Add segment structure and logic

src/char.rs

@@ -1,20 +0,0 @@
-use std::env;
-use ansi_term::Color;
-
-pub fn display() {
-  let PROMPT_CHAR = "➜ ";
-  let COLOR_SUCCESS = Color::Green;
-  let COLOR_FAILURE = Color::Red;
-
-  let color = match env::var_os("status") {
-    None | "0" => COLOR_SUCCESS,
-    _ => COLOR_FAILURE
-  };
-
-  // let color = match env::var("status") {
-  //   Ok("0") | _ => COLOR_SUCCESS,
-  //   Ok("1") => COLOR_FAILURE
-  // };
-
-  print!("{}", color.paint(PROMPT_CHAR));
-}

src/main.rs

@@ -1,9 +1,19 @@
 #[macro_use]
 extern crate clap;
-use clap::App;
-use std::io;
+extern crate ansi_term;
 
-mod char;
+mod modules;
+mod print;
+
+use ansi_term::Style;
+use clap::App;
+
+pub struct Segment {
+    style: Style,
+    value: String,
+    prefix: Option<Box<Segment>>,
+    suffix: Option<Box<Segment>>,
+}
 
 fn main() {
     App::new("Starship")
@@ -12,9 +22,8 @@ fn main() {
         .version(crate_version!())
         // pull the authors from Cargo.toml
         .author(crate_authors!())
+        .after_help("https://github.com/matchai/starship")
         .get_matches();
 
-    prompt::char();
-    // let stdout = io::stdout();
-    // let mut handle = io::BufWriter::new(stdout);
+    print::prompt();
 }

src/modules/char.rs

@@ -0,0 +1,34 @@
+use crate::Segment;
+use ansi_term::{Color, Style};
+use std::env;
+
+pub fn segment() -> Segment {
+    const PROMPT_CHAR: &str = "➜ ";
+    const COLOR_SUCCESS: Color = Color::Green;
+    const COLOR_FAILURE: Color = Color::Red;
+
+    let default_prefix = Segment {
+        value: String::from("testPrefix"),
+        style: Style::default(),
+        prefix: None,
+        suffix: None,
+    };
+
+    let color;
+    if let Ok(status) = env::var("status") {
+        if status == "0" {
+            color = COLOR_SUCCESS;
+        } else {
+            color = COLOR_FAILURE;
+        }
+    } else {
+        panic!("No status environment variable provided");
+    }
+
+    Segment {
+        prefix: Some(Box::new(default_prefix)),
+        value: String::from(PROMPT_CHAR),
+        style: Style::new().fg(color),
+        suffix: None,
+    }
+}

src/modules/mod.rs

@@ -0,0 +1,11 @@
+mod char;
+
+use crate::Segment;
+
+pub fn handle(module: &str) -> Segment {
+    match module {
+        "char" => char::segment(),
+
+        _ => panic!("Unknown module: {}", module),
+    }
+}

src/print.rs

@@ -0,0 +1,30 @@
+use crate::modules;
+use crate::Segment;
+
+pub fn prompt() {
+    let default_prompt = vec!["char"];
+
+    for module in default_prompt {
+        let segment = modules::handle(module);
+        print_segment(segment);
+    }
+}
+
+fn print_segment(segment: Segment) {
+    let Segment {
+        prefix,
+        value,
+        style,
+        suffix,
+    } = segment;
+
+    if let Some(prefix) = prefix {
+        print_segment(*prefix);
+    }
+
+    print!("{}", style.paint(value));
+
+    if let Some(suffix) = suffix {
+        print_segment(*suffix);
+    }
+}