Ejemplo n.º 1
0
func xstatsmeta(q *Context) {

	var errval error
	var download bool
	var db *dbxml.Db
	var docs, docs2 *dbxml.Docs
	defer func() {
		if docs2 != nil {
			docs2.Close()
		}
		if docs != nil {
			docs.Close()
		}
		if db != nil {
			db.Close()
		}
		if errval != nil {
			updateError(q, errval, !download)
		}
		completedmeta(q, download)
		if !download {
			fmt.Fprintln(q.w, "</body>\n</html>")
		}
	}()

	var rows *sql.Rows

	now := time.Now()
	now2 := time.Now()

	if first(q.r, "d") != "" {
		download = true
	}

	itemselect := first(q.r, "item")

	methode := first(q.r, "mt")
	if methode != "dx" {
		methode = "std"
	}

	if download {
		contentType(q, "text/plain; charset=utf-8")
		q.w.Header().Set("Content-Disposition", "attachment; filename=telling.txt")
		cache(q)
	} else {
		contentType(q, "text/html; charset=utf-8")
		cache(q)
		fmt.Fprint(q.w, `<!DOCTYPE html>
<html>
<head>
<title></title>
<script type="text/javascript"><!--
function setvalue(n) {
    window.parent._fn.setmetaval(n);
}
function setmetavars(idx, lbl, fl, max, ac, bc) {
    window.parent._fn.setmetavars(idx, lbl, fl, max, ac, bc);
}
function setmetalines(idx, a, b) {
    window.parent._fn.setmetalines(idx, a, b);
}
function makemetatable(idx) {
    window.parent._fn.makemetatable(idx);
}
function f(s) {
    window.parent._fn.updatemeta(s);
}
function f1(s) {
    window.parent._fn.updatemetatop(s);
}
function c(i, j) {
    window.parent._fn.countmeta(i, j);
}
//--></script>
</head>
<body>
<script type="text/javascript">
window.parent._fn.startedmeta();
c("0", "0");
</script>
`)
		if ff, ok := q.w.(http.Flusher); ok {
			ff.Flush()
		}
	}

	prefix := getprefix(q)
	if !q.prefixes[prefix] {
		if download {
			fmt.Fprintf(q.w, "Invalid corpus: "+prefix)
		} else {
			updateText(q, "Invalid corpus: "+html.EscapeString(prefix))
		}
		return
	}

	query := first(q.r, "xpath")

	if query == "" {
		if download {
			fmt.Fprintln(q.w, "Query ontbreekt")
		} else {
			updateText(q, "Query ontbreekt")
		}
		return
	}

	if strings.Contains(query, "%") {
		rules := getMacrosRules(q)
		query = macroKY.ReplaceAllStringFunc(query, func(s string) string {
			return rules[s[1:len(s)-1]]
		})
	}

	var owner string
	var nlines uint64
	rows, errval = q.db.Query(fmt.Sprintf("SELECT `owner`,`nline` FROM `%s_info` WHERE `id` = %q", Cfg.Prefix, prefix))
	if logerr(errval) {
		return
	}
	for rows.Next() {
		errval = rows.Scan(&owner, &nlines)
		if logerr(errval) {
			rows.Close()
			return
		}
	}
	errval = rows.Err()
	if logerr(errval) {
		return
	}

	dactfiles := make([]string, 0)
	if strings.Contains(owner, "@") {
		dactfiles = append(dactfiles, filepath.Join(paqudir, "data", prefix, "data.dact"))
	} else {
		rows, errval = q.db.Query(fmt.Sprintf("SELECT `arch` FROM `%s_c_%s_arch` ORDER BY `id`", Cfg.Prefix, prefix))
		if logerr(errval) {
			return
		}
		for rows.Next() {
			var s string
			errval = rows.Scan(&s)
			if logerr(errval) {
				rows.Close()
				return
			}
			if strings.HasSuffix(s, ".dact") {
				dactfiles = append(dactfiles, s)
			}
		}
		errval = rows.Err()
		if logerr(errval) {
			return
		}
	}

	if len(dactfiles) == 0 {
		if download {
			fmt.Fprintln(q.w, "Er zijn geen dact-bestanden voor dit corpus")
		} else {
			updateText(q, "Er zijn geen dact-bestanden voor dit corpus")
		}
		return
	}

