vendor: github.com/moby/term v0.5.0
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>pull/1806/head
Sebastiaan van Stijn
2 years ago
parent
4429ccbcc2
commit
75b5c6560f
@ -0,0 +1,3 @@
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// Package term provides structures and helper functions to work with
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// terminal (state, sizes).
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package term
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@ -1,20 +0,0 @@
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//go:build !windows
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// +build !windows
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package term
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import (
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"golang.org/x/sys/unix"
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)
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func tcget(fd uintptr) (*Termios, error) {
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p, err := unix.IoctlGetTermios(int(fd), getTermios)
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if err != nil {
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return nil, err
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}
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return p, nil
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}
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func tcset(fd uintptr, p *Termios) error {
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return unix.IoctlSetTermios(int(fd), setTermios, p)
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}
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@ -1,119 +1,85 @@
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//go:build !windows
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// +build !windows
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// Package term provides structures and helper functions to work with
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// terminal (state, sizes).
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package term
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import (
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"errors"
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"fmt"
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"io"
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"os"
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"os/signal"
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"golang.org/x/sys/unix"
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)
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import "io"
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// ErrInvalidState is returned if the state of the terminal is invalid.
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var ErrInvalidState = errors.New("Invalid terminal state")
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// State represents the state of the terminal.
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type State struct {
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termios Termios
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}
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// State holds the platform-specific state / console mode for the terminal.
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type State terminalState
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// Winsize represents the size of the terminal window.
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type Winsize struct {
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Height uint16
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Width uint16
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x uint16
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y uint16
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// Only used on Unix
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x uint16
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y uint16
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}
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// StdStreams returns the standard streams (stdin, stdout, stderr).
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//
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// On Windows, it attempts to turn on VT handling on all std handles if
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// supported, or falls back to terminal emulation. On Unix, this returns
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// the standard [os.Stdin], [os.Stdout] and [os.Stderr].
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func StdStreams() (stdIn io.ReadCloser, stdOut, stdErr io.Writer) {
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return os.Stdin, os.Stdout, os.Stderr
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return stdStreams()
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}
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// GetFdInfo returns the file descriptor for an os.File and indicates whether the file represents a terminal.
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func GetFdInfo(in interface{}) (uintptr, bool) {
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var inFd uintptr
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var isTerminalIn bool
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if file, ok := in.(*os.File); ok {
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inFd = file.Fd()
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isTerminalIn = IsTerminal(inFd)
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}
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return inFd, isTerminalIn
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func GetFdInfo(in interface{}) (fd uintptr, isTerminal bool) {
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return getFdInfo(in)
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}
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// GetWinsize returns the window size based on the specified file descriptor.
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func GetWinsize(fd uintptr) (*Winsize, error) {
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return getWinsize(fd)
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}
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// SetWinsize tries to set the specified window size for the specified file
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// descriptor. It is only implemented on Unix, and returns an error on Windows.
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func SetWinsize(fd uintptr, ws *Winsize) error {
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return setWinsize(fd, ws)
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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 uintptr) bool {
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_, err := tcget(fd)
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return err == nil
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return isTerminal(fd)
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}
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// RestoreTerminal restores the terminal connected to the given file descriptor
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// to a previous state.
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func RestoreTerminal(fd uintptr, state *State) error {
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if state == nil {
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return ErrInvalidState
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}
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return tcset(fd, &state.termios)
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return restoreTerminal(fd, state)
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}
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// SaveState saves the state of the terminal connected to the given file descriptor.
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func SaveState(fd uintptr) (*State, error) {
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termios, err := tcget(fd)
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if err != nil {
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return nil, err
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}
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return &State{termios: *termios}, nil
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return saveState(fd)
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}
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// DisableEcho applies the specified state to the terminal connected to the file
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// descriptor, with echo disabled.
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func DisableEcho(fd uintptr, state *State) error {
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newState := state.termios
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newState.Lflag &^= unix.ECHO
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if err := tcset(fd, &newState); err != nil {
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return err
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}
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handleInterrupt(fd, state)
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return nil
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return disableEcho(fd, state)
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}
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// SetRawTerminal puts the terminal connected to the given file descriptor into
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// raw mode and returns the previous state. On UNIX, this puts both the input
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// and output into raw mode. On Windows, it only puts the input into raw mode.
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func SetRawTerminal(fd uintptr) (*State, error) {
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oldState, err := MakeRaw(fd)
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if err != nil {
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return nil, err
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}
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handleInterrupt(fd, oldState)
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return oldState, err
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// raw mode and returns the previous state. On UNIX, this is the equivalent of
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// [MakeRaw], and puts both the input and output into raw mode. On Windows, it
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// only puts the input into raw mode.
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func SetRawTerminal(fd uintptr) (previousState *State, err error) {
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return setRawTerminal(fd)
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}
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// SetRawTerminalOutput puts the output of terminal connected to the given file
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// descriptor into raw mode. On UNIX, this does nothing and returns nil for the
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// state. On Windows, it disables LF -> CRLF translation.
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func SetRawTerminalOutput(fd uintptr) (*State, error) {
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return nil, nil
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func SetRawTerminalOutput(fd uintptr) (previousState *State, err error) {
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return setRawTerminalOutput(fd)
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}
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func handleInterrupt(fd uintptr, state *State) {
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sigchan := make(chan os.Signal, 1)
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signal.Notify(sigchan, os.Interrupt)
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go func() {
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for range sigchan {
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// quit cleanly and the new terminal item is on a new line
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fmt.Println()
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signal.Stop(sigchan)
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close(sigchan)
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RestoreTerminal(fd, state)
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os.Exit(1)
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}
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}()
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// MakeRaw puts the terminal (Windows Console) connected to the
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// given file descriptor into raw mode and returns the previous state of
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// the terminal so that it can be restored.
