Daniel Vizcaya / Mbed OS 04_RTOS_Embebidos

Entrega 3er corte - sistemas embebidos

mbed-os/features/filesystem/File.cpp@0:6ad07c9019fd, 2018-05-30 (annotated)

Committer:
Bethory
Date:
Wed May 30 00:01:50 2018 +0000
Revision:
0:6ad07c9019fd
Codigo de tales para todos los pasculaes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Bethory 0:6ad07c9019fd 1 /* mbed Microcontroller Library
Bethory 0:6ad07c9019fd 2 * Copyright (c) 2015 ARM Limited
Bethory 0:6ad07c9019fd 3 *
Bethory 0:6ad07c9019fd 4 * Licensed under the Apache License, Version 2.0 (the "License");
Bethory 0:6ad07c9019fd 5 * you may not use this file except in compliance with the License.
Bethory 0:6ad07c9019fd 6 * You may obtain a copy of the License at
Bethory 0:6ad07c9019fd 7 *
Bethory 0:6ad07c9019fd 8 * http://www.apache.org/licenses/LICENSE-2.0
Bethory 0:6ad07c9019fd 9 *
Bethory 0:6ad07c9019fd 10 * Unless required by applicable law or agreed to in writing, software
Bethory 0:6ad07c9019fd 11 * distributed under the License is distributed on an "AS IS" BASIS,
Bethory 0:6ad07c9019fd 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Bethory 0:6ad07c9019fd 13 * See the License for the specific language governing permissions and
Bethory 0:6ad07c9019fd 14 * limitations under the License.
Bethory 0:6ad07c9019fd 15 */
Bethory 0:6ad07c9019fd 16
Bethory 0:6ad07c9019fd 17 #include "File.h"
Bethory 0:6ad07c9019fd 18 #include "mbed.h"
Bethory 0:6ad07c9019fd 19 #include <errno.h>
Bethory 0:6ad07c9019fd 20
Bethory 0:6ad07c9019fd 21
Bethory 0:6ad07c9019fd 22 File::File()
Bethory 0:6ad07c9019fd 23 : _fs(0), _file(0)
Bethory 0:6ad07c9019fd 24 {
Bethory 0:6ad07c9019fd 25 }
Bethory 0:6ad07c9019fd 26
Bethory 0:6ad07c9019fd 27 File::File(FileSystem *fs, const char *path, int flags)
Bethory 0:6ad07c9019fd 28 : _fs(0), _file(0)
Bethory 0:6ad07c9019fd 29 {
Bethory 0:6ad07c9019fd 30 open(fs, path, flags);
Bethory 0:6ad07c9019fd 31 }
Bethory 0:6ad07c9019fd 32
Bethory 0:6ad07c9019fd 33 File::~File()
Bethory 0:6ad07c9019fd 34 {
Bethory 0:6ad07c9019fd 35 if (_fs) {
Bethory 0:6ad07c9019fd 36 close();
Bethory 0:6ad07c9019fd 37 }
Bethory 0:6ad07c9019fd 38 }
Bethory 0:6ad07c9019fd 39
Bethory 0:6ad07c9019fd 40 int File::open(FileSystem *fs, const char *path, int flags)
Bethory 0:6ad07c9019fd 41 {
Bethory 0:6ad07c9019fd 42 if (_fs) {
Bethory 0:6ad07c9019fd 43 return -EINVAL;
Bethory 0:6ad07c9019fd 44 }
Bethory 0:6ad07c9019fd 45
Bethory 0:6ad07c9019fd 46 int err = fs->file_open(&_file, path, flags);
Bethory 0:6ad07c9019fd 47 if (!err) {