	if !q.hasmeta[prefix] {
		if download {
			fmt.Fprintln(q.w, "Geen metadata voor dit corpus")
		} else {
			updateText(q, "Geen metadata voor dit corpus")
		}
		return
	}
	metas := getMeta(q, prefix)
	metat := make(map[string]string)
	metai := make(map[string]int)
	tranges := make(map[string]map[string]int)
	dranges := make(map[string]*drange)
	franges := make(map[string]*frange)
	iranges := make(map[string]*irange)
	for _, m := range metas {
		metat[m.name] = m.mtype
		metai[m.name] = m.id
		if m.mtype == "TEXT" {
			tranges[m.name] = make(map[string]int)
			rows, errval = q.db.Query(fmt.Sprintf(
				"SELECT `idx`,`text` FROM `%s_c_%s_mval` WHERE `id` = %d",
				Cfg.Prefix, prefix, m.id))
			if logerr(errval) {
				return
			}
			for rows.Next() {
				var t string
				var i int
				errval = rows.Scan(&i, &t)
				if logerr(errval) {
					rows.Close()
					return
				}
				tranges[m.name][t] = i
			}
			errval = rows.Err()
			if logerr(errval) {
				return
			}
			continue
		}
		var indexed bool
		var size, dtype, imin, istep int
		var dmin, dmax time.Time
		var fmin, fstep float64
		row := q.db.QueryRow(fmt.Sprintf(
			"SELECT `indexed`, `size`, `dmin`, `dmax`, `dtype`, `fmin`, `fstep`, `imin`, `istep` FROM `%s_c_%s_minf` WHERE `id` = %d",
			Cfg.Prefix, prefix, m.id))
		errval = row.Scan(&indexed, &size, &dmin, &dmax, &dtype, &fmin, &fstep, &imin, &istep)
		if logerr(errval) {
			return
		}
		switch m.mtype {
		case "INT":
			iranges[m.name] = oldIrange(imin, istep, size, indexed)
		case "FLOAT":
			franges[m.name] = oldFrange(fmin, fstep, size)
		case "DATE", "DATETIME":
			dranges[m.name] = oldDrange(dmin, dmax, dtype, indexed)
		}
	} // for _, m := range metas

	queryparts := strings.Split(query, "+|+")

	telling := make(map[string]map[string][3]int)
	for _, m := range metas {
		telling[m.name] = make(map[string][3]int)
	}

	seen := make(map[string]bool)

	var chClose <-chan bool
	if f, ok := q.w.(http.CloseNotifier); ok {
		chClose = f.CloseNotify()
	} else {
		chClose = make(<-chan bool)
	}

	counter := 0
	for _, dactfile := range dactfiles {
		if !download && time.Now().Sub(now2) > 2*time.Second {
			updateCount(q, counter, len(seen))
			now2 = time.Now()
		}
		select {
		case <-chClose:
			logerr(errConnectionClosed)
			return
		default:
		}
		if Cfg.Dactx && methode == "dx" {
			dactfile += "x"
		}
		db, errval = dbxml.Open(dactfile)
		if logerr(errval) {
			return
		}

		var qu *dbxml.Query
		qu, errval = db.Prepare(queryparts[0])
		if logerr(errval) {
			return
		}
		done := make(chan bool, 1)
		interrupted := make(chan bool, 1)
		go func() {
			select {
			case <-chClose:
				interrupted <- true
				logerr(errConnectionClosed)
				qu.Cancel()
			case <-done:
			}
		}()

		docs, errval = qu.Run()
		if logerr(errval) {
			return
		}
		filename := ""
		var seenId map[string]bool
	NEXTDOC:
		for docs.Next() {
			if !download && time.Now().Sub(now2) > 2*time.Second {
				updateCount(q, counter, len(seen))
				now2 = time.Now()
			}
			matches := 0
			if len(queryparts) == 1 {
				name := docs.Name()
				if name != filename {
					filename = name
					seenId = make(map[string]bool)
				}
				alp := Alpino_ds{}
				errval = xml.Unmarshal([]byte(`<?xml version="1.0" encoding="UTF-8"?>
<alpino_ds version="1.3">
`+docs.Match()+`
</alpino_ds>`), &alp)
				if logerr(errval) {
					return
				}
				sid := ""
				if alp.Node0 != nil {
					sid = alp.Node0.Id
					if alp.Node0.OtherId != "" {
						sid = alp.Node0.OtherId
					}
				}
				if !seenId[sid] {
					matches = 1
					seenId[sid] = true
				}
			} else {
				name := docs.Name()
				if name == filename {
					continue
				}
				filename = name
				seenId = make(map[string]bool)
				doctxt := fmt.Sprintf("[dbxml:metadata('dbxml:name')=%q]", filename)
				for i := 1; i < len(queryparts)-1; i++ {
					docs2, errval = db.Query(doctxt + queryparts[i])
					if logerr(errval) {
						return
					}
					if !docs2.Next() {
						docs2 = nil
						continue NEXTDOC
					}
					docs2.Close()
					docs2 = nil
				}

