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// SPDX-License-Identifier: AGPL-3.0-only
// SPDX-FileContributor: Runxi Yu <https://runxiyu.org>
package main
import (
"github.com/go-git/go-git/v5"
"github.com/go-git/go-git/v5/plumbing"
)
// get_ref_hash_from_type_and_name returns the hash of a reference given its
// type and name as supplied in URL queries.
func get_ref_hash_from_type_and_name(repo *git.Repository, ref_type, ref_name string) (ref_hash plumbing.Hash, err error) {
var ref *plumbing.Reference
switch ref_type {
case "":
if ref, err = repo.Head(); err != nil {
return
}
ref_hash = ref.Hash()
case "commit":
ref_hash = plumbing.NewHash(ref_name)
case "branch":
if ref, err = repo.Reference(plumbing.NewBranchReferenceName(ref_name), true); err != nil {
return
}
ref_hash = ref.Hash()
case "tag":
if ref, err = repo.Reference(plumbing.NewTagReferenceName(ref_name), true); err != nil {
return
}
ref_hash = ref.Hash()
default:
panic("Invalid ref type " + ref_type)
}
return
}
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