README
¶
A CSS selector compiler
This package implements a CSS selector compiler for Go's HTML parsing package golang.org/x/net/html.
package main
import (
"fmt"
"os"
"strings"
"github.com/ericchiang/css"
"golang.org/x/net/html"
)
var data = `
<p>
<h2 id="foo">a header</h2>
<h2 id="bar">another header</h2>
</p>`
func main() {
sel, err := css.Compile("h2#foo")
if err != nil {
panic(err)
}
node, err := html.Parse(strings.NewReader(data))
if err != nil {
panic(err)
}
for _, ele := range sel.Select(node) {
html.Render(os.Stdout, ele)
}
fmt.Println()
}
$ go run example/css.go
<h2 id="foo">a header</h2>
Details
This package implements the W3 Selectors Level 3 specification. The exact grammar can be found in the grammar.txt file.
Documentation
¶
Overview ¶
Package css implements CSS selector HTML search.
The syntax is that select accepted is the CSS Selector Level 3 spec which is described at https://www.w3.org/TR/css3-selectors/. The parsing grammar is defined the grammar.txt file found within the package.
Selectors compiled by this package search through golang.org/x/net/html nodes and should be used in conjunction with that package.
data := `<p>
<h2 id="foo">a header</h2>
<h2 id="bar">another header</h2>
</p>`
sel, err := css.Compile("h2#foo")
if err != nil {
// handle error
}
node, err := html.Parse(strings.NewReader(data))
if err != nil {
// handle error
}
elements := sel.Select(node)
Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type Selector ¶
type Selector struct {
// contains filtered or unexported fields
}
func MustCompile ¶
type SyntaxError ¶
type SyntaxError struct {
Offset int
// contains filtered or unexported fields
}
func (*SyntaxError) Error ¶
func (s *SyntaxError) Error() string
Source Files
Click to show internal directories.
Click to hide internal directories.