| // 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. |
| |
| use std::usize; |
| |
| use Weekday; |
| |
| use super::scan; |
| use super::{Parsed, ParseResult, Item, InternalFixed, InternalInternal}; |
| use super::{OUT_OF_RANGE, INVALID, TOO_SHORT, TOO_LONG, BAD_FORMAT}; |
| |
| 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 { |
| ($e:expr) => ({ let (s_, v) = try!($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 to +0000 |
| // "EST" / "CST" / "MST" / "PST" / ; same to -0500 to -0800 |
| // "EDT" / "CDT" / "MDT" / "PDT" / ; same to -0400 to -0700 |
| // 1*(%d65-90 / %d97-122) ; same to -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. |
| // |
| // - zone of `-0000` and any unrecognized legacy time zones (including |
| // *every* one-letter military time zones) are considered "missing", |
| // in such that we don't actually know what time zone is being used. |
| // |
| // - 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..]; |
| try!(parsed.set_weekday(weekday)); |
| } |
| |
| s = s.trim_left(); |
| try!(parsed.set_day(try_consume!(scan::number(s, 1, 2)))); |
| s = try!(scan::space(s)); // mandatory |
| try!(parsed.set_month(1 + i64::from(try_consume!(scan::short_month0(s))))); |
| s = try!(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 |
| } |
| try!(parsed.set_year(year)); |
| |
| s = try!(scan::space(s)); // mandatory |
| try!(parsed.set_hour(try_consume!(scan::number(s, 2, 2)))); |
| s = try!(scan::char(s.trim_left(), b':')).trim_left(); // *S ":" *S |
| try!(parsed.set_minute(try_consume!(scan::number(s, 2, 2)))); |
| if let Ok(s_) = scan::char(s.trim_left(), b':') { // [ ":" *S 2DIGIT ] |
| try!(parsed.set_second(try_consume!(scan::number(s_, 2, 2)))); |
| } |
| |
| s = try!(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`) |
| try!(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 { |
| ($e:expr) => ({ let (s_, v) = try!($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. |
| |
| try!(parsed.set_year(try_consume!(scan::number(s, 4, 4)))); |
| s = try!(scan::char(s, b'-')); |
| try!(parsed.set_month(try_consume!(scan::number(s, 2, 2)))); |
| s = try!(scan::char(s, b'-')); |
| try!(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), |
| }; |
| |
| try!(parsed.set_hour(try_consume!(scan::number(s, 2, 2)))); |
| s = try!(scan::char(s, b':')); |
| try!(parsed.set_minute(try_consume!(scan::number(s, 2, 2)))); |
| s = try!(scan::char(s, b':')); |
| try!(parsed.set_second(try_consume!(scan::number(s, 2, 2)))); |
| if s.starts_with('.') { |
| let nanosecond = try_consume!(scan::nanosecond(&s[1..])); |
| try!(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); } |
| try!(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>(parsed: &mut Parsed, mut s: &str, items: I) -> ParseResult<()> |
| where I: Iterator<Item=Item<'a>> { |
| macro_rules! try_consume { |
| ($e:expr) => ({ let (s_, v) = try!($e); s = s_; v }) |
| } |
| |
| for item in items { |
| match item { |
| Item::Literal(prefix) => { |
| if s.len() < prefix.len() { return Err(TOO_SHORT); } |
| if !s.starts_with(prefix) { return Err(INVALID); } |
| s = &s[prefix.len()..]; |
| } |
| |
| Item::OwnedLiteral(ref prefix) => { |
| if s.len() < prefix.len() { return Err(TOO_SHORT); } |
| if !s.starts_with(&prefix[..]) { return Err(INVALID); } |
| s = &s[prefix.len()..]; |
| } |
| |
| Item::Space(_) | Item::OwnedSpace(_) => { |
| s = s.trim_left(); |
| } |
| |
| Item::Numeric(spec, _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)); |
| try!(0i64.checked_sub(v).ok_or(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)) |
| }; |
| try!(set(parsed, v)); |
| } |
| |
| Item::Fixed(spec) => { |
| use super::Fixed::*; |
| |
| match spec { |
| ShortMonthName => { |
| let month0 = try_consume!(scan::short_month0(s)); |
| try!(parsed.set_month(i64::from(month0) + 1)); |
| } |
| |
| LongMonthName => { |
| let month0 = try_consume!(scan::short_or_long_month0(s)); |
| try!(parsed.set_month(i64::from(month0) + 1)); |
| } |
| |
| ShortWeekdayName => { |
