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Automation Advisor
K6
html
HasAttributes

How to use HasAttributes method of html Package

Best K6 code snippet using html.HasAttributes

sanitize.go

Source:sanitize.go

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}...

htmlutil.go

Source:htmlutil.go

...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...

HasAttributes

Using AI Code Generation

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}

HasAttributes

Using AI Code Generation

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}

HasAttributes

Using AI Code Generation

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}

HasAttributes

Using AI Code Generation

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}

HasAttributes

Using AI Code Generation

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}

HasAttributes

Using AI Code Generation

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()

HasAttributes

Using AI Code Generation

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}

HasAttributes

Using AI Code Generation

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}

HasAttributes

Using AI Code Generation

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}

HasAttributes

Using AI Code Generation

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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