tested datetime
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2 changed files with 259 additions and 112 deletions
367
src/datetime.rs
367
src/datetime.rs
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@ -6,7 +6,7 @@ use nom::{
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bytes::complete::{tag, tag_no_case, take_while, take_while1, take_while_m_n, is_a},
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character,
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character::is_digit,
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character::complete::{one_of, alphanumeric1},
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character::complete::{one_of, alphanumeric1, digit0},
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combinator::{map, opt, value},
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sequence::{preceded, terminated, tuple, delimited },
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};
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@ -32,13 +32,15 @@ const HOUR: i32 = 60 * MIN;
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/// due to an error in RFC0822 but are interpreted as their respective
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/// timezone according to the RFC5322 definition
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pub fn section(input: &str) -> IResult<&str, Option<DateTime<FixedOffset>>> {
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map(tuple((
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opt(terminated(day_of_week, tag(","))),
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date, time_of_day, zone,
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map(terminated(
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alt((
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tuple((opt(terminated(strict_day_of_week, tag(","))), strict_date, strict_time_of_day, strict_zone )),
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tuple((opt(terminated(obs_day_of_week, tag(","))), obs_date, obs_time_of_day, alt((strict_zone, obs_zone)) )),
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)),
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opt(cfws)
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)), |res| {
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), |res| {
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match res {
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(_, Some(date), Some(time), Some(tz), _) => {
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(_, Some(date), Some(time), Some(tz)) => {
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date.and_time(time).and_local_timezone(tz).earliest()
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},
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_ => None,
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@ -47,21 +49,17 @@ pub fn section(input: &str) -> IResult<&str, Option<DateTime<FixedOffset>>> {
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}
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/// day-of-week = ([FWS] day-name) / obs-day-of-week
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fn day_of_week(input: &str) -> IResult<&str, &str> {
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alt((day_of_week_strict, obs_day_of_week))(input)
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}
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fn day_of_week_strict(input: &str) -> IResult<&str, &str> {
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fn strict_day_of_week(input: &str) -> IResult<&str, &str> {
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preceded(opt(fws), day_name)(input)
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}
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/// obs-day-of-week = [CFWS] day-name [CFWS]
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fn obs_day_of_week(input: &str) -> IResult<&str, &str> {
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delimited(opt(cfws), day_name, opt(cfws))(input)
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}
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/// day-name = "Mon" / "Tue" / "Wed" / "Thu" /
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/// "Fri" / "Sat" / "Sun"
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fn day_name(input: &str) -> IResult<&str, &str> {
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alt((
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tag_no_case("Mon"),
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@ -75,23 +73,27 @@ fn day_name(input: &str) -> IResult<&str, &str> {
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}
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/// date = day month year
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fn date(input: &str) -> IResult<&str, Option<NaiveDate>> {
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fn strict_date(input: &str) -> IResult<&str, Option<NaiveDate>> {
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map(
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tuple((day, month, year)),
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tuple((strict_day, month, strict_year)),
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|(d, m, y)| NaiveDate::from_ymd_opt(y, m, d)
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)(input)
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}
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/// date = day month year
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fn obs_date(input: &str) -> IResult<&str, Option<NaiveDate>> {
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map(
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tuple((obs_day, month, obs_year)),
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|(d, m, y)| NaiveDate::from_ymd_opt(y, m, d)
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)(input)
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}
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/// day = ([FWS] 1*2DIGIT FWS) / obs-day
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/// obs-day = [CFWS] 1*2DIGIT [CFWS]
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fn day(input: &str) -> IResult<&str, u32> {
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alt((day_strict, obs_day))(input)
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}
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fn day_strict(input: &str) -> IResult<&str, u32> {
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fn strict_day(input: &str) -> IResult<&str, u32> {
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delimited(opt(fws), character::complete::u32, fws)(input)
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}
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/// obs-day = [CFWS] 1*2DIGIT [CFWS]
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fn obs_day(input: &str) -> IResult<&str, u32> {
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delimited(opt(cfws), character::complete::u32, opt(cfws))(input)
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}
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@ -117,61 +119,63 @@ fn month(input: &str) -> IResult<&str, u32> {
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}
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/// year = (FWS 4*DIGIT FWS) / obs-year
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/// obs-year = [CFWS] 2*DIGIT [CFWS]
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fn year(input: &str) -> IResult<&str, i32> {
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alt((strict_year, obs_year))(input)
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}
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fn strict_year(input: &str) -> IResult<&str, i32> {
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delimited(fws, character::complete::i32, fws)(input)
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delimited(
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fws,
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map(
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terminated(take_while_m_n(4,9,|c| c >= '\x30' && c <= '\x39'), digit0),
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|d: &str| d.parse::<i32>().unwrap()),
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fws,
