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30 lines
423 B
30 lines
423 B
package pkg
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import (
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"crypto/md5"
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"encoding/hex"
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"hash"
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"io"
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)
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func NewMd5Reader(r io.Reader) *Md5Reader {
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return &Md5Reader{h: md5.New(), r: r}
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}
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type Md5Reader struct {
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h hash.Hash
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r io.Reader
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}
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func (r *Md5Reader) Read(p []byte) (n int, err error) {
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n, err = r.r.Read(p)
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if err == nil && n > 0 {
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r.h.Write(p[:n])
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}
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return
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}
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func (r *Md5Reader) Md5() string {
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return hex.EncodeToString(r.h.Sum(nil))
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}
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