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Code Issues Releases Wiki Activity

Added long filename support.

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daid 2012-08-22 14:49:57 +02:00
parent 87ff61a8a6
commit b69e75c89a
9 changed files with 117 additions and 27 deletions

40
Marlin/SdBaseFile.cpp
View file

@ -867,7 +867,7 @@ bool SdBaseFile::openParent(SdBaseFile* dir) {
}
// search for parent in '../..'
do {
if (file.readDir(&entry) != 32) goto fail;
if (file.readDir(&entry, NULL) != 32) goto fail;
c = entry.firstClusterLow;
c |= (uint32_t)entry.firstClusterHigh << 16;
} while (c != cluster);
@ -1108,10 +1108,16 @@ int16_t SdBaseFile::read(void* buf, uint16_t nbyte) {
* readDir() called before a directory has been opened, this is not
* a directory file or an I/O error occurred.
*/
int8_t SdBaseFile::readDir(dir_t* dir) {
int8_t SdBaseFile::readDir(dir_t* dir, char* longFilename) {
int16_t n;
// if not a directory file or miss-positioned return an error
if (!isDir() || (0X1F & curPosition_)) return -1;
//If we have a longFilename buffer, mark it as invalid. If we find a long filename it will be filled automaticly.
if (longFilename != NULL)
{
longFilename[0] = '\0';
}
while (1) {
n = read(dir, sizeof(dir_t));
@ -1120,6 +1126,34 @@ int8_t SdBaseFile::readDir(dir_t* dir) {
if (dir->name[0] == DIR_NAME_FREE) return 0;
// skip empty entries and entry for . and ..
if (dir->name[0] == DIR_NAME_DELETED || dir->name[0] == '.') continue;
//Fill the long filename if we have a long filename entry,
// long filename entries are stored before the actual filename.
if (DIR_IS_LONG_NAME(dir) && longFilename != NULL)
{
vfat_t *VFAT = (vfat_t*)dir;
//Sanity check the VFAT entry. The first cluster is always set to zero. And th esequence number should be higher then 0
if (VFAT->firstClusterLow == 0 && (VFAT->sequenceNumber & 0x1F) > 0 && (VFAT->sequenceNumber & 0x1F) <= MAX_VFAT_ENTRIES)
{
//TODO: Store the filename checksum to verify if a none-long filename aware system modified the file table.
n = ((VFAT->sequenceNumber & 0x1F) - 1) * 13;
longFilename[n+0] = VFAT->name1[0];
longFilename[n+1] = VFAT->name1[1];
longFilename[n+2] = VFAT->name1[2];
longFilename[n+3] = VFAT->name1[3];
longFilename[n+4] = VFAT->name1[4];
longFilename[n+5] = VFAT->name2[0];
longFilename[n+6] = VFAT->name2[1];
longFilename[n+7] = VFAT->name2[2];
longFilename[n+8] = VFAT->name2[3];
longFilename[n+9] = VFAT->name2[4];
longFilename[n+10] = VFAT->name2[5];
longFilename[n+11] = VFAT->name3[0];
longFilename[n+12] = VFAT->name3[1];
//If this VFAT entry is the last one, add a NUL terminator at the end of the string
if (VFAT->sequenceNumber & 0x40)
longFilename[n+13] = '\0';
}
}
// return if normal file or subdirectory
if (DIR_IS_FILE_OR_SUBDIR(dir)) return n;
}
@ -1788,4 +1822,4 @@ void (*SdBaseFile::oldDateTime_)(uint16_t& date, uint16_t& time) = 0; // NOLINT
#endif // ALLOW_DEPRECATED_FUNCTIONS
#endif
#endif