From c0af815eaec66fa340dbb491606efc23e9f661b3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20=C3=85dahl?= <jadahl@gmail.com>
Date: Sat, 23 Nov 2013 12:55:44 +0100
Subject: [PATCH] util: Add logging utilities
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Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
---
 src/libinput-util.c | 25 +++++++++++++++++++++++++
 src/libinput-util.h |  8 ++++++++
 2 files changed, 33 insertions(+)

diff --git a/src/libinput-util.c b/src/libinput-util.c
index 9d9d4dd8..a3534e1c 100644
--- a/src/libinput-util.c
+++ b/src/libinput-util.c
@@ -28,8 +28,33 @@
 
 #include "config.h"
 
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "libinput-util.h"
 #include "libinput-private.h"
 
+static FILE *g_log_file = NULL;
+
+void
+set_logging_enabled(int enabled)
+{
+	g_log_file = enabled ? stdout : NULL;
+}
+
+void
+log_info(const char *format, ...)
+{
+	va_list ap;
+
+	if (g_log_file) {
+		va_start(ap, format);
+		vfprintf(g_log_file, format, ap);
+		va_end(ap);
+	}
+}
+
 void
 list_init(struct list *list)
 {
diff --git a/src/libinput-util.h b/src/libinput-util.h
index 1395106e..a9efb499 100644
--- a/src/libinput-util.h
+++ b/src/libinput-util.h
@@ -23,6 +23,14 @@
 #ifndef LIBINPUT_UTIL_H
 #define LIBINPUT_UTIL_H
 
+#include "libinput.h"
+
+void
+set_logging_enabled(int enabled);
+
+void
+log_info(const char *format, ...);
+
 /*
  * This list data structure is a verbatim copy from wayland-util.h from the
  * Wayland project; except that wl_ prefix has been removed.