mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
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47 lines
2.3 KiB
C++
47 lines
2.3 KiB
C++
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/********************************************************************************
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* *
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* This file is part of IfcOpenShell. *
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* *
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* IfcOpenShell is free software: you can redistribute it and/or modify *
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* it under the terms of the Lesser GNU General Public License as published by *
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* the Free Software Foundation, either version 3.0 of the License, or *
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* (at your option) any later version. *
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* *
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* IfcOpenShell 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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* Lesser GNU General Public License for more details. *
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* *
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* You should have received a copy of the Lesser GNU General Public License *
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* along with this program. If not, see <http://www.gnu.org/licenses/>. *
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* *
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********************************************************************************/
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#include "SidecarCompress.h"
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#include <zstd.h>
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namespace SidecarCompress {
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bool decompress(const std::uint8_t* src, std::size_t src_size,
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std::uint8_t* dst, std::size_t raw_size) {
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if (raw_size == 0) return src_size == 0; // empty in ↔ empty out
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if (!src || !dst || src_size == 0) return false;
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const size_t got = ZSTD_decompress(dst, raw_size, src, src_size);
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return !ZSTD_isError(got) && got == raw_size;
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}
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#if !defined(__EMSCRIPTEN__)
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std::vector<std::uint8_t> compress(const std::uint8_t* src, std::size_t n,
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int level) {
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if (n == 0) return {};
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std::vector<std::uint8_t> out(ZSTD_compressBound(n));
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const size_t got = ZSTD_compress(out.data(), out.size(), src, n, level);
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if (ZSTD_isError(got)) return {};
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out.resize(got);
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return out;
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}
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#endif
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} // namespace SidecarCompress
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