34 lines
601 B
Go
34 lines
601 B
Go
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package bsdiff
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import (
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"compress/bzip2"
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"io"
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"io/ioutil"
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"log"
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"github.com/icedream/go-bsdiff/internal/native"
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)
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func Patch(oldReader io.Reader, newWriter io.Writer, patchReader io.Reader) (err error) {
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oldBytes, err := ioutil.ReadAll(oldReader)
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if err != nil {
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return
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}
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newLen, err := readHeader(patchReader)
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if err != nil {
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return
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}
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newBytes := make([]byte, newLen)
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log.Printf("Going to create a file of %d bytes.", newLen)
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// Decompression
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bz2Reader := bzip2.NewReader(patchReader)
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err = native.Patch(oldBytes, newBytes, bz2Reader)
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newWriter.Write(newBytes)
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return
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}
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