| Directory: | ./ |
|---|---|
| File: | Tools/simple_cmd.hpp |
| Date: | 2024-04-14 07:32:34 |
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| Lines: | 25 | 25 | 100.0% |
| Branches: | 27 | 62 | 43.5% |
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| 1 | // ______ ______ _ _ _____ ______ | ||
| 2 | // | ____| ____| | (_)/ ____| | ____| | ||
| 3 | // | |__ | |__ | | _| (___ ___| |__ | ||
| 4 | // | __| | __| | | | |\___ \ / __| __| | ||
| 5 | // | | | |____| |____| |____) | (__| |____ | ||
| 6 | // |_| |______|______|_|_____/ \___|______| | ||
| 7 | // Finite Elements for Life Sciences and Engineering | ||
| 8 | // | ||
| 9 | // License: LGL2.1 License | ||
| 10 | // FELiScE default license: LICENSE in root folder | ||
| 11 | // | ||
| 12 | // Main authors: Vicente Mataix Ferrandiz | ||
| 13 | // | ||
| 14 | |||
| 15 | #ifndef _SIMPLE_CMD_HPP | ||
| 16 | #define _SIMPLE_CMD_HPP | ||
| 17 | |||
| 18 | // System includes | ||
| 19 | #include <functional> // std::function | ||
| 20 | #include <iostream> // std::cout, std::endl | ||
| 21 | #include <map> // std::map | ||
| 22 | #include <memory> // std::unique_ptr | ||
| 23 | #include <string> // std::string | ||
| 24 | #include <sstream> // std::stringstream | ||
| 25 | #include <string_view> // std::string_view | ||
| 26 | #include <variant> // std::variant | ||
| 27 | #include <vector> // std::vector | ||
| 28 | |||
| 29 | // External includes | ||
| 30 | |||
| 31 | // Project includes | ||
| 32 | |||
| 33 | /** | ||
| 34 | * @brief This class provides a simplified CMD interface | ||
| 35 | * @author Vicente Mataix Ferrandiz | ||
| 36 | */ | ||
| 37 | template <class Opts> | ||
| 38 | struct CmdOptions : Opts | ||
| 39 | { | ||
| 40 | using Property = std::variant<std::string Opts::*, int Opts::*, double Opts::*, bool Opts::*>; | ||
| 41 | using Argument = std::pair<std::string, Property>; | ||
| 42 | |||
| 43 | 4 | ~CmdOptions() = default; | |
| 44 | |||
| 45 | 4 | Opts parse(int argc, const char* argv[]) | |
| 46 | { | ||
| 47 |
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4 | std::vector<std::string_view> vargv(argv, argv+argc); |
| 48 |
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18 | for (int idx = 0; idx < argc; ++idx) |
| 49 |
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52 | for (auto& cbk : callbacks) |
| 50 |
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38 | cbk.second(idx, vargv); |
| 51 | |||
| 52 |
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8 | return static_cast<Opts>(*this); |
| 53 | 4 | } | |
| 54 | |||
| 55 | 4 | static std::unique_ptr<CmdOptions> Create(std::initializer_list<Argument> args) | |
| 56 | { | ||
| 57 |
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4 | auto cmdOpts = std::unique_ptr<CmdOptions>(new CmdOptions()); |
| 58 |
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14 | for (auto arg : args) cmdOpts->register_callback(arg); |
| 59 | 4 | return cmdOpts; | |
| 60 | } | ||
| 61 | |||
| 62 | private: | ||
| 63 | using callback_t = std::function<void(int, const std::vector<std::string_view>&)>; | ||
| 64 | std::map<std::string, callback_t> callbacks; | ||
| 65 | |||
| 66 | 4 | CmdOptions() = default; | |
| 67 | CmdOptions(const CmdOptions&) = delete; | ||
| 68 | CmdOptions(CmdOptions&&) = delete; | ||
| 69 | CmdOptions& operator=(const CmdOptions&) = delete; | ||
| 70 | CmdOptions& operator=(CmdOptions&&) = delete; | ||
| 71 | |||
| 72 | 10 | auto register_callback(std::string name, Property prop) | |
| 73 | { | ||
| 74 |
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48 | callbacks[name] = [this, name, prop](int idx, const std::vector<std::string_view>& argv) { |
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38 | if (argv[idx] == name) { |
| 76 | 5 | visit( | |
| 77 |
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10 | [this, idx, &argv](auto&& arg) { |
| 78 | if (idx < static_cast<int>(argv.size()) - 1) { | ||
| 79 |
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5 | std::stringstream value; |
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5 | value << argv[idx+1]; |
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5 | value >> this->*arg; |
| 82 | 5 | } | |
| 83 | }, | ||
| 84 |
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5 | prop); |
| 85 | } | ||
| 86 | }; | ||
| 87 | 10 | }; | |
| 88 | |||
| 89 |
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10 | auto register_callback(Argument p) { return register_callback(p.first, p.second); } |
| 90 | }; | ||
| 91 | |||
| 92 | #endif | ||
| 93 |