[ONOS-3906] Utils for translator implementation.
Change-Id: I1d3617e81c332b6f0194a4b4b9e373c4297a6c67
diff --git a/src/main/java/org/onosproject/yangutils/utils/io/impl/CopyrightHeader.java b/src/main/java/org/onosproject/yangutils/utils/io/impl/CopyrightHeader.java
new file mode 100644
index 0000000..8b7e732
--- /dev/null
+++ b/src/main/java/org/onosproject/yangutils/utils/io/impl/CopyrightHeader.java
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2016 Open Networking Laboratory
+ *
+ * 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.onosproject.yangutils.utils.io.impl;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+import static org.slf4j.LoggerFactory.getLogger;
+import org.slf4j.Logger;
+
+/**
+ * Provides the license header for the generated files.
+ */
+public final class CopyrightHeader {
+
+ private static final Logger log = getLogger(CopyrightHeader.class);
+ private static final int NULL = -1;
+ private static ClassLoader classLoader = CopyrightHeader.class.getClassLoader();
+
+ /**
+ * Default constructor.
+ */
+ private CopyrightHeader() {
+ }
+
+ /**
+ * Returns Copyright file header.
+ *
+ * @return Copyright file header
+ */
+ public static String getCopyrightHeader() {
+ return parseOnosHeader();
+ }
+
+ /**
+ * parse Copyright to the temporary file.
+ *
+ * @param file generated file
+ * @param stream input stream
+ */
+ private static String parseOnosHeader() {
+
+ File temp = new File("temp.txt");
+
+ try {
+ InputStream stream = classLoader.getResourceAsStream("CopyrightHeader.txt");
+ OutputStream out = new FileOutputStream(temp);
+ int index;
+ while ((index = stream.read()) != NULL) {
+ out.write(index);
+ }
+ out.close();
+ return convertToString(temp.toString());
+ } catch (IOException e) {
+ log.info("Failed to insert onos header in files.");
+ } finally {
+ temp.delete();
+ }
+ return "";
+ }
+
+ /**
+ * Converts it to string.
+ *
+ * @param toAppend file to be converted.
+ * @return string of file.
+ * @throws IOException when fails to convert to string
+ */
+ private static String convertToString(String toAppend) throws IOException {
+ BufferedReader bufferReader = new BufferedReader(new FileReader(toAppend));
+ try {
+ StringBuilder stringBuilder = new StringBuilder();
+ String line = bufferReader.readLine();
+
+ while (line != null) {
+ stringBuilder.append(line);
+ stringBuilder.append("\n");
+ line = bufferReader.readLine();
+ }
+ return stringBuilder.toString();
+ } finally {
+ bufferReader.close();
+ }
+ }
+}