUnicode_GET_SIZE(str),
errors,
byteorder),
PyUnicode_GET_SIZE(str));
Py_DECREF(str);
return v;
}
static PyObject *
utf_16_le_encode(PyObject *self,
PyObject *args)
{
PyObject *str, *v;
const char *errors = NULL;
if (!PyArg_ParseTuple(args, "O|z:utf_16_le_encode",
&str, &errors))
return NULL;
str = PyUnicode_FromObject(str);
if (str == NULL)
return NULL;
v = codec_tuple(PyUnicode_EncodeUTF16(PyUnicode_AS_UNICODE(str),
PyUnicode_GET_SIZE(str),
errors,
-1),
PyUnicode_GET_SIZE(str));
Py_DECREF(str);
return v;
}
static PyObject *
utf_16_be_encode(PyObject *self,
PyObject *args)
{
PyObject *str, *v;
const char *errors = NULL;
if (!PyArg_ParseTuple(args, "O|z:utf_16_be_encode",
&str, &errors))
return NULL;
str = PyUnicode_FromObject(str);
if (str == NULL)
return NULL;
v = codec_tuple(PyUnicode_EncodeUTF16(PyUnicode_AS_UNICODE(str),
PyUnicode_GET_SIZE(str),
errors,
+1),
PyUnicode_GET_SIZE(str));
Py_DECREF(str);
return v;
}
static PyObject *
unicode_escape_encode(PyObject *self,
PyObject *args)
{
PyObject *str, *v;
const char *errors = NULL;
if (!PyArg_ParseTuple(args, "O|z:unicode_escape_encode",
&str, &errors))
return NULL;
str = PyUnicode_FromObject(str);
if (str == NULL)
return NULL;
v = codec_tuple(PyUnicode_EncodeUnicodeEscape(PyUnicode_AS_UNICODE(str),
PyUnicode_GET_SIZE(str)),
PyUnicode_GET_SIZE(str));
Py_DECREF(str);
return v;
}
static PyObject *
raw_unicode_escape_encode(PyObject *self,
PyObject *args)
{
PyObject *str, *v;
const char *errors = NULL;
if (!PyArg_ParseTuple(args, "O|z:raw_unicode_escape_encode",
&str, &errors))
return NULL;
str = PyUnicode_FromObject(str);
if (str == NULL)
return NULL;
v = codec_tuple(PyUnicode_EncodeRawUnicodeEscape(
PyUnicode_AS_UNICODE(str),
PyUnicode_GET_SIZE(str)),
PyUnicode_GET_SIZE(str));
Py_DECREF(str);
return v;
}
static PyObject *
latin_1_encode(PyObject *self,
PyObject *args)
{
PyObject *str, *v;
const char *errors = NULL;
if (!PyArg_ParseTuple(args, "O|z:latin_1_encode",
&str, &errors))
return NULL;
str = PyUnicode_FromObject(str);
if (str == NULL)
return NULL;
v = codec_tuple(PyUnicode_EncodeLatin1(
PyUnicode_AS_UNICODE(str),
PyUnicode_GET_SIZE(str),
errors),
PyUnicode_GET_SIZE(str));
Py_DECREF(str);
return v;
}
static PyObject *
ascii_encode(PyObject *self,
PyObject *args)
{
PyObject *str, *v;
const char *errors = NULL;
if (!PyArg_ParseTuple(args, "O|z:ascii_encode",
&str, &errors))
return NULL;
str = PyUnicode_FromObject(str);
if (str == NULL)
return NULL;
v = codec_tuple(PyUnicode_EncodeASCII(
PyUnicode_AS_UNICODE(str),
PyUnicode_GET_SIZE(str),
errors),
PyUnicode_GET_SIZE(str));
Py_DECREF(str);
return v;
}
static PyObject *
charmap_encode(PyObject *self,
PyObject *args)
{
PyObject *str, *v;
const char *errors = NULL;
PyObject *mapping = NULL;
if (!PyArg_ParseTuple(args, "O|zO:charmap_encode",
&str, &errors, &mapping))
return NULL;
if (mapping == Py_None)
mapping = NULL;
str = PyUnicode_FromObject(str);
if (str == NULL)
return NULL;
v = codec_tuple(PyUnicode_EncodeCharmap(
PyUnicode_AS_UNICODE(str),
PyUnicode_GET_SIZE(str),
mapping,
errors),
PyUnicode_GET_SIZE(str));
Py_DECREF(str);
return v;
}
#if defined(MS_WIN32) && defined(HAVE_USABLE_WCHAR_T)
static PyObject *
mbcs_encode(PyObject *self,
PyObject *args)
{
PyObject *str, *v;
const char *errors = NULL;
if (!PyArg_ParseTuple(args, "O|z:mbcs_encode",
&str, &errors))
return NULL;
str = PyUnicode_FromObject(str);
if (str == NULL)
return NULL;
v = codec_tuple(PyUnicode_EncodeMBCS(
PyUnicode_AS_UNICODE(str),
PyUnicode_GET_SIZE(str),
errors),
PyUnicode_GET_SIZE(str));
Py_DECREF(str);
return v;
}
#endif /* MS_WIN32 */
#endif /* Py_USING_UNICODE */
/* --- Module API --------------------------------------------------------- */
static PyMethodDef _codecs_functions[] = {
{"register", codecregister, 1},
{"lookup", codeclookup, 1},
#ifdef Py_USING_UNICODE
{"utf_8_encode", utf_8_encode, 1},
{"utf_8_decode", utf_8_decode, 1},
{"utf_7_encode", utf_7_encode, 1},
{"utf_7_decode", utf_7_decode, 1},
{"utf_16_encode", utf_16_encode, 1},
{"utf_16_le_encode", utf_16_le_encode, 1},
{"utf_16_be_encode", utf_16_be_encode, 1},
{"utf_16_decode", utf_16_decode, 1},
{"utf_16_le_decode", utf_16_le_decode, 1},
{"utf_16_be_decode", utf_16_be_decode, 1},
{"utf_16_ex_decode", utf_16_ex_decode, 1},
{"unicode_escape_encode", unicode_escape_encode, 1},
{"unicode_escape_decode", unicode_escape_decode, 1},
{"unicode_internal_encode", unicode_internal_encode, 1},
{"unicode_internal_decode", unicode_internal_decode, 1},
{"raw_unicode_escape_encode", raw_unicode_escape_encode, 1},
{"raw_unicode_escape_decode", raw_unicode_escape_decode, 1},
{"latin_1_encode", latin_1_encode, 1},
{"latin_1_decode", latin_1_decode, 1},
{"ascii_encode", ascii_encode, 1},
{"ascii_decode", ascii_decode, 1},
{"charmap_encode", charmap_encode, 1},
{"charmap_decode", charmap_decode, 1},
{"readbuffer_encode", readbuffer_encode, 1},
{"charbuffer_encode", charbuffer_encode, 1},
#if defined(MS_WIN32) && defined(HAVE_USABLE_WCHAR_T)
{"mbcs_encode", mbcs_encode, 1},
{"mbcs_decode", mbcs_decode, 1},
#endif
#endif /* Py_USING_UNICODE */
{NULL, NULL} /* sentinel */
};
DL_EXPORT(void)
init_codecs(void)
{
Py_InitModule("_codecs", _codecs_functions);
}
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