1 //===-- Options.cpp ---------------------------------------------*- C++ -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 #include "lldb/Interpreter/Options.h"
16 #include "lldb/Host/OptionParser.h"
17 #include "lldb/Interpreter/CommandCompletions.h"
18 #include "lldb/Interpreter/CommandInterpreter.h"
19 #include "lldb/Interpreter/CommandObject.h"
20 #include "lldb/Interpreter/CommandReturnObject.h"
21 #include "lldb/Target/Target.h"
22 #include "lldb/Utility/StreamString.h"
25 using namespace lldb_private;
28 Options::Options() : m_getopt_table() { BuildValidOptionSets(); }
30 Options::~Options() {}
32 void Options::NotifyOptionParsingStarting(ExecutionContext *execution_context) {
33 m_seen_options.clear();
34 // Let the subclass reset its option values
35 OptionParsingStarting(execution_context);
39 Options::NotifyOptionParsingFinished(ExecutionContext *execution_context) {
40 return OptionParsingFinished(execution_context);
43 void Options::OptionSeen(int option_idx) { m_seen_options.insert(option_idx); }
45 // Returns true is set_a is a subset of set_b; Otherwise returns false.
47 bool Options::IsASubset(const OptionSet &set_a, const OptionSet &set_b) {
48 bool is_a_subset = true;
49 OptionSet::const_iterator pos_a;
50 OptionSet::const_iterator pos_b;
52 // set_a is a subset of set_b if every member of set_a is also a member of
55 for (pos_a = set_a.begin(); pos_a != set_a.end() && is_a_subset; ++pos_a) {
56 pos_b = set_b.find(*pos_a);
57 if (pos_b == set_b.end())
64 // Returns the set difference set_a - set_b, i.e. { x | ElementOf (x, set_a) &&
65 // !ElementOf (x, set_b) }
67 size_t Options::OptionsSetDiff(const OptionSet &set_a, const OptionSet &set_b,
70 OptionSet::const_iterator pos_a;
71 OptionSet::const_iterator pos_b;
73 for (pos_a = set_a.begin(); pos_a != set_a.end(); ++pos_a) {
74 pos_b = set_b.find(*pos_a);
75 if (pos_b == set_b.end()) {
84 // Returns the union of set_a and set_b. Does not put duplicate members into
87 void Options::OptionsSetUnion(const OptionSet &set_a, const OptionSet &set_b,
88 OptionSet &union_set) {
89 OptionSet::const_iterator pos;
90 OptionSet::iterator pos_union;
92 // Put all the elements of set_a into the union.
94 for (pos = set_a.begin(); pos != set_a.end(); ++pos)
95 union_set.insert(*pos);
97 // Put all the elements of set_b that are not already there into the union.
98 for (pos = set_b.begin(); pos != set_b.end(); ++pos) {
99 pos_union = union_set.find(*pos);
100 if (pos_union == union_set.end())
101 union_set.insert(*pos);
105 bool Options::VerifyOptions(CommandReturnObject &result) {
106 bool options_are_valid = false;
108 int num_levels = GetRequiredOptions().size();
110 for (int i = 0; i < num_levels && !options_are_valid; ++i) {
111 // This is the correct set of options if: 1). m_seen_options contains
112 // all of m_required_options[i] (i.e. all the required options at this
113 // level are a subset of m_seen_options); AND 2). { m_seen_options -
114 // m_required_options[i] is a subset of m_options_options[i] (i.e. all
115 // the rest of m_seen_options are in the set of optional options at this
118 // Check to see if all of m_required_options[i] are a subset of
120 if (IsASubset(GetRequiredOptions()[i], m_seen_options)) {
121 // Construct the set difference: remaining_options = {m_seen_options} -
122 // {m_required_options[i]}
123 OptionSet remaining_options;
124 OptionsSetDiff(m_seen_options, GetRequiredOptions()[i],
126 // Check to see if remaining_options is a subset of
127 // m_optional_options[i]
128 if (IsASubset(remaining_options, GetOptionalOptions()[i]))
129 options_are_valid = true;
133 options_are_valid = true;
136 if (options_are_valid) {
137 result.SetStatus(eReturnStatusSuccessFinishNoResult);
139 result.AppendError("invalid combination of options for the given command");
140 result.SetStatus(eReturnStatusFailed);
143 return options_are_valid;
146 // This is called in the Options constructor, though we could call it lazily if
147 // that ends up being a performance problem.
149 void Options::BuildValidOptionSets() {
150 // Check to see if we already did this.
151 if (m_required_options.size() != 0)
154 // Check to see if there are any options.
155 int num_options = NumCommandOptions();
156 if (num_options == 0)
159 auto opt_defs = GetDefinitions();
160 m_required_options.resize(1);
161 m_optional_options.resize(1);
163 // First count the number of option sets we've got. Ignore
164 // LLDB_ALL_OPTION_SETS...
166 uint32_t num_option_sets = 0;
168 for (const auto &def : opt_defs) {
169 uint32_t this_usage_mask = def.usage_mask;
170 if (this_usage_mask == LLDB_OPT_SET_ALL) {
171 if (num_option_sets == 0)
174 for (uint32_t j = 0; j < LLDB_MAX_NUM_OPTION_SETS; j++) {
175 if (this_usage_mask & (1 << j)) {
176 if (num_option_sets <= j)
177 num_option_sets = j + 1;
183 if (num_option_sets > 0) {
184 m_required_options.resize(num_option_sets);
185 m_optional_options.resize(num_option_sets);
187 for (const auto &def : opt_defs) {
188 for (uint32_t j = 0; j < num_option_sets; j++) {
189 if (def.usage_mask & 1 << j) {
191 m_required_options[j].insert(def.short_option);
193 m_optional_options[j].insert(def.short_option);
200 uint32_t Options::NumCommandOptions() { return GetDefinitions().size(); }
202 Option *Options::GetLongOptions() {
203 // Check to see if this has already been done.
