Bitcoin Core  22.99.0
P2P Digital Currency
str.h
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1 // Copyright (c) 2019 The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 
5 #ifndef BITCOIN_TEST_UTIL_STR_H
6 #define BITCOIN_TEST_UTIL_STR_H
7 
8 #include <string>
9 
10 bool CaseInsensitiveEqual(const std::string& s1, const std::string& s2);
11 
16 template <typename CharType, size_t StringLength>
17 bool NextString(CharType (&string)[StringLength], CharType min_char, CharType max_char)
18 {
19  for (CharType& elem : string) {
20  bool has_next = elem != max_char;
21  elem = elem < min_char || elem >= max_char ? min_char : CharType(elem + 1);
22  if (has_next) return true;
23  }
24  return false;
25 }
26 
31 template <typename CharType, size_t StringLength, typename Fn>
32 void ForEachNoDup(CharType (&string)[StringLength], CharType min_char, CharType max_char, Fn&& fn) {
33  for (bool has_next = true; has_next; has_next = NextString(string, min_char, max_char)) {
34  int prev = -1;
35  bool skip_string = false;
36  for (CharType c : string) {
37  if (c == prev) skip_string = true;
38  if (skip_string || c < min_char || c > max_char) break;
39  prev = c;
40  }
41  if (!skip_string) fn();
42  }
43 }
44 
45 #endif // BITCOIN_TEST_UTIL_STR_H
ForEachNoDup
void ForEachNoDup(CharType(&string)[StringLength], CharType min_char, CharType max_char, Fn &&fn)
Iterate over string values and call function for each string without successive duplicate characters.
Definition: str.h:32
NextString
bool NextString(CharType(&string)[StringLength], CharType min_char, CharType max_char)
Increment a string.
Definition: str.h:17
CaseInsensitiveEqual
bool CaseInsensitiveEqual(const std::string &s1, const std::string &s2)
Definition: str.cpp:10