126 lines
3.8 KiB
Rust
126 lines
3.8 KiB
Rust
use std::{
|
|
fmt,
|
|
num::ParseIntError,
|
|
str::{self, FromStr},
|
|
};
|
|
|
|
use thiserror::Error;
|
|
|
|
/// The data for indicating authorship of an action within
|
|
/// [`crate::commit::CommitData`].
|
|
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
|
|
pub struct Author {
|
|
/// Name corresponding to `user.name` in the git config.
|
|
///
|
|
/// Note: this must not contain `<` or `>`.
|
|
pub name: String,
|
|
/// Email corresponding to `user.email` in the git config.
|
|
///
|
|
/// Note: this must not contain `<` or `>`.
|
|
pub email: String,
|
|
/// The time of this author's action.
|
|
pub time: Time,
|
|
}
|
|
|
|
/// The time of a [`Author`]'s action.
|
|
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
|
|
pub struct Time {
|
|
seconds: i64,
|
|
offset: i32,
|
|
}
|
|
|
|
impl Time {
|
|
pub fn new(seconds: i64, offset: i32) -> Self {
|
|
Self { seconds, offset }
|
|
}
|
|
|
|
/// Return the time, in seconds, since the epoch.
|
|
pub fn seconds(&self) -> i64 {
|
|
self.seconds
|
|
}
|
|
|
|
/// Return the timezone offset, in minutes.
|
|
pub fn offset(&self) -> i32 {
|
|
self.offset
|
|
}
|
|
|
|
fn from_components<'a>(cs: &mut impl Iterator<Item = &'a str>) -> Result<Self, ParseError> {
|
|
let offset = match cs.next() {
|
|
None => Err(ParseError::Missing("offset")),
|
|
Some(offset) => Self::parse_offset(offset).map_err(ParseError::Offset),
|
|
}?;
|
|
let time = match cs.next() {
|
|
None => return Err(ParseError::Missing("time")),
|
|
Some(time) => time.parse::<i64>().map_err(ParseError::Time)?,
|
|
};
|
|
Ok(Self::new(time, offset))
|
|
}
|
|
|
|
fn parse_offset(offset: &str) -> Result<i32, ParseIntError> {
|
|
// The offset is in the form of timezone offset,
|
|
// e.g. +0200, -0100. This needs to be converted into
|
|
// minutes. The first two digits in the offset are the
|
|
// number of hours in the offset, while the latter two
|
|
// digits are the number of minutes in the offset.
|
|
let tz_offset = offset.parse::<i32>()?;
|
|
let hours = tz_offset / 100;
|
|
let minutes = tz_offset % 100;
|
|
Ok(hours * 60 + minutes)
|
|
}
|
|
}
|
|
|
|
impl FromStr for Time {
|
|
type Err = ParseError;
|
|
|
|
fn from_str(s: &str) -> Result<Self, Self::Err> {
|
|
Self::from_components(&mut s.split(' ').rev())
|
|
}
|
|
}
|
|
|
|
impl fmt::Display for Time {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
let sign = if self.offset.is_negative() { '-' } else { '+' };
|
|
let hours = self.offset.abs() / 60;
|
|
let minutes = self.offset.abs() % 60;
|
|
write!(f, "{} {}{:0>2}{:0>2}", self.seconds, sign, hours, minutes)
|
|
}
|
|
}
|
|
|
|
impl fmt::Display for Author {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
write!(f, "{} <{}> {}", self.name, self.email, self.time,)
|
|
}
|
|
}
|
|
|
|
#[derive(Debug, Error)]
|
|
pub enum ParseError {
|
|
#[error("missing '{0}' while parsing person signature")]
|
|
Missing(&'static str),
|
|
#[error("offset was incorrect format while parsing person signature")]
|
|
Offset(#[source] ParseIntError),
|
|
#[error("time was incorrect format while parsing person signature")]
|
|
Time(#[source] ParseIntError),
|
|
}
|
|
|
|
impl FromStr for Author {
|
|
type Err = ParseError;
|
|
|
|
fn from_str(s: &str) -> Result<Self, Self::Err> {
|
|
// Splitting the string in 4 subcomponents is expected to give back the
|
|
// following iterator entries: timezone offset, time, email, and name
|
|
let mut components = s.rsplitn(4, ' ');
|
|
let time = Time::from_components(&mut components)?;
|
|
let email = components
|
|
.next()
|
|
.ok_or(ParseError::Missing("email"))?
|
|
.trim_matches(|c| c == '<' || c == '>')
|
|
.to_owned();
|
|
let name = components.next().ok_or(ParseError::Missing("name"))?;
|
|
Ok(Self {
|
|
name: name.to_owned(),
|
|
email: email.to_owned(),
|
|
time,
|
|
})
|
|
}
|
|
}
|