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37 * Implements gmx::CommandLineHelpWriter.
39 * \author Teemu Murtola <teemu.murtola@gmail.com>
40 * \ingroup module_commandline
42 #include "cmdlinehelpwriter.h"
46 #include <boost/scoped_ptr.hpp>
48 #include "gromacs/commandline/cmdlinehelpcontext.h"
49 #include "gromacs/onlinehelp/helpformat.h"
50 #include "gromacs/onlinehelp/helpwritercontext.h"
51 #include "gromacs/options/basicoptions.h"
52 #include "gromacs/options/filenameoption.h"
53 #include "gromacs/options/options.h"
54 #include "gromacs/options/optionsvisitor.h"
55 #include "gromacs/options/timeunitmanager.h"
56 #include "gromacs/utility/exceptions.h"
57 #include "gromacs/utility/file.h"
58 #include "gromacs/utility/stringutil.h"
66 //! \addtogroup module_commandline
69 /********************************************************************
70 * OptionsFormatterInterface
74 * Interface for output format specific formatting of options.
78 class OptionsFormatterInterface
81 virtual ~OptionsFormatterInterface() {}
83 //! Formats the description text block for a section.
84 virtual void formatDescription(const HelpWriterContext &context,
85 const Options §ion) = 0;
86 //! Formats a single file option.
87 virtual void formatFileOption(const HelpWriterContext &context,
88 const FileNameOptionInfo &option) = 0;
89 //! Formats a single non-file, non-selection option.
90 virtual void formatOption(const HelpWriterContext &context,
91 const OptionInfo &option) = 0;
94 /********************************************************************
99 * Output format independent processing of options.
101 * Together with code in CommandLineHelpWriter::writeHelp(), this class
102 * implements the common logic for writing out the help.
103 * An object implementing the OptionsFormatterInterface must be provided to the
104 * constructor, and does the actual formatting that is specific to the output
107 class OptionsFilter : public OptionsVisitor
110 //! Specifies the type of output that formatSelected() produces.
119 * Creates a new filtering object.
121 * \param[in] context Help context to use to write the help.
122 * \param[in] formatter Output format specific formatter.
126 OptionsFilter(const HelpWriterContext &context,
127 OptionsFormatterInterface *formatter)
128 : context_(context), formatter_(*formatter),
129 bShowHidden_(false), filterType_(eSelectOtherOptions),
130 title_(NULL), bDidOutput_(false)
134 //! Sets whether hidden options will be shown.
135 void setShowHidden(bool bShowHidden)
137 bShowHidden_ = bShowHidden;
140 //! Formats selected options using the formatter.
141 void formatSelected(FilterType type, const Options &options,
144 virtual void visitSubSection(const Options §ion);
145 virtual void visitOption(const OptionInfo &option);
148 void writeTitleIfSet()
152 context_.writeTitle(title_);
156 const HelpWriterContext &context_;
157 OptionsFormatterInterface &formatter_;
159 FilterType filterType_;
163 GMX_DISALLOW_COPY_AND_ASSIGN(OptionsFilter);
166 void OptionsFilter::formatSelected(FilterType type, const Options &options,
172 visitSubSection(options);
175 if (type != eSelectDescriptions)
177 context_.writeOptionListEnd();
179 context_.outputFile().writeLine();
183 void OptionsFilter::visitSubSection(const Options §ion)
185 if (filterType_ == eSelectDescriptions)
187 if (!section.description().empty())
191 context_.outputFile().writeLine();
197 formatter_.formatDescription(context_, section);
202 OptionsIterator iterator(section);
203 iterator.acceptSubSections(this);
204 iterator.acceptOptions(this);
207 void OptionsFilter::visitOption(const OptionInfo &option)
209 if (!bShowHidden_ && option.isHidden())
213 if (option.isType<FileNameOptionInfo>())
215 if (filterType_ == eSelectFileOptions)
220 context_.writeOptionListStart();
222 formatter_.formatFileOption(context_,
223 *option.toType<FileNameOptionInfo>());
228 if (filterType_ == eSelectOtherOptions)
233 context_.writeOptionListStart();
235 formatter_.formatOption(context_, option);
241 /********************************************************************
242 * CommonFormatterData
245 class CommonFormatterData
248 explicit CommonFormatterData(const char *timeUnit)
253 const char *timeUnit;
256 /********************************************************************
260 //! Formats the default option value as a string.
