initial release

logger.c

@@ -0,0 +1,32 @@
+#include "logger.h"
+
+#include <stdio.h>
+#include <stdarg.h>
+
+
+static char* log_level_str[] = {
+  [LOG_DEBUG]   = "DEBUG",
+  [LOG_INFO]    = "INFO",
+  [LOG_WARNING] = "WARNING",
+  [LOG_ERROR]   = "ERROR",
+};
+
+static int log_level;
+
+
+void set_loglevel(int level)
+{
+  log_level = level;
+}
+
+void logger(int priority, const char *fmt, ...)
+{
+  if (priority < log_level)
+    return;
+
+  printf("%s: ", log_level_str[priority]);
+  va_list args;
+  va_start(args, fmt);
+  vprintf(fmt, args);
+  va_end(args);
+}