savestate: add example reader

Signed-off-by: Maxime “pep” Buquet <pep@bouah.net>

savestate/Cargo.toml

@@ -7,3 +7,6 @@ license = "AGPL-3.0-or-later"
 
 [dependencies]
 lazy_static = "1.4"
+
+[dev-dependencies]
+structopt = "0.3"

savestate/examples/savestate.rs

@@ -0,0 +1,37 @@
+// Copyright (C) 2020 "Maxime “pep” Buquet <pep@bouah.net>"
+//
+// This program is free software: you can redistribute it and/or modify it
+// under the terms of the GNU Affero General Public License as published by the
+// Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License
+// for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+use std::fs;
+use std::convert::TryFrom;
+use savestate::SaveState;
+
+use std::path::PathBuf;
+use structopt::StructOpt;
+
+#[derive(Debug, StructOpt)]
+#[structopt(name = "savestate", about = "An example of savestate usage")]
+struct Opt {
+    #[structopt(parse(from_os_str), long, short)]
+    files: Vec<PathBuf>,
+}
+
+fn main() {
+    let opt = Opt::from_args();
+
+    for file in opt.files {
+        let data: Vec<u8> = fs::read(file).unwrap();
+        println!("{:#?}\n", SaveState::try_from(data).unwrap());
+    }
+}