262 defaultOptionValue(const OptionInfo &option)
264 if (option.valueCount() == 0
265 || (option.valueCount() == 1 && option.formatValue(0).empty()))
267 return option.formatDefaultValueIfSet();
272 for (int i = 0; i < option.valueCount(); ++i)
278 result.append(option.formatValue(i));
284 //! Formats the flags for a file option as a string.
286 fileOptionFlagsAsString(const FileNameOptionInfo &option, bool bAbbrev)
289 if (option.isInputOutputFile())
291 type = bAbbrev ? "In/Out" : "Input/Output";
293 else if (option.isInputFile())
297 else if (option.isOutputFile())
301 if (!option.isRequired())
303 type += bAbbrev ? ", Opt." : ", Optional";
305 if (option.isLibraryFile())
307 type += bAbbrev ? ", Lib." : ", Library";
309 // TODO: Add a tag for options that accept multiple files.
313 //! Formats the description for an option as a string.
315 descriptionWithOptionDetails(const CommonFormatterData &common,
316 const OptionInfo &option)
318 std::string description(option.formatDescription());
320 const FloatOptionInfo *floatOption = option.toType<FloatOptionInfo>();
321 const DoubleOptionInfo *doubleOption = option.toType<DoubleOptionInfo>();
322 if ((floatOption != NULL && floatOption->isTime())
323 || (doubleOption != NULL && doubleOption->isTime()))
325 // TODO: It could be nicer to have this in basicoptions.cpp.
326 description = replaceAll(description, "%t", common.timeUnit);
332 /********************************************************************
333 * OptionsExportFormatter
337 * Formatter implementation for help export.
339 class OptionsExportFormatter : public OptionsFormatterInterface
342 //! Creates a helper object for formatting options.
343 OptionsExportFormatter(const CommonFormatterData &common, bool bConsole);
345 virtual void formatDescription(const HelpWriterContext &context,
346 const Options §ion);
347 virtual void formatFileOption(const HelpWriterContext &context,
348 const FileNameOptionInfo &option);
349 virtual void formatOption(const HelpWriterContext &context,
350 const OptionInfo &option);
353 const CommonFormatterData &common_;
354 boost::scoped_ptr<TextTableFormatter> consoleFormatter_;
356 GMX_DISALLOW_COPY_AND_ASSIGN(OptionsExportFormatter);
359 OptionsExportFormatter::OptionsExportFormatter(
360 const CommonFormatterData &common, bool bConsole)
365 consoleFormatter_.reset(new TextTableFormatter());
366 consoleFormatter_->setFirstColumnIndent(1);
367 consoleFormatter_->setFoldLastColumnToNextLine(4);
368 consoleFormatter_->addColumn(NULL, 6, false);
369 consoleFormatter_->addColumn(NULL, 8, false);
370 consoleFormatter_->addColumn(NULL, 10, false);
371 consoleFormatter_->addColumn(NULL, 50, true);
375 void OptionsExportFormatter::formatDescription(
376 const HelpWriterContext &context, const Options §ion)
378 // TODO: Print title for the section?
