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unicode.cpp
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74 lines (64 loc) · 2.17 KB
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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2025 Artem Pavlenko
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*****************************************************************************/
// mapnik
#include <mapnik/unicode.hpp>
#include <mapnik/value/types.hpp>
// std
#include <stdexcept>
#include <mapnik/warning.hpp>
MAPNIK_DISABLE_WARNING_PUSH
#include <mapnik/warning_ignore.hpp>
#include <unicode/ucnv.h>
MAPNIK_DISABLE_WARNING_POP
namespace mapnik {
transcoder::transcoder(std::string const& encoding)
: conv_(0)
{
UErrorCode err = U_ZERO_ERROR;
conv_ = ucnv_open(encoding.c_str(), &err);
if (!U_SUCCESS(err))
{
// NOTE: conv_ should be null on error so no need to call ucnv_close
throw std::runtime_error(std::string("could not create converter for ") + encoding);
}
}
mapnik::value_unicode_string transcoder::transcode(char const* data, std::int32_t length) const
{
UErrorCode err = U_ZERO_ERROR;
mapnik::value_unicode_string ustr(data, length, conv_, err);
if (ustr.isBogus())
{
ustr.remove();
}
return ustr;
}
transcoder::~transcoder()
{
if (conv_)
ucnv_close(conv_);
}
void to_utf8(mapnik::value_unicode_string const& input, std::string& target)
{
target.clear(); // mimic previous target.assign(...) semantics
input.toUTF8String(target); // this appends to target
}
} // namespace mapnik