net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/core/BasicCompilationUnit.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2003 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package net.sourceforge.phpdt.internal.core;
  12
  13 import java.io.File;
  14 import java.io.IOException;
  15
  16 import net.sourceforge.phpdt.core.IJavaElement;
  17 import net.sourceforge.phpdt.core.IJavaProject;
  18 import net.sourceforge.phpdt.core.compiler.CharOperation;
  19 import net.sourceforge.phpdt.internal.compiler.env.ICompilationUnit;
  20 import net.sourceforge.phpdt.internal.compiler.util.Util;
  21
  22 import org.eclipse.core.resources.IFile;
  23 import org.eclipse.core.resources.IProject;
  24 import org.eclipse.core.runtime.CoreException;
  25
  26 /**
  27  * A basic implementation of <code>ICompilationUnit</code>
  28  * for use in the <code>SourceMapper</code>.
  29  * @see ICompilationUnit
  30  */
  31 public class BasicCompilationUnit implements ICompilationUnit {
  32   protected char[] contents;
  33   protected char[] fileName;
  34   protected char[][] packageName;
  35   protected char[] mainTypeName;
  36   protected String encoding;
  37
  38 //  public BasicCompilationUnit(char[] contents, char[][] packageName, String fileName, String encoding) {
  39 //    this.contents = contents;
  40 //    this.fileName = fileName.toCharArray();
  41 //    this.packageName = packageName;
  42 //
  43 //    int start = fileName.lastIndexOf("/") + 1; //$NON-NLS-1$
  44 //    if (start == 0 || start < fileName.lastIndexOf("\\")) //$NON-NLS-1$
  45 //      start = fileName.lastIndexOf("\\") + 1; //$NON-NLS-1$
  46 //
  47 //    int end = fileName.lastIndexOf("."); //$NON-NLS-1$
  48 //    if (end == -1)
  49 //      end = fileName.length();
  50 //
  51 //    this.mainTypeName = fileName.substring(start, end).toCharArray();
  52 //    this.encoding = encoding;
  53 //  }
  54   public BasicCompilationUnit(char[] contents, char[][] packageName, String fileName) {
  55         this.contents = contents;
  56         this.fileName = fileName.toCharArray();
  57         this.packageName = packageName;
  58
  59         int start = fileName.lastIndexOf("/") + 1; //$NON-NLS-1$
  60         if (start == 0 || start < fileName.lastIndexOf("\\")) //$NON-NLS-1$
  61                 start = fileName.lastIndexOf("\\") + 1; //$NON-NLS-1$
  62
  63         int end = fileName.lastIndexOf("."); //$NON-NLS-1$
  64         if (end == -1)
  65                 end = fileName.length();
  66
  67         this.mainTypeName = fileName.substring(start, end).toCharArray();
  68         this.encoding = null;
  69 }
  70   public BasicCompilationUnit(char[] contents, char[][] packageName, String fileName, String encoding) {
  71         this(contents, packageName, fileName);
  72         this.encoding = encoding;
  73   }
  74   public BasicCompilationUnit(char[] contents, char[][] packageName, String fileName, IJavaElement javaElement) {
  75         this(contents, packageName, fileName);
  76         initEncoding(javaElement);
  77   }
  78   /*
  79    * Initialize compilation unit encoding.
  80    * If we have a project, then get file name corresponding IFile and retrieve its encoding using
  81    * new API for encoding.
  82    * In case of a class file, then go through project in order to let the possibility to retrieve
  83    * a corresponding source file resource.
  84    * If we have a compilation unit, then get encoding from its resource directly...
  85    */
  86   private void initEncoding(IJavaElement javaElement) {
  87         if (javaElement != null) {
  88                 try {
  89                         IJavaProject javaProject = javaElement.getJavaProject();
  90                         switch (javaElement.getElementType()) {
  91                                 case IJavaElement.COMPILATION_UNIT:
  92                                         IFile file = (IFile) javaElement.getResource();
  93                                         if (file != null) {
  94                                                 this.encoding = file.getCharset();
  95                                                 break;
  96                                         }
  97                                         // if no file, then get project encoding
  98                                 default:
  99                                         IProject project = (IProject) javaProject.getResource();
 100                                         if (project != null) {
 101                                                 this.encoding = project.getDefaultCharset();
 102                                         }
 103                                         break;
 104                         }
 105                 } catch (CoreException e1) {
 106                         this.encoding = null;
 107                 }
 108         } else  {
 109                 this.encoding = null;
 110         }
 111   }
 112   public char[] getContents() {
 113     if (this.contents != null)
 114       return this.contents; // answer the cached source
 115
 116     // otherwise retrieve it
 117     try {
 118       return Util.getFileCharContent(new File(new String(fileName)), this.encoding);
 119     } catch (IOException e) {
 120     }
 121     return CharOperation.NO_CHAR;
 122   }
 123   public char[] getFileName() {
 124     return this.fileName;
 125   }
 126   public char[] getMainTypeName() {
 127     return this.mainTypeName;
 128   }
 129   public char[][] getPackageName() {
 130     return this.packageName;
 131   }
 132   public String toString() {
 133     return "CompilationUnit: " + new String(fileName); //$NON-NLS-1$
 134   }
 135
 136
 137 }