PEP 293 implemention (from SF patch http://www.python.org/sf/432401)

Python/codecs.c

@@ -422,12 +422,409 @@ PyObject *PyCodec_Decode(PyObject *object,
     return NULL;
 }
 
+static PyObject *_PyCodec_ErrorRegistry;
+
+/* Register the error handling callback function error under the name
+   name. This function will be called by the codec when it encounters
+   an 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 */
+int PyCodec_RegisterError(const char *name, PyObject *error)
+{
+    if (!PyCallable_Check(error)) {
+	PyErr_SetString(PyExc_TypeError, "handler must be callable");
+	return -1;
+    }
+    return PyDict_SetItemString( _PyCodec_ErrorRegistry, (char *)name, error);
+}
+
+/* Lookup the error handling callback function registered under the
+   name error. As a special case NULL can be passed, in which case
+   the error handling callback for strict encoding will be returned. */
+PyObject *PyCodec_LookupError(const char *name)
+{
+    PyObject *handler = NULL;
+
+    if (name==NULL)
+	name = "strict";
+    handler = PyDict_GetItemString(_PyCodec_ErrorRegistry, (char *)name);
+    if (!handler)
+	PyErr_Format(PyExc_LookupError, "unknown error handler name '%.400s'", name);
+    else
+	Py_INCREF(handler);
+    return handler;
+}
+
+static void wrong_exception_type(PyObject *exc)
+{
+    PyObject *type = PyObject_GetAttrString(exc, "__class__");
+    if (type != NULL) {
+	PyObject *name = PyObject_GetAttrString(type, "__name__");
+	Py_DECREF(type);
+	if (name != NULL) {
+	    PyObject *string = PyObject_Str(name);
+	    Py_DECREF(name);
+	    PyErr_Format(PyExc_TypeError, "don't know how to handle %.400s in error callback",
+		PyString_AS_STRING(string));
+	    Py_DECREF(string);
+	}
+    }
+}
+
+PyObject *PyCodec_StrictErrors(PyObject *exc)
+{
+    if (PyInstance_Check(exc))
+	PyErr_SetObject((PyObject*)((PyInstanceObject*)exc)->in_class,
+	    exc);
+    else
+	PyErr_SetString(PyExc_TypeError, "codec must pass exception instance");
+    return NULL;
+}
+
+
+PyObject *PyCodec_IgnoreErrors(PyObject *exc)
+{
+    int end;
+    if (PyObject_IsInstance(exc, PyExc_UnicodeEncodeError)) {
+	if (PyUnicodeEncodeError_GetEnd(exc, &end))
+	    return NULL;
+    }
+    else if (PyObject_IsInstance(exc, PyExc_UnicodeDecodeError)) {
+	if (PyUnicodeDecodeError_GetEnd(exc, &end))
+	    return NULL;
+    }
+    else if (PyObject_IsInstance(exc, PyExc_UnicodeTranslateError)) {
+	if (PyUnicodeTranslateError_GetEnd(exc, &end))
+	    return NULL;
+    }
+    else {
+	wrong_exception_type(exc);
+	return NULL;
+    }
+    /* ouch: passing NULL, 0, pos gives None instead of u'' */
+    return Py_BuildValue("(u#i)", &end, 0, end);
+}
+
+
+PyObject *PyCodec_ReplaceErrors(PyObject *exc)
+{
+    PyObject *restuple;
+    int start;
+    int end;
+    int i;
+
+    if (PyObject_IsInstance(exc, PyExc_UnicodeEncodeError)) {
+	PyObject *res;
+	Py_UNICODE *p;
+	if (PyUnicodeEncodeError_GetStart(exc, &start))
+	    return NULL;
+	if (PyUnicodeEncodeError_GetEnd(exc, &end))
+	    return NULL;
+	res = PyUnicode_FromUnicode(NULL, end-start);
+	if (res == NULL)
+	    return NULL;
+	for (p = PyUnicode_AS_UNICODE(res), i = start;
+	    i<end; ++p, ++i)
