tmk_core/tool/mbed/mbed-sdk/libraries/mbed/common/FileBase.cpp

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