/***********************************************************************************************************************************
 * 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;
  }
}