aarch64/fb: add new rust user program `fantastic_text`

user/src/bin/fantastic_text.rs

@@ -0,0 +1,43 @@
+#![no_std]
+#![no_main]
+
+#[macro_use]
+extern crate ucore_ulib;
+
+macro_rules! color_text {
+    ($text:expr, $color:expr) => {{
+        format_args!("\x1b[{}m{}\x1b[0m", $color, $text)
+    }};
+}
+
+// IMPORTANT: Must define main() like this
+#[no_mangle]
+pub fn main() {
+    println!(
+        "{}{}{}{}{} {}{}{}{} {}{}{}{}{}{}",
+        color_text!("H", 31),
+        color_text!("e", 32),
+        color_text!("l", 33),
+        color_text!("l", 34),
+        color_text!("o", 35),
+        color_text!("R", 36),
+        color_text!("u", 37),
+        color_text!("s", 90),
+        color_text!("t", 91),
+        color_text!("u", 92),
+        color_text!("C", 93),
+        color_text!("o", 94),
+        color_text!("r", 95),
+        color_text!("e", 96),
+        color_text!("!", 97),
+    );
+
+    let text = "reguler \x1b[4munderline\x1b[24m \x1b[7mreverse\x1b[27m \x1b[9mstrikethrough\x1b[29m";
+    println!("\x1b[47m{}\x1b[0m", color_text!(text, 30));
+    for i in 31..38 {
+        println!("{}", color_text!(text, i));
+    }
+    for i in 90..98 {
+        println!("{}", color_text!(text, i));
+    }
+}