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packer/vendor/github.com/mitchellh/prefixedio
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Chris Bednarski dbdb988634
Vendor all dependencies 		10 years ago
..
LICENSE Vendor all dependencies 10 years ago
README.md Vendor all dependencies 10 years ago
reader.go Vendor all dependencies 10 years ago

README.md

prefixedio

prefixedio (Golang package: prefixedio) is a package for Go that takes an io.Reader and de-multiplexes line-oriented data based on a line prefix to a set of readers.

Installation and Usage

Install using go get github.com/mitchellh/prefixedio.

Full documentation is available at http://godoc.org/github.com/mitchellh/prefixedio

Below is an example of its usage ignoring errors:

// Assume r is some set io.Reader. Perhaps a file, network, anything.
var r io.Reader

// Initialize the prefixed reader
pr, _ := prefixedio.NewReader(r)

// Grab readers for a couple prefixes
errR, _ := pr.Prefix("err: ")
outR, _ := pr.Prefix("out: ")

// Copy the data to different places based on the prefix
go io.Copy(os.Stderr, errR)
go io.Copy(os.Stdout, outR)