/* Here is a program to convert your hosts.net to domain.txt */
#include <stdio.h>
#include <ctype.h>
#include <string.h>

#define LINELEN 256
/* copyright 1989 - John D. Hays, KD7UW */
/*           1991 - John Heaton,  G1YYH */
main(int argc,char *argv[])
{

	FILE *fi,*fo;
	char string[LINELEN-1];
	char addr[20],hname1[80],hname2[80];
	char *x,*y,*z;

	fprintf(stderr,"COPYRIGHT 1989/91 - KD7UW/G1YYH\n");
	if (argc <= 2) {
		fprintf(stderr,"Usage: %s <Hosts.NET> <Domain.TXT> <FULL>\n\007",argv[0]);
		exit(0);
	}

	if ((fi=fopen(argv[1],"r")) != NULL) {
		fo = fopen(argv[2],"w");
		while (fgets(string,LINELEN,fi) != NULL) {
			y = strchr(string,'\n');
			*y = '\0';
			addr[0] = '\0';
			hname1[0] = '\0';
			hname2[0] = '\0';
			if ((string[0] == '#') || (strlen(string) < 3)) {
				fprintf(fo,"%s\n",string);
			} else {
				y = strchr(string,'#');
				if (y != NULL) {
					if (argv[3] != NULL)
						fprintf(fo,"#%s\n",y);
					*y = '\0';
				}
				sscanf(string,"%s%s%s",addr,hname1,hname2);
				fprintf(stderr,"%16s\r",addr);
				if (strchr(hname1,'.'))	{
					x = hname1;
					z = hname2;
				} else {
					x = hname2;
					z = hname1;
				}
				if ((*x == '\0') || (*z == '\0')) {
					fprintf(fo,"%s\tIN\tA\t%s\n",hname1,addr);
				} else {
					if (argv[3] != NULL)
						fprintf(fo,"%s\tIN CNAME\t%s\n",z,x);
					fprintf(fo,"%s\tIN A\t%s\n",x,addr);
				}
			}
		}
	}
}