arg_append any content is ok

port/linux/test/arg-test.cpp

@@ -67,3 +67,12 @@ TEST(arg_test, null) {
     arg_deinit(arg);
     EXPECT_EQ(pikaMemNow(), 0);
 }
+
+TEST(arg_test, append) {
+    Arg* arg = arg_setStr(NULL, (char*)"", (char*)"test");
+    arg = arg_append(arg, (void*)"hello", sizeof("hello"));
+    EXPECT_STREQ(arg_getStr(arg), "test");
+    EXPECT_STREQ(arg_getStr(arg) + sizeof("test"), (char*)"hello");
+    arg_deinit(arg);
+    EXPECT_EQ(pikaMemNow(), 0);
+}

src/dataArg.c

@@ -174,7 +174,8 @@ Arg* arg_setNull(Arg* self) {
 }
 
 Arg* arg_setFloat(Arg* self, char* name, float val) {
-    return content_init(name, ARG_TYPE_FLOAT, (uint8_t*)&val, sizeof(val), NULL);
+    return content_init(name, ARG_TYPE_FLOAT, (uint8_t*)&val, sizeof(val),
+                        NULL);
 }
 
 float arg_getFloat(Arg* self) {
@@ -246,3 +247,17 @@ Arg* arg_copy(Arg* argToBeCopy) {
     argCopied = arg_setType(argCopied, arg_getType(argToBeCopy));
     return argCopied;
 }
+
+Arg* arg_append(Arg* arg_in, void* new_content, size_t new_size) {
+    uint8_t* old_content = arg_getContent(arg_in);
+    size_t old_size = arg_getContentSize(arg_in);
+    /* create arg_out */
+    Arg* arg_out = arg_setContent(NULL, NULL, old_size + new_size);
+    /* copy old content */
+    __platform_memcpy(arg_getContent(arg_out), old_content, old_size);
+    /* copy new content */
+    __platform_memcpy(arg_getContent(arg_out) + old_size, new_content,
+                      new_size);
+    arg_deinit(arg_in);
+    return arg_out;
+}

src/dataArg.h

@@ -111,4 +111,6 @@ Arg* arg_init(Arg* self, void* voidPointer);
 void arg_deinit(Arg* self);
 
 Arg* New_arg(void* voidPointer);
+Arg* arg_append(Arg* arg_in, void* new_content, size_t new_size);
+
 #endif