127 lines
3.6 KiB
C++
127 lines
3.6 KiB
C++
// 2000-08-18 Benjamin Kosnik <bkoz@cygnus.com>
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// Copyright (C) 2000 Free Software Foundation
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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 2, 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 COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// 22.2.1.5 - Template class codecvt [lib.locale.codecvt]
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#include <cwchar> // for mbstate_t
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#include <locale>
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#include <debug_assert.h>
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// Need to explicitly set the state(mbstate_t) to zero.
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// How to do this is not specified by the ISO C99 standard, so we
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// might need to add some operators to make the intuiative case
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// work:
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// w_codecvt::state_type state00;
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// state00 = 0;
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// or, can use this explicit "C" initialization:
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// w_codecvt::state_type state01 = {0, 0};
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// .. except Ulrich says: Use memset. Always use memset. Feel the force...
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#ifdef _GLIBCPP_USE_WCHAR_T
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void
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zero_state(std::mbstate_t& state)
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{ std::memset(&state, 0, sizeof(std::mbstate_t)); }
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// Required instantiation
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// codecvt<wchar_t, char, mbstate_t>
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void test01()
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{
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using namespace std;
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typedef codecvt<wchar_t, char, mbstate_t> w_codecvt;
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typedef codecvt_base::result result;
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typedef wchar_t int_type;
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typedef char ext_type;
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typedef char_traits<wchar_t> int_traits;
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typedef char_traits<char> ext_traits;
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bool test = true;
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const ext_type* e_lit = "black pearl jasmine tea";
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const ext_type* efrom_next;
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const int_type* i_lit = L"black pearl jasmine tea";
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const int_type* ifrom_next;
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int size = strlen(e_lit);
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ext_type* e_arr = new ext_type[size + 1];
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ext_type* eto_next;
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int_type* i_arr = new int_type[size + 1];
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int_type* ito_next;
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locale loc;
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const w_codecvt* cvt = &use_facet<w_codecvt>(loc);
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// in
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w_codecvt::state_type state01;
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zero_state(state01);
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result r1 = cvt->in(state01, e_lit, e_lit + size, efrom_next,
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i_arr, i_arr + size, ito_next);
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VERIFY( r1 == codecvt_base::ok );
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VERIFY( !int_traits::compare(i_arr, i_lit, size) );
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VERIFY( efrom_next == e_lit + size );
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VERIFY( ito_next == i_arr + size );
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// out
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w_codecvt::state_type state02;
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zero_state(state02);
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result r2 = cvt->out(state02, i_lit, i_lit + size, ifrom_next,
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e_arr, e_arr + size, eto_next);
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VERIFY( r2 == codecvt_base::ok );
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VERIFY( !ext_traits::compare(e_arr, e_lit, size) );
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VERIFY( ifrom_next == i_lit + size );
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VERIFY( eto_next == e_arr + size );
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// unshift
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strcpy(e_arr, e_lit);
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w_codecvt::state_type state03;
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zero_state(state03);
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result r3 = cvt->unshift(state03, e_arr, e_arr + size, eto_next);
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VERIFY( r3 == codecvt_base::noconv );
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VERIFY( !strcmp(e_arr, e_lit) );
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VERIFY( eto_next == e_arr );
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int i = cvt->encoding();
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VERIFY( i == 0 );
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VERIFY( !cvt->always_noconv() );
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w_codecvt::state_type state04;
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zero_state(state04);
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int j = cvt->length(state03, e_lit, e_lit + size, 5);
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VERIFY( j == 5 );
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int k = cvt->max_length();
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VERIFY( k == 1 );
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delete [] e_arr;
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delete [] i_arr;
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}
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#endif /* !defined(_GLIBCPP_USE_WCHAR_T) */
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int main ()
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{
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#if _GLIBCPP_USE_WCHAR_T
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test01();
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#endif
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return 0;
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}
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