Package com.aowagie.text.pdf.codec

Class Base64.InputStream

  • All Implemented Interfaces:
    java.io.Closeable, java.lang.AutoCloseable
    Enclosing class:
    Base64
    private static class Base64.InputStream
extends java.io.FilterInputStream
    A Base64.InputStream will read data from another java.io.InputStream, given in the constructor, and encode/decode to/from Base64 notation on the fly.
    Since:
    1.3
    See Also:
    Base64

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private InputStream​(java.io.InputStream in, int options)
      Constructs a Base64.InputStream in either ENCODE or DECODE mode.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      int read()
      Reads enough of the input stream to convert to/from Base64 and returns the next byte.
      int read​(byte[] dest, int off, int len)
      Calls read() repeatedly until the end of stream is reached or len bytes are read.

      • Methods inherited from class java.io.FilterInputStream

        available, close, mark, markSupported, read, reset, skip

      • Methods inherited from class java.io.InputStream

        nullInputStream, readAllBytes, readNBytes, readNBytes, transferTo

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • encode

        private final boolean encode

      • position

        private int position

      • buffer

        private final byte[] buffer

      • bufferLength

        private final int bufferLength

      • numSigBytes

        private int numSigBytes

      • lineLength

        private int lineLength

      • breakLines

        private final boolean breakLines

      • options

        private final int options

      • alphabet

        private final byte[] alphabet

      • decodabet

        private final byte[] decodabet

    • Constructor Detail

      • InputStream

        private InputStream​(java.io.InputStream in,
                    int options)
        Constructs a Base64.InputStream in either ENCODE or DECODE mode.

        Valid options:

           ENCODE or DECODE: Encode or Decode as data is read.
   DONT_BREAK_LINES: don't break lines at 76 characters
     (only meaningful when encoding)
     Note: Technically, this makes your encoding non-compliant.

        Example: new Base64.InputStream( in, Base64.DECODE )

        Parameters:
        in - the java.io.InputStream from which to read data.
        options - Specified options
        Since:
        2.0
        See Also:
        Base64.ENCODE, Base64.DECODE, Base64.DONT_BREAK_LINES

    • Method Detail

      • read

        public int read()
         throws java.io.IOException
        Reads enough of the input stream to convert to/from Base64 and returns the next byte.
        Overrides:
        read in class java.io.FilterInputStream
        Returns:
        next byte
        Throws:
        java.io.IOException
        Since:
        1.3

      • read

        public int read​(byte[] dest,
                int off,
                int len)
         throws java.io.IOException
        Calls read() repeatedly until the end of stream is reached or len bytes are read. Returns number of bytes read into array or -1 if end of stream is encountered.
        Overrides:
        read in class java.io.FilterInputStream
        Parameters:
        dest - array to hold values
        off - offset for array
        len - max number of bytes to read into array
        Returns:
        bytes read into array or -1 if end of stream is encountered.
        Throws:
        java.io.IOException
        Since:
        1.3