// This is a part of Chrono. // Portions copyright (c) 2015, John Nagle. // See README.md and LICENSE.txt for details. //! Date and time parsing routines. #![allow(deprecated)] use core::borrow::Borrow; use core::str; use core::usize; use super::scan; use super::{Fixed, InternalFixed, InternalInternal, Item, Numeric, Pad, Parsed}; use super::{ParseError, ParseErrorKind, ParseResult}; use super::{BAD_FORMAT, INVALID, NOT_ENOUGH, OUT_OF_RANGE, TOO_LONG, TOO_SHORT}; use {DateTime, FixedOffset, Weekday}; fn set_weekday_with_num_days_from_sunday(p: &mut Parsed, v: i64) -> ParseResult<()> { p.set_weekday(match v { 0 => Weekday::Sun, 1 => Weekday::Mon, 2 => Weekday::Tue, 3 => Weekday::Wed, 4 => Weekday::Thu, 5 => Weekday::Fri, 6 => Weekday::Sat, _ => return Err(OUT_OF_RANGE), }) } fn set_weekday_with_number_from_monday(p: &mut Parsed, v: i64) -> ParseResult<()> { p.set_weekday(match v { 1 => Weekday::Mon, 2 => Weekday::Tue, 3 => Weekday::Wed, 4 => Weekday::Thu, 5 => Weekday::Fri, 6 => Weekday::Sat, 7 => Weekday::Sun, _ => return Err(OUT_OF_RANGE), }) } fn parse_rfc2822<'a>(parsed: &mut Parsed, mut s: &'a str) -> ParseResult<(&'a str, ())> { macro_rules! try_consume { ($e:expr) => {{ let (s_, v) = $e?; s = s_; v }}; } // an adapted RFC 2822 syntax from Section 3.3 and 4.3: // // date-time = [ day-of-week "," ] date 1*S time *S // day-of-week = *S day-name *S // day-name = "Mon" / "Tue" / "Wed" / "Thu" / "Fri" / "Sat" / "Sun" // date = day month year // day = *S 1*2DIGIT *S // month = 1*S month-name 1*S // month-name = "Jan" / "Feb" / "Mar" / "Apr" / "May" / "Jun" / // "Jul" / "Aug" / "Sep" / "Oct" / "Nov" / "Dec" // year = *S 2*DIGIT *S // time = time-of-day 1*S zone // time-of-day = hour ":" minute [ ":" second ] // hour = *S 2DIGIT *S // minute = *S 2DIGIT *S // second = *S 2DIGIT *S // zone = ( "+" / "-" ) 4DIGIT / // "UT" / "GMT" / ; same as +0000 // "EST" / "CST" / "MST" / "PST" / ; same as -0500 to -0800 // "EDT" / "CDT" / "MDT" / "PDT" / ; same as -0400 to -0700 // 1*(%d65-90 / %d97-122) ; same as -0000 // // some notes: // // - quoted characters can be in any mixture of lower and upper cases. // // - we do not recognize a folding white space (FWS) or comment (CFWS). // for our purposes, instead, we accept any sequence of Unicode // white space characters (denoted here to `S`). any actual RFC 2822 // parser is expected to parse FWS and/or CFWS themselves and replace // it with a single SP (`%x20`); this is legitimate. // // - two-digit year < 50 should be interpreted by adding 2000. // two-digit year >= 50 or three-digit year should be interpreted // by adding 1900. note that four-or-more-digit years less than 1000 // are *never* affected by this rule. // // - mismatching day-of-week is always an error, which is consistent to // Chrono's own rules. // // - zones can range from `-9959` to `+9959`, but `FixedOffset` does not // support offsets larger than 24 hours. this is not *that* problematic // since we do not directly go to a `DateTime` so one can recover // the offset information from `Parsed` anyway. s = s.trim_left(); if let Ok((s_, weekday)) = scan::short_weekday(s) { if !s_.starts_with(',') { return Err(INVALID); } s = &s_[1..]; parsed.set_weekday(weekday)?; } s = s.trim_left(); parsed.set_day(try_consume!(scan::number(s, 1, 2)))?; s = scan::space(s)?; // mandatory parsed.set_month(1 + i64::from(try_consume!(scan::short_month0(s))))?; s = scan::space(s)?; // mandatory // distinguish two- and three-digit years from four-digit years let prevlen = s.len(); let mut year = try_consume!(scan::number(s, 2, usize::MAX)); let yearlen = prevlen - s.len(); match (yearlen, year) { (2, 0...49) => { year += 2000; } // 47 -> 2047, 05 -> 2005 (2, 50...99) => { year += 1900; } // 79 -> 1979 (3, _) => { year += 1900; } // 112 -> 2012, 009 -> 1909 (_, _) => {} // 1987 -> 1987, 0654 -> 0654 } parsed.set_year(year)?; s = scan::space(s)?; // mandatory parsed.set_hour(try_consume!(scan::number(s, 2, 2)))?; s = scan::char(s.trim_left(), b':')?.trim_left(); // *S ":" *S parsed.set_minute(try_consume!(scan::number(s, 2, 2)))?; if let Ok(s_) = scan::char(s.trim_left(), b':') { // [ ":" *S 2DIGIT ] parsed.set_second(try_consume!