How to use HasAttributes method of html Package

Best K6 code snippet using html.HasAttributes

sanitize.go

Source:sanitize.go Github

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1package blackfriday2import (3 "bufio"4 "bytes"5 "code.google.com/p/go.net/html"6 "fmt"7 "io"8)9// Whitelisted element tags, attributes on particular tags, attributes that are10// interpreted as protocols (again on particular tags), and allowed protocols.11var (12 whitelistTags map[string]bool13 whitelistAttrs map[string]map[string]bool14 protocolAttrs map[string]map[string]bool15 whitelistProtocols [][]byte16)17func init() {18 whitelistTags = toSet([]string{19 // Headings20 "h1", "h2", "h3", "h4", "h5", "h6",21 // Block elements22 "p", "pre", "blockquote", "hr", "div", "header", "article", "aside", "footer",23 "section", "main", "mark", "figure", "figcaption",24 // Inline elements25 "a", "br", "cite", "code", "img",26 // Lists27 "ol", "ul", "li",28 // Tables29 "table", "tbody", "td", "tfoot", "th", "thead", "tr", "colgroup", "col", "caption",30 // Formatting31 "u", "i", "em", "small", "strike", "b", "strong", "sub", "sup", "q",32 // Definition lists33 "dd", "dl", "dt",34 })35 whitelistAttrs = map[string]map[string]bool{36 "a": toSet([]string{"href", "title", "rel"}),37 "img": toSet([]string{"src", "alt", "title"}),38 "td": toSet([]string{"align"}),39 "th": toSet([]string{"align"}),40 }41 protocolAttrs = map[string]map[string]bool{42 "a": toSet([]string{"href"}),43 "img": toSet([]string{"src"}),44 }45 whitelistProtocols = [][]byte{46 []byte("http://"),47 []byte("https://"),48 []byte("ftp://"),49 []byte("mailto:"),50 }51}52func toSet(keys []string) map[string]bool {53 m := make(map[string]bool, len(keys))54 for _, k := range keys {55 m[k] = true56 }57 return m58}59// Sanitizes the given input by parsing it as HTML5, then whitelisting known to60// be safe elements and attributes. All other HTML is escaped, unsafe attributes61// are stripped.62func sanitizeHtmlSafe(input []byte) []byte {63 r := bytes.NewReader(input)64 var w bytes.Buffer65 tokenizer := html.NewTokenizer(r)66 wr := bufio.NewWriter(&w)67 // Iterate through all tokens in the input stream and sanitize them.68 for t := tokenizer.Next(); t != html.ErrorToken; t = tokenizer.Next() {69 switch t {70 case html.TextToken:71 // Text is written escaped.72 wr.WriteString(tokenizer.Token().String())73 case html.SelfClosingTagToken, html.StartTagToken:74 // HTML tags are escaped unless whitelisted.75 tag, hasAttributes := tokenizer.TagName()76 tagName := string(tag)77 if whitelistTags[tagName] {78 wr.WriteString("<")79 wr.Write(tag)80 for hasAttributes {81 var key, val []byte82 key, val, hasAttributes = tokenizer.TagAttr()83 attrName := string(key)84 // Only include whitelisted attributes for the given tagName.85 tagWhitelistedAttrs, ok := whitelistAttrs[tagName]86 if ok && tagWhitelistedAttrs[attrName] {87 // For whitelisted attributes, if it's an attribute that requires88 // protocol checking, do so and strip it if it's not known to be safe.89 tagProtocolAttrs, ok := protocolAttrs[tagName]90 if ok && tagProtocolAttrs[attrName] {91 if !isRelativeLink(val) && !protocolAllowed(val) {92 continue93 }94 }95 wr.WriteByte(' ')96 wr.Write(key)97 wr.WriteString(`="`)98 wr.WriteString(html.EscapeString(string(val)))99 wr.WriteByte('"')100 }101 }102 if t == html.SelfClosingTagToken {103 wr.WriteString("/>")104 } else {105 wr.WriteString(">")106 }107 } else {108 wr.WriteString(html.EscapeString(string(tokenizer.Raw())))109 }110 // Make sure that tags like <script> that switch the parser into raw mode111 // do not destroy the parse mode for following HTML text (the point is to112 // escape them anyway). For that, switch off raw mode in the tokenizer.113 tokenizer.NextIsNotRawText()114 case html.EndTagToken:115 // Whitelisted tokens can be written in raw.116 tag, _ := tokenizer.TagName()117 if whitelistTags[string(tag)] {118 wr.Write(tokenizer.Raw())119 } else {120 wr.WriteString(html.EscapeString(string(tokenizer.Raw())))121 }122 case html.CommentToken:123 // Comments are not really expected, but harmless.124 wr.Write(tokenizer.Raw())125 case html.DoctypeToken:126 // Escape DOCTYPES, entities etc can be dangerous127 wr.WriteString(html.EscapeString(string(tokenizer.Raw())))128 default:129 tokenizer.Token()130 panic(fmt.Errorf("Unexpected token type %v", t))131 }132 }133 err := tokenizer.Err()134 if err != nil && err != io.EOF {135 panic(tokenizer.Err())136 }137 wr.Flush()138 return w.Bytes()139}140func protocolAllowed(attr []byte) bool {141 for _, prefix := range whitelistProtocols {142 if bytes.HasPrefix(attr, prefix) {143 return true144 }145 }146 return false147}...

