Documentation

Index

Constants

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Variables

This section is empty.

Functions

func GetSize

func GetSize(fd uintptr) *remotecommand.TerminalSize

    GetSize returns the current size of the terminal associated with fd.

    func IsTerminal

    func IsTerminal(i interface{}) bool

      IsTerminal returns whether the passed object is a terminal or not

      func NewMaxWidthWriter

      func NewMaxWidthWriter(w io.Writer, maxWidth uint) io.Writer

        NewMaxWidthWriter is a Writer that supports a limit of characters on every line, but doesn't do any word wrapping automatically.

        func NewPunchCardWriter

        func NewPunchCardWriter(w io.Writer) io.Writer

          NewPunchCardWriter is a NewWordWrapWriter that limits the line width to 80 columns.

          func NewResponsiveWriter

          func NewResponsiveWriter(w io.Writer) io.Writer

            NewResponsiveWriter creates a Writer that detects the column width of the terminal we are in, and adjusts every line width to fit and use recommended terminal sizes for better readability. Does proper word wrapping automatically.

            if terminal width >= 120 columns		use 120 columns
            if terminal width >= 100 columns		use 100 columns
            if terminal width >=  80 columns		use  80 columns
            

            In case we're not in a terminal or if it's smaller than 80 columns width, doesn't do any wrapping.

            func NewWordWrapWriter

            func NewWordWrapWriter(w io.Writer, limit uint) io.Writer

              NewWordWrapWriter is a Writer that supports a limit of characters on every line and does auto word wrapping that respects that limit.

              Types

              type SafeFunc

              type SafeFunc func() error

                SafeFunc is a function to be invoked by TTY.

                type TTY

                type TTY struct {
                	// In is a reader representing stdin. It is a required field.
                	In io.Reader
                	// Out is a writer representing stdout. It must be set to support terminal resizing. It is an
                	// optional field.
                	Out io.Writer
                	// Raw is true if the terminal should be set raw.
                	Raw bool
                	// TryDev indicates the TTY should try to open /dev/tty if the provided input
                	// is not a file descriptor.
                	TryDev bool
                	// Parent is an optional interrupt handler provided to this function - if provided
                	// it will be invoked after the terminal state is restored. If it is not provided,
                	// a signal received during the TTY will result in os.Exit(0) being invoked.
                	Parent *interrupt.Handler
                	// contains filtered or unexported fields
                }

                  TTY helps invoke a function and preserve the state of the terminal, even if the process is terminated during execution. It also provides support for terminal resizing for remote command execution/attachment.

                  func (TTY) GetSize

                  func (t TTY) GetSize() *remotecommand.TerminalSize

                    GetSize returns the current size of the user's terminal. If it isn't a terminal, nil is returned.

                    func (TTY) IsTerminalIn

                    func (t TTY) IsTerminalIn() bool

                      IsTerminalIn returns true if t.In is a terminal. Does not check /dev/tty even if TryDev is set.

                      func (TTY) IsTerminalOut

                      func (t TTY) IsTerminalOut() bool

                        IsTerminalOut returns true if t.Out is a terminal. Does not check /dev/tty even if TryDev is set.

                        func (*TTY) MonitorSize

                        func (t *TTY) MonitorSize(initialSizes ...*remotecommand.TerminalSize) remotecommand.TerminalSizeQueue

                          MonitorSize monitors the terminal's size. It returns a TerminalSizeQueue primed with initialSizes, or nil if there's no TTY present.

                          func (TTY) Safe

                          func (t TTY) Safe(fn SafeFunc) error

                            Safe invokes the provided function and will attempt to ensure that when the function returns (or a termination signal is sent) that the terminal state is reset to the condition it was in prior to the function being invoked. If t.Raw is true the terminal will be put into raw mode prior to calling the function. If the input file descriptor is not a TTY and TryDev is true, the /dev/tty file will be opened (if available).