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// { dg-require-iconv "UCS-2LE" }
// { dg-require-iconv "ISO-8859-15" }
// 2000-08-22 Benjamin Kosnik <bkoz@cygnus.com>
// Copyright (C) 2000-2021 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/>.
// 22.2.1.5 - Template class codecvt [lib.locale.codecvt]
#include <locale>
#include <cstring>
#include <testsuite_hooks.h>
#include <ext/codecvt_specializations.h>
/*
> how do I check that these conversions are correct?
Very easy. Since all the characters are from ASCII you simply
zero-extend the values.
drepper$ echo 'black pearl jasmine tea' | od -t x1
0000000 62 6c 61 63 6b 20 70 65 61 72 6c 20 6a 61 73 6d
0000020 69 6e 65 20 74 65 61 0a
So the UCS-2 string is
0x0062, 0x006c, 0x0061, ...
You get the idea. With iconv() you have to take care of the
byte-order, though. UCS-2 can mean little- or big endian. Looking at
your result
> $9 = 25856
it shows that the other byte-order is used (25856 == 0x6500).
*/
// Partial specialization using encoding_state.
// codecvt<unicode_t, char, encoding_state>
// UNICODE - UCS2 (little endian)
void test02()
{
using namespace std;
typedef codecvt_base::result result;
typedef unsigned short int_type;
typedef char ext_type;
typedef __gnu_cxx::encoding_state state_type;
typedef codecvt<int_type, ext_type, state_type> unicode_codecvt;
typedef char_traits<int_type> int_traits;
typedef char_traits<ext_type> ext_traits;
const ext_type* e_lit = "black pearl jasmine tea";
int size = strlen(e_lit);
char i_lit_base[50] __attribute__((aligned(__alignof__(int_type)))) =
{
char(0x62), char(0x00), char(0x6c), char(0x00), char(0x61), char(0x00),
char(0x63), char(0x00), char(0x6b), char(0x00), char(0x20), char(0x00),
char(0x70), char(0x00), char(0x65), char(0x00), char(0x61), char(0x00),
char(0x72), char(0x00), char(0x6c), char(0x00), char(0x20), char(0x00),
char(0x6a), char(0x00), char(0x61), char(0x00), char(0x73), char(0x00),
char(0x6d), char(0x00), char(0x69), char(0x00), char(0x6e), char(0x00),
char(0x65), char(0x00), char(0x20), char(0x00), char(0x74), char(0x00),
char(0x65), char(0x00), char(0x61), char(0x00), char(0xa0), char(0x00)
};
const int_type* i_lit = reinterpret_cast<int_type*>(i_lit_base);
const ext_type* efrom_next;
const int_type* ifrom_next;
ext_type* e_arr = new ext_type[size + 1];
ext_type* eto_next;
int_type* i_arr = new int_type[size + 1];
int_type* ito_next;
// construct a locale object with the specialized facet.
locale loc(locale::classic(), new unicode_codecvt);
// sanity check the constructed locale has the specialized facet.
VERIFY( has_facet<unicode_codecvt>(loc) );
const unicode_codecvt& cvt = use_facet<unicode_codecvt>(loc);
// in
unicode_codecvt::state_type state01("UCS-2LE", "ISO-8859-15", 0, 0);
// internal encoding is bigger because of bom
result r1 = cvt.in(state01, e_lit, e_lit + size, efrom_next,
i_arr, i_arr + size + 1, ito_next);
VERIFY( r1 == codecvt_base::ok );
VERIFY( !int_traits::compare(i_arr, i_lit, size) );
VERIFY( efrom_next == e_lit + size );
VERIFY( ito_next == i_arr + size );
// out
unicode_codecvt::state_type state02("UCS-2LE", "ISO-8859-15", 0, 0);
result r2 = cvt.out(state02, i_lit, i_lit + size, ifrom_next,
e_arr, e_arr + size, eto_next);
VERIFY( r2 == codecvt_base::ok );
VERIFY( !ext_traits::compare(e_arr, e_lit, size) );
VERIFY( ifrom_next == i_lit + size );
VERIFY( eto_next == e_arr + size );
// unshift
ext_traits::copy(e_arr, e_lit, size);
unicode_codecvt::state_type state03("UCS-2LE", "ISO-8859-15", 0, 0);
result r3 = cvt.unshift(state03, e_arr, e_arr + size, eto_next);
VERIFY( r3 == codecvt_base::noconv );
VERIFY( !ext_traits::compare(e_arr, e_lit, size) );
VERIFY( eto_next == e_arr );
int i = cvt.encoding();
VERIFY( i == 2 ); // Target-dependent.
VERIFY( !cvt.always_noconv() );
unicode_codecvt::state_type state04("UCS-2LE", "ISO-8859-15", 0, 0);
int j = cvt.length(state03, e_lit, e_lit + size, 5);
VERIFY( j == 5 );
int k = cvt.max_length();
VERIFY( k == 1 );
delete [] e_arr;
delete [] i_arr;
}
int main ()
{
test02();
return 0;
}