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  1.     #include <iostream>
  2.     #include <string>
  3.     #include <vector>
  4.     #include <list>
  5.     #include <boost/algorithm/string/classification.hpp> // Include boost::for is_any_of
  6.     #include <boost/algorithm/string/split.hpp>          // Include for boost::split
  7.  
  8.     using namespace std;
  9.  
  10.     class CharStarWrapper
  11.     {
  12.     	private:
  13.     		typedef std::vector<char> CharArray;
  14.     		typedef std::list<CharArray> StringList;
  15.     		typedef std::vector<const char *> ArgList;
  16.  
  17.     		const char** m_Args;
  18.     		StringList m_sList;
  19.     		ArgList m_cStrings;
  20.  
  21.         public:
  22.     		CharStarWrapper(const std::string & input) : m_Args(nullptr)
  23.     		{
  24.     			std::vector<std::string> args;
  25.     			boost::split(args, input, boost::is_any_of(" "), boost::token_compress_on);
  26.     			for (auto const &v : args)
  27.     			{
  28.     				// create an array of char and place on list
  29.     				m_sList.push_back(CharArray(v.begin(), v.end()));
  30.  
  31.     				// null terminate this entry
  32.     				m_sList.back().push_back(0);
  33.  
  34.     				// add the pointer to this entry to the vector of const char *.
  35.     				m_cStrings.push_back(&m_sList.back()[0]);
  36.     			}
  37.     			m_Args = m_cStrings.data();
  38.     		}
  39.  
  40.     		const char** getArgs() { return m_Args;  }
  41.     		int getArgCount() const { return static_cast<int>(m_cStrings.size()); }
  42.     };
  43.  
  44.     // Call this like main() 
  45.     void fake_main(int argc, const char **argv)
  46.     {
  47.        std::cout << "The number of arguments is " << argc << "\n";
  48.    	   for (int i = 0; i < argc; ++i) 
  49.     		std::cout << argv[i] << "\n";
  50.     }
  51.  
  52.     int main() {
  53.        	string arg = "test ./MyDirectoryName/OPQ_Arksoatn.txt 1 SOMETHING 1 2 3 4 5 6 7";
  54.     	CharStarWrapper wrapper(arg);
  55.         fake_main(wrapper.getArgCount(), wrapper.getArgs());        
  56.     }
  57.  
Success #stdin #stdout 0s 16080KB
comments (?)
stdin 
Standard input is empty
stdout 
The number of arguments is 11
test
./MyDirectoryName/OPQ_Arksoatn.txt
1
SOMETHING
1
2
3
4
5
6
7
https://ideone.com/4ZSt4n
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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