204 if (m_getopt_table.empty()) {
205 auto defs = GetDefinitions();
209 std::map<int, uint32_t> option_seen;
211 m_getopt_table.resize(defs.size() + 1);
212 for (size_t i = 0; i < defs.size(); ++i) {
213 const int short_opt = defs[i].short_option;
215 m_getopt_table[i].definition = &defs[i];
216 m_getopt_table[i].flag = nullptr;
217 m_getopt_table[i].val = short_opt;
219 if (option_seen.find(short_opt) == option_seen.end()) {
220 option_seen[short_opt] = i;
221 } else if (short_opt) {
222 m_getopt_table[i].val = 0;
223 std::map<int, uint32_t>::const_iterator pos =
224 option_seen.find(short_opt);
226 if (isprint8(short_opt))
227 Host::SystemLog(Host::eSystemLogError,
228 "option[%u] --%s has a short option -%c that "
229 "conflicts with option[%u] --%s, short option won't "
230 "be used for --%s\n",
231 (int)i, defs[i].long_option, short_opt, pos->second,
232 m_getopt_table[pos->second].definition->long_option,
233 defs[i].long_option);
235 Host::SystemLog(Host::eSystemLogError,
236 "option[%u] --%s has a short option 0x%x that "
237 "conflicts with option[%u] --%s, short option won't "
238 "be used for --%s\n",
239 (int)i, defs[i].long_option, short_opt, pos->second,
240 m_getopt_table[pos->second].definition->long_option,
241 defs[i].long_option);
245 // getopt_long_only requires a NULL final entry in the table:
247 m_getopt_table.back().definition = nullptr;
248 m_getopt_table.back().flag = nullptr;
249 m_getopt_table.back().val = 0;
252 if (m_getopt_table.empty())
255 return &m_getopt_table.front();
258 // This function takes INDENT, which tells how many spaces to output at the
259 // front of each line; SPACES, which is a string containing 80 spaces; and
260 // TEXT, which is the text that is to be output. It outputs the text, on
261 // multiple lines if necessary, to RESULT, with INDENT spaces at the front of
262 // each line. It breaks lines on spaces, tabs or newlines, shortening the line
263 // if necessary to not break in the middle of a word. It assumes that each
264 // output line should contain a maximum of OUTPUT_MAX_COLUMNS characters.
266 void Options::OutputFormattedUsageText(Stream &strm,
267 const OptionDefinition &option_def,
268 uint32_t output_max_columns) {
269 std::string actual_text;
270 if (option_def.validator) {
271 const char *condition = option_def.validator->ShortConditionString();
274 actual_text.append(condition);
275 actual_text.append("] ");
278 actual_text.append(option_def.usage_text);
280 // Will it all fit on one line?
282 if (static_cast<uint32_t>(actual_text.length() + strm.GetIndentLevel()) <
283 output_max_columns) {
284 // Output it as a single line.
285 strm.Indent(actual_text.c_str());
288 // We need to break it up into multiple lines.
290 int text_width = output_max_columns - strm.GetIndentLevel() - 1;
293 int final_end = actual_text.length();
296 while (end < final_end) {
297 // Don't start the 'text' on a space, since we're already outputting the
299 while ((start < final_end) && (actual_text[start] == ' '))
302 end = start + text_width;
306 // If we're not at the end of the text, make sure we break the line on
308 while (end > start && actual_text[end] != ' ' &&
309 actual_text[end] != '\t' && actual_text[end] != '\n')
313 sub_len = end - start;
317 assert(start < final_end);
318 assert(start + sub_len <= final_end);
319 strm.Write(actual_text.c_str() + start, sub_len);
326 bool Options::SupportsLongOption(const char *long_option) {
327 if (!long_option || !long_option[0])
330 auto opt_defs = GetDefinitions();
331 if (opt_defs.empty())
334 const char *long_option_name = long_option;
335 if (long_option[0] == '-' && long_option[1] == '-')
336 long_option_name += 2;
338 for (auto &def : opt_defs) {
339 if (!def.long_option)
342 if (strcmp(def.long_option, long_option_name) == 0)
349 enum OptionDisplayType {
355 static bool PrintOption(const OptionDefinition &opt_def,
356 OptionDisplayType display_type, const char *header,
357 const char *footer, bool show_optional, Stream &strm) {
358 const bool has_short_option = isprint8(opt_def.short_option) != 0;
360 if (display_type == eDisplayShortOption && !has_short_option)
363 if (header && header[0])
364 strm.PutCString(header);
366 if (show_optional && !opt_def.required)
368 const bool show_short_option =
369 has_short_option && display_type != eDisplayLongOption;
370 if (show_short_option)
371 strm.Printf("-%c", opt_def.short_option);
373 strm.Printf("--%s", opt_def.long_option);
374 switch (opt_def.option_has_arg) {
375 case OptionParser::eNoArgument:
377 case OptionParser::eRequiredArgument:
378 strm.Printf(" <%s>", CommandObject::GetArgumentName(opt_def.argument_type));
381 case OptionParser::eOptionalArgument:
382 strm.Printf("%s[<%s>]", show_short_option ? "" : "=",
383 CommandObject::GetArgumentName(opt_def.argument_type));
386 if (show_optional && !opt_def.required)
388 if (footer && footer[0])
389 strm.PutCString(footer);
393 void Options::GenerateOptionUsage(Stream &strm, CommandObject *cmd,
394 uint32_t screen_width) {
395 const bool only_print_args = cmd->IsDashDashCommand();
397 auto opt_defs = GetDefinitions();
398 const uint32_t save_indent_level = strm.GetIndentLevel();
399 llvm::StringRef name;
401 StreamString arguments_str;
404 name = cmd->GetCommandName();
405 cmd->GetFormattedCommandArguments(arguments_str);
409 strm.PutCString("\nCommand Options Usage:\n");
413 // First, show each usage level set of options, e.g. <cmd> [options-for-
416 // [options-for-level-1]
419 const uint32_t num_options = NumCommandOptions();
420 if (num_options == 0)
423 uint32_t num_option_sets = GetRequiredOptions().size();
427 if (!only_print_args) {
428 for (uint32_t opt_set = 0; opt_set < num_option_sets; ++opt_set) {
429 uint32_t opt_set_mask;
431 opt_set_mask = 1 << opt_set;
436 // Different option sets may require different args.
