cli: create basic cli application

it is possible to load design and history,
 not yet possible to export results.

Cargo.toml

@@ -7,6 +7,10 @@ default-run = "topola-egui"
 [lib]
 name = "topola"
 
+[[bin]]
+name = "topola-cli"
+required-features = ["cli"]
+
 [[bin]]
 name = "topola-egui"
 required-features = ["egui"]
@@ -16,6 +20,7 @@ name = "topola-sdl2-demo"
 required-features = ["sdl2"]
 
 [features]
+cli = ["dep:clap"]
 egui = ["dep:eframe", "dep:egui", "dep:rfd", "dep:futures"]
 sdl2 = ["dep:sdl2", "dep:gl", "dep:pathfinder_canvas", "dep:pathfinder_geometry", "dep:pathfinder_gl", "dep:pathfinder_renderer", "dep:pathfinder_resources"]
 disable_contracts = ["contracts/disable_contracts"]
@@ -45,6 +50,11 @@ features = ["use-serde"]
 version = "1"
 features = ["derive"]
 
+[dependencies.clap]
+optional = true
+version = "4.5.8"
+features = ["derive"]
+
 [dependencies.eframe]
 optional = true
 version = "0.26.0"

src/bin/topola-cli/main.rs

@@ -0,0 +1,39 @@
+use std::fs::File;
+use std::io::BufReader;
+use std::io::prelude::*;
+use clap::{Parser, Error};
+
+#[derive(Parser)]
+struct Cli {
+    input: std::path::PathBuf,
+    output: std::path::PathBuf,
+    history: Option<std::path::PathBuf>,
+}
+
+fn main() -> Result<(), std::io::Error> {
+
+    let args = Cli::parse();
+
+    let design_file = File::open(args.input)?;
+    let mut design_bufread = BufReader::new(design_file);
+
+    let design = topola::specctra::design::SpecctraDesign::load(design_bufread).unwrap();
+    let board = design.make_board();
+
+    if let Some(history) = args.history {
+        let history_file = File::open(history)?;
+        let mut history_bufread = BufReader::new(history_file);
+        let mut invoker = topola::autorouter::invoker::Invoker::new(
+            topola::autorouter::Autorouter::new(board).unwrap());
+        invoker.replay(serde_json::from_reader(history_bufread).unwrap())
+    }
+    
+    Ok(())
+    // let content = std::fs::read_to_string(&args.input).expect("could not read file");
+
+    // for line in content.lines() {
+    //     if line.contains(&args.pattern) {
+    //         println!("{}", line);
+    //     }
+    // }
+}