Lee Kai Xuan / mbed-os

mbed-os

Fork of mbed-os by erkin yucel

drivers/FilePath.cpp@0:f269e3021894, 2016-10-23 (annotated)

Committer:
elessair
Date:
Sun Oct 23 15:10:02 2016 +0000
Revision:
0:f269e3021894
Initial commit

Who changed what in which revision?

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elessair 0:f269e3021894 1 /* mbed Microcontroller Library
elessair 0:f269e3021894 2 * Copyright (c) 2006-2013 ARM Limited
elessair 0:f269e3021894 3 *
elessair 0:f269e3021894 4 * Licensed under the Apache License, Version 2.0 (the "License");
elessair 0:f269e3021894 5 * you may not use this file except in compliance with the License.
elessair 0:f269e3021894 6 * You may obtain a copy of the License at
elessair 0:f269e3021894 7 *
elessair 0:f269e3021894 8 * http://www.apache.org/licenses/LICENSE-2.0
elessair 0:f269e3021894 9 *
elessair 0:f269e3021894 10 * Unless required by applicable law or agreed to in writing, software
elessair 0:f269e3021894 11 * distributed under the License is distributed on an "AS IS" BASIS,
elessair 0:f269e3021894 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elessair 0:f269e3021894 13 * See the License for the specific language governing permissions and
elessair 0:f269e3021894 14 * limitations under the License.
elessair 0:f269e3021894 15 */
elessair 0:f269e3021894 16 #include "drivers/FilePath.h"
elessair 0:f269e3021894 17
elessair 0:f269e3021894 18 namespace mbed {
elessair 0:f269e3021894 19
elessair 0:f269e3021894 20 FilePath::FilePath(const char* file_path) : file_name(NULL), fb(NULL) {
elessair 0:f269e3021894 21 if ((file_path[0] != '/') || (file_path[1] == 0)) return;
elessair 0:f269e3021894 22
elessair 0:f269e3021894 23 const char* file_system = &file_path[1];
elessair 0:f269e3021894 24 file_name = file_system;
elessair 0:f269e3021894 25 int len = 0;
elessair 0:f269e3021894 26 while (true) {
elessair 0:f269e3021894 27 char c = *file_name;
elessair 0:f269e3021894 28 if (c == '/') { // end of object name
elessair 0:f269e3021894 29 file_name++; // point to one char after the '/'
elessair 0:f269e3021894 30 break;
elessair 0:f269e3021894 31 }
elessair 0:f269e3021894 32 if (c == 0) { // end of object name, with no filename
elessair 0:f269e3021894 33 break;
elessair 0:f269e3021894 34 }
elessair 0:f269e3021894 35 len++;
elessair 0:f269e3021894 36 file_name++;
elessair 0:f269e3021894 37 }
elessair 0:f269e3021894 38
elessair 0:f269e3021894 39 fb = FileBase::lookup(file_system, len);
elessair 0:f269e3021894 40 }
elessair 0:f269e3021894 41
elessair 0:f269e3021894 42 const char* FilePath::fileName(void) {
elessair 0:f269e3021894 43 return file_name;
elessair 0:f269e3021894 44 }
elessair 0:f269e3021894 45
elessair 0:f269e3021894 46 bool FilePath::isFileSystem(void) {
elessair 0:f269e3021894 47 if (NULL == fb)
elessair 0:f269e3021894 48 return false;
elessair 0:f269e3021894 49 return (fb->getPathType() == FileSystemPathType);
elessair 0:f269e3021894 50 }
elessair 0:f269e3021894 51
elessair 0:f269e3021894 52 FileSystemLike* FilePath::fileSystem(void) {
elessair 0:f269e3021894 53 if (isFileSystem()) {
elessair 0:f269e3021894 54 return (FileSystemLike*)fb;
elessair 0:f269e3021894 55 }
elessair 0:f269e3021894 56 return NULL;
elessair 0:f269e3021894 57 }
elessair 0:f269e3021894 58
elessair 0:f269e3021894 59 bool FilePath::isFile(void) {
elessair 0:f269e3021894 60 if (NULL == fb)
elessair 0:f269e3021894 61 return false;
elessair 0:f269e3021894 62 return (fb->getPathType() == FilePathType);
elessair 0:f269e3021894 63 }
elessair 0:f269e3021894 64
elessair 0:f269e3021894 65 FileLike* FilePath::file(void) {
elessair 0:f269e3021894 66 if (isFile()) {
elessair 0:f269e3021894 67 return (FileLike*)fb;
elessair 0:f269e3021894 68 }
elessair 0:f269e3021894 69 return NULL;
elessair 0:f269e3021894 70 }
elessair 0:f269e3021894 71
elessair 0:f269e3021894 72 bool FilePath::exists(void) {
elessair 0:f269e3021894 73 return fb != NULL;
elessair 0:f269e3021894 74 }
elessair 0:f269e3021894 75
elessair 0:f269e3021894 76 } // namespace mbed