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37 * Implements gmx::CommandLineHelpWriter.
39 * \author Teemu Murtola <teemu.murtola@gmail.com>
40 * \ingroup module_commandline
44 #include "cmdlinehelpwriter.h"
51 #include <boost/scoped_ptr.hpp>
53 #include "gromacs/commandline/cmdlinehelpcontext.h"
54 #include "gromacs/onlinehelp/helpwritercontext.h"
55 #include "gromacs/options/basicoptions.h"
56 #include "gromacs/options/filenameoption.h"
57 #include "gromacs/options/options.h"
58 #include "gromacs/options/optionsvisitor.h"
59 #include "gromacs/options/timeunitmanager.h"
60 #include "gromacs/utility/arrayref.h"
61 #include "gromacs/utility/exceptions.h"
62 #include "gromacs/utility/file.h"
63 #include "gromacs/utility/stringutil.h"
65 #include "shellcompletions.h"
73 //! \addtogroup module_commandline
76 /********************************************************************
77 * DescriptionsFormatter
80 class DescriptionsFormatter : public OptionsVisitor
84 * Creates a new description formatter.
86 * \param[in] context Help context to use to write the help.
88 explicit DescriptionsFormatter(const HelpWriterContext &context)
89 : context_(context), title_(NULL), bDidOutput_(false)
93 //! Formats all section descriptions from a given options.
94 void format(const Options &options, const char *title)
98 visitSubSection(options);
101 context_.outputFile().writeLine();
105 //! Formats the description for a single subsection and handles recursion.
106 virtual void visitSubSection(const Options §ion);
107 // This method is not used and never called.
108 virtual void visitOption(const OptionInfo & /*option*/) {}
111 const HelpWriterContext &context_;
115 GMX_DISALLOW_COPY_AND_ASSIGN(DescriptionsFormatter);
118 void DescriptionsFormatter::visitSubSection(const Options §ion)
120 if (!section.description().empty())
124 context_.outputFile().writeLine();
126 else if (title_ != NULL)
128 context_.writeTitle(title_);
130 // TODO: Print title for the section?
131 context_.writeTextBlock(section.description());
135 OptionsIterator iterator(section);
136 iterator.acceptSubSections(this);
139 /********************************************************************
140 * OptionsFormatterInterface
144 * Interface for output format specific formatting of options.
148 class OptionsFormatterInterface
151 virtual ~OptionsFormatterInterface() {}
153 //! Formats a single option option.
154 virtual void formatOption(const OptionInfo &option) = 0;
157 /********************************************************************
162 * Output format independent processing of options.
164 * Together with code in CommandLineHelpWriter::writeHelp(), this class
165 * implements the common logic for writing out the help.
166 * An object implementing the OptionsFormatterInterface must be provided to the
167 * constructor, and does the actual formatting that is specific to the output
170 class OptionsFilter : public OptionsVisitor
173 //! Specifies the type of output that formatSelected() produces.
176 eSelectInputFileOptions,
177 eSelectInputOutputFileOptions,
178 eSelectOutputFileOptions,
183 * Creates a new filtering object.
188 : formatter_(NULL), filterType_(eSelectOtherOptions),
193 //! Sets whether hidden options will be shown.
194 void setShowHidden(bool bShowHidden)
196 bShowHidden_ = bShowHidden;
199 //! Formats selected options using the formatter.
200 void formatSelected(FilterType type,
201 OptionsFormatterInterface *formatter,
202 const Options &options);
204 virtual void visitSubSection(const Options §ion);
205 virtual void visitOption(const OptionInfo &option);
208 OptionsFormatterInterface *formatter_;
209 FilterType filterType_;
212 GMX_DISALLOW_COPY_AND_ASSIGN(OptionsFilter);
215 void OptionsFilter::formatSelected(FilterType type,
216 OptionsFormatterInterface *formatter,
217 const Options &options)
219 formatter_ = formatter;
221 visitSubSection(options);
224 void OptionsFilter::visitSubSection(const Options §ion)
226 OptionsIterator iterator(section);
227 iterator.acceptSubSections(this);
228 iterator.acceptOptions(this);
231 void OptionsFilter::visitOption(const OptionInfo &option)
233 if (!bShowHidden_ && option.isHidden())
237 const FileNameOptionInfo *const fileOption = option.toType<FileNameOptionInfo>();
238 if (fileOption != NULL && fileOption->isInputFile())
240 if (filterType_ == eSelectInputFileOptions)
242 formatter_->formatOption(option);
246 if (fileOption != NULL && fileOption->isInputOutputFile())
248 if (filterType_ == eSelectInputOutputFileOptions)
250 formatter_->formatOption(option);
254 if (fileOption != NULL && fileOption->isOutputFile())
256 if (filterType_ == eSelectOutputFileOptions)
258 formatter_->formatOption(option);
262 if (filterType_ == eSelectOtherOptions)
264 formatter_->formatOption(option);
269 /********************************************************************
270 * CommonFormatterData
273 class CommonFormatterData
276 explicit CommonFormatterData(const char *timeUnit)
281 const char *timeUnit;
284 /********************************************************************
288 //! Formats option name and value.
