From 60d746af115de1d4710a60fb9a18cb6775634dcb Mon Sep 17 00:00:00 2001
From: ChUrl <christoph.urlacher@protonmail.com>
Date: Sat, 16 Jul 2022 01:48:09 +0200
Subject: [PATCH] implement logger

---
 c_os/user/lib/Logger.cc | 45 +++++++++++++++++++++++++++++++++
 c_os/user/lib/Logger.h  | 55 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 100 insertions(+)
 create mode 100644 c_os/user/lib/Logger.cc
 create mode 100644 c_os/user/lib/Logger.h

diff --git a/c_os/user/lib/Logger.cc b/c_os/user/lib/Logger.cc
new file mode 100644
index 0000000..77c6e02
--- /dev/null
+++ b/c_os/user/lib/Logger.cc
@@ -0,0 +1,45 @@
+#include "user/lib/Logger.h"
+#include "kernel/Globals.h"
+
+bool Logger::kout_enabled = true;
+bool Logger::serial_enabled = true;
+const Semaphore Logger::sem = Semaphore(1);
+
+Logger::LogLevel Logger::level = Logger::TRACE;
+
+void Logger::log(char* message, CGA::color col) {
+    if (Logger::kout_enabled) {
+        CGA::color old_col = kout.color_fg;
+        kout << fgc(col) << this->name << " :: " << message << fgc(old_col) << endl;
+    }
+    if (Logger::serial_enabled) {
+        serial.write(this->name);
+        serial.write(" :: ");
+        serial.write(message);
+        serial.write("\r\n");
+    }
+}
+
+void Logger::trace(char* message) {
+    if (Logger::level <= Logger::TRACE) {
+        this->log(message, CGA::GREEN);
+    }
+}
+
+void Logger::debug(char* message) {
+    if (Logger::level <= Logger::DEBUG) {
+        this->log(message, CGA::CYAN);
+    }
+}
+
+void Logger::error(char* message) {
+    if (Logger::level <= Logger::ERROR) {
+        this->log(message, CGA::RED);
+    }
+}
+
+void Logger::info(char* message) {
+    if (Logger::level <= Logger::TRACE) {
+        this->log(message, CGA::LIGHT_GREY);
+    }
+}
diff --git a/c_os/user/lib/Logger.h b/c_os/user/lib/Logger.h
new file mode 100644
index 0000000..018ff33
--- /dev/null
+++ b/c_os/user/lib/Logger.h
@@ -0,0 +1,55 @@
+#ifndef __Logger_Include_H_
+#define __Logger_Include_H_
+
+#include "devices/CGA.h"
+#include "lib/Semaphore.h"
+
+class Logger {
+private:
+    Logger(const Logger& copy) = delete;
+
+    char* name;
+    static bool kout_enabled;
+    static bool serial_enabled;
+
+    // TODO: Don't mix logs
+    static const Semaphore sem;
+
+    void log(char* message, CGA::color col);
+
+public:
+    Logger(char* name) : name(name) {}
+
+    enum LogLevel {
+        TRACE = 0,
+        DEBUG = 1,
+        ERROR = 2,
+        INFO = 3
+    };
+    static LogLevel level;
+
+    void trace(char* message);
+    void debug(char* message);
+    void error(char* message);
+    void info(char* message);
+
+    // TODO: Make level change accessible over menu
+    static void set_level(LogLevel level) {
+        Logger::level = level;
+    }
+
+    static void enable_kout() {
+        Logger::kout_enabled = true;
+    }
+    static void disable_kout() {
+        Logger::kout_enabled = false;
+    }
+    static void enable_serial() {
+        Logger::serial_enabled = true;
+    }
+    static void disable_serial() {
+        Logger::serial_enabled = false;
+    }
+};
+
+#endif