45 lines
1.7 KiB
C++
45 lines
1.7 KiB
C++
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//
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// Copyright (c) 2009-2011 Artyom Beilis (Tonkikh)
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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#include <boost/locale.hpp>
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#include <boost/algorithm/string/case_conv.hpp>
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#include <iostream>
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#include <ctime>
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int main()
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{
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using namespace boost::locale;
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using namespace std;
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// Create system default locale
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generator gen;
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locale loc=gen("");
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locale::global(loc);
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cout.imbue(loc);
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cout<<"Correct case conversion can't be done by simple, character by character conversion"<<endl;
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cout<<"because case conversion is context sensitive and not 1-to-1 conversion"<<endl;
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cout<<"For example:"<<endl;
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cout<<" German grüßen correctly converted to "<<to_upper("grüßen")<<", instead of incorrect "
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<<boost::to_upper_copy(std::string("grüßen"))<<endl;
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cout<<" where ß is replaced with SS"<<endl;
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cout<<" Greek ὈΔΥΣΣΕΎΣ is correctly converted to "<<to_lower("ὈΔΥΣΣΕΎΣ")<<", instead of incorrect "
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<<boost::to_lower_copy(std::string("ὈΔΥΣΣΕΎΣ"))<<endl;
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cout<<" where Σ is converted to σ or to ς, according to position in the word"<<endl;
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cout<<"Such type of conversion just can't be done using std::toupper that work on character base, also std::toupper is "<<endl;
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cout<<"not even applicable when working with variable character length like in UTF-8 or UTF-16 limiting the correct "<<endl;
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cout<<"behavior to unicode subset BMP or ASCII only"<<endl;
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}
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// vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4
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// boostinspect:noascii
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