Show version on GUI and terminal

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "noaa-apt"
-version = "0.9.1"
+version = "0.9.4"
 authors = ["Martin Bernardi <[email protected]>"]
 
 [dependencies]

src/gui.rs

@@ -10,6 +10,8 @@ use gio::prelude::*;
 use gtk::prelude::*;
 use gtk::Builder;
 
+const VERSION: &'static str = env!("CARGO_PKG_VERSION");
+
 // make moving clones into closures more convenient
 macro_rules! clone {
     (@param _) => ( _ );
@@ -66,6 +68,15 @@ fn build_ui(application: &gtk::Application) {
     status_label.set_label("Ready");
     start_button.set_sensitive(true);
 
+    // Set version on footer
+
+    let footer_label: gtk::Label = builder.get_object("footer_label")
+            .expect("Couldn't get footer_label");
+    footer_label.set_label(format!(
+"noaa-apt {}
+Martín Bernardi
+[email protected]", VERSION).as_str());
+
     // Configure decode_output_entry file chooser
 
     let decode_output_entry: gtk::Entry = builder.get_object("decode_output_entry")

src/main.rs

@@ -16,11 +16,14 @@ mod misc;
 mod gui;
 mod err;
 
+const VERSION: &'static str = env!("CARGO_PKG_VERSION");
+
 fn main() -> err::Result<()> {
 
     let mut input_filename: Option<String> = None;
     let mut debug = false;
     let mut quiet = false;
+    let mut print_version = false;
     let mut output_filename: Option<String> = None;
     let mut resample_output: Option<u32> = None;
     {
@@ -30,6 +33,9 @@ fn main() -> err::Result<()> {
         parser.refer(&mut input_filename)
             .add_argument("input_filename", argparse::StoreOption,
             "Input WAV file.");
+        parser.refer(&mut print_version)
+            .add_option(&["-v", "--version"], argparse::StoreTrue,
+            "Show version and quit.");
         parser.refer(&mut debug)
             .add_option(&["-d", "--debug"], argparse::StoreTrue,
             "Print debugging messages.");
@@ -49,6 +55,11 @@ fn main() -> err::Result<()> {
         parser.parse_args_or_exit();
     }
 
+    if print_version {
+        println!("noaa-apt image decoder version {}", VERSION);
+        std::process::exit(0);
+    }
+
     if debug {
         simple_logger::init_with_level(log::Level::Debug)?;
     } else if quiet {
@@ -57,6 +68,8 @@ fn main() -> err::Result<()> {
         simple_logger::init_with_level(log::Level::Info)?;
     }
 
+    info!("noaa-apt image decoder version {}", VERSION);
+
     match input_filename {
 
         // Input filename set, command line