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func MakeRaw(fd uintptr) (previousState *State, err error) {
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return makeRaw(fd)
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}
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@ -0,0 +1,98 @@
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//go:build !windows
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// +build !windows
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package term
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import (
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"errors"
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"io"
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"os"
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"golang.org/x/sys/unix"
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)
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// ErrInvalidState is returned if the state of the terminal is invalid.
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//
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// Deprecated: ErrInvalidState is no longer used.
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var ErrInvalidState = errors.New("Invalid terminal state")
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// terminalState holds the platform-specific state / console mode for the terminal.
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type terminalState struct {
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termios unix.Termios
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}
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func stdStreams() (stdIn io.ReadCloser, stdOut, stdErr io.Writer) {
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return os.Stdin, os.Stdout, os.Stderr
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}
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func getFdInfo(in interface{}) (uintptr, bool) {
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var inFd uintptr
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var isTerminalIn bool
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if file, ok := in.(*os.File); ok {
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inFd = file.Fd()
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isTerminalIn = isTerminal(inFd)
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}
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return inFd, isTerminalIn
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}
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func getWinsize(fd uintptr) (*Winsize, error) {
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uws, err := unix.IoctlGetWinsize(int(fd), unix.TIOCGWINSZ)
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ws := &Winsize{Height: uws.Row, Width: uws.Col, x: uws.Xpixel, y: uws.Ypixel}
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return ws, err
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}
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func setWinsize(fd uintptr, ws *Winsize) error {
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return unix.IoctlSetWinsize(int(fd), unix.TIOCSWINSZ, &unix.Winsize{
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Row: ws.Height,
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Col: ws.Width,
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Xpixel: ws.x,
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Ypixel: ws.y,
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})
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}
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func isTerminal(fd uintptr) bool {
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_, err := tcget(fd)
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return err == nil
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}
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func restoreTerminal(fd uintptr, state *State) error {
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if state == nil {
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return errors.New("invalid terminal state")
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}
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return tcset(fd, &state.termios)
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}
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func saveState(fd uintptr) (*State, error) {
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termios, err := tcget(fd)
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if err != nil {
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return nil, err
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}
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return &State{termios: *termios}, nil
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}
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func disableEcho(fd uintptr, state *State) error {
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newState := state.termios
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newState.Lflag &^= unix.ECHO
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return tcset(fd, &newState)
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}
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func setRawTerminal(fd uintptr) (*State, error) {
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return makeRaw(fd)
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}
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func setRawTerminalOutput(fd uintptr) (*State, error) {
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return nil, nil
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}
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func tcget(fd uintptr) (*unix.Termios, error) {
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p, err := unix.IoctlGetTermios(int(fd), getTermios)
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if err != nil {
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return nil, err
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}
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return p, nil
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}
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func tcset(fd uintptr, p *unix.Termios) error {
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return unix.IoctlSetTermios(int(fd), setTermios, p)
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}
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13
vendor/github.com/moby/term/termios.go → vendor/github.com/moby/term/termios_unix.go
generated
vendored
13
vendor/github.com/moby/term/termios.go → vendor/github.com/moby/term/termios_unix.go
generated
vendored
@ -0,0 +1,37 @@
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package term
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import "golang.org/x/sys/windows"
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func makeRaw(fd uintptr) (*State, error) {
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state, err := SaveState(fd)
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if err != nil {
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return nil, err
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}
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mode := state.mode
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// See
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// -- https://msdn.microsoft.com/en-us/library/windows/desktop/ms686033(v=vs.85).aspx
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// -- https://msdn.microsoft.com/en-us/library/windows/desktop/ms683462(v=vs.85).aspx
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// Disable these modes
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mode &^= windows.ENABLE_ECHO_INPUT
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mode &^= windows.ENABLE_LINE_INPUT
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mode &^= windows.ENABLE_MOUSE_INPUT
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mode &^= windows.ENABLE_WINDOW_INPUT
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mode &^= windows.ENABLE_PROCESSED_INPUT
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// Enable these modes
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mode |= windows.ENABLE_EXTENDED_FLAGS
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mode |= windows.ENABLE_INSERT_MODE
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mode |= windows.ENABLE_QUICK_EDIT_MODE
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if vtInputSupported {
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mode |= windows.ENABLE_VIRTUAL_TERMINAL_INPUT
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}
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err = windows.SetConsoleMode(windows.Handle(fd), mode)
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if err != nil {
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return nil, err
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}
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return state, nil
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}
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@ -1,21 +0,0 @@
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//go:build !windows
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// +build !windows
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package term
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import (
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"golang.org/x/sys/unix"
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)
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// GetWinsize returns the window size based on the specified file descriptor.
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func GetWinsize(fd uintptr) (*Winsize, error) {
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uws, err := unix.IoctlGetWinsize(int(fd), unix.TIOCGWINSZ)
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ws := &Winsize{Height: uws.Row, Width: uws.Col, x: uws.Xpixel, y: uws.Ypixel}
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return ws, err
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}
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// SetWinsize tries to set the specified window size for the specified file descriptor.
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func SetWinsize(fd uintptr, ws *Winsize) error {
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uws := &unix.Winsize{Row: ws.Height, Col: ws.Width, Xpixel: ws.x, Ypixel: ws.y}
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return unix.IoctlSetWinsize(int(fd), unix.TIOCSWINSZ, uws)
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}
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