74 lines
3.2 KiB
C++
74 lines
3.2 KiB
C++
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//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <regex>
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// template <class traits, class charT, class ST, class SA, class FST, class FSA>>
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// basic_string<charT, ST, SA>
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// regex_replace(const basic_string<charT, ST, SA>& s,
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// const basic_regex<charT, traits>& e,
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// const basic_string<charT, FST, FSA>& fmt,
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// regex_constants::match_flag_type flags =
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// regex_constants::match_default);
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#include <regex>
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#include <cassert>
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int main()
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{
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{
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std::regex phone_numbers("\\d{3}-\\d{4}");
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std::string phone_book("555-1234, 555-2345, 555-3456");
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std::string r = std::regex_replace(phone_book, phone_numbers,
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std::string("123-$&"));
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assert(r == "123-555-1234, 123-555-2345, 123-555-3456");
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}
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{
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std::regex phone_numbers("\\d{3}-\\d{4}");
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std::string phone_book("555-1234, 555-2345, 555-3456");
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std::string r = std::regex_replace(phone_book, phone_numbers,
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std::string("123-$&"),
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std::regex_constants::format_sed);
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assert(r == "123-$555-1234, 123-$555-2345, 123-$555-3456");
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}
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{
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std::regex phone_numbers("\\d{3}-\\d{4}");
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std::string phone_book("555-1234, 555-2345, 555-3456");
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std::string r = std::regex_replace(phone_book, phone_numbers,
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std::string("123-&"),
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std::regex_constants::format_sed);
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assert(r == "123-555-1234, 123-555-2345, 123-555-3456");
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}
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{
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std::regex phone_numbers("\\d{3}-\\d{4}");
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std::string phone_book("555-1234, 555-2345, 555-3456");
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std::string r = std::regex_replace(phone_book, phone_numbers,
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std::string("123-$&"),
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std::regex_constants::format_no_copy);
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assert(r == "123-555-1234123-555-2345123-555-3456");
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}
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{
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std::regex phone_numbers("\\d{3}-\\d{4}");
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std::string phone_book("555-1234, 555-2345, 555-3456");
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std::string r = std::regex_replace(phone_book, phone_numbers,
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std::string("123-$&"),
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std::regex_constants::format_first_only);
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assert(r == "123-555-1234, 555-2345, 555-3456");
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}
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{
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std::regex phone_numbers("\\d{3}-\\d{4}");
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std::string phone_book("555-1234, 555-2345, 555-3456");
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std::string r = std::regex_replace(phone_book, phone_numbers,
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std::string("123-$&"),
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std::regex_constants::format_first_only |
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std::regex_constants::format_no_copy);
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assert(r == "123-555-1234");
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}
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}
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