isAbsolute method
Whether path is absolute: on Windows a drive (C:\...), a UNC share
(\\server\share\...) or a rooted path (\... or /...), on POSIX a
leading /.
Implementation
bool isAbsolute(String path) {
if (!_windows) {
return path.startsWith('/');
}
if (RegExp(r'^[A-Za-z]:[\\/]').hasMatch(path)) {
return true;
}
return path.startsWith('/') || path.startsWith('\\');
}