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html/template: use strings.Builder

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Change-Id: Iab6ef8c6c74c09e8358f7d7088a82089725479ee
Reviewed-on: https://go-review.googlesource.com/c/go/+/428260
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
This commit is contained in:
cuiweixie 2022-09-04 17:59:50 +08:00 committed by Gopher Robot
parent 91a1b55489
commit 07b19bf5ab
9 changed files with 33 additions and 36 deletions
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5
src/html/template/clone_test.go
View File

@ -5,7 +5,6 @@
package template
import (
"bytes"
"errors"
"fmt"
"io"
@ -22,7 +21,7 @@ func TestAddParseTreeHTML(t *testing.T) {
t.Fatal(err)
}
added := Must(root.AddParseTree("b", tree["b"]))
b := new(bytes.Buffer)
b := new(strings.Builder)
err = added.ExecuteTemplate(b, "a", "1>0")
if err != nil {
t.Fatal(err)
@ -39,7 +38,7 @@ func TestClone(t *testing.T) {
// In the t2 template, it will be in a JavaScript context.
// In the t3 template, it will be in a CSS context.
const tmpl = `{{define "a"}}{{template "lhs"}}{{.}}{{template "rhs"}}{{end}}`
b := new(bytes.Buffer)
b := new(strings.Builder)
// Create an incomplete template t0.
t0 := Must(New("t0").Parse(tmpl))

4
src/html/template/content_test.go
View File

@ -385,7 +385,7 @@ func TestTypedContent(t *testing.T) {
tmpl := Must(New("x").Parse(test.input))
pre := strings.Index(test.input, "{{.}}")
post := len(test.input) - (pre + 5)
var b bytes.Buffer
var b strings.Builder
for i, x := range data {
b.Reset()
if err := tmpl.Execute(&b, x); err != nil {
@ -419,7 +419,7 @@ func (s *errorer) Error() string {
func TestStringer(t *testing.T) {
s := &myStringer{3}
b := new(bytes.Buffer)
b := new(strings.Builder)
tmpl := Must(New("x").Parse("{{.}}"))
if err := tmpl.Execute(b, s); err != nil {
t.Fatal(err)

16
src/html/template/escape_test.go
View File

@ -688,7 +688,7 @@ func TestEscape(t *testing.T) {
t.Errorf("%s: tree not set properly", test.name)
continue
}
b := new(bytes.Buffer)
b := new(strings.Builder)
if err := tmpl.Execute(b, data); err != nil {
t.Errorf("%s: template execution failed: %s", test.name, err)
continue
@ -735,7 +735,7 @@ func TestEscapeMap(t *testing.T) {
},
} {
tmpl := Must(New("").Parse(test.input))
b := new(bytes.Buffer)
b := new(strings.Builder)
if err := tmpl.Execute(b, data); err != nil {
t.Errorf("%s: template execution failed: %s", test.desc, err)
continue
@ -877,7 +877,7 @@ func TestEscapeSet(t *testing.T) {
t.Errorf("error parsing %q: %v", source, err)
continue
}
var b bytes.Buffer
var b strings.Builder
if err := tmpl.ExecuteTemplate(&b, "main", data); err != nil {
t.Errorf("%q executing %v", err.Error(), tmpl.Lookup("main"))
@ -1828,7 +1828,7 @@ func TestIndirectPrint(t *testing.T) {
bp := &b
bpp := &bp
tmpl := Must(New("t").Parse(`{{.}}`))
var buf bytes.Buffer
var buf strings.Builder
err := tmpl.Execute(&buf, ap)
if err != nil {
t.Errorf("Unexpected error: %s", err)
@ -1871,7 +1871,7 @@ func TestPipeToMethodIsEscaped(t *testing.T) {
t.Errorf("panicked: %v\n", panicValue)
}
}()
var b bytes.Buffer
var b strings.Builder
tmpl.Execute(&b, Issue7379(0))
return b.String()
}
@ -1904,7 +1904,7 @@ func TestIdempotentExecute(t *testing.T) {
Parse(`{{define "main"}}<body>{{template "hello"}}</body>{{end}}`))
Must(tmpl.
Parse(`{{define "hello"}}Hello, {{"Ladies & Gentlemen!"}}{{end}}`))
got := new(bytes.Buffer)
got := new(strings.Builder)
var err error
// Ensure that "hello" produces the same output when executed twice.
want := "Hello, Ladies &amp; Gentlemen!"
@ -1947,7 +1947,7 @@ func TestOrphanedTemplate(t *testing.T) {
t1 := Must(New("foo").Parse(`<a href="{{.}}">link1</a>`))
t2 := Must(t1.New("foo").Parse(`bar`))
var b bytes.Buffer
var b strings.Builder
const wantError = `template: "foo" is an incomplete or empty template`
if err := t1.Execute(&b, "javascript:alert(1)"); err == nil {
t.Fatal("expected error executing t1")
@ -1976,7 +1976,7 @@ func TestAliasedParseTreeDoesNotOverescape(t *testing.T) {
if _, err := tpl.AddParseTree("bar", tpl.Tree); err != nil {
t.Fatalf("AddParseTree error: %v", err)
}
var b1, b2 bytes.Buffer
var b1, b2 strings.Builder
if err := tpl.ExecuteTemplate(&b1, "foo", data); err != nil {
t.Fatalf(`ExecuteTemplate failed for "foo": %v`, err)
}

