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mbed/FileSystemLike.h@0:ad97421fb1fb, 2016-04-13 (annotated)

Committer:
antbig
Date:
Wed Apr 13 22:04:54 2016 +0000
Revision:
0:ad97421fb1fb
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antbig 0:ad97421fb1fb 1 /* mbed Microcontroller Library - FileSystemLike
antbig 0:ad97421fb1fb 2 * Copyright (c) 2008-2009 ARM Limited. All rights reserved.
antbig 0:ad97421fb1fb 3 */
antbig 0:ad97421fb1fb 4
antbig 0:ad97421fb1fb 5 #ifndef MBED_FILESYSTEMLIKE_H
antbig 0:ad97421fb1fb 6 #define MBED_FILESYSTEMLIKE_H
antbig 0:ad97421fb1fb 7
antbig 0:ad97421fb1fb 8 #ifdef __ARMCC_VERSION
antbig 0:ad97421fb1fb 9 # define O_RDONLY 0
antbig 0:ad97421fb1fb 10 # define O_WRONLY 1
antbig 0:ad97421fb1fb 11 # define O_RDWR 2
antbig 0:ad97421fb1fb 12 # define O_CREAT 0x0200
antbig 0:ad97421fb1fb 13 # define O_TRUNC 0x0400
antbig 0:ad97421fb1fb 14 # define O_APPEND 0x0008
antbig 0:ad97421fb1fb 15 typedef int mode_t;
antbig 0:ad97421fb1fb 16 #else
antbig 0:ad97421fb1fb 17 # include <sys/fcntl.h>
antbig 0:ad97421fb1fb 18 #endif
antbig 0:ad97421fb1fb 19 #include "Base.h"
antbig 0:ad97421fb1fb 20 #include "FileHandle.h"
antbig 0:ad97421fb1fb 21 #include "DirHandle.h"
antbig 0:ad97421fb1fb 22
antbig 0:ad97421fb1fb 23 namespace mbed {
antbig 0:ad97421fb1fb 24
antbig 0:ad97421fb1fb 25 /* Class FileSystemLike
antbig 0:ad97421fb1fb 26 * A filesystem-like object is one that can be used to open files
antbig 0:ad97421fb1fb 27 * though it by fopen("/name/filename", mode)
antbig 0:ad97421fb1fb 28 *
antbig 0:ad97421fb1fb 29 * Implementations must define at least open (the default definitions
antbig 0:ad97421fb1fb 30 * of the rest of the functions just return error values).
antbig 0:ad97421fb1fb 31 */
antbig 0:ad97421fb1fb 32 class FileSystemLike : public Base {
antbig 0:ad97421fb1fb 33
antbig 0:ad97421fb1fb 34 public:
antbig 0:ad97421fb1fb 35
antbig 0:ad97421fb1fb 36 /* Constructor FileSystemLike
antbig 0:ad97421fb1fb 37 *
antbig 0:ad97421fb1fb 38 * Variables
antbig 0:ad97421fb1fb 39 * name - The name to use for the filesystem.
antbig 0:ad97421fb1fb 40 */
antbig 0:ad97421fb1fb 41 FileSystemLike(const char *name) : Base(name) {}
antbig 0:ad97421fb1fb 42
antbig 0:ad97421fb1fb 43 /* Function open
antbig 0:ad97421fb1fb 44 *
antbig 0:ad97421fb1fb 45 * Variables
antbig 0:ad97421fb1fb 46 * filename - The name of the file to open.
antbig 0:ad97421fb1fb 47 * flags - One of O_RDONLY, O_WRONLY, or O_RDWR, OR'd with
antbig 0:ad97421fb1fb 48 * zero or more of O_CREAT, O_TRUNC, or O_APPEND.
antbig 0:ad97421fb1fb 49 * returns - A pointer to a FileHandle object representing the
antbig 0:ad97421fb1fb 50 * file on success, or NULL on failure.
antbig 0:ad97421fb1fb 51 */
antbig 0:ad97421fb1fb 52 virtual FileHandle *open(const char *filename, int flags) = 0;
antbig 0:ad97421fb1fb 53
antbig 0:ad97421fb1fb 54 /* Function remove
antbig 0:ad97421fb1fb 55 * Remove a file from the filesystem.
antbig 0:ad97421fb1fb 56 *
antbig 0:ad97421fb1fb 57 * Variables
antbig 0:ad97421fb1fb 58 * filename - the name of the file to remove.
antbig 0:ad97421fb1fb 59 * returns - 0 on success, -1 on failure.
antbig 0:ad97421fb1fb 60 */
antbig 0:ad97421fb1fb 61 virtual int remove(const char *filename) { return -1; };
antbig 0:ad97421fb1fb 62
antbig 0:ad97421fb1fb 63 /* Function rename
antbig 0:ad97421fb1fb 64 * Rename a file in the filesystem.
antbig 0:ad97421fb1fb 65 *
antbig 0:ad97421fb1fb 66 * Variables
antbig 0:ad97421fb1fb 67 * oldname - the name of the file to rename.
antbig 0:ad97421fb1fb 68 * newname - the name to rename it to.
antbig 0:ad97421fb1fb 69 * returns - 0 on success, -1 on failure.
antbig 0:ad97421fb1fb 70 */
antbig 0:ad97421fb1fb 71 virtual int rename(const char *oldname, const char *newname) { return -1; };
antbig 0:ad97421fb1fb 72
antbig 0:ad97421fb1fb 73 /* Function opendir
antbig 0:ad97421fb1fb 74 * Opens a directory in the filesystem and returns a DirHandle
antbig 0:ad97421fb1fb 75 * representing the directory stream.
antbig 0:ad97421fb1fb 76 *
antbig 0:ad97421fb1fb 77 * Variables
antbig 0:ad97421fb1fb 78 * name - The name of the directory to open.
antbig 0:ad97421fb1fb 79 * returns - A DirHandle representing the directory stream, or
antbig 0:ad97421fb1fb 80 * NULL on failure.
antbig 0:ad97421fb1fb 81 */
antbig 0:ad97421fb1fb 82 virtual DirHandle *opendir(const char *name) { return NULL; };
antbig 0:ad97421fb1fb 83
antbig 0:ad97421fb1fb 84 /* Function mkdir
antbig 0:ad97421fb1fb 85 * Creates a directory in the filesystem.
antbig 0:ad97421fb1fb 86 *
antbig 0:ad97421fb1fb 87 * Variables
antbig 0:ad97421fb1fb 88 * name - The name of the directory to create.
antbig 0:ad97421fb1fb 89 * mode - The permissions to create the directory with.
antbig 0:ad97421fb1fb 90 * returns - 0 on success, -1 on failure.
antbig 0:ad97421fb1fb 91 */
antbig 0:ad97421fb1fb 92 virtual int mkdir(const char *name, mode_t mode) { return -1; }
antbig 0:ad97421fb1fb 93
antbig 0:ad97421fb1fb 94 // TODO other filesystem functions (mkdir, rm, rn, ls etc)
antbig 0:ad97421fb1fb 95
antbig 0:ad97421fb1fb 96 };
antbig 0:ad97421fb1fb 97
antbig 0:ad97421fb1fb 98 } // namespace mbed
antbig 0:ad97421fb1fb 99
antbig 0:ad97421fb1fb 100 #endif