50 lines
1.1 KiB
Go
50 lines
1.1 KiB
Go
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// STOLEN SHAMELESSLY FROM THE TERRAFORM REPO BECAUSE VENDORING OUT
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// WRAPPEDREADLINE AND WRAPPEDSTREAMS FELT LIKE TOO MUCH WORK.
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//
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// "a little copying is better than a lot of dependency"
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//
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// Package wrappedstreams provides access to the standard OS streams
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// (stdin, stdout, stderr) even if wrapped under panicwrap.
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package wrappedstreams
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import (
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"os"
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"github.com/mitchellh/panicwrap"
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)
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// Stdin returns the true stdin of the process.
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func Stdin() *os.File {
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stdin, _, _ := fds()
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return stdin
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}
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// Stdout returns the true stdout of the process.
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func Stdout() *os.File {
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_, stdout, _ := fds()
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return stdout
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}
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// Stderr returns the true stderr of the process.
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func Stderr() *os.File {
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_, _, stderr := fds()
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return stderr
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}
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func fds() (stdin, stdout, stderr *os.File) {
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stdin, stdout, stderr = os.Stdin, os.Stdout, os.Stderr
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if panicwrap.Wrapped(nil) {
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initPlatform()
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stdin, stdout, stderr = wrappedStdin, wrappedStdout, wrappedStderr
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}
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return
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}
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// These are the wrapped standard streams. These are setup by the
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// platform specific code in initPlatform.
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var (
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wrappedStdin *os.File
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wrappedStdout *os.File
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wrappedStderr *os.File
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)
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