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branch: refactor ahead/behind message

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A subsequent commit will teach more variants of ahead/behind messages,
so refactor the existing code to avoid code duplication and a future
combinatorial explosion.
This commit is contained in:
Jonathan Tan 2024-01-16 14:49:12 -08:00 committed by jonathantanmy
parent 22117171bd
commit 08da40bc82
1 changed files with 18 additions and 10 deletions
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28
cli/src/commands/branch.rs
View file

@ -701,16 +701,24 @@ fn cmd_branch_list(
revset::walk_revs(repo.as_ref(), &remote_added_ids, &local_added_ids)?.count();
let local_ahead_count =
revset::walk_revs(repo.as_ref(), &local_added_ids, &remote_added_ids)?.count();
if remote_ahead_count != 0 && local_ahead_count == 0 {
write!(formatter, " (ahead by {remote_ahead_count} commits)")?;
} else if remote_ahead_count == 0 && local_ahead_count != 0 {
write!(formatter, " (behind by {local_ahead_count} commits)")?;
} else if remote_ahead_count != 0 && local_ahead_count != 0 {
write!(
formatter,
" (ahead by {remote_ahead_count} commits, behind by {local_ahead_count} \
commits)"
)?;
let remote_ahead_message = if remote_ahead_count != 0 {
Some(format!("ahead by {remote_ahead_count} commits"))
} else {
None
};
let local_ahead_message = if local_ahead_count != 0 {
Some(format!("behind by {local_ahead_count} commits"))
} else {
None
};
match (remote_ahead_message, local_ahead_message) {
(Some(rm), Some(lm)) => {
write!(formatter, " ({rm}, {lm})")?;
}
(Some(m), None) | (None, Some(m)) => {
write!(formatter, " ({m})")?;
}
(None, None) => { /* do nothing */ }
}
}
print_branch_target(formatter, &remote_ref.target)?;