PHung Tung / DISCO-F746_WAV_PLAYER

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Dependencies:   F746_GUI SD_PlayerSkeleton F746_SAI_IO

SRC_STM32F7/common/FileBase.cpp@0:8ede47d38d10, 2019-06-04 (annotated)

Committer:
phungductung
Date:
Tue Jun 04 21:37:21 2019 +0000
Revision:
0:8ede47d38d10
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phungductung 0:8ede47d38d10 1 /* mbed Microcontroller Library
phungductung 0:8ede47d38d10 2 * Copyright (c) 2006-2013 ARM Limited
phungductung 0:8ede47d38d10 3 *
phungductung 0:8ede47d38d10 4 * Licensed under the Apache License, Version 2.0 (the "License");
phungductung 0:8ede47d38d10 5 * you may not use this file except in compliance with the License.
phungductung 0:8ede47d38d10 6 * You may obtain a copy of the License at
phungductung 0:8ede47d38d10 7 *
phungductung 0:8ede47d38d10 8 * http://www.apache.org/licenses/LICENSE-2.0
phungductung 0:8ede47d38d10 9 *
phungductung 0:8ede47d38d10 10 * Unless required by applicable law or agreed to in writing, software
phungductung 0:8ede47d38d10 11 * distributed under the License is distributed on an "AS IS" BASIS,
phungductung 0:8ede47d38d10 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
phungductung 0:8ede47d38d10 13 * See the License for the specific language governing permissions and
phungductung 0:8ede47d38d10 14 * limitations under the License.
phungductung 0:8ede47d38d10 15 */
phungductung 0:8ede47d38d10 16 #include "FileBase.h"
phungductung 0:8ede47d38d10 17
phungductung 0:8ede47d38d10 18 namespace mbed {
phungductung 0:8ede47d38d10 19
phungductung 0:8ede47d38d10 20 FileBase *FileBase::_head = NULL;
phungductung 0:8ede47d38d10 21
phungductung 0:8ede47d38d10 22 FileBase::FileBase(const char *name, PathType t) : _next(NULL),
phungductung 0:8ede47d38d10 23 _name(name),
phungductung 0:8ede47d38d10 24 _path_type(t) {
phungductung 0:8ede47d38d10 25 if (name != NULL) {
phungductung 0:8ede47d38d10 26 // put this object at head of the list
phungductung 0:8ede47d38d10 27 _next = _head;
phungductung 0:8ede47d38d10 28 _head = this;
phungductung 0:8ede47d38d10 29 } else {
phungductung 0:8ede47d38d10 30 _next = NULL;
phungductung 0:8ede47d38d10 31 }
phungductung 0:8ede47d38d10 32 }
phungductung 0:8ede47d38d10 33
phungductung 0:8ede47d38d10 34 FileBase::~FileBase() {
phungductung 0:8ede47d38d10 35 if (_name != NULL) {
phungductung 0:8ede47d38d10 36 // remove this object from the list
phungductung 0:8ede47d38d10 37 if (_head == this) { // first in the list, so just drop me
phungductung 0:8ede47d38d10 38 _head = _next;
phungductung 0:8ede47d38d10 39 } else { // find the object before me, then drop me
phungductung 0:8ede47d38d10 40 FileBase *p = _head;
phungductung 0:8ede47d38d10 41 while (p->_next != this) {
phungductung 0:8ede47d38d10 42 p = p->_next;
phungductung 0:8ede47d38d10 43 }
phungductung 0:8ede47d38d10 44 p->_next = _next;
phungductung 0:8ede47d38d10 45 }
phungductung 0:8ede47d38d10 46 }
phungductung 0:8ede47d38d10 47 }
phungductung 0:8ede47d38d10 48
phungductung 0:8ede47d38d10 49 FileBase *FileBase::lookup(const char *name, unsigned int len) {
phungductung 0:8ede47d38d10 50 FileBase *p = _head;
phungductung 0:8ede47d38d10 51 while (p != NULL) {
phungductung 0:8ede47d38d10 52 /* Check that p->_name matches name and is the correct length */
phungductung 0:8ede47d38d10 53 if (p->_name != NULL && std::strncmp(p->_name, name, len) == 0 && std::strlen(p->_name) == len) {
phungductung 0:8ede47d38d10 54 return p;
phungductung 0:8ede47d38d10 55 }
phungductung 0:8ede47d38d10 56 p = p->_next;
phungductung 0:8ede47d38d10 57 }
phungductung 0:8ede47d38d10 58 return NULL;
phungductung 0:8ede47d38d10 59 }
phungductung 0:8ede47d38d10 60
phungductung 0:8ede47d38d10 61 FileBase *FileBase::get(int n) {
phungductung 0:8ede47d38d10 62 FileBase *p = _head;
phungductung 0:8ede47d38d10 63 int m = 0;
phungductung 0:8ede47d38d10 64 while (p != NULL) {
phungductung 0:8ede47d38d10 65 if (m == n) return p;
phungductung 0:8ede47d38d10 66
phungductung 0:8ede47d38d10 67 m++;
phungductung 0:8ede47d38d10 68 p = p->_next;
phungductung 0:8ede47d38d10 69 }
phungductung 0:8ede47d38d10 70 return NULL;
phungductung 0:8ede47d38d10 71 }
phungductung 0:8ede47d38d10 72
phungductung 0:8ede47d38d10 73 const char* FileBase::getName(void) {
phungductung 0:8ede47d38d10 74 return _name;
phungductung 0:8ede47d38d10 75 }
phungductung 0:8ede47d38d10 76
phungductung 0:8ede47d38d10 77 PathType FileBase::getPathType(void) {
phungductung 0:8ede47d38d10 78 return _path_type;
phungductung 0:8ede47d38d10 79 }
phungductung 0:8ede47d38d10 80
phungductung 0:8ede47d38d10 81 } // namespace mbed
phungductung 0:8ede47d38d10 82