Files
abra/vendor/github.com/charmbracelet/x/ansi/mode.go
2025-11-11 14:18:57 +01:00

691 lines
19 KiB
Go

package ansi
import (
"strconv"
"strings"
)
// ModeSetting represents a mode setting.
type ModeSetting byte
// ModeSetting constants.
const (
ModeNotRecognized ModeSetting = iota
ModeSet
ModeReset
ModePermanentlySet
ModePermanentlyReset
)
// IsNotRecognized returns true if the mode is not recognized.
func (m ModeSetting) IsNotRecognized() bool {
return m == ModeNotRecognized
}
// IsSet returns true if the mode is set or permanently set.
func (m ModeSetting) IsSet() bool {
return m == ModeSet || m == ModePermanentlySet
}
// IsReset returns true if the mode is reset or permanently reset.
func (m ModeSetting) IsReset() bool {
return m == ModeReset || m == ModePermanentlyReset
}
// IsPermanentlySet returns true if the mode is permanently set.
func (m ModeSetting) IsPermanentlySet() bool {
return m == ModePermanentlySet
}
// IsPermanentlyReset returns true if the mode is permanently reset.
func (m ModeSetting) IsPermanentlyReset() bool {
return m == ModePermanentlyReset
}
// Mode represents an interface for terminal modes.
// Modes can be set, reset, and requested.
type Mode interface {
Mode() int
}
// SetMode (SM) or (DECSET) returns a sequence to set a mode.
// The mode arguments are a list of modes to set.
//
// If one of the modes is a [DECMode], the function will returns two escape
// sequences.
//
// ANSI format:
//
// CSI Pd ; ... ; Pd h
//
// DEC format:
//
// CSI ? Pd ; ... ; Pd h
//
// See: https://vt100.net/docs/vt510-rm/SM.html
func SetMode(modes ...Mode) string {
return setMode(false, modes...)
}
// SM is an alias for [SetMode].
func SM(modes ...Mode) string {
return SetMode(modes...)
}
// DECSET is an alias for [SetMode].
func DECSET(modes ...Mode) string {
return SetMode(modes...)
}
// ResetMode (RM) or (DECRST) returns a sequence to reset a mode.
// The mode arguments are a list of modes to reset.
//
// If one of the modes is a [DECMode], the function will returns two escape
// sequences.
//
// ANSI format:
//
// CSI Pd ; ... ; Pd l
//
// DEC format:
//
// CSI ? Pd ; ... ; Pd l
//
// See: https://vt100.net/docs/vt510-rm/RM.html
func ResetMode(modes ...Mode) string {
return setMode(true, modes...)
}
// RM is an alias for [ResetMode].
func RM(modes ...Mode) string {
return ResetMode(modes...)
}
// DECRST is an alias for [ResetMode].
func DECRST(modes ...Mode) string {
return ResetMode(modes...)
}
func setMode(reset bool, modes ...Mode) (s string) {
if len(modes) == 0 {
return s
}
cmd := "h"
if reset {
cmd = "l"
}
seq := "\x1b["
if len(modes) == 1 {
switch modes[0].(type) {
case DECMode:
seq += "?"
}
return seq + strconv.Itoa(modes[0].Mode()) + cmd
}
dec := make([]string, 0, len(modes)/2)
ansi := make([]string, 0, len(modes)/2)
for _, m := range modes {
switch m.(type) {
case DECMode:
dec = append(dec, strconv.Itoa(m.Mode()))
case ANSIMode:
ansi = append(ansi, strconv.Itoa(m.Mode()))
}
}
if len(ansi) > 0 {
s += seq + strings.Join(ansi, ";") + cmd
}
if len(dec) > 0 {
s += seq + "?" + strings.Join(dec, ";") + cmd
}
return s
}
// RequestMode (DECRQM) returns a sequence to request a mode from the terminal.
// The terminal responds with a report mode function [DECRPM].
//
// ANSI format:
//
// CSI Pa $ p
//
// DEC format:
//
// CSI ? Pa $ p
//
// See: https://vt100.net/docs/vt510-rm/DECRQM.html
func RequestMode(m Mode) string {
seq := "\x1b["
switch m.(type) {
case DECMode:
seq += "?"
}
return seq + strconv.Itoa(m.Mode()) + "$p"
}
// DECRQM is an alias for [RequestMode].
func DECRQM(m Mode) string {
return RequestMode(m)
}
// ReportMode (DECRPM) returns a sequence that the terminal sends to the host
// in response to a mode request [DECRQM].
