Vergil Cola / SDFileSystem2

A fork of the original SDFileSystem, added only stat() for getting file information.

Dependents:   FRDM_K64F_IOT

Added code to the original SDFileSystem to export the stat() command. It would now be possible to get the FILEINFO struct of a directory entry to get information such as file size, etc.

SDFileSystem2 usage

#include "SDFileSystem.h"
SDFileSystem sd(p5,p6,p7,p8,"sd"); // mosi, miso, sck, cs 

static void cmd_ls(Stream * chp, int argc, char * argv[])
{
   DIR * dp;
   struct dirent * dirp;
   FILINFO fileInfo;
   char dirroot[256];
   
   if (argc >= 1)
       sprintf(dirroot, "/sd/%s", argv[0]);
   else
       sprintf(dirroot, "/sd");
   
   chp->printf("Listing directory [%s]\r\n", dirroot);
   
   dp = opendir(dirroot);			
   while((dirp = readdir(dp)) != NULL)
   {
       if (sd.stat(dirp->d_name, &fileInfo) == 0)
       {
           if (fileInfo.fattrib & AM_DIR )
                   chp->printf("<DIR>\t\t");
           else
                   chp->printf("%ld\t\t", fileInfo.fsize);
       }
       chp->printf("%s\r\n", dirp->d_name);
   }
   closedir(dp);
}

FATFileSystem/FATDirHandle.cpp@0:572d27f56fcd, 2015-04-28 (annotated)

Committer:
vpcola
Date:
Tue Apr 28 16:55:30 2015 +0000
Revision:
0:572d27f56fcd
Added stat() to get file information

Who changed what in which revision?

UserRevisionLine numberNew contents of line
vpcola 0:572d27f56fcd 1 /* mbed Microcontroller Library
vpcola 0:572d27f56fcd 2 * Copyright (c) 2006-2012 ARM Limited
vpcola 0:572d27f56fcd 3 *
vpcola 0:572d27f56fcd 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
vpcola 0:572d27f56fcd 5 * of this software and associated documentation files (the "Software"), to deal
vpcola 0:572d27f56fcd 6 * in the Software without restriction, including without limitation the rights
vpcola 0:572d27f56fcd 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
vpcola 0:572d27f56fcd 8 * copies of the Software, and to permit persons to whom the Software is
vpcola 0:572d27f56fcd 9 * furnished to do so, subject to the following conditions:
vpcola 0:572d27f56fcd 10 *
vpcola 0:572d27f56fcd 11 * The above copyright notice and this permission notice shall be included in
vpcola 0:572d27f56fcd 12 * all copies or substantial portions of the Software.
vpcola 0:572d27f56fcd 13 *
vpcola 0:572d27f56fcd 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
vpcola 0:572d27f56fcd 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
vpcola 0:572d27f56fcd 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
vpcola 0:572d27f56fcd 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
vpcola 0:572d27f56fcd 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
vpcola 0:572d27f56fcd 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
vpcola 0:572d27f56fcd 20 * SOFTWARE.
vpcola 0:572d27f56fcd 21 */
vpcola 0:572d27f56fcd 22 #include <string.h>
vpcola 0:572d27f56fcd 23 #include "ff.h"
vpcola 0:572d27f56fcd 24 #include "FATDirHandle.h"
vpcola 0:572d27f56fcd 25
vpcola 0:572d27f56fcd 26 using namespace mbed;
vpcola 0:572d27f56fcd 27
vpcola 0:572d27f56fcd 28 FATDirHandle::FATDirHandle(const FATFS_DIR &the_dir) {
vpcola 0:572d27f56fcd 29 dir = the_dir;
vpcola 0:572d27f56fcd 30 }
vpcola 0:572d27f56fcd 31
vpcola 0:572d27f56fcd 32 int FATDirHandle::closedir() {
vpcola 0:572d27f56fcd 33 delete this;
vpcola 0:572d27f56fcd 34 return 0;
vpcola 0:572d27f56fcd 35 }
vpcola 0:572d27f56fcd 36
vpcola 0:572d27f56fcd 37 struct dirent *FATDirHandle::readdir() {
vpcola 0:572d27f56fcd 38 FILINFO finfo;
vpcola 0:572d27f56fcd 39
vpcola 0:572d27f56fcd 40 #if _USE_LFN
vpcola 0:572d27f56fcd 41 finfo.lfname = cur_entry.d_name;
vpcola 0:572d27f56fcd 42 finfo.lfsize = sizeof(cur_entry.d_name);
vpcola 0:572d27f56fcd 43 #endif // _USE_LFN
vpcola 0:572d27f56fcd 44
vpcola 0:572d27f56fcd 45 FRESULT res = f_readdir(&dir, &finfo);
vpcola 0:572d27f56fcd 46
vpcola 0:572d27f56fcd 47 #if _USE_LFN
vpcola 0:572d27f56fcd 48 if(res != 0 || finfo.fname[0]==0) {
vpcola 0:572d27f56fcd 49 return NULL;
vpcola 0:572d27f56fcd 50 } else {
vpcola 0:572d27f56fcd 51 if(cur_entry.d_name[0]==0) {
vpcola 0:572d27f56fcd 52 // No long filename so use short filename.
vpcola 0:572d27f56fcd 53 memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
vpcola 0:572d27f56fcd 54 }
vpcola 0:572d27f56fcd 55 return &cur_entry;
vpcola 0:572d27f56fcd 56 }
vpcola 0:572d27f56fcd 57 #else
vpcola 0:572d27f56fcd 58 if(res != 0 || finfo.fname[0]==0) {
vpcola 0:572d27f56fcd 59 return NULL;
vpcola 0:572d27f56fcd 60 } else {
vpcola 0:572d27f56fcd 61 memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
vpcola 0:572d27f56fcd 62 return &cur_entry;
vpcola 0:572d27f56fcd 63 }
vpcola 0:572d27f56fcd 64 #endif /* _USE_LFN */
vpcola 0:572d27f56fcd 65 }
vpcola 0:572d27f56fcd 66
vpcola 0:572d27f56fcd 67 void FATDirHandle::rewinddir() {
vpcola 0:572d27f56fcd 68 dir.index = 0;
vpcola 0:572d27f56fcd 69 }
vpcola 0:572d27f56fcd 70
vpcola 0:572d27f56fcd 71 off_t FATDirHandle::telldir() {
vpcola 0:572d27f56fcd 72 return dir.index;
vpcola 0:572d27f56fcd 73 }
vpcola 0:572d27f56fcd 74
vpcola 0:572d27f56fcd 75 void FATDirHandle::seekdir(off_t location) {
vpcola 0:572d27f56fcd 76 dir.index = location;
vpcola 0:572d27f56fcd 77 }
vpcola 0:572d27f56fcd 78