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37 * Implements gmx::CommandLineHelpModule.
39 * \author Teemu Murtola <teemu.murtola@gmail.com>
40 * \ingroup module_commandline
42 #include "gromacs/commandline/cmdlinehelpmodule.h"
47 #include <boost/scoped_ptr.hpp>
49 #include "gromacs/legacyheaders/copyrite.h"
51 #include "gromacs/commandline/cmdlinehelpcontext.h"
52 #include "gromacs/commandline/cmdlineparser.h"
53 #include "gromacs/onlinehelp/helpformat.h"
54 #include "gromacs/onlinehelp/helpmanager.h"
55 #include "gromacs/onlinehelp/helptopic.h"
56 #include "gromacs/onlinehelp/helpwritercontext.h"
57 #include "gromacs/options/basicoptions.h"
58 #include "gromacs/options/options.h"
59 #include "gromacs/utility/exceptions.h"
60 #include "gromacs/utility/file.h"
61 #include "gromacs/utility/gmxassert.h"
62 #include "gromacs/utility/programinfo.h"
63 #include "gromacs/utility/stringutil.h"
70 class HelpExportInterface;
74 /********************************************************************
75 * CommandLineHelpModuleImpl declaration
78 class CommandLineHelpModuleImpl
81 CommandLineHelpModuleImpl(const ProgramInfo &programInfo,
82 const std::string &binaryName,
83 const CommandLineModuleMap &modules,
84 const CommandLineModuleGroupList &groups);
86 void exportHelp(HelpExportInterface *exporter) const;
88 boost::scoped_ptr<RootHelpTopic> rootTopic_;
89 const ProgramInfo &programInfo_;
90 std::string binaryName_;
91 const CommandLineModuleMap &modules_;
92 const CommandLineModuleGroupList &groups_;
94 CommandLineHelpContext *context_;
95 const CommandLineModuleInterface *moduleOverride_;
98 GMX_DISALLOW_COPY_AND_ASSIGN(CommandLineHelpModuleImpl);
104 /********************************************************************
110 static const char name[];
111 static const char title[];
112 static const char *const text[];
115 // The first two are not used.
116 const char RootHelpText::name[] = "";
117 const char RootHelpText::title[] = "";
118 const char *const RootHelpText::text[] = {
119 "Usage: [PROGRAM] <command> [<args>]",
123 * Help topic that forms the root of the help tree for the help subcommand.
125 * \ingroup module_commandline
127 class RootHelpTopic : public CompositeHelpTopic<RootHelpText>
131 * Creates a root help topic.
133 * \param[in] modules List of modules for to use for module listings.
137 explicit RootHelpTopic(const CommandLineModuleMap &modules)
142 virtual void writeHelp(const HelpWriterContext &context) const;
145 void printModuleList(const HelpWriterContext &context) const;
147 const CommandLineModuleMap &modules_;
149 GMX_DISALLOW_COPY_AND_ASSIGN(RootHelpTopic);
152 void RootHelpTopic::writeHelp(const HelpWriterContext &context) const
154 if (context.outputFormat() != eHelpOutputFormat_Console)
156 // TODO: Implement once the situation with Redmine issue #969 is more
158 GMX_THROW(NotImplementedError(
159 "Root help is not implemented for this output format"));
161 writeBasicHelpTopic(context, *this, helpText());
162 // TODO: If/when this list becomes long, it may be better to only print
163 // "common" commands here, and have a separate topic (e.g.,
164 // "help commands") that prints the full list.
