mirror of
https://github.com/junegunn/fzf.git
synced 2025-12-28 15:06:55 +08:00
529 lines
10 KiB
Go
529 lines
10 KiB
Go
// +build !windows
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// +build !tcell
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package tui
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/*
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#include <ncurses.h>
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#include <locale.h>
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#cgo !static LDFLAGS: -lncurses
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#cgo static LDFLAGS: -l:libncursesw.a -l:libtinfo.a -l:libgpm.a -ldl
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#cgo android static LDFLAGS: -l:libncurses.a -fPIE -march=armv7-a -mfpu=neon -mhard-float -Wl,--no-warn-mismatch
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SCREEN *c_newterm () {
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return newterm(NULL, stderr, stdin);
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}
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*/
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import "C"
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import (
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"fmt"
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"os"
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"strings"
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"syscall"
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"time"
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"unicode/utf8"
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)
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type ColorPair int16
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type Attr C.int
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type WindowImpl C.WINDOW
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const (
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Bold = C.A_BOLD
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Dim = C.A_DIM
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Blink = C.A_BLINK
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Reverse = C.A_REVERSE
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Underline = C.A_UNDERLINE
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)
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const (
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AttrRegular Attr = 0
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)
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// Pallete
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const (
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ColDefault ColorPair = iota
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ColNormal
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ColPrompt
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ColMatch
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ColCurrent
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ColCurrentMatch
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ColSpinner
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ColInfo
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ColCursor
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ColSelected
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ColHeader
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ColBorder
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ColUser // Should be the last entry
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)
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var (
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_in *os.File
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_screen *C.SCREEN
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_colorMap map[int]ColorPair
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_colorFn func(ColorPair, Attr) C.int
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)
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func init() {
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_colorMap = make(map[int]ColorPair)
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}
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func (a Attr) Merge(b Attr) Attr {
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return a | b
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}
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func DefaultTheme() *ColorTheme {
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if C.tigetnum(C.CString("colors")) >= 256 {
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return Dark256
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}
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return Default16
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}
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func Init(theme *ColorTheme, black bool, mouse bool) {
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{
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in, err := os.OpenFile("/dev/tty", syscall.O_RDONLY, 0)
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if err != nil {
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panic("Failed to open /dev/tty")
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}
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_in = in
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// Break STDIN
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// syscall.Dup2(int(in.Fd()), int(os.Stdin.Fd()))
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}
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C.setlocale(C.LC_ALL, C.CString(""))
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_screen = C.c_newterm()
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if _screen == nil {
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fmt.Println("Invalid $TERM: " + os.Getenv("TERM"))
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os.Exit(2)
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}
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C.set_term(_screen)
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if mouse {
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C.mousemask(C.ALL_MOUSE_EVENTS, nil)
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}
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C.noecho()
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C.raw() // stty dsusp undef
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_color = theme != nil
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if _color {
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C.start_color()
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InitTheme(theme, black)
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initPairs(theme)
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C.bkgd(C.chtype(C.COLOR_PAIR(C.int(ColNormal))))
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_colorFn = attrColored
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} else {
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_colorFn = attrMono
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}
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}
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func initPairs(theme *ColorTheme) {
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C.assume_default_colors(C.int(theme.Fg), C.int(theme.Bg))
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initPair := func(group ColorPair, fg Color, bg Color) {
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C.init_pair(C.short(group), C.short(fg), C.short(bg))
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}
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initPair(ColNormal, theme.Fg, theme.Bg)
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initPair(ColPrompt, theme.Prompt, theme.Bg)
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initPair(ColMatch, theme.Match, theme.Bg)
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initPair(ColCurrent, theme.Current, theme.DarkBg)
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initPair(ColCurrentMatch, theme.CurrentMatch, theme.DarkBg)
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initPair(ColSpinner, theme.Spinner, theme.Bg)
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initPair(ColInfo, theme.Info, theme.Bg)
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initPair(ColCursor, theme.Cursor, theme.DarkBg)
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initPair(ColSelected, theme.Selected, theme.DarkBg)
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initPair(ColHeader, theme.Header, theme.Bg)
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initPair(ColBorder, theme.Border, theme.Bg)
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}
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func Pause() {
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C.endwin()
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}
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func Resume() bool {
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return false
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}
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func Close() {
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C.endwin()
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C.delscreen(_screen)
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}
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func NewWindow(top int, left int, width int, height int, border bool) *Window {
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win := C.newwin(C.int(height), C.int(width), C.int(top), C.int(left))
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if _color {
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C.wbkgd(win, C.chtype(C.COLOR_PAIR(C.int(ColNormal))))
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}
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if border {
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attr := _colorFn(ColBorder, 0)
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C.wattron(win, attr)
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C.box(win, 0, 0)
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C.wattroff(win, attr)
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}
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return &Window{
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impl: (*WindowImpl)(win),
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Top: top,
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Left: left,
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Width: width,
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Height: height,
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}
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}
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func attrColored(pair ColorPair, a Attr) C.int {
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var attr C.int
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if pair > 0 {
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attr = C.COLOR_PAIR(C.int(pair))
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}
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return attr | C.int(a)
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}
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func attrMono(pair ColorPair, a Attr) C.int {
