Package com.itextpdf.io.util

Class StreamUtil

  • public final class StreamUtil
extends java.lang.Object
    This file is a helper class for internal usage only. Be aware that its API and functionality may be changed in future.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private static byte[] escB  
      private static byte[] escF  
      private static byte[] escN  
      private static byte[] escR  
      private static byte[] escT  
      private static int TRANSFER_SIZE  

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private StreamUtil()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static void copyBytes​(IRandomAccessSource source, long start, long length, java.io.OutputStream output)
      Copy bytes from the RandomAccessSource to OutputStream.
      static ByteBuffer createBufferedEscapedString​(byte[] bytes)  
      static ByteBuffer createBufferedHexedString​(byte[] bytes)  
      static byte[] createEscapedString​(byte[] bytes)
      Escapes a byte array according to the PDF conventions.
      static byte[] inputStreamToArray​(java.io.InputStream stream)
      Reads the full content of a stream and returns them in a byte array
      static void readFully​(java.io.InputStream input, byte[] b, int off, int len)
      Reads len bytes from an input stream.
      static void skip​(java.io.InputStream stream, long size)
      This method is an alternative for the InputStream.skip() -method that doesn't seem to work properly for big values of size .
      static void transferBytes​(RandomAccessFileOrArray input, java.io.OutputStream output)  
      static void transferBytes​(java.io.InputStream input, java.io.OutputStream output)  
      static void writeEscapedString​(java.io.OutputStream outputStream, byte[] bytes)
      Escapes a byte array according to the PDF conventions.
      static void writeHexedString​(java.io.OutputStream outputStream, byte[] bytes)  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • escR

        private static final byte[] escR

      • escN

        private static final byte[] escN

      • escT

        private static final byte[] escT

      • escB

        private static final byte[] escB

      • escF

        private static final byte[] escF

    • Constructor Detail

      • StreamUtil

        private StreamUtil()

    • Method Detail

      • skip

        public static void skip​(java.io.InputStream stream,
                        long size)
                 throws java.io.IOException
        This method is an alternative for the InputStream.skip() -method that doesn't seem to work properly for big values of size .
        Parameters:
        stream - the InputStream
        size - the number of bytes to skip
        Throws:
        java.io.IOException - if an I/O error occurs.

      • createEscapedString

        public static byte[] createEscapedString​(byte[] bytes)
        Escapes a byte array according to the PDF conventions.
        Parameters:
        bytes - the byte array to escape
        Returns:
        an escaped byte array

      • writeEscapedString

        public static void writeEscapedString​(java.io.OutputStream outputStream,
                                      byte[] bytes)
        Escapes a byte array according to the PDF conventions.
        Parameters:
        outputStream - the OutputStream an escaped byte array write to.
        bytes - the byte array to escape.

      • writeHexedString

        public static void writeHexedString​(java.io.OutputStream outputStream,
                                    byte[] bytes)

      • createBufferedEscapedString

        public static ByteBuffer createBufferedEscapedString​(byte[] bytes)

      • createBufferedHexedString

        public static ByteBuffer createBufferedHexedString​(byte[] bytes)

      • transferBytes

        public static void transferBytes​(java.io.InputStream input,
                                 java.io.OutputStream output)
                          throws java.io.IOException
        Throws:
        java.io.IOException

      • transferBytes

        public static void transferBytes​(RandomAccessFileOrArray input,
                                 java.io.OutputStream output)
                          throws java.io.IOException
        Throws:
        java.io.IOException

      • inputStreamToArray

        public static byte[] inputStreamToArray​(java.io.InputStream stream)
                                 throws java.io.IOException
        Reads the full content of a stream and returns them in a byte array
        Parameters:
        stream - the stream to read
        Returns:
        a byte array containing all of the bytes from the stream
        Throws:
        java.io.IOException - if there is a problem reading from the input stream

      • copyBytes

        public static void copyBytes​(IRandomAccessSource source,
                             long start,
                             long length,
                             java.io.OutputStream output)
                      throws java.io.IOException
        Copy bytes from the RandomAccessSource to OutputStream.
        Parameters:
        source - the RandomAccessSource copy from.
        start - start position of source copy from.
        length - length copy to.
        output - the OutputStream copy to.
        Throws:
        java.io.IOException - on error.

      • readFully

        public static void readFully​(java.io.InputStream input,
                             byte[] b,
                             int off,
                             int len)
                      throws java.io.IOException
        Reads len bytes from an input stream.
        Parameters:
        input - the stream to read
        b - the buffer into which the data is read.
        off - an int specifying the offset into the data.
        len - an int specifying the number of bytes to read.
        Throws:
        java.io.IOException - if an I/O error occurs.