165 printModuleList(context);
166 context.writeTextBlock(
167 "For additional help on a command, use '[PROGRAM] help <command>'");
168 writeSubTopicList(context,
169 "\nAdditional help is available on the following topics:");
170 context.writeTextBlock(
171 "To access the help, use '[PROGRAM] help <topic>'.");
174 void RootHelpTopic::printModuleList(const HelpWriterContext &context) const
176 if (context.outputFormat() != eHelpOutputFormat_Console)
178 // TODO: Implement once the situation with Redmine issue #969 is more
180 GMX_THROW(NotImplementedError(
181 "Module list is not implemented for this output format"));
183 int maxNameLength = 0;
184 CommandLineModuleMap::const_iterator module;
185 for (module = modules_.begin(); module != modules_.end(); ++module)
187 int nameLength = static_cast<int>(module->first.length());
188 if (module->second->shortDescription() != NULL
189 && nameLength > maxNameLength)
191 maxNameLength = nameLength;
194 File &file = context.outputFile();
195 TextTableFormatter formatter;
196 formatter.addColumn(NULL, maxNameLength + 1, false);
197 formatter.addColumn(NULL, 72 - maxNameLength, true);
198 formatter.setFirstColumnIndent(4);
200 file.writeLine("Available commands:");
201 for (module = modules_.begin(); module != modules_.end(); ++module)
203 const char *name = module->first.c_str();
204 const char *description = module->second->shortDescription();
205 if (description != NULL)
208 formatter.addColumnLine(0, name);
209 formatter.addColumnLine(1, description);
210 file.writeString(formatter.formatRow());
215 /********************************************************************
220 * Help topic wrapper for a command-line module.
222 * This class implements HelpTopicInterface such that it wraps a
223 * CommandLineModuleInterface, allowing subcommand "help <command>"
224 * to produce the help for "<command>".
226 * \ingroup module_commandline
228 class ModuleHelpTopic : public HelpTopicInterface
231 //! Constructs a help topic for a specific module.
232 ModuleHelpTopic(const CommandLineModuleInterface &module,
233 const CommandLineHelpModuleImpl &helpModule)
234 : module_(module), helpModule_(helpModule)
238 virtual const char *name() const { return module_.name(); }
239 virtual const char *title() const { return NULL; }
240 virtual bool hasSubTopics() const { return false; }
241 virtual const HelpTopicInterface *findSubTopic(const char * /*name*/) const
245 virtual void writeHelp(const HelpWriterContext &context) const;
248 const CommandLineModuleInterface &module_;
249 const CommandLineHelpModuleImpl &helpModule_;
251 GMX_DISALLOW_COPY_AND_ASSIGN(ModuleHelpTopic);
254 void ModuleHelpTopic::writeHelp(const HelpWriterContext & /*context*/) const
256 CommandLineHelpContext context(*helpModule_.context_);
257 const char *const program = helpModule_.binaryName_.c_str();
258 context.setModuleDisplayName(formatString("%s %s", program, module_.name()));
259 module_.writeHelp(context);
262 /********************************************************************
263 * HelpExportInterface
267 * Callbacks for exporting help information for command-line modules.
269 * \ingroup module_commandline
271 class HelpExportInterface
274 //! Shorthand for a list of modules contained in a group.
275 typedef CommandLineModuleGroupData::ModuleList ModuleGroupContents;
277 virtual ~HelpExportInterface() {};
280 * Called once before exporting individual modules.
282 * Can, e.g., open shared output files (e.g., if the output is written
283 * into a single file, or if a separate index is required) and write
286 virtual void startModuleExport() = 0;
288 * Called to export the help for each module.
290 * \param[in] module Module for which the help should be exported.
291 * \param[in] tag Unique tag for the module (gmx-something).
292 * \param[in] displayName Display name for the module (gmx something).
294 virtual void exportModuleHelp(
295 const CommandLineModuleInterface &module,
296 const std::string &tag,
297 const std::string &displayName) = 0;
299 * Called after all modules have been exported.
301 * Can close files opened in startModuleExport(), write footers to them
304 virtual void finishModuleExport() = 0;
307 * Called once before exporting module groups.
309 * Can, e.g., open a single output file for listing all the groups.
311 virtual void startModuleGroupExport() = 0;
313 * Called to export the help for each module group.
315 * \param[in] title Title for the group.
316 * \param[in] modules List of modules in the group.
318 virtual void exportModuleGroup(const char *title,
319 const ModuleGroupContents &modules) = 0;
321 * Called after all module groups have been exported.
323 * Can close files opened in startModuleGroupExport(), write footers to them
326 virtual void finishModuleGroupExport() = 0;
330 * Adds hyperlinks to modules within this binary.
332 * \param[in,out] links Links are added here.
333 * \param[in] helpModule Help module to get module information from.
334 * \throws std::bad_alloc if out of memory.
