mirror of
https://github.com/python/cpython.git
synced 2025-11-03 07:01:21 +00:00
50 lines
1 KiB
C
50 lines
1 KiB
C
|
/* stringlib: find/index implementation */
|
||
|
|
|
||
|
|
#ifndef STRINGLIB_FIND_H
|
||
|
|
#define STRINGLIB_FIND_H
|
||
|
|
|
||
|
|
#ifndef STRINGLIB_FASTSEARCH_H
|
||
|
|
#error must include "stringlib/fastsearch.h" before including this module
|
||
|
|
#endif
|
||
|
|
|
||
|
|
Py_LOCAL(Py_ssize_t)
|
||
|
|
stringlib_find(const STRINGLIB_CHAR* str, Py_ssize_t str_len,
|
||
|
|
const STRINGLIB_CHAR* sub, Py_ssize_t sub_len)
|
||
|
|
{
|
||
|
|
if (sub_len == 0)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
return fastsearch(str, str_len, sub, sub_len, FAST_SEARCH);
|
||
|
|
}
|
||
|
|
|
||
|
|
Py_LOCAL(Py_ssize_t)
|
||
|
|
stringlib_rfind(const STRINGLIB_CHAR* str, Py_ssize_t str_len,
|
||
|
|
const STRINGLIB_CHAR* sub, Py_ssize_t sub_len)
|
||
|
|
{
|
||
|
|
Py_ssize_t pos;
|
||
|
|
|
||
|
|
/* XXX - create reversefastsearch helper! */
|
||
|
|
if (sub_len == 0)
|
||
|
|
pos = str_len;
|
||
|
|
else {
|
||
|
|
Py_ssize_t j;
|
||
|
|
pos = -1;
|
||
|
|
for (j = str_len - sub_len; j >= 0; --j)
|
||
|
|
if (STRINGLIB_CMP(str+j, sub, sub_len) == 0) {
|
||
|
|
pos = j;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return pos;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
Local variables:
|
||
|
|
c-basic-offset: 4
|
||
|
|
indent-tabs-mode: nil
|
||
|
|
End:
|
||
|
|
*/
|