Docker: validate clangd version

Do not automatically setup a clangd that is too old and mark them as
invalid if they are manually selected.

Change-Id: Ie9662a8821df8fc678eabc4b8a08375723b4d1c3
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: hjk <hjk@qt.io>

src/libs/utils/CMakeLists.txt

@@ -21,6 +21,7 @@ add_qtc_library(Utils
     changeset.cpp changeset.h
     checkablemessagebox.cpp checkablemessagebox.h
     classnamevalidatinglineedit.cpp classnamevalidatinglineedit.h
+    clangutils.cpp clangutils.h
     codegeneration.cpp codegeneration.h
     commandline.cpp commandline.h
     completinglineedit.cpp completinglineedit.h

src/libs/utils/clangutils.cpp

@@ -0,0 +1,66 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include "clangutils.h"
+
+#include "filepath.h"
+#include "qtcprocess.h"
+#include "utilstr.h"
+
+#include <QVersionNumber>
+
+namespace Utils {
+
+static QVersionNumber getClangdVersion(const FilePath &clangdFilePath)
+{
+    QtcProcess clangdProc;
+    clangdProc.setCommand({clangdFilePath, {"--version"}});
+    clangdProc.runBlocking();
+    if (clangdProc.result() != ProcessResult::FinishedWithSuccess)
+        return {};
+    const QString output = clangdProc.allOutput();
+    static const QString versionPrefix = "clangd version ";
+    const int prefixOffset = output.indexOf(versionPrefix);
+    if (prefixOffset == -1)
+        return {};
+    return QVersionNumber::fromString(output.mid(prefixOffset + versionPrefix.length()));
+}
+
+QVersionNumber clangdVersion(const FilePath &clangd)
+{
+    static QHash<FilePath, QPair<QDateTime, QVersionNumber>> versionCache;
+    const QDateTime timeStamp = clangd.lastModified();
+    const auto it = versionCache.find(clangd);
+    if (it == versionCache.end()) {
+        const QVersionNumber version = getClangdVersion(clangd);
+        versionCache.insert(clangd, {timeStamp, version});
+        return version;
+    }
+    if (it->first != timeStamp) {
+        it->first = timeStamp;
+        it->second = getClangdVersion(clangd);
+    }
+    return it->second;
+}
+
+bool checkClangdVersion(const FilePath &clangd, QString *error)
+{
+    const QVersionNumber version = clangdVersion(clangd);
+    if (version >= minimumClangdVersion())
+        return true;
+    if (error) {
+        *error = version.isNull()
+                     ? Tr::tr("Failed to retrieve clangd version: Unexpected clangd output.")
+                     : Tr::tr("The clangd version is %1, but %2 or greater is required.")
+                           .arg(version.toString())
+                           .arg(minimumClangdVersion().majorVersion());
+    }
+    return false;
+}
+
+QVersionNumber minimumClangdVersion()
+{
+    return QVersionNumber(14);
+}
+
+} // namespace Utils

src/libs/utils/clangutils.h

@@ -0,0 +1,20 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#pragma once
+
+#include "utils_global.h"
+
+QT_BEGIN_NAMESPACE
+class QVersionNumber;
+QT_END_NAMESPACE
+
+namespace Utils {
+
+class FilePath;
+
+QTCREATOR_UTILS_EXPORT QVersionNumber clangdVersion(const FilePath &clangd);
+QTCREATOR_UTILS_EXPORT bool checkClangdVersion(const FilePath &clangd, QString *error = nullptr);
+QTCREATOR_UTILS_EXPORT QVersionNumber minimumClangdVersion();
+
+} // namespace Utils

src/libs/utils/utils.qbs

@@ -64,6 +64,8 @@ Project {
             "changeset.h",
             "checkablemessagebox.cpp",
             "checkablemessagebox.h",
+            "clangutils.cpp",
+            "clangutils.h",
             "classnamevalidatinglineedit.cpp",
             "classnamevalidatinglineedit.h",
             "codegeneration.cpp",

