Done macro

Cargo.lock

@@ -574,6 +574,7 @@ dependencies = [
  "indicatif",
  "notify-debouncer-mini",
  "predicates",
+ "rustlings-macros",
  "serde",
  "serde_json",
  "shlex",
@@ -582,6 +583,13 @@ dependencies = [
  "winnow",
 ]
 
+[[package]]
+name = "rustlings-macros"
+version = "5.6.1"
+dependencies = [
+ "quote",
+]
+
 [[package]]
 name = "ryu"
 version = "1.0.17"

Cargo.toml

@@ -1,19 +1,30 @@
-[package]
-name = "rustlings"
-description = "Small exercises to get you used to reading and writing Rust code!"
+[workspace]
+resolver = "2"
+
+[workspace.package]
 version = "5.6.1"
 authors = [
   "Liv <mokou@fastmail.com>",
   "Carol (Nichols || Goulding) <carol.nichols@gmail.com>",
 ]
+license = "MIT"
 edition = "2021"
 
+[package]
+name = "rustlings"
+description = "Small exercises to get you used to reading and writing Rust code!"
+version.workspace = true
+authors.workspace = true
+license.workspace = true
+edition.workspace = true
+
 [dependencies]
 anyhow = "1.0.81"
 clap = { version = "4.5.4", features = ["derive"] }
 console = "0.15.8"
 indicatif = "0.17.8"
 notify-debouncer-mini = "0.4.1"
+rustlings-macros = { path = "rustlings-macros" }
 serde_json = "1.0.115"
 serde = { version = "1.0.197", features = ["derive"] }
 shlex = "1.3.0"
@@ -21,10 +32,6 @@ toml_edit = { version = "0.22.9", default-features = false, features = ["parse",
 which = "6.0.1"
 winnow = "0.6.5"
 
-[[bin]]
-name = "rustlings"
-path = "src/main.rs"
-
 [dev-dependencies]
 assert_cmd = "2.0.14"
 glob = "0.3.0"

rustlings-macros/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "rustlings-macros"
+version.workspace = true
+authors.workspace = true
+license.workspace = true
+edition.workspace = true
+
+[lib]
+proc-macro = true
+
+[dependencies]
+quote = "1.0.35"

rustlings-macros/src/lib.rs

@@ -0,0 +1,95 @@
+use proc_macro::TokenStream;
+use quote::quote;
+use std::{fs::read_dir, panic, path::PathBuf};
+
+fn path_to_string(path: PathBuf) -> String {
+    path.into_os_string()
+        .into_string()
+        .unwrap_or_else(|original| {
+            panic!("The path {} is invalid UTF8", original.to_string_lossy());
+        })
+}
+
+#[proc_macro]
+pub fn include_files(_: TokenStream) -> TokenStream {
+    let mut files = Vec::with_capacity(8);
+    let mut dirs = Vec::with_capacity(128);
+
+    for entry in read_dir("exercises").expect("Failed to open the exercises directory") {
+        let entry = entry.expect("Failed to read the exercises directory");
+
+        if entry.file_type().unwrap().is_file() {
+            let path = entry.path();
+            if path.file_name().unwrap() != "README.md" {
+                files.push(path_to_string(path));
+            }
+
+            continue;
+        }
+
+        let dir_path = entry.path();
+        let dir_files = read_dir(&dir_path).unwrap_or_else(|e| {
+            panic!("Failed to open the directory {}: {e}", dir_path.display());
+        });
+        let dir_path = path_to_string(dir_path);
+        let dir_files = dir_files.filter_map(|entry| {
+            let entry = entry.unwrap_or_else(|e| {
+                panic!("Failed to read the directory {dir_path}: {e}");
+            });
+            let path = entry.path();
+
+            if !entry.file_type().unwrap().is_file() {
+                panic!("Found {} but expected only files", path.display());
+            }
+
+            if path.file_name().unwrap() == "README.md" {
+                return None;
+            }
+
+            if path.extension() != Some("rs".as_ref()) {
+                panic!(
+                    "Found {} but expected only README.md and .rs files",
+                    path.display(),
+                );
+            }
+
+            Some(path_to_string(path))
+        });
+
+        dirs.push(quote! {
+            EmbeddedFlatDir {
+                path: #dir_path,
+                readme: EmbeddedFile {
+                    path: concat!(#dir_path, "/README.md"),
+                    content: ::std::include_bytes!(concat!("../", #dir_path, "/README.md")),
+                },
+                content: vec![
+                    #(EmbeddedFile {
+                        path: #dir_files,
+                        content: ::std::include_bytes!(concat!("../", #dir_files)),
+                    }),*
+                ],
+            }
+        });
+    }
+
+    quote! {
+        EmbeddedFiles {
+            info_toml_content: ::std::include_str!("../info.toml"),
+            exercises_dir: ExercisesDir {
+                readme: EmbeddedFile {
+                    path: "exercises/README.md",
+                    content: ::std::include_bytes!("../exercises/README.md"),
+                },
+                files: vec![#(
+                     EmbeddedFile {
+                        path: #files,
+                        content: ::std::include_bytes!(concat!("../", #files)),
+                    }
+                ),*],
+                dirs: vec![#(#dirs),*],
+            },
+        }
+    }
+    .into()
+}

src/main.rs

@@ -27,6 +27,28 @@ mod project;
 mod run;
 mod verify;
 
+struct EmbeddedFile {
+    path: &'static str,
+    content: &'static [u8],
+}
+
+struct EmbeddedFlatDir {
+    path: &'static str,
+    readme: EmbeddedFile,
+    content: Vec<EmbeddedFile>,
+}
+
+struct ExercisesDir {
+    readme: EmbeddedFile,
+    files: Vec<EmbeddedFile>,
+    dirs: Vec<EmbeddedFlatDir>,
+}
+
+struct EmbeddedFiles {
+    info_toml_content: &'static str,
+    exercises_dir: ExercisesDir,
+}
+
 /// Rustlings is a collection of small exercises to get you used to writing and reading Rust code
 #[derive(Parser)]
 #[command(version)]
@@ -87,6 +109,7 @@ enum Subcommands {
 }
 
 fn main() -> Result<()> {
+    let embedded_files = rustlings_macros::include_files!();
     let args = Args::parse();
 
     if args.command.is_none() {