(scan::number(s_, 2, 2)))?; } s = scan::space(s)?; // mandatory if let Some(offset) = try_consume!(scan::timezone_offset_2822(s)) { // only set the offset when it is definitely known (i.e. not `-0000`) parsed.set_offset(i64::from(offset))?; } Ok((s, ())) } fn parse_rfc3339<'a>(parsed: &mut Parsed, mut s: &'a str) -> ParseResult<(&'a str, ())> { macro_rules! try_consume { ($e:expr) => {{ let (s_, v) = $e?; s = s_; v }}; } // an adapted RFC 3339 syntax from Section 5.6: // // date-fullyear = 4DIGIT // date-month = 2DIGIT ; 01-12 // date-mday = 2DIGIT ; 01-28, 01-29, 01-30, 01-31 based on month/year // time-hour = 2DIGIT ; 00-23 // time-minute = 2DIGIT ; 00-59 // time-second = 2DIGIT ; 00-58, 00-59, 00-60 based on leap second rules // time-secfrac = "." 1*DIGIT // time-numoffset = ("+" / "-") time-hour ":" time-minute // time-offset = "Z" / time-numoffset // partial-time = time-hour ":" time-minute ":" time-second [time-secfrac] // full-date = date-fullyear "-" date-month "-" date-mday // full-time = partial-time time-offset // date-time = full-date "T" full-time // // some notes: // // - quoted characters can be in any mixture of lower and upper cases. // // - it may accept any number of fractional digits for seconds. // for Chrono, this means that we should skip digits past first 9 digits. // // - unlike RFC 2822, the valid offset ranges from -23:59 to +23:59. // note that this restriction is unique to RFC 3339 and not ISO 8601. // since this is not a typical Chrono behavior, we check it earlier. parsed.set_year(try_consume!(scan::number(s, 4, 4)))?; s = scan::char(s, b'-')?; parsed.set_month(try_consume!(scan::number(s, 2, 2)))?; s = scan::char(s, b'-')?; parsed.set_day(try_consume!(scan::number(s, 2, 2)))?; s = match s.as_bytes().first() { Some(&b't') | Some(&b'T') => &s[1..], Some(_) => return Err(INVALID), None => return Err(TOO_SHORT), }; parsed.set_hour(try_consume!(scan::number(s, 2, 2)))?; s = scan::char(s, b':')?; parsed.set_minute(try_consume!(scan::number(s, 2, 2)))?; s = scan::char(s, b':')?; parsed.set_second(try_consume!(scan::number(s, 2, 2)))?; if s.starts_with('.') { let nanosecond = try_consume!(scan::nanosecond(&s[1..])); parsed.set_nanosecond(nanosecond)?; } let offset = try_consume!(scan::timezone_offset_zulu(s, |s| scan::char(s, b':'))); if offset <= -86_400 || offset >= 86_400 { return Err(OUT_OF_RANGE); } parsed.set_offset(i64::from(offset))?; Ok((s, ())) } /// Tries to parse given string into `parsed` with given formatting items. /// Returns `Ok` when the entire string has been parsed (otherwise `parsed` should not be used). /// There should be no trailing string after parsing; /// use a stray [`Item::Space`](./enum.Item.html#variant.Space) to trim whitespaces. /// /// This particular date and time parser is: /// /// - Greedy. It will consume the longest possible prefix. /// For example, `April` is always consumed entirely when the long month name is requested; /// it equally accepts `Apr`, but prefers the longer prefix in this case. /// /// - Padding-agnostic (for numeric items). /// The [`Pad`](./enum.Pad.html) field is completely ignored, /// so one can prepend any number of whitespace then any number of zeroes before numbers. /// /// - (Still) obeying the intrinsic parsing width. This allows, for example, parsing `HHMMSS`. pub fn parse<'a, I, B>(parsed: &mut Parsed, s: &str, items: I) -> ParseResult<()> where I: Iterator, B: Borrow>, { parse_internal(parsed, s, items).map(|_| ()).map_err(|(_s, e)| e) } fn parse_internal<'a, 'b, I, B>( parsed: &mut Parsed, mut s: &'b str, items: I, ) -> Result<&'b str, (&'b str, ParseError)> where I: Iterator, B: Borrow>, { macro_rules! try_consume { ($e:expr) => {{ match $e { Ok((s_, v)) => { s = s_; v } Err(e) => return Err((s, e)), } }}; } for item in items { match *item.borrow() { Item::Literal(prefix) => { if s.len() < prefix.len() { return Err((s, TOO_SHORT)); } if !s.starts_with(prefix) { return Err((s, INVALID)); } s = &s[prefix.len()..]; } #[cfg(any(feature = "alloc", feature = "std", test))] Item::OwnedLiteral(ref prefix) => { if s.len() < prefix.len() { return Err((s, TOO_SHORT)); } if !s.starts_with(&prefix[..]) { return Err((s, INVALID)); } s = &s[prefix.len()..]; } Item::Space(_) => { s = s.trim_left(); } #[cfg(any(feature = "alloc", feature = "std", test))] Item::OwnedSpace(_) => { s = s.trim_left(); } Item::Numeric(ref spec, ref _pad) => { use super::Numeric::*; type Setter = fn(&mut Parsed, i64) -> ParseResult<()>; let (width, signed, set): (usize, bool, Setter) = match *spec { Year => (4, true, Parsed::set_year), YearDiv100 => (2, false, Parsed::set_year_div_100), YearMod100 => (2, false, Parsed::set_year_mod_100), IsoYear => (4, true, Parsed::set_isoyear), IsoYearDiv100 => (2, false, Parsed::set_isoyear_div_100), IsoYearMod100 => (2, false, Parsed::set_isoyear_mod_100), Month => (2, false, Parsed::set_month), Day => (2, false, Parsed::set_day), WeekFromSun => (2, false, Parsed::set_week_from_sun), WeekFromMon => (2, false, Parsed::set_week_from_mon), IsoWeek => (2, false, Parsed::set_isoweek), NumDaysFromSun => (1, false, set_weekday_with_num_days_from_sunday), WeekdayFromMon => (1, false, set_weekday_with_number_from_monday), Ordinal => (3, false, Parsed::set_ordinal), Hour => (2, false, Parsed::set_hour), Hour12 => (2, false, Parsed::set_hour12), Minute => (2, false, Parsed::set_minute), Second => (2, false, Parsed::set_second), Nanosecond => (9, false, Parsed::set_nanosecond), Timestamp => (usize::MAX, false, Parsed::set_timestamp), // for the future expansion Internal(ref int) => match int._dummy {}, }; s = s.trim_left(); let v = if signed { if s.starts_with('-') { let v = try_consume!(scan::number(&s[1..], 1, usize::MAX)); 0i64.checked_sub(v).ok_or((s, OUT_OF_RANGE))? } else if s.starts_with('+') { try_consume!(scan::number(&s[1..], 1, usize::MAX)) } else { // if there is no explicit sign, we respect the original `width` try_consume!(scan::number(s, 1, width)) } } else { try_consume!(scan::number(s, 1, width)) }; set(parsed, v).map_err(|e| (s, e))?; } Item::Fixed(ref spec) => { use super::Fixed::*; match spec { &ShortMonthName => { let month0 = try_consume!(scan::short_month0(s)); parsed.set_month(i64::from(month0) + 1).map_err(|e| (s, e))?; } &LongMonthName => { let month0 = try_consume!(scan::short_or_long_month0(s)); parsed.set_month(i64::from(month0) + 1).map_err(|e| (s, e))?; } &ShortWeekdayName => { let weekday = try_consume!(scan::short_weekday(s)); parsed.set_weekday(weekday).map_err(|e| (s, e))?; } &LongWeekdayName => { let weekday = try_consume!(scan::short_or_long_weekday(s)); parsed.set_weekday(weekday).map_err(|e| (s, e))?; } &LowerAmPm | &UpperAmPm => { if s.len() < 2 { return Err((s, TOO_SHORT)); } let ampm = match (s.as_bytes()[0] | 32, s.as_bytes()[1] | 32) { (b'a', b'm') => false, (b'p', b'm') => true, _ => return Err((s, INVALID)), }; parsed.set_ampm(ampm).map_err(|e| (s, e))?; s = &s[2..]; } &Nanosecond | &Nanosecond3 | &Nanosecond6 | &Nanosecond9 => { if s.starts_with('.') { let nano = try_consume!(scan::nanosecond(&s[1..])); parsed.set_nanosecond(nano).map_err(|e| (s, e))?; } } &Internal(InternalFixed { val: InternalInternal::Nanosecond3NoDot }) => { if s.len() < 3 { return Err((s, TOO_SHORT)); } let nano = try_consume!(scan::nanosecond_fixed(s, 3)); parsed.set_nanosecond(nano).map_err(|e| (s, e))?; } &Internal(InternalFixed { val: InternalInternal::Nanosecond6NoDot }) => { if s.len() < 6 { return Err((s, TOO_SHORT)); } let nano = try_consume!(scan::nanosecond_fixed(s, 6)); parsed.set_nanosecond(nano).map_err(|e| (s, e))?; } &Internal(InternalFixed { val: InternalInternal::Nanosecond9NoDot }) => { if s.len() < 9 { return Err((s, TOO_SHORT)); } let nano = try_consume!(scan::nanosecond_fixed(s, 9)); parsed.set_nanosecond(nano).map_err(|e| (s, e))?; } &TimezoneName => { try_consume!(scan::timezone_name_skip(s)); } &TimezoneOffsetColon | &TimezoneOffset => { let offset = try_consume!(scan::timezone_offset( s.trim_left(), scan::colon_or_space )); parsed.set_offset(i64::from(offset)).map_err(|e| (s, e))?; } &TimezoneOffsetColonZ | &TimezoneOffsetZ => { let offset = try_consume!(scan::timezone_offset_zulu( s.trim_left(), scan::colon_or_space )); parsed.set_offset(i64::from(offset)).map_err(|e| (s, e))?; } &Internal(InternalFixed { val: InternalInternal::TimezoneOffsetPermissive, }) => { let offset = try_consume!