1 files changed, 50 insertions, 0 deletions
diff --git a/inc/log.h b/inc/log.h
new file mode 100644
index 0000000..860f041
--- /dev/null
+++ b/inc/log.h
@@ -0,0 +1,50 @@
+/**
+ * Copyright (c) 2020 rxi
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the MIT license. See `log.c` for details.
+ */
+
+#ifndef LOG_H
+#define LOG_H
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <time.h>
+
+#define LOG_VERSION "0.1.0"
+
+typedef struct {
+  va_list ap;
+  const char *fmt;
+  const char *file;
+  const char *func;
+  struct tm *time;
+  void *udata;
+  int line;
+  int level;
+} log_Event;
+
+typedef void (*log_LogFn)(log_Event *ev);
+typedef void (*log_LockFn)(bool lock, void *udata);
+
+enum { LOG_TRACE, LOG_DEBUG, LOG_INFO, LOG_WARN, LOG_ERROR, LOG_FATAL };
+
+#define log_trace(...) log_log(LOG_TRACE, __FILE__, __FUNCTION__, __LINE__, __VA_ARGS__)
+#define log_debug(...) log_log(LOG_DEBUG, __FILE__, __FUNCTION__, __LINE__, __VA_ARGS__)
+#define log_info(...)  log_log(LOG_INFO,  __FILE__, __FUNCTION__, __LINE__, __VA_ARGS__)
+#define log_warn(...)  log_log(LOG_WARN,  __FILE__, __FUNCTION__, __LINE__, __VA_ARGS__)
+#define log_error(...) log_log(LOG_ERROR, __FILE__, __FUNCTION__, __LINE__, __VA_ARGS__)
+#define log_fatal(...) log_log(LOG_FATAL, __FILE__, __FUNCTION__, __LINE__, __VA_ARGS__)
+
+const char* log_level_string(int level);
+void log_set_lock(log_LockFn fn, void *udata);
+void log_set_level(int level);
+void log_set_quiet(bool enable);
+int log_add_callback(log_LogFn fn, void *udata, int level);
+int log_add_fp(FILE *fp, int level);
+
+void log_log(int level, const char *file, const char *func, int line, const char *fmt, ...) __attribute__((format(printf, 5, 6)));
+
+#endif