135 lines
4.5 KiB
C++
135 lines
4.5 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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//
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// Copyright 2013 - 2021, Göteborg Bit Factory.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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//
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// https://www.opensource.org/licenses/mit-license.php
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//
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////////////////////////////////////////////////////////////////////////////////
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#include <cmake.h>
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// cmake.h include header must come first
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#include <Context.h>
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#include <Datetime.h>
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#include <Duration.h>
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#include <Eval.h>
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#include <Task.h>
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#include <format.h>
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#include <shared.h>
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#include <stdlib.h>
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#include <string.h>
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#include <iostream>
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#include <string>
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////////////////////////////////////////////////////////////////////////////////
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// Constants.
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bool get(const std::string&, Variant&) {
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/*
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// An example, although a bad one because this is supported by default.
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if (name == "pi") {value = Variant (3.14159165); return true;}
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*/
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return false;
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}
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////////////////////////////////////////////////////////////////////////////////
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int main(int argc, char** argv) {
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int status = 0;
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try {
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Context globalContext;
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Context::setContext(&globalContext);
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// Same operating parameters as Context::staticInitialization.
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Datetime::standaloneDateEnabled = false;
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Datetime::standaloneTimeEnabled = false;
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Duration::standaloneSecondsEnabled = false;
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bool infix{true};
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// Add a source for constants.
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Eval e;
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e.addSource(get);
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// Combine all the arguments into one expression string.
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std::string expression;
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for (int i = 1; i < argc; i++) {
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if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "--help")) {
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std::cout << '\n'
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<< "Usage: " << argv[0] << " [options] '<expression>'\n"
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<< '\n'
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<< "Options:\n"
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<< " -h|--help Display this usage\n"
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<< " -d|--debug Debug mode\n"
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<< " -i|--infix Infix expression (default)\n"
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<< " -p|--postfix Postfix expression\n"
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<< '\n';
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exit(1);
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} else if (!strcmp(argv[i], "-v") || !strcmp(argv[i], "--version")) {
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std::cout << '\n'
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<< format("calc {1} built for ", VERSION) << osName() << '\n'
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<< "Copyright (C) 2006 - 2021 T. Babej, P. Beckingham, F. Hernandez." << '\n'
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<< '\n'
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<< "Taskwarrior may be copied only under the terms of the MIT license, which may "
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"be found in the Taskwarrior source kit."
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<< '\n'
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<< '\n';
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exit(1);
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} else if (!strcmp(argv[i], "-d") || !strcmp(argv[i], "--debug"))
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e.debug(true);
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else if (!strcmp(argv[i], "-i") || !strcmp(argv[i], "--infix"))
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infix = true;
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else if (!strcmp(argv[i], "-p") || !strcmp(argv[i], "--postfix"))
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infix = false;
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else
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expression += std::string(argv[i]) + ' ';
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}
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Variant result;
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if (infix)
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e.evaluateInfixExpression(expression, result);
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else
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e.evaluatePostfixExpression(expression, result);
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// Show any debug output.
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for (const auto& i : Context::getContext().debugMessages) std::cout << i << '\n';
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// Show the result in string form.
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std::cout << (std::string)result << '\n';
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}
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catch (const std::string& error) {
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std::cerr << error << '\n';
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status = -1;
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}
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catch (...) {
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std::cerr << "Unknown error occured. Oops.\n";
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status = -2;
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}
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return status;
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}
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////////////////////////////////////////////////////////////////////////////////
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