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142 lines
4.8 KiB
C++
142 lines
4.8 KiB
C++
// { dg-require-iconv "UCS-2LE" }
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// { dg-require-iconv "ISO-8859-15" }
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// 2000-08-22 Benjamin Kosnik <bkoz@cygnus.com>
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// Copyright (C) 2000-2021 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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// 22.2.1.5 - Template class codecvt [lib.locale.codecvt]
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#include <locale>
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#include <cstring>
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#include <testsuite_hooks.h>
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#include <ext/codecvt_specializations.h>
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/*
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> how do I check that these conversions are correct?
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Very easy. Since all the characters are from ASCII you simply
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zero-extend the values.
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drepper$ echo 'black pearl jasmine tea' | od -t x1
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0000000 62 6c 61 63 6b 20 70 65 61 72 6c 20 6a 61 73 6d
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0000020 69 6e 65 20 74 65 61 0a
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So the UCS-2 string is
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0x0062, 0x006c, 0x0061, ...
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You get the idea. With iconv() you have to take care of the
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byte-order, though. UCS-2 can mean little- or big endian. Looking at
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your result
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> $9 = 25856
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it shows that the other byte-order is used (25856 == 0x6500).
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*/
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// Partial specialization using encoding_state.
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// codecvt<unicode_t, char, encoding_state>
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// UNICODE - UCS2 (little endian)
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void test02()
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{
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using namespace std;
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typedef codecvt_base::result result;
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typedef unsigned short int_type;
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typedef char ext_type;
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typedef __gnu_cxx::encoding_state state_type;
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typedef codecvt<int_type, ext_type, state_type> unicode_codecvt;
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typedef char_traits<int_type> int_traits;
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typedef char_traits<ext_type> ext_traits;
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const ext_type* e_lit = "black pearl jasmine tea";
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int size = strlen(e_lit);
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char i_lit_base[50] __attribute__((aligned(__alignof__(int_type)))) =
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{
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char(0x62), char(0x00), char(0x6c), char(0x00), char(0x61), char(0x00),
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char(0x63), char(0x00), char(0x6b), char(0x00), char(0x20), char(0x00),
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char(0x70), char(0x00), char(0x65), char(0x00), char(0x61), char(0x00),
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char(0x72), char(0x00), char(0x6c), char(0x00), char(0x20), char(0x00),
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char(0x6a), char(0x00), char(0x61), char(0x00), char(0x73), char(0x00),
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char(0x6d), char(0x00), char(0x69), char(0x00), char(0x6e), char(0x00),
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char(0x65), char(0x00), char(0x20), char(0x00), char(0x74), char(0x00),
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char(0x65), char(0x00), char(0x61), char(0x00), char(0xa0), char(0x00)
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};
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const int_type* i_lit = reinterpret_cast<int_type*>(i_lit_base);
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const ext_type* efrom_next;
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const int_type* ifrom_next;
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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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// construct a locale object with the specialized facet.
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locale loc(locale::classic(), new unicode_codecvt);
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// sanity check the constructed locale has the specialized facet.
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VERIFY( has_facet<unicode_codecvt>(loc) );
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const unicode_codecvt& cvt = use_facet<unicode_codecvt>(loc);
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// in
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unicode_codecvt::state_type state01("UCS-2LE", "ISO-8859-15", 0, 0);
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// internal encoding is bigger because of bom
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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 + 1, 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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unicode_codecvt::state_type state02("UCS-2LE", "ISO-8859-15", 0, 0);
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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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ext_traits::copy(e_arr, e_lit, size);
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unicode_codecvt::state_type state03("UCS-2LE", "ISO-8859-15", 0, 0);
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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( !ext_traits::compare(e_arr, e_lit, size) );
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VERIFY( eto_next == e_arr );
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int i = cvt.encoding();
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VERIFY( i == 2 ); // Target-dependent.
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VERIFY( !cvt.always_noconv() );
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unicode_codecvt::state_type state04("UCS-2LE", "ISO-8859-15", 0, 0);
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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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int main ()
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{
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test02();
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return 0;
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}
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