.replit

@@ -1,20 +0,0 @@
-run = "cargo run"
-hidden = ["target"]
-
-[packager]
-language = "rust"
-
-[packager.features]
-packageSearch = true
-
-[languages.rust]
-pattern = "**/*.rs"
-
-[languages.rust.languageServer]
-start = "rust-analyzer"
-
-[nix]
-channel = "stable-22_05"
-
-[gitHubImport]
-requiredFiles = [".replit", "replit.nix"]

Cargo.lock

@@ -45,6 +45,13 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "lambda"
+version = "0.1.0"
+dependencies = [
+ "crossterm",
+]
+
 [[package]]
 name = "libc"
 version = "0.2.137"
@@ -156,13 +163,6 @@ version = "1.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"
 
-[[package]]
-name = "velocity"
-version = "0.1.0"
-dependencies = [
- "crossterm",
-]
-
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"

Cargo.toml

@@ -1,11 +1,11 @@
 [package]
-name = "velocity"
+name = "lambda"
 version = "0.1.0"
 authors = ["Madeline <maddie@spyhoodle.me>"]
 edition = "2021"
 description = "Next generation hackable text editor for nerds"
-homepage = "https://github.com/SpyHoodle/velocity"
-repository = "https://github.com/SpyHoodle/velocity"
+homepage = "https://github.com/SpyHoodle/lambda"
+repository = "https://github.com/SpyHoodle/lambda"
 readme = "README.md"
 include = ["src/*.rs", "Cargo.toml"]
 categories = ["text-editors"]

README.md

@@ -1,29 +1,29 @@
-# λ Velocity
+# λ Lambda
 A next-generation hackable incredibly performant rust text editor for nerds.
-> ⚠️ Velocity is in *very* early stages at the moment. Velocity's goals are still being decided and features may completely change.
+> ⚠️ Lambda is in *very* early stages at the moment. Lambda's goals are still being decided and features may completely change.
 
 ## Overview
-Velocity is a similar text editor to `vim` or `kakoune`, taking some ideas from `xi`.
+Lambda is a similar text editor to `vim` or `kakoune`, taking some ideas from `xi`.
 The main goal is to build the best text editor possible by taking ideas from existing text editors and implementing them in the best possible way.
 
-- Velocity is written in Rust, so it's incredibly fast and logical
+- Lambda is written in Rust, so it's incredibly fast and logical
   - It's also full of comments, so anyone can try and learn what it's doing
-- Velocity is very modular and extensible, so features can be easily added through a variety of methods
+- Lambda is very modular and extensible, so features can be easily added through a variety of methods
   - Need to run a set of keybinds in order? Create a macro
   - Need to create a completely new feature? Just fork it and write it in Rust
-- Velocity is separated between the core and the standard terminal implementation
+- Lambda is separated between the core and the standard terminal implementation
   - This means that anyone can implement their own keybinds, ui, themes, styling, etc.
-  - This also means that there is one standard way for managing the text itself - inside of the Velocity core
-- Velocity is a modal text editor and uses ideas from kakoune, and is designed for the select -> action structure
+  - This also means that there is one standard way for managing the text itself - inside of the lambda core
+- Lambda is a modal text editor and uses ideas from kakoune, and is designed for the select -> action structure
   - Since anyone can implement their own keybinds, it's possible to make a vim implementation that uses the action -> select structure
-- Velocity follows the unix philosophy of "do one thing and do it well"
+- Lambda follows the unix philosophy of "do one thing and do it well"
   - It has no bloated features like splits or tabs
   - It contains the bare necessities and provides a few extra modules
-- Velocity has much better default keybindings than other text editors
+- Lambda has much better default keybindings than other text editors
 
 ## Getting started
 You'll need `cargo` (ideally from `rustup`) and an up to date version of `rust`.
 ```bash
-git clone https://github.com/SpyHoodle/velocity.git # Clone the repositiory
-cargo run # Build and run velocity!
+git clone https://github.com/SpyHoodle/lambda.git # Clone the repositiory
+cargo run # Build and run lambda!
 ```

