1 files changed, 52 insertions, 0 deletions
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..939b958
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,52 @@
+extern crate walkdir;
+extern crate phf_codegen;
+
+use std::{env, io};
+use std::fs::File;
+use std::io::{BufWriter, Write};
+use std::path::Path;
+
+use walkdir::WalkDir;
+
+pub fn build<P: AsRef<Path>>(dir: P) -> io::Result<()> {
+    let dir = dir.as_ref();
+
+    let base_path = Path::new(&env::var("CARGO_MANIFEST_DIR").unwrap()).to_owned();
+
+    let dir_name = dir.file_name().expect("Invalid directory name").to_string_lossy();
+    let out_name = format!("dir_{}.rs", dir_name);
+    let out_path = Path::new(&env::var("OUT_DIR").unwrap()).join(out_name);
+    let mut out_file = BufWriter::new(File::create(&out_path).unwrap());
+
+    write!(&mut out_file,
+           "static FILES: phf::Map<&'static str, &'static [u8]> = ")
+        .unwrap();
+
+    // FIXME: rustfmt mangles this
+    let entries: Vec<(String, String)> = WalkDir::new(dir)
+                                             .into_iter()
+                                             .filter(|e| {
+                                                 !e.as_ref()
+                                                   .ok()
+                                                   .map_or(true, |e| e.file_type().is_dir())
+                                             })
+                                             .map(|e| {
+                                                 let entry = e.expect("Invalid dir entry.");
+                                                 let name = format!("{}", entry.path().display());
+                                                 let code = format!("include_bytes!(\"{}\") \
+                                                                     as &'static [u8]",
+                                                                    base_path.join(entry.path())
+                                                                             .display());
+                                                 (name, code)
+                                             })
+                                             .collect();
+
+    let mut map: phf_codegen::Map<&str> = phf_codegen::Map::new();
+    for &(ref name, ref code) in &entries {
+        map.entry(name, code);
+    }
+    map.build(&mut out_file).unwrap();
+
+    write!(&mut out_file, ";\n").unwrap();
+    Ok(())
+}