ctypes class ][ python에서 c++ class 사용하기

ctypes class ][ python에서 c++ class 사용하기

■ git

#
#
https://github.com/SpeeDr00t/code/tree/master/python/0x04-ctypes/0x01-helloworld
#
#

■ hello.cpp

//
//
//
// write by kyoung chip , jang
//
// g++ -c -fPIC hello.cpp -o hello.o 
// g++ -shared -Wl,-soname,libhello.so -o libhello.so  hello.o
//
//
#include <iostream>
#include <vector>
#include <string>
#include <iterator>

using namespace std;

class CHello
{
private:
    vector<string> m_vec;

public:

    void print()
    {

        vector<string>::iterator it;
        for( it = m_vec.begin(); it != m_vec.end(); it ++ )
        {
            cout << (*it) << endl;
        }

    }

    void push_back( string s )
    {
        m_vec.push_back( s );
    }
};

extern "C" {

    CHello* CHello_new()
    { 
        return new CHello(); 
    }

    void CHello_print( CHello * f)
    { 
        f->print(); 
    }

    void CHello_push_back( CHello * f , char * s )
    { 
        f->push_back(s); 
    }
}

■ hello.py

#
#
# write by kyoung chip , jang
#
# python 3.6
#
#
from ctypes import cdll

class CHello(object):

    def __init__( self ):

        self.lib = cdll.LoadLibrary('./libhello.so')
        self.obj = self.lib.CHello_new()

    def printOut( self ):

        self.lib.CHello_print( self.obj )

    def push_back( self , s ) :
        
        self.lib.CHello_push_back( self.obj, s )

if __name__ == '__main__':

    f = CHello()
    f.push_back("-------------------------------------")
    f.push_back("  hello world ")
    f.push_back("-------------------------------------")
    f.printOut()