cheat/internal/config/editor.go

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package config
import (
"fmt"
"os"
"os/exec"
"runtime"
)
// Editor attempts to locate an editor that's appropriate for the environment.
func Editor() (string, error) {
// default to `notepad.exe` on Windows
if runtime.GOOS == "windows" {
return "notepad", nil
}
// look for `nano` on the `PATH`
nano, _ := exec.LookPath("nano")
// search for `$VISUAL`, `$EDITOR`, and then `nano`, in that order
for _, editor := range []string{os.Getenv("VISUAL"), os.Getenv("EDITOR"), nano} {
if editor != "" {
return editor, nil
}
}
// return an error if no path is found
return "", fmt.Errorf("no editor set")
}