package main

import (
	"errors"
	"unicode/utf8"
)

// Datatype_String is basically the default type for
// boltbrowser (and the boltease library)
type Datatype_String struct{}

func (t *Datatype_String) Name() string {
	return "string"
}

func (t *Datatype_String) ToString(data []byte) (string, error) {
	if utf8.Valid(data) {
		ok := true
		for _, r := range string(data) {
			if r < 0x20 {
				ok = false
				break
			} else if r >= 0x7f && r <= 0x9f {
				ok = false
				break
			}
		}
		if ok {
			return string(data), nil
		}
	}
	return "", errors.New("Invalid String Data")
}

func (t *Datatype_String) FromString(val string) ([]byte, error) {
	return []byte(val), nil
}