1 files changed, 137 insertions, 0 deletions
diff --git a/vcl/source/app/UserResourceScanner.cxx b/vcl/source/app/UserResourceScanner.cxx
new file mode 100644
index 000000000000..353004712c44
--- /dev/null
+++ b/vcl/source/app/UserResourceScanner.cxx
@@ -0,0 +1,137 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <vcl/UserResourceScanner.hxx>
+
+#include <sal/config.h>
+#include <sal/log.hxx>
+
+#include <salhelper/linkhelper.hxx>
+#include <unotools/pathoptions.hxx>
+#include <o3tl/string_view.hxx>
+
+#include <deque>
+
+namespace vcl
+{
+namespace
+{
+OUString convertToAbsolutePath(const OUString& path)
+{
+    salhelper::LinkResolver resolver(0);
+    osl::FileBase::RC rc = resolver.fetchFileStatus(path);
+    if (rc != osl::FileBase::E_None)
+    {
+        SAL_WARN("vcl.app", "Could not resolve path '" << path << "' to search for icon themes.");
+        if (rc == osl::FileBase::E_MULTIHOP)
+        {
+            throw std::runtime_error("Provided a recursive symlink to an icon theme directory that "
+                                     "could not be resolved.");
+        }
+    }
+    return resolver.m_aStatus.getFileURL();
+}
+}
+
+namespace file
+{
+// read the status of a file. Returns false if the status could not be determined.
+bool readFileStatus(osl::FileStatus& status, const OUString& file)
+{
+    osl::DirectoryItem dirItem;
+    osl::FileBase::RC retvalGet = osl::DirectoryItem::get(file, dirItem);
+    if (retvalGet != osl::FileBase::E_None)
+    {
+        SAL_WARN("vcl.app", "Could not determine status for file '" << file << "'.");
+        return false;
+    }
+    osl::FileBase::RC retvalStatus = dirItem.getFileStatus(status);
+    if (retvalStatus != osl::FileBase::E_None)
+    {
+        SAL_WARN("vcl.app", "Could not determine status for file '" << file << "'.");
+        return false;
+    }
+    return true;
+}
+
+void splitPathString(std::u16string_view aPathString, std::deque<OUString>& rPaths)
+{
+    sal_Int32 nIndex = 0;
+    do
+    {
+        rPaths.push_front(OUString(o3tl::getToken(aPathString, 0, ';', nIndex)));
+    } while (nIndex >= 0);
+}
+}
+
+UserResourceScanner::UserResourceScanner() = default;
+
+void UserResourceScanner::addPaths(std::u16string_view aPathString)
+{
+    std::deque<OUString> aPaths;
+    vcl::file::splitPathString(aPathString, aPaths);
+
+    for (const auto& path : aPaths)
+    {
+        osl::FileStatus aFileStatus(osl_FileStatus_Mask_Type);
+
+        if (!vcl::file::readFileStatus(aFileStatus, path))
+            continue;
+
+        if (!aFileStatus.isDirectory())
+        {
+            SAL_INFO("vcl.app", "Can not search for resource files in '"
+                                    << path << "'. It is not a directory.");
+            continue;
+        }
+
+        std::vector<OUString> aResourcePaths = readFilesFromPath(path);
+
+        if (aResourcePaths.empty())
+        {
+            SAL_WARN("vcl.app",
+                     "Could not find any file in the provided directory ('" << path << "'.");
+            continue;
+        }
+
+        for (auto const& iconThemePath : aResourcePaths)
+            addResource(iconThemePath);
+    }
+}
+
+std::vector<OUString> UserResourceScanner::readFilesFromPath(const OUString& dir)
+{
+    std::vector<OUString> found;
+    SAL_INFO("vcl", "Scanning directory '" << dir << " for potential resource files.");
+
+    osl::Directory dirToScan(dir);
+    osl::FileBase::RC retvalOpen = dirToScan.open();
+    if (retvalOpen != osl::FileBase::E_None)
+        return found;
+
+    osl::DirectoryItem directoryItem;
+    while (dirToScan.getNextItem(directoryItem) == osl::FileBase::E_None)
+    {
+        osl::FileStatus status(osl_FileStatus_Mask_Type | osl_FileStatus_Mask_FileURL
+                               | osl_FileStatus_Mask_FileName);
+        osl::FileBase::RC retvalStatus = directoryItem.getFileStatus(status);
+        if (retvalStatus != osl::FileBase::E_None)
+            continue;
+
+        OUString filename = convertToAbsolutePath(status.getFileURL());
+        if (isValidResource(filename))
+            found.push_back(filename);
+    }
+
+    return found;
+}
+
+} // end namespace vcl
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */