blob: 163b0e8edc8577a23926ea9078fe9546faf4c1ab (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
// Helper functions for working with wcstring.
#include "config.h" // IWYU pragma: keep
#include "common.h"
#include "wcstringutil.h"
typedef wcstring::size_type size_type;
wcstring_range wcstring_tok(wcstring& str, const wcstring& needle, wcstring_range last) {
size_type pos = last.second == wcstring::npos ? wcstring::npos : last.first;
if (pos != wcstring::npos && last.second != wcstring::npos) pos += last.second;
if (pos != wcstring::npos && pos != 0) ++pos;
if (pos == wcstring::npos || pos >= str.size()) {
return std::make_pair(wcstring::npos, wcstring::npos);
}
if (needle.empty()) {
return std::make_pair(pos, wcstring::npos);
}
pos = str.find_first_not_of(needle, pos);
if (pos == wcstring::npos) return std::make_pair(wcstring::npos, wcstring::npos);
size_type next_pos = str.find_first_of(needle, pos);
if (next_pos == wcstring::npos) {
return std::make_pair(pos, wcstring::npos);
}
str[next_pos] = L'\0';
return std::make_pair(pos, next_pos - pos);
}
|