content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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
   *
   *    https://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.apache.bigtop.manager.common.utils;
  
  import lombok.AccessLevel;
  import lombok.NoArgsConstructor;
  import lombok.extern.slf4j.Slf4j;
  
  import java.io.ByteArrayOutputStream;
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileOutputStream;
  import java.io.OutputStream;
  import java.nio.charset.StandardCharsets;
  
  @Slf4j
  @NoArgsConstructor(access = AccessLevel.PRIVATE)
  public class FileUtils {
  
      public static String readFile2Str(String filename) {
          File file = new File(filename);
          return readFile2Str(file);
      }
  
      /**
       * Get Content
       *
       * @param file input file
       * @return string of input stream
       */
      public static String readFile2Str(File file) {
          try (FileInputStream inputStream = new FileInputStream(file)) {
              ByteArrayOutputStream output = new ByteArrayOutputStream();
              byte[] buffer = new byte[1024];
              int length;
              while ((length = inputStream.read(buffer)) != -1) {
                  output.write(buffer, 0, length);
              }
              return output.toString(StandardCharsets.UTF_8);
          } catch (Exception e) {
              log.error(e.getMessage(), e);
              throw new RuntimeException(e);
          }
      }
  
      public static void writeStr2File(String filename, String content) {
          File file = new File(filename);
          writeStr2File(file, content);
      }
  
      public static void writeStr2File(File file, String content) {
          try (OutputStream outputStream = new FileOutputStream(file)) {
              byte[] bytes = content.getBytes(StandardCharsets.UTF_8);
              outputStream.write(bytes);
          } catch (Exception e) {
              log.error(e.getMessage(), e);
              throw new RuntimeException(e);
          }
      }
  }
  