289 void formatOptionNameAndValue(const OptionInfo &option, std::string *name,
292 *name = option.name();
293 *value = "<" + option.type() + ">";
294 if (option.isType<FileNameOptionInfo>())
296 // TODO: Make these work also for other option types.
297 if (option.maxValueCount() != 1)
301 if (option.minValueCount() == 0)
303 *value = "[" + *value + "]";
306 if (option.isType<BooleanOptionInfo>())
308 *name = "[no]" + *name;
309 // Old command-line parser doesn't accept any values for these.
310 // value = "[" + value + "]";
315 //! Formats the default option value as a string.
317 defaultOptionValue(const OptionInfo &option)
319 if (option.valueCount() == 0
320 || (option.valueCount() == 1 && option.formatValue(0).empty()))
322 return option.formatDefaultValueIfSet();
327 for (int i = 0; i < option.valueCount(); ++i)
333 result.append(option.formatValue(i));
339 //! Formats the flags for a file option as a string.
341 fileOptionFlagsAsString(const FileNameOptionInfo &option, bool bAbbrev)
344 if (!option.isRequired())
346 type = bAbbrev ? "Opt." : "Optional";
348 if (option.isLibraryFile())
354 type.append(bAbbrev ? "Lib." : "Library");
359 //! Formats the description for an option as a string.
361 descriptionWithOptionDetails(const CommonFormatterData &common,
362 const OptionInfo &option)
364 std::string description(option.formatDescription());
366 const FloatOptionInfo *floatOption = option.toType<FloatOptionInfo>();
367 const DoubleOptionInfo *doubleOption = option.toType<DoubleOptionInfo>();
368 if ((floatOption != NULL && floatOption->isTime())
369 || (doubleOption != NULL && doubleOption->isTime()))
371 // TODO: It could be nicer to have this in basicoptions.cpp.
372 description = replaceAll(description, "%t", common.timeUnit);
378 /********************************************************************
379 * OptionsSynopsisFormatter
383 * Formatter implementation for synopsis.
385 class SynopsisFormatter : public OptionsFormatterInterface
388 //! Creates a helper object for formatting the synopsis.
389 explicit SynopsisFormatter(const HelpWriterContext &context)
390 : context_(context), bFormatted_(false), lineLength_(0), indent_(0),
395 //! Starts formatting the synopsis.
396 void start(const char *name);
397 //! Finishes formatting the synopsis.
400 virtual void formatOption(const OptionInfo &option);
403 const HelpWriterContext &context_;
409 GMX_DISALLOW_COPY_AND_ASSIGN(SynopsisFormatter);
412 void SynopsisFormatter::start(const char *name)
414 currentLength_ = std::strlen(name) + 1;
415 indent_ = std::min(currentLength_, 13);
416 File &file = context_.outputFile();
417 switch (context_.outputFormat())
419 case eHelpOutputFormat_Console:
421 file.writeString(name);
423 case eHelpOutputFormat_Rst:
427 file.writeLine(".. parsed-literal::");
429 file.writeString(" ");
430 file.writeString(name);
433 GMX_THROW(NotImplementedError("Synopsis formatting not implemented for this output format"));
437 void SynopsisFormatter::finish()
439 File &file = context_.outputFile();
444 void SynopsisFormatter::formatOption(const OptionInfo &option)
446 std::string name, value;
447 formatOptionNameAndValue(option, &name, &value);
448 int totalLength = name.length() + 4;
449 std::string fullOptionText
450 = formatString(" [%s-%s", bFormatted_ ? ":strong:`" : "", name.c_str());
453 fullOptionText.append(bFormatted_ ? "` :emphasis:`" : " ");
454 fullOptionText.append(value);
455 totalLength += value.length() + 1;
457 fullOptionText.append(bFormatted_ ? "`]" : "]");
459 File &file = context_.outputFile();
460 currentLength_ += totalLength;
461 if (currentLength_ >= lineLength_)
463 file.writeString(formatString("\n%*c", indent_ - 1, ' '));
464 currentLength_ = indent_ - 1 + totalLength;
466 file.writeString(fullOptionText);
469 /********************************************************************
470 * OptionsListFormatter
474 * Formatter implementation for help export.
476 class OptionsListFormatter : public OptionsFormatterInterface
479 //! Creates a helper object for formatting options.
480 OptionsListFormatter(const HelpWriterContext &context,
481 const CommonFormatterData &common,
484 //! Initiates a new section in the options list.
485 void startSection(const char *header)
490 //! Finishes a section in the options list.
