📄 ff.lst
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414 3 c = dir[n];
415 3 if (c == ' ') break;
416 3 if (a & 0x10 && c >= 'A' && c <= 'Z') c += 0x20;
417 3 *p++ = c;
418 3 }
419 2 }
420 1 *p = '\0';
421 1
422 1 finfo->fattrib = dir[DIR_Attr]; /* Attribute */
423 1 finfo->fsize = LD_DWORD(&dir[DIR_FileSize]); /* Size */
424 1 finfo->fdate = LD_WORD(&dir[DIR_WrtDate]); /* Date */
425 1 finfo->ftime = LD_WORD(&dir[DIR_WrtTime]); /* Time */
426 1 }
427 #endif /* _FS_MINIMIZE <= 1 */
C51 COMPILER V8.08 FF 10/31/2008 14:44:16 PAGE 8
428
429
430
431
432 /*-----------------------------------------------------------------------*/
433 /* Pick a paragraph and create the name in format of directory entry */
434 /*-----------------------------------------------------------------------*/
435
436 static
437 char make_dirfile ( /* 1: error - detected an invalid format, '\0'or'/': next character */
438 const char **path, /* Pointer to the file path pointer */
439 char *dirname /* Pointer to directory name buffer {Name(8), Ext(3), NT flag(1)} */
440 )
441 {
442 1 BYTE n, t, c, a, b;
443 1
444 1
445 1 memset(dirname, ' ', 8+3); /* Fill buffer with spaces */
446 1 a = 0; b = 0x18; /* NT flag */
447 1 n = 0; t = 8;
448 1 for (;;) {
449 2 c = *(*path)++;
450 2 if (c == '\0' || c == '/') { /* Reached to end of str or directory separator */
451 3 if (n == 0) break;
452 3 dirname[11] = _USE_NTFLAG ? (a & b) : 0;
453 3 return c;
454 3 }
455 2 if (c <= ' ' || c == 0x7F) break; /* Reject invisible chars */
456 2 if (c == '.') {
457 3 if (!(a & 1) && n >= 1 && n <= 8) { /* Enter extension part */
458 4 n = 8; t = 11; continue;
459 4 }
460 3 break;
461 3 }
462 2 if (_USE_SJIS &&
463 2 ((c >= 0x81 && c <= 0x9F) || /* Accept S-JIS code */
464 2 (c >= 0xE0 && c <= 0xFC))) {
465 3 if (n == 0 && c == 0xE5) /* Change heading \xE5 to \x05 */
466 3 c = 0x05;
467 3 a ^= 0x01; goto md_l2;
468 3 }
469 2 if (c == '"') break; /* Reject " */
470 2 if (c <= ')') goto md_l1; /* Accept ! # $ % & ' ( ) */
471 2 if (c <= ',') break; /* Reject * + , */
472 2 if (c <= '9') goto md_l1; /* Accept - 0-9 */
473 2 if (c <= '?') break; /* Reject : ; < = > ? */
474 2 if (!(a & 1)) { /* These checks are not applied to S-JIS 2nd byte */
475 3 if (c == '|') break; /* Reject | */
476 3 if (c >= '[' && c <= ']') break;/* Reject [ \ ] */
477 3 if (_USE_NTFLAG && c >= 'A' && c <= 'Z')
478 3 (t == 8) ? (b &= 0xF7) : (b &= 0xEF);
479 3 if (c >= 'a' && c <= 'z') { /* Convert to upper case */
480 4 c -= 0x20;
481 4 if (_USE_NTFLAG) (t == 8) ? (a |= 0x08) : (a |= 0x10);
482 4 }
483 3 }
484 2 md_l1:
485 2 a &= 0xFE;
486 2 md_l2:
487 2 if (n >= t) break;
488 2 dirname[n++] = c;
489 2 }
C51 COMPILER V8.08 FF 10/31/2008 14:44:16 PAGE 9
490 1 return 1;
491 1 }
492
493
494
495
496 /*-----------------------------------------------------------------------*/
497 /* Trace a file path */
498 /*-----------------------------------------------------------------------*/
499
500 static
501 FRESULT trace_path ( /* FR_OK(0): successful, !=0: error code */
502 DIR *dj, /* Pointer to directory object to return last directory */
503 char *fn, /* Pointer to last segment name to return {file(8),ext(3),attr(1)} */
504 const char *path, /* Full-path string to trace a file or directory */
505 BYTE **dir /* Pointer to pointer to found entry to retutn */
506 )
507 {
508 1 DWORD clust;
509 1 char ds;
510 1 BYTE *dptr = NULL;
511 1 FATFS *fs = dj->fs;
512 1
513 1
514 1 /* Initialize directory object */
515 1 clust = fs->dirbase;
516 1 if (fs->fs_type == FS_FAT32) {
517 2 dj->clust = dj->sclust = clust;
