Add string compare function

MaJerle · May 26, 2021 · 7fa6d16 · 7fa6d16
1 parent 10c0195
commit 7fa6d16
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## Develop
 
+- Add string compare function
+
 ## 1.4.0
 
 - Add support with input string with length specifier

diff --git a/lwjson/src/include/lwjson/lwjson.h b/lwjson/src/include/lwjson/lwjson.h
@@ -192,6 +192,20 @@ lwjson_get_val_string(const lwjson_token_t* token, size_t* str_len) {
  */
 #define         lwjson_get_val_string_length(token)     ((size_t)(((token) != NULL && (token)->type == LWJSON_TYPE_STRING) ? (token)->u.str.token_value_len : 0))
 
+/**
+ * \brief           Compare string token with user input string for a case-sensitive match
+ * \param[in]       token: Token with string type
+ * \param[out]      str: String to compare
+ * \return          `1` if equal, `0` otherwise
+ */
+static inline uint8_t
+lwjson_string_compare(const lwjson_token_t* token, const char* str) {
+    if (token != NULL && token->type == LWJSON_TYPE_STRING) {
+        return strncmp(token->u.str.token_value, str, token->u.str.token_value_len) == 0;
+    }
+    return 0;
+}
+
 /**
  * \}
  */

diff --git a/test/test.c b/test/test.c
@@ -379,6 +379,10 @@ test_find_function(void) {
         && lwjson_get_val_string_length(token) == 11
         && strncmp(token->u.str.token_value, "\\t\\u1234abc", 11) == 0);
 
+    /* Check string compare */
+    RUN_TEST((token = lwjson_find_ex(&lwjson, NULL, "my_obj.arr.#.#.my_key")) != NULL
+                && lwjson_string_compare(token, "my_text"));
+
 #undef RUN_TEST
 
     /* Call this once JSON usage is finished */