template <class T> void stringsToCSV(const T& tokens, string& s,
char sep)
{
s.erase();
for (typename T::const_iterator it = tokens.begin();
it != tokens.end(); it++) {
bool needquotes = false;
if (it->empty() ||
it->find_first_of(string(1, sep) + "\"\n") != string::npos) {
needquotes = true;
}
if (it != tokens.begin()) {
s.append(1, sep);
}
if (needquotes) {
s.append(1, '"');
}
for (unsigned int i = 0; i < it->length(); i++) {
char car = it->at(i);
if (car == '"') {
s.append(2, '"');
} else {
s.append(1, car);
}
}
if (needquotes) {
s.append(1, '"');
}
}
}
template <class T> void stringsToString(const T& tokens, string& s)
{
for (typename T::const_iterator it = tokens.begin();
it != tokens.end(); it++) {
bool hasblanks = false;
if (it->find_first_of(" \t\n") != string::npos) {
hasblanks = true;
}
if (it != tokens.begin()) {
s.append(1, ' ');
}
if (hasblanks) {
s.append(1, '"');
}
for (unsigned int i = 0; i < it->length(); i++) {
char car = it->at(i);
if (car == '"') {
s.append(1, '\\');
s.append(1, car);
} else {
s.append(1, car);
}
}
if (hasblanks) {
s.append(1, '"');
}
}
}
