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#include "ulib/stdio.h"
#include "ulib/stdlib.h"
#include "ulib/string.h"
#include "user/user.h"
#include "common/fcntl.h"
struct FAT32_DirEnt
{
char name[11];
uint8 attr;
uint8 lcase;
uint8 ctime_cs;
uint16 ctime;
uint16 cdate;
uint16 adate;
uint16 fstClusHI;
uint16 wtime;
uint16 wdate;
uint16 fstClusLO;
uint32 fileSize;
} __attribute__((packed));
#define ATTR_DIRECTORY 0x10
#define ATTR_LONG_NAME 0x0F
void fmt_name(char *dst, const char *src)
{
int i;
char *d = dst;
for (i = 0; i < 8; i++)
{
if (src[i] == ' ')
break;
*d++ = src[i];
}
if (src[8] != ' ')
{
*d++ = '.';
for (i = 8; i < 11; i++)
{
if (src[i] == ' ')
break;
*d++ = src[i];
}
}
*d = 0;
for (d = dst; *d; d++)
{
if (*d >= 'A' && *d <= 'Z')
*d += 32;
}
}
void ls(const char *path)
{
int fd;
struct FAT32_DirEnt de;
char name_buf[16];
if ((fd = open(path, O_RDONLY)) < 0)
{
printf("ls: cannot open %s\n", path);
return;
}
while (read(fd, &de, sizeof(de)) == sizeof(de))
{
if (de.name[0] == 0)
{
break;
}
if ((unsigned char)de.name[0] == 0xE5)
{
continue;
}
if ((de.attr & ATTR_LONG_NAME) == ATTR_LONG_NAME)
{
continue;
}
fmt_name(name_buf, de.name);
printf("%s %d\t%s\n",
(de.attr & ATTR_DIRECTORY) ? "<DIR>" : " ",
de.fileSize,
name_buf);
}
close(fd);
}
int main(int argc, char *argv[])
{
if (argc < 2)
{
ls(".");
}
else
{
for (int i = 1; i < argc; i++)
{
ls(argv[i]);
}
}
exit(0);
}
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