71 lines
2.5 KiB
C++
71 lines
2.5 KiB
C++
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#ifndef OSMIUM_INDEX_DETAIL_CREATE_MAP_WITH_FD_HPP
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#define OSMIUM_INDEX_DETAIL_CREATE_MAP_WITH_FD_HPP
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/*
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This file is part of Osmium (http://osmcode.org/libosmium).
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Copyright 2013-2017 Jochen Topf <jochen@topf.org> and others (see README).
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Boost Software License - Version 1.0 - August 17th, 2003
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Permission is hereby granted, free of charge, to any person or organization
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obtaining a copy of the software and accompanying documentation covered by
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this license (the "Software") to use, reproduce, display, distribute,
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execute, and transmit the Software, and to prepare derivative works of the
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Software, and to permit third-parties to whom the Software is furnished to
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do so, all subject to the following:
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The copyright notices in the Software and this entire statement, including
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the above license grant, this restriction and the following disclaimer,
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must be included in all copies of the Software, in whole or in part, and
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all derivative works of the Software, unless such copies or derivative
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works are solely in the form of machine-executable object code generated by
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a source language processor.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*/
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#include <cassert>
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#include <cerrno>
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#include <cstring>
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#include <fcntl.h>
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#include <stdexcept>
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#include <string>
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#include <vector>
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namespace osmium {
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namespace index {
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namespace detail {
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template <typename T>
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inline T* create_map_with_fd(const std::vector<std::string>& config) {
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if (config.size() == 1) {
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return new T{};
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}
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assert(config.size() > 1);
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const std::string& filename = config[1];
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const int fd = ::open(filename.c_str(), O_CREAT | O_RDWR, 0644);
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if (fd == -1) {
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throw std::runtime_error{std::string{"can't open file '"} + filename + "': " + std::strerror(errno)};
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}
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return new T{fd};
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}
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} // namespace detail
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} // namespace index
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} // namespace osmium
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#endif // OSMIUM_INDEX_DETAIL_CREATE_MAP_WITH_FD_HPP
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