437 StreamString args_str;
439 cmd->GetFormattedCommandArguments(args_str, opt_set_mask);
441 // First go through and print all options that take no arguments as a
442 // single string. If a command has "-a" "-b" and "-c", this will show up
445 std::set<int> options;
446 std::set<int>::const_iterator options_pos, options_end;
447 for (auto &def : opt_defs) {
448 if (def.usage_mask & opt_set_mask && isprint8(def.short_option)) {
449 // Add current option to the end of out_stream.
451 if (def.required && def.option_has_arg == OptionParser::eNoArgument) {
452 options.insert(def.short_option);
457 if (!options.empty()) {
458 // We have some required options with no arguments
459 strm.PutCString(" -");
460 for (i = 0; i < 2; ++i)
461 for (options_pos = options.begin(), options_end = options.end();
462 options_pos != options_end; ++options_pos) {
463 if (i == 0 && ::islower(*options_pos))
465 if (i == 1 && ::isupper(*options_pos))
467 strm << (char)*options_pos;
472 for (auto &def : opt_defs) {
473 if (def.usage_mask & opt_set_mask && isprint8(def.short_option)) {
474 // Add current option to the end of out_stream.
477 def.option_has_arg == OptionParser::eNoArgument) {
478 options.insert(def.short_option);
483 if (!options.empty()) {
484 // We have some required options with no arguments
485 strm.PutCString(" [-");
486 for (i = 0; i < 2; ++i)
487 for (options_pos = options.begin(), options_end = options.end();
488 options_pos != options_end; ++options_pos) {
489 if (i == 0 && ::islower(*options_pos))
491 if (i == 1 && ::isupper(*options_pos))
493 strm << (char)*options_pos;
498 // First go through and print the required options (list them up front).
500 for (auto &def : opt_defs) {
501 if (def.usage_mask & opt_set_mask && isprint8(def.short_option)) {
502 if (def.required && def.option_has_arg != OptionParser::eNoArgument)
503 PrintOption(def, eDisplayBestOption, " ", nullptr, true, strm);
507 // Now go through again, and this time only print the optional options.
509 for (auto &def : opt_defs) {
510 if (def.usage_mask & opt_set_mask) {
511 // Add current option to the end of out_stream.
513 if (!def.required && def.option_has_arg != OptionParser::eNoArgument)
514 PrintOption(def, eDisplayBestOption, " ", nullptr, true, strm);
518 if (args_str.GetSize() > 0) {
519 if (cmd->WantsRawCommandString() && !only_print_args)
522 strm << " " << args_str.GetString();
529 if (cmd && (only_print_args || cmd->WantsRawCommandString()) &&
530 arguments_str.GetSize() > 0) {
531 if (!only_print_args)
534 strm << " " << arguments_str.GetString();
539 if (!only_print_args) {
540 // Now print out all the detailed information about the various options:
541 // long form, short form and help text:
542 // -short <argument> ( --long_name <argument> )
545 // This variable is used to keep track of which options' info we've printed
546 // out, because some options can be in more than one usage level, but we
547 // only want to print the long form of its information once.
549 std::multimap<int, uint32_t> options_seen;
552 // Put the unique command options in a vector & sort it, so we can output
553 // them alphabetically (by short_option) when writing out detailed help for
557 for (auto &def : opt_defs)
558 options_seen.insert(std::make_pair(def.short_option, i++));
560 // Go through the unique'd and alphabetically sorted vector of options,
561 // find the table entry for each option and write out the detailed help
562 // information for that option.
564 bool first_option_printed = false;
566 for (auto pos : options_seen) {
568 // Print out the help information for this option.
