PiwigoDirectoryUploader/internal/pkg/localFileStructure/checksumCalculator.go

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/*
* Copyright (C) 2019 Philipp Haefelfinger (http://www.haefelfinger.ch/). All Rights Reserved.
* This application is licensed under GPLv2. See the LICENSE file in the root directory of the project.
*/
package localFileStructure
import (
"crypto/md5"
"fmt"
"github.com/sirupsen/logrus"
"io"
"os"
)
func CalculateFileCheckSums(filePath string) (string, error) {
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file, err := os.Open(filePath)
if err != nil {
logrus.Errorf("Could not open file %s", filePath)
return "", err
}
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defer file.Close()
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hash := md5.New()
if _, err := io.Copy(hash, file); err != nil {
logrus.Errorf("Could calculate md5 sum of file %s", filePath)
return "", err
}
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md5sum := fmt.Sprintf("%x", hash.Sum(nil))
logrus.Tracef("Calculated md5 sum of %s - %s", filePath, md5sum)
return md5sum, nil
}