Add result truncation

dict/main.go

@@ -69,10 +69,11 @@ func ParseEntry(entry jmdict.JmdictEntry) Entry {
 	}
 }
 
-func Search(query string) (exactResults []Entry, otherResults []Entry) {
+func Search(query string) (exactResults []Entry, otherResults []Entry, truncated bool) {
 	query = strings.TrimSpace(query)
 	exactResults = make([]Entry, 0)
 	otherResults = make([]Entry, 0)
+	count := 0
 	for _, jmdictEntry := range dict.Entries {
 		exactMatch := false
 		for _, kanji := range jmdictEntry.Kanji {
@@ -98,6 +99,11 @@ func Search(query string) (exactResults []Entry, otherResults []Entry) {
 		} else {
 			otherResults = append(otherResults, entry)
 		}
+		count++
+		if count >= 500 {
+			truncated = true
+			break
+		}
 	}
 	return
 }
@@ -105,13 +111,15 @@ func Search(query string) (exactResults []Entry, otherResults []Entry) {
 type searchTemplateData struct {
 	ExactResults []Entry
 	OtherResults []Entry
+	Truncated    bool
 	Count        int
 }
 
-func initSearchTemplateData(exactResults []Entry, otherResults []Entry) searchTemplateData {
+func initSearchTemplateData(exactResults []Entry, otherResults []Entry, truncated bool) searchTemplateData {
 	return searchTemplateData{
 		ExactResults: exactResults,
 		OtherResults: otherResults,
+		Truncated:    truncated,
 		Count:        len(exactResults) + len(otherResults),
 	}
 }
@@ -156,7 +164,7 @@ func main() {
 			w.Header().Set("Content-Type", "application/json; charset=utf-8")
 			r.ParseMultipartForm(0)
 			query := r.FormValue("q")
-			exactResults, otherResults := Search(query)
+			exactResults, otherResults, _ := Search(query)
 			jsonBytes, _ := json.Marshal(append(exactResults, otherResults...))
 			fmt.Fprint(w, string(jsonBytes))
 			return false

dict/templates/search.html

@@ -1,5 +1,5 @@
 {{- define "search" -}}
-<p><i>{{ if eq .Count 0 }}No results{{ else }}{{ .Count }} result{{ if ne .Count 1}}s{{ end }}{{ end }}.</i></p>
+<p><i>{{ if .Truncated }}Truncated results, showing first {{ .Count }}{{ else }}{{ if eq .Count 0 }}No results{{ else }}{{ .Count }} result{{ if ne .Count 1}}s{{ end }}{{ end }}{{ end }}.</i></p>
 {{- range .ExactResults -}}
 {{- template "word" . -}}
 {{- end }}