Example usage for java.io InputStream reset

Introduction

In this page you can find the example usage for java.io InputStream reset.

Prototype

public synchronized void reset() throws IOException 

Source Link

Document

Repositions this stream to the position at the time the mark method was last called on this input stream.

Usage

From source file:cn.ctyun.amazonaws.auth.AWS4Signer.java

/**
 * Calculate the hash of the request's payload.
 * Subclass could override this method to provide different values for "x-amz-content-sha256" header
 * or do any other necessary set-ups on the request headers.
 * (e.g. aws-chunked uses a pre-defined header value, and needs to change some headers
 * relating to content-encoding and content-length.)
 *//*w  w  w.j  av  a  2  s. co  m*/
protected String calculateContentHash(Request<?> request) {
    InputStream payloadStream = getBinaryRequestPayloadStream(request);
    payloadStream.mark(-1);
    String contentSha256 = BinaryUtils.toHex(hash(payloadStream));
    try {
        payloadStream.reset();
    } catch (IOException e) {
        throw new AmazonClientException("Unable to reset stream after calculating AWS4 signature", e);
    }
    return contentSha256;
}

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From source file:org.codehaus.groovy.grails.web.pages.GroovyPageWritable.java

/**
 * Writes the Groovy source code attached to the given info object
 * to the response, prefixing each line with its line number. The
 * line numbers make it easier to match line numbers in exceptions
 * to the generated source./*from  w  ww .ja v a2  s .co m*/
 * @param info The meta info for the GSP page that we want to write
 * the generated source for.
 * @param out The writer to send the source to.
 * @throws IOException If there is either a problem with the input
 * stream for the Groovy source, or the writer.
 */
protected void writeGroovySourceToResponse(GroovyPageMetaInfo info, Writer out) throws IOException {
    InputStream in = info.getGroovySource();
    if (in == null)
        return;
    try {
        try {
            in.reset();
        } catch (IOException e) {
            // ignore
        }
        BufferedReader reader = new BufferedReader(new InputStreamReader(in, "UTF-8"));

        int lineNum = 1;
        int maxPaddingSize = 3;

        // Prepare the buffer containing the whitespace padding.
        // The padding is used to right-align the line numbers.
        StringBuilder paddingBuffer = new StringBuilder(maxPaddingSize);
        for (int i = 0; i < maxPaddingSize; i++) {
            paddingBuffer.append(' ');
        }

        // Set the initial padding.
        String padding = paddingBuffer.toString();

        // Read the Groovy source line by line and write it to the
        // response, prefixing each line with the line number.
        for (String line = reader.readLine(); line != null; line = reader.readLine(), lineNum++) {
            // Get the current line number as a string.
            String numberText = String.valueOf(lineNum);

            // Decrease the padding if the current line number has
            // more digits than the previous one.
            if (padding.length() + numberText.length() > 4) {
                paddingBuffer.deleteCharAt(padding.length() - 1);
                padding = paddingBuffer.toString();
            }

            // Write out this line.
            out.write(padding);
            out.write(numberText);
            out.write(": ");
            out.write(line);
            out.write('\n');
        }
    } finally {
        out.close();
        in.close();
    }
}

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From source file:mj.ocraptor.extraction.tika.parser.iwork.IWorkPackageParser.java

public void parse(InputStream stream, ContentHandler handler, Metadata metadata, ParseContext context)
        throws IOException, SAXException, TikaException {
    ZipArchiveInputStream zip = new ZipArchiveInputStream(stream);
    ZipArchiveEntry entry = zip.getNextZipEntry();

    TikaImageHelper helper = new TikaImageHelper(metadata);
    XHTMLContentHandler xhtml = new XHTMLContentHandler(handler, metadata);
    IWORKDocumentType type = null;/*from ww w. jav a 2s .c  o m*/
    try {
        while (entry != null) {

