content: /*
   * Copyright (c) 2013. wyouflf (wyouflf@gmail.com)
   *
   * 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 com.lidroid.xutils.http.client.entity;
  
  import com.lidroid.xutils.http.callback.RequestCallBackHandler;
  import com.lidroid.xutils.util.IOUtils;
  import org.apache.http.entity.AbstractHttpEntity;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.InterruptedIOException;
  import java.io.OutputStream;
  
  /**
   * Created with IntelliJ IDEA.
   * User: wyouflf
   * Date: 13-6-28
   * Time: 上午12:14
   */
  public class InputStreamUploadEntity extends AbstractHttpEntity implements UploadEntity {
  
      private final static int BUFFER_SIZE = 2048;
  
      private final InputStream content;
      private final long length;
  
      public InputStreamUploadEntity(final InputStream inputStream, long length) {
          super();
          if (inputStream == null) {
              throw new IllegalArgumentException("Source input stream may not be null");
          }
          this.content = inputStream;
          this.length = length;
      }
  
      public boolean isRepeatable() {
          return false;
      }
  
      public long getContentLength() {
          return this.length;
      }
  
      public InputStream getContent() throws IOException {
          return this.content;
      }
  
      private long uploadedSize = 0;
  
      public void writeTo(final OutputStream outStream) throws IOException {
          if (outStream == null) {
              throw new IllegalArgumentException("Output stream may not be null");
          }
          InputStream inStream = this.content;
          try {
              byte[] buffer = new byte[BUFFER_SIZE];
              int l;
              if (this.length < 0) {
                  // consume until EOF
                  while ((l = inStream.read(buffer)) != -1) {
                      outStream.write(buffer, 0, l);
                      uploadedSize += l;
                      if (callBackHandler != null) {
                          if (!callBackHandler.updateProgress(uploadedSize + 1, uploadedSize, false)) {
                              throw new InterruptedIOException("cancel");
                          }
                      }
                  }
              } else {
                  // consume no more than length
                  long remaining = this.length;
                  while (remaining > 0) {
                      l = inStream.read(buffer, 0, (int) Math.min(BUFFER_SIZE, remaining));
                      if (l == -1) {
                          break;
                      }
                      outStream.write(buffer, 0, l);
                      remaining -= l;
                      uploadedSize += l;
                      if (callBackHandler != null) {
                          if (!callBackHandler.updateProgress(length, uploadedSize, false)) {
                              throw new InterruptedIOException("cancel");
                          }
                      }
                  }
              }
              outStream.flush();
              if (callBackHandler != null) {
                  callBackHandler.updateProgress(length, uploadedSize, true);
              }
          } finally {
              IOUtils.closeQuietly(inStream);
          }
      }
  
      public boolean isStreaming() {
          return true;
      }
  
      /**
       * @deprecated Either use {@link #getContent()} and call {@link java.io.InputStream#close()} on that;
       *             otherwise call {@link #writeTo(java.io.OutputStream)} which is required to free the resources.
       */
      public void consumeContent() throws IOException {
          // If the input stream is from a connection, closing it will read to
          // the end of the content. Otherwise, we don't care what it does.
          this.content.close();
      }
  
      private RequestCallBackHandler callBackHandler = null;
  
      @Override
      public void setCallBackHandler(RequestCallBackHandler callBackHandler) {
          this.callBackHandler = callBackHandler;
      }
  }