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DU.C
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C/C++ Source or Header
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1994-01-01
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4KB
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163 lines
/**************************************************
* DU (*nix like) for OS/2 v2.x & DOS
* Copyright (c) 1993,1994 Timo Kokkonen.
*
* compiler: Borland C++ for OS/2 or DOS
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <dos.h>
#ifdef __OS2__
#define VERSION_BITS "32"
#define FILEMASK "*"
#else
#define VERSION_BITS "16"
#define FILEMASK "*.*"
#endif
#define RELEASE_DATE "01-Jan-94"
#define VERSION_NO "1.11"
/******************** GLOBAL VARIABLES *********************/
int level=0;
int sublevels=1;
unsigned long cluster_size;
unsigned long true_sum=0;
unsigned long file_counter=0;
/***********************************************************/
void print_syntax(void)
{
printf("\nSyntax: DU [directory] [/n]\n\n"
" directory = pathname of base-directory\n"
" n = how many sub-directory levels to display,\n"
" default = 1 (0 = all)\n\n");
}
char *SplitDir(char *pathname)
{
static char dirri[_MAX_PATH];
char drive[_MAX_DRIVE],
dir[_MAX_DIR],
file[_MAX_FNAME],
ext[_MAX_EXT];
_splitpath(pathname,drive,dir,file,ext);
strcpy(dirri,drive);
strcat(dirri,dir);
return dirri;
}
int getDiskSize(unsigned char drive,unsigned long *size,
unsigned long *free,
unsigned long *clustersize)
{
struct diskfree_t data;
if(_dos_getdiskfree(drive,&data)==0) {
*size=(unsigned long)data.total_clusters*data.bytes_per_sector*
data.sectors_per_cluster;
*free=(unsigned long)data.avail_clusters*data.bytes_per_sector*
data.sectors_per_cluster;
*clustersize=(unsigned long)data.bytes_per_sector*
data.sectors_per_cluster;
return 1;
}
*size=*free=*clustersize=0;
return 0;
}
unsigned long calc_dir(char *pathname)
{
struct find_t direntry;
char apu[_MAX_PATH];
int done;
unsigned long sum=0;
level++;
strcpy(apu,pathname);
strcat(apu,FILEMASK);
done=_dos_findfirst(apu,_A_NORMAL+_A_RDONLY+_A_HIDDEN+_A_SYSTEM+
_A_SUBDIR+_A_ARCH,&direntry);
while (!done) {
sum+=direntry.size;
if (direntry.size % cluster_size == 0) true_sum+=direntry.size;
else true_sum+=cluster_size+direntry.size-(direntry.size%cluster_size);
if (!(direntry.attrib&_A_SUBDIR)) file_counter++;
if ((direntry.attrib & _A_SUBDIR)&& (strcmp(direntry.name,".."))&&
(strcmp(direntry.name,"."))) {
strcpy(apu,pathname);
strcat(apu,direntry.name);
strcat(apu,"\\");
sum+=calc_dir(apu);
}
done=_dos_findnext(&direntry);
}
if ((level<=sublevels+1)||(sublevels<=0)) printf("%7luk %s\n",sum/1024,pathname);
level--;
return sum;
}
/*************** MAIN PROGRAM ******************************/
int main(int arg_count, char **args)
{
char startpath[_MAX_PATH], *apu;
char *defaultdir = ".";
unsigned long disk_size,disk_free, summa;
double slack;
printf("\nDU/" VERSION_BITS "bit v" VERSION_NO
" Copyright (c) Timo Kokkonen, OH6LXV "
RELEASE_DATE "\n\n");
strcpy(startpath,".");
if (arg_count>1) {
if (!strcmp(args[1],"/?")) {
print_syntax();
exit(0);
}
if (args[arg_count-1][0]=='/')
if (sscanf(&args[arg_count-1][1],"%d",&sublevels)!=1) {
printf("\nInvalid parameter '%s'.\n",args[arg_count-1]);
print_syntax();
exit(1);
}
}
if ((arg_count>=2)&&(args[1][0]!='/')) apu=args[1];
else apu=defaultdir;
if (!_fullpath(startpath,apu,_MAX_PATH)) {
printf("Cannot convert '%s' to absolute path.\n",apu);
exit(1);
}
if (startpath[strlen(startpath)-1]!='\\') strcat(startpath,"\\");
strcpy(startpath,SplitDir(startpath));
if (!getDiskSize(startpath[0]-64,&disk_size,&disk_free,&cluster_size)) {
printf("Cannot read drive %c: \n",startpath[0]);
exit(1);
}
summa=calc_dir(startpath);
if (true_sum!=0) slack=(1-(double)summa/true_sum)*100.0;
else slack=0;
// printf(" %lu %lu %lu \n",disk_size-disk_free,summa,true_sum);
printf("\n %lu bytes in %lu file(s), %1.1lf%% slack (%lu bytes).\n",
true_sum,
file_counter,
slack,
true_sum-summa);
return 0;
}