NameFile.java

/*
 * NameFile.java
 *
 * Created on 29 October 2003, 15:16
 */

package Sct.File;

import Sct.*;
import java.util.*;
import java.util.regex.*;

public class NameFile extends Sct.Name {
    
    public NameFile(Serializable s) {
        this(s.getClassName(), s.getUniqueID());
    }
    
    public NameFile(String name) throws IllegalArgumentException {
        super(name);        
        fileName = name;
    }
    
    public NameFile(String className, String uniqueID) {
        super(className, uniqueID);        
        path = getDefaultPath();
        construct();
    }
    
    public String getName() {        
        return fileName;
    }
    
    public String getPath() {
        return path;
    }

    public static void reset() {
        fileNamePattern = null;
        defaultPath = null;
    }
    
    protected void parse(String name) throws IllegalArgumentException {
        try {
            Matcher m = getPattern().matcher(name);
            m.matches();
            path = m.group(1);
            className = convertFromC(m.group(2));
            uniqueID = m.group(3);
        } catch (IllegalStateException e) {
            IllegalArgumentException iae = new IllegalArgumentException("NameFile cannot parse File name - doesn't match expected format: " + name);   
            iae.initCause(e);
            throw iae;
        } catch (IndexOutOfBoundsException e) {
            IllegalStateException iae = new IllegalStateException("NameFile internal error - regex does have expected number of groups.  Name: " + name);   
            iae.initCause(e);
            throw iae;
        }
    }
    
    // This is used by the Unit tests
    public static String getDefaultPath() {
        if (defaultPath == null) {
            defaultPath = System.getProperty("Sct.Scratch.Dir", "/tmp");
        }
        return defaultPath;
    }
    
    private void construct() {
        fileName = getPath() + "/" + convertToC(className) + "." + uniqueID;
    }
    
    private static Pattern getPattern() {
        if (fileNamePattern == null) 
            fileNamePattern = Pattern.compile("(.*)/([\\S&&[^.]]*)\\.(.*)");
        return fileNamePattern;
    }
    
    private static Pattern fileNamePattern;
    private static String defaultPath;
    private String path;
    private String fileName;
}

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