void fatfs_sfn_create_entry(char *shortfilename, uint32 size, uint32 startCluster, struct fat_dir_entry *entry, int dir)
{
int i;
// Copy short filename
for (i=0;i<FAT_SFN_SIZE_FULL;i++)
entry->Name[i] = shortfilename[i];
// Unless we have a RTC we might as well set these to 1980
entry->CrtTimeTenth = 0x00;
entry->CrtTime[1] = entry->CrtTime[0] = 0x00;
entry->CrtDate[1] = 0x00;
entry->CrtDate[0] = 0x20;
entry->LstAccDate[1] = 0x00;
entry->LstAccDate[0] = 0x20;
entry->WrtTime[1] = entry->WrtTime[0] = 0x00;
entry->WrtDate[1] = 0x00;
entry->WrtDate[0] = 0x20;
if (!dir)
entry->Attr = FILE_TYPE_FILE;
else
entry->Attr = FILE_TYPE_DIR;
entry->NTRes = 0x00;
entry->FstClusHI = FAT_HTONS((uint16)((startCluster>>16) & 0xFFFF));
entry->FstClusLO = FAT_HTONS((uint16)((startCluster>>0) & 0xFFFF));
entry->FileSize = FAT_HTONL(size);
}
int fatfs_update_file_length(struct fatfs *fs, uint32 Cluster, char *shortname, uint32 fileLength)
{
uint8 item=0;
uint16 recordoffset = 0;
int x=0;
struct fat_dir_entry *directoryEntry;
// No write access?
if (!fs->disk_io.write_media)
return 0;
// Main cluster following loop
while (1)
{
// Read sector
if (fatfs_sector_reader(fs, Cluster, x++, 0)) // If sector read was successfull
{
// Analyse Sector
for (item = 0; item < FAT_DIR_ENTRIES_PER_SECTOR; item++)
{
// Create the multiplier for sector access
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) )
;
// If Invalid record found delete any long file name information collated
else if (fatfs_entry_lfn_invalid(directoryEntry) )
;
// Normal Entry, only 8.3 Text
else
#endif
if (fatfs_entry_sfn_only(directoryEntry) )
{
if (strncmp((const char*)directoryEntry->Name, shortname, 11)==0)
{
directoryEntry->FileSize = FAT_HTONL(fileLength);
// TODO: Update last write time
// Update sfn entry
memcpy((uint8*)(fs->currentsector.sector+recordoffset), (uint8*)directoryEntry, sizeof(struct fat_dir_entry));
// Write sector back
return fs->disk_io.write_media(fs->currentsector.address, fs->currentsector.sector, 1);
}
}
} // End of if
}
else
break;
} // End of while loop
return 0;
}
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;
}
