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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "qqmldebugprocess_p.h"
#include <QtCore/qdebug.h>
#include <QtCore/qfileinfo.h>
#include <QtCore/qdir.h>
#include <QtCore/qregularexpression.h>
#include <QtTest/qtest.h>
QQmlDebugProcess::QQmlDebugProcess(const QString &executable, QObject *parent)
: QObject(parent)
, m_executable(executable)
{
m_process.setProcessChannelMode(QProcess::MergedChannels);
connect(&m_process, &QProcess::readyReadStandardOutput,
this, &QQmlDebugProcess::processAppOutput);
connect(&m_process, &QProcess::errorOccurred,
this, &QQmlDebugProcess::processError);
connect(&m_process, QOverload<int, QProcess::ExitStatus>::of(&QProcess::finished),
this, [this]() {
if (m_state == SessionUnknown)
m_state = SessionFailed;
emit finished();
});
}
QQmlDebugProcess::~QQmlDebugProcess()
{
stop();
}
QString QQmlDebugProcess::stateString() const
{
QString stateStr;
switch (m_process.state()) {
case QProcess::NotRunning: {
stateStr = "not running";
if (m_process.exitStatus() == QProcess::CrashExit)
stateStr += " (crashed!)";
else
stateStr += ", return value " + QString::number(m_process.exitCode());
break;
}
case QProcess::Starting:
stateStr = "starting";
break;
case QProcess::Running:
stateStr = "running";
break;
}
return stateStr;
}
void QQmlDebugProcess::start(const QStringList &arguments)
{
#ifdef Q_OS_MACOS
// make sure m_executable points to the actual binary even if it's inside an app bundle
QFileInfo binFile(m_executable);
if (!binFile.isExecutable()) {
QDir bundleDir(m_executable + ".app");
if (bundleDir.exists()) {
m_executable = bundleDir.absoluteFilePath("Contents/MacOS/" + binFile.baseName());
//qDebug() << Q_FUNC_INFO << "found bundled binary" << m_executable;
}
}
#endif
m_port = 0;
m_process.setEnvironment(QProcess::systemEnvironment() + m_environment);
m_process.start(m_executable, arguments);
if (!m_process.waitForStarted()) {
qWarning() << "QML Debug Client: Could not launch app " << m_executable
<< ": " << m_process.errorString();
}
}
void QQmlDebugProcess::stop()
{
if (m_process.state() != QProcess::NotRunning) {
disconnect(&m_process, &QProcess::errorOccurred, this, &QQmlDebugProcess::processError);
m_process.kill();
if (!m_process.waitForFinished(10000))
qFatal("Debug process refused to be killed. We need to crash now.");
}
}
void QQmlDebugProcess::setMaximumBindErrors(int ignore)
{
m_maximumBindErrors = ignore;
}
void QQmlDebugProcess::timeout()
{
qWarning() << "Timeout while waiting for QML debugging messages "
"in application output. Process is in state" << m_process.state()
<< ", Output:" << m_output << ".";
}
bool QQmlDebugProcess::waitForSessionStart()
{
if (m_process.state() != QProcess::Running) {
qWarning() << "Could not start up " << m_executable;
return false;
} else if (m_state == SessionStarted) {
return true;
} else if (m_state == SessionFailed) {
return false;
}
if (!QTest::qWaitFor(
[this]() { return m_state == SessionFailed || m_state == SessionStarted; },
15000)) {
timeout();
}
return m_state == SessionStarted;
}
int QQmlDebugProcess::debugPort() const
{
return m_port;
}
bool QQmlDebugProcess::waitForFinished()
{
return m_process.waitForFinished();
}
QProcess::ProcessState QQmlDebugProcess::state() const
{
return m_process.state();
}
QProcess::ExitStatus QQmlDebugProcess::exitStatus() const
{
return m_process.exitStatus();
}
void QQmlDebugProcess::addEnvironment(const QString &environment)
{
m_environment.append(environment);
}
QString QQmlDebugProcess::output() const
{
return m_output;
}
void QQmlDebugProcess::processAppOutput()
{
bool outputFromAppItself = false;
QString newOutput = m_process.readAll();
m_output.append(newOutput);
m_outputBuffer.append(newOutput);
while (true) {
const int nlIndex = m_outputBuffer.indexOf(QLatin1Char('\n'));
if (nlIndex < 0) // no further complete lines
break;
const QString line = m_outputBuffer.left(nlIndex);
m_outputBuffer = m_outputBuffer.right(m_outputBuffer.size() - nlIndex - 1);
if (line.contains("QML Debugger:")) {
auto portRx = QRegularExpression("Waiting for connection on port (\\d+)").match(line);
if (portRx.hasMatch()) {
m_port = portRx.captured(1).toInt();
m_state = SessionStarted;
continue;
}
if (line.contains("Unable to listen")) {
if (++m_receivedBindErrors >= m_maximumBindErrors) {
if (m_maximumBindErrors == 0)
qWarning() << "App was unable to bind to port!";
m_state = SessionFailed;
}
continue;
}
}
// set to true if there is output not coming from the debugger or we don't understand it
outputFromAppItself = true;
}
if (outputFromAppItself)
emit readyReadStandardOutput();
}
void QQmlDebugProcess::processError(QProcess::ProcessError error)
{
qDebug() << "An error occurred while waiting for debug process to become available:";
switch (error) {
case QProcess::FailedToStart:
qDebug() << "Process failed to start.";
break;
case QProcess::Crashed:
qDebug() << "Process crashed.";
break;
case QProcess::Timedout:
qDebug() << "Process timed out.";
break;
case QProcess::WriteError:
qDebug() << "Error while writing to process.";
break;
case QProcess::ReadError:
qDebug() << "Error while reading from process.";
break;
case QProcess::UnknownError:
qDebug() << "Unknown process error.";
break;
}
}
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