CLI11
C++11 Command Line Interface Parser
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App_inl.hpp
1// Copyright (c) 2017-2025, University of Cincinnati, developed by Henry Schreiner
2// under NSF AWARD 1414736 and by the respective contributors.
3// All rights reserved.
4//
5// SPDX-License-Identifier: BSD-3-Clause
6
7#pragma once
8
9// IWYU pragma: private, include "CLI/CLI.hpp"
10
11// This include is only needed for IDEs to discover symbols
12#include "../App.hpp"
13
14#include "../Argv.hpp"
15#include "../Encoding.hpp"
16
17// [CLI11:public_includes:set]
18#include <algorithm>
19#include <exception>
20#include <iostream>
21#include <memory>
22#include <string>
23#include <utility>
24#include <vector>
25// [CLI11:public_includes:end]
26
27namespace CLI {
28// [CLI11:app_inl_hpp:verbatim]
29
30CLI11_INLINE App::App(std::string app_description, std::string app_name, App *parent)
31 : name_(std::move(app_name)), description_(std::move(app_description)), parent_(parent) {
32 // Inherit if not from a nullptr
33 if(parent_ != nullptr) {
34 if(parent_->help_ptr_ != nullptr)
36 if(parent_->help_all_ptr_ != nullptr)
38
41
42 // INHERITABLE
62 }
63}
64
65CLI11_NODISCARD CLI11_INLINE char **App::ensure_utf8(char **argv) {
66#ifdef _WIN32
67 (void)argv;
68
69 normalized_argv_ = detail::compute_win32_argv();
70
71 if(!normalized_argv_view_.empty()) {
72 normalized_argv_view_.clear();
73 }
74
75 normalized_argv_view_.reserve(normalized_argv_.size());
76 for(auto &arg : normalized_argv_) {
77 // using const_cast is well-defined, string is known to not be const.
78 normalized_argv_view_.push_back(const_cast<char *>(arg.data()));
79 }
80
81 return normalized_argv_view_.data();
82#else
83 return argv;
84#endif
85}
86
87CLI11_INLINE App *App::name(std::string app_name) {
88
89 if(parent_ != nullptr) {
90 std::string oname = name_;
91 name_ = app_name;
92 const auto &res = _compare_subcommand_names(*this, *_get_fallthrough_parent());
93 if(!res.empty()) {
94 name_ = oname;
95 throw(OptionAlreadyAdded(app_name + " conflicts with existing subcommand names"));
96 }
97 } else {
98 name_ = app_name;
99 }
100 has_automatic_name_ = false;
101 return this;
102}
103
104CLI11_INLINE App *App::alias(std::string app_name) {
105 if(app_name.empty() || !detail::valid_alias_name_string(app_name)) {
106 throw IncorrectConstruction("Aliases may not be empty or contain newlines or null characters");
107 }
108 if(parent_ != nullptr) {
109 aliases_.push_back(app_name);
110 const auto &res = _compare_subcommand_names(*this, *_get_fallthrough_parent());
111 if(!res.empty()) {
112 aliases_.pop_back();
113 throw(OptionAlreadyAdded("alias already matches an existing subcommand: " + app_name));
114 }
115 } else {
116 aliases_.push_back(app_name);
117 }
118
119 return this;
120}
121
122CLI11_INLINE App *App::immediate_callback(bool immediate) {
123 immediate_callback_ = immediate;
127 }
130 }
131 return this;
132}
133
134CLI11_INLINE App *App::ignore_case(bool value) {
135 if(value && !ignore_case_) {
136 ignore_case_ = true;
137 auto *p = (parent_ != nullptr) ? _get_fallthrough_parent() : this;
138 const auto &match = _compare_subcommand_names(*this, *p);
139 if(!match.empty()) {
140 ignore_case_ = false; // we are throwing so need to be exception invariant
141 throw OptionAlreadyAdded("ignore case would cause subcommand name conflicts: " + match);
142 }
143 }
144 ignore_case_ = value;
145 return this;
146}
147
148CLI11_INLINE App *App::ignore_underscore(bool value) {
149 if(value && !ignore_underscore_) {
150 ignore_underscore_ = true;
151 auto *p = (parent_ != nullptr) ? _get_fallthrough_parent() : this;
152 const auto &match = _compare_subcommand_names(*this, *p);
153 if(!match.empty()) {
154 ignore_underscore_ = false;
155 throw OptionAlreadyAdded("ignore underscore would cause subcommand name conflicts: " + match);
156 }
157 }
158 ignore_underscore_ = value;
159 return this;
160}
161
162CLI11_INLINE Option *App::add_option(std::string option_name,
163 callback_t option_callback,
164 std::string option_description,
165 bool defaulted,
166 std::function<std::string()> func) {
167 Option myopt{option_name, option_description, option_callback, this, allow_non_standard_options_};
168
169 // do a quick search in current subcommand for options
170 auto res =
171 std::find_if(std::begin(options_), std::end(options_), [&myopt](const Option_p &v) { return *v == myopt; });
172 if(res != options_.end()) {
173 const auto &matchname = (*res)->matching_name(myopt);
174 throw(OptionAlreadyAdded("added option matched existing option name: " + matchname));
175 }
177 const App *top_level_parent = this;
178 while(top_level_parent->name_.empty() && top_level_parent->parent_ != nullptr) {
179 top_level_parent = top_level_parent->parent_;
180 }
181
182 if(myopt.lnames_.empty() && myopt.snames_.empty()) {
183 // if the option is positional only there is additional potential for ambiguities in config files and needs
184 // to be checked
185 std::string test_name = "--" + myopt.get_single_name();
186 if(test_name.size() == 3) {
187 test_name.erase(0, 1);
188 }
189 // if we are in option group
190 const auto *op = top_level_parent->get_option_no_throw(test_name);
191 if(op != nullptr && op->get_configurable()) {
192 throw(OptionAlreadyAdded("added option positional name matches existing option: " + test_name));
193 }
194 // need to check if there is another positional with the same name that also doesn't have any long or
195 // short names
196 op = top_level_parent->get_option_no_throw(myopt.get_single_name());
197 if(op != nullptr && op->lnames_.empty() && op->snames_.empty()) {
198 throw(OptionAlreadyAdded("unable to disambiguate with existing option: " + test_name));
199 }
200 } else if(top_level_parent != this) {
201 for(auto &ln : myopt.lnames_) {
202 const auto *op = top_level_parent->get_option_no_throw(ln);
203 if(op != nullptr && op->get_configurable()) {
204 throw(OptionAlreadyAdded("added option matches existing positional option: " + ln));
205 }
206 op = top_level_parent->get_option_no_throw("--" + ln);
207 if(op != nullptr && op->get_configurable()) {
208 throw(OptionAlreadyAdded("added option matches existing option: --" + ln));
209 }
210 if(ln.size() == 1 || top_level_parent->get_allow_non_standard_option_names()) {
211 op = top_level_parent->get_option_no_throw("-" + ln);
212 if(op != nullptr && op->get_configurable()) {
213 throw(OptionAlreadyAdded("added option matches existing option: -" + ln));
214 }
215 }
216 }
217 for(auto &sn : myopt.snames_) {
218 const auto *op = top_level_parent->get_option_no_throw(sn);
219 if(op != nullptr && op->get_configurable()) {
220 throw(OptionAlreadyAdded("added option matches existing positional option: " + sn));
221 }
222 op = top_level_parent->get_option_no_throw("-" + sn);
223 if(op != nullptr && op->get_configurable()) {
224 throw(OptionAlreadyAdded("added option matches existing option: -" + sn));
225 }
226 op = top_level_parent->get_option_no_throw("--" + sn);
227 if(op != nullptr && op->get_configurable()) {
228 throw(OptionAlreadyAdded("added option matches existing option: --" + sn));
229 }
230 }
231 }
232 if(allow_non_standard_options_ && !myopt.snames_.empty()) {
233
234 for(auto &sname : myopt.snames_) {
235 if(sname.length() > 1) {
236 std::string test_name;
237 test_name.push_back('-');
238 test_name.push_back(sname.front());
239 const auto *op = top_level_parent->get_option_no_throw(test_name);
240 if(op != nullptr) {
241 throw(OptionAlreadyAdded("added option interferes with existing short option: " + sname));
242 }
243 }
244 }
245 for(auto &opt : top_level_parent->get_options()) {
246 for(const auto &osn : opt->snames_) {
247 if(osn.size() > 1) {
248 std::string test_name;
249 test_name.push_back(osn.front());
250 if(myopt.check_sname(test_name)) {
251 throw(OptionAlreadyAdded("added option interferes with existing non standard option: " + osn));
252 }
253 }
254 }
255 }
256 }
257 options_.emplace_back();
258 Option_p &option = options_.back();
259 option.reset(new Option(option_name, option_description, option_callback, this, allow_non_standard_options_));
260
261 // Set the default string capture function
262 option->default_function(func);
263
264 // For compatibility with CLI11 1.7 and before, capture the default string here
265 if(defaulted)
266 option->capture_default_str();
267
268 // Transfer defaults to the new option
269 option_defaults_.copy_to(option.get());
270
271 // Don't bother to capture if we already did
272 if(!defaulted && option->get_always_capture_default())
273 option->capture_default_str();
274
275 return option.get();
276}
277
278CLI11_INLINE Option *App::set_help_flag(std::string flag_name, const std::string &help_description) {
279 // take flag_description by const reference otherwise add_flag tries to assign to help_description
280 if(help_ptr_ != nullptr) {
282 help_ptr_ = nullptr;
283 }
284
285 // Empty name will simply remove the help flag
286 if(!flag_name.empty()) {
287 help_ptr_ = add_flag(flag_name, help_description);
288 help_ptr_->configurable(false)->callback_priority(CallbackPriority::First);
289 }
290
291 return help_ptr_;
292}
293
294CLI11_INLINE Option *App::set_help_all_flag(std::string help_name, const std::string &help_description) {
295 // take flag_description by const reference otherwise add_flag tries to assign to flag_description
296 if(help_all_ptr_ != nullptr) {
298 help_all_ptr_ = nullptr;
299 }
300
301 // Empty name will simply remove the help all flag
302 if(!help_name.empty()) {
303 help_all_ptr_ = add_flag(help_name, help_description);
304 help_all_ptr_->configurable(false)->callback_priority(CallbackPriority::First);
305 }
306
307 return help_all_ptr_;
308}
309
310CLI11_INLINE Option *
311App::set_version_flag(std::string flag_name, const std::string &versionString, const std::string &version_help) {
312 // take flag_description by const reference otherwise add_flag tries to assign to version_description
313 if(version_ptr_ != nullptr) {
315 version_ptr_ = nullptr;
316 }
317
318 // Empty name will simply remove the version flag
319 if(!flag_name.empty()) {
321 flag_name, [versionString]() { throw(CLI::CallForVersion(versionString, 0)); }, version_help);
322 version_ptr_->configurable(false)->callback_priority(CallbackPriority::First);
323 }
324
325 return version_ptr_;
326}
327
328CLI11_INLINE Option *
329App::set_version_flag(std::string flag_name, std::function<std::string()> vfunc, const std::string &version_help) {
330 if(version_ptr_ != nullptr) {
332 version_ptr_ = nullptr;
333 }
334
335 // Empty name will simply remove the version flag
336 if(!flag_name.empty()) {
338 add_flag_callback(flag_name, [vfunc]() { throw(CLI::CallForVersion(vfunc(), 0)); }, version_help);
339 version_ptr_->configurable(false)->callback_priority(CallbackPriority::First);
340 }
341
342 return version_ptr_;
343}
344
345CLI11_INLINE Option *App::_add_flag_internal(std::string flag_name, CLI::callback_t fun, std::string flag_description) {
346 Option *opt = nullptr;
347 if(detail::has_default_flag_values(flag_name)) {
348 // check for default values and if it has them
349 auto flag_defaults = detail::get_default_flag_values(flag_name);
350 detail::remove_default_flag_values(flag_name);
351 opt = add_option(std::move(flag_name), std::move(fun), std::move(flag_description), false);
352 for(const auto &fname : flag_defaults)
353 opt->fnames_.push_back(fname.first);
354 opt->default_flag_values_ = std::move(flag_defaults);
355 } else {
356 opt = add_option(std::move(flag_name), std::move(fun), std::move(flag_description), false);
357 }
358 // flags cannot have positional values
359 if(opt->get_positional()) {
360 auto pos_name = opt->get_name(true);
361 remove_option(opt);
362 throw IncorrectConstruction::PositionalFlag(pos_name);
363 }
364 opt->multi_option_policy(MultiOptionPolicy::TakeLast);
365 opt->expected(0);
366 opt->required(false);
367 return opt;
368}
369
370CLI11_INLINE Option *App::add_flag_callback(std::string flag_name,
371 std::function<void(void)> function,
372 std::string flag_description) {
373
374 CLI::callback_t fun = [function](const CLI::results_t &res) {
375 using CLI::detail::lexical_cast;
376 bool trigger{false};
377 auto result = lexical_cast(res[0], trigger);
378 if(result && trigger) {
379 function();
380 }
381 return result;
382 };
383 return _add_flag_internal(flag_name, std::move(fun), std::move(flag_description));
384}
385
386CLI11_INLINE Option *
387App::add_flag_function(std::string flag_name,
388 std::function<void(std::int64_t)> function,
389 std::string flag_description) {
390
391 CLI::callback_t fun = [function](const CLI::results_t &res) {
392 using CLI::detail::lexical_cast;
393 std::int64_t flag_count{0};
394 lexical_cast(res[0], flag_count);
395 function(flag_count);
396 return true;
397 };
398 return _add_flag_internal(flag_name, std::move(fun), std::move(flag_description))
399 ->multi_option_policy(MultiOptionPolicy::Sum);
400}
401
402CLI11_INLINE Option *App::set_config(std::string option_name,
403 std::string default_filename,
404 const std::string &help_message,
405 bool config_required) {
406
407 // Remove existing config if present
408 if(config_ptr_ != nullptr) {
410 config_ptr_ = nullptr; // need to remove the config_ptr completely
411 }
412
413 // Only add config if option passed
414 if(!option_name.empty()) {
415 config_ptr_ = add_option(option_name, help_message);
416 if(config_required) {
418 }
419 if(!default_filename.empty()) {
420 config_ptr_->default_str(std::move(default_filename));
422 }
424 // set the option to take the last value and reverse given by default
425 config_ptr_->multi_option_policy(MultiOptionPolicy::Reverse);
426 }
427
428 return config_ptr_;
429}
430
431CLI11_INLINE bool App::remove_option(Option *opt) {
432 // Make sure no links exist
433 for(Option_p &op : options_) {
434 op->remove_needs(opt);
435 op->remove_excludes(opt);
436 }
437
438 if(help_ptr_ == opt)
439 help_ptr_ = nullptr;
440 if(help_all_ptr_ == opt)
441 help_all_ptr_ = nullptr;
442 if(config_ptr_ == opt)
443 config_ptr_ = nullptr;
444
445 auto iterator =
446 std::find_if(std::begin(options_), std::end(options_), [opt](const Option_p &v) { return v.get() == opt; });
447 if(iterator != std::end(options_)) {
448 options_.erase(iterator);
449 return true;
450 }
451 return false;
452}
453
454CLI11_INLINE App *App::add_subcommand(std::string subcommand_name, std::string subcommand_description) {
455 if(!subcommand_name.empty() && !detail::valid_name_string(subcommand_name)) {
456 if(!detail::valid_first_char(subcommand_name[0])) {
458 "Subcommand name starts with invalid character, '!' and '-' and control characters");
459 }
460 for(auto c : subcommand_name) {
461 if(!detail::valid_later_char(c)) {
462 throw IncorrectConstruction(std::string("Subcommand name contains invalid character ('") + c +
463 "'), all characters are allowed except"
464 "'=',':','{','}', ' ', and control characters");
465 }
466 }
467 }
468 CLI::App_p subcom = std::shared_ptr<App>(new App(std::move(subcommand_description), subcommand_name, this));
469 return add_subcommand(std::move(subcom));
470}
471
472CLI11_INLINE App *App::add_subcommand(CLI::App_p subcom) {
473 if(!subcom)
474 throw IncorrectConstruction("passed App is not valid");
475 auto *ckapp = (name_.empty() && parent_ != nullptr) ? _get_fallthrough_parent() : this;
476 const auto &mstrg = _compare_subcommand_names(*subcom, *ckapp);
477 if(!mstrg.empty()) {
478 throw(OptionAlreadyAdded("subcommand name or alias matches existing subcommand: " + mstrg));
479 }
480 subcom->parent_ = this;
481 subcommands_.push_back(std::move(subcom));
482 return subcommands_.back().get();
483}
484
485CLI11_INLINE bool App::remove_subcommand(App *subcom) {
486 // Make sure no links exist
487 for(App_p &sub : subcommands_) {
488 sub->remove_excludes(subcom);
489 sub->remove_needs(subcom);
490 }
491
492 auto iterator = std::find_if(
493 std::begin(subcommands_), std::end(subcommands_), [subcom](const App_p &v) { return v.get() == subcom; });
494 if(iterator != std::end(subcommands_)) {
495 subcommands_.erase(iterator);
496 return true;
497 }
498 return false;
499}
500
501CLI11_INLINE App *App::get_subcommand(const App *subcom) const {
502 if(subcom == nullptr)
503 throw OptionNotFound("nullptr passed");
504 for(const App_p &subcomptr : subcommands_)
505 if(subcomptr.get() == subcom)
506 return subcomptr.get();
507 throw OptionNotFound(subcom->get_name());
508}
509
510CLI11_NODISCARD CLI11_INLINE App *App::get_subcommand(std::string subcom) const {
511 auto *subc = _find_subcommand(subcom, false, false);
512 if(subc == nullptr)
513 throw OptionNotFound(subcom);
514 return subc;
515}
516
517CLI11_NODISCARD CLI11_INLINE App *App::get_subcommand_no_throw(std::string subcom) const noexcept {
518 return _find_subcommand(subcom, false, false);
519}
520
521CLI11_NODISCARD CLI11_INLINE App *App::get_subcommand(int index) const {
522 if(index >= 0) {
523 auto uindex = static_cast<unsigned>(index);
524 if(uindex < subcommands_.size())
525 return subcommands_[uindex].get();
526 }
527 throw OptionNotFound(std::to_string(index));
528}
529
530CLI11_INLINE CLI::App_p App::get_subcommand_ptr(App *subcom) const {
531 if(subcom == nullptr)
532 throw OptionNotFound("nullptr passed");
533 for(const App_p &subcomptr : subcommands_)
534 if(subcomptr.get() == subcom)
535 return subcomptr;
536 throw OptionNotFound(subcom->get_name());
537}
538
539CLI11_NODISCARD CLI11_INLINE CLI::App_p App::get_subcommand_ptr(std::string subcom) const {
540 for(const App_p &subcomptr : subcommands_)
541 if(subcomptr->check_name(subcom))
542 return subcomptr;
543 throw OptionNotFound(subcom);
544}
545
546CLI11_NODISCARD CLI11_INLINE CLI::App_p App::get_subcommand_ptr(int index) const {
547 if(index >= 0) {
548 auto uindex = static_cast<unsigned>(index);
549 if(uindex < subcommands_.size())
550 return subcommands_[uindex];
551 }
552 throw OptionNotFound(std::to_string(index));
553}
554
555CLI11_NODISCARD CLI11_INLINE CLI::App *App::get_option_group(std::string group_name) const {
556 for(const App_p &app : subcommands_) {
557 if(app->name_.empty() && app->group_ == group_name) {
558 return app.get();
559 }
560 }
561 throw OptionNotFound(group_name);
562}
563
564CLI11_NODISCARD CLI11_INLINE std::size_t App::count_all() const {
565 std::size_t cnt{0};
566 for(const auto &opt : options_) {
567 cnt += opt->count();
568 }
569 for(const auto &sub : subcommands_) {
570 cnt += sub->count_all();
571 }
572 if(!get_name().empty()) { // for named subcommands add the number of times the subcommand was called
573 cnt += parsed_;
574 }
575 return cnt;
576}
577
578CLI11_INLINE void App::clear() {
579
580 parsed_ = 0;
581 pre_parse_called_ = false;
582
583 missing_.clear();
584 parsed_subcommands_.clear();
585 parse_order_.clear();
586 for(const Option_p &opt : options_) {
587 opt->clear();
588 }
589 for(const App_p &subc : subcommands_) {
590 subc->clear();
591 }
592}
593
594CLI11_INLINE void App::parse(int argc, const char *const *argv) { parse_char_t(argc, argv); }
595CLI11_INLINE void App::parse(int argc, const wchar_t *const *argv) { parse_char_t(argc, argv); }
596
597namespace detail {
598
599// Do nothing or perform narrowing
600CLI11_INLINE const char *maybe_narrow(const char *str) { return str; }
601CLI11_INLINE std::string maybe_narrow(const wchar_t *str) { return narrow(str); }
602
603} // namespace detail
604
605template <class CharT> CLI11_INLINE void App::parse_char_t(int argc, const CharT *const *argv) {
606 // If the name is not set, read from command line
607 if(name_.empty() || has_automatic_name_) {
608 has_automatic_name_ = true;
609 name_ = detail::maybe_narrow(argv[0]);
610 }
611
612 std::vector<std::string> args;
613 args.reserve(static_cast<std::size_t>(argc) - 1U);
614 for(auto i = static_cast<std::size_t>(argc) - 1U; i > 0U; --i)
615 args.emplace_back(detail::maybe_narrow(argv[i]));
616
617 parse(std::move(args));
618}
619
620CLI11_INLINE void App::parse(std::string commandline, bool program_name_included) {
621
622 if(program_name_included) {
623 auto nstr = detail::split_program_name(commandline);
624 if((name_.empty()) || (has_automatic_name_)) {
625 has_automatic_name_ = true;
626 name_ = nstr.first;
627 }
628 commandline = std::move(nstr.second);
629 } else {
630 detail::trim(commandline);
631 }
632 // the next section of code is to deal with quoted arguments after an '=' or ':' for windows like operations
633 if(!commandline.empty()) {
634 commandline = detail::find_and_modify(commandline, "=", detail::escape_detect);
636 commandline = detail::find_and_modify(commandline, ":", detail::escape_detect);
637 }
638
639 auto args = detail::split_up(std::move(commandline));
640 // remove all empty strings
641 args.erase(std::remove(args.begin(), args.end(), std::string{}), args.end());
642 try {
643 detail::remove_quotes(args);
644 } catch(const std::invalid_argument &arg) {
645 throw CLI::ParseError(arg.what(), CLI::ExitCodes::InvalidError);
646 }
647 std::reverse(args.begin(), args.end());
648 parse(std::move(args));
649}
650
651CLI11_INLINE void App::parse(std::wstring commandline, bool program_name_included) {
652 parse(narrow(commandline), program_name_included);
653}
654
655CLI11_INLINE void App::parse(std::vector<std::string> &args) {
656 // Clear if parsed
657 if(parsed_ > 0)
658 clear();
659
660 // parsed_ is incremented in commands/subcommands,
661 // but placed here to make sure this is cleared when
662 // running parse after an error is thrown, even by _validate or _configure.
663 parsed_ = 1;
664 _validate();
665 _configure();
666 // set the parent as nullptr as this object should be the top now
667 parent_ = nullptr;
668 parsed_ = 0;
669
670 _parse(args);
671 run_callback();
672}
673
674CLI11_INLINE void App::parse(std::vector<std::string> &&args) {
675 // Clear if parsed
676 if(parsed_ > 0)
677 clear();
678
679 // parsed_ is incremented in commands/subcommands,
680 // but placed here to make sure this is cleared when
681 // running parse after an error is thrown, even by _validate or _configure.
682 parsed_ = 1;
683 _validate();
684 _configure();
685 // set the parent as nullptr as this object should be the top now
686 parent_ = nullptr;
687 parsed_ = 0;
688
689 _parse(std::move(args));
690 run_callback();
691}
692
693CLI11_INLINE void App::parse_from_stream(std::istream &input) {
694 if(parsed_ == 0) {
695 _validate();
696 _configure();
697 // set the parent as nullptr as this object should be the top now
698 }
699
700 _parse_stream(input);
701 run_callback();
702}
703
704CLI11_INLINE int App::exit(const Error &e, std::ostream &out, std::ostream &err) const {
705
707 if(e.get_name() == "RuntimeError")
708 return e.get_exit_code();
709
710 if(e.get_name() == "CallForHelp") {
711 out << help();
712 return e.get_exit_code();
713 }
714
715 if(e.get_name() == "CallForAllHelp") {
716 out << help("", AppFormatMode::All);
717 return e.get_exit_code();
718 }
719
720 if(e.get_name() == "CallForVersion") {
721 out << e.what() << '\n';
722 return e.get_exit_code();
723 }
724
725 if(e.get_exit_code() != static_cast<int>(ExitCodes::Success)) {
727 err << failure_message_(this, e) << std::flush;
728 }
729
730 return e.get_exit_code();
731}
732
733CLI11_INLINE std::vector<const App *> App::get_subcommands(const std::function<bool(const App *)> &filter) const {
734 std::vector<const App *> subcomms(subcommands_.size());
735 std::transform(
736 std::begin(subcommands_), std::end(subcommands_), std::begin(subcomms), [](const App_p &v) { return v.get(); });
737
738 if(filter) {
739 subcomms.erase(std::remove_if(std::begin(subcomms),
740 std::end(subcomms),
741 [&filter](const App *app) { return !filter(app); }),
742 std::end(subcomms));
743 }
744
745 return subcomms;
746}
747
748CLI11_INLINE std::vector<App *> App::get_subcommands(const std::function<bool(App *)> &filter) {
749 std::vector<App *> subcomms(subcommands_.size());
750 std::transform(
751 std::begin(subcommands_), std::end(subcommands_), std::begin(subcomms), [](const App_p &v) { return v.get(); });
752
753 if(filter) {
754 subcomms.erase(
755 std::remove_if(std::begin(subcomms), std::end(subcomms), [&filter](App *app) { return !filter(app); }),
756 std::end(subcomms));
757 }
759 return subcomms;
760}
762CLI11_INLINE bool App::remove_excludes(Option *opt) {
763 auto iterator = std::find(std::begin(exclude_options_), std::end(exclude_options_), opt);
764 if(iterator == std::end(exclude_options_)) {
765 return false;
766 }
767 exclude_options_.erase(iterator);
768 return true;
769}
770
771CLI11_INLINE bool App::remove_excludes(App *app) {
772 auto iterator = std::find(std::begin(exclude_subcommands_), std::end(exclude_subcommands_), app);
773 if(iterator == std::end(exclude_subcommands_)) {
774 return false;
775 }
776 auto *other_app = *iterator;
777 exclude_subcommands_.erase(iterator);
778 other_app->remove_excludes(this);
779 return true;
780}
781
782CLI11_INLINE bool App::remove_needs(Option *opt) {
783 auto iterator = std::find(std::begin(need_options_), std::end(need_options_), opt);
784 if(iterator == std::end(need_options_)) {
785 return false;
786 }
787 need_options_.erase(iterator);
788 return true;
789}
790
791CLI11_INLINE bool App::remove_needs(App *app) {
792 auto iterator = std::find(std::begin(need_subcommands_), std::end(need_subcommands_), app);
793 if(iterator == std::end(need_subcommands_)) {
794 return false;
795 }
796 need_subcommands_.erase(iterator);
797 return true;
798}
799
800CLI11_NODISCARD CLI11_INLINE std::string App::help(std::string prev, AppFormatMode mode) const {
801 if(prev.empty())
802 prev = get_name();
803 else
804 prev += " " + get_name();
805
806 // Delegate to subcommand if needed
807 auto selected_subcommands = get_subcommands();
808 if(!selected_subcommands.empty()) {
809 return selected_subcommands.back()->help(prev, mode);
810 }
811 return formatter_->make_help(this, prev, mode);
812}
813
814CLI11_NODISCARD CLI11_INLINE std::string App::version() const {
815 std::string val;
816 if(version_ptr_ != nullptr) {
817 // copy the results for reuse later
818 results_t rv = version_ptr_->results();
820 version_ptr_->add_result("true");
821 try {
823 } catch(const CLI::CallForVersion &cfv) {
824 val = cfv.what();
825 }
828 }
829 return val;
830}
831
832CLI11_INLINE std::vector<const Option *> App::get_options(const std::function<bool(const Option *)> filter) const {
833 std::vector<const Option *> options(options_.size());
834 std::transform(
835 std::begin(options_), std::end(options_), std::begin(options), [](const Option_p &val) { return val.get(); });
836
837 if(filter) {
838 options.erase(std::remove_if(std::begin(options),
839 std::end(options),
840 [&filter](const Option *opt) { return !filter(opt); }),
841 std::end(options));
842 }
843 for(const auto &subcp : subcommands_) {
844 // also check down into nameless subcommands
845 const App *subc = subcp.get();
846 if(subc->get_name().empty() && !subc->get_group().empty() && subc->get_group().front() == '+') {
847 std::vector<const Option *> subcopts = subc->get_options(filter);
848 options.insert(options.end(), subcopts.begin(), subcopts.end());
849 }
850 }
851 return options;
852}
853
854CLI11_INLINE std::vector<Option *> App::get_options(const std::function<bool(Option *)> filter) {
855 std::vector<Option *> options(options_.size());
856 std::transform(
857 std::begin(options_), std::end(options_), std::begin(options), [](const Option_p &val) { return val.get(); });
858
859 if(filter) {
860 options.erase(
861 std::remove_if(std::begin(options), std::end(options), [&filter](Option *opt) { return !filter(opt); }),
862 std::end(options));
863 }
864 for(auto &subc : subcommands_) {
