162 lines
4.5 KiB
C++
162 lines
4.5 KiB
C++
/*
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Copyright 2015-2016 Amebis
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This file is part of ZRCola.
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ZRCola is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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ZRCola is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with ZRCola. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stdex/idrec.h>
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#include <istream>
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#include <vector>
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///
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/// Public function calling convention
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///
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#ifdef LIBZRCOLA
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#define ZRCOLA_API __declspec(dllexport)
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#else
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#define ZRCOLA_API __declspec(dllimport)
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#endif
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#define ZRCOLA_NOVTABLE __declspec(novtable)
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#pragma warning(push)
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#pragma warning(disable: 4251)
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///
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/// Data records alignment
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///
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#define ZRCOLA_RECORD_ALIGN 1
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///
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/// Database IDs
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///
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#define ZRCOLA_DB_ID ((ZRCola::recordid_t)0x0043525a)
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#define ZRCOLA_DB_TRANSLATIONS_ID ((ZRCola::recordid_t)0x00000001)
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namespace ZRCola {
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typedef unsigned __int32 recordid_t;
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typedef unsigned __int32 recordsize_t;
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///
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/// Translation database
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///
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class translation_db {
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public:
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#pragma pack(push)
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#pragma pack(4)
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///
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/// Translation index
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///
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struct index {
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unsigned __int32 start; ///< Composed character offset
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unsigned __int32 end; ///< Decomposed string end offset
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};
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#pragma pack(pop)
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std::vector<index> comp_index; ///< Composition index
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std::vector<index> decomp_index; ///< Decomposition index
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std::vector<wchar_t> data; ///< Transformation data
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};
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typedef ZRCOLA_API stdex::idrec::record<translation_db, recordid_t, recordsize_t, ZRCOLA_RECORD_ALIGN> translation_rec;
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///
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/// Composed-decomposed index transformation mapping
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///
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class ZRCOLA_NOVTABLE ZRCOLA_API mapping {
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public:
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size_t cmp; ///< Character index in composed string
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size_t decmp; ///< Character index in decomposed string
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inline mapping() {};
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inline mapping(_In_ size_t c, _In_ size_t d) : cmp(c), decmp(d) {}
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};
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///
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/// A vector for composed-decomposed index transformation mapping
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///
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class ZRCOLA_API mapping_vector : public std::vector<mapping> {
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public:
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///
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/// Transforms character index of decomposed to composed string
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///
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/// \param[in] decmp Character index in decomposed string
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///
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/// \returns Character index in composed string
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///
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size_t to_composed(_In_ size_t decmp) const;
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///
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/// Transforms destination index to source index
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///
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/// \param[in] cmp Character index in composed string
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///
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/// \returns Character index in decomposed string
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///
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size_t to_decomposed(_In_ size_t cmp) const;
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};
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};
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#pragma warning(pop)
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const ZRCola::recordid_t stdex::idrec::record<ZRCola::translation_db, ZRCola::recordid_t, ZRCola::recordsize_t, ZRCOLA_RECORD_ALIGN>::id = ZRCOLA_DB_TRANSLATIONS_ID;
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///
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/// Reads translation database from a stream
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///
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/// \param[in] stream Input stream
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/// \param[out] t_db Translation database
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///
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/// \returns The stream \p stream
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///
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inline std::istream& operator >>(std::istream& stream, ZRCola::translation_db &t_db)
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{
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unsigned __int32 count;
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// Read index count.
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stream.read((char*)&count, sizeof(count));
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if (!stream.good()) return stream;
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// Read composition index.
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t_db.comp_index.resize(count);
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stream.read((char*)t_db.comp_index.data(), sizeof(ZRCola::translation_db::index)*count);
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if (!stream.good()) return stream;
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// Read decomposition index.
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t_db.decomp_index.resize(count);
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stream.read((char*)t_db.decomp_index.data(), sizeof(ZRCola::translation_db::index)*count);
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if (!stream.good()) return stream;
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// Read data count.
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stream.read((char*)&count, sizeof(count));
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if (!stream.good()) return stream;
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// Read data.
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t_db.data.resize(count);
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stream.read((char*)t_db.data.data(), sizeof(wchar_t)*count);
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return stream;
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}
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