show merge head ids in merge state (#697)

.github/workflows/ci.yml

@@ -38,7 +38,7 @@ jobs:
 
     - name: MacOS Workaround
       if: matrix.os == 'macos-latest'
-      run: cargo clean --locked -p serde_derive -p thiserror
+      run: cargo clean -p serde_derive -p thiserror
 
     - name: Install Rust
       uses: actions-rs/toolchain@v1

Cargo.lock

@@ -312,9 +312,9 @@ checksum = "0e4075386626662786ddb0ec9081e7c7eeb1ba31951f447ca780ef9f5d568189"
 
 [[package]]
 name = "git2"
-version = "0.13.18"
+version = "0.13.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b483c6c2145421099df1b4efd50e0f6205479a072199460eff852fa15e5603c7"
+checksum = "17929de7239dea9f68aa14f94b2ab4974e7b24c1314275ffcc12a7758172fa18"
 dependencies = [
  "bitflags",
  "libc",
@@ -467,9 +467,9 @@ checksum = "18794a8ad5b29321f790b55d93dfba91e125cb1a9edbd4f8e3150acc771c1a5e"
 
 [[package]]
 name = "libgit2-sys"
-version = "0.12.19+1.1.0"
+version = "0.12.20+1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f322155d574c8b9ebe991a04f6908bb49e68a79463338d24a43d6274cb6443e6"
+checksum = "1e2f09917e00b9ad194ae72072bb5ada2cca16d8171a43e91ddba2afbb02664b"
 dependencies = [
  "cc",
  "libc",
@@ -666,9 +666,9 @@ checksum = "af8b08b04175473088b46763e51ee54da5f9a164bc162f615b91bc179dbf15a3"
 
 [[package]]
 name = "openssl-probe"
-version = "0.1.2"
+version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77af24da69f9d9341038eba93a073b1fdaaa1b788221b00a69bce9e762cb32de"
+checksum = "28988d872ab76095a6e6ac88d99b54fd267702734fd7ffe610ca27f533ddb95a"
 
 [[package]]
 name = "openssl-src"

asyncgit/Cargo.toml

@@ -14,6 +14,8 @@ keywords = ["git"]
 [dependencies]
 scopetime = { path = "../scopetime", version = "0.1" }
 git2 = { version = "0.13", features = ["vendored-openssl"] }
+# git2 = { path = "../../github/git2-rs", features = ["vendored-openssl"]}
+# git2 = { git="https://github.com/extrawurst/git2-rs.git", rev="513a8c9", features = ["vendored-openssl"]}
 rayon-core = "1.9"
 crossbeam-channel = "0.5"
 log = "0.4"

asyncgit/src/sync/merge.rs

@@ -1,10 +1,25 @@
 use crate::{
     error::{Error, Result},
-    sync::{reset_stage, reset_workdir, utils},
+    sync::{reset_stage, reset_workdir, utils, CommitId},
 };
 use git2::{BranchType, MergeOptions};
 use scopetime::scope_time;
 
+///
+pub fn merge_state_info(repo_path: &str) -> Result<Vec<CommitId>> {
+    scope_time!("merge_state_info");
+
+    let mut repo = utils::repo(repo_path)?;
+
+    let mut ids: Vec<CommitId> = Vec::new();
+    repo.mergehead_foreach(|id| {
+        ids.push(CommitId::from(*id));
+        true
+    })?;
+
+    Ok(ids)
+}
+
 /// does these steps:
 /// * reset all staged changes,
 /// * revert all changes in workdir
@@ -47,3 +62,32 @@ pub fn merge_branch(repo_path: &str, branch: &str) -> Result<()> {
 
     Ok(())
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::sync::{
+        create_branch,
+        tests::{repo_init, write_commit_file},
+    };
+
+    #[test]
+    fn test_smoke() {
+        let (_td, repo) = repo_init().unwrap();
+        let root = repo.path().parent().unwrap();
+        let repo_path = root.as_os_str().to_str().unwrap();
+
+        let c1 =
+            write_commit_file(&repo, "test.txt", "test", "commit1");
+
+        create_branch(repo_path, "foo").unwrap();
+
+        write_commit_file(&repo, "test.txt", "test2", "commit2");
+
+        merge_branch(repo_path, "master").unwrap();
+
+        let mergeheads = merge_state_info(repo_path).unwrap();
+
+        assert_eq!(mergeheads[0], c1);
+    }
+}

asyncgit/src/sync/mod.rs

@@ -50,7 +50,7 @@ pub use hooks::{
 pub use hunks::{reset_hunk, stage_hunk, unstage_hunk};
 pub use ignore::add_to_ignore;
 pub use logwalker::LogWalker;
-pub use merge::{abort_merge, merge_branch};
+pub use merge::{abort_merge, merge_branch, merge_state_info};
 pub use remotes::{
     get_default_remote, get_remotes, push::AsyncProgress,
     tags::PushTagsProgress,

src/tabs/status.rs

@@ -21,6 +21,7 @@ use asyncgit::{
 };
 use crossbeam_channel::Sender;
 use crossterm::event::Event;
+use itertools::Itertools;
 use std::convert::Into;
 use std::convert::TryFrom;
 use tui::{
@@ -214,9 +215,19 @@ impl Status {
         f: &mut tui::Frame<B>,
         r: tui::layout::Rect,
     ) -> Result<()> {
-        if let Ok(state) = asyncgit::sync::repo_state(CWD) {
+        if let Ok(state) = sync::repo_state(CWD) {
             if state != RepoState::Clean {
-                let txt = format!("{:?}", state);
+                let ids =
+                    sync::merge_state_info(CWD).unwrap_or_default();
+                let ids = format!(
+                    "({})",
+                    ids.iter()
+                        .map(|id| sync::CommitId::get_short_string(
+                            id
+                        ))
+                        .join(",")
+                );
+                let txt = format!("{:?} {}", state, ids);
                 let txt_len = u16::try_from(txt.len())?;
                 let w = Paragraph::new(txt)
                     .style(Style::default().fg(Color::Red))