Example usage for java.io File canWrite

Introduction

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

Prototype

public boolean canWrite() 

Source Link

Document

Tests whether the application can modify the file denoted by this abstract pathname.

Usage

From source file:eu.stratosphere.nephele.taskmanager.TaskManager.java

/**
 * Checks, whether the given strings describe existing directories that are writable. If that is not
 * the case, an exception is raised.//from   www  .j  a  va2 s.  co  m
 * 
 * @param tempDirs
 *        An array of strings which are checked to be paths to writable directories.
 * @throws Exception
 *         Thrown, if any of the mentioned checks fails.
 */
private static final void checkTempDirs(final String[] tempDirs) throws Exception {

    for (int i = 0; i < tempDirs.length; ++i) {

        final String dir = tempDirs[i];
        if (dir == null) {
            throw new Exception("Temporary file directory #" + (i + 1) + " is null.");
        }

        final File f = new File(dir);

        if (!f.exists()) {
            throw new Exception("Temporary file directory '" + f.getAbsolutePath() + "' does not exist.");
        }

        if (!f.isDirectory()) {
            throw new Exception("Temporary file directory '" + f.getAbsolutePath() + "' is not a directory.");
        }

        if (!f.canWrite()) {
            throw new Exception("Temporary file directory '" + f.getAbsolutePath() + "' is not writable.");
        }
    }
}

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From source file:RolloverFileOutputStream.java

private synchronized void setFile() throws IOException {
    // Check directory
    File file = new File(_filename);
    _filename = file.getCanonicalPath();
    file = new File(_filename);
    File dir = new File(file.getParent());
    if (!dir.isDirectory() || !dir.canWrite())
        throw new IOException("Cannot write log directory " + dir);

    Date now = new Date();

    // Is this a rollover file?
    String filename = file.getName();
    int i = filename.toLowerCase().indexOf(YYYY_MM_DD);
    if (i >= 0) {
        file = new File(dir, filename.substring(0, i) + _fileDateFormat.format(now)
                + filename.substring(i + YYYY_MM_DD.length()));
    }//from   w w  w.  j ava 2 s .  co m

    if (file.exists() && !file.canWrite())
        throw new IOException("Cannot write log file " + file);

    // Do we need to change the output stream?
    if (out == null || !file.equals(_file)) {
        // Yep
        _file = file;
        if (!_append && file.exists())
            file.renameTo(new File(file.toString() + "." + _fileBackupFormat.format(now)));
        OutputStream oldOut = out;
        out = new FileOutputStream(file.toString(), _append);
        if (oldOut != null)
            oldOut.close();
        // if(log.isDebugEnabled())log.debug("Opened "+_file);
    }
}

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From source file:com.amazonaws.mturk.cmd.MakeTemplate.java

private void copyTemplateFile(String sourceRoot, String targetRoot, String extension) throws Exception {
    String inputFileName = sourceRoot + extension;
    String outputFileName = targetRoot + extension;

    System.out.println("Copying resource file: " + outputFileName);

    File inputFile = new File(inputFileName);
    if (!inputFile.exists() || !inputFile.canRead()) {
        throw new Exception("Could not read from the file " + inputFileName);
    }/*from w  ww .  j  a va 2  s  . co m*/

    File outputFile = new File(outputFileName);
    if (!outputFile.exists()) {
        if (!outputFile.createNewFile() || !outputFile.canWrite())
            throw new Exception("Could not write to the file " + outputFileName);
    }

    // copy file
    FileReader in = new FileReader(inputFile);
    FileWriter out = new FileWriter(outputFile);

    try {
        char[] buffer = new char[1024];
        int nread = 0;
        while ((nread = in.read(buffer)) != -1) {
            out.write(buffer, 0, nread);
        }
    } finally {
        in.close();
        out.close();
    }
}

