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26 lines
506 B
Go
26 lines
506 B
Go
// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
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package utils
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import "io"
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func CopyWithFilter(writer io.Writer, reader io.Reader, buf []byte, filter func(p []byte) []byte) (written int64, err error) {
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for {
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n, err := reader.Read(buf)
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if n > 0 {
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n2, err := writer.Write(filter(buf[:n]))
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written += int64(n2)
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if err != nil {
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return written, err
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}
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}
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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 written, err
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}
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}
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return written, nil
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}
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