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var attr C.int
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switch pair {
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case ColCurrent:
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if C.int(a)&C.A_BOLD == C.A_BOLD {
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attr = C.A_REVERSE
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}
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case ColMatch:
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attr = C.A_UNDERLINE
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case ColCurrentMatch:
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attr = C.A_UNDERLINE | C.A_REVERSE
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}
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if C.int(a)&C.A_BOLD == C.A_BOLD {
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attr = attr | C.A_BOLD
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}
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return attr
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}
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func MaxX() int {
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return int(C.COLS)
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}
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func MaxY() int {
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return int(C.LINES)
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}
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func (w *Window) win() *C.WINDOW {
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return (*C.WINDOW)(w.impl)
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}
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func (w *Window) Close() {
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C.delwin(w.win())
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}
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func (w *Window) Enclose(y int, x int) bool {
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return bool(C.wenclose(w.win(), C.int(y), C.int(x)))
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}
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func (w *Window) Move(y int, x int) {
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C.wmove(w.win(), C.int(y), C.int(x))
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}
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func (w *Window) MoveAndClear(y int, x int) {
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w.Move(y, x)
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C.wclrtoeol(w.win())
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}
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func (w *Window) Print(text string) {
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C.waddstr(w.win(), C.CString(strings.Map(func(r rune) rune {
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if r < 32 {
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return -1
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}
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return r
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}, text)))
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}
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func (w *Window) CPrint(pair ColorPair, a Attr, text string) {
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attr := _colorFn(pair, a)
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C.wattron(w.win(), attr)
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w.Print(text)
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C.wattroff(w.win(), attr)
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}
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func Clear() {
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C.clear()
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C.endwin()
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}
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func Refresh() {
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C.refresh()
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}
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func (w *Window) Erase() {
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C.werase(w.win())
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}
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func (w *Window) Fill(str string) bool {
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return C.waddstr(w.win(), C.CString(str)) == C.OK
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}
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func (w *Window) CFill(str string, fg Color, bg Color, a Attr) bool {
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attr := _colorFn(PairFor(fg, bg), a)
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C.wattron(w.win(), attr)
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ret := w.Fill(str)
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C.wattroff(w.win(), attr)
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return ret
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}
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func RefreshWindows(windows []*Window) {
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for _, w := range windows {
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C.wnoutrefresh(w.win())
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}
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C.doupdate()
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}
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func PairFor(fg Color, bg Color) ColorPair {
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key := (int(fg) << 8) + int(bg)
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if found, prs := _colorMap[key]; prs {
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return found
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}
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id := ColorPair(len(_colorMap) + int(ColUser))
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C.init_pair(C.short(id), C.short(fg), C.short(bg))
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_colorMap[key] = id
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return id
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}
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func getch(nonblock bool) int {
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b := make([]byte, 1)
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syscall.SetNonblock(int(_in.Fd()), nonblock)
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_, err := _in.Read(b)
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if err != nil {
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return -1
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}
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return int(b[0])
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}
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func GetBytes() []byte {
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c := getch(false)
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retries := 0
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if c == 27 {
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// Wait for additional keys after ESC for 100ms (10 * 10ms)
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retries = 10
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}
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_buf = append(_buf, byte(c))
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for {
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c = getch(true)
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if c == -1 {
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if retries > 0 {
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retries--
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time.Sleep(10 * time.Millisecond)
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continue
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}
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break
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}
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retries = 0
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_buf = append(_buf, byte(c))
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}
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return _buf
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}
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// 27 (91 79) 77 type x y
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func mouseSequence(sz *int) Event {
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if len(_buf) < 6 {
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return Event{Invalid, 0, nil}
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}
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*sz = 6
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switch _buf[3] {
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case 32, 36, 40, 48, // mouse-down / shift / cmd / ctrl
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35, 39, 43, 51: // mouse-up / shift / cmd / ctrl
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mod := _buf[3] >= 36
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down := _buf[3]%2 == 0
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x := int(_buf[4] - 33)
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y := int(_buf[5] - 33)
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double := false
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if down {
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now := time.Now()
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if now.Sub(_prevDownTime) < doubleClickDuration {
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_clickY = append(_clickY, y)
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} else {
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_clickY = []int{y}
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}
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_prevDownTime = now
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} else {
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if len(_clickY) > 1 && _clickY[0] == _clickY[1] &&
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time.Now().Sub(_prevDownTime) < doubleClickDuration {
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double = true
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}
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}
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return Event{Mouse, 0, &MouseEvent{y, x, 0, down, double, mod}}
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case 96, 100, 104, 112, // scroll-up / shift / cmd / ctrl
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97, 101, 105, 113: // scroll-down / shift / cmd / ctrl
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mod := _buf[3] >= 100
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s := 1 - int(_buf[3]%2)*2
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x := int(_buf[4] - 33)
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y := int(_buf[5] - 33)
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return Event{Mouse, 0, &MouseEvent{y, x, s, false, false, mod}}
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}
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return Event{Invalid, 0, nil}
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}
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func escSequence(sz *int) Event {
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if len(_buf) < 2 {
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return Event{ESC, 0, nil}
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}
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*sz = 2
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switch _buf[1] {
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case 13:
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return Event{AltEnter, 0, nil}
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case 32:
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return Event{AltSpace, 0, nil}
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case 47:
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return Event{AltSlash, 0, nil}
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case 98:
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return Event{AltB, 0, nil}
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case 100:
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return Event{AltD, 0, nil}
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case 102:
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return Event{AltF, 0, nil}
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case 127:
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return Event{AltBS, 0, nil}
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case 91, 79:
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if len(_buf) < 3 {
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return Event{Invalid, 0, nil}
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}
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*sz = 3
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switch _buf[2] {
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case 68:
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return Event{Left, 0, nil}
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case 67:
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return Event{Right, 0, nil}
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case 66:
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return Event{Down, 0, nil}
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case 65:
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return Event{Up, 0, nil}
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case 90:
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return Event{BTab, 0, nil}
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case 72:
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return Event{Home, 0, nil}
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case 70:
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return Event{End, 0, nil}
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case 77:
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return mouseSequence(sz)
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case 80:
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return Event{F1, 0, nil}
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case 81:
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return Event{F2, 0, nil}
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case 82:
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return Event{F3, 0, nil}
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case 83:
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return Event{F4, 0, nil}
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case 49, 50, 51, 52, 53, 54:
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if len(_buf) < 4 {
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return Event{Invalid, 0, nil}
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}
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*sz = 4
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switch _buf[2] {
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case 50:
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if len(_buf) == 5 && _buf[4] == 126 {
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*sz = 5
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switch _buf[3] {
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case 48:
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return Event{F9, 0, nil}
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case 49:
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return Event{F10, 0, nil}
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}
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}
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// Bracketed paste mode \e[200~ / \e[201
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if _buf[3] == 48 && (_buf[4] == 48 || _buf[4] == 49) && _buf[5] == 126 {
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*sz = 6
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return Event{Invalid, 0, nil}
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}
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return Event{Invalid, 0, nil} // INS
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case 51:
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return Event{Del, 0, nil}
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case 52:
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return Event{End, 0, nil}
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case 53:
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return Event{PgUp, 0, nil}
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case 54:
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return Event{PgDn, 0, nil}
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case 49:
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switch _buf[3] {
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case 126:
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return Event{Home, 0, nil}
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case 53, 55, 56, 57:
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if len(_buf) == 5 && _buf[4] == 126 {
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*sz = 5
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switch _buf[3] {
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case 53:
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return Event{F5, 0, nil}
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case 55:
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return Event{F6, 0, nil}
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case 56:
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return Event{F7, 0, nil}
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case 57:
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return Event{F8, 0, nil}
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}
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}
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return Event{Invalid, 0, nil}
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case 59:
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if len(_buf) != 6 {
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return Event{Invalid, 0, nil}
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}
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*sz = 6
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switch _buf[4] {
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case 50:
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switch _buf[5] {
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case 68:
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return Event{Home, 0, nil}
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case 67:
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return Event{End, 0, nil}
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}
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case 53:
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switch _buf[5] {
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case 68:
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return Event{SLeft, 0, nil}
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case 67:
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return Event{SRight, 0, nil}
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}
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} // _buf[4]
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} // _buf[3]
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} // _buf[2]
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} // _buf[2]
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} // _buf[1]
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if _buf[1] >= 'a' && _buf[1] <= 'z' {
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return Event{AltA + int(_buf[1]) - 'a', 0, nil}
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}
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return Event{Invalid, 0, nil}
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}
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func GetChar() Event {
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if len(_buf) == 0 {
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_buf = GetBytes()
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}
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if len(_buf) == 0 {
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panic("Empty _buffer")
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}
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sz := 1
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defer func() {
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_buf = _buf[sz:]
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}()
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switch _buf[0] {
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case CtrlC:
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return Event{CtrlC, 0, nil}
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case CtrlG:
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return Event{CtrlG, 0, nil}
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case CtrlQ:
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return Event{CtrlQ, 0, nil}
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case 127:
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return Event{BSpace, 0, nil}
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case ESC:
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return escSequence(&sz)
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}
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// CTRL-A ~ CTRL-Z
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if _buf[0] <= CtrlZ {
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return Event{int(_buf[0]), 0, nil}
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}
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r, rsz := utf8.DecodeRune(_buf)
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if r == utf8.RuneError {
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return Event{ESC, 0, nil}
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}
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sz = rsz
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return Event{Rune, r, nil}
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}
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