18
src/html/template/exec_test.go
View File

@ -764,7 +764,7 @@ func mapOfThree() any {
}
func testExecute(execTests []execTest, template *Template, t *testing.T) {
b := new(bytes.Buffer)
b := new(strings.Builder)
funcs := FuncMap{
"add": add,
"count": count,
@ -856,7 +856,7 @@ func TestDelims(t *testing.T) {
if err != nil {
t.Fatalf("delim %q text %q parse err %s", left, text, err)
}
var b = new(bytes.Buffer)
var b = new(strings.Builder)
err = tmpl.Execute(b, value)
if err != nil {
t.Fatalf("delim %q exec err %s", left, err)
@ -997,7 +997,7 @@ func TestTree(t *testing.T) {
if err != nil {
t.Fatal("parse error:", err)
}
var b bytes.Buffer
var b strings.Builder
const expect = "[1[2[3[4]][5[6]]][7[8[9]][10[11]]]]"
// First by looking up the template.
err = tmpl.Lookup("tree").Execute(&b, tree)
@ -1207,7 +1207,7 @@ var cmpTests = []cmpTest{
}
func TestComparison(t *testing.T) {
b := new(bytes.Buffer)
b := new(strings.Builder)
var cmpStruct = struct {
Uthree, Ufour uint
NegOne, Three int
@ -1255,7 +1255,7 @@ func TestMissingMapKey(t *testing.T) {
if err != nil {
t.Fatal(err)
}
var b bytes.Buffer
var b strings.Builder
// By default, just get "<no value>" // NOTE: not in html/template, get empty string
err = tmpl.Execute(&b, data)
if err != nil {
@ -1424,7 +1424,7 @@ func TestBlock(t *testing.T) {
t.Fatal(err)
}
var buf bytes.Buffer
var buf strings.Builder
if err := tmpl.Execute(&buf, "hello"); err != nil {
t.Fatal(err)
}
@ -1530,7 +1530,7 @@ func TestAddrOfIndex(t *testing.T) {
}
for _, text := range texts {
tmpl := Must(New("tmpl").Parse(text))
var buf bytes.Buffer
var buf strings.Builder
err := tmpl.Execute(&buf, reflect.ValueOf([]V{{1}}))
if err != nil {
t.Fatalf("%s: Execute: %v", text, err)
@ -1586,7 +1586,7 @@ func TestInterfaceValues(t *testing.T) {
for _, tt := range tests {
tmpl := Must(New("tmpl").Parse(tt.text))
var buf bytes.Buffer
var buf strings.Builder
err := tmpl.Execute(&buf, map[string]any{
"PlusOne": func(n int) int {
return n + 1
@ -1681,7 +1681,7 @@ func TestIssue31810(t *testing.T) {
t.Skip("broken in html/template")
// A simple value with no arguments is fine.
var b bytes.Buffer
var b strings.Builder
const text = "{{ (.) }}"
tmpl, err := New("").Parse(text)
if err != nil {

2
src/html/template/html.go
View File

@ -176,7 +176,7 @@ func htmlReplacer(s string, replacementTable []string, badRunes bool) string {
// stripTags takes a snippet of HTML and returns only the text content.
// For example, `<b>&iexcl;Hi!</b> <script>...</script>` -> `&iexcl;Hi! `.
func stripTags(html string) string {
var b bytes.Buffer
var b strings.Builder
s, c, i, allText := []byte(html), context{}, 0, true
// Using the transition funcs helps us avoid mangling
// `<div title="1>2">` or `I <3 Ponies!`.