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)(input)
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}
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/// obs-year = [CFWS] 2*DIGIT [CFWS]
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fn obs_year(input: &str) -> IResult<&str, i32> {
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map(delimited(opt(cfws), character::complete::i32, opt(cfws)),
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|d: i32| if d >= 0 && d <= 49 {
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2000 + d
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} else if d >= 50 && d <= 999 {
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1900 + d
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} else {
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d
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})(input)
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map(delimited(
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opt(cfws),
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terminated(take_while_m_n(2,7,|c| c >= '\x30' && c <= '\x39'), digit0),
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opt(cfws)
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), |cap: &str| {
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let d = cap.parse::<i32>().unwrap();
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if d >= 0 && d <= 49 {
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2000 + d
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} else if d >= 50 && d <= 999 {
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1900 + d
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} else {
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d
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}
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})(input)
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}
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/// time-of-day = hour ":" minute [ ":" second ]
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///
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fn time_of_day(input: &str) -> IResult<&str, Option<NaiveTime>> {
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fn strict_time_of_day(input: &str) -> IResult<&str, Option<NaiveTime>> {
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map(
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tuple((character::complete::u32, tag(":"), character::complete::u32, opt(preceded(tag(":"), character::complete::u32)))),
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tuple((strict_time_digit, tag(":"), strict_time_digit, opt(preceded(tag(":"), strict_time_digit)))),
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|(hour, _, minute, maybe_sec)| NaiveTime::from_hms_opt(hour, minute, maybe_sec.unwrap_or(0)),
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)(input)
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}
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/// time-of-day = hour ":" minute [ ":" second ]
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fn obs_time_of_day(input: &str) -> IResult<&str, Option<NaiveTime>> {
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map(
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tuple((obs_time_digit, tag(":"), obs_time_digit, opt(preceded(tag(":"), obs_time_digit)))),
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|(hour, _, minute, maybe_sec)| NaiveTime::from_hms_opt(hour, minute, maybe_sec.unwrap_or(0)),
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)(input)
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}
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fn strict_time_digit(input: &str) -> IResult<&str, u32> {
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character::complete::u32(input)
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}
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fn obs_time_digit(input: &str) -> IResult<&str, u32> {
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delimited(opt(cfws), character::complete::u32, opt(cfws))(input)
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}
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/// Obsolete zones
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///
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/// ```abnf
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/// zone = (FWS ( "+" / "-" ) 4DIGIT) / obs-zone
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/// obs-zone = "UT" / "GMT" / ; Universal Time
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/// ; North American UT
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/// ; offsets
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/// "EST" / "EDT" / ; Eastern: - 5/ - 4
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/// "CST" / "CDT" / ; Central: - 6/ - 5
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/// "MST" / "MDT" / ; Mountain: - 7/ - 6
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/// "PST" / "PDT" / ; Pacific: - 8/ - 7
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/// ;
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/// %d65-73 / ; Military zones - "A"
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/// %d75-90 / ; through "I" and "K"
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/// %d97-105 / ; through "Z", both
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/// %d107-122 / ; upper and lower case
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/// ;
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/// 1*(ALPHA / DIGIT) ; Unknown legacy timezones
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/// zone = (FWS ( "+" / "-" ) 4DIGIT) / (FWS obs-zone)
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/// ```
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///
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///
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fn zone(input: &str) -> IResult<&str, Option<FixedOffset>> {
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alt((strict_zone, obs_zone))(input)
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}
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fn strict_zone(input: &str) -> IResult<&str, Option<FixedOffset>> {
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map(
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tuple((opt(fws), is_a("+-"), take_while_m_n(2,2,|c| c >= '\x30' && c <= '\x39'), take_while_m_n(2,2,|c| c >= '\x30' && c <= '\x39'))),
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@ -186,61 +190,204 @@ fn strict_zone(input: &str) -> IResult<&str, Option<FixedOffset>> {
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)(input)
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}
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/// obsole zone
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///
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/// obs-zone = "UT" / "GMT" / ; Universal Time
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/// ; North American UT
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/// ; offsets
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/// "EST" / "EDT" / ; Eastern: - 5/ - 4
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/// "CST" / "CDT" / ; Central: - 6/ - 5
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/// "MST" / "MDT" / ; Mountain: - 7/ - 6
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/// "PST" / "PDT" / ; Pacific: - 8/ - 7
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/// ;
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/// %d65-73 / ; Military zones - "A"
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/// %d75-90 / ; through "I" and "K"
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/// %d97-105 / ; through "Z", both
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/// %d107-122 / ; upper and lower case
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/// ;
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/// 1*(ALPHA / DIGIT) ; Unknown legacy timezones
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fn obs_zone(input: &str) -> IResult<&str, Option<FixedOffset>> {
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// The writing of this function is volontarily verbose
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// to keep it straightforward to understand.
