2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Modifications Copyright (c) 2019 Samsung
8 * ================================================================================
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
13 * http://www.apache.org/licenses/LICENSE-2.0
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 * ============LICENSE_END=========================================================
25 import java.io.IOException;
26 import java.io.InputStream;
27 import org.slf4j.Logger;
28 import org.slf4j.LoggerFactory;
32 * File utility class.<br/>
37 * @version ONAP Sep 15, 2017
39 public class FileUtil {
41 private static final Logger logger = LoggerFactory.getLogger(FileUtil.class);
44 * Read the specified resource file and return the contents as a String.
46 * @param fileName Name of the resource file
47 * @return the contents of the resource file as a String
48 * @throws IOException if there is a problem reading the file
50 public static String readResourceFile(String fileName) {
53 stream = getResourceAsStream(fileName);
55 bytes = new byte[stream.available()];
56 if (stream.read(bytes) > 0) {
58 return new String(bytes);
63 } catch (IOException e) {
64 logger.debug("Exception:", e);
70 * Get an InputStream for the resource specified.
72 * @param resourceName Name of resource for which to get InputStream.
73 * @return an InputStream for the resource specified.
74 * @throws IOException If we can't get the InputStream for whatever reason.
76 private static InputStream getResourceAsStream(String resourceName) throws IOException {
77 InputStream stream = FileUtil.class.getClassLoader().getResourceAsStream(resourceName);
79 throw new IOException("Can't access resource '" + resourceName + "'");