#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <dirent.h>

char *current_path;

void walk(char *path, int step) {
	DIR *dp = opendir(path);
	struct dirent *dirp;
	struct stat statbuf;

	while((dirp = readdir(dp)) != NULL) {
		if(!strcmp(dirp->d_name, ".") || !strcmp(dirp->d_name, "..")) continue;

		lstat(dirp->d_name, &statbuf);

		int i = 0;
		for(; i < step; i++)
			printf("\t");
		printf("%s\n", dirp->d_name);

		if(dirp->d_type == 4) {
			char p[256] = "";
			strcpy(p, path);
			if(step > 0) strcat(p, "/");
			strcat(p, dirp->d_name);
			walk(p, step+1);
		}
	}
}

int main(int argc, char *argv[])
{
	if(argc > 1) current_path = argv[1];
	else current_path = "./";

	walk(current_path, 0);

	return 1;
}