| // Copyright 2015 CoreOS, 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 wal |
| |
| import "io" |
| |
| type multiReadCloser struct { |
| closers []io.Closer |
| reader io.Reader |
| } |
| |
| func (mc *multiReadCloser) Close() error { |
| var err error |
| for i := range mc.closers { |
| err = mc.closers[i].Close() |
| } |
| return err |
| } |
| |
| func (mc *multiReadCloser) Read(p []byte) (int, error) { |
| return mc.reader.Read(p) |
| } |
| |
| func MultiReadCloser(readClosers ...io.ReadCloser) io.ReadCloser { |
| cs := make([]io.Closer, len(readClosers)) |
| rs := make([]io.Reader, len(readClosers)) |
| for i := range readClosers { |
| cs[i] = readClosers[i] |
| rs[i] = readClosers[i] |
| } |
| r := io.MultiReader(rs...) |
| return &multiReadCloser{cs, r} |
| } |
