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Copyright (c) 2013 Arduino LLC. All right reserved.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __FILEIO_H__
#define __FILEIO_H__
#include <Process.h>
#define FILE_READ 0
#define FILE_WRITE 1
#define FILE_APPEND 2
namespace BridgeLib {
class File : public Stream {
public:
File(BridgeClass &b = Bridge);
File(const char *_filename, uint8_t _mode, BridgeClass &b = Bridge);
~File();
virtual size_t write(uint8_t);
virtual size_t write(const uint8_t *buf, size_t size);
virtual int read();
virtual int peek();
virtual int available();
virtual void flush();
int read(void *buf, uint16_t nbyte);
boolean seek(uint32_t pos);
uint32_t position();
uint32_t size();
void close();
operator bool();
const char * name();
boolean isDirectory();
File openNextFile(uint8_t mode = FILE_READ);
void rewindDirectory(void);
//using Print::write;
private:
void doBuffer();
uint8_t buffered;
uint8_t readPos;
uint16_t dirPosition;
static const int BUFFER_SIZE = 64;
uint8_t buffer[BUFFER_SIZE];
private:
BridgeClass &bridge;
String filename;
uint8_t mode;
uint8_t handle;
};
class FileSystemClass {
public:
FileSystemClass() : bridge(Bridge) { }
FileSystemClass(BridgeClass &_b) : bridge(_b) { }
boolean begin();
// Open the specified file/directory with the supplied mode (e.g. read or
// write, etc). Returns a File object for interacting with the file.
// Note that currently only one file can be open at a time.
File open(const char *filename, uint8_t mode = FILE_READ);
// Methods to determine if the requested file path exists.
boolean exists(const char *filepath);
// Create the requested directory hierarchy--if intermediate directories
// do not exist they will be created.
boolean mkdir(const char *filepath);
// Delete the file.
boolean remove(const char *filepath);
boolean rmdir(const char *filepath);
private:
friend class File;
BridgeClass &bridge;
};
extern FileSystemClass FileSystem;
};
// We enclose File and FileSystem classes in namespace BridgeLib to avoid
// conflicts with legacy SD library.
// This ensure compatibility with older sketches that uses only Bridge lib
// (the user can still use File instead of BridgeFile)
using namespace BridgeLib;
// This allows sketches to use BridgeLib::File together with SD library
// (you must use BridgeFile instead of File when needed to disambiguate)
typedef BridgeLib::File BridgeFile;
typedef BridgeLib::FileSystemClass BridgeFileSystemClass;
#define BridgeFileSystem BridgeLib::FileSystem
#endif
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