				docs2, errval = db.Query(doctxt + queryparts[len(queryparts)-1])
				if logerr(errval) {
					return
				}
				for docs2.Next() {
					alp := Alpino_ds{}
					errval = xml.Unmarshal([]byte(`<?xml version="1.0" encoding="UTF-8"?>
<alpino_ds version="1.3">
`+docs2.Match()+`
</alpino_ds>`), &alp)
					if logerr(errval) {
						return
					}
					sid := ""
					if alp.Node0 != nil {
						sid = alp.Node0.Id
						if alp.Node0.OtherId != "" {
							sid = alp.Node0.OtherId
						}
					}
					if !seenId[sid] {
						seenId[sid] = true
						matches++
					}
				}
				docs2 = nil
			}

			if matches == 0 {
				continue
			}

			counter += matches

			alpino := Alpino_ds_meta{}
			errval = xml.Unmarshal([]byte(docs.Content()), &alpino)
			if logerr(errval) {
				return
			}

			values := make(map[string][]string)
			for _, m := range metas {
				values[m.name] = make([]string, 0)
			}
			for _, m := range alpino.Meta {
				values[m.Name] = append(values[m.Name], m.Value)
			}
			for _, m := range metas {
				if len(values[m.name]) == 0 {
					values[m.name] = append(values[m.name], "")
				}
			}
			f := dactfile + "\t" + docs.Name()
			c := 0
			if !seen[f] {
				seen[f] = true
				c = 1
			}
			for name := range values {
				for _, value := range values[name] {
					var idx int
					if value == "" {
						idx = 2147483647
					} else {
						switch metat[name] {
						case "TEXT":
							idx = tranges[name][value]
						case "INT":
							v, _ := strconv.Atoi(value)
							value, idx = iranges[name].value(v)
						case "FLOAT":
							v, _ := strconv.ParseFloat(value, 32) // 32 is dezelfde precisie als gebruikt door MySQL
							value, idx = franges[name].value(v)
						case "DATE":
							v, _ := time.Parse("2006-01-02", value)
							value, idx = dranges[name].value(v)
						case "DATETIME":
							v, _ := time.Parse("2006-01-02 15:04", value)
							value, idx = dranges[name].value(v)
						}
					}
					telling[name][value] = [3]int{idx, telling[name][value][1] + matches, telling[name][value][2] + c}
				}
			}

		} // for docs.Next()
		errval = docs.Error()
		docs = nil
		if logerr(errval) {
			return
		}
		db.Close()
		db = nil
		done <- true
		select {
		case <-interrupted:
			return
		default:
		}
	} // for _, dactfile := range dactfiles
	if !download {
		updateCount(q, counter, len(seen))
	}

	var buf bytes.Buffer

	pow10 := math.Pow10(int(math.Log10(float64(q.lines[prefix])) + .5))
	if pow10 < 10 {
		pow10 = 10
	}

	if !download {
		fmt.Fprintf(q.w, `<script type="text/javascript">
setvalue(%d);
</script>
`, int(pow10))
	} else {
		fmt.Fprintf(q.w, "# items: %d\n# zinnen: %d\n# n = %d\n", counter, len(seen), int(pow10))
	}

