jeanlemotan
100 lines
3.7 KiB
C++
100 lines
3.7 KiB
C++
#pragma once
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#include "fs/IPack.h"
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#include "fs/IFilesystem.h"
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#include "fs/Error.h"
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#include "fs/Mode.h"
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#include "fs/Api.h"
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#include "tl/vector.h"
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#include "tl/identifier.h"
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namespace fs
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{
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class FS_API CustomFilesystem final : public IFilesystem
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{
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public:
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CustomFilesystem() = default;
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CustomFilesystem(CustomFilesystem&&) = delete;
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CustomFilesystem& operator=(CustomFilesystem&&) = delete;
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CustomFilesystem(const CustomFilesystem&) = delete;
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CustomFilesystem& operator=(const CustomFilesystem&) = delete;
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//////////////////////////////////////////////////////////////////////////
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// New API
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TL_DECLARE_INTEGRAL_ID(PackId, uint64_t, 0)
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tl::result<PackId> mountFront(AbsPath mountPoint, tl::unique_ref<IPack> pack);
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tl::result<PackId> mountBack(AbsPath mountPoint, tl::unique_ref<IPack> pack);
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//unmounts all the packs for this point. It basically deletes the mount point
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cppcoro::generator<tl::unique_ref<IPack>> unmountAll();
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//When unmounting, the Filesystem returns the pack back to you (if found)
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tl::unique_ptr<IPack> unmount(PackId packId);
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//Returns the physical location of the virtual pack.
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ConvertToNativePathResult convertToNativePath(const AbsPath& path) const override;
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OpenSourceResult openSource(const AbsPath& path, SourceFlags flags = SourceFlags()) const override;
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OpenStreamSourceResult openStreamSource(const AbsPath& path, SourceFlags flags = SourceFlags()) const override;
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OpenMapSourceResult openMapSource(const AbsPath& path, MapView mapView = MapView(), SourceFlags flags = SourceFlags()) const override;
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OpenSinkResult openSink(const AbsPath& path, Mode mode, SinkFlags flags = SinkFlags()) override;
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OpenStreamSinkResult openStreamSink(const AbsPath& path, Mode mode, SinkFlags flags = SinkFlags()) override;
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OpenMapSinkResult openMapSink(const AbsPath& path, Mode mode, size_t size, SinkFlags flags = SinkFlags()) override;
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IsFileResult isFile(const AbsPath& path) const override;
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IsFolderResult isFolder(const AbsPath& path) const override;
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ExistsResult exists(const AbsPath& path) const override;
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MakeFolderResult makeFolder(const AbsPath& path) override;
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RenameResult rename(const AbsPath& path, const AbsPath& newPath) override;
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RemoveResult remove(const AbsPath& path) override;
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RemoveRecursivelyResult removeRecursively(const AbsPath& path) override;
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CopyResult copy(const AbsPath& path, const AbsPath& newPath) override;
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MakeHardLinkResult makeHardLink(const AbsPath& sourcePath, const AbsPath& linkPath) override;
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MakeSoftLinkResult makeSymLink(const AbsPath& sourcePath, const AbsPath& linkPath) override;
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SetWriteTimeResult setWriteTime(const AbsPath& path, time_t time) override;
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GetStatResult getStat(const AbsPath& path) const override;
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cppcoro::generator<EnumerateEntry> enumerate(const AbsPath& path) const override;
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cppcoro::generator<EnumerateEntry> enumerateRecursively(const AbsPath& path) const override;
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private:
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struct PackData
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{
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PackId id;
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tl::unique_ref<IPack> pack;
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AbsPath mountPoint;
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explicit PackData(tl::unique_ref<IPack>&& pack) noexcept
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: pack(std::move(pack))
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{}
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PackData(PackData&& other) noexcept = default;
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PackData& operator=(PackData&& other) noexcept = default;
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PackData(const PackData& other) noexcept = delete;
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PackData& operator=(const PackData& other) noexcept = delete;
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};
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tl::vector<PackData> m_packsData;
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void convertToPackPath(AbsPath& packPath, const AbsPath& path, const AbsPath& mountPoint) const;
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enum class MountPolicy
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{
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Front, //the pack will be mounted over packs from the same mount point. This pack will take precedence
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Back //the pack will be at the bottom of existing packs from the same mount point. Its streams will be searched last
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};
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tl::result<PackId> mount(AbsPath mountPoint, tl::unique_ref<IPack> pack, MountPolicy policy);
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};
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}
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