private int initializeBuilder(int kind, boolean forBuild) throws CoreException {
    // some calls just need the nameEnvironment initialized so skip the rest
    this.javaProject = (JavaProject) JavaCore.create(this.currentProject);
    this.workspaceRoot = this.currentProject.getWorkspace().getRoot();

    if (forBuild) {
      // cache the known participants for this project
      this.participants =
          JavaModelManager.getJavaModelManager()
              .compilationParticipants
              .getCompilationParticipants(this.javaProject);
      if (this.participants != null)
        for (int i = 0, l = this.participants.length; i < l; i++)
          if (this.participants[i].aboutToBuild(this.javaProject)
              == CompilationParticipant.NEEDS_FULL_BUILD) kind = FULL_BUILD;

      // Flush the existing external files cache if this is the beginning of a build cycle
      String projectName = this.currentProject.getName();
      if (builtProjects == null || builtProjects.contains(projectName)) {
        builtProjects = new ArrayList();
      }
      builtProjects.add(projectName);
    }

    this.binaryLocationsPerProject = new SimpleLookupTable(3);
    this.nameEnvironment =
        new NameEnvironment(
            this.workspaceRoot, this.javaProject, this.binaryLocationsPerProject, this.notifier);

    if (forBuild) {
      String filterSequence =
          this.javaProject.getOption(JavaCore.CORE_JAVA_BUILD_RESOURCE_COPY_FILTER, true);
      char[][] filters =
          filterSequence != null && filterSequence.length() > 0
              ? CharOperation.splitAndTrimOn(',', filterSequence.toCharArray())
              : null;
      if (filters == null) {
        this.extraResourceFileFilters = null;
        this.extraResourceFolderFilters = null;
      } else {
        int fileCount = 0, folderCount = 0;
        for (int i = 0, l = filters.length; i < l; i++) {
          char[] f = filters[i];
          if (f.length == 0) continue;
          if (f[f.length - 1] == '/') folderCount++;
          else fileCount++;
        }
        this.extraResourceFileFilters = new char[fileCount][];
        this.extraResourceFolderFilters = new String[folderCount];
        for (int i = 0, l = filters.length; i < l; i++) {
          char[] f = filters[i];
          if (f.length == 0) continue;
          if (f[f.length - 1] == '/')
            this.extraResourceFolderFilters[--folderCount] = new String(f, 0, f.length - 1);
          else this.extraResourceFileFilters[--fileCount] = f;
        }
      }
    }
    return kind;
  }
 boolean filterExtraResource(IResource resource) {
   if (this.extraResourceFileFilters != null) {
     char[] name = resource.getName().toCharArray();
     for (int i = 0, l = this.extraResourceFileFilters.length; i < l; i++)
       if (CharOperation.match(this.extraResourceFileFilters[i], name, true)) return true;
   }
   if (this.extraResourceFolderFilters != null) {
     IPath path = resource.getProjectRelativePath();
     String pathName = path.toString();
     int count = path.segmentCount();
     if (resource.getType() == IResource.FILE) count--;
     for (int i = 0, l = this.extraResourceFolderFilters.length; i < l; i++)
       if (pathName.indexOf(this.extraResourceFolderFilters[i]) != -1)
         for (int j = 0; j < count; j++)
           if (this.extraResourceFolderFilters[i].equals(path.segment(j))) return true;
   }
   return false;
 }