	for number, meta := range metas {
		items := make([]*MetaItem, 0, len(telling[meta.name]))
		for name := range telling[meta.name] {
			items = append(items, &MetaItem{
				text:  name,
				idx:   telling[meta.name][name][0],
				count: [2]int{telling[meta.name][name][1], telling[meta.name][name][2]},
			})
		}
		rows, errval = q.db.Query(fmt.Sprintf(
			"SELECT `idx`, `text`, `n` FROM `%s_c_%s_mval` WHERE `id`=%d ORDER BY `idx`",
			Cfg.Prefix, prefix, metai[meta.name]))
		if logerr(errval) {
			return
		}
		nn := make(map[int]int)
		values := make([]StructIS, 0)
		for rows.Next() {
			var idx, n int
			var txt string
			errval = rows.Scan(&idx, &txt, &n)
			if logerr(errval) {
				rows.Close()
				return
			}
			nn[idx] = n
			values = append(values, StructIS{idx, txt})
		}
		errval = rows.Err()
		if logerr(errval) {
			return
		}

		if !download {
			var hide string
			if itemselect != meta.name {
				hide = " hide"
			}
			var hex string
			for _, c := range meta.name {
				hex += fmt.Sprintf("%04x", uint16(c))
			}
			fmt.Fprintf(&buf, `
<div class="metasub%s" id="meta%s">
<p>
<b>%s</b> &mdash; <a href="javascript:void(0)" onclick="javascript:metahelp()">toelichting bij tabel</a>
<p>
<table>
  <tr>
   <td>per item:
     <table class="right" id="meta%da">
     </table>
   <td class="next">per zin:
     <table class="right" id="meta%db">
     </table>
</table>
</div>
`, hide, hex, html.EscapeString(meta.name), number, number)
			updateText(q, buf.String())
			buf.Reset()

			fl := "right"
			max := 99999
			ac := 1
			bc := 2
			if meta.mtype == "TEXT" {
				fl = "left"
				max = METAMAX
				ac = 0
				bc = 0
			}
			fmt.Fprintf(q.w, `<script type="text/javascript">
setmetavars(%d,"%s","%s",%d,%d,%d);
setmetalines(%d`, number, meta.value, fl, max, ac, bc, number)
		}

		if metat[meta.name] != "TEXT" {
			sort.Sort(MetaItems(items))
		}
		for run := 0; run < 2; run++ {
			if !download {
				fmt.Fprint(q.w, ",[")
			}
			if metat[meta.name] == "TEXT" {
				if run == 0 {
					sort.Sort(MetaItems0(items))
				} else {
					sort.Sort(MetaItems1(items))
				}
			}

			lines := make([]Statline, 0)

			if download {
				if run == 0 {
					fmt.Fprintln(q.w, "# "+meta.name+" per item\t")
				} else {
					fmt.Fprintln(q.w, "# "+meta.name+" per zin\t")
				}
			}
			select {
			case <-chClose:
				logerr(errConnectionClosed)
				return
			default:
			}

			seen := make(map[int]*Statline)
			for _, item := range items {
				lines = append(lines, Statline{item.text, item.count[run], nn[item.idx], item.idx})
				seen[item.idx] = &lines[len(lines)-1]
			}
			if download || (meta.mtype != "TEXT" && len(seen)*NEEDALL > len(values)) {
				// ontbrekende waardes (count==0) toevoegen
				if meta.mtype == "TEXT" {
					for _, v := range values {
						if _, ok := seen[v.i]; !ok {
							lines = append(lines, Statline{v.s, 0, 1, v.i})
						}
					}
				} else {
					lines2 := make([]Statline, len(values))
					for i, v := range values {
						if s, ok := seen[v.i]; ok {
							lines2[i] = *s
						} else {
							lines2[i] = Statline{v.s, 0, 1, v.i}
						}
					}
					lines = lines2
				}
			}
			p := "\n"
			for _, line := range lines {
				if download {
					if run == 1 {
						v := int(.5 + pow10*float64(line.i)/float64(line.n))
						fmt.Fprintf(q.w, "%d\t%d\t%s\n", line.i, v, line.s)
					} else {
						fmt.Fprintf(q.w, "%d\t%s\n", line.i, line.s)
					}
				} else {
					fmt.Fprintf(q.w, "%s[%d,", p, line.i)
					p = ",\n"
					if run == 1 {
						v := int(.5 + pow10*float64(line.i)/float64(line.n))
						fmt.Fprintf(q.w, "%d,", v)
					}
					fmt.Fprintf(q.w, "%d,\"%s\"]", line.idx, line.s)
				}
			} // for _, line := range lines
			if !download {
				fmt.Fprintln(q.w, "]")
			}
		} // for run := 0; run < 2; run++

		if !download {
			fmt.Fprintf(q.w, `);
			   makemetatable(%d);
			   //--></script>
			   `, number)
		}
	} // for number, meta := range metas

	if !download {
		fmt.Fprintf(&buf,
			"<hr>tijd: %s\n<p>\n<a href=\"xstatsmeta?%s&amp;d=1\">download</a>\n",
			tijd(time.Now().Sub(now)),
			strings.Replace(q.r.URL.RawQuery, "&", "&amp;", -1))
		updateText(q, buf.String())
		buf.Reset()
	}

