//----------------------------------------------------------------------------- // _open_directory: Cycle through path string to find the start cluster // address of the highest subdir. //----------------------------------------------------------------------------- static int _open_directory(char *path, unsigned long *pathCluster) { int levels; int sublevel; char currentfolder[FATFS_MAX_LONG_FILENAME]; struct fat_dir_entry sfEntry; unsigned long startcluster; // Set starting cluster to root cluster startcluster = fatfs_get_root_cluster(&_fs); // Find number of levels levels = fatfs_total_path_levels(path); // Cycle through each level and get the start sector for (sublevel=0;sublevel<(levels+1);sublevel++) { if (fatfs_get_substring(path, sublevel, currentfolder, sizeof(currentfolder)) == -1) return 0; // Find clusteraddress for folder (currentfolder) if (fatfs_get_file_entry(&_fs, startcluster, currentfolder,&sfEntry)) { // Check entry is folder if (fatfs_entry_is_dir(&sfEntry)) startcluster = (((unsigned long)sfEntry.FstClusHI)<<16) + sfEntry.FstClusLO; else return 0; } else return 0; } *pathCluster = startcluster; return 1; }
int fatfs_list_directory_next(struct fatfs *fs, struct fs_dir_list_status *dirls, struct fs_dir_ent *entry) { uint8 i,item; uint16 recordoffset; struct fat_dir_entry *directoryEntry; char *long_filename = NULL; char short_filename[13]; struct lfn_cache lfn; int dotRequired = 0; int result = 0; // Initialise LFN cache first fatfs_lfn_cache_init(&lfn, 0); while (1) { // If data read OK if (fatfs_sector_reader(fs, dirls->cluster, dirls->sector, 0)) { // Maximum of 16 directory entries for (item = dirls->offset; item < FAT_DIR_ENTRIES_PER_SECTOR; item++) { // Increase directory offset recordoffset = FAT_DIR_ENTRY_SIZE * item; // Overlay directory entry over buffer directoryEntry = (struct fat_dir_entry*)(fs->currentsector.sector+recordoffset); #if FATFS_INC_LFN_SUPPORT // Long File Name Text Found if ( fatfs_entry_lfn_text(directoryEntry) ) fatfs_lfn_cache_entry(&lfn, fs->currentsector.sector+recordoffset); // If Invalid record found delete any long file name information collated else if ( fatfs_entry_lfn_invalid(directoryEntry) ) fatfs_lfn_cache_init(&lfn, 0); // Normal SFN Entry and Long text exists else if (fatfs_entry_lfn_exists(&lfn, directoryEntry) ) { // Get text long_filename = fatfs_lfn_cache_get(&lfn); strncpy(entry->filename, long_filename, FATFS_MAX_LONG_FILENAME-1); if (fatfs_entry_is_dir(directoryEntry)) entry->is_dir = 1; else entry->is_dir = 0; #if FATFS_INC_TIME_DATE_SUPPORT // Get time / dates entry->create_time = ((uint16)directoryEntry->CrtTime[1] << 8) | directoryEntry->CrtTime[0]; entry->create_date = ((uint16)directoryEntry->CrtDate[1] << 8) | directoryEntry->CrtDate[0]; entry->access_date = ((uint16)directoryEntry->LstAccDate[1] << 8) | directoryEntry->LstAccDate[0]; entry->write_time = ((uint16)directoryEntry->WrtTime[1] << 8) | directoryEntry->WrtTime[0]; entry->write_date = ((uint16)directoryEntry->WrtDate[1] << 8) | directoryEntry->WrtDate[0]; #endif entry->size = FAT_HTONL(directoryEntry->FileSize); entry->cluster = (FAT_HTONS(directoryEntry->FstClusHI)<<16) | FAT_HTONS(directoryEntry->FstClusLO); // Next starting position dirls->offset = item + 1; result = 1; return 1; } // Normal Entry, only 8.3 Text else #endif if ( fatfs_entry_sfn_only(directoryEntry) ) { fatfs_lfn_cache_init(&lfn, 0); memset(short_filename, 0, sizeof(short_filename)); // Copy name to string for (i=0; i<8; i++) short_filename[i] = directoryEntry->Name[i]; // Extension dotRequired = 0; for (i=8; i<11; i++) { short_filename[i+1] = directoryEntry->Name[i]; if (directoryEntry->Name[i] != ' ') dotRequired = 1; } // Dot only required if extension present if (dotRequired) { // If not . or .. entry if (short_filename[0]!='.') short_filename[8] = '.'; else short_filename[8] = ' '; } else short_filename[8] = ' '; fatfs_get_sfn_display_name(entry->filename, short_filename); if (fatfs_entry_is_dir(directoryEntry)) entry->is_dir = 1; else entry->is_dir = 0; #if FATFS_INC_TIME_DATE_SUPPORT // Get time / dates entry->create_time = ((uint16)directoryEntry->CrtTime[1] << 8) | directoryEntry->CrtTime[0]; entry->create_date = ((uint16)directoryEntry->CrtDate[1] << 8) | directoryEntry->CrtDate[0]; entry->access_date = ((uint16)directoryEntry->LstAccDate[1] << 8) | directoryEntry->LstAccDate[0]; entry->write_time = ((uint16)directoryEntry->WrtTime[1] << 8) | directoryEntry->WrtTime[0]; entry->write_date = ((uint16)directoryEntry->WrtDate[1] << 8) | directoryEntry->WrtDate[0]; #endif entry->size = FAT_HTONL(directoryEntry->FileSize); entry->cluster = (FAT_HTONS(directoryEntry->FstClusHI)<<16) | FAT_HTONS(directoryEntry->FstClusLO); // Next starting position dirls->offset = item + 1; result = 1; return 1; } }// end of for // If reached end of the dir move onto next sector dirls->sector++; dirls->offset = 0; } else break; } return result; }