// { dg-require-iconv "UCS-2LE" } // { dg-require-iconv "ISO-8859-15" } // 2000-08-22 Benjamin Kosnik // 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 // . // 22.2.1.5 - Template class codecvt [lib.locale.codecvt] #include #include #include #include /* > 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 - 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 unicode_codecvt; typedef char_traits int_traits; typedef char_traits 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(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(loc) ); const unicode_codecvt& cvt = use_facet(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; }