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// @FIXME: Could return a TimeZone and not an Option<TimeZone>
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// as it could be determined at compile time if values are correct
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// and panic at this time if not. But not sure how to do it without unwrap.
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alt((
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// Legacy UTC/GMT
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value(FixedOffset::west_opt(0 * HOUR), alt((tag("UT"), tag("GMT")))),
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// The writing of this function is volontarily verbose
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// to keep it straightforward to understand.
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// @FIXME: Could return a TimeZone and not an Option<TimeZone>
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// as it could be determined at compile time if values are correct
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// and panic at this time if not. But not sure how to do it without unwrap.
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preceded(
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opt(fws),
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alt((
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// Legacy UTC/GMT
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value(FixedOffset::west_opt(0 * HOUR), alt((tag("UTC"), tag("UT"), tag("GMT")))),
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// USA Timezones
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value(FixedOffset::west_opt(4 * HOUR), tag("EDT")),
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value(FixedOffset::west_opt(5 * HOUR), alt((tag("EST"), tag("CDT")))),
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value(FixedOffset::west_opt(6 * HOUR), alt((tag("CST"), tag("MDT")))),
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value(FixedOffset::west_opt(7 * HOUR), alt((tag("MST"), tag("PDT")))),
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value(FixedOffset::west_opt(8 * HOUR), tag("PST")),
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// USA Timezones
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value(FixedOffset::west_opt(4 * HOUR), tag("EDT")),
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value(FixedOffset::west_opt(5 * HOUR), alt((tag("EST"), tag("CDT")))),
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value(FixedOffset::west_opt(6 * HOUR), alt((tag("CST"), tag("MDT")))),
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value(FixedOffset::west_opt(7 * HOUR), alt((tag("MST"), tag("PDT")))),
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value(FixedOffset::west_opt(8 * HOUR), tag("PST")),
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// Military Timezone UTC
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value(FixedOffset::west_opt(0 * HOUR), tag("Z")),
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// Military Timezone UTC
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value(FixedOffset::west_opt(0 * HOUR), tag("Z")),
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// Military Timezones East
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map(one_of("ABCDEFGHIKLMabcdefghiklm"), |c| match c {
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'A' | 'a' => FixedOffset::east_opt(1 * HOUR),
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'B' | 'b' => FixedOffset::east_opt(2 * HOUR),
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'C' | 'c' => FixedOffset::east_opt(3 * HOUR),
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'D' | 'd' => FixedOffset::east_opt(4 * HOUR),
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'E' | 'e' => FixedOffset::east_opt(5 * HOUR),
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'F' | 'f' => FixedOffset::east_opt(6 * HOUR),
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'G' | 'g' => FixedOffset::east_opt(7 * HOUR),
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'H' | 'h' => FixedOffset::east_opt(8 * HOUR),
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'I' | 'i' => FixedOffset::east_opt(9 * HOUR),
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'K' | 'k' => FixedOffset::east_opt(10 * HOUR),
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'L' | 'l' => FixedOffset::east_opt(11 * HOUR),
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'M' | 'm' => FixedOffset::east_opt(12 * HOUR),
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_ => unreachable!(),
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}),
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// Military Timezones East
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map(one_of("ABCDEFGHIKLMabcdefghiklm"), |c| match c {
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'A' | 'a' => FixedOffset::east_opt(1 * HOUR),
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'B' | 'b' => FixedOffset::east_opt(2 * HOUR),
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'C' | 'c' => FixedOffset::east_opt(3 * HOUR),
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'D' | 'd' => FixedOffset::east_opt(4 * HOUR),
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'E' | 'e' => FixedOffset::east_opt(5 * HOUR),
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'F' | 'f' => FixedOffset::east_opt(6 * HOUR),
