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55 lines
1.5 KiB
55 lines
1.5 KiB
// +build ignore
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package main
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import (
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"bytes"
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"fmt"
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"io/ioutil"
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"os"
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"os/exec"
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"regexp"
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"strings"
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)
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// This script replaces most `[]byte` with `data.Bytes` in a `.pb.go` file.
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// It was written before we realized we could use `gogo/protobuf` to achieve
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// this more natively. So it's here for safe keeping in case we ever need to
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// abandon `gogo/protobuf`.
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func main() {
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bytePattern := regexp.MustCompile("[[][]]byte")
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const oldPath = "types/types.pb.go"
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const tmpPath = "types/types.pb.new"
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content, err := ioutil.ReadFile(oldPath)
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if err != nil {
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panic("cannot read " + oldPath)
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os.Exit(1)
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}
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lines := bytes.Split(content, []byte("\n"))
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outFile, _ := os.Create(tmpPath)
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wroteImport := false
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for _, line_bytes := range lines {
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line := string(line_bytes)
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gotPackageLine := strings.HasPrefix(line, "package ")
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writeImportTime := strings.HasPrefix(line, "import ")
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containsDescriptor := strings.Contains(line, "Descriptor")
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containsByteArray := strings.Contains(line, "[]byte")
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if containsByteArray && !containsDescriptor {
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line = string(bytePattern.ReplaceAll([]byte(line), []byte("data.Bytes")))
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}
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if writeImportTime && !wroteImport {
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wroteImport = true
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fmt.Fprintf(outFile, "import \"github.com/tendermint/go-wire/data\"\n")
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}
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if gotPackageLine {
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fmt.Fprintf(outFile, "%s\n", "//nolint: gas")
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}
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fmt.Fprintf(outFile, "%s\n", line)
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}
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outFile.Close()
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os.Remove(oldPath)
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os.Rename(tmpPath, oldPath)
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exec.Command("goimports", "-w", oldPath)
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}
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