113 lines
2.8 KiB
C++
113 lines
2.8 KiB
C++
/*
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* Copyright 2015 - 2024 gary@drinkingtea.net
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*
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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 https://mozilla.org/MPL/2.0/.
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*/
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#pragma once
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#if __has_include(<filesystem>) && defined(OX_USE_STDLIB)
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#include <filesystem>
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#include <ox/std/bit.hpp>
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#include "filesystem.hpp"
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#define OX_HAS_PASSTHROUGHFS
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namespace ox {
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constexpr auto HasPassThroughFS = true;
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/**
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*
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*/
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class PassThroughFS: public FileSystem {
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private:
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std::filesystem::path m_path;
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public:
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explicit PassThroughFS(CRStringView dirPath);
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~PassThroughFS() noexcept override;
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[[nodiscard]]
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String basePath() const noexcept;
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Error mkdir(CRStringView path, bool recursive) noexcept override;
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Error move(CRStringView src, CRStringView dest) noexcept override;
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Result<Vector<String>> ls(CRStringView dir) const noexcept override;
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template<typename F>
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Error ls(CRStringView dir, F cb) const noexcept;
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Error remove(CRStringView path, bool recursive) noexcept override;
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Error resize(uint64_t size, void *buffer) noexcept override;
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Result<FileStat> statInode(uint64_t inode) const noexcept override;
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Result<FileStat> statPath(CRStringView path) const noexcept override;
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[[nodiscard]]
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uint64_t spaceNeeded(uint64_t size) const noexcept override;
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Result<uint64_t> available() const noexcept override;
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Result<uint64_t> size() const noexcept override;
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[[nodiscard]]
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char *buff() noexcept override;
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Error walk(Error(*cb)(uint8_t, uint64_t, uint64_t)) noexcept override;
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[[nodiscard]]
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bool valid() const noexcept override;
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protected:
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Error readFilePath(CRStringView path, void *buffer, std::size_t buffSize) noexcept override;
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Error readFileInode(uint64_t inode, void *buffer, std::size_t size) noexcept override;
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Error readFileInodeRange(uint64_t inode, std::size_t readStart, std::size_t readSize, void *buffer, std::size_t *size) noexcept override;
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Error writeFilePath(CRStringView path, const void *buffer, uint64_t size, FileType fileType) noexcept override;
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Error writeFileInode(uint64_t inode, const void *buffer, uint64_t size, FileType fileType) noexcept override;
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private:
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/**
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* Strips the leading slashes from a string.
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*/
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[[nodiscard]]
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static std::string_view stripSlash(StringView path) noexcept;
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};
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template<typename F>
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Error PassThroughFS::ls(CRStringView dir, F cb) const noexcept {
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std::error_code ec;
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const auto di = std::filesystem::directory_iterator(m_path / stripSlash(dir), ec);
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oxReturnError(OxError(static_cast<ox::ErrorCode>(ec.value()), "PassThroughFS: ls failed"));
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for (auto &p : di) {
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oxReturnError(cb(p.path().filename().c_str(), 0));
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}
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return OxError(0);
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}
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}
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#else
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namespace ox {
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constexpr auto HasPassThroughFS = false;
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}
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#endif
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