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Diffstat (limited to 'vendor/github.com/nsf/termbox-go/termbox.go')
-rw-r--r--vendor/github.com/nsf/termbox-go/termbox.go529
1 files changed, 0 insertions, 529 deletions
diff --git a/vendor/github.com/nsf/termbox-go/termbox.go b/vendor/github.com/nsf/termbox-go/termbox.go
deleted file mode 100644
index fbe4c3de..00000000
--- a/vendor/github.com/nsf/termbox-go/termbox.go
+++ /dev/null
@@ -1,529 +0,0 @@
-// +build !windows
-
-package termbox
-
-import "unicode/utf8"
-import "bytes"
-import "syscall"
-import "unsafe"
-import "strings"
-import "strconv"
-import "os"
-import "io"
-
-// private API
-
-const (
- t_enter_ca = iota
- t_exit_ca
- t_show_cursor
- t_hide_cursor
- t_clear_screen
- t_sgr0
- t_underline
- t_bold
- t_blink
- t_reverse
- t_enter_keypad
- t_exit_keypad
- t_enter_mouse
- t_exit_mouse
- t_max_funcs
-)
-
-const (
- coord_invalid = -2
- attr_invalid = Attribute(0xFFFF)
-)
-
-type input_event struct {
- data []byte
- err error
-}
-
-type extract_event_res int
-
-const (
- event_not_extracted extract_event_res = iota
- event_extracted
- esc_wait
-)
-
-var (
- // term specific sequences
- keys []string
- funcs []string
-
- // termbox inner state
- orig_tios syscall_Termios
- back_buffer cellbuf
- front_buffer cellbuf
- termw int
- termh int
- input_mode = InputEsc
- output_mode = OutputNormal
- out *os.File
- in int
- lastfg = attr_invalid
- lastbg = attr_invalid
- lastx = coord_invalid
- lasty = coord_invalid
- cursor_x = cursor_hidden
- cursor_y = cursor_hidden
- foreground = ColorDefault
- background = ColorDefault
- inbuf = make([]byte, 0, 64)
- outbuf bytes.Buffer
- sigwinch = make(chan os.Signal, 1)
- sigio = make(chan os.Signal, 1)
- quit = make(chan int)
- input_comm = make(chan input_event)
- interrupt_comm = make(chan struct{})
- intbuf = make([]byte, 0, 16)
-
- // grayscale indexes
- grayscale = []Attribute{
- 0, 17, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244,
- 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 232,
- }
-)
-
-func write_cursor(x, y int) {
- outbuf.WriteString("\033[")
- outbuf.Write(strconv.AppendUint(intbuf, uint64(y+1), 10))
- outbuf.WriteString(";")
- outbuf.Write(strconv.AppendUint(intbuf, uint64(x+1), 10))
- outbuf.WriteString("H")
-}
-
-func write_sgr_fg(a Attribute) {
- switch output_mode {
- case Output256, Output216, OutputGrayscale:
- outbuf.WriteString("\033[38;5;")
- outbuf.Write(strconv.AppendUint(intbuf, uint64(a-1), 10))
- outbuf.WriteString("m")
- default:
- outbuf.WriteString("\033[3")
- outbuf.Write(strconv.AppendUint(intbuf, uint64(a-1), 10))
- outbuf.WriteString("m")
- }
-}
-
-func write_sgr_bg(a Attribute) {
- switch output_mode {
- case Output256, Output216, OutputGrayscale:
- outbuf.WriteString("\033[48;5;")
- outbuf.Write(strconv.AppendUint(intbuf, uint64(a-1), 10))
- outbuf.WriteString("m")
- default:
- outbuf.WriteString("\033[4")
- outbuf.Write(strconv.AppendUint(intbuf, uint64(a-1), 10))
- outbuf.WriteString("m")
- }
-}
-