TODO.md

@@ -0,0 +1,2 @@
+- [ ] Modularise functions
+- [ ] Make components (i.e statusbar) modular

replit.nix

@@ -1,9 +0,0 @@
-{ pkgs }: {
-	deps = [
-		pkgs.rustc
-		pkgs.rustfmt
-		pkgs.cargo
-		pkgs.cargo-edit
-        pkgs.rust-analyzer
-	];
-}

src/core/buffer.rs

@@ -1,37 +0,0 @@
-use std::path::PathBuf;
-
-#[derive(PartialEq)]
-pub enum BufferKind {
-    Scratch,
-    Write,
-    Read,
-}
-
-impl BufferKind {
-    pub fn as_str(&self) -> &str {
-        match self {
-            BufferKind::Scratch => "*scratch*",
-            BufferKind::Write => "write",
-            BufferKind::Read => "read",
-        }
-    }
-}
-
-pub struct Buffer<'a> {
-    pub data: Vec<String>,
-    pub path: PathBuf,
-    pub kind: BufferKind,
-    pub name: &'a str,
-}
-
-impl<'a> Buffer<'a> {
-    pub fn new(path: PathBuf, name: &'a str, kind: BufferKind) -> Self {
-        // Return a buffer
-        Self {
-            data: vec![String::from("")],
-            path,
-            kind,
-            name,
-        }
-    }
-}

src/core/editor.rs

@@ -1,7 +1,3 @@
-use std::path::PathBuf;
-use crate::core::buffer::Buffer;
-use crate::core::buffer::BufferKind;
-
 pub struct Config<'a> {
     pub logo: &'a str,
     pub friendly_name: &'a str,
@@ -11,11 +7,17 @@ impl<'a> Config<'a> {
     pub fn new() -> Self {
         Self {
             logo: "λ",
-            friendly_name: "Velocity",
+            friendly_name: "Lambda",
         }
     }
 }
 
+pub struct Buffer<'a> {
+    pub data: Vec<String>,
+    pub name: &'a str,
+    pub path: &'a str,
+}
+
 #[allow(dead_code)]
 pub enum Mode {
     Normal,
@@ -37,17 +39,20 @@ impl Mode {
 
 pub struct Editor<'a> {
     pub config: Config<'a>,
-    pub buffer: Box<Buffer<'a>>,
+    pub buffer: Buffer<'a>,
     pub cursors: Vec<i32>,
     pub mode: Mode,
 }
 
 impl<'a> Editor<'a> {
-    pub fn new(path: PathBuf, buffer_name: &'a str) -> Self {
-        let buffer_kind = if path.to_str().unwrap().len() > 1 { BufferKind::Write } else { BufferKind::Scratch };
+    pub fn new() -> Self {
         Editor {
             config: Config::new(),
-            buffer: Box::new(Buffer::new(path, buffer_name, buffer_kind)),
+            buffer: Buffer {
+                data: Vec::from([String::from("Hello"), String::from("World")]),
+                name: "[No Name]",
+                path: "/home/spy",
+            },
             cursors: Vec::from([0]),
             mode: Mode::Normal,
         }

src/core/mod.rs

@@ -1,2 +1 @@
 pub mod editor;
-pub mod buffer;

src/main.rs

@@ -1,25 +1,9 @@
 mod core;
 mod terminal;
 mod tui;
-use std::{env, path::PathBuf};
 
 fn main() {
-    // Collect command line arguments
-    let args: Vec<String> = env::args().collect();
-
-    // Collect the file path
-    let file_path = if args.len() > 1 { PathBuf::from(&args[1]) } else { PathBuf::from("") };
-
-    // Collect the file name
-    let file_name = file_path.clone();
-    let file_name = if args.len() > 1 { file_name.file_name().unwrap().to_str().unwrap() } else { "" };
-
-    // Initalise a new editor
-    let velocity = core::editor::Editor::new(file_path, file_name);
-
-    // Initalise a screen
+    let lambda = core::editor::Editor::new();
     let mut screen = terminal::screen::Screen::new().unwrap();
-
-    // Begin lambda
-    tui::ui::start(&mut screen, velocity);
+    tui::ui::Ui::run(&mut screen, lambda);
 }

src/terminal/screen.rs

@@ -11,7 +11,7 @@ pub struct Coords {
     pub y: usize,
 }
 
-// Creating a coordinates from two values
+// Creating a set of coordinates from two values
 impl Coords {
     pub fn from(x: usize, y: usize) -> Self {
         Self { x, y }

