[utils] string_equals with NULL check

src/string_utils.c

@@ -71,6 +71,11 @@ inline bool string_ends_with(const char *str, const char *ending) {
     return str_len < end_len ? false : !strcmp(str + str_len - end_len, ending);
 }
 
+inline bool string_equals(const char *s1, const char *s2) {
+    if (s1 == NULL || s2  == NULL) return false;
+    return strcmp(s1, s2) == 0;
+}
+
 inline void string_upper(char *s) {
     for (; *s; ++s) *s = toupper(*s);
 }

src/string_utils.h

@@ -60,6 +60,8 @@ void string_replace(char *s, char c1, char c2);
 bool string_starts_with(const char *str, const char *start);
 bool string_ends_with(const char *str, const char *ending);
 
+bool string_equals(const char *s1, const char *s2);
+
 uint32_t string_translate(char *str, size_t len, char *word_chars, char *word_repls, size_t trans_len);
 
 // UTF-8 string methods