0e754875d1
Open should not be an interface exposed by Directory because it is the Archive thats implement the methed to open the directory. The service API of 3DS also implies this - Open is not a function of directory service, but is of FS main service
99 lines
3.1 KiB
C++
99 lines
3.1 KiB
C++
// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <cstddef>
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#include <memory>
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#include <string>
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#include <vector>
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#include "common/common_types.h"
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#include "common/file_util.h"
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#include "core/file_sys/archive_backend.h"
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#include "core/file_sys/directory_backend.h"
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#include "core/file_sys/file_backend.h"
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#include "core/hle/result.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// FileSys namespace
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namespace FileSys {
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/**
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* Helper which implements a backend accessing the host machine's filesystem.
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* This should be subclassed by concrete archive types, which will provide the
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* base directory on the host filesystem and override any required functionality.
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*/
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class DiskArchive : public ArchiveBackend {
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public:
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DiskArchive(const std::string& mount_point_) : mount_point(mount_point_) {}
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virtual std::string GetName() const override {
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return "DiskArchive: " + mount_point;
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}
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ResultVal<std::unique_ptr<FileBackend>> OpenFile(const Path& path,
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const Mode& mode) const override;
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ResultCode DeleteFile(const Path& path) const override;
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ResultCode RenameFile(const Path& src_path, const Path& dest_path) const override;
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ResultCode DeleteDirectory(const Path& path) const override;
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ResultCode DeleteDirectoryRecursively(const Path& path) const override;
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ResultCode CreateFile(const Path& path, u64 size) const override;
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ResultCode CreateDirectory(const Path& path) const override;
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ResultCode RenameDirectory(const Path& src_path, const Path& dest_path) const override;
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ResultVal<std::unique_ptr<DirectoryBackend>> OpenDirectory(const Path& path) const override;
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u64 GetFreeBytes() const override;
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protected:
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friend class DiskFile;
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friend class DiskDirectory;
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std::string mount_point;
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};
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class DiskFile : public FileBackend {
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public:
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DiskFile(const DiskArchive& archive, const Path& path, const Mode mode);
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ResultCode Open() override;
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ResultVal<size_t> Read(u64 offset, size_t length, u8* buffer) const override;
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ResultVal<size_t> Write(u64 offset, size_t length, bool flush, const u8* buffer) const override;
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u64 GetSize() const override;
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bool SetSize(u64 size) const override;
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bool Close() const override;
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void Flush() const override {
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file->Flush();
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}
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protected:
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std::string path;
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Mode mode;
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std::unique_ptr<FileUtil::IOFile> file;
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};
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class DiskDirectory : public DirectoryBackend {
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public:
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DiskDirectory(const std::string& path);
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~DiskDirectory() override {
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Close();
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}
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u32 Read(const u32 count, Entry* entries) override;
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bool Close() const override {
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return true;
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}
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protected:
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u32 total_entries_in_directory;
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FileUtil::FSTEntry directory;
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// We need to remember the last entry we returned, so a subsequent call to Read will continue
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// from the next one. This iterator will always point to the next unread entry.
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std::vector<FileUtil::FSTEntry>::iterator children_iterator;
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};
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} // namespace FileSys
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