content: /*
   * Copyright 2014 Agorava
   *
   * 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.agorava.utils;
  
  import org.agorava.api.service.Preconditions;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.InputStreamReader;
  import java.io.Reader;
  
  /**
   * Utils to deal with Streams.
   *
   * @author Pablo Fernandez
   */
  public class StreamUtils {
  
  
      /* prevent instantiation */
      private StreamUtils() {
      }
  
      /**
       * Returns the stream contents as an UTF-8 encoded string
       *
       * @param is input stream
       * @return string contents
       */
      public static String getStreamContents(InputStream is) {
          Preconditions.checkNotNull(is, "Cannot get String from a null object");
          try {
              final char[] buffer = new char[0x10000];
              StringBuilder out = new StringBuilder();
              Reader in = new InputStreamReader(is, "UTF-8");
              int read;
              do {
                  read = in.read(buffer, 0, buffer.length);
                  if (read > 0) {
                      out.append(buffer, 0, read);
                  }
              } while (read >= 0);
              in.close();
              return out.toString();
          } catch (IOException ioe) {
              throw new IllegalStateException("Error while reading response body", ioe);
          }
      }
  }
  