| let weekday = try_consume!(scan::short_weekday(s)); |
| try!(parsed.set_weekday(weekday)); |
| } |
| |
| LongWeekdayName => { |
| let weekday = try_consume!(scan::short_or_long_weekday(s)); |
| try!(parsed.set_weekday(weekday)); |
| } |
| |
| LowerAmPm | UpperAmPm => { |
| if s.len() < 2 { return Err(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(INVALID) |
| }; |
| try!(parsed.set_ampm(ampm)); |
| s = &s[2..]; |
| } |
| |
| Nanosecond | Nanosecond3 | Nanosecond6 | Nanosecond9 => { |
| if s.starts_with('.') { |
| let nano = try_consume!(scan::nanosecond(&s[1..])); |
| try!(parsed.set_nanosecond(nano)); |
| } |
| } |
| |
| Internal(InternalFixed { val: InternalInternal::Nanosecond3NoDot }) => { |
| if s.len() < 3 { return Err(TOO_SHORT); } |
| let nano = try_consume!(scan::nanosecond_fixed(s, 3)); |
| try!(parsed.set_nanosecond(nano)); |
| } |
| |
| Internal(InternalFixed { val: InternalInternal::Nanosecond6NoDot }) => { |
| if s.len() < 6 { return Err(TOO_SHORT); } |
| let nano = try_consume!(scan::nanosecond_fixed(s, 6)); |
| try!(parsed.set_nanosecond(nano)); |
| } |
| |
| Internal(InternalFixed { val: InternalInternal::Nanosecond9NoDot }) => { |
| if s.len() < 9 { return Err(TOO_SHORT); } |
| let nano = try_consume!(scan::nanosecond_fixed(s, 9)); |
| try!(parsed.set_nanosecond(nano)); |
| } |
| |
| TimezoneName => return Err(BAD_FORMAT), |
| |
| TimezoneOffsetColon | TimezoneOffset => { |
| let offset = try_consume!(scan::timezone_offset(s.trim_left(), |
| scan::colon_or_space)); |
| try!(parsed.set_offset(i64::from(offset))); |
| } |
| |
| TimezoneOffsetColonZ | TimezoneOffsetZ => { |
| let offset = try_consume!(scan::timezone_offset_zulu(s.trim_left(), |
| scan::colon_or_space)); |
| try!(parsed.set_offset(i64::from(offset))); |
| } |
| Internal(InternalFixed { val: InternalInternal::TimezoneOffsetPermissive }) => { |
| let offset = try_consume!(scan::timezone_offset_permissive( |
| s.trim_left(), scan::colon_or_space)); |
| try!(parsed.set_offset(i64::from(offset))); |
| } |
| |
| RFC2822 => try_consume!(parse_rfc2822(parsed, s)), |
| RFC3339 => try_consume!(parse_rfc3339(parsed, s)), |
| } |
| } |
| |
| Item::Error => { |
| return Err(BAD_FORMAT); |
| } |
| } |
| } |
| |
| // if there are trailling chars, it is an error |
| if !s.is_empty() { |
| Err(TOO_LONG) |
| } else { |
| Ok(()) |
| } |
| } |
| |
| #[cfg(test)] |
| #[test] |
| fn test_parse() { |
| use super::*; |
| use super::IMPOSSIBLE; |
| |
| // workaround for Rust issue #22255 |
| fn parse_all(s: &str, items: &[Item]) -> ParseResult<Parsed> { |
| let mut parsed = Parsed::new(); |
| try!(parse(&mut parsed, s, items.iter().cloned())); |
| 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!("???", [fix!(TimezoneName)]; BAD_FORMAT); // not allowed |
| |
| // 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!("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 DateTime; |
| use offset::FixedOffset; |
| use super::*; |
| use super::NOT_ENOUGH; |
| |
| // 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 |
| ("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<DateTime<FixedOffset>> { |
| let mut parsed = Parsed::new(); |
| try!(parse(&mut parsed, date, [Item::Fixed(Fixed::RFC2822)].iter().cloned())); |
| parsed.to_datetime() |
| } |
| |
| fn fmt_rfc2822_datetime(dt: DateTime<FixedOffset>) -> String { |
| dt.format_with_items([Item::Fixed(Fixed::RFC2822)].iter().cloned()).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 ::{Utc, TimeZone}; |
| |
| 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 DateTime; |
| use offset::FixedOffset; |
| use super::*; |
| |
| // 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<DateTime<FixedOffset>> { |
| let mut parsed = Parsed::new(); |
| try!(parse(&mut parsed, date, [Item::Fixed(Fixed::RFC3339)].iter().cloned())); |
| parsed.to_datetime() |
| } |
| |
| fn fmt_rfc3339_datetime(dt: DateTime<FixedOffset>) -> String { |
| dt.format_with_items([Item::Fixed(Fixed::RFC3339)].iter().cloned()).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); |
| } |
| }; |
| } |
| |
