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68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
/*
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* LocaleHelper.h - compatibility functions for handling decimal separators
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* Providing helper functions which handle both periods and commas
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* for decimal separators to load old projects correctly
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*
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* Copyright (c) 2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
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* Copyright (c) 2018 Hyunjin Song <tteu.ingog/at/gmail.com>
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*
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* This file is part of LMMS - https://lmms.io
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (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 GNU
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* 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
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef LOCALEHELPER_H
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#define LOCALEHELPER_H
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#include <QLocale>
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#include <limits>
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#include <cmath>
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namespace LocaleHelper
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{
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inline double toDouble(QString str, bool* ok = nullptr)
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{
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bool isOkay;
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double value;
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QLocale c(QLocale::C);
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c.setNumberOptions(QLocale::RejectGroupSeparator);
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value = c.toDouble(str, &isOkay);
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if (!isOkay)
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{
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QLocale german(QLocale::German);
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german.setNumberOptions(QLocale::RejectGroupSeparator);
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value = german.toDouble(str, &isOkay);
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}
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if (ok != nullptr) {*ok = isOkay;}
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return value;
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}
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inline float toFloat(QString str, bool* ok = nullptr)
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{
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double d = toDouble(str, ok);
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if (!std::isinf(d) && std::fabs(d) > std::numeric_limits<float>::max())
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{
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if (ok != nullptr) {*ok = false;}
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return 0.0f;
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}
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return static_cast<float>(d);
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}
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}
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#endif // LOCALEHELPER_H
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