88 lines
1.9 KiB
Go
88 lines
1.9 KiB
Go
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package atom
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import (
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"os"
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"strings"
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"syscall"
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"unsafe"
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"gitea.zaclys.com/bvaudour/gob/option"
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)
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const (
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cs8 = syscall.CS8
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echo = syscall.ECHO
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tcgets = syscall.TCGETS
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tcsets = syscall.TCSETS
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icanon = syscall.ICANON
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icrnl = syscall.ICRNL
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iexten = syscall.IEXTEN
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inpck = syscall.INPCK
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ioctl = syscall.SYS_IOCTL
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isig = syscall.ISIG
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istrip = syscall.ISTRIP
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ixon = syscall.IXON
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opost = syscall.OPOST
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tiocgwinsz = syscall.TIOCGWINSZ
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vmin = syscall.VMIN
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vtime = syscall.VTIME
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)
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var (
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stdin = syscall.Stdin
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stdout = syscall.Stdout
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)
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type termios struct {
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syscall.Termios
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}
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func (mode *termios) applyMode() (err option.Option[error]) {
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_, _, errno := syscall.Syscall(ioctl, uintptr(stdin), tcsets, uintptr(unsafe.Pointer(mode)))
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if errno != 0 {
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return option.Some[error](errno)
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}
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return
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}
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func newTermios(handle int) option.Result[*termios] {
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mode := new(termios)
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_, _, errno := syscall.Syscall(ioctl, uintptr(handle), tcgets, uintptr(unsafe.Pointer(mode)))
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if errno != 0 {
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return option.Err[*termios](errno)
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}
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return option.Ok(mode)
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}
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func terminalSupported() bool {
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bad := map[string]bool{"": true, "dumb": true, "cons25": true}
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return !bad[strings.ToLower(os.Getenv("TERM"))]
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}
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type TerminalSize struct {
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row, col uint16
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xpixel, ypixel uint16
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}
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func (ts TerminalSize) Width() int { return int(ts.col) }
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func (ts TerminalSize) Height() int { return int(ts.row) }
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// GetTerminalSize retourne les dimensions actuelles du terminal.
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func GetTerminalSize() (result option.Option[TerminalSize]) {
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var ts TerminalSize
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sc, _, _ := syscall.Syscall(ioctl, uintptr(stdout), tiocgwinsz, uintptr(unsafe.Pointer(&ts)))
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if int(sc) >= 0 {
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return option.Some(ts)
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}
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return
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}
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func checkOutput() (useCHA bool) {
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// xterm is known to support CHA
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useCHA = strings.Contains(strings.ToLower(os.Getenv("TERM")), "xterm")
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return
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}
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