Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 79 insertions, 0 deletions

diff --git a/include/salhelper/linkhelper.hxx b/include/salhelper/linkhelper.hxx
new file mode 100644
index 000000000..aa8da261a
--- /dev/null
+++ b/include/salhelper/linkhelper.hxx
@@ -0,0 +1,79 @@
+/* -*- 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/.
+ */
+
+/*
+ * This file is part of LibreOffice published API.
+ */
+
+#ifndef INCLUDED_SALHELPER_LINKHELPER_HXX
+#define INCLUDED_SALHELPER_LINKHELPER_HXX
+
+#include "rtl/ustring.hxx"
+#include "osl/file.hxx"
+
+namespace salhelper
+{
+    class SAL_WARN_UNUSED LinkResolver
+    {
+    public:
+        osl::FileStatus m_aStatus;
+
+        LinkResolver(sal_uInt32 nMask)
+            : m_aStatus(nMask |
+                        osl_FileStatus_Mask_FileURL |
+                        osl_FileStatus_Mask_Type |
+                        osl_FileStatus_Mask_LinkTargetURL)
+        {
+        }
+
+        /** Resolve a file url if it's a symbolic link, to a maximum depth of
+         *  nDepth and fill in m_aStatus with the requested ctor flags
+         *
+         *  @return osl::FileBase::E_None on success
+         *
+         *  @see DirectoryItem::getFileStatus
+         */
+        osl::FileBase::RC fetchFileStatus(const rtl::OUString &rURL,
+            int nDepth = 128)
+        {
+            //In an ideal world this wouldn't be inline, but I want to use this
+            //in jvmfwk hence salhelper, but salhelper is .map controlled and
+            //getting all the mangled names right is a misery, moving it over
+            //to visibility markup would drop per-symbol versioning
+            osl::FileBase::RC eReturn;
+
+            osl::DirectoryItem item;
+            rtl::OUString sURL(rURL);
+            while ((eReturn = osl::DirectoryItem::get(sURL, item))
+                  == osl::File::E_None)
+            {
+                if (--nDepth == 0)
+                {
+                    eReturn = osl::FileBase::E_MULTIHOP;
+                    break;
+                }
+                eReturn = item.getFileStatus(m_aStatus);
+                if (eReturn != osl::File::E_None)
+                    break;
+                if (m_aStatus.getFileType() != osl::FileStatus::Link)
+                {
+                    eReturn = osl::FileBase::E_None;
+                    break;
+                }
+                sURL = m_aStatus.getLinkTargetURL();
+            }
+
+            return eReturn;
+        }
+    };
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */