pub fn parse_secs(input: &str) -> Result<u64, Error> {
    #[derive(Default)]
    struct Buf(Vec<char>);
    impl Buf {
        fn is_empty(&self) -> bool {
            self.0.is_empty()
        }
        fn append(&mut self, ch: char) {
            self.0.push(ch)
        }
        fn parse(&mut self, magnitude: Magnitude) -> Option<u64> {
            if self.is_empty() {
                return None;
            }

            Some(
                self.0
                    .drain(..)
                    .filter_map(|c| c.to_digit(10).map(u64::from))
                    .fold(0, |a, c| 10 * a + c)
                    * magnitude.to_secs(),
            )
        }
    }

    #[derive(Default)]
    struct Order(Option<Magnitude>);
    impl Order {
        fn verify(&mut self, magnitude: Magnitude) -> Result<Magnitude, Error> {
            match self.0 {
                Some(a) if a > magnitude => self.0.replace(magnitude),
                Some(a) if a == magnitude => return Err(Error::AlreadySeen),
                None => self.0.replace(magnitude),
                _ => return Err(Error::OutOfOrder),
            };
            Ok(magnitude)
        }
    }

    #[derive(Copy, Clone, PartialEq, PartialOrd)]
    enum Magnitude {
        Second,
        Minute,
        Hour,
        Day,
    }
    impl Magnitude {
        fn to_secs(self) -> u64 {
            match self {
                Self::Second => 1,
                Self::Minute => 60,
                Self::Hour => 60 * 60,
                Self::Day => 60 * 60 * 24,
            }
        }
    }

    let (mut order, mut buf): (Order, Buf) = Default::default();
    let mut iter = input.chars().peekable();
    let mut acc = 0;

    macro_rules! verify {
        ($mag:expr) => {{
            if buf.is_empty() {
                return Err(Error::InvalidData);
            }
            match buf.parse(order.verify($mag)?) {
                Some(d) => d,
                None => break,
            }
        }};
    }

    while let Some(left) = iter.next() {
        acc += match (left, iter.peek()) {
            ('s', ..) => verify!(Magnitude::Second),
            ('m', ..) => verify!(Magnitude::Minute),
            ('h', ..) => verify!(Magnitude::Hour),
            ('d', ..) => verify!(Magnitude::Day),
            (c, Some(..)) if c.is_ascii_digit() => {
                if buf.is_empty() && c == '0' {
                    return Err(Error::InvalidData);
                }
                buf.append(c);
                continue;
            }
            (c, None) if c.is_ascii_digit() => return Err(Error::InvalidData),
            _ => continue,
        }
    }

