common: Logging rework

Use common logging macros for a consistent output. A logging domain
needs to be set in a Makefile first (the _LOG_DOMAIN define).

Heavy debugging output is guarded by the __DEBUG_INTERNAL define
and omitted by default.

Logging severity is controlled by the TUXCMD_DEBUG env. var,
typically set by the tuxcmd process itself.

1 files changed, 37 insertions, 0 deletions

diff --git a/common/logutils.c b/common/logutils.c
new file mode 100644
index 0000000..1913954
--- /dev/null
+++ b/common/logutils.c
@@ -0,0 +1,37 @@
+/*  Tux Commander VFS: Logging utilities
+ *  Copyright (C) 2023-2024 Tomas Bzatek <tbzatek@users.sourceforge.net>
+ *   Check for updates on tuxcmd.sourceforge.net
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <string.h>
+#include <glib.h>
+
+#include "logutils.h"
+
+int _log_level = LOG_NOTICE;
+
+
+void
+log_init (void)
+{
+  char *d;
+
+  d = getenv ("TUXCMD_DEBUG");
+  if (d && strlen (d) > 0)
+    /* TODO: might wanna distinguish log level value in the future */
+    _log_level = LOG_DEBUG;
+}