[Bitcollider-commits] CVS: webcollider/src/java/org/bitpedia/collider CRC32Analyzer.java,NONE,1.1

[Gordon M. <go...@us...>]

Update of /cvsroot/bitcollider/webcollider/src/java/org/bitpedia/collider
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv21069/src/java/org/bitpedia/collider

Added Files:
	CRC32Analyzer.java 
Log Message:
* Webcollider.java, CRC32Analyzer.java
    add CRC32Analyzer

--- NEW FILE: CRC32Analyzer.java ---
/*
 * CRC32Analyzer
 * Created on Jan 10, 2006
 */
package org.bitpedia.collider;

import java.util.zip.CRC32;

import org.json.JSONException;
import org.json.JSONObject;

/**
 * Calculate CRC32 of passed content. 
 * 
 * @author gojomo
 */
public class CRC32Analyzer extends ColliderAnalyzer {
    CRC32 crc32;
    
    /* (non-Javadoc)
     * @see org.bitpedia.collider.ColliderAnalyzer#start(org.json.JSONObject)
     */
    public void start(JSONObject json) {
        crc32 = new CRC32();
    }

    /* (non-Javadoc)
     * @see org.bitpedia.collider.ColliderAnalyzer#update(org.json.JSONObject, byte[], int)
     */
    public void update(JSONObject json, byte[] buff, int read) {
        crc32.update(buff,0,read);
    }

    /* (non-Javadoc)
     * @see org.bitpedia.collider.ColliderAnalyzer#finish(org.json.JSONObject)
     */
    public void finish(JSONObject json) {
        try {
            String hex = Long.toHexString(crc32.getValue());
            while(hex.length()<8) {
                hex = "0"+hex;
            }
            json.put("crc32",hex);
        } catch (JSONException e) {
            // TODO Auto-generated catch block
            throw new RuntimeException(e);
        }
    }

}