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html: adjust foreign attributes.

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Pass tests10.dat, test 22:
<!DOCTYPE html><body xlink:href=foo><svg xlink:href=foo></svg>

| <!DOCTYPE html>
| <html>
|   <head>
|   <body>
|     xlink:href="foo"
|     <svg svg>
|       xlink href="foo"

Also pass tests through test 29:
<div><svg><path></svg><path>

R=andybalholm
CC=golang-dev
https://golang.org/cl/5489117
This commit is contained in:
Nigel Tao 2011-12-25 12:42:47 +11:00
parent b28f017537
commit d5e45e3a8a
5 changed files with 49 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
src/pkg/html/foreign.go
View File

@ -4,6 +4,25 @@
package html
import (
"strings"
)
func adjustForeignAttributes(aa []Attribute) {
for i, a := range aa {
if a.Key == "" || a.Key[0] != 'x' {
continue
}
switch a.Key {
case "xlink:actuate", "xlink:arcrole", "xlink:href", "xlink:role", "xlink:show",
"xlink:title", "xlink:type", "xml:base", "xml:lang", "xml:space", "xmlns:xlink":
j := strings.Index(a.Key, ":")
aa[i].Namespace = a.Key[:j]
aa[i].Key = a.Key[j+1:]
}
}
}
// Section 12.2.5.5.
var breakout = map[string]bool{
"b": true,

4
src/pkg/html/parse.go
View File

@ -807,7 +807,7 @@ func inBodyIM(p *parser) bool {
// TODO: adjust SVG attributes.
namespace = "svg"
}
// TODO: adjust foreign attributes.
adjustForeignAttributes(p.tok.Attr)
p.addElement(p.tok.Data, p.tok.Attr)
p.top().Namespace = namespace
return true
@ -1678,7 +1678,7 @@ func parseForeignContent(p *parser) bool {
default:
panic("html: bad parser state: unexpected namespace")
}
// TODO: adjust foreign attributes.
adjustForeignAttributes(p.tok.Attr)
p.addElement(p.tok.Data, p.tok.Attr)
case EndTagToken:
for i := len(p.oe) - 1; i >= 0; i-- {

17
src/pkg/html/parse_test.go
View File

@ -103,10 +103,21 @@ func dumpLevel(w io.Writer, n *Node, level int) error {
} else {
fmt.Fprintf(w, "<%s>", n.Data)
}
for _, a := range n.Attr {
attr := n.Attr
if len(attr) == 2 && attr[0].Namespace == "xml" && attr[1].Namespace == "xlink" {
// Some of the test cases in tests10.dat change the order of adjusted
// foreign attributes, but that behavior is not in the spec, and could
// simply be an implementation detail of html5lib's python map ordering.
attr[0], attr[1] = attr[1], attr[0]
}
for _, a := range attr {
io.WriteString(w, "\n")
dumpIndent(w, level+1)
fmt.Fprintf(w, `%s="%s"`, a.Key, a.Val)
if a.Namespace != "" {
fmt.Fprintf(w, `%s %s="%s"`, a.Namespace, a.Key, a.Val)
} else {
fmt.Fprintf(w, `%s="%s"`, a.Key, a.Val)
}
}
case TextNode:
fmt.Fprintf(w, `"%s"`, n.Data)
@ -173,7 +184,7 @@ func TestParser(t *testing.T) {
{"tests4.dat", -1},
{"tests5.dat", -1},
{"tests6.dat", 47},
{"tests10.dat", 22},
{"tests10.dat", 30},
}
for _, tf := range testFiles {
f, err := os.Open("testdata/webkit/" + tf.filename)

8
src/pkg/html/render.go
View File

@ -149,6 +149,14 @@ func render1(w writer, n *Node) error {
if err := w.WriteByte(' '); err != nil {
return err
}
if a.Namespace != "" {
if _, err := w.WriteString(a.Namespace); err != nil {
return err
}
if err := w.WriteByte(':'); err != nil {
return err
}
}
if _, err := w.WriteString(a.Key); err != nil {
return err
}

9
src/pkg/html/token.go
View File

@ -52,11 +52,14 @@ func (t TokenType) String() string {
return "Invalid(" + strconv.Itoa(int(t)) + ")"
}
// An Attribute is an attribute key-value pair. Key is alphabetic (and hence
// An Attribute is an attribute namespace-key-value triple. Namespace is
// non-empty for foreign attributes like xlink, Key is alphabetic (and hence
// does not contain escapable characters like '&', '<' or '>'), and Val is
// unescaped (it looks like "a<b" rather than "a&lt;b").
//
// Namespace is only used by the parser, not the tokenizer.
type Attribute struct {
Key, Val string
Namespace, Key, Val string
}
// A Token consists of a TokenType and some Data (tag name for start and end
@ -756,7 +759,7 @@ func (z *Tokenizer) Token() Token {
for moreAttr {
var key, val []byte
key, val, moreAttr = z.TagAttr()
attr = append(attr, Attribute{string(key), string(val)})
attr = append(attr, Attribute{"", string(key), string(val)})
}
t.Data = string(name)
t.Attr = attr