Move formatter to separate module

src/formatter.rs

@@ -0,0 +1,22 @@
+//! Functions related to formatting and printing lines from a `Tokenizer`.
+
+use std::io::BufRead;
+
+use ansi_term::Colour;
+
+use tokenizer::Tokenizer;
+use types::LineType;
+
+/// Print a token stream to an ANSI terminal.
+pub fn print_lines<R>(tokenizer: &mut Tokenizer<R>) where R: BufRead {
+    while let Some(token) = tokenizer.next() {
+        match token {
+            LineType::Empty => println!(""),
+            LineType::Title(_) => debug!("Ignoring title"),
+            LineType::Description(text) => println!("  {}", text),
+            LineType::ExampleText(text) => println!("  {}", Colour::Green.paint(format!("- {}", text))),
+            LineType::ExampleCode(text) => println!("  {}", Colour::Cyan.paint(format!("  {}", text))),
+            LineType::Other(text) => debug!("Unknown line type: {:?}", text),
+        }
+    }
+}

src/main.rs

@@ -10,22 +10,22 @@ extern crate tempdir;
 extern crate curl;
 extern crate rustc_serialize;
 
-use std::io::{BufRead, BufReader};
+use std::io::BufReader;
 use std::fs::File;
 use std::process;
 
-use ansi_term::Colour;
 use docopt::Docopt;
 
 mod types;
 mod tokenizer;
+mod formatter;
 mod updater;
 mod error;
 
-use types::LineType;
 use tokenizer::Tokenizer;
 use updater::Updater;
 use error::TldrError;
+use formatter::print_lines;
 
 
 const USAGE: &'static str = "
@@ -83,21 +83,6 @@ fn get_file_reader(filepath: &str) -> Result<BufReader<File>, String> {
 }
 
 
-/// Print a token stream to an ANSI terminal.
-fn print_lines<R>(tokenizer: &mut Tokenizer<R>) where R: BufRead {
-    while let Some(token) = tokenizer.next() {
-        match token {
-            LineType::Empty => println!(""),
-            LineType::Title(_) => debug!("Ignoring title"),
-            LineType::Description(text) => println!("  {}", text),
-            LineType::ExampleText(text) => println!("  {}", Colour::Green.paint(format!("- {}", text))),
-            LineType::ExampleCode(text) => println!("  {}", Colour::Cyan.paint(format!("  {}", text))),
-            LineType::Other(text) => debug!("Unknown line type: {:?}", text),
-        }
-    }
-}
-
-
 #[cfg(feature = "logging")]
 fn init_log() {
     env_logger::init().unwrap();