91 lines
2.6 KiB
C++
91 lines
2.6 KiB
C++
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/* mbed Microcontroller Library
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* Copyright (c) 2006-2012 ARM Limited
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "ff.h"
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#include "ffconf.h"
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#include "mbed_debug.h"
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#include "FATFileHandle.h"
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FATFileHandle::FATFileHandle(FIL fh) {
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_fh = fh;
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}
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int FATFileHandle::close() {
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int retval = f_close(&_fh);
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delete this;
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return retval;
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}
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ssize_t FATFileHandle::write(const void* buffer, size_t length) {
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UINT n;
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FRESULT res = f_write(&_fh, buffer, length, &n);
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if (res) {
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debug_if(FFS_DBG, "f_write() failed: %d", res);
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return -1;
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}
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return n;
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}
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ssize_t FATFileHandle::read(void* buffer, size_t length) {
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debug_if(FFS_DBG, "read(%d)\n", length);
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UINT n;
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FRESULT res = f_read(&_fh, buffer, length, &n);
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if (res) {
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debug_if(FFS_DBG, "f_read() failed: %d\n", res);
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return -1;
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}
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return n;
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}
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int FATFileHandle::isatty() {
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return 0;
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}
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off_t FATFileHandle::lseek(off_t position, int whence) {
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if (whence == SEEK_END) {
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position += _fh.fsize;
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} else if(whence==SEEK_CUR) {
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position += _fh.fptr;
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}
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FRESULT res = f_lseek(&_fh, position);
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if (res) {
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debug_if(FFS_DBG, "lseek failed: %d\n", res);
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return -1;
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} else {
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debug_if(FFS_DBG, "lseek OK, returning %i\n", _fh.fptr);
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return _fh.fptr;
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}
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}
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int FATFileHandle::fsync() {
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FRESULT res = f_sync(&_fh);
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if (res) {
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debug_if(FFS_DBG, "f_sync() failed: %d\n", res);
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return -1;
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}
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return 0;
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}
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off_t FATFileHandle::flen() {
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return _fh.fsize;
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}
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