© January 1997 Tony Lawrence

LD.C Tony Lawrence:

/* An alternative to DIR.  Windows file manager is much better,
(and so are the more recent versions of DIR), but this still may
have use, and if nothing else, you can crib the asm routines for your
own use */

#include <stdio.h>
#include <string.h>
#include <malloc.h>
#include <stdlib.h>
#include <direct.h>
#include <dos.h>

#define Dir_Mask        16
#define Any_Mask        22
#define Showit          1
#define DontShow        0
#define WIDTH           78
struct dta {
char dos_reserved[21];
char flag;
short time;
short date;
long size;
char name[13];
} ;
struct  dta *pd;

void    s_print(struct dta *this);
int     compare(char *this,char *that);
int     makename(char *t,char *u);
int     savewild(),getwild();
char    *basename(char *string);
char    *qualify(char *p);

int  F_sort=1;
int  F_quick=0;
int  F_names=0;
int  F_long=0;
int  F_files=1;
int  F_dirs=1;
int  F_asterix=1;
int  F_data=0;
int  F_count=0;
int  Wild_control=0;
int  Num_Name_holders=0;
int T_drive=0;
long Total_bytes=0;
long Total_files=0;
long Total_subs=0;
long FT_bytes=0;
long SD_bytes=0;
long T_files=0,T_subs=0;

char S_wild[10][128];
char Name_holders[512][WIDTH];
char Fname_buf[128];
char Safe[128];
char *Wild=Fname_buf;
char *Flag_args,*File_args;
char *File_date="00/00/00";
char *File_time="00:00:00";

main(argc,argv)
int argc;
char **argv;

{
int x;

argc=get_args(argc,argv);
strcpy(Wild,File_args);
Wild=qualify(Wild);          /* get args & flags */

do_dir(Any_Mask,Showit);                /* gather data */

sr_print();                  /* print it out */
if (F_data)
 data();
}

do_dir(int val,int show)
{
pd=(struct dta *) malloc(sizeof(struct dta));

_asm {
        pusha
        call    setdta
        mov     ah,0x4e
        mov     dx,Wild
        mov     cx,val
        int     0x21
        jb      no_more
d_loop: mov     si,pd
        mov     ax,[si+30]
        cmp     al,'.'
        jz      jfnext
        cmp     show,1
        jz      doshow
        mov     si,pd
        mov     ax,[si+21]
        and     ax,Dir_Mask
        jz      noshow
        add     si,30
        push    si
        mov     ax,Wild
        push    ax
        call    savewild
        call    makename
        pop     ax
        pop     ax
        push    0
        push    Any_Mask
        push    pd
        call    do_dir
        pop     pd
        pop     ax
        pop     ax
        call    setdta
        call    getwild
        jmp     noshow
no_more:jmp     outahere
jfnext: jmp     fnext
doshow: push    pd
        call    showit
        pop     pd
        call    setdta
        jmp     fnext
noshow: mov     si,pd
        mov     ax,[si+21]
        and     ax,Dir_Mask
        jnz      isadir
        add     word ptr Total_files,1
        adc     word ptr Total_files+2,0
        mov     ax,[si+26]
        mov     cx,[si+28]
        add     word ptr Total_bytes,ax;
        adc     word ptr Total_bytes+2,cx;
        jmp     fnext
isadir: add     word ptr Total_subs,1
        adc     word ptr Total_subs+2,0
fnext:  mov     ah,0x4f
        int     0x21
        jb      no_more
        jmp     d_loop
setdta: mov     dx,pd
        mov     ah,0x1a
        int     0x21
        ret
showit: push    pd
        call    s_print
        pop     pd
        ret
outahere:
        popa

     }
}

make_date(struct dta *dtp)
{
int year=0,month=0,day=0,is_today=0;
int fyear=0,fmonth=0,fday=0;
int fhour=0,fminutes=0,fseconds=0;

