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#!/usr/bin/nickle
import File;
string timed_read(file f, int timeout) {
thread reader = fork func() { try { return fgets(f); } catch Thread::signal(int i) { return ""; } }();
thread killer = fork func() { sleep (timeout); Thread::send_signal(reader, 1); }();
poly v = Thread::join(reader);
if (is_string(v))
return v;
return "";
}
void flush_input(file f) {
for (;;) {
string s = timed_read(f, 100);
if (s == "")
break;
}
}
string[*] settings(file f) {
string[...] x = {};
flush_input(f);
fprintf (f, "c s\nv\n");
flush(f);
for (;;) {
string l = File::fgets(f);
x[dim(x)] = l;
if (String::index(l, "software-version") == 0)
break;
}
return x;
}
string[*] find_setting(string[*] s, string match) {
for (int i = 0; i < dim(s); i++)
if (String::index(s[i], match) == 0)
return String::split(s[i], " ");
return (string[*]) {};
}
int[*]
get_radio (file f) {
string[*] s = settings(f);
string[*] cal = find_setting(s, "Radio cal:");
string[*] freq = find_setting(s, "Frequency:");
if (dim(cal) == 0 || dim(freq) == 0)
return (int[2]) { 0, 0 };
int cal_val = string_to_integer(cal[2]);
int freq_val = string_to_integer(freq[1]);
return (int[2]) { cal_val, freq_val };
}
void main () {
string name = argv[1];
file f = open(name, "r+");
int[*] vals = get_radio(f);
printf ("cal %d freq %f\n", vals[0], vals[1] / 1000);
}
main();
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