570 // Put a newline separation between arguments
571 if (first_option_printed)
574 first_option_printed = true;
576 CommandArgumentType arg_type = opt_defs[i].argument_type;
578 StreamString arg_name_str;
579 arg_name_str.Printf("<%s>", CommandObject::GetArgumentName(arg_type));
582 if (opt_defs[i].short_option && isprint8(opt_defs[i].short_option)) {
583 PrintOption(opt_defs[i], eDisplayShortOption, nullptr, nullptr, false,
585 PrintOption(opt_defs[i], eDisplayLongOption, " ( ", " )", false, strm);
587 // Short option is not printable, just print long option
588 PrintOption(opt_defs[i], eDisplayLongOption, nullptr, nullptr, false,
595 if (opt_defs[i].usage_text)
596 OutputFormattedUsageText(strm, opt_defs[i], screen_width);
597 if (!opt_defs[i].enum_values.empty()) {
599 strm.Printf("Values: ");
600 bool is_first = true;
601 for (const auto &enum_value : opt_defs[i].enum_values) {
603 strm.Printf("%s", enum_value.string_value);
607 strm.Printf(" | %s", enum_value.string_value);
615 // Restore the indent level
616 strm.SetIndentLevel(save_indent_level);
619 // This function is called when we have been given a potentially incomplete set
620 // of options, such as when an alias has been defined (more options might be
621 // added at at the time the alias is invoked). We need to verify that the
622 // options in the set m_seen_options are all part of a set that may be used
623 // together, but m_seen_options may be missing some of the "required" options.
625 bool Options::VerifyPartialOptions(CommandReturnObject &result) {
626 bool options_are_valid = false;
628 int num_levels = GetRequiredOptions().size();
630 for (int i = 0; i < num_levels && !options_are_valid; ++i) {
631 // In this case we are treating all options as optional rather than
632 // required. Therefore a set of options is correct if m_seen_options is a
633 // subset of the union of m_required_options and m_optional_options.
635 OptionsSetUnion(GetRequiredOptions()[i], GetOptionalOptions()[i],
637 if (IsASubset(m_seen_options, union_set))
638 options_are_valid = true;
642 return options_are_valid;
645 bool Options::HandleOptionCompletion(CompletionRequest &request,
646 OptionElementVector &opt_element_vector,
647 CommandInterpreter &interpreter) {
648 request.SetWordComplete(true);
650 // For now we just scan the completions to see if the cursor position is in
651 // an option or its argument. Otherwise we'll call HandleArgumentCompletion.
652 // In the future we can use completion to validate options as well if we
655 auto opt_defs = GetDefinitions();
657 std::string cur_opt_std_str = request.GetCursorArgumentPrefix().str();
658 const char *cur_opt_str = cur_opt_std_str.c_str();
660 for (size_t i = 0; i < opt_element_vector.size(); i++) {
661 int opt_pos = opt_element_vector[i].opt_pos;
662 int opt_arg_pos = opt_element_vector[i].opt_arg_pos;
663 int opt_defs_index = opt_element_vector[i].opt_defs_index;
664 if (opt_pos == request.GetCursorIndex()) {
665 // We're completing the option itself.
667 if (opt_defs_index == OptionArgElement::eBareDash) {
668 // We're completing a bare dash. That means all options are open.
669 // FIXME: We should scan the other options provided and only complete
671 // within the option group they belong to.
672 char opt_str[3] = {'-', 'a', '\0'};
674 for (auto &def : opt_defs) {
675 if (!def.short_option)
677 opt_str[1] = def.short_option;
678 request.AddCompletion(opt_str);
682 } else if (opt_defs_index == OptionArgElement::eBareDoubleDash) {
683 std::string full_name("--");
684 for (auto &def : opt_defs) {
685 if (!def.short_option)
688 full_name.erase(full_name.begin() + 2, full_name.end());
689 full_name.append(def.long_option);
690 request.AddCompletion(full_name.c_str());
693 } else if (opt_defs_index != OptionArgElement::eUnrecognizedArg) {
694 // We recognized it, if it an incomplete long option, complete it
695 // anyway (getopt_long_only is happy with shortest unique string, but
696 // it's still a nice thing to do.) Otherwise return The string so the
697 // upper level code will know this is a full match and add the " ".
698 if (cur_opt_str && strlen(cur_opt_str) > 2 && cur_opt_str[0] == '-' &&
699 cur_opt_str[1] == '-' &&
700 strcmp(opt_defs[opt_defs_index].long_option, cur_opt_str) != 0) {
701 std::string full_name("--");
702 full_name.append(opt_defs[opt_defs_index].long_option);
703 request.AddCompletion(full_name.c_str());
706 request.AddCompletion(request.GetCursorArgument());
710 // FIXME - not handling wrong options yet:
711 // Check to see if they are writing a long option & complete it.
712 // I think we will only get in here if the long option table has two
714 // that are not unique up to this point. getopt_long_only does
715 // shortest unique match for long options already.
717 if (cur_opt_str && strlen(cur_opt_str) > 2 && cur_opt_str[0] == '-' &&
718 cur_opt_str[1] == '-') {
719 for (auto &def : opt_defs) {
720 if (!def.long_option)
723 if (strstr(def.long_option, cur_opt_str + 2) == def.long_option) {
724 std::string full_name("--");
725 full_name.append(def.long_option);
726 request.AddCompletion(full_name.c_str());
733 } else if (opt_arg_pos == request.GetCursorIndex()) {
734 // Okay the cursor is on the completion of an argument. See if it has a
735 // completion, otherwise return no matches.
737 CompletionRequest subrequest = request;
738 subrequest.SetCursorCharPosition(subrequest.GetCursorArgument().size());
739 if (opt_defs_index != -1) {
740 HandleOptionArgumentCompletion(subrequest, opt_element_vector, i,
742 request.SetWordComplete(subrequest.GetWordComplete());
745 // No completion callback means no completions...
