Utils: Un-seat QtcProcess from ProcessInterface

I find it too confusing to have that inheritance only to enforce
similar interfaces.

Change-Id: I9da68ea59c04f709228e0874460e987115b30f56
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>

src/libs/utils/processinterface.h

@@ -131,7 +131,7 @@ public:
     }
 
     void start() override { m_target->start(); }
-    void interrupt() override { m_target->interrupt(); };
+    void interrupt() override { m_target->interrupt(); }
     void terminate() override { m_target->terminate(); }
     void kill() override { m_target->kill(); }
     void close() override { m_target->close(); }

src/libs/utils/qtcprocess.cpp

@@ -564,19 +564,18 @@ public:
         OtherFailure
     };
 
-    explicit QtcProcessPrivate(QtcProcess *parent, const ProcessSetupData::Ptr &setup)
+    explicit QtcProcessPrivate(QtcProcess *parent)
         : QObject(parent)
         , q(parent)
-        , m_setup(setup)
     {}
 
     ProcessInterface *createProcessInterface()
     {
-        if (m_setup->m_terminalMode != TerminalMode::Off)
+        if (m_setup.m_terminalMode != TerminalMode::Off)
             return new TerminalImpl();
 
-        const ProcessImpl impl = m_setup->m_processImpl == ProcessImpl::Default
-                               ? defaultProcessImpl() : m_setup->m_processImpl;
+        const ProcessImpl impl = m_setup.m_processImpl == ProcessImpl::Default
+                               ? defaultProcessImpl() : m_setup.m_processImpl;
         if (impl == ProcessImpl::QProcess)
             return new QProcessImpl();
         return new ProcessLauncherImpl();
@@ -585,7 +584,7 @@ public:
     void setProcessInterface(ProcessInterface *process)
     {
         m_process.reset(process);
-        m_setup->m_errorString.clear();
+        m_setup.m_errorString.clear();
         m_process->setParent(this);
 
         connect(m_process.get(), &ProcessInterface::started,
@@ -616,21 +615,21 @@ public:
 
     CommandLine fullCommandLine() const
     {
-        if (!m_setup->m_runAsRoot || HostOsInfo::isWindowsHost())
-            return m_setup->m_commandLine;
+        if (!m_setup.m_runAsRoot || HostOsInfo::isWindowsHost())
+            return m_setup.m_commandLine;
         CommandLine rootCommand("sudo", {"-A"});
-        rootCommand.addCommandLineAsArgs(m_setup->m_commandLine);
+        rootCommand.addCommandLineAsArgs(m_setup.m_commandLine);
         return rootCommand;
     }
 
     Environment fullEnvironment() const
     {
         Environment env;
-        if (m_setup->m_haveEnv) {
-            if (m_setup->m_environment.size() == 0)
+        if (m_setup.m_haveEnv) {
+            if (m_setup.m_environment.size() == 0)
                 qWarning("QtcProcess::start: Empty environment set when running '%s'.",
-                         qPrintable(m_setup->m_commandLine.executable().toString()));
-            env = m_setup->m_environment;
+                         qPrintable(m_setup.m_commandLine.executable().toString()));
+            env = m_setup.m_environment;
         } else {
             env = Environment::systemEnvironment();
         }
@@ -643,7 +642,7 @@ public:
 
     QtcProcess *q;
     std::unique_ptr<ProcessInterface> m_process;
-    ProcessSetupData::Ptr m_setup;
+    ProcessSetupData m_setup;
 
     void slotTimeout();
     void slotFinished();
@@ -708,8 +707,8 @@ qint64 ProcessInterface::applicationMainThreadID() const
 */
 
 QtcProcess::QtcProcess(QObject *parent)
-    : ProcessInterface(parent),
-    d(new QtcProcessPrivate(this, m_setup))
+    : QObject(parent),
+    d(new QtcProcessPrivate(this))
 {
     static int qProcessExitStatusMeta = qRegisterMetaType<QProcess::ExitStatus>();
     static int qProcessProcessErrorMeta = qRegisterMetaType<QProcess::ProcessError>();
@@ -773,90 +772,90 @@ void QtcProcess::setProcessInterface(ProcessInterface *interface)
 {
     d->setProcessInterface(interface);
     // Make a copy, don't share, until we get rid of fullCommandLine() and fullEnvironment()
-    *d->m_process->m_setup = *d->m_setup;
+    *d->m_process->m_setup = d->m_setup;
 }
 
 void QtcProcess::setProcessImpl(ProcessImpl processImpl)
 {
-    d->m_setup->m_processImpl = processImpl;
+    d->m_setup.m_processImpl = processImpl;
 }
 
 ProcessMode QtcProcess::processMode() const
 {
-    return d->m_setup->m_processMode;
+    return d->m_setup.m_processMode;
 }
 
 void QtcProcess::setTerminalMode(TerminalMode mode)
 {
-    d->m_setup->m_terminalMode = mode;
+    d->m_setup.m_terminalMode = mode;
 }
 
 TerminalMode QtcProcess::terminalMode() const
 {
-    return d->m_setup->m_terminalMode;
+    return d->m_setup.m_terminalMode;
 }
 
 void QtcProcess::setProcessMode(ProcessMode processMode)
 {
-    d->m_setup->m_processMode = processMode;
+    d->m_setup.m_processMode = processMode;
 }
 
 void QtcProcess::setEnvironment(const Environment &env)
 {
-    d->m_setup->m_environment = env;
-    d->m_setup->m_haveEnv = true;
+    d->m_setup.m_environment = env;
+    d->m_setup.m_haveEnv = true;
 }
 
 void QtcProcess::unsetEnvironment()
 {
-    d->m_setup->m_environment = Environment();
-    d->m_setup->m_haveEnv = false;
+    d->m_setup.m_environment = Environment();
+    d->m_setup.m_haveEnv = false;
 }
 
 const Environment &QtcProcess::environment() const
 {
-    return d->m_setup->m_environment;
+    return d->m_setup.m_environment;
 }
 
 bool QtcProcess::hasEnvironment() const
 {
-    return d->m_setup->m_haveEnv;
+    return d->m_setup.m_haveEnv;
 }
 
 void QtcProcess::setRemoteEnvironment(const Environment &environment)
 {
-    d->m_setup->m_remoteEnvironment = environment;
+    d->m_setup.m_remoteEnvironment = environment;
 }
 
 Environment QtcProcess::remoteEnvironment() const
 {
-    return d->m_setup->m_remoteEnvironment;
+    return d->m_setup.m_remoteEnvironment;
 }
 
 void QtcProcess::setCommand(const CommandLine &cmdLine)
 {
-    if (d->m_setup->m_workingDirectory.needsDevice() && cmdLine.executable().needsDevice()) {
-        QTC_CHECK(d->m_setup->m_workingDirectory.host() == cmdLine.executable().host());
+    if (d->m_setup.m_workingDirectory.needsDevice() && cmdLine.executable().needsDevice()) {
+        QTC_CHECK(d->m_setup.m_workingDirectory.host() == cmdLine.executable().host());
     }
-    d->m_setup->m_commandLine = cmdLine;
+    d->m_setup.m_commandLine = cmdLine;
 }
 
 const CommandLine &QtcProcess::commandLine() const
 {
-    return d->m_setup->m_commandLine;
+    return d->m_setup.m_commandLine;
 }
 