(scan::timezone_offset_permissive( s.trim_left(), scan::colon_or_space )); parsed.set_offset(i64::from(offset)).map_err(|e| (s, e))?; } &RFC2822 => try_consume!(parse_rfc2822(parsed, s)), &RFC3339 => try_consume!(parse_rfc3339(parsed, s)), } } Item::Error => { return Err((s, BAD_FORMAT)); } } } // if there are trailling chars, it is an error if !s.is_empty() { Err((s, TOO_LONG)) } else { Ok(s) } } impl str::FromStr for DateTime { type Err = ParseError; fn from_str(s: &str) -> ParseResult> { const DATE_ITEMS: &'static [Item<'static>] = &[ Item::Numeric(Numeric::Year, Pad::Zero), Item::Space(""), Item::Literal("-"), Item::Numeric(Numeric::Month, Pad::Zero), Item::Space(""), Item::Literal("-"), Item::Numeric(Numeric::Day, Pad::Zero), ]; const TIME_ITEMS: &'static [Item<'static>] = &[ Item::Numeric(Numeric::Hour, Pad::Zero), Item::Space(""), Item::Literal(":"), Item::Numeric(Numeric::Minute, Pad::Zero), Item::Space(""), Item::Literal(":"), Item::Numeric(Numeric::Second, Pad::Zero), Item::Fixed(Fixed::Nanosecond), Item::Space(""), Item::Fixed(Fixed::TimezoneOffsetZ), Item::Space(""), ]; let mut parsed = Parsed::new(); match parse_internal(&mut parsed, s, DATE_ITEMS.iter()) { Err((remainder, e)) if e.0 == ParseErrorKind::TooLong => { if remainder.starts_with('T') || remainder.starts_with(' ') { parse(&mut parsed, &remainder[1..], TIME_ITEMS.iter())?; } else { Err(INVALID)?; } } Err((_s, e)) => Err(e)?, Ok(_) => Err(NOT_ENOUGH)?, }; parsed.to_datetime() } } #[cfg(test)] #[test] fn test_parse() { use super::IMPOSSIBLE; use super::*; // workaround for Rust issue #22255 fn parse_all(s: &str, items: &[Item]) -> ParseResult { let mut parsed = Parsed::new(); parse(&mut parsed, s, items.iter())?; Ok(parsed) } macro_rules! check { ($fmt:expr, $items:expr; $err:tt) => ( assert_eq!(parse_all($fmt, &$items), Err($err)) ); ($fmt:expr, $items:expr; $($k:ident: $v:expr),*) => (#[allow(unused_mut)] { let mut expected = Parsed::new(); $(expected.$k = Some($v);)* assert_eq!(parse_all($fmt, &$items), Ok(expected)) }); } // empty string check!("", []; ); check!(" ", []; TOO_LONG); check!("a", []; TOO_LONG); // whitespaces check!("", [sp!("")]; ); check!(" ", [sp!("")]; ); check!("\t", [sp!("")]; ); check!(" \n\r \n", [sp!("")]; ); check!("a", [sp!("")]; TOO_LONG); // literal check!("", [lit!("a")]; TOO_SHORT); check!(" ", [lit!("a")]; INVALID); check!("a", [lit!("a")]; ); check!("aa", [lit!("a")]; TOO_LONG); check!("A", [lit!("a")]; INVALID); check!("xy", [lit!("xy")]; ); check!("xy", [lit!("x"), lit!("y")]; ); check!("x y", [lit!("x"), lit!("y")]; INVALID); check!("xy", [lit!("x"), sp!(""), lit!("y")]; ); check!("x y", [lit!("x"), sp!(""), lit!("y")]; ); // numeric check!("1987", [num!(Year)]; year: 1987); check!("1987 ", [num!(Year)]; TOO_LONG); check!("0x12", [num!(Year)]; TOO_LONG); // `0` is parsed check!("x123", [num!(Year)]; INVALID); check!("2015", [num!(Year)]; year: 2015); check!("0000", [num!(Year)]; year: 0); check!("9999", [num!(Year)]; year: 9999); check!(" \t987", [num!(Year)]; year: 987); check!("5", [num!(Year)]; year: 5); check!("5\0", [num!(Year)]; TOO_LONG); check!("\05", [num!(Year)]; INVALID); check!("", [num!(Year)]; TOO_SHORT); check!("12345", [num!(Year), lit!("5")]; year: 1234); check!("12345", [nums!(Year), lit!("5")]; year: 1234); check!("12345", [num0!(Year), lit!("5")]; year: 1234); check!("12341234", [num!(Year), num!(Year)]; year: 1234); check!("1234 1234", [num!(Year), num!(Year)]; year: 1234); check!("1234 1235", [num!(Year), num!(Year)]; IMPOSSIBLE); check!("1234 1234", [num!(Year), lit!("x"), num!(Year)]; INVALID); check!("1234x1234", [num!(Year), lit!("x"), num!(Year)]; year: 1234); check!("1234xx1234", [num!(Year), lit!("x"), num!(Year)]; INVALID); check!("1234 x 1234", [num!(Year), lit!("x"), num!(Year)]; INVALID); // signed numeric check!("-42", [num!(Year)]; year: -42); check!("+42", [num!(Year)]; year: 42); check!("-0042", [num!(Year)]; year: -42); check!("+0042", [num!(Year)]; year: 42); check!("-42195", [num!(Year)]; year: -42195); check!("+42195", [num!(Year)]; year: 42195); check!