336 * Initializes a HelpLinks object with links to modules defined in
339 * \ingroup module_commandline
341 void initProgramLinks(HelpLinks *links, const CommandLineHelpModuleImpl &helpModule)
343 const char *const program = helpModule.binaryName_.c_str();
344 CommandLineModuleMap::const_iterator module;
345 for (module = helpModule.modules_.begin();
346 module != helpModule.modules_.end();
349 if (module->second->shortDescription() != NULL)
351 std::string linkName("[gmx-" + module->first + "]");
352 std::string targetName(
353 formatString("%s-%s", program, module->first.c_str()));
354 std::string displayName(
355 formatString("[TT]%s %s[tt]", program, module->first.c_str()));
356 links->addLink(linkName, targetName, displayName);
361 /********************************************************************
366 * Implements export for man pages.
368 * \ingroup module_commandline
370 class HelpExportMan : public HelpExportInterface
373 //! Initializes man page exporter.
374 explicit HelpExportMan(const CommandLineHelpModuleImpl &helpModule)
375 : links_(eHelpOutputFormat_Man)
377 initProgramLinks(&links_, helpModule);
380 virtual void startModuleExport() {}
381 virtual void exportModuleHelp(
382 const CommandLineModuleInterface &module,
383 const std::string &tag,
384 const std::string &displayName);
385 virtual void finishModuleExport() {}
387 virtual void startModuleGroupExport();
388 virtual void exportModuleGroup(const char *title,
389 const ModuleGroupContents &modules);
390 virtual void finishModuleGroupExport();
394 boost::scoped_ptr<File> man7File_;
395 std::string man7Footer_;
398 void HelpExportMan::exportModuleHelp(
399 const CommandLineModuleInterface &module,
400 const std::string &tag,
401 const std::string &displayName)
403 File file("man1/" + tag + ".1", "w");
405 // TODO: It would be nice to remove the VERSION prefix from the version
406 // string to make it shorter.
407 file.writeLine(formatString(".TH %s 1 \"\" \"%s\" \"GROMACS Manual\"\n",
410 file.writeLine(".SH NAME");
411 file.writeLine(formatString("%s - %s", tag.c_str(),
412 module.shortDescription()));
415 CommandLineHelpContext context(&file, eHelpOutputFormat_Man, &links_);
416 context.setModuleDisplayName(displayName);
417 module.writeHelp(context);
419 file.writeLine(".SH SEE ALSO");
420 file.writeLine(".BR gromacs(7)");
422 file.writeLine("More information about \\fBGROMACS\\fR is available at <\\fIhttp://www.gromacs.org/\\fR>.");
425 void HelpExportMan::startModuleGroupExport()
427 const char *const programListPlaceholder = "@PROGMANPAGES@";
429 const std::string man7Template = gmx::File::readToString("man7/gromacs.7.in");
430 const size_t index = man7Template.find(programListPlaceholder);
431 GMX_RELEASE_ASSERT(index != std::string::npos,
432 "gromacs.7.in must contain a @PROGMANPAGES@ line");
433 std::string header = man7Template.substr(0, index);
434 man7Footer_ = man7Template.substr(index + std::strlen(programListPlaceholder));
435 header = replaceAll(header, "@VERSION@", GromacsVersion());
436 man7File_.reset(new File("man7/gromacs.7", "w"));
437 man7File_->writeLine(header);
440 void HelpExportMan::exportModuleGroup(const char *title,
441 const ModuleGroupContents &modules)
443 man7File_->writeLine(formatString(".Sh \"%s\"", title));
444 man7File_->writeLine(formatString(".IX Subsection \"%s\"", title));
445 man7File_->writeLine(".Vb");
446 man7File_->writeLine(".ta 16n");
448 ModuleGroupContents::const_iterator module;
449 for (module = modules.begin(); module != modules.end(); ++module)
451 const std::string &tag(module->first);
452 man7File_->writeLine(formatString("\\& %s\t%s",
453 tag.c_str(), module->second));
456 man7File_->writeLine(".Ve");
459 void HelpExportMan::finishModuleGroupExport()
461 man7File_->writeLine(man7Footer_);
465 /********************************************************************
470 * Implements export for HTML help.
472 * \ingroup module_commandline
474 class HelpExportHtml : public HelpExportInterface
477 //! Initializes HTML exporter.
