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77 lines
1.7 KiB
Go
77 lines
1.7 KiB
Go
//go:build !windows
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// +build !windows
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package twin
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import (
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"os"
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"os/signal"
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"syscall"
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log "github.com/sirupsen/logrus"
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"golang.org/x/term"
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)
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func (screen *UnixScreen) setupSigwinchNotification() {
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screen.sigwinch = make(chan int, 1)
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screen.sigwinch <- 0 // Trigger initial screen size query
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sigwinch := make(chan os.Signal, 1)
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signal.Notify(sigwinch, syscall.SIGWINCH)
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go func() {
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for {
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// Await window resize signal
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<-sigwinch
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select {
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case screen.sigwinch <- 0:
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// Screen.Size() method notified about resize
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default:
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// Notification already pending, never mind
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}
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// Notify client app.
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select {
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case screen.events <- EventResize{}:
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// Event delivered
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default:
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// This likely means that the user isn't processing events
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// quickly enough. Maybe the user's queue will get flooded if
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// the window is resized too quickly?
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log.Warn("Unable to deliver EventResize, event queue full")
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}
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}
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}()
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}
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func (screen *UnixScreen) setupTtyInTtyOut() error {
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// os.Stdout is a stream that goes to our terminal window.
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//
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// So if we read from there, we'll get input from the terminal window.
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//
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// Reading from os.Stdin will fail if we're getting data piped into
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// ourselves from some other command.
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//
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// Tested on macOS and Linux, works like a charm!
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screen.ttyIn = os.Stdout // <- YES, WE SHOULD ASSIGN STDOUT TO TTYIN
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// Set input stream to raw mode
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var err error
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screen.oldTerminalState, err = term.MakeRaw(int(screen.ttyIn.Fd()))
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if err != nil {
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return err
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}
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screen.ttyOut = os.Stdout
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return nil
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}
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func (screen *UnixScreen) restoreTtyInTtyOut() error {
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err := term.Restore(int(screen.ttyIn.Fd()), screen.oldTerminalState)
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if err != nil {
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return err
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}
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return nil
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}
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