 FilePath QtcProcess::workingDirectory() const
 {
-    return d->m_setup->m_workingDirectory;
+    return d->m_setup.m_workingDirectory;
 }
 
 void QtcProcess::setWorkingDirectory(const FilePath &dir)
 {
-    if (dir.needsDevice() && d->m_setup->m_commandLine.executable().needsDevice()) {
-        QTC_CHECK(dir.host() == d->m_setup->m_commandLine.executable().host());
+    if (dir.needsDevice() && d->m_setup.m_commandLine.executable().needsDevice()) {
+        QTC_CHECK(dir.host() == d->m_setup.m_commandLine.executable().host());
     }
-    d->m_setup->m_workingDirectory = dir;
+    d->m_setup.m_workingDirectory = dir;
 }
 
 void QtcProcess::setUseCtrlCStub(bool enabled)
@@ -865,7 +864,7 @@ void QtcProcess::setUseCtrlCStub(bool enabled)
     // Qt Creator otherwise, because they share the same Windows console.
     // See QTCREATORBUG-11995 for details.
 #ifndef QT_DEBUG
-    d->m_setup->m_useCtrlCStub = enabled;
+    d->m_setup.m_useCtrlCStub = enabled;
 #else
     Q_UNUSED(enabled)
 #endif
@@ -877,7 +876,7 @@ void QtcProcess::start()
 //    QTC_ASSERT(state() == QProcess::NotRunning, return);
 
     ProcessInterface *processImpl = nullptr;
-    if (d->m_setup->m_commandLine.executable().needsDevice()) {
+    if (d->m_setup.m_commandLine.executable().needsDevice()) {
         if (s_deviceHooks.processImplHook) { // TODO: replace "if" with an assert for the hook
             processImpl = s_deviceHooks.processImplHook(commandLine().executable());
         }
@@ -929,7 +928,7 @@ BOOL CALLBACK sendInterruptMessageToAllWindowsOfProcess_enumWnd(HWND hwnd, LPARA
 void QtcProcess::terminate()
 {
 #ifdef Q_OS_WIN
-    if (d->m_setup->m_useCtrlCStub)
+    if (d->m_setup.m_useCtrlCStub)
         EnumWindows(sendShutDownMessageToAllWindowsOfProcess_enumWnd, processId());
     else
 #endif
@@ -940,7 +939,7 @@ void QtcProcess::terminate()
 void QtcProcess::interrupt()
 {
 #ifdef Q_OS_WIN
-    if (d->m_setup->m_useCtrlCStub)
+    if (d->m_setup.m_useCtrlCStub)
         EnumWindows(sendInterruptMessageToAllWindowsOfProcess_enumWnd, processId());
     else
 #endif
@@ -958,71 +957,71 @@ bool QtcProcess::startDetached(const CommandLine &cmd, const FilePath &workingDi
 
 void QtcProcess::setLowPriority()
 {
-    d->m_setup->m_lowPriority = true;
+    d->m_setup.m_lowPriority = true;
 }
 
 void QtcProcess::setDisableUnixTerminal()
 {
-    d->m_setup->m_unixTerminalDisabled = true;
+    d->m_setup.m_unixTerminalDisabled = true;
 }
 
 void QtcProcess::setAbortOnMetaChars(bool abort)
 {
-    d->m_setup->m_abortOnMetaChars = abort;
+    d->m_setup.m_abortOnMetaChars = abort;
 }
 
 void QtcProcess::setRunAsRoot(bool on)
 {
-    d->m_setup->m_runAsRoot = on;
+    d->m_setup.m_runAsRoot = on;
 }
 
 bool QtcProcess::isRunAsRoot() const
 {
-    return d->m_setup->m_runAsRoot;
+    return d->m_setup.m_runAsRoot;
 }
 
 void QtcProcess::setStandardInputFile(const QString &inputFile)
 {
-    d->m_setup->m_standardInputFile = inputFile;
+    d->m_setup.m_standardInputFile = inputFile;
 }
 