865 // also check down into nameless subcommands and specific groups
866 if(subc->get_name().empty() || (!subc->get_group().empty() && subc->get_group().front() == '+')) {
867 auto subcopts = subc->get_options(filter);
868 options.insert(options.end(), subcopts.begin(), subcopts.end());
869 }
870 }
871 return options;
872}
873
874CLI11_NODISCARD CLI11_INLINE Option *App::get_option_no_throw(std::string option_name) noexcept {
875 for(Option_p &opt : options_) {
876 if(opt->check_name(option_name)) {
877 return opt.get();
878 }
879 }
880 for(auto &subc : subcommands_) {
881 // also check down into nameless subcommands
882 if(subc->get_name().empty()) {
883 auto *opt = subc->get_option_no_throw(option_name);
884 if(opt != nullptr) {
885 return opt;
886 }
887 }
888 }
889 return nullptr;
890}
891
892CLI11_NODISCARD CLI11_INLINE const Option *App::get_option_no_throw(std::string option_name) const noexcept {
893 for(const Option_p &opt : options_) {
894 if(opt->check_name(option_name)) {
895 return opt.get();
896 }
897 }
898 for(const auto &subc : subcommands_) {
899 // also check down into nameless subcommands
900 if(subc->get_name().empty()) {
901 auto *opt = subc->get_option_no_throw(option_name);
902 if(opt != nullptr) {
903 return opt;
904 }
905 }
906 }
907 return nullptr;
908}
909
910CLI11_NODISCARD CLI11_INLINE std::string App::get_display_name(bool with_aliases) const {
911 if(name_.empty()) {
912 return std::string("[Option Group: ") + get_group() + "]";
913 }
914 if(aliases_.empty() || !with_aliases) {
915 return name_;
916 }
917 std::string dispname = name_;
918 for(const auto &lalias : aliases_) {
919 dispname.push_back(',');
920 dispname.push_back(' ');
921 dispname.append(lalias);
922 }
923 return dispname;
924}
925
926CLI11_NODISCARD CLI11_INLINE bool App::check_name(std::string name_to_check) const {
927 auto result = check_name_detail(std::move(name_to_check));
928 return (result != NameMatch::none);
929}
930
931CLI11_NODISCARD CLI11_INLINE App::NameMatch App::check_name_detail(std::string name_to_check) const {
932 std::string local_name = name_;
934 local_name = detail::remove_underscore(name_);
935 name_to_check = detail::remove_underscore(name_to_check);
936 }
937 if(ignore_case_) {
938 local_name = detail::to_lower(name_);
939 name_to_check = detail::to_lower(name_to_check);
940 }
941
942 if(local_name == name_to_check) {
943 return App::NameMatch::exact;
944 }
945 if(allow_prefix_matching_ && name_to_check.size() < local_name.size()) {
946 if(local_name.compare(0, name_to_check.size(), name_to_check) == 0) {
947 return App::NameMatch::prefix;
948 }
949 }
950 for(std::string les : aliases_) { // NOLINT(performance-for-range-copy)
952 les = detail::remove_underscore(les);
953 }
954 if(ignore_case_) {
955 les = detail::to_lower(les);
956 }
957 if(les == name_to_check) {
958 return App::NameMatch::exact;
959 }
960 if(allow_prefix_matching_ && name_to_check.size() < les.size()) {
961 if(les.compare(0, name_to_check.size(), name_to_check) == 0) {
962 return App::NameMatch::prefix;
963 }
964 }
965 }
966 return App::NameMatch::none;
967}
968
969CLI11_NODISCARD CLI11_INLINE std::vector<std::string> App::get_groups() const {
970 std::vector<std::string> groups;
971
972 for(const Option_p &opt : options_) {
973 // Add group if it is not already in there
974 if(std::find(groups.begin(), groups.end(), opt->get_group()) == groups.end()) {
975 groups.push_back(opt->get_group());
976 }
977 }
978
979 return groups;
980}
981
982CLI11_NODISCARD CLI11_INLINE std::vector<std::string> App::remaining(bool recurse) const {
983 std::vector<std::string> miss_list;
984 for(const std::pair<detail::Classifier, std::string> &miss : missing_) {
985 miss_list.push_back(std::get<1>(miss));
986 }
987 // Get from a subcommand that may allow extras
988 if(recurse) {
989 if(!allow_extras_) {
990 for(const auto &sub : subcommands_) {
991 if(sub->name_.empty() && !sub->missing_.empty()) {
992 for(const std::pair<detail::Classifier, std::string> &miss : sub->missing_) {
993 miss_list.push_back(std::get<1>(miss));
994 }
995 }
996 }
997 }
998 // Recurse into subcommands
999
1000 for(const App *sub : parsed_subcommands_) {
1001 std::vector<std::string> output = sub->remaining(recurse);
1002 std::copy(std::begin(output), std::end(output), std::back_inserter(miss_list));
1003 }
1004 }
1005 return miss_list;
1006}
1007
1008CLI11_NODISCARD CLI11_INLINE std::vector<std::string> App::remaining_for_passthrough(bool recurse) const {
1009 std::vector<std::string> miss_list = remaining(recurse);
1010 std::reverse(std::begin(miss_list), std::end(miss_list));
1011 return miss_list;
1012}
1013
1014CLI11_NODISCARD CLI11_INLINE std::size_t App::remaining_size(bool recurse) const {
1015 auto remaining_options = static_cast<std::size_t>(std::count_if(
1016 std::begin(missing_), std::end(missing_), [](const std::pair<detail::Classifier, std::string> &val) {
1017 return val.first != detail::Classifier::POSITIONAL_MARK;
1018 }));
1019
1020 if(recurse) {
1021 for(const App_p &sub : subcommands_) {
1022 remaining_options += sub->remaining_size(recurse);
1023 }
1024 }
1025 return remaining_options;
1026}
1027
1028CLI11_INLINE void App::_validate() const {
1029 // count the number of positional only args
1030 auto pcount = std::count_if(std::begin(options_), std::end(options_), [](const Option_p &opt) {
1031 return opt->get_items_expected_max() >= detail::expected_max_vector_size && !opt->nonpositional();
1032 });
1033 if(pcount > 1) {
1034 auto pcount_req = std::count_if(std::begin(options_), std::end(options_), [](const Option_p &opt) {
1035 return opt->get_items_expected_max() >= detail::expected_max_vector_size && !opt->nonpositional() &&
1036 opt->get_required();
1037 });
1038 if(pcount - pcount_req > 1) {
1039 throw InvalidError(name_);
1040 }
1041 }
1042
1043 std::size_t nameless_subs{0};
1044 for(const App_p &app : subcommands_) {
1045 app->_validate();
1046 if(app->get_name().empty())
1047 ++nameless_subs;
1048 }
1049
1050 if(require_option_min_ > 0) {
1051 if(require_option_max_ > 0) {
1053 throw(InvalidError("Required min options greater than required max options", ExitCodes::InvalidError));
1054 }
1055 }
1056 if(require_option_min_ > (options_.size() + nameless_subs)) {
1057 throw(
1058 InvalidError("Required min options greater than number of available options", ExitCodes::InvalidError));
1059 }
1060 }
1061}
1062
1063CLI11_INLINE void App::_configure() {
1064 if(default_startup == startup_mode::enabled) {
1065 disabled_ = false;
1066 } else if(default_startup == startup_mode::disabled) {
1067 disabled_ = true;
1068 }
1069 for(const App_p &app : subcommands_) {
1070 if(app->has_automatic_name_) {
1071 app->name_.clear();
1072 }
1073 if(app->name_.empty()) {
1074 app->fallthrough_ = false; // make sure fallthrough_ is false to prevent infinite loop
1075 app->prefix_command_ = false;
1076 }
1077 // make sure the parent is set to be this object in preparation for parse
1078 app->parent_ = this;
1079 app->_configure();
1080 }
1081}
1082
1083CLI11_INLINE void App::run_callback(bool final_mode, bool suppress_final_callback) {
1084 pre_callback();
1085 // in the main app if immediate_callback_ is set it runs the main callback before the used subcommands
1086 if(!final_mode && parse_complete_callback_) {
1088 }
1089 // run the callbacks for the received subcommands
1090 for(App *subc : get_subcommands()) {
1091 if(subc->parent_ == this) {
1092 subc->run_callback(true, suppress_final_callback);
1093 }
1094 }
1095 // now run callbacks for option_groups
1096 for(auto &subc : subcommands_) {
1097 if(subc->name_.empty() && subc->count_all() > 0) {
1098 subc->run_callback(true, suppress_final_callback);
1099 }
1100 }
1101
1102 // finally run the main callback
1103 if(final_callback_ && (parsed_ > 0) && (!suppress_final_callback)) {
1104 if(!name_.empty() || count_all() > 0 || parent_ == nullptr) {
1106 }
1107 }
1108}
1109
1110CLI11_NODISCARD CLI11_INLINE bool App::_valid_subcommand(const std::string &current, bool ignore_used) const {
1111 // Don't match if max has been reached - but still check parents
1114 return parent_ != nullptr && parent_->_valid_subcommand(current, ignore_used);
1115 }
1116 auto *com = _find_subcommand(current, true, ignore_used);
1117 if(com != nullptr) {
1118 return true;
1119 }
1120 // Check parent if exists, else return false
1122 return parent_ != nullptr && parent_->_valid_subcommand(current, ignore_used);
1123 }
1124 return false;
1125}
1126
1127CLI11_NODISCARD CLI11_INLINE detail::Classifier App::_recognize(const std::string &current,
1128 bool ignore_used_subcommands) const {
1129 std::string dummy1, dummy2;
1130
1131 if(current == "--")
1132 return detail::Classifier::POSITIONAL_MARK;
1133 if(_valid_subcommand(current, ignore_used_subcommands))
1134 return detail::Classifier::SUBCOMMAND;
1135 if(detail::split_long(current, dummy1, dummy2))
1136 return detail::Classifier::LONG;
1137 if(detail::split_short(current, dummy1, dummy2)) {
1138 if((dummy1[0] >= '0' && dummy1[0] <= '9') ||
1139 (dummy1[0] == '.' && !dummy2.empty() && (dummy2[0] >= '0' && dummy2[0] <= '9'))) {
1140 // it looks like a number but check if it could be an option
1141 if(get_option_no_throw(std::string{'-', dummy1[0]}) == nullptr) {
1142 return detail::Classifier::NONE;
1143 }
1144 }
1145 return detail::Classifier::SHORT;
1146 }
1147 if((allow_windows_style_options_) && (detail::split_windows_style(current, dummy1, dummy2)))
1148 return detail::Classifier::WINDOWS_STYLE;
1149 if((current == "++") && !name_.empty() && parent_ != nullptr)
1150 return detail::Classifier::SUBCOMMAND_TERMINATOR;
1151 auto dotloc = current.find_first_of('.');
1152 if(dotloc != std::string::npos) {
1153 auto *cm = _find_subcommand(current.substr(0, dotloc), true, ignore_used_subcommands);
1154 if(cm != nullptr) {
1155 auto res = cm->_recognize(current.substr(dotloc + 1), ignore_used_subcommands);
1156 if(res == detail::Classifier::SUBCOMMAND) {
1157 return res;
1158 }
1159 }
1160 }
1161 return detail::Classifier::NONE;
1162}
1163
1164CLI11_INLINE bool App::_process_config_file(const std::string &config_file, bool throw_error) {
1165 auto path_result = detail::check_path(config_file.c_str());
1166 if(path_result == detail::path_type::file) {
1167 try {
1168 std::vector<ConfigItem> values = config_formatter_->from_file(config_file);
1169 _parse_config(values);
1170 return true;
1171 } catch(const FileError &) {
1172 if(throw_error) {
1173 throw;
1174 }
1175 return false;
1176 }
1177 } else if(throw_error) {
1178 throw FileError::Missing(config_file);
1179 } else {
1180 return false;
1181 }
1182}
1183
1184CLI11_INLINE void App::_process_config_file() {
1185 if(config_ptr_ != nullptr) {
1186 bool config_required = config_ptr_->get_required();
1187 auto file_given = config_ptr_->count() > 0;
1188 if(!(file_given || config_ptr_->envname_.empty())) {
1189 std::string ename_string = detail::get_environment_value(config_ptr_->envname_);
1190 if(!ename_string.empty()) {
1191 config_ptr_->add_result(ename_string);
1192 }
1193 }
1195
1196 auto config_files = config_ptr_->as<std::vector<std::string>>();
1197 bool files_used{file_given};
1198 if(config_files.empty() || config_files.front().empty()) {
1199 if(config_required) {
1200 throw FileError("config file is required but none was given");
1201 }
1202 return;
1203 }
1204 for(const auto &config_file : config_files) {
1205 if(_process_config_file(config_file, config_required || file_given)) {
1206 files_used = true;
1207 }
1208 }
1209 if(!files_used) {
1210 // this is done so the count shows as 0 if no callbacks were processed
1211 config_ptr_->clear();
1212 bool force = config_ptr_->force_callback_;
1216 }
1217 }
1218}
1219
1220CLI11_INLINE void App::_process_env() {
1221 for(const Option_p &opt : options_) {
1222 if(opt->count() == 0 && !opt->envname_.empty()) {
1223 std::string ename_string = detail::get_environment_value(opt->envname_);
1224 if(!ename_string.empty()) {
1225 std::string result = ename_string;
1226 result = opt->_validate(result, 0);
1227 if(result.empty()) {
1228 opt->add_result(ename_string);
1229 }
1230 }
1231 }
1232 }
1233
1234 for(App_p &sub : subcommands_) {
1235 if(sub->get_name().empty() || (sub->count_all() > 0 && !sub->parse_complete_callback_)) {
1236 // only process environment variables if the callback has actually been triggered already
1237 sub->_process_env();
1238 }
1239 }
1240}
1241
1242CLI11_INLINE void App::_process_callbacks(CallbackPriority priority) {
1243
1244 for(App_p &sub : subcommands_) {
1245 // process the priority option_groups first
1246 if(sub->get_name().empty() && sub->parse_complete_callback_) {
1247 if(sub->count_all() > 0) {
1248 sub->_process_callbacks(priority);
1249 if(priority == CallbackPriority::Normal) {
1250 // only run the subcommand callback at normal priority
1251 sub->run_callback();
1252 }
1253 }
1254 }
1255 }
1256
1257 for(const Option_p &opt : options_) {
1258 if(opt->get_callback_priority() == priority) {
1259 if((*opt) && !opt->get_callback_run()) {
1260 opt->run_callback();
1261 }
1262 }
1263 }
1264 for(App_p &sub : subcommands_) {
1265 if(!sub->parse_complete_callback_) {
1266 sub->_process_callbacks(priority);
1267 }
1268 }
1269}
1270
1271CLI11_INLINE void App::_process_help_flags(CallbackPriority priority, bool trigger_help, bool trigger_all_help) const {
1272 const Option *help_ptr = get_help_ptr();
1273 const Option *help_all_ptr = get_help_all_ptr();
1274
1275 if(help_ptr != nullptr && help_ptr->count() > 0 && help_ptr->get_callback_priority() == priority)
1276 trigger_help = true;
1277 if(help_all_ptr != nullptr && help_all_ptr->count() > 0 && help_all_ptr->get_callback_priority() == priority)
1278 trigger_all_help = true;
1279
1280 // If there were parsed subcommands, call those. First subcommand wins if there are multiple ones.
