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FS.Archive: Clean up treatment of archives and their handles

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- Refactor FS::Archive internals to make Archive creation and lifetime
  management clearer.
- Remove the "Archive as a File" hack.
- Implement 64-bit Archive handles.
This commit is contained in:
Yuri Kunde Schlesner 2014-12-15 06:41:02 -02:00
parent 0931a42af0
commit 83e6e4ffec
11 changed files with 208 additions and 398 deletions
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30
src/core/file_sys/archive_backend.h
View file

@ -220,36 +220,6 @@ public:
* @return Opened directory, or nullptr
*/
virtual std::unique_ptr<DirectoryBackend> OpenDirectory(const Path& path) const = 0;
/**
* Read data from the archive
* @param offset Offset in bytes to start reading data from
* @param length Length in bytes of data to read from archive
* @param buffer Buffer to read data into
* @return Number of bytes read
*/
virtual size_t Read(const u64 offset, const u32 length, u8* buffer) const = 0;
/**
* Write data to the archive
* @param offset Offset in bytes to start writing data to
* @param length Length in bytes of data to write to archive
* @param buffer Buffer to write data from
* @param flush The flush parameters (0 == do not flush)
* @return Number of bytes written
*/
virtual size_t Write(const u64 offset, const u32 length, const u32 flush, u8* buffer) = 0;
/**
* Get the size of the archive in bytes
* @return Size of the archive in bytes
*/
virtual size_t GetSize() const = 0;
/**
* Set the size of the archive in bytes
*/
virtual void SetSize(const u64 size) = 0;
};
} // namespace FileSys

50
src/core/file_sys/archive_romfs.cpp
View file

@ -2,6 +2,8 @@
// Licensed under GPLv2
// Refer to the license.txt file included.
#include <memory>
#include "common/common_types.h"
#include "core/file_sys/archive_romfs.h"
@ -20,9 +22,6 @@ Archive_RomFS::Archive_RomFS(const Loader::AppLoader& app_loader) {
}
}
Archive_RomFS::~Archive_RomFS() {
}
/**
* Open a file specified by its path, using the specified mode
* @param path Path relative to the archive
@ -30,7 +29,7 @@ Archive_RomFS::~Archive_RomFS() {
* @return Opened file, or nullptr
*/
std::unique_ptr<FileBackend> Archive_RomFS::OpenFile(const Path& path, const Mode mode) const {
return std::unique_ptr<FileBackend>(new File_RomFS);
return std::make_unique<File_RomFS>(this);
}
/**
@ -79,48 +78,7 @@ bool Archive_RomFS::RenameDirectory(const FileSys::Path& src_path, const FileSys
* @return Opened directory, or nullptr
*/
std::unique_ptr<DirectoryBackend> Archive_RomFS::OpenDirectory(const Path& path) const {
return std::unique_ptr<DirectoryBackend>(new Directory_RomFS);
}
/**
* Read data from the archive
* @param offset Offset in bytes to start reading data from
* @param length Length in bytes of data to read from archive
* @param buffer Buffer to read data into
* @return Number of bytes read
*/
size_t Archive_RomFS::Read(const u64 offset, const u32 length, u8* buffer) const {
LOG_TRACE(Service_FS, "called offset=%llu, length=%d", offset, length);
memcpy(buffer, &raw_data[(u32)offset], length);
return length;
}
/**
* Write data to the archive
* @param offset Offset in bytes to start writing data to
* @param length Length in bytes of data to write to archive
* @param buffer Buffer to write data from
* @param flush The flush parameters (0 == do not flush)
* @return Number of bytes written
*/
size_t Archive_RomFS::Write(const u64 offset, const u32 length, const u32 flush, u8* buffer) {
LOG_WARNING(Service_FS, "Attempted to write to ROMFS.");
return 0;
}
/**
* Get the size of the archive in bytes
* @return Size of the archive in bytes
*/
size_t Archive_RomFS::GetSize() const {
return sizeof(u8) * raw_data.size();
}
/**
* Set the size of the archive in bytes
*/
void Archive_RomFS::SetSize(const u64 size) {
LOG_WARNING(Service_FS, "Attempted to set the size of ROMFS");
return std::make_unique<Directory_RomFS>();
}
} // namespace FileSys

33
src/core/file_sys/archive_romfs.h
View file

@ -20,7 +20,6 @@ namespace FileSys {
class Archive_RomFS final : public ArchiveBackend {
public:
Archive_RomFS(const Loader::AppLoader& app_loader);
~Archive_RomFS() override;
std::string GetName() const override { return "RomFS"; }
@ -76,37 +75,9 @@ public:
*/
std::unique_ptr<DirectoryBackend> OpenDirectory(const Path& path) const override;
/**
* Read data from the archive
* @param offset Offset in bytes to start reading data from
* @param length Length in bytes of data to read from archive
* @param buffer Buffer to read data into
* @return Number of bytes read
*/
size_t Read(const u64 offset, const u32 length, u8* buffer) const override;
/**
* Write data to the archive
* @param offset Offset in bytes to start writing data to
* @param length Length in bytes of data to write to archive
* @param buffer Buffer to write data from
* @param flush The flush parameters (0 == do not flush)
* @return Number of bytes written
*/
size_t Write(const u64 offset, const u32 length, const u32 flush, u8* buffer) override;
/**
* Get the size of the archive in bytes
* @return Size of the archive in bytes
*/
size_t GetSize() const override;
/**
* Set the size of the archive in bytes
*/
void SetSize(const u64 size) override;
private:
friend class File_RomFS;
std::vector<u8> raw_data;
};