+	    *p = '?';
+	restuple = Py_BuildValue("(Oi)", res, end);
+	Py_DECREF(res);
+	return restuple;
+    }
+    else if (PyObject_IsInstance(exc, PyExc_UnicodeDecodeError)) {
+	Py_UNICODE res = Py_UNICODE_REPLACEMENT_CHARACTER;
+	if (PyUnicodeDecodeError_GetEnd(exc, &end))
+	    return NULL;
+	return Py_BuildValue("(u#i)", &res, 1, end);
+    }
+    else if (PyObject_IsInstance(exc, PyExc_UnicodeTranslateError)) {
+	PyObject *res;
+	Py_UNICODE *p;
+	if (PyUnicodeTranslateError_GetStart(exc, &start))
+	    return NULL;
+	if (PyUnicodeTranslateError_GetEnd(exc, &end))
+	    return NULL;
+	res = PyUnicode_FromUnicode(NULL, end-start);
+	if (res == NULL)
+	    return NULL;
+	for (p = PyUnicode_AS_UNICODE(res), i = start;
+	    i<end; ++p, ++i)
+	    *p = Py_UNICODE_REPLACEMENT_CHARACTER;
+	restuple = Py_BuildValue("(Oi)", res, end);
+	Py_DECREF(res);
+	return restuple;
+    }
+    else {
+	wrong_exception_type(exc);
+	return NULL;
+    }
+}
+
+PyObject *PyCodec_XMLCharRefReplaceErrors(PyObject *exc)
+{
+    if (PyObject_IsInstance(exc, PyExc_UnicodeEncodeError)) {
+	PyObject *restuple;
+	PyObject *object;
+	int start;
+	int end;
+	PyObject *res;
+	Py_UNICODE *p;
+	Py_UNICODE *startp;
+	Py_UNICODE *outp;
+	int ressize;
+	if (PyUnicodeEncodeError_GetStart(exc, &start))
+	    return NULL;
+	if (PyUnicodeEncodeError_GetEnd(exc, &end))
+	    return NULL;
+	if (!(object = PyUnicodeEncodeError_GetObject(exc)))
+	    return NULL;
+	startp = PyUnicode_AS_UNICODE(object);
+	for (p = startp+start, ressize = 0; p < startp+end; ++p) {
+	    if (*p<10)
+		ressize += 2+1+1;
+	    else if (*p<100)
+		ressize += 2+2+1;
+	    else if (*p<1000)
+		ressize += 2+3+1;
+	    else if (*p<10000)
+		ressize += 2+4+1;
+	    else if (*p<100000)
+		ressize += 2+5+1;
+	    else if (*p<1000000)
+		ressize += 2+6+1;
+	    else
+		ressize += 2+7+1;
+	}
+	/* allocate replacement */
+	res = PyUnicode_FromUnicode(NULL, ressize);
+	if (res == NULL) {
+	    Py_DECREF(object);
+	    return NULL;
+	}
+	/* generate replacement */
+	for (p = startp+start, outp = PyUnicode_AS_UNICODE(res);
+	    p < startp+end; ++p) {
+	    Py_UNICODE c = *p;
+	    int digits;
+	    int base;
+	    *outp++ = '&';
+	    *outp++ = '#';
+	    if (*p<10) {
+		digits = 1;
+		base = 1;
+	    }
+	    else if (*p<100) {
+		digits = 2;
+		base = 10;
+	    }
+	    else if (*p<1000) {
+		digits = 3;
+		base = 100;
+	    }
+	    else if (*p<10000) {
+		digits = 4;
+		base = 1000;
+	    }
+	    else if (*p<100000) {
+		digits = 5;
+		base = 10000;
+	    }
+	    else if (*p<1000000) {
+		digits = 6;
+		base = 100000;
+	    }
+	    else {
+		digits = 7;
+		base = 1000000;
+	    }
+	    while (digits-->0) {
+		*outp++ = '0' + c/base;
+		c %= base;
+		base /= 10;
+	    }
+	    *outp++ = ';';
+	}
+	restuple = Py_BuildValue("(Oi)", res, end);
+	Py_DECREF(res);
+	Py_DECREF(object);
+	return restuple;
+    }
+    else {
+	wrong_exception_type(exc);
+	return NULL;
+    }
+}
+
+static Py_UNICODE hexdigits[] = {
+    '0', '1', '2', '3', '4', '5', '6', '7',
+    '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
+};
+
+PyObject *PyCodec_BackslashReplaceErrors(PyObject *exc)
+{
