Function parse_generated_message_ex

ds4_server.c:4447–4625

                buf_puts(&qualified, namespace);
                buf_puts(&qualified, name);
                tc.name = buf_take(&qualified);
            } else {
                tc.name = xstrdup(name ? name : "");
            }
            /* A Responses turn that has both message text and tool calls splits
             * them across separate output items; the chat template renders the
             * second assistant record without an `<|Assistant|>` prefix, leaving
             * the tool call bare. Merge into the previous assistant message
             * when nothing user-like / tool-output-like came between them. */
            chat_msg *last = msgs->len ? &msgs->v[msgs->len - 1] : NULL;
            if (last && !strcmp(last->role, "assistant")) {
                if (pending_reasoning.len && (!last->reasoning || !last->reasoning[0])) {
                    free(last->reasoning);
                    last->reasoning = buf_take(&pending_reasoning);
                }
                tool_calls_push(&last->calls, tc);
            } else {
                chat_msg msg = {0};
                msg.role = xstrdup("assistant");
                msg.content = xstrdup("");
                if (pending_reasoning.len) msg.reasoning = buf_take(&pending_reasoning);
                tool_calls_push(&msg.calls, tc);
                chat_msgs_push(msgs, msg);
            }
        } else if (!strcmp(t, "function_call_output") || !strcmp(t, "custom_tool_call_output")) {
            chat_msg msg = {0};
            msg.role = xstrdup("tool");
            msg.content = output ? output : xstrdup("");
            output = NULL;
            msg.images = output_images;
            memset(&output_images, 0, sizeof(output_images));
            if (call_id || item_id) {
                chat_msg_add_tool_call_id(&msg, call_id ? call_id : item_id);
            }
            chat_msgs_push(msgs, msg);
        } else if (!strcmp(t, "reasoning")) {
            /* Stash so it merges into the next assistant message. summary is the
             * short-form list, content is the verbose chain. Either can be empty. */
            if (summary && summary[0]) {
                if (pending_reasoning.len) buf_putc(&pending_reasoning, '\n');
                buf_puts(&pending_reasoning, summary);
            }
            if (content && content[0]) {
                if (pending_reasoning.len) buf_putc(&pending_reasoning, '\n');
                buf_puts(&pending_reasoning, content);
            }
        } else if (!strcmp(t, "local_shell_call") || !strcmp(t, "web_search_call") ||
                   !strcmp(t, "tool_search_call") || !strcmp(t, "image_generation_call"))
        {
            /* Hosted-tool history isn't natively supported (DS4 doesn't register
             * these tools), but a Codex client may still replay them when the
             * model used them in a prior turn. Surface them as function_call
             * shaped history so the next prompt retains the action that ran. */
            tool_call tc = {0};
            tc.id = xstrdup(call_id ? call_id : item_id ? item_id : "");
            if (!strcmp(t, "tool_search_call")) {
                tc.name = xstrdup("tool_search");
            } else if (!strcmp(t, "local_shell_call")) {