35 lines
669 B
Go
35 lines
669 B
Go
package diff
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import (
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"io"
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"io/ioutil"
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"github.com/dsnet/compress/bzip2"
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"github.com/icedream/go-bsdiff/internal"
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"github.com/icedream/go-bsdiff/internal/native"
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)
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func Diff(oldReader, newReader io.Reader, patchWriter io.Writer) (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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newBytes, err := ioutil.ReadAll(newReader)
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if err != nil {
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return
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}
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if err = internal.WriteHeader(patchWriter, uint64(len(newBytes))); err != nil {
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return
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}
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// Compression
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bz2Writer, err := bzip2.NewWriter(patchWriter, nil)
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if err != nil {
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return
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}
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defer bz2Writer.Close()
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return native.Diff(oldBytes, newBytes, bz2Writer)
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}
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