diff --git a/main.go b/main.go
new file mode 100644
index 00000000..28534eaf
--- /dev/null
+++ b/main.go
@@ -0,0 +1,180 @@
+package main
+
+import (
+	"bufio"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/gogo/protobuf/proto"
+	"v2ray.com/core/app/router"
+)
+
+type Entry struct {
+	Type  string
+	Value string
+}
+
+type List struct {
+	Name  string
+	Entry []Entry
+}
+
+type ParsedList struct {
+	Name      string
+	Inclusion map[string]bool
+	Entry     []Entry
+}
+
+func (l *ParsedList) toProto() (*router.GeoSite, error) {
+	site := &router.GeoSite{
+		CountryCode: l.Name,
+	}
+	for _, entry := range l.Entry {
+		switch entry.Type {
+		case "domain":
+			site.Domain = append(site.Domain, &router.Domain{
+				Type:  router.Domain_Domain,
+				Value: entry.Value,
+			})
+		case "regex":
+			site.Domain = append(site.Domain, &router.Domain{
+				Type:  router.Domain_Regex,
+				Value: entry.Value,
+			})
+		case "keyword":
+			site.Domain = append(site.Domain, &router.Domain{
+				Type:  router.Domain_Plain,
+				Value: entry.Value,
+			})
+		default:
+			return nil, errors.New("unknown domain type: " + entry.Type)
+		}
+	}
+	return site, nil
+}
+
+func removeComment(line string) string {
+	idx := strings.Index(line, "#")
+	if idx == -1 {
+		return line
+	}
+	return strings.TrimSpace(line[:idx])
+}
+
+func parseEntry(line string) (Entry, error) {
+	kv := strings.Split(line, ":")
+	if len(kv) == 1 {
+		return Entry{
+			Type:  "domain",
+			Value: kv[0],
+		}, nil
+	}
+	if len(kv) == 2 {
+		return Entry{
+			Type:  strings.ToLower(kv[0]),
+			Value: strings.ToLower(kv[1]),
+		}, nil
+	}
+	return Entry{}, errors.New("Invalid format: " + line)
+}
+
+func Load(path string) (*List, error) {
+	file, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+
+	list := &List{
+		Name: strings.ToUpper(filepath.Base(path)),
+	}
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		line := strings.TrimSpace(scanner.Text())
+		line = removeComment(line)
+		if len(line) == 0 {
+			continue
+		}
+		entry, err := parseEntry(line)
+		if err != nil {
+			return nil, err
+		}
+		list.Entry = append(list.Entry, entry)
+	}
+
+	return list, nil
+}
+
+func ParseList(list *List, ref map[string]*List) (*ParsedList, error) {
+	pl := &ParsedList{
+		Name:      list.Name,
+		Inclusion: make(map[string]bool),
+	}
+	for _, entry := range list.Entry {
+		if entry.Type == "include" {
+			if pl.Inclusion[entry.Value] {
+				continue
+			}
+			pl.Inclusion[entry.Value] = true
+			r := ref[entry.Value]
+			if r == nil {
+				return nil, errors.New(entry.Value + " not found.")
+			}
+			pl.Entry = append(pl.Entry, r.Entry...)
+		} else {
+			pl.Entry = append(pl.Entry, entry)
+		}
+	}
+
+	return pl, nil
+}
+
+func main() {
+	dir := filepath.Join(os.Getenv("GOPATH"), "src", "github.com", "v2ray", "domain-list-community", "data")
+	ref := make(map[string]*List)
+	err := filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if info.IsDir() {
+			return nil
+		}
+		list, err := Load(path)
+		if err != nil {
+			return err
+		}
+		ref[list.Name] = list
+		return nil
+	})
+	if err != nil {
+		fmt.Println("Failed: ", err)
+		return
+	}
+	protoList := new(router.GeoSiteList)
+	for _, list := range ref {
+		pl, err := ParseList(list, ref)
+		if err != nil {
+			fmt.Println("Failed: ", err)
+			return
+		}
+		site, err := pl.toProto()
+		if err != nil {
+			fmt.Println("Failed: ", err)
+			return
+		}
+		protoList.Entry = append(protoList.Entry, site)
+	}
+
+	protoBytes, err := proto.Marshal(protoList)
+	if err != nil {
+		fmt.Println("Failed:", err)
+		return
+	}
+	if err := ioutil.WriteFile("dlc.dat", protoBytes, 0777); err != nil {
+		fmt.Println("Failed: ", err)
+	}
+}