func (b baiduNews) findP(html *goquery.Selection) *goquery.Selection {
if html.Is("body") {
return html
} else if result := html.Parent().Find("p"); len(result.Nodes) == 0 {
return b.findP(html.Parent())
} else {
return html.Parent()
}
}
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
}
func (d *Document) scoreNode(s *goquery.Selection) *candidate {
contentScore := d.classWeight(s)
if s.Is("div") {
contentScore += 5
} else if s.Is("blockquote,form") {
contentScore = 3
} else if s.Is("th") {
contentScore -= 5
}
return &candidate{s, float32(contentScore)}
}
func (d *Document) cleanConditionally(s *goquery.Selection, selector string) {
if !d.CleanConditionally {
return
}
s.Find(selector).Each(func(i int, s *goquery.Selection) {
node := s.Get(0)
weight := float32(d.classWeight(s))
contentScore := float32(0)
if c, ok := d.candidates[node]; ok {
contentScore = c.score
}
if weight+contentScore < 0 {
removeNodes(s)
Logger.Printf("Conditionally cleaned %s%s with weight %f and content score %f\n", node.Data, getName(s), weight, contentScore)
return
}
text := s.Text()
if strings.Count(text, ",") < 10 {
counts := map[string]int{
"p": s.Find("p").Length(),
"img": s.Find("img").Length(),
"li": s.Find("li").Length() - 100,
"a": s.Find("a").Length(),
"embed": s.Find("embed").Length(),
"input": s.Find("input").Length(),
}
contentLength := len(strings.TrimSpace(text))
linkDensity := d.getLinkDensity(s)
remove := false
reason := ""
if counts["img"] > counts["p"] {
reason = "too many images"
remove = true
} else if counts["li"] > counts["p"] && !s.Is("ul,ol") {
reason = "more <li>s than <p>s"
remove = true
} else if counts["input"] > int(counts["p"]/3.0) {
reason = "less than 3x <p>s than <input>s"
remove = true
} else if contentLength < d.MinTextLength && (counts["img"] == 0 || counts["img"] > 2) {
reason = "too short content length without a single image"
remove = true
} else if weight < 25 && linkDensity > 0.2 {
reason = fmt.Sprintf("too many links for its weight (%f)", weight)
remove = true
} else if weight >= 25 && linkDensity > 0.5 {
reason = fmt.Sprintf("too many links for its weight (%f)", weight)
remove = true
} else if (counts["embed"] == 1 && contentLength < 75) || counts["embed"] > 1 {
reason = "<embed>s with too short a content length, or too many <embed>s"
remove = true
}
if remove {
Logger.Printf("Conditionally cleaned %s%s with weight %f and content score %f because it has %s\n", node.Data, getName(s), weight, contentScore, reason)
removeNodes(s)
}
}
})
}