src/terminal/tui.rs

@@ -0,0 +1,131 @@
+use crate::core::editor::Editor;
+use crate::terminal::screen::{Coords, Screen};
+use crossterm::style::Stylize;
+use crossterm::event::{read, Event, KeyCode, KeyEvent, KeyModifiers};
+
+// Utils
+fn with_spaces(text: &str) -> String {
+    format!(" {} ", text)
+}
+fn calc_x(screen_width: usize, item_length: usize) -> usize {
+    (screen_width / 2) - (item_length / 2)
+}
+fn longest_element_in_array(elements: Vec<&str>) -> usize {
+    elements.iter().max_by_key(|x: &&&str| x.len()).unwrap().len()
+}
+
+pub fn draw_status(screen: &mut Screen, editor: &Editor) -> Result<(), ()> {
+    // Calculate where to draw the status bar
+    let status_height = screen.size.height - 2;
+
+    // Get the editor logo from the config
+    let editor_logo = &with_spaces(editor.config.logo) as &str;
+    // Get the current mode into a string
+    let mode_string = &with_spaces(editor.mode.as_str()) as &str;
+    // Get the current open file name
+    let file_name = &with_spaces(editor.buffer.name) as &str;
+
+    // Calculate the total length of all the status bar components
+    let total_length = editor_logo.len() + mode_string.len() + file_name.len() + 1;
+
+    // If the screen isn't wide enough, panic as we can't draw the status bar
+    if screen.size.width < total_length {
+        Err(())
+
+    } else {
+        // Write the editor logo
+        screen.write_at(
+            editor_logo.yellow().bold().reverse().to_string(),
+            Coords::from(0, status_height),
+        );
+
+        // Calculate where to write the current mode
+        let x = editor_logo.len() - 1;
+        // Write the current mode
+        screen.write_at(
+            mode_string.green().bold().reverse().to_string(),
+            Coords::from(x, status_height),
+        );
+        // Calculate where to write the file name
+        let x = x + mode_string.len();
+        // Write the current file name
+        screen.write_at(
+            file_name.magenta().bold().reverse().to_string(),
+            Coords::from(x, status_height),
+        );
+
+        // Draw the rest of the status bar
+        let x = x + file_name.len();
+        screen.write_at(
+            " ".repeat(screen.size.width - x).reverse().to_string(),
+            Coords::from(x, status_height),
+        );
+
+        Ok(())
+    }
+}
+
+pub fn draw_welcome(screen: &mut Screen, editor: &Editor) {
+    // The welcome message
+    let title = format!("{} {}", editor.config.logo, editor.config.friendly_name);
+    let message: [&str; 5] = [
+        "Hackable text editor for nerds",
+        "",
+        "Type :help to open the README.md document",
+        "Type :o <file> to open a file and edit",
+        "Type :q! or <C-c> to quit lambda",
+    ];
+
+    // If the screen is big enough, we can draw
+    if screen.size.width > longest_element_in_array(message.to_vec()) && screen.size.height > message.len() + 4 {
+        // The starting y position in the centre of the screen
+        let mut y = (screen.size.height / 2) - (message.len() / 2) - 2;
+
+        // Calculate where to place the title
+        let x = calc_x(screen.size.width, title.len());
+
+        // Write the title to the screen
+        screen.write_at(title.yellow().to_string(), Coords::from(x, y));
+
+        for line in message {
+            // Each line has different width so requires a different x position to center it
+            let x = calc_x(screen.size.width, line.len()) ;
+
+            // For each line we move downwards so increment y
+            y += 1;
+
+            // Write the line to the screen at position (x, y)
+            screen.write_at(line.to_string(), Coords::from(x, y));
+        }
+    }
+}
+
+pub fn start(screen: &mut Screen, editor: Editor) {
+    loop {
+        // Refresh the screen
+        screen.refresh().unwrap();
+
+        // Draw the welcome message
+        draw_welcome(screen, &editor);
+
+        // Draw the status bar
+        draw_status(screen, &editor).unwrap();
+
+        // Check for any key presses
+        match read().unwrap() {
+            Event::Key(KeyEvent {
+                code: KeyCode::Char('q'),
+                modifiers: KeyModifiers::CONTROL,
+                ..
+            }) => break,
+            Event::Key(KeyEvent {
+                code: KeyCode::Char('c'),
+                modifiers: KeyModifiers::CONTROL,
+                ..
+            }) => break,
+            _ => (),
+        }
+    }
+
+    screen.exit();
+}

