cpython/Objects/stringlib/count.h at 3.6 · python/cpython · GitHub

27 lines (19 loc) · 666 Bytes

/* stringlib: count implementation */

#ifndef STRINGLIB_FASTSEARCH_H

#error must include "stringlib/fastsearch.h" before including this module

#endif

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)

{

Py_ssize_t count;

if (str_len < 0)

return 0; /* start > len(str) */

if (sub_len == 0)

return (str_len < maxcount) ? str_len + 1 : maxcount;

count = FASTSEARCH(str, str_len, sub, sub_len, maxcount, FAST_COUNT);

if (count < 0)

return 0; /* no match */

return count;

}

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