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37 * Declares gmx::CommandLineHelpWriter.
39 * \author Teemu Murtola <teemu.murtola@gmail.com>
41 * \ingroup module_commandline
43 #ifndef GMX_COMMANDLINE_CMDLINEHELPWRITER_H
44 #define GMX_COMMANDLINE_CMDLINEHELPWRITER_H
48 #include "gromacs/utility/classhelpers.h"
53 class CommandLineHelpContext;
60 * Writes help information for Options.
63 * \ingroup module_commandline
65 class CommandLineHelpWriter
69 * Creates an object that writer ascii-formatted help for Options.
71 * \param[in] options Options for which help should be printed.
73 explicit CommandLineHelpWriter(const Options& options);
74 ~CommandLineHelpWriter();
77 * Sets the help text to print as description.
79 * \param[in] help Help text to show.
80 * \throws std::bad_alloc if out of memory.
82 * If `help` is empty, or this method is not called, only a list of
84 * Formatting for the help text is described on \ref page_onlinehelp.
86 CommandLineHelpWriter& setHelpText(const std::string& help);
87 //! \copydoc setHelpText(const std::string &)
88 CommandLineHelpWriter& setHelpText(const ArrayRef<const char* const>& help);
90 * Sets the list of known bugs/limitations.
92 * \param[in] bugs Array of bugs/limitations.
94 * Each entry in the input array identifies a separate issue.
95 * The array passed should remain valid for the lifetime of the writer
98 CommandLineHelpWriter& setKnownIssues(const ArrayRef<const char* const>& bugs);
101 * Sets text for known bugs.
103 * \param[in] bug Text for bugs to show.
104 * \throws std::bad_alloc if out of memory.
106 * Formatting for the text is described on \ref page_onlinehelp.
108 CommandLineHelpWriter& setKnownIssues(ArrayRef<const std::string> bug);
113 * \param[in] context Context object for writing the help.
114 * \throws std::bad_alloc if out of memory.
115 * \throws FileIOError on any I/O error.
117 void writeHelp(const CommandLineHelpContext& context);
122 PrivateImplPointer<Impl> impl_;