/*
 *   Copyright 2003-2004 The Apache Software Foundation.
// (c) Copyright IBM Corp. 2004, 2005 All Rights Reserved
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */
package org.apache.axis.tools.common;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

/**
 * Encapsulates the tool's configuration file 
 */
public class Configuration {
	private static Set files = new HashSet();
	private static Set classes = new HashSet();
	private static Set methods = new HashSet();
	private static Set macros = new HashSet();
	private static Set defines = new HashSet();
	private static Set attributes = new HashSet();
	private static Map others = new HashMap();

    /**
     * No one creates an instance of this class.
     */
	private Configuration() {
	}

    /**
     * Reads in the configuration file
     */
	public static void initialise(String filename) throws Exception {
		File file = new File(filename);
		FileReader fr = new FileReader(file);
		BufferedReader br = new BufferedReader(fr);
		String line = br.readLine();
		for (int lineno = 1; null != line; lineno++, line=br.readLine()) {
			// Ignore lines starting with a # (comments) and blank lines
			if (line.startsWith("#"))
				continue;
			boolean blank = true;
			for (int i = 0; i < line.length() && blank; i++)
				if (!Character.isWhitespace(line.charAt(i)))
					blank = false;
			if (blank)
				continue;

			int equals = line.indexOf("=");
			if (-1 == equals)
				Utils.rude(
					"Bad line in configuration file "
						+ filename
						+ " lineno "
						+ lineno);
			String key = line.substring(0, equals).trim();
			String value = line.substring(equals + 1).trim();
			if ("excludefile".equals(key)) {
				files.add(value);
			} else if ("excludeclass".equals(key)) {
				classes.add(value);
			} else if ("excludemethod".equals(key)) {
				methods.add(value);
			} else if ("macro".equals(key)) {
				macros.add(value);
			} else if ("define".equals(key)) {
				defines.add(value);
			} else if ("attribute".equals(key)) {
				attributes.add(value);
			} else {
				others.put(key, value);
			}
		}
	}

	public static boolean fileExcluded(String s) {
		return files.contains(s);
	}

	public static boolean classExcluded(String s) {
		return classes.contains(s);
	}

	public static boolean methodExcluded(String className, String method) {
		return methods.contains(className + "::" + method);
	}

	public static boolean isMacro(String s) {
		return macros.contains(s);
	}

	public static boolean isDefine(String s) {
		return defines.contains(s);
	}

	public static boolean isAttribute(String s) {
		return attributes.contains(s);
	}

	public static String getConfigured(String key) {
		return (String) others.get(key);
	}
}