scummvm/backends/fs/ds/ds-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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

#ifndef _DS_FS_H
#define _DS_FS_H

//#include <NDS/ARM9/console.h>
#include "common/fs.h"
#include "zipreader.h"
#include "ramsave.h"
#include "scummconsole.h"
#include "fat/gba_nds_fat.h"
#include "backends/fs/abstract-fs.h"

namespace DS {

/**
 * Implementation of the ScummVM file system API.
 * This class is used when a Flash cart is in use.
 *
 * Parts of this class are documented in the base interface class, AbstractFilesystemNode.
 */
class DSFileSystemNode : public AbstractFilesystemNode {
protected:
	static ZipFile* _zipFile;

	String _displayName;
	String _path;
	bool _isDirectory;
	bool _isValid;

public:
	/**
	 * Creates a DSFilesystemNode with the root node as path.
	 */
	DSFileSystemNode();

	/**
	 * Creates a DSFilesystemNode for a given path.
	 *
	 * @param path String with the path the new node should point to.
	 */
	DSFileSystemNode(const String &path);

	/**
	 * Creates a DSFilesystemNode for a given path.
	 *
	 * @param path String with the path the new node should point to.
	 * @param path true if path is a directory, false otherwise.
	 */
	DSFileSystemNode(const String& path, bool isDir);

	/**
	 * Copy constructor.
	 */
	DSFileSystemNode(const DSFileSystemNode *node);

	virtual bool exists() const { return true; }		//FIXME: this is just a stub
	virtual String getDisplayName() const {  return _displayName; }
	virtual String getName() const {  return _displayName; }
	virtual String getPath() const { return _path; }
	virtual bool isDirectory() const { return _isDirectory; }
	virtual bool isReadable() const { return true; }	//FIXME: this is just a stub
	virtual bool isWritable() const { return true; }	//FIXME: this is just a stub

	/**
	 * Returns a copy of this node.
	 */
	virtual AbstractFilesystemNode *clone() const { return new DSFileSystemNode(this); }
	virtual AbstractFilesystemNode *getChild(const Common::String& name) const;
	virtual bool getChildren(AbstractFSList &list, ListMode mode, bool hidden) const;
	virtual AbstractFilesystemNode *getParent() const;

	virtual Common::SeekableReadStream *openForReading();
	virtual Common::WriteStream *openForWriting();

	/**
	 * Returns the zip file this node points to.
	 * TODO: check this documentation.
	 */
	static ZipFile* getZip() { return _zipFile; }
};

 /**
 * Implementation of the ScummVM file system API.
 * This class is used when the GBAMP (GBA Movie Player) is used with a CompactFlash card.
 *
 * Parts of this class are documented in the base interface class, AbstractFilesystemNode.
 */
class GBAMPFileSystemNode : public AbstractFilesystemNode {
protected:
	String _displayName;
	String _path;
	bool _isDirectory;
	bool _isValid;

public:
	/**
	 * Creates a GBAMPFilesystemNode with the root node as path.
	 */
	GBAMPFileSystemNode();

	/**
	 * Creates a GBAMPFilesystemNode for a given path.
	 *
	 * @param path String with the path the new node should point to.
	 */
	GBAMPFileSystemNode(const String &path);

	/**
	 * Creates a DSFilesystemNode for a given path.
	 *
	 * @param path String with the path the new node should point to.
	 * @param path true if path is a directory, false otherwise.
	 */
	GBAMPFileSystemNode(const String &path, bool isDirectory);

	/**
	 * Copy constructor.
	 */
	GBAMPFileSystemNode(const GBAMPFileSystemNode *node);

	virtual bool exists() const { return _isValid || _isDirectory; }
	virtual String getDisplayName() const {  return _displayName; }
	virtual String getName() const {  return _displayName; }
	virtual String getPath() const { return _path; }
	virtual bool isDirectory() const { return _isDirectory; }
	virtual bool isReadable() const { return true; }	//FIXME: this is just a stub
	virtual bool isWritable() const { return true; }	//FIXME: this is just a stub

	/**
	 * Returns a copy of this node.
	 */
	virtual AbstractFilesystemNode *clone() const { return new GBAMPFileSystemNode(this); }
	virtual AbstractFilesystemNode *getChild(const Common::String& name) const;
	virtual bool getChildren(AbstractFSList &list, ListMode mode, bool hidden) const;
	virtual AbstractFilesystemNode *getParent() const;

	virtual Common::SeekableReadStream *openForReading();
	virtual Common::WriteStream *openForWriting();
};

struct fileHandle {
	int pos;
	bool used;
	char* data;
	int size;

	DSSaveFile* sramFile;
};

#undef stderr
#undef stdout
#undef stdin

#define stdout ((DS::fileHandle*) -1)
#define stderr ((DS::fileHandle*) -2)
#define stdin ((DS::fileHandle*) -3)

#define FILE DS::fileHandle

// Please do not remove any of these prototypes that appear not to be required.
FILE*	std_fopen(const char* name, const char* mode);
void	std_fclose(FILE* handle);
int		std_getc(FILE* handle);
size_t	std_fread(const void* ptr, size_t size, size_t numItems, FILE* handle);
size_t	std_fwrite(const void* ptr, size_t size, size_t numItems, FILE* handle);
bool	std_feof(FILE* handle);
long int std_ftell(FILE* handle);
int		std_fseek(FILE* handle, long int offset, int whence);
void	std_clearerr(FILE* handle);
void	std_cwd(char* dir);
void	std_fflush(FILE* handle);

} //namespace DS

#endif //_DS_FS_H