107 lines
3 KiB
C++
107 lines
3 KiB
C++
// { dg-do run { target c++11 } }
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// Copyright (C) 2015-2024 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// 22.3.3.2.2 String conversions
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#include <locale>
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#include <string>
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#include <testsuite_hooks.h>
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template<typename Elem>
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struct cvt : std::codecvt<Elem, char, std::mbstate_t> { };
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template<typename Elem>
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using str_conv = std::wstring_convert<cvt<Elem>, Elem>;
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using std::string;
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using std::u16string;
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using std::u32string;
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// test construction with state, for partial conversions
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void test01()
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{
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typedef str_conv<char> wsc;
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wsc c;
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string input = (const char*)u8"\u00a3 shillings pence";
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string woutput = c.from_bytes(input.substr(0, 1));
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auto partial_state = c.state();
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auto partial_count = c.converted();
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auto woutput2 = c.from_bytes("state reset on next conversion");
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VERIFY( woutput2 == "state reset on next conversion" );
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wsc c2(new cvt<char>, partial_state);
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woutput += c2.from_bytes(input.substr(partial_count));
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VERIFY( (const char*)u8"\u00a3 shillings pence" == woutput );
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string roundtrip = c2.to_bytes(woutput);
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VERIFY( input == roundtrip );
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}
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void test02()
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{
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typedef str_conv<char16_t> wsc;
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wsc c;
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string input = (const char*)u8"\u00a3 shillings pence";
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u16string woutput = c.from_bytes(input.substr(0, 1));
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auto partial_state = c.state();
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auto partial_count = c.converted();
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auto woutput2 = c.from_bytes("state reset on next conversion");
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VERIFY( woutput2 == u"state reset on next conversion" );
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wsc c2(new cvt<char16_t>, partial_state);
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woutput += c2.from_bytes(input.substr(partial_count));
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VERIFY( u"\u00a3 shillings pence" == woutput );
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string roundtrip = c2.to_bytes(woutput);
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VERIFY( input == roundtrip );
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}
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void test03()
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{
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typedef str_conv<char32_t> wsc;
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wsc c;
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string input = (const char*)u8"\u00a3 shillings pence";
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u32string woutput = c.from_bytes(input.substr(0, 1));
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auto partial_state = c.state();
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auto partial_count = c.converted();
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auto woutput2 = c.from_bytes("state reset on next conversion");
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VERIFY( woutput2 == U"state reset on next conversion" );
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wsc c2(new cvt<char32_t>, partial_state);
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woutput += c2.from_bytes(input.substr(partial_count));
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VERIFY( U"\u00a3 shillings pence" == woutput );
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string roundtrip = c2.to_bytes(woutput);
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VERIFY( input == roundtrip );
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}
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int main()
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{
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test01();
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test02();
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test03();
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}
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