chore: support colorful log

Cargo.toml

@@ -6,7 +6,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [features]
-default = ["arch_riscv64", "board_virt"]
+default = ["arch_riscv64", "board_virt", "log_color"]
 arch_riscv64 = []
 arch_riscv32 = []
 arch_arm = []
@@ -14,6 +14,7 @@ arch_x86 = []
 board_default = []
 board_virt = []
 board_thead = []
+log_color = []
 
 [profile.dev]
 panic = "abort"

src/logging.rs

@@ -14,8 +14,27 @@ impl Log for SimpleLogger {
             return;
         }
 
+        let (color_prefix, color_reset) = if cfg!(feature = "log_color") {
+            let color = match record.level() {
+                log::Level::Error => "\x1b[31m",
+                log::Level::Warn => "\x1b[33m",
+                log::Level::Info => "\x1b[32m",
+                log::Level::Debug => "\x1b[34m",
+                log::Level::Trace => "\x1b[37m",
+            };
+            (color, "\x1b[0m")
+        } else {
+            ("", "")
+        };
+
         RawConsole
-            .write_fmt(format_args!("[{}] {}\n", record.level(), record.args()))
+            .write_fmt(format_args!(
+                "{}[{}] {}{}\n",
+                color_prefix,
+                record.level(),
+                record.args(),
+                color_reset
+            ))
             .unwrap();
     }