750 // Not the last element, keep going.
757 bool Options::HandleOptionArgumentCompletion(
758 CompletionRequest &request, OptionElementVector &opt_element_vector,
759 int opt_element_index, CommandInterpreter &interpreter) {
760 auto opt_defs = GetDefinitions();
761 std::unique_ptr<SearchFilter> filter_up;
763 int opt_arg_pos = opt_element_vector[opt_element_index].opt_arg_pos;
764 int opt_defs_index = opt_element_vector[opt_element_index].opt_defs_index;
766 // See if this is an enumeration type option, and if so complete it here:
768 const auto &enum_values = opt_defs[opt_defs_index].enum_values;
769 if (!enum_values.empty()) {
770 bool return_value = false;
771 std::string match_string(
772 request.GetParsedLine().GetArgumentAtIndex(opt_arg_pos),
773 request.GetParsedLine().GetArgumentAtIndex(opt_arg_pos) +
774 request.GetCursorCharPosition());
776 for (const auto &enum_value : enum_values) {
777 if (strstr(enum_value.string_value, match_string.c_str()) ==
778 enum_value.string_value) {
779 request.AddCompletion(enum_value.string_value);
786 // If this is a source file or symbol type completion, and there is a -shlib
787 // option somewhere in the supplied arguments, then make a search filter for
788 // that shared library.
789 // FIXME: Do we want to also have an "OptionType" so we don't have to match
792 uint32_t completion_mask = opt_defs[opt_defs_index].completion_type;
794 if (completion_mask == 0) {
795 lldb::CommandArgumentType option_arg_type =
796 opt_defs[opt_defs_index].argument_type;
797 if (option_arg_type != eArgTypeNone) {
798 const CommandObject::ArgumentTableEntry *arg_entry =
799 CommandObject::FindArgumentDataByType(
800 opt_defs[opt_defs_index].argument_type);
802 completion_mask = arg_entry->completion_type;
806 if (completion_mask & CommandCompletions::eSourceFileCompletion ||
807 completion_mask & CommandCompletions::eSymbolCompletion) {
808 for (size_t i = 0; i < opt_element_vector.size(); i++) {
809 int cur_defs_index = opt_element_vector[i].opt_defs_index;
811 // trying to use <0 indices will definitely cause problems
812 if (cur_defs_index == OptionArgElement::eUnrecognizedArg ||
813 cur_defs_index == OptionArgElement::eBareDash ||
814 cur_defs_index == OptionArgElement::eBareDoubleDash)
817 int cur_arg_pos = opt_element_vector[i].opt_arg_pos;
818 const char *cur_opt_name = opt_defs[cur_defs_index].long_option;
820 // If this is the "shlib" option and there was an argument provided,
821 // restrict it to that shared library.
822 if (cur_opt_name && strcmp(cur_opt_name, "shlib") == 0 &&
824 const char *module_name =
825 request.GetParsedLine().GetArgumentAtIndex(cur_arg_pos);
827 FileSpec module_spec(module_name);
828 lldb::TargetSP target_sp =
829 interpreter.GetDebugger().GetSelectedTarget();
830 // Search filters require a target...
832 filter_up.reset(new SearchFilterByModule(target_sp, module_spec));
839 return CommandCompletions::InvokeCommonCompletionCallbacks(
840 interpreter, completion_mask, request, filter_up.get());
843 void OptionGroupOptions::Append(OptionGroup *group) {
844 auto group_option_defs = group->GetDefinitions();
845 for (uint32_t i = 0; i < group_option_defs.size(); ++i) {
846 m_option_infos.push_back(OptionInfo(group, i));
847 m_option_defs.push_back(group_option_defs[i]);
851 const OptionGroup *OptionGroupOptions::GetGroupWithOption(char short_opt) {
852 for (uint32_t i = 0; i < m_option_defs.size(); i++) {
853 OptionDefinition opt_def = m_option_defs[i];
854 if (opt_def.short_option == short_opt)
855 return m_option_infos[i].option_group;
860 void OptionGroupOptions::Append(OptionGroup *group, uint32_t src_mask,
862 auto group_option_defs = group->GetDefinitions();
863 for (uint32_t i = 0; i < group_option_defs.size(); ++i) {
864 if (group_option_defs[i].usage_mask & src_mask) {
865 m_option_infos.push_back(OptionInfo(group, i));
866 m_option_defs.push_back(group_option_defs[i]);
867 m_option_defs.back().usage_mask = dst_mask;
872 void OptionGroupOptions::Finalize() {
873 m_did_finalize = true;
876 Status OptionGroupOptions::SetOptionValue(uint32_t option_idx,
877 llvm::StringRef option_value,
878 ExecutionContext *execution_context) {
879 // After calling OptionGroupOptions::Append(...), you must finalize the
880 // groups by calling OptionGroupOptions::Finlize()
881 assert(m_did_finalize);
883 if (option_idx < m_option_infos.size()) {
884 error = m_option_infos[option_idx].option_group->SetOptionValue(
885 m_option_infos[option_idx].option_index, option_value,
889 error.SetErrorString("invalid option index"); // Shouldn't happen...
