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+#ifndef TMWA_STRINGS_PAIR_HPP
+#define TMWA_STRINGS_PAIR_HPP
+// strings/pair.hpp - Internal contiguous range.
+//
+// Copyright © 2013 Ben Longbons <b.r.longbons@gmail.com>
+//
+// This file is part of The Mana World (Athena server)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+#include "../common/sanity.hpp"
+
+#include <cstring>
+
+#include "fwd.hpp"
+
+namespace strings
+{
+ // TODO instead typedef ranges::Contiguous<const char>
+ // or whatever it becomes once it exists.
+ // const_array is just a hack, as evidenced by the fact
+ // that it's not really const.
+ class XPair
+ {
+ const char *_begin;
+ const char *_end;
+ public:
+ typedef XString TailSlice;
+ typedef XString FullSlice;
+
+ XPair(const char *b, const char *e)
+ : _begin(b), _end(e)
+ {}
+ template<size_t n>
+ XPair(char (&arr)[n]) = delete;
+ template<size_t n>
+ XPair(const char (&arr)[n])
+ : _begin(arr), _end(arr + strlen(arr))
+ {}
+
+ const char *begin() const { return _begin; }
+ const char *end() const { return _end; }
+ size_t size() { return end() - begin(); }
+ };
+ struct ZPair : XPair
+ {
+ typedef ZString TailSlice;
+ typedef XString FullSlice;
+
+ ZPair(const char *b, const char *e)
+ : XPair(b, e)
+ {}
+ template<size_t n>
+ ZPair(char (&arr)[n]) = delete;
+ template<size_t n>
+ ZPair(const char (&arr)[n])
+ : XPair(arr)
+ {}
+ };
+} // namespace strings
+
+#endif // TMWA_STRINGS_PAIR_HPP