The Logger system can now be expanded with external logging libraries.

While external loggers can be used, if you are compiling with
--features use_std, then it will default to just printing everything
to the stdout unless a logger is created.

This library can be used without the STD library, however, you will have
to write an external logger.

examples/logger.rs

@@ -0,0 +1,110 @@
+#[macro_use]
+extern crate scribe;
+
+
+
+use scribe::{Levels, Logger, Record};
+
+
+
+pub struct TestLogger
+{
+}
+
+impl TestLogger
+{
+   pub fn start()
+   {
+      match scribe::set_logger(TestLogger::set_logger)
+      {
+         Ok(_) =>
+         {
+            println!("Logger sucessfully set.");
+         }
+
+         Err(error) =>
+         {
+            println!("ERROR:  {}", error);
+         }
+      }
+   }
+
+   pub fn stop()
+   {
+      match scribe::clear_logger()
+      {
+         Ok(_) =>
+         {
+            println!("Logger cleared.");
+         }
+
+         Err(error) =>
+         {
+            println!("ERROR:  {}", error);
+         }
+      }
+   }
+
+   fn set_logger() -> Box<Logger>
+   {
+      let logger: TestLogger;
+
+      logger =
+         TestLogger
+         {
+         };
+
+      Box::new(logger)
+   }
+}
+
+impl Logger for TestLogger
+{
+   fn is_domain_enabled(&self, domain_name: &'static str) -> bool
+   {
+      println!("Domain '{}': {}", domain_name, true);
+      true
+   }
+
+   fn is_level_enabled(&self, lvl: Levels) -> bool
+   {
+      println!("Level '{}': {}", lvl, true);
+      true
+   }
+
+   fn log(&self, record: &Record)
+   {
+      println!("Record: {}", record);
+   }
+}
+
+
+mod temp_mod
+{
+   pub fn print()
+   {
+      info!("Mod test.");
+   }
+}
+
+pub fn main()
+{
+   TestLogger::start();
+
+   temp_mod::print();
+
+   debug!("This seemed to work alright.");
+   debug!(domain: "Temp Domain", "This seemed to work alright.");
+
+   info!("Jason is awesome.");
+   info!(domain: "Temp Domain", "Jason is awesome.");
+
+   warn!("Danger Will Robinson, danger!");
+   warn!(domain: "Temp Domain", "Danger Will Robinson, danger!");
+
+   //error!("There was an error!");
+   //error!(domain: "Temp Domain", "There was an error!");
+
+
+   TestLogger::stop();
+}

examples/logging.rs

@@ -6,7 +6,14 @@ extern crate scribe;
 pub fn main()
 {
    debug!("This seemed to work alright.");
+   debug!(domain: "Temp Domain", "This seemed to work alright.");
+
    info!("Jason is awesome.");
+   info!(domain: "Temp Domain", "Jason is awesome.");
+
    warn!("Danger Will Robinson, danger!");
-   error!("There was an error!");
+   warn!(domain: "Temp Domain", "Danger Will Robinson, danger!");
+
+   //error!("There was an error!");
+   //error!(domain: "Temp Domain", "There was an error!");
 }