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//! Command line program to convert a roadmap from a named YAML input
//! file to SVG, written to the standard output.
//!
//! Example
//!
//! ~~~sh
//! roadmap2svg foo.yaml > foo.svg
//! ~~~
//!
//! The command line program mostly exists just to make it easier to
//! test the library crate. It is expected that serious use of the
//! crate will be as a library.
use anyhow::Result;
use roadmap::from_yaml;
use std::fs::File;
use std::io::Read;
use std::path::PathBuf;
use structopt::StructOpt;
const LABEL_WIDTH: usize = 20;
#[derive(Debug, StructOpt)]
#[structopt(
name = "roadmap2dot",
about = "Create a dot graph of a roadmap in YAML"
)]
struct Opt {
// The input filename.
#[structopt(parse(from_os_str))]
filename: PathBuf,
}
fn main() -> Result<()> {
let opt = Opt::from_args();
let mut text = String::new();
let mut f = File::open(opt.filename)?;
f.read_to_string(&mut text)?;
let mut r = from_yaml(&text)?;
r.set_missing_statuses();
println!("{}", r.format_as_dot(LABEL_WIDTH).unwrap());
Ok(())
}
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