int main()
{
{
std::regex phone_numbers("\\d{3}-\\d{4}");
const char phone_book[] = "555-1234, 555-2345, 555-3456";
typedef output_iterator<char*> Out;
typedef bidirectional_iterator<const char*> Bi;
char buf[100] = {0};
Out r = std::regex_replace(Out(buf), Bi(std::begin(phone_book)),
Bi(std::end(phone_book)-1), phone_numbers,
"123-$&");
assert(r.base() == buf+40);
assert(buf == std::string("123-555-1234, 123-555-2345, 123-555-3456"));
}
{
std::regex phone_numbers("\\d{3}-\\d{4}");
const char phone_book[] = "555-1234, 555-2345, 555-3456";
typedef output_iterator<char*> Out;
typedef bidirectional_iterator<const char*> Bi;
char buf[100] = {0};
Out r = std::regex_replace(Out(buf), Bi(std::begin(phone_book)),
Bi(std::end(phone_book)-1), phone_numbers,
"123-$&",
std::regex_constants::format_sed);
assert(r.base() == buf+43);
assert(buf == std::string("123-$555-1234, 123-$555-2345, 123-$555-3456"));
}
{
std::regex phone_numbers("\\d{3}-\\d{4}");
const char phone_book[] = "555-1234, 555-2345, 555-3456";
typedef output_iterator<char*> Out;
typedef bidirectional_iterator<const char*> Bi;
char buf[100] = {0};
Out r = std::regex_replace(Out(buf), Bi(std::begin(phone_book)),
Bi(std::end(phone_book)-1), phone_numbers,
"123-&",
std::regex_constants::format_sed);
assert(r.base() == buf+40);
assert(buf == std::string("123-555-1234, 123-555-2345, 123-555-3456"));
}
{
std::regex phone_numbers("\\d{3}-\\d{4}");
const char phone_book[] = "555-1234, 555-2345, 555-3456";
typedef output_iterator<char*> Out;
typedef bidirectional_iterator<const char*> Bi;
char buf[100] = {0};
Out r = std::regex_replace(Out(buf), Bi(std::begin(phone_book)),
Bi(std::end(phone_book)-1), phone_numbers,
"123-$&",
std::regex_constants::format_no_copy);
assert(r.base() == buf+36);
assert(buf == std::string("123-555-1234123-555-2345123-555-3456"));
}
{
std::regex phone_numbers("\\d{3}-\\d{4}");
const char phone_book[] = "555-1234, 555-2345, 555-3456";
typedef output_iterator<char*> Out;
typedef bidirectional_iterator<const char*> Bi;
char buf[100] = {0};
Out r = std::regex_replace(Out(buf), Bi(std::begin(phone_book)),
Bi(std::end(phone_book)-1), phone_numbers,
"123-$&",
std::regex_constants::format_first_only);
assert(r.base() == buf+32);
assert(buf == std::string("123-555-1234, 555-2345, 555-3456"));
}
{
std::regex phone_numbers("\\d{3}-\\d{4}");
const char phone_book[] = "555-1234, 555-2345, 555-3456";
typedef output_iterator<char*> Out;
typedef bidirectional_iterator<const char*> Bi;
char buf[100] = {0};
Out r = std::regex_replace(Out(buf), Bi(std::begin(phone_book)),
Bi(std::end(phone_book)-1), phone_numbers,
"123-$&",
std::regex_constants::format_first_only |
std::regex_constants::format_no_copy);
assert(r.base() == buf+12);
assert(buf == std::string("123-555-1234"));
}
}
