feat: fix and add SnakeCase/UpperSnakeCase

strutil/string_internal.go

@@ -1,47 +1,9 @@
 package strutil
 
 import (
-	"strings"
 	"unicode"
 )
 
-// splitWordsToLower split a string into worlds by uppercase char
-func splitWordsToLower(s string) []string {
-	var result []string
-
-	upperIndexes := upperIndex(s)
-	l := len(upperIndexes)
-	if upperIndexes == nil || l == 0 {
-		if s != "" {
-			result = append(result, s)
-		}
-		return result
-	}
-	for i := 0; i < l; i++ {
-		if i < l-1 {
-			result = append(result, strings.ToLower(s[upperIndexes[i]:upperIndexes[i+1]]))
-		} else {
-			result = append(result, strings.ToLower(s[upperIndexes[i]:]))
-		}
-	}
-	return result
-}
-
-// upperIndex get a int slice which elements are all the uppercase char index of a string
-func upperIndex(s string) []int {
-	var result []int
-	for i := 0; i < len(s); i++ {
-		if 64 < s[i] && s[i] < 91 {
-			result = append(result, i)
-		}
-	}
-	if len(s) > 0 && result != nil && result[0] != 0 {
-		result = append([]int{0}, result...)
-	}
-
-	return result
-}
-
 func splitIntoStrings(s string, upperCase bool) []string {
 	var runes [][]rune
 	lastCharType := 0
@@ -83,7 +45,6 @@ func splitIntoStrings(s string, upperCase bool) []string {
 				result = append(result, string(toUpperAll(rs)))
 			} else {
 				result = append(result, string(toLowerAll(rs)))
-
 			}
 		}
 	}