package net.sourceforge.phpeclipse.phpeditor;

/**********************************************************************
Copyright (c) 2000, 2002 IBM Corp. 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 implementation
    Klaus Hartlage - www.eclipseproject.de
**********************************************************************/

import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Hashtable;
import java.util.List;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IMarker;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.Position;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IFileEditorInput;
import org.eclipse.ui.texteditor.ITextEditor;
import org.eclipse.ui.texteditor.MarkerUtilities;
import org.eclipse.ui.texteditor.TextEditorAction;

/**
 * Class that defines the action for parsing the current PHP file
 */
public class PHPParserAction extends TextEditorAction {

  //	public static final String EXE = "exe"; //$NON-NLS-1$
  //	public static final String WINEXE = "winexe"; //$NON-NLS-1$
  //	public static final String LIBRARY = "library"; //$NON-NLS-1$
  //	public static final String MODULE = "module"; //$NON-NLS-1$

 // private static final String ERROR = "error"; //$NON-NLS-1$
 // private static final String WARNING = "warning"; //$NON-NLS-1$

  private static PHPParserAction instance = new PHPParserAction();

  protected IFile fileToParse;
  protected List fVariables = new ArrayList(100);

  /**
   * Constructs and updates the action.
   */
  private PHPParserAction() {
    super(PHPEditorMessages.getResourceBundle(), "ParserAction.", null); //$NON-NLS-1$
    update();
  }

  public static PHPParserAction getInstance() {
    return instance;
  }

  /**
   * Code called when the action is fired.
   */
  public void run() {
    try {
      fileToParse = getPHPFile();
      if (fileToParse == null) {
        // should never happen
        System.err.println("Error : no file in the editor");
        // should throw an exception
        return;
      }
      // first delete all the previous markers
      fileToParse.deleteMarkers(IMarker.PROBLEM, false, 0);
      //IDocument document = getTextEditor().getDocumentProvider().getDocument(null);
      //String text = document.get();

      //  String text = 
      // parse(document);
      try {
        InputStream iStream = fileToParse.getContents();
        //        int c = iStream.read();
        parse(iStream);
        iStream.close();
      } catch (IOException e) {
      }

      //      String message = "Test error";
      //      int lineNumber = 1;
      //
      //      // create marker for the error
      //
      //      setMarker(message, lineNumber, fileToParse);
    } catch (CoreException e) {
    }

  }

  /**
   * Finds the file that's currently opened in the PHP Text Editor
   */
  protected IFile getPHPFile() {
    ITextEditor editor = getTextEditor();

    IEditorInput editorInput = null;
    if (editor != null) {
      editorInput = editor.getEditorInput();
    }

    if (editorInput instanceof IFileEditorInput)
      return ((IFileEditorInput) editorInput).getFile();

    // if nothing was found, which should never happen
    return null;
  }

  /**
   * Create marker for the parse error
   */
//  protected void setMarker(String message, int lineNumber) throws CoreException {
//
//    Hashtable attributes = new Hashtable();
//    MarkerUtilities.setMessage(attributes, message);
//    if (message.startsWith(ERROR))
//      attributes.put(IMarker.SEVERITY, new Integer(IMarker.SEVERITY_ERROR));
//    else if (message.startsWith(WARNING))
//      attributes.put(IMarker.SEVERITY, new Integer(IMarker.SEVERITY_WARNING));
//    else
//      attributes.put(IMarker.SEVERITY, new Integer(IMarker.SEVERITY_INFO));
//    MarkerUtilities.setLineNumber(attributes, lineNumber);
//    MarkerUtilities.createMarker(fileToParse, attributes, IMarker.PROBLEM);
//  }

  //  private String getIdentifier(InputStream iStream, int c) {
  //    //    int i = 0;
  //    // char c;
  //    //  int textLength = text.length();
  //    StringBuffer identifier = new StringBuffer();
  //    identifier.append((char) c);
  //    try {
  //      while ((c = iStream.read()) != (-1)) {
  //        if (Character.isJavaIdentifierPart((char) c)) {
  //          identifier.append((char) c);
  //          //        } else if ((i == 0) && (c == '$')) {
  //          //          identifier.append((char)c);
  //        } else {
  //          return identifier.toString();
  //        }
  //        //        i++;
  //      }
  //    } catch (IOException e) {
  //    }
  //    return identifier.toString();
  //  }

  protected void parse(InputStream iStream) {

    StringBuffer buf = new StringBuffer();
    int c0;
    try {
      while ((c0 = iStream.read()) != (-1)) {
        buf.append((char) c0);
      }
    } catch (IOException e) {
      return;
    }
    String input = buf.toString();
    
      PHPParser parser = new PHPParser(fileToParse);
      parser.htmlParse(input);
  }
}