Add new mqtt implementation to toolbox

1 files changed, 50 insertions, 0 deletions

diff --git a/mqtt_parser.h b/mqtt_parser.h
new file mode 100644
index 0000000..684cca4
--- /dev/null
+++ b/mqtt_parser.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2022 Mikhail Burakov. This file is part of toolbox.
+ *
+ * toolbox 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.
+ *
+ * toolbox 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 toolbox.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef TOOLBOX_MQTT_PARSER_H_
+#define TOOLBOX_MQTT_PARSER_H_
+
+#include <stdbool.h>
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif  // __cplusplus
+
+enum MqttParserResult {
+  kMqttParserResultFinished = 0,
+  kMqttParserResultWantMore,
+  kMqttParserResultError,
+};
+
+struct MqttParserCallbacks {
+  void (*on_connect_ack)(void* user, bool success);
+  void (*on_subscribe_ack)(void* user, bool success);
+  void (*on_publish)(void* user, const char* topic, size_t topic_size,
+                     const void* payload, size_t payload_size);
+  void (*on_finished)(void* user, size_t offset);
+};
+
+enum MqttParserResult MqttParserParse(
+    const void* buffer, size_t buffer_size,
+    const struct MqttParserCallbacks* callbacks, void* user);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif  // __cplusplus
+
+#endif  // TOOLBOX_MQTT_PARSER_H_