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'G' | 'g' => FixedOffset::east_opt(7 * HOUR),
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'H' | 'h' => FixedOffset::east_opt(8 * HOUR),
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'I' | 'i' => FixedOffset::east_opt(9 * HOUR),
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'K' | 'k' => FixedOffset::east_opt(10 * HOUR),
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'L' | 'l' => FixedOffset::east_opt(11 * HOUR),
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'M' | 'm' => FixedOffset::east_opt(12 * HOUR),
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_ => unreachable!(),
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}),
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// Military Timezones West
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map(one_of("nopqrstuvwxyNOPQRSTUVWXY"), |c| match c {
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'N' | 'n' => FixedOffset::west_opt(1 * HOUR),
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'O' | 'o' => FixedOffset::west_opt(2 * HOUR),
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'P' | 'p' => FixedOffset::west_opt(3 * HOUR),
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'Q' | 'q' => FixedOffset::west_opt(4 * HOUR),
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'R' | 'r' => FixedOffset::west_opt(5 * HOUR),
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'S' | 's' => FixedOffset::west_opt(6 * HOUR),
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'T' | 't' => FixedOffset::west_opt(7 * HOUR),
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'U' | 'u' => FixedOffset::west_opt(8 * HOUR),
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'V' | 'v' => FixedOffset::west_opt(9 * HOUR),
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'W' | 'w' => FixedOffset::west_opt(10 * HOUR),
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'X' | 'x' => FixedOffset::west_opt(11 * HOUR),
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'Y' | 'y' => FixedOffset::west_opt(12 * HOUR),
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_ => unreachable!(),
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}),
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// Military Timezones West
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map(one_of("nopqrstuvwxyNOPQRSTUVWXY"), |c| match c {
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'N' | 'n' => FixedOffset::west_opt(1 * HOUR),
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'O' | 'o' => FixedOffset::west_opt(2 * HOUR),
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'P' | 'p' => FixedOffset::west_opt(3 * HOUR),
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'Q' | 'q' => FixedOffset::west_opt(4 * HOUR),
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'R' | 'r' => FixedOffset::west_opt(5 * HOUR),
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'S' | 's' => FixedOffset::west_opt(6 * HOUR),
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'T' | 't' => FixedOffset::west_opt(7 * HOUR),
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'U' | 'u' => FixedOffset::west_opt(8 * HOUR),
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'V' | 'v' => FixedOffset::west_opt(9 * HOUR),
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'W' | 'w' => FixedOffset::west_opt(10 * HOUR),
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'X' | 'x' => FixedOffset::west_opt(11 * HOUR),
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'Y' | 'y' => FixedOffset::west_opt(12 * HOUR),
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_ => unreachable!(),
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}),
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// Unknown timezone
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value(FixedOffset::west_opt(0 * HOUR), alphanumeric1),
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))(input)
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// Unknown timezone
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value(FixedOffset::west_opt(0 * HOUR), alphanumeric1),
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)),
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)(input)
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_section_rfc_strict() {
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assert_eq!(
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section("Fri, 21 Nov 1997 09:55:06 -0600"),
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Ok(("", Some(FixedOffset::west_opt(6 * HOUR).unwrap().with_ymd_and_hms(1997, 11, 21, 9, 55, 6).unwrap()))),
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);
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}
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#[test]
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fn test_section_received() {
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assert_eq!(
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section("Sun, 18 Jun 2023 15:39:08 +0200 (CEST)"),
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Ok(("", Some(FixedOffset::east_opt(2 * HOUR).unwrap().with_ymd_and_hms(2023, 6, 18, 15, 39, 8).unwrap()))),
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);
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}
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#[test]
