1 files changed, 4 insertions, 34 deletions
diff --git a/src/org/traccar/protocol/XexunFrameDecoder.java b/src/org/traccar/protocol/XexunFrameDecoder.java
index 39bbc66dc..726ca5e1f 100644
--- a/src/org/traccar/protocol/XexunFrameDecoder.java
+++ b/src/org/traccar/protocol/XexunFrameDecoder.java
@@ -19,40 +19,10 @@ import org.jboss.netty.buffer.ChannelBuffer;
 import org.jboss.netty.channel.Channel;
 import org.jboss.netty.channel.ChannelHandlerContext;
 import org.jboss.netty.handler.codec.frame.FrameDecoder;
+import org.traccar.helper.ChannelBufferTools;
 
 public class XexunFrameDecoder extends FrameDecoder {
 
-    /**
-     * Find string in network buffer
-     */
-    private static Integer find(
-            ChannelBuffer buf,
-            Integer start,
-            Integer length,
-            String subString) {
-
-        int index = start;
-        boolean match;
-
-        for (; index < length; index++) {
-            match = true;
-
-            for (int i = 0; i < subString.length(); i++) {
-                char c = (char) buf.getByte(index + i);
-                if (c != subString.charAt(i)) {
-                    match = false;
-                    break;
-                }
-            }
-
-            if (match) {
-                return index;
-            }
-        }
-
-        return null;
-    }
-
     protected Object decode(
             ChannelHandlerContext ctx,
             Channel channel,
@@ -65,19 +35,19 @@ public class XexunFrameDecoder extends FrameDecoder {
         }
 
         // Find start
-        Integer beginIndex = find(buf, 0, length, "GPRMC");
+        Integer beginIndex = ChannelBufferTools.find(buf, 0, length, "GPRMC");
         if (beginIndex == null) {
             return null;
         }
 
         // Find identifier
-        Integer idIndex = find(buf, beginIndex, length, "imei:");
+        Integer idIndex = ChannelBufferTools.find(buf, beginIndex, length, "imei:");
         if (idIndex == null) {
             return null;
         }
 
         // Find end
-        Integer endIndex = find(buf, idIndex, length, ",");
+        Integer endIndex = ChannelBufferTools.find(buf, idIndex, length, ",");
         if (endIndex == null) {
             return null;
         }