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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
*/
#include <FileIO.h>
File::File(BridgeClass &b) : mode(255), bridge(b) {
// Empty
}
File::File(const char *_filename, uint8_t _mode, BridgeClass &b) : mode(_mode), bridge(b) {
filename = _filename;
uint8_t err;
char modes[] = {'r','w','a'};
handle = bridge.fileOpen(filename, modes[mode], err);
if (err != 0)
mode = 255; // In case of error keep the file closed
buffered = 0;
}
File::operator bool() {
return (mode != 255);
}
File::~File() {
close();
}
size_t File::write(uint8_t c) {
return write(&c, 1);
}
size_t File::write(const uint8_t *buf, size_t size) {
if (mode == 255)
return -1;
uint8_t err;
bridge.fileWrite(handle, buf, size, err);
if (err != 0)
return -err;
return size;
}
int File::read() {
doBuffer();
if (buffered == 0)
return -1; // no chars available
else {
buffered--;
return buffer[readPos++];
}
}
int File::peek() {
doBuffer();
if (buffered == 0)
return -1; // no chars available
else
return buffer[readPos];
}
boolean File::seek(uint32_t pos) {
uint8_t err;
bridge.fileSeek(handle, pos, err);
return err==0;
}
void File::doBuffer() {
// If there are already char in buffer exit
if (buffered > 0)
return;
// Try to buffer up to 32 characters
readPos = 0;
uint8_t err;
buffered = bridge.fileRead(handle, buffer, sizeof(buffer), err);
}
int File::available() {
// Look if there is new data available
doBuffer();
return buffered;
}
void File::flush() {
}
//int read(void *buf, uint16_t nbyte)
//uint32_t position()
//uint32_t size()
void File::close() {
if (mode == 255)
return;
bridge.fileClose(handle);
mode = 255;
}
const char *File::name() {
return filename.c_str();
}
//boolean isDirectory(void)
//File openNextFile(uint8_t mode = O_RDONLY);
//void rewindDirectory(void)
boolean SDClass::begin() {
return true;
}
File SDClass::open(const char *filename, uint8_t mode) {
// if (mode == FILE_READ) {
// if (exists(filename))
// return File(filename, mode);
// }
// if (mode == FILE_WRITE || mode == FILE_APPEND) {
return File(filename, mode);
// }
// return File();
}
boolean SDClass::exists(const char *filepath) {
Process ls;
ls.begin("ls");
ls.addParameter(filepath);
int res = ls.run();
return (res == 0);
}
boolean SDClass::mkdir(const char *filepath) {
Process mk;
mk.begin("mkdir");
mk.addParameter("-p");
mk.addParameter(filepath);
int res = mk.run();
return (res == 0);
}
boolean SDClass::remove(const char *filepath) {
Process rm;
rm.begin("rm");
rm.addParameter(filepath);
int res = rm.run();
return (res == 0);
}
boolean SDClass::rmdir(const char *filepath) {
Process rm;
rm.begin("rmdir");
rm.addParameter(filepath);
int res = rm.run();
return (res == 0);
}
SDClass SD;
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