mirror of https://github.com/Hilbis/Hilbish
83 lines
2.2 KiB
Go
83 lines
2.2 KiB
Go
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// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build solaris
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package readline
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import (
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"syscall"
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"golang.org/x/sys/unix"
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)
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// State contains the state of a terminal.
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type State struct {
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state *unix.Termios
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}
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// IsTerminal returns true if the given file descriptor is a terminal.
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func IsTerminal(fd int) bool {
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_, err := unix.IoctlGetTermio(fd, unix.TCGETA)
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return err == nil
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}
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// MakeRaw puts the terminal connected to the given file descriptor into raw
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// mode and returns the previous state of the terminal so that it can be
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// restored.
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// see http://cr.illumos.org/~webrev/andy_js/1060/
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func MakeRaw(fd int) (*State, error) {
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oldTermiosPtr, err := unix.IoctlGetTermios(fd, unix.TCGETS)
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if err != nil {
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return nil, err
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}
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oldTermios := *oldTermiosPtr
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newTermios := oldTermios
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newTermios.Iflag &^= syscall.IGNBRK | syscall.BRKINT | syscall.PARMRK | syscall.ISTRIP | syscall.INLCR | syscall.IGNCR | syscall.ICRNL | syscall.IXON
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//newTermios.Oflag &^= syscall.OPOST
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newTermios.Lflag &^= syscall.ECHO | syscall.ECHONL | syscall.ICANON | syscall.ISIG | syscall.IEXTEN
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newTermios.Cflag &^= syscall.CSIZE | syscall.PARENB
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newTermios.Cflag |= syscall.CS8
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newTermios.Cc[unix.VMIN] = 1
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newTermios.Cc[unix.VTIME] = 0
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if err := unix.IoctlSetTermios(fd, unix.TCSETS, &newTermios); err != nil {
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return nil, err
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}
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return &State{
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state: oldTermiosPtr,
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}, nil
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}
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// Restore restores the terminal connected to the given file descriptor to a
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// previous state.
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func Restore(fd int, oldState *State) error {
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return unix.IoctlSetTermios(fd, unix.TCSETS, oldState.state)
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}
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// GetState returns the current state of a terminal which may be useful to
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// restore the terminal after a signal.
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func GetState(fd int) (*State, error) {
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oldTermiosPtr, err := unix.IoctlGetTermios(fd, unix.TCGETS)
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if err != nil {
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return nil, err
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}
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return &State{
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state: oldTermiosPtr,
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}, nil
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}
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// GetSize returns the dimensions of the given terminal.
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func GetSize(fd int) (width, height int, err error) {
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ws, err := unix.IoctlGetWinsize(fd, unix.TIOCGWINSZ)
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if err != nil {
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return 0, 0, err
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}
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return int(ws.Col), int(ws.Row), nil
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}
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