478 explicit HelpExportHtml(const CommandLineHelpModuleImpl &helpModule);
480 virtual void startModuleExport();
481 virtual void exportModuleHelp(
482 const CommandLineModuleInterface &module,
483 const std::string &tag,
484 const std::string &displayName);
485 virtual void finishModuleExport();
487 virtual void startModuleGroupExport();
488 virtual void exportModuleGroup(const char *title,
489 const ModuleGroupContents &modules);
490 virtual void finishModuleGroupExport();
493 void setupHeaderAndFooter();
495 void writeHtmlHeader(File *file, const std::string &title) const;
496 void writeHtmlFooter(File *file) const;
499 boost::scoped_ptr<File> indexFile_;
504 HelpExportHtml::HelpExportHtml(const CommandLineHelpModuleImpl &helpModule)
505 : links_(eHelpOutputFormat_Html)
507 initProgramLinks(&links_, helpModule);
508 File linksFile("links.dat", "r");
510 while (linksFile.readLine(&line))
512 links_.addLink(line, "../online/" + line, line);
515 setupHeaderAndFooter();
518 void HelpExportHtml::setupHeaderAndFooter()
520 header_ = gmx::File::readToString("header.html.in");
521 header_ = replaceAll(header_, "@VERSION@", GromacsVersion());
522 gmx::File::writeFileFromString("header.html", header_);
523 header_ = replaceAll(header_, "@ROOTPATH@", "../");
524 footer_ = gmx::File::readToString("footer.html");
527 void HelpExportHtml::startModuleExport()
529 indexFile_.reset(new File("final/programs/byname.html", "w"));
530 writeHtmlHeader(indexFile_.get(), "GROMACS Programs by Name");
531 indexFile_->writeLine("<H3>GROMACS Programs Alphabetically</H3>");
534 void HelpExportHtml::exportModuleHelp(
535 const CommandLineModuleInterface &module,
536 const std::string &tag,
537 const std::string &displayName)
539 File file("final/programs/" + tag + ".html", "w");
540 writeHtmlHeader(&file, displayName);
542 CommandLineHelpContext context(&file, eHelpOutputFormat_Html, &links_);
543 context.setModuleDisplayName(displayName);
544 module.writeHelp(context);
546 writeHtmlFooter(&file);
549 indexFile_->writeLine(formatString("<a href=\"%s.html\">%s</a> - %s<br>",
550 tag.c_str(), displayName.c_str(),
551 module.shortDescription()));
554 void HelpExportHtml::finishModuleExport()
556 writeHtmlFooter(indexFile_.get());
560 void HelpExportHtml::startModuleGroupExport()
562 indexFile_.reset(new File("final/programs/bytopic.html", "w"));
563 writeHtmlHeader(indexFile_.get(), "GROMACS Programs by Topic");
564 indexFile_->writeLine("<H3>GROMACS Programs by Topic</H3>");
567 void HelpExportHtml::exportModuleGroup(const char *title,
568 const ModuleGroupContents &modules)
570 indexFile_->writeLine(formatString("<H4>%s</H4>", title));
572 ModuleGroupContents::const_iterator module;
573 for (module = modules.begin(); module != modules.end(); ++module)
575 const std::string &tag(module->first);
576 std::string displayName(tag);
577 std::replace(displayName.begin(), displayName.end(), '-', ' ');
578 indexFile_->writeLine(formatString("<a href=\"%s.html\">%s</a> - %s<br>",
579 tag.c_str(), displayName.c_str(),
584 void HelpExportHtml::finishModuleGroupExport()
586 writeHtmlFooter(indexFile_.get());
590 void HelpExportHtml::writeHtmlHeader(File *file, const std::string &title) const
592 file->writeLine(replaceAll(header_, "@TITLE@", title));
595 void HelpExportHtml::writeHtmlFooter(File *file) const
597 file->writeLine(footer_);
602 /********************************************************************
603 * CommandLineHelpModuleImpl implementation
605 CommandLineHelpModuleImpl::CommandLineHelpModuleImpl(
606 const ProgramInfo &programInfo,
607 const std::string &binaryName,
608 const CommandLineModuleMap &modules,
609 const CommandLineModuleGroupList &groups)
610 : rootTopic_(new RootHelpTopic(modules)), programInfo_(programInfo),
611 binaryName_(binaryName), modules_(modules), groups_(groups),
612 context_(NULL), moduleOverride_(NULL), bHidden_(false)
616 void CommandLineHelpModuleImpl::exportHelp(HelpExportInterface *exporter) const
618 // TODO: Would be nicer to have the file names supplied by the build system
619 // and/or export a list of files from here.