+    if (PyObject_IsInstance(exc, PyExc_UnicodeEncodeError)) {
+	PyObject *restuple;
+	PyObject *object;
+	int start;
+	int end;
+	PyObject *res;
+	Py_UNICODE *p;
+	Py_UNICODE *startp;
+	Py_UNICODE *outp;
+	int ressize;
+	if (PyUnicodeEncodeError_GetStart(exc, &start))
+	    return NULL;
+	if (PyUnicodeEncodeError_GetEnd(exc, &end))
+	    return NULL;
+	if (!(object = PyUnicodeEncodeError_GetObject(exc)))
+	    return NULL;
+	startp = PyUnicode_AS_UNICODE(object);
+	for (p = startp+start, ressize = 0; p < startp+end; ++p) {
+	    if (*p >= 0x00010000)
+		ressize += 1+1+8;
+	    else if (*p >= 0x100) {
+		ressize += 1+1+4;
+	    }
+	    else
+		ressize += 1+1+2;
+	}
+	res = PyUnicode_FromUnicode(NULL, ressize);
+	if (res==NULL)
+	    return NULL;
+	for (p = startp+start, outp = PyUnicode_AS_UNICODE(res);
+	    p < startp+end; ++p) {
+	    Py_UNICODE c = *p;
+	    *outp++ = '\\';
+	    if (c >= 0x00010000) {
+		*outp++ = 'U';
+		*outp++ = hexdigits[(c>>28)&0xf];
+		*outp++ = hexdigits[(c>>24)&0xf];
+		*outp++ = hexdigits[(c>>20)&0xf];
+		*outp++ = hexdigits[(c>>16)&0xf];
+		*outp++ = hexdigits[(c>>12)&0xf];
+		*outp++ = hexdigits[(c>>8)&0xf];
+	    }
+	    else if (c >= 0x100) {
+		*outp++ = 'u';
+		*outp++ = hexdigits[(c>>12)&0xf];
+		*outp++ = hexdigits[(c>>8)&0xf];
+	    }
+	    else
+		*outp++ = 'x';
+	    *outp++ = hexdigits[(c>>4)&0xf];
+	    *outp++ = hexdigits[c&0xf];
+	}
+
+	restuple = Py_BuildValue("(Oi)", res, end);
+	Py_DECREF(res);
+	Py_DECREF(object);
+	return restuple;
+    }
+    else {
+	wrong_exception_type(exc);
+	return NULL;
+    }
+}
+
+static PyObject *strict_errors(PyObject *self, PyObject *exc)
+{
+    return PyCodec_StrictErrors(exc);
+}
+
+
+static PyObject *ignore_errors(PyObject *self, PyObject *exc)
+{
+    return PyCodec_IgnoreErrors(exc);
+}
+
+
+static PyObject *replace_errors(PyObject *self, PyObject *exc)
+{
+    return PyCodec_ReplaceErrors(exc);
+}
+
+
+static PyObject *xmlcharrefreplace_errors(PyObject *self, PyObject *exc)
+{
+    return PyCodec_XMLCharRefReplaceErrors(exc);
+}
+
+
+static PyObject *backslashreplace_errors(PyObject *self, PyObject *exc)
+{
+    return PyCodec_BackslashReplaceErrors(exc);
+}
+
+
 void _PyCodecRegistry_Init(void)
 {
+    static struct {
+	char *name;
+	PyMethodDef def;
+    } methods[] =
+    {
+	{
+	    "strict",
+	    {
+		"strict_errors",
+		strict_errors,
+		METH_O
+	    }
+	},
+	{
+	    "ignore",
+	    {
+		"ignore_errors",
+		ignore_errors,
+		METH_O
+	    }
+	},
+	{
+	    "replace",
+	    {
+		"replace_errors",
+		replace_errors,
+		METH_O
+	    }
+	},
+	{
+	    "xmlcharrefreplace",
+	    {
+		"xmlcharrefreplace_errors",
+		xmlcharrefreplace_errors,
+		METH_O
+	    }
+	},
+	{
+	    "backslashreplace",
+	    {
+		"backslashreplace_errors",
+		backslashreplace_errors,
+		METH_O
+	    }
+	}
+    };
     if (_PyCodec_SearchPath == NULL)
 	_PyCodec_SearchPath = PyList_New(0);
     if (_PyCodec_SearchCache == NULL)
 	_PyCodec_SearchCache = PyDict_New();
+    if (_PyCodec_ErrorRegistry == NULL) {
+	int i;
+	_PyCodec_ErrorRegistry = PyDict_New();
+
+	if (_PyCodec_ErrorRegistry) {
+	    for (i = 0; i < 5; ++i) {
+		PyObject *func = PyCFunction_New(&methods[i].def, NULL);
