FilePath.cpp

00001 /* mbed Microcontroller Library
00002  * Copyright (c) 2006-2013 ARM Limited
00003  * SPDX-License-Identifier: Apache-2.0
00004  *
00005  * Licensed under the Apache License, Version 2.0 (the "License");
00006  * you may not use this file except in compliance with the License.
00007  * You may obtain a copy of the License at
00008  *
00009  *     http://www.apache.org/licenses/LICENSE-2.0
00010  *
00011  * Unless required by applicable law or agreed to in writing, software
00012  * distributed under the License is distributed on an "AS IS" BASIS,
00013  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00014  * See the License for the specific language governing permissions and
00015  * limitations under the License.
00016  */
00017 #include "platform/FilePath.h"
00018 
00019 namespace mbed {
00020 
00021 FilePath::FilePath(const char *file_path) : file_name(NULL), fb(NULL)
00022 {
00023     // skip slashes
00024     file_path += strspn(file_path, "/");
00025 
00026     const char *file_system = file_path;
00027     file_name = file_system;
00028     int len = 0;
00029     while (true) {
00030         char c = *file_name;
00031         if (c == '/') { // end of object name
00032             file_name++; // point to one char after the '/'
00033             break;
00034         }
00035         if (c == 0) { // end of object name, with no filename
00036             break;
00037         }
00038         len++;
00039         file_name++;
00040     }
00041 
00042     MBED_ASSERT(len != 0);
00043     fb = FileBase::lookup(file_system, len);
00044 }
00045 
00046 const char *FilePath::fileName(void)
00047 {
00048     return file_name;
00049 }
00050 
00051 bool FilePath::isFileSystem(void)
00052 {
00053     if (NULL == fb) {
00054         return false;
00055     }
00056     return (fb->getPathType() == FileSystemPathType);
00057 }
00058 
00059 FileSystemLike *FilePath::fileSystem(void)
00060 {
00061     if (isFileSystem()) {
00062         return static_cast<FileSystemLike *>(fb);
00063     }
00064     return NULL;
00065 }
00066 
00067 bool FilePath::isFile(void)
00068 {
00069     if (NULL == fb) {
00070         return false;
00071     }
00072     return (fb->getPathType() == FilePathType);
00073 }
00074 
00075 FileLike *FilePath::file(void)
00076 {
00077     if (isFile()) {
00078         return (FileLike *)fb;
00079     }
00080     return NULL;
00081 }
00082 
00083 bool FilePath::exists(void)
00084 {
00085     return fb != NULL;
00086 }
00087 
00088 } // namespace mbed