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by ZweiBieren Package com.physpics.tools.encoding Java coffee cup logo

As part of an effort to be able to download from anywhere, I developed a comprehensive set of encoding/decoding modules. The following are supported:

  • bzip
  • compress

PrintableEncodings - encoder/decoder for
uuencode base64 quoted-printable

CompressEngine is the unix "compress" utility.
UncompressInputStream undoes the compression done by the Unix compress utility.
The version here fixes a bug wherein
codes near the end of the stream may be incorrectly processed.

bzip2 compression/decompression is supported by the CBZip2... methods.

src Jdoc class note
Java steaming cup doc with "J" BZip.java DESCRIBE
Java steaming cup doc with "J" BZip2Constants.java DESCRIBE
Java steaming cup doc with "J" CBZip2InputStream.java DESCRIBE
Java steaming cup doc with "J" CBZip2OutputStream.java DESCRIBE
Java steaming cup doc with "J" CompressEngine.java DESCRIBE
Java steaming cup doc with "J" CRC.java DESCRIBE
Java steaming cup doc with "J" EncodingManager.java DESCRIBE
Java steaming cup doc with "J" PrintableEncodings.java DESCRIBE
Java steaming cup doc with "J" UncompressInputStream.java DESCRIBE

EncodingManage is the primary package managing access to all the others

various constructors
public EncodingManager() {
public EncodingManager(byte[] array) {
public EncodingManager(String s, Charset cs) {
public EncodingManager(ByteBuffer bb) {
public EncodingManager(InputStream instr) {

various inputs

public void setData(ByteBuffer bb) { data = bb; }

various outputs

public ByteBuffer getByteBuffer() { return data; }
public void close() {
public void write(int b) {
public OutputStream getOutputStream() {
public Image toImage() {
public byte[] toBytes() {
public void printBytesInHex(OutputStream os) {
public void writeToFile(String filename) {
public void writeToStream(OutputStream ous) {
public String toString(Charset cs) {
public String toString() {
public String toString(String css) {

operations

public void swapShorts() {
public void swapInts() {
public void swapLongs() {
public void swapFloats() { swapInts(); }
public void swapDoubles() { swapLongs(); }

static public String urlEncode(String s) {
static public String urlDecode(String s) {


public void encode(Compression comp) {
decode(Compression comp) {

BZIP2, // modern Unix program: bzip2 [www.bzip.org]
GZIP, // old Unix program: gzip. uses deflate [RFC 1952]
ZLIB, // simple wrapper to deflate [RFC 1950]
BASE64, // mail transparent; pgm: uuencode -m [RFC 2045]
UU, // mail mostly transparent: pgm: uuencode
QP, // quoted-printable [RFC 2045]
BZIP, // one-time Unix encoding. pgm: bzip.
COMPRESS, // ancient Unix encoding. program: compress
DEFLATE, // compression engine. needs wrapper [RFC 1951]public void
PACK200, // Java tool

(ALSO URL)

BZIP, // one-time Unix encoding. pgm: bzip.
bzipDecode  (no encode)

BZIP2, // modern Unix program: bzip2 [www.bzip.org]
bzip2Encode
bzip2Decode

new BZip().uncompressStream ( InputStream instr, OutputStream outstream )

COMPRESS, // ancient Unix encoding. program: compress
compressEncode
compressDecode

c = new CompressEngine(InputStream, OutputStream) c.input_size(int); (optional) c.compress() (T === output smaller than input) does not close the streans

DEFLATE, // compression engine. needs wrapper [RFC 1951]public void

public void deflate(int level)
public void inflate() {

ZLIB, // simple wrapper to deflate [RFC 1950]
public void zlibEncode(int level)
public void zlibDecode() {

GZIP, // old Unix program: gzip. uses deflate [RFC 1952]
public void gzipEncode() {
public void gzipDecode() {

PACK200

Accept-Encoding=pack200-gzip". This indicates to the server that the client application desires a version of the file encoded with Pack200 and further compressed with gzip.

public void pack200Pack() {
public void pack200Unpack() {

UU, // mail mostly transparent: pgm: uuencode
public void uuencode(String mode, String fileName) {
public void uudecode() {

BASE64, // mail transparent; pgm: uuencode -m [RFC 2045]
public void encodeBase64() {
public void decodeBase64() {

QP, // quoted-printable [RFC 2045]
public void encodeQP() {
public void decodeQP() {

 
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