-------------------------------------------------------------------------
| 349 | |
| 350 | //------------------------------------------------------------------------- |
| 351 | boost::optional<Options> |
| 352 | OptionsParser::Parse(int argc, |
| 353 | const char** argv, |
| 354 | std::wostream* emptyOptionsExplanation) const |
| 355 | { |
| 356 | try |
| 357 | { |
| 358 | auto options = Parse(argc, argv); |
| 359 | |
| 360 | if (!options && emptyOptionsExplanation) |
| 361 | *emptyOptionsExplanation << *programOptions_; |
| 362 | |
| 363 | return options; |
| 364 | } |
| 365 | catch (const boost::program_options::unknown_option& unknownOption) |
| 366 | { |
| 367 | ShowExplanation(emptyOptionsExplanation, unknownOption.what()); |
| 368 | } |
| 369 | catch (const Plugin::OptionsParserException& e) |
| 370 | { |
| 371 | ShowExplanation(emptyOptionsExplanation, e.what()); |
| 372 | } |
| 373 | |
| 374 | return boost::none; |
| 375 | } |
| 376 | |
| 377 | //------------------------------------------------------------------------- |
| 378 | void OptionsParser::ShowExplanation(std::wostream* emptyOptionsExplanation, |