Function extract_text_content

tests/test_mcp.c:7895–7924

Extract the inner "text" value from an MCP tool result JSON. * The MCP envelope is: {"content":[{"type":"text","text":" "}]} * This returns the unescaped inner JSON. Caller must free. */

 * The MCP envelope is: {"content":[{"type":"text","text":"<inner json>"}]}
 * This returns the unescaped inner JSON. Caller must free. */
static char *extract_text_content(const char *mcp_result) {
    if (!mcp_result)
        return NULL;
    yyjson_doc *doc = yyjson_read(mcp_result, strlen(mcp_result), 0);
    if (!doc)
        return strdup(mcp_result); /* fallback */
    yyjson_val *root = yyjson_doc_get_root(doc);
    yyjson_val *content = yyjson_obj_get(root, "content");
    if (!content) {
        /* Handle JSON-RPC wrapper: {"jsonrpc":...,"result":{"content":[...]}} */
        yyjson_val *rpc_result = yyjson_obj_get(root, "result");
        if (rpc_result) {
            content = yyjson_obj_get(rpc_result, "content");
        }
    }
    if (!content || !yyjson_is_arr(content)) {
        yyjson_doc_free(doc);
        return strdup(mcp_result);
    }
    yyjson_val *item = yyjson_arr_get(content, 0);
    if (!item) {
        yyjson_doc_free(doc);
        return strdup(mcp_result);
    }
    yyjson_val *text = yyjson_obj_get(item, "text");
    const char *str = yyjson_get_str(text);
    char *result = str ? strdup(str) : strdup(mcp_result);
    yyjson_doc_free(doc);
    return result;
}

/* Call get_code_snippet and extract inner text content.
 * Caller must free returned string. */