//
// ANSI format:
//
// CSI Pa ; Ps ; $ y
//
// DEC format:
//
// CSI ? Pa ; Ps $ y
//
// Where Pa is the mode number, and Ps is the mode value.
//
// 0: Not recognized
// 1: Set
// 2: Reset
// 3: Permanent set
// 4: Permanent reset
//
// See: https://vt100.net/docs/vt510-rm/DECRPM.html
func ReportMode(mode Mode, value ModeSetting) string {
if value > 4 {
value = 0
}
switch mode.(type) {
case DECMode:
return "\x1b[?" + strconv.Itoa(mode.Mode()) + ";" + strconv.Itoa(int(value)) + "$y"
}
return "\x1b[" + strconv.Itoa(mode.Mode()) + ";" + strconv.Itoa(int(value)) + "$y"
}
// DECRPM is an alias for [ReportMode].
func DECRPM(mode Mode, value ModeSetting) string {
return ReportMode(mode, value)
}
// ANSIMode represents an ANSI terminal mode.
type ANSIMode int //nolint:revive
// Mode returns the ANSI mode as an integer.
func (m ANSIMode) Mode() int {
return int(m)
}
// DECMode represents a private DEC terminal mode.
type DECMode int
// Mode returns the DEC mode as an integer.
func (m DECMode) Mode() int {
return int(m)
}
// Keyboard Action Mode (KAM) is a mode that controls locking of the keyboard.
// When the keyboard is locked, it cannot send data to the terminal.
//
// See: https://vt100.net/docs/vt510-rm/KAM.html
const (
ModeKeyboardAction = ANSIMode(2)
KAM = ModeKeyboardAction
SetModeKeyboardAction = "\x1b[2h"
ResetModeKeyboardAction = "\x1b[2l"
RequestModeKeyboardAction = "\x1b[2$p"
)
// Insert/Replace Mode (IRM) is a mode that determines whether characters are
// inserted or replaced when typed.
//
// When enabled, characters are inserted at the cursor position pushing the
// characters to the right. When disabled, characters replace the character at
// the cursor position.
//
// See: https://vt100.net/docs/vt510-rm/IRM.html
const (
ModeInsertReplace = ANSIMode(4)
IRM = ModeInsertReplace
SetModeInsertReplace = "\x1b[4h"
ResetModeInsertReplace = "\x1b[4l"
RequestModeInsertReplace = "\x1b[4$p"
)
// BiDirectional Support Mode (BDSM) is a mode that determines whether the
// terminal supports bidirectional text. When enabled, the terminal supports
// bidirectional text and is set to implicit bidirectional mode. When disabled,
// the terminal does not support bidirectional text.
//
// See ECMA-48 7.2.1.
const (
ModeBiDirectionalSupport = ANSIMode(8)
BDSM = ModeBiDirectionalSupport
SetModeBiDirectionalSupport = "\x1b[8h"
ResetModeBiDirectionalSupport = "\x1b[8l"
RequestModeBiDirectionalSupport = "\x1b[8$p"
)
// Send Receive Mode (SRM) or Local Echo Mode is a mode that determines whether
// the terminal echoes characters back to the host. When enabled, the terminal
// sends characters to the host as they are typed.
//
// See: https://vt100.net/docs/vt510-rm/SRM.html
const (
ModeSendReceive = ANSIMode(12)
ModeLocalEcho = ModeSendReceive
SRM = ModeSendReceive
SetModeSendReceive = "\x1b[12h"
ResetModeSendReceive = "\x1b[12l"
RequestModeSendReceive = "\x1b[12$p"
SetModeLocalEcho = "\x1b[12h"
ResetModeLocalEcho = "\x1b[12l"
RequestModeLocalEcho = "\x1b[12$p"
)
// Line Feed/New Line Mode (LNM) is a mode that determines whether the terminal
// interprets the line feed character as a new line.
//
// When enabled, the terminal interprets the line feed character as a new line.
// When disabled, the terminal interprets the line feed character as a line feed.
//
// A new line moves the cursor to the first position of the next line.
// A line feed moves the cursor down one line without changing the column
// scrolling the screen if necessary.
//
// See: https://vt100.net/docs/vt510-rm/LNM.html
const (
ModeLineFeedNewLine = ANSIMode(20)
LNM = ModeLineFeedNewLine
SetModeLineFeedNewLine = "\x1b[20h"
ResetModeLineFeedNewLine = "\x1b[20l"
RequestModeLineFeedNewLine = "\x1b[20$p"
)
// Cursor Keys Mode (DECCKM) is a mode that determines whether the cursor keys
// send ANSI cursor sequences or application sequences.
