= Embed-dir for Rust

crate.io package... https://crates.io/crates/embed_dir/0.1.0

You have the great macro include_bytes! in Rust

But sometimes is not enough. You could need to embed several files, generally in a folder.

In order to automate it, this simple and small tool generates code for you.

[NOTE] Perhaps in the future this tool could be integrated on compilation process running build

== Running the tool

If you run the program without params or incorrect params number

Simple program to generate code to embed files recursivily from a chosen folder.

It will generate a source file with code to embed the files on folder.

More info:  https://github.com/jleahred/embed_dir

Usage:
    embed_dir  <origin-folder>  <destiny-file>

where:
    origin-folder   string is the path to the folder containing the files to embed
    destiny-file    string is output filename (without .rs extension)


example:

embed_dir src/public src/embed.rs

=== Example on own project directory

cargo run test_folder src/test/pr.rs

== Generated code

This will generate a file per directory as:

[source, rust]

// autogenerated embed_dir on ...

macrorules! gengetincludesbytes{ ($relpath:expr, $($file:expr),+) => { pub fn get(filename: &str) -> Option<&'static [u8]> { match filename { $( $file => Some(includebytes!(concat!($rel_path, $file))), )+ _ => None, } } } }

gengetincludesbytes!("../../testfolder", "README.adoc", "Cargo.toml", "pr/README.adoc"

);

The first string indicates the relative position to files from generated source file.

[source, rust]

"../../http_static/",

Next strings are the files (they can be nested on folders) included.

== Using the code

Quite simple and direct, just call get on the created module with the file name.

[source, rust]

match super::http_static2::get("index.html") {
    Some(content) => content,
    None => &[] as &'static [u8],

}