3
src/html/template/js_test.go
View File

@ -5,7 +5,6 @@
package template
import (
"bytes"
"math"
"strings"
"testing"
@ -321,7 +320,7 @@ func TestEscapersOnLower7AndSelectHighCodepoints(t *testing.T) {
// Escape it rune by rune to make sure that any
// fast-path checking does not break escaping.
var buf bytes.Buffer
var buf strings.Builder
for _, c := range input {
buf.WriteString(test.escaper(string(c)))
}

6
src/html/template/multi_test.go
View File

@ -8,8 +8,8 @@ package template
import (
"archive/zip"
"bytes"
"os"
"strings"
"testing"
"text/template/parse"
)
@ -245,7 +245,7 @@ func TestEmptyTemplate(t *testing.T) {
t.Fatal(err)
}
}
buf := &bytes.Buffer{}
buf := &strings.Builder{}
if err := m.Execute(buf, c.in); err != nil {
t.Error(i, err)
continue
@ -280,7 +280,7 @@ func TestIssue19294(t *testing.T) {
t.Fatal(err)
}
}
var buf bytes.Buffer
var buf strings.Builder
res.Execute(&buf, 0)
if buf.String() != "stylesheet" {
t.Fatalf("iteration %d: got %q; expected %q", i, buf.String(), "stylesheet")

4
src/html/template/template_test.go
View File

@ -26,7 +26,7 @@ func TestTemplateClone(t *testing.T) {
const want = "stuff"
parsed := Must(clone.Parse(want))
var buf bytes.Buffer
var buf strings.Builder
err = parsed.Execute(&buf, nil)
if err != nil {
t.Fatal(err)
@ -207,7 +207,7 @@ func (c *testCase) mustNotParse(t *Template, text string) {
}
func (c *testCase) mustExecute(t *Template, val any, want string) {
var buf bytes.Buffer
var buf strings.Builder
err := t.Execute(&buf, val)
if err != nil {
c.t.Fatalf("execute: %v", err)

11
src/html/template/url.go
View File

@ -5,7 +5,6 @@
package template
import (
"bytes"
"fmt"
"strings"
)
@ -76,7 +75,7 @@ func urlProcessor(norm bool, args ...any) string {
if t == contentTypeURL {
norm = true
}
var b bytes.Buffer
var b strings.Builder
if processURLOnto(s, norm, &b) {
return b.String()
}
@ -85,7 +84,7 @@ func urlProcessor(norm bool, args ...any) string {
// processURLOnto appends a normalized URL corresponding to its input to b
// and reports whether the appended content differs from s.
func processURLOnto(s string, norm bool, b *bytes.Buffer) bool {
func processURLOnto(s string, norm bool, b *strings.Builder) bool {
b.Grow(len(s) + 16)
written := 0
// The byte loop below assumes that all URLs use UTF-8 as the
@ -149,7 +148,7 @@ func srcsetFilterAndEscaper(args ...any) string {
case contentTypeURL:
// Normalizing gets rid of all HTML whitespace
// which separate the image URL from its metadata.
var b bytes.Buffer
var b strings.Builder
if processURLOnto(s, true, &b) {
s = b.String()
}
@ -157,7 +156,7 @@ func srcsetFilterAndEscaper(args ...any) string {
return strings.ReplaceAll(s, ",", "%2c")
}
var b bytes.Buffer
var b strings.Builder
written := 0
for i := 0; i < len(s); i++ {
if s[i] == ',' {
@ -183,7 +182,7 @@ func isHTMLSpaceOrASCIIAlnum(c byte) bool {
return (c < 0x80) && 0 != (htmlSpaceAndASCIIAlnumBytes[c>>3]&(1<<uint(c&0x7)))
}
func filterSrcsetElement(s string, left int, right int, b *bytes.Buffer) {
func filterSrcsetElement(s string, left int, right int, b *strings.Builder) {
start := left
for start < right && isHTMLSpace(s[start]) {
start++