894 void OptionGroupOptions::OptionParsingStarting(
895 ExecutionContext *execution_context) {
896 std::set<OptionGroup *> group_set;
897 OptionInfos::iterator pos, end = m_option_infos.end();
898 for (pos = m_option_infos.begin(); pos != end; ++pos) {
899 OptionGroup *group = pos->option_group;
900 if (group_set.find(group) == group_set.end()) {
901 group->OptionParsingStarting(execution_context);
902 group_set.insert(group);
907 OptionGroupOptions::OptionParsingFinished(ExecutionContext *execution_context) {
908 std::set<OptionGroup *> group_set;
910 OptionInfos::iterator pos, end = m_option_infos.end();
911 for (pos = m_option_infos.begin(); pos != end; ++pos) {
912 OptionGroup *group = pos->option_group;
913 if (group_set.find(group) == group_set.end()) {
914 error = group->OptionParsingFinished(execution_context);
915 group_set.insert(group);
923 // OptionParser permutes the arguments while processing them, so we create a
924 // temporary array holding to avoid modification of the input arguments. The
925 // options themselves are never modified, but the API expects a char * anyway,
926 // hence the const_cast.
927 static std::vector<char *> GetArgvForParsing(const Args &args) {
928 std::vector<char *> result;
929 // OptionParser always skips the first argument as it is based on getopt().
930 result.push_back(const_cast<char *>("<FAKE-ARG0>"));
931 for (const Args::ArgEntry &entry : args)
932 result.push_back(const_cast<char *>(entry.c_str()));
933 result.push_back(nullptr);
937 // Given a permuted argument, find it's position in the original Args vector.
938 static Args::const_iterator FindOriginalIter(const char *arg,
939 const Args &original) {
940 return llvm::find_if(
941 original, [arg](const Args::ArgEntry &D) { return D.c_str() == arg; });
944 // Given a permuted argument, find it's index in the original Args vector.
945 static size_t FindOriginalIndex(const char *arg, const Args &original) {
946 return std::distance(original.begin(), FindOriginalIter(arg, original));
949 // Construct a new Args object, consisting of the entries from the original
950 // arguments, but in the permuted order.
951 static Args ReconstituteArgsAfterParsing(llvm::ArrayRef<char *> parsed,
952 const Args &original) {
954 for (const char *arg : parsed) {
955 auto pos = FindOriginalIter(arg, original);
956 assert(pos != original.end());
957 result.AppendArgument(pos->ref, pos->quote);
962 static size_t FindArgumentIndexForOption(const Args &args,
963 const Option &long_option) {
964 std::string short_opt = llvm::formatv("-{0}", char(long_option.val)).str();
965 std::string long_opt =
966 llvm::formatv("--{0}", long_option.definition->long_option);
967 for (const auto &entry : llvm::enumerate(args)) {
968 if (entry.value().ref.startswith(short_opt) ||
969 entry.value().ref.startswith(long_opt))
970 return entry.index();
976 static std::string BuildShortOptions(const Option *long_options) {
978 llvm::raw_string_ostream sstr(storage);
980 // Leading : tells getopt to return a : for a missing option argument AND to
981 // suppress error messages.
984 for (size_t i = 0; long_options[i].definition != nullptr; ++i) {
985 if (long_options[i].flag == nullptr) {
986 sstr << (char)long_options[i].val;
987 switch (long_options[i].definition->option_has_arg) {
989 case OptionParser::eNoArgument:
991 case OptionParser::eRequiredArgument:
994 case OptionParser::eOptionalArgument:
1000 return std::move(sstr.str());
1003 llvm::Expected<Args> Options::ParseAlias(const Args &args,
1004 OptionArgVector *option_arg_vector,
1005 std::string &input_line) {
1006 Option *long_options = GetLongOptions();
1008 if (long_options == nullptr) {
1009 return llvm::make_error<llvm::StringError>("Invalid long options",
1010 llvm::inconvertibleErrorCode());
1013 std::string short_options = BuildShortOptions(long_options);
1015 Args args_copy = args;
1016 std::vector<char *> argv = GetArgvForParsing(args);
1018 std::unique_lock<std::mutex> lock;
1019 OptionParser::Prepare(lock);
1022 int long_options_index = -1;
1023 val = OptionParser::Parse(argv, short_options, long_options,
1024 &long_options_index);
1027 return llvm::createStringError(llvm::inconvertibleErrorCode(),
1028 "last option requires an argument");
1035 return llvm::make_error<llvm::StringError>(
1036 "Unknown or ambiguous option", llvm::inconvertibleErrorCode());
1044 // Look up the long option index
1045 if (long_options_index == -1) {
1046 for (int j = 0; long_options[j].definition || long_options[j].flag ||
1047 long_options[j].val;
1049 if (long_options[j].val == val) {
1050 long_options_index = j;
1056 // See if the option takes an argument, and see if one was supplied.
1057 if (long_options_index == -1) {
1058 return llvm::make_error<llvm::StringError>(
1059 llvm::formatv("Invalid option with value '{0}'.", char(val)).str(),
1060 llvm::inconvertibleErrorCode());
1063 StreamString option_str;
1064 option_str.Printf("-%c", val);
1065 const OptionDefinition *def = long_options[long_options_index].definition;
1067 (def == nullptr) ? OptionParser::eNoArgument : def->option_has_arg;
1069 const char *option_arg = nullptr;
1071 case OptionParser::eRequiredArgument:
1072 if (OptionParser::GetOptionArgument() == nullptr) {
1073 return llvm::make_error<llvm::StringError>(
1074 llvm::formatv("Option '{0}' is missing argument specifier.",
1075 option_str.GetString())
1077 llvm::inconvertibleErrorCode());
1080 case OptionParser::eOptionalArgument:
1081 option_arg = OptionParser::GetOptionArgument();
1083 case OptionParser::eNoArgument:
1086 return llvm::make_error<llvm::StringError>(
1087 llvm::formatv("error with options table; invalid value in has_arg "
1088 "field for option '{0}'.",
1091 llvm::inconvertibleErrorCode());
1094 option_arg = "<no-argument>";
1095 option_arg_vector->emplace_back(option_str.GetString(), has_arg,
1098 // Find option in the argument list; also see if it was supposed to take an
1099 // argument and if one was supplied. Remove option (and argument, if
1100 // given) from the argument list. Also remove them from the
1101 // raw_input_string, if one was passed in.
