/*
 * Copyright (c) 2020 Baidu, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package strtool

import (
	"encoding/base64"
	"fmt"
)

func Base64ToHex(s string) (string, error) {
	de, err := base64.StdEncoding.DecodeString(s)

	if err != nil {
		return "", err
	}

	hex := fmt.Sprintf("%x", de)
	return hex, nil
}

func Deduplication(slice *[]string) {
	found := make(map[string]bool)
	total := 0
	for k, v := range *slice {
		if _, ok := found[v]; !ok {
			found[v] = true
			(*slice)[total] = (*slice)[k]
			total++
		}
	}

	*slice = (*slice)[:total]
}