_asm {
        push    di
        push    si
        push    bp
        push    sp
        push    cx
        mov     ah,0x2A
        int     0x21
        mov     year,cx
        mov     month,dh
        mov     day,dl
        mov     si,dtp
        mov     bx,[si+22]
        mov     dx,[si+24]
        mov     ax,bx
        and     ax,31
        shl     ax,1
        mov     fseconds,ax
        mov     ax,bx
        and     ax,32+64+128+256+512+1024
        shr     ax,5
        mov     fminutes,ax
        mov     ax,bx
        and     ax,2048+4096+8192+16384+32768
        shr     ax,11
        mov     fhour,ax
        mov     ax,dx
        and     ax,31
        mov     fday,ax
        mov     ax,dx
        and     ax,32+64+128+256
        shr     ax,5
        mov     fmonth,ax
        mov     ax,dx
        and     ax,512+1024+2048+4096+8192+16384+32768
        shr     ax,9
        mov     fyear,ax
        pop     cx
        pop     sp
        pop     bp
        pop     si
        pop     di
}

if (fyear == (year-1980) && fmonth == month && fday == day)
        is_today=1;
   sprintf(File_time,"%2.2d:%2.2d:%2.2d",fhour,fminutes,fseconds);
   sprintf(File_date,"%2.2d/%2.2d/%2.2d",fmonth,fday,fyear+80);
return(is_today);
}

void s_print(struct dta *dtp)
{
int is_today;
char fn_temp[13];
char counts[30]="";
int is_directory=(dtp->flag & Dir_Mask);
int not_directory=!is_directory;
int want_files=!F_dirs;
int want_dirs=!F_files;

if ((is_directory && want_files)         ||
    (not_directory && want_dirs))
          return;

is_today=make_date(dtp);
FT_bytes += dtp->size;
if (is_directory)
        {
        Total_bytes=0;
        Total_files=0;
        Total_subs=0;
        T_subs++;
        if (!F_quick && !F_names)
           {
           strcpy(Safe,Wild);
           makename(Wild,dtp->name);
           do_dir(Any_Mask,DontShow);
           strcpy(Wild,Safe);
           SD_bytes += Total_bytes;
           }
        if (!F_long)
            {
            if (F_asterix)
               {  sprintf(Name_holders[Num_Name_holders++],"* %-10s %8s %8ld",dtp->name,(is_today==1 ? File_time : File_date),Total_bytes); }
            else
               {
                sprintf(fn_temp,"%s\\",dtp->name);
                sprintf(Name_holders[Num_Name_holders++],"%-12s %8s %8ld",fn_temp,(is_today==1 ? File_time : File_date),Total_bytes);
               }
            }
        else
            {
            if (F_count)
                 { sprintf(counts,"%4ld F %4ld S",Total_files,Total_subs);}
            if (F_names && !F_files)
                 { sprintf(fn_temp,"%s",dtp->name);}
            else
                 { sprintf(fn_temp,"%s\\",dtp->name);}
            if (!F_names)
                {
                sprintf(Name_holders[Num_Name_holders++],"%-12s %8s  %8s %8ld   %-30s",fn_temp,File_date,File_time,Total_bytes,counts);
                }
            if (F_names)
                {
                sprintf(Name_holders[Num_Name_holders++],"%-12s",fn_temp);
                }
            }
        }
else   /* Not a directory */
{
T_files++;
if (!F_names )
           {
           if (!F_long)
                {sprintf(Name_holders[Num_Name_holders++],"%-12s %8s %8ld",dtp->name,(is_today==1 ? File_time : File_date),dtp->size);}
           if (F_long)
                {sprintf(Name_holders[Num_Name_holders++],"%-12s %8s  %8s %8ld",dtp->name,File_date,File_time,dtp->size);}

           }
        else
           {
                sprintf(Name_holders[Num_Name_holders++],"%-12s",dtp->name);
           }
}

if (Num_Name_holders==512) { Num_Name_holders=1;strcpy(Name_holders[0],"Error > 511 !!");}

