Example usage for java.io RandomAccessFile write

List of usage examples for java.io RandomAccessFile write

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Introduction

In this page you can find the example usage for java.io RandomAccessFile write.

Prototype

public void write(byte b[]) throws IOException

Source Link

Document

Writes b.length bytes from the specified byte array to this file, starting at the current file pointer.

Usage

From source file:org.andrewberman.sync.InheritMe.java

void downloadURLToFile(String url, File destFile) throws Exception {
    String origUrl = url;//from   w ww  .  j  a  v a 2  s. c  o  m
    File origFile = destFile;

    Thread.sleep(200);
    try {
        destFile.getParentFile().mkdirs();
        destFile.createNewFile();
    } catch (Exception e) {
        errS.println("Error creating new file: " + destFile + " . Skipping this PDF...");
        throw e;
    }
    out.print("   Downloading: ");

    url = StringEscapeUtils.escapeHtml(url);
    System.out.println(url);
    url = url.replaceAll(" ", "%20");
    GetMethod get = new GetMethod(url);
    ByteArrayOutputStream outS = new ByteArrayOutputStream();
    try {
        System.out.println("     Executing get...");
        httpclient.executeMethod(get);
        System.out.println("     Done!");

        BufferedInputStream in = new BufferedInputStream(get.getResponseBodyAsStream());
        int i = 0;
        int ind = 0;
        long length = get.getResponseContentLength();
        int starRatio = (int) length / 20;
        int numStars = 0;
        while ((i = in.read()) != -1) {
            if (length != -1 && ind % starRatio == 0) {
                status(" Downloading..." + repeat(".", ++numStars));
                out.print("*");
            }
            if (ind % 512 == 0) {
                waitOrExit();
            }
            outS.write(i);
            ind++;
        }

        in.close();
        outS.flush();

        RandomAccessFile raf = new RandomAccessFile(destFile, "rw");
        raf.write(outS.toByteArray());
        //         raf.write(get.getResponseBody());
        raf.close();
    } catch (java.net.SocketTimeoutException ste) {
        ste.printStackTrace();
        if (this.retriesLeft > 0) {
            this.retriesLeft--;
            System.out.println("Retries left: " + this.retriesLeft);
            this.downloadURLToFile(origUrl, origFile);
        } else {
            throw ste;
        }
    } finally {
        outS.close();
        get.releaseConnection();
        outS = null;
        out.print("\n");
    }
}

From source file:org.interreg.docexplore.authoring.AuthoringMenu.java

void writeRecent() {
    try {//  w ww .j  a  va  2 s. co m
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ObjectOutputStream oos = new ObjectOutputStream(baos);
        oos.writeObject(recent);
        oos.flush();
        RandomAccessFile file = new RandomAccessFile(new File(DocExploreTool.getHomeDir(), "ATRecent"), "rw");
        file.setLength(0);
        file.write(baos.toByteArray());
        file.close();
        oos.close();

        //         ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(new File("ATRecent"), false));
        //         out.writeObject(recent);
        //         out.close();
    } catch (Exception e) {
        ErrorHandler.defaultHandler.submit(e, true);
    }
}

From source file:au.org.ala.layers.grid.GridCacheBuilder.java

private static void writeGroupGRI(File file, ArrayList<Grid> group) {
    Grid g = group.get(0);/*w  ww.  j  a v a  2  s . c  o  m*/
    RandomAccessFile[] raf = new RandomAccessFile[group.size()];
    RandomAccessFile output = null;

    try {
        output = new RandomAccessFile(file, "rw");

        for (int i = 0; i < group.size(); i++) {
            raf[i] = new RandomAccessFile(group.get(i).filename + ".gri", "r");
        }

        int length = g.ncols * g.nrows;
        int size = 4;
        byte[] b = new byte[size * group.size() * g.ncols];
        float noDataValue = Float.MAX_VALUE * -1;

        byte[] bi = new byte[g.ncols * 8];
        float[][] rows = new float[group.size()][g.ncols];

        for (int i = 0; i < g.nrows; i++) {
            //read
            for (int j = 0; j < raf.length; j++) {
                nextRowOfFloats(rows[j], group.get(j).datatype, group.get(j).byteorderLSB, g.ncols, raf[j], bi,
                        (float) g.nodatavalue);
            }

            //write
            ByteBuffer bb = ByteBuffer.wrap(b);
            bb.order(ByteOrder.LITTLE_ENDIAN);

            for (int k = 0; k < g.ncols; k++) {
                for (int j = 0; j < raf.length; j++) {
                    //float f = getNextValue(raf[j], group.get(j));
                    float f = rows[j][k];
                    if (Float.isNaN(f)) {
                        bb.putFloat(noDataValue);
                    } else {
                        bb.putFloat(f);
                    }
                }
            }
            output.write(b);
        }
    } catch (IOException e) {
        logger.error(e.getMessage(), e);
    } finally {
        if (output != null) {
            try {
                output.close();
            } catch (Exception e) {
                logger.error(e.getMessage(), e);
            }
        }
        for (int i = 0; i < raf.length; i++) {
            if (raf[i] != null) {
                try {
                    raf[i].close();
                } catch (Exception e) {
                    logger.error(e.getMessage(), e);
                }
            }
        }
    }
}

From source file:com.freesundance.contacts.google.ContactsExample.java

public void listContacts() throws IOException, ServiceException, GeneralSecurityException {

    service = authenticate();//from  w w w  .  j  a v a  2 s .  c  o  m

    ContactFeed resultFeed = service.getFeed(feedUrl, ContactFeed.class);
    // Print the results
    LOG.debug(resultFeed.getTitle().getPlainText());
    for (ContactEntry entry : resultFeed.getEntries()) {
        printContact(entry);
        // Since 2.0, the photo link is always there, the presence of an actual
        // photo is indicated by the presence of an ETag.
        Link photoLink = entry.getLink("http://schemas.google.com/contacts/2008/rel#photo", "image/*");
        if (photoLink.getEtag() != null) {
            Service.GDataRequest request = service.createLinkQueryRequest(photoLink);
            request.execute();
            InputStream in = request.getResponseStream();
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            RandomAccessFile file = new RandomAccessFile("/tmp/" + entry.getSelfLink().getHref()
                    .substring(entry.getSelfLink().getHref().lastIndexOf('/') + 1), "rw");
            byte[] buffer = new byte[4096];
            for (int read = 0; (read = in.read(buffer)) != -1; out.write(buffer, 0, read)) {
            }
            file.write(out.toByteArray());
            file.close();
            in.close();
            request.end();
        }
        LOG.debug("Total: " + resultFeed.getEntries().size() + " entries found");
    }
}

From source file:com.tencent.wcdb.sample.repairdb.MainActivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Extract test database from assets.
    new AsyncTask<Void, Void, Void>() {
        @Override/*w w w  .j av  a  2  s.  c o m*/
        protected Void doInBackground(Void... params) {
            File dbFile = getDatabasePath(DBHelper.DATABASE_NAME);

            if (!dbFile.exists()) {
                dbFile.getParentFile().mkdirs();

                InputStream in = null;
                OutputStream out = null;
                try {
                    byte[] buffer = new byte[1024];
                    in = getAssets().open(DBHelper.DATABASE_NAME);
                    out = new FileOutputStream(dbFile);
                    int len;
                    while ((len = in.read(buffer)) != -1) {
                        out.write(buffer, 0, len);
                    }
                } catch (IOException e) {
                    throw new RuntimeException(e);
                } finally {
                    if (in != null)
                        try {
                            in.close();
                        } catch (IOException e) {
                        }
                    if (out != null)
                        try {
                            out.close();
                        } catch (IOException e) {
                        }
                }
            }
            return null;
        }
    }.execute();

    setContentView(R.layout.activity_main);

    mListView = (ListView) findViewById(R.id.list);
    mAdapter = new SimpleCursorAdapter(this, R.layout.main_listitem, null, new String[] { "a", "b" },
            new int[] { R.id.list_tv_a, R.id.list_tv_b }, 0);

    mListView.setAdapter(mAdapter);

    findViewById(R.id.btn_init_db).setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            new AsyncTask<Void, Void, SQLiteException>() {
                @Override
                protected void onPreExecute() {
                    mAdapter.changeCursor(null);
                }

                @Override
                protected SQLiteException doInBackground(Void... params) {
                    if (mDB != null && mDB.isOpen()) {
                        mDBHelper.close();
                        mDB = null;
                    }

                    try {
                        mDBHelper.setWriteAheadLoggingEnabled(true);
                        mDB = mDBHelper.getWritableDatabase();

                        // After successfully opened the database, backup its master info.
                        RepairKit.MasterInfo.save(mDB, mDB.getPath() + "-mbak", DBHelper.PASSPHRASE);
                    } catch (SQLiteException e) {
                        // Failed to open database, probably due to corruption.
                        mDB = null;
                        return e;
                    }

                    return null;
                }

                @Override
                protected void onPostExecute(SQLiteException e) {
                    if (e == null) {
                        // Database is successfully opened, query and refresh ListView.
                        Cursor cursor = mDB.rawQuery("SELECT rowid as _id, a, b FROM t1;", null);
                        mAdapter.changeCursor(cursor);

                        Toast.makeText(MainActivity.this, "Database is successfully opened.",
                                Toast.LENGTH_SHORT).show();
                    } else {
                        // Database could not be opened, show toast.
                        Toast.makeText(MainActivity.this,
                                "Database cannot be opened, exception: " + e.getMessage(), Toast.LENGTH_LONG)
                                .show();
                    }
                }
            }.execute();
        }
    });

    findViewById(R.id.btn_corrupt_db).setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            new AsyncTask<Void, Void, Exception>() {
                @Override
                protected void onPreExecute() {
                    mAdapter.changeCursor(null);
                }

                @Override
                protected Exception doInBackground(Void... params) {
                    if (mDB != null && mDB.isOpen()) {
                        mDBHelper.close();
                        mDB = null;
                    }

                    // Write random noise to the first page to corrupt the database.
                    RandomAccessFile raf = null;
                    try {
                        File dbFile = getDatabasePath(DBHelper.DATABASE_NAME);
                        raf = new RandomAccessFile(dbFile, "rw");
                        byte[] buffer = new byte[1024];
                        new Random().nextBytes(buffer);
                        raf.seek(0);
                        raf.write(buffer);
                    } catch (IOException e) {
                        return e;
                    } finally {
                        if (raf != null)
                            try {
                                raf.close();
                            } catch (IOException e) {
                            }
                    }

                    return null;
                }

                @Override
                protected void onPostExecute(Exception e) {
                    if (e == null) {
                        Toast.makeText(MainActivity.this, "Database is now CORRUPTED!", Toast.LENGTH_SHORT)
                                .show();
                    } else {
                        Toast.makeText(MainActivity.this, "Unable to overwrite database: " + e.getMessage(),
                                Toast.LENGTH_LONG).show();
                    }
                }
            }.execute();
        }
    });

    findViewById(R.id.btn_repair_db).setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            new AsyncTask<Void, Void, SQLiteException>() {
                @Override
                protected void onPreExecute() {
                    mAdapter.changeCursor(null);
                }

                @Override
                protected SQLiteException doInBackground(Void... params) {
                    if (mDB != null && mDB.isOpen()) {
                        mDBHelper.close();
                        mDB = null;
                    }

                    RepairKit.MasterInfo master = null;
                    File dbFile = getDatabasePath(DBHelper.DATABASE_NAME);
                    File masterFile = new File(dbFile.getPath() + "-mbak");
                    File newDbFile = getDatabasePath(DBHelper.DATABASE_NAME + "-recover");

                    if (masterFile.exists()) {
                        try {
                            master = RepairKit.MasterInfo.load(masterFile.getPath(), DBHelper.PASSPHRASE, null);
                        } catch (SQLiteException e) {
                            // Could not load master info. Maybe backup file itself corrupted?
                        }
                    }

                    RepairKit repair = null;
                    try {
                        repair = new RepairKit(dbFile.getPath(), // corrupted database file
                                DBHelper.PASSPHRASE, // passphrase to the database
                                DBHelper.CIPHER_SPEC, // cipher spec to the database
                                master // backup master info just loaded
                        );

                        if (newDbFile.exists())
                            newDbFile.delete();