41
src/core/file_sys/archive_sdmc.cpp
View file

@ -105,47 +105,6 @@ std::unique_ptr<DirectoryBackend> Archive_SDMC::OpenDirectory(const Path& path)
return std::unique_ptr<DirectoryBackend>(directory);
}
/**
* Read data from the archive
* @param offset Offset in bytes to start reading archive from
* @param length Length in bytes to read data from archive
* @param buffer Buffer to read data into
* @return Number of bytes read
*/
size_t Archive_SDMC::Read(const u64 offset, const u32 length, u8* buffer) const {
LOG_ERROR(Service_FS, "(UNIMPLEMENTED)");
return -1;
}
/**
* Write data to the archive
* @param offset Offset in bytes to start writing data to
* @param length Length in bytes of data to write to archive
* @param buffer Buffer to write data from
* @param flush The flush parameters (0 == do not flush)
* @return Number of bytes written
*/
size_t Archive_SDMC::Write(const u64 offset, const u32 length, const u32 flush, u8* buffer) {
LOG_ERROR(Service_FS, "(UNIMPLEMENTED)");
return -1;
}
/**
* Get the size of the archive in bytes
* @return Size of the archive in bytes
*/
size_t Archive_SDMC::GetSize() const {
LOG_ERROR(Service_FS, "(UNIMPLEMENTED)");
return 0;
}
/**
* Set the size of the archive in bytes
*/
void Archive_SDMC::SetSize(const u64 size) {
LOG_ERROR(Service_FS, "(UNIMPLEMENTED)");
}
/**
* Getter for the path used for this Archive
* @return Mount point of that passthrough archive

30
src/core/file_sys/archive_sdmc.h
View file

@ -80,36 +80,6 @@ public:
*/
std::unique_ptr<DirectoryBackend> OpenDirectory(const Path& path) const override;
/**
* Read data from the archive
* @param offset Offset in bytes to start reading archive from
* @param length Length in bytes to read data from archive
* @param buffer Buffer to read data into
* @return Number of bytes read
*/
size_t Read(const u64 offset, const u32 length, u8* buffer) const override;
/**
* Write data to the archive
* @param offset Offset in bytes to start writing data to
* @param length Length in bytes of data to write to archive
* @param buffer Buffer to write data from
* @param flush The flush parameters (0 == do not flush)
* @return Number of bytes written
*/
size_t Write(const u64 offset, const u32 length, const u32 flush, u8* buffer) override;
/**
* Get the size of the archive in bytes
* @return Size of the archive in bytes
*/
size_t GetSize() const override;
/**
* Set the size of the archive in bytes
*/
void SetSize(const u64 size) override;
/**
* Getter for the path used for this Archive
* @return Mount point of that passthrough archive

19
src/core/file_sys/file_romfs.cpp
View file

@ -5,24 +5,19 @@
#include "common/common_types.h"
#include "core/file_sys/file_romfs.h"
#include "core/file_sys/archive_romfs.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// FileSys namespace
namespace FileSys {
File_RomFS::File_RomFS() {
}
File_RomFS::~File_RomFS() {
}
/**
* Open the file
* @return true if the file opened correctly
*/
bool File_RomFS::Open() {
return false;
return true;
}
/**
@ -33,7 +28,9 @@ bool File_RomFS::Open() {
* @return Number of bytes read
*/
size_t File_RomFS::Read(const u64 offset, const u32 length, u8* buffer) const {
return -1;
LOG_TRACE(Service_FS, "called offset=%llu, length=%d", offset, length);
memcpy(buffer, &archive->raw_data[(u32)offset], length);
return length;
}
/**
@ -45,7 +42,8 @@ size_t File_RomFS::Read(const u64 offset, const u32 length, u8* buffer) const {
* @return Number of bytes written
*/
size_t File_RomFS::Write(const u64 offset, const u32 length, const u32 flush, const u8* buffer) const {
return -1;
LOG_WARNING(Service_FS, "Attempted to write to ROMFS.");
return 0;
}
/**
@ -53,7 +51,7 @@ size_t File_RomFS::Write(const u64 offset, const u32 length, const u32 flush, co
* @return Size of the file in bytes
*/
size_t File_RomFS::GetSize() const {
return -1;
return sizeof(u8) * archive->raw_data.size();
}
/**
@ -62,6 +60,7 @@ size_t File_RomFS::GetSize() const {
* @return true if successful
*/
bool File_RomFS::SetSize(const u64 size) const {
LOG_WARNING(Service_FS, "Attempted to set the size of ROMFS");
return false;
}

8
src/core/file_sys/file_romfs.h
View file

@ -14,10 +14,11 @@
namespace FileSys {
class Archive_RomFS;
class File_RomFS final : public FileBackend {
public:
File_RomFS();
~File_RomFS() override;
File_RomFS(const Archive_RomFS* archive) : archive(archive) {}
/**
* Open the file
@ -62,6 +63,9 @@ public:
* @return true if the file closed correctly
*/
bool Close() const override;
private:
const Archive_RomFS* archive;
};
} // namespace FileSys