Read array of objects from file by custom separator - c++

Question

I have model class for my objects:
class customClass {
string s1;
string s2;
string s3;
}
and file like this:
text1;text1;text1 text1 text1...
text2;text2;text2 text2 text2...
...
and I want make array of objects where
s1 = "text1"
s2 = "text1"
s3 = "text1 text1 text1..."
...
My code:
infile.open("file.txt");
if (infile.is_open())
{
string line;
for (int i = 0; i < 3; i++)
{
infile >> line;
stringstream ss(line);
while (ss.good())
{
string substring;
getline(ss, substring, ';');
cout << substring <<endl;
}
}
}
But it separated every single word. How can I ignore whitespaces to make my 3rd string as text not as single word.

Answer 1

The reason it doesnt work for you is because infile >> line; will read up to the first space character instead of the whole line (this is when you need getline). Maybe something like this:
#include <string>
#include <iostream>
#include <fstream>
int main()
{
std::ofstream outfile("file.txt");
outfile <<
R"(text1;text1;text1 text1 text1...
text2;text2;text2 text2 text2...)";
outfile.close();
// read file
std::ifstream infile("file.txt");
std::string par1, par2, par3;
while (std::getline(infile, par1, ';') && std::getline(infile, par2, ';') && std::getline(infile, par3))
std::cout << par1 << " | " << par2 << " | " << par3 << std::endl;
}
Demo: http://coliru.stacked-crooked.com/view?id=eb52001b5d4ecbed

Answer 2

Read all line with getline function. Default >> operation get values until \n, (space) character.
#include <iostream>
#include <fstream>
#include <string.h>
#include <sstream>
using namespace std;
class CustomClass
{
public:
string s1;
string s2;
string s3;
};
int main()
{
ifstream infile;
infile.open("test.txt");
if (infile.is_open())
{
while (!infile.eof())
{
string line;
getline(infile, line);
stringstream ss(line);
CustomClass cls;
getline(ss, cls.s1, ';');
getline(ss, cls.s2, ';');
getline(ss, cls.s3, ';');
cout << cls.s1 << " - " << cls.s2 << " - " << cls.s3 << endl;
}
}
return 0;
}

Answer 3

Just don't read single string at the begining, also I added the loop until the end of file, so your code would look like:
std::ifstream infile("file.txt");
std::string line;
if (infile.is_open())
{
string line;
while (std::getline(infile, line)) {
std::stringstream ss(line);
string substring;
while (getline(ss, substring, ';')) {
cout << substring <<endl;
}
}
}