问从cpp文件中查找和替换行

EN

#include <iostream>
using namespace std;

 //to be replaced
 //to be replaced
 //to be replaced
 //to be replaced

 BLAH BLAH BLAH
 ...
 ...
 int main()
 {
 ...
 ...
 //to be replaced
 //to be replaced
 }
 //to be left as it is
 return 0;
 }

#include <iostream>
using namespace std;

 /* replaced
  *replaced
  *replaced
  *replaced
  */

 BLAH BLAH BLAH
 ...
 ...
 int main()
 {
 ...
 ...
 /*replaced
  *replaced
  */
 }
 //to be left as it is
 return 0;
 }

#include <iostream>
#include <fstream>
#include <string>
#include <cstdlib>
#include <vector>
#include <sys/stat.h>
using namespace std;

bool replace(std::string& str, const std::string& from, const std::string& to) {
size_t start_pos = str.find(from);
//cout << "within function " << "string is " << str << "from position, to position " << from << "," << to << '\n';
if(start_pos == std::string::npos)
    return false;
str.replace(start_pos, from.length(), to);
return true;
}



int main (int argc, char* argv[])
{
string line;
int linecount=0, linearray[1000],temp=0;
std::vector<int> startcom, endcom; 
ofstream TempFile ("xyz.tmp");

ifstream myfile (argv[1]);
if (myfile.is_open())
{
    while ( getline (myfile,line) )
    {
        linecount++;
        if (line.find("//") != std::string::npos)
        {   
            linearray[temp]=linecount;
            temp++;
            cout << "linecount->" <<linecount << "comment line" << line << '\n';
        }
    }
myfile.close();
}
else
{
    cout << "Unable to open file"; 
}
for(int k=0;k<temp;k++)
cout << "array elements are: " << linearray[k] << '\n';
cout << "size of temp is: " <<temp << '\n';
for(int i=0;i<temp;i++)
{
    int j=0;
    cout << "for loop " << i << " element is "<< linearray[i] <<'\n';
    if((linearray[i]+1) == linearray[i+1])
    {
        startcom.push_back(i);
        cout << "outer if part" << '\n';
        for(j=i+1; j < 10; j++)
        {
                    if((linearray[j]+1) == linearray[j+1])
                    {
                        cout << "still continuing" << "j value " << j << '\n';
                    }
                    else
                    {
                        startcom.push_back(j);
                        i=j;
                        cout << " inner else part for line " << j << '\n';
                    break;
                    }
        }
    cout << "possible multiple comment lines at line" << i << '\n';
    }
    else
    {
        cout << "outer else part" << '\n';
    }
cout << "array element " << linearray[i] << '\n';
}
//for listing out elements of startcom,endcom arrays
cout << "startcom value " << '\n';
for (std::vector<int>::iterator it = startcom.begin(); it != startcom.end(); ++it)
std::cout << ' ' << *it;
cout << "startcom size is" << startcom.size() << "\n";
linecount=0;
int tmpcount=0,a=0,b=0;
ifstream myfile1 (argv[1]);
for(tmpcount=0;tmpcount<startcom.size();tmpcount++)
{
if (myfile1.is_open())
{
    while ( getline (myfile1,line) )
    {
        linecount++;
        a=startcom.at(tmpcount);
        b=startcom.at(tmpcount+1);
        if (linecount == linearray[a] && a!= b)
        {   
            cout << "before replacing (startcom)  ---> " << "at line -->" << linecount << line << '\n';

            replace(line, "//", "/*");
            TempFile << line << '\n';
            //while(replace(line, "//", "/*"))
            //{
            //  cout << " success repace " << '\n';
            //}
            //linearray[temp]=linecount;
            //temp++;
            //cout << "linecount->" <<linecount << "this line contains //" << line << '\n';
            cout << "this line has been replaced ---> " << line << '\n';
        }

        else if (linecount == linearray[b] && a!= b)
        {   
            cout << "before replacing (endcom) ---> "  << "at line -->" << linecount << line << '\n';
            replace(line, "//", " *");
            TempFile << line << '\n';
            TempFile << "*/" << '\n';
            cout << "this line has been replaced ---> " << line << '\n';
        }
        else if (linecount > linearray[a] && linecount < linearray[b] && a!= b)
        {
            cout << "before replacing (start to end) ---> "  << "at line -->" << linecount << line << '\n';
            replace(line, "//", " *");
            TempFile << line << '\n';
            cout << "this line has been replaced ---> " << line << '\n';
        }
        else
        {
            cout << "No replacement " << "at line -->" << linecount << "\n" ;
            TempFile << line << '\n';
        }
    }
myfile1.close();
TempFile.close();
}
else
{
    cout << "Unable to open file" << '\n'; 
}

}

return 0;
}