Class LimitedInputStream

java.lang.Object
java.io.InputStream
java.io.FilterInputStream
com.vaadin.external.apache.commons.fileupload2.util.LimitedInputStream
All Implemented Interfaces:
Closeable, Closeable, AutoCloseable

public abstract class LimitedInputStream extends FilterInputStream implements Closeable
An input stream, which limits its data size. This stream is used, if the content length is unknown.
  • Constructor Details

    • LimitedInputStream

      public LimitedInputStream(InputStream inputStream, long pSizeMax)
      Creates a new instance.
      Parameters:
      inputStream - The input stream, which shall be limited.
      pSizeMax - The limit; no more than this number of bytes shall be returned by the source stream.
  • Method Details

    • raiseError

      protected abstract void raiseError(long pSizeMax, long pCount) throws IOException
      Called to indicate, that the input streams limit has been exceeded.
      Parameters:
      pSizeMax - The input streams limit, in bytes.
      pCount - The actual number of bytes.
      Throws:
      IOException - The called method is expected to raise an IOException.
    • read

      public int read() throws IOException
      Reads the next byte of data from this input stream. The value byte is returned as an int in the range 0 to 255. If no byte is available because the end of the stream has been reached, the value -1 is returned. This method blocks until input data is available, the end of the stream is detected, or an exception is thrown.

      This method simply performs in.read() and returns the result.

      Overrides:
      read in class FilterInputStream
      Returns:
      the next byte of data, or -1 if the end of the stream is reached.
      Throws:
      IOException - if an I/O error occurs.
      See Also:
    • read

      public int read(byte[] b, int off, int len) throws IOException
      Reads up to len bytes of data from this input stream into an array of bytes. If len is not zero, the method blocks until some input is available; otherwise, no bytes are read and 0 is returned.

      This method simply performs in.read(b, off, len) and returns the result.

      Overrides:
      read in class FilterInputStream
      Parameters:
      b - the buffer into which the data is read.
      off - The start offset in the destination array b.
      len - the maximum number of bytes read.
      Returns:
      the total number of bytes read into the buffer, or -1 if there is no more data because the end of the stream has been reached.
      Throws:
      NullPointerException - If b is null.
      IndexOutOfBoundsException - If off is negative, len is negative, or len is greater than b.length - off
      IOException - if an I/O error occurs.
      See Also:
    • isClosed

      public boolean isClosed() throws IOException
      Returns, whether this stream is already closed.
      Specified by:
      isClosed in interface Closeable
      Returns:
      True, if the stream is closed, otherwise false.
      Throws:
      IOException - An I/O error occurred.
    • close

      public void close() throws IOException
      Closes this input stream and releases any system resources associated with the stream. This method simply performs in.close().
      Specified by:
      close in interface AutoCloseable
      Specified by:
      close in interface Closeable
      Specified by:
      close in interface Closeable
      Overrides:
      close in class FilterInputStream
      Throws:
      IOException - if an I/O error occurs.
      See Also: