Examples of java.io.InputStream.reset()

java.io.InputStream.reset()
Reset this InputStream to the last marked location. If the readlimit has been passed or no mark has been set, throw IOException. This implementation throws IOException and concrete subclasses should provide proper implementations. @throws IOException If the stream is already closed or another IOException occurs.

                            // First three bytes are not BOM, so reset.
                            stream.reset();
                        }
                    }
                    else {
                        stream.reset();
                    }
                    reader = createReader(stream, encoding, isBigEndian);
                }
                // If encoding is UTF-16, we still need to read the first four bytes
                // in order to discover the byte order.

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                    for (; count < 4; ++count) {
                        b4[count] = stream.read();
                        if (b4[count] == -1)
                            break;
                    }
                    stream.reset();
                    
                    String utf16Encoding = "UTF-16";
                    if (count >= 2) {
                        final int b0 = b4[0];
                        final int b1 = b4[1];

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                    for (; count < 4; ++count) {
                        b4[count] = stream.read();
                        if (b4[count] == -1)
                            break;
                    }
                    stream.reset();


                    // Ignore unusual octet order for now.
                    if (count == 4) {
                        // UCS-4, big endian (1234)
                        if (b4[0] == 0x00 && b4[1] == 0x00 && b4[2] == 0x00 && b4[3] == 0x3C) {

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                    for (; count < 4; ++count) {
                        b4[count] = stream.read();
                        if (b4[count] == -1)
                            break;
                    }
                    stream.reset();


                    if (count == 4) {
                        // UCS-2, big endian
                        if (b4[0] == 0x00 && b4[1] == 0x3C && b4[2] == 0x00 && b4[3] == 0x3F) {
                            isBigEndian = Boolean.TRUE;

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                // use a buffered input stream to find out whether there actually
                // is a request body
                InputStream bin = new BufferedInputStream(in);
                bin.mark(1);
                boolean isEmpty = -1 == bin.read();
                bin.reset();
                if (!isEmpty) {
                    requestDocument = DomUtil.parseDocument(bin);
                }
            }
        } catch (IOException e) {

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                        return b;
                    }
                }
            }
            try {
                is.reset();
            } catch (IOException e) {
                is.close();
                is = new BufferedInputStream(new URL(bundleLocation).openStream());
            }
            LOGGER.info("Installing bundle " + bundleLocation);

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        assertEquals(dst.length, is.read(dst));
        assertArrayEquals(src, dst);
        assertEquals(-1, is.read());
        is.close();


        is.reset();
        byte[] dstTooBig = new byte[src.length + 1];
        assertEquals(src.length, is.read(dstTooBig));


        assertEquals(-1, is.read(dstTooBig));
    }

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                //  3) Try using the Resetable interface.
                // To avoid silent data truncation / data corruption, we fail
                // in step three if the stream isn't resetable.
                if (markSet) {
                    // 1) Reset the stream to the previously set mark.
                    srcIn.reset();
                    InputStreamUtil.skipFully(srcIn, hdrInfo.headerLength());
                } else if (in instanceof FormatIdInputStream) {
                    // 2) Add a push back stream on top of the underlying
                    // source, and unread the surplus bytes we read. Set the
                    // push back stream to be the source of the data input obj.

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    final LZ4FastDecompressor decompressor = LZ4Factory.fastestInstance().fastDecompressor();
    InputStream is = new LZ4BlockInputStream(open(compressed.toByteArray()), decompressor, checksum);
    assertFalse(is.markSupported());
    try {
      is.mark(1);
      is.reset();
      assertFalse(true);
    } catch (IOException e) {
      // OK
    }
    byte[] restored = new byte[data.length + 1000];

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                    break;
                }
            }
            byte[] buf = new byte[ONE_KB * 3];
            int length = in.read(buf);
            in.reset();


            if (length <= 0) {
                break;
            }
            nextPos += length;

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