| 362 | } |
| 363 | |
| 364 | void TOpts::PrintUsage(const TStringBuf& program, IOutputStream& osIn, const NColorizer::TColors& colors) const { |
| 365 | TStringStream os; |
| 366 | |
| 367 | if (!Title.empty()) |
| 368 | os << Title << "\n\n"; |
| 369 | |
| 370 | PrintCmdLine(program, os, colors); |
| 371 | |
| 372 | TVector<TString> leftColumn(Opts_.size()); |
| 373 | TVector<size_t> leftColumnSizes(leftColumn.size()); |
| 374 | const size_t kMaxLeftWidth = 25; |
| 375 | size_t leftWidth = 0; |
| 376 | size_t requiredOptionsCount = 0; |
| 377 | NColorizer::TColors disabledColors(false); |
| 378 | |
| 379 | for (size_t i = 0; i < Opts_.size(); i++) { |
| 380 | const TOpt* opt = Opts_[i].Get(); |
| 381 | if (opt->IsHidden()) |
| 382 | continue; |
| 383 | leftColumn[i] = FormatOption(opt, colors); |
| 384 | size_t leftColumnSize = leftColumn[i].size(); |
| 385 | if (colors.IsTTY()) { |
| 386 | leftColumnSize -= NColorizer::TotalAnsiEscapeCodeLen(leftColumn[i]); |
| 387 | } |
| 388 | leftColumnSizes[i] = leftColumnSize; |
| 389 | if (leftColumnSize <= kMaxLeftWidth) { |
| 390 | leftWidth = Max(leftWidth, leftColumnSize); |
| 391 | } |
| 392 | if (opt->IsRequired()) |
| 393 | requiredOptionsCount++; |
| 394 | } |
| 395 | |
| 396 | const TString leftPadding(leftWidth, ' '); |
| 397 | |
| 398 | for (size_t sectionId = 0; sectionId <= 1; sectionId++) { |
| 399 | bool requiredOptionsSection = (sectionId == 0); |
| 400 | |
| 401 | if (requiredOptionsSection) { |
| 402 | if (requiredOptionsCount == 0) |
| 403 | continue; |
| 404 | os << Endl << colors.BoldColor() << "Required parameters" << colors.OldColor() << ":" << Endl; |
| 405 | } else { |
| 406 | if (requiredOptionsCount == Opts_.size()) |
| 407 | continue; |
| 408 | if (requiredOptionsCount == 0) |
| 409 | os << Endl << colors.BoldColor() << "Options" << colors.OldColor() << ":" << Endl; |
| 410 | else |
| 411 | os << Endl << colors.BoldColor() << "Optional parameters" << colors.OldColor() << ":" << Endl; // optional options would be a tautology |
| 412 | } |
| 413 | |
| 414 | for (size_t i = 0; i < Opts_.size(); i++) { |
| 415 | const TOpt* opt = Opts_[i].Get(); |
| 416 | |
| 417 | if (opt->IsHidden()) |
| 418 | continue; |
| 419 | if (opt->IsRequired() != requiredOptionsSection) |
| 420 | continue; |
| 421 |
no test coverage detected