Example usage for java.util.zip CheckedInputStream read

Introduction

In this page you can find the example usage for java.util.zip CheckedInputStream read.

Prototype

public int read(byte b[]) throws IOException 

Source Link

Document

Reads up to b.length bytes of data from this input stream into an array of bytes.

Usage

From source file:org.pentaho.di.core.row.ValueDataUtil.java

public static Long ChecksumCRC32(ValueMetaInterface metaA, Object dataA) {
    long checksum = 0;
    FileObject file = null;/*from   ww  w.  java  2s.co  m*/
    try {
        file = KettleVFS.getFileObject(dataA.toString());
        CheckedInputStream cis = null;

        // Computer CRC32 checksum
        cis = new CheckedInputStream(((LocalFile) file).getInputStream(), new CRC32());
        byte[] buf = new byte[128];
        int readSize = 0;
        do {
            readSize = cis.read(buf);
        } while (readSize >= 0);

        checksum = cis.getChecksum().getValue();

    } catch (Exception e) {
        // ignore - should likely log the exception
    } finally {
        if (file != null) {
            try {
                file.close();
                file = null;
            } catch (Exception e) {
                // Ignore
            }
        }
    }
    return checksum;
}

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From source file:org.pentaho.di.core.row.ValueDataUtil.java

public static Long ChecksumAdler32(ValueMetaInterface metaA, Object dataA) {
    long checksum = 0;
    FileObject file = null;/*from  w ww. j  av a2 s .  c o  m*/
    try {
        file = KettleVFS.getFileObject(dataA.toString());
        CheckedInputStream cis = null;

        // Computer Adler-32 checksum
        cis = new CheckedInputStream(((LocalFile) file).getInputStream(), new Adler32());

        byte[] buf = new byte[128];
        int readSize = 0;
        do {
            readSize = cis.read(buf);
        } while (readSize >= 0);
        checksum = cis.getChecksum().getValue();

    } catch (Exception e) {
        // throw new Exception(e);
    } finally {
        if (file != null) {
            try {
                file.close();
                file = null;
            } catch (Exception e) {
                // Ignore
            }
        }
    }
    return checksum;
}

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From source file:org.talend.commons.runtime.utils.io.IOUtils.java

public static long computeCRC(InputStream in) {
    long unitCRC = 0;

    BufferedInputStream bufferedInputStream = null;

    try {//from w w  w  .  java 2 s.c o  m
        bufferedInputStream = new BufferedInputStream(in);

        // Compute Adler-32 checksum
        CheckedInputStream cis = new CheckedInputStream(bufferedInputStream, new Adler32());
        byte[] tempBuf = new byte[128];
        while (cis.read(tempBuf) >= 0) {
            // do nothing
        }
        unitCRC = cis.getChecksum().getValue();
    } catch (IOException e) {
        return -1;
    } finally {
        try {
            bufferedInputStream.close();
        } catch (Exception e) {
            // ignore me even if i'm null
        }
    }
    return unitCRC;
}

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From source file:org.talend.utils.io.FilesUtils.java

public static long getChecksumAlder32(File file) throws IOException {
    BufferedInputStream bufferedInputStream = null;
    CheckedInputStream cis = null;
    try {//  w w w.  ja  va 2s  .  c  o m
        bufferedInputStream = new BufferedInputStream(new FileInputStream(file));
        // Compute Adler-32 checksum
        cis = new CheckedInputStream(bufferedInputStream, new Adler32());
        byte[] tempBuf = new byte[128];
        while (cis.read(tempBuf) >= 0) {
            // do nothing
        }
        return cis.getChecksum().getValue();
    } catch (IOException e) {
        throw e;
    } finally {
        if (bufferedInputStream != null) {
            bufferedInputStream.close();
        }
        if (cis != null) {
            cis.close();
        }
    }
}

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From source file:org.yccheok.jstock.analysis.Utils.java

public static long getChecksum(File file) {
    FileInputStream stream = null;
    CheckedInputStream cis = null;
    try {//from  w w w.j  a  v a 2  s.co  m
        // Compute Adler-32 checksum
        stream = new FileInputStream(file);
        cis = new CheckedInputStream(stream, new Adler32());
        byte[] tempBuf = new byte[128];
        while (cis.read(tempBuf) >= 0) {
        }
        long checksum = cis.getChecksum().getValue();
        return checksum;
    } catch (IOException ex) {
        log.error(null, ex);
    } finally {
        org.yccheok.jstock.file.Utils.close(cis);
        org.yccheok.jstock.file.Utils.close(stream);
    }
    return 0;
}

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From source file:watne.seis720.project.AES_Utilities.java

/**
 * Compute the Adler-32 checksum of the specified file. Code based on
 * "e457. Calculating the Checksum of a File", "The Java
 * Developers Almanac 1.4&quot;, <a
 * href="http://www.exampledepot.com/egs/java.util.zip/ChecksumFile.html">http://www.exampledepot.com/egs/java.util.zip/ChecksumFile.html</a>
 * @param checkFile the file to be checked.
 * @return the Adler-32 checkusm of the specified file.
 * @throws IOException if an error occurs reading checkFile.
 *//*from  w ww  .  java 2 s  .co  m*/
public static long getFileChecksum(File checkFile) throws IOException {
    long checksum = -1;

    CheckedInputStream cis = new CheckedInputStream(new FileInputStream(checkFile), new Adler32());
    byte[] tempBuf = new byte[128];

    while (cis.read(tempBuf) >= 0) {

    }
    checksum = cis.getChecksum().getValue();
    return checksum;
}

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