+		int res;
+		if (!func)
+		    Py_FatalError("can't initialize codec error registry");
+		res = PyCodec_RegisterError(methods[i].name, func);
+		Py_DECREF(func);
+		if (res)
+		    Py_FatalError("can't initialize codec error registry");
+	    }
+	}
+    }
     if (_PyCodec_SearchPath == NULL || 
 	_PyCodec_SearchCache == NULL)
 	Py_FatalError("can't initialize codec registry");
@@ -439,4 +836,6 @@ void _PyCodecRegistry_Fini(void)
     _PyCodec_SearchPath = NULL;
     Py_XDECREF(_PyCodec_SearchCache);
     _PyCodec_SearchCache = NULL;
+    Py_XDECREF(_PyCodec_ErrorRegistry);
+    _PyCodec_ErrorRegistry = NULL;
 }

Python/exceptions.c

@@ -100,6 +100,10 @@ Exception\n\
  |    +-- ValueError\n\
  |    |    |\n\
  |    |    +-- UnicodeError\n\
+ |    |        |\n\
+ |    |        +-- UnicodeEncodeError\n\
+ |    |        +-- UnicodeDecodeError\n\
+ |    |        +-- UnicodeTranslateError\n\
  |    |\n\
  |    +-- ReferenceError\n\
  |    +-- SystemError\n\
@@ -840,6 +844,590 @@ static PyMethodDef SyntaxError_methods[] = {
 };
 
 
+static
+int get_int(PyObject *exc, const char *name, int *value)
+{
+    PyObject *attr = PyObject_GetAttrString(exc, (char *)name);
+
+    if (!attr)
+	return -1;
+    if (!PyInt_Check(attr)) {
+	PyErr_Format(PyExc_TypeError, "%s attribute must be int", name);
+	Py_DECREF(attr);
+	return -1;
+    }
+    *value = PyInt_AS_LONG(attr);
+    Py_DECREF(attr);
+    return 0;
+}
+
+
+static
+int set_int(PyObject *exc, const char *name, int value)
+{
+    PyObject *obj = PyInt_FromLong(value);
+    int result;
+
+    if (!obj)
+	return -1;
+    result = PyObject_SetAttrString(exc, (char *)name, obj);
+    Py_DECREF(obj);
+    return result;
+}
+
+
+static
+PyObject *get_string(PyObject *exc, const char *name)
+{
+    PyObject *attr = PyObject_GetAttrString(exc, (char *)name);
+
+    if (!attr)
+	return NULL;
+    if (!PyString_Check(attr)) {
+	PyErr_Format(PyExc_TypeError, "%s attribute must be str", name);
+	Py_DECREF(attr);
+	return NULL;
+    }
+    return attr;
+}
+
+
+static
+int set_string(PyObject *exc, const char *name, const char *value)
+{
+    PyObject *obj = PyString_FromString(value);
+    int result;
+
+    if (!obj)
+	return -1;
+    result = PyObject_SetAttrString(exc, (char *)name, obj);
+    Py_DECREF(obj);
+    return result;
+}
+
+
+static
+PyObject *get_unicode(PyObject *exc, const char *name)
+{
+    PyObject *attr = PyObject_GetAttrString(exc, (char *)name);
+
+    if (!attr)
+	return NULL;
+    if (!PyUnicode_Check(attr)) {
+	PyErr_Format(PyExc_TypeError, "%s attribute must be unicode", name);
+	Py_DECREF(attr);
+	return NULL;
+    }
+    return attr;
+}
+
+PyObject * PyUnicodeEncodeError_GetEncoding(PyObject *exc)
+{
+    return get_string(exc, "encoding");
+}
+
+PyObject * PyUnicodeDecodeError_GetEncoding(PyObject *exc)
+{
+    return get_string(exc, "encoding");
+}
+
+PyObject * PyUnicodeTranslateError_GetEncoding(PyObject *exc)
+{
+    return get_string(exc, "encoding");
+}
+
+PyObject *PyUnicodeEncodeError_GetObject(PyObject *exc)
+{
+    return get_unicode(exc, "object");
+}
+
+PyObject *PyUnicodeDecodeError_GetObject(PyObject *exc)
+{
