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Andrew Dalke's implementation of string.count().

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Guido van Rossum 1998-10-06 19:43:14 +00:00
parent 3836503acd
commit d5bcf9a343
1 changed files with 47 additions and 0 deletions
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47
Modules/stropmodule.c
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@ -617,6 +617,52 @@ strop_capitalize(self, args)
}
static char count__doc__[] =
"count(s, sub[, start[, end]]) -> int\n\
\n\
Return the number of occurrences of substring sub in string\n\
s[start:end]. Optional arguments start and end are\n\
interpreted as in slice notation.";
static PyObject *
strop_count(self, args)
PyObject *self; /* Not used */
PyObject *args;
{
char *s, *sub;
int len, n, j;
int i = 0, last = INT_MAX;
int m, r;
if (!PyArg_ParseTuple(args, "s#s#|ii", &s, &len, &sub, &n, &i, &last))
return NULL;
if (last > len)
last = len;
if (last < 0)
last += len;
if (last < 0)
last = 0;
if (i < 0)
i += len;
if (i < 0)
i = 0;
m = last + 1 - n;
if (n == 0)
return PyInt_FromLong((long) (m-i));
r = 0;
while (i < m) {
if (!memcmp(s+i, sub, n)) {
r++;
i += n;
} else {
i++;
}
}
return PyInt_FromLong((long) r);
}
static char swapcase__doc__[] =
"swapcase(s) -> string\n\
\n\
@ -1122,6 +1168,7 @@ strop_methods[] = {
{"atoi", strop_atoi, 1, atoi__doc__},
{"atol", strop_atol, 1, atol__doc__},
{"capitalize", strop_capitalize, 0, capitalize__doc__},
{"count", strop_count, 1, count__doc__},
{"find", strop_find, 1, find__doc__},
{"join", strop_joinfields, 1, joinfields__doc__},
{"joinfields", strop_joinfields, 1, joinfields__doc__},