Merge pull request #42 from QuasarApp/platformutils

added support snap platform

qaplatformutils.h

@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2024-2024 QuasarApp.
+ * Distributed under the lgplv3 software license, see the accompanying
+ * Everyone is permitted to copy and distribute verbatim copies
+ * of this license document, but changing it is not allowed.
+*/
+
+
+#ifndef PLATFORMUTILS_H
+#define PLATFORMUTILS_H
+
+#include <QString>
+#include "quasarapp_global.h"
+
+namespace QuasarAppUtils {
+
+/**
+ * @brief The iPlatformUtils class bas interface for get access platform dependet functions and constants.
+ */
+class QUASARAPPSHARED_EXPORT PlatformUtils
+{
+public:
+    PlatformUtils();
+
+    /**
+     * @brief isSnap This method check destribution type. true if the application packed as a snap.
+     * @return true if the application packaged as a snap else false.
+     */
+    static bool isSnap();
+
+    /**
+     * @brief snapRootFS returns root file system of main OS (available read only)
+     * @return path ro main os root.
+     */
+    static QString snapRootFS();
+
+    /**
+     * @brief transportPathToSnapRoot change path to snap avaialble.
+     * @param path source path of main OS.
+     * @return readable path location for snap pacakge.
+     * @note this method is not a fast, so not invoke it too offten.
+     */
+    static QString transportPathToSnapRoot(const QString &path);
+
+    /**
+     * @brief checkSystemBakupSnapInterface This method check access to bakcup permision of snap pacakge.
+     *  This permision required to get access to rootfs of main OS.
+     * @return true if the app have this accesss.
+     */
+    static bool checkSystemBakupSnapInterface();
+};
+}
+#endif // IPLATFORMUTILS_H

qaplatformutils_linux.cpp

@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2024-2024 QuasarApp.
+ * Distributed under the lgplv3 software license, see the accompanying
+ * Everyone is permitted to copy and distribute verbatim copies
+ * of this license document, but changing it is not allowed.
+*/
+
+#include "qaplatformutils.h"
+
+#if defined(Q_OS_LINUX)
+#include <QDir>
+#include <QFileInfo>
+#include <QProcessEnvironment>
+#elif defined(Q_OS_ANDROID)
+#elif defined(Q_OS_WIN32)
+#elif defined(Q_OS_MACOS)
+#elif defined(Q_OS_IOS)
+#endif
+
+namespace QuasarAppUtils {
+
+#if  defined(Q_OS_LINUX)
+bool PlatformUtils::isSnap() {
+    return QProcessEnvironment::systemEnvironment().value("SNAP").size();
+}
+
+QString PlatformUtils::snapRootFS() {
+    return "/var/lib/snapd/hostfs";
+}
+
+QString PlatformUtils::transportPathToSnapRoot(const QString &path) {
+    if (isSnap() && checkSystemBakupSnapInterface()) {
+
+        if(QFileInfo(path).isWritable()) {
+            return path;
+        }
+
+        if (path.size() && path[0] != QString("/")) {
+            auto absalutPath = QProcessEnvironment::systemEnvironment().value("PWD") + "/" + path;
+            if (!absalutPath.contains(snapRootFS())) {
+                return snapRootFS() + "/" + absalutPath;
+            }
+        }
+
+        if (!path.contains(snapRootFS())) {
+            return snapRootFS() + "/" + path;
+        }
+    }
+
+    return path;
+}
+
+bool PlatformUtils::checkSystemBakupSnapInterface() {
+    return QDir(snapRootFS()).entryList(QDir::AllEntries | QDir::NoDotAndDotDot).size();
+}
+
+#elif defined(Q_OS_ANDROID)
+
+bool PlatformUtils::isSnap() { return false;}
+
+QString PlatformUtils::snapRootFS() { return "";}
+
+QString PlatformUtils::transportPathToSnapRoot(const QString &path) { return path; }
+
+bool PlatformUtils::checkSystemBakupSnapInterface() { return false; }
+
+#elif defined(Q_OS_WIN32)
+
+bool PlatformUtils::isSnap() { return false;}
+
+QString PlatformUtils::snapRootFS() { return "";}
+
+QString PlatformUtils::transportPathToSnapRoot(const QString &path) { return path; }
+
+bool PlatformUtils::checkSystemBakupSnapInterface() { return false; }
+
+#elif defined(Q_OS_MACOS)
+
+bool PlatformUtils::isSnap() { return false;}
+
+QString PlatformUtils::snapRootFS() { return "";}
+
+QString PlatformUtils::transportPathToSnapRoot(const QString &path) { return path; }
+
+bool PlatformUtils::checkSystemBakupSnapInterface() { return false; }
+
+#elif defined(Q_OS_IOS)
+
+bool PlatformUtils::isSnap() { return false;}
+
+QString PlatformUtils::snapRootFS() { return "";}
+
+QString PlatformUtils::transportPathToSnapRoot(const QString &path) { return path; }
+
+bool PlatformUtils::checkSystemBakupSnapInterface() { return false; }
+
+#endif
+
+}

quasarapp.h

@@ -11,6 +11,7 @@
 #include "params.h"
 #include "locales.h"
 #include "settings.h"
+#include "qaplatformutils.h"
 
 /**
  * @brief The QuasaraAppUtils class