1281 if(!parsed_subcommands_.empty()) {
1282 for(const App *sub : parsed_subcommands_)
1283 sub->_process_help_flags(priority, trigger_help, trigger_all_help);
1284
1285 // Only the final subcommand should call for help. All help wins over help.
1286 } else if(trigger_all_help) {
1287 throw CallForAllHelp();
1288 } else if(trigger_help) {
1289 throw CallForHelp();
1290 }
1291}
1292
1293CLI11_INLINE void App::_process_requirements() {
1294 // check excludes
1295 bool excluded{false};
1296 std::string excluder;
1297 for(const auto &opt : exclude_options_) {
1298 if(opt->count() > 0) {
1299 excluded = true;
1300 excluder = opt->get_name();
1301 }
1302 }
1303 for(const auto &subc : exclude_subcommands_) {
1304 if(subc->count_all() > 0) {
1305 excluded = true;
1306 excluder = subc->get_display_name();
1307 }
1308 }
1309 if(excluded) {
1310 if(count_all() > 0) {
1311 throw ExcludesError(get_display_name(), excluder);
1312 }
1313 // if we are excluded but didn't receive anything, just return
1314 return;
1315 }
1316
1317 // check excludes
1318 bool missing_needed{false};
1319 std::string missing_need;
1320 for(const auto &opt : need_options_) {
1321 if(opt->count() == 0) {
1322 missing_needed = true;
1323 missing_need = opt->get_name();
1324 }
1325 }
1326 for(const auto &subc : need_subcommands_) {
1327 if(subc->count_all() == 0) {
1328 missing_needed = true;
1329 missing_need = subc->get_display_name();
1330 }
1331 }
1332 if(missing_needed) {
1333 if(count_all() > 0) {
1334 throw RequiresError(get_display_name(), missing_need);
1335 }
1336 // if we missing something but didn't have any options, just return
1337 return;
1338 }
1339
1340 std::size_t used_options = 0;
1341 for(const Option_p &opt : options_) {
1342
1343 if(opt->count() != 0) {
1344 ++used_options;
1345 }
1346 // Required but empty
1347 if(opt->get_required() && opt->count() == 0) {
1348 throw RequiredError(opt->get_name());
1349 }
1350 // Requires
1351 for(const Option *opt_req : opt->needs_)
1352 if(opt->count() > 0 && opt_req->count() == 0)
1353 throw RequiresError(opt->get_name(), opt_req->get_name());
1354 // Excludes
1355 for(const Option *opt_ex : opt->excludes_)
1356 if(opt->count() > 0 && opt_ex->count() != 0)
1357 throw ExcludesError(opt->get_name(), opt_ex->get_name());
1358 }
1359 // check for the required number of subcommands
1360 if(require_subcommand_min_ > 0) {
1361 auto selected_subcommands = get_subcommands();
1362 if(require_subcommand_min_ > selected_subcommands.size())
1363 throw RequiredError::Subcommand(require_subcommand_min_);
1364 }
1365
1366 // Max error cannot occur, the extra subcommand will parse as an ExtrasError or a remaining item.
1367
1368 // run this loop to check how many unnamed subcommands were actually used since they are considered options
1369 // from the perspective of an App
1370 for(App_p &sub : subcommands_) {
1371 if(sub->disabled_)
1372 continue;
1373 if(sub->name_.empty() && sub->count_all() > 0) {
1374 ++used_options;
1375 }
1376 }
1377
1378 if(require_option_min_ > used_options || (require_option_max_ > 0 && require_option_max_ < used_options)) {
1379 auto option_list = detail::join(options_, [this](const Option_p &ptr) {
1380 if(ptr.get() == help_ptr_ || ptr.get() == help_all_ptr_) {
1381 return std::string{};
1382 }
1383 return ptr->get_name(false, true);
1384 });
1385
1386 auto subc_list = get_subcommands([](App *app) { return ((app->get_name().empty()) && (!app->disabled_)); });
1387 if(!subc_list.empty()) {
1388 option_list += "," + detail::join(subc_list, [](const App *app) { return app->get_display_name(); });
1389 }
1390 throw RequiredError::Option(require_option_min_, require_option_max_, used_options, option_list);
1391 }
1392
1393 // now process the requirements for subcommands if needed
1394 for(App_p &sub : subcommands_) {
1395 if(sub->disabled_)
1396 continue;
1397 if(sub->name_.empty() && sub->required_ == false) {
1398 if(sub->count_all() == 0) {
1399 if(require_option_min_ > 0 && require_option_min_ <= used_options) {
1400 continue;
1401 // if we have met the requirement and there is nothing in this option group skip checking
1402 // requirements
1403 }
1404 if(require_option_max_ > 0 && used_options >= require_option_min_) {
1405 continue;
1406 // if we have met the requirement and there is nothing in this option group skip checking
1407 // requirements
1408 }
1409 }
1410 }
1411 if(sub->count() > 0 || sub->name_.empty()) {
1412 sub->_process_requirements();
1413 }
1414
1415 if(sub->required_ && sub->count_all() == 0) {
1416 throw(CLI::RequiredError(sub->get_display_name()));
1417 }
1418 }
1419}
1420
1421CLI11_INLINE void App::_process() {
1422 // help takes precedence over other potential errors and config and environment shouldn't be processed if help
1423 // throws
1424 _process_callbacks(CallbackPriority::FirstPreHelp);
1425 _process_help_flags(CallbackPriority::First);
1426 _process_callbacks(CallbackPriority::First);
1427
1428 std::exception_ptr config_exception;
1429 try {
1430 // the config file might generate a FileError but that should not be processed until later in the process
1431 // to allow for help, version and other errors to generate first.
1433
1434 // process env shouldn't throw but no reason to process it if config generated an error
1435 _process_env();
1436 } catch(const CLI::FileError &) {
1437 config_exception = std::current_exception();
1438 }
1439 // callbacks and requirements processing can generate exceptions which should take priority
1440 // over the config file error if one exists.
1441 _process_callbacks(CallbackPriority::PreRequirementsCheckPreHelp);
1442 _process_help_flags(CallbackPriority::PreRequirementsCheck);
1443 _process_callbacks(CallbackPriority::PreRequirementsCheck);
1444
1446
1447 _process_callbacks(CallbackPriority::NormalPreHelp);
1448 _process_help_flags(CallbackPriority::Normal);
1449 _process_callbacks(CallbackPriority::Normal);
1450
1451 if(config_exception) {
1452 std::rethrow_exception(config_exception);
1453 }
1454
1455 _process_callbacks(CallbackPriority::LastPreHelp);
1456 _process_help_flags(CallbackPriority::Last);
1457 _process_callbacks(CallbackPriority::Last);
1458}
1459
1460CLI11_INLINE void App::_process_extras() {
1461 if(!(allow_extras_ || prefix_command_)) {
1462 std::size_t num_left_over = remaining_size();
1463 if(num_left_over > 0) {
1464 throw ExtrasError(name_, remaining(false));
1465 }
1466 }
1467
1468 for(App_p &sub : subcommands_) {
1469 if(sub->count() > 0)
1470 sub->_process_extras();
1471 }
1472}
1473
1474CLI11_INLINE void App::_process_extras(std::vector<std::string> &args) {
1475 if(!(allow_extras_ || prefix_command_)) {
1476 std::size_t num_left_over = remaining_size();
1477 if(num_left_over > 0) {
1478 args = remaining(false);
1479 throw ExtrasError(name_, args);
1480 }
1481 }
1482
1483 for(App_p &sub : subcommands_) {
1484 if(sub->count() > 0)
1485 sub->_process_extras(args);
1486 }
1487}
1488
1489CLI11_INLINE void App::increment_parsed() {
1490 ++parsed_;
1491 for(App_p &sub : subcommands_) {
1492 if(sub->get_name().empty())
1493 sub->increment_parsed();
1494 }
1495}
1496
1497CLI11_INLINE void App::_parse(std::vector<std::string> &args) {
1499 _trigger_pre_parse(args.size());
1500 bool positional_only = false;
1501
1502 while(!args.empty()) {
1503 if(!_parse_single(args, positional_only)) {
1504 break;
1505 }
1506 }
1507
1508 if(parent_ == nullptr) {
1509 _process();
1510
1511 // Throw error if any items are left over (depending on settings)
1512 _process_extras(args);
1513
1514 // Convert missing (pairs) to extras (string only) ready for processing in another app
1515 args = remaining_for_passthrough(false);
1516 } else if(parse_complete_callback_) {
1517 _process_callbacks(CallbackPriority::FirstPreHelp);
1518 _process_help_flags(CallbackPriority::First);
1519 _process_callbacks(CallbackPriority::First);
1520 _process_env();
1521 _process_callbacks(CallbackPriority::PreRequirementsCheckPreHelp);
1522 _process_help_flags(CallbackPriority::PreRequirementsCheck);
1523 _process_callbacks(CallbackPriority::PreRequirementsCheck);
1525 _process_callbacks(CallbackPriority::NormalPreHelp);
1526 _process_help_flags(CallbackPriority::Normal);
1527 _process_callbacks(CallbackPriority::Normal);
1528 _process_callbacks(CallbackPriority::LastPreHelp);
1529 _process_help_flags(CallbackPriority::Last);
1530 _process_callbacks(CallbackPriority::Last);
1531 run_callback(false, true);
1532 }
1533}
1534
1535CLI11_INLINE void App::_parse(std::vector<std::string> &&args) {
1536 // this can only be called by the top level in which case parent == nullptr by definition
1537 // operation is simplified
1539 _trigger_pre_parse(args.size());
1540 bool positional_only = false;
1541
1542 while(!args.empty()) {
1543 _parse_single(args, positional_only);
1544 }
1545 _process();
1546
1547 // Throw error if any items are left over (depending on settings)
1549}
1550
1551CLI11_INLINE void App::_parse_stream(std::istream &input) {
1552 auto values = config_formatter_->from_config(input);
1553 _parse_config(values);
1555 _trigger_pre_parse(values.size());
1556 _process();
1557
1558 // Throw error if any items are left over (depending on settings)
1560}
1561
1562CLI11_INLINE void App::_parse_config(const std::vector<ConfigItem> &args) {
1563 for(const ConfigItem &item : args) {
1564 if(!_parse_single_config(item) && allow_config_extras_ == config_extras_mode::error)
1565 throw ConfigError::Extras(item.fullname());
1566 }
1567}
1568
1569CLI11_INLINE bool
1570App::_add_flag_like_result(Option *op, const ConfigItem &item, const std::vector<std::string> &inputs) {
1571 if(item.inputs.size() <= 1) {
1572 // Flag parsing
1573 auto res = config_formatter_->to_flag(item);
1574 bool converted{false};
1575 if(op->get_disable_flag_override()) {
1576 auto val = detail::to_flag_value(res);
1577 if(val == 1) {
1578 res = op->get_flag_value(item.name, "{}");
1579 converted = true;
1580 }
1581 }
1582
1583 if(!converted) {
1584 errno = 0;
1585 if(res != "{}" || op->get_expected_max() <= 1) {
1586 res = op->get_flag_value(item.name, res);
1587 }
1588 }
1589
1590 op->add_result(res);
1591 return true;
1592 }
1593 if(static_cast<int>(inputs.size()) > op->get_items_expected_max() &&
1594 op->get_multi_option_policy() != MultiOptionPolicy::TakeAll &&
1595 op->get_multi_option_policy() != MultiOptionPolicy::Join) {
1596 if(op->get_items_expected_max() > 1) {
1597 throw ArgumentMismatch::AtMost(item.fullname(), op->get_items_expected_max(), inputs.size());
1598 }
1599
1600 if(!op->get_disable_flag_override()) {
1601 throw ConversionError::TooManyInputsFlag(item.fullname());
1602 }
1603 // if the disable flag override is set then we must have the flag values match a known flag value
1604 // this is true regardless of the output value, so an array input is possible and must be accounted for
1605 for(const auto &res : inputs) {
1606 bool valid_value{false};
1607 if(op->default_flag_values_.empty()) {
1608 if(res == "true" || res == "false" || res == "1" || res == "0") {
1609 valid_value = true;
1610 }
1611 } else {
1612 for(const auto &valid_res : op->default_flag_values_) {
1613 if(valid_res.second == res) {
1614 valid_value = true;
1615 break;
1616 }
1617 }
1618 }
1619
1620 if(valid_value) {
1621 op->add_result(res);
1622 } else {
1623 throw InvalidError("invalid flag argument given");
1624 }
1625 }
1626 return true;
1627 }
1628 return false;
1629}
1630
1631CLI11_INLINE bool App::_parse_single_config(const ConfigItem &item, std::size_t level) {
1632
1633 if(level < item.parents.size()) {
1634 auto *subcom = get_subcommand_no_throw(item.parents.at(level));
1635 return (subcom != nullptr) ? subcom->_parse_single_config(item, level + 1) : false;
1636 }
1637 // check for section open
1638 if(item.name == "++") {
1639 if(configurable_) {
1642 if(parent_ != nullptr) {
1643 parent_->parsed_subcommands_.push_back(this);
1644 }
1645 }
1646 return true;
1647 }
1648 // check for section close
1649 if(item.name == "--") {
1651 _process_callbacks(CallbackPriority::FirstPreHelp);
1652 _process_callbacks(CallbackPriority::First);
1653 _process_callbacks(CallbackPriority::PreRequirementsCheckPreHelp);
1654 _process_callbacks(CallbackPriority::PreRequirementsCheck);
1656 _process_callbacks(CallbackPriority::NormalPreHelp);
1657 _process_callbacks(CallbackPriority::Normal);
1658 _process_callbacks(CallbackPriority::LastPreHelp);
1659 _process_callbacks(CallbackPriority::Last);
1660 run_callback();
1661 }
1662 return true;
1663 }
1664 Option *op = get_option_no_throw("--" + item.name);
1665 if(op == nullptr) {
1666 if(item.name.size() == 1) {
1667 op = get_option_no_throw("-" + item.name);
1668 }
1669 if(op == nullptr) {
1670 op = get_option_no_throw(item.name);
1671 }
1672 } else if(!op->get_configurable()) {
1673 if(item.name.size() == 1) {
1674 auto *testop = get_option_no_throw("-" + item.name);
1675 if(testop != nullptr && testop->get_configurable()) {
1676 op = testop;
1677 }
1678 }
1679 }
1680 if(op == nullptr || !op->get_configurable()) {
1681 std::string iname = item.name;
1682 auto options = get_options([iname](const CLI::Option *opt) {
1683 return (opt->get_configurable() &&
1684 (opt->check_name(iname) || opt->check_lname(iname) || opt->check_sname(iname)));
1685 });
1686 if(!options.empty()) {
1687 op = options[0];
1688 }
1689 }
1690 if(op == nullptr) {
1691 // If the option was not present
1692 if(get_allow_config_extras() == config_extras_mode::capture) {
1693 // Should we worry about classifying the extras properly?
