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/*=========================================================================
Program: Visualization Toolkit
Module: vtkPDirectory.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
// .NAME vtkPDirectory -- parallel wrapper for VTK Directory and vtkDirectory
// .SECTION Description
// vtkPDirectory provides a portable way of finding the names of the files
// in a system directory where process 0 finds the information and
// broadcasts it to other processes. It tries to replicate the API for both
// Directory and vtkDirectory though there are slight mismatches between the
// two. This is a blocking collective operation.
#ifndef vtkPDirectory_h
#define vtkPDirectory_h
#include "vtkParallelCoreModule.h" // For export macro
#include "vtkObject.h"
#include <string> // for string functions in Directory
class vtkStringArray;
class VTKPARALLELCORE_EXPORT vtkPDirectory : public vtkObject
{
public:
static vtkPDirectory *New();
vtkTypeMacro(vtkPDirectory,vtkObject);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Open/Load the specified directory and load the names of the files
// in that directory. false/0 is returned if the directory can not be
// opened, true/1 if it is opened. The reason that there are two versions
// of this is that Directory uses Load() and vtkDirectory uses Open()
// for this functionality.
bool Load(const std::string&);
int Open(const char* dir);
// Description:
// Return the number of files in the current directory.
vtkIdType GetNumberOfFiles() const;
// Description:
// Return the file at the given index, the indexing is 0 based
const char* GetFile(vtkIdType index) const;
// Description:
// Return true if the file is a directory. If the file is not an
// absolute path, it is assumed to be relative to the opened
// directory. If no directory has been opened, it is assumed to
// be relative to the current working directory.
int FileIsDirectory(const char *name);
// Description:
// Get an array that contains all the file names.
vtkGetObjectMacro(Files, vtkStringArray);
// Description:
// Return the path to Open'ed directory
const char* GetPath() const;
// Description:
// Clear the internal structure. Used internally at beginning of Load(...)
// to clear the cache.
void Clear();
protected:
vtkPDirectory();
~vtkPDirectory();
private:
// Array of Files
vtkStringArray *Files; // VTK array of files
// Path to Open'ed directory
std::string Path;
vtkPDirectory(const vtkPDirectory&); // Not implemented.
void operator=(const vtkPDirectory&); // Not implemented.
}; // End Class: vtkPDirectory
#endif
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