diff --git a/str_util.cpp b/str_util.cpp
index dc10528..f3f5dc5 100644
--- a/str_util.cpp
+++ b/str_util.cpp
@@ -101,6 +101,14 @@ bool str_util::str_endswith(std::string input, std::string pattern) {
     return i == ilen - plen; 
 }
 
+bool str_util::str_startswith(std::string input, std::string pattern) {
+    auto ilen = input.length();
+    auto plen = pattern.length();
+    if (ilen < plen) return false;
+    auto i = input.find(pattern);
+    return i == 0;
+}
+
 std::string str_util::remove_quote(std::string input) {
     if (input.length() < 2) return input;
     if (input[0] == '"' && input[input.length() - 1] == '"') {
diff --git a/str_util.h b/str_util.h
index ba67887..89e2bb5 100644
--- a/str_util.h
+++ b/str_util.h
@@ -60,6 +60,13 @@ namespace str_util {
      * @return true if input ends with pattern
     */
     bool str_endswith(std::string input, std::string pattern);
+    /**
+     * @brief Check if a string starts with a pattern
+     * @param input Input data
+     * @param pattern Pattern
+     * @return true if input starts with pattern
+    */
+    bool str_startswith(std::string input, std::string pattern);
     /**
      * @brief Trim a string
      * @param input Input string