/***********************************************************************************************************************************
 * Copyright (c) 2000, 2004 IBM Corporation and others. All rights reserved. This program and the accompanying materials are made
 * available under the terms of the Common Public License v1.0 which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors: IBM Corporation - initial API and implementation
 **********************************************************************************************************************************/
package net.sourceforge.phpdt.internal.compiler.batch;

import java.io.File;
import java.io.IOException;

import net.sourceforge.phpdt.core.compiler.CharOperation;
import net.sourceforge.phpdt.internal.compiler.env.ICompilationUnit;
import net.sourceforge.phpdt.internal.compiler.util.Util;

import org.eclipse.core.resources.IResource;

public class CompilationUnit implements ICompilationUnit {
	public char[] contents;

	public char[] fileName;

	public char[] mainTypeName;

	String encoding;

	public CompilationUnit(char[] contents, String fileName, String encoding) {
		this.contents = contents;
		if (File.separator.equals("/")) { //$NON-NLS-1$
			if (fileName.indexOf("\\") != -1) { //$NON-NLS-1$
				fileName = fileName.replace('\\', File.separatorChar);
			}
		} else {
			// the file separator is \
			if (fileName.indexOf('/') != -1) {
				fileName = fileName.replace('/', File.separatorChar);
			}
		}
		this.fileName = fileName.toCharArray();

		int start = fileName.lastIndexOf("/") + 1; //$NON-NLS-1$
		if (start == 0 || start < fileName.lastIndexOf("\\")) //$NON-NLS-1$
			start = fileName.lastIndexOf("\\") + 1; //$NON-NLS-1$

		int end = fileName.lastIndexOf("."); //$NON-NLS-1$
		if (end == -1)
			end = fileName.length();

		this.mainTypeName = fileName.substring(start, end).toCharArray();
		this.encoding = encoding;
	}

	public char[] getContents() {
		if (this.contents != null)
			return this.contents; // answer the cached source

		// otherwise retrieve it
		try {
			return Util.getFileCharContent(new File(new String(this.fileName)),
					this.encoding);
		} catch (IOException e) {
			// assume no content then
		}
		return CharOperation.NO_CHAR;
	}

	public char[] getFileName() {
		return this.fileName;
	}

	public char[] getMainTypeName() {
		return this.mainTypeName;
	}

	public char[][] getPackageName() {
		return null;
	}

	public String toString() {
		return "CompilationUnit[" + new String(this.fileName) + "]"; //$NON-NLS-2$ //$NON-NLS-1$
	}

	public IResource getResource() {
		return null;
	}
}