예제 #1
0
// Puttting it all together
func Dedup(oURL *url.URL,
	least3Files []repo.FullArticle, lg loghttp.FuncBufUniv, fs fsi.FileSystem) *html.Node {

	opts := domclean2.CleaningOptions{Proxify: true, Beautify: true}
	// opts.FNamer = fNamer
	opts.AddOutline = true
	// opts.RemoteHost = fetch.HostFromStringUrl(least3Files[0].Url)
	opts.RemoteHost = oURL.Host

	//
	// domclean
	for i := 0; i < len(least3Files); i++ {

		fNamer := domclean2.FileNamer(logDir, i)
		fNamer() // first call yields key

		lg("cleaning %4.1fkB from %v", float64(len(least3Files[i].Body))/1024,
			stringspb.ToLenR(least3Files[i].Url, 60))

		doc, err := domclean2.DomClean(least3Files[i].Body, opts)
		lg(err)

		fileDump(lg, fs, doc, fNamer, ".html")

	}

	if false {
		//
		// Textify with brute force
		for i := 0; i < len(least3Files); i++ {

			fNamer := domclean2.FileNamer(logDir, i)
			fNamer() // first call yields key

			bts, err := fs.ReadFile(fNamer() + ".html")
			lg(err)
			doc, err := html.Parse(bytes.NewReader(bts))
			lg(err)

			textifyBruteForce(doc)

			var buf bytes.Buffer
			err = html.Render(&buf, doc)
			lg(err)

			b := buf.Bytes()
			b = bytes.Replace(b, []byte("[br]"), []byte("\n"), -1)

			fileDump(lg, fs, b, fNamer, "_raw.txt")
		}
	}

	//
	// Textify with more finetuning.
	// Save result to memory.
	textsByArticOutl := map[string][]*TextifiedTree{}
	for i := 0; i < len(least3Files); i++ {

		fNamer := domclean2.FileNamer(logDir, i)
		fnKey := fNamer() // first call yields key

		bts, err := fs.ReadFile(fNamer() + ".html")

		doc, err := html.Parse(bytes.NewReader(bts))
		lg(err)

		fNamer() // one more

		//
		mp, bts := BubbledUpTextExtraction(doc, fnKey)
		fileDump(lg, fs, bts, fNamer, ".txt")

		mpSorted, dump := orderByOutline(mp)
		fileDump(lg, fs, dump, fNamer, ".txt")
		textsByArticOutl[fnKey] = mpSorted

		// for k, v := range mpSorted {
		// 	if k%33 != 0 {
		// 		continue
		// 	}
		// 	log.Printf("%3v: %v %14v  %v\n", k, v.SourceID, v.Outline, v.Lvl)
		// }

	}

	//
	//
	// We progress from level 1 downwards.
	// Lower levels skip weeded out higher levels,
	// to save expensive levenshtein comparisons
	var skipPrefixes = map[string]bool{}
	for weedStage := 1; weedStage <= stageMax; weedStage++ {

		fNamer := domclean2.FileNamer(logDir, 0)
		fnKey := fNamer() // first call yields key

		levelsToProcess = map[int]bool{weedStage: true}
		frags := similarTextifiedTrees(textsByArticOutl, skipPrefixes, map[string]bool{fnKey: true})

		similaritiesToFile(fs, logDir, frags, weedStage)

		for _, frag := range frags {
			if len(frag.Similars) >= numTotal-1 &&
				frag.SumRelLevenshtein/(numTotal-1) < 0.2 {
				skipPrefixes[frag.Outline+"."] = true
			}
		}
		b := new(bytes.Buffer)
		for k, _ := range skipPrefixes {
			b.WriteString(k)
			b.WriteByte(32)
		}
		// log.Printf("%v\n", b.String())

	}

	//
	// Apply dedup
	fNamer := domclean2.FileNamer(logDir, 0)
	fNamer() // first call yields key

	bts, err := fs.ReadFile(fNamer() + ".html")
	lg(err)
	doc, err := html.Parse(bytes.NewReader(bts))
	lg(err)

	dedupApply(doc, skipPrefixes)

