53 lines
1.8 KiB
C++
53 lines
1.8 KiB
C++
/*
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* Copyright (C) 2015 Emeric Poupon
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*
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* This file is part of LMS.
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*
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* LMS is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* LMS is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with LMS. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "SvgImage.hpp"
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#include <fstream>
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#include "core/ITraceLogger.hpp"
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#include "image/Exception.hpp"
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namespace lms::image
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{
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std::unique_ptr<IEncodedImage> readSvgFile(const std::filesystem::path& p)
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{
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LMS_SCOPED_TRACE_DETAILED("Image", "ReadSVG");
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if (p.extension() != ".svg")
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throw Exception{ "Unexpected file extension: '" + p.extension().string() + "', expected .svg" };
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std::ifstream ifs{ p.string(), std::ios::binary };
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if (!ifs.is_open())
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throw Exception{ "Cannot open file '" + p.string() + "' for reading purpose" };
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std::vector<std::byte> data;
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// read file content
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ifs.seekg(0, std::ios::end);
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std::streamsize size = ifs.tellg();
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if (size < 0)
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throw Exception{ "Cannot determine file size for '" + p.string() + "'" };
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ifs.seekg(0, std::ios::beg);
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data.resize(size);
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if (!ifs.read(reinterpret_cast<char*>(data.data()), size))
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throw Exception{ "Cannot read file content for '" + p.string() + "'" };
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return std::make_unique<SvgImage>(std::move(data));
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}
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} |