debug.{c,h}: logging functions

src/debug.h

@@ -0,0 +1,54 @@
+/* move.h - debug/log management.
+ *
+ * Copyright (C) 2021 Bruno Raoult ("br")
+ * Licensed under the GNU General Public License v3.0 or later.
+ * Some rights reserved. See COPYING.
+ *
+ * You should have received a copy of the GNU General Public License along with this
+ * program. If not, see <https://www.gnu.org/licenses/gpl-3.0-standalone.htmlL>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later <https://spdx.org/licenses/GPL-3.0-or-later.html>
+ *
+ */
+
+#ifndef DEBUG_H
+#define DEBUG_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#ifdef DEBUG
+
+void debug_init(void);
+
+void debug(bool timestamp, uint32_t indent,
+           const char *src, uint32_t line, const char *, ...);
+
+/* format: func name, no indent, no timestamp
+ * foo:15 val=2
+ */
+#define log(fmt, args...) debug(false, 0, __func__, __LINE__, fmt, ##args)
+
+/* format : func name, indent, no timestamp
+ *   foo:15 val=2
+ */
+#define log_i(i, fmt, args...) debug(false, (i), __func__, __LINE__, fmt, args)
+
+/* format : func name, indent, timestamp
+ *   []foo:15 val=2
+ */
+#define log_it(i, fmt, args...) debug(true, (i), __func__, __LINE__, fmt, args)
+
+/* format: file name, no indent, no timestamp
+ * foo:15 val=2
+ */
+#define log_f(fmt, args...) debug(false, 0, __FILE__, __LINE__, fmt, args)
+
+
+
+#else
+#define log(...)
+#define f
+#endif  /* DEBUG */
+
+#endif  /* DEBUG_H */