/*
 *   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.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;

/**
 * The superclass of tools that parse C/C++ code. This CParsingTool provides
 * some useful common methods.
 */
public class CParsingTool {
	protected boolean failed = false;
	protected Headers headers = new Headers();

	protected CParsingTool(String[] args) throws Exception {
		String text = new String();
		for (int i = 0; i < args.length; i++)
			text += args[i] + " ";
		Utils.outputDebugString(text);

		Options.set(args);
		String config = (String) Options.getOption("-config");
		if (null != config)
			Configuration.initialise(config);
	}

    /**
     * Read in any include files before the main processing of the tool
     * is done. This constructs the Headers.
     */
	protected Headers preparseHeaders(String option) throws Exception {
		Headers headers = new Headers();
		Object o = Options.getOption(option);
		if (null != o) {
			Utils.outputDebugString("Pre-parsing headers...");
			List includeList;
			if (o instanceof List)
				includeList = (List) o;
			else {
				includeList = new ArrayList();
				includeList.add(o);
			}
			Iterator it = includeList.iterator();
			while (it.hasNext()) {
				File include = new File((String) it.next());
				if (!include.isDirectory())
					Utils.rude("Bad include directory " + include);

				DirectoryTree tree =
					new DirectoryTree(
						headers,
						new HashSet(
							Arrays.asList(new Object[] { "hpp", "h" })));
				tree.walkTree(include, null, 0);
			}
			Utils.outputDebugString("Parsing files...");
		}
		return headers;
	}

    /**
     * Checks the source directory looks good.
     */
	protected File checkFile(String option) throws Exception {
		String name = (String) Options.getOption(option);
		if (null == name) {
			printUsage();
			System.exit(-1);
		}

		File file = new File(name);
		if (!file.isFile() && !file.isDirectory())
			Utils.rude("Bad file or directory " + file);
		return file;
	}

    /**
     * Checks the target directory and creates it if it doesn't already 
     * exist.
     */
	protected File maybeCreateDirectory(String option) throws Exception {
		String name = (String) Options.getOption(option);
		if (null == name) {
			printUsage();
			System.exit(-1);
		}

		File file = new File(name);
		if (!file.exists() && !file.mkdir())
			Utils.rude("Failed to create directory " + file);
		return file;
	}

	protected void printUsage() {
		System.out.println("usage: ??");
	}
}