1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <regex> 11 12 // template <class traits, class charT, class ST, class SA> 13 // basic_string<charT, ST, SA> 14 // regex_replace(const basic_string<charT, ST, SA>& s, 15 // const basic_regex<charT, traits>& e, const charT* fmt, 16 // regex_constants::match_flag_type flags = 17 // regex_constants::match_default); 18 19 #include <regex> 20 #include <cassert> 21 22 int main() 23 { 24 { 25 std::regex phone_numbers("\\d{3}-\\d{4}"); 26 std::string phone_book("555-1234, 555-2345, 555-3456"); 27 std::string r = std::regex_replace(phone_book, phone_numbers, 28 "123-$&"); 29 assert(r == "123-555-1234, 123-555-2345, 123-555-3456"); 30 } 31 { 32 std::regex phone_numbers("\\d{3}-\\d{4}"); 33 std::string phone_book("555-1234, 555-2345, 555-3456"); 34 std::string r = std::regex_replace(phone_book, phone_numbers, 35 "123-$&", 36 std::regex_constants::format_sed); 37 assert(r == "123-$555-1234, 123-$555-2345, 123-$555-3456"); 38 } 39 { 40 std::regex phone_numbers("\\d{3}-\\d{4}"); 41 std::string phone_book("555-1234, 555-2345, 555-3456"); 42 std::string r = std::regex_replace(phone_book, phone_numbers, 43 "123-&", 44 std::regex_constants::format_sed); 45 assert(r == "123-555-1234, 123-555-2345, 123-555-3456"); 46 } 47 { 48 std::regex phone_numbers("\\d{3}-\\d{4}"); 49 std::string phone_book("555-1234, 555-2345, 555-3456"); 50 std::string r = std::regex_replace(phone_book, phone_numbers, 51 "123-$&", 52 std::regex_constants::format_no_copy); 53 assert(r == "123-555-1234123-555-2345123-555-3456"); 54 } 55 { 56 std::regex phone_numbers("\\d{3}-\\d{4}"); 57 std::string phone_book("555-1234, 555-2345, 555-3456"); 58 std::string r = std::regex_replace(phone_book, phone_numbers, 59 "123-$&", 60 std::regex_constants::format_first_only); 61 assert(r == "123-555-1234, 555-2345, 555-3456"); 62 } 63 { 64 std::regex phone_numbers("\\d{3}-\\d{4}"); 65 std::string phone_book("555-1234, 555-2345, 555-3456"); 66 std::string r = std::regex_replace(phone_book, phone_numbers, 67 "123-$&", 68 std::regex_constants::format_first_only | 69 std::regex_constants::format_no_copy); 70 assert(r == "123-555-1234"); 71 } 72 } 73
