mirror of
https://github.com/mapnik/mapnik.git
synced 2025-12-08 20:13:09 +00:00
101 lines
2.8 KiB
C++
101 lines
2.8 KiB
C++
/*****************************************************************************
|
|
*
|
|
* This file is part of Mapnik (c++ mapping toolkit)
|
|
*
|
|
* Copyright (C) 2015 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/text/font_feature_settings.hpp>
|
|
#include <mapnik/config_error.hpp>
|
|
|
|
#pragma GCC diagnostic push
|
|
#include <mapnik/warning_ignore.hpp>
|
|
#include <boost/spirit/home/x3.hpp>
|
|
#include <boost/version.hpp>
|
|
#pragma GCC diagnostic pop
|
|
|
|
// stl
|
|
#include <algorithm>
|
|
#include <cctype>
|
|
#include <sstream>
|
|
#include <functional>
|
|
|
|
namespace mapnik
|
|
{
|
|
|
|
font_feature_settings::font_feature_settings(std::string const& features)
|
|
: features_()
|
|
{
|
|
from_string(features);
|
|
}
|
|
|
|
font_feature_settings::font_feature_settings()
|
|
: features_() {}
|
|
|
|
void font_feature_settings::from_string(std::string const& features)
|
|
{
|
|
features_.clear();
|
|
if (std::all_of(features.begin(), features.end(), isspace)) return;
|
|
|
|
namespace x3 = boost::spirit::x3;
|
|
auto appender = [&](auto const& ctx)
|
|
{
|
|
this->append(_attr(ctx));
|
|
};
|
|
if (!x3::parse(features.begin(), features.end(), (+(x3::char_ - ','))[appender] % ','))
|
|
{
|
|
throw config_error("failed to parse font-feature-settings: '" + features + "'");
|
|
}
|
|
}
|
|
|
|
std::string font_feature_settings::to_string() const
|
|
{
|
|
std::ostringstream output;
|
|
constexpr size_t buffsize = 128;
|
|
char buff[buffsize];
|
|
bool first = true;
|
|
|
|
for (auto feature : features_)
|
|
{
|
|
if (!first)
|
|
{
|
|
output << ", ";
|
|
first = false;
|
|
}
|
|
hb_feature_to_string(&feature, buff, buffsize);
|
|
output << buff;
|
|
}
|
|
|
|
return output.str();
|
|
}
|
|
|
|
void font_feature_settings::append(std::string const& feature)
|
|
{
|
|
features_.emplace_back();
|
|
feature_iterator current_feature = features_.end() - 1;
|
|
|
|
if (!hb_feature_from_string(feature.c_str(), feature.length(), &*current_feature))
|
|
{
|
|
features_.erase(current_feature);
|
|
throw config_error("failed to parse font-feature-settings: '" + feature + "'");
|
|
}
|
|
}
|
|
|
|
}
|