Function luaConsoleLog

app/src/DataModel/Scripting/LuaCompat.cpp:258–291

* @brief Lua C closure that logs its arguments tab-separated through the Qt message * system (so output lands in the application console, like JS console.log); * the message type travels in the closure's first upvalue so one function * serves print() and every console.* level. */

 *        serves print() and every console.* level.
 */
static int luaConsoleLog(lua_State* L)
{
  Q_ASSERT(L != nullptr);

  const int argc = lua_gettop(L);
  QByteArray message;
  for (int i = 1; i <= argc; ++i) {
    size_t length    = 0;
    const char* text = luaL_tolstring(L, i, &length);
    Q_ASSERT(text != nullptr);
    if (i > 1)
      message.append('\t');

    message.append(text, static_cast<qsizetype>(length));
    lua_pop(L, 1);
  }

  switch (static_cast<QtMsgType>(lua_tointeger(L, lua_upvalueindex(1)))) {
    case QtInfoMsg:
      qInfo().noquote() << QString::fromUtf8(message);
      break;
    case QtWarningMsg:
      qWarning().noquote() << QString::fromUtf8(message);
      break;
    case QtCriticalMsg:
      qCritical().noquote() << QString::fromUtf8(message);
      break;
    default:
      qDebug().noquote() << QString::fromUtf8(message);
      break;
  }

  return 0;
}

/**
 * @brief Installs a JS-style console table and replaces print() so script output is