From c77f6b72e43033fa9ae0c08591be017fdd37d5df Mon Sep 17 00:00:00 2001
From: Marcel Schneider <marcel@webschneider.org>
Date: Mon, 11 Feb 2019 17:30:25 +0100
Subject: [PATCH] Initial commit

---
 .gitignore  |  2 ++
 Cargo.lock  | 66 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml  |  8 +++++++
 src/main.rs | 31 +++++++++++++++++++++++++
 4 files changed, 107 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 src/main.rs

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..f0e3bca
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/target
+**/*.rs.bk
\ No newline at end of file
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..e44d40b
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,66 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "cfg-if"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "crossbeam-channel"
+version = "0.3.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "crossbeam-utils 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.6.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "crossbeam-utils"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "lazy_static"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "smallvec"
+version = "0.6.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "stopwatch"
+version = "0.1.0"
+dependencies = [
+ "crossbeam-channel 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "unreachable"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "void"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[metadata]
+"checksum cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "082bb9b28e00d3c9d39cc03e64ce4cea0f1bb9b3fde493f0cbc008472d22bdf4"
+"checksum crossbeam-channel 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "0f0ed1a4de2235cabda8558ff5840bffb97fcb64c97827f354a451307df5f72b"
+"checksum crossbeam-utils 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "f8306fcef4a7b563b76b7dd949ca48f52bc1141aa067d2ea09565f3e2652aa5c"
+"checksum lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a374c89b9db55895453a74c1e38861d9deec0b01b405a82516e9d5de4820dea1"
+"checksum smallvec 0.6.8 (registry+https://github.com/rust-lang/crates.io-index)" = "88aea073965ab29f6edb5493faf96ad662fb18aa9eeb186a3b7057951605ed15"
+"checksum unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "382810877fe448991dfc7f0dd6e3ae5d58088fd0ea5e35189655f84e6814fa56"
+"checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..4806b78
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "stopwatch"
+version = "0.1.0"
+authors = ["Marcel Schneider <marcel@webschneider.org>"]
+edition = "2018"
+
+[dependencies]
+crossbeam-channel = "0.3"
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..3b4a562
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,31 @@
+//! stopwatch is a simple CLI stopwatch
+
+use crossbeam_channel::tick;
+use std::io::{stdout, Write};
+use std::time::{Duration, Instant};
+
+#[macro_use]
+extern crate crossbeam_channel;
+
+fn main() {
+    let out = stdout();
+    let mut out = out.lock();
+
+    // 30 fps should be enough
+    let step_duration = Duration::from_millis(1000 / 30);
+    let start = Instant::now();
+    let ticker = tick(step_duration);
+
+    loop {
+        select! {
+            recv(ticker) -> now => {
+                let elapsed = now.unwrap().duration_since(start);
+                let secs = elapsed.as_secs();
+                let millis = elapsed.subsec_millis();
+                write!(out, "\r[2K").unwrap();
+                write!(out, "{:02}:{:02}:{:03}", secs/60, secs % 60, millis).unwrap();
+                out.flush().unwrap();
+            }
+        }
+    }
+}