// List is used ot list all the keys under a given
// prefix, up to the next prefix.
//~ func (i *InmemBackend) List(prefix string) ([]string, error) {
public async Task <IEnumerable <string> > ListAsync(string prefix)
{
using (var defer = new Util.Defer())
{
//~ i.permitPool.Acquire()
//~ defer i.permitPool.Release()
await _permitPool.Acquire();
//~ i.l.RLock()
//~ defer i.l.RUnlock()
_l.EnterReadLock();
defer.Add(() => _l.ExitReadLock());
//~ var out []string
//~ seen := make(map[string]interface{})
var @out = new List <string>();
var seen = new Dictionary <string, bool>();
//~ walkFn := func(s string, v interface{}) bool {
//~ trimmed := strings.TrimPrefix(s, prefix)
//~ sep := strings.Index(trimmed, "/")
//~ if sep == -1 {
//~ out = append(out, trimmed)
//~ } else {
//~ trimmed = trimmed[:sep+1]
//~ if _, ok := seen[trimmed]; !ok {
//~ out = append(out, trimmed)
//~ seen[trimmed] = struct{}{}
//~ }
//~ }
//~ return false
//~ }
Walker <Entry> walkFn = (s, v) =>
{
var trimmed = s.StartsWith(prefix) ? s.Substring(prefix.Length) : s;
var sep = trimmed.IndexOf('/');
if (sep == -1)
{
@out.Add(trimmed);
}
else
{
trimmed = trimmed.Substring(0, sep + 1);
if (!seen.ContainsKey(trimmed))
{
@out.Add(trimmed);
seen[trimmed] = true;
}
}
return(false);
};
//~ i.root.WalkPrefix(prefix, walkFn)
//~ return out, nil
_root.WalkPrefix(prefix, walkFn);
return(@out);
}
}