go-tools/lint/generated.go at 2019.1 · dominikh/go-tools

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package lint

import (

"bufio"

"bytes"

"io"

)

var (

prefix = []byte("// Code generated ")

suffix = []byte(" DO NOT EDIT.")

nl = []byte("\n")

crnl = []byte("\r\n")

)

func isGenerated(r io.Reader) bool {

br := bufio.NewReader(r)

for {

s, err := br.ReadBytes('\n')

if err != nil && err != io.EOF {

return false

}

s = bytes.TrimSuffix(s, crnl)

s = bytes.TrimSuffix(s, nl)

if bytes.HasPrefix(s, prefix) && bytes.HasSuffix(s, suffix) {

return true

}

if err == io.EOF {

break

}

return false

}