src/plugins/cppeditor/cppcodemodelsettings.cpp

@@ -332,38 +332,6 @@ void ClangdSettings::setData(const Data &data)
     }
 }
 
-static QVersionNumber getClangdVersion(const FilePath &clangdFilePath)
-{
-    Utils::QtcProcess clangdProc;
-    clangdProc.setCommand({clangdFilePath, {"--version"}});
-    clangdProc.start();
-    if (!clangdProc.waitForFinished())
-        return{};
-    const QString output = clangdProc.allOutput();
-    static const QString versionPrefix = "clangd version ";
-    const int prefixOffset = output.indexOf(versionPrefix);
-    if (prefixOffset == -1)
-        return {};
-    return QVersionNumber::fromString(output.mid(prefixOffset + versionPrefix.length()));
-}
-
-QVersionNumber ClangdSettings::clangdVersion(const FilePath &clangdFilePath)
-{
-    static QHash<Utils::FilePath, QPair<QDateTime, QVersionNumber>> versionCache;
-    const QDateTime timeStamp = clangdFilePath.lastModified();
-    const auto it = versionCache.find(clangdFilePath);
-    if (it == versionCache.end()) {
-        const QVersionNumber version = getClangdVersion(clangdFilePath);
-        versionCache.insert(clangdFilePath, {timeStamp, version});
-        return version;
-    }
-    if (it->first != timeStamp) {
-        it->first = timeStamp;
-        it->second = getClangdVersion(clangdFilePath);
-    }
-    return it->second;
-}
-
 static FilePath getClangHeadersPathFromClang(const FilePath &clangdFilePath)
 {
     const FilePath clangFilePath = clangdFilePath.absolutePath().pathAppended("clang")
@@ -391,7 +359,7 @@ static FilePath getClangHeadersPath(const FilePath &clangdFilePath)
     if (!headersPath.isEmpty())
         return headersPath;
 
-    const QVersionNumber version = ClangdSettings::clangdVersion(clangdFilePath);
+    const QVersionNumber version = Utils::clangdVersion(clangdFilePath);
     QTC_ASSERT(!version.isNull(), return {});
     static const QStringList libDirs{"lib", "lib64"};
     for (const QString &libDir : libDirs) {

src/plugins/cppeditor/cppcodemodelsettings.h

@@ -6,6 +6,7 @@
 #include "clangdiagnosticconfig.h"
 #include "cppeditor_global.h"
 
+#include <utils/clangutils.h>
 #include <utils/fileutils.h>
 #include <utils/id.h>
 
@@ -159,8 +160,7 @@ public:
     void setData(const Data &data);
     Data data() const { return m_data; }
 
-    static QVersionNumber clangdVersion(const Utils::FilePath &clangdFilePath);
-    QVersionNumber clangdVersion() const { return clangdVersion(clangdFilePath()); }
+    QVersionNumber clangdVersion() const { return Utils::clangdVersion(clangdFilePath()); }
     Utils::FilePath clangdIncludePath() const;
     static Utils::FilePath clangdUserConfigFilePath();
 

src/plugins/cppeditor/cppcodemodelsettingspage.cpp

@@ -441,17 +441,9 @@ ClangdSettingsWidget::ClangdSettingsWidget(const ClangdSettings::Data &settingsD
         if (!d->clangdChooser.isValid())
             return;
         const Utils::FilePath clangdPath = d->clangdChooser.filePath();
-        const QVersionNumber clangdVersion = ClangdSettings::clangdVersion(clangdPath);
-        if (clangdVersion.isNull()) {
-            labelSetter.setWarning(Tr::tr("Failed to retrieve clangd version: "
-                                          "Unexpected clangd output."));
-            return;
-        }
-        if (clangdVersion < QVersionNumber(14)) {
-            labelSetter.setWarning(Tr::tr("The clangd version is %1, but %2 or greater is required.")
-                                   .arg(clangdVersion.toString()).arg(14));
-            return;
-        }
+        QString errorMessage;
+        if (!Utils::checkClangdVersion(clangdPath, &errorMessage))
+            labelSetter.setWarning(errorMessage);
     };
     connect(&d->clangdChooser, &Utils::PathChooser::textChanged, this, updateWarningLabel);
     updateWarningLabel();

src/plugins/docker/dockerdevicewidget.cpp

@@ -8,6 +8,7 @@
 #include "dockertr.h"
 
 #include <utils/algorithm.h>
+#include <utils/clangutils.h>
 #include <utils/environment.h>
 #include <utils/hostosinfo.h>
 #include <utils/layoutbuilder.h>
@@ -108,6 +109,10 @@ DockerDeviceWidget::DockerDeviceWidget(const IDevice::Ptr &device)
     m_clangdExecutable->setHistoryCompleter("Docker.ClangdExecutable.History");
     m_clangdExecutable->setAllowPathFromDevice(true);
     m_clangdExecutable->setFilePath(m_data.clangdExecutable);
+    m_clangdExecutable->setValidationFunction(
+        [chooser = m_clangdExecutable](FancyLineEdit *, QString *error) {
+            return Utils::checkClangdVersion(chooser->filePath(), error);
+        });
 
     connect(m_clangdExecutable, &PathChooser::rawPathChanged, this, [this, dockerDevice] {
         m_data.clangdExecutable = m_clangdExecutable->filePath();
@@ -177,7 +182,10 @@ DockerDeviceWidget::DockerDeviceWidget(const IDevice::Ptr &device)
         logView->clear();
         dockerDevice->updateContainerAccess();
 
-        const FilePath clangdPath = dockerDevice->rootPath().withNewPath("clangd").searchInPath();
+        const FilePath clangdPath = dockerDevice->systemEnvironment()
+                                        .searchInPath("clangd", {}, [](const FilePath &clangd) {
+                                            return Utils::checkClangdVersion(clangd);
+                                        });
         if (!clangdPath.isEmpty())
             m_clangdExecutable->setFilePath(clangdPath);