Implement buffer string finder

1 files changed, 41 insertions, 0 deletions

diff --git a/src/org/traccar/helper/StringFinder.java b/src/org/traccar/helper/StringFinder.java
new file mode 100644
index 000000000..da6a9bdc2
--- /dev/null
+++ b/src/org/traccar/helper/StringFinder.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com)
+ *
+ * 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.helper;
+
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.buffer.ChannelBufferIndexFinder;
+
+import java.nio.charset.Charset;
+
+public class StringFinder implements ChannelBufferIndexFinder {
+
+    private String string;
+
+    public StringFinder(String string) {
+        this.string = string;
+    }
+
+    @Override
+    public boolean find(ChannelBuffer buffer, int guessedIndex) {
+
+        if (buffer.writerIndex() - guessedIndex < string.length()) {
+            return false;
+        }
+
+        return string.equals(buffer.toString(guessedIndex, string.length(), Charset.defaultCharset()));
+    }
+
+}