63 lines
965 B
Go
63 lines
965 B
Go
// Copyright (C) 2021-2023 YumeMichi
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//
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// SPDX-License-Identifier: Apache-2.0
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package utils
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import (
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"encoding/hex"
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"math/rand"
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"os"
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"sync"
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"time"
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)
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var (
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rwMutex sync.RWMutex
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)
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func PathExists(path string) bool {
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_, err := os.Stat(path)
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return err == nil || os.IsExist(err)
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}
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func ReadAllText(path string) string {
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rwMutex.RLock()
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defer rwMutex.RUnlock()
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b, err := os.ReadFile(path)
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if err != nil {
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return ""
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}
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return string(b)
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}
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func WriteAllText(path, text string) {
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rwMutex.Lock()
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defer rwMutex.Unlock()
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_ = os.WriteFile(path, []byte(text), 0644)
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}
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func XOR(s1, s2 []byte) []byte {
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n := min(len(s1), len(s2))
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res := make([]byte, n)
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for i, b := range s1[:n] {
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res[i] = b ^ s2[i]
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}
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return res
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}
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func Sub16(str []byte) []byte {
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return str[16:]
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}
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func RandomStr(len int) string {
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rand.Seed(time.Now().UnixNano())
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mRand := make([]byte, len)
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rand.Read(mRand)
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mRandStr := hex.EncodeToString(mRand)[0:len]
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return mRandStr
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}
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