List of usage examples for java.util.zip CheckedInputStream read
public int read(byte b[]) throws IOException
b.length bytes of data from this input stream into an array of bytes. From source file:com.panet.imeta.core.row.ValueDataUtil.java
public static Long ChecksumAdler32(ValueMetaInterface metaA, Object dataA) { long checksum = 0; FileObject file = null;/*from w w w. j av a2s. co m*/ try { file = KettleVFS.getFileObject(dataA.toString()); CheckedInputStream cis = null; // Computer Adler-32 checksum cis = new CheckedInputStream((FileInputStream) ((LocalFile) file).getInputStream(), new Adler32()); byte[] buf = new byte[128]; while (cis.read(buf) >= 0) { } checksum = cis.getChecksum().getValue(); } catch (Exception e) { //throw new Exception(e); } finally { if (file != null) try { file.close(); } catch (Exception e) { } ; } return checksum; }
From source file:com.alcatel_lucent.nz.wnmsextract.reader.FileUtilities.java
public long checksum(File input) { long checksum = -1; try {/*from w ww. j ava 2 s. c o m*/ FileInputStream fis = null; CheckedInputStream cis = null; Adler32 adler = null; fis = new FileInputStream(input); adler = new Adler32(); cis = new CheckedInputStream(fis, adler); byte[] buffer = new byte[1024]; while (cis.read(buffer) >= 0) { checksum = cis.getChecksum().getValue(); } } catch (IOException e) { jlog.fatal("IO Exception on " + input.getAbsolutePath() + e); } return checksum; }
From source file:com.neusoft.clw.infomanage.ridingplan.action.RidingPlanAction.java
private String doChecksum(String fileName) { long checksum = 0; try {/*from w ww . j a va 2s.com*/ CheckedInputStream cis = null; try { // Computer CRC32 checksum cis = new CheckedInputStream(new FileInputStream(fileName), new CRC32()); } catch (FileNotFoundException e) { LOG.error("File not found."); } byte[] buf = new byte[128]; while (cis.read(buf) >= 0) { } checksum = cis.getChecksum().getValue(); } catch (IOException e) { e.printStackTrace(); } return String.valueOf(checksum); }
From source file:org.apache.cassandra.db.VerifyTest.java
protected long simpleFullChecksum(String filename) throws IOException { FileInputStream inputStream = new FileInputStream(filename); Adler32 adlerChecksum = new Adler32(); CheckedInputStream cinStream = new CheckedInputStream(inputStream, adlerChecksum); byte[] b = new byte[128]; while (cinStream.read(b) >= 0) { }/*ww w.ja va 2 s. c o m*/ return cinStream.getChecksum().getValue(); }
From source file:org.broadleafcommerce.common.util.StringUtil.java
public static long getChecksum(String test) { try {// w w w . j av a 2 s . c o m byte buffer[] = test.getBytes(); ByteArrayInputStream bais = new ByteArrayInputStream(buffer); CheckedInputStream cis = new CheckedInputStream(bais, new Adler32()); byte readBuffer[] = new byte[buffer.length]; cis.read(readBuffer); return cis.getChecksum().getValue(); } catch (IOException e) { throw new RuntimeException(e); } }
From source file:org.efaps.db.databases.OracleDatabase.java
/** * @param _name name//from w ww. ja v a2 s .c o m * @param _maxLength maximum length * @return new name * @throws EFapsException on error */ protected String getName4DB(final String _name, final int _maxLength) throws EFapsException { String ret = _name; if (_name.length() > 30) { try { final byte[] buffer = _name.getBytes("UTF8"); final ByteArrayInputStream bais = new ByteArrayInputStream(buffer); final CheckedInputStream cis = new CheckedInputStream(bais, new Adler32()); final byte[] readBuffer = new byte[5]; long value = 0; while (cis.read(readBuffer) >= 0) { value = cis.getChecksum().getValue(); } final String valueSt = String.valueOf(value); ret = ret.substring(0, 30); final int sizeSuf = ret.length() - valueSt.length(); ret = ret.substring(0, sizeSuf) + value; } catch (final UnsupportedEncodingException e) { throw new EFapsException("UnsupportedEncodingException", e); } catch (final IOException e) { throw new EFapsException("IOException", e); } } return ret; }
From source file:org.kuali.rice.krad.datadictionary.URLMonitor.java
private Long getCRC(URL zipUrl) { Long result = -1l;/*from ww w. jav a 2s. co m*/ try { CRC32 crc = new CRC32(); CheckedInputStream cis = new CheckedInputStream(zipUrl.openStream(), crc); byte[] buffer = new byte[1024]; int length; //read the entry from zip file and extract it to disk while ((length = cis.read(buffer)) > 0) ; cis.close(); result = crc.getValue(); } catch (IOException e) { LOG.warn("Unable to calculate CRC, resource doesn't exist?", e); } return result; }
From source file:org.mule.transports.vfs.VFSReceiver.java
protected boolean hasChanged(FileObject fileObject) { boolean changed = false; String key = fileObject.getName().getPath(); long checksum = 0; if (checksumMap.containsKey(key)) { checksum = ((Long) checksumMap.get(key)).longValue(); }/* w w w . j a v a2s. c om*/ long newChecksum = 0; CheckedInputStream checkedInputStream = null; try { InputStream inputStream = fileObject.getContent().getInputStream(); checkedInputStream = new CheckedInputStream(inputStream, new Adler32()); int bufferSize = 1; if (inputStream.available() > 0) { bufferSize = inputStream.available(); } byte[] buffer = new byte[bufferSize]; while (checkedInputStream.read(buffer) > -1) { ; } newChecksum = checkedInputStream.getChecksum().getValue(); if (newChecksum != checksum) { if (logger.isDebugEnabled()) { logger.debug("calculated a new checksum of " + newChecksum); } checksumMap.put(key, new Long(newChecksum)); changed = true; } } catch (IOException e) { connector.handleException(e); } return changed; }
From source file:org.openossad.util.core.row.ValueDataUtil.java
public static Long ChecksumCRC32(ValueMetaInterface metaA, Object dataA) { long checksum = 0; FileObject file = null;/* ww w . j a v a 2s .c o m*/ try { file = OpenDESIGNERVFS.getFileObject(dataA.toString()); CheckedInputStream cis = null; // Computer CRC32 checksum cis = new CheckedInputStream((FileInputStream) ((LocalFile) file).getInputStream(), new CRC32()); byte[] buf = new byte[128]; while (cis.read(buf) >= 0) { } checksum = cis.getChecksum().getValue(); } catch (Exception e) { } finally { if (file != null) try { file.close(); } catch (Exception e) { } ; } return checksum; }
From source file:org.openossad.util.core.row.ValueDataUtil.java
public static Long ChecksumAdler32(ValueMetaInterface metaA, Object dataA) { long checksum = 0; FileObject file = null;//from ww w .j ava 2 s . c om try { file = OpenDESIGNERVFS.getFileObject(dataA.toString()); CheckedInputStream cis = null; // Computer Adler-32 checksum cis = new CheckedInputStream((FileInputStream) ((LocalFile) file).getInputStream(), new Adler32()); byte[] buf = new byte[128]; while (cis.read(buf) >= 0) { } checksum = cis.getChecksum().getValue(); } catch (Exception e) { //throw new Exception(e); } finally { if (file != null) try { file.close(); } catch (Exception e) { } ; } return checksum; }