Add echo prompt example

_example/echo_prompt.go

@@ -0,0 +1,36 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/c-bata/go-prompt-toolkit/prompt"
+)
+
+func executor(b *prompt.Buffer) string {
+	r := "Your input: " + b.Text()
+	return r
+}
+
+func completer(b *prompt.Buffer) []string {
+	if w := b.Document().GetWordBeforeCursor(); w == "" {
+		return []string{}
+	}
+	return []string{
+		"users",
+		"sites",
+		"articles",
+		"comments",
+	}
+}
+
+func main() {
+	pt := prompt.NewPrompt(
+		executor,
+		completer,
+		prompt.OptionMaxCompletions(8),
+		prompt.OptionPrefix(">>> "),
+		prompt.OptionTitle("SQLITE CLI"),
+	)
+	defer fmt.Println("\nGoodbye!")
+	pt.Run()
+}

main.go

@@ -1,63 +0,0 @@
-package main
-
-import (
-	"fmt"
-
-	"github.com/c-bata/go-prompt-toolkit/prompt"
-)
-
-func executor(b *prompt.Buffer) string {
-	r := "Your input: " + b.Text()
-	return r
-}
-
-func completer(b *prompt.Buffer) []string {
-	if w := b.Document().GetWordBeforeCursor(); w == "" {
-		return []string{}
-	} else {
-		if []rune(w)[0] == []rune("s")[0] {
-			return []string{"select"}
-		} else if []rune(w)[0] == []rune("w")[0] {
-			return []string{"where"}
-		} else if []rune(w)[0] == []rune("d")[0] {
-			return []string{"drop", "delete"}
-		} else if []rune(w)[0] == []rune("f")[0] {
-			return []string{"from"}
-		}
-	}
-	return []string{
-		"aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffff",
-		"aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffff",
-		"aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffff",
-		"aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffff",
-		"aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffff",
-		"aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffff",
-		"aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffff",
-		"aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffff",
-		"aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffff",
-		"aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffff",
-		"aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffff",
-		"aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffff",
-		"aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffff",
-		"aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffff",
-		"aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffff",
-	}
-}
-
-func main() {
-	pt := prompt.NewPrompt(
-		executor,
-		completer,
-		prompt.MaxCompletionsOption(8),
-		prompt.PrefixOption(">>> "),
-		prompt.TitleOption("SQLITE CLI"),
-		prompt.TextColorOption(prompt.Red),
-		prompt.ResultTextColorOption(prompt.DarkGray),
-		prompt.CompletedTextColorOption(prompt.Green),
-		prompt.CompletionTextColor(prompt.Black),
-		prompt.SelectedCompletionTextColor(prompt.White),
-	)
-	defer fmt.Println("\nGoodbye!")
-	fmt.Print("Hello! This is a example appication using prompt-toolkit.\n")
-	pt.Run()
-}