pupirka

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package main
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import (
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	"bytes"
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	"io/ioutil"
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	"os"
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)
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func FileExistBool(filename string) bool {
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	_, err := os.Stat(filename)
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	if os.IsNotExist(err) {
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		return false
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	}
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	return true
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}
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func FolderExistBool(folder string) bool {
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	_, err := ioutil.ReadDir(folder)
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	if err != nil {
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		return false
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	}
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	return true
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}
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func FileReWriteByte(filename string, b []byte) error {
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	err := ioutil.WriteFile(filename, b, 0644)
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	if err != nil {
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		return err
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	}
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	return nil
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}
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//FileCompareByteBool
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/*
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function compare file content and byte content
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return true if b equal filename content
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return false if b not equal filename content or error
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*/
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func FileCompareByteBool(filename string, b []byte) (bool, error) {
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	dat, err := ioutil.ReadFile(filename)
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	if err != nil {
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		return false, err
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	}
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	res := bytes.Compare(dat, b)
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	if res == 0 {
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		return true, nil
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	}
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	return false, nil
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}
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