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- // { dg-do run { target c++11 } }
- // Copyright (C) 2015-2022 Free Software Foundation, Inc.
- //
- // This file is part of the GNU ISO C++ Library. This library is free
- // software; you can redistribute it and/or modify it under the
- // terms of the GNU General Public License as published by the
- // Free Software Foundation; either version 3, or (at your option)
- // any later version.
- // This library is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- // GNU General Public License for more details.
- // You should have received a copy of the GNU General Public License along
- // with this library; see the file COPYING3. If not see
- // <http://www.gnu.org/licenses/>.
- // 22.3.3.2.2 String conversions
- #include <locale>
- #include <string>
- #include <testsuite_hooks.h>
- template<typename Elem>
- struct cvt : std::codecvt<Elem, char, std::mbstate_t> { };
- template<typename Elem>
- using str_conv = std::wstring_convert<cvt<Elem>, Elem>;
- using std::string;
- using std::u16string;
- using std::u32string;
- // test construction with state, for partial conversions
- void test01()
- {
- typedef str_conv<char> wsc;
- wsc c;
- string input = (const char*)u8"\u00a3 shillings pence";
- string woutput = c.from_bytes(input.substr(0, 1));
- auto partial_state = c.state();
- auto partial_count = c.converted();
- auto woutput2 = c.from_bytes("state reset on next conversion");
- VERIFY( woutput2 == "state reset on next conversion" );
- wsc c2(new cvt<char>, partial_state);
- woutput += c2.from_bytes(input.substr(partial_count));
- VERIFY( (const char*)u8"\u00a3 shillings pence" == woutput );
- string roundtrip = c2.to_bytes(woutput);
- VERIFY( input == roundtrip );
- }
- void test02()
- {
- typedef str_conv<char16_t> wsc;
- wsc c;
- string input = (const char*)u8"\u00a3 shillings pence";
- u16string woutput = c.from_bytes(input.substr(0, 1));
- auto partial_state = c.state();
- auto partial_count = c.converted();
- auto woutput2 = c.from_bytes("state reset on next conversion");
- VERIFY( woutput2 == u"state reset on next conversion" );
- wsc c2(new cvt<char16_t>, partial_state);
- woutput += c2.from_bytes(input.substr(partial_count));
- VERIFY( u"\u00a3 shillings pence" == woutput );
- string roundtrip = c2.to_bytes(woutput);
- VERIFY( input == roundtrip );
- }
- void test03()
- {
- typedef str_conv<char32_t> wsc;
- wsc c;
- string input = (const char*)u8"\u00a3 shillings pence";
- u32string woutput = c.from_bytes(input.substr(0, 1));
- auto partial_state = c.state();
- auto partial_count = c.converted();
- auto woutput2 = c.from_bytes("state reset on next conversion");
- VERIFY( woutput2 == U"state reset on next conversion" );
- wsc c2(new cvt<char32_t>, partial_state);
- woutput += c2.from_bytes(input.substr(partial_count));
- VERIFY( U"\u00a3 shillings pence" == woutput );
- string roundtrip = c2.to_bytes(woutput);
- VERIFY( input == roundtrip );
- }
- int main()
- {
- test01();
- test02();
- test03();
- }
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