+    return get_string(exc, "object");
+}
+
+PyObject *PyUnicodeTranslateError_GetObject(PyObject *exc)
+{
+    return get_unicode(exc, "object");
+}
+
+int PyUnicodeEncodeError_GetStart(PyObject *exc, int *start)
+{
+    if (!get_int(exc, "start", start)) {
+	PyObject *object = PyUnicodeEncodeError_GetObject(exc);
+	int size;
+	if (!object)
+	    return -1;
+	size = PyUnicode_GET_SIZE(object);
+	if (*start<0)
+	    *start = 0;
+	if (*start>=size)
+	    *start = size-1;
+	Py_DECREF(object);
+	return 0;
+    }
+    return -1;
+}
+
+
+int PyUnicodeDecodeError_GetStart(PyObject *exc, int *start)
+{
+    if (!get_int(exc, "start", start)) {
+	PyObject *object = PyUnicodeDecodeError_GetObject(exc);
+	int size;
+	if (!object)
+	    return -1;
+	size = PyString_GET_SIZE(object);
+	if (*start<0)
+	    *start = 0;
+	if (*start>=size)
+	    *start = size-1;
+	Py_DECREF(object);
+	return 0;
+    }
+    return -1;
+}
+
+
+int PyUnicodeTranslateError_GetStart(PyObject *exc, int *start)
+{
+    return PyUnicodeEncodeError_GetStart(exc, start);
+}
+
+
+int PyUnicodeEncodeError_SetStart(PyObject *exc, int start)
+{
+    return set_int(exc, "start", start);
+}
+
+
+int PyUnicodeDecodeError_SetStart(PyObject *exc, int start)
+{
+    return set_int(exc, "start", start);
+}
+
+
+int PyUnicodeTranslateError_SetStart(PyObject *exc, int start)
+{
+    return set_int(exc, "start", start);
+}
+
+
+int PyUnicodeEncodeError_GetEnd(PyObject *exc, int *end)
+{
+    if (!get_int(exc, "end", end)) {
+	PyObject *object = PyUnicodeEncodeError_GetObject(exc);
+	int size;
+	if (!object)
+	    return -1;
+	size = PyUnicode_GET_SIZE(object);
+	if (*end<1)
+	    *end = 1;
+	if (*end>size)
+	    *end = size;
+	Py_DECREF(object);
+	return 0;
+    }
+    return -1;
+}
+
+
+int PyUnicodeDecodeError_GetEnd(PyObject *exc, int *end)
+{
+    if (!get_int(exc, "end", end)) {
+	PyObject *object = PyUnicodeDecodeError_GetObject(exc);
+	int size;
+	if (!object)
+	    return -1;
+	size = PyString_GET_SIZE(object);
+	if (*end<1)
+	    *end = 1;
+	if (*end>size)
+	    *end = size;
+	Py_DECREF(object);
+	return 0;
+    }
+    return -1;
+}
+
+
+int PyUnicodeTranslateError_GetEnd(PyObject *exc, int *start)
+{
+    return PyUnicodeEncodeError_GetEnd(exc, start);
+}
+
+
+int PyUnicodeEncodeError_SetEnd(PyObject *exc, int end)
+{
+    return set_int(exc, "end", end);
+}
+
+
+int PyUnicodeDecodeError_SetEnd(PyObject *exc, int end)
+{
+    return set_int(exc, "end", end);
+}
+
+
+int PyUnicodeTranslateError_SetEnd(PyObject *exc, int end)
+{
+    return set_int(exc, "end", end);
+}
+
+
+PyObject *PyUnicodeEncodeError_GetReason(PyObject *exc)
+{
+    return get_string(exc, "reason");
+}
+
+
+PyObject *PyUnicodeDecodeError_GetReason(PyObject *exc)
+{
+    return get_string(exc, "reason");
+}
+
+
+PyObject *PyUnicodeTranslateError_GetReason(PyObject *exc)
+{
+    return get_string(exc, "reason");
+}
+
+
+int PyUnicodeEncodeError_SetReason(PyObject *exc, const char *reason)
+{
+    return set_string(exc, "reason", reason);
+}
+
+
+int PyUnicodeDecodeError_SetReason(PyObject *exc, const char *reason)
+{
+    return set_string(exc, "reason", reason);
+}
+
+
+int PyUnicodeTranslateError_SetReason(PyObject *exc, const char *reason)
