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- //
- // Copyright (c) 2009-2011 Artyom Beilis (Tonkikh)
- //
- // Distributed under the Boost Software License, Version 1.0. (See
- // accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt)
- //
- //
- // ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
- //
- // BIG FAT WARNING FOR Microsoft Visual Studio Users
- //
- // YOU NEED TO CONVERT THIS SOURCE FILE ENCODING TO UTF-8 WITH BOM ENCODING.
- //
- // Unfortunately MSVC understands that the source code is encoded as
- // UTF-8 only if you add useless BOM in the beginning.
- //
- // So, before you compile "wide" examples with MSVC, please convert them to text
- // files with BOM. There are two very simple ways to do it:
- //
- // 1. Open file with Notepad and save it from there. It would convert
- // it to file with BOM.
- // 2. In Visual Studio go File->Advances Save Options... and select
- // Unicode (UTF-8 with signature) Codepage 65001
- //
- // Note: once converted to UTF-8 with BOM, this source code would not
- // compile with other compilers, because no-one uses BOM with UTF-8 today
- // because it is absolutely meaningless in context of UTF-8.
- //
- // ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
- //
- #include <boost/locale.hpp>
- #include <boost/algorithm/string/case_conv.hpp>
- #include <iostream>
- #include <ctime>
- int main()
- {
- using namespace boost::locale;
- using namespace std;
- // Create system default locale
- generator gen;
- locale loc=gen("");
- locale::global(loc);
- wcout.imbue(loc);
- // This is needed to prevent C library to
- // convert strings to narrow
- // instead of C++ on some platforms
- std::ios_base::sync_with_stdio(false);
-
- wcout<<L"Correct case conversion can't be done by simple, character by character conversion"<<endl;
- wcout<<L"because case conversion is context sensitive and not 1-to-1 conversion"<<endl;
- wcout<<L"For example:"<<endl;
- wcout<<L" German grüßen correctly converted to "<<to_upper(L"grüßen")<<L", instead of incorrect "
- <<boost::to_upper_copy(std::wstring(L"grüßen"))<<endl;
- wcout<<L" where ß is replaced with SS"<<endl;
- wcout<<L" Greek ὈΔΥΣΣΕΎΣ is correctly converted to "<<to_lower(L"ὈΔΥΣΣΕΎΣ")<<L", instead of incorrect "
- <<boost::to_lower_copy(std::wstring(L"ὈΔΥΣΣΕΎΣ"))<<endl;
- wcout<<L" where Σ is converted to σ or to ς, according to position in the word"<<endl;
- wcout<<L"Such type of conversion just can't be done using std::toupper that work on character base, also std::toupper is "<<endl;
- wcout<<L"not fully applicable when working with variable character length like in UTF-8 or UTF-16 limiting the correct "<<endl;
- wcout<<L"behavoir to BMP or ASCII only"<<endl;
-
- }
- // vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4
- // boostinspect:noascii
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