Initial commit

example/example.go

@@ -0,0 +1,15 @@
+package main
+
+import (
+	"fmt"
+
+	"git.kiefte.eu/lapingvino/prompt"
+)
+
+func main() {
+	fmt.Print("Enter a string: ")
+	s := prompt.MustRead[string]()
+	fmt.Print("Now enter a complex number: ")
+	c := prompt.MustRead[complex128]()
+	fmt.Println(s, c)
+}

go.mod

@@ -0,0 +1,3 @@
+module git.kiefte.eu/lapingvino/prompt
+
+go 1.18

prompt.go

@@ -0,0 +1,40 @@
+package prompt
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+)
+
+type Prompter interface {
+	Prompt(string)
+}
+
+func Read[T any]() (out T, err error) {
+	nilv := out
+	b := bufio.NewReader(os.Stdin)
+	s, err := b.ReadString('\n')
+	if err != nil {
+		return nilv, err
+	}
+	switch o := any(&out).(type) {
+	case *string:
+		*o = s[:len(s)-1]
+	case *Prompter:
+		(*o).Prompt(s)
+	default:
+		_, err = fmt.Sscan(s, &out)
+		if err != nil {
+			return nilv, err
+		}
+	}
+	return out, nil
+}
+
+func MustRead[T any]() T {
+	out, err := Read[T]()
+	if err != nil {
+		panic("Error during read: "+err.Error())
+	}
+	return out
+}