LCOV - code coverage report
Current view: top level - src/messages/unsubscribe - mqtt_client_mqtt_unsubscribe_payload.dart (source / functions) Hit Total Coverage
Test: coverage.lcov Lines: 22 22 100.0 %
Date: 2017-10-09 Functions: 0 0 -

          Line data    Source code
       1             : /*
       2             :  * Package : mqtt_client
       3             :  * Author : S. Hamblett <steve.hamblett@linux.com>
       4             :  * Date   : 19/06/2017
       5             :  * Copyright :  S.Hamblett
       6             :  */
       7             : 
       8             : part of mqtt_client;
       9             : 
      10             : /// Class that contains details related to an MQTT Unsubscribe messages payload
      11             : class MqttUnsubscribePayload extends MqttPayload {
      12             :   MqttVariableHeader variableHeader;
      13             :   MqttHeader header;
      14             : 
      15             :   /// The collection of subscriptions.
      16             :   List<String> subscriptions = new List<String>();
      17             : 
      18             :   /// Initializes a new instance of the MqttUnsubscribePayload class.
      19           2 :   MqttUnsubscribePayload();
      20             : 
      21             :   /// Initializes a new instance of the MqttUnsubscribePayload class.
      22             :   MqttUnsubscribePayload.fromByteBuffer(MqttHeader header,
      23             :       MqttUnsubscribeVariableHeader variableHeader,
      24           1 :       MqttByteBuffer payloadStream) {
      25           1 :     this.header = header;
      26           1 :     this.variableHeader = variableHeader;
      27           1 :     readFrom(payloadStream);
      28             :   }
      29             : 
      30             :   /// Writes the payload to the supplied stream.
      31             :   void writeTo(MqttByteBuffer payloadStream) {
      32           2 :     for (String subscription in subscriptions) {
      33           1 :       payloadStream.writeMqttStringM(subscription);
      34             :     }
      35             :   }
      36             : 
      37             :   /// Creates a payload from the specified header stream.
      38             :   void readFrom(MqttByteBuffer payloadStream) {
      39             :     int payloadBytesRead = 0;
      40           5 :     final int payloadLength = header.messageSize - variableHeader.length;
      41             :     // Read all the topics and qos subscriptions from the message payload
      42           1 :     while (payloadBytesRead < payloadLength) {
      43           1 :       final String topic = payloadStream.readMqttStringM();
      44           3 :       payloadBytesRead += topic.length + 2; // +2 = Mqtt string length bytes
      45           1 :       addSubscription(topic);
      46             :     }
      47             :   }
      48             : 
      49             :   /// Gets the length of the payload in bytes when written to a stream.
      50             :   int getWriteLength() {
      51             :     int length = 0;
      52           1 :     final MqttEncoding enc = new MqttEncoding();
      53           2 :     for (String subscription in subscriptions) {
      54           2 :       length += enc.getByteCount(subscription);
      55             :     }
      56             :     return length;
      57             :   }
      58             : 
      59             :   /// Adds a new subscription to the collection of subscriptions.
      60             :   void addSubscription(String topic) {
      61           4 :     subscriptions.add(topic);
      62             :   }
      63             : 
      64             :   /// Clears the subscriptions.
      65             :   void clearSubscriptions() {
      66           2 :     subscriptions.clear();
      67             :   }
      68             : 
      69             :   String toString() {
      70           2 :     final StringBuffer sb = new StringBuffer();
      71           8 :     sb.writeln("Payload: Unsubscription [{${subscriptions.length}}]");
      72           4 :     for (String subscription in subscriptions) {
      73           4 :       sb.writeln("{{ Topic={$subscription}}");
      74             :     }
      75           2 :     return sb.toString();
      76             :   }
      77             : }

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