Utils: Introduce FilePath::fileSize()

And implement it locally and for docker.

Change-Id: I362f4cae95560836d9300473a286429eb4569329
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/libs/utils/filepath.cpp

@@ -1279,6 +1279,15 @@ bool FilePath::renameFile(const FilePath &target) const
     return QFile::rename(path(), target.path());
 }
 
+qint64 FilePath::fileSize() const
+{
+    if (needsDevice()) {
+        QTC_ASSERT(s_deviceHooks.fileSize, return false);
+        return s_deviceHooks.fileSize(*this);
+    }
+    return QFileInfo(m_data).size();
+}
+
 QTextStream &operator<<(QTextStream &s, const FilePath &fn)
 {
     return s << fn.toString();

src/libs/utils/filepath.h

@@ -139,6 +139,7 @@ public:
     bool removeRecursively(QString *error = nullptr) const;
     bool copyFile(const FilePath &target) const;
     bool renameFile(const FilePath &target) const;
+    qint64 fileSize() const;
 
     Qt::CaseSensitivity caseSensitivity() const;
 

src/libs/utils/fileutils.h

@@ -86,6 +86,7 @@ public:
     std::function<QFile::Permissions(const FilePath &)> permissions;
     std::function<OsType(const FilePath &)> osType;
     std::function<Environment(const FilePath &)> environment;
+    std::function<qint64(const FilePath &)> fileSize;
 };
 
 class QTCREATOR_UTILS_EXPORT FileUtils {

src/plugins/docker/dockerdevice.cpp

@@ -1275,6 +1275,20 @@ FilePath DockerDevice::symLinkTarget(const FilePath &filePath) const
     return output.isEmpty() ? FilePath() : filePath.withNewPath(output);
 }
 
+qint64 DockerDevice::fileSize(const FilePath &filePath) const
+{
+    QTC_ASSERT(handlesFile(filePath), return -1);
+    tryCreateLocalFileAccess();
+    if (hasLocalFileAccess()) {
+        const FilePath localAccess = mapToLocalAccess(filePath);
+        LOG("File size? " << filePath.toUserOutput() << localAccess.toUserOutput() << localAccess.fileSize());
+        return localAccess.fileSize();
+    }
+
+    const QString output = d->outputForRunInShell({"stat", {"-c", "%s", filePath.path()}});
+    return output.toLongLong();
+}
+
 static FilePaths filterEntriesHelper(const FilePath &base,
                                      const QStringList &entries,
                                      const QStringList &nameFilters,

src/plugins/docker/dockerdevice.h

@@ -99,6 +99,7 @@ public:
     bool writeFileContents(const Utils::FilePath &filePath, const QByteArray &data) const override;
     QDateTime lastModified(const Utils::FilePath &filePath) const override;
     void runProcess(Utils::QtcProcess &process) const override;
+    qint64 fileSize(const Utils::FilePath &filePath) const override;
 
     Utils::Environment systemEnvironment() const override;
 

src/plugins/projectexplorer/devicesupport/desktopdevice.cpp

@@ -190,6 +190,12 @@ QList<FilePath> DesktopDevice::directoryEntries(const FilePath &filePath,
     return Utils::transform(entryInfoList, &FilePath::fromFileInfo);
 }
 
+qint64 DesktopDevice::fileSize(const FilePath &filePath) const
+{
+    QTC_ASSERT(handlesFile(filePath), return -1);
+    return filePath.fileSize();
+}
+
 Environment DesktopDevice::systemEnvironment() const
 {
     return Environment::systemEnvironment();

src/plugins/projectexplorer/devicesupport/desktopdevice.h

@@ -79,6 +79,7 @@ public:
     Utils::FilePath symLinkTarget(const Utils::FilePath &filePath) const override;
     QByteArray fileContents(const Utils::FilePath &filePath, qint64 limit, qint64 offset) const override;
     bool writeFileContents(const Utils::FilePath &filePath, const QByteArray &data) const override;
+    qint64 fileSize(const Utils::FilePath &filePath) const override;
 
 protected:
     DesktopDevice();

src/plugins/projectexplorer/devicesupport/devicemanager.cpp

@@ -525,6 +525,12 @@ DeviceManager::DeviceManager(bool isInstance) : d(std::make_unique<DeviceManager
         return device->systemEnvironment();
     };
 
+    deviceHooks.fileSize = [](const FilePath &filePath) {
+        auto device = DeviceManager::deviceForPath(filePath);
+        QTC_ASSERT(device, return qint64(-1));
+        return device->fileSize(filePath);
+    };
+
     FileUtils::setDeviceFileHooks(deviceHooks);
 
     DeviceProcessHooks processHooks;

src/plugins/projectexplorer/devicesupport/idevice.cpp

@@ -409,6 +409,12 @@ Environment IDevice::systemEnvironment() const
     return Environment::systemEnvironment();
 }
 
+qint64 IDevice::fileSize(const FilePath &filePath) const
+{
+    QTC_CHECK(false);
+    return -1;
+}
+
 IDevice::~IDevice() = default;
 
 /*!

src/plugins/projectexplorer/devicesupport/idevice.h

@@ -267,6 +267,7 @@ public:
     virtual QFile::Permissions permissions(const Utils::FilePath &filePath) const;
     virtual void runProcess(Utils::QtcProcess &process) const;
     virtual Utils::Environment systemEnvironment() const;
+    virtual qint64 fileSize(const Utils::FilePath &filePath) const;
 
     virtual void aboutToBeRemoved() const {}