diff --git a/src/generator/config/ruleconvert.cpp b/src/generator/config/ruleconvert.cpp
index 70f6c85ba..37935c4ea 100644
--- a/src/generator/config/ruleconvert.cpp
+++ b/src/generator/config/ruleconvert.cpp
@@ -486,17 +486,21 @@ static rapidjson::Value transformRuleToSingBox(const std::string& rule, const st
 static void appendSingBoxRule(rapidjson::Value &rules, const std::string& rule, rapidjson::MemoryPoolAllocator<>& allocator)
 {
     using namespace rapidjson_ext;
-    auto args = split(rule, ",");
+    auto args = split(rule, ',');
     if (args.size() < 2) return;
-    auto type = toLower(std::string(args[0]));
-    auto value = toLower(args[1]);
+    auto type = args[0];
 //    std::string_view option;
 //    if (args.size() >= 3) option = args[2];
 
-    type = replaceAllDistinct(type, "-", "_");
-    type = replaceAllDistinct(type, "ip_cidr6", "ip_cidr");
+    if (none_of(SingBoxRuleTypes, [&](const std::string& t){ return type == t; }))
+        return;
+
+    auto realType = toLower(std::string(type));
+    auto value = toLower(std::string(args[1]));
+    realType = replaceAllDistinct(realType, "-", "_");
+    realType = replaceAllDistinct(realType, "ip_cidr6", "ip_cidr");
 
-    rules | AppendToArray(type.c_str(), rapidjson::Value(value.c_str(), allocator), allocator);
+    rules | AppendToArray(realType.c_str(), rapidjson::Value(value.c_str(), value.size(), allocator), allocator);
 }
 
 void rulesetToSingBox(rapidjson::Document &base_rule, std::vector<RulesetContent> &ruleset_content_array, bool overwrite_original_rules)
@@ -565,8 +569,6 @@ void rulesetToSingBox(rapidjson::Document &base_rule, std::vector<RulesetContent
             lineSize = strLine.size();
             if(!lineSize || strLine[0] == ';' || strLine[0] == '#' || (lineSize >= 2 && strLine[0] == '/' && strLine[1] == '/')) //empty lines and comments are ignored
                 continue;
-            if(std::none_of(SingBoxRuleTypes.begin(), SingBoxRuleTypes.end(), [strLine](const std::string& type){return startsWith(strLine, type);}))
-                continue;
             if(strFind(strLine, "//"))
             {
                 strLine.erase(strLine.find("//"));
diff --git a/src/utils/rapidjson_extra.h b/src/utils/rapidjson_extra.h
index 1b9d6be29..c5fd5c2fe 100644
--- a/src/utils/rapidjson_extra.h
+++ b/src/utils/rapidjson_extra.h
@@ -117,14 +117,23 @@ namespace rapidjson_ext {
     struct AppendToArray : public ExtensionFunction<rapidjson::Value &>
     {
         rapidjson::Value &value;
-        const rapidjson::Value::Ch *name;
+        rapidjson::GenericValue<rapidjson::UTF8<>> name;
         rapidjson::MemoryPoolAllocator<> &allocator;
 
         AppendToArray(const rapidjson::Value::Ch *name, rapidjson::Value &value,
-                      rapidjson::MemoryPoolAllocator<> &allocator): value(value), name(name), allocator(allocator) {}
+                      rapidjson::MemoryPoolAllocator<> &allocator): value(value), name(rapidjson::Value(name, allocator)), allocator(allocator) {}
 
         AppendToArray(const rapidjson::Value::Ch *name, rapidjson::Value &&value,
-                      rapidjson::MemoryPoolAllocator<> &allocator): value(value), name(name), allocator(allocator) {}
+                      rapidjson::MemoryPoolAllocator<> &allocator): value(value), name(rapidjson::Value(name, allocator)), allocator(allocator) {}
+
+        AppendToArray(const rapidjson::Value::Ch *name, std::size_t length, rapidjson::Value &value,
+                      rapidjson::MemoryPoolAllocator<> &allocator): value(value), name(rapidjson::Value(name, length, allocator)), allocator(allocator) {}
+
+        AppendToArray(const rapidjson::Value::Ch *name, std::size_t length, rapidjson::Value &&value,
+                      rapidjson::MemoryPoolAllocator<> &allocator): value(value), name(rapidjson::Value(name, length, allocator)), allocator(allocator) {}
+
+        AppendToArray(rapidjson::Value &&name, rapidjson::Value &value,
+                      rapidjson::MemoryPoolAllocator<> &allocator): value(value), allocator(allocator) { this->name.Swap(name); }
 
         inline rapidjson::Value &operator()(rapidjson::Value &root) const override
         {
diff --git a/src/utils/stl_extra.h b/src/utils/stl_extra.h
index 46c3723a3..6e14390cd 100644
--- a/src/utils/stl_extra.h
+++ b/src/utils/stl_extra.h
@@ -14,4 +14,25 @@ template <typename T> inline void eraseElements(T &target)
     T().swap(target);
 }
 
