add --no-swap flag

Cargo.toml

@@ -44,6 +44,7 @@ console = "0.15.7"
 insta = "1.34.0"
 ansi-to-html = "0.1.3"
 regex-automata = "0.4.3"
+rstest = "0.17.0"
 
 [profile.release]
 opt-level = 3

src/cli.rs

@@ -64,6 +64,10 @@ w - match full words only
  /// use captured values like $1, $2, etc.
  pub replace_with: String,
 
+ #[arg(long)]
+ /// Overwrite file in place instead of creating tmp file and swapping atomically
+ pub in_place: bool,
+
  /// The path to file(s). This is optional - sd can also read from STDIN.
  ///
  /// Note: sd modifies files in-place by default. See documentation for

src/main.rs

@@ -91,7 +91,12 @@ fn try_main() -> Result<()> {
  for (source, replaced) in sources.iter().zip(replaced) {
  match source {
  Source::File(path) => {
- if let Err(e) = write_with_temp(path, &replaced) {
+ let result = if !options.in_place {
+ write_with_temp(path, &replaced)
+ } else {
+ write_in_place(path, &replaced)
+ };
+ if let Err(e) = result {
  failed_jobs.push((path.to_owned(), e));
  }
  }
@@ -130,3 +135,13 @@ fn write_with_temp(path: &PathBuf, data: &[u8]) -> Result<()> {
 
  Ok(())
 }
+
+fn write_in_place(path: &PathBuf, data: &[u8]) -> Result<()> {
+ let path = fs::canonicalize(path)?;
+
+ let mut source = fs::OpenOptions::new().write(true).open(path)?;
+ source.write_all(&data)?;
+ source.set_len(data.len() as u64)?;
+
+ Ok(())
+}