98 lines
1.9 KiB
Go
98 lines
1.9 KiB
Go
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package web
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import (
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"net/http"
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"strconv"
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"github.com/PuerkitoBio/goquery"
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)
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var bingURL = urlMustParse("https://www.bing.com/search?count=10")
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type Bing struct {
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keyword string
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userAgent string
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first int
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doc *goquery.Document
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initDone bool
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baseSel *goquery.Selection
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}
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func (b *Bing) SetKeyword(keyword string) {
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b.keyword = keyword
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}
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func (b *Bing) SetPage(page int) {
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b.first = page * 10
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}
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func (b *Bing) SetUserAgent(ua string) {
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b.userAgent = ua
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}
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func (b *Bing) Init() error {
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initURL := copyURL(bingURL)
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query := initURL.Query()
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query.Set("q", b.keyword)
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if b.first > 0 {
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query.Set("first", strconv.Itoa(b.first))
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} else {
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query.Set("first", "1")
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}
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initURL.RawQuery = query.Encode()
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req, err := http.NewRequest(
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http.MethodGet,
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initURL.String(),
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nil,
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)
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if err != nil {
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return err
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}
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if b.userAgent == "" {
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b.userAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36"
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}
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req.Header.Set("User-Agent", b.userAgent)
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res, err := http.DefaultClient.Do(req)
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if err != nil {
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return err
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}
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defer res.Body.Close()
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doc, err := goquery.NewDocumentFromReader(res.Body)
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if err != nil {
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return err
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}
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b.doc = doc
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b.baseSel = doc.Find(`#b_results > li`)
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b.initDone = true
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return nil
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}
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func (b *Bing) Each(eachCb func(int) error) error {
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for i := 0; i < b.baseSel.Length(); i++ {
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err := eachCb(i)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func (b *Bing) Title(i int) (string, error) {
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return get(b.baseSel, i).ChildrenFiltered("h2").Children().First().Text(), nil
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}
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func (b *Bing) Link(i int) (string, error) {
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return get(b.baseSel, i).ChildrenFiltered("h2").Children().First().AttrOr("href", ""), nil
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}
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func (b *Bing) Desc(i int) (string, error) {
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return get(b.baseSel, i).ChildrenFiltered(".b_caption").Children().Last().Text(), nil
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}
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func (b *Bing) Name() string {
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return "bing"
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}
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