build.rs/src/main.rs

use std::env;
use std::collections::HashMap;
use structopt::StructOpt;
// For UNIX extended metadata

mod log;
mod db;
mod dvcs;
mod cli;
mod task;

fn main() -> Result<(), std::io::Error> {
    let cmd = cli::Cli::from_args();
    let base_dir: String = cmd.basedir().to_str().unwrap().into();

    let tasks = if cmd.tasks.is_empty() {
        task::from_dir(&base_dir).expect("Could not load DB")
    } else {
        task::from_dir_and_list(&base_dir, cmd.tasks).expect("Could not load given tasks")
    };
    
    for (task_name, task) in tasks.iter() {
        println!("TASK: {:?}", task_name);

        let mut context = HashMap::new();
        context.insert("$i18n_task", task_name.as_str());
        log::debug("found_task", Some(&context));
        // Maybe the task has a source we should clone?
        if let Some(source) = &task.source {
            if task.cloned == false {
                if !task.dvcs.clone(source) {
                    context.insert("$i18n_source", &source);
                    log::error("clone_failed", Some(&context));
                    // Skip further processing
                    continue
                }
                // New repo just cloned
                // TODO: submodule and submodule updates
                println!("Downloaded source for {}", task_name); 
                task.run(); 
            }
            // So the cloned repo is already here maybe update?
            // Let's say there was an update and run
            println!("Task {} already exists, run it", task_name);
            task.run(); 
        } else {
            println!("Taks {} doesn't have a source, run it", task_name);
            task.run_once();
        }
    }
    Ok(())
}