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use std::path::PathBuf;
use git2::{Config, Repository};
use crate::external::{Error, Vcs};
use std::convert::TryFrom;
pub struct Git2 {
config_snapshot: git2::Config,
config_live: git2::Config,
}
impl Git2 {
#[must_use]
pub fn new(mut config: git2::Config) -> Git2 {
Git2 {
config_snapshot: config.snapshot().unwrap(),
config_live: config,
}
}
fn config_defined(&self, lint_name: &str) -> Result<bool, Error> {
self.config_snapshot
.entries(Some(lint_name))
.map(|entries| entries.count() > 0)
.map_err(Error::from)
}
}
impl Vcs for Git2 {
fn entries(&self, glob: Option<&str>) -> Result<Vec<String>, Error> {
let mut entries = vec![];
for entry in &self.config_snapshot.entries(glob)? {
if let Some(name) = entry?.name() {
entries.push(name.into());
}
}
Ok(entries)
}
fn get_bool(&self, name: &str) -> Result<Option<bool>, Error> {
if self.config_defined(name)? {
Ok(Some(self.config_snapshot.get_bool(name)?))
} else {
Ok(None)
}
}
fn get_str(&self, name: &str) -> Result<Option<&str>, Error> {
let defined = self.config_defined(name)?;
if defined {
self.config_snapshot
.get_str(name)
.map(Some)
.map_err(Error::from)
} else {
Ok(None)
}
}
fn get_i64(&self, name: &str) -> Result<Option<i64>, Error> {
let defined = self.config_defined(name)?;
if defined {
self.config_snapshot
.get_i64(name)
.map(Some)
.map_err(Error::from)
} else {
Ok(None)
}
}
fn set_str(&mut self, name: &str, value: &str) -> Result<(), Error> {
self.config_live.set_str(name, value)?;
let config = self.config_live.snapshot()?;
self.config_snapshot = config;
Ok(())
}
fn set_i64(&mut self, name: &str, value: i64) -> Result<(), Error> {
self.config_live.set_i64(name, value)?;
let config = self.config_live.snapshot()?;
self.config_snapshot = config;
Ok(())
}
fn remove(&mut self, name: &str) -> Result<(), Error> {
self.config_live.remove(name)?;
let config = self.config_live.snapshot()?;
self.config_snapshot = config;
Ok(())
}
}
impl TryFrom<PathBuf> for Git2 {
type Error = Error;
fn try_from(current_dir: PathBuf) -> Result<Self, Self::Error> {
Repository::discover(current_dir)
.and_then(|x| x.config())
.or_else(|_| Config::open_default())
.map(Git2::new)
.map_err(Error::from)
}
}