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38 * Declares gmx::CommandLineHelpWriter.
40 * \author Teemu Murtola <teemu.murtola@gmail.com>
42 * \ingroup module_commandline
44 #ifndef GMX_COMMANDLINE_CMDLINEHELPWRITER_H
45 #define GMX_COMMANDLINE_CMDLINEHELPWRITER_H
49 #include "gromacs/utility/classhelpers.h"
54 class CommandLineHelpContext;
61 * Writes help information for Options.
64 * \ingroup module_commandline
66 class CommandLineHelpWriter
70 * Creates an object that writer ascii-formatted help for Options.
72 * \param[in] options Options for which help should be printed.
74 explicit CommandLineHelpWriter(const Options& options);
75 ~CommandLineHelpWriter();
78 * Sets the help text to print as description.
80 * \param[in] help Help text to show.
81 * \throws std::bad_alloc if out of memory.
83 * If `help` is empty, or this method is not called, only a list of
85 * Formatting for the help text is described on \ref page_onlinehelp.
87 CommandLineHelpWriter& setHelpText(const std::string& help);
88 //! \copydoc setHelpText(const std::string &)
89 CommandLineHelpWriter& setHelpText(const ArrayRef<const char* const>& help);
91 * Sets the list of known bugs/limitations.
93 * \param[in] bugs Array of bugs/limitations.
95 * Each entry in the input array identifies a separate issue.
96 * The array passed should remain valid for the lifetime of the writer
99 CommandLineHelpWriter& setKnownIssues(const ArrayRef<const char* const>& bugs);
102 * Sets text for known bugs.
104 * \param[in] bug Text for bugs to show.
105 * \throws std::bad_alloc if out of memory.
107 * Formatting for the text is described on \ref page_onlinehelp.
109 CommandLineHelpWriter& setKnownIssues(ArrayRef<const std::string> bug);
114 * \param[in] context Context object for writing the help.
115 * \throws std::bad_alloc if out of memory.
116 * \throws FileIOError on any I/O error.
118 void writeHelp(const CommandLineHelpContext& context);
123 PrivateImplPointer<Impl> impl_;