107 lines · 2.9 KB · Rust
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use crate::owned::SPACE;use quick_error::quick_error;use std::{fmt, io}; #[derive(PartialEq, Eq, Debug, Hash, Ord, PartialOrd, Clone, Copy)]#[cfg_attr(feature = "serde1", derive(serde::Serialize, serde::Deserialize))]pub enum Sign {    Plus,    Minus,} #[derive(PartialEq, Eq, Debug, Hash, Ord, PartialOrd, Clone, Copy)]#[cfg_attr(feature = "serde1", derive(serde::Serialize, serde::Deserialize))]pub struct Time {    /// time in seconds from epoch    pub time: u32,    /// time offset in seconds, may be negative to match the sign    pub offset: i32,    /// the sign seen in front of -0000    pub sign: Sign,} impl Time {    pub fn write_to(&self, mut out: impl io::Write) -> io::Result<()> {        itoa::write(&mut out, self.time)?;        out.write_all(SPACE)?;        out.write_all(&[match self.sign {            Sign::Plus => b'+',            Sign::Minus => b'-',        }])?;         const ZERO: &[u8; 1] = b"0";         const SECONDS_PER_HOUR: i32 = 60 * 60;        let offset = self.offset.abs();        let hours = offset / SECONDS_PER_HOUR;        assert!(hours < 25, "offset is more than a day: {}", hours);        let minutes = (offset - (hours * SECONDS_PER_HOUR)) / 60;         if hours < 10 {            out.write_all(ZERO)?;        }        itoa::write(&mut out, hours)?;         if minutes < 10 {            out.write_all(ZERO)?;        }        itoa::write(&mut out, minutes).map(|_| ())    }} pub const SHA1_SIZE: usize = 20; #[derive(PartialEq, Eq, Debug, Hash, Ord, PartialOrd, Clone, Copy)]#[cfg_attr(feature = "serde1", derive(serde::Serialize, serde::Deserialize))]pub enum Kind {    Tree,    Blob,    Commit,    Tag,}quick_error! {    #[derive(Debug)]    pub enum Error {        InvalidObjectKind(kind: crate::BString) {            display("Unknown object kind: {:?}", std::str::from_utf8(&kind))        }    }} impl Kind {    pub fn from_bytes(s: &[u8]) -> Result<Kind, Error> {        Ok(match s {            b"tree" => Kind::Tree,            b"blob" => Kind::Blob,            b"commit" => Kind::Commit,            b"tag" => Kind::Tag,            _ => return Err(Error::InvalidObjectKind(s.into())),        })    }     pub fn to_bytes(&self) -> &[u8] {        match self {            Kind::Tree => b"tree",            Kind::Commit => b"commit",            Kind::Blob => b"blob",            Kind::Tag => b"tag",        }    }} impl fmt::Display for Kind {    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {        f.write_str(std::str::from_utf8(self.to_bytes()).expect("valid utf8 in kind name"))    }} #[derive(Clone, Copy, PartialEq, Eq, Debug, Ord, PartialOrd, Hash)]#[repr(u16)]#[cfg_attr(feature = "serde1", derive(serde::Serialize, serde::Deserialize))]pub enum TreeMode {    Tree = 0o040000u16,    Blob = 0o100644,    BlobExecutable = 0o100755,    Link = 0o120000,    Commit = 0o160000,}