Bethory 0:6ad07c9019fd 48 _fs = fs;
Bethory 0:6ad07c9019fd 49 }
Bethory 0:6ad07c9019fd 50
Bethory 0:6ad07c9019fd 51 return err;
Bethory 0:6ad07c9019fd 52 }
Bethory 0:6ad07c9019fd 53
Bethory 0:6ad07c9019fd 54 int File::close()
Bethory 0:6ad07c9019fd 55 {
Bethory 0:6ad07c9019fd 56 if (!_fs) {
Bethory 0:6ad07c9019fd 57 return -EINVAL;
Bethory 0:6ad07c9019fd 58 }
Bethory 0:6ad07c9019fd 59
Bethory 0:6ad07c9019fd 60 int err = _fs->file_close(_file);
Bethory 0:6ad07c9019fd 61 _fs = 0;
Bethory 0:6ad07c9019fd 62 return err;
Bethory 0:6ad07c9019fd 63 }
Bethory 0:6ad07c9019fd 64
Bethory 0:6ad07c9019fd 65 ssize_t File::read(void *buffer, size_t len)
Bethory 0:6ad07c9019fd 66 {
Bethory 0:6ad07c9019fd 67 MBED_ASSERT(_fs);
Bethory 0:6ad07c9019fd 68 return _fs->file_read(_file, buffer, len);
Bethory 0:6ad07c9019fd 69 }
Bethory 0:6ad07c9019fd 70
Bethory 0:6ad07c9019fd 71 ssize_t File::write(const void *buffer, size_t len)
Bethory 0:6ad07c9019fd 72 {
Bethory 0:6ad07c9019fd 73 MBED_ASSERT(_fs);
Bethory 0:6ad07c9019fd 74 return _fs->file_write(_file, buffer, len);
Bethory 0:6ad07c9019fd 75 }
Bethory 0:6ad07c9019fd 76
Bethory 0:6ad07c9019fd 77 int File::sync()
Bethory 0:6ad07c9019fd 78 {
Bethory 0:6ad07c9019fd 79 MBED_ASSERT(_fs);
Bethory 0:6ad07c9019fd 80 return _fs->file_sync(_file);
Bethory 0:6ad07c9019fd 81 }
Bethory 0:6ad07c9019fd 82
Bethory 0:6ad07c9019fd 83 int File::isatty()
Bethory 0:6ad07c9019fd 84 {
Bethory 0:6ad07c9019fd 85 MBED_ASSERT(_fs);
Bethory 0:6ad07c9019fd 86 return _fs->file_isatty(_file);
Bethory 0:6ad07c9019fd 87 }
Bethory 0:6ad07c9019fd 88
Bethory 0:6ad07c9019fd 89 off_t File::seek(off_t offset, int whence)
Bethory 0:6ad07c9019fd 90 {
Bethory 0:6ad07c9019fd 91 MBED_ASSERT(_fs);
Bethory 0:6ad07c9019fd 92 return _fs->file_seek(_file, offset, whence);
Bethory 0:6ad07c9019fd 93 }
Bethory 0:6ad07c9019fd 94
Bethory 0:6ad07c9019fd 95 off_t File::tell()
Bethory 0:6ad07c9019fd 96 {
Bethory 0:6ad07c9019fd 97 MBED_ASSERT(_fs);
Bethory 0:6ad07c9019fd 98 return _fs->file_tell(_file);
Bethory 0:6ad07c9019fd 99 }
Bethory 0:6ad07c9019fd 100
Bethory 0:6ad07c9019fd 101 void File::rewind()
Bethory 0:6ad07c9019fd 102 {
Bethory 0:6ad07c9019fd 103 MBED_ASSERT(_fs);
Bethory 0:6ad07c9019fd 104 return _fs->file_rewind(_file);
Bethory 0:6ad07c9019fd 105 }
Bethory 0:6ad07c9019fd 106
Bethory 0:6ad07c9019fd 107 off_t File::size()
Bethory 0:6ad07c9019fd 108 {
Bethory 0:6ad07c9019fd 109 MBED_ASSERT(_fs);
Bethory 0:6ad07c9019fd 110 return _fs->file_size(_file);
Bethory 0:6ad07c9019fd 111 }
Bethory 0:6ad07c9019fd 112