(" -42195", [num!(Year)]; year: -42195); check!(" +42195", [num!(Year)]; year: 42195); check!(" - 42", [num!(Year)]; INVALID); check!(" + 42", [num!(Year)]; INVALID); check!("-", [num!(Year)]; TOO_SHORT); check!("+", [num!(Year)]; TOO_SHORT); // unsigned numeric check!("345", [num!(Ordinal)]; ordinal: 345); check!("+345", [num!(Ordinal)]; INVALID); check!("-345", [num!(Ordinal)]; INVALID); check!(" 345", [num!(Ordinal)]; ordinal: 345); check!(" +345", [num!(Ordinal)]; INVALID); check!(" -345", [num!(Ordinal)]; INVALID); // various numeric fields check!("1234 5678", [num!(Year), num!(IsoYear)]; year: 1234, isoyear: 5678); check!("12 34 56 78", [num!(YearDiv100), num!(YearMod100), num!(IsoYearDiv100), num!(IsoYearMod100)]; year_div_100: 12, year_mod_100: 34, isoyear_div_100: 56, isoyear_mod_100: 78); check!("1 2 3 4 5 6", [num!(Month), num!(Day), num!(WeekFromSun), num!(WeekFromMon), num!(IsoWeek), num!(NumDaysFromSun)]; month: 1, day: 2, week_from_sun: 3, week_from_mon: 4, isoweek: 5, weekday: Weekday::Sat); check!("7 89 01", [num!(WeekdayFromMon), num!(Ordinal), num!(Hour12)]; weekday: Weekday::Sun, ordinal: 89, hour_mod_12: 1); check!("23 45 6 78901234 567890123", [num!(Hour), num!(Minute), num!(Second), num!(Nanosecond), num!(Timestamp)]; hour_div_12: 1, hour_mod_12: 11, minute: 45, second: 6, nanosecond: 78_901_234, timestamp: 567_890_123); // fixed: month and weekday names check!("apr", [fix!(ShortMonthName)]; month: 4); check!("Apr", [fix!(ShortMonthName)]; month: 4); check!("APR", [fix!(ShortMonthName)]; month: 4); check!("ApR", [fix!(ShortMonthName)]; month: 4); check!("April", [fix!(ShortMonthName)]; TOO_LONG); // `Apr` is parsed check!("A", [fix!(ShortMonthName)]; TOO_SHORT); check!("Sol", [fix!(ShortMonthName)]; INVALID); check!("Apr", [fix!(LongMonthName)]; month: 4); check!("Apri", [fix!(LongMonthName)]; TOO_LONG); // `Apr` is parsed check!("April", [fix!(LongMonthName)]; month: 4); check!("Aprill", [fix!(LongMonthName)]; TOO_LONG); check!("Aprill", [fix!(LongMonthName), lit!("l")]; month: 4); check!("Aprl", [fix!(LongMonthName), lit!("l")]; month: 4); check!("April", [fix!(LongMonthName), lit!("il")]; TOO_SHORT); // do not backtrack check!("thu", [fix!(ShortWeekdayName)]; weekday: Weekday::Thu); check!("Thu", [fix!(ShortWeekdayName)]; weekday: Weekday::Thu); check!("THU", [fix!(ShortWeekdayName)]; weekday: Weekday::Thu); check!("tHu", [fix!(ShortWeekdayName)]; weekday: Weekday::Thu); check!("Thursday", [fix!(ShortWeekdayName)]; TOO_LONG); // `Thu` is parsed check!("T", [fix!(ShortWeekdayName)]; TOO_SHORT); check!("The", [fix!(ShortWeekdayName)]; INVALID); check!("Nop", [fix!(ShortWeekdayName)]; INVALID); check!("Thu", [fix!(LongWeekdayName)]; weekday: Weekday::Thu); check!("Thur", [fix!(LongWeekdayName)]; TOO_LONG); // `Thu` is parsed check!("Thurs", [fix!(LongWeekdayName)]; TOO_LONG); // ditto check!("Thursday", [fix!(LongWeekdayName)]; weekday: Weekday::Thu); check!("Thursdays", [fix!(LongWeekdayName)]; TOO_LONG); check!("Thursdays", [fix!(LongWeekdayName), lit!("s")]; weekday: Weekday::Thu); check!("Thus", [fix!(LongWeekdayName), lit!("s")]; weekday: Weekday::Thu); check!("Thursday", [fix!(LongWeekdayName), lit!("rsday")]; TOO_SHORT); // do not backtrack // fixed: am/pm check!("am", [fix!(LowerAmPm)]; hour_div_12: 0); check!("pm", [fix!(LowerAmPm)]; hour_div_12: 1); check!("AM", [fix!(LowerAmPm)]; hour_div_12: 0); check!("PM", [fix!(LowerAmPm)]; hour_div_12: 1); check!("am", [fix!(UpperAmPm)]; hour_div_12: 0); check!("pm", [fix!(UpperAmPm)]; hour_div_12: 1); check!("AM", [fix!(UpperAmPm)]; hour_div_12: 0); check!("PM", [fix!(UpperAmPm)]; hour_div_12: 1); check!("Am", [fix!(LowerAmPm)]; hour_div_12: 0); check!(" Am", [fix!(LowerAmPm)]; INVALID); check!("ame", [fix!(LowerAmPm)]; TOO_LONG); // `am` is parsed check!("a", [fix!(LowerAmPm)]; TOO_SHORT); check!("p", [fix!(LowerAmPm)]; TOO_SHORT); check!("x", [fix!(LowerAmPm)]; TOO_SHORT); check!("xx", [fix!(LowerAmPm)]; INVALID); check!("", [fix!(LowerAmPm)]; TOO_SHORT); // fixed: dot plus nanoseconds check!("", [fix!(Nanosecond)]; ); // no field set, but not an error check!("4", [fix!(Nanosecond)]; TOO_LONG); // never consumes `4` check!