C++ string template library

Question

I want simple C++ string based template library to replace strings at runtime.

For example, I will use

string template = \"My name is {{name}}\";
         


        

Answer 1

If you have a function that replaces all occurrences of a string with another string:

std::string replace_all(std::string str, const std::string &remove, const std::string &insert) 
{
    std::string::size_type pos = 0;
    while ((pos = str.find(remove, pos)) != std::string::npos)
    {
        str.replace(pos, remove.size(), insert);
        pos++;
    }

    return str;
}

Then you can do this:

std::string pattern = "My name is {{first_name}} {{last_name}} and I live in {{location}}";

std::string str = replace_all(replace_all(replace_all(pattern, 
                       "{{first_name}}", "Homer"), 
                       "{{last_name}}", "Simpson"), 
                       "{{location}}", "Springfield");