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https://github.com/libretro/scummvm.git
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77 lines
2.7 KiB
C++
77 lines
2.7 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it 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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*
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* This program is distributed in the hope that it will be useful,
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* but 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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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef COMMON_STRING_BIDI_H
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#define COMMON_STRING_BIDI_H
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#include "common/str.h"
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#include "common/ustr.h"
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#include "common/language.h"
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namespace Common {
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/**
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* List of paragraph directions
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*/
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enum BiDiParagraph {
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BIDI_PAR_ON = 0,
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BIDI_PAR_RTL = 1,
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BIDI_PAR_LTR = 2
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};
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class UnicodeBiDiText {
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private:
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uint32 *_log_to_vis_index; // from fribidi conversion
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uint32 *_vis_to_log_index; // from fribidi conversion
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void initWithU32String(const Common::U32String &str);
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Common::String bidiByLine(Common::String line, va_list args);
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public:
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const Common::U32String logical; // original string, ordered logically
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Common::U32String visual; // from fribidi conversion, ordered visually
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uint32 _pbase_dir;
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UnicodeBiDiText(const Common::U32String &str, BiDiParagraph dir = BIDI_PAR_ON);
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/* This constructor shouldn't be used outside of unicode-bidi.cpp file */
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UnicodeBiDiText(const Common::String &str, const Common::CodePage page, uint32 *pbase_dir);
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~UnicodeBiDiText();
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/**
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* Implicit conversion to U32String to get the visual representation.
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*/
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operator const U32String &() const { return visual; }
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uint32 getVisualPosition(uint32 logicalPos) const;
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uint32 getLogicalPosition(uint32 visualPos) const;
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uint32 size() const { return logical.size(); }
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};
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/* just call the constructor for convenience */
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UnicodeBiDiText convertBiDiU32String(const U32String &input, BiDiParagraph dir = BIDI_PAR_ON);
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String convertBiDiString(const String &input, const Common::Language lang, BiDiParagraph dir = BIDI_PAR_ON);
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String convertBiDiString(const String &input, const Common::CodePage page, BiDiParagraph dir = BIDI_PAR_ON);
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// calls convertBiDiString for each line in isolation
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String convertBiDiStringByLines(const String &input, const Common::CodePage page, BiDiParagraph dir = BIDI_PAR_ON);
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} // End of namespace Common
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#endif
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