42 lines
1,015 B
Go
42 lines
1,015 B
Go
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/*
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Copyright (c) 2014 VMware, Inc. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package progress
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// Tee works like Unix tee; it forwards all progress reports it receives to the
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// specified sinks
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func Tee(s1, s2 Sinker) Sinker {
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fn := func() chan<- Report {
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d1 := s1.Sink()
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d2 := s2.Sink()
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u := make(chan Report)
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go tee(u, d1, d2)
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return u
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}
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return SinkFunc(fn)
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}
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func tee(u <-chan Report, d1, d2 chan<- Report) {
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defer close(d1)
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defer close(d2)
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for r := range u {
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d1 <- r
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d2 <- r
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}
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}
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