StringPiece ltrimWhitespace(StringPiece sp) {
// Spaces other than ' ' characters are less common but should be
// checked. This configuration where we loop on the ' '
// separately from oddspaces was empirically fastest.
loop:
for (; !sp.empty() && sp.front() == ' '; sp.pop_front()) {
}
if (!sp.empty() && is_oddspace(sp.front())) {
sp.pop_front();
goto loop;
}
return sp;
}
StringPiece trim(StringPiece sp, StringPiece chars) {
for (; !sp.empty() && chars.find(sp.front()) != StringPiece::npos; ) {
sp.pop_front();
}
for (; !sp.empty() && chars.find(sp.back()) != StringPiece::npos; ) {
sp.pop_back();
}
return sp;
}