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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
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