| /* |
| * Copyright 2016-present 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 java.util.Calendar; |
| |
| import static org.onosproject.yangutils.utils.UtilConstants.NEW_LINE; |
| |
| /** |
| * Represents the license header for the generated files. |
| */ |
| public final class CopyrightHeader { |
| |
| private static final int EOF = -1; |
| private static final String COPYRIGHT_HEADER_FILE = "CopyrightHeader.txt"; |
| private static final String COPYRIGHTS_FIRST_LINE = "/*\n * Copyright " + Calendar.getInstance().get(Calendar.YEAR) |
| + "-present Open Networking Laboratory\n"; |
| private static final String TEMP_FILE = "temp.txt"; |
| private static ClassLoader classLoader = CopyrightHeader.class.getClassLoader(); |
| |
| private static String copyrightHeader; |
| |
| /** |
| * Creates an instance of copyright header. |
| */ |
| private CopyrightHeader() { |
| } |
| |
| /** |
| * Returns copyright file header. |
| * |
| * @return copyright file header |
| * @throws IOException when fails to parse copyright header |
| */ |
| public static String getCopyrightHeader() throws IOException { |
| |
| if (copyrightHeader == null) { |
| parseCopyrightHeader(); |
| } |
| return copyrightHeader; |
| } |
| |
| /** |
| * Sets the copyright header. |
| * |
| * @param header copyright header |
| */ |
| private static void setCopyrightHeader(String header) { |
| |
| copyrightHeader = header; |
| } |
| |
| /** |
| * parses Copyright to the temporary file. |
| * |
| * @throws IOException when fails to get the copyright header |
| */ |
| private static void parseCopyrightHeader() throws IOException { |
| |
| File temp = new File(TEMP_FILE); |
| |
| try { |
| InputStream stream = classLoader.getResourceAsStream(COPYRIGHT_HEADER_FILE); |
| OutputStream out = new FileOutputStream(temp); |
| |
| int index; |
| out.write(COPYRIGHTS_FIRST_LINE.getBytes()); |
| while ((index = stream.read()) != EOF) { |
| out.write(index); |
| } |
| out.close(); |
| stream.close(); |
| getStringFileContent(temp); |
| setCopyrightHeader(getStringFileContent(temp)); |
| } catch (IOException e) { |
| throw new IOException("failed to parse the Copyright header"); |
| } finally { |
| temp.delete(); |
| } |
| } |
| |
| /** |
| * 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 getStringFileContent(File toAppend) throws IOException { |
| |
| FileReader fileReader = new FileReader(toAppend); |
| BufferedReader bufferReader = new BufferedReader(fileReader); |
| try { |
| StringBuilder stringBuilder = new StringBuilder(); |
| String line = bufferReader.readLine(); |
| |
| while (line != null) { |
| stringBuilder.append(line); |
| stringBuilder.append(NEW_LINE); |
| line = bufferReader.readLine(); |
| } |
| return stringBuilder.toString(); |
| } finally { |
| fileReader.close(); |
| bufferReader.close(); |
| } |
| } |
| } |