int
ls(char *dir, char *opts)
{
struct dirent *de;
char path[PATH_MAX+1];
char *chpt;
DIR *dp = 0;
int rval = -1;
struct stat buf;
if ( !dir )
dir = ".";
strncpy(path, dir, PATH_MAX);
path[PATH_MAX] = 0;
chpt = path+strlen(path);
if ( !(dp=opendir(dir)) ) {
perror("opendir");
goto cleanup;
}
while ( (de = readdir(dp)) ) {
ls_r(path, chpt, de->d_name, &buf);
}
rval = 0;
cleanup:
if (dp)
closedir(dp);
return rval;
}
int main ( int argc, char *argv[] ) {
if (argc != 2) {
fprintf(stderr, "Error Arguments\n");
return 1;
}
int l = strlen(argv[1]);
if (argv[1][l-1] == '/' && l>1)
argv[1][l-1]='\0';
ls_r(argv[1]);
return 0;
}
void ls_r (char *path) {
struct stat mystat;
char newpath[1000];
if(lstat(path, &mystat)==EOF) {
fprintf(stderr, "Error function lstat\n");
exit(2);
}
if (!S_ISDIR(mystat.st_mode)) //sono in un file
return;
else {
fprintf(stdout, "%s: \n", path);
// per ogni file qui presente stampa e ricorre
DIR *dp= opendir(path);
if(dp==NULL) {
fprintf(stderr, "Error function opendir\n");
exit(3);
}
struct dirent *dirp;
while ((dirp=readdir(dp))!= NULL){ //stampa dei file contenuti nella directory corrente
if (dirp->d_name[0] != '.')
fprintf(stdout, "%s\t", dirp->d_name);
}
fprintf(stdout, "\n");
rewinddir(dp); //ricorsione
while ((dirp=readdir(dp))!= NULL){
//printf("[ %s ]\n", dirp->d_name);
if (dirp->d_name[0] != '.' ){
if(strcmp(path,"/")==0) sprintf(newpath, "%s%s", path, dirp->d_name);
else sprintf(newpath, "%s/%s", path, dirp->d_name);
//fprintf(stderr, "\n[ %s ]\n", newpath);
ls_r(newpath);
}
}
closedir(dp);
}
return;
}
