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Last commit 20 Feb 2019 by 
mbed official
common/FileSystemLike.cpp@10:3bc89ef62ce7, 2013-06-14 (annotated)
- Committer:
- emilmont
- Date:
- Fri Jun 14 17:49:17 2013 +0100
- Revision:
- 10:3bc89ef62ce7
- Parent:
- 9:0ce32e54c9a7
- Child:
- 13:0645d8841f51
Unify mbed library sources
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| emilmont | 10:3bc89ef62ce7 | 1 | /* mbed Microcontroller Library |
| emilmont | 10:3bc89ef62ce7 | 2 | * Copyright (c) 2006-2013 ARM Limited |
| emilmont | 10:3bc89ef62ce7 | 3 | * |
| emilmont | 10:3bc89ef62ce7 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| emilmont | 10:3bc89ef62ce7 | 5 | * you may not use this file except in compliance with the License. |
| emilmont | 10:3bc89ef62ce7 | 6 | * You may obtain a copy of the License at |
| emilmont | 10:3bc89ef62ce7 | 7 | * |
| emilmont | 10:3bc89ef62ce7 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| emilmont | 10:3bc89ef62ce7 | 9 | * |
| emilmont | 10:3bc89ef62ce7 | 10 | * Unless required by applicable law or agreed to in writing, software |
| emilmont | 10:3bc89ef62ce7 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| emilmont | 10:3bc89ef62ce7 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| emilmont | 10:3bc89ef62ce7 | 13 | * See the License for the specific language governing permissions and |
| emilmont | 10:3bc89ef62ce7 | 14 | * limitations under the License. |
| emilmont | 10:3bc89ef62ce7 | 15 | */ |
| emilmont | 10:3bc89ef62ce7 | 16 | #include "FileSystemLike.h" |
| emilmont | 10:3bc89ef62ce7 | 17 | |
| emilmont | 10:3bc89ef62ce7 | 18 | namespace mbed { |
| emilmont | 10:3bc89ef62ce7 | 19 | |
| emilmont | 10:3bc89ef62ce7 | 20 | class BaseDirHandle : public DirHandle { |
| emilmont | 10:3bc89ef62ce7 | 21 | public: |
| emilmont | 10:3bc89ef62ce7 | 22 | /* |
| emilmont | 10:3bc89ef62ce7 | 23 | We keep track of our current location as the n'th object in the |
| emilmont | 10:3bc89ef62ce7 | 24 | FileSystemLike list. Using a Base* instead would cause problems if that |
| emilmont | 10:3bc89ef62ce7 | 25 | object were to be destroyed between readdirs. |
| emilmont | 10:3bc89ef62ce7 | 26 | Using this method does mean though that destroying/creating objects can |
| emilmont | 10:3bc89ef62ce7 | 27 | give unusual results from readdir. |
| emilmont | 10:3bc89ef62ce7 | 28 | */ |
| emilmont | 10:3bc89ef62ce7 | 29 | off_t n; |
| emilmont | 10:3bc89ef62ce7 | 30 | struct dirent cur_entry; |
| emilmont | 10:3bc89ef62ce7 | 31 | |
| emilmont | 10:3bc89ef62ce7 | 32 | BaseDirHandle() { |
| emilmont | 10:3bc89ef62ce7 | 33 | n = 0; |
| emilmont | 10:3bc89ef62ce7 | 34 | } |
| emilmont | 10:3bc89ef62ce7 | 35 | |
| emilmont | 10:3bc89ef62ce7 | 36 | virtual int closedir() { |
| emilmont | 10:3bc89ef62ce7 | 37 | delete this; |
| emilmont | 10:3bc89ef62ce7 | 38 | return 0; |
| emilmont | 10:3bc89ef62ce7 | 39 | } |
| emilmont | 10:3bc89ef62ce7 | 40 | |
| emilmont | 10:3bc89ef62ce7 | 41 | virtual struct dirent *readdir() { |
| emilmont | 10:3bc89ef62ce7 | 42 | FileBase *ptr = FileBase::get(n); |
| emilmont | 10:3bc89ef62ce7 | 43 | if (ptr == NULL) return NULL; |
| emilmont | 10:3bc89ef62ce7 | 44 | |
| emilmont | 10:3bc89ef62ce7 | 45 | /* Increment n, so next readdir gets the next item */ |
| emilmont | 10:3bc89ef62ce7 | 46 | n++; |
| emilmont | 10:3bc89ef62ce7 | 47 | |
| emilmont | 10:3bc89ef62ce7 | 48 | /* Setup cur entry and return a pointer to it */ |
| emilmont | 10:3bc89ef62ce7 | 49 | std::strncpy(cur_entry.d_name, ptr->getName(), NAME_MAX); |
| emilmont | 10:3bc89ef62ce7 | 50 | return &cur_entry; |
| emilmont | 10:3bc89ef62ce7 | 51 | } |
| emilmont | 10:3bc89ef62ce7 | 52 | |
| emilmont | 10:3bc89ef62ce7 | 53 | virtual off_t telldir() { |
| emilmont | 10:3bc89ef62ce7 | 54 | return n; |
| emilmont | 10:3bc89ef62ce7 | 55 | } |
| emilmont | 10:3bc89ef62ce7 | 56 | |
| emilmont | 10:3bc89ef62ce7 | 57 | virtual void seekdir(off_t offset) { |
| emilmont | 10:3bc89ef62ce7 | 58 | n = offset; |
| emilmont | 10:3bc89ef62ce7 | 59 | } |
| emilmont | 10:3bc89ef62ce7 | 60 | |
| emilmont | 10:3bc89ef62ce7 | 61 | virtual void rewinddir() { |
| emilmont | 10:3bc89ef62ce7 | 62 | n = 0; |
| emilmont | 10:3bc89ef62ce7 | 63 | } |
| emilmont | 10:3bc89ef62ce7 | 64 | }; |
| emilmont | 10:3bc89ef62ce7 | 65 | |
| emilmont | 10:3bc89ef62ce7 | 66 | FileSystemLike::FileSystemLike(const char *name) : FileBase(name, FileSystemPathType) { |
| emilmont | 10:3bc89ef62ce7 | 67 | |
| emilmont | 10:3bc89ef62ce7 | 68 | } |
| emilmont | 10:3bc89ef62ce7 | 69 | |
| emilmont | 10:3bc89ef62ce7 | 70 | FileSystemLike::~FileSystemLike() { |
| emilmont | 10:3bc89ef62ce7 | 71 | |
| emilmont | 10:3bc89ef62ce7 | 72 | } |
| emilmont | 10:3bc89ef62ce7 | 73 | |
| emilmont | 10:3bc89ef62ce7 | 74 | DirHandle *FileSystemLike::opendir() { |
| emilmont | 10:3bc89ef62ce7 | 75 | return new BaseDirHandle(); |
| emilmont | 10:3bc89ef62ce7 | 76 | } |
| emilmont | 10:3bc89ef62ce7 | 77 | |
| emilmont | 10:3bc89ef62ce7 | 78 | } // namespace mbed |
