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package loose
import (
"errors"
"os"
"path"
"slices"
"codeberg.org/lindenii/furgit/ref"
"codeberg.org/lindenii/furgit/refstore"
)
// List lists loose references matching pattern.
//
// Pattern uses path.Match syntax against full reference names.
// Empty pattern matches all references.
func (store *Store) List(pattern string) ([]ref.Ref, error) {
matchAll := pattern == ""
if !matchAll {
if _, err := path.Match(pattern, "HEAD"); err != nil {
return nil, err
}
}
names, err := store.collectLooseRefNames()
if err != nil {
return nil, err
}
slices.Sort(names)
refs := make([]ref.Ref, 0, len(names))
for _, name := range names {
if !matchAll {
matched, err := path.Match(pattern, name)
if err != nil {
return nil, err
}
if !matched {
continue
}
}
resolved, err := store.resolveOne(name)
if err != nil {
if errors.Is(err, refstore.ErrReferenceNotFound) {
continue
}
return nil, err
}
refs = append(refs, resolved)
}
return refs, nil
}
// collectLooseRefNames returns loose ref names available in this backend.
func (store *Store) collectLooseRefNames() ([]string, error) {
names := make([]string, 0, 16)
if _, err := store.root.Stat("HEAD"); err == nil {
names = append(names, "HEAD")
} else if !errors.Is(err, os.ErrNotExist) {
return nil, err
}
var walk func(string) error
walk = func(dir string) error {
file, err := store.root.Open(dir)
if err != nil {
if errors.Is(err, os.ErrNotExist) {
return nil
}
return err
}
defer func() { _ = file.Close() }()
entries, err := file.ReadDir(-1)
if err != nil {
return err
}
for _, entry := range entries {
name := path.Join(dir, entry.Name())
if entry.IsDir() {
if err := walk(name); err != nil {
return err
}
continue
}
names = append(names, name)
}
return nil
}
if err := walk("refs"); err != nil {
return nil, err
}
return names, nil
}
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