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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)
//
#ifndef BOOST_LOCALE_IMPL_UCONV_CODEPAGE_HPP
#define BOOST_LOCALE_IMPL_UCONV_CODEPAGE_HPP
#include <boost/locale/encoding.hpp>
#include "conv.hpp"
#include "../icu/icu_util.hpp"
#include "../icu/uconv.hpp"
#include <unicode/ucnv.h>
#include <unicode/ucnv_err.h>
#include <vector>
#include <memory>
#include <boost/locale/hold_ptr.hpp>
namespace boost {
namespace locale {
namespace conv {
namespace impl {
template<typename CharType>
class uconv_to_utf : public converter_to_utf<CharType> {
public:
typedef CharType char_type;
typedef std::basic_string<char_type> string_type;
virtual bool open(char const *charset,method_type how)
{
close();
try {
cvt_from_.reset(new from_type(charset,how == skip ? impl_icu::cvt_skip : impl_icu::cvt_stop));
cvt_to_.reset(new to_type("UTF-8",how == skip ? impl_icu::cvt_skip : impl_icu::cvt_stop));
}
catch(std::exception const &/*e*/) {
close();
return false;
}
return true;
}
void close()
{
cvt_from_.reset();
cvt_to_.reset();
}
virtual string_type convert(char const *begin,char const *end)
{
try {
return cvt_to_->std(cvt_from_->icu_checked(begin,end));
}
catch(std::exception const &/*e*/) {
throw conversion_error();
}
}
private:
typedef impl_icu::icu_std_converter<char> from_type;
typedef impl_icu::icu_std_converter<CharType> to_type;
hold_ptr<from_type> cvt_from_;
hold_ptr<to_type> cvt_to_;
};
template<typename CharType>
class uconv_from_utf : public converter_from_utf<CharType> {
public:
typedef CharType char_type;
virtual bool open(char const *charset,method_type how)
{
close();
try {
cvt_from_.reset(new from_type("UTF-8",how == skip ? impl_icu::cvt_skip : impl_icu::cvt_stop));
cvt_to_.reset(new to_type(charset,how == skip ? impl_icu::cvt_skip : impl_icu::cvt_stop));
}
catch(std::exception const &/*e*/) {
close();
return false;
}
return true;
}
void close()
{
cvt_from_.reset();
cvt_to_.reset();
}
virtual std::string convert(CharType const *begin,CharType const *end)
{
try {
return cvt_to_->std(cvt_from_->icu_checked(begin,end));
}
catch(std::exception const &/*e*/) {
throw conversion_error();
}
}
private:
typedef impl_icu::icu_std_converter<CharType> from_type;
typedef impl_icu::icu_std_converter<char> to_type;
hold_ptr<from_type> cvt_from_;
hold_ptr<to_type> cvt_to_;
};
class uconv_between : public converter_between {
public:
virtual bool open(char const *to_charset,char const *from_charset,method_type how)
{
close();
try {
cvt_from_.reset(new from_type(from_charset,how == skip ? impl_icu::cvt_skip : impl_icu::cvt_stop));
cvt_to_.reset(new to_type(to_charset,how == skip ? impl_icu::cvt_skip : impl_icu::cvt_stop));
}
catch(std::exception const &/*e*/) {
close();
return false;
}
return true;
}
void close()
{
cvt_from_.reset();
cvt_to_.reset();
}
virtual std::string convert(char const *begin,char const *end)
{
try {
return cvt_to_->std(cvt_from_->icu(begin,end));
}
catch(std::exception const &/*e*/) {
throw conversion_error();
}
}
private:
typedef impl_icu::icu_std_converter<char> from_type;
typedef impl_icu::icu_std_converter<char> to_type;
hold_ptr<from_type> cvt_from_;
hold_ptr<to_type> cvt_to_;
};
} // impl
} // conv
} // locale
} // boost
// vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4
#endif
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