Jan Wolfsberger / mbed-src-no-hal

mbed library sources that still uses the stm standard peripheral library

Fork of mbed-src by Reinhold Schaefer

api/DirHandle.h@306:46fbf889ec9e, 2015-01-03 (annotated)

Committer:
rs27
Date:
Sat Jan 03 15:26:50 2015 +0000
Revision:
306:46fbf889ec9e
Parent:
13:0645d8841f51 
123;

Who changed what in which revision?

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bogdanm 13:0645d8841f51 1 /* mbed Microcontroller Library
bogdanm 13:0645d8841f51 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 13:0645d8841f51 3 *
bogdanm 13:0645d8841f51 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 13:0645d8841f51 5 * you may not use this file except in compliance with the License.
bogdanm 13:0645d8841f51 6 * You may obtain a copy of the License at
bogdanm 13:0645d8841f51 7 *
bogdanm 13:0645d8841f51 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 13:0645d8841f51 9 *
bogdanm 13:0645d8841f51 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 13:0645d8841f51 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 13:0645d8841f51 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 13:0645d8841f51 13 * See the License for the specific language governing permissions and
bogdanm 13:0645d8841f51 14 * limitations under the License.
bogdanm 13:0645d8841f51 15 */
bogdanm 13:0645d8841f51 16 #ifndef MBED_DIRHANDLE_H
bogdanm 13:0645d8841f51 17 #define MBED_DIRHANDLE_H
bogdanm 13:0645d8841f51 18
bogdanm 13:0645d8841f51 19 #if defined(__ARMCC_VERSION) || defined(__ICCARM__)
bogdanm 13:0645d8841f51 20 # define NAME_MAX 255
bogdanm 13:0645d8841f51 21 typedef int mode_t;
bogdanm 13:0645d8841f51 22
bogdanm 13:0645d8841f51 23 #else
bogdanm 13:0645d8841f51 24 # include <sys/syslimits.h>
bogdanm 13:0645d8841f51 25 #endif
bogdanm 13:0645d8841f51 26
bogdanm 13:0645d8841f51 27 #include "FileHandle.h"
bogdanm 13:0645d8841f51 28
bogdanm 13:0645d8841f51 29 struct dirent {
bogdanm 13:0645d8841f51 30 char d_name[NAME_MAX+1];
rs27 306:46fbf889ec9e 31 unsigned long ftime, fdate;
bogdanm 13:0645d8841f51 32 };
bogdanm 13:0645d8841f51 33
bogdanm 13:0645d8841f51 34 namespace mbed {
bogdanm 13:0645d8841f51 35
bogdanm 13:0645d8841f51 36 /** Represents a directory stream. Objects of this type are returned
bogdanm 13:0645d8841f51 37 * by a FileSystemLike's opendir method. Implementations must define
bogdanm 13:0645d8841f51 38 * at least closedir, readdir and rewinddir.
bogdanm 13:0645d8841f51 39 *
bogdanm 13:0645d8841f51 40 * If a FileSystemLike class defines the opendir method, then the
bogdanm 13:0645d8841f51 41 * directories of an object of that type can be accessed by
bogdanm 13:0645d8841f51 42 * DIR *d = opendir("/example/directory") (or opendir("/example")
bogdanm 13:0645d8841f51 43 * to open the root of the filesystem), and then using readdir(d) etc.
bogdanm 13:0645d8841f51 44 *
bogdanm 13:0645d8841f51 45 * The root directory is considered to contain all FileLike and
bogdanm 13:0645d8841f51 46 * FileSystemLike objects, so the DIR* returned by opendir("/") will
bogdanm 13:0645d8841f51 47 * reflect this.
bogdanm 13:0645d8841f51 48 */
bogdanm 13:0645d8841f51 49 class DirHandle {
bogdanm 13:0645d8841f51 50
bogdanm 13:0645d8841f51 51 public:
bogdanm 13:0645d8841f51 52 /** Closes the directory.
bogdanm 13:0645d8841f51 53 *
bogdanm 13:0645d8841f51 54 * @returns
bogdanm 13:0645d8841f51 55 * 0 on success,
bogdanm 13:0645d8841f51 56 * -1 on error.
bogdanm 13:0645d8841f51 57 */
bogdanm 13:0645d8841f51 58 virtual int closedir()=0;
bogdanm 13:0645d8841f51 59
bogdanm 13:0645d8841f51 60 /** Return the directory entry at the current position, and
bogdanm 13:0645d8841f51 61 * advances the position to the next entry.
bogdanm 13:0645d8841f51 62 *
bogdanm 13:0645d8841f51 63 * @returns
bogdanm 13:0645d8841f51 64 * A pointer to a dirent structure representing the
bogdanm 13:0645d8841f51 65 * directory entry at the current position, or NULL on reaching
bogdanm 13:0645d8841f51 66 * end of directory or error.
bogdanm 13:0645d8841f51 67 */
bogdanm 13:0645d8841f51 68 virtual struct dirent *readdir()=0;
bogdanm 13:0645d8841f51 69
bogdanm 13:0645d8841f51 70 /** Resets the position to the beginning of the directory.
bogdanm 13:0645d8841f51 71 */
bogdanm 13:0645d8841f51 72 virtual void rewinddir()=0;
bogdanm 13:0645d8841f51 73
bogdanm 13:0645d8841f51 74 /** Returns the current position of the DirHandle.
bogdanm 13:0645d8841f51 75 *
bogdanm 13:0645d8841f51 76 * @returns
bogdanm 13:0645d8841f51 77 * the current position,
bogdanm 13:0645d8841f51 78 * -1 on error.
bogdanm 13:0645d8841f51 79 */
bogdanm 13:0645d8841f51 80 virtual off_t telldir() { return -1; }
bogdanm 13:0645d8841f51 81
bogdanm 13:0645d8841f51 82 /** Sets the position of the DirHandle.
bogdanm 13:0645d8841f51 83 *
bogdanm 13:0645d8841f51 84 * @param location The location to seek to. Must be a value returned by telldir.
bogdanm 13:0645d8841f51 85 */
bogdanm 13:0645d8841f51 86 virtual void seekdir(off_t location) { }
bogdanm 13:0645d8841f51 87
bogdanm 13:0645d8841f51 88 virtual ~DirHandle() {}
bogdanm 13:0645d8841f51 89 };
bogdanm 13:0645d8841f51 90
bogdanm 13:0645d8841f51 91 } // namespace mbed
bogdanm 13:0645d8841f51 92
bogdanm 13:0645d8841f51 93 typedef mbed::DirHandle DIR;
bogdanm 13:0645d8841f51 94
bogdanm 13:0645d8841f51 95 extern "C" {
bogdanm 13:0645d8841f51 96 DIR *opendir(const char*);
bogdanm 13:0645d8841f51 97 struct dirent *readdir(DIR *);
bogdanm 13:0645d8841f51 98 int closedir(DIR*);
bogdanm 13:0645d8841f51 99 void rewinddir(DIR*);
bogdanm 13:0645d8841f51 100 long telldir(DIR*);
bogdanm 13:0645d8841f51 101 void seekdir(DIR*, long);
bogdanm 13:0645d8841f51 102 int mkdir(const char *name, mode_t n);
bogdanm 13:0645d8841f51 103 };
bogdanm 13:0645d8841f51 104
bogdanm 13:0645d8841f51 105 #endif /* MBED_DIRHANDLE_H */