/*
* This file is part of Bracket Properties
* Copyright 2011 David R. Smith
*
*/
package asia.redact.bracket.properties;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import asia.redact.bracket.properties.line.Line;
import asia.redact.bracket.properties.line.LineScanner;
/**
* <pre>
* Use the line scanner to load a Properties implementation.
*
* This class does not use PropertiesToken, it is a "streaming" parser
* which reads the tokens from the line and parses as it reads.
* It is intended for low memory situations or for very large properties files,
* where it ought to perform a bit better.
*
* </pre>
*
* @author Dave
*
*/
public class PropertiesParser2 {
protected final LineScanner scanner;
protected final Properties props;
private final Lock lock = new ReentrantLock();
public PropertiesParser2(LineScanner scanner) {
this.scanner=scanner;
this.props = new PropertiesImpl();
}
public PropertiesParser2(LineScanner scanner, Properties props) {
this.scanner=scanner;
this.props = props;
}
public void parse(){
try {
lock.lock();
Line line = null;
String key = null;
BasicValueModel model = new BasicValueModel();
boolean hasContinuation=false;
while((line =scanner.line())!=null){
if(hasContinuation){
model.addValue(line.logicalLineContents());
if(line.hasContinuation()){
continue;
}else{
hasContinuation=false;
}
}
if(line.isEmptyLine())continue;
if(line.isPrivateComment())continue;
if(line.isCommentLine()){
if(key !=null){
props.getPropertyMap().put(key, model);
key=null;
model=new BasicValueModel();
}
model.addComment(line.commentContents());
continue;
}else if(line.isNaturalLine()){
if(key !=null){
props.getPropertyMap().put(key, model);
key=null;
model=new BasicValueModel();
}
String [] parts = line.naturalLineContents();
key = parts[0];
model.setSeparator(parts[1].charAt(0));
hasContinuation=line.hasContinuation();
model.addValue(parts[2]);
}
}
// last one
if(key !=null){
props.getPropertyMap().put(key, model);
}
}finally {
lock.unlock();
}
}
public Properties getProperties() {
return props;
}
}