Print signed commit's id to stdout

Author: cruessler

gitoxide-core/src/repository/commit.rs

@@ -47,7 +47,7 @@ pub fn verify(repo: gix::Repository, rev_spec: Option<&str>) -> Result<()> {
     Ok(())
 }
 
-pub fn sign(repo: gix::Repository, rev_spec: Option<&str>) -> Result<()> {
+pub fn sign(repo: gix::Repository, rev_spec: Option<&str>, mut out: impl std::io::Write) -> Result<()> {
     let rev_spec = rev_spec.unwrap_or("HEAD");
     let commit = repo
         .rev_parse_single(format!("{rev_spec}^{{commit}}").as_str())?
@@ -96,7 +96,9 @@ pub fn sign(repo: gix::Repository, rev_spec: Option<&str>) -> Result<()> {
         .extra_headers
         .push((BStr::new(SIGNATURE_FIELD_NAME), extra_header));
 
-    eprintln!("{commit_ref:?}");
+    let signed_id = repo.write_object(&commit_ref)?;
+
+    writeln!(&mut out, "{signed_id}")?;
 
     Ok(())
 }

src/plumbing/main.rs

@@ -1294,8 +1294,8 @@ pub fn main() -> Result<()> {
                 progress,
                 progress_keep_open,
                 None,
-                move |_progress, _out, _err| {
-                    core::repository::commit::sign(repository(Mode::Lenient)?, rev_spec.as_deref())
+                move |_progress, out, _err| {
+                    core::repository::commit::sign(repository(Mode::Lenient)?, rev_spec.as_deref(), out)
                 },
             ),
             commit::Subcommands::Describe {