From c97c7c03cf447275169338d90f86c9eea9646d63 Mon Sep 17 00:00:00 2001
From: Thadeu Lima de Souza Cascardo <cascardo@cascardo.info>
Date: Wed, 17 Jul 2013 19:05:38 -0300
Subject: [PATCH] Create a very simple printf channel.

This channel simply sends the message subject to standard output.
---
 include/sgp/channels/printf.h | 26 +++++++++++++++++++++++
 src/Makefile.am               |  3 ++-
 src/channels/printf.c         | 39 +++++++++++++++++++++++++++++++++++
 3 files changed, 67 insertions(+), 1 deletion(-)
 create mode 100644 include/sgp/channels/printf.h
 create mode 100644 src/channels/printf.c

diff --git a/include/sgp/channels/printf.h b/include/sgp/channels/printf.h
new file mode 100644
index 0000000..38a1470
--- /dev/null
+++ b/include/sgp/channels/printf.h
@@ -0,0 +1,26 @@
+/*
+ *  Copyright (C) 2013  Thadeu Lima de Souza Cascardo <cascardo@cascardo.info>
+ *
+ *  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, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef _SGP_CHANNELS_PRINTF_H
+#define _SGP_CHANNELS_PRINTF_H
+
+#include <sgp/channel.h>
+
+struct sgp_channel * sgp_printf_channel();
+
+#endif
diff --git a/src/Makefile.am b/src/Makefile.am
index f41ffa1..3f07827 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,3 +1,4 @@
 bin_PROGRAMS = sgp
-sgp_SOURCES = main.c channel.c friend.c group.c send.c share.c msg.c
+sgp_SOURCES = main.c channel.c friend.c group.c send.c share.c msg.c \
+	channels/printf.c
 sgp_CFLAGS = -I../include/
diff --git a/src/channels/printf.c b/src/channels/printf.c
new file mode 100644
index 0000000..707c2a4
--- /dev/null
+++ b/src/channels/printf.c
@@ -0,0 +1,39 @@
+/*
+ *  Copyright (C) 2013  Thadeu Lima de Souza Cascardo <cascardo@cascardo.info>
+ *
+ *  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, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <sgp/channels/printf.h>
+#include <sgp/channel.h>
+#include <sgp/msg.h>
+#include <stdio.h>
+
+static int printf_send(void *data, struct sgp_msg *msg)
+{
+	/* Who is our friend? Should the channel have all the context
+	 * for that? */
+	printf("%s\n", sgp_msg_get_subject(msg));
+	return 0;
+}
+
+static struct sgp_channel printf_channel = {
+	.send = printf_send,
+};
+
+struct sgp_channel * sgp_printf_channel()
+{
+	return &printf_channel;
+}
-- 
2.20.1