            // ------------------------------------------------ //
            // -- handle image files
            // ------------------------------------------------ //
            String entryExtension = null;
            try {
                entryExtension = FilenameUtils.getExtension(new File(entry.getName()).getName());
            } catch (Exception e) {
                e.printStackTrace();
            }

            if (entryExtension != null && FileType.isValidImageFileExtension(entryExtension)) {
                File imageFile = null;
                try {
                    imageFile = TikaImageHelper.saveZipEntryToTemp(zip, entry);
                    helper.addImage(imageFile);
                } catch (Exception e) {
                    e.printStackTrace();
                } finally {
                    if (imageFile != null) {
                        imageFile.delete();
                    }
                }
            }

            // ------------------------------------------------ //
            // --
            // ------------------------------------------------ //

            if (!IWORK_CONTENT_ENTRIES.contains(entry.getName())) {
                entry = zip.getNextZipEntry();
                continue;
            }

            InputStream entryStream = new BufferedInputStream(zip, 4096);
            entryStream.mark(4096);
            type = IWORKDocumentType.detectType(entryStream);
            entryStream.reset();

            if (type != null) {
                ContentHandler contentHandler;

                switch (type) {
                case KEYNOTE:
                    contentHandler = new KeynoteContentHandler(xhtml, metadata);
                    break;
                case NUMBERS:
                    contentHandler = new NumbersContentHandler(xhtml, metadata);
                    break;
                case PAGES:
                    contentHandler = new PagesContentHandler(xhtml, metadata);
                    break;
                case ENCRYPTED:
                    // We can't do anything for the file right now
                    contentHandler = null;
                    break;
                default:
                    throw new TikaException("Unhandled iWorks file " + type);
                }

                metadata.add(Metadata.CONTENT_TYPE, type.getType().toString());
                xhtml.startDocument();
                if (contentHandler != null) {
                    context.getSAXParser().parse(new CloseShieldInputStream(entryStream),
                            new OfflineContentHandler(contentHandler));
                }
            }
            entry = zip.getNextZipEntry();
        }

        helper.addTextToHandler(xhtml);
        xhtml.endDocument();
    } catch (Exception e) {
        // TODO: logging
        e.printStackTrace();
    } finally {
        if (zip != null) {
            zip.close();
        }
        if (helper != null) {
            helper.close();
        }
    }
}

---

From source file:org.fcrepo.utilities.io.TestByteRangeInputStream.java

@SuppressWarnings("resource")
@Test//ww  w .  ja  va  2  s  . c  o  m
public void testSkippedBytes() throws IndexOutOfBoundsException, IOException {
    String data = "1234567890";
    String input = "bytes=3-12";
    InputStream bytes = new ByteArrayInputStream(data.getBytes(Charset.forName("UTF-8")));
    ByteRangeInputStream test = new ByteRangeInputStream(bytes, 10, input);
    assertEquals("bad offset of " + test.offset + " for " + input, 3, test.offset);
    assertEquals("bad length of " + test.length + " for " + input, 7, test.length);
    assertEquals("bytes 3-9/10", test.contentRange);
    bytes.reset();
    test = new ByteRangeInputStream(bytes, 10, "bytes=0-8");
    assertEquals("123456789", IOUtils.toString(test));
    bytes.reset();
    InputStream bytes2 = new ByteArrayInputStream(data.getBytes(Charset.forName("UTF-8")));
    test = new ByteRangeInputStream(bytes, 10, "bytes=0-2");
    ByteRangeInputStream test2 = new ByteRangeInputStream(bytes2, 10, "bytes=-7");
    SequenceInputStream test3 = new SequenceInputStream(test, test2);
    String actual = IOUtils.toString(test3);
    assertEquals(data, actual);
}

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From source file:org.apache.jackrabbit.core.data.DBDataStoreTest.java

public void testDbInputStreamReset() throws Exception {
    DataRecord record = store.getRecord(identifier);
    InputStream in = record.getStream();
    try {/*www  . j av  a2s.  c om*/
        // test whether mark and reset works
        assertTrue(in.markSupported());
        in.mark(data.length);
        while (-1 != in.read()) {
            // loop
        }
        assertTrue(in.markSupported());
        try {
            in.reset();
        } catch (Exception e) {
            fail("Unexpected exception while resetting input stream: " + e.getMessage());
        }