}
Ejemplo n.º 2
0
// TAB: xpath
func xpath(q *Context) {

	prefix := getprefix(q)
	if !q.prefixes[prefix] {
		http.Error(q.w, "Invalid corpus: "+prefix, http.StatusPreconditionFailed)
		return
	}

	xpathmax := getxpathmax(q)

	methode := first(q.r, "mt")
	if methode != "dx" {
		methode = "std"
	}

	var errval error
	var db *dbxml.Db
	var docs *dbxml.Docs
	var loading bool
	defer func() {
		if docs != nil {
			docs.Close()
		}
		if db != nil {
			db.Close()
		}
		if loading {
			clearLoading(q.w)
		}
		if errval != nil {
			fmt.Fprintf(q.w, "<div class=\"error\">FOUT: %s</div>\n", html.EscapeString(errval.Error()))
		}
		html_footer(q)
	}()

	// HTML-uitvoer van begin van de pagina
	writeHead(q, "", 2)
	html_xpath_header(q)

	// HTML-uitvoer van het formulier
	// Returnwaarde is true als er een query was gedefinieerd
	has_query := html_xpath_form(q, xpathmax)

	// Als er geen query is gedefinieerd, HTML-uitvoer van korte helptekst, pagina-einde, en exit
	if !has_query {
		html_xpath_uitleg(q)
		return
	}

	var chClose <-chan bool
	if f, ok := q.w.(http.CloseNotifier); ok {
		chClose = f.CloseNotify()
	} else {
		chClose = make(<-chan bool)
	}

	_, errval = q.db.Exec(fmt.Sprintf("UPDATE `%s_info` SET `active` = NOW() WHERE `id` = %q", Cfg.Prefix, prefix))
	if logerr(errval) {
		return
	}

	offset := 0
	o, err := strconv.Atoi(first(q.r, "offset"))
	if err == nil {
		offset = o
	}
	if offset < 0 {
		offset = 0
	}

	fmt.Fprintln(q.w, "<hr>")

	now := time.Now()

	var owner string
	var nlines uint64
	var rows *sql.Rows
	rows, errval = q.db.Query(fmt.Sprintf("SELECT `owner`,`nline` FROM `%s_info` WHERE `id` = %q", Cfg.Prefix, prefix))
	if logerr(errval) {
		return
	}
	for rows.Next() {
		errval = rows.Scan(&owner, &nlines)
		if logerr(errval) {
			rows.Close()
			return
		}
	}
	errval = rows.Err()
	if logerr(errval) {
		return
	}

	dactfiles := make([]string, 0)
	global := false
	if strings.Contains(owner, "@") {
		dactfiles = append(dactfiles, filepath.Join(paqudir, "data", prefix, "data.dact"))
	} else {
		global = true
		rows, errval = q.db.Query(fmt.Sprintf("SELECT `arch` FROM `%s_c_%s_arch` ORDER BY `id`", Cfg.Prefix, prefix))
		if logerr(errval) {
			return
		}
		for rows.Next() {
			var s string
			errval = rows.Scan(&s)
			if logerr(errval) {
				rows.Close()
				return
			}
			if strings.HasSuffix(s, ".dact") {
				dactfiles = append(dactfiles, s)
			}
		}
		errval = rows.Err()
		if logerr(errval) {
			return
		}
	}

	if len(dactfiles) == 0 {
		fmt.Fprintln(q.w, "Er zijn geen dact-bestanden voor dit corpus")
		return
	}

	fmt.Fprintf(q.w, "<ol start=\"%d\" id=\"ol\" class=\"xpath\">\n</ol>\n", offset+1)

	fmt.Fprintln(q.w, "<div id=\"loading\"><img src=\"busy.gif\" alt=\"[bezig]\"> <span></span></div>")
	if ff, ok := q.w.(http.Flusher); ok {
		ff.Flush()
	}
	loading = true

