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package repository
import (
"fmt"
"codeberg.org/lindenii/furgit/object"
"codeberg.org/lindenii/furgit/objectid"
"codeberg.org/lindenii/furgit/objectstored"
"codeberg.org/lindenii/furgit/objecttype"
)
// ReadStored reads, parses, and wraps one object by ID.
func (repo *Repository) ReadStored(id objectid.ObjectID) (objectstored.StoredObject, error) {
parsed, err := repo.readParsedObject(id)
if err != nil {
return nil, err
}
switch parsed := parsed.(type) {
case *object.Blob:
return objectstored.NewStoredBlob(id, parsed), nil
case *object.Tree:
return objectstored.NewStoredTree(id, parsed), nil
case *object.Commit:
return objectstored.NewStoredCommit(id, parsed), nil
case *object.Tag:
return objectstored.NewStoredTag(id, parsed), nil
default:
return nil, fmt.Errorf("repository: unsupported parsed object type %T", parsed)
}
}
// ReadStoredBlob reads and parses a blob object by ID.
func (repo *Repository) ReadStoredBlob(id objectid.ObjectID) (*objectstored.StoredBlob, error) {
stored, err := repo.ReadStored(id)
if err != nil {
return nil, err
}
blob, ok := stored.(*objectstored.StoredBlob)
if !ok {
return nil, fmt.Errorf("repository: expected blob object %s, got %v", id, stored.Object().ObjectType())
}
return blob, nil
}
// ReadStoredTree reads and parses a tree object by ID.
func (repo *Repository) ReadStoredTree(id objectid.ObjectID) (*objectstored.StoredTree, error) {
stored, err := repo.ReadStored(id)
if err != nil {
return nil, err
}
tree, ok := stored.(*objectstored.StoredTree)
if !ok {
return nil, fmt.Errorf("repository: expected tree object %s, got %v", id, stored.Object().ObjectType())
}
return tree, nil
}
// ReadStoredCommit reads and parses a commit object by ID.
func (repo *Repository) ReadStoredCommit(id objectid.ObjectID) (*objectstored.StoredCommit, error) {
stored, err := repo.ReadStored(id)
if err != nil {
return nil, err
}
commit, ok := stored.(*objectstored.StoredCommit)
if !ok {
return nil, fmt.Errorf("repository: expected commit object %s, got %v", id, stored.Object().ObjectType())
}
return commit, nil
}
// ReadStoredTag reads and parses a tag object by ID.
func (repo *Repository) ReadStoredTag(id objectid.ObjectID) (*objectstored.StoredTag, error) {
stored, err := repo.ReadStored(id)
if err != nil {
return nil, err
}
tag, ok := stored.(*objectstored.StoredTag)
if !ok {
return nil, fmt.Errorf("repository: expected tag object %s, got %v", id, stored.Object().ObjectType())
}
return tag, nil
}
// readParsedObject reads bytes content from storage and parses one object.
func (repo *Repository) readParsedObject(id objectid.ObjectID) (object.Object, error) {
ty, content, err := repo.objects.ReadBytesContent(id)
if err != nil {
return nil, err
}
parsed, err := object.ParseObjectWithoutHeader(ty, content, repo.algo)
if err != nil {
tyName, ok := objecttype.Name(ty)
if !ok {
tyName = fmt.Sprintf("type %d", ty)
}
return nil, fmt.Errorf("repository: parse object %s (%s): %w", id, tyName, err)
}
return parsed, nil
}
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