+template <typename Container, typename Element>
+concept ConstIterable = requires(Container a, Element b) {
+    { a.cbegin() } -> std::same_as<typename Container::const_iterator>;
+    { a.cend() } -> std::same_as<typename Container::const_iterator>;
+    typename Container::const_reference;
+};
+
+template <typename Container, typename Element>
+concept Iterable = requires(Container a, Element b) {
+    { a.begin() } -> std::same_as<typename Container::iterator>;
+    { a.end() } -> std::same_as<typename Container::iterator>;
+    typename Container::reference;
+};
+
+template <typename ConstIterableContainer>
+requires ConstIterable<ConstIterableContainer, typename ConstIterableContainer::value_type>
+inline bool none_of(ConstIterableContainer &container, std::function<bool(typename ConstIterableContainer::const_reference)> func)
+{
+    return std::none_of(container.cbegin(), container.cend(), func);
+}
+
 #endif // STL_EXTRA_H_INCLUDED
diff --git a/src/utils/string.cpp b/src/utils/string.cpp
index 667279c90..86b1ca881 100644
--- a/src/utils/string.cpp
+++ b/src/utils/string.cpp
@@ -9,7 +9,7 @@
 #include "string.h"
 #include "map_extra.h"
 
-std::vector<std::string> split(const std::string &s, const std::string &seperator)
+std::vector<std::string> split(const std::string &s, const std::string &separator)
 {
     std::vector<std::string> result;
     string_size i = 0;
@@ -20,7 +20,7 @@ std::vector<std::string> split(const std::string &s, const std::string &seperato
         while(i != s.size() && flag == 0)
         {
             flag = 1;
-            for(char x : seperator)
+            for(char x : separator)
                 if(s[i] == x)
                 {
                     ++i;
@@ -33,7 +33,7 @@ std::vector<std::string> split(const std::string &s, const std::string &seperato
         string_size j = i;
         while(j != s.size() && flag == 0)
         {
-            for(char x : seperator)
+            for(char x : separator)
                 if(s[j] == x)
                 {
                     flag = 1;
@@ -51,6 +51,45 @@ std::vector<std::string> split(const std::string &s, const std::string &seperato
     return result;
 }
 
+std::vector<std::string_view> split(std::string_view s, char separator)
+{
+    std::vector<std::string_view> result;
+    string_size i = 0;
+
+    while (i != s.size())
+    {
+        int flag = 0;
+        while(i != s.size() && flag == 0)
+        {
+            flag = 1;
+            if(s[i] == separator)
+            {
+                ++i;
+                flag = 0;
+                break;
+            }
+        }
+
+        flag = 0;
+        string_size j = i;
+        while(j != s.size() && flag == 0)
+        {
+            if(s[j] == separator)
+            {
+                flag = 1;
+                break;
+            }
+            ++j;
+        }
+        if (i != j)
+        {
+            result.push_back(s.substr(i, j-i));
+            i = j;
+        }
+    }
+    return result;
+}
+
 std::string UTF8ToCodePoint(const std::string &data)
 {
     std::stringstream ss;
diff --git a/src/utils/string.h b/src/utils/string.h
index b376dcc12..9d1571fa2 100644
--- a/src/utils/string.h
+++ b/src/utils/string.h
@@ -14,7 +14,8 @@ using string_map = std::map<std::string, std::string>;
 using string_multimap = std::multimap<std::string, std::string>;
 using string_pair_array = std::vector<std::pair<std::string, std::string>>;
 
-std::vector<std::string> split(const std::string &s, const std::string &seperator);
+std::vector<std::string> split(const std::string &s, const std::string &separator);
+std::vector<std::string_view> split(std::string_view s, char separator);
 std::string join(const string_array &arr, const std::string &delimiter);
 
 template <typename InputIt>