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0001 //
0002 // ********************************************************************
0003 // * License and Disclaimer                                           *
0004 // *                                                                  *
0005 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
0006 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
0007 // * conditions of the Geant4 Software License,  included in the file *
0008 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
0009 // * include a list of copyright holders.                             *
0010 // *                                                                  *
0011 // * Neither the authors of this software system, nor their employing *
0012 // * institutes,nor the agencies providing financial support for this *
0013 // * work  make  any representation or  warranty, express or implied, *
0014 // * regarding  this  software system or assume any liability for its *
0015 // * use.  Please see the license in the file  LICENSE  and URL above *
0016 // * for the full disclaimer and the limitation of liability.         *
0017 // *                                                                  *
0018 // * This  code  implementation is the result of  the  scientific and *
0019 // * technical work of the GEANT4 collaboration.                      *
0020 // * By using,  copying,  modifying or  distributing the software (or *
0021 // * any work based  on the software)  you  agree  to acknowledge its *
0022 // * use  in  resulting  scientific  publications,  and indicate your *
0023 // * acceptance of all terms of the Geant4 Software license.          *
0024 // ********************************************************************
0025 //
0026 // G4FileUtilities
0027 //
0028 // Class Description:
0029 //
0030 // File utilities to access files with POSIX interface
0031 
0032 // Author: Youhei Morita, 24.08.2001
0033 // --------------------------------------------------------------------
0034 #ifndef G4FILE_UTILITIES_HH
0035 #define G4FILE_UTILITIES_HH 1
0036 
0037 #include "G4Types.hh"
0038 #include "G4String.hh"
0039 
0040 #include <sys/types.h>
0041 #include <fcntl.h>
0042 #include <unistd.h>
0043 #include <errno.h>
0044 #include <stdlib.h>
0045 #include <string.h>
0046 #include <string>
0047 #include <iostream>
0048 
0049 class G4FileUtilities
0050 {
0051   public:
0052 
0053     G4FileUtilities();
0054       // Constructor
0055 
0056     ~G4FileUtilities();
0057       // Destructor
0058 
0059     G4bool FileExists(const G4String& file);
0060       // checks if the "file" exists.  returns true if it does
0061 
0062     std::string StrErrNo() const { return ::strerror(errno); }
0063       // returns the error message of the last system call as string
0064 
0065     G4int Shell(const G4String& str) { return ::system(str.c_str()); }
0066       // executes the shell command.  returns zero if success
0067 
0068     G4int CopyFile(const G4String& srcFile, const G4String& dstFile);
0069       // copies the "srcFile" to "dstFile".  returns zero if success
0070 
0071     G4int DeleteFile(const G4String& file, const G4String& option);
0072       // deletes the "file" with the "option".  returns zero if success
0073 
0074     std::string GetEnv(const G4String& env) { return ::getenv(env.c_str()); }
0075       // retuns the value of environment variable as string
0076 
0077 };
0078 
0079 #endif