1/* stringlib: count implementation */
2
3#ifndef STRINGLIB_FASTSEARCH_H
4#error must include "stringlib/fastsearch.h" before including this module
5#endif
6
7Py_LOCAL_INLINE(Py_ssize_t)
8STRINGLIB(count)(const STRINGLIB_CHAR* str, Py_ssize_t str_len,
9                const STRINGLIB_CHAR* sub, Py_ssize_t sub_len,
10                Py_ssize_t maxcount)
11{
12    Py_ssize_t count;
13
14    if (str_len < 0)
15        return 0; /* start > len(str) */
16    if (sub_len == 0)
17        return (str_len < maxcount) ? str_len + 1 : maxcount;
18
19    count = FASTSEARCH(str, str_len, sub, sub_len, maxcount, FAST_COUNT);
20
21    if (count < 0)
22        return 0; /* no match */
23
24    return count;
25}
26
27
28