379 context.writeTextBlock(section.description());
382 void OptionsExportFormatter::formatFileOption(
383 const HelpWriterContext &context, const FileNameOptionInfo &option)
385 const bool bAbbrev = (context.outputFormat() == eHelpOutputFormat_Console);
386 std::string value("<" + option.type() + ">");
387 std::string defaultValue(defaultOptionValue(option));
388 std::string info = "(" + fileOptionFlagsAsString(option, bAbbrev) + ")";
389 if (!defaultValue.empty())
391 info = "(" + defaultValue + ") " + info;
393 std::string description(option.formatDescription());
394 if (context.outputFormat() == eHelpOutputFormat_Console)
396 consoleFormatter_->clear();
397 consoleFormatter_->addColumnLine(0, "-" + option.name());
398 consoleFormatter_->addColumnLine(1, value);
399 consoleFormatter_->addColumnLine(2, info);
400 consoleFormatter_->addColumnHelpTextBlock(3, context, description);
401 context.outputFile().writeString(consoleFormatter_->formatRow());
406 context.writeOptionItem("-" + option.name(), value, description);
410 void OptionsExportFormatter::formatOption(
411 const HelpWriterContext &context, const OptionInfo &option)
413 std::string name(option.name());
414 std::string value("<" + option.type() + ">");
415 std::string defaultValue(defaultOptionValue(option));
416 std::string description(descriptionWithOptionDetails(common_, option));
417 if (option.isType<BooleanOptionInfo>())
419 name = "[no]" + name;
420 // Old command-line parser doesn't accept any values for these.
421 // value = "[" + value + "]";
424 if (context.outputFormat() == eHelpOutputFormat_Console)
426 consoleFormatter_->clear();
427 consoleFormatter_->addColumnLine(0, "-" + name);
428 consoleFormatter_->addColumnLine(1, value);
429 if (!defaultValue.empty())
431 consoleFormatter_->addColumnLine(2, "(" + defaultValue + ")");
433 consoleFormatter_->addColumnHelpTextBlock(3, context, description);
434 context.outputFile().writeString(consoleFormatter_->formatRow());
438 if (!defaultValue.empty())
440 value += " (" + defaultValue + ")";
442 context.writeOptionItem("-" + name, value, description);
450 /********************************************************************
451 * CommandLineHelpWriter::Impl
455 * Private implementation class for CommandLineHelpWriter.
457 * \ingroup module_commandline
459 class CommandLineHelpWriter::Impl
462 //! Sets the Options object to use for generating help.
463 explicit Impl(const Options &options);
465 //! Options object to use for generating help.
466 const Options &options_;
467 //! Time unit to show in descriptions.
468 std::string timeUnit_;
469 //! Whether to write descriptions to output.
470 bool bShowDescriptions_;
473 CommandLineHelpWriter::Impl::Impl(const Options &options)
474 : options_(options), timeUnit_(TimeUnitManager().timeUnitAsString()),
475 bShowDescriptions_(false)
479 /********************************************************************
480 * CommandLineHelpWriter
483 CommandLineHelpWriter::CommandLineHelpWriter(const Options &options)
484 : impl_(new Impl(options))
488 CommandLineHelpWriter::~CommandLineHelpWriter()
492 CommandLineHelpWriter &CommandLineHelpWriter::setShowDescriptions(bool bSet)
494 impl_->bShowDescriptions_ = bSet;
498 CommandLineHelpWriter &CommandLineHelpWriter::setTimeUnitString(const char *timeUnit)
500 impl_->timeUnit_ = timeUnit;
504 void CommandLineHelpWriter::writeHelp(const CommandLineHelpContext &context)
506 const HelpWriterContext &writerContext = context.writerContext();
508 = (writerContext.outputFormat() == eHelpOutputFormat_Console);
509 CommonFormatterData common(impl_->timeUnit_.c_str());
510 OptionsExportFormatter formatter(common, bConsole);
511 OptionsFilter filter(writerContext, &formatter);
512 filter.setShowHidden(context.showHidden());
514 File &file = writerContext.outputFile();
517 // TODO: Write a proper synopsis, with all the options.
518 writerContext.writeTitle("Synopsis");
519 writerContext.writeTextBlock(context.moduleDisplayName());
520 file.writeLine("\n\n");
523 if (impl_->bShowDescriptions_)
525 filter.formatSelected(OptionsFilter::eSelectDescriptions,
526 impl_->options_, "Description");
528 filter.formatSelected(OptionsFilter::eSelectFileOptions,
529 impl_->options_, "File Options");
530 filter.formatSelected(OptionsFilter::eSelectOtherOptions,
531 impl_->options_, "Options");