-func write_sgr(fg, bg Attribute) {
- switch output_mode {
- case Output256, Output216, OutputGrayscale:
- outbuf.WriteString("\033[38;5;")
- outbuf.Write(strconv.AppendUint(intbuf, uint64(fg-1), 10))
- outbuf.WriteString("m")
- outbuf.WriteString("\033[48;5;")
- outbuf.Write(strconv.AppendUint(intbuf, uint64(bg-1), 10))
- outbuf.WriteString("m")
- default:
- outbuf.WriteString("\033[3")
- outbuf.Write(strconv.AppendUint(intbuf, uint64(fg-1), 10))
- outbuf.WriteString(";4")
- outbuf.Write(strconv.AppendUint(intbuf, uint64(bg-1), 10))
- outbuf.WriteString("m")
- }
-}
-
-type winsize struct {
- rows uint16
- cols uint16
- xpixels uint16
- ypixels uint16
-}
-
-func get_term_size(fd uintptr) (int, int) {
- var sz winsize
- _, _, _ = syscall.Syscall(syscall.SYS_IOCTL,
- fd, uintptr(syscall.TIOCGWINSZ), uintptr(unsafe.Pointer(&sz)))
- return int(sz.cols), int(sz.rows)
-}
-
-func send_attr(fg, bg Attribute) {
- if fg == lastfg && bg == lastbg {
- return
- }
-
- outbuf.WriteString(funcs[t_sgr0])
-
- var fgcol, bgcol Attribute
-
- switch output_mode {
- case Output256:
- fgcol = fg & 0x1FF
- bgcol = bg & 0x1FF
- case Output216:
- fgcol = fg & 0xFF
- bgcol = bg & 0xFF
- if fgcol > 216 {
- fgcol = ColorDefault
- }
- if bgcol > 216 {
- bgcol = ColorDefault
- }
- if fgcol != ColorDefault {
- fgcol += 0x10
- }
- if bgcol != ColorDefault {
- bgcol += 0x10
- }
- case OutputGrayscale:
- fgcol = fg & 0x1F
- bgcol = bg & 0x1F
- if fgcol > 26 {
- fgcol = ColorDefault
- }
- if bgcol > 26 {
- bgcol = ColorDefault
- }
- if fgcol != ColorDefault {
- fgcol = grayscale[fgcol]
- }
- if bgcol != ColorDefault {
- bgcol = grayscale[bgcol]
- }
- default:
- fgcol = fg & 0x0F
- bgcol = bg & 0x0F
- }
-
- if fgcol != ColorDefault {
- if bgcol != ColorDefault {
- write_sgr(fgcol, bgcol)
- } else {
- write_sgr_fg(fgcol)
- }
- } else if bgcol != ColorDefault {
- write_sgr_bg(bgcol)
- }
-
- if fg&AttrBold != 0 {
- outbuf.WriteString(funcs[t_bold])
- }
- if bg&AttrBold != 0 {
- outbuf.WriteString(funcs[t_blink])
- }
- if fg&AttrUnderline != 0 {
- outbuf.WriteString(funcs[t_underline])
- }
- if fg&AttrReverse|bg&AttrReverse != 0 {
- outbuf.WriteString(funcs[t_reverse])
- }
-
- lastfg, lastbg = fg, bg
-}
-
-func send_char(x, y int, ch rune) {
- var buf [8]byte
- n := utf8.EncodeRune(buf[:], ch)
- if x-1 != lastx || y != lasty {
- write_cursor(x, y)
- }
- lastx, lasty = x, y
- outbuf.Write(buf[:n])
-}
-
-func flush() error {
- _, err := io.Copy(out, &outbuf)
- outbuf.Reset()
- return err
-}
-
-func send_clear() error {
- send_attr(foreground, background)
- outbuf.WriteString(funcs[t_clear_screen])
- if !is_cursor_hidden(cursor_x, cursor_y) {
- write_cursor(cursor_x, cursor_y)
- }
-
- // we need to invalidate cursor position too and these two vars are
- // used only for simple cursor positioning optimization, cursor
- // actually may be in the correct place, but we simply discard
- // optimization once and it gives us simple solution for the case when
- // cursor moved
- lastx = coord_invalid
- lasty = coord_invalid
