First

2024-07-02 18:12:23 +02:00
commit b344afa9fe
89 changed files with 10568 additions and 0 deletions
@@ -0,0 +1,99 @@
+#pragma once
+
+#include "fs/IPack.h"
+#include "fs/IFilesystem.h"
+#include "fs/Error.h"
+#include "fs/Mode.h"
+#include "fs/Api.h"
+#include "tl/vector.h"
+#include "tl/identifier.h"
+
+namespace fs
+{
+
+class FS_API CustomFilesystem final : public IFilesystem
+{
+public:
+	CustomFilesystem() = default;
+	CustomFilesystem(CustomFilesystem&&) = delete;
+	CustomFilesystem& operator=(CustomFilesystem&&) = delete;
+	CustomFilesystem(const CustomFilesystem&) = delete;
+	CustomFilesystem& operator=(const CustomFilesystem&) = delete;
+
+	//////////////////////////////////////////////////////////////////////////
+	// New API
+
+	TL_DECLARE_INTEGRAL_ID(PackId, uint64_t, 0)
+
+	tl::result<PackId> mountFront(AbsPath mountPoint, tl::unique_ref<IPack> pack);
+	tl::result<PackId> mountBack(AbsPath mountPoint, tl::unique_ref<IPack> pack);
+
+	//unmounts all the packs for this point. It basically deletes the mount point
+	cppcoro::generator<tl::unique_ref<IPack>> unmountAll();
+
+	//When unmounting, the Filesystem returns the pack back to you (if found)
+	tl::unique_ptr<IPack> unmount(PackId packId);
+
+	//Returns the physical location of the virtual pack. 
+	ConvertToNativePathResult convertToNativePath(const AbsPath& path) const override;
+
+	OpenSourceResult openSource(const AbsPath& path, SourceFlags flags = SourceFlags()) const override;
+	OpenStreamSourceResult openStreamSource(const AbsPath& path, SourceFlags flags = SourceFlags()) const override;
+	OpenMapSourceResult openMapSource(const AbsPath& path, MapView mapView = MapView(), SourceFlags flags = SourceFlags()) const override;
+	OpenSinkResult openSink(const AbsPath& path, Mode mode, SinkFlags flags = SinkFlags()) override;
+	OpenStreamSinkResult openStreamSink(const AbsPath& path, Mode mode, SinkFlags flags = SinkFlags()) override;
+	OpenMapSinkResult openMapSink(const AbsPath& path, Mode mode, size_t size, SinkFlags flags = SinkFlags()) override;
+
+	IsFileResult isFile(const AbsPath& path) const override;
+	IsFolderResult isFolder(const AbsPath& path) const override;
+	ExistsResult exists(const AbsPath& path) const override;
+
+	MakeFolderResult makeFolder(const AbsPath& path) override;
+
+	RenameResult rename(const AbsPath& path, const AbsPath& newPath) override;
+
+	RemoveResult remove(const AbsPath& path) override;
+	RemoveRecursivelyResult removeRecursively(const AbsPath& path) override;
+
+	CopyResult copy(const AbsPath& path, const AbsPath& newPath) override;
+
+	MakeHardLinkResult makeHardLink(const AbsPath& sourcePath, const AbsPath& linkPath) override;
+	MakeSoftLinkResult makeSymLink(const AbsPath& sourcePath, const AbsPath& linkPath) override;
+
+	SetWriteTimeResult setWriteTime(const AbsPath& path, time_t time) override;
+
+	GetStatResult getStat(const AbsPath& path) const override;
+
+	cppcoro::generator<EnumerateEntry> enumerate(const AbsPath& path) const override;
+	cppcoro::generator<EnumerateEntry> enumerateRecursively(const AbsPath& path) const override;
+
+private:
+	struct PackData
+	{
+		PackId id;
+		tl::unique_ref<IPack> pack;
+		AbsPath mountPoint;
+
+		explicit PackData(tl::unique_ref<IPack>&& pack) noexcept
+			: pack(std::move(pack))
+		{}
+
+		PackData(PackData&& other) noexcept = default;
+		PackData& operator=(PackData&& other) noexcept = default;
+		PackData(const PackData& other) noexcept = delete;
+		PackData& operator=(const PackData& other) noexcept = delete;
+	};
+	tl::vector<PackData> m_packsData;
+
+	void convertToPackPath(AbsPath& packPath, const AbsPath& path, const AbsPath& mountPoint) const;
+
+	enum class MountPolicy
+	{
+		Front, 		//the pack will be mounted over packs from the same mount point. This pack will take precedence
+		Back 		//the pack will be at the bottom of existing packs from the same mount point. Its streams will be searched last
+	};
+	tl::result<PackId> mount(AbsPath mountPoint, tl::unique_ref<IPack> pack, MountPolicy policy);
+
+};
+
+}