libcxx/test/std/re/re.alg/re.alg.replace/test6.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // <regex>
  10
  11 // template <class traits, class charT>
  12 //     basic_string<charT>
  13 //     regex_replace(const charT* s,
  14 //                   const basic_regex<charT, traits>& e,
  15 //                   const charT* fmt,
  16 //                   regex_constants::match_flag_type flags =
  17 //                                              regex_constants::match_default);
  18
  19 #include <regex>
  20 #include <cassert>
  21 #include "test_macros.h"
  22
  23 int main(int, char**)
  24 {
  25     {
  26         std::regex phone_numbers("\\d{3}-\\d{4}");
  27         const char phone_book[] = "555-1234, 555-2345, 555-3456";
  28         std::string r = std::regex_replace(phone_book, phone_numbers,
  29                                            "123-$&");
  30         assert(r == "123-555-1234, 123-555-2345, 123-555-3456");
  31     }
  32     {
  33         std::regex phone_numbers("\\d{3}-\\d{4}");
  34         const char phone_book[] = "555-1234, 555-2345, 555-3456";
  35         std::string r = std::regex_replace(phone_book, phone_numbers,
  36                                            "123-$&",
  37                                            std::regex_constants::format_sed);
  38         assert(r == "123-$555-1234, 123-$555-2345, 123-$555-3456");
  39     }
  40     {
  41         std::regex phone_numbers("\\d{3}-\\d{4}");
  42         const char phone_book[] = "555-1234, 555-2345, 555-3456";
  43         std::string r = std::regex_replace(phone_book, phone_numbers,
  44                                            "123-&",
  45                                            std::regex_constants::format_sed);
  46         assert(r == "123-555-1234, 123-555-2345, 123-555-3456");
  47     }
  48     {
  49         std::regex phone_numbers("\\d{3}-\\d{4}");
  50         const char phone_book[] = "555-1234, 555-2345, 555-3456";
  51         std::string r = std::regex_replace(phone_book, phone_numbers,
  52                                            "123-$&",
  53                                            std::regex_constants::format_no_copy);
  54         assert(r == "123-555-1234123-555-2345123-555-3456");
  55     }
  56     {
  57         std::regex phone_numbers("\\d{3}-\\d{4}");
  58         const char phone_book[] = "555-1234, 555-2345, 555-3456";
  59         std::string r = std::regex_replace(phone_book, phone_numbers,
  60                                            "123-$&",
  61                                            std::regex_constants::format_first_only);
  62         assert(r == "123-555-1234, 555-2345, 555-3456");
  63     }
  64     {
  65         std::regex phone_numbers("\\d{3}-\\d{4}");
  66         const char phone_book[] = "555-1234, 555-2345, 555-3456";
  67         std::string r = std::regex_replace(phone_book, phone_numbers,
  68                                            "123-$&",
  69                                            std::regex_constants::format_first_only |
  70                                            std::regex_constants::format_no_copy);
  71         assert(r == "123-555-1234");
  72     }
  73
  74   return 0;
  75 }