1 files changed, 42 insertions, 0 deletions
diff --git a/src/utils/common/msg.h b/src/utils/common/msg.h
new file mode 100644
index 0000000..d2ed57e
--- /dev/null
+++ b/src/utils/common/msg.h
@@ -0,0 +1,42 @@
+/*  Copyright (C) 2022 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <stdio.h>
+
+#define ERROR_		";; ERROR: "
+#define INFO_		";; INFO: "
+#define WARNING_	";; WARNING: "
+#define DEBUG_		";; DEBUG: "
+
+#define ERR(msg, ...)	{ fprintf(stderr, ERROR_   msg "\n", ##__VA_ARGS__); fflush(stderr); }
+#define INFO(msg, ...)	{ fprintf(stdout, INFO_    msg "\n", ##__VA_ARGS__); fflush(stdout); }
+#define WARN(msg, ...)	{ fprintf(stderr, WARNING_ msg "\n", ##__VA_ARGS__); fflush(stderr); }
+#define DBG(msg, ...)	{ msg_debug(DEBUG_         msg "\n", ##__VA_ARGS__); fflush(stdout); }
+
+/*! \brief Enable/disable debugging. */
+int msg_enable_debug(int val);
+
+/*! \brief Print debug message. */
+int msg_debug(const char *fmt, ...);
+
+/*! \brief Debug message for null input. */
+#define DBG_NULL	DBG("%s: null parameter", __func__)
+
+#define ERR2(msg, ...)	{ fprintf(stderr, "error: "   msg "\n", ##__VA_ARGS__); fflush(stderr); }
+#define WARN2(msg, ...)	{ fprintf(stderr, "warning: " msg "\n", ##__VA_ARGS__); fflush(stderr); }
+#define INFO2(msg, ...)	{ fprintf(stdout,             msg "\n", ##__VA_ARGS__); fflush(stdout); }