Function git_repository::reference::log::message

source · 
pub fn message(operation: &str, message: &BStr, num_parents: usize) -> BString
Expand description

Generate a message typical for git commit logs based on the given operation, commit message and num_parents of the commit.

Examples found in repository?
src/repository/object.rs (line 167)
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    pub fn commit_as<'a, 'c, Name, E>(
        &self,
        committer: impl Into<git_actor::SignatureRef<'c>>,
        author: impl Into<git_actor::SignatureRef<'a>>,
        reference: Name,
        message: impl AsRef<str>,
        tree: impl Into<ObjectId>,
        parents: impl IntoIterator<Item = impl Into<ObjectId>>,
    ) -> Result<Id<'_>, commit::Error>
    where
        Name: TryInto<FullName, Error = E>,
        commit::Error: From<E>,
    {
        use git_ref::{
            transaction::{Change, RefEdit},
            Target,
        };

        // TODO: possibly use CommitRef to save a few allocations (but will have to allocate for object ids anyway.
        //       This can be made vastly more efficient though if we wanted to, so we lie in the API
        let reference = reference.try_into()?;
        let commit = git_object::Commit {
            message: message.as_ref().into(),
            tree: tree.into(),
            author: author.into().to_owned(),
            committer: committer.into().to_owned(),
            encoding: None,
            parents: parents.into_iter().map(|id| id.into()).collect(),
            extra_headers: Default::default(),
        };

        let commit_id = self.write_object(&commit)?;
        self.edit_reference(RefEdit {
            change: Change::Update {
                log: LogChange {
                    mode: RefLog::AndReference,
                    force_create_reflog: false,
                    message: crate::reference::log::message("commit", commit.message.as_ref(), commit.parents.len()),
                },
                expected: match commit.parents.first().map(|p| Target::Peeled(*p)) {
                    Some(previous) => {
                        if reference.as_bstr() == "HEAD" {
                            PreviousValue::MustExistAndMatch(previous)
                        } else {
                            PreviousValue::ExistingMustMatch(previous)
                        }
                    }
                    None => PreviousValue::MustNotExist,
                },
                new: Target::Peeled(commit_id.inner),
            },
            name: reference,
            deref: true,
        })?;
        Ok(commit_id)
    }