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A Java library for reading Apache httpd configuration files
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 *
 *   Copyright (C) 2010-2014 Christian Bockermann 
 *    
 *   This file is part of the jwall.org apache-config library. The apache-config library is
 *   a parsing library to handle Apache HTTPD configuration files.
 *
 *   More information and documentation for the jwall-tools can be found at
 *   
 *                      http://www.jwall.org/apache-config
 *   
 *   This program is free software; you can redistribute it and/or modify it under
 *   the terms of the GNU General Public License as published by the Free Software
 *   Foundation; either version 3 of the License, or (at your option) any later version.
 *   
 *   This program is distributed in the hope that it will be useful, but WITHOUT ANY
 *   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 *   FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 * 
 *   You should have received a copy of the GNU General Public License along with this 
 *   program; if not, see .
 *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
package org.jwall.apache.httpd.config;

import java.io.File;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class Macro extends ContainerDirective {

	static Logger log = LoggerFactory.getLogger(Macro.class);

	/** The unique class id */
	private static final long serialVersionUID = -6440453746268549039L;

	final String name;
	String body = "";

	public Macro(String line, File file, int lineNum) {
		super(line, file, lineNum);
		log.info("Creating macro object from line {}", line);

		log.debug("   Macro args are: {}", getArgs());
		this.name = getArgs().remove(0).toLowerCase();
	}

	public String getName() {
		return name;
	}

	public String getBody() {
		return body;
	}

	public void setBody(String body) {
		this.body = body;
	}

	public String expand(List args) throws ParseException {
		Map subs = new HashMap();

		if (args.size() != getArgs().size()) {
			throw new ParseException("Number of arguments for macro '" + name
					+ "' does not match!");
		}

		for (int i = 0; i < args.size(); i++) {
			subs.put(getArgs().get(i), args.get(i));
		}

		String exp = body;

		for (String key : subs.keySet()) {

			String repl = subs.get(key);
			int repls = 0;
			while (exp.indexOf(key) > 0) {
				exp = exp.replace(key, repl);
				repls++;
			}

			log.debug("replaced {} occurences of key '{}'", repls, key);
		}

		return exp;
	}

	public String toString() {
		return toXML();
	}

	public String toXML() {
		StringBuffer s = new StringBuffer(prefix());
		String loc = "";
		if (SHOW_LOCATION && location != null)
			loc = " location=\"" + location.toString() + "\"";

		StringBuffer arguments = new StringBuffer();
		Iterator it = args.iterator();
		while (it.hasNext()) {
			String arg = it.next();
			arguments.append(arg);
			if (it.hasNext()) {
				arguments.append(" ");
			}
		}

		s.append(prefix() + "");

		s.append("");
		s.append("\n");
		return s.toString();
	}
}