        // test integrity of replayed bytes
        byte[] replayedBytes = new byte[data.length];
        int length = in.read(replayedBytes);
        assertEquals(length, data.length);

        for (int i = 0; i < data.length; i++) {
            log.append(i + " data: " + data[i] + " replayed: " + replayedBytes[i] + "\n");
            assertEquals(data[i], replayedBytes[i]);
        }

        assertEquals(-1, in.read());

    } finally {
        in.close();
        log.flush();
    }
}

---

From source file:com.examples.with.different.packagename.coverage.BOMInputStreamTest.java

public void testMarkResetBeforeReadWithBOM() throws Exception {
    byte[] data = new byte[] { 'A', 'B', 'C', 'D' };
    InputStream in = new BOMInputStream(createDataStream(data, true));
    assertTrue(in.markSupported());/*from ww  w .  ja v a 2 s . c  om*/

    in.mark(10);

    in.read();
    in.read();
    in.reset();
    assertEquals('A', in.read());
}

---

From source file:com.examples.with.different.packagename.coverage.BOMInputStreamTest.java

public void testMarkResetBeforeReadWithoutBOM() throws Exception {
    byte[] data = new byte[] { 'A', 'B', 'C', 'D' };
    InputStream in = new BOMInputStream(createDataStream(data, false));
    assertTrue(in.markSupported());//ww  w  .  java 2s .c o m

    in.mark(10);

    in.read();
    in.read();
    in.reset();
    assertEquals('A', in.read());
}

---

From source file:com.kurento.kmf.content.internal.ControlProtocolManager.java

/**
 * Reads inputStream (from request) and detects incoming JSON encoding.
 * /* w w  w.j a va  2 s  .c o  m*/
 * @param inputStream
 *            Input Stream from request
 * @return String identifier for detected JSON (UTF8, UTF16LE, ...)
 * @throws IOException
 *             Exception while parsing JSON
 */
private String detectJsonEncoding(InputStream inputStream) throws IOException {
    inputStream.mark(4);
    int mask = 0;
    for (int count = 0; count < 4; count++) {
        int r = inputStream.read();
        if (r == -1) {
            break;
        }
        mask = mask << 1;
        mask |= (r == 0) ? 0 : 1;
    }
    inputStream.reset();
    return match(mask);
}

---

From source file:com.alibaba.simpleimage.codec.jpeg.JPEGDecodePerformanceTest.java

protected void run(DecodeFacade decoder, File rootDir, String filename, int times, int frequency)
        throws Exception {
    long start, end, total = 0L;
    if (rootDir == null) {
        rootDir = imgDir;/* w ww . j  a v  a2  s. com*/
    }

    FileInputStream inputStream = new FileInputStream(new File(rootDir, filename));

    ByteArrayOutputStream temp = new ByteArrayOutputStream();
    IOUtils.copy(inputStream, temp);
    IOUtils.closeQuietly(inputStream);

    InputStream img = temp.toInputStream();
    temp = null;

    System.out.println("***********Performance Test**************");

    for (int i = 0; i < frequency; i++) {
        // System.gc();
        // Thread.sleep(5 * 1000L);

        start = System.currentTimeMillis();

        for (int t = 0; t < times; t++) {
            // File img = imgs[t % imgs.length];
            img.reset();
            BufferedImage bi = decoder.decode(img);
            bi.getHeight();
            bi = null;
        }

        end = System.currentTimeMillis();

        total += (end - start);
    }

    System.out.printf("Decoder : %s \n", decoder.getName());
    System.out.println("Image : " + filename);
    System.out.printf("Times : %d\n", times);
    System.out.printf("Frequency : %d\n", frequency);
    System.out.printf("Total time : %d ms\n", total);
    System.out.printf("Average time : %.2f ms\n", ((double) total / (times * frequency)));
}

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