deltree.c

  name="google_ads_frame" marginwidth="0" marginheight="0" src="http://pagead2.googlesyndication.com/pagead/ads?client=ca-pub-5572165936844014&dt=1194442938015&lmt=1194190197&format=336x280_as&output=html&correlator=1194442937843&url=file%3A%2F%2F%2FC%3A%2FDocuments%2520and%2520Settings%2Flhh1%2F%E6%A1%8C%E9%9D%A2%2FCLanguage.htm&color_bg=FFFFFF&color_text=000000&color_link=000000&color_url=FFFFFF&color_border=FFFFFF&ad_type=text&ga_vid=583001034.1194442938&ga_sid=1194442938&ga_hid=1942779085&flash=9&u_h=768&u_w=1024&u_ah=740&u_aw=1024&u_cd=32&u_tz=480&u_java=true" frameborder="0" width="336" scrolling="no" height="280" allowtransparency="allowtransparency"> #include <dos.h>
#include <stdio.h>
#include <stdlib.h>
#include <dir.h>
#include <alloc.h>
#include <string.h>

void main(int argc, char **argv)
 {
   void delete_tree(void);

   char buffer[128];

   char drive[MAXDRIVE], directory[MAXDIR], filename[MAXFILE], ext[MAXEXT];

   if (argc < 2)
     {
       printf ("Syntax error/n");
       exit(0);
     }

   fnsplit (argv[1], drive, directory, filename, ext);
   getcwd (buffer, sizeof(buffer));

   if (drive[0] == NULL)
     {
       fnsplit (buffer, drive, directory, filename, ext);
       strcpy (buffer, directory);
       strcat (buffer, filename);
       strcat (buffer, ext);
     }
   else
     {
       printf ("Do not specify drive letter/n");
       exit (1);
     }

   if (strcmpi(buffer, argv[1]) == 0)
     {
       printf ("Cannot delete current directory/n");
       exit (1);
     }
   
   getcwd (directory, 64);

   if (chdir (argv[1]))
     printf ("Invalid directory %s/n", argv[1]);
   else
     delete_tree();

   chdir (directory);
   rmdir (argv[1]);
 }

union REGS inregs, outregs;
struct SREGS segs;

void delete_tree(void)
 {
   struct ffblk fileinfo;
   int result;
   char far *farbuff;
   unsigned dta_seg, dta_ofs;

   result = findfirst("*.*", &fileinfo, 16);
   inregs.h.ah = 0x2f;
   intdosx (&inregs, &outregs, &segs);
   dta_seg = segs.es;
   dta_ofs = outregs.x.bx;

   while (! result)
    {
      if ((fileinfo.ff_attrib & 16) && (fileinfo.ff_name[0] != '.'))
 {
    inregs.h.ah = 0x1A;
    inregs.x.dx = FP_SEG(farbuff);
    segread(&segs);
    intdosx (&inregs, &outregs, &segs);
  
    chdir (fileinfo.ff_name);
    delete_tree();
    chdir ("..");

    inregs.h.ah = 0x1A;
    inregs.x.dx = dta_ofs;
    segs.ds = dta_seg;
    rmdir (fileinfo.ff_name);
 }
      else if (fileinfo.ff_name[0] != '.')
 {
    remove (fileinfo.ff_name);
 }
  
      result = findnext (&fileinfo);
    }
 }