[Python-checkins] CVS: python/dist/src/Python getargs.c,2.26,2.27
Guido van Rossum
python-dev@python.org
2000年3月24日 17:14:22 -0500 (EST)
Update of /projects/cvsroot/python/dist/src/Python
In directory eric:/home/guido/hp/mal/py-patched/Python
Modified Files:
getargs.c
Log Message:
Marc-Andre Lemburg:
Attached you find the latest update of the Unicode implementation.
The patch is against the current CVS version.
It includes the fix I posted yesterday for the core dump problem
in codecs.c (was introduced by my previous patch set -- sorry),
adds more tests for the codecs and two new parser markers
"es" and "es#".
Index: getargs.c
===================================================================
RCS file: /projects/cvsroot/python/dist/src/Python/getargs.c,v
retrieving revision 2.26
retrieving revision 2.27
diff -C2 -r2.26 -r2.27
*** getargs.c 2000年03月10日 23:02:17 2.26
--- getargs.c 2000年03月24日 22:14:19 2.27
***************
*** 179,182 ****
--- 179,184 ----
else if (level != 0)
; /* Pass */
+ else if (c == 'e')
+ ; /* Pass */
else if (isalpha(c))
max++;
***************
*** 655,658 ****
--- 657,776 ----
}
+ case 'e': /* encoded string */
+ {
+ char **buffer;
+ const char *encoding;
+ PyObject *u, *s;
+ int size;
+
+ /* Get 'e' parameter: the encoding name */
+ encoding = (const char *)va_arg(*p_va, const char *);
+ if (encoding == NULL)
+ return "(encoding is NULL)";
+
+ /* Get 's' parameter: the output buffer to use */
+ if (*format != 's')
+ return "(unkown parser marker combination)";
+ buffer = (char **)va_arg(*p_va, char **);
+ format++;
+ if (buffer == NULL)
+ return "(buffer is NULL)";
+
+ /* Convert object to Unicode */
+ u = PyUnicode_FromObject(arg);
+ if (u == NULL)
+ return "string, unicode or text buffer";
+
+ /* Encode object; use default error handling */
+ s = PyUnicode_AsEncodedString(u,
+ encoding,
+ NULL);
+ Py_DECREF(u);
+ if (s == NULL)
+ return "(encoding failed)";
+ if (!PyString_Check(s)) {
+ Py_DECREF(s);
+ return "(encoder failed to return a string)";
+ }
+ size = PyString_GET_SIZE(s);
+
+ /* Write output; output is guaranteed to be
+ 0-terminated */
+ if (*format == '#') {
+ /* Using buffer length parameter '#':
+
+ - if *buffer is NULL, a new buffer
+ of the needed size is allocated and
+ the data copied into it; *buffer is
+ updated to point to the new buffer;
+ the caller is responsible for
+ free()ing it after usage
+
+ - if *buffer is not NULL, the data
+ is copied to *buffer; *buffer_len
+ has to be set to the size of the
+ buffer on input; buffer overflow is
+ signalled with an error; buffer has
+ to provide enough room for the
+ encoded string plus the trailing
+ 0-byte
+
+ - in both cases, *buffer_len is
+ updated to the size of the buffer
+ /excluding/ the trailing 0-byte
+
+ */
+ int *buffer_len = va_arg(*p_va, int *);
+
+ format++;
+ if (buffer_len == NULL)
+ return "(buffer_len is NULL)";
+ if (*buffer == NULL) {
+ *buffer = PyMem_NEW(char, size + 1);
+ if (*buffer == NULL) {
+ Py_DECREF(s);
+ return "(memory error)";
+ }
+ } else {
+ if (size + 1 > *buffer_len) {
+ Py_DECREF(s);
+ return "(buffer overflow)";
+ }
+ }
+ memcpy(*buffer,
+ PyString_AS_STRING(s),
+ size + 1);
+ *buffer_len = size;
+ } else {
+ /* Using a 0-terminated buffer:
+
+ - the encoded string has to be
+ 0-terminated for this variant to
+ work; if it is not, an error raised
+
+ - a new buffer of the needed size
+ is allocated and the data copied
+ into it; *buffer is updated to
+ point to the new buffer; the caller
+ is responsible for free()ing it
+ after usage
+
+ */
+ if (strlen(PyString_AS_STRING(s)) != size)
+ return "(encoded string without "\
+ "NULL bytes)";
+ *buffer = PyMem_NEW(char, size + 1);
+ if (*buffer == NULL) {
+ Py_DECREF(s);
+ return "(memory error)";
+ }
+ memcpy(*buffer,
+ PyString_AS_STRING(s),
+ size + 1);
+ }
+ Py_DECREF(s);
+ break;
+ }
+
case 'S': /* string object */
{