fn main() {
let target_os = std::env::var("CARGO_CFG_TARGET_OS").unwrap();
if target_os == "macos" || target_os == "ios" {
println!("cargo:rustc-link-lib=framework=WebKit");
}
let is_android = std::env::var("CARGO_CFG_TARGET_OS")
.map(|t| t == "android")
.unwrap_or_default();
if is_android {
use std::{fs, path::PathBuf};
fn env_var(var: &str) -> String {
std::env::var(var).unwrap_or_else(|_| {
panic!(
"`{}` is not set, which is needed to generate the kotlin files for android.",
var
)
})
}
println!("cargo:rerun-if-env-changed=WRY_ANDROID_PACKAGE");
println!("cargo:rerun-if-env-changed=WRY_ANDROID_LIBRARY");
println!("cargo:rerun-if-env-changed=WRY_ANDROID_KOTLIN_FILES_OUT_DIR");
if let Ok(kotlin_out_dir) = std::env::var("WRY_ANDROID_KOTLIN_FILES_OUT_DIR") {
let package = env_var("WRY_ANDROID_PACKAGE");
let library = env_var("WRY_ANDROID_LIBRARY");
let kotlin_out_dir = PathBuf::from(&kotlin_out_dir)
.canonicalize()
.unwrap_or_else(move |_| {
panic!("Failed to canonicalize `WRY_ANDROID_KOTLIN_FILES_OUT_DIR` path {kotlin_out_dir}")
});
let kotlin_files_path =
PathBuf::from(env_var("CARGO_MANIFEST_DIR")).join("src/webview/android/kotlin");
println!("cargo:rerun-if-changed={}", kotlin_files_path.display());
let kotlin_files = fs::read_dir(kotlin_files_path).expect("failed to read kotlin directory");
for file in kotlin_files {
let file = file.unwrap();
let class_extension_env = format!(
"WRY_{}_CLASS_EXTENSION",
file
.path()
.file_stem()
.unwrap()
.to_string_lossy()
.to_uppercase()
);
let class_init_env = format!(
"WRY_{}_CLASS_INIT",
file
.path()
.file_stem()
.unwrap()
.to_string_lossy()
.to_uppercase()
);
println!("cargo:rerun-if-env-changed={}", class_extension_env);
println!("cargo:rerun-if-env-changed={}", class_init_env);
let content = fs::read_to_string(file.path())
.expect("failed to read kotlin file as string")
.replace("{{package}}", &package)
.replace("{{library}}", &library)
.replace(
"{{class-extension}}",
&std::env::var(&class_extension_env).unwrap_or_default(),
)
.replace(
"{{class-init}}",
&std::env::var(&class_init_env).unwrap_or_default(),
);
let auto_generated_comment = match file
.path()
.extension()
.unwrap_or_default()
.to_str()
.unwrap_or_default()
{
"pro" => "# THIS FILE IS AUTO-GENERATED. DO NOT MODIFY!!\n\n",
"kt" => "/* THIS FILE IS AUTO-GENERATED. DO NOT MODIFY!! */\n\n",
_ => "String::new()",
};
let mut out = String::from(auto_generated_comment);
out.push_str(&content);
let out_path = kotlin_out_dir.join(file.file_name());
fs::write(&out_path, out).expect("Failed to write kotlin file");
println!("cargo:rerun-if-changed={}", out_path.display());
}
}
}
}