    return Ok(acc);
}
/// Parse the input string into seconds
///
/// # Format:
/// | suffix | description |
/// | -- | -- |
/// | d | days |
/// | h | hours |
/// | m | minutes |
/// | s | seconds |
///
/// ```rust
/// let tests = &[
///     ("1s", 1),
///     ("1m", 60),
///     ("1h", 60 * 60),
///     ("1h 1m 1s", (60 * 60) + 60 + 1),
///     ("1h 1s", (60 * 60) + 1),
///     ("30m 59s", (30 * 60) + 59),
///     ("7d", (60 * 60 * 24 * 7)),
///     ("3d 5m", (60 * 60 * 24 * 3) + 5 * 60),
///     ("1s foobar", 1),
/// ];
///
/// for (input, expected) in tests {
///     assert_eq!(simple_duration_parse::parse_secs(&input).unwrap(), *expected);
/// }
/// ```
Parse the input string into seconds
Parse the input string into seconds
pub fn parse_secs(input: &str) -> Result<u64, Error> {
    #[derive(Default)]
    struct Buf(Vec<char>);
    impl Buf {
        fn is_empty(&self) -> bool {
            self.0.is_empty()
        }
        fn append(&mut self, ch: char) {
            self.0.push(ch)
        }
        fn parse(&mut self, magnitude: Magnitude) -> Option<u64> {
            if self.is_empty() {
                return None;
            }
            Some(
                self.0
                    .drain(..)
                    .filter_map(|c| c.to_digit(10).map(u64::from))
                    .fold(0, |a, c| 10 * a + c)
                    * magnitude.to_secs(),
            )
        }
    }
    #[derive(Default)]
    struct Order(Option<Magnitude>);
    impl Order {
        fn verify(&mut self, magnitude: Magnitude) -> Result<Magnitude, Error> {
            match self.0 {
                Some(a) if a > magnitude => self.0.replace(magnitude),
                Some(a) if a == magnitude => return Err(Error::AlreadySeen),
                None => self.0.replace(magnitude),
                _ => return Err(Error::OutOfOrder),
            };
            Ok(magnitude)
        }
    }
    #[derive(Copy, Clone, PartialEq, PartialOrd)]
    enum Magnitude {
        Second,
        Minute,
        Hour,
        Day,
    }
    impl Magnitude {
        fn to_secs(self) -> u64 {
            match self {
                Self::Second => 1,
                Self::Minute => 60,
                Self::Hour => 60 * 60,
                Self::Day => 60 * 60 * 24,
            }
        }
    }
    let (mut order, mut buf): (Order, Buf) = Default::default();
    let mut iter = input.chars().peekable();
    let mut acc = 0;
    macro_rules! verify {
        ($mag:expr) => {{
            if buf.is_empty() {
                return Err(Error::InvalidData);
            }
            match buf.parse(order.verify($mag)?) {
                Some(d) => d,
                None => break,
            }
        }};
    }
    while let Some(left) = iter.next() {
        acc += match (left, iter.peek()) {
            ('s', ..) => verify!(Magnitude::Second),
            ('m', ..) => verify!(Magnitude::Minute),
            ('h', ..) => verify!(Magnitude::Hour),
            ('d', ..) => verify!(Magnitude::Day),
            (c, Some(..)) if c.is_ascii_digit() => {
                if buf.is_empty() && c == '0' {
                    return Err(Error::InvalidData);
                }
                buf.append(c);
                continue;
            }
            (c, None) if c.is_ascii_digit() => return Err(Error::InvalidData),
            _ => continue,
        }
    }
    return Ok(acc);
}
pub fn parse_secs ( input : & str ) -> Result < u64 , Error > { # [ derive ( Default ) ] struct Buf ( Vec < char > ) ; impl Buf { fn is_empty ( & self ) -> bool { self . 0 . is_empty ( ) } fn append ( & mut self , ch : char ) { self . 0 . push ( ch ) } fn parse ( & mut self , magnitude : Magnitude ) -> Option < u64 > { if self . is_empty ( ) { return None ; } Some ( self . 0 . drain ( .. ) . filter_map ( | c | c . to_digit ( 10 ) . map ( u64 :: from ) ) . fold ( 0 , | a , c | 10 * a + c ) * magnitude . to_secs ( ) , ) } } # [ derive ( Default ) ] struct Order ( Option < Magnitude > ) ; impl Order { fn verify ( & mut self , magnitude : Magnitude ) -> Result < Magnitude , Error > { match self . 0 { Some ( a ) if a > magnitude => self . 0 . replace ( magnitude ) , Some ( a ) if a == magnitude => return Err ( Error :: AlreadySeen ) , None => self . 0 . replace ( magnitude ) , _ => return Err ( Error :: OutOfOrder ) , } ; Ok ( magnitude ) } } # [ derive ( Copy Clone PartialEq PartialOrd ) ] enum Magnitude { Second , Minute , Hour , Day , } impl Magnitude { fn to_secs ( self ) -> u64 { match self { Self :: Second => 1 , Self :: Minute => 60 , Self :: Hour => 60 * 60 , Self :: Day => 60 * 60 * 24 , } } } let ( mut order , mut buf ) : ( Order , Buf ) = Default :: default ( ) ; let mut iter = input . chars ( ) . peekable ( ) ; let mut acc = 0 ; macro_rules! verify { ( $mag : expr ) => { { if buf is_empty ( ) { return Err ( Error InvalidData ) } match buf parse ( order verify ( $mag ) ) { Some ( d ) d None break } } } ; } while let Some ( left ) = iter . next ( ) { acc += match ( left , iter . peek ( ) ) { ( 's' , .. ) => verify ! ( Magnitude Second ) , ( 'm' , .. ) => verify ! ( Magnitude Minute ) , ( 'h' , .. ) => verify ! ( Magnitude Hour ) , ( 'd' , .. ) => verify ! ( Magnitude Day ) , ( c , Some ( .. ) ) if c . is_ascii_digit ( ) => { if buf . is_empty ( ) && c == '0' { return Err ( Error :: InvalidData ) ; } buf . append ( c ) ; continue ; } ( c , None ) if c . is_ascii_digit ( ) => return Err ( Error :: InvalidData ) , _ => continue , } } return Ok ( acc ) ; }
Parse the input string into seconds
Parse the input string into seconds
input
&str
input
&str
format:
| suffix | description |
| -- | -- |
| d | days |
| h | hours |
| m | minutes |
| s | seconds |



for (input, expected) in tests {
assert_eq!(simple_duration_parse::parse_secs(&input).unwrap(), *expected);
}
```
| suffix | description | | -- | -- | | d | days | | h | hours | | m | minutes | | s | seconds | for ( input expected ) in tests { assert_eq! ( simple_duration_parse :: parse_secs ( &input ) . unwrap () * expected ) ; } ` ` `