int main() {
int i;
int argc = 0;
int old_pipe[] = {0,1};
char **args;
while(1) {
printf("$ ");
args = getln(&argc);
if(argc > 0){
if(args != NULL && strcmp(args[0],"") && args[0] != NULL ){
for(i = 0; i < strlen(args[0]); i++){
args[0][i] = tolower(args[0][i]);
}
if(strcmp(args[0],"exit") == 0 || strcmp(args[0],"quit") == 0 ){
printf("exiting program\n");
exit(0);
}else if(strcmp(args[0],"arg") == 0){
arg(args,argc);
}else if(strcmp(args[0],"add") == 0){
add(args);
}else if(strcmp(args[0],"mult") == 0){
mult(args);
}else{
for(i = 0; args[i] != NULL; i++) {
if(strcmp(args[i],"|") == 0){
args[i][0]=' ';
creat_pipe(arg_array(args,argc,i+1),arg_array(args,i+1,0),argc-i,i+1, old_pipe);
i = 0;
break;
}else if(strcmp(args[i],"&") == 0){
args[i][0]=' ';
i = -1;
break;
}
}
if(i == -1){
make_child(args,1,argc);
}else if(i != 0){
make_child(args,0, argc);
}
}
}
}
}
return 0;
}
static COMMAND_FUNC( do_newpipe )
{
const char *pipe_name;
const char *cmd;
const char *mode;
int n;
pipe_name=NAMEOF("name for pipe");
n=WHICH_ONE("read/write",N_RW_CHOICES,rw_choices);
cmd=NAMEOF("command");
if( n < 0 || n >= 2 ) return;
if( n == 0 ) mode="r";
else mode="w";
creat_pipe(QSP_ARG pipe_name,cmd,mode);
}
