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gitea/vendor/github.com/acomagu/bufpipe/README.md
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Co-authored-by: techknowlogick <techknowlogick@gitea.io>
2021-06-10 16:44:25 +02:00

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# bufpipe: Buffered Pipe
[![CircleCI](https://img.shields.io/circleci/build/github/acomagu/bufpipe.svg?style=flat-square)](https://circleci.com/gh/acomagu/bufpipe) [![GoDoc](https://img.shields.io/badge/godoc-reference-blue.svg?style=flat-square)](https://godoc.org/github.com/acomagu/bufpipe)
The buffered version of io.Pipe. It's safe for concurrent use.
## How does it differ from io.Pipe?
Writes never block because the pipe has variable-sized buffer.
```Go
r, w := bufpipe.New(nil)
io.WriteString(w, "abc") // No blocking.
io.WriteString(w, "def") // No blocking, too.
w.Close()
io.Copy(os.Stdout, r)
// Output: abcdef
```
[Playground](https://play.golang.org/p/PdyBAS3pVob)
## How does it differ from bytes.Buffer?
Reads block if the internal buffer is empty until the writer is closed.
```Go
r, w := bufpipe.New(nil)
done := make(chan struct{})
go func() {
io.Copy(os.Stdout, r) // The reads block until the writer is closed.
done <- struct{}{}
}()
io.WriteString(w, "abc")
io.WriteString(w, "def")
w.Close()
<-done
// Output: abcdef
```
[Playground](https://play.golang.org/p/UppmyLeRgX6)