we can also print compound types

src/tcap.c

@@ -102,7 +102,7 @@ static inline int next_token_2(const char **token, const char **c) {
 	return 0;
 }
 
-int cb(const void *buf, size_t s, void *app_key) {
+static int cb(const void *buf, size_t s, void *app_key) {
 	struct output_buffer *out = app_key;
 
 	if (out->buf_size - out->used < s)
@@ -189,13 +189,9 @@ found_element:
 			break;
 	}
 
-	/* found our target value, check for primitive types */
-	if (type->elements_count)
-		goto out;
-
-	type->print_struct(type, element, 0, cb, out);
+	if (type->print_struct && out)
+		type->print_struct(type, element, 0, cb, out);
 
-out:
 	return 0;
 
 error:

tests/basic.c

@@ -18,15 +18,17 @@ int main() {
 	i = tcap_extract(tcap, tcap_len, "end.components.1.invoke.opCode.localValue", &out);
 	printf("tcap_extract opcode: returned %i, value %.*s\n", i, (int) out.used, out.buf);
 
-	i = inap_extract(tcap, tcap_len, "ConnectArg", NULL);
-	printf("inap_extract ConnectArg: returned %i\n", i);
+	OUTPUT_BUFFER_INIT(&out, buf);
+	i = inap_extract(tcap, tcap_len, "ConnectArg", &out);
+	printf("inap_extract ConnectArg: returned %i, value %.*s\n", i, (int) out.used, out.buf);
 
 	OUTPUT_BUFFER_INIT(&out, buf);
 	i = inap_extract(tcap, tcap_len, "ConnectArg.cutAndPaste", &out);
-	printf("inap_extract ConnectArg: returned %i, value %.*s\n", i, (int) out.used, out.buf);
+	printf("inap_extract ConnectArg.cutAndPaste: returned %i, value %.*s\n", i, (int) out.used, out.buf);
 
-	i = inap_extract(tcap, tcap_len, "ConnectArg.destinationRoutingAddress", NULL);
-	printf("inap_extract ConnectArg.destinationRoutingAddress: returned %i\n", i);
+	OUTPUT_BUFFER_INIT(&out, buf);
+	i = inap_extract(tcap, tcap_len, "ConnectArg.destinationRoutingAddress", &out);
+	printf("inap_extract ConnectArg.destinationRoutingAddress: returned %i, value %.*s\n", i, (int) out.used, out.buf);
 
 	OUTPUT_BUFFER_INIT(&out, buf);
 	i = inap_extract(tcap, tcap_len, "ConnectArg.destinationRoutingAddress.0", &out);