495 context_.writeOptionListEnd();
496 context_.outputFile().writeLine();
500 virtual void formatOption(const OptionInfo &option);
503 void writeSectionStartIfNecessary()
507 context_.writeTitle(title_);
514 context_.writeTextBlock(header_);
515 context_.writeTextBlock("");
517 context_.writeOptionListStart();
522 const HelpWriterContext &context_;
523 const CommonFormatterData &common_;
528 GMX_DISALLOW_COPY_AND_ASSIGN(OptionsListFormatter);
531 OptionsListFormatter::OptionsListFormatter(
532 const HelpWriterContext &context,
533 const CommonFormatterData &common,
535 : context_(context), common_(common),
536 title_(title), header_(NULL), bDidOutput_(false)
540 void OptionsListFormatter::formatOption(const OptionInfo &option)
542 writeSectionStartIfNecessary();
543 std::string name, value;
544 formatOptionNameAndValue(option, &name, &value);
545 std::string defaultValue(defaultOptionValue(option));
547 const FileNameOptionInfo *fileOption = option.toType<FileNameOptionInfo>();
548 if (fileOption != NULL)
550 const bool bAbbrev = (context_.outputFormat() == eHelpOutputFormat_Console);
551 info = fileOptionFlagsAsString(*fileOption, bAbbrev);
553 std::string description(descriptionWithOptionDetails(common_, option));
554 context_.writeOptionItem("-" + name, value, defaultValue, info, description);
561 /********************************************************************
562 * CommandLineHelpWriter::Impl
566 * Private implementation class for CommandLineHelpWriter.
568 * \ingroup module_commandline
570 class CommandLineHelpWriter::Impl
573 //! Sets the Options object to use for generating help.
574 explicit Impl(const Options &options);
576 //! Format the list of known issues.
577 void formatBugs(const HelpWriterContext &context);
579 //! Options object to use for generating help.
580 const Options &options_;
581 //! List of bugs/knows issues.
582 ConstArrayRef<const char *> bugs_;
583 //! Time unit to show in descriptions.
584 std::string timeUnit_;
585 //! Whether to write descriptions to output.
586 bool bShowDescriptions_;
589 CommandLineHelpWriter::Impl::Impl(const Options &options)
590 : options_(options), timeUnit_(TimeUnitManager().timeUnitAsString()),
591 bShowDescriptions_(false)
595 void CommandLineHelpWriter::Impl::formatBugs(const HelpWriterContext &context)
601 context.writeTitle("Known Issues");
602 ConstArrayRef<const char *>::const_iterator i;
603 for (i = bugs_.begin(); i != bugs_.end(); ++i)
605 const char *const bug = *i;
606 context.writeTextBlock(formatString("* %s", bug));
611 /********************************************************************
612 * CommandLineHelpWriter
615 CommandLineHelpWriter::CommandLineHelpWriter(const Options &options)
616 : impl_(new Impl(options))
620 CommandLineHelpWriter::~CommandLineHelpWriter()
624 CommandLineHelpWriter &
625 CommandLineHelpWriter::setShowDescriptions(bool bSet)
627 impl_->bShowDescriptions_ = bSet;
631 CommandLineHelpWriter &
632 CommandLineHelpWriter::setTimeUnitString(const char *timeUnit)
634 impl_->timeUnit_ = timeUnit;
638 CommandLineHelpWriter &
639 CommandLineHelpWriter::setKnownIssues(const ConstArrayRef<const char *> &bugs)
645 void CommandLineHelpWriter::writeHelp(const CommandLineHelpContext &context)
647 if (context.isCompletionExport())
649 context.shellCompletionWriter().writeModuleCompletions(
650 context.moduleDisplayName(), impl_->options_);
653 const HelpWriterContext &writerContext = context.writerContext();
654 OptionsFilter filter;
655 filter.setShowHidden(context.showHidden());
658 writerContext.writeTitle("Synopsis");
659 SynopsisFormatter synopsisFormatter(writerContext);
660 synopsisFormatter.start(context.moduleDisplayName());
661 filter.formatSelected(OptionsFilter::eSelectInputFileOptions,
662 &synopsisFormatter, impl_->options_);
663 filter.formatSelected(OptionsFilter::eSelectInputOutputFileOptions,
664 &synopsisFormatter, impl_->options_);
665 filter.formatSelected(OptionsFilter::eSelectOutputFileOptions,
666 &synopsisFormatter, impl_->options_);
667 filter.formatSelected(OptionsFilter::eSelectOtherOptions,
668 &synopsisFormatter, impl_->options_);
669 synopsisFormatter.finish();
672 if (impl_->bShowDescriptions_)
674 DescriptionsFormatter descriptionFormatter(writerContext);
675 descriptionFormatter.format(impl_->options_, "Description");
677 CommonFormatterData common(impl_->timeUnit_.c_str());
678 OptionsListFormatter formatter(writerContext, common, "Options");
679 formatter.startSection("Options to specify input files:");
680 filter.formatSelected(OptionsFilter::eSelectInputFileOptions,
681 &formatter, impl_->options_);
682 formatter.finishSection();
683 formatter.startSection("Options to specify input/output files:");
684 filter.formatSelected(OptionsFilter::eSelectInputOutputFileOptions,
685 &formatter, impl_->options_);
686 formatter.finishSection();
687 formatter.startSection("Options to specify output files:");
688 filter.formatSelected(OptionsFilter::eSelectOutputFileOptions,
689 &formatter, impl_->options_);
690 formatter.finishSection();
691 formatter.startSection("Other options:");
692 filter.formatSelected(OptionsFilter::eSelectOtherOptions,
693 &formatter, impl_->options_);
694 formatter.finishSection();
696 impl_->formatBugs(writerContext);