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+/**
+ * Copyright (c) 2018, Timothy Stack
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * * Neither the name of Timothy Stack nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * @file unique_path.hh
+ */
+
+#ifndef LNAV_UNIQUE_PATH_HH
+#define LNAV_UNIQUE_PATH_HH
+
+#include <map>
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "ghc/filesystem.hpp"
+
+/**
+ * A source of a path for the unique_path_generator.
+ */
+class unique_path_source {
+public:
+    virtual ~unique_path_source() = default;
+
+    void set_unique_path(const std::string& path)
+    {
+        this->ups_unique_path = path;
+    }
+
+    const std::string& get_unique_path() const { return this->ups_unique_path; }
+
+    virtual ghc::filesystem::path get_path() const = 0;
+
+    ghc::filesystem::path& get_path_prefix()
+    {
+        return this->ups_prefix;
+    }
+
+    void set_path_prefix(const ghc::filesystem::path& prefix)
+    {
+        this->ups_prefix = prefix;
+    }
+
+private:
+    ghc::filesystem::path ups_prefix;
+    std::string ups_unique_path;
+};
+
+/**
+ * Given a collection of filesystem paths, this class will generate a shortened
+ * and unique path for each of the given paths.
+ */
+class unique_path_generator {
+public:
+    void add_source(const std::shared_ptr<unique_path_source>& path_source);
+
+    void generate();
+
+    std::map<std::string, std::vector<std::shared_ptr<unique_path_source>>>
+        upg_unique_paths;
+    size_t upg_max_len{0};
+};
+
+#endif  // LNAV_UNIQUE_PATH_HH