1 files changed, 166 insertions, 0 deletions
diff --git a/svl/source/misc/sharedstring.cxx b/svl/source/misc/sharedstring.cxx
new file mode 100644
index 000000000..9aff3eb0e
--- /dev/null
+++ b/svl/source/misc/sharedstring.cxx
@@ -0,0 +1,166 @@
+/* -*- 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 <svl/sharedstring.hxx>
+
+namespace svl {
+
+SharedString SharedString::getEmptyString()
+{
+    // unicode string array for empty string is globally shared in OUString.
+    // Let's take advantage of that.
+    rtl_uString* pData = nullptr;
+    rtl_uString_new(&pData);
+    return SharedString(pData, pData);
+}
+
+SharedString::SharedString() : mpData(nullptr), mpDataIgnoreCase(nullptr) {}
+
+SharedString::SharedString( rtl_uString* pData, rtl_uString* pDataIgnoreCase ) :
+    mpData(pData), mpDataIgnoreCase(pDataIgnoreCase)
+{
+    if (mpData)
+        rtl_uString_acquire(mpData);
+    if (mpDataIgnoreCase)
+        rtl_uString_acquire(mpDataIgnoreCase);
+}
+
+SharedString::SharedString( const OUString& rStr ) : mpData(rStr.pData), mpDataIgnoreCase(nullptr)
+{
+    rtl_uString_acquire(mpData);
+}
+
+SharedString::SharedString( const SharedString& r ) : mpData(r.mpData), mpDataIgnoreCase(r.mpDataIgnoreCase)
+{
+    if (mpData)
+        rtl_uString_acquire(mpData);
+    if (mpDataIgnoreCase)
+        rtl_uString_acquire(mpDataIgnoreCase);
+}
+
+SharedString::SharedString(SharedString&& r) noexcept : mpData(r.mpData), mpDataIgnoreCase(r.mpDataIgnoreCase)
+{
+    r.mpData = nullptr;
+    r.mpDataIgnoreCase = nullptr;
+}
+
+SharedString::~SharedString()
+{
+    if (mpData)
+        rtl_uString_release(mpData);
+    if (mpDataIgnoreCase)
+        rtl_uString_release(mpDataIgnoreCase);
+}
+
+SharedString& SharedString::operator= ( const SharedString& r )
+{
+    if(this == &r)
+        return *this;
+
+    if (mpData)
+        rtl_uString_release(mpData);
+    if (mpDataIgnoreCase)
+        rtl_uString_release(mpDataIgnoreCase);
+
+    mpData = r.mpData;
+    mpDataIgnoreCase = r.mpDataIgnoreCase;
+
+    if (mpData)
+        rtl_uString_acquire(mpData);
+    if (mpDataIgnoreCase)
+        rtl_uString_acquire(mpDataIgnoreCase);
+
+    return *this;
+}
+
+SharedString& SharedString::operator=(SharedString&& r) noexcept
+{
+    if (mpData)
+        rtl_uString_release(mpData);
+    if (mpDataIgnoreCase)
+        rtl_uString_release(mpDataIgnoreCase);
+
+    mpData = r.mpData;
+    mpDataIgnoreCase = r.mpDataIgnoreCase;
+
+    r.mpData = nullptr;
+    r.mpDataIgnoreCase = nullptr;
+
+    return *this;
+}
+
+bool SharedString::operator== ( const SharedString& r ) const
+{
+    // Compare only the original (not case-folded) string.
+
+    if (mpData == r.mpData)
+        return true;
+
+    if (mpData)
+    {
+        if (!r.mpData)
+            return false;
+
+        if (mpData->length != r.mpData->length)
+            return false;
+
+        return rtl_ustr_reverseCompare_WithLength(mpData->buffer, mpData->length, r.mpData->buffer, r.mpData->length) == 0;
+    }
+
+    return !r.mpData;
+}
+
+bool SharedString::operator!= ( const SharedString& r ) const
+{
+    return !operator== (r);
+}
+
+OUString SharedString::getString() const
+{
+    return mpData ? OUString(mpData) : OUString();
+}
+
+rtl_uString* SharedString::getData()
+{
+    return mpData;
+}
+
+const rtl_uString* SharedString::getData() const
+{
+    return mpData;
+}
+
+rtl_uString* SharedString::getDataIgnoreCase()
+{
+    return mpDataIgnoreCase;
+}
+
+const rtl_uString* SharedString::getDataIgnoreCase() const
+{
+    return mpDataIgnoreCase;
+}
+
+bool SharedString::isValid() const
+{
+    return mpData != nullptr;
+}
+
+bool SharedString::isEmpty() const
+{
+    return mpData == nullptr || mpData->length == 0;
+}
+
+sal_Int32 SharedString::getLength() const
+{
+    return mpData ? mpData->length : 0;
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */