List of usage examples for java.io DataInputStream available
public int available() throws IOException
From source file:org.apache.cassandra.db.SuperColumn.java
public IColumn deserialize(DataInputStream dis, String name, IFilter filter) throws IOException { if (dis.available() == 0) return null; String[] names = RowMutation.getColumnAndColumnFamily(name); if (names.length == 1) { IColumn superColumn = defreezeSuperColumn(dis); if (name.equals(superColumn.name())) { /* read the number of columns stored */ int size = dis.readInt(); /* read the size of all columns */ dis.readInt();/*from ww w .j a va 2 s. c om*/ IColumn column = null; for (int i = 0; i < size; ++i) { column = Column.serializer().deserialize(dis, filter); if (column != null) { superColumn.addColumn(column.name(), column); column = null; if (filter.isDone()) { break; } } } return superColumn; } else { /* read the number of columns stored */ dis.readInt(); /* read the size of all columns to skip */ int size = dis.readInt(); dis.skip(size); return null; } } SuperColumn superColumn = defreezeSuperColumn(dis); if (!superColumn.isMarkedForDelete()) { int size = dis.readInt(); /* skip the size of the columns */ dis.readInt(); if (size > 0) { for (int i = 0; i < size; ++i) { IColumn subColumn = Column.serializer().deserialize(dis, names[1], filter); if (subColumn != null) { superColumn.addColumn(subColumn.name(), subColumn); break; } } } } return superColumn; }
From source file:org.rifidi.emulator.io.comm.serial.SerialCommunicationIncomingMessageHandler.java
public void run() { // byte[] message = null; DataBuffer<byte[]> newBuffer = host.getReceiveBuffer(); ArrayList<Byte> receivedData = new ArrayList<Byte>(); boolean keepRunning = true; DataInputStream dataStream = new DataInputStream(serialIn); while (keepRunning) { boolean eof = false; /* Read as fully as we can */ while (!eof) { try { /* Attempt to read in a byte */ receivedData.add(new Byte(dataStream.readByte())); if (dataStream.available() <= 0) { eof = true;//from w w w.ja v a2 s . c o m } } catch (EOFException eofe) { /* Indicate end of file */ eof = true; } catch (IOException e) { logger.error(e.getMessage()); eof = true; } } /* Check that we have something to "receive" */ if (!receivedData.isEmpty()) { logger.debug("Back in the if statement"); /* Construct an array of bytes */ byte[] receivedBytes = new byte[receivedData.size()]; for (int i = 0; i < receivedData.size(); i++) { receivedBytes[i] = receivedData.get(i).byteValue(); } receivedData.clear(); if (keepRunning) { /* Actually add to the receive buffer */ try { logger.debug("Adding to buffer: " + receivedBytes); List<byte[]> listOfBytes = this.host.getProtocol().removeProtocol(receivedBytes); for (byte[] b : listOfBytes) { newBuffer.addToBuffer(b); } String x = ""; for (byte i : receivedBytes) { x += String.format("%1$02x", i) + " "; } this.host.getConsoleLogger().info("<INPUT> " + x + "</INPUT>"); } catch (DataBufferInterruptedException e) { logger.error(e.getMessage()); keepRunning = false; } catch (ProtocolValidationException e) { logger.error(e.getMessage()); keepRunning = false; } } } } }
From source file:org.kawanfw.commons.util.Sha1Util.java
/** * Gets the a file hash value./* w w w .j a va 2s.c o m*/ * * @param file the file to hash * * @return the file hash as bytes * * @exception IOException * an I/O error occurred * @exception NoSuchAlgorithmException * hash algorithm not found * @exception NoSuchProviderException * hash provider not found */ public byte[] getFileHash(File file) throws IOException, NoSuchAlgorithmException, NoSuchProviderException { FileInputStream fisIn = new FileInputStream(file); BufferedInputStream bisIn = new BufferedInputStream(fisIn); DataInputStream disIn = null; try { disIn = new DataInputStream(bisIn); // Bytes containing the MD5 or SHA-1 Hash Code byte[] bytesHash = new byte[160]; MessageDigest mdInstance = MessageDigest.getInstance("SHA-1"); int bytesRead; int total = disIn.available(); if (total == 0) { return null; } if (total > READ_BUFFER_SIZE) { total = READ_BUFFER_SIZE; } byte bRead[] = new byte[total]; while ((bytesRead = disIn.read(bRead)) > 0) { mdInstance.update(bRead, 0, bytesRead); } bytesHash = mdInstance.digest(); return bytesHash; } finally { IOUtils.closeQuietly(disIn); } }
From source file:com.facebook.infrastructure.db.SuperColumn.java
public IColumn deserialize(DataInputStream dis, String name, IFilter filter) throws IOException { if (dis.available() == 0) return null; String[] names = RowMutation.getColumnAndColumnFamily(name); if (names.length == 1) { IColumn superColumn = defreezeSuperColumn(dis); if (name.equals(superColumn.name())) { if (!superColumn.isMarkedForDelete()) { /* read the number of columns stored */ int size = dis.readInt(); /* read the size of all columns */ dis.readInt();/*ww w.j a va2 s . c o m*/ IColumn column = null; for (int i = 0; i < size; ++i) { column = Column.serializer().deserialize(dis, filter); if (column != null) { superColumn.addColumn(column.name(), column); column = null; if (filter.isDone()) { break; } } } } return superColumn; } else { /* read the number of columns stored */ dis.readInt(); /* read the size of all columns to skip */ int size = dis.readInt(); dis.skip(size); return null; } } SuperColumn superColumn = defreezeSuperColumn(dis); if (!superColumn.isMarkedForDelete()) { int size = dis.readInt(); /* skip the size of the columns */ dis.readInt(); if (size > 0) { for (int i = 0; i < size; ++i) { IColumn subColumn = Column.serializer().deserialize(dis, names[1], filter); if (subColumn != null) { superColumn.addColumn(subColumn.name(), subColumn); break; } } } } return superColumn; }
From source file:ubic.gemma.core.analysis.preprocess.batcheffects.AffyScanDateExtractor.java
/** * @return A 1 byte character string. A string object is stored as an INT (to store the string length) followed by the CHAR * array (to store the string contents). *///from w ww . j a v a 2 s . co m private String readString(DataInputStream str) throws IOException { int fieldLength = this.readIntBigEndian(str); StringBuilder buf = new StringBuilder(); for (int i = 0; i < fieldLength; i++) { if (str.available() == 0) throw new IOException("Reached end of file without string end"); buf.append(new String(new byte[] { str.readByte() })); } return buf.toString(); }
From source file:ubic.gemma.core.analysis.preprocess.batcheffects.AffyScanDateExtractor.java
/** * The data is stored as a int, then the array of bytes. *///from w w w.ja va2 s . c o m private byte[] readBytes(DataInputStream str) throws IOException { int fieldLength = this.readIntBigEndian(str); byte[] result = new byte[fieldLength]; for (int i = 0; i < fieldLength; i++) { if (str.available() == 0) throw new IOException("Reached end of file without string end"); result[i] = str.readByte(); } return result; }
From source file:be.ibridge.kettle.job.entry.filecompare.JobEntryFileCompare.java
/** * Check whether 2 files have the same contents. * * @param file1 first file to compare/*w ww . j av a 2 s.c o m*/ * @param file2 second file to compare * @return true if files are equal, false if they are not * * @throws IOException upon IO problems */ protected boolean equalFileContents(FileObject file1, FileObject file2) throws IOException { // Really read the contents and do comparisons DataInputStream in1 = new DataInputStream( new BufferedInputStream(KettleVFS.getInputStream(KettleVFS.getFilename(file1)))); DataInputStream in2 = new DataInputStream( new BufferedInputStream(KettleVFS.getInputStream(KettleVFS.getFilename(file2)))); char ch1, ch2; while (in1.available() != 0 && in2.available() != 0) { ch1 = (char) in1.readByte(); ch2 = (char) in2.readByte(); if (ch1 != ch2) return false; } if (in1.available() != in2.available()) { return false; } else { return true; } }
From source file:ZipImploder.java
/** Read all the bytes in a stream */ protected byte[] readAllBytes(DataInputStream is) throws IOException { byte[] bytes = new byte[0]; for (int len = is.available(); len > 0; len = is.available()) { byte[] xbytes = new byte[len]; int count = is.read(xbytes); if (count > 0) { byte[] nbytes = new byte[bytes.length + count]; System.arraycopy(bytes, 0, nbytes, 0, bytes.length); System.arraycopy(xbytes, 0, nbytes, bytes.length, count); bytes = nbytes;//from w w w .ja v a 2 s .c o m } } return bytes; }
From source file:ClipboardExample.java
public Object nativeToJava(TransferData transferData) { if (isSupportedType(transferData)) { byte[] buffer = (byte[]) super.nativeToJava(transferData); if (buffer == null) return null; MyType[] myData = new MyType[0]; try {//w w w . ja va2 s. c om ByteArrayInputStream in = new ByteArrayInputStream(buffer); DataInputStream readIn = new DataInputStream(in); while (readIn.available() > 20) { MyType datum = new MyType(); int size = readIn.readInt(); byte[] name = new byte[size]; readIn.read(name); datum.firstName = new String(name); size = readIn.readInt(); name = new byte[size]; readIn.read(name); datum.lastName = new String(name); MyType[] newMyData = new MyType[myData.length + 1]; System.arraycopy(myData, 0, newMyData, 0, myData.length); newMyData[myData.length] = datum; myData = newMyData; } readIn.close(); } catch (IOException ex) { return null; } return myData; } return null; }