Esempio n. 1
0
// Handles requests to /index by compiling the q= parameter into a regular
// expression (codesearch/regexp), searching the index for it and returning the
// list of matching filenames in a JSON array.
// TODO: This doesn’t handle file name regular expressions at all yet.
// TODO: errors aren’t properly signaled to the requester
func Index(w http.ResponseWriter, r *http.Request) {
	if *cpuProfile != "" {
		f, err := os.Create(*cpuProfile)
		if err != nil {
			log.Fatal(err)
		}
		defer f.Close()
		pprof.StartCPUProfile(f)
		defer pprof.StopCPUProfile()
	}

	r.ParseForm()
	textQuery := r.Form.Get("q")
	re, err := regexp.Compile(textQuery)
	if err != nil {
		log.Printf("regexp.Compile: %s\n", err)
		return
	}
	query := index.RegexpQuery(re.Syntax)
	log.Printf("[%s] query: text = %s, regexp = %s\n", id, textQuery, query)
	files := doPostingQuery(query)
	t2 := time.Now()
	if err := json.NewEncoder(w).Encode(files); err != nil {
		log.Printf("%s\n", err)
		return
	}
	t3 := time.Now()
	fmt.Printf("[%s] written in %v\n", id, t3.Sub(t2))
}
Esempio n. 2
0
// Handles requests to /index by compiling the q= parameter into a regular
// expression (codesearch/regexp), searching the index for it and returning the
// list of matching filenames in a JSON array.
// TODO: This doesn’t handle file name regular expressions at all yet.
// TODO: errors aren’t properly signaled to the requester
func Index(w http.ResponseWriter, r *http.Request) {
	if *cpuProfile != "" {
		f, err := os.Create(*cpuProfile)
		if err != nil {
			log.Fatal(err)
		}
		defer f.Close()
		pprof.StartCPUProfile(f)
		defer pprof.StopCPUProfile()
	}

	r.ParseForm()
	textQuery := r.Form.Get("q")
	re, err := regexp.Compile(textQuery)
	if err != nil {
		log.Printf("regexp.Compile: %s\n", err)
		return
	}
	query := index.RegexpQuery(re.Syntax)
	log.Printf("[%s] query: text = %s, regexp = %s\n", id, textQuery, query)
	t0 := time.Now()
	post := ix.PostingQuery(query)
	t1 := time.Now()
	fmt.Printf("[%s] postingquery done in %v, %d results\n", id, t1.Sub(t0), len(post))
	files := make([]string, len(post))
	for idx, fileid := range post {
		files[idx] = ix.Name(fileid)
	}
	t2 := time.Now()
	fmt.Printf("[%s] filenames collected in %v\n", id, t2.Sub(t1))
	jsonFiles, err := json.Marshal(files)
	if err != nil {
		log.Printf("%s\n", err)
		return
	}
	t3 := time.Now()
	fmt.Printf("[%s] marshaling done in %v\n", id, t3.Sub(t2))
	_, err = w.Write(jsonFiles)
	if err != nil {
		log.Printf("%s\n", err)
		return
	}
	t4 := time.Now()
	fmt.Printf("[%s] written in %v\n", id, t4.Sub(t3))
}
Esempio n. 3
0
func validateQuery(query string) error {
	// Parse the query and see whether the resulting trigram query is
	// non-empty. This is to catch queries like “package:debian”.
	fakeUrl, err := url.Parse(query)
	if err != nil {
		return err
	}
	rewritten := search.RewriteQuery(*fakeUrl)
	log.Printf("rewritten query = %q\n", rewritten.String())
	re, err := dcsregexp.Compile(rewritten.Query().Get("q"))
	if err != nil {
		return err
	}
	indexQuery := index.RegexpQuery(re.Syntax)
	log.Printf("trigram = %v, sub = %v", indexQuery.Trigram, indexQuery.Sub)
	if len(indexQuery.Trigram) == 0 && len(indexQuery.Sub) == 0 {
		return fmt.Errorf("Empty index query")
	}
	return nil
}
Esempio n. 4
0
// Handles requests to /index by compiling the q= parameter into a regular
// expression (codesearch/regexp), searching the index for it and returning the
// list of matching filenames in a JSON array.
// TODO: This doesn’t handle file name regular expressions at all yet.
// TODO: errors aren’t properly signaled to the requester
func (s *server) Files(ctx context.Context, in *proto.FilesRequest) (*proto.FilesReply, error) {
	if *cpuProfile != "" {
		f, err := os.Create(*cpuProfile)
		if err != nil {
			log.Fatal(err)
		}
		defer f.Close()
		pprof.StartCPUProfile(f)
		defer pprof.StopCPUProfile()
	}

	re, err := regexp.Compile(in.Query)
	if err != nil {
		return nil, fmt.Errorf("regexp.Compile: %s\n", err)
	}
	query := index.RegexpQuery(re.Syntax)
	log.Printf("[%s] query: text = %s, regexp = %s\n", s.id, in.Query, query)
	return &proto.FilesReply{
		Path: s.doPostingQuery(query),
	}, nil
}