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// Copyright 2023 LiveKit, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package utils
import (
"io"
"slices"
"go.uber.org/multierr"
)
type Closers []io.Closer
func CombineClosers(cs ...io.Closer) Closers {
return append([]io.Closer{}, cs...)
}
func (s *Closers) Close() error {
var err error
for _, c := range slices.Backward(*s) {
if c != nil {
err = multierr.Append(err, c.Close())
}
}
*s = (*s)[:0]
return err
}
type CloseFuncType interface {
~func() error | ~func()
}
func CloseFunc[T CloseFuncType](fn T) io.Closer {
return closeFunc[T]{fn}
}
type closeFunc[T CloseFuncType] struct {
fn T
}
func (f closeFunc[T]) Close() error {
switch fn := any(f.fn).(type) {
case func() error:
return fn()
case func():
fn()
}
return nil
}