Use git submodule

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "readability"]
+	path = readability
+	url = https://github.com/RadhiFadlillah/go-readability

readability

@@ -0,0 +1 @@
+Subproject commit 7283f7b58bc8f5fbc02b05e45faf37267e30dd42

readability/utils.go

@@ -1,73 +0,0 @@
-package readability
-
-import (
-	"crypto/md5"
-	"fmt"
-	"os"
-	"strings"
-	"unicode/utf8"
-
-	"github.com/PuerkitoBio/goquery"
-)
-
-func createDocFromFile(path string) (*goquery.Document, error) {
-	// Open file
-	src, err := os.Open(path)
-	if err != nil {
-		return nil, err
-	}
-	defer src.Close()
-
-	// Create document
-	return goquery.NewDocumentFromReader(src)
-}
-
-func hashNode(node *goquery.Selection) string {
-	if node == nil {
-		return ""
-	}
-
-	html, _ := node.Html()
-	return fmt.Sprintf("%x", md5.Sum([]byte(html)))
-}
-
-func strLen(str string) int {
-	return utf8.RuneCountInString(str)
-}
-
-func findSeparator(str string, separators ...string) (int, string) {
-	words := strings.Fields(str)
-	for i, word := range words {
-		for _, separator := range separators {
-			if word == separator {
-				return i, separator
-			}
-		}
-	}
-
-	return -1, ""
-}
-
-func hasSeparator(str string, separators ...string) bool {
-	idx, _ := findSeparator(str, separators...)
-	return idx != -1
-}
-
-func removeSeparator(str string, separators ...string) string {
-	words := strings.Fields(str)
-	finalWords := []string{}
-
-	for _, word := range words {
-		for _, separator := range separators {
-			if word != separator {
-				finalWords = append(finalWords, word)
-			}
-		}
-	}
-
-	return strings.Join(finalWords, " ")
-}
-
-func normalizeText(str string) string {
-	return strings.Join(strings.Fields(str), " ")
-}