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From source file:com.piaoyou.util.FileUtil.java

public static void copyFile(File org, File des, boolean overwrite) throws IOException {

    if (!org.exists()) {
        throw new FileNotFoundException("Cannot find the source file: " + org.getAbsolutePath());
    }//from   w w  w .j  ava2 s .  c o  m
    if (!org.canRead()) {
        throw new IOException("Cannot read the source file: " + org.getAbsolutePath());
    }

    if (overwrite == false) {
        if (des.exists()) {
            return;
        }
    } else {
        if (des.exists()) {
            if (!des.canWrite()) {
                throw new IOException("Cannot write the destination file: " + des.getAbsolutePath());
            }
        } else {
            if (!des.createNewFile()) {
                throw new IOException("Cannot write the destination file: " + des.getAbsolutePath());
            }
        }
    }

    BufferedInputStream inputStream = null;
    BufferedOutputStream outputStream = null;
    byte[] block = new byte[1024];
    try {
        inputStream = new BufferedInputStream(new FileInputStream(org));
        outputStream = new BufferedOutputStream(new FileOutputStream(des));
        while (true) {
            int readLength = inputStream.read(block);
            if (readLength == -1)
                break;// end of file
            outputStream.write(block, 0, readLength);
        }
    } finally {
        if (inputStream != null) {
            try {
                inputStream.close();
            } catch (IOException ex) {
                log.error("Cannot close stream", ex);
            }
        }
        if (outputStream != null) {
            try {
                outputStream.close();
            } catch (IOException ex) {
                log.error("Cannot close stream", ex);
            }
        }
    }
}

---

From source file:com.technicolor.qeo.codegen.Main.java

private File getOutputDirectory(String dirStr) {
    File dir = new File(dirStr);

    if (dir.exists()) {
        if (!dir.isDirectory()) {
            usageExit("Output argument is not a directory: " + dirStr);
        } else if (!dir.canWrite()) {
            usageExit("Output directory is not writable: " + dirStr);
        }//from  w  w w  . j av a  2s  .com
    } else {
        if (!dir.mkdirs()) {
            usageExit("Unable to create output directory: " + dirStr);
        }
    }
    return dir;
}

---

From source file:ddf.catalog.backup.CatalogBackupPlugin.java

private void validateDirectory(File directory) {

    if (!(directory.isDirectory() && directory.canWrite())) {
        throw new IllegalArgumentException(
                "Directory " + directory.getAbsolutePath() + " does not exist or is not writable");
    }/*from   w w  w  .  j  a  v  a  2 s .  c  om*/
}

---

From source file:de.uniwue.info6.database.jaxb.ScenarioExporter.java

/**
 *
 *
 * @param files//from  w ww. j  av a 2s  .  co m
 * @param zipfile
 * @return
 */
private File zip(List<File> files, File zipfile) {
    byte[] buf = new byte[1024];
    try {
        ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipfile));
        for (int i = 0; i < files.size(); i++) {
            FileInputStream in = new FileInputStream(files.get(i));
            out.putNextEntry(new ZipEntry(files.get(i).getName()));
            int len;
            while ((len = in.read(buf)) > 0) {
                out.write(buf, 0, len);
            }
            out.closeEntry();
            in.close();
        }
        out.close();
        for (File file : files) {
            if (file.isFile() && file.exists() && file.canWrite()) {
                file.delete();
            }
        }
        return zipfile;
    } catch (Exception e) {
        LOGGER.error("FAILED TO ZIP FILES", e);
    }
    return null;
}

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From source file:com.fseport.sftp.SftpUtil.java

/**
 * Should be moved to a util class that is not based on an endpoint... TODO: why
 * is this method synchronized?//w ww  .  j av a2s.  c  o m
 * 
 * @param input
 * @param destination
 * @throws IOException
 */
public synchronized void copyStreamToFile(InputStream input, File destination) throws IOException {
    try {
        File folder = destination.getParentFile();
        if (!folder.exists()) {
            throw new IOException("Destination folder does not exist: " + folder);
        }

        if (!folder.canWrite()) {
            throw new IOException("Destination folder is not writeable: " + folder);
        }

        FileOutputStream output = new FileOutputStream(destination);
        try {
            IOUtils.copy(input, output);
        } finally {
            if (output != null)
                output.close();
        }
    } catch (IOException ex) {
        setErrorOccurredOnInputStream(input);
        throw ex;
    } catch (RuntimeException ex) {
        setErrorOccurredOnInputStream(input);
        throw ex;
    } finally {
        if (input != null)
            input.close();
    }
}

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From source file:com.lazerycode.selenium.filedownloader.FileDownloader.java

/**
 * Perform the file/image download.//from www.jav  a2  s.c  o  m
 *
 * @param element
 * @param attribute
 * @return
 * @throws IOException
 * @throws NullPointerException
 */
private String downloader(WebElement element, String attribute, String Filename)
        throws IOException, NullPointerException, URISyntaxException {
    String fileToDownloadLocation = element.getAttribute(attribute);
    if (fileToDownloadLocation.trim().equals(""))
        throw new NullPointerException("The element you have specified does not link to anything!");

    URL fileToDownload = new URL(fileToDownloadLocation);
    //changed by Raul
    File downloadedFile = new File(Filename);
    //+ " fileToDownload.getFile().replaceFirst("/|\\\\", "").replace("?", ""));

    if (downloadedFile.canWrite() == false)
        downloadedFile.setWritable(true);

    HttpClient client = new DefaultHttpClient();
    BasicHttpContext localContext = new BasicHttpContext();

    //LOG.info("Mimic WebDriver cookie state: " + this.mimicWebDriverCookieState);
    if (this.mimicWebDriverCookieState) {
        localContext.setAttribute(ClientContext.COOKIE_STORE,
                mimicCookieState(this.driver.manage().getCookies()));
    }

    HttpGet httpget = new HttpGet(fileToDownload.toURI());
    HttpParams httpRequestParameters = httpget.getParams();
    httpRequestParameters.setParameter(ClientPNames.HANDLE_REDIRECTS, this.followRedirects);
    httpget.setParams(httpRequestParameters);

    // LOG.info("Sending GET request for: " + httpget.getURI());
    HttpResponse response = client.execute(httpget, localContext);
    this.httpStatusOfLastDownloadAttempt = response.getStatusLine().getStatusCode();
    //LOG.info("HTTP GET request status: " + this.httpStatusOfLastDownloadAttempt);
    //LOG.info("Downloading file: " + downloadedFile.getName());
    FileUtils.copyInputStreamToFile(response.getEntity().getContent(), downloadedFile);
    response.getEntity().getContent().close();

    String downloadedFileAbsolutePath = downloadedFile.getAbsolutePath();
    // LOG.info("File downloaded to '" + downloadedFileAbsolutePath + "'");

    return downloadedFileAbsolutePath;
}

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From source file:io.jenkins.blueocean.blueocean_git_pipeline.GitCacheCloneReadSaveRequest.java

@Override
void save() throws IOException {
    invokeOnScm(new GitSCMFileSystem.FSFunction<Void>() {
        @Override/*from w  w  w  .ja v a 2 s . c  o  m*/
        public Void invoke(Repository repository) throws IOException, InterruptedException {
            Git activeRepo = getActiveRepository(repository);
            Repository repo = activeRepo.getRepository();
            File repoDir = repo.getDirectory().getParentFile();
            log.fine("Repo cloned to: " + repoDir.getCanonicalPath());
            try {
                File f = new File(repoDir, filePath);
                if (!f.exists() || f.canWrite()) {
                    try (Writer w = new OutputStreamWriter(new FileOutputStream(f), "utf-8")) {
                        w.write(new String(contents, "utf-8"));
                    }

                    try {
                        AddCommand add = activeRepo.add();
                        add.addFilepattern(filePath);
                        add.call();

                        CommitCommand commit = activeRepo.commit();
                        commit.setMessage(commitMessage);
                        commit.call();

                        // Push the changes
                        GitUtils.push(gitSource.getRemote(), repo, getCredential(),
                                LOCAL_REF_BASE + sourceBranch, REMOTE_REF_BASE + branch);
                    } catch (GitAPIException ex) {
                        throw new ServiceException.UnexpectedErrorException(ex.getMessage(), ex);
                    }

                    return null;
                }
                throw new ServiceException.UnexpectedErrorException("Unable to write " + filePath);
            } finally {
                FileUtils.deleteDirectory(repoDir);
            }
        }
    });
}

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