//
// See: https://vt100.net/docs/vt510-rm/DECCKM.html
const (
ModeCursorKeys = DECMode(1)
DECCKM = ModeCursorKeys
SetModeCursorKeys = "\x1b[?1h"
ResetModeCursorKeys = "\x1b[?1l"
RequestModeCursorKeys = "\x1b[?1$p"
)
// Origin Mode (DECOM) is a mode that determines whether the cursor moves to the
// home position or the margin position.
//
// See: https://vt100.net/docs/vt510-rm/DECOM.html
const (
ModeOrigin = DECMode(6)
DECOM = ModeOrigin
SetModeOrigin = "\x1b[?6h"
ResetModeOrigin = "\x1b[?6l"
RequestModeOrigin = "\x1b[?6$p"
)
// Auto Wrap Mode (DECAWM) is a mode that determines whether the cursor wraps
// to the next line when it reaches the right margin.
//
// See: https://vt100.net/docs/vt510-rm/DECAWM.html
const (
ModeAutoWrap = DECMode(7)
DECAWM = ModeAutoWrap
SetModeAutoWrap = "\x1b[?7h"
ResetModeAutoWrap = "\x1b[?7l"
RequestModeAutoWrap = "\x1b[?7$p"
)
// X10 Mouse Mode is a mode that determines whether the mouse reports on button
// presses.
//
// The terminal responds with the following encoding:
//
// CSI M CbCxCy
//
// Where Cb is the button-1, where it can be 1, 2, or 3.
// Cx and Cy are the x and y coordinates of the mouse event.
//
// See: https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h2-Mouse-Tracking
const (
ModeMouseX10 = DECMode(9)
SetModeMouseX10 = "\x1b[?9h"
ResetModeMouseX10 = "\x1b[?9l"
RequestModeMouseX10 = "\x1b[?9$p"
)
// Text Cursor Enable Mode (DECTCEM) is a mode that shows/hides the cursor.
//
// See: https://vt100.net/docs/vt510-rm/DECTCEM.html
const (
ModeTextCursorEnable = DECMode(25)
DECTCEM = ModeTextCursorEnable
SetModeTextCursorEnable = "\x1b[?25h"
ResetModeTextCursorEnable = "\x1b[?25l"
RequestModeTextCursorEnable = "\x1b[?25$p"
)
// These are aliases for [SetModeTextCursorEnable] and [ResetModeTextCursorEnable].
const (
ShowCursor = SetModeTextCursorEnable
HideCursor = ResetModeTextCursorEnable
)
// Numeric Keypad Mode (DECNKM) is a mode that determines whether the keypad
// sends application sequences or numeric sequences.
//
// This works like [DECKPAM] and [DECKPNM], but uses different sequences.
//
// See: https://vt100.net/docs/vt510-rm/DECNKM.html
const (
ModeNumericKeypad = DECMode(66)
DECNKM = ModeNumericKeypad
SetModeNumericKeypad = "\x1b[?66h"
ResetModeNumericKeypad = "\x1b[?66l"
RequestModeNumericKeypad = "\x1b[?66$p"
)
// Backarrow Key Mode (DECBKM) is a mode that determines whether the backspace
// key sends a backspace or delete character. Disabled by default.
//
// See: https://vt100.net/docs/vt510-rm/DECBKM.html
const (
ModeBackarrowKey = DECMode(67)
DECBKM = ModeBackarrowKey
SetModeBackarrowKey = "\x1b[?67h"
ResetModeBackarrowKey = "\x1b[?67l"
RequestModeBackarrowKey = "\x1b[?67$p"
)
// Left Right Margin Mode (DECLRMM) is a mode that determines whether the left
// and right margins can be set with [DECSLRM].
//
// See: https://vt100.net/docs/vt510-rm/DECLRMM.html
const (
ModeLeftRightMargin = DECMode(69)
DECLRMM = ModeLeftRightMargin
SetModeLeftRightMargin = "\x1b[?69h"
ResetModeLeftRightMargin = "\x1b[?69l"
RequestModeLeftRightMargin = "\x1b[?69$p"
)
// Normal Mouse Mode is a mode that determines whether the mouse reports on
// button presses and releases. It will also report modifier keys, wheel
// events, and extra buttons.
//
// It uses the same encoding as [ModeMouseX10] with a few differences:
//
// See: https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h2-Mouse-Tracking
const (
ModeMouseNormal = DECMode(1000)
SetModeMouseNormal = "\x1b[?1000h"
ResetModeMouseNormal = "\x1b[?1000l"
RequestModeMouseNormal = "\x1b[?1000$p"
)
// Highlight Mouse Tracking is a mode that determines whether the mouse reports
// on button presses, releases, and highlighted cells.