518 2 dj->sect = clust2sect(fs, clust);
519 2 } else {
520 2 dj->clust = dj->sclust = 0;
521 2 dj->sect = clust;
522 2 }
523 1 dj->index = 0;
524 1
525 1 if (*path == '\0') { /* Null path means the root directory */
526 2 *dir = NULL; return FR_OK;
527 2 }
528 1
529 1 for (;;) {
530 2 ds = make_dirfile(&path, fn); /* Get a paragraph into fn[] */
531 2 if (ds == 1) return FR_INVALID_NAME;
532 2 for (;;) {
533 3 if (!move_window(fs, dj->sect)) return FR_RW_ERROR;
534 3 dptr = &fs->win[(dj->index & ((SS(fs) - 1) / 32)) * 32]; /* Pointer to the directory entry */
535 3 if (dptr[DIR_Name] == 0) /* Has it reached to end of dir? */
536 3 return !ds ? FR_NO_FILE : FR_NO_PATH;
537 3 if (dptr[DIR_Name] != 0xE5 /* Matched? */
538 3 && !(dptr[DIR_Attr] & AM_VOL)
539 3 && !memcmp(&dptr[DIR_Name], fn, 8+3) ) break;
540 3 if (!next_dir_entry(dj)) /* Next directory pointer */
541 3 return !ds ? FR_NO_FILE : FR_NO_PATH;
542 3 }
543 2 if (!ds) { *dir = dptr; return FR_OK; } /* Matched with end of path */
544 2 if (!(dptr[DIR_Attr] & AM_DIR)) return FR_NO_PATH; /* Cannot trace because it is a file */
545 2 clust = ((DWORD)LD_WORD(&dptr[DIR_FstClusHI]) << 16) | LD_WORD(&dptr[DIR_FstClusLO]); /* Get cluster# of
- the directory */
546 2 dj->clust = dj->sclust = clust; /* Restart scanning at the new directory */
547 2 dj->sect = clust2sect(fs, clust);
548 2 dj->index = 2;
549 2 }
550 1 }
C51 COMPILER V8.08 FF 10/31/2008 14:44:16 PAGE 10
551
552
553
554
555 /*-----------------------------------------------------------------------*/
556 /* Reserve a directory entry */
557 /*-----------------------------------------------------------------------*/
558
559 #if !_FS_READONLY
static
FRESULT reserve_direntry ( /* FR_OK: successful, FR_DENIED: no free entry, FR_RW_ERROR: a disk error occur
-ed */
DIR *dj, /* Target directory to create new entry */
BYTE **dir /* Pointer to pointer to created entry to retutn */
)
{
DWORD clust, sector;
BYTE c, n, *dptr;
FATFS *fs = dj->fs;
/* Re-initialize directory object */
clust = dj->sclust;
if (clust != 0) { /* Dyanmic directory table */
dj->clust = clust;
dj->sect = clust2sect(fs, clust);
} else { /* Static directory table */
dj->sect = fs->dirbase;
}
dj->index = 0;
do {
if (!move_window(fs, dj->sect)) return FR_RW_ERROR;
dptr = &fs->win[(dj->index & ((SS(dj->fs) - 1) / 32)) * 32]; /* Pointer to the directory entry */
c = dptr[DIR_Name];
if (c == 0 || c == 0xE5) { /* Found an empty entry */
*dir = dptr; return FR_OK;
}
} while (next_dir_entry(dj)); /* Next directory pointer */
/* Reached to end of the directory table */
/* Abort when it is a static table or could not stretch dynamic table */
if (clust == 0 || !(clust = create_chain(fs, dj->clust))) return FR_DENIED;
if (clust == 1 || !move_window(fs, 0)) return FR_RW_ERROR;
/* Cleanup the expanded table */
fs->winsect = sector = clust2sect(fs, clust);
memset(fs->win, 0, SS(fs));
for (n = fs->csize; n; n--) {
if (disk_write(fs->drive, fs->win, sector, 1) != RES_OK)
return FR_RW_ERROR;
sector++;
}
fs->winflag = 1;
*dir = fs->win;
return FR_OK;
}
#endif /* !_FS_READONLY */
609
610
611
C51 COMPILER V8.08 FF 10/31/2008 14:44:16 PAGE 11
612
613 /*-----------------------------------------------------------------------*/
614 /* Load boot record and check if it is an FAT boot record */
615 /*-----------------------------------------------------------------------*/
616
617 static
618 BYTE check_fs ( /* 0:The FAT boot record, 1:Valid boot record but not an FAT, 2:Not a boot record or error
- */
619 FATFS *fs, /* File system object */
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