75 lines
1.9 KiB
C++
75 lines
1.9 KiB
C++
/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* Copyright 2023, Danny Robson <danny@nerdcruft.net>
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*/
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#include "./tmp.hpp"
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#include "../paths.hpp"
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#include "../posix/except.hpp"
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#include <io.h>
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#include <direct.h>
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///////////////////////////////////////////////////////////////////////////////
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static std::filesystem::path
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_temp_path_at (std::filesystem::path const &root)
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{
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// The pattern suffix we'll append to the temp directory.
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//
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// * We might as well append the package name for clarity
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// * The libc call REQUIRES the string end with "XXXXXX"
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char const SUFFIX[] = "/" PACKAGE_NAME "-XXXXXX";
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std::string path;
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path.reserve (root.string ().size () + sizeof (SUFFIX));
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path = root.string ();
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path += SUFFIX;
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if (auto const err = _mktemp_s (path.data (), path.size ()); err)
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throw cruft::posix::error (err);
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return path;
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}
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///////////////////////////////////////////////////////////////////////////////
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std::filesystem::path
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cruft::fs::mktempfile (std::filesystem::path const &dir)
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{
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auto pattern = (dir / PACKAGE_NAME "-XXXXXX").string ();
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auto const fd = mkstemp (pattern.data ());
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if (fd < 0)
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cruft::posix::error::throw_code ();
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cruft::posix::error::try_call(::close, fd);
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return pattern;
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}
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///////////////////////////////////////////////////////////////////////////////
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std::filesystem::path
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cruft::fs::mktmpdir (void)
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{
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static constexpr int RETRIES = 10;
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auto const root = cruft::paths::temp ();
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for (int i = 0; i < RETRIES; ++i) {
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auto const path = _temp_path_at (root);
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if (_mkdir (path.string ().c_str ()))
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continue;
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return path;
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}
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throw std::runtime_error ("Unable to create tmpdir");
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}
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