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37 * Declares gmx::CommandLineHelpModule.
39 * \author Teemu Murtola <teemu.murtola@gmail.com>
40 * \ingroup module_commandline
42 #ifndef GMX_COMMANDLINE_CMDLINEHELPMODULE_H
43 #define GMX_COMMANDLINE_CMDLINEHELPMODULE_H
45 #include "cmdlinemodule.h"
46 #include "cmdlinemodulemanager-impl.h"
48 #include "gromacs/onlinehelp/helptopicinterface.h"
49 #include "gromacs/utility/common.h"
54 class CommandLineHelpContext;
57 class ProgramContextInterface;
59 class CommandLineHelpModuleImpl;
63 * Command-line module for producing help.
65 * This module implements the 'help' subcommand that is automatically added by
66 * CommandLineModuleManager.
68 * \ingroup module_commandline
70 class CommandLineHelpModule : public CommandLineModuleInterface
74 * Creates a command