}

sr_print()
{
static int column=0;
static int doing_dirs=1;
int x;
int this_isdir=0,next_isdir=0;
int regular_list=(!F_long && !F_names && F_dirs && F_files);
int long_list=(F_long || F_names);
int files_only=!F_dirs;

if (F_sort)
   qsort(Name_holders,Num_Name_holders,WIDTH,compare);
else
   doing_dirs=0;

for (x=0; x < Num_Name_holders; x++)
 {
 if (!files_only && !long_list)
 {
   this_isdir=( *Name_holders[x]=='*' || strchr(Name_holders[x],'\\') !=NULL);
   next_isdir=(x < Num_Name_holders && (*Name_holders[x+1] == '*'|| strchr(Name_holders[x+1],'\\') !=NULL));
 }

 if (files_only)
    doing_dirs=0;

 if (!this_isdir && doing_dirs && regular_list)
    {
    doing_dirs=0;
    if (x > 0)
      {
      printf("\n\n");
      }
    column=0;
    }

 printf("%s",Name_holders[x]);

 if (long_list)
 {
 printf("\n");
 continue;
 }

 if (column ==1)
   {
   column=0;
   if (!doing_dirs || (doing_dirs && next_isdir))
    {
    printf("\n");
    }
   }
 else
 {
 column++;
 printf("\t\t");
 if ((x+1) == Num_Name_holders)
    printf("\n");
 }
 }
}

savewild()
{
if (Wild_control > 9) Wild_control=9;
strcpy(S_wild[Wild_control++],Wild);
}
getwild()
{
strcpy(Wild,S_wild[--Wild_control]);
}
makename(char *string,char *name)
{

char *tt;

tt=strstr(string,"*.*");
if (tt)
 sprintf(tt,"%s\\*.*",name);
}

compare(char *this, char *that)
{
int first=0,second=0;
if (*this == '*' || strchr(this,'\\'))
    first=1;
if (*that == '*' || strchr(that,'\\'))
    second=1;

if (first && !second)
        return(-1);
if (second && !first)
        return(1);

return(strcmp(this,that));

}

get_args(int argc,char **argv)
{
int x=0,y=argc;
char c;
char *cp;
char *flags="XX-FLAGS";

cp=basename(argv[0]);
flags[0]=cp[0];
flags[1]=cp[1];
if (flags[1]=='.')
   strcpy(flags+1,"-FLAGS");

cp=malloc(127);File_args=cp;*File_args=0;
cp=malloc(127);Flag_args=cp;*Flag_args=0;


strcpy(Flag_args,getenv(flags));

for (x=1; x < argc; x++)
 {
 if (strstr(argv[x],"/") || strstr(argv[x],"-"))
        {
        strcat(Flag_args,strupr(argv[x]));
        y--;
        }
 else
 {
 strcpy(File_args,argv[x]);
 }

 }
x=0;
while (c=Flag_args[x++])
 {
 switch(toupper(c)) {
   case  'Q' : F_quick=1;F_count=0;break;
   case 'R' :  F_files=1;F_dirs=1;F_quick=0;
               F_long=0; F_names=0; F_sort=1;
               F_asterix=1;F_data=0;F_count=0;break;
   case 'L' : F_long=1;break;
   case 'S' : F_sort=1;break;
   case 'O' : F_sort=0;break;
   case 'N' : F_names=1;F_long=1;break;
   case 'D' : F_files=0;break;
   case 'F' : F_dirs=0;break;
   case 'P' : F_asterix=0;break;
   case 'M' : F_data=1; break;
   case 'C' : F_count=1;F_long=1;F_quick=0; break;
   case 'Z' : F_quick=0;break;
   case '/': break;
   case '-' : break;
   case '\"' : break;
   default : help(basename(argv[0]),Flag_args,File_args);break;
   }
 }

 return(y);


