Improve the error handling

[rbdr/blog] / src / generator / html.rs

use std::fs::write;
use std::io::{Error, ErrorKind::Other, Result};
use std::path::PathBuf;
use crate::template::{find, parse, TemplateContext};

const FILENAME: &str = "index.html";

pub fn generate(_: &PathBuf, template_directory: &PathBuf, target: &PathBuf, context: &TemplateContext) -> Result<()> {
    match find(template_directory, FILENAME) {
        Some(template) => {
            let parsed_template = parse(&template)
                .ok_or_else(|| Error::new(Other, "Unable to parse HTML template"))?;
            let rendered_template = parsed_template.render(context)?;
            let location = target.join(FILENAME);
            write(location, rendered_template)?;
        },
        None => {}
    }
    Ok(())
}