//
// It uses the same encoding as [ModeMouseNormal] with a few differences:
//
// On highlight events, the terminal responds with the following encoding:
//
// CSI t CxCy
// CSI T CxCyCxCyCxCy
//
// Where the parameters are startx, starty, endx, endy, mousex, and mousey.
const (
ModeMouseHighlight = DECMode(1001)
SetModeMouseHighlight = "\x1b[?1001h"
ResetModeMouseHighlight = "\x1b[?1001l"
RequestModeMouseHighlight = "\x1b[?1001$p"
)
// VT Hilite Mouse Tracking is a mode that determines whether the mouse reports on
// button presses, releases, and highlighted cells.
//
// See: https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h2-Mouse-Tracking
//
// Button Event Mouse Tracking is essentially the same as [ModeMouseNormal],
// but it also reports button-motion events when a button is pressed.
//
// See: https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h2-Mouse-Tracking
const (
ModeMouseButtonEvent = DECMode(1002)
SetModeMouseButtonEvent = "\x1b[?1002h"
ResetModeMouseButtonEvent = "\x1b[?1002l"
RequestModeMouseButtonEvent = "\x1b[?1002$p"
)
// Any Event Mouse Tracking is the same as [ModeMouseButtonEvent], except that
// all motion events are reported even if no mouse buttons are pressed.
//
// See: https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h2-Mouse-Tracking
const (
ModeMouseAnyEvent = DECMode(1003)
SetModeMouseAnyEvent = "\x1b[?1003h"
ResetModeMouseAnyEvent = "\x1b[?1003l"
RequestModeMouseAnyEvent = "\x1b[?1003$p"
)
// Focus Event Mode is a mode that determines whether the terminal reports focus
// and blur events.
//
// The terminal sends the following encoding:
//
// CSI I // Focus In
// CSI O // Focus Out
//
// See: https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h2-Focus-Tracking
const (
ModeFocusEvent = DECMode(1004)
SetModeFocusEvent = "\x1b[?1004h"
ResetModeFocusEvent = "\x1b[?1004l"
RequestModeFocusEvent = "\x1b[?1004$p"
)
// SGR Extended Mouse Mode is a mode that changes the mouse tracking encoding
// to use SGR parameters.
//
// The terminal responds with the following encoding:
//
// CSI < Cb ; Cx ; Cy M
//
// Where Cb is the same as [ModeMouseNormal], and Cx and Cy are the x and y.
//
// See: https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h2-Mouse-Tracking
const (
ModeMouseExtSgr = DECMode(1006)
SetModeMouseExtSgr = "\x1b[?1006h"
ResetModeMouseExtSgr = "\x1b[?1006l"
RequestModeMouseExtSgr = "\x1b[?1006$p"
)
// UTF-8 Extended Mouse Mode is a mode that changes the mouse tracking encoding
// to use UTF-8 parameters.
//
// See: https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h2-Mouse-Tracking
const (
ModeMouseExtUtf8 = DECMode(1005)
SetModeMouseExtUtf8 = "\x1b[?1005h"
ResetModeMouseExtUtf8 = "\x1b[?1005l"
RequestModeMouseExtUtf8 = "\x1b[?1005$p"
)
// URXVT Extended Mouse Mode is a mode that changes the mouse tracking encoding
// to use an alternate encoding.
//
// See: https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h2-Mouse-Tracking
const (
ModeMouseExtUrxvt = DECMode(1015)
SetModeMouseExtUrxvt = "\x1b[?1015h"
ResetModeMouseExtUrxvt = "\x1b[?1015l"
RequestModeMouseExtUrxvt = "\x1b[?1015$p"
)
// SGR Pixel Extended Mouse Mode is a mode that changes the mouse tracking
// encoding to use SGR parameters with pixel coordinates.
//
// This is similar to [ModeMouseExtSgr], but also reports pixel coordinates.
//
// See: https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h2-Mouse-Tracking
const (
ModeMouseExtSgrPixel = DECMode(1016)
SetModeMouseExtSgrPixel = "\x1b[?1016h"
ResetModeMouseExtSgrPixel = "\x1b[?1016l"
RequestModeMouseExtSgrPixel = "\x1b[?1016$p"
)
// Alternate Screen Mode is a mode that determines whether the alternate screen
// buffer is active. When this mode is enabled, the alternate screen buffer is
// cleared.