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htmlutil.go

Source:htmlutil.go Github

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...79}80// FindNodeWithAttributes is a depth-first search for the first node of the given type with the given attributes81func FindNodeWithAttributes(n *html.Node, a atom.Atom, attr map[string]string) *html.Node {82 for c := n.FirstChild; c != nil; c = c.NextSibling {83 if c.DataAtom == a && HasAttributes(c, attr) {84 return c85 }86 gc := FindNodeWithAttributes(c, a, attr)87 if gc != nil {88 return gc89 }90 }91 return nil92}93// HasAttributes returns true if the given node has all the attribute values94func HasAttributes(n *html.Node, attr map[string]string) bool {95 for key, value := range attr {96 if GetAttribute(n, key) != value {97 return false98 }99 }100 return true101}102// FindNodes returns all child nodes of the given type103func FindNodes(n *html.Node, a atom.Atom) []*html.Node {104 return FindNodesWithAttributes(n, a, nil)105}106// FindNodesWithAttributes returns all child nodes of the given type with the given attributes107func FindNodesWithAttributes(n *html.Node, a atom.Atom, attr map[string]string) []*html.Node {108 var result []*html.Node109 for c := n.FirstChild; c != nil; c = c.NextSibling {110 if c.DataAtom == a && HasAttributes(c, attr) {111 result = append(result, c)112 }113 result = append(result, FindNodesWithAttributes(c, a, attr)...)114 }115 return result116}117// FindAllNodes returns all child nodes of any of the given types, in the order in which they are found (a depth-first search)118func FindAllNodes(n *html.Node, all ...atom.Atom) []*html.Node {119 var result []*html.Node120 for c := n.FirstChild; c != nil; c = c.NextSibling {121 for _, a := range all {122 if c.DataAtom == a {123 result = append(result, c)124 break...

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HasAttributes

Using AI Code Generation

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1import (2func main() {3 doc, err := html.Parse(os.Stdin)4 if err != nil {5 fmt.Fprintf(os.Stderr, "findlinks1:%v\n", err)6 os.Exit(1)7 }8 for _, link := range visit(nil, doc) {9 fmt.Println(link)10 }11}12func visit(links []string, n *html.Node) []string {13 if n.Type == html.ElementNode && n.Data == "a" && hasAttributes(n.Attr, "href") {14 for _, a := range n.Attr {15 if a.Key == "href" {16 links = append(links, a.Val)17 }18 }19 }20 if n.FirstChild != nil {21 links = visit(links, n.FirstChild)22 }23 if n.NextSibling != nil {24 links = visit(links, n.NextSibling)25 }26}27func hasAttributes(attrs []html.Attribute, key string) bool {28 for _, attr := range attrs {29 if attr.Key == key {30 }31 }32}

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HasAttributes

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1import (2func main() {3 f, err := os.Open("1.html")4 if err != nil {5 fmt.Println(err)6 }7 defer f.Close()8 doc, err := html.Parse(f)9 if err != nil {10 fmt.Println(err)11 }12 fmt.Println(HasAttributes(doc, "id", "main"))13}14func HasAttributes(n *html.Node, key, val string) bool {15 if n == nil {16 }17 for _, a := range n.Attr {18 if a.Key == key && a.Val == val {19 }20 }21}

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HasAttributes

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1import (2func main() {3 resp, err := http.Get(os.Args[1])4 if err != nil {5 fmt.Println(err)6 }7 defer resp.Body.Close()8 doc, err := html.Parse(resp.Body)9 if err != nil {10 fmt.Println(err)11 }12 for _, link := range visit(nil, doc) {13 fmt.Println(link)14 }15}16func visit(links []string, n *html.Node) []string {17 if n.Type == html.ElementNode && n.Data == "script" && n.Attr[0].Key == "src" {18 links = append(links, n.Attr[0].Val)19 }20 for c := n.FirstChild; c != nil; c = c.NextSibling {21 links = visit(links, c)22 }23}

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HasAttributes

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1import (2func main() {3 f, err := os.Open("1.html")4 if err != nil {5 panic(err)6 }7 defer f.Close()8 doc, err := html.Parse(f)9 if err != nil {10 panic(err)11 }12 fmt.Println("HasAttributes: ", html.HasAttributes(doc))13}

