rusty-jeep: init

rusty-jeep/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "rusty-jeep"
+version = "1.0.0"
+edition = "2021"
+[dependencies]
+rodio = "0.16.0"

rusty-jeep/alarm

@@ -0,0 +1,22 @@
+#! /bin/sh
+#
+# //Kübelwagen/alarm SLEEPARGS...
+#
+# where SLEEPARGS are passed to sleep(3)
+#
+set -euf
+cd $(dirname $(readlink -f $0))
+exec >&2
+
+for i in `seq 8000 1000 10000`; do
+  echo $i 100
+done | ./target/debug/rusty-jeep 1
+echo 'if you heard that sound, then goto sleep..^_^'
+
+echo sleep "$@"
+sleep "$@"
+
+echo 'wake up!'
+while :; do
+  echo $(echo "($(od -tu -An -N 2 /dev/urandom)%1000)+500"|bc) $(echo "($(od -tu -An -N 2 /dev/urandom)%500)+100"|bc)
+done | ./target/debug/rusty-jeep 1

rusty-jeep/shell.nix

@@ -0,0 +1,10 @@
+{pkgs ? import <nixpkgs> {}}:
+pkgs.mkShell {
+  packages = [
+    pkgs.rustc
+    pkgs.cargo
+    pkgs.rustfmt
+    pkgs.pkg-config
+    pkgs.alsa-lib
+  ];
+}

rusty-jeep/src/main.rs

@@ -0,0 +1,29 @@
+use rodio::source::{SineWave, Source};
+use rodio::{OutputStream, Sink};
+use std::io;
+use std::time::Duration;
+
+fn main() {
+    let (_stream, stream_handle) = OutputStream::try_default().unwrap();
+    let sink = Sink::try_new(&stream_handle).unwrap();
+
+    for input_line in io::stdin().lines() {
+        if let [frequency_str, duration_str] = input_line
+            .expect("Input empty?")
+            .trim()
+            .split_whitespace()
+            .collect::<Vec<_>>()
+            .as_slice()
+        {
+            let frequency: u32 = frequency_str.parse().expect("Input not an integer");
+            let duration: u32 = duration_str.parse().expect("Input not an integer");
+
+            let sound = SineWave::new(frequency as f32)
+                .take_duration(Duration::from_millis(duration as u64));
+            sink.append(sound);
+        } else {
+            panic!("Expected two integers: FREQUENCY DURATION")
+        }
+    }
+    sink.sleep_until_end();
+}