Add optional debugging code

Compile *without* -DNDEBUG. The environment variable PIANOBAR_DEBUG
accepts a bitfield which enables (1) network (2) audio (4) UI debug
messages.

1 files changed, 29 insertions, 0 deletions

diff --git a/src/debug.c b/src/debug.c
new file mode 100644
index 0000000..95ca817
--- /dev/null
+++ b/src/debug.c
@@ -0,0 +1,29 @@
+/*
+Copyright (c) 2008-2018
+	Lars-Dominik Braun <lars@6xq.net>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include "debug.h"
+
+#ifdef HAVE_DEBUGLOG
+unsigned int debug = 0;
+#endif
+