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package testgit
import (
"fmt"
"strings"
"testing"
"lindenii.org/go/furgit/object/id"
)
// CommitTreeIdentity configures an author or committer identity
// for [Repo.CommitTree].
type CommitTreeIdentity struct {
Name string
Email string
}
// CommitTreeOptions configures [Repo.CommitTree].
type CommitTreeOptions struct {
Message string
Author CommitTreeIdentity
Committer CommitTreeIdentity
AuthorDate string
CommitterDate string
}
// CommitTree creates a commit object from a tree and optional parents,
// and returns its object ID.
func (repo *Repo) CommitTree(
tb testing.TB,
tree id.ObjectID,
opts CommitTreeOptions,
parents ...id.ObjectID,
) (id.ObjectID, error) {
tb.Helper()
args := make([]string, 0, 1+2*len(parents)+4)
args = append(args, "commit-tree")
for _, parent := range parents {
args = append(args, "-p", parent.String())
}
args = append(args, "-m", opts.Message, "--end-of-options", tree.String())
cmd := repo.Command(tb, "git", args...)
if opts.Author.Name != "" {
cmd.Env = setEnv(cmd.Env, "GIT_AUTHOR_NAME", opts.Author.Name)
}
if opts.Author.Email != "" {
cmd.Env = setEnv(cmd.Env, "GIT_AUTHOR_EMAIL", opts.Author.Email)
}
if opts.AuthorDate != "" {
cmd.Env = setEnv(cmd.Env, "GIT_AUTHOR_DATE", opts.AuthorDate)
}
if opts.Committer.Name != "" {
cmd.Env = setEnv(cmd.Env, "GIT_COMMITTER_NAME", opts.Committer.Name)
}
if opts.Committer.Email != "" {
cmd.Env = setEnv(cmd.Env, "GIT_COMMITTER_EMAIL", opts.Committer.Email)
}
if opts.CommitterDate != "" {
cmd.Env = setEnv(cmd.Env, "GIT_COMMITTER_DATE", opts.CommitterDate)
}
stdout, err := cmd.Output()
if err != nil {
return id.ObjectID{}, fmt.Errorf("commit-tree: %w", err)
}
commitID, err := repo.objectFormat.FromString(strings.TrimSuffix(string(stdout), "\n"))
if err != nil {
return id.ObjectID{}, fmt.Errorf("parse git commit-tree output %q: %w", string(stdout), err)
}
return commitID, nil
}
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