metro

Metro is a crate for creating and rendering graphs similar to git log --graph.

Usage

Add this to your Cargo.toml:

[dependencies]
metro = "0.1"

Releases

Release notes are available in the repo at CHANGELOG.md.

Example Output

The code for creating the following example, can be found after the graph.

* Station 1
* Station 2
* Station 3
|\
| * Station 4
| |\
| * | Station 5
| | * Station 6
* | | Station 7
| * | Station 8
| | * Station 9
| | |\
| | | |\
| | | | | Station 10 (Detached)
| |_|_|/
|/| | |
| | | * Station 11
| " | |
|  / /
* | | Station 12
| * | Station 13
| | * Station 14
| |/
|/|
| * Station 15
| "
* Station 16

Example Using Metro

The following example outputs the graph above.

use metro::Metro;

let mut metro = Metro::new();

let mut track1 = metro.new_track();
track1.add_station("Station 1");
track1.add_station("Station 2");
track1.add_station("Station 3");

let mut track2 = track1.split();
track2.add_station("Station 4");

let mut track3 = track2.split();
track2.add_station("Station 5");
track3.add_station("Station 6");

track1.add_station("Station 7");
track2.add_station("Station 8");
track3.add_station("Station 9");

let mut track4 = track3.split();
let track5 = track4.split();

metro.add_station("Station 10 (Detached)");

track5.join(&track1);

track4.add_station("Station 11");

track2.stop();

track1.add_station("Station 12");
track3.add_station("Station 13");
track4.add_station("Station 14");

track4.join(&track1);

track3.add_station("Station 15");

track3.stop();

track1.add_station("Station 16");

let string = metro.to_string().unwrap();

println!("{}", string);

Example Using Event

The following example outputs the graph above.

use metro::Event::*;

let events = [
    Station(0, "Station 1"),
    Station(0, "Station 2"),
    Station(0, "Station 3"),
    SplitTrack(0, 1),
    Station(1, "Station 4"),
    SplitTrack(1, 2),
    Station(1, "Station 5"),
    Station(2, "Station 6"),
    Station(0, "Station 7"),
    Station(1, "Station 8"),
    Station(2, "Station 9"),
    SplitTrack(2, 3),
    SplitTrack(3, 4),
    Station(5, "Station 10 (Detached)"),
    JoinTrack(4, 0),
    Station(3, "Station 11"),
    StopTrack(1),
    Station(0, "Station 12"),
    Station(2, "Station 13"),
    Station(3, "Station 14"),
    JoinTrack(3, 0),
    Station(2, "Station 15"),
    StopTrack(2),
    Station(0, "Station 16"),
];

let string = metro::to_string(&events).unwrap();

println!("{}", string);