("4", [fix!(Nanosecond), num!(Second)]; second: 4); check!(".0", [fix!(Nanosecond)]; nanosecond: 0); check!(".4", [fix!(Nanosecond)]; nanosecond: 400_000_000); check!(".42", [fix!(Nanosecond)]; nanosecond: 420_000_000); check!(".421", [fix!(Nanosecond)]; nanosecond: 421_000_000); check!(".42195", [fix!(Nanosecond)]; nanosecond: 421_950_000); check!(".421950803", [fix!(Nanosecond)]; nanosecond: 421_950_803); check!(".421950803547", [fix!(Nanosecond)]; nanosecond: 421_950_803); check!(".000000003547", [fix!(Nanosecond)]; nanosecond: 3); check!(".000000000547", [fix!(Nanosecond)]; nanosecond: 0); check!(".", [fix!(Nanosecond)]; TOO_SHORT); check!(".4x", [fix!(Nanosecond)]; TOO_LONG); check!(". 4", [fix!(Nanosecond)]; INVALID); check!(" .4", [fix!(Nanosecond)]; TOO_LONG); // no automatic trimming // fixed: nanoseconds without the dot check!("", [internal_fix!(Nanosecond3NoDot)]; TOO_SHORT); check!("0", [internal_fix!(Nanosecond3NoDot)]; TOO_SHORT); check!("4", [internal_fix!(Nanosecond3NoDot)]; TOO_SHORT); check!("42", [internal_fix!(Nanosecond3NoDot)]; TOO_SHORT); check!("421", [internal_fix!(Nanosecond3NoDot)]; nanosecond: 421_000_000); check!("42143", [internal_fix!(Nanosecond3NoDot), num!(Second)]; nanosecond: 421_000_000, second: 43); check!("42195", [internal_fix!(Nanosecond3NoDot)]; TOO_LONG); check!("4x", [internal_fix!(Nanosecond3NoDot)]; TOO_SHORT); check!(" 4", [internal_fix!(Nanosecond3NoDot)]; INVALID); check!(".421", [internal_fix!(Nanosecond3NoDot)]; INVALID); check!("", [internal_fix!(Nanosecond6NoDot)]; TOO_SHORT); check!("0", [internal_fix!(Nanosecond6NoDot)]; TOO_SHORT); check!("42195", [internal_fix!(Nanosecond6NoDot)]; TOO_SHORT); check!("421950", [internal_fix!(Nanosecond6NoDot)]; nanosecond: 421_950_000); check!("000003", [internal_fix!(Nanosecond6NoDot)]; nanosecond: 3000); check!("000000", [internal_fix!(Nanosecond6NoDot)]; nanosecond: 0); check!("4x", [internal_fix!(Nanosecond6NoDot)]; TOO_SHORT); check!(" 4", [internal_fix!(Nanosecond6NoDot)]; INVALID); check!(".42100", [internal_fix!(Nanosecond6NoDot)]; INVALID); check!("", [internal_fix!(Nanosecond9NoDot)]; TOO_SHORT); check!("42195", [internal_fix!(Nanosecond9NoDot)]; TOO_SHORT); check!("421950803", [internal_fix!(Nanosecond9NoDot)]; nanosecond: 421_950_803); check!("000000003", [internal_fix!(Nanosecond9NoDot)]; nanosecond: 3); check!("42195080354", [internal_fix!(Nanosecond9NoDot), num!(Second)]; nanosecond: 421_950_803, second: 54); // don't skip digits that come after the 9 check!("421950803547", [internal_fix!(Nanosecond9NoDot)]; TOO_LONG); check!("000000000", [internal_fix!(Nanosecond9NoDot)]; nanosecond: 0); check!("00000000x", [internal_fix!(Nanosecond9NoDot)]; INVALID); check!(" 4", [internal_fix!(Nanosecond9NoDot)]; INVALID); check!(".42100000", [internal_fix!(Nanosecond9NoDot)]; INVALID); // fixed: timezone offsets check!("+00:00", [fix!(TimezoneOffset)]; offset: 0); check!("-00:00", [fix!(TimezoneOffset)]; offset: 0); check!("+00:01", [fix!(TimezoneOffset)]; offset: 60); check!("-00:01", [fix!(TimezoneOffset)]; offset: -60); check!("+00:30", [fix!(TimezoneOffset)]; offset: 30 * 60); check!("-00:30", [fix!(TimezoneOffset)]; offset: -30 * 60); check!("+04:56", [fix!(TimezoneOffset)]; offset: 296 * 60); check!("-04:56", [fix!(TimezoneOffset)]; offset: -296 * 60); check!("+24:00", [fix!(TimezoneOffset)]; offset: 24 * 60 * 60); check!("-24:00", [fix!(TimezoneOffset)]; offset: -24 * 60 * 60); check!("+99:59", [fix!(TimezoneOffset)]; offset: (100 * 60 - 1) * 60); check!("-99:59", [fix!(TimezoneOffset)]; offset: -(100 * 60 - 1) * 60); check!("+00:59", [fix!(TimezoneOffset)]; offset: 59 * 60); check!("+00:60", [fix!(TimezoneOffset)]; OUT_OF_RANGE); check!("+00:99", [fix!(TimezoneOffset)]; OUT_OF_RANGE); check!("#12:34", [fix!(TimezoneOffset)]; INVALID); check!("12:34", [fix!(TimezoneOffset)]; INVALID); check!("+12:34 ", [fix!(TimezoneOffset)]; TOO_LONG); check!(" +12:34", [fix!(TimezoneOffset)]; offset: 754 * 60); check!("\t -12:34", [fix!(TimezoneOffset)]; offset: -754 * 60); check!("", [fix!(TimezoneOffset)]; TOO_SHORT); check!("+", [fix!(TimezoneOffset)]; TOO_SHORT); check!("+1", [fix!(TimezoneOffset)]; TOO_SHORT); check!("+12", [fix!(TimezoneOffset)]; TOO_SHORT); check!("+123", [fix!(TimezoneOffset)]; TOO_SHORT); check!("+1234", [fix!(TimezoneOffset)]; offset: 754 * 60); check!("+12345", [fix!(TimezoneOffset)]; TOO_LONG); check!("+12345", [fix!(TimezoneOffset), num!(Day)]; offset: 754 * 60, day: 5); check!("Z", [fix!(TimezoneOffset)]; INVALID); check!("z", [fix!(TimezoneOffset)]; INVALID); check!("Z", [fix!(TimezoneOffsetZ)]; offset: 0); check!("z", [fix!(TimezoneOffsetZ)]; offset: 0); check!("Y", [fix!(TimezoneOffsetZ)]; INVALID); check!("Zulu", [fix!(TimezoneOffsetZ), lit!("ulu")]; offset: 0); check!("zulu", [fix!(TimezoneOffsetZ), lit!("ulu")]; offset: 0); check!("+1234ulu", [fix!(TimezoneOffsetZ), lit!("ulu")]; offset: 754 * 60); check!("+12:34ulu", [fix!(TimezoneOffsetZ), lit!("ulu")]; offset: 754 * 60); check!("Z", [internal_fix!(TimezoneOffsetPermissive)]; offset: 0); check!("z", [internal_fix!(TimezoneOffsetPermissive)]; offset: 0); check!("+12:00", [internal_fix!(TimezoneOffsetPermissive)]; offset: 12 * 60 * 60); check!("+12", [internal_fix!(TimezoneOffsetPermissive)]; offset: 12 * 60 * 60); check!("CEST 5", [fix!(TimezoneName), lit!(" "), num!(Day)]; day: 5); // some practical examples check!("2015-02-04T14:37:05+09:00", [num!(Year), lit!("-"), num!(Month), lit!("-"), num!(Day), lit!("T"), num!(Hour), lit!(":"), num!(Minute), lit!(":"), num!(Second), fix!(TimezoneOffset)]; year: 2015, month: 2, day: 4, hour_div_12: 1, hour_mod_12: 2, minute: 37, second: 5, offset: 32400); check!("20150204143705567", [num!(Year), num!(Month), num!(Day), num!(Hour), num!(Minute), num!(Second), internal_fix!(Nanosecond3NoDot)]; year: 2015, month: 2, day: 4, hour_div_12: 1, hour_mod_12: 2, minute: 37, second: 5, nanosecond: 567000000); check!("Mon, 10 Jun 2013 09:32:37 GMT", [fix!(ShortWeekdayName), lit!(","), sp!(" "), num!(Day), sp!(" "), fix!(ShortMonthName), sp!(" "), num!(Year), sp!(" "), num!(Hour), lit!(":"), num!(Minute), lit!(":"), num!(Second), sp!(" "), lit!("GMT")]; year: 2013, month: 6, day: 10, weekday: Weekday::Mon, hour_div_12: 0, hour_mod_12: 9, minute: 32, second: 37); check!("Sun Aug 02 13:39:15 CEST 2020", [fix!(ShortWeekdayName), sp!(" "), fix!(ShortMonthName), sp!(" "), num!(Day), sp!(" "), num!(Hour), lit!(":"), num!(Minute), lit!(":"), num!(Second), sp!(" "), fix!(TimezoneName), sp!(" "), num!(Year)]; year: 2020, month: 8, day: 2, weekday: Weekday::Sun, hour_div_12: 1, hour_mod_12: 1, minute: 39, second: 15); check!("20060102150405", [num!(Year), num!(Month), num!(Day), num!(Hour), num!(Minute), num!(Second)]; year: 2006, month: 1, day: 2, hour_div_12: 1, hour_mod_12: 3, minute: 4, second: 5); check!("3:14PM", [num!(Hour12), lit!(":"), num!(Minute), fix!(LowerAmPm)]; hour_div_12: 1, hour_mod_12: 3, minute: 14); check!("12345678901234.56789", [num!(Timestamp), lit!("."), num!(Nanosecond)]; nanosecond: 56_789, timestamp: 12_345_678_901_234); check!("12345678901234.56789", [num!(Timestamp), fix!(Nanosecond)]; nanosecond: 567_890_000, timestamp: 12_345_678_901_234); } #[cfg(test)] #[test] fn test_rfc2822() { use super::NOT_ENOUGH; use super::*; use offset::FixedOffset; use DateTime; // Test data - (input, Ok(expected result after parse and format) or Err(error code)) let testdates = [ ("Tue, 20 Jan 2015 17:35:20 -0800", Ok("Tue, 20 Jan 2015 17:35:20 -0800")), // normal case ("Fri, 2 Jan 2015 17:35:20 -0800", Ok("Fri, 02 Jan 2015 17:35:20 -0800")), // folding whitespace ("Fri, 02 Jan 2015 17:35:20 -0800", Ok("Fri, 02 Jan 2015 17:35:20 -0800")), // leading zero ("20 Jan 2015 17:35:20 -0800", Ok("Tue, 20 Jan 2015 17:35:20 -0800")), // no day of week ("20 JAN 2015 17:35:20 -0800", Ok("Tue, 20 Jan 2015 17:35:20 -0800")), // upper case month ("Tue, 20 Jan 2015 17:35 -0800", Ok("Tue, 20 Jan 2015 17:35:00 -0800")), // no second ("11 Sep 2001 09:45:00 EST", Ok("Tue, 11 Sep 2001 09:45:00 -0500")), ("30 Feb 2015 17:35:20 -0800", Err(OUT_OF_RANGE)), // bad day of month ("Tue, 20 Jan 2015", Err(TOO_SHORT)), // omitted fields ("Tue, 20 Avr 2015 17:35:20 -0800", Err(INVALID)), // bad month name ("Tue, 20 Jan 2015 25:35:20 -0800", Err(OUT_OF_RANGE)), // bad hour ("Tue, 20 