/* 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 2 * 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * */ #include "common/ustr.h" #include "common/unicode-bidi.h" #include "common/textconsole.h" #ifdef USE_FRIBIDI #include #endif namespace Common { UnicodeBiDiText::UnicodeBiDiText(const Common::U32String &str) : logical(str), _log_to_vis_index(NULL), _vis_to_log_index(NULL) { initWithU32String(str); } UnicodeBiDiText::UnicodeBiDiText(const Common::String &str, const Common::CodePage page) : logical(str), _log_to_vis_index(NULL), _vis_to_log_index(NULL) { initWithU32String(str.decode(page)); } UnicodeBiDiText::~UnicodeBiDiText() { delete[] _log_to_vis_index; delete[] _vis_to_log_index; } uint32 UnicodeBiDiText::getVisualPosition(uint32 logicalPos) const { if (NULL != _log_to_vis_index && logicalPos < size()) { return _log_to_vis_index[logicalPos]; } return logicalPos; } uint32 UnicodeBiDiText::getLogicalPosition(uint32 visualPos) const { if (NULL != _log_to_vis_index && visualPos < size()) { return _vis_to_log_index[visualPos]; } return visualPos; } void UnicodeBiDiText::initWithU32String(const U32String &input) { #ifdef USE_FRIBIDI uint32 input_size = input.size(); uint32 buff_length = (input_size + 2) * 2; // it's more than enough, but it's better to be on the safe side FriBidiChar *visual_str = new FriBidiChar[buff_length * sizeof(FriBidiChar)]; _log_to_vis_index = new uint32[input_size]; _vis_to_log_index = new uint32[input_size]; FriBidiParType pbase_dir = FRIBIDI_PAR_ON; if (!fribidi_log2vis( /* input */ (const FriBidiChar *)input.c_str(), input_size, &pbase_dir, /* output */ visual_str, (FriBidiStrIndex *)_log_to_vis_index, // position_L_to_V_list, (FriBidiStrIndex *)_vis_to_log_index, // position_V_to_L_list, NULL // embedding_level_list )) { warning("initWithU32String: calling fribidi_log2vis failed"); delete[] visual_str; delete[] _log_to_vis_index; delete[] _vis_to_log_index; visual = input; _log_to_vis_index = NULL; _vis_to_log_index = NULL; } else { visual = U32String((uint32 *)visual_str, input.size()); delete[] visual_str; } #else static bool fribidiWarning = true; if (fribidiWarning) { warning("initWithU32String: Fribidi not available, will use input strings as fallback."); fribidiWarning = false; } visual = input; #endif } String convertBiDiString(const String &input, const Common::Language lang) { if (lang != Common::HE_ISR) //TODO: modify when we'll support other RTL languages, such as Arabic and Farsi return input; return Common::convertBiDiString(input, kWindows1255); } String convertBiDiString(const String &input, const Common::CodePage page) { return convertBiDiU32String(input.decode(page)).visual.encode(page); } UnicodeBiDiText convertBiDiU32String(const U32String &input) { return UnicodeBiDiText(input); } } // End of namespace Common