org.apache.xmlgraphics.util.io

## Class Base64DecodeStream

- java.lang.Object
- - java.io.InputStream
  - - org.apache.xmlgraphics.util.io.Base64DecodeStream

- All Implemented Interfaces:
    java.io.Closeable, java.lang.AutoCloseable

      public class Base64DecodeStream
      extends java.io.InputStream

  This class implements a Base64 Character decoder as specified in RFC1113. Unlike some other encoding schemes there is nothing in this encoding that tells the decoder where a buffer starts or stops, so to use it you will need to isolate your encoded data into a single chunk and then feed them this decoder. The simplest way to do that is to read all of the encoded data into a string and then use:

            byte    data[];
            InputStream is = new ByteArrayInputStream(data);
            is = new Base64DecodeStream(is);

  On errors, this class throws a IOException with the following detail strings:

          "Base64DecodeStream: Bad Padding byte (2)."
          "Base64DecodeStream: Bad Padding byte (1)."

  Version:
    $Id$ Originally authored by Thomas DeWeese, Vincent Hardy, and Chuck McManis.

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `Base64DecodeStream(java.io.InputStream src)`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `int` | `available()`
    `void` | `close()`
    `boolean` | `markSupported()`
    `int` | `read()`
    `int` | `read(byte[] out, int offset, int len)`

    - ### Methods inherited from class java.io.InputStream

      `mark, read, reset, skip`

    - ### Methods inherited from class java.lang.Object

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

- - ### Constructor Detail

    - #### Base64DecodeStream

          public Base64DecodeStream(java.io.InputStream src)

  - ### Method Detail

    - #### markSupported

          public boolean markSupported()

      Overrides:
        `markSupported` in class `java.io.InputStream`

    - #### close

          public void close()
                     throws java.io.IOException

      Specified by:
        `close` in interface `java.io.Closeable`
      Specified by:
        `close` in interface `java.lang.AutoCloseable`
      Overrides:
        `close` in class `java.io.InputStream`
      Throws:
        `java.io.IOException`

    - #### available

          public int available()
                        throws java.io.IOException

      Overrides:
        `available` in class `java.io.InputStream`
      Throws:
        `java.io.IOException`

    - #### read

          public int read()
                   throws java.io.IOException

      Specified by:
        `read` in class `java.io.InputStream`
      Throws:
        `java.io.IOException`

    - #### read

          public int read(byte[] out,
                          int offset,
                          int len)
                   throws java.io.IOException

      Overrides:
        `read` in class `java.io.InputStream`
      Throws:
        `java.io.IOException`

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