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posix-fs.h

/* 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.
 *
 * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-0-13-0/backends/fs/posix/posix-fs.h $
 * $Id: posix-fs.h 35648 2009-01-01 15:06:43Z sev $
 */

#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.
 */
00040 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).
       */
00054       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; }
00065       virtual Common::String getDisplayName() const { return _displayName; }
00066       virtual Common::String getName() const { return _displayName; }
00067       virtual Common::String getPath() const { return _path; }
00068       virtual bool isDirectory() const { return _isDirectory; }
00069       virtual bool isReadable() const { return access(_path.c_str(), R_OK) == 0; }
00070       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 *openForReading();
      virtual Common::WriteStream *openForWriting();

private:
      /**
       * Tests and sets the _isValid and _isDirectory flags, using the stat() function.
       */
      virtual void setFlags();
};

#endif /*POSIX_FILESYSTEM_H*/

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