forked from immutability-io/vault-ethereum
/
util.go
58 lines (52 loc) · 1.5 KB
/
util.go
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// Copyright © 2018 Immutability, LLC
//
// 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 main
import (
"bytes"
"crypto/ecdsa"
"encoding/json"
)
// PrettyPrint prints an indented JSON payload. This is used for development debugging.
func PrettyPrint(v interface{}) string {
jsonString, _ := json.Marshal(v)
var out bytes.Buffer
json.Indent(&out, jsonString, "", " ")
return out.String()
}
// Dedup removes duplicates from a list
func Dedup(stringSlice []string) []string {
var returnSlice []string
for _, value := range stringSlice {
if !Contains(returnSlice, value) {
returnSlice = append(returnSlice, value)
}
}
return returnSlice
}
// Contains returns true if an element is present in a list
func Contains(stringSlice []string, searchString string) bool {
for _, value := range stringSlice {
if value == searchString {
return true
}
}
return false
}
// ZeroKey removes the key from memory
func ZeroKey(k *ecdsa.PrivateKey) {
b := k.D.Bits()
for i := range b {
b[i] = 0
}
}