leighleighleigh / curly_bits

A struct-enhanced, macro-powered crate, that replaces the {{curly_bits}} in a template file with the desired text content.

curly_bits

A struct-enhanced, macro-powered crate, that replaces the {{curly_bits}} in a template file with the desired text content.
(This crate is for personal use - it's really, really simple... but it does the job!)

---

Motivation

I wanted a simple file templating library that could:

1. Load a template file (HTML, Markdown, etc.) at macro-evaluation/pre-compilation time
2. Extract all the {{curly_bits}} in the file, and generate a single struct containing them
3. Allow me to populate the fields of the struct however I please
4. At runtime, replace the {{curly_bits}} with the desired struct contents.

---

Result

To use this crate, call the load_curly_bits! macro, pointed to a template file path.
Then, it's as easy as working with a struct full of String fields, and printing it.

$ cat ./src/main.rs | head -n14

extern crate curly_bits;
use curly_bits::load_curly_bits;

load_curly_bits!("tests/simple.txt");

fn main() {
    let mut data : SimpleTemplate = SimpleTemplate::default();
    data.greeting = "Hey".to_string();
    data.name = "Dude".to_string();

    println!("#### template ({})\n{}\n", data.template_file(), data.template());
    println!("#### struct\n{:#?}\n", data);
    println!("#### result\n{}\n", data);
}

This results in...

$ cargo run

#### template (tests/simple.txt)
{{greeting}}, {{name}}

#### struct
SimpleTemplate {
    greeting: "Hey",
    name: "Dude",
}

#### result
Hey, Dude