New repo setup

src/util/log.h

@@ -0,0 +1,50 @@
+#ifndef LOG_H
+#define LOG_H
+
+#include "charstream.h"
+#include <stdarg.h>
+
+enum class LogLevel
+{
+    DEBUG,
+    INFO,
+    WARNING,
+    ERROR,
+    PANIC
+};
+
+/**
+ * @brief Initialize the logger to output characters to `outStream`.
+ * @param outStream
+ * @return Zero upon success, nonzero upon failure.
+ */
+int logInit(kernel::CharStream *outStream);
+
+/**
+ * @return the stream being used for the kernel log
+ */
+kernel::CharStream *getLogStream();
+
+/**
+ * @brief C-style printf function, accepting commonly used formatting flags.
+ * Outputs to the stream provided to `logInit`. Calls to this function before
+ * a call to `logInit` will result in no data being outputted.
+ *
+ * @param format
+ * @param
+ * @return zero
+ */
+int printf(const char *format, ...);
+
+/**
+ * @brief Logs a formatted message tagged with the log level. Appends a newline
+ * and carriage return after each message, so log messages need not include
+ * them.
+ *
+ * @param level The log level of the message
+ * @param fmt Format string of the log message
+ * @param
+ */
+void kernelLog(LogLevel level, const char *fmt, ...);
+
+#endif