Jan 2015 7:35:20 -0800", Err(INVALID)), // bad # of digits in hour ("Tue, 20 Jan 2015 17:65:20 -0800", Err(OUT_OF_RANGE)), // bad minute ("Tue, 20 Jan 2015 17:35:90 -0800", Err(OUT_OF_RANGE)), // bad second ("Tue, 20 Jan 2015 17:35:20 -0890", Err(OUT_OF_RANGE)), // bad offset ("6 Jun 1944 04:00:00Z", Err(INVALID)), // bad offset (zulu not allowed) ("Tue, 20 Jan 2015 17:35:20 HAS", Err(NOT_ENOUGH)), // bad named time zone ]; fn rfc2822_to_datetime(date: &str) -> ParseResult> { let mut parsed = Parsed::new(); parse(&mut parsed, date, [Item::Fixed(Fixed::RFC2822)].iter())?; parsed.to_datetime() } fn fmt_rfc2822_datetime(dt: DateTime) -> String { dt.format_with_items([Item::Fixed(Fixed::RFC2822)].iter()).to_string() } // Test against test data above for &(date, checkdate) in testdates.iter() { let d = rfc2822_to_datetime(date); // parse a date let dt = match d { // did we get a value? Ok(dt) => Ok(fmt_rfc2822_datetime(dt)), // yes, go on Err(e) => Err(e), // otherwise keep an error for the comparison }; if dt != checkdate.map(|s| s.to_string()) { // check for expected result panic!( "Date conversion failed for {}\nReceived: {:?}\nExpected: {:?}", date, dt, checkdate ); } } } #[cfg(test)] #[test] fn parse_rfc850() { use {TimeZone, Utc}; static RFC850_FMT: &'static str = "%A, %d-%b-%y %T GMT"; let dt_str = "Sunday, 06-Nov-94 08:49:37 GMT"; let dt = Utc.ymd(1994, 11, 6).and_hms(8, 49, 37); // Check that the format is what we expect assert_eq!(dt.format(RFC850_FMT).to_string(), dt_str); // Check that it parses correctly assert_eq!(Ok(dt), Utc.datetime_from_str("Sunday, 06-Nov-94 08:49:37 GMT", RFC850_FMT)); // Check that the rest of the weekdays parse correctly (this test originally failed because // Sunday parsed incorrectly). let testdates = [ (Utc.ymd(1994, 11, 7).and_hms(8, 49, 37), "Monday, 07-Nov-94 08:49:37 GMT"), (Utc.ymd(1994, 11, 8).and_hms(8, 49, 37), "Tuesday, 08-Nov-94 08:49:37 GMT"), (Utc.ymd(1994, 11, 9).and_hms(8, 49, 37), "Wednesday, 09-Nov-94 08:49:37 GMT"), (Utc.ymd(1994, 11, 10).and_hms(8, 49, 37), "Thursday, 10-Nov-94 08:49:37 GMT"), (Utc.ymd(1994, 11, 11).and_hms(8, 49, 37), "Friday, 11-Nov-94 08:49:37 GMT"), (Utc.ymd(1994, 11, 12).and_hms(8, 49, 37), "Saturday, 12-Nov-94 08:49:37 GMT"), ]; for val in &testdates { assert_eq!(Ok(val.0), Utc.datetime_from_str(val.1, RFC850_FMT)); } } #[cfg(test)] #[test] fn test_rfc3339() { use super::*; use offset::FixedOffset; use DateTime; // Test data - (input, Ok(expected result after parse and format) or Err(error code)) let testdates = [ ("2015-01-20T17:35:20-08:00", Ok("2015-01-20T17:35:20-08:00")), // normal case ("1944-06-06T04:04:00Z", Ok("1944-06-06T04:04:00+00:00")), // D-day ("2001-09-11T09:45:00-08:00", Ok("2001-09-11T09:45:00-08:00")), ("2015-01-20T17:35:20.001-08:00", Ok("2015-01-20T17:35:20.001-08:00")), ("2015-01-20T17:35:20.000031-08:00", Ok("2015-01-20T17:35:20.000031-08:00")), ("2015-01-20T17:35:20.000000004-08:00", Ok("2015-01-20T17:35:20.000000004-08:00")), ("2015-01-20T17:35:20.000000000452-08:00", Ok("2015-01-20T17:35:20-08:00")), // too small ("2015-02-30T17:35:20-08:00", Err(OUT_OF_RANGE)), // bad day of month ("2015-01-20T25:35:20-08:00", Err(OUT_OF_RANGE)), // bad hour ("2015-01-20T17:65:20-08:00", Err(OUT_OF_RANGE)), // bad minute ("2015-01-20T17:35:90-08:00", Err(OUT_OF_RANGE)), // bad second ("2015-01-20T17:35:20-24:00", Err(OUT_OF_RANGE)), // bad offset ]; fn rfc3339_to_datetime(date: &str) -> ParseResult> { let mut parsed = Parsed::new(); parse(&mut parsed, date, [Item::Fixed(Fixed::RFC3339)].iter())?; parsed.to_datetime() } fn fmt_rfc3339_datetime(dt: DateTime) -> String { dt.format_with_items([Item::Fixed(Fixed::RFC3339)].iter()).to_string() } // Test against test data above for &(date, checkdate) in testdates.iter() { let d = rfc3339_to_datetime(date); // parse a date let dt = match d { // did we get a value? Ok(dt) => Ok(fmt_rfc3339_datetime(dt)), // yes, go on Err(e) => Err(e), // otherwise keep an error for the comparison }; if dt != checkdate.map(|s| s.to_string()) { // check for expected result panic!( "Date conversion failed for {}\nReceived: {:?}\nExpected: {:?}", date, dt, checkdate ); } } }