Example usage for java.io File getCanonicalPath

List of usage examples for java.io File getCanonicalPath

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Introduction

In this page you can find the example usage for java.io File getCanonicalPath.

Prototype

public String getCanonicalPath() throws IOException

Source Link

Document

Returns the canonical pathname string of this abstract pathname.

Usage

From source file:hdfs.FileUtil.java

static String execCommand(File f, String... cmd) throws IOException {
    String[] args = new String[cmd.length + 1];
    System.arraycopy(cmd, 0, args, 0, cmd.length);
    args[cmd.length] = f.getCanonicalPath();
    String output = Shell.execCommand(args);
    return output;
}

From source file:com.twitter.elephanttwin.util.HdfsUtils.java

/**
 * Concatenate the content of all HDFS files matching {@code hdfsGlob} into a
 * file {@code localFilename}.//from   w  w  w.j av a2 s.  co m
 *
 * @param hdfsNameNode The name of the Hadoop name node.
 * @param hdfsGlob Files matching this pattern will be fetched.
 * @param localFilename Name of local file to store concatenated content.
 * @return The newly created file.
 * @throws IOException when the file cannot be created/written.
 */
public static File getHdfsFiles(String hdfsNameNode, String hdfsGlob, String localFilename) throws IOException {
    Preconditions.checkNotNull(localFilename);
    Preconditions.checkNotNull(hdfsGlob);
    Preconditions.checkNotNull(hdfsNameNode);
    // init the FS connection and the local file.
    Configuration config = new Configuration();
    config.set(CommonConfigurationKeys.FS_DEFAULT_NAME_KEY, hdfsNameNode);
    FileSystem dfs = FileSystem.get(config);
    File localFile = new File(localFilename);
    FileOutputStream localStream = new FileOutputStream(localFile);

    // get files that need downloading.
    FileStatus[] statuses = dfs.globStatus(new Path(hdfsGlob));
    LOG.info("Pattern " + hdfsGlob + " matched " + statuses.length + " HDFS files, " + "fetching to "
            + localFile.getCanonicalPath() + "...");

    // append each file.
    int copiedChars = 0;
    FSDataInputStream remoteStream = null;
    for (FileStatus status : statuses) {
        Path src = status.getPath();
        try {
            remoteStream = dfs.open(src);
            copiedChars += IOUtils.copy(remoteStream, localStream);
        } catch (IOException e) {
            LOG.severe("Failed to open/copy " + src);
        } finally {
            IOUtils.closeQuietly(remoteStream);
        }
    }
    LOG.info("Fetch " + copiedChars + " bytes to local FS");
    return localFile;
}

From source file:com.aoyetech.fee.commons.utils.FileUtils.java

public static void copyFile(final File srcFile, final File destFile, final boolean preserveFileDate)
        throws IOException {
    if (srcFile == null) {
        throw new NullPointerException("Source must not be null");
    }/*  w w w  . j a v a 2 s. c  om*/
    if (destFile == null) {
        throw new NullPointerException("Destination must not be null");
    }
    if (srcFile.exists() == false) {
        throw new FileNotFoundException("Source '" + srcFile + "' does not exist");
    }
    if (srcFile.isDirectory()) {
        throw new IOException("Source '" + srcFile + "' exists but is a directory");
    }
    if (srcFile.getCanonicalPath().equals(destFile.getCanonicalPath())) {
        throw new IOException("Source '" + srcFile + "' and destination '" + destFile + "' are the same");
    }
    if ((destFile.getParentFile() != null) && (destFile.getParentFile().exists() == false)) {
        if (destFile.getParentFile().mkdirs() == false) {
            throw new IOException("Destination '" + destFile + "' directory cannot be created");
        }
    }
    if (destFile.exists() && (destFile.canWrite() == false)) {
        throw new IOException("Destination '" + destFile + "' exists but is read-only");
    }
    doCopyFile(srcFile, destFile, preserveFileDate);
}

From source file:com.adito.applications.server.FileReplacement.java

static File getTempFile(File near) throws IOException {
    String path = null;/*from  w  w w  .  jav a  2 s  . c om*/
    if (near != null)
        if (near.isFile())
            path = near.getParent();
        else if (near.isDirectory())
            path = near.getPath();

    Random wheel = new Random(); // seeded from the clock
    File tempFile = null;
    do {
        // generate random a number 10,000,000 .. 99,999,999
        int unique = (wheel.nextInt() & Integer.MAX_VALUE) % 90000000 + 10000000;
        tempFile = new File(path, Integer.toString(unique) + ".tmp");
    } while (tempFile.exists());
    // We "finally" found a name not already used. Nearly always the first
    // time.
    // Quickly stake our claim to it by opening/closing it to create it.
    // In theory somebody could have grabbed it in that tiny window since
    // we checked if it exists, but that is highly unlikely.
    new FileOutputStream(tempFile).close();

    // debugging peek at the name generated.
    if (false) {
        System.out.println(tempFile.getCanonicalPath());
    }
    return tempFile;
}

From source file:com.github.fritaly.dualcommander.Utils.java

public static void copyFile(File srcFile, File destFile, boolean preserveFileDate) throws IOException {
    if (srcFile == null) {
        throw new NullPointerException("Source must not be null");
    }/*from   ww  w .  ja va  2  s.  c  o  m*/
    if (destFile == null) {
        throw new NullPointerException("Destination must not be null");
    }
    if (srcFile.exists() == false) {
        throw new FileNotFoundException("Source '" + srcFile + "' does not exist");
    }
    if (srcFile.isDirectory()) {
        throw new IOException("Source '" + srcFile + "' exists but is a directory");
    }
    if (srcFile.getCanonicalPath().equals(destFile.getCanonicalPath())) {
        throw new IOException("Source '" + srcFile + "' and destination '" + destFile + "' are the same");
    }
    File parentFile = destFile.getParentFile();
    if (parentFile != null) {
        if (!parentFile.mkdirs() && !parentFile.isDirectory()) {
            throw new IOException("Destination '" + parentFile + "' directory cannot be created");
        }
    }
    if (destFile.exists() && destFile.canWrite() == false) {
        throw new IOException("Destination '" + destFile + "' exists but is read-only");
    }
    doCopyFile(srcFile, destFile, preserveFileDate);
}

From source file:gov.nih.nci.ncicb.tcga.dcc.common.util.FileUtil.java

/**
 * Expands a tar or tar.gz archive into the given directory
 *
 * @param expandDir the target directory
 * @param tarOrTarGzFilename the name of the archive to expand (must be tar or tar.gz)
 * @throws IOException//from ww w .  ja va  2 s  .c  o m
 */
public static void explodeTarOrTarGz(final File expandDir, final String tarOrTarGzFilename) throws IOException {

    final File file = new File(tarOrTarGzFilename);
    final FileInputStream fStream = new FileInputStream(file);

    String filenameWithoutExtension;
    if (tarOrTarGzFilename.endsWith(ConstantValues.COMPRESSED_ARCHIVE_EXTENSION)) {
        filenameWithoutExtension = getFilenameWithoutExtension(tarOrTarGzFilename,
                ConstantValues.COMPRESSED_ARCHIVE_EXTENSION);
    } else {
        filenameWithoutExtension = getFilenameWithoutExtension(tarOrTarGzFilename,
                ConstantValues.UNCOMPRESSED_ARCHIVE_EXTENSION);
    }

    GZIPInputStream gzipStream = null;
    TarInputStream tin = null;
    TarEntry tarEntry;
    final StringBuffer errorMsg = new StringBuffer();
    try {
        //noinspection IOResourceOpenedButNotSafelyClosed

        if (tarOrTarGzFilename.endsWith(ConstantValues.COMPRESSED_ARCHIVE_EXTENSION)) {
            gzipStream = new GZIPInputStream(fStream);
            tin = new TarInputStream(gzipStream);
        } else {
            tin = new TarInputStream(fStream);
        }

        while ((tarEntry = tin.getNextEntry()) != null) {
            String entryName = tarEntry.getName();
            final File entryFile = new File(entryName);

            if (!tarEntry.isDirectory()) {
                if (!entryName.startsWith(filenameWithoutExtension)) {
                    errorMsg.append(
                            "Archive files should be contained inside a single directory with the same name as the archive.\n");
                }

                // extract out just the filename of the entry
                if (entryFile.getCanonicalPath().lastIndexOf(File.separator) != -1) {
                    entryName = entryFile.getCanonicalPath()
                            .substring(entryFile.getCanonicalPath().lastIndexOf(File.separator));
                }
                final File destPath = new File(expandDir, entryName);
                FileOutputStream fout = new FileOutputStream(destPath);
                try {
                    tin.copyEntryContents(fout);
                } finally {
                    fout.flush();
                    fout.close();
                    fout = null;
                }
            } else {
                if (!entryName.equals(filenameWithoutExtension)
                        && !entryName.equals(filenameWithoutExtension + File.separator)
                        && !entryName.equals(filenameWithoutExtension + "/")) {

                    String t = filenameWithoutExtension + File.separator;
                    errorMsg.append("Archive contains a non-standard directory '").append(entryName).append(
                            "'.  Archive files should be contained inside a single directory with the same name as the archive.\n");
                }
            }
        }
    } finally {
        IOUtils.closeQuietly(tin);
        IOUtils.closeQuietly(gzipStream);
        IOUtils.closeQuietly(fStream);
        if (errorMsg.length() > 0)
            throw new IOException(errorMsg.toString());
    }
}

From source file:com.twinsoft.convertigo.engine.localbuild.BuildLocally.java

/***
 * /*from  ww w. j  a  v a 2 s  .  com*/
 * @param paths
 * @param command
 * @return
 * @throws IOException
 */
private static String getFullPath(String paths, String command) throws IOException {
    for (String path : paths.split(Pattern.quote(File.pathSeparator))) {
        File candidate = new File(path, command);
        if (candidate.exists()) {
            return candidate.getCanonicalPath();
        }
    }
    return null;
}

From source file:com.googlecode.dex2jar.test.TestUtils.java

public static File dex(List<File> files, File distFile) throws Exception {
    String dxJar = "src/test/resources/dx.jar";
    File dxFile = new File(dxJar);
    if (!dxFile.exists()) {
        throw new RuntimeException("dx.jar?");
    }//w w  w .j av  a2 s.  c o m
    URLClassLoader cl = new URLClassLoader(new URL[] { dxFile.toURI().toURL() });
    Class<?> c = cl.loadClass("com.android.dx.command.Main");
    Method m = c.getMethod("main", String[].class);

    if (distFile == null) {
        distFile = File.createTempFile("dex", ".dex");
    }
    List<String> args = new ArrayList<String>();
    args.addAll(Arrays.asList("--dex", "--no-strict", "--output=" + distFile.getCanonicalPath()));
    for (File f : files) {
        args.add(f.getCanonicalPath());
    }
    m.invoke(null, new Object[] { args.toArray(new String[0]) });
    return distFile;
}

From source file:com.symbian.driver.core.ResourceLoader.java

/**
 * Loads TDv1 XML files.//ww w .  j  ava  2 s . c  o  m
 * 
 * @param aXmlRoot The location of the XML root for TDv1.
 * @param aRootAddress The URI to the Execute to load.
 * @return The task corresponding to the URI specfied in the XML Root directory.
 * @throws ParseException If there was a problem with getting the configuration.
 * @throws FileNotFoundException IF the XML root directory is invalid.
 * @throws IOException If the URI or XML root directory is invalid.
 */
public static Task loadOldXml(File aXmlRoot, URI aRootAddress)
        throws ParseException, FileNotFoundException, IOException {
    LOGGER.info("Importing Old TestDriver v1 XML at: " + aXmlRoot.getAbsolutePath());

    // Create Document Root
    DocumentRoot lDocumentRoot = DriverFactory.eINSTANCE.createDocumentRoot();
    // Register the factory
    Driver lDriver = DriverFactory.eINSTANCE.createDriver();
    // Import Old XML to new XML
    lDriver.setTask(new FrameworkGenerator(aXmlRoot).buildEmfModel());
    lDocumentRoot.setDriver(lDriver);

    File lSaveFile = null;
    if (aXmlRoot.isDirectory()) {
        lSaveFile = new File(aXmlRoot.getCanonicalPath() + File.separator + aXmlRoot.getName() + ".driver");
    } else if (aXmlRoot.isFile()) {
        lSaveFile = new File(aXmlRoot.toString().replaceAll("\\.xml", ".driver"));
    }

    DriverResourceImpl lResource = (DriverResourceImpl) iResourceSet
            .createResource(URI.createFileURI(lSaveFile.getAbsolutePath()));
    lResource.getContents().add(lDocumentRoot);

    Map lSaveOptions = new HashMap();
    lSaveOptions.put(XMLResource.OPTION_ENCODING, "UTF-8");

    lResource.save(new FileOutputStream(lSaveFile), lSaveOptions);
    LOGGER.info("Created TestDriver v2 XML file at: " + lSaveFile.getCanonicalPath());

    if (aRootAddress != null) {
        String lTempFragement = aRootAddress.toString();
        aRootAddress = URI.createFileURI(lSaveFile.getCanonicalPath());
        aRootAddress = aRootAddress
                .appendFragment(lTempFragement.charAt(0) == '#' ? lTempFragement.substring(1) : lTempFragement);

        TDConfig.getInstance().setPreferenceURI(TDConfig.ENTRY_POINT_ADDRESS, aRootAddress);

        ExtendedDriverValidator.validator(lResource);

        return lResource.getTask(aRootAddress.fragment());
    }

    return ((DocumentRoot) lResource.getContents().get(0)).getDriver().getTask();
}

From source file:com.nary.io.FileUtils.java

/**
 * resolveNativeLibPath/*from   ww  w . j a  va2s.  c  o m*/
 */
public static String resolveNativeLibPath(String nativeLibPath) throws IOException {
    if (new cfmlURI(nativeLibPath).isRealFile()) {
        File nativeLib = cfEngine.getResolvedFile(nativeLibPath);
        if (!nativeLib.exists()) {
            throw new IOException("Native library does not exist: " + nativeLibPath);
        }
        return nativeLib.getCanonicalPath();
    }

    // copy native lib to temporary file, and return path to temp file
    InputStream is = cfEngine.thisServletContext.getResourceAsStream(nativeLibPath);
    if (is == null) {
        throw new IOException("Could not load native library: " + nativeLibPath);
    }
    File tempFile = File.createTempFile("LIB", (cfEngine.WINDOWS ? ".dll" : ".so"),
            cfEngine.thisPlatform.getFileIO().getTempDirectory());
    OutputStream fos = cfEngine.thisPlatform.getFileIO().getFileOutputStream(tempFile);

    StreamUtil.copyTo(is, fos);

    return tempFile.getCanonicalPath();
}