1 files changed, 65 insertions, 0 deletions
diff --git a/include/svl/sharedstringpool.hxx b/include/svl/sharedstringpool.hxx
new file mode 100644
index 000000000..6880fec2a
--- /dev/null
+++ b/include/svl/sharedstringpool.hxx
@@ -0,0 +1,65 @@
+/* -*- 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/.
+ */
+
+#ifndef INCLUDED_SVL_SHAREDSTRINGPOOL_HXX
+#define INCLUDED_SVL_SHAREDSTRINGPOOL_HXX
+
+#include <svl/svldllapi.h>
+#include <rtl/ustring.hxx>
+#include <memory>
+
+class CharClass;
+
+namespace svl
+{
+class SharedString;
+
+/**
+ * Storage for pool of shared strings.  It also provides mapping from
+ * original-cased strings to upper-cased strings for case insensitive
+ * operations.
+ */
+class SVL_DLLPUBLIC SharedStringPool
+{
+    struct Impl;
+    std::unique_ptr<Impl> mpImpl;
+
+    SharedStringPool(const SharedStringPool&) = delete;
+    SharedStringPool& operator=(const SharedStringPool&) = delete;
+
+public:
+    SharedStringPool(const CharClass& rCharClass);
+    ~SharedStringPool();
+
+    /**
+     * Intern a string object into the shared string pool.
+     *
+     * @param rStr string object to intern.
+     *
+     * @return a pointer to the string object stored inside the pool, or NULL
+     *         if the insertion fails.
+     */
+    SharedString intern(const OUString& rStr);
+
+    /**
+     * Go through all string objects in the pool, and clear those that are no
+     * longer used outside of the pool.
+     */
+    void purge();
+
+    // For unit tests. Note that an "empty" pool may contain some internal items,
+    // such as SharedString::getEmptyString().
+    size_t getCount() const;
+    size_t getCountIgnoreCase() const;
+};
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */