1 files changed, 51 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/StringProtocolEncoder.java b/src/main/java/org/traccar/StringProtocolEncoder.java
new file mode 100644
index 000000000..1945ae174
--- /dev/null
+++ b/src/main/java/org/traccar/StringProtocolEncoder.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2015 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar;
+
+import org.traccar.model.Command;
+
+import java.util.Map;
+
+public abstract class StringProtocolEncoder extends BaseProtocolEncoder {
+
+    public interface ValueFormatter {
+        String formatValue(String key, Object value);
+    }
+
+    protected String formatCommand(Command command, String format, ValueFormatter valueFormatter, String... keys) {
+
+        String result = String.format(format, (Object[]) keys);
+
+        result = result.replaceAll("\\{" + Command.KEY_UNIQUE_ID + "}", getUniqueId(command.getDeviceId()));
+        for (Map.Entry<String, Object> entry : command.getAttributes().entrySet()) {
+            String value = null;
+            if (valueFormatter != null) {
+                value = valueFormatter.formatValue(entry.getKey(), entry.getValue());
+            }
+            if (value == null) {
+                value = entry.getValue().toString();
+            }
+            result = result.replaceAll("\\{" + entry.getKey() + "}", value);
+        }
+
+        return result;
+    }
+
+    protected String formatCommand(Command command, String format, String... keys) {
+        return formatCommand(command, format, null, keys);
+    }
+
+}