620 const char *const program = binaryName_.c_str();
622 exporter->startModuleExport();
623 CommandLineModuleMap::const_iterator module;
624 for (module = modules_.begin(); module != modules_.end(); ++module)
626 if (module->second->shortDescription() != NULL)
628 const char *const moduleName = module->first.c_str();
629 std::string tag(formatString("%s-%s", program, moduleName));
630 std::string displayName(tag);
631 std::replace(displayName.begin(), displayName.end(), '-', ' ');
632 exporter->exportModuleHelp(*module->second, tag, displayName);
635 exporter->finishModuleExport();
637 exporter->startModuleGroupExport();
638 CommandLineModuleGroupList::const_iterator group;
639 for (group = groups_.begin(); group != groups_.end(); ++group)
641 exporter->exportModuleGroup((*group)->title(), (*group)->modules());
643 exporter->finishModuleGroupExport();
646 /********************************************************************
647 * CommandLineHelpModule
650 CommandLineHelpModule::CommandLineHelpModule(
651 const ProgramInfo &programInfo,
652 const std::string &binaryName,
653 const CommandLineModuleMap &modules,
654 const CommandLineModuleGroupList &groups)
655 : impl_(new Impl(programInfo, binaryName, modules, groups))
659 CommandLineHelpModule::~CommandLineHelpModule()
663 HelpTopicPointer CommandLineHelpModule::createModuleHelpTopic(
664 const CommandLineModuleInterface &module) const
666 return HelpTopicPointer(new ModuleHelpTopic(module, *impl_));
669 void CommandLineHelpModule::addTopic(HelpTopicPointer topic)
671 impl_->rootTopic_->addSubTopic(move(topic));
674 void CommandLineHelpModule::setShowHidden(bool bHidden)
676 impl_->bHidden_ = bHidden;
679 void CommandLineHelpModule::setModuleOverride(
680 const CommandLineModuleInterface &module)
682 impl_->moduleOverride_ = &module;
685 int CommandLineHelpModule::run(int argc, char *argv[])
687 const char *const exportFormats[] = { "man", "html", "completion" };
688 std::string exportFormat;
689 Options options(NULL, NULL);
690 options.addOption(StringOption("export").store(&exportFormat)
691 .enumValue(exportFormats));
692 CommandLineParser(&options).parse(&argc, argv);
693 if (!exportFormat.empty())
695 boost::scoped_ptr<HelpExportInterface> exporter;
696 if (exportFormat == "man")
698 exporter.reset(new HelpExportMan(*impl_));
700 else if (exportFormat == "html")
702 exporter.reset(new HelpExportHtml(*impl_));
706 GMX_THROW(NotImplementedError("This help format is not implemented"));
708 impl_->exportHelp(exporter.get());
712 HelpLinks links(eHelpOutputFormat_Console);
713 initProgramLinks(&links, *impl_);
714 boost::scoped_ptr<CommandLineHelpContext> context(
715 new CommandLineHelpContext(&File::standardOutput(),
716 eHelpOutputFormat_Console, &links));
717 context->setShowHidden(impl_->bHidden_);
718 if (impl_->moduleOverride_ != NULL)
720 context->setModuleDisplayName(impl_->programInfo_.displayName());
721 impl_->moduleOverride_->writeHelp(*context);
724 impl_->context_ = context.get();
726 HelpManager helpManager(*impl_->rootTopic_, context->writerContext());
729 for (int i = 1; i < argc; ++i)
731 helpManager.enterTopic(argv[i]);
734 catch (const InvalidInputError &ex)
736 fprintf(stderr, "%s\n", ex.what());
739 helpManager.writeCurrentTopic();
743 void CommandLineHelpModule::writeHelp(const CommandLineHelpContext &context) const
745 const HelpWriterContext &writerContext = context.writerContext();
747 if (writerContext.outputFormat() != eHelpOutputFormat_Console)
751 writerContext.writeTextBlock(
752 "Usage: [PROGRAM] help [<command>|<topic> [<subtopic> [...]]]");
753 // TODO: More information.