src/tui/components/statusbar.rs

@@ -1,23 +1,39 @@
-use crossterm::style::Stylize;
+use crate::tui::ui::Component;
+use crate::tui::utils::with_spaces;
 use crate::core::editor::Editor;
 use crate::terminal::screen::{Coords, Screen};
-use crate::tui::utils;
+use crossterm::style::Stylize;
 
-pub fn draw(screen: &mut Screen, editor: &Editor) -> Result<(), ()> {
+pub struct StatusBar<'a> {
+    logo: &'a str,
+    mode: &'a str,
+    file_name: &'a str,
+}
+
+impl<'a> StatusBar<'a> {
+    pub fn new(editor: &'a Editor<'a>) -> Self {
+        Self {
+            logo: editor.config.logo,
+            mode: editor.mode.as_str(),
+            file_name: editor.buffer.name,
+        }
+    }
+}
+
+impl<'a> Component for StatusBar<'a> {
+    fn draw(&self, screen: &mut Screen, editor: &Editor) -> Result<(), ()> {
         // Calculate where to draw the status bar
         let status_height = screen.size.height - 2;
 
         // Get the editor logo from the config
-    let editor_logo = &utils::with_spaces(editor.config.logo) as &str;
+        let editor_logo = &with_spaces(editor.config.logo) as &str;
         // Get the current mode into a string
-    let mode_string = &utils::with_spaces(editor.mode.as_str()) as &str;
+        let mode_string = &with_spaces(editor.mode.as_str()) as &str;
         // Get the current open file name
-    let file_name = &utils::with_spaces(editor.buffer.name) as &str;
-    // Get the current buffer kind
-    let buffer_kind = &utils::with_spaces(editor.buffer.kind.as_str()) as &str;
+        let file_name = &with_spaces(editor.buffer.name) as &str;
 
         // Calculate the total length of all the status bar components
-    let total_length = editor_logo.len() + mode_string.len() + file_name.len() + buffer_kind.len() + 1;
+        let total_length = editor_logo.len() + mode_string.len() + file_name.len() + 1;
 
         // If the screen isn't wide enough, panic as we can't draw the status bar
         if screen.size.width < total_length {
@@ -37,22 +53,16 @@ pub fn draw(screen: &mut Screen, editor: &Editor) -> Result<(), ()> {
                 mode_string.green().bold().reverse().to_string(),
                 Coords::from(x, status_height),
             );
-
+            // Calculate where to write the file name
             let x = x + mode_string.len();
-        // Draws the file name if it has a length, if not then it will draw the buffer type
-        if editor.buffer.name.len() > 0 {
+            // Write the current file name
             screen.write_at(
                 file_name.magenta().bold().reverse().to_string(),
                 Coords::from(x, status_height),
             );
-        } else {
-            screen.write_at(
-                buffer_kind.blue().bold().reverse().to_string(),
-                Coords::from(x, status_height),
-            );
-        }
 
-        let x = if editor.buffer.name.len() > 0 { x + file_name.len() } else { x + buffer_kind.len() };
+            // Draw the rest of the status bar
+            let x = x + file_name.len();
             screen.write_at(
                 " ".repeat(screen.size.width - x).reverse().to_string(),
                 Coords::from(x, status_height),
@@ -60,4 +70,5 @@ pub fn draw(screen: &mut Screen, editor: &Editor) -> Result<(), ()> {
 
             Ok(())
         }
+    }
 }

src/tui/components/welcome.rs

@@ -1,9 +1,9 @@
-use crossterm::style::Stylize;
+use crate::tui::utils;
 use crate::core::editor::Editor;
 use crate::terminal::screen::{Coords, Screen};
-use crate::tui::utils;
+use crossterm::style::Stylize;
 
