1 /* stringlib: count implementation */
2
3 #ifndef STRINGLIB_COUNT_H
4 #define STRINGLIB_COUNT_H
5
6 #ifndef STRINGLIB_FASTSEARCH_H
7 #error must include "stringlib/fastsearch.h" before including this module
8 #endif
9
10 Py_LOCAL_INLINE(Py_ssize_t)
stringlib_count(const STRINGLIB_CHAR * str,Py_ssize_t str_len,const STRINGLIB_CHAR * sub,Py_ssize_t sub_len,Py_ssize_t maxcount)11 stringlib_count(const STRINGLIB_CHAR* str, Py_ssize_t str_len,
12 const STRINGLIB_CHAR* sub, Py_ssize_t sub_len,
13 Py_ssize_t maxcount)
14 {
15 Py_ssize_t count;
16
17 if (str_len < 0)
18 return 0; /* start > len(str) */
19 if (sub_len == 0)
20 return (str_len < maxcount) ? str_len + 1 : maxcount;
21
22 count = fastsearch(str, str_len, sub, sub_len, maxcount, FAST_COUNT);
23
24 if (count < 0)
25 return 0; /* no match */
26
27 return count;
28 }
29
30 #endif
31