[PATCH 1/9] shared: Add skeleton of hfp_at parser

[Marcin Kraglak <marcin.kraglak@tieto.com>]

It will parse AT frames in HFP profile implementation. Use can register
handlers for specified prefixes. Callbacks will be called with one of
hfp_cmd_type. Default handler will have prefix NULL, and type passed
to callback will be always HFP_AT_UNKNOWN.
---
 src/shared/hfp_at.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 src/shared/hfp_at.h | 43 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 93 insertions(+)
 create mode 100644 src/shared/hfp_at.c
 create mode 100644 src/shared/hfp_at.h

diff --git a/src/shared/hfp_at.c b/src/shared/hfp_at.c
new file mode 100644
index 0000000..bd1899b
--- /dev/null
+++ b/src/shared/hfp_at.c
@@ -0,0 +1,50 @@
+/*
+ *
+ *  BlueZ - Bluetooth protocol stack for Linux
+ *
+ *  Copyright (C) 2014  Intel Corporation. All rights reserved.
+ *
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ *  This library 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
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+#include <stdbool.h>
+#include <string.h>
+#include <ctype.h>
+
+#include "src/shared/util.h"
+#include "src/shared/hfp_at.h"
+
+struct hfp_at {
+	const struct hfp_at_handler *cmd_handlers;
+};
+
+struct hfp_at *hfp_at_new(const struct hfp_at_handler *handlers)
+{
+	struct hfp_at *hfp_at;
+
+	hfp_at = new0(struct hfp_at, 1);
+	if (!hfp_at)
+		return NULL;
+
+	hfp_at->cmd_handlers = handlers;
+
+	return hfp_at;
+}
+
+void hfp_at_free(struct hfp_at *hfp_at)
+{
+	free(hfp_at);
+}
diff --git a/src/shared/hfp_at.h b/src/shared/hfp_at.h
new file mode 100644
index 0000000..fe074f2
--- /dev/null
+++ b/src/shared/hfp_at.h
@@ -0,0 +1,43 @@
+/*
+ *
+ *  BlueZ - Bluetooth protocol stack for Linux
+ *
+ *  Copyright (C) 2014  Intel Corporation. All rights reserved.
+ *
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ *  This library 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
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+struct hfp_at;
+
+enum hfp_cmd_type {
+	HFP_AT_READ,
+	HFP_AT_SET,
+	HFP_AT_TEST,
+	HFP_AT_COMMAND,
+	HFP_AT_UNKNOWN
+};
+
+typedef void (*hfp_at_cmd_cb)(struct hfp_at *hfp_at, enum hfp_cmd_type type,
+					const char *at, void *user_data);
+
+struct hfp_at_handler {
+	const char *prefix;
+	hfp_at_cmd_cb cb;
+};
+
+struct hfp_at *hfp_at_new(const struct hfp_at_handler *handlers);
+void hfp_at_free(struct hfp_at *hfp_at);
-- 
1.8.5.3