Add obfuscated logger.

unshell-lib/src/logger/mod.rs

@@ -0,0 +1,69 @@
+pub mod macros;
+mod pretty_logger;
+
+use std::time::SystemTime;
+
+pub use pretty_logger::PrettyLogger;
+
+static mut LOGGER: &dyn Logger = &DefaultLogger;
+
+#[derive(Debug)]
+pub enum LogLevel {
+    Debug,
+    Info,
+    Warn,
+    Error,
+}
+
+#[derive(Debug)]
+pub struct Record {
+    log_level: LogLevel,
+    location: String,
+    // line: u32,
+    time: SystemTime,
+    message: String,
+}
+
+pub trait Logger {
+    fn log(&self, log: Record);
+}
+
+struct DefaultLogger;
+
+impl Logger for DefaultLogger {
+    fn log(&self, _: Record) {}
+}
+
+pub fn set_logger_box(logger: Box<dyn Logger>) {
+    unsafe {
+        LOGGER = Box::leak(logger);
+    }
+}
+
+pub fn set_logger(logger: &'static dyn Logger) {
+    unsafe {
+        LOGGER = logger;
+    }
+}
+
+pub fn add_record(log_level: LogLevel, location: String, time: SystemTime, message: String) {
+    logger().log(Record {
+        log_level,
+        location,
+        time,
+        message,
+    });
+}
+
+pub fn logger<'a>() -> &'static dyn Logger {
+    unsafe { LOGGER }
+}
+
+#[allow(dead_code, improper_ctypes_definitions)]
+pub type SetupLogger = extern "C" fn(logger: &'static dyn Logger);
+
+#[unsafe(no_mangle)]
+#[allow(improper_ctypes_definitions)]
+pub extern "C" fn setup_logger(logger: &'static dyn Logger) {
+    set_logger(logger);
+}