mirror of
https://github.com/mudita/MuditaOS.git
synced 2026-10-27 08:58:31 -04:00
Marcin Smoczyński
486d21af0e
Reduce firmware size by refactoring global data defined in public headers. Each global variable which require runtime initialization adds initialization code to every translation unit which includes the header where the variable is defined and declared.
51 lines
2.0 KiB
C++
51 lines
2.0 KiB
C++
// Copyright (c) 2017-2020, Mudita Sp. z.o.o. All rights reserved.
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// For licensing, see https://github.com/mudita/MuditaOS/LICENSE.md
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#include "CalculatorUtility.hpp"
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#include "application-calculator/widgets/CalculatorStyle.hpp"
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#include <module-utils/tinyexpr/tinyexpr.h>
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#include <module-utils/i18/i18.hpp>
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#include <Utils.hpp>
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#include <cmath>
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Result Calculator::calculate(std::string source)
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{
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source = prepareEquationForParser(source);
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int error;
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double result = te_interp(source.c_str(), &error);
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if (error == 0 && !std::isinf(result) && !std::isnan(result)) {
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auto output = utils::to_string(result);
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if (utils::localize.get("app_calculator_decimal_separator") == style::calculator::symbols::strings::comma) {
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output.replace(output.find(style::calculator::symbols::strings::full_stop),
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std::size(std::string_view(style::calculator::symbols::strings::full_stop)),
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style::calculator::symbols::strings::comma);
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}
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return Result{source, output, false};
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}
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return Result{source, utils::localize.get("app_calculator_error"), true};
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}
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std::string Calculator::prepareEquationForParser(std::string input)
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{
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input = replaceAllOccurrences(
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input, style::calculator::symbols::strings::division, style::calculator::symbols::strings::solidus);
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input = replaceAllOccurrences(
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input, style::calculator::symbols::strings::multiplication, style::calculator::symbols::strings::asterisk);
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input = replaceAllOccurrences(
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input, style::calculator::symbols::strings::comma, style::calculator::symbols::strings::full_stop);
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return input;
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}
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std::string Calculator::replaceAllOccurrences(std::string input, const std::string &from, const std::string &to)
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{
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size_t index = 0;
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while (true) {
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index = input.find(from, index);
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if (index == std::string::npos)
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break;
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input.replace(index, from.length(), to);
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index += to.length();
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}
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return input;
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}
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