use std::io::{BufWriter, Write};
use std::path::{Path, PathBuf};
fn main() -> std::io::Result<()> {
println!("cargo:rustc-check-cfg=cfg(slint_debug_property)");
let cargo_manifest_dir = PathBuf::from(std::env::var_os("CARGO_MANIFEST_DIR").unwrap());
let library_dir = PathBuf::from("widgets");
println!("cargo:rerun-if-changed={}", library_dir.display());
let output_file_path = Path::new(&std::env::var_os("OUT_DIR").unwrap())
.join(Path::new("included_library").with_extension("rs"));
let mut file = BufWriter::new(std::fs::File::create(&output_file_path)?);
write!(
file,
r#"
fn widget_library() -> &'static [(&'static str, &'static BuiltinDirectory<'static>)] {{
&[
"#
)?;
for style in cargo_manifest_dir.join(&library_dir).read_dir()?.filter_map(Result::ok) {
if !style.file_type().is_ok_and(|f| f.is_dir()) {
continue;
}
let path = style.path();
writeln!(
file,
"(\"{}\", &[{}]),",
path.file_name().unwrap().to_string_lossy(),
process_style(&cargo_manifest_dir, &path)?
)?;
}
writeln!(file, "]\n}}")?;
println!("cargo:rustc-env=SLINT_WIDGETS_LIBRARY={}", output_file_path.display());
Ok(())
}
fn process_style(cargo_manifest_dir: &Path, path: &Path) -> std::io::Result<String> {
let library_files: Vec<PathBuf> = cargo_manifest_dir
.join(path)
.read_dir()?
.filter_map(Result::ok)
.filter(|entry| {
entry.file_type().is_ok_and(|f| !f.is_dir())
&& entry
.path()
.extension()
.map(|ext| {
ext == std::ffi::OsStr::new("slint")
|| ext == std::ffi::OsStr::new("60")
|| ext == std::ffi::OsStr::new("svg")
|| ext == std::ffi::OsStr::new("svgz")
})
.unwrap_or_default()
})
.map(|entry| entry.path())
.collect();
Ok(library_files
.iter()
.map(|file| {
format!(
"&BuiltinFile {{path: r#\"{}\"# , contents: include_bytes!(concat!(env!(\"CARGO_MANIFEST_DIR\"), r#\"/{}\"#))}}",
file.file_name().unwrap().to_string_lossy(),
file.strip_prefix(cargo_manifest_dir).unwrap().display()
)
})
.collect::<Vec<_>>()
.join(","))
}