 QString QtcProcess::toStandaloneCommandLine() const
 {
     QStringList parts;
     parts.append("/usr/bin/env");
-    if (!d->m_setup->m_workingDirectory.isEmpty()) {
+    if (!d->m_setup.m_workingDirectory.isEmpty()) {
         parts.append("-C");
-        d->m_setup->m_workingDirectory.path();
+        d->m_setup.m_workingDirectory.path();
     }
     parts.append("-i");
-    if (d->m_setup->m_environment.size() > 0) {
-        const QStringList envVars = d->m_setup->m_environment.toStringList();
+    if (d->m_setup.m_environment.size() > 0) {
+        const QStringList envVars = d->m_setup.m_environment.toStringList();
         std::transform(envVars.cbegin(), envVars.cend(),
                        std::back_inserter(parts), ProcessArgs::quoteArgUnix);
     }
-    parts.append(d->m_setup->m_commandLine.executable().path());
-    parts.append(d->m_setup->m_commandLine.splitArguments());
+    parts.append(d->m_setup.m_commandLine.executable().path());
+    parts.append(d->m_setup.m_commandLine.splitArguments());
     return parts.join(" ");
 }
 
 void QtcProcess::setExtraData(const QString &key, const QVariant &value)
 {
-    d->m_setup->m_extraData.insert(key, value);
+    d->m_setup.m_extraData.insert(key, value);
 }
 
 QVariant QtcProcess::extraData(const QString &key) const
 {
-    return d->m_setup->m_extraData.value(key);
+    return d->m_setup.m_extraData.value(key);
 }
 
 void QtcProcess::setExtraData(const QVariantHash &extraData)
 {
-    d->m_setup->m_extraData = extraData;
+    d->m_setup.m_extraData = extraData;
 }
 
 QVariantHash QtcProcess::extraData() const
 {
-    return d->m_setup->m_extraData;
+    return d->m_setup.m_extraData;
 }
 
 void QtcProcess::setRemoteProcessHooks(const DeviceProcessHooks &hooks)
@@ -1107,7 +1106,7 @@ bool QtcProcess::readDataFromProcess(int timeoutS,
         }
         // Prompt user, pretend we have data if says 'No'.
         const bool hang = !hasData && !finished;
-        hasData = hang && showTimeOutMessageBox && !askToKill(d->m_setup->m_commandLine.executable().path());
+        hasData = hang && showTimeOutMessageBox && !askToKill(d->m_setup.m_commandLine.executable().path());
     } while (hasData && !finished);
     if (syncDebug)
         qDebug() << "<readDataFromProcess" << finished;
@@ -1249,7 +1248,7 @@ qint64 QtcProcess::applicationMainThreadID() const
 
 void QtcProcess::setProcessChannelMode(QProcess::ProcessChannelMode mode)
 {
-    d->m_setup->m_processChannelMode = mode;
+    d->m_setup.m_processChannelMode = mode;
 }
 
 QProcess::ProcessError QtcProcess::error() const
@@ -1277,7 +1276,7 @@ QString QtcProcess::errorString() const
 {
     if (d->m_process)
         return d->m_process->errorString();
-    return d->m_setup->m_errorString;
+    return d->m_setup.m_errorString;
 }
 
 void QtcProcess::setErrorString(const QString &str)
@@ -1285,7 +1284,7 @@ void QtcProcess::setErrorString(const QString &str)
     if (d->m_process)
         d->m_process->setErrorString(str);
     else
-        d->m_setup->m_errorString = str;
+        d->m_setup.m_errorString = str;
 }
 
 qint64 QtcProcess::processId() const
@@ -1584,7 +1583,7 @@ void QtcProcess::setExitCodeInterpreter(const ExitCodeInterpreter &interpreter)
 
 void QtcProcess::setWriteData(const QByteArray &writeData)
 {
-    d->m_setup->m_writeData = writeData;
+    d->m_setup.m_writeData = writeData;
 }
 
 #ifdef QT_GUI_LIB
@@ -1598,7 +1597,7 @@ void QtcProcess::runBlocking(EventLoopMode eventLoopMode)
 {
     // FIXME: Implement properly
 
