diff options
Diffstat (limited to 'Modules/cjkcodecs/codecentry.h')
| -rw-r--r-- | Modules/cjkcodecs/codecentry.h | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/Modules/cjkcodecs/codecentry.h b/Modules/cjkcodecs/codecentry.h new file mode 100644 index 0000000..a8bc04c --- /dev/null +++ b/Modules/cjkcodecs/codecentry.h @@ -0,0 +1,177 @@ +/* + * codecentry.h: Common Codec Entry Routines + * + * Written by Hye-Shik Chang <perky@FreeBSD.org> + * $CJKCodecs: codecentry.h,v 1.5 2004/01/17 11:26:10 perky Exp $ + */ + +#ifdef HAVE_ENCODER_INIT +#define ENCODER_INIT_FUNC(encoding) encoding##_encode_init +#else +#define ENCODER_INIT_FUNC(encoding) NULL +#endif + +#ifdef HAVE_ENCODER_RESET +#define ENCODER_RESET_FUNC(encoding) encoding##_encode_reset +#else +#define ENCODER_RESET_FUNC(encoding) NULL +#endif + +#ifdef HAVE_DECODER_INIT +#define DECODER_INIT_FUNC(encoding) encoding##_decode_init +#else +#define DECODER_INIT_FUNC(encoding) NULL +#endif + +#ifdef HAVE_DECODER_RESET +#define DECODER_RESET_FUNC(encoding) encoding##_decode_reset +#else +#define DECODER_RESET_FUNC(encoding) NULL +#endif + +#ifdef STRICT_BUILD +#define BEGIN_CODEC_REGISTRY(encoding) \ + __BEGIN_CODEC_REGISTRY(encoding, init_codecs_##encoding##_strict) +#else +#define BEGIN_CODEC_REGISTRY(encoding) \ + __BEGIN_CODEC_REGISTRY(encoding, init_codecs_##encoding) +#endif + +#define __BEGIN_CODEC_REGISTRY(encoding, initname) \ + static MultibyteCodec __codec = { \ + #encoding STRICT_SUFX, \ + encoding##_encode, \ + ENCODER_INIT_FUNC(encoding), \ + ENCODER_RESET_FUNC(encoding), \ + encoding##_decode, \ + DECODER_INIT_FUNC(encoding), \ + DECODER_RESET_FUNC(encoding), \ + }; \ + \ + static struct PyMethodDef __methods[] = { \ + {NULL, NULL}, \ + }; \ + \ + void \ + initname(void) \ + { \ + PyObject *codec; \ + PyObject *m = NULL, *mod = NULL, *o = NULL; \ + \ + m = Py_InitModule("_codecs_" #encoding STRICT_SUFX, __methods); + +#define MAPOPEN(locale) \ + mod = PyImport_ImportModule("_codecs_mapdata_" #locale);\ + if (mod == NULL) goto errorexit; \ + if ( +#define IMPORTMAP_ENCDEC(charset) \ + importmap(mod, "__map_" #charset, &charset##encmap, \ + &charset##decmap) || +#define IMPORTMAP_ENC(charset) \ + importmap(mod, "__map_" #charset, &charset##encmap, \ + NULL) || +#define IMPORTMAP_DEC(charset) \ + importmap(mod, "__map_" #charset, NULL, \ + &charset##decmap) || +#define MAPCLOSE() \ + 0) goto errorexit; \ + Py_DECREF(mod); + +#define END_CODEC_REGISTRY(encoding) \ + mod = PyImport_ImportModule("_multibytecodec"); \ + if (mod == NULL) goto errorexit; \ + o = PyObject_GetAttrString(mod, "__create_codec"); \ + if (o == NULL || !PyCallable_Check(o)) \ + goto errorexit; \ + \ + codec = createcodec(o, &__codec); \ + if (codec == NULL) \ + goto errorexit; \ + PyModule_AddObject(m, "codec", codec); \ + Py_DECREF(o); Py_DECREF(mod); \ + \ + if (PyErr_Occurred()) \ + Py_FatalError("can't initialize the _" #encoding \ + STRICT_SUFX " module"); \ + \ + return; \ + \ +errorexit: \ + Py_XDECREF(m); \ + Py_XDECREF(mod); \ + Py_XDECREF(o); \ +} + +#define CODEC_REGISTRY(encoding) \ + BEGIN_CODEC_REGISTRY(encoding) \ + END_CODEC_REGISTRY(encoding) + +#ifdef USING_BINARY_PAIR_SEARCH +static DBCHAR +find_pairencmap(ucs2_t body, ucs2_t modifier, + struct pair_encodemap *haystack, int haystacksize) +{ + int pos, min, max; + ucs4_t value = body << 16 | modifier; + + min = 0; + max = haystacksize; + + for (pos = haystacksize >> 1; min != max; pos = (min + max) >> 1) + if (value < haystack[pos].uniseq) { + if (max == pos) break; + else max = pos; + } else if (value > haystack[pos].uniseq) { + if (min == pos) break; + else min = pos; + } else + break; + + if (value == haystack[pos].uniseq) + return haystack[pos].code; + else + return DBCINV; +} +#endif + +#ifndef CODEC_WITHOUT_MAPS +static int +importmap(PyObject *mod, const char *symbol, + const struct unim_index **encmap, const struct dbcs_index **decmap) +{ + PyObject *o; + + o = PyObject_GetAttrString(mod, (char*)symbol); + if (o == NULL) + return -1; + else if (!PyCObject_Check(o)) { + PyErr_SetString(PyExc_ValueError, "map data must be a CObject."); + return -1; + } else { + struct dbcs_map *map; + map = PyCObject_AsVoidPtr(o); + if (encmap != NULL) + *encmap = map->encmap; + if (decmap != NULL) + *decmap = map->decmap; + Py_DECREF(o); + } + + return 0; +} +#endif + +static PyObject * +createcodec(PyObject *cofunc, MultibyteCodec *codec) +{ + PyObject *args, *r; + + args = PyTuple_New(1); + if (args == NULL) return NULL; + PyTuple_SET_ITEM(args, 0, PyCObject_FromVoidPtr(codec, NULL)); + + r = PyObject_CallObject(cofunc, args); + Py_DECREF(args); + + return r; +} |