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Dependencies:   F746_GUI SD_PlayerSkeleton F746_SAI_IO

mbed_src_STM32F7/common/FileBase.cpp@0:aa3fc5ad02f7, 2019-06-04 (annotated)

Committer:
phungductung
Date:
Tue Jun 04 09:08:29 2019 +0000
Revision:
0:aa3fc5ad02f7
SPKT

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phungductung 0:aa3fc5ad02f7 1 /* mbed Microcontroller Library
phungductung 0:aa3fc5ad02f7 2 * Copyright (c) 2006-2013 ARM Limited
phungductung 0:aa3fc5ad02f7 3 *
phungductung 0:aa3fc5ad02f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
phungductung 0:aa3fc5ad02f7 5 * you may not use this file except in compliance with the License.
phungductung 0:aa3fc5ad02f7 6 * You may obtain a copy of the License at
phungductung 0:aa3fc5ad02f7 7 *
phungductung 0:aa3fc5ad02f7 8 * http://www.apache.org/licenses/LICENSE-2.0
phungductung 0:aa3fc5ad02f7 9 *
phungductung 0:aa3fc5ad02f7 10 * Unless required by applicable law or agreed to in writing, software
phungductung 0:aa3fc5ad02f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
phungductung 0:aa3fc5ad02f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
phungductung 0:aa3fc5ad02f7 13 * See the License for the specific language governing permissions and
phungductung 0:aa3fc5ad02f7 14 * limitations under the License.
phungductung 0:aa3fc5ad02f7 15 */
phungductung 0:aa3fc5ad02f7 16 #include "FileBase.h"
phungductung 0:aa3fc5ad02f7 17
phungductung 0:aa3fc5ad02f7 18 namespace mbed {
phungductung 0:aa3fc5ad02f7 19
phungductung 0:aa3fc5ad02f7 20 FileBase *FileBase::_head = NULL;
phungductung 0:aa3fc5ad02f7 21
phungductung 0:aa3fc5ad02f7 22 FileBase::FileBase(const char *name, PathType t) : _next(NULL),
phungductung 0:aa3fc5ad02f7 23 _name(name),
phungductung 0:aa3fc5ad02f7 24 _path_type(t) {
phungductung 0:aa3fc5ad02f7 25 if (name != NULL) {
phungductung 0:aa3fc5ad02f7 26 // put this object at head of the list
phungductung 0:aa3fc5ad02f7 27 _next = _head;
phungductung 0:aa3fc5ad02f7 28 _head = this;
phungductung 0:aa3fc5ad02f7 29 } else {
phungductung 0:aa3fc5ad02f7 30 _next = NULL;
phungductung 0:aa3fc5ad02f7 31 }
phungductung 0:aa3fc5ad02f7 32 }
phungductung 0:aa3fc5ad02f7 33
phungductung 0:aa3fc5ad02f7 34 FileBase::~FileBase() {
phungductung 0:aa3fc5ad02f7 35 if (_name != NULL) {
phungductung 0:aa3fc5ad02f7 36 // remove this object from the list
phungductung 0:aa3fc5ad02f7 37 if (_head == this) { // first in the list, so just drop me
phungductung 0:aa3fc5ad02f7 38 _head = _next;
phungductung 0:aa3fc5ad02f7 39 } else { // find the object before me, then drop me
phungductung 0:aa3fc5ad02f7 40 FileBase *p = _head;
phungductung 0:aa3fc5ad02f7 41 while (p->_next != this) {
phungductung 0:aa3fc5ad02f7 42 p = p->_next;
phungductung 0:aa3fc5ad02f7 43 }
phungductung 0:aa3fc5ad02f7 44 p->_next = _next;
phungductung 0:aa3fc5ad02f7 45 }
phungductung 0:aa3fc5ad02f7 46 }
phungductung 0:aa3fc5ad02f7 47 }
phungductung 0:aa3fc5ad02f7 48
phungductung 0:aa3fc5ad02f7 49 FileBase *FileBase::lookup(const char *name, unsigned int len) {
phungductung 0:aa3fc5ad02f7 50 FileBase *p = _head;
phungductung 0:aa3fc5ad02f7 51 while (p != NULL) {
phungductung 0:aa3fc5ad02f7 52 /* Check that p->_name matches name and is the correct length */
phungductung 0:aa3fc5ad02f7 53 if (p->_name != NULL && std::strncmp(p->_name, name, len) == 0 && std::strlen(p->_name) == len) {
phungductung 0:aa3fc5ad02f7 54 return p;
phungductung 0:aa3fc5ad02f7 55 }
phungductung 0:aa3fc5ad02f7 56 p = p->_next;
phungductung 0:aa3fc5ad02f7 57 }
phungductung 0:aa3fc5ad02f7 58 return NULL;
phungductung 0:aa3fc5ad02f7 59 }
phungductung 0:aa3fc5ad02f7 60
phungductung 0:aa3fc5ad02f7 61 FileBase *FileBase::get(int n) {
phungductung 0:aa3fc5ad02f7 62 FileBase *p = _head;
phungductung 0:aa3fc5ad02f7 63 int m = 0;
phungductung 0:aa3fc5ad02f7 64 while (p != NULL) {
phungductung 0:aa3fc5ad02f7 65 if (m == n) return p;
phungductung 0:aa3fc5ad02f7 66
phungductung 0:aa3fc5ad02f7 67 m++;
phungductung 0:aa3fc5ad02f7 68 p = p->_next;
phungductung 0:aa3fc5ad02f7 69 }
phungductung 0:aa3fc5ad02f7 70 return NULL;
phungductung 0:aa3fc5ad02f7 71 }
phungductung 0:aa3fc5ad02f7 72
phungductung 0:aa3fc5ad02f7 73 const char* FileBase::getName(void) {
phungductung 0:aa3fc5ad02f7 74 return _name;
phungductung 0:aa3fc5ad02f7 75 }
phungductung 0:aa3fc5ad02f7 76
phungductung 0:aa3fc5ad02f7 77 PathType FileBase::getPathType(void) {
phungductung 0:aa3fc5ad02f7 78 return _path_type;
phungductung 0:aa3fc5ad02f7 79 }
phungductung 0:aa3fc5ad02f7 80
phungductung 0:aa3fc5ad02f7 81 } // namespace mbed
phungductung 0:aa3fc5ad02f7 82