Example usage for org.apache.commons.io.output NullOutputStream nullOutputStream

Introduction

In this page you can find the example usage for org.apache.commons.io.output NullOutputStream nullOutputStream.

Prototype

public static OutputStream nullOutputStream() 

Source Link

Document

Returns a new OutputStream which discards all bytes.

Usage

From source file:org.dataconservancy.packaging.tool.model.ipm.ChecksumCalculatingInputStreamTest.java

@Test
public void testCorrectChecksum() throws Exception {
    final String expectedSha1 = "bae5ed658ab3546aee12f23f36392f35dba1ebdd";
    final String expectedMd5 = "ce90a5f32052ebbcd3b20b315556e154";
    final InputStream data = this.getClass().getResourceAsStream("/fox.txt");

    MessageDigest sha1 = MessageDigest.getInstance("SHA-1");
    MessageDigest md5 = MessageDigest.getInstance("MD5");
    FileInfo.ChecksumCalculatingInputStream underTest = new FileInfo.ChecksumCalculatingInputStream(data,
            Arrays.asList(md5, sha1));

    IOUtils.copy(underTest, new NullOutputStream());

    underTest.close();/*from   w w w. j ava  2  s . c  o m*/

    Map<MessageDigest, byte[]> digests = underTest.digests();
    assertEquals(expectedSha1, Hex.encodeHexString(digests.get(sha1)));
    assertEquals(expectedMd5, Hex.encodeHexString(digests.get(md5)));
}

---

From source file:org.dataconservancy.packaging.tool.model.ipm.FileInfo.java

/**
 * Default constructor that should be used in most cases. Will read the file at the path location and load the necessary file attributes.
 * @param path The path to the file.// w  ww .  ja  va  2s.  co m
 */
public FileInfo(Path path) {
    location = path.toUri();
    name = path.getFileName().toString();

    try {
        fileAttributes = new FileInfoAttributes(Files.readAttributes(path, BasicFileAttributes.class));
        if (fileAttributes.isRegularFile()) {
            checksums = new HashMap<>();
            formats = new ArrayList<>();

            MessageDigest md5 = null;
            MessageDigest sha1 = null;

            try {
                md5 = MessageDigest.getInstance("MD5");
                sha1 = MessageDigest.getInstance("SHA-1");
            } catch (NoSuchAlgorithmException e) {
                throw new RuntimeException(e.getMessage(), e);
            }

            try (ChecksumCalculatingInputStream in = new ChecksumCalculatingInputStream(
                    Files.newInputStream(path), Arrays.asList(md5, sha1))) {

                IOUtils.copy(in, new NullOutputStream());

                in.digests().forEach((md, digest) -> {
                    String encoded = Hex.encodeHexString(digest);
                    if (md.getAlgorithm().equals("MD5")) {
                        checksums.put(Algorithm.MD5, encoded);
                    }

                    if (md.getAlgorithm().equals("SHA-1")) {
                        checksums.put(Algorithm.SHA1, encoded);
                    }
                });
            }

            List<DetectedFormat> fileFormats = ContentDetectionService.getInstance()
                    .detectFormats(path.toFile());
            for (DetectedFormat format : fileFormats) {
                if (format.getId() != null && !format.getId().isEmpty()) {
                    formats.add(createFormatURIString(format));
                }

                if (format.getMimeType() != null && !format.getMimeType().isEmpty()) {
                    formats.add(format.getMimeType());
                }
            }
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
}

---

From source file:org.dataconservancy.ui.dcpmap.DataSetMapper.java

/**
 * Calculates fixity over an InputStream according to the supplied algorithm.
 *
 * @param in         the InputStream//from   ww  w . j a va 2  s. c  o m
 * @param digestAlgo the algorithm used to calculate fixity
 * @return a DcsFixity object encapsulating the calculated fixity and algorithm
 * @throws IOException if there is an error calculating the fixity
 */
private DcsFixity calculateFixity(InputStream in, MessageDigest digestAlgo) throws IOException {
    final HexEncodingDigestListener digestListener = new HexEncodingDigestListener();
    final NullOutputStream devNull = new NullOutputStream();
    final DigestNotificationStream digestIn = new DigestNotificationStream(in, digestAlgo, digestListener);

    IOUtils.copy(digestIn, devNull);

    final String digest = digestListener.getDigest();

    if (digest == null || digest.isEmpty()) {
        throw new IOException("Error calculating fixity for stream: the digest was empty or null.");
    }

    DcsFixity fixity = new DcsFixity();
    fixity.setAlgorithm(digestAlgo.getAlgorithm());
    fixity.setValue(digest);

    return fixity;
}

---

From source file:org.dhatim.fastexcel.Benchmarks.java

private void poiPopulate(org.apache.poi.ss.usermodel.Workbook wb) throws Exception {
    Sheet ws = wb.createSheet("Sheet 1");
    CellStyle dateStyle = wb.createCellStyle();
    dateStyle.setDataFormat(wb.getCreationHelper().createDataFormat().getFormat("yyyy-mm-dd hh:mm:ss"));
    for (int r = 0; r < NB_ROWS; ++r) {
        Row row = ws.createRow(r);//from  ww w .j a v  a2s  .co m
        row.createCell(0).setCellValue(r);
        row.createCell(1).setCellValue(Integer.toString(r % 1000));
        row.createCell(2).setCellValue(r / 87.0);
        Cell c = row.createCell(3);
        c.setCellStyle(dateStyle);
        c.setCellValue(new Date());
    }
    wb.write(new NullOutputStream());
}