-pub fn draw(screen: &mut Screen, editor: &Editor) {
+pub fn draw_welcome(screen: &mut Screen, editor: &Editor) {
     // The welcome message
     let title = format!("{} {}", editor.config.logo, editor.config.friendly_name);
     let message: [&str; 5] = [
@@ -11,7 +11,7 @@ pub fn draw(screen: &mut Screen, editor: &Editor) {
         "",
         "Type :help to open the README.md document",
         "Type :o <file> to open a file and edit",
-        "Type :q! or <C-c> to quit the editor",
+        "Type :q! or <C-c> to quit lambda",
     ];
 
     // If the screen is big enough, we can draw
@@ -20,14 +20,14 @@ pub fn draw(screen: &mut Screen, editor: &Editor) {
         let mut y = (screen.size.height / 2) - (message.len() / 2) - 2;
 
         // Calculate where to place the title
-        let x = utils::calc_centred_x(screen.size.width, title.len());
+        let x = utils::calc_centered_x(screen.size.width, title.len());
 
         // Write the title to the screen
         screen.write_at(title.yellow().to_string(), Coords::from(x, y));
 
         for line in message {
             // Each line has different width so requires a different x position to center it
-            let x = utils::calc_centred_x(screen.size.width, line.len()) ;
+            let x = utils::calc_centered_x(screen.size.width, line.len()) ;
 
             // For each line we move downwards so increment y
             y += 1;
@@ -37,3 +37,4 @@ pub fn draw(screen: &mut Screen, editor: &Editor) {
         }
     }
 }
+

src/tui/mod.rs

@@ -1,3 +1,3 @@
 pub mod ui;
-pub mod utils;
-mod components;
+pub mod components;
+mod utils;

src/tui/ui.rs

@@ -1,22 +1,43 @@
+use crossterm::event::{read, Event, KeyCode, KeyEvent, KeyModifiers};
 use crate::core::editor::Editor;
-use crate::core::buffer::BufferKind;
 use crate::terminal::screen::Screen;
 use crate::tui::components;
-use crossterm::event::{read, Event, KeyCode, KeyEvent, KeyModifiers};
 
-pub fn start(screen: &mut Screen, editor: Editor) {
-    // Main screen loop, runs until the program exits
+pub trait Component {
+    fn draw(&self, screen: &mut Screen, editor: &Editor) -> Result<(), ()>;
+}
+
+struct Components {
+    bottom: Vec<Box<dyn Component>>,
+}
+
+pub struct Ui {
+    components: Components,
+}
+
+impl Ui {
+    pub fn new<'a>(editor: &'a Editor<'a>) -> Self {
+        let status_bar = components::statusbar::StatusBar::new(editor);
+
+        Self {
+            components: Components { bottom: vec![Box::new(status_bar)]},
+        }
+    }
+
+    pub fn draw(&self) {
+
+    }
+
+    pub fn run(screen: &mut Screen, editor: Editor) {
         loop {
             // Refresh the screen
             screen.refresh().unwrap();
 
-        // Draw the welcome message only if it is a scratch buffer
-        if editor.buffer.kind == BufferKind::Scratch {
-            components::welcome::draw(screen, &editor);
-        };
+            // Generate all the UI elements
+            let components = Ui::new(&editor);
 
-        // Draw the status bar
-        components::statusbar::draw(screen, &editor).unwrap();
+            // Draw all UI elements
+            components.draw();
 
             // Check for any key presses
             match read().unwrap() {
@@ -35,4 +56,5 @@ pub fn start(screen: &mut Screen, editor: Editor) {
         }
 
         screen.exit();
+    }
 }

src/tui/utils.rs

@@ -3,12 +3,12 @@ pub fn with_spaces(text: &str) -> String {
     format!(" {} ", text)
 }
 
-// Calculates the starting x coordinate for centred text
-pub fn calc_centred_x(screen_width: usize, item_length: usize) -> usize {
+// Calculates the x coordinate for centered text
+pub fn calc_centered_x(screen_width: usize, item_length: usize) -> usize {
     (screen_width / 2) - (item_length / 2)
 }
 
-// Returns the longest element in a vector
+// Finds and returns the longest element in a vector
 pub fn longest_element_in_vec(elements: Vec<&str>) -> usize {
     elements.iter().max_by_key(|x: &&&str| x.len()).unwrap().len()
 }