1694 missing_.emplace_back(detail::Classifier::NONE, item.fullname());
1695 for(const auto &input : item.inputs) {
1696 missing_.emplace_back(detail::Classifier::NONE, input);
1697 }
1698 }
1699 return false;
1700 }
1701
1702 if(!op->get_configurable()) {
1703 if(get_allow_config_extras() == config_extras_mode::ignore_all) {
1704 return false;
1705 }
1706 throw ConfigError::NotConfigurable(item.fullname());
1707 }
1708 if(op->empty()) {
1709 std::vector<std::string> buffer; // a buffer to use for copying and modifying inputs in a few cases
1710 bool useBuffer{false};
1711 if(item.multiline) {
1712 if(!op->get_inject_separator()) {
1713 buffer = item.inputs;
1714 buffer.erase(std::remove(buffer.begin(), buffer.end(), "%%"), buffer.end());
1715 useBuffer = true;
1716 }
1717 }
1718 const std::vector<std::string> &inputs = (useBuffer) ? buffer : item.inputs;
1719 if(op->get_expected_min() == 0) {
1720 if(_add_flag_like_result(op, item, inputs)) {
1721 return true;
1722 }
1723 }
1724 op->add_result(inputs);
1725 op->run_callback();
1726 }
1727
1728 return true;
1729}
1730
1731CLI11_INLINE bool App::_parse_single(std::vector<std::string> &args, bool &positional_only) {
1732 bool retval = true;
1733 detail::Classifier classifier = positional_only ? detail::Classifier::NONE : _recognize(args.back());
1734 switch(classifier) {
1735 case detail::Classifier::POSITIONAL_MARK:
1736 args.pop_back();
1737 positional_only = true;
1738 if((!_has_remaining_positionals()) && (parent_ != nullptr)) {
1739 retval = false;
1740 } else {
1741 _move_to_missing(classifier, "--");
1742 }
1743 break;
1744 case detail::Classifier::SUBCOMMAND_TERMINATOR:
1745 // treat this like a positional mark if in the parent app
1746 args.pop_back();
1747 retval = false;
1748 break;
1749 case detail::Classifier::SUBCOMMAND:
1750 retval = _parse_subcommand(args);
1751 break;
1752 case detail::Classifier::LONG:
1753 case detail::Classifier::SHORT:
1754 case detail::Classifier::WINDOWS_STYLE:
1755 // If already parsed a subcommand, don't accept options_
1756 retval = _parse_arg(args, classifier, false);
1757 break;
1758 case detail::Classifier::NONE:
1759 // Probably a positional or something for a parent (sub)command
1760 retval = _parse_positional(args, false);
1761 if(retval && positionals_at_end_) {
1762 positional_only = true;
1763 }
1764 break;
1765 // LCOV_EXCL_START
1766 default:
1767 throw HorribleError("unrecognized classifier (you should not see this!)");
1768 // LCOV_EXCL_STOP
1769 }
1770 return retval;
1771}
1772
1773CLI11_NODISCARD CLI11_INLINE std::size_t App::_count_remaining_positionals(bool required_only) const {
1774 std::size_t retval = 0;
1775 for(const Option_p &opt : options_) {
1776 if(opt->get_positional() && (!required_only || opt->get_required())) {
1777 if(opt->get_items_expected_min() > 0 && static_cast<int>(opt->count()) < opt->get_items_expected_min()) {
1778 retval += static_cast<std::size_t>(opt->get_items_expected_min()) - opt->count();
1779 }
1780 }
1781 }
1782 return retval;
1783}
1784
1785CLI11_NODISCARD CLI11_INLINE bool App::_has_remaining_positionals() const {
1786 for(const Option_p &opt : options_) {
1787 if(opt->get_positional() && ((static_cast<int>(opt->count()) < opt->get_items_expected_min()))) {
1788 return true;
1789 }
1790 }
1791
1792 return false;
1793}
1794
1795CLI11_INLINE bool App::_parse_positional(std::vector<std::string> &args, bool haltOnSubcommand) {
1796
1797 const std::string &positional = args.back();
1798 Option *posOpt{nullptr};
1799
1801 // deal with the case of required arguments at the end which should take precedence over other arguments
1802 auto arg_rem = args.size();
1803 auto remreq = _count_remaining_positionals(true);
1804 if(arg_rem <= remreq) {
1805 for(const Option_p &opt : options_) {
1806 if(opt->get_positional() && opt->required_) {
1807 if(static_cast<int>(opt->count()) < opt->get_items_expected_min()) {
1809 std::string pos = positional;
1810 pos = opt->_validate(pos, 0);
1811 if(!pos.empty()) {
1812 continue;
1813 }
1814 }
1815 posOpt = opt.get();
1816 break;
1817 }
1818 }
1819 }
1820 }
1821 }
1822 if(posOpt == nullptr) {
1823 for(const Option_p &opt : options_) {
1824 // Eat options, one by one, until done
1825 if(opt->get_positional() &&
1826 (static_cast<int>(opt->count()) < opt->get_items_expected_max() || opt->get_allow_extra_args())) {
1828 std::string pos = positional;
1829 pos = opt->_validate(pos, 0);
1830 if(!pos.empty()) {
1831 continue;
1832 }
1833 }
1834 posOpt = opt.get();
1835 break;
1836 }
1837 }
1838 }
1839 if(posOpt != nullptr) {
1840 parse_order_.push_back(posOpt);
1841 if(posOpt->get_inject_separator()) {
1842 if(!posOpt->results().empty() && !posOpt->results().back().empty()) {
1843 posOpt->add_result(std::string{});
1844 }
1845 }
1846 results_t prev;
1847 if(posOpt->get_trigger_on_parse() && posOpt->current_option_state_ == Option::option_state::callback_run) {
1848 prev = posOpt->results();
1849 posOpt->clear();
1850 }
1851 if(posOpt->get_expected_min() == 0) {
1852 ConfigItem item;
1853 item.name = posOpt->pname_;
1854 item.inputs.push_back(positional);
1855 // input is singular guaranteed to return true in that case
1856 _add_flag_like_result(posOpt, item, item.inputs);
1857 } else {
1858 posOpt->add_result(positional);
1859 }
1860
1861 if(posOpt->get_trigger_on_parse()) {
1862 if(!posOpt->empty()) {
1863 posOpt->run_callback();
1864 } else {
1865 if(!prev.empty()) {
1866 posOpt->add_result(prev);
1867 }
1868 }
1869 }
1870
1871 args.pop_back();
1872 return true;
1873 }
1874
1875 for(auto &subc : subcommands_) {
1876 if((subc->name_.empty()) && (!subc->disabled_)) {
1877 if(subc->_parse_positional(args, false)) {
1878 if(!subc->pre_parse_called_) {
1879 subc->_trigger_pre_parse(args.size());
1880 }
1881 return true;
1882 }
1883 }
1884 }
1885 // let the parent deal with it if possible
1886 if(parent_ != nullptr && fallthrough_) {
1887 return _get_fallthrough_parent()->_parse_positional(args, static_cast<bool>(parse_complete_callback_));
1888 }
1890 auto *com = _find_subcommand(args.back(), true, false);
1891 if(com != nullptr && (require_subcommand_max_ == 0 || require_subcommand_max_ > parsed_subcommands_.size())) {
1892 if(haltOnSubcommand) {
1893 return false;
1894 }
1895 args.pop_back();
1896 com->_parse(args);
1897 return true;
1898 }
1902 auto *parent_app = (parent_ != nullptr) ? _get_fallthrough_parent() : this;
1903 com = parent_app->_find_subcommand(args.back(), true, false);
1904 if(com != nullptr && (com->parent_->require_subcommand_max_ == 0 ||
1905 com->parent_->require_subcommand_max_ > com->parent_->parsed_subcommands_.size())) {
1906 return false;
1907 }
1908 }
1910 std::vector<std::string> rargs;
1911 rargs.resize(args.size());
1912 std::reverse_copy(args.begin(), args.end(), rargs.begin());
1913 throw CLI::ExtrasError(name_, rargs);
1914 }
1916 if(parent_ != nullptr && name_.empty()) {
1917 return false;
1918 }
1920 _move_to_missing(detail::Classifier::NONE, positional);
1921 args.pop_back();
1922 if(prefix_command_) {
1923 while(!args.empty()) {
1924 _move_to_missing(detail::Classifier::NONE, args.back());
1925 args.pop_back();
1926 }
1927 }
1928
1929 return true;
1930}
1931
1932CLI11_NODISCARD CLI11_INLINE App *
1933App::_find_subcommand(const std::string &subc_name, bool ignore_disabled, bool ignore_used) const noexcept {
1934 App *bcom{nullptr};
1935 for(const App_p &com : subcommands_) {
1936 if(com->disabled_ && ignore_disabled)
1937 continue;
1938 if(com->get_name().empty()) {
1939 auto *subc = com->_find_subcommand(subc_name, ignore_disabled, ignore_used);
1940 if(subc != nullptr) {
1941 if(bcom != nullptr) {
1942 return nullptr;
1943 }
1944 bcom = subc;
1945 if(!allow_prefix_matching_) {
1946 return bcom;
1947 }
1948 }
1949 }
1950 auto res = com->check_name_detail(subc_name);
1951 if(res != NameMatch::none) {
1952 if((!*com) || !ignore_used) {
1953 if(res == NameMatch::exact) {
1954 return com.get();
1955 }
1956 if(bcom != nullptr) {
1957 return nullptr;
1958 }
1959 bcom = com.get();
1960 if(!allow_prefix_matching_) {
1961 return bcom;
1962 }
1963 }
1964 }
1965 }
1966 return bcom;
1967}
1968
1969CLI11_INLINE bool App::_parse_subcommand(std::vector<std::string> &args) {
1970 if(_count_remaining_positionals(/* required */ true) > 0) {
1971 _parse_positional(args, false);
1972 return true;
1973 }
1974 auto *com = _find_subcommand(args.back(), true, true);
1975 if(com == nullptr) {
1976 // the main way to get here is using .notation
1977 auto dotloc = args.back().find_first_of('.');
1978 if(dotloc != std::string::npos) {
1979 com = _find_subcommand(args.back().substr(0, dotloc), true, true);
1980 if(com != nullptr) {
1981 args.back() = args.back().substr(dotloc + 1);
1982 args.push_back(com->get_display_name());
1983 }
1984 }
1985 }
1986 if(com != nullptr) {
1987 args.pop_back();
1988 if(!com->silent_) {
1989 parsed_subcommands_.push_back(com);
1990 }
1991 com->_parse(args);
1992 auto *parent_app = com->parent_;
1993 while(parent_app != this) {
1994 parent_app->_trigger_pre_parse(args.size());
1995 if(!com->silent_) {
1996 parent_app->parsed_subcommands_.push_back(com);
1997 }
1998 parent_app = parent_app->parent_;
1999 }
2000 return true;
2001 }
2002
2003 if(parent_ == nullptr)
2004 throw HorribleError("Subcommand " + args.back() + " missing");
2005 return false;
2006}
2007
2008CLI11_INLINE bool
2009App::_parse_arg(std::vector<std::string> &args, detail::Classifier current_type, bool local_processing_only) {
2010
2011 std::string current = args.back();
2012
2013 std::string arg_name;
2014 std::string value;
2015 std::string rest;
2016
2017 switch(current_type) {
2018 case detail::Classifier::LONG:
2019 if(!detail::split_long(current, arg_name, value))
2020 throw HorribleError("Long parsed but missing (you should not see this):" + args.back());
2021 break;
2022 case detail::Classifier::SHORT:
2023 if(!detail::split_short(current, arg_name, rest))
2024 throw HorribleError("Short parsed but missing! You should not see this");
2025 break;
2026 case detail::Classifier::WINDOWS_STYLE:
2027 if(!detail::split_windows_style(current, arg_name, value))
2028 throw HorribleError("windows option parsed but missing! You should not see this");
2029 break;
2030 case detail::Classifier::SUBCOMMAND:
2031 case detail::Classifier::SUBCOMMAND_TERMINATOR:
2032 case detail::Classifier::POSITIONAL_MARK:
2033 case detail::Classifier::NONE:
2034 default:
2035 throw HorribleError("parsing got called with invalid option! You should not see this");
2036 }
2037
2038 auto op_ptr = std::find_if(std::begin(options_), std::end(options_), [arg_name, current_type](const Option_p &opt) {
2039 if(current_type == detail::Classifier::LONG)
2040 return opt->check_lname(arg_name);
2041 if(current_type == detail::Classifier::SHORT)
2042 return opt->check_sname(arg_name);
2043 // this will only get called for detail::Classifier::WINDOWS_STYLE
2044 return opt->check_lname(arg_name) || opt->check_sname(arg_name);
2045 });
2046
2047 // Option not found
2048 while(op_ptr == std::end(options_)) {
2049 // using while so we can break
2050 for(auto &subc : subcommands_) {
2051 if(subc->name_.empty() && !subc->disabled_) {
2052 if(subc->_parse_arg(args, current_type, local_processing_only)) {
2053 if(!subc->pre_parse_called_) {
2054 subc->_trigger_pre_parse(args.size());
2055 }
2056 return true;
2057 }
2058 }
2059 }
2060 if(allow_non_standard_options_ && current_type == detail::Classifier::SHORT && current.size() > 2) {
2061 std::string narg_name;
2062 std::string nvalue;
2063 detail::split_long(std::string{'-'} + current, narg_name, nvalue);
2064 op_ptr = std::find_if(std::begin(options_), std::end(options_), [narg_name](const Option_p &opt) {
2065 return opt->check_sname(narg_name);
2066 });
2067 if(op_ptr != std::end(options_)) {
2068 arg_name = narg_name;
2069 value = nvalue;
2070 rest.clear();
2071 break;
2072 }
2073 }
2074
2075 // don't capture missing if this is a nameless subcommand and nameless subcommands can't fallthrough
2076 if(parent_ != nullptr && name_.empty()) {
