dbf_dextractor 0.1.2

Extract and deserialize dbf files
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use std::fmt;
use std::string::ToString;

use serde::de::{self, SeqAccess, Visitor};
use serde::{Deserialize, Deserializer, Serialize, Serializer};

#[derive(Clone, Debug)]
pub struct Date {
    pub year: u16,
    pub month: u8,
    pub day: u8,
}

impl Date {
    pub fn new(year: u16, month: u8, day: u8) -> Self {
        Self { year, month, day }
    }
}

impl fmt::Display for Date {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "{}-{:02}-{:02}", self.year, self.month, self.day)
    }
}

impl Serialize for Date {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        serializer.serialize_str(&self.to_string())
    }
}

impl<'de> Deserialize<'de> for Date {
    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
    where
        D: Deserializer<'de>,
    {
        struct DateVisitor;

        impl<'de> Visitor<'de> for DateVisitor {
            type Value = Date;

            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
                formatter.write_str("struct Timestamp")
            }

            fn visit_seq<V>(self, mut seq: V) -> Result<Date, V::Error>
            where
                V: SeqAccess<'de>,
            {
                let year = seq
                    .next_element()?
                    .ok_or_else(|| de::Error::invalid_length(0, &self))?;
                let month = seq
                    .next_element()?
                    .ok_or_else(|| de::Error::invalid_length(1, &self))?;
                let day = seq
                    .next_element()?
                    .ok_or_else(|| de::Error::invalid_length(2, &self))?;
                Ok(Date { year, month, day })
            }
        }
        deserializer.deserialize_seq(DateVisitor)
    }
}

#[derive(Clone, Debug)]
pub struct Time {
    pub hour: u8,
    pub minute: u8,
    pub second: u8,
    pub millisecond: u16,
}

impl Time {
    pub fn new(hour: u8, minute: u8, second: u8, millisecond: u16) -> Self {
        Self { hour, minute, second, millisecond }
    }
}

impl fmt::Display for Time {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "{:02}:{:02}:{:02}.{:03}", self.hour, self.minute, self.second, self.millisecond)
    }
}

#[derive(Clone, Debug)]
pub struct Timestamp {
    pub date: Date,
    pub time: Time,
}

impl Timestamp {
    pub(crate) fn new(year: u16, month: u8, day: u8, hour: u8, minute: u8, second: u8, millisecond: u16) -> Self {
        Self {
            date: Date { year, month, day },
            time: Time { hour, minute, second, millisecond },
        }
    }
}

impl fmt::Display for Timestamp {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "{}T{}", self.date, self.time)
    }
}

impl Serialize for Timestamp {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        serializer.serialize_str(&self.to_string())
    }
}

impl<'de> Deserialize<'de> for Timestamp {
    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
    where
        D: Deserializer<'de>,
    {
        struct TimestampVisitor;

        impl<'de> Visitor<'de> for TimestampVisitor {
            type Value = Timestamp;

            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
                formatter.write_str("struct Timestamp")
            }

            fn visit_seq<V>(self, mut seq: V) -> Result<Timestamp, V::Error>
            where
                V: SeqAccess<'de>,
            {
                let year = seq
                    .next_element()?
                    .ok_or_else(|| de::Error::invalid_length(0, &self))?;
                let month = seq
                    .next_element()?
                    .ok_or_else(|| de::Error::invalid_length(1, &self))?;
                let day = seq
                    .next_element()?
                    .ok_or_else(|| de::Error::invalid_length(2, &self))?;
                let hour = seq
                    .next_element()?
                    .ok_or_else(|| de::Error::invalid_length(3, &self))?;
                let minute = seq
                    .next_element()?
                    .ok_or_else(|| de::Error::invalid_length(4, &self))?;
                let second = seq
                    .next_element()?
                    .ok_or_else(|| de::Error::invalid_length(5, &self))?;
                let millisecond = seq
                    .next_element()?
                    .ok_or_else(|| de::Error::invalid_length(6, &self))?;

                Ok(Timestamp::new(year, month, day, hour, minute, second, millisecond))
            }
        }
        deserializer.deserialize_seq(TimestampVisitor)
    }
}