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html: ignore whitespace before <head> element

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Pass tests2.dat, test 47:
" \n "
(That is, two spaces separated by a newline)

| <html>
|   <head>
|   <body>

Also pass tests through test 49:
<!DOCTYPE html><script>
</script>  <title>x</title>  </head>

R=nigeltao
CC=golang-dev
https://golang.org/cl/5422043
This commit is contained in:
Andrew Balholm 2011-11-22 09:27:27 +11:00 committed by Nigel Tao
parent 86c08e9611
commit 750de28d6c
2 changed files with 20 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
src/pkg/html/parse.go
View File

@ -319,9 +319,17 @@ func (p *parser) resetInsertionMode() {
p.im = inBodyIM
}
const whitespace = " \t\r\n\f"
// Section 11.2.5.4.1.
func initialIM(p *parser) bool {
switch p.tok.Type {
case TextToken:
p.tok.Data = strings.TrimLeft(p.tok.Data, whitespace)
if len(p.tok.Data) == 0 {
// It was all whitespace, so ignore it.
return true
}
case CommentToken:
p.doc.Add(&Node{
Type: CommentNode,
@ -345,6 +353,12 @@ func initialIM(p *parser) bool {
// Section 11.2.5.4.2.
func beforeHTMLIM(p *parser) bool {
switch p.tok.Type {
case TextToken:
p.tok.Data = strings.TrimLeft(p.tok.Data, whitespace)
if len(p.tok.Data) == 0 {
// It was all whitespace, so ignore it.
return true
}
case StartTagToken:
if p.tok.Data == "html" {
p.addElement(p.tok.Data, p.tok.Attr)
@ -383,7 +397,11 @@ func beforeHeadIM(p *parser) bool {
case ErrorToken:
implied = true
case TextToken:
// TODO: distinguish whitespace text from others.
p.tok.Data = strings.TrimLeft(p.tok.Data, whitespace)
if len(p.tok.Data) == 0 {
// It was all whitespace, so ignore it.
return true
}
implied = true
case StartTagToken:
switch p.tok.Data {
@ -417,8 +435,6 @@ func beforeHeadIM(p *parser) bool {
return !implied
}
const whitespace = " \t\r\n\f"
// Section 11.2.5.4.4.
func inHeadIM(p *parser) bool {
var (

2
src/pkg/html/parse_test.go
View File

@ -134,7 +134,7 @@ func TestParser(t *testing.T) {
}{
// TODO(nigeltao): Process all the test cases from all the .dat files.
{"tests1.dat", -1},
{"tests2.dat", 47},
{"tests2.dat", 50},
{"tests3.dat", 0},
}
for _, tf := range testFiles {