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Add a format character %S to PyUnicode_FromFormat() that 

embeds the result of PyObject_Unicode() into the resulting
unicode string.
This commit is contained in:
Walter Dörwald 2007-05-23 21:02:42 +00:00
parent 6252e10ed9
commit 1be7e3f2ec
1 changed files with 22 additions and 7 deletions
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29
Objects/unicodeobject.c
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@ -504,14 +504,15 @@ PyUnicode_FromFormatV(const char *format, va_list vargs)
count = vargs;
#endif
#endif
/* step 1: count the number of %R format specifications
* (we call PyObject_Repr() for these objects once during step 3
* and put the result in an array) */
/* step 1: count the number of %S/%R format specifications
* (we call PyObject_Unicode()/PyObject_Repr() for these objects
* once during step 3 and put the result in an array) */
for (f = format; *f; f++) {
if (*f == '%' && *(f+1)=='R')
if (*f == '%' && (*(f+1)=='S' || *(f+1)=='R'))
++callcount;
}
/* step 2: allocate memory for the results of PyObject_Repr() calls */
/* step 2: allocate memory for the results of
* PyObject_Unicode()/PyObject_Repr() calls */
if (callcount) {
callresults = PyMem_Malloc(sizeof(PyObject *)*callcount);
if (!callresults) {
@ -558,6 +559,19 @@ PyUnicode_FromFormatV(const char *format, va_list vargs)
n += PyUnicode_GET_SIZE(obj);
break;
}
case 'S':
{
PyObject *obj = va_arg(count, PyObject *);
PyObject *str;
assert(obj);
str = PyObject_Unicode(obj);
if (!str)
goto fail;
n += PyUnicode_GET_SIZE(str);
/* Remember the str and switch to the next slot */
*callresult++ = str;
break;
}
case 'R':
{
PyObject *obj = va_arg(count, PyObject *);
@ -683,6 +697,7 @@ PyUnicode_FromFormatV(const char *format, va_list vargs)
*s++ = ucopy[upos++];
break;
}
case 'S':
case 'R':
{
/* unused, since we already have the result */
@ -692,9 +707,9 @@ PyUnicode_FromFormatV(const char *format, va_list vargs)
Py_ssize_t upos;
for (upos = 0; upos<usize;)
*s++ = ucopy[upos++];
/* We're done with the repr() => forget it */
/* We're done with the unicode()/repr() => forget it */
Py_DECREF(*callresult);
/* switch to next repr() result */
/* switch to next unicode()/repr() result */
++callresult;
break;
}