scummvm/backends/fs/fs-factory.h
Thierry Crozat ab13d18e58 BACKENDS: Add function in FS Factory to map scummvm path to system path
In most cases they are the same, but in the case of a sandboxed filesystem,
they may be different. Mapping to the full system path allows using the
path with system functions, such as fopen() or third party libraries (for
example to pass a soundfont path to the fluidsynth library).
2023-12-03 16:17:32 +00:00

78 lines
2.7 KiB
C++

/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef FILESYSTEM_FACTORY_H
#define FILESYSTEM_FACTORY_H
#include "common/str.h"
#include "backends/fs/abstract-fs.h"
/**
* Creates concrete FSNode objects depending on the current architecture.
*/
class FilesystemFactory {
public:
/**
* Destructor.
*/
virtual ~FilesystemFactory() {}
/**
* Returns a node representing the "current directory".
* If your system does not support this concept, you can either try to
* emulate it or simply return some "sensible" default directory node,
* e.g. the same value as getRoot() returns.
*/
virtual AbstractFSNode *makeCurrentDirectoryFileNode() const = 0;
/**
* Construct a node based on a path; the path is in the same format as it
* would be for calls to fopen().
*
* Furthermore getNodeForPath(oldNode.path()) should create a new node
* identical to oldNode. Hence, we can use the "path" value for persistent
* storage e.g. in the config file.
*
* @param path The path string to create a FSNode for.
*/
virtual AbstractFSNode *makeFileNodePath(const Common::String &path) const = 0;
/**
* Returns a special node representing the filesystem root.
* The starting point for any file system browsing.
*
* On Unix, this will be simply the node for / (the root directory).
* On Windows, it will be a special node which "contains" all drives (C:, D:, E:).
*/
virtual AbstractFSNode *makeRootFileNode() const = 0;
/**
* Returns a path suitable for systen functions such as fopen() for the given ScummVM path,
*
* In most cases the returned path is the same as the given path, but it may be different, for
* example when the application is sandboxed and ScummVM path are relative to the saandbox
* root.
*/
virtual Common::String getSystemFullPath(const Common::String& path) const { return path; }
};
#endif /*FILESYSTEM_FACTORY_H*/