-    if (d->m_setup->m_commandLine.executable().needsDevice()) {
+    if (d->m_setup.m_commandLine.executable().needsDevice()) {
         QtcProcess::start();
         waitForFinished();
         return;
@@ -1696,7 +1695,7 @@ void QtcProcessPrivate::slotTimeout()
             qDebug() << Q_FUNC_INFO << "HANG detected, killing";
         m_waitingForUser = true;
         const bool terminate = !m_timeOutMessageBoxEnabled
-            || askToKill(m_setup->m_commandLine.executable().toString());
+            || askToKill(m_setup.m_commandLine.executable().toString());
         m_waitingForUser = false;
         if (terminate) {
             q->stopProcess();

src/libs/utils/qtcprocess.h

@@ -30,13 +30,14 @@
 #include "environment.h"
 #include "commandline.h"
 #include "processenums.h"
-#include "processinterface.h"
 #include "qtcassert.h"
 
 #include <QProcess>
 
-QT_FORWARD_DECLARE_CLASS(QDebug)
-QT_FORWARD_DECLARE_CLASS(QTextCodec)
+QT_BEGIN_NAMESPACE
+class QDebug;
+class QTextCodec;
+QT_END_NAMESPACE
 
 class tst_QtcProcess;
 
@@ -45,8 +46,9 @@ namespace Utils {
 namespace Internal { class QtcProcessPrivate; }
 
 class DeviceProcessHooks;
+class ProcessInterface;
 
-class QTCREATOR_UTILS_EXPORT QtcProcess : public ProcessInterface
+class QTCREATOR_UTILS_EXPORT QtcProcess : public QObject
 {
     Q_OBJECT
 
@@ -56,31 +58,31 @@ public:
 
     // ProcessInterface related
 
-    void start() override;
-    void interrupt() override;
-    void terminate() override;
-    void kill() override;
-    void close() final;
+    virtual void start();
+    virtual void interrupt();
+    virtual void terminate();
+    virtual void kill();
+    void close();
 
-    QByteArray readAllStandardOutput() override;
-    QByteArray readAllStandardError() override;
-    qint64 write(const QByteArray &input) override;
+    virtual QByteArray readAllStandardOutput();
+    virtual QByteArray readAllStandardError();
+    virtual qint64 write(const QByteArray &input);
 
-    qint64 processId() const override;
-    QProcess::ProcessState state() const override;
-    int exitCode() const override;
-    QProcess::ExitStatus exitStatus() const override;
+    virtual qint64 processId() const;
+    virtual QProcess::ProcessState state() const;
+    virtual int exitCode() const;
+    virtual QProcess::ExitStatus exitStatus() const;
 
-    QProcess::ProcessError error() const final;
-    QString errorString() const override;
-    void setErrorString(const QString &str) final;
+    QProcess::ProcessError error() const;
+    virtual QString errorString() const;
+    void setErrorString(const QString &str);
 
-    bool waitForStarted(int msecs = 30000) final;
-    bool waitForReadyRead(int msecs = 30000) final;
-    bool waitForFinished(int msecs = 30000) final;
+    bool waitForStarted(int msecs = 30000);
+    bool waitForReadyRead(int msecs = 30000);
+    bool waitForFinished(int msecs = 30000);
 
-    void kickoffProcess() final;
-    qint64 applicationMainThreadID() const final;
+    void kickoffProcess();
+    qint64 applicationMainThreadID() const;
 
     // ProcessSetupData related
 
@@ -185,6 +187,13 @@ public:
 
     QString toStandaloneCommandLine() const;
 
+signals:
+    void started();
+    void finished();
+    void errorOccurred(QProcess::ProcessError error);
+    void readyReadStandardOutput();
+    void readyReadStandardError();
+
 protected:
     // TODO: remove these methods on QtcProcess de-virtualization
     virtual void emitStarted();