public class Base64OutputStream extends BaseNCodecOutputStream
The default behaviour of the Base64OutputStream is to ENCODE, whereas the default behaviour of the Base64InputStream is to DECODE. But this behaviour can be overridden by using a different constructor.
This class implements section 6.8. Base64 Content-Transfer-Encoding from RFC 2045 Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies by Freed and Borenstein.
Since this class operates directly on byte streams, and not character streams, it is hard-coded to only encode/decode character encodings which are compatible with the lower 127 ASCII chart (ISO-8859-1, Windows-1252, UTF-8, etc).
Note: It is mandatory to close the stream after the last byte has been written to it, otherwise the final padding will be omitted and the resulting data will be incomplete/inconsistent.
Constructor and Description |
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Base64OutputStream(java.io.OutputStream out)
Creates a Base64OutputStream such that all data written is Base64-encoded to the original provided OutputStream.
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Base64OutputStream(java.io.OutputStream out,
boolean doEncode)
Creates a Base64OutputStream such that all data written is either Base64-encoded or Base64-decoded to the
original provided OutputStream.
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Base64OutputStream(java.io.OutputStream out,
boolean doEncode,
int lineLength,
byte[] lineSeparator)
Creates a Base64OutputStream such that all data written is either Base64-encoded or Base64-decoded to the
original provided OutputStream.
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public Base64OutputStream(java.io.OutputStream out)
out
- OutputStream to wrap.public Base64OutputStream(java.io.OutputStream out, boolean doEncode)
out
- OutputStream to wrap.doEncode
- true if we should encode all data written to us, false if we should decode.public Base64OutputStream(java.io.OutputStream out, boolean doEncode, int lineLength, byte[] lineSeparator)
out
- OutputStream to wrap.doEncode
- true if we should encode all data written to us, false if we should decode.lineLength
- If doEncode is true, each line of encoded data will contain lineLength characters (rounded down to
nearest multiple of 4). If lineLength <= 0, the encoded data is not divided into lines. If doEncode
is false, lineLength is ignored.lineSeparator
- If doEncode is true, each line of encoded data will be terminated with this byte sequence (e.g. \r\n).
If lineLength <= 0, the lineSeparator is not used. If doEncode is false lineSeparator is ignored.Copyright © 2010 - 2020 Adobe. All Rights Reserved