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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, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009

// Free Software Foundation

//

// 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;

  bool test __attribute__((unused)) = true;

  const ext_type*       e_lit = "black pearl jasmine tea";

  int                   size = strlen(e_lit);

  char  i_lit_base[50] __attribute__((aligned(__alignof__(int_type)))) =

  {

    0x62, 0x00, 0x6c, 0x00, 0x61, 0x00, 0x63, 0x00, 0x6b, 0x00, 0x20, 0x00,

    0x70, 0x00, 0x65, 0x00, 0x61, 0x00, 0x72, 0x00, 0x6c, 0x00, 0x20, 0x00,

    0x6a, 0x00, 0x61, 0x00, 0x73, 0x00, 0x6d, 0x00, 0x69, 0x00, 0x6e, 0x00,

    0x65, 0x00, 0x20, 0x00, 0x74, 0x00, 0x65, 0x00, 0x61, 0x00, 0xa0, 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;

}