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#![warn(rust_2018_idioms)]
use std::io::Write;
use git2::{Repository, Tree};
use thiserror::Error;
#[derive(Error, Debug)]
pub enum Error {
#[error(transparent)]
Git(#[from] git2::Error),
}
pub struct Todos<'a> {
pub repo: &'a Repository,
}
impl Todos<'_> {
/// Write TODO lines.
///
/// Writes TODO lines since `tree` to `write_to`.
///
/// # Panics
///
/// Panics if writing to `write_to` fails.
pub fn write_since<W: Write>(
&self,
tree: Tree<'_>,
write_to: &mut W,
) -> Result<(), Error> {
let diff = self.repo.diff_tree_to_workdir(Some(&tree), None)?;
diff.foreach(
&mut |_file, _progress| {
true
},
None,
None,
Some(
&mut |delta, _hunk, line| {
if let Some(line_number) = line.new_lineno() {
if let Ok(l) = std::str::from_utf8(line.content()) {
if l.contains("TODO") {
if let Some(path) = delta.new_file().path() {
write!(
write_to,
"{}:{}:{}",
path.display(),
line_number,
l,
).expect("write error");
}
}
}
}
true
}
),
)?;
Ok(())
}
/// Get a Git tree for the master branch.
pub fn master_tree(&self) -> Result<Tree<'_>, Error> {
let master = self.repo.find_branch("master", git2::BranchType::Local)?;
Ok(master.get().peel_to_tree()?)
}
}
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