	found := false
	curno := 0
	filename := ""
	curdac := ""
	xmlall := ""
	xmlparts := make([]string, 0)
	query := first(q.r, "xpath")
	fullquery := query
	if strings.Contains(query, "%") {
		rules := getMacrosRules(q)
		fullquery = macroKY.ReplaceAllStringFunc(query, func(s string) string {
			return rules[s[1:len(s)-1]]
		})
	}

	queryparts := strings.Split(fullquery, "+|+")

	var seen uint64
	for i, dactfile := range dactfiles {
		select {
		case <-chClose:
			logerr(errConnectionClosed)
			return
		default:
		}

		if Cfg.Dactx && methode == "dx" {
			if i == 0 {
				if _, err := os.Stat(dactfile + "x"); err != nil {
					methode = "std"
					fmt.Fprintln(q.w, `<script type="text/javascript"><!--
$('#ol').before('<div class="warning">Geen ge&euml;xpandeerde indexnodes beschikbaar voor dit corpus.<br>De standaardmethode wordt gebruikt.</div>');
//--></script>`)
				}
			}
			if methode == "dx" {
				dactfile += "x"
			}
		}

		if curno > offset+xpathmax {
			break
		}

		if seen > 0 {
			fmt.Fprintf(q.w, `<script type="text/javascript"><!--
$('#loading span').html('%.1f%%');
//--></script>
`, float64(seen)*100/float64(nlines))
			if ff, ok := q.w.(http.Flusher); ok {
				ff.Flush()
			}
		}

		errval = bugtest(dactfile, queryparts[0])
		if errval != nil {
			return
		}

		db, errval = dbxml.Open(dactfile)
		if logerr(errval) {
			return
		}

		var qu *dbxml.Query
		qu, errval = db.Prepare(queryparts[0])
		if logerr(errval) {
			return
		}
		done := make(chan bool, 1)
		interrupted := make(chan bool, 1)
		go func() {
			select {
			case <-chClose:
				interrupted <- true
				logerr(errConnectionClosed)
				qu.Cancel()
			case <-done:
			}
		}()

		docs, errval = qu.Run()
		if logerr(errval) {
			done <- true
			return
		}
		filename = ""
	NEXTDOC:
		for docs.Next() {
			name := docs.Name()
			newdoc := false
			if name != filename {
				if found && curno > offset && curno <= offset+xpathmax {
					found = false
					xpath_result(q, curno, curdac, filename, xmlall, xmlparts, prefix, global)
					xmlparts = xmlparts[0:0]
				}
				if len(queryparts) == 1 {
					curno++
					if curno > offset+xpathmax {
						docs.Close()
						continue
					}
				}
				curdac = dactfile
				filename = name
				newdoc = true
			}
			if len(queryparts) == 1 {
				found = true
				if curno > offset+xpathmax {
					docs.Close()
				} else {
					if curno > offset && curno <= offset+xpathmax {
						xmlall = docs.Content()
						xmlparts = append(xmlparts, docs.Match())
					}
				}
			} else if newdoc {
				newdoc = false
				doctxt := fmt.Sprintf("[dbxml:metadata('dbxml:name')=%q]", name)
				var docs2 *dbxml.Docs
				for i := 1; i < len(queryparts)-1; i++ {
					docs2, errval = db.Query(doctxt + queryparts[i])
					if logerr(errval) {
						done <- true
						return
					}
					if !docs2.Next() {
						continue NEXTDOC
					}
					docs2.Close()
				}
				docs2, errval = db.Query(doctxt + queryparts[len(queryparts)-1])
				if logerr(errval) {
					done <- true
					return
				}
				found = false
				for docs2.Next() {
					if !found {
						found = true
						curno++
						if curno > offset+xpathmax {
							docs.Close()
						}
					}
					if curno > offset && curno <= offset+xpathmax {
						xmlall = docs2.Content()
						xmlparts = append(xmlparts, docs2.Match())
					} else {
						docs2.Close()
					}
				}
			}
		} // for docs.Next()
		errval = docs.Error()
		docs = nil
		if logerr(errval) {
			done <- true
			return
		}

		if len(dactfiles) > 1 {
			if n, err := db.Size(); err == nil {
				seen += n
			}
		}
		db.Close()
		db = nil
		done <- true
		select {
		case <-interrupted:
			return
		default:
		}

