Initial commit

.gitignore

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+/target

Cargo.toml

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+[package]
+name = "s0_meter"
+version = "0.1.0"
+authors = ["hk"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+clap = "2.33.3"

auto_test.sh

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+#!/bin/bash
+
+# Start test if one of the files was modified
+cargo install cargo-watch
+
+RUST_BACKTRACE=full cargo watch -x "test -- --nocapture"

src/main.rs

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+#[macro_use]
+extern crate clap;
+
+const APP_VERSION: &'static str = env!("CARGO_PKG_VERSION");
+const DEFAULT_CONFIG_FILE_NAME: &str = "/etc/s0_logger.cfg";
+
+fn main() {
+    let cli_args = clap_app!(s0_meter =>
+        (version: APP_VERSION)
+        (author: "Harald Kube <harald.kube@gmx.de")
+        (about: "Listen for S0 pulses at the given GPIO pins")
+        (@arg v: -v ... "Set the verbosity level (up to -vvv)")
+        (@arg config: -c --config +takes_value "The name of the config file (default: /etc/s0_logger.cfg)")
+    ).get_matches();
+
+    let log_level = cli_args.occurrences_of("v");
+    match log_level {
+        0 => println!("No logging"),
+        1 => println!("A little logging"),
+        2 => println!("A little more logging"),
+        _ => println!("A lot logging"),
+    };
+
+    let config_file_name = cli_args
+        .value_of("config")
+        .unwrap_or(DEFAULT_CONFIG_FILE_NAME);
+    println!("Read the config from file '{}'", config_file_name);
+
+}