Complete redesign of lang.go

Some code is now reusable

- openCSV()
- toKor()
- toEng()

the new translation syantax is

```golang
korvax := Translate{"Contraband"}
fmt.Println(korvax.Eng2Kor())
// or
fmt.Println(Translate{"KIHTYOMOLES"}.Kor2Eng())
```

output:

`Zelidovoso`

lang.go

@@ -8,8 +8,15 @@ import (
 	"strings"
 )
 
-// translate - set up structure of a word iteration
-type translate struct {
+/*
+Translate words
+*/
+type Translate struct {
+	word string
+}
+
+// trans - set up structure of a word iteration
+type trans0 struct {
 	english string // english word
 	word    string // no caps word
 	capword string // Capitalized word
@@ -17,9 +24,77 @@ type translate struct {
 }
 
 /*
-Korvax2Eng - Translate a Korvax word to English
+Kor2Eng translate korvax word to english word
 */
-func Korvax2Eng(kvwrd string) string {
+func (t Translate) Kor2Eng() (returnstring string) {
+	csvlines := openCSV("korvax-lang.csv")
+	for range csvlines {
+		returnstring = (toEng(t, csvlines))
+	}
+	return
+}
+
+/*
+Eng2Kor translate english word to korvax word
+*/
+func (t Translate) Eng2Kor() (returnstring string) {
+	csvlines := openCSV("korvax-lang.csv")
+	for range csvlines {
+		returnstring = (toKor(t, csvlines))
+	}
+	return
+}
+
+func toEng(t Translate, csvlines [][]string) string {
+	returnstring := "*\\Kzzzzzzt\\*" // word not found default
+	for _, line := range csvlines {
+		lang := trans0{
+			english: strings.ToLower(line[0]),
+			word:    strings.ToLower(line[1]),
+			capword: strings.ToLower(line[2]),
+			acpword: strings.ToLower(line[3]),
+		}
+		// check translate struct for value
+		if strings.ToLower(t.word) == lang.word {
+			returnstring = lang.english
+		} else if strings.ToLower(t.word) == lang.capword {
+			returnstring = strings.Title(strings.ToLower(lang.english))
+		} else if strings.ToLower(t.word) == lang.acpword {
+			returnstring = strings.ToUpper(lang.english)
+		}
+	}
+	return returnstring
+}
+
+func toKor(t Translate, csvlines [][]string) string {
+	returnstring := "*\\Kzzzzzzt\\*" // word not found default
+	for _, line := range csvlines {
+		lang := trans0{
+			english: line[0],
+			word:    line[1],
+			capword: line[2],
+			acpword: line[3],
+		}
+		if t.word == lang.english {
+			if lang.word != "" {
+				returnstring = lang.word
+			}
+		}
+		if t.word == strings.Title(strings.ToLower(lang.english)) {
+			if lang.capword != "" {
+				returnstring = strings.Title(strings.ToLower(lang.capword))
+			}
+		}
+		if t.word == strings.ToUpper(lang.english) {
+			if lang.acpword != "" {
+				returnstring = strings.ToUpper(lang.acpword)
+			}
+		}
+	}
+	return returnstring
+}
+
+func openCSV(lagcsv string) [][]string {
 	// create temp dir
 	tempdir, err := ioutil.TempDir("", "nmslib-")
 	if err != nil {
@@ -28,88 +103,23 @@ func Korvax2Eng(kvwrd string) string {
 	defer os.RemoveAll(tempdir) // Clean up temp files
 
 	// extract language file from resources.go
-	data, err := Asset("korvax-lang.csv")
+	data, err := Asset(lagcsv)
 	if err != nil {
 		panic(err)
 	}
+
 	// wirte extracted data to temp dir
-	err = ioutil.WriteFile(tempdir+"/korvax-lang.csv", []byte(data), 0644)
-	csvFile, err := os.Open(tempdir + "/korvax-lang.csv")
+	err = ioutil.WriteFile(tempdir+"/"+lagcsv, []byte(data), 0644)
+	csvFile, err := os.Open(tempdir + "/" + lagcsv)
 	if err != nil {
 		fmt.Println(err)
 	}
 	defer csvFile.Close() // close language file when finished
+
+	// read csv file from memory
 	csvlines, err := csv.NewReader(csvFile).ReadAll()
 	if err != nil {
 		fmt.Println(err)
 	}
-	// loop through language data and assign to translate strut
-	for _, line := range csvlines {
-		lang := translate{
-			english: strings.ToLower(line[0]),
-			word:    strings.ToLower(line[1]),
-			capword: strings.ToLower(line[2]),
-			acpword: strings.ToLower(line[3]),
-		}
-		// check translate struct for value
-		if strings.ToLower(kvwrd) == lang.word {
-			return lang.english
-		} else if strings.ToLower(kvwrd) == lang.capword {
-			return strings.Title(strings.ToLower(lang.english))
-		} else if strings.ToLower(kvwrd) == lang.acpword {
-			return strings.ToUpper(lang.english)
-		}
-	}
-	return "*\\Kzzzzzzt\\*" // word not found default
-}
-
-/*
-Eng2Korvax - Convert (some) english words to Korvax
-*/
-func Eng2Korvax(enwrd string) string {
-	// setup temp dir
-	tempdir, err := ioutil.TempDir("", "nmslib")
-	if err != nil {
-		panic(err)
-	}
-	defer os.RemoveAll(tempdir) // clean up temp files
-
-	data, err := Asset("korvax-lang.csv")
-	if err != nil {
-		panic(err)
-	}
-	err = ioutil.WriteFile(tempdir+"/korvax-lang.csv", []byte(data), 0644)
-	csvFile, err := os.Open(tempdir + "/korvax-lang.csv")
-	if err != nil {
-		fmt.Println(err)
-	}
-	csvlines, err := csv.NewReader(csvFile).ReadAll()
-	if err != nil {
-		fmt.Println(err)
-	}
-	for _, line := range csvlines {
-		lang := translate{
-			english: line[0],
-			word:    line[1],
-			capword: line[2],
-			acpword: line[3],
-		}
-		if enwrd == lang.english {
-			if lang.word != "" {
-				return lang.word
-			}
-		}
-		if enwrd == strings.Title(strings.ToLower(lang.english)) {
-			if lang.capword != "" {
-				return strings.Title(strings.ToLower(lang.capword))
-			}
-		}
-		if enwrd == strings.ToUpper(lang.english) {
-			if lang.acpword != "" {
-				return strings.ToUpper(lang.acpword)
-			}
-		}
-	}
-	csvFile.Close()
-	return "*\\Kzzzzzzt\\*" // word not found default
+	return csvlines
 }