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fn test_section_rfc_ws() {
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assert_eq!(
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section(
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r#"Thu,
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13
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Feb
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1969
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23:32
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-0330 (Newfoundland Time)"#),
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Ok(("", Some(FixedOffset::west_opt(3 * HOUR + 30 * MIN).unwrap().with_ymd_and_hms(1969, 2, 13, 23, 32, 00).unwrap()))),
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);
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}
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#[test]
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fn test_section_rfc_obs() {
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assert_eq!(
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section("21 Nov 97 09:55:06 GMT"),
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Ok(("", Some(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(1997, 11, 21, 9, 55, 6).unwrap()))),
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);
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}
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#[test]
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fn test_section_3digit_year() {
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assert_eq!(
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section("21 Nov 103 09:55:06 UT"),
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Ok(("", Some(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2003, 11, 21, 9, 55, 6).unwrap()))),
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);
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}
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#[test]
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fn test_section_rfc_obs_ws() {
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assert_eq!(
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section("Fri, 21 Nov 1997 09(comment): 55 : 06 -0600"),
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Ok(("", Some(FixedOffset::west_opt(6 * HOUR).unwrap().with_ymd_and_hms(1997, 11, 21, 9, 55, 6).unwrap()))),
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);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_section_2digit_year() {
|
||||
assert_eq!(
|
||||
section("21 Nov 23 09:55:06Z"),
|
||||
Ok(("", Some(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2023, 11, 21, 9, 55, 6).unwrap()))),
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_section_military_zone_east() {
|
||||
["a", "B", "c", "D", "e", "F", "g", "H", "i", "K", "l", "M"].iter().enumerate().for_each(|(i, x)| {
|
||||
assert_eq!(
|
||||
section(format!("1 Jan 22 08:00:00 {}", x).as_str()),
|
||||
Ok(("", Some(FixedOffset::east_opt((i as i32 + 1) * HOUR).unwrap().with_ymd_and_hms(2022, 01, 01, 8, 0, 0).unwrap())))
|
||||
);
|
||||
});
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_section_military_zone_west() {
|
||||
["N", "O", "P", "q", "r", "s", "T", "U", "V", "w", "x", "y"].iter().enumerate().for_each(|(i, x)| {
|
||||
assert_eq!(
|
||||
section(format!("1 Jan 22 08:00:00 {}", x).as_str()),
|
||||
Ok(("", Some(FixedOffset::west_opt((i as i32 + 1) * HOUR).unwrap().with_ymd_and_hms(2022, 01, 01, 8, 0, 0).unwrap())))
|
||||
);
|
||||
});
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_section_gmt() {
|
||||
assert_eq!(
|
||||
section("21 Nov 2023 07:07:07 +0000"),
|
||||
Ok(("", Some(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2023, 11, 21, 7, 7, 7).unwrap()))),
|
||||
);
|
||||
assert_eq!(
|
||||
section("21 Nov 2023 07:07:07 -0000"),
|
||||
Ok(("", Some(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2023, 11, 21, 7, 7, 7).unwrap()))),
|
||||
);
|
||||
assert_eq!(
|
||||
section("21 Nov 2023 07:07:07 Z"),
|
||||
Ok(("", Some(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2023, 11, 21, 7, 7, 7).unwrap()))),
|
||||
);
|
||||
assert_eq!(
|
||||
section("21 Nov 2023 07:07:07 GMT"),
|
||||
Ok(("", Some(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2023, 11, 21, 7, 7, 7).unwrap()))),
|
||||
);
|
||||
assert_eq!(
|
||||
section("21 Nov 2023 07:07:07 UT"),
|
||||
Ok(("", Some(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2023, 11, 21, 7, 7, 7).unwrap()))),
|
||||
);
|
||||
assert_eq!(
|
||||
section("21 Nov 2023 07:07:07 UTC"),
|
||||
Ok(("", Some(FixedOffset::east_opt(0).unwrap().with_ymd_and_hms(2023, 11, 21, 7, 7, 7).unwrap()))),
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_section_usa() {
|
||||
assert_eq!(
|
||||
section("21 Nov 2023 4:4:4 CST"),
|
||||
Ok(("", Some(FixedOffset::west_opt(6 * HOUR).unwrap().with_ymd_and_hms(2023, 11, 21, 4, 4, 4).unwrap()))),
|
||||
);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
//use imf_codec::header;
|
||||
use imf_codec::header;
|
||||
|
||||
fn main() {
|
||||
let hdr = r#"Return-Path: <gitlab@framasoft.org>
|
||||
|
|
@ -33,5 +33,5 @@ References: <1234@local.machine.example>
|
|||
This is a reply to your hello.
|
||||
"#;
|
||||
|
||||
//println!("{:?}", header::section(hdr));
|
||||
println!("{:?}", header::section(hdr));
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue