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check for valid terminal

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This commit is contained in:
Timothy Warren 2021-03-19 17:08:19 -04:00
parent 64b7a51f69
commit eb474ddad2
1 changed files with 12 additions and 2 deletions
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14
internal/terminal/terminal.go
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@ -2,12 +2,22 @@ package terminal
import ( import (
"fmt" "fmt"
"golang.org/x/term"
"os" "os"
"golang.org/x/term"
) )
// Is this a valid interactive terminal?
func check() {
if !term.IsTerminal(int(os.Stdin.Fd())) {
panic("An interactive terminal is required to use a text editor!")
}
}
// Put the terminal in raw mode // Put the terminal in raw mode
func RawOn() *term.State { func RawOn() *term.State {
check()
oldState, err := term.MakeRaw(int(os.Stdin.Fd())) oldState, err := term.MakeRaw(int(os.Stdin.Fd()))
if err != nil { if err != nil {
panic(err) panic(err)
@ -29,4 +39,4 @@ func OutLn(format string, a ...interface{}) {
formatted := fmt.Sprintf(format, a...) formatted := fmt.Sprintf(format, a...)
fmt.Printf("%s\r\n", formatted) fmt.Printf("%s\r\n", formatted)
} }