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  1. /// $ g++ -std=c++11 *.cc && ./a.out
  2.  
  3. #include <locale>
  4. #include <regex>
  5.  
  6. namespace {
  7.   // From http://stackoverflow.com/questions/11254232/do-c11-regular-expressions-work-with-utf-8-strings
  8.  
  9.   bool test_unicode()
  10.   {
  11.     std::locale old;
  12.     std::locale::global(std::locale("en_US.UTF-8"));
  13.  
  14.     std::regex pattern("[[:alpha:]]+", std::regex_constants::extended);
  15.     bool result = std::regex_match(std::string("abcdéfg"), pattern);
  16.  
  17.     std::locale::global(old);
  18.  
  19.     return result;
  20.   }
  21.  
  22.   bool test_unicode2()
  23.   {
  24.     std::locale old;
  25.     std::locale::global(std::locale("en_US.UTF-8"));
  26.  
  27.     std::regex pattern("[[:alpha:]]+", std::regex_constants::extended);
  28.     bool result = std::regex_match(std::string("abcd\xC3\xA9""fg"), pattern);
  29.  
  30.     std::locale::global(old);
  31.  
  32.     return result;
  33.   }
  34. }
  35.  
  36.  
  37. int main()
  38. {
  39.   return !(test_unicode() or test_unicode2()); // return 0 if *any* of
  40.                                                // the tests succeed
  41. }
  42.  
Runtime error #stdin #stdout 0s 17008KB
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https://ideone.com/5tJBDv
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
secret

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