package org.apache.chemistry.opencmis.inmemory.storedobj.impl;
   
   /*
    *
    * 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
   *
   *   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.
   *
   */
  
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.math.BigInteger;
  import java.util.List;
  
  import org.apache.chemistry.opencmis.commons.data.CmisExtensionElement;
  import org.apache.chemistry.opencmis.commons.data.ContentStream;
  import org.apache.chemistry.opencmis.commons.exceptions.CmisInvalidArgumentException;
  
  public class ContentStreamDataImpl implements ContentStream {
  
      private int fLength;
  
      private String fMimeType;
  
      private String fFileName;
  
      private byte[] fContent;
  
      private long fStreamLimitOffset;
  
      private long fStreamLimitLength;
  
      private final long sizeLimitKB;
  
      public ContentStreamDataImpl(long maxAllowedContentSizeKB) {
          sizeLimitKB = maxAllowedContentSizeKB;
      }
  
      public void setContent(InputStream in) throws IOException {
          fStreamLimitOffset = fStreamLimitLength = -1;
          if (null == in) {
              fContent = null; // delete content
              fLength = 0;
          } else {
              byte[] buffer = new byte[0xFFFF];
              ByteArrayOutputStream contentStream = new ByteArrayOutputStream();
              for (int len = 0; (len = in.read(buffer)) != -1;) {
                  contentStream.write(buffer, 0, len);
                  fLength += len;
                  if (sizeLimitKB > 0 && fLength > sizeLimitKB * 1024) {
                      throw new CmisInvalidArgumentException("Content size exceeds max. allowed size of " + sizeLimitKB
                              + "KB.");
                  }
              }
              fContent = contentStream.toByteArray();
              fLength = contentStream.size();
              contentStream.close();
              in.close();
          }
      }
  
      public long getLength() {
          return fLength;
      }
  
      public BigInteger getBigLength() {
          return BigInteger.valueOf(fLength);
      }
  
      public String getMimeType() {
          return fMimeType;
      }
  
      public void setMimeType(String fMimeType) {
          this.fMimeType = fMimeType;
      }
  
      public String getFileName() {
          return fFileName;
      }
  
      public void setFileName(String fileName) {
          this.fFileName = fileName;
     }
 
     public String getFilename() {
         return fFileName;
     }
 
     public InputStream getStream() {
         if (null == fContent) {
             return null;
         } else if (fStreamLimitOffset <= 0 && fStreamLimitLength < 0) {
             return new ByteArrayInputStream(fContent);
         } else {
             return new ByteArrayInputStream(fContent, (int) (fStreamLimitOffset < 0 ? 0 : fStreamLimitOffset),
                     (int) (fStreamLimitLength < 0 ? fLength : fStreamLimitLength));
         }
     }
 
     public ContentStream getCloneWithLimits(long offset, long length) {
         ContentStreamDataImpl clone = new ContentStreamDataImpl(0);
         clone.fFileName = fFileName;
         clone.fLength = fLength;
         clone.fContent = fContent;
         clone.fMimeType = fMimeType;
         clone.fStreamLimitOffset = offset;
         clone.fStreamLimitLength = length;
         return clone;
     }
 
     public final byte[] getBytes() {
         return fContent;
     }
     
     public List<CmisExtensionElement> getExtensions() {
         return null;
     }
 
     public void setExtensions(List<CmisExtensionElement> extensions) {
         // not implemented
     }
 }