+{
+    return set_string(exc, "reason", reason);
+}
+
+
+static PyObject *
+UnicodeError__init__(PyObject *self, PyObject *args, PyTypeObject *objecttype)
+{
+    PyObject *rtnval = NULL;
+    PyObject *encoding;
+    PyObject *object;
+    PyObject *start;
+    PyObject *end;
+    PyObject *reason;
+
+    if (!(self = get_self(args)))
+	return NULL;
+
+    if (!(args = PySequence_GetSlice(args, 1, PySequence_Size(args))))
+	return NULL;
+
+    if (!PyArg_ParseTuple(args, "O!O!O!O!O!",
+	&PyString_Type, &encoding,
+	objecttype, &object,
+	&PyInt_Type, &start,
+	&PyInt_Type, &end,
+	&PyString_Type, &reason))
+	return NULL;
+
+    if (PyObject_SetAttrString(self, "args", args))
+	goto finally;
+
+    if (PyObject_SetAttrString(self, "encoding", encoding))
+	goto finally;
+    if (PyObject_SetAttrString(self, "object", object))
+	goto finally;
+    if (PyObject_SetAttrString(self, "start", start))
+	goto finally;
+    if (PyObject_SetAttrString(self, "end", end))
+	goto finally;
+    if (PyObject_SetAttrString(self, "reason", reason))
+	goto finally;
+
+    Py_INCREF(Py_None);
+    rtnval = Py_None;
+
+  finally:
+    Py_DECREF(args);
+    return rtnval;
+}
+
+
+static PyObject *
+UnicodeEncodeError__init__(PyObject *self, PyObject *args)
+{
+    return UnicodeError__init__(self, args, &PyUnicode_Type);
+}
+
+static PyObject *
+UnicodeEncodeError__str__(PyObject *self, PyObject *arg)
+{
+    PyObject *encodingObj = NULL;
+    PyObject *objectObj = NULL;
+    int length;
+    int start;
+    int end;
+    PyObject *reasonObj = NULL;
+    char buffer[1000];
+    PyObject *result = NULL;
+
+    self = arg;
+
+    if (!(encodingObj = PyUnicodeEncodeError_GetEncoding(self)))
+	goto error;
+
+    if (!(objectObj = PyUnicodeEncodeError_GetObject(self)))
+	goto error;
+
+    length = PyUnicode_GET_SIZE(objectObj);
+
+    if (PyUnicodeEncodeError_GetStart(self, &start))
+	goto error;
+
+    if (PyUnicodeEncodeError_GetEnd(self, &end))
+	goto error;
+
+    if (!(reasonObj = PyUnicodeEncodeError_GetReason(self)))
+	goto error;
+
+    if (end==start+1) {
+	PyOS_snprintf(buffer, sizeof(buffer),
+	    "'%.400s' codec can't encode character '\\u%x' in position %d: %.400s",
+	    PyString_AS_STRING(encodingObj),
+	    (int)PyUnicode_AS_UNICODE(objectObj)[start],
+	    start,
+	    PyString_AS_STRING(reasonObj)
+	);
+    }
+    else {
+	PyOS_snprintf(buffer, sizeof(buffer),
+	    "'%.400s' codec can't encode characters in position %d-%d: %.400s",
+	    PyString_AS_STRING(encodingObj),
+	    start,
+	    end-1,
+	    PyString_AS_STRING(reasonObj)
+	);
+    }
+    result = PyString_FromString(buffer);
+
+error:
+    Py_XDECREF(reasonObj);
+    Py_XDECREF(objectObj);
+    Py_XDECREF(encodingObj);
+    return result;
+}
+
+static PyMethodDef UnicodeEncodeError_methods[] = {
+    {"__init__", UnicodeEncodeError__init__, METH_VARARGS},
+    {"__str__",  UnicodeEncodeError__str__, METH_O},
+    {NULL, NULL}
+};
+
+
+PyObject * PyUnicodeEncodeError_Create(
+	const char *encoding, const Py_UNICODE *object, int length,
+	int start, int end, const char *reason)
+{
+    return PyObject_CallFunction(PyExc_UnicodeEncodeError, "su#iis",