	// A special after dedup cleaning:
	// Remove ol and cfrm attributes
	var fr func(*html.Node)
	fr = func(n *html.Node) {
		if n.Type == html.ElementNode {
			attr2 := make([]html.Attribute, 0, len(n.Attr))
			for _, attr := range n.Attr {
				if attr.Key != "ol" && attr.Key != "cfrm" {
					attr2 = append(attr2, attr)
				}
			}
			n.Attr = attr2
		}
		for c := n.FirstChild; c != nil; c = c.NextSibling {
			fr(c)
		}
	}
	fr(doc)

	if false {
		// does not add value
		var b7 bytes.Buffer
		err := html.Render(&b7, doc)
		lg(err)

		doc, err = domclean2.DomClean(b7.Bytes(), opts)
		lg(err)

	} else {
		domclean2.DomFormat(doc)
	}

	return doc
}
예제 #2
0
// handleFetchURL either displays a form for requesting an url
// or it returns the URL´s contents.
func handleFetchURL(w http.ResponseWriter, r *http.Request, m map[string]interface{}) {

	lg, b := loghttp.BuffLoggerUniversal(w, r)
	_ = b

	// on live server => always use https
	if r.URL.Scheme != "https" && !util_appengine.IsLocalEnviron() {
		r.URL.Scheme = "https"
		r.URL.Host = r.Host
		lg("lo - redirect %v", r.URL.String())
		http.Redirect(w, r, r.URL.String(), http.StatusFound)
	}

	/*
		To distinguish between posted and getted value,
		we check the "post-only" slice of values first.
		If nothing's there, but FormValue *has* a value,
		then it was "getted", otherwise "posted"
	*/
	rURL := ""
	urlAs := ""
	err := r.ParseForm()
	lg(err)
	if r.PostFormValue(routes.URLParamKey) != "" {
		urlAs += "url posted "
		rURL = r.PostFormValue(routes.URLParamKey)
	}

	if r.FormValue(routes.URLParamKey) != "" {
		if rURL == "" {
			urlAs += "url getted "
			rURL = r.FormValue(routes.URLParamKey)
		}
	}
	// lg("received %v:  %q", urlAs, rURL)

	if len(rURL) == 0 {

		tplAdder, tplExec := tplx.FuncTplBuilder(w, r)
		tplAdder("n_html_title", "Fetch some http data", nil)

		m := map[string]string{
			"protocol": "https",
			"host":     r.Host, // not  fetch.HostFromReq(r)
			"path":     routes.ProxifyURI,
			"name":     routes.URLParamKey,
			"val":      "google.com",
		}
		if util_appengine.IsLocalEnviron() {
			m["protocol"] = "http"
		}
		tplAdder("n_cont_0", c_formFetchUrl, m)
		tplExec(w, r)

	} else {

		r.Header.Set("X-Custom-Header-Counter", "nocounter")

		bts, inf, err := fetch.UrlGetter(r, fetch.Options{URL: rURL})
		lg(err)

		tp := mime.TypeByExtension(path.Ext(inf.URL.Path))
		if false {
			ext := path.Ext(rURL)
			ext = strings.ToLower(ext)
			tp = mime.TypeByExtension(ext)
		}
		w.Header().Set("Content-Type", tp)
		// w.Header().Set("Content-type", "text/html; charset=latin-1")

		if r.FormValue("dbg") != "" {
			w.Header().Set("Content-type", "text/html; charset=utf-8")
			fmt.Fprintf(w, "%s<br>\n  %s<br>\n %v", inf.URL.Path, tp, inf.URL.String())
			return
		}

		opts := domclean2.CleaningOptions{Proxify: true}
		opts.Beautify = true // "<a> Linktext without trailing space"
		opts.RemoteHost = fetch.HostFromStringUrl(rURL)

		// opts.ProxyHost = routes.AppHost()
		opts.ProxyHost = fetch.HostFromReq(r)
		if !util_appengine.IsLocalEnviron() {
			opts.ProxyHost = fetch.HostFromReq(r)
		}

		doc, err := domclean2.DomClean(bts, opts)

		var bufRend bytes.Buffer
		err = html.Render(&bufRend, doc)
		lg(err)
		w.Write(bufRend.Bytes())

	}

}