The UTF-8 {@link java.nio.charset.Charset charset} is used to jaroslav@609: * decode the entry names. jaroslav@609: * jaroslav@609: * @param in the actual input stream jaroslav@609: */ jaroslav@609: public ZipInputStream(InputStream in) { jaroslav@701: super(in); jaroslav@694: impl = new org.apidesign.bck2brwsr.emul.zip.ZipInputStream(in); jaroslav@609: } jaroslav@609: jaroslav@609: /** jaroslav@609: * Creates a new ZIP input stream. jaroslav@609: * jaroslav@609: * @param in the actual input stream jaroslav@609: * jaroslav@609: * @param charset jaroslav@609: * The {@linkplain java.nio.charset.Charset charset} to be jaroslav@609: * used to decode the ZIP entry name (ignored if the jaroslav@609: * language jaroslav@609: * encoding bit of the ZIP entry's general purpose bit jaroslav@609: * flag is set). jaroslav@609: * jaroslav@609: * @since 1.7 jaroslav@611: * jaroslav@609: public ZipInputStream(InputStream in, Charset charset) { jaroslav@609: super(new PushbackInputStream(in, 512), new Inflater(true), 512); jaroslav@609: usesDefaultInflater = true; jaroslav@609: if(in == null) { jaroslav@609: throw new NullPointerException("in is null"); jaroslav@609: } jaroslav@609: if (charset == null) jaroslav@609: throw new NullPointerException("charset is null"); jaroslav@609: this.zc = ZipCoder.get(charset); jaroslav@609: } jaroslav@611: */ jaroslav@609: jaroslav@609: /** jaroslav@609: * Reads the next ZIP file entry and positions the stream at the jaroslav@609: * beginning of the entry data. jaroslav@609: * @return the next ZIP file entry, or null if there are no more entries jaroslav@609: * @exception ZipException if a ZIP file error has occurred jaroslav@609: * @exception IOException if an I/O error has occurred jaroslav@609: */ jaroslav@609: public ZipEntry getNextEntry() throws IOException { jaroslav@694: return impl.getNextEntry(); jaroslav@609: } jaroslav@609: jaroslav@609: /** jaroslav@609: * Closes the current ZIP entry and positions the stream for reading the jaroslav@609: * next entry. jaroslav@609: * @exception ZipException if a ZIP file error has occurred jaroslav@609: * @exception IOException if an I/O error has occurred jaroslav@609: */ jaroslav@609: public void closeEntry() throws IOException { jaroslav@694: impl.closeEntry(); jaroslav@609: } jaroslav@609: jaroslav@609: /** jaroslav@609: * Returns 0 after EOF has reached for the current entry data, jaroslav@609: * otherwise always return 1. jaroslav@609: *
jaroslav@609: * Programs should not count on this method to return the actual number
jaroslav@609: * of bytes that could be read without blocking.
jaroslav@609: *
jaroslav@609: * @return 1 before EOF and 0 after EOF has reached for current entry.
jaroslav@609: * @exception IOException if an I/O error occurs.
jaroslav@609: *
jaroslav@609: */
jaroslav@609: public int available() throws IOException {
jaroslav@694: return impl.available();
jaroslav@609: }
jaroslav@609:
jaroslav@609: /**
jaroslav@609: * Reads from the current ZIP entry into an array of bytes.
jaroslav@609: * If len is not zero, the method
jaroslav@609: * blocks until some input is available; otherwise, no
jaroslav@609: * bytes are read and 0 is returned.
jaroslav@609: * @param b the buffer into which the data is read
jaroslav@609: * @param off the start offset in the destination array b
jaroslav@609: * @param len the maximum number of bytes read
jaroslav@609: * @return the actual number of bytes read, or -1 if the end of the
jaroslav@609: * entry is reached
jaroslav@609: * @exception NullPointerException if b is null.
jaroslav@609: * @exception IndexOutOfBoundsException if off is negative,
jaroslav@609: * len is negative, or len is greater than
jaroslav@609: * b.length - off
jaroslav@609: * @exception ZipException if a ZIP file error has occurred
jaroslav@609: * @exception IOException if an I/O error has occurred
jaroslav@609: */
jaroslav@609: public int read(byte[] b, int off, int len) throws IOException {
jaroslav@694: return impl.read(b, off, len);
jaroslav@609: }
jaroslav@609:
jaroslav@609: /**
jaroslav@609: * Skips specified number of bytes in the current ZIP entry.
jaroslav@609: * @param n the number of bytes to skip
jaroslav@609: * @return the actual number of bytes skipped
jaroslav@609: * @exception ZipException if a ZIP file error has occurred
jaroslav@609: * @exception IOException if an I/O error has occurred
jaroslav@609: * @exception IllegalArgumentException if n < 0
jaroslav@609: */
jaroslav@609: public long skip(long n) throws IOException {
jaroslav@694: return impl.skip(n);
jaroslav@609: }
jaroslav@609:
jaroslav@609: /**
jaroslav@609: * Closes this input stream and releases any system resources associated
jaroslav@609: * with the stream.
jaroslav@609: * @exception IOException if an I/O error has occurred
jaroslav@609: */
jaroslav@609: public void close() throws IOException {
jaroslav@694: impl.close();
jaroslav@609: }
jaroslav@609:
jaroslav@609: /**
jaroslav@609: * Creates a new ZipEntry object for the specified
jaroslav@609: * entry name.
jaroslav@609: *
jaroslav@609: * @param name the ZIP file entry name
jaroslav@609: * @return the ZipEntry just created
jaroslav@609: */
jaroslav@609: protected ZipEntry createZipEntry(String name) {
jaroslav@609: return new ZipEntry(name);
jaroslav@609: }
jaroslav@609:
jaroslav@694: @Override
jaroslav@694: public int read() throws IOException {
jaroslav@694: return impl.read();
jaroslav@609: }
jaroslav@609:
jaroslav@694: @Override
jaroslav@694: public boolean markSupported() {
jaroslav@694: return impl.markSupported();
jaroslav@609: }
jaroslav@609:
jaroslav@694: @Override
jaroslav@694: public void mark(int readlimit) {
jaroslav@694: impl.mark(readlimit);
jaroslav@609: }
jaroslav@609:
jaroslav@694: @Override
jaroslav@694: public void reset() throws IOException {
jaroslav@694: impl.reset();
jaroslav@609: }
jaroslav@609:
jaroslav@694: @Override
jaroslav@694: public int read(byte[] b) throws IOException {
jaroslav@694: return impl.read(b);
jaroslav@611: }
jaroslav@609: }