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package resolve
import (
"fmt"
"codeberg.org/lindenii/furgit/object"
"codeberg.org/lindenii/furgit/objectid"
)
// Path resolves parts within the tree identified by root and returns the final
// tree entry.
//
// The root object may be any tree-ish object accepted by PeelToTree.
//
// parts must contain at least one path segment. Intermediate path segments
// must resolve to tree entries. The final entry is returned without loading
// its object.
func (r *Resolver) Path(root objectid.ObjectID, parts [][]byte) (object.TreeEntry, error) {
if len(parts) == 0 {
return object.TreeEntry{}, fmt.Errorf("object/resolve: empty tree path")
}
current, err := r.PeelToTree(root)
if err != nil {
return object.TreeEntry{}, err
}
for i, part := range parts {
if len(part) == 0 {
return object.TreeEntry{}, fmt.Errorf("object/resolve: empty tree path segment")
}
entry := current.Object().Entry(part)
if entry == nil {
return object.TreeEntry{}, fmt.Errorf("object/resolve: tree entry %q not found", part)
}
if i == len(parts)-1 {
return *entry, nil
}
if entry.Mode != object.FileModeDir {
return object.TreeEntry{}, fmt.Errorf("object/resolve: path segment %q is not a tree", part)
}
current, err = r.ExactTree(entry.ID)
if err != nil {
return object.TreeEntry{}, err
}
}
return object.TreeEntry{}, fmt.Errorf("object/resolve: tree entry not found")
}
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