net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/core/builder/ClasspathDirectory.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.builder;
  12
  13 import net.sourceforge.phpdt.internal.compiler.env.NameEnvironmentAnswer;
  14 import net.sourceforge.phpdt.internal.core.util.SimpleLookupTable;
  15
  16 import org.eclipse.core.resources.IContainer;
  17 import org.eclipse.core.resources.IResource;
  18 import org.eclipse.core.runtime.CoreException;
  19 import org.eclipse.core.runtime.IPath;
  20
  21 class ClasspathDirectory extends ClasspathLocation {
  22
  23         IContainer binaryFolder; // includes .class files for a single directory
  24
  25         boolean isOutputFolder;
  26
  27         String binaryLocation;
  28
  29         SimpleLookupTable directoryCache;
  30
  31         String[] missingPackageHolder = new String[1];
  32
  33         ClasspathDirectory(IContainer binaryFolder, boolean isOutputFolder) {
  34                 this.binaryFolder = binaryFolder;
  35                 this.isOutputFolder = isOutputFolder;
  36                 // IPath location = binaryFolder.getLocation();
  37                 // this.binaryLocation = location != null ?
  38                 // location.addTrailingSeparator().toString() : ""; //$NON-NLS-1$
  39                 this.binaryLocation = "";
  40                 this.directoryCache = new SimpleLookupTable(5);
  41         }
  42
  43         public void cleanup() {
  44                 this.directoryCache = null;
  45         }
  46
  47         String[] directoryList(String qualifiedPackageName) {
  48                 String[] dirList = (String[]) directoryCache.get(qualifiedPackageName);
  49                 if (dirList == missingPackageHolder)
  50                         return null; // package exists in another classpath directory or
  51                                                         // jar
  52                 if (dirList != null)
  53                         return dirList;
  54
  55                 try {
  56                         IResource container = binaryFolder.findMember(qualifiedPackageName); // this
  57                                                                                                                                                                         // is a
  58                                                                                                                                                                         // case-sensitive
  59                                                                                                                                                                         // check
  60                         if (container instanceof IContainer) {
  61                                 IResource[] members = ((IContainer) container).members();
  62                                 dirList = new String[members.length];
  63                                 int index = 0;
  64                                 for (int i = 0, l = members.length; i < l; i++) {
  65                                         IResource m = members[i];
  66                                         // if (m.getType() == IResource.FILE &&
  67                                         // ProjectPrefUtil.isClassFileName(m.getName()))
  68                                         // // add exclusion pattern check here if we want to hide
  69                                         // .class files
  70                                         // dirList[index++] = m.getName();
  71                                 }
  72                                 if (index < dirList.length)
  73                                         System.arraycopy(dirList, 0, dirList = new String[index],
  74                                                         0, index);
  75                                 directoryCache.put(qualifiedPackageName, dirList);
  76                                 return dirList;
  77                         }
  78                 } catch (CoreException ignored) {
  79                 }
  80                 directoryCache.put(qualifiedPackageName, missingPackageHolder);
  81                 return null;
  82         }
  83
  84         boolean doesFileExist(String fileName, String qualifiedPackageName,
  85                         String qualifiedFullName) {
  86                 String[] dirList = directoryList(qualifiedPackageName);
  87                 if (dirList == null)
  88                         return false; // most common case
  89
  90                 for (int i = dirList.length; --i >= 0;)
  91                         if (fileName.equals(dirList[i]))
  92                                 return true;
  93                 return false;
  94         }
  95
  96         public boolean equals(Object o) {
  97                 if (this == o)
  98                         return true;
  99                 if (!(o instanceof ClasspathDirectory))
 100                         return false;
 101
 102                 return binaryFolder.equals(((ClasspathDirectory) o).binaryFolder);
 103         }
 104
 105         public NameEnvironmentAnswer findClass(String binaryFileName,
 106                         String qualifiedPackageName, String qualifiedBinaryFileName) {
 107                 if (!doesFileExist(binaryFileName, qualifiedPackageName,
 108                                 qualifiedBinaryFileName))
 109                         return null; // most common case
 110
 111                 // try {
 112                 // ClassFileReader reader = ClassFileReader.read(binaryLocation +
 113                 // qualifiedBinaryFileName);
 114                 // if (reader != null) return new NameEnvironmentAnswer(reader);
 115                 // } catch (Exception e) {} // treat as if class file is missing
 116                 return null;
 117         }
 118
 119         public IPath getProjectRelativePath() {
 120                 return binaryFolder.getProjectRelativePath();
 121         }
 122
 123         public boolean isOutputFolder() {
 124                 return isOutputFolder;
 125         }
 126
 127         public boolean isPackage(String qualifiedPackageName) {
 128                 return directoryList(qualifiedPackageName) != null;
 129         }
 130
 131         public void reset() {
 132                 this.directoryCache = new SimpleLookupTable(5);
 133         }
 134
 135         public String toString() {
 136                 return "Binary classpath directory " + binaryFolder.getFullPath().toString(); //$NON-NLS-1$
 137         }
 138 }