Function bloguen::util::parse_date_format_specifier

pub fn parse_date_format_specifier(spec: &str) -> Option<Cow<[TimeFormatItem]>>

Parse a datetime specifier in the format_output() argument style.

A couple presets are accepted:

• RFC2822 – rfc2822, rfc_2822, RFC2822, RFC_2822
• RFC3339 – rfc3339, rfc_3339, RFC3339, RFC_3339

The standard strftime() syntax, but wrapped in "s.

Examples

assert_eq!(parse_date_format_specifier("rfc_2822"),
           Some(vec![Item::Fixed(Fixed::RFC2822)].into()));
assert_eq!(parse_date_format_specifier("RFC3339"),
           Some(vec![Item::Fixed(Fixed::RFC3339)].into()));

assert_eq!(parse_date_format_specifier("\"%Y %B %d\""),
           Some(StrftimeItems::new("%Y %B %d").collect()));

assert!(parse_date_format_specifier("epoch").is_none());