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html: make the low-level tokenizer also skip end-tag attributes.

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R=andybalholm
CC=golang-dev
https://golang.org/cl/6453071
This commit is contained in:
Nigel Tao 2012-08-03 09:29:16 +10:00
parent 37d7500f8d
commit 1916db786f
1 changed files with 13 additions and 16 deletions
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29
src/pkg/exp/html/token.go
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@ -691,7 +691,7 @@ loop:
// readStartTag reads the next start tag token. The opening "<a" has already
// been consumed, where 'a' means anything in [A-Za-z].
func (z *Tokenizer) readStartTag() TokenType {
z.readTag()
z.readTag(true)
if z.err != nil && len(z.attr) == 0 {
return ErrorToken
}
@ -724,9 +724,11 @@ func (z *Tokenizer) readStartTag() TokenType {
return StartTagToken
}
// readTag reads the next tag token. The opening "<a" or "</a" has already been
// consumed, where 'a' means anything in [A-Za-z].
func (z *Tokenizer) readTag() {
// readTag reads the next tag token and its attributes. If saveAttr, those
// attributes are saved in z.attr, otherwise z.attr is set to an empty slice.
// The opening "<a" or "</a" has already been consumed, where 'a' means anything
// in [A-Za-z].
func (z *Tokenizer) readTag(saveAttr bool) {
z.attr = z.attr[:0]
z.nAttrReturned = 0
// Read the tag name and attribute key/value pairs.
@ -742,8 +744,8 @@ func (z *Tokenizer) readTag() {
z.raw.end--
z.readTagAttrKey()
z.readTagAttrVal()
// Save pendingAttr if it has a non-empty key.
if z.pendingAttr[0].start != z.pendingAttr[0].end {
// Save pendingAttr if saveAttr and that attribute has a non-empty key.
if saveAttr && z.pendingAttr[0].start != z.pendingAttr[0].end {
z.attr = append(z.attr, z.pendingAttr)
}
if z.skipWhiteSpace(); z.err != nil {
@ -945,7 +947,7 @@ loop:
continue loop
}
if 'a' <= c && c <= 'z' || 'A' <= c && c <= 'Z' {
z.readTag()
z.readTag(false)
z.tt = EndTagToken
return z.tt
}
@ -1078,15 +1080,10 @@ func (z *Tokenizer) Token() Token {
t.Data = string(z.Text())
case StartTagToken, SelfClosingTagToken, EndTagToken:
name, moreAttr := z.TagName()
// Since end tags should not have attributes, the high-level tokenizer
// interface will not return attributes for an end tag token even if
// it looks like </br foo="bar">.
if z.tt != EndTagToken {
for moreAttr {
var key, val []byte
key, val, moreAttr = z.TagAttr()
t.Attr = append(t.Attr, Attribute{"", atom.String(key), string(val)})
}
for moreAttr {
var key, val []byte
key, val, moreAttr = z.TagAttr()
t.Attr = append(t.Attr, Attribute{"", atom.String(key), string(val)})
}
if a := atom.Lookup(name); a != 0 {
t.DataAtom, t.Data = a, a.String()