                        SQLiteDatabase newDb = SQLiteDatabase.openOrCreateDatabase(newDbFile,
                                DBHelper.PASSPHRASE, DBHelper.CIPHER_SPEC, null, DBHelper.ERROR_HANDLER);
                        boolean result = repair.output(newDb, 0);
                        if (!result) {
                            throw new SQLiteException("Repair returns false on output.");
                        }

                        newDb.setVersion(DBHelper.DATABASE_VERSION);
                        newDb.close();
                        repair.release();
                        repair = null;

                        if (!dbFile.delete() || !newDbFile.renameTo(dbFile))
                            throw new SQLiteException("Cannot rename database.");
                    } catch (SQLiteException e) {
                        return e;
                    } finally {
                        if (repair != null)
                            repair.release();
                    }

                    return null;
                }

                @Override
                protected void onPostExecute(SQLiteException e) {
                    if (e == null) {
                        Toast.makeText(MainActivity.this, "Repair succeeded.", Toast.LENGTH_SHORT).show();
                    } else {
                        Toast.makeText(MainActivity.this, "Repair failed: " + e.getMessage(), Toast.LENGTH_LONG)
                                .show();
                    }
                }
            }.execute();
        }
    });
}

From source file:org.apache.flume.channel.file.TestFileChannelRestart.java

private void doTestCorruptInflights(String name, boolean backup) throws Exception {
    Map<String, String> overrides = Maps.newHashMap();
    overrides.put(FileChannelConfiguration.USE_DUAL_CHECKPOINTS, String.valueOf(backup));
    channel = createFileChannel(overrides);
    channel.start();/*www.  j  a v a  2s  . c  o  m*/
    Assert.assertTrue(channel.isOpen());
    final Set<String> in1 = putEvents(channel, "restart-", 10, 100);
    Assert.assertEquals(100, in1.size());
    Executors.newSingleThreadScheduledExecutor().submit(new Runnable() {
        @Override
        public void run() {
            Transaction tx = channel.getTransaction();
            Set<String> out1 = takeWithoutCommit(channel, tx, 100);
            Assert.assertEquals(100, out1.size());
        }
    });
    Transaction tx = channel.getTransaction();
    Set<String> in2 = putWithoutCommit(channel, tx, "restart", 100);
    Assert.assertEquals(100, in2.size());
    forceCheckpoint(channel);
    if (backup) {
        Thread.sleep(2000);
    }
    tx.commit();
    tx.close();
    channel.stop();
    File inflight = new File(checkpointDir, name);
    RandomAccessFile writer = new RandomAccessFile(inflight, "rw");
    writer.write(new Random().nextInt());
    writer.close();
    channel = createFileChannel(overrides);
    channel.start();
    Assert.assertTrue(channel.isOpen());
    Assert.assertTrue(!backup || channel.checkpointBackupRestored());
    Set<String> out = consumeChannel(channel);
    in1.addAll(in2);
    compareInputAndOut(in1, out);
}

From source file:com.asakusafw.runtime.util.lock.LocalFileLockProvider.java

@Override
public LocalFileLockObject<T> tryLock(T target) throws IOException {
    if (baseDirectory.mkdirs() == false && baseDirectory.isDirectory() == false) {
        throw new IOException(MessageFormat.format("Failed to create lock directory: {0}", baseDirectory));
    }//from  ww w.  j  a va2 s.co m
    String fileName = String.format("%08x.lck", target == null ? -1 : target.hashCode()); //$NON-NLS-1$
    File lockFile = new File(baseDirectory, fileName);
    RandomAccessFile fd = new RandomAccessFile(lockFile, "rw"); //$NON-NLS-1$
    boolean success = false;
    try {
        if (LOG.isDebugEnabled()) {
            LOG.debug(MessageFormat.format("Start to acquire lock for \"{0}\" ({1})", //$NON-NLS-1$
                    target, lockFile));
        }
        FileLock lockEntity = getLock(target, lockFile, fd);
        if (lockEntity == null) {
            return null;
        } else {
            if (LOG.isDebugEnabled()) {
                LOG.debug(MessageFormat.format("Finished to acquire lock for \"{0}\" ({1})", //$NON-NLS-1$
                        target, lockFile));
            }
            try {
                fd.seek(0L);
                fd.setLength(0L);
                fd.write(String.valueOf(target).getBytes(ENCODING));
                success = true;
                return new LocalFileLockObject<>(target, lockFile, fd, lockEntity);
            } finally {
                if (success == false) {
                    lockEntity.release();
                }
            }
        }
    } finally {
        if (success == false) {
            fd.close();
        }
    }
}

From source file:org.wso2.msf4j.internal.router.HttpServerTest.java

protected void testStreamUpload(int size) throws IOException {
    //create a random file to be uploaded.
    File fname = tmpFolder.newFile();
    RandomAccessFile randf = new RandomAccessFile(fname, "rw");
    String contentStr = IntStream.range(0, size).mapToObj(value -> String.valueOf((int) (Math.random() * 1000)))
            .collect(Collectors.joining(""));
    randf.write(contentStr.getBytes(Charsets.UTF_8));
    randf.close();//w w w.j  a v  a2s.  com

    //test stream upload
    HttpURLConnection urlConn = request("/test/v1/stream/upload", HttpMethod.PUT);
    Files.copy(fname, urlConn.getOutputStream());
    Assert.assertEquals(200, urlConn.getResponseCode());
    String contentFromServer = getContent(urlConn);
    Assert.assertEquals(contentStr, contentFromServer);
    urlConn.disconnect();
}

From source file:org.kchine.rpf.PoolUtils.java

public static void killLocalWinProcess(String processId, boolean isKILLSIG) throws Exception {

    String killpath = System.getProperty("java.io.tmpdir") + "/rpf/WinTools/" + "kill.exe";
    File killFile = new File(killpath);
    if (!killFile.exists()) {
        killFile.getParentFile().mkdirs();
        InputStream is = PoolUtils.class.getResourceAsStream("/wintools/kill.exe");
        RandomAccessFile raf = new RandomAccessFile(killFile, "rw");
        raf.setLength(0);/*from ww w  .  ja va 2  s  .c o  m*/
        int b;
        while ((b = is.read()) != -1)
            raf.write((byte) b);
        raf.close();
    }
    String[] command = new String[] { killpath, processId };
    Runtime rt = Runtime.getRuntime();
    final Process proc = rt.exec(command);

    final StringBuffer killPrint = new StringBuffer();
    final StringBuffer errorPrint = new StringBuffer();
    new Thread(new Runnable() {
        public void run() {
            try {
                InputStream is = proc.getInputStream();
                int b;
                while ((b = is.read()) != -1) {
                    killPrint.append((char) b);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }).start();
    new Thread(new Runnable() {
        public void run() {
            try {
                InputStream is = proc.getErrorStream();
                int b;
                while ((b = is.read()) != -1) {
                    errorPrint.append((char) b);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }).start();

    int exitVal = proc.waitFor();
    if (exitVal != 0)
        throw new Exception("kill exit code : " + exitVal + "\n" + errorPrint);
}

From source file:org.apache.flume.channel.file.TestFileChannelRestart.java

@Test
public void testCorruptCheckpointVersionMostSignificant4Bytes() throws Exception {
    Map<String, String> overrides = Maps.newHashMap();
    channel = createFileChannel(overrides);
    channel.start();//from  w  w  w.j av a2s  .c  om
    Assert.assertTrue(channel.isOpen());
    Set<String> in = putEvents(channel, "restart", 10, 100);
    Assert.assertEquals(100, in.size());
    forceCheckpoint(channel);
    channel.stop();
    File checkpoint = new File(checkpointDir, "checkpoint");
    RandomAccessFile writer = new RandomAccessFile(checkpoint, "rw");
    writer.seek(EventQueueBackingStoreFile.INDEX_VERSION * Serialization.SIZE_OF_LONG);
    writer.write(new byte[] { (byte) 1, (byte) 5 });
    writer.getFD().sync();
    writer.close();
    channel = createFileChannel(overrides);
    channel.start();
    Assert.assertTrue(channel.isOpen());
    Set<String> out = consumeChannel(channel);
    Assert.assertTrue(channel.didFullReplayDueToBadCheckpointException());
    compareInputAndOut(in, out);
}