mirror of
https://github.com/cwinfo/matterbridge.git
synced 2024-11-15 07:30:26 +00:00
104 lines
3.0 KiB
Go
104 lines
3.0 KiB
Go
// Copyright 2011 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
// +build windows
|
|
|
|
// Package terminal provides support functions for dealing with terminals, as
|
|
// commonly found on UNIX systems.
|
|
//
|
|
// Putting a terminal into raw mode is the most common requirement:
|
|
//
|
|
// oldState, err := terminal.MakeRaw(0)
|
|
// if err != nil {
|
|
// panic(err)
|
|
// }
|
|
// defer terminal.Restore(0, oldState)
|
|
package terminal
|
|
|
|
import (
|
|
"os"
|
|
|
|
"golang.org/x/sys/windows"
|
|
)
|
|
|
|
type State struct {
|
|
mode uint32
|
|
}
|
|
|
|
// IsTerminal returns whether the given file descriptor is a terminal.
|
|
func IsTerminal(fd int) bool {
|
|
var st uint32
|
|
err := windows.GetConsoleMode(windows.Handle(fd), &st)
|
|
return err == nil
|
|
}
|
|
|
|
// MakeRaw put the terminal connected to the given file descriptor into raw
|
|
// mode and returns the previous state of the terminal so that it can be
|
|
// restored.
|
|
func MakeRaw(fd int) (*State, error) {
|
|
var st uint32
|
|
if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil {
|
|
return nil, err
|
|
}
|
|
raw := st &^ (windows.ENABLE_ECHO_INPUT | windows.ENABLE_PROCESSED_INPUT | windows.ENABLE_LINE_INPUT | windows.ENABLE_PROCESSED_OUTPUT)
|
|
if err := windows.SetConsoleMode(windows.Handle(fd), raw); err != nil {
|
|
return nil, err
|
|
}
|
|
return &State{st}, nil
|
|
}
|
|
|
|
// GetState returns the current state of a terminal which may be useful to
|
|
// restore the terminal after a signal.
|
|
func GetState(fd int) (*State, error) {
|
|
var st uint32
|
|
if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil {
|
|
return nil, err
|
|
}
|
|
return &State{st}, nil
|
|
}
|
|
|
|
// Restore restores the terminal connected to the given file descriptor to a
|
|
// previous state.
|
|
func Restore(fd int, state *State) error {
|
|
return windows.SetConsoleMode(windows.Handle(fd), state.mode)
|
|
}
|
|
|
|
// GetSize returns the dimensions of the given terminal.
|
|
func GetSize(fd int) (width, height int, err error) {
|
|
var info windows.ConsoleScreenBufferInfo
|
|
if err := windows.GetConsoleScreenBufferInfo(windows.Handle(fd), &info); err != nil {
|
|
return 0, 0, err
|
|
}
|
|
return int(info.Size.X), int(info.Size.Y), nil
|
|
}
|
|
|
|
// ReadPassword reads a line of input from a terminal without local echo. This
|
|
// is commonly used for inputting passwords and other sensitive data. The slice
|
|
// returned does not include the \n.
|
|
func ReadPassword(fd int) ([]byte, error) {
|
|
var st uint32
|
|
if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil {
|
|
return nil, err
|
|
}
|
|
old := st
|
|
|
|
st &^= (windows.ENABLE_ECHO_INPUT)
|
|
st |= (windows.ENABLE_PROCESSED_INPUT | windows.ENABLE_LINE_INPUT | windows.ENABLE_PROCESSED_OUTPUT)
|
|
if err := windows.SetConsoleMode(windows.Handle(fd), st); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
defer windows.SetConsoleMode(windows.Handle(fd), old)
|
|
|
|
var h windows.Handle
|
|
p, _ := windows.GetCurrentProcess()
|
|
if err := windows.DuplicateHandle(p, windows.Handle(fd), p, &h, 0, false, windows.DUPLICATE_SAME_ACCESS); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
f := os.NewFile(uintptr(h), "stdin")
|
|
defer f.Close()
|
|
return readPasswordLine(f)
|
|
}
|