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117 lines
3.9 KiB
C++
117 lines
3.9 KiB
C++
/* vim:set ts=2 sw=2 sts=2 et: */
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/**
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* \author Marcus Holland-Moritz (github@mhxnet.de)
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* \copyright Copyright (c) Marcus Holland-Moritz
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*
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* This file is part of dwarfs.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the “Software”), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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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 AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* SPDX-License-Identifier: MIT
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*/
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#pragma once
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#include <memory>
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#include <optional>
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#include <span>
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#include <string>
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#include <dwarfs/fstypes.h>
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namespace dwarfs {
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class mmif;
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namespace internal {
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class fs_section {
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public:
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fs_section(mmif const& mm, size_t offset, int version);
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fs_section(std::shared_ptr<mmif const> mm, section_type type, size_t offset,
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size_t size, int version);
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size_t start() const { return impl_->start(); }
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size_t length() const { return impl_->length(); }
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bool is_known_compression() const { return impl_->is_known_compression(); }
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bool is_known_type() const { return impl_->is_known_type(); }
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compression_type compression() const { return impl_->compression(); }
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section_type type() const { return impl_->type(); }
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std::string name() const { return impl_->name(); }
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std::string description() const { return impl_->description(); }
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bool check_fast(mmif const& mm) const { return impl_->check_fast(mm); }
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std::span<uint8_t const> data(mmif const& mm) const {
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return impl_->data(mm);
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}
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std::optional<std::span<uint8_t const>> checksum_span(mmif const& mm) const {
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return impl_->checksum_span(mm);
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}
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std::optional<std::span<uint8_t const>> integrity_span(mmif const& mm) const {
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return impl_->integrity_span(mm);
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}
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size_t end() const { return start() + length(); }
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std::optional<uint32_t> section_number() const {
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return impl_->section_number();
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}
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std::optional<uint64_t> xxh3_64_value() const {
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return impl_->xxh3_64_value();
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}
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std::optional<std::span<uint8_t const>> sha2_512_256_value() const {
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return impl_->sha2_512_256_value();
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}
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class impl {
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public:
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virtual ~impl() = default;
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virtual size_t start() const = 0;
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virtual size_t length() const = 0;
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virtual bool is_known_compression() const = 0;
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virtual bool is_known_type() const = 0;
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virtual compression_type compression() const = 0;
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virtual section_type type() const = 0;
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virtual std::string name() const = 0;
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virtual std::string description() const = 0;
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virtual bool check_fast(mmif const& mm) const = 0;
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virtual std::span<uint8_t const> data(mmif const& mm) const = 0;
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virtual std::optional<std::span<uint8_t const>>
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checksum_span(mmif const& mm) const = 0;
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virtual std::optional<std::span<uint8_t const>>
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integrity_span(mmif const& mm) const = 0;
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virtual std::optional<uint32_t> section_number() const = 0;
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virtual std::optional<uint64_t> xxh3_64_value() const = 0;
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virtual std::optional<std::span<uint8_t const>>
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sha2_512_256_value() const = 0;
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};
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private:
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std::shared_ptr<impl const> impl_;
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};
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} // namespace internal
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} // namespace dwarfs
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