		if found && curno > offset && curno <= offset+xpathmax {
			found = false
			xpath_result(q, curno, curdac, filename, xmlall, xmlparts, prefix, global)
			xmlparts = xmlparts[0:0]
		}
		if curno > offset+xpathmax {
			break
		}
	} // for _, dactfile := range dactfiles

	clearLoading(q.w)
	loading = false

	if curno == 0 {
		fmt.Fprintf(q.w, "geen match gevonden")
	}

	// Links naar volgende en vorige pagina's met resultaten
	qs := "xpath=" + urlencode(query) + "&amp;mt=" + methode
	if offset > 0 || curno > offset+xpathmax {
		if offset > 0 {
			fmt.Fprintf(q.w, "<a href=\"xpath?%s&amp;offset=%d\">vorige</a>", qs, offset-xpathmax)
		} else {
			fmt.Fprint(q.w, "vorige")
		}
		fmt.Fprint(q.w, " | ")
		if curno > offset+xpathmax {
			fmt.Fprintf(q.w, "<a href=\"xpath?%s&amp;offset=%d\">volgende</a>", qs, offset+xpathmax)
		} else {
			fmt.Fprint(q.w, "volgende")
		}
	}

	if q.auth && curno > 0 {
		fmt.Fprintf(q.w, `<p>
<form action="xsavez" method="POST" accept-charset="UTF-8" enctype="multipart/form-data">
<input type="hidden" name="xpath" value="%s">
<input type="hidden" name="db" value="%s">
<input type="hidden" name="mt" value="%s">
<input type="submit" value="nieuw corpus maken op basis van deze zoekopdracht">
</form>
`,
			html.EscapeString(first(q.r, "xpath")),
			html.EscapeString(prefix),
			methode)
	}

	fmt.Fprintln(q.w, "<hr><small>tijd:", tijd(time.Now().Sub(now)), "</small>")

	if curno == 0 {
		return
	}

	fmt.Fprintln(q.w, "<hr>")

	var metas []MetaType
	if q.hasmeta[prefix] {
		metas = getMeta(q, prefix)
	}

	// Links naar statistieken
	fmt.Fprintf(q.w, `
        <p>
		<div id="xstats">
		<form action="javascript:$.fn.xpathstats()" name="xstatsform">
		<input type="hidden" name="xpath" value="%s">
		<input type="hidden" name="db" value="%s">
		<input type="hidden" name="mt" value="%s">
		Selecteer &eacute;&eacute;n tot vijf attributen:
        <p>
`, html.EscapeString(query), html.EscapeString(prefix), methode)

	for i := 1; i <= 5; i++ {

		fmt.Fprintf(q.w, "<select name=\"attr%d\">\n<option value=\"\">--</option>\n", i)
		if q.hasmeta[prefix] {
			fmt.Fprintln(q.w, "<optgroup label=\"&mdash; metadata &mdash;\">")
			for _, m := range metas {
				fmt.Fprintf(q.w, "<option value=\":%s\">%s</option>\n", html.EscapeString(m.name), html.EscapeString(m.name))
			}
			fmt.Fprintln(q.w, "</optgroup>")
			fmt.Fprintln(q.w, "<optgroup label=\"&mdash; attributen &mdash;\">")
		}
		for _, s := range NodeTags {
			fmt.Fprintf(q.w, "<option>%s</option>\n", s)
		}
		if q.hasmeta[prefix] {
			fmt.Fprintln(q.w, "</optgroup>")
		}
		fmt.Fprintln(q.w, "</select>")
	}

	fmt.Fprint(q.w, `
		<p>
		<input type="submit" value="doe telling">
		</form>
		<p>
        <iframe src="leeg.html" id="xframe" class="hide"></iframe>
        <div id="result" class="hide"></div>
`)
	if q.hasmeta[prefix] {
		metahelp(q)
		fmt.Fprintln(q.w, `<p>
            <div id="statsmeta" class="hide">
            <div id="innermetatop"></div>
            <div id="metacount" class="hide">
            <table>
            <tr><td>items:<td class="right" id="metacount1">
            <tr><td>zinnen:<td class="right" id="metacount2">
            </table>
            </div>
            <div id="innermeta"></div>
            <img src="busy.gif" id="busymeta" class="hide" alt="aan het werk..." style="margin-top:1em">
            </div>`)
	}
	fmt.Fprintln(q.w, "</div>")

}