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Dropped support for all format specifiers except s in PyBytes_Format.

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This commit is contained in:
Daniele Varrazzo 2010-12-31 02:32:20 +01:00
parent 6882ac31d4
commit 2930ed3d59
1 changed files with 3 additions and 160 deletions
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163
psycopg/bytes_format.c
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@ -96,15 +96,7 @@ getnextarg(PyObject *args, Py_ssize_t arglen, Py_ssize_t *p_argidx)
return NULL;
}
/* fmt%(v1,v2,...) is roughly equivalent to sprintf(fmt, v1, v2, ...)
FORMATBUFLEN is the length of the buffer in which the ints &
chars are formatted. XXX This is a magic number. Each formatting
routine does bounds checking to ensure no overflow, but a better
solution may be to malloc a buffer of appropriate size for each
format. For now, the current solution is sufficient.
*/
#define FORMATBUFLEN (size_t)120
/* fmt%(v1,v2,...) is roughly equivalent to sprintf(fmt, v1, v2, ...) */
PyObject *
PyBytes_Format(PyObject *format, PyObject *args)
@ -153,15 +145,11 @@ PyBytes_Format(PyObject *format, PyObject *args)
}
else {
/* Got a format specifier */
int flags = 0;
Py_ssize_t width = -1;
int prec = -1;
int c = '\0';
int fill;
PyObject *v = NULL;
PyObject *temp = NULL;
char *pbuf;
int sign;
Py_ssize_t len;
fmt++;
if (*fmt == '(') {
@ -209,89 +197,9 @@ PyBytes_Format(PyObject *format, PyObject *args)
argidx = -2;
}
while (--fmtcnt >= 0) {
switch (c = *fmt++) {
case '-': flags |= F_LJUST; continue;
case '+': flags |= F_SIGN; continue;
case ' ': flags |= F_BLANK; continue;
case '#': flags |= F_ALT; continue;
case '0': flags |= F_ZERO; continue;
}
c = *fmt++;
break;
}
if (c == '*') {
v = getnextarg(args, arglen, &argidx);
if (v == NULL)
goto error;
if (!PyLong_Check(v)) {
PyErr_SetString(PyExc_TypeError,
"* wants int");
goto error;
}
width = PyLong_AsLong(v);
if (width < 0) {
flags |= F_LJUST;
width = -width;
}
if (--fmtcnt >= 0)
c = *fmt++;
}
else if (c >= 0 && isdigit(c)) {
width = c - '0';
while (--fmtcnt >= 0) {
c = Py_CHARMASK(*fmt++);
if (!isdigit(c))
break;
if ((width*10) / 10 != width) {
PyErr_SetString(
PyExc_ValueError,
"width too big");
goto error;
}
width = width*10 + (c - '0');
}
}
if (c == '.') {
prec = 0;
if (--fmtcnt >= 0)
c = *fmt++;
if (c == '*') {
v = getnextarg(args, arglen, &argidx);
if (v == NULL)
goto error;
if (!PyLong_Check(v)) {
PyErr_SetString(
PyExc_TypeError,
"* wants int");
goto error;
}
prec = PyLong_AsLong(v);
if (prec < 0)
prec = 0;
if (--fmtcnt >= 0)
c = *fmt++;
}
else if (c >= 0 && isdigit(c)) {
prec = c - '0';
while (--fmtcnt >= 0) {
c = Py_CHARMASK(*fmt++);
if (!isdigit(c))
break;
if ((prec*10) / 10 != prec) {
PyErr_SetString(
PyExc_ValueError,
"prec too big");
goto error;
}
prec = prec*10 + (c - '0');
}
}
} /* prec */
if (fmtcnt >= 0) {
if (c == 'h' || c == 'l' || c == 'L') {
if (--fmtcnt >= 0)
c = *fmt++;
}
}
if (fmtcnt < 0) {
PyErr_SetString(PyExc_ValueError,
"incomplete format");
@ -302,8 +210,6 @@ PyBytes_Format(PyObject *format, PyObject *args)
if (v == NULL)
goto error;
}
sign = 0;
fill = ' ';
switch (c) {
case '%':
pbuf = "%";
@ -319,22 +225,8 @@ PyBytes_Format(PyObject *format, PyObject *args)
}
temp = v;
Py_INCREF(v);
/* Fall through */
case 'r':
if (c == 'r')
temp = PyObject_Repr(v);
if (temp == NULL)
goto error;
if (!PyBytes_Check(temp)) {
PyErr_SetString(PyExc_TypeError,
"%s argument has non-string str()");
Py_DECREF(temp);
goto error;
}
pbuf = PyBytes_AS_STRING(temp);
len = PyBytes_GET_SIZE(temp);
if (prec >= 0 && len > prec)
len = prec;
break;
default:
PyErr_Format(PyExc_ValueError,
@ -345,21 +237,9 @@ PyBytes_Format(PyObject *format, PyObject *args)
PyBytes_AsString(format)));
goto error;
}
if (sign) {
if (*pbuf == '-' || *pbuf == '+') {
sign = *pbuf++;
len--;
}
else if (flags & F_SIGN)
sign = '+';
else if (flags & F_BLANK)
sign = ' ';
else
sign = 0;
}
if (width < len)
width = len;
if (rescnt - (sign != 0) < width) {
if (rescnt < width) {
reslen -= rescnt;
rescnt = width + fmtcnt + 100;
reslen += rescnt;
@ -375,43 +255,6 @@ PyBytes_Format(PyObject *format, PyObject *args)
res = PyBytes_AS_STRING(result)
+ reslen - rescnt;
}
if (sign) {
if (fill != ' ')
*res++ = sign;
rescnt--;
if (width > len)
width--;
}
if ((flags & F_ALT) && (c == 'x' || c == 'X')) {
assert(pbuf[0] == '0');
assert(pbuf[1] == c);
if (fill != ' ') {
*res++ = *pbuf++;
*res++ = *pbuf++;
}
rescnt -= 2;
width -= 2;
if (width < 0)
width = 0;
len -= 2;
}
if (width > len && !(flags & F_LJUST)) {
do {
--rescnt;
*res++ = fill;
} while (--width > len);
}
if (fill == ' ') {
if (sign)
*res++ = sign;
if ((flags & F_ALT) &&
(c == 'x' || c == 'X')) {
assert(pbuf[0] == '0');
assert(pbuf[1] == c);
*res++ = *pbuf++;
*res++ = *pbuf++;
}
}
Py_MEMCPY(res, pbuf, len);
res += len;
rescnt -= len;