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33 lines
536 B
Go
33 lines
536 B
Go
package utils
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import (
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"bufio"
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"crypto/md5"
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"fmt"
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"io"
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)
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func GetFileId(fileHash string, fileSize int64) string {
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return fmt.Sprintf("%s_%d", fileHash, fileSize)
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}
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func GetFileMd5(file io.Reader) (string, error) {
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const bufferSize = 1024 * 1000 // 1MB
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hash := md5.New()
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for buf, reader := make([]byte, bufferSize), bufio.NewReader(file); ; {
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n, err := reader.Read(buf)
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if err != nil {
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if err == io.EOF {
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break
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}
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return "", err
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}
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hash.Write(buf[:n])
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}
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return fmt.Sprintf("%x", hash.Sum(nil)), nil
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}
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