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1 /** |
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2 * Relational pipes |
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3 * Copyright © 2019 František Kučera (Frantovo.cz, GlobalCode.info) |
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4 * |
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5 * This program is free software: you can redistribute it and/or modify |
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6 * it under the terms of the GNU General Public License as published by |
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7 * the Free Software Foundation, either version 3 of the License, or |
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8 * (at your option) any later version. |
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9 * |
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10 * This program is distributed in the hope that it will be useful, |
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 * GNU General Public License for more details. |
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14 * |
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15 * You should have received a copy of the GNU General Public License |
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16 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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17 */ |
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18 #pragma once |
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19 |
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20 #include <vector> |
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21 |
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22 #include <relpipe/writer/typedefs.h> |
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23 #include <relpipe/cli/CLI.h> |
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24 #include <relpipe/cli/RelpipeCLIException.h> |
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25 |
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26 #include "Configuration.h" |
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27 |
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28 namespace relpipe { |
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29 namespace tr { |
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30 namespace awk { |
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31 |
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32 class CLIParser { |
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33 private: |
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34 |
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35 // FIXME: move common methods/classes to relpipe-lib-cli or relpipe-lib-helper |
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36 |
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37 string_t readNext(std::vector<string_t> arguments, int& i) { |
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38 if (i < arguments.size()) return arguments[i++]; |
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39 else throw relpipe::cli::RelpipeCLIException(L"Missing CLI argument" + (i > 0 ? (L" after " + arguments[i - 1]) : L""), relpipe::cli::CLI::EXIT_CODE_BAD_CLI_ARGUMENTS); |
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40 } |
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41 |
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42 public: |
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43 |
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44 static const string_t OPTION_EXPRESSION; |
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45 |
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46 Configuration parse(const std::vector<string_t>& arguments) { |
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47 Configuration c; |
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48 |
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49 for (int i = 0; i < arguments.size();) { |
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50 string_t option = readNext(arguments, i); |
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51 if (option == OPTION_EXPRESSION) c.awkExpression = readNext(arguments, i); |
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52 else throw relpipe::cli::RelpipeCLIException(L"Unsupported CLI option: " + option, relpipe::cli::CLI::EXIT_CODE_BAD_CLI_ARGUMENTS); |
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53 } |
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54 |
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55 return c; |
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56 } |
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57 |
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58 virtual ~CLIParser() { |
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59 } |
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60 }; |
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61 |
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62 const string_t CLIParser::OPTION_EXPRESSION = L"--expression"; |
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63 |
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64 } |
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65 } |
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66 } |