1103 FindArgumentIndexForOption(args_copy, long_options[long_options_index]);
1104 if (idx == size_t(-1))
1107 if (!input_line.empty()) {
1108 auto tmp_arg = args_copy[idx].ref;
1109 size_t pos = input_line.find(tmp_arg);
1110 if (pos != std::string::npos)
1111 input_line.erase(pos, tmp_arg.size());
1113 args_copy.DeleteArgumentAtIndex(idx);
1114 if ((long_options[long_options_index].definition->option_has_arg !=
1115 OptionParser::eNoArgument) &&
1116 (OptionParser::GetOptionArgument() != nullptr) &&
1117 (idx < args_copy.GetArgumentCount()) &&
1118 (args_copy[idx].ref == OptionParser::GetOptionArgument())) {
1119 if (input_line.size() > 0) {
1120 auto tmp_arg = args_copy[idx].ref;
1121 size_t pos = input_line.find(tmp_arg);
1122 if (pos != std::string::npos)
1123 input_line.erase(pos, tmp_arg.size());
1125 args_copy.DeleteArgumentAtIndex(idx);
1129 return std::move(args_copy);
1132 OptionElementVector Options::ParseForCompletion(const Args &args,
1133 uint32_t cursor_index) {
1134 OptionElementVector option_element_vector;
1135 Option *long_options = GetLongOptions();
1136 option_element_vector.clear();
1138 if (long_options == nullptr)
1139 return option_element_vector;
1141 std::string short_options = BuildShortOptions(long_options);
1143 std::unique_lock<std::mutex> lock;
1144 OptionParser::Prepare(lock);
1145 OptionParser::EnableError(false);
1148 auto opt_defs = GetDefinitions();
1150 std::vector<char *> dummy_vec = GetArgvForParsing(args);
1152 bool failed_once = false;
1153 uint32_t dash_dash_pos = -1;
1156 bool missing_argument = false;
1157 int long_options_index = -1;
1159 val = OptionParser::Parse(dummy_vec, short_options, long_options,
1160 &long_options_index);
1163 // When we're completing a "--" which is the last option on line,
1169 // If this is a bare "--" we mark it as such so we can complete it
1170 // successfully later. Handling the "--" is a little tricky, since that
1171 // may mean end of options or arguments, or the user might want to
1172 // complete options by long name. I make this work by checking whether
1173 // the cursor is in the "--" argument, and if so I assume we're
1174 // completing the long option, otherwise I let it pass to
1175 // OptionParser::Parse which will terminate the option parsing. Note, in
1176 // either case we continue parsing the line so we can figure out what
1177 // other options were passed. This will be useful when we come to
1178 // restricting completions based on what other options we've seen on the
1181 if (static_cast<size_t>(OptionParser::GetOptionIndex()) <
1183 (strcmp(dummy_vec[OptionParser::GetOptionIndex() - 1], "--") == 0)) {
1184 dash_dash_pos = FindOriginalIndex(
1185 dummy_vec[OptionParser::GetOptionIndex() - 1], args);
1186 if (dash_dash_pos == cursor_index) {
1187 option_element_vector.push_back(
1188 OptionArgElement(OptionArgElement::eBareDoubleDash, dash_dash_pos,
1189 OptionArgElement::eBareDoubleDash));
1195 } else if (val == '?') {
1196 option_element_vector.push_back(OptionArgElement(
1197 OptionArgElement::eUnrecognizedArg,
1198 FindOriginalIndex(dummy_vec[OptionParser::GetOptionIndex() - 1],
1200 OptionArgElement::eUnrecognizedArg));
1202 } else if (val == 0) {
1204 } else if (val == ':') {
1205 // This is a missing argument.
1206 val = OptionParser::GetOptionErrorCause();
1207 missing_argument = true;
1212 // Look up the long option index
1213 if (long_options_index == -1) {
1214 for (int j = 0; long_options[j].definition || long_options[j].flag ||
1215 long_options[j].val;
1217 if (long_options[j].val == val) {
1218 long_options_index = j;
1224 // See if the option takes an argument, and see if one was supplied.