2077 return false;
2078 }
2079
2080 // now check for '.' notation of subcommands
2081 auto dotloc = arg_name.find_first_of('.', 1);
2082 if(dotloc != std::string::npos && dotloc < arg_name.size() - 1) {
2083 // using dot notation is equivalent to single argument subcommand
2084 auto *sub = _find_subcommand(arg_name.substr(0, dotloc), true, false);
2085 if(sub != nullptr) {
2086 std::string v = args.back();
2087 args.pop_back();
2088 arg_name = arg_name.substr(dotloc + 1);
2089 if(arg_name.size() > 1) {
2090 args.push_back(std::string("--") + v.substr(dotloc + 3));
2091 current_type = detail::Classifier::LONG;
2092 } else {
2093 auto nval = v.substr(dotloc + 2);
2094 nval.front() = '-';
2095 if(nval.size() > 2) {
2096 // '=' not allowed in short form arguments
2097 args.push_back(nval.substr(3));
2098 nval.resize(2);
2099 }
2100 args.push_back(nval);
2101 current_type = detail::Classifier::SHORT;
2102 }
2103 std::string dummy1, dummy2;
2104 bool val = false;
2105 if((current_type == detail::Classifier::SHORT && detail::valid_first_char(args.back()[1])) ||
2106 detail::split_long(args.back(), dummy1, dummy2)) {
2107 val = sub->_parse_arg(args, current_type, true);
2108 }
2109
2110 if(val) {
2111 if(!sub->silent_) {
2112 parsed_subcommands_.push_back(sub);
2113 }
2114 // deal with preparsing
2116 _trigger_pre_parse(args.size());
2117 // run the parse complete callback since the subcommand processing is now complete
2118 if(sub->parse_complete_callback_) {
2119 sub->_process_callbacks(CallbackPriority::FirstPreHelp);
2120 sub->_process_help_flags(CallbackPriority::First);
2121 sub->_process_callbacks(CallbackPriority::First);
2122 sub->_process_env();
2123 sub->_process_callbacks(CallbackPriority::PreRequirementsCheckPreHelp);
2124 sub->_process_help_flags(CallbackPriority::PreRequirementsCheck);
2125 sub->_process_callbacks(CallbackPriority::PreRequirementsCheck);
2126 sub->_process_requirements();
2127 sub->_process_callbacks(CallbackPriority::NormalPreHelp);
2128 sub->_process_help_flags(CallbackPriority::Normal);
2129 sub->_process_callbacks(CallbackPriority::Normal);
2130 sub->_process_callbacks(CallbackPriority::LastPreHelp);
2131 sub->_process_help_flags(CallbackPriority::Last);
2132 sub->_process_callbacks(CallbackPriority::Last);
2133 sub->run_callback(false, true);
2134 }
2135 return true;
2136 }
2137 args.pop_back();
2138 args.push_back(v);
2139 }
2140 }
2141 if(local_processing_only) {
2142 return false;
2143 }
2144 // If a subcommand, try the main command
2145 if(parent_ != nullptr && fallthrough_)
2146 return _get_fallthrough_parent()->_parse_arg(args, current_type, false);
2147
2148 // Otherwise, add to missing
2149 args.pop_back();
2150 _move_to_missing(current_type, current);
2151 return true;
2152 }
2153
2154 args.pop_back();
2155
2156 // Get a reference to the pointer to make syntax bearable
2157 Option_p &op = *op_ptr;
2159 if(op->get_inject_separator()) {
2160 if(!op->results().empty() && !op->results().back().empty()) {
2161 op->add_result(std::string{});
2162 }
2163 }
2164 if(op->get_trigger_on_parse() && op->current_option_state_ == Option::option_state::callback_run) {
2165 op->clear();
2166 }
2167 int min_num = (std::min)(op->get_type_size_min(), op->get_items_expected_min());
2168 int max_num = op->get_items_expected_max();
2169 // check container like options to limit the argument size to a single type if the allow_extra_flags argument is
2170 // set. 16 is somewhat arbitrary (needs to be at least 4)
2171 if(max_num >= detail::expected_max_vector_size / 16 && !op->get_allow_extra_args()) {
2172 auto tmax = op->get_type_size_max();
2173 max_num = detail::checked_multiply(tmax, op->get_expected_min()) ? tmax : detail::expected_max_vector_size;
2174 }
2175 // Make sure we always eat the minimum for unlimited vectors
2176 int collected = 0; // total number of arguments collected
2177 int result_count = 0; // local variable for number of results in a single arg string
2178 // deal with purely flag like things
2179 if(max_num == 0) {
2180 auto res = op->get_flag_value(arg_name, value);
2181 op->add_result(res);
2182 parse_order_.push_back(op.get());
2183 } else if(!value.empty()) { // --this=value
2184 op->add_result(value, result_count);
2185 parse_order_.push_back(op.get());
2186 collected += result_count;
2187 // -Trest
2188 } else if(!rest.empty()) {
2189 op->add_result(rest, result_count);
2190 parse_order_.push_back(op.get());
2191 rest = "";
2192 collected += result_count;
2193 }
2194
2195 // gather the minimum number of arguments
2196 while(min_num > collected && !args.empty()) {
2197 std::string current_ = args.back();
2198 args.pop_back();
2199 op->add_result(current_, result_count);
2200 parse_order_.push_back(op.get());
2201 collected += result_count;
2202 }
2203
2204 if(min_num > collected) { // if we have run out of arguments and the minimum was not met
2205 throw ArgumentMismatch::TypedAtLeast(op->get_name(), min_num, op->get_type_name());
2206 }
2207
2208 // now check for optional arguments
2209 if(max_num > collected || op->get_allow_extra_args()) { // we allow optional arguments
2210 auto remreqpos = _count_remaining_positionals(true);
2211 // we have met the minimum now optionally check up to the maximum
2212 while((collected < max_num || op->get_allow_extra_args()) && !args.empty() &&
2213 _recognize(args.back(), false) == detail::Classifier::NONE) {
2214 // If any required positionals remain, don't keep eating
2215 if(remreqpos >= args.size()) {
2216 break;
2217 }
2219 std::string arg = args.back();
2220 arg = op->_validate(arg, 0);
2221 if(!arg.empty()) {
2222 break;
2223 }
2224 }
2225 op->add_result(args.back(), result_count);
2226 parse_order_.push_back(op.get());
2227 args.pop_back();
2228 collected += result_count;
2229 }
2230
2231 // Allow -- to end an unlimited list and "eat" it
2232 if(!args.empty() && _recognize(args.back()) == detail::Classifier::POSITIONAL_MARK)
2233 args.pop_back();
2234 // optional flag that didn't receive anything now get the default value
2235 if(min_num == 0 && max_num > 0 && collected == 0) {
2236 auto res = op->get_flag_value(arg_name, std::string{});
2237 op->add_result(res);
2238 parse_order_.push_back(op.get());
2239 }
2240 }
2241 // if we only partially completed a type then add an empty string if allowed for later processing
2242 if(min_num > 0 && (collected % op->get_type_size_max()) != 0) {
2243 if(op->get_type_size_max() != op->get_type_size_min()) {
2244 op->add_result(std::string{});
2245 } else {
2246 throw ArgumentMismatch::PartialType(op->get_name(), op->get_type_size_min(), op->get_type_name());
2247 }
2248 }
2249 if(op->get_trigger_on_parse()) {
2250 op->run_callback();
2251 }
2252 if(!rest.empty()) {
2253 rest = "-" + rest;
2254 args.push_back(rest);
2255 }
2256 return true;
2257}
2258
2259CLI11_INLINE void App::_trigger_pre_parse(std::size_t remaining_args) {
2260 if(!pre_parse_called_) {
2261 pre_parse_called_ = true;
2263 pre_parse_callback_(remaining_args);
2264 }
2265 } else if(immediate_callback_) {
2266 if(!name_.empty()) {
2267 auto pcnt = parsed_;
2268 missing_t extras = std::move(missing_);
2269 clear();
2270 parsed_ = pcnt;
2271 pre_parse_called_ = true;
2272 missing_ = std::move(extras);
2273 }
2274 }
2275}
2276
2278 if(parent_ == nullptr) {
2279 throw(HorribleError("No Valid parent"));
2280 }
2281 auto *fallthrough_parent = parent_;
2282 while((fallthrough_parent->parent_ != nullptr) && (fallthrough_parent->get_name().empty())) {
2283 fallthrough_parent = fallthrough_parent->parent_;
2284 }
2285 return fallthrough_parent;
2286}
2287
2288CLI11_NODISCARD CLI11_INLINE const std::string &App::_compare_subcommand_names(const App &subcom,
2289 const App &base) const {
2290 static const std::string estring;
2291 if(subcom.disabled_) {
2292 return estring;
2293 }
2294 for(const auto &subc : base.subcommands_) {
2295 if(subc.get() != &subcom) {
2296 if(subc->disabled_) {
2297 continue;
2298 }
2299 if(!subcom.get_name().empty()) {
2300 if(subc->check_name(subcom.get_name())) {
2301 return subcom.get_name();
2302 }
2303 }
2304 if(!subc->get_name().empty()) {
2305 if(subcom.check_name(subc->get_name())) {
2306 return subc->get_name();
2307 }
2308 }
2309 for(const auto &les : subcom.aliases_) {
2310 if(subc->check_name(les)) {
2311 return les;
2312 }
2313 }
2314 // this loop is needed in case of ignore_underscore or ignore_case on one but not the other
2315 for(const auto &les : subc->aliases_) {
2316 if(subcom.check_name(les)) {
2317 return les;
2318 }
2319 }
2320 // if the subcommand is an option group we need to check deeper
2321 if(subc->get_name().empty()) {
2322 const auto &cmpres = _compare_subcommand_names(subcom, *subc);
2323 if(!cmpres.empty()) {
2324 return cmpres;
2325 }
2326 }
2327 // if the test subcommand is an option group we need to check deeper
2328 if(subcom.get_name().empty()) {
2329 const auto &cmpres = _compare_subcommand_names(*subc, subcom);
2330 if(!cmpres.empty()) {
2331 return cmpres;
2332 }
2333 }
2334 }
2335 }
2336 return estring;
2337}
2338
2339CLI11_INLINE void App::_move_to_missing(detail::Classifier val_type, const std::string &val) {
2340 if(allow_extras_ || subcommands_.empty()) {
2341 missing_.emplace_back(val_type, val);
2342 return;
2343 }
2344 // allow extra arguments to be places in an option group if it is allowed there
2345 for(auto &subc : subcommands_) {
2346 if(subc->name_.empty() && subc->allow_extras_) {
2347 subc->missing_.emplace_back(val_type, val);
2348 return;
2349 }
2350 }
2351 // if we haven't found any place to put them yet put them in missing
2352 missing_.emplace_back(val_type, val);
2353}
2354
2355CLI11_INLINE void App::_move_option(Option *opt, App *app) {
2356 if(opt == nullptr) {
2357 throw OptionNotFound("the option is NULL");
2358 }
2359 // verify that the give app is actually a subcommand
2360 bool found = false;
2361 for(auto &subc : subcommands_) {
2362 if(app == subc.get()) {
2363 found = true;
2364 }
2365 }
2366 if(!found) {
2367 throw OptionNotFound("The Given app is not a subcommand");
2368 }
2369
2370 if((help_ptr_ == opt) || (help_all_ptr_ == opt))
2371 throw OptionAlreadyAdded("cannot move help options");
2372
2373 if(config_ptr_ == opt)
2374 throw OptionAlreadyAdded("cannot move config file options");
2375
2376 auto iterator =
2377 std::find_if(std::begin(options_), std::end(options_), [opt](const Option_p &v) { return v.get() == opt; });
2378 if(iterator != std::end(options_)) {
2379 const auto &opt_p = *iterator;
2380 if(std::find_if(std::begin(app->options_), std::end(app->options_), [&opt_p](const Option_p &v) {
2381 return (*v == *opt_p);
2382 }) == std::end(app->options_)) {
2383 // only erase after the insertion was successful
2384 app->options_.push_back(std::move(*iterator));
2385 options_.erase(iterator);
2386 } else {
2387 throw OptionAlreadyAdded("option was not located: " + opt->get_name());
2388 }
2389 } else {
2390 throw OptionNotFound("could not locate the given Option");
2391 }
2392}
2393
2394CLI11_INLINE void TriggerOn(App *trigger_app, App *app_to_enable) {
2395 app_to_enable->enabled_by_default(false);
2396 app_to_enable->disabled_by_default();
2397 trigger_app->preparse_callback([app_to_enable](std::size_t) { app_to_enable->disabled(false); });
2398}
2399
2400CLI11_INLINE void TriggerOn(App *trigger_app, std::vector<App *> apps_to_enable) {
2401 for(auto &app : apps_to_enable) {
2402 app->enabled_by_default(false);
2403 app->disabled_by_default();
2404 }
2405
2406 trigger_app->preparse_callback([apps_to_enable](std::size_t) {
2407 for(const auto &app : apps_to_enable) {
2408 app->disabled(false);
2409 }
2410 });
2411}
2412
2413CLI11_INLINE void TriggerOff(App *trigger_app, App *app_to_enable) {
2414 app_to_enable->disabled_by_default(false);
2415 app_to_enable->enabled_by_default();
2416 trigger_app->preparse_callback([app_to_enable](std::size_t) { app_to_enable->disabled(); });
2417}
2418
2419CLI11_INLINE void TriggerOff(App *trigger_app, std::vector<App *> apps_to_enable) {
