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net: use strings.Builder
Change-Id: I3861a73d6b9d1d454c42bec50099b916bf30f1cd Reviewed-on: https://go-review.googlesource.com/c/go/+/428266 Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Robert Griesemer <gri@google.com> Run-TryBot: xie cui <523516579@qq.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Damien Neil <dneil@google.com>
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@ -7,7 +7,6 @@
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package net
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import (
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"bytes"
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"context"
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"fmt"
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"internal/testenv"
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@ -718,7 +717,7 @@ func testDots(t *testing.T, mode string) {
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}
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func mxString(mxs []*MX) string {
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var buf bytes.Buffer
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var buf strings.Builder
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sep := ""
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fmt.Fprintf(&buf, "[")
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for _, mx := range mxs {
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@ -730,7 +729,7 @@ func mxString(mxs []*MX) string {
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}
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func nsString(nss []*NS) string {
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var buf bytes.Buffer
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var buf strings.Builder
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sep := ""
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fmt.Fprintf(&buf, "[")
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for _, ns := range nss {
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@ -742,7 +741,7 @@ func nsString(nss []*NS) string {
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}
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func srvString(srvs []*SRV) string {
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var buf bytes.Buffer
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var buf strings.Builder
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sep := ""
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fmt.Fprintf(&buf, "[")
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for _, srv := range srvs {
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@ -5,7 +5,6 @@
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package net
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import (
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"bytes"
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"context"
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"encoding/json"
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"errors"
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@ -216,8 +215,8 @@ func (s byHost) Less(i, j int) bool { return s[i].Host < s[j].Host }
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func (s byHost) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
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func nslookup(qtype, name string) (string, error) {
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var out bytes.Buffer
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var err bytes.Buffer
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var out strings.Builder
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var err strings.Builder
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cmd := exec.Command("nslookup", "-querytype="+qtype, name)
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cmd.Stdout = &out
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cmd.Stderr = &err
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