-
- return flush()
-}
-
-func update_size_maybe() error {
- w, h := get_term_size(out.Fd())
- if w != termw || h != termh {
- termw, termh = w, h
- back_buffer.resize(termw, termh)
- front_buffer.resize(termw, termh)
- front_buffer.clear()
- return send_clear()
- }
- return nil
-}
-
-func tcsetattr(fd uintptr, termios *syscall_Termios) error {
- r, _, e := syscall.Syscall(syscall.SYS_IOCTL,
- fd, uintptr(syscall_TCSETS), uintptr(unsafe.Pointer(termios)))
- if r != 0 {
- return os.NewSyscallError("SYS_IOCTL", e)
- }
- return nil
-}
-
-func tcgetattr(fd uintptr, termios *syscall_Termios) error {
- r, _, e := syscall.Syscall(syscall.SYS_IOCTL,
- fd, uintptr(syscall_TCGETS), uintptr(unsafe.Pointer(termios)))
- if r != 0 {
- return os.NewSyscallError("SYS_IOCTL", e)
- }
- return nil
-}
-
-func parse_mouse_event(event *Event, buf string) (int, bool) {
- if strings.HasPrefix(buf, "\033[M") && len(buf) >= 6 {
- // X10 mouse encoding, the simplest one
- // \033 [ M Cb Cx Cy
- b := buf[3] - 32
- switch b & 3 {
- case 0:
- if b&64 != 0 {
- event.Key = MouseWheelUp
- } else {
- event.Key = MouseLeft
- }
- case 1:
- if b&64 != 0 {
- event.Key = MouseWheelDown
- } else {
- event.Key = MouseMiddle
- }
- case 2:
- event.Key = MouseRight
- case 3:
- event.Key = MouseRelease
- default:
- return 6, false
- }
- event.Type = EventMouse // KeyEvent by default
- if b&32 != 0 {
- event.Mod |= ModMotion
- }
-
- // the coord is 1,1 for upper left
- event.MouseX = int(buf[4]) - 1 - 32
- event.MouseY = int(buf[5]) - 1 - 32
- return 6, true
- } else if strings.HasPrefix(buf, "\033[<") || strings.HasPrefix(buf, "\033[") {
- // xterm 1006 extended mode or urxvt 1015 extended mode
- // xterm: \033 [ < Cb ; Cx ; Cy (M or m)
- // urxvt: \033 [ Cb ; Cx ; Cy M
-
- // find the first M or m, that's where we stop
- mi := strings.IndexAny(buf, "Mm")
- if mi == -1 {
- return 0, false
- }
-
- // whether it's a capital M or not
- isM := buf[mi] == 'M'
-
- // whether it's urxvt or not
- isU := false
-
- // buf[2] is safe here, because having M or m found means we have at
- // least 3 bytes in a string
- if buf[2] == '<' {
- buf = buf[3:mi]
- } else {
- isU = true
- buf = buf[2:mi]
- }
-
- s1 := strings.Index(buf, ";")
- s2 := strings.LastIndex(buf, ";")
- // not found or only one ';'
- if s1 == -1 || s2 == -1 || s1 == s2 {
- return 0, false
- }
-
- n1, err := strconv.ParseInt(buf[0:s1], 10, 64)
- if err != nil {
- return 0, false
- }
- n2, err := strconv.ParseInt(buf[s1+1:s2], 10, 64)
- if err != nil {
- return 0, false
- }
- n3, err := strconv.ParseInt(buf[s2+1:], 10, 64)
- if err != nil {
- return 0, false
- }
-
- // on urxvt, first number is encoded exactly as in X10, but we need to
- // make it zero-based, on xterm it is zero-based already
- if isU {
- n1 -= 32
- }
- switch n1 & 3 {
- case 0:
- if n1&64 != 0 {
- event.Key = MouseWheelUp
- } else {
- event.Key = MouseLeft
- }
- case 1:
- if n1&64 != 0 {
- event.Key = MouseWheelDown
- } else {
- event.Key = MouseMiddle
- }
- case 2:
- event.Key = MouseRight
- case 3:
- event.Key = MouseRelease
- default:
- return mi + 1, false
- }
- if !isM {
- // on xterm mouse release is signaled by lowercase m
- event.Key = MouseRelease
- }
-
- event.Type = EventMouse // KeyEvent by default
- if n1&32 != 0 {
- event.Mod |= ModMotion
- }
-
- event.MouseX = int(n2) - 1
- event.MouseY = int(n3) - 1
- return mi + 1, true
- }
-
- return 0, false
-}
-
-func parse_escape_sequence(event *Event, buf []byte) (int, bool) {
- bufstr := string(buf)
- for i, key := range keys {
- if strings.HasPrefix(bufstr, key) {
- event.Ch = 0
- event.Key = Key(0xFFFF - i)
- return len(key), true
- }
- }
-
- // if none of the keys match, let's try mouse sequences
- return parse_mouse_event(event, bufstr)
-}
-
-func extract_raw_event(data []byte, event *Event) bool {
- if len(inbuf) == 0 {
- return false
- }
-
- n := len(data)
- if n == 0 {
- return false
- }
-
- n = copy(data, inbuf)
- copy(inbuf, inbuf[n:])
- inbuf = inbuf[:len(inbuf)-n]
-
- event.N = n
- event.Type = EventRaw
- return true
-}
-
-func extract_event(inbuf []byte, event *Event, allow_esc_wait bool) extract_event_res {
- if len(inbuf) == 0 {
- event.N = 0
- return event_not_extracted
- }
-
- if inbuf[0] == '\033' {
- // possible escape sequence
- if n, ok := parse_escape_sequence(event, inbuf); n != 0 {
- event.N = n
- if ok {
- return event_extracted
- } else {
- return event_not_extracted
- }
- }
-
- // possible partially read escape sequence; trigger a wait if appropriate
- if enable_wait_for_escape_sequence() && allow_esc_wait {
- event.N = 0
- return esc_wait
- }
-
- // it's not escape sequence, then it's Alt or Esc, check input_mode
- switch {
- case input_mode&InputEsc != 0:
- // if we're in escape mode, fill Esc event, pop buffer, return success
- event.Ch = 0
- event.Key = KeyEsc
- event.Mod = 0
- event.N = 1
- return event_extracted
- case input_mode&InputAlt != 0:
- // if we're in alt mode, set Alt modifier to event and redo parsing
- event.Mod = ModAlt
- status := extract_event(inbuf[1:], event, false)
- if status == event_extracted {
- event.N++
- } else {
- event.N = 0
- }
- return status
- default:
- panic("unreachable")
- }
- }
-
- // if we're here, this is not an escape sequence and not an alt sequence
- // so, it's a FUNCTIONAL KEY or a UNICODE character
-
- // first of all check if it's a functional key
- if Key(inbuf[0]) <= KeySpace || Key(inbuf[0]) == KeyBackspace2 {
- // fill event, pop buffer, return success
- event.Ch = 0
- event.Key = Key(inbuf[0])
- event.N = 1
- return event_extracted
- }
-
- // the only possible option is utf8 rune
- if r, n := utf8.DecodeRune(inbuf); r != utf8.RuneError {
- event.Ch = r
- event.Key = 0
- event.N = n
- return event_extracted
- }
-
- return event_not_extracted
-}
-
-func fcntl(fd int, cmd int, arg int) (val int, err error) {
- r, _, e := syscall.Syscall(syscall.SYS_FCNTL, uintptr(fd), uintptr(cmd),
- uintptr(arg))
- val = int(r)
- if e != 0 {
- err = e
- }
- return
-}
generated by cgit (git 2.34.1) at 2024-11-08 11:34:53 +0000