43 lines
771 B
Go
43 lines
771 B
Go
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package main
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import (
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"log"
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"os"
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"github.com/icedream/go-bsdiff/diff"
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"gopkg.in/alecthomas/kingpin.v2"
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)
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var (
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cli = kingpin.New("go-bsdiff", "Generates binary patches.")
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argOld = cli.Arg("old", "The old file.").Required().ExistingFile()
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argNew = cli.Arg("new", "The new file.").Required().ExistingFile()
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argPatch = cli.Arg("patch", "Where to output the patch file.").Required().File()
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)
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func must(err error) {
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if err == nil {
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return
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}
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log.Fatal(err)
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}
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func main() {
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kingpin.MustParse(cli.Parse(os.Args[1:]))
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patchFile := *argPatch
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defer patchFile.Close()
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oldFile, err := os.Open(*argOld)
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must(err)
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defer oldFile.Close()
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newFile, err := os.Open(*argNew)
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must(err)
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defer newFile.Close()
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must(diff.Diff(oldFile, newFile, patchFile))
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}
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