♻️ Major code restructuring

helpers/pagetop-build/src/lib.rs

@@ -0,0 +1,101 @@
+//! This function uses the [static_files](https://docs.rs/static-files/latest/static_files/) library
+//! to embed at compile time a bundle of static files in your binary.
+//!
+//! Just create folder with static resources in your project (for example `static`):
+//!
+//! ```bash
+//! cd project_dir
+//! mkdir static
+//! echo "Hello, world!" > static/hello
+//! ```
+//!
+//! Add to `Cargo.toml` the required dependencies:
+//!
+//! ```toml
+//! [build-dependencies]
+//! pagetop-build = { ... }
+//! ```
+//!
+//! Add `build.rs` with call to bundle resources (*guides* will be the magic word in this example):
+//!
+//! ```rust#ignore
+//! use pagetop_build::StaticFilesBundle;
+//!
+//! fn main() -> std::io::Result<()> {
+//!     StaticFilesBundle::from_dir("./static")
+//!         .with_name("guides")
+//!         .build()
+//! }
+//! ```
+//!
+//! Optionally, you can pass a function to filter those files into the `./static` folder which
+//! should be excluded in the resources bundle:
+//!
+//! ```rust#ignore
+//! use pagetop_build::StaticFilesBundle;
+//!
+//! fn main() -> std::io::Result<()> {
+//!     StaticFilesBundle::from_dir("./static")
+//!         .with_name("guides")
+//!         .with_filter(except_css_dir)
+//!         .build()
+//! }
+//!
+//! fn except_css_dir(p: &Path) -> bool {
+//!     if let Some(parent) = p.parent() {
+//!         !matches!(parent.to_str(), Some("/css"))
+//!     }
+//!     true
+//! }
+//! ```
+//!
+//! This will create a file called `guides.rs` in the standard directory
+//! [OUT_DIR](https://doc.rust-lang.org/cargo/reference/environment-variables.html) where all
+//! intermediate and output artifacts are placed during compilation.
+//!
+//! You don't need to access this file, just include it in your project using the builder name as an
+//! identifier:
+//!
+//! ```rust#ignore
+//! use pagetop::prelude::*;
+//!
+//! static_files!(guides);
+//! ```
+//!
+//! Also you can get the bundle as a static reference to the generated HashMap resources collection:
+//!
+//! ```rust#ignore
+//! use pagetop::prelude::*;
+//!
+//! static_files!(guides => BUNDLE_GUIDES);
+//! ```
+//!
+//! You can build more than one resources file to compile with your project.
+
+use std::path::Path;
+
+pub struct StaticFilesBundle(static_files::ResourceDir);
+
+impl StaticFilesBundle {
+    pub fn from_dir(dir: &'static str) -> Self {
+        StaticFilesBundle(static_files::resource_dir(dir))
+    }
+
+    pub fn with_name(mut self, name: &'static str) -> Self {
+        self.0.with_generated_filename(
+            Path::new(std::env::var("OUT_DIR").unwrap().as_str()).join(format!("{}.rs", name)),
+        );
+        self.0.with_module_name(format!("bundle_{}", name));
+        self.0.with_generated_fn(name);
+        self
+    }
+
+    pub fn with_filter(mut self, filter: fn(p: &Path) -> bool) -> Self {
+        self.0.with_filter(filter);
+        self
+    }
+
+    pub fn build(self) -> std::io::Result<()> {
+        self.0.build()
+    }
+}