www.pudn.com > TestSMailer.zip > FileHelper.h

//////////////////////////////////////////////////////////////////////////////// 
// General utilities : File I/O helper class 
// 
// Copyright (c) 2003 by Morning 
// http://morningspace.51.net 
// mailto:moyingzz@etang.com 
// 
// Permission to use, copy, modify, distribute and sell this program for any  
// purpose is hereby granted without fee, provided that the above copyright  
// notice appear in all copies and that both that copyright notice and this  
// permission notice appear in supporting documentation. 
// 
// It is provided "as is" without express or implied warranty. 
//////////////////////////////////////////////////////////////////////////////// 
 
#ifndef _FILE_HELPER_H_ 
#define _FILE_HELPER_H_ 
// 
#include  
#include  
#include  
#include  
// 
namespace MUtils { 
 
class FileHelper 
{ 
public: 
 
    // used to open binary file 
    static bool open(const std::string filename, std::string& content) 
    { 
        FILE *file = fopen(filename.c_str(), "rb"); 
 
        if (file == NULL) 
            return false; 
 
        fseek(file, 0, SEEK_END); 
        int len = ftell(file); 
		rewind(file); 
 
        char *buffer = new char[len]; 
        fread(buffer, sizeof(char), len, file); 
        content.assign(buffer, len); 
        delete []buffer; 
 
        fclose(file); 
        return true; 
    } 
 
    // used to open text file 
    static bool open(const std::string file_name, std::vector& lines) 
    { 
        std::ifstream file(file_name.c_str(), std::ios::in); 
        if (!file)  
        { 
            return false; 
        } 
 
        lines.clear(); 
        char buffer[buffer_size]; 
 
        while (file.getline(buffer, buffer_size, '\n')) 
        { 
            lines.push_back(buffer); 
        } 
         
        return true; 
    } 
 
private: 
 
    enum { buffer_size = 3000 }; 
}; 
 
} // namespace MUtils 
 
#endif // _FILE_HELPER_H_