hello world example

Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "osui"
+version = "0.0.1"
+edition = "2021"
+
+[lib]
+name = "osui"
+path = "src/lib.rs"
+
+[[bin]]
+name = "osui"
+path = "src/main.rs"
+
+[dependencies]

src/lib.rs

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+use std::io::{self, Write};
+
+pub mod ui;
+
+pub struct Component<T> {
+    pub component: T,
+    pub x: usize,
+    pub y: usize,
+    cleared_frame: String,
+    pub clear_trace: bool,
+}
+
+impl<T: std::fmt::Display> Component<T> {
+    pub fn new(component: T) -> Component<T> {
+        Component {
+            component,
+            x: 0,
+            y: 0,
+            cleared_frame: String::new(),
+            clear_trace: false,
+        }
+    }
+    pub fn render(&mut self) {
+        if self.clear_trace {
+            self.clear();
+        }
+        self.cleared_frame.clear();
+        for (i, d) in format!("{}", self.component).split("\n").enumerate() {
+            print!("\x1B[{};{}H{}", self.y + (i + 1), self.x, d);
+            self.cleared_frame += format!(
+                "\x1B[{};{}H{}",
+                self.y + (i + 1),
+                self.x,
+                " ".repeat(d.len())
+            )
+            .as_str();
+        }
+        flush();
+    }
+    pub fn clear(&self) {
+        print!("{}", self.cleared_frame);
+        flush();
+    }
+}
+
+pub fn clear() {
+    print!("\x1B[2J\x1B[1;1H");
+    flush();
+}
+
+pub fn flush() {
+    io::stdout().flush().unwrap();
+}

src/main.rs

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+use osui::{self, ui};
+
+fn main() {
+    osui::clear();
+    let mut txt = ui::text("hello, world!");
+    txt.render();
+}

src/ui.rs

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+use crate::Component;
+
+pub fn text(text: &str) -> Component<String> {
+    Component::new(text.to_string())
+}