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/*
** LSD - A simple directory lister
** A public domain C demo program by Bob Stout
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <dos.h>
/* For portability, make everything look like MSC 6+ */
#if defined(__TURBOC__)
#include <dir.h>
#define _dos_findfirst(f,a,b) findfirst(f,b,a)
#define _dos_findnext(b) findnext(b)
#define find_t ffblk
#define _A_SUBDIR FA_DIREC
#define attrib ff_attrib
#define name ff_name
#define size ff_fsize
#define wr_time ff_ftime
#define wr_date ff_fdate
#define _dos_getdiskfree getdfree
#define diskfree_t dfree
#define avail_clusters df_avail
#define sectors_per_cluster df_sclus
#define bytes_per_sector df_bsec
#else /* assume MSC/QC */
#include <errno.h>
#endif
#ifdef TRUE
#undef TRUE
#endif
#ifdef FALSE
#undef FALSE
#endif
#ifdef ERROR
#undef ERROR
#endif
enum LOGICAL {ERROR = -1, SUCCESS, FALSE = 0, TRUE};
#ifndef CAST
#define CAST(new_type,old_object) (*((new_type *)&(old_object)))
#endif
#define LAST_CHAR(s) (((char *)s)[strlen(s) - 1])
struct DOS_TIME {
unsigned int ss : 5;
unsigned int mm : 6;
unsigned int hh : 5;
} ;
#define dos_time(t) CAST(struct DOS_TIME, (t))
struct DOS_DATE {
unsigned int da : 5;
unsigned int mo : 4;
unsigned int yr : 7;
} ;
#define dos_date(t) CAST(struct DOS_DATE, (t))
/*
** DOS DIR improved work-alike w/ improved formatting & attribute display
**
** supports /W switch
*/
main(int argc, char *argv[])
{
int i, files = 0, dirs = 0, argptr = 0, errflag = FALSE, cols, drive;
long siz_tot = 0L;
char *p, *fname, *ext, name[13], buf[67], numbuf[12];
struct find_t ff;
#ifndef __ZTC__
struct diskfree_t df;
#endif
int one_column(), five_column();
int (*display)(char *, char *, long, unsigned, unsigned, unsigned)
= one_column;
char *sprintfc(char *, long);
char *capitalize(const char *);
strcpy(buf, fname = "*.*");
if(argc != 1) for (i = 1; i < argc; ++i)
{
if ('/' == argv[i][0])
{
if ('W' == toupper(argv[i][1]))
display = five_column;
else
{
puts("\aUsage: LSD [/W] [file]");
errflag = TRUE;
}
}
else if (!argptr)
argptr = i;
}
if (argptr)
{
fname = argv[argptr];
strcpy(buf, fname);
if ('\\' == LAST_CHAR(buf) || ':' == LAST_CHAR(buf))
strcat(buf, "*.*");
else
{
if (SUCCESS == _dos_findfirst(buf, _A_SUBDIR, &ff))
{
if (ff.attrib & _A_SUBDIR && '.' != *ff.name)
{
if ('\\' != LAST_CHAR(buf))
strcat(buf, "\\");
strcat(buf, "*.*");
}
}
else errflag = TRUE;
}
}
if (':' == buf[1])
drive = toupper(*buf) - '@';
else drive = 0;
if (!errflag && !(_dos_findfirst(buf, 0xff, &ff))) do
{
siz_tot += ff.size;
if (ff.attrib & _A_SUBDIR)
++dirs;
else ++files;
strcpy(name, ff.name);
if (NULL != (p = strchr(name, '.')) && p != name)
{
*p = '\0';
ext = ++p;
}
else ext = "";
cols = (*display)(name, ext, ff.size,
ff.attrib, ff.wr_date, ff.wr_time);
} while (SUCCESS == _dos_findnext(&ff));
else
{
fprintf(stderr, "Cannot do directory on '%s'\n", fname);
exit(-1);
}
if (cols)
fputc('\n', stdout);
sprintfc(numbuf,siz_tot);
printf("\n%3d Files totalling %s bytes\n", files, numbuf);
printf("%3d Director%s\n", dirs, (1 == dirs) ? "y" : "ies");
#ifndef __ZTC__
_dos_getdiskfree(drive, &df);
sprintfc(numbuf, (long)df.avail_clusters * df.sectors_per_cluster *
df.bytes_per_sector);
#else /* if ZTC */
sprintfc(numbuf, dos_getdiskfreespace(drive));
#endif
printf("%s bytes free\n", numbuf);
return 0;
}
/*
** The single column directory entry display function
*/
int one_column(char *name,
char *ext,
long size,
unsigned attribs,
unsigned date,
unsigned time)
{
register int i, mask;
static char *atr = "RHSVDA", szbuf[12];
sprintfc(szbuf, size);
printf("%-8s %-3s %12s ", capitalize(name), capitalize(ext), szbuf);
for (i = 0, mask = 1; i < 6; ++i, mask <<= 1)
{
if (attribs & mask)
fputc(atr[i], stdout);
else fputc('.' , stdout);
}
printf("%4d-%02d-%02d%4d:%02d:%02d\n",
dos_date(date).mo,
dos_date(date).da,
(dos_date(date).yr + 80) % 100,
dos_time(time).hh,
dos_time(time).mm,
dos_time(time).ss);
return 0;
}
/*
** The five column directory entry display function
*/
int five_column(char *name,
char *ext,
long size,
unsigned attribs,
unsigned date,
unsigned time)
{
static int cols = 0;
printf("%-8s %-3s%s", capitalize(name), capitalize(ext),
(5 > ++cols) ? " " : "");
if (0 == (cols %= 5))
putchar('\n');
return (cols);
}
/*
** Display a long int using commas as thousands separators
*/
char *sprintfc(char *string, long num)
{
if (num > 999999L)
{
sprintf(string, "%d,%03d,%03d",
(int)(num / 1000000L),
(int)((num % 1000000L) / 1000L),
(int)(num % 1000L));
}
else
{
if (num > 999L)
{
sprintf(string, "%d,%03d",
(int)(num / 1000L),
(int)(num % 1000L));
}
else sprintf(string, "%d", (int)num);
}
return string;
}
/*
** Capitalize a name or extension in place
*/
char *capitalize(const char *string)
{
int flag = 0;
char *ptr = (char *)string;
do
{
if (isalpha(*ptr))
{
if (flag)
*ptr = (char)tolower(*ptr);
else
{
flag = 1;
*ptr = (char)toupper(*ptr);
}
}
else flag = 0;
} while (*++ptr);
return (char *)string;
}
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