Revert "FolderWatcher: Act on relative paths #5116 (#5153)"

This is not sufficient as it is not working for the Socket API.
Next commit will fix it in another layer.

Also, not ignoring paths that are not inside the folder is wrong
as it might still happen if the name has a different casing

This reverts commit d5a481f132.

(cherry picked from commit 904cd46f75)

src/gui/folder.cpp

@@ -628,6 +628,11 @@ void Folder::removeFromSettings() const
     settings->remove(FolderMan::escapeAlias(_definition.alias));
 }
 
+bool Folder::isFileExcludedAbsolute(const QString& fullPath) const
+{
+    return _engine->excludedFiles().isExcluded(fullPath, path(), _definition.ignoreHiddenFiles);
+}
+
 bool Folder::isFileExcludedRelative(const QString& relativePath) const
 {
     return _engine->excludedFiles().isExcluded(path() + relativePath, path(), _definition.ignoreHiddenFiles);

src/gui/folder.h

@@ -183,6 +183,11 @@ public:
      /// Removes the folder from the account's settings.
      void removeFromSettings() const;
 
+     /**
+      * Returns whether a file inside this folder should be excluded.
+      */
+     bool isFileExcludedAbsolute(const QString& fullPath) const;
+
      /**
       * Returns whether a file inside this folder should be excluded.
       */

src/gui/folderwatcher.cpp

@@ -41,9 +41,7 @@ FolderWatcher::FolderWatcher(const QString &root, Folder* folder)
     : QObject(folder),
       _folder(folder)
 {
-    _canonicalFolderPath = QFileInfo(root).canonicalFilePath();
-
-    _d.reset(new FolderWatcherPrivate(this, _canonicalFolderPath));
+    _d.reset(new FolderWatcherPrivate(this, root));
 
     _timer.start();
 }
@@ -57,17 +55,10 @@ bool FolderWatcher::pathIsIgnored( const QString& path )
     if( !_folder ) return false;
 
 #ifndef OWNCLOUD_TEST
-    QString relPath = path;
-    if (relPath.startsWith(_canonicalFolderPath)) {
-        relPath = relPath.remove(0, _canonicalFolderPath.length()+1);
-        if (_folder->isFileExcludedRelative(relPath)) {
-            qDebug() << "* Ignoring file" << relPath << "in" << _canonicalFolderPath;
-            return true;
-        }
+    if (_folder->isFileExcludedAbsolute(path)) {
+        qDebug() << "* Ignoring file" << path;
+        return true;
     }
-    // there could be an odd watch event not being inside the _canonicalFolderPath
-    // We will just not ignore it then, who knows.
-
 #endif
     return false;
 }

src/gui/folderwatcher.h

@@ -89,7 +89,6 @@ private:
     QTime _timer;
     QSet<QString> _lastPaths;
     Folder* _folder;
-    QString _canonicalFolderPath;
 
     friend class FolderWatcherPrivate;
 };