Extract Ansi module

src/lib.rs

@@ -74,6 +74,7 @@
 
 /// # Utility modules to handle common recurring Advent of Code patterns.
 pub mod util {
+    pub mod ansi;
     pub mod grid;
     pub mod hash;
     pub mod iter;

src/main.rs

@@ -1,16 +1,10 @@
+use aoc::util::ansi::*;
 use aoc::util::parse::*;
 use aoc::*;
 use std::env::args;
 use std::time::Instant;
 
 fn main() {
-    // ANSI escape codes
-    const RESET: &str = "\x1b[0m";
-    const BOLD: &str = "\x1b[1m";
-    const RED: &str = "\x1b[31m";
-    const GREEN: &str = "\x1b[32m";
-    const YELLOW: &str = "\x1b[33m";
-
     // Parse command line options
     let (year, day) = match args().nth(1) {
         Some(arg) => {

src/util/ansi.rs

@@ -0,0 +1,14 @@
+//! [ANSI escape codes](https://en.wikipedia.org/wiki/ANSI_escape_code)
+//!
+//! These codes allow command line applications to show colored or styled text in most terminals.
+//! Advanced commands can move the cursor or clear the screen.
+
+pub const RESET: &str = "\x1b[0m";
+pub const BOLD: &str = "\x1b[1m";
+pub const RED: &str = "\x1b[31m";
+pub const GREEN: &str = "\x1b[32m";
+pub const YELLOW: &str = "\x1b[33m";
+pub const BLUE: &str = "\x1b[94m";
+pub const WHITE: &str = "\x1b[97m";
+pub const HOME: &str = "\x1b[H";
+pub const CLEAR: &str = "\x1b[J";