---

From source file:org.dhatim.fastexcel.Benchmarks.java

@Benchmark
public void fastExcel() throws Exception {
    Workbook wb = new Workbook(new NullOutputStream(), "Perf", "1.0");
    Worksheet ws = wb.newWorksheet("Sheet 1");
    for (int r = 0; r < NB_ROWS; ++r) {
        ws.value(r, 0, r);// w  ww .j  ava  2  s  . co m
        ws.value(r, 1, Integer.toString(r % 1000));
        ws.value(r, 2, r / 87.0);
        ws.value(r, 3, new Date());
    }
    ws.range(0, 3, NB_ROWS - 1, 3).style().format("yyyy-mm-dd hh:mm:ss").set();
    wb.finish();
}

---

From source file:org.dhatim.fastexcel.Correctness.java

@Test(expected = IllegalArgumentException.class)
public void badVersion() throws Exception {
    Workbook dummy = new Workbook(new NullOutputStream(), "Test", "1.0.1");
}

---

From source file:org.dita.dost.ant.PluginInstallTask.java

private String getFileHash(final File file) {
    try (DigestInputStream digestInputStream = new DigestInputStream(
            new BufferedInputStream(new FileInputStream(file)), MessageDigest.getInstance("SHA-256"))) {
        IOUtils.copy(digestInputStream, new NullOutputStream());
        final MessageDigest digest = digestInputStream.getMessageDigest();
        final byte[] sha256 = digest.digest();
        return printHexBinary(sha256);
    } catch (NoSuchAlgorithmException e) {
        throw new IllegalArgumentException(e);
    } catch (IOException e) {
        throw new BuildException("Failed to calculate file checksum: " + e.getMessage(), e);
    }//  ww  w.  ja v a  2 s.co  m
}

---

From source file:org.docx4j.convert.out.fo.ApacheFORenderer.java

/**
 * For first pass of two pass process, invoke org.apache.fop.apps.FormattingResults which can tell us the number of pages 
 * in each page sequence, and in the document as a whole.
 * //  w w w . j  a v a  2s  .co  m
 * @param fopFactory
 * @param outputFormat
 * @param foDocumentSrc
 * @param placeholderLookup
 * @return
 * @throws Docx4JException
 */
protected FormattingResults calcResults(FopFactory fopFactory, String outputFormat, Source foDocumentSrc,
        PlaceholderReplacementHandler.PlaceholderLookup placeholderLookup) throws Docx4JException {
    Fop fop = null;
    Result result = null;
    try {
        fop = fopFactory.newFop(outputFormat, new NullOutputStream());
        result = new SAXResult(new PlaceholderReplacementHandler(fop.getDefaultHandler(), placeholderLookup));
    } catch (FOPException e) {
        throw new Docx4JException("Exception setting up result for fo transformation: " + e.getMessage(), e);
    }

    Transformer transformer;
    try {
        transformer = XmlUtils.getTransformerFactory().newTransformer();
        transformer.transform(foDocumentSrc, result);
    } catch (TransformerConfigurationException e) {
        throw new Docx4JException("Exception setting up transformer: " + e.getMessage(), e);
    } catch (TransformerException e) {
        throw new Docx4JException("Exception executing transformer: " + e.getMessage(), e);
    }
    return fop.getResults();
}

---

From source file:org.docx4j.convert.out.pdf.viaXSLFO.FopResultUtils.java

public static FormattingResults calcResults(String userConfiguration, String outputFormat, Document document,
        Templates xslt, Map parameters) throws Docx4JException {

    Fop fop = null;//from   w  ww .  j a  v  a2  s .c o  m
    Result result = null;
    try {
        fop = FopFactoryUtil.createFop(userConfiguration, outputFormat, new NullOutputStream());
        result = new SAXResult(fop.getDefaultHandler());
    } catch (FOPException e) {
        throw new Docx4JException("Exception setting up result for fo transformation: " + e.getMessage(), e);
    }
    XmlUtils.transform(document, xslt, parameters, result);
    return fop.getResults();
}

---

From source file:org.docx4j.convert.out.pdf.viaXSLFO.FopResultUtils.java

public static FormattingResults calcResults(String userConfiguration, String outputFormat, Source foDocumentSrc,
        Map<String, Object> parameters) throws Docx4JException {

    Fop fop = null;/*from   www  . j  a  va2  s .  c  o  m*/
    Result result = null;
    try {
        fop = FopFactoryUtil.createFop(userConfiguration, outputFormat, new NullOutputStream());
        result = new SAXResult(fop.getDefaultHandler());
    } catch (FOPException e) {
        throw new Docx4JException("Exception setting up result for fo transformation: " + e.getMessage(), e);
    }

    Transformer transformer;
    try {
        transformer = XmlUtils.getTransformerFactory().newTransformer();
        setupParameters(transformer, parameters);
        transformer.transform(foDocumentSrc, result);
    } catch (TransformerConfigurationException e) {
        throw new Docx4JException("Exception setting up transformer: " + e.getMessage(), e);
    } catch (TransformerException e) {
        throw new Docx4JException("Exception executing transformer: " + e.getMessage(), e);
    }
    return fop.getResults();
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• 28
• 29
• 30
• 31
• 32
• 33
• »