From fd364804e0c4ebff9fd704b74a3e7e22ca6eb749 Mon Sep 17 00:00:00 2001
From: Micah Johnston <micahrjohnston@gmail.com>
Date: Sat, 3 Feb 2024 22:36:53 -0600
Subject: [PATCH] command-line interface for vst3-bindgen

---
 Cargo.toml                   |  1 +
 vst3-bindgen-cli/Cargo.toml  | 16 ++++++++++++++
 vst3-bindgen-cli/src/main.rs | 43 ++++++++++++++++++++++++++++++++++++
 3 files changed, 60 insertions(+)
 create mode 100644 vst3-bindgen-cli/Cargo.toml
 create mode 100644 vst3-bindgen-cli/src/main.rs

diff --git a/Cargo.toml b/Cargo.toml
index d4c707ef..8271a1f1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,4 +23,5 @@ members = [
     "com-scrape",
     "com-scrape-types",
     "vst3-bindgen",
+    "vst3-bindgen-cli",
 ]
diff --git a/vst3-bindgen-cli/Cargo.toml b/vst3-bindgen-cli/Cargo.toml
new file mode 100644
index 00000000..2977f3e3
--- /dev/null
+++ b/vst3-bindgen-cli/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "vst3-bindgen-cli"
+version = "0.1.0"
+authors = ["Micah Johnston <micahrjohnston@gmail.com>"]
+edition = "2021"
+description = "Binding generator for the VST 3 API"
+repository = "https://github.com/coupler-rs/vst3-rs"
+license = "MIT OR Apache-2.0"
+
+[[bin]]
+path = "src/main.rs"
+name = "vst3-bindgen"
+
+[dependencies]
+vst3-bindgen = { path = "../vst3-bindgen", version = "0.2.1" }
+clap = { version = "3.1.17", features = ["derive", "cargo"] }
diff --git a/vst3-bindgen-cli/src/main.rs b/vst3-bindgen-cli/src/main.rs
new file mode 100644
index 00000000..8f701971
--- /dev/null
+++ b/vst3-bindgen-cli/src/main.rs
@@ -0,0 +1,43 @@
+use std::path::PathBuf;
+
+use std::error::Error;
+use std::fs::File;
+use std::io::{stdout, BufWriter, Write};
+use std::process;
+
+use clap::Parser;
+use vst3_bindgen::generate;
+
+#[derive(Parser)]
+struct Vst3Bindgen {
+    sdk_dir: PathBuf,
+
+    #[clap(long, value_name = "TRIPLE")]
+    target: Option<String>,
+
+    #[clap(long, short, value_name = "OUTPUT")]
+    output: Option<String>,
+}
+
+fn vst3_bindgen(cmd: &Vst3Bindgen) -> Result<(), Box<dyn Error>> {
+    let mut bindings = Vec::new();
+
+    generate(&cmd.sdk_dir, cmd.target.as_deref(), &mut bindings)?;
+
+    if let Some(output) = &cmd.output {
+        let file = File::create(output)?;
+        BufWriter::new(file).write_all(&bindings)?;
+    } else {
+        BufWriter::new(stdout()).write_all(&bindings)?;
+    };
+
+    Ok(())
+}
+
+fn main() {
+    let cmd = Vst3Bindgen::parse();
+    if let Err(err) = vst3_bindgen(&cmd) {
+        eprintln!("error: {}", err);
+        process::exit(1);
+    }
+}