73ef4ff3
 Hu Chunming
提交三方库
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//
// Copyright (c) 2009-2011 Artyom Beilis (Tonkikh)
//
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/locale.hpp>
#include <boost/algorithm/string/case_conv.hpp>
#include <iostream>
#include <ctime>
int main()
{
using namespace boost::locale;
// Create system default locale
generator gen;
std::locale loc = gen("");
std::locale::global(loc);
std::cout.imbue(loc);
std::cout << "Correct case conversion can't be done by simple, character by character conversion\n";
std::cout << "because case conversion is context sensitive and not 1-to-1 conversion\n";
std::cout << "For example:\n";
std::cout << " German grüßen correctly converted to " << to_upper("grüßen") << ", instead of incorrect "
<< boost::to_upper_copy(std::string("grüßen")) << std::endl;
std::cout << " where ß is replaced with SS\n";
std::cout << " Greek ὈΔΥΣΣΕΎΣ is correctly converted to " << to_lower("ὈΔΥΣΣΕΎΣ") << ", instead of incorrect "
<< boost::to_lower_copy(std::string("ὈΔΥΣΣΕΎΣ")) << std::endl;
std::cout << " where Σ is converted to σ or to ς, according to position in the word\n";
std::cout << "Such type of conversion just can't be done using std::toupper that work on character base, also "
"std::toupper is\n";
std::cout << "not even applicable when working with variable character length like in UTF-8 or UTF-16 limiting the "
"correct\n";
std::cout << "behavior to unicode subset BMP or ASCII only\n";
}
// boostinspect:noascii
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