stringmerger.cc

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#include "base/stringmerger.h"
 
#include <string_view>
 
#include "base/stringbuilder.h"
 
 
namespace eu
{
    std::string
    StringMerger::merge(const std::vector<std::string>& strings) const
    {
        if(strings.empty())
        {
            return fmt::format("{}{}{}", start, empty, end);
        }
 
        auto ss = StringBuilder{};
 
        ss.add_view(start);
 
        const auto count = strings.size();
        for(std::vector<std::string>::size_type index = 0; index < count; ++index)
        {
            ss.add_view(before_each);
            ss.add_string(strings[index]);
 
            if(index == count - 1)
            {
                ss.add_view(final_after_each);
            }
            else
            {
                ss.add_view(after_each);
            }
 
            if(count != index + 1)
            { // if this item isn't the last one in the list
                if(count == index + 2)
                {
                    ss.add_view(final_separator);
                }
                else
                {
                    ss.add_view(separator);
                }
            }
        }
 
        ss.add_view(end);
 
        return ss.to_string();
    }
}