2420 for(auto &app : apps_to_enable) {
2421 app->disabled_by_default(false);
2422 app->enabled_by_default();
2423 }
2424
2425 trigger_app->preparse_callback([apps_to_enable](std::size_t) {
2426 for(const auto &app : apps_to_enable) {
2427 app->disabled();
2428 }
2429 });
2430}
2431
2432CLI11_INLINE void deprecate_option(Option *opt, const std::string &replacement) {
2433 Validator deprecate_warning{[opt, replacement](std::string &) {
2434 std::cout << opt->get_name() << " is deprecated please use '" << replacement
2435 << "' instead\n";
2436 return std::string();
2437 },
2438 "DEPRECATED"};
2439 deprecate_warning.application_index(0);
2440 opt->check(deprecate_warning);
2441 if(!replacement.empty()) {
2442 opt->description(opt->get_description() + " DEPRECATED: please use '" + replacement + "' instead");
2443 }
2444}
2445
2446CLI11_INLINE void retire_option(App *app, Option *opt) {
2447 App temp;
2448 auto *option_copy = temp.add_option(opt->get_name(false, true))
2449 ->type_size(opt->get_type_size_min(), opt->get_type_size_max())
2450 ->expected(opt->get_expected_min(), opt->get_expected_max())
2451 ->allow_extra_args(opt->get_allow_extra_args());
2452
2453 app->remove_option(opt);
2454 auto *opt2 = app->add_option(option_copy->get_name(false, true), "option has been retired and has no effect");
2455 opt2->type_name("RETIRED")
2456 ->default_str("RETIRED")
2457 ->type_size(option_copy->get_type_size_min(), option_copy->get_type_size_max())
2458 ->expected(option_copy->get_expected_min(), option_copy->get_expected_max())
2459 ->allow_extra_args(option_copy->get_allow_extra_args());
2460
2461 // LCOV_EXCL_START
2462 // something odd with coverage on new compilers
2463 Validator retired_warning{[opt2](std::string &) {
2464 std::cout << "WARNING " << opt2->get_name() << " is retired and has no effect\n";
2465 return std::string();
2466 },
2467 ""};
2468 // LCOV_EXCL_STOP
2469 retired_warning.application_index(0);
2470 opt2->check(retired_warning);
2471}
2472
2473CLI11_INLINE void retire_option(App &app, Option *opt) { retire_option(&app, opt); }
2474
2475CLI11_INLINE void retire_option(App *app, const std::string &option_name) {
2476
2477 auto *opt = app->get_option_no_throw(option_name);
2478 if(opt != nullptr) {
2479 retire_option(app, opt);
2480 return;
2481 }
2482 auto *opt2 = app->add_option(option_name, "option has been retired and has no effect")
2483 ->type_name("RETIRED")
2484 ->expected(0, 1)
2485 ->default_str("RETIRED");
2486 // LCOV_EXCL_START
2487 // something odd with coverage on new compilers
2488 Validator retired_warning{[opt2](std::string &) {
2489 std::cout << "WARNING " << opt2->get_name() << " is retired and has no effect\n";
2490 return std::string();
2491 },
2492 ""};
2493 // LCOV_EXCL_STOP
2494 retired_warning.application_index(0);
2495 opt2->check(retired_warning);
2496}
2497
2498CLI11_INLINE void retire_option(App &app, const std::string &option_name) { retire_option(&app, option_name); }
2499
2500namespace FailureMessage {
2501
2502CLI11_INLINE std::string simple(const App *app, const Error &e) {
2503 std::string header = std::string(e.what()) + "\n";
2504 std::vector<std::string> names;
2505
2506 // Collect names
2507 if(app->get_help_ptr() != nullptr)
2508 names.push_back(app->get_help_ptr()->get_name());
2509
2510 if(app->get_help_all_ptr() != nullptr)
2511 names.push_back(app->get_help_all_ptr()->get_name());
2512
2513 // If any names found, suggest those
2514 if(!names.empty())
2515 header += "Run with " + detail::join(names, " or ") + " for more information.\n";
2516
2517 return header;
2518}
2519
2520CLI11_INLINE std::string help(const App *app, const Error &e) {
2521 std::string header = std::string("ERROR: ") + e.get_name() + ": " + e.what() + "\n";
2522 header += app->help();
2523 return header;
2524}
2525
2526} // namespace FailureMessage
2527
2528// [CLI11:app_inl_hpp:end]
2529} // namespace CLI
Creates a command line program, with very few defaults.
Definition App.hpp:98
CLI11_NODISCARD Option * get_option_no_throw(std::string option_name) noexcept
Get an option by name (noexcept non-const version)
Definition App_inl.hpp:874
bool subcommand_fallthrough_
Allow subcommands to fallthrough, so that parent commands can trigger other subcommands after subcomm...
Definition App.hpp:240
int exit(const Error &e, std::ostream &out=std::cout, std::ostream &err=std::cerr) const
Print a nice error message and return the exit code.
Definition App_inl.hpp:704
CLI11_NODISCARD std::string help(std::string prev="", AppFormatMode mode=AppFormatMode::Normal) const
Definition App_inl.hpp:800
CLI11_NODISCARD std::size_t remaining_size(bool recurse=false) const
This returns the number of remaining options, minus the – separator.
Definition App_inl.hpp:1014
CLI11_NODISCARD bool _has_remaining_positionals() const
Count the required remaining positional arguments.
Definition App_inl.hpp:1785
CLI11_NODISCARD detail::Classifier _recognize(const std::string &current, bool ignore_used_subcommands=true) const
Selects a Classifier enum based on the type of the current argument.
Definition App_inl.hpp:1127
App * immediate_callback(bool immediate=true)
Set the subcommand callback to be executed immediately on subcommand completion.
Definition App_inl.hpp:122
Option * set_help_flag(std::string flag_name="", const std::string &help_description="")
Set a help flag, replace the existing one if present.
Definition App_inl.hpp:278
App * _get_fallthrough_parent()
Get the appropriate parent to fallthrough to which is the first one that has a name or the main app.
Definition App_inl.hpp:2277
bool allow_non_standard_options_
indicator that the subcommand should allow non-standard option arguments, such as -single_dash_flag
Definition App.hpp:272
Option * config_ptr_
Pointer to the config option.
Definition App.hpp:306
CLI11_NODISCARD bool get_allow_non_standard_option_names() const
Get the status of allowing non standard option names.
Definition App.hpp:1180
App * disabled_by_default(bool disable=true)
Set the subcommand to be disabled by default, so on clear(), at the start of each parse it is disable...
Definition App.hpp:421
void _move_to_missing(detail::Classifier val_type, const std::string &val)
Helper function to place extra values in the most appropriate position.
Definition App_inl.hpp:2339
std::size_t require_option_min_
Minimum required options (not inheritable!)
Definition App.hpp:287
NameMatch
enumeration of matching possibilities
Definition App.hpp:1248
App * ignore_underscore(bool value=true)
Ignore underscore. Subcommands inherit value.
Definition App_inl.hpp:148
std::size_t require_subcommand_max_
Max number of subcommands allowed (parsing stops after this number). 0 is unlimited INHERITABLE.
Definition App.hpp:284
std::vector< App_p > subcommands_
Storage for subcommand list.
Definition App.hpp:227
CLI11_NODISCARD std::vector< std::string > remaining(bool recurse=false) const
This returns the missing options from the current subcommand.
Definition App_inl.hpp:982
CLI11_NODISCARD std::vector< std::string > remaining_for_passthrough(bool recurse=false) const
This returns the missing options in a form ready for processing by another command line program.
Definition App_inl.hpp:1008
std::uint32_t parsed_
Counts the number of times this command/subcommand was parsed.
Definition App.hpp:278
CLI11_NODISCARD App * get_option_group(std::string group_name) const
Check to see if an option group is part of this App.
Definition App_inl.hpp:555
std::string usage_
Usage to put after program/subcommand description in the help output INHERITABLE.
Definition App.hpp:164
OptionDefaults option_defaults_
The default values for options, customizable and changeable INHERITABLE.
Definition App.hpp:154
void _process_requirements()
Verify required options and cross requirements. Subcommands too (only if selected).
Definition App_inl.hpp:1293
CLI11_NODISCARD std::size_t count_all() const
Definition App_inl.hpp:564
bool disabled_
If set to true the subcommand is disabled and cannot be used, ignored for main app.
Definition App.hpp:131
Option * set_version_flag(std::string flag_name="", const std::string &versionString="", const std::string &version_help="Display program version information and exit")
Set a version flag and version display string, replace the existing one if present.
Definition App_inl.hpp:311
bool remove_needs(Option *opt)
Removes an option from the needs list of this subcommand.
Definition App_inl.hpp:782
Option * get_help_ptr()
Get a pointer to the help flag.
Definition App.hpp:1202
void _configure()
Definition App_inl.hpp:1063
CLI11_NODISCARD std::size_t _count_remaining_positionals(bool required_only=false) const
Count the required remaining positional arguments.
Definition App_inl.hpp:1773
Option * add_flag_function(std::string flag_name, std::function< void(std::int64_t)> function, std::string flag_description="")
Add option for callback with an integer value.
Definition App_inl.hpp:387
void parse(int argc, const char *const *argv)
Definition App_inl.hpp:594
void _process_config_file()
Read and process a configuration file (main app only)
Definition App_inl.hpp:1184
std::string footer_
Footer to put after all options in the help output INHERITABLE.
Definition App.hpp:170
void increment_parsed()
Internal function to recursively increment the parsed counter on the current app as well unnamed subc...
Definition App_inl.hpp:1489
config_extras_mode allow_config_extras_
Definition App.hpp:119
CLI11_NODISCARD bool check_name(std::string name_to_check) const
Definition App_inl.hpp:926
Option * version_ptr_
A pointer to a version flag if there is one.
Definition App.hpp:182
CLI11_NODISCARD const Option * get_help_all_ptr() const
Get a pointer to the help all flag. (const)
Definition App.hpp:1208
bool remove_subcommand(App *subcom)
Removes a subcommand from the App. Takes a subcommand pointer. Returns true if found and removed.
Definition App_inl.hpp:485
App * parent_
A pointer to the parent if this is a subcommand.
Definition App.hpp:293
std::set< Option * > exclude_options_
Definition App.hpp:212
void _trigger_pre_parse(std::size_t remaining_args)
Trigger the pre_parse callback if needed.
Definition App_inl.hpp:2259
CLI::App_p get_subcommand_ptr(App *subcom) const
Check to see if a subcommand is part of this command and get a shared_ptr to it.
Definition App_inl.hpp:530
std::function< void()> parse_complete_callback_
This is a function that runs when parsing has finished.
Definition App.hpp:144
virtual void pre_callback()
Definition App.hpp:889
Option * add_flag(std::string flag_name)
Add a flag with no description or variable assignment.
Definition App.hpp:655
void _validate() const
Definition App_inl.hpp:1028
std::string name_
Subcommand name or program name (from parser if name is empty)
Definition App.hpp:109
std::vector< App * > parsed_subcommands_
This is a list of the subcommands collected, in order.
Definition App.hpp:205
bool ignore_underscore_
If true, the program should ignore underscores INHERITABLE.
Definition App.hpp:233
missing_t missing_
Definition App.hpp:199
void run_callback(bool final_mode=false, bool suppress_final_callback=false)
Internal function to run (App) callback, bottom up.
Definition App_inl.hpp:1083
bool allow_prefix_matching_
indicator to allow subcommands to match with prefix matching
Definition App.hpp:275
std::size_t require_subcommand_min_
Minimum required subcommands (not inheritable!)
Definition App.hpp:281
CLI11_NODISCARD NameMatch check_name_detail(std::string name_to_check) const
Definition App_inl.hpp:931
void _process_env()
Get envname options if not yet passed. Runs on all subcommands.
Definition App_inl.hpp:1220
std::function< std::string(const App *, const Error &e)> failure_message_
The error message printing function INHERITABLE.
Definition App.hpp:188
void _parse_stream(std::istream &input)
Internal function to parse a stream.
Definition App_inl.hpp:1551
CLI11_NODISCARD std::string get_display_name(bool with_aliases=false) const
Get a display name for an app.
