Add VST3 option

build.rs

@@ -1,3 +1,56 @@
-fn main() {
-    //helpers::copy_artifact_to_out_dir("airfreshener", "AirFreshener");
+use std::{env, fs, path::Path};
+
+#[cfg(debug_assertions)]
+const CONFIG: &str = "debug";
+#[cfg(not(debug_assertions))]
+const CONFIG: &str = "release";
+
+#[cfg(target_os = "macos")]
+const OS_LIB_EXT: &str = "dylib";
+#[cfg(target_os = "windows")]
+const OS_LIB_EXT: &str = "dll";
+#[cfg(target_os = "linux")]
+const OS_LIB_EXT: &str = "so";
+
+#[cfg(target_os = "macos")]
+const OS_NAME: &str = "macOS";
+#[cfg(target_os = "windows")]
+const OS_NAME: &str = "Windows";
+#[cfg(target_os = "linux")]
+const OS_NAME: &str = "Linux";
+
+fn get_output_lib_name(lib_name: &str) -> &'static str {
+    match lib_name {
+        "airfreshener" => "AirFreshener",
+        _ => "Unknown",
+    }
+}
+
+fn main() {
+    let target_dir = Path::new(&env::var("CARGO_MANIFEST_DIR").unwrap_or("".to_owned()))
+        .join(format!("target/{CONFIG}"));
+    let artifact_dir = target_dir.join("deps/artifact");
+
+    let artifact_dirs =
+        fs::read_dir(artifact_dir).expect("Failed to read build artifact directory");
+    for dir_result in artifact_dirs {
+        if let Ok(dir) = dir_result {
+            if let Some(lib_name) = dir.file_name().to_string_lossy().split('-').next() {
+                let lib_path = dir
+                    .path()
+                    .join(format!("cdylib/lib{lib_name}.{OS_LIB_EXT}"));
+                if fs::exists(&lib_path).unwrap_or_default() {
+                    let out_lib_name = get_output_lib_name(lib_name);
+                    let out_lib_path = target_dir.join(format!("{out_lib_name}_{OS_NAME}.clap"));
+                    if let Err(err) = fs::copy(&lib_path, &out_lib_path) {
+                        println!(
+                            "cargo::error=Output library lib{lib_name:?}.{OS_LIB_EXT} could not be copied to target: {err}"
+                        );
+                    }
+                } else {
+                    println!("cargo::error=Output library lib{lib_name:?}.{OS_LIB_EXT} not found");
+                }
+            }
+        }
+    }
 }