function parseDate(s, ignoreTimezone) { // ignoreTimezone defaults to true
if (typeof s == 'object') { // already a Date object
return s;
}
if (typeof s == 'number') { // a UNIX timestamp
return new Date(s * 1000);
}
if (typeof s == 'string') {
if (s.match(/^\d+(\.\d+)?$/)) { // a UNIX timestamp
return new Date(parseFloat(s) * 1000);
}
if (ignoreTimezone === undefined) {
ignoreTimezone = true;
}
return parseISO8601(s, ignoreTimezone) || (s ? new Date(s) : null);
}
// TODO: never return invalid dates (like from new Date(<string>)), return null instead
return null;
}
function parseISO8601(s, ignoreTimezone) { // ignoreTimezone defaults to false
// derived from http://delete.me.uk/2005/03/iso8601.html
// TODO: for a know glitch/feature, read tests/issue_206_parseDate_dst.html
var m = s.match(/^([0-9]{4})(-([0-9]{2})(-([0-9]{2})([T ]([0-9]{2}):([0-9]{2})(:([0-9]{2})(\.([0-9]+))?)?(Z|(([-+])([0-9]{2})(:?([0-9]{2}))?))?)?)?)?$/);