started writing scaffolding tool

Cargo.toml

@@ -19,6 +19,9 @@ gilrs = "0.10.2"
 winit = "0.28.6"
 softbuffer = "0.3.0"
 gif = "0.12.0"
+clap = {version = "4.3.8", features = ["derive", "cargo"]}
+dunce = "1.0.4"
+path-slash = "0.2.1"
 
 [profile.release-dani]
 inherits = "release"

src/main.rs

@@ -0,0 +1,101 @@
+use clap::{crate_name, crate_version, Parser, Subcommand};
+use dunce::canonicalize;
+use path_slash::PathExt;
+use std::env::{current_dir, set_current_dir};
+use std::fs;
+use std::fs::{write, OpenOptions};
+use std::io::Write;
+use std::path::{Path, PathBuf};
+use std::process::{exit, Command};
+
+#[derive(Parser)]
+struct Cli {
+    #[command(subcommand)]
+    command: Cmd,
+}
+
+#[derive(Subcommand)]
+enum Cmd {
+    /// Creates a new GSA project
+    New {
+        /// Name of new project
+        name: String,
+        /// Use local path to GSA instead of crates.io
+        #[arg(long, short)]
+        local: Option<PathBuf>,
+        /// Overwrite dir/file with name? WARNING: will delete stuff without further confirmation
+        #[arg(long)]
+        overwrite: bool,
+    },
+}
+
+fn main() {
+    let cli = Cli::parse();
+
+    match cli.command {
+        Cmd::New {
+            name,
+            local,
+            overwrite,
+        } => {
+            println!("creating {}", name);
+            let path = Path::new(&name);
+            if path.exists() {
+                if overwrite {
+                    if path.is_dir() {
+                        fs::remove_dir_all(path).unwrap();
+                    } else {
+                        fs::remove_file(path).unwrap();
+                    }
+                } else {
+                    eprintln!(
+                        "aborting: file or directory {} already exists; use --overwrite if you want to delete it",
+                        name
+                    );
+                    exit(1);
+                }
+            }
+            if !Command::new("cargo")
+                .arg("new")
+                .arg(&name)
+                .status()
+                .unwrap()
+                .success()
+            {
+                eprintln!("aborting: cargo new failed");
+                exit(1);
+            }
+            let mut cargo = OpenOptions::new()
+                .write(true)
+                .append(true)
+                .open(path.join("Cargo.toml"))
+                .expect("opening Cargo.toml failed");
+            match local {
+                None => {
+                    writeln!(cargo, "{} = \"{}\"", crate_name!(), crate_version!()).unwrap();
+                }
+                Some(local) => {
+                    writeln!(
+                        cargo,
+                        "{} = {{path = \"{}\"}}",
+                        crate_name!(),
+                        canonicalize(local)
+                            .expect("couldn't find path")
+                            .to_slash_lossy()
+                    )
+                    .unwrap();
+                }
+            }
+            write(
+                path.join("src/main.rs"),
+                include_str!("../examples/hello_world/main.rs"),
+            )
+            .unwrap();
+            write(
+                path.join("src/gfx.gif"),
+                include_bytes!("../examples/hello_world/gfx.gif"),
+            )
+            .unwrap();
+        }
+    }
+}