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/* 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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef POSIX_FILESYSTEM_H
#define POSIX_FILESYSTEM_H
#include "backends/fs/abstract-fs.h"
#ifdef MACOSX
#include <sys/types.h>
#endif
#include <unistd.h>
/**
* Implementation of the ScummVM file system API based on POSIX.
*
* Parts of this class are documented in the base interface class, AbstractFSNode.
*/
class POSIXFilesystemNode : public AbstractFSNode {
protected:
Common::String _displayName;
Common::String _path;
bool _isDirectory;
bool _isValid;
virtual AbstractFSNode *makeNode(const Common::String &path) const {
return new POSIXFilesystemNode(path);
}
/**
* Plain constructor, for internal use only (hence protected).
*/
POSIXFilesystemNode() : _isDirectory(false), _isValid(false) {}
public:
/**
* Creates a POSIXFilesystemNode for a given path.
*
* @param path the path the new node should point to.
*/
POSIXFilesystemNode(const Common::String &path);
virtual bool exists() const { return access(_path.c_str(), F_OK) == 0; }
virtual Common::String getDisplayName() const { return _displayName; }
virtual Common::String getName() const { return _displayName; }
virtual Common::String getPath() const { return _path; }
virtual bool isDirectory() const { return _isDirectory; }
virtual bool isReadable() const { return access(_path.c_str(), R_OK) == 0; }
virtual bool isWritable() const { return access(_path.c_str(), W_OK) == 0; }
virtual AbstractFSNode *getChild(const Common::String &n) const;
virtual bool getChildren(AbstractFSList &list, ListMode mode, bool hidden) const;
virtual AbstractFSNode *getParent() const;
virtual Common::SeekableReadStream *createReadStream();
virtual Common::WriteStream *createWriteStream();
virtual bool create(bool isDirectoryFlag);
private:
/**
* Tests and sets the _isValid and _isDirectory flags, using the stat() function.
*/
virtual void setFlags();
};
namespace Posix {
/**
* Assure that a directory path exists.
*
* @param dir The path which is required to exist.
* @param prefix An (optional) prefix which should not be created if non existent.
* prefix is prepended to dir if supplied.
* @return true in case the directoy exists (or was created), false otherwise.
*/
bool assureDirectoryExists(const Common::String &dir, const char *prefix = nullptr);
} // End of namespace Posix
#endif
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