1225 if (long_options_index >= 0) {
1226 int opt_defs_index = -1;
1227 for (size_t i = 0; i < opt_defs.size(); i++) {
1228 if (opt_defs[i].short_option != val)
1234 const OptionDefinition *def = long_options[long_options_index].definition;
1236 (def == nullptr) ? OptionParser::eNoArgument : def->option_has_arg;
1238 case OptionParser::eNoArgument:
1239 option_element_vector.push_back(OptionArgElement(
1241 FindOriginalIndex(dummy_vec[OptionParser::GetOptionIndex() - 1],
1245 case OptionParser::eRequiredArgument:
1246 if (OptionParser::GetOptionArgument() != nullptr) {
1248 if (missing_argument)
1251 arg_index = OptionParser::GetOptionIndex() - 2;
1253 option_element_vector.push_back(OptionArgElement(
1255 FindOriginalIndex(dummy_vec[OptionParser::GetOptionIndex() - 2],
1259 option_element_vector.push_back(OptionArgElement(
1261 FindOriginalIndex(dummy_vec[OptionParser::GetOptionIndex() - 1],
1266 case OptionParser::eOptionalArgument:
1267 if (OptionParser::GetOptionArgument() != nullptr) {
1268 option_element_vector.push_back(OptionArgElement(
1270 FindOriginalIndex(dummy_vec[OptionParser::GetOptionIndex() - 2],
1272 FindOriginalIndex(dummy_vec[OptionParser::GetOptionIndex() - 1],
1275 option_element_vector.push_back(OptionArgElement(
1277 FindOriginalIndex(dummy_vec[OptionParser::GetOptionIndex() - 2],
1279 FindOriginalIndex(dummy_vec[OptionParser::GetOptionIndex() - 1],
1284 // The options table is messed up. Here we'll just continue
1285 option_element_vector.push_back(OptionArgElement(
1286 OptionArgElement::eUnrecognizedArg,
1287 FindOriginalIndex(dummy_vec[OptionParser::GetOptionIndex() - 1],
1289 OptionArgElement::eUnrecognizedArg));
1293 option_element_vector.push_back(OptionArgElement(
1294 OptionArgElement::eUnrecognizedArg,
1295 FindOriginalIndex(dummy_vec[OptionParser::GetOptionIndex() - 1],
1297 OptionArgElement::eUnrecognizedArg));
1301 // Finally we have to handle the case where the cursor index points at a
1302 // single "-". We want to mark that in the option_element_vector, but only
1303 // if it is not after the "--". But it turns out that OptionParser::Parse
1304 // just ignores an isolated "-". So we have to look it up by hand here. We
1305 // only care if it is AT the cursor position. Note, a single quoted dash is
1306 // not the same as a single dash...
1308 const Args::ArgEntry &cursor = args[cursor_index];
1309 if ((static_cast<int32_t>(dash_dash_pos) == -1 ||
1310 cursor_index < dash_dash_pos) &&
1311 !cursor.IsQuoted() && cursor.ref == "-") {
1312 option_element_vector.push_back(
1313 OptionArgElement(OptionArgElement::eBareDash, cursor_index,
1314 OptionArgElement::eBareDash));
1316 return option_element_vector;
1319 llvm::Expected<Args> Options::Parse(const Args &args,
1320 ExecutionContext *execution_context,
1321 lldb::PlatformSP platform_sp,
1322 bool require_validation) {
1324 Option *long_options = GetLongOptions();
1325 if (long_options == nullptr) {
1326 return llvm::make_error<llvm::StringError>("Invalid long options.",
1327 llvm::inconvertibleErrorCode());
1330 std::string short_options = BuildShortOptions(long_options);
1331 std::vector<char *> argv = GetArgvForParsing(args);
1332 std::unique_lock<std::mutex> lock;
1333 OptionParser::Prepare(lock);
1336 int long_options_index = -1;
1337 val = OptionParser::Parse(argv, short_options, long_options,
1338 &long_options_index);
1341 error.SetErrorStringWithFormat("last option requires an argument");
1348 // Did we get an error?
1350 error.SetErrorStringWithFormat("unknown or ambiguous option");
1353 // The option auto-set itself
1359 // Lookup the long option index
1360 if (long_options_index == -1) {
1361 for (int i = 0; long_options[i].definition || long_options[i].flag ||
1362 long_options[i].val;
1364 if (long_options[i].val == val) {
1365 long_options_index = i;
1370 // Call the callback with the option
1371 if (long_options_index >= 0 &&
1372 long_options[long_options_index].definition) {
1373 const OptionDefinition *def = long_options[long_options_index].definition;
1376 // User did not pass in an explicit platform. Try to grab from the
1377 // execution context.
1378 TargetSP target_sp =
1379 execution_context ? execution_context->GetTargetSP() : TargetSP();
1380 platform_sp = target_sp ? target_sp->GetPlatform() : PlatformSP();
1382 OptionValidator *validator = def->validator;
1384 if (!platform_sp && require_validation) {
1385 // Caller requires validation but we cannot validate as we don't have
1386 // the mandatory platform against which to validate.
1387 return llvm::make_error<llvm::StringError>(
1388 "cannot validate options: no platform available",
1389 llvm::inconvertibleErrorCode());
1392 bool validation_failed = false;
1394 // Ensure we have an execution context, empty or not.
1395 ExecutionContext dummy_context;
1396 ExecutionContext *exe_ctx_p =
1397 execution_context ? execution_context : &dummy_context;
1398 if (validator && !validator->IsValid(*platform_sp, *exe_ctx_p)) {
1399 validation_failed = true;
1400 error.SetErrorStringWithFormat("Option \"%s\" invalid. %s",
1402 def->validator->LongConditionString());
1406 // As long as validation didn't fail, we set the option value.
1407 if (!validation_failed)
1409 SetOptionValue(long_options_index,
1410 (def->option_has_arg == OptionParser::eNoArgument)
1412 : OptionParser::GetOptionArgument(),
1415 error.SetErrorStringWithFormat("invalid option with value '%i'", val);
1420 return error.ToError();
1423 argv.erase(argv.begin(), argv.begin() + OptionParser::GetOptionIndex());
1424 return ReconstituteArgsAfterParsing(argv, args);