ChessPlayer* EngineBuilder::create(QObject* receiver,
const char* method,
QObject* parent) const
{
QString path(QDir::currentPath());
EngineProcess* process = new EngineProcess();
QString workDir = m_config.workingDirectory();
QString cmd = m_config.command();
if (workDir.isEmpty())
{
process->setWorkingDirectory(QDir::tempPath());
QFileInfo cmdInfo(cmd);
if (cmdInfo.isFile())
cmd = cmdInfo.absoluteFilePath();
}
else
{
// Make sure the path to the executable is resolved
// in the engine's working directory
if (!QDir::setCurrent(workDir))
{
qWarning() << "Invalid working directory:" << workDir;
delete process;
return 0;
}
process->setWorkingDirectory(QDir::currentPath());
}
if (!m_config.arguments().isEmpty())
process->start(cmd, m_config.arguments());
else
process->start(cmd);
bool ok = process->waitForStarted();
if (!workDir.isEmpty())
QDir::setCurrent(path);
if (!ok)
{
qWarning() << "Cannot start engine" << m_config.command();
delete process;
return 0;
}
ChessEngine* engine = EngineFactory::create(m_config.protocol());
Q_ASSERT(engine != 0);
engine->setParent(parent);
if (receiver != 0 && method != 0)
QObject::connect(engine, SIGNAL(debugMessage(QString)),
receiver, method);
engine->setDevice(process);
engine->applyConfiguration(m_config);
engine->start();
return engine;
}
ChessPlayer* EngineBuilder::create(QObject* receiver,
const char* method,
QObject* parent,
QString* error) const
{
QString workDir = m_config.workingDirectory();
QString cmd = m_config.command().trimmed();
QString stderrFile = m_config.stderrFile();
if (cmd.isEmpty())
{
setError(error, tr("Empty engine command"));
return nullptr;
}
if (!EngineFactory::protocols().contains(m_config.protocol()))
{
setError(error, tr("Unknown chess protocol: %1")
.arg(m_config.protocol()));
return nullptr;
}
EngineProcess* process = new EngineProcess();
if (workDir.isEmpty())
{
process->setWorkingDirectory(QDir::tempPath());
QFileInfo cmdInfo(cmd);
if (cmdInfo.isFile())
cmd = cmdInfo.absoluteFilePath();
}
else
process->setWorkingDirectory(workDir);
if (!stderrFile.isEmpty())
process->setStandardErrorFile(stderrFile, QIODevice::Append);
if (!m_config.arguments().isEmpty())
process->start(cmd, m_config.arguments());
else
process->start(cmd);
bool ok = process->waitForStarted();
if (!ok)
{
setError(error, tr("Cannot execute command: %1")
.arg(m_config.command()));
delete process;
return nullptr;
}
ChessEngine* engine = EngineFactory::create(m_config.protocol());
Q_ASSERT(engine != nullptr);
engine->setParent(parent);
if (receiver != nullptr && method != nullptr)
QObject::connect(engine, SIGNAL(debugMessage(QString)),
receiver, method);
engine->setDevice(process);
engine->applyConfiguration(m_config);
engine->start();
return engine;
}