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HasAttributes

Using AI Code Generation

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1import (2func main() {3 if err != nil {4 fmt.Fprintln(os.Stderr, "http.Get:", err)5 }6 defer response.Body.Close()7 document, err := goquery.NewDocumentFromReader(response.Body)8 if err != nil {9 fmt.Fprintln(os.Stderr, "goquery.NewDocumentFromReader:", err)10 }11 document.Find(".review").Each(func(index int, element *goquery.Selection) {12 band := element.Find("b").Text()13 title := element.Find("i").Text()14 fmt.Printf("Review %d: %s - %s\n", index, band, title)15 })16}

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HasAttributes

Using AI Code Generation

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1import (2func main() {3 if err != nil {4 log.Fatal(err)5 }6 defer resp.Body.Close()7 doc, err := html.Parse(resp.Body)8 if err != nil {9 log.Fatal(err)10 }11 fmt.Println("HasAttributes:", html.HasAttributes(doc))12}13import (14func main() {15 if err != nil {16 log.Fatal(err)17 }18 defer resp.Body.Close()19 doc, err := html.Parse(resp.Body)20 if err != nil {21 log.Fatal(err)22 }23 fmt.Println("HasChildren:", html.HasChildren(doc))24}25import (26func main() {27 if err != nil {28 log.Fatal(err)29 }30 defer resp.Body.Close()31 doc, err := html.Parse(resp.Body)32 if err != nil {33 log.Fatal(err)34 }35 fmt.Println("Parse:", doc)36}37Parse: &{Document <nil> [] []}38import (39func main() {40 if err != nil {41 log.Fatal(err)42 }43 defer resp.Body.Close()

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HasAttributes

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1import (2func main() {3 f, err := os.Open("1.html")4 if err != nil {5 log.Fatal(err)6 }7 defer f.Close()8 data, err := ioutil.ReadAll(f)9 if err != nil {10 log.Fatal(err)11 }12 doc, err := html.Parse(nil)13 if err != nil {14 log.Fatal(err)15 }16 links := findLinks(doc)17 for _, link := range links {18 fmt.Println(link)19 }20}21func findLinks(n *html.Node) []string {22 if n.Type == html.ElementNode && n.Data == "a" {23 links = append(links, n.Attr[0].Val)24 }25 for c := n.FirstChild; c != nil; c = c.NextSibling {26 links = append(links, findLinks(c)...)27 }28}

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HasAttributes

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1import (2func HasAttributes(n *html.Node, key string) bool {3 for _, a := range n.Attr {4 if a.Key == key {5 }6 }7}8func main() {9 if err != nil {10 fmt.Println(err)11 }12 defer res.Body.Close()13 htmlData, err := ioutil.ReadAll(res.Body)14 if err != nil {15 fmt.Println(err)16 }17 doc, err := html.Parse(strings.NewReader(string(htmlData)))18 if err != nil {19 fmt.Println(err)20 }21 fmt.Println(HasAttributes(doc, "href"))22}

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HasAttributes

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1import (2func HasAttributes(n *html.Node, attr ...string) bool {3 for _, a := range attr {4 if n.Attr == nil {5 }6 for _, at := range n.Attr {7 if at.Key == a {8 }9 }10 }11}12func main() {13 if err != nil {14 fmt.Println(err)15 os.Exit(1)16 }17 defer resp.Body.Close()18 if resp.StatusCode != http.StatusOK {19 fmt.Println("Error: ", resp.Status)20 os.Exit(1)21 }22 doc, err := html.Parse(resp.Body)23 if err != nil {24 fmt.Println(err)25 os.Exit(1)26 }27 fmt.Println(HasAttributes(doc, "href"))28}

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HasAttributes

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1import (2func main() {3 if len(os.Args) < 2 {4 fmt.Println("Please provide a URL")5 os.Exit(1)6 }7 resp, err := http.Get(url)8 if err != nil {9 fmt.Println(err)10 os.Exit(1)11 }12 defer resp.Body.Close()13 body, err := ioutil.ReadAll(resp.Body)14 if err != nil {15 fmt.Println(err)16 os.Exit(1)17 }18 root, err := html.Parse(strings.NewReader(string(body)))19 if err != nil {20 fmt.Println(err)21 os.Exit(1)22 }23 links := getLinks(root)24 for _, link := range links {25 fmt.Println(link)26 }27}28func getLinks(root *html.Node) []string {29 if root.Type == html.ElementNode {30 if root.Data == "a" {31 if hasAttributes(root, "href") {32 return []string{getAttributes(root, "href")}33 }34 }35 }36 links := []string{}37 for child := root.FirstChild; child != nil; child = child.NextSibling {38 links = append(links, getLinks(child)...)39 }40}41func hasAttributes(root *html.Node, attr string) bool {42 for _, a := range root.Attr {43 if a.Key == attr {44 }45 }46}47func getAttributes(root *html.Node,

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