本文整理汇总了Golang中github.com/PuerkitoBio/goquery.Selection.Prev方法的典型用法代码示例。如果您正苦于以下问题：Golang Selection.Prev方法的具体用法？Golang Selection.Prev怎么用？Golang Selection.Prev使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类github.com/PuerkitoBio/goquery.Selection的用法示例。
在下文中一共展示了Selection.Prev方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: walkSiblings
func (this *contentExtractor) walkSiblings(node *goquery.Selection) []*goquery.Selection {
currentSibling := node.Prev()
b := make([]*goquery.Selection, 0)
for currentSibling.Length() != 0 {
b = append(b, currentSibling)
previousSibling := currentSibling.Prev()
currentSibling = previousSibling
}
return b
}示例2: walkSiblings
func (extr *ContentExtractor) walkSiblings(node *goquery.Selection) []*goquery.Selection {
currentSibling := node.Prev()
var b []*goquery.Selection
for currentSibling.Length() != 0 {
b = append(b, currentSibling)
previousSibling := currentSibling.Prev()
currentSibling = previousSibling
}
return b
}示例3: encuentraGrupo
func encuentraGrupo(tabla *goquery.Selection) (grupo int) {
var anterior *goquery.Selection
for anterior = tabla.Prev(); anterior.Length() > 0 && grupo == 0; anterior = anterior.Prev() {
if !anterior.Is("div") {
log.Fatal(errors.New("No se encontró curso para la tabla"))
}
strongs := anterior.Find("strong")
if strongs.Length() != 1 {
continue
}
hayMatch, err := regexp.MatchString("Grupo [0-9]+", strongs.Text())
if err != nil {
mataPrograma("Morí en encuentraGrupo regex", err)
}
if hayMatch {
tokens := strings.Split(strongs.Text(), " ")
grupo, err = strconv.Atoi(tokens[1])
if err != nil {
mataPrograma("Morí en encuentraGrupo hayMatch", err)
}
}
}
return
}示例4: checkLarge
func (e *extractImages) checkLarge(s *goquery.Selection, depth uint) bool {
imgs := s.FindMatcher(imgTags).FilterFunction(
func(i int, s *goquery.Selection) bool {
if i > 30 {
return false
}
src, ok := s.Attr("src")
if !ok {
return false
}
for _, s := range badImgNames {
if strings.Contains(src, s) {
return false
}
}
return true
}).FilterFunction(
func(i int, s *goquery.Selection) bool {
img := e.hitCache(s, "src")
if img == nil {
return false
}
return true
})
rimgs := e.hitCaches(imgs, "src")
if len(rimgs) > 0 {
var bestImg *Image
cnt := 0
initialArea := 0.0
maxScore := 0.0
if len(rimgs) > 30 {
rimgs = rimgs[:30]
}
for _, i := range rimgs {
shouldScore := ((depth >= 1 && i.Width > 300) || depth == 0) &&
i.Width > minImgWidth &&
!e.isBannerDims(i)
if !shouldScore {
continue
}
area := float64(i.Width * i.Height)
score := 0.0
if initialArea == 0.0 {
initialArea = area * 1.48
score = 1.0
} else {
areaDiff := area / initialArea
sequenceScore := 1.0 / float64(cnt)
score = sequenceScore * areaDiff
}
if score > maxScore {
maxScore = score
bestImg = i
}
cnt++
}
if bestImg != nil {
bestImg.Confidence = uint(100 / len(rimgs))
e.a.Img = bestImg
return true
}
}
if depth > 2 {
return false
}
prev := s.Prev()
if prev.Length() > 0 {
return e.checkLarge(prev, depth)
}
par := s.Parent()
if par.Length() > 0 {
return e.checkLarge(par, depth+1)
}
return false
}