Definition App_inl.hpp:910
bool has_automatic_name_
If set to true the name was automatically generated from the command line vs a user set name.
Definition App.hpp:125
CLI11_NODISCARD const std::string & _compare_subcommand_names(const App &subcom, const App &base) const
Helper function to run through all possible comparisons of subcommand names to check there is no over...
Definition App_inl.hpp:2288
void clear()
Reset the parsed data.
Definition App_inl.hpp:578
App * enabled_by_default(bool enable=true)
Definition App.hpp:432
App * get_subcommand(const App *subcom) const
Definition App_inl.hpp:501
CLI11_NODISCARD std::string version() const
Displays a version string.
Definition App_inl.hpp:814
CLI11_NODISCARD App * get_subcommand_no_throw(std::string subcom) const noexcept
Definition App_inl.hpp:517
bool _add_flag_like_result(Option *op, const ConfigItem &item, const std::vector< std::string > &inputs)
store the results for a flag like option
Definition App_inl.hpp:1570
std::vector< Option_p > options_
The list of options, stored locally.
Definition App.hpp:157
Option * help_all_ptr_
A pointer to the help all flag if there is one INHERITABLE.
Definition App.hpp:179
bool validate_optional_arguments_
If set to true optional vector arguments are validated before assigning INHERITABLE.
Definition App.hpp:265
std::function< void()> final_callback_
This is a function that runs when all processing has completed.
Definition App.hpp:147
bool remove_option(Option *opt)
Removes an option from the App. Takes an option pointer. Returns true if found and removed.
Definition App_inl.hpp:431
App(std::string app_description, std::string app_name, App *parent)
Special private constructor for subcommand.
Definition App_inl.hpp:30
App * add_subcommand(std::string subcommand_name="", std::string subcommand_description="")
Add a subcommand. Inherits INHERITABLE and OptionDefaults, and help flag.
Definition App_inl.hpp:454
App * preparse_callback(std::function< void(std::size_t)> pp_callback)
Definition App.hpp:374
Option * add_flag_callback(std::string flag_name, std::function< void(void)> function, std::string flag_description="")
Add option for callback that is triggered with a true flag and takes no arguments.
Definition App_inl.hpp:370
bool positionals_at_end_
specify that positional arguments come at the end of the argument sequence not inheritable
Definition App.hpp:251
void _process()
Process callbacks and such.
Definition App_inl.hpp:1421
bool immediate_callback_
Definition App.hpp:138
bool _parse_single(std::vector< std::string > &args, bool &positional_only)
Definition App_inl.hpp:1731
App * name(std::string app_name="")
Set a name for the app (empty will use parser to set the name)
Definition App_inl.hpp:87
void _move_option(Option *opt, App *app)
function that could be used by subclasses of App to shift options around into subcommands
Definition App_inl.hpp:2355
void _process_extras()
Throw an error if anything is left over and should not be.
Definition App_inl.hpp:1460
CLI11_NODISCARD bool _valid_subcommand(const std::string &current, bool ignore_used=true) const
Check to see if a subcommand is valid. Give up immediately if subcommand max has been reached.
Definition App_inl.hpp:1110
bool configurable_
if set to true the subcommand can be triggered via configuration files INHERITABLE
Definition App.hpp:259
CLI11_NODISCARD std::vector< std::string > get_groups() const
Get the groups available directly from this option (in order)
Definition App_inl.hpp:969
void _parse_config(const std::vector< ConfigItem > &args)
Definition App_inl.hpp:1562
std::size_t require_option_max_
Max number of options allowed. 0 is unlimited (not inheritable)
Definition App.hpp:290
std::vector< std::string > aliases_
Alias names for the subcommand.
Definition App.hpp:299
std::set< App * > exclude_subcommands_
this is a list of subcommands that are exclusionary to this one
Definition App.hpp:208
bool _parse_positional(std::vector< std::string > &args, bool haltOnSubcommand)
Definition App_inl.hpp:1795
bool ignore_case_
If true, the program name is not case-sensitive INHERITABLE.
Definition App.hpp:230
CLI11_NODISCARD const std::string & get_group() const
Get the group of this subcommand.
Definition App.hpp:1140
bool _parse_arg(std::vector< std::string > &args, detail::Classifier current_type, bool local_processing_only)
Definition App_inl.hpp:2009
std::function< void(std::size_t)> pre_parse_callback_
This is a function that runs prior to the start of parsing.
Definition App.hpp:141
std::string group_
The group membership INHERITABLE.
Definition App.hpp:296
App * alias(std::string app_name)
Set an alias for the app.
Definition App_inl.hpp:104
bool pre_parse_called_
Flag indicating that the pre_parse_callback has been triggered.
Definition App.hpp:134
Option * help_ptr_
A pointer to the help flag if there is one INHERITABLE.
Definition App.hpp:176
Option * set_config(std::string option_name="", std::string default_filename="", const std::string &help_message="Read an ini file", bool config_required=false)
Set a configuration ini file option, or clear it if no name passed.
Definition App_inl.hpp:402
App * ignore_case(bool value=true)
Ignore case. Subcommands inherit value.
Definition App_inl.hpp:134
bool remove_excludes(Option *opt)
Removes an option from the excludes list of this subcommand.
Definition App_inl.hpp:762
CLI11_NODISCARD std::vector< App * > get_subcommands() const
Definition App.hpp:940
CLI11_NODISCARD config_extras_mode get_allow_config_extras() const
Get the status of allow extras.
Definition App.hpp:1199
bool _parse_subcommand(std::vector< std::string > &args)
Definition App_inl.hpp:1969
bool fallthrough_
Definition App.hpp:237
std::set< Option * > need_options_
Definition App.hpp:220
std::vector< const Option * > get_options(const std::function< bool(const Option *)> filter={}) const
Get the list of options (user facing function, so returns raw pointers), has optional filter function...
Definition App_inl.hpp:832
std::set< App * > need_subcommands_
Definition App.hpp:216
bool prefix_command_
If true, cease processing on an unrecognized option (implies allow_extras) INHERITABLE.
Definition App.hpp:122
Option * add_option(std::string option_name, callback_t option_callback, std::string option_description="", bool defaulted=false, std::function< std::string()> func={})
Definition App_inl.hpp:162
std::vector< Option * > parse_order_
This is a list of pointers to options with the original parse order.
Definition App.hpp:202
void _parse(std::vector< std::string > &args)
Internal parse function.
Definition App_inl.hpp:1497
bool validate_positionals_
If set to true positional options are validated before assigning INHERITABLE.
Definition App.hpp:262
bool _parse_single_config(const ConfigItem &item, std::size_t level=0)
Fill in a single config option.
Definition App_inl.hpp:1631
void _process_help_flags(CallbackPriority priority, bool trigger_help=false, bool trigger_all_help=false) const
Definition App_inl.hpp:1271
startup_mode default_startup
Definition App.hpp:256
void _process_callbacks(CallbackPriority priority)
Process callbacks. Runs on all subcommands.
Definition App_inl.hpp:1242
bool allow_extras_
If true, allow extra arguments (ie, don't throw an error). INHERITABLE.
Definition App.hpp:115
CLI11_NODISCARD char ** ensure_utf8(char **argv)
Convert the contents of argv to UTF-8. Only does something on Windows, does nothing elsewhere.
Definition App_inl.hpp:65
CLI11_NODISCARD App * _find_subcommand(const std::string &subc_name, bool ignore_disabled, bool ignore_used) const noexcept
Definition App_inl.hpp:1933
CLI11_NODISCARD const std::string & get_name() const
Get the name of the current app.
Definition App.hpp:1229
App * disabled(bool disable=true)
Disable the subcommand or option group.
Definition App.hpp:398
std::shared_ptr< FormatterBase > formatter_
This is the formatter for help printing. Default provided. INHERITABLE (same pointer)
Definition App.hpp:185
Option * set_help_all_flag(std::string help_name="", const std::string &help_description="")
Set a help all flag, replaced the existing one if present.
Definition App_inl.hpp:294
bool allow_windows_style_options_
Allow '/' for options for Windows like options. Defaults to true on Windows, false otherwise....
Definition App.hpp:243
std::shared_ptr< Config > config_formatter_
This is the formatter for help printing. Default provided. INHERITABLE (same pointer)
Definition App.hpp:309
Usually something like –help-all on command line.
Definition Error.hpp:178
-h or –help on command line
Definition Error.hpp:172
-v or –version on command line
Definition Error.hpp:185
All errors derive from this one.
Definition Error.hpp:73
Thrown when an excludes option is present.
Definition Error.hpp:301
Thrown when too many positionals or options are found.
Definition Error.hpp:308
Thrown when parsing an INI file and it is missing.
Definition Error.hpp:198
Definition Error.hpp:343
Thrown when an option is set to conflicting values (non-vector and multi args, for example)
Definition Error.hpp:96
Thrown when validation fails before parsing.
Definition Error.hpp:334
Thrown when an option already exists.
Definition Error.hpp:144
CLI11_NODISCARD CallbackPriority get_callback_priority() const
The priority of callback.
Definition Option.hpp:161
CLI11_NODISCARD bool get_required() const
True if this is a required option.
Definition Option.hpp:137
CRTP * configurable(bool value=true)
Allow in a configuration file.
Definition Option.hpp:202
CLI11_NODISCARD MultiOptionPolicy get_multi_option_policy() const
The status of the multi option policy.
Definition Option.hpp:158
CLI11_NODISCARD bool get_configurable() const
The status of configurable.
Definition Option.hpp:146
bool required_
True if this is a required option.
Definition Option.hpp:76
CLI11_NODISCARD bool get_disable_flag_override() const
The status of configurable.
Definition Option.hpp:149
CLI11_NODISCARD const std::string & get_group() const
Get the group of this option.
Definition Option.hpp:134
void copy_to(T *other) const
Copy the contents to another similar class (one based on OptionBase)
Definition Option_inl.hpp:25
CRTP * required(bool value=true)
Set the option as required.
Definition Option.hpp:118
Definition Option.hpp:259
Option * expected(int value)
Set the number of expected arguments.
Definition Option_inl.hpp:38
CLI11_NODISCARD bool get_positional() const
True if the argument can be given directly.
Definition Option.hpp:628
CLI11_NODISCARD bool check_name(const std::string &name) const
Check a name. Requires "-" or "--" for short / long, supports positional name.
Definition Option_inl.hpp:381
@ callback_run
the callback has been executed
Option * callback_priority(CallbackPriority value=CallbackPriority::Normal)
Definition Option.hpp:448
std::set< Option * > needs_
A list of options that are required with this option.
Definition Option.hpp:326
void run_callback()
Process the callback.
Definition Option_inl.hpp:310
CLI11_NODISCARD bool check_sname(std::string name) const
Requires "-" to be removed from string.
Definition Option.hpp:681
CLI11_NODISCARD std::string get_name(bool positional=false, bool all_options=false) const
Gets a comma separated list of names. Will include / prefer the positional name if positional is true...
Definition Option_inl.hpp:257
std::set< Option * > excludes_
A list of options that are excluded with this option.
Definition Option.hpp:329
bool force_callback_
flag indicating that the option should force the callback regardless if any results present
Definition Option.hpp:369
CLI11_NODISCARD bool get_callback_run() const
See if the callback has been run already.
Definition Option.hpp:766
std::vector< std::string > fnames_
a list of flag names with specified default values;
Definition Option.hpp:278
CLI11_NODISCARD int get_items_expected_min() const
The total min number of expected string values to be used.
Definition Option.hpp:617
CLI11_NODISCARD bool check_lname(std::string name) const
Requires "--" to be removed from string.
Definition Option.hpp:686
CLI11_NODISCARD const results_t & results() const
Get the current complete results set.
Definition Option.hpp:712
CLI11_NODISCARD int get_items_expected_max() const
Get the maximum number of items expected to be returned and used for the callback.
Definition Option.hpp:620
CLI11_NODISCARD std::size_t count() const
Count the total number of times an option was passed.
Definition Option.hpp:389
Option * multi_option_policy(MultiOptionPolicy value=MultiOptionPolicy::Throw)
Take the last argument if given multiple times (or another policy)
Definition Option_inl.hpp:244
CLI11_NODISCARD bool get_inject_separator() const
Return the inject_separator flag.
Definition Option.hpp:570
CLI11_NODISCARD std::string get_flag_value(const std::string &name, std::string input_value) const
Definition Option_inl.hpp:410
CLI11_NODISCARD const std::string & get_description() const
Get the description.
Definition Option.hpp:637
CLI11_NODISCARD bool empty() const
True if the option was not passed.
Definition Option.hpp:392
CLI11_NODISCARD int get_expected_min() const
The number of times the option expects to be included.
Definition Option.hpp:612
void clear()
Clear the parsed results (mostly for testing)
Definition Option.hpp:398
CLI11_NODISCARD int get_expected_max() const
The max number of times the option expects to be included.
Definition Option.hpp:614
Option * default_str(std::string val)
Set the default value string representation (does not change the contained value)
Definition Option.hpp:808
std::string envname_
If given, check the environment for this option.
Definition Option.hpp:284
CLI11_NODISCARD bool get_allow_extra_args() const
Get the current value of allow extra args.
Definition Option.hpp:420
std::vector< std::pair< std::string, std::string > > default_flag_values_
Definition Option.hpp:275
Option * add_result(std::string s)
Puts a result at the end.
Definition Option_inl.hpp:456
CLI11_NODISCARD T as() const
Return the results as the specified type.
Definition Option.hpp:759
Thrown when counting a nonexistent option.
Definition Error.hpp:351
Anything that can error in Parse.
Definition Error.hpp:159
Thrown when a required option is missing.
Definition Error.hpp:228
Thrown when a requires option is missing.
Definition Error.hpp:294
Holds values to load into Options.
Definition ConfigFwd.hpp:29
std::vector< std::string > inputs
Listing of inputs.
Definition ConfigFwd.hpp:36
std::string name
This is the name.
Definition ConfigFwd.hpp:34
CLI11_NODISCARD std::string fullname() const
The list of parents and name joined by ".".
Definition ConfigFwd.hpp:40
bool multiline
indicator if a multiline vector separator was inserted
Definition ConfigFwd.hpp:38
std::vector< std::string > parents
This is the list of parents.
Definition ConfigFwd.hpp:31