[11U68]fix P0_11 to use GPIO
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DirHandle.h
00001 /* mbed Microcontroller Library 00002 * Copyright (c) 2006-2013 ARM Limited 00003 * 00004 * Licensed under the Apache License, Version 2.0 (the "License"); 00005 * you may not use this file except in compliance with the License. 00006 * You may obtain a copy of the License at 00007 * 00008 * http://www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an "AS IS" BASIS, 00012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 #ifndef MBED_DIRHANDLE_H 00017 #define MBED_DIRHANDLE_H 00018 00019 #if defined(__ARMCC_VERSION) || defined(__ICCARM__) 00020 # define NAME_MAX 255 00021 typedef int mode_t; 00022 00023 #else 00024 # include <sys/syslimits.h> 00025 #endif 00026 00027 #include "FileHandle.h" 00028 00029 struct dirent { 00030 char d_name[NAME_MAX+1]; 00031 }; 00032 00033 namespace mbed { 00034 00035 /** Represents a directory stream. Objects of this type are returned 00036 * by a FileSystemLike's opendir method. Implementations must define 00037 * at least closedir, readdir and rewinddir. 00038 * 00039 * If a FileSystemLike class defines the opendir method, then the 00040 * directories of an object of that type can be accessed by 00041 * DIR *d = opendir("/example/directory") (or opendir("/example") 00042 * to open the root of the filesystem), and then using readdir(d) etc. 00043 * 00044 * The root directory is considered to contain all FileLike and 00045 * FileSystemLike objects, so the DIR* returned by opendir("/") will 00046 * reflect this. 00047 */ 00048 class DirHandle { 00049 00050 public: 00051 /** Closes the directory. 00052 * 00053 * @returns 00054 * 0 on success, 00055 * -1 on error. 00056 */ 00057 virtual int closedir()=0; 00058 00059 /** Return the directory entry at the current position, and 00060 * advances the position to the next entry. 00061 * 00062 * @returns 00063 * A pointer to a dirent structure representing the 00064 * directory entry at the current position, or NULL on reaching 00065 * end of directory or error. 00066 */ 00067 virtual struct dirent *readdir()=0; 00068 00069 /** Resets the position to the beginning of the directory. 00070 */ 00071 virtual void rewinddir()=0; 00072 00073 /** Returns the current position of the DirHandle. 00074 * 00075 * @returns 00076 * the current position, 00077 * -1 on error. 00078 */ 00079 virtual off_t telldir() { return -1; } 00080 00081 /** Sets the position of the DirHandle. 00082 * 00083 * @param location The location to seek to. Must be a value returned by telldir. 00084 */ 00085 virtual void seekdir(off_t location) { } 00086 00087 virtual ~DirHandle() {} 00088 }; 00089 00090 } // namespace mbed 00091 00092 typedef mbed::DirHandle DIR; 00093 00094 extern "C" { 00095 DIR *opendir(const char*); 00096 struct dirent *readdir(DIR *); 00097 int closedir(DIR*); 00098 void rewinddir(DIR*); 00099 long telldir(DIR*); 00100 void seekdir(DIR*, long); 00101 int mkdir(const char *name, mode_t n); 00102 }; 00103 00104 #endif /* MBED_DIRHANDLE_H */
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