use include_dir::{include_dir, Dir};

static PROJECT_DIR: Dir = include_dir!("$CARGO_MANIFEST_DIR");

// of course, you can retrieve a file by its full path
let lib_rs = PROJECT_DIR.get_file("src/lib.rs").unwrap();

// you can also inspect the file's contents
let body = lib_rs.contents_utf8().unwrap();
assert!(body.contains("SOME_INTERESTING_STRING"));

// you can search for files (and directories) using glob patterns
#[cfg(feature = "glob")]
{
    let glob = "**/*.rs";
    for entry in PROJECT_DIR.find(glob).unwrap() {
        println!("Found {}", entry.path().display());
    }
}