//
// See: https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h2-The-Alternate-Screen-Buffer
const (
ModeAltScreen = DECMode(1047)
SetModeAltScreen = "\x1b[?1047h"
ResetModeAltScreen = "\x1b[?1047l"
RequestModeAltScreen = "\x1b[?1047$p"
)
// Save Cursor Mode is a mode that saves the cursor position.
// This is equivalent to [SaveCursor] and [RestoreCursor].
//
// See: https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h2-The-Alternate-Screen-Buffer
const (
ModeSaveCursor = DECMode(1048)
SetModeSaveCursor = "\x1b[?1048h"
ResetModeSaveCursor = "\x1b[?1048l"
RequestModeSaveCursor = "\x1b[?1048$p"
)
// Alternate Screen Save Cursor Mode is a mode that saves the cursor position as in
// [ModeSaveCursor], switches to the alternate screen buffer as in [ModeAltScreen],
// and clears the screen on switch.
//
// See: https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h2-The-Alternate-Screen-Buffer
const (
ModeAltScreenSaveCursor = DECMode(1049)
SetModeAltScreenSaveCursor = "\x1b[?1049h"
ResetModeAltScreenSaveCursor = "\x1b[?1049l"
RequestModeAltScreenSaveCursor = "\x1b[?1049$p"
)
// Bracketed Paste Mode is a mode that determines whether pasted text is
// bracketed with escape sequences.
//
// See: https://cirw.in/blog/bracketed-paste
// See: https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h2-Bracketed-Paste-Mode
const (
ModeBracketedPaste = DECMode(2004)
SetModeBracketedPaste = "\x1b[?2004h"
ResetModeBracketedPaste = "\x1b[?2004l"
RequestModeBracketedPaste = "\x1b[?2004$p"
)
// Synchronized Output Mode is a mode that determines whether output is
// synchronized with the terminal.
//
// See: https://gist.github.com/christianparpart/d8a62cc1ab659194337d73e399004036
const (
ModeSynchronizedOutput = DECMode(2026)
SetModeSynchronizedOutput = "\x1b[?2026h"
ResetModeSynchronizedOutput = "\x1b[?2026l"
RequestModeSynchronizedOutput = "\x1b[?2026$p"
)
// Unicode Core Mode is a mode that determines whether the terminal should use
// Unicode grapheme clustering to calculate the width of glyphs for each
// terminal cell.
//
// See: https://github.com/contour-terminal/terminal-unicode-core
const (
ModeUnicodeCore = DECMode(2027)
SetModeUnicodeCore = "\x1b[?2027h"
ResetModeUnicodeCore = "\x1b[?2027l"
RequestModeUnicodeCore = "\x1b[?2027$p"
)
//
// ModeLightDark is a mode that enables reporting the operating system's color
// scheme (light or dark) preference. It reports the color scheme as a [DSR]
// and [LightDarkReport] escape sequences encoded as follows:
//
// CSI ? 997 ; 1 n for dark mode
// CSI ? 997 ; 2 n for light mode
//
// The color preference can also be requested via the following [DSR] and
// [RequestLightDarkReport] escape sequences:
//
// CSI ? 996 n
//
// See: https://contour-terminal.org/vt-extensions/color-palette-update-notifications/
const (
ModeLightDark = DECMode(2031)
SetModeLightDark = "\x1b[?2031h"
ResetModeLightDark = "\x1b[?2031l"
RequestModeLightDark = "\x1b[?2031$p"
)
// ModeInBandResize is a mode that reports terminal resize events as escape
// sequences. This is useful for systems that do not support [SIGWINCH] like
// Windows.
//
// The terminal then sends the following encoding:
//
// CSI 48 ; cellsHeight ; cellsWidth ; pixelHeight ; pixelWidth t
//
// See: https://gist.github.com/rockorager/e695fb2924d36b2bcf1fff4a3704bd83
const (
ModeInBandResize = DECMode(2048)
SetModeInBandResize = "\x1b[?2048h"
ResetModeInBandResize = "\x1b[?2048l"
RequestModeInBandResize = "\x1b[?2048$p"
)
// Win32Input is a mode that determines whether input is processed by the
// Win32 console and Conpty.
//
// See: https://github.com/microsoft/terminal/blob/main/doc/specs/%234999%20-%20Improved%20keyboard%20handling%20in%20Conpty.md
const (
ModeWin32Input = DECMode(9001)
SetModeWin32Input = "\x1b[?9001h"
ResetModeWin32Input = "\x1b[?9001l"
RequestModeWin32Input = "\x1b[?9001$p"
)