}

help(char *name,char *flags,char *files)
{

fprintf(stderr,"Usage: %s path /QFLSN\n",name);
sprintf(name+2,"-FLAGS");
fprintf(stderr,"use SET %s=/QFLSN for standard behavior\n",name);
fprintf(stderr,"(Your current flags are: %s )\n",flags);
fprintf(stderr,"R-resets to defaults ");
fprintf(stderr,"  (sets Z,S, unsets all others)\n");
fprintf(stderr,"Q-Do not add up bytes for sub-directories (Resets C)\n");
fprintf(stderr,"Z-Do add up bytes (default)\n");
fprintf(stderr,"C-Count files & Subdirectories (implies /L and /Z)\n");
fprintf(stderr,"S-Sort (default)\n");
fprintf(stderr,"O-No Sort\n");
fprintf(stderr,"L-Long Listing\n");
fprintf(stderr,"F-Files only\n");
fprintf(stderr,"D-Directories only\n");
fprintf(stderr,"N-Names only ");
fprintf(stderr,"(D and N together : No \\ at end of directory name)\n");
fprintf(stderr,"P-Plain, do not separate directories\n");
fprintf(stderr,"M-Add directory byte & file counts at end\n");
fprintf(stderr,"\nLater flags override earlier\n");
fprintf(stderr,"\n(C)opyright November 1990, Anthony Lawrence, Lawrence & Clark,Inc\n");
fprintf(stderr,"                  (617) 762-0707\n");
fprintf(stderr,"                  (206) 323-2864\n");
exit(0);
}

char *basename(char *string)
{

_asm  {
      push      si
      push      di
      cld
      mov        si,string
      mov        di,si
f1:   lodsb
      cmp       al, '\\'
      jnz       f2
      mov       di,si
f2:   or         al,al
      jnz        f1
      cld
      mov       string,di
      pop       di
      pop       si
      }

return(string);
}

char *qualify(char *p)
{
unsigned drive=0,drivenow=0,junk=0;
char *dirnow,*drivedir;
int ok=0;

_dos_getdrive(&drivenow);
dirnow=getcwd(NULL,64);

if (*(p+1) == ':')
  drive=(toupper(*p)-64);
else
  drive=drivenow;

T_drive=drive;

if (*p == 0)
  return(strlwr("*.*"));
if (strcmp(p+1,":")==0)
   {
   strcat(p,"*.*");
   return(p);
   }

_dos_setdrive(drive,&junk);
drivedir=getcwd(NULL,64);
ok=chdir(p);

chdir(drivedir);

_dos_setdrive(drivenow,&junk);
chdir(dirnow);
if (!ok)
{
if (strcmp(strrchr(p,'\\'),"\\") !=0)
    {
    strcat(p,"\\*.*");
    }
else
    {
    strcat(p,"*.*");
    }
}
else
  {
  if (!strstr(p,".*") && strstr(p,"*") && !strstr(p,"*."))
     strcat(p,".*");

  }

return(p);


}


data()
{
struct diskfree_t drvinfo;
printf("\n%4ld SubDirs Bytes : %10ld\n",T_subs,SD_bytes);
printf("%4ld Files   Bytes : %10ld\n",T_files,FT_bytes);
printf("     Total   Bytes : %10ld\n\n",SD_bytes+FT_bytes);

_dos_getdiskfree( T_drive, &drvinfo );
printf("Total Disk space   : %10ld bytes,%8ld clusters\n",
            (long)drvinfo.total_clusters *
            drvinfo.sectors_per_cluster *
            drvinfo.bytes_per_sector,(long)drvinfo.total_clusters);

printf("Disk space free    : %10ld bytes,%8ld clusters\n",
            (long)drvinfo.avail_clusters *
            drvinfo.sectors_per_cluster *
            drvinfo.bytes_per_sector,(long)drvinfo.avail_clusters );


}

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