feat: added sling url decomposition

kernel/libc/string.c

@@ -56,6 +56,19 @@ const char *strchr(const char *s, char c) {
     }
 }
 
+const char *strrchr(const char *s, char c) {
+    int index = strlen(s);
+    while (1) {
+        if (s[index] == c) {
+            return &s[index];
+        }
+        if (index == 0) {
+            return NULL;
+        }
+        index--;
+    }
+}
+
 int memcmp(const void *s1, const void *s2, size_t n) {
     uint8_t a, b;
     for (size_t i = 0; i < n; ++i) {