I just wrote this for iOS 4.0+ (because it uses NSRegularExpression). It handles dates with or without timezone offsets. Seems to work pretty well, what do you think?
+ (NSDate *)mfDateFromDotNetJSONString:(NSString *)string {
static NSRegularExpression *dateRegEx = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
dateRegEx = [[NSRegularExpression alloc] initWithPattern:@"^\/date\((-?\d++)(?:([+-])(\d{2})(\d{2}))?\)\/$" options:NSRegularExpressionCaseInsensitive error:nil];
});
NSTextCheckingResult *regexResult = [dateRegEx firstMatchInString:string options:0 range:NSMakeRange(0, [string length])];
if (regexResult) {
// milliseconds
NSTimeInterval seconds = [[string substringWithRange:[regexResult rangeAtIndex:1]] doubleValue] / 1000.0;
// timezone offset
if ([regexResult rangeAtIndex:2].location != NSNotFound) {
NSString *sign = [string substringWithRange:[regexResult rangeAtIndex:2]];
// hours
seconds += [[NSString stringWithFormat:@"%@%@", sign, [string substringWithRange:[regexResult rangeAtIndex:3]]] doubleValue] * 60.0 * 60.0;
// minutes
seconds += [[NSString stringWithFormat:@"%@%@", sign, [string substringWithRange:[regexResult rangeAtIndex:4]]] doubleValue] * 60.0;
}
return [NSDate dateWithTimeIntervalSince1970:seconds];
}
return nil;
}
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…