git-find 0.2.0

A tool (cli & lib) to find local git repositories.
Documentation 
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extern crate git_find;
#[macro_use]
extern crate slog;
extern crate slog_async;
extern crate slog_term;
#[macro_use]
extern crate structopt;

use git_find::*;
use slog::Drain;
//use std::env;
use std::fs;
use std::path::PathBuf;
use structopt::StructOpt;

#[derive(StructOpt, Debug)]
#[structopt(raw(setting = "structopt::clap::AppSettings::ColoredHelp"), author = "davidB")]
struct Cmd {
    // The number of occurences of the `v/verbose` flag
    /// Verbose mode (-v, -vv, -vvv, etc.)
    /// print on stderr
    #[structopt(short = "v", long = "verbose", parse(from_occurrences))]
    verbose: u8,

    /// format of the output
    /// print on stdout
    #[structopt(
        short = "t", long = "tmpl", default_value = "{{ .path.file_name }}\t{{ .path.full }}"
    )]
    format: String,

    /// root directory of the search
    #[structopt(name = "DIR", parse(from_os_str), default_value = ".")]
    dir: PathBuf,
}

fn init_log(level_min: slog::Level) -> slog::Logger {
    let drain = slog_term::TermDecorator::new().build();
    let drain = slog_term::FullFormat::new(drain).build().fuse();
    let drain = slog_async::Async::new(drain)
        .build()
        .filter_level(level_min)
        .fuse();
    let log = slog::Logger::root(drain, o!());
    info!(log, "start"; "version" => env!("CARGO_PKG_VERSION"));
    debug!(log, "debug enabled");
    trace!(log, "trace enabled");
    log
}

fn main() {
    let cmd = Cmd::from_args();

    let log_level =
        slog::Level::from_usize(3 + cmd.verbose as usize).unwrap_or(slog::Level::Warning);
    let log = init_log(log_level);

    let root = fs::canonicalize(&cmd.dir).unwrap();
    let tmpl = &cmd.format;
    let ctx = Ctx { logger: log };
    find_repos(&ctx, &root)
        .iter()
        .map(|r| render(&ctx, tmpl, r))
        .for_each(|s| println!("{}", s));
}