use super::*;
use std::fs;
#[derive(Debug, Default)]
pub(crate) struct FilesWithBackupEmitter;
impl Emitter for FilesWithBackupEmitter {
fn emit_formatted_file(
&mut self,
_output: &mut dyn Write,
FormattedFile {
filename,
original_text,
formatted_text,
}: FormattedFile<'_>,
) -> Result<EmitterResult, io::Error> {
let filename = ensure_real_path(filename);
if original_text != formatted_text {
let tmp_name = filename.with_extension("tmp");
let bk_name = filename.with_extension("bk");
fs::write(&tmp_name, formatted_text)?;
fs::rename(filename, bk_name)?;
fs::rename(tmp_name, filename)?;
}
Ok(EmitterResult::default())
}
}