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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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/>.
*
*/
#ifndef COMMON_STRING_BIDI_H
#define COMMON_STRING_BIDI_H
#include "common/str.h"
#include "common/ustr.h"
#include "common/language.h"
namespace Common {
/**
* List of paragraph directions
*/
enum BiDiParagraph {
BIDI_PAR_ON = 0,
BIDI_PAR_RTL = 1,
BIDI_PAR_LTR = 2
};
class UnicodeBiDiText {
private:
uint32 *_log_to_vis_index; // from fribidi conversion
uint32 *_vis_to_log_index; // from fribidi conversion
void initWithU32String(const Common::U32String &str);
Common::String bidiByLine(Common::String line, va_list args);
public:
const Common::U32String logical; // original string, ordered logically
Common::U32String visual; // from fribidi conversion, ordered visually
uint32 _pbase_dir;
UnicodeBiDiText(const Common::U32String &str, BiDiParagraph dir = BIDI_PAR_ON);
/* This constructor shouldn't be used outside of unicode-bidi.cpp file */
UnicodeBiDiText(const Common::String &str, const Common::CodePage page, uint32 *pbase_dir);
~UnicodeBiDiText();
/**
* Implicit conversion to U32String to get the visual representation.
*/
operator const U32String &() const { return visual; }
uint32 getVisualPosition(uint32 logicalPos) const;
uint32 getLogicalPosition(uint32 visualPos) const;
uint32 size() const { return logical.size(); }
};
/* just call the constructor for convenience */
UnicodeBiDiText convertBiDiU32String(const U32String &input, BiDiParagraph dir = BIDI_PAR_ON);
String convertBiDiString(const String &input, const Common::Language lang, BiDiParagraph dir = BIDI_PAR_ON);
String convertBiDiString(const String &input, const Common::CodePage page, BiDiParagraph dir = BIDI_PAR_ON);
// calls convertBiDiString for each line in isolation
String convertBiDiStringByLines(const String &input, const Common::CodePage page, BiDiParagraph dir = BIDI_PAR_ON);
} // End of namespace Common
#endif
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