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package files
import (
"errors"
"fmt"
"strings"
"codeberg.org/lindenii/furgit/ref"
"codeberg.org/lindenii/furgit/refstore"
)
// Resolve resolves one reference name from the files store visible namespace.
func (store *Store) Resolve(name string) (ref.Ref, error) { //nolint:ireturn
if name == "" {
return nil, refstore.ErrReferenceNotFound
}
resolved, err := store.readLooseRef(name)
if err == nil {
return resolved, nil
}
if !errors.Is(err, refstore.ErrReferenceNotFound) {
refPath := store.loosePath(name)
info, statErr := store.rootFor(refPath.root).Stat(refPath.path)
if statErr != nil || !info.IsDir() {
return nil, err
}
}
packed, packedErr := store.readPackedRefs()
if packedErr != nil {
return nil, packedErr
}
detached, ok := packed.byName[name]
if !ok {
return nil, refstore.ErrReferenceNotFound
}
return detached, nil
}
// ResolveFully resolves symbolic references through the visible files store
// namespace until one detached reference is reached.
func (store *Store) ResolveFully(name string) (ref.Detached, error) {
cur := name
seen := make(map[string]struct{})
for {
if _, ok := seen[cur]; ok {
return ref.Detached{}, fmt.Errorf("refstore/files: symbolic reference cycle at %q", cur)
}
seen[cur] = struct{}{}
resolved, err := store.Resolve(cur)
if err != nil {
return ref.Detached{}, err
}
switch resolved := resolved.(type) {
case ref.Detached:
return resolved, nil
case ref.Symbolic:
target := strings.TrimSpace(resolved.Target)
if target == "" {
return ref.Detached{}, fmt.Errorf("refstore/files: symbolic reference %q has empty target", resolved.Name())
}
cur = target
default:
return ref.Detached{}, fmt.Errorf("refstore/files: unsupported reference type %T", resolved)
}
}
}
|
