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Add missing military time zones #133

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Merged
staktrace merged 1 commit into from
May 14, 2025
Merged

Add missing military time zones #133

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30 changes: 30 additions & 0 deletions src/dateparse.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -170,9 +170,31 @@ pub fn dateparse(date: &str) -> Result<i64, MailParseError> {
"CST" | "MDT" => (600, -1),
"MST" | "PDT" => (700, -1),
"PST" => (800, -1),
// Military time zones (RFC 822, RFC 5322). A-M (except J) are negative offsets, N-Y are positive. J is not used.
"A" => (100, -1),
"B" => (200, -1),
"C" => (300, -1),
"D" => (400, -1),
"E" => (500, -1),
"F" => (600, -1),
"G" => (700, -1),
"H" => (800, -1),
"I" => (900, -1),
// "J" is not used
"K" => (1000, -1),
"L" => (1100, -1),
"M" => (1200, -1),
"N" => (100, 1),
"O" => (200, 1),
"P" => (300, 1),
"Q" => (400, 1),
"R" => (500, 1),
"S" => (600, 1),
"T" => (700, 1),
"U" => (800, 1),
"V" => (900, 1),
"W" => (1000, 1),
"X" => (1100, 1),
"Y" => (1200, 1),
_ => return Err(MailParseError::Generic("Invalid timezone")),
}
Expand Down Expand Up @@ -224,6 +246,14 @@ mod tests {
dateparse("Fri, 30 Nov 2012 20:57:23 GMT").unwrap(),
1354309043
);
assert_eq!(
dateparse("Fri, 30 Nov 2012 20:57:23 Q").unwrap(),
1354294643
);
assert_eq!(
dateparse("Fri, 30 Nov 2012 20:57:23 D").unwrap(),
1354323443
);

// Day cannot be zero.
assert!(dateparse("Wed, 0 Jan 1970 00:00:00 +0000").is_err());
Expand Down