131 lines
5.1 KiB
C++
131 lines
5.1 KiB
C++
// Copyright 2022, FOSS-VG Developers and Contributers
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//
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// Author(s):
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// BodgeMaster
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//
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// This program is free software: you can redistribute it and/or modify it
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// under the terms of the GNU Affero General Public License as published
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// by the Free Software Foundation, version 3.
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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
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// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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// See the GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// version 3 along with this program.
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// If not, see https://www.gnu.org/licenses/agpl-3.0.en.html
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#include <bitset>
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#include <cstdint>
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#include <iostream>
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#include <vector>
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#include "../lib/cli.hpp"
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#define EXIT_SUCCESS 0
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#define EXIT_RUNTIME 1
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#define EXIT_USAGE 2
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int main(int argc, char* argv[]) {
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std::vector<CLI::Flag> flags;
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flags.push_back(CLI::Flag('x', "hexadecimal", "base 16"));
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flags.push_back(CLI::Flag('o', "octal", "base 8"));
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flags.push_back(CLI::Flag('b', "binary", "base 2"));
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flags.push_back(CLI::Flag('d', "decimal", "base 10"));
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flags.push_back(CLI::Flag('h', "help", "print help and exit"));
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flags.push_back(CLI::Flag('l', "license", "print license information and exit"));
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std::vector<CLI::Option> options;
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std::vector<CLI::Argument> arguments;
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arguments.push_back(CLI::Argument("NUMBER", "the number to convert"));
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CLI::ArgumentsParser cliParser = CLI::ArgumentsParser(argc, argv, flags, options, arguments, "Convert numbers between predefined bases", "This only works for unsigned numbers.\n\tBaseConvert understands the prefixes 0x, 0b, 0o, and 0 in input numbers.");
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if (cliParser.getFlag("help").value) {
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std::cout << cliParser.getUsage() << std::endl;
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return EXIT_SUCCESS;
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}
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if (cliParser.getFlag("license").value){
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std::cout
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<< "Copyright 2022, FOSS-VG Developers and Contributers\n"
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<< "\n"
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<< "BaseConvert is part of the FOSS-VG development tool suite.\n"
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<< "\n"
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<< "This program is free software: you can redistribute it and/or modify it\n"
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<< "under the terms of the GNU Affero General Public License as published\n"
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<< "by the Free Software Foundation, version 3.\n"
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<< "\n"
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<< "This program is distributed in the hope that it will be useful,\n"
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<< "but WITHOUT ANY WARRANTY; without even the implied\n"
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<< "warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n"
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<< "See the GNU Affero General Public License for more details.\n"
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<< "\n"
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<< "You should have received a copy of the GNU Affero General Public License\n"
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<< "version 3 along with this program.\n"
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<< "If not, see https://www.gnu.org/licenses/agpl-3.0.en.html"
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<< std::endl;
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return EXIT_SUCCESS;
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}
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if (cliParser.wrongUsage) {
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std::cout << cliParser.getUsage() << std::endl;
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return EXIT_USAGE;
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}
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std::string numberString = cliParser.getArgument(0).value;
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uint8_t base = 10;
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uint64_t* number = new uint64_t;
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if (numberString == "") {
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std::cerr << "Empty string is not a valid number." << std::endl;
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return EXIT_RUNTIME;
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}
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if (numberString[0] == '0') {
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if (numberString.substr(0, 2)=="0x" || numberString.substr(0, 2)=="0X") {
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base = 16;
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numberString = numberString.substr(2, numberString.length()-2);
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} else if (numberString.substr(0, 2)=="0b" || numberString.substr(0, 2)=="0B") {
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base = 2;
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numberString = numberString.substr(2, numberString.length()-2);
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} else if (numberString.substr(0, 2)=="0o" || numberString.substr(0, 2)=="0O") {
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base = 8;
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numberString = numberString.substr(2, numberString.length()-2);
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} else {
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base = 8;
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}
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}
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*number = std::stoull(numberString, nullptr, base);
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if (cliParser.getFlag("hexadecimal").value) {
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std::cout << "0x" << std::hex << *number << std::endl;
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} else if (cliParser.getFlag("octal").value) {
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*number==0? std::cout << "0" << std::endl : std::cout << "0" << std::oct << *number << std::endl;
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} else if (cliParser.getFlag("binary").value) {
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std::bitset<64> bitset = std::bitset<64>(*number);
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bool foundFirstBit = false;
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std::cout << "0b";
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for (uint8_t i=0; i<64; i++) {
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if (bitset[63-i]) {
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std::cout << "1";
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foundFirstBit = true;
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} else if (foundFirstBit) {
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std::cout << "0";
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}
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}
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if (!foundFirstBit) {
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std::cout << "0";
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}
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std::cout << std::endl;
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} else if (cliParser.getFlag("decimal").value) {
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std::cout << *number << std::endl;
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} else {
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std::cout << cliParser.getUsage() << std::endl;
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return EXIT_USAGE;
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}
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delete number;
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return EXIT_SUCCESS;
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}
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