+	encoding, object, length, start, end, reason);
+}
+
+
+static PyObject *
+UnicodeDecodeError__init__(PyObject *self, PyObject *args)
+{
+    return UnicodeError__init__(self, args, &PyString_Type);
+}
+
+static PyObject *
+UnicodeDecodeError__str__(PyObject *self, PyObject *arg)
+{
+    PyObject *encodingObj = NULL;
+    PyObject *objectObj = NULL;
+    int length;
+    int start;
+    int end;
+    PyObject *reasonObj = NULL;
+    char buffer[1000];
+    PyObject *result = NULL;
+
+    self = arg;
+
+    if (!(encodingObj = PyUnicodeDecodeError_GetEncoding(self)))
+	goto error;
+
+    if (!(objectObj = PyUnicodeDecodeError_GetObject(self)))
+	goto error;
+
+    length = PyString_GET_SIZE(objectObj);
+
+    if (PyUnicodeDecodeError_GetStart(self, &start))
+	goto error;
+
+    if (PyUnicodeDecodeError_GetEnd(self, &end))
+	goto error;
+
+    if (!(reasonObj = PyUnicodeDecodeError_GetReason(self)))
+	goto error;
+
+    if (end==start+1) {
+	PyOS_snprintf(buffer, sizeof(buffer),
+	    "'%.400s' codec can't decode byte 0x%x in position %d: %.400s",
+	    PyString_AS_STRING(encodingObj),
+	    ((int)PyString_AS_STRING(objectObj)[start])&0xff,
+	    start,
+	    PyString_AS_STRING(reasonObj)
+	);
+    }
+    else {
+	PyOS_snprintf(buffer, sizeof(buffer),
+	    "'%.400s' codec can't decode bytes in position %d-%d: %.400s",
+	    PyString_AS_STRING(encodingObj),
+	    start,
+	    end-1,
+	    PyString_AS_STRING(reasonObj)
+	);
+    }
+    result = PyString_FromString(buffer);
+
+error:
+    Py_XDECREF(reasonObj);
+    Py_XDECREF(objectObj);
+    Py_XDECREF(encodingObj);
+    return result;
+}
+
+static PyMethodDef UnicodeDecodeError_methods[] = {
+    {"__init__", UnicodeDecodeError__init__, METH_VARARGS},
+    {"__str__",  UnicodeDecodeError__str__, METH_O},
+    {NULL, NULL}
+};
+
+
+PyObject * PyUnicodeDecodeError_Create(
+	const char *encoding, const char *object, int length,
+	int start, int end, const char *reason)
+{
+    return PyObject_CallFunction(PyExc_UnicodeDecodeError, "ss#iis",
+	encoding, object, length, start, end, reason);
+}
+
+
+static PyObject *
+UnicodeTranslateError__init__(PyObject *self, PyObject *args)
+{
+    PyObject *rtnval = NULL;
+    PyObject *object;
+    PyObject *start;
+    PyObject *end;
+    PyObject *reason;
+
+    if (!(self = get_self(args)))
+	return NULL;
+
+    if (!(args = PySequence_GetSlice(args, 1, PySequence_Size(args))))
+	return NULL;
+
+    if (!PyArg_ParseTuple(args, "O!O!O!O!",
+	&PyUnicode_Type, &object,
+	&PyInt_Type, &start,
+	&PyInt_Type, &end,
+	&PyString_Type, &reason))
+	goto finally;
+
+    if (PyObject_SetAttrString(self, "args", args))
+	goto finally;
+
+    if (PyObject_SetAttrString(self, "object", object))
+	goto finally;
+    if (PyObject_SetAttrString(self, "start", start))
+	goto finally;
+    if (PyObject_SetAttrString(self, "end", end))
+	goto finally;
+    if (PyObject_SetAttrString(self, "reason", reason))
+	goto finally;
+
+    Py_INCREF(Py_None);
+    rtnval = Py_None;
+
+  finally:
+    Py_DECREF(args);
+    return rtnval;
+}
+
+
+static PyObject *
+UnicodeTranslateError__str__(PyObject *self, PyObject *arg)
+{
+    PyObject *objectObj = NULL;
+    int length;
+    int start;
+    int end;
+    PyObject *reasonObj = NULL;
+    char buffer[1000];
+    PyObject *result = NULL;
+
+    self = arg;
+
+    if (!(objectObj = PyUnicodeTranslateError_GetObject(self)))
+	goto error;
+
+    length = PyUnicode_GET_SIZE(objectObj);
+
+    if (PyUnicodeTranslateError_GetStart(self, &start))
+	goto error;
+
+    if (PyUnicodeTranslateError_GetEnd(self, &end))
+	goto error;
+
+    if (!(reasonObj = PyUnicodeTranslateError_GetReason(self)))
+	goto error;
+
+    if (end==start+1) {
+	PyOS_snprintf(buffer, sizeof(buffer),
+	    "can't translate character '\\u%x' in position %d: %.400s",
+	    (int)PyUnicode_AS_UNICODE(objectObj)[start],
+	    start,
+	    PyString_AS_STRING(reasonObj)
+	);
+    }
+    else {
+	PyOS_snprintf(buffer, sizeof(buffer),
+	    "can't translate characters in position %d-%d: %.400s",
+	    start,
+	    end-1,
+	    PyString_AS_STRING(reasonObj)
+	);
+    }
+    result = PyString_FromString(buffer);
+
+error:
+    Py_XDECREF(reasonObj);
+    Py_XDECREF(objectObj);
+    return result;
+}
+
+static PyMethodDef UnicodeTranslateError_methods[] = {
+    {"__init__", UnicodeTranslateError__init__, METH_VARARGS},
+    {"__str__",  UnicodeTranslateError__str__, METH_O},
+    {NULL, NULL}
+};
+
+
+PyObject * PyUnicodeTranslateError_Create(
+	const Py_UNICODE *object, int length,
+	int start, int end, const char *reason)
+{
+    return PyObject_CallFunction(PyExc_UnicodeTranslateError, "u#iis",
+	object, length, start, end, reason);
+}
+
+
 
 /* Exception doc strings */
 
@@ -865,6 +1453,12 @@ PyDoc_STRVAR(ValueError__doc__,
 
 PyDoc_STRVAR(UnicodeError__doc__, "Unicode related error.");
 
+PyDoc_STRVAR(UnicodeEncodeError__doc__, "Unicode encoding error.");
+
+PyDoc_STRVAR(UnicodeDecodeError__doc__, "Unicode decoding error.");
+
+PyDoc_STRVAR(UnicodeTranslateError__doc__, "Unicode translation error.");
+
 PyDoc_STRVAR(SystemError__doc__,
 "Internal error in the Python interpreter.\n\
 \n\
@@ -949,6 +1543,9 @@ PyObject *PyExc_SystemError;
 PyObject *PyExc_SystemExit;
 PyObject *PyExc_UnboundLocalError;
 PyObject *PyExc_UnicodeError;
+PyObject *PyExc_UnicodeEncodeError;
+PyObject *PyExc_UnicodeDecodeError;
+PyObject *PyExc_UnicodeTranslateError;
 PyObject *PyExc_TypeError;
 PyObject *PyExc_ValueError;
 PyObject *PyExc_ZeroDivisionError;
@@ -1035,6 +1632,12 @@ static struct {
   FloatingPointError__doc__},
  {"ValueError",   &PyExc_ValueError,  0, ValueError__doc__},
  {"UnicodeError", &PyExc_UnicodeError, &PyExc_ValueError, UnicodeError__doc__},
+ {"UnicodeEncodeError", &PyExc_UnicodeEncodeError, &PyExc_UnicodeError,
+  UnicodeEncodeError__doc__, UnicodeEncodeError_methods},
+ {"UnicodeDecodeError", &PyExc_UnicodeDecodeError, &PyExc_UnicodeError,
+  UnicodeDecodeError__doc__, UnicodeDecodeError_methods},
+ {"UnicodeTranslateError", &PyExc_UnicodeTranslateError, &PyExc_UnicodeError,
+  UnicodeTranslateError__doc__, UnicodeTranslateError_methods},
  {"ReferenceError",  &PyExc_ReferenceError, 0, ReferenceError__doc__},
  {"SystemError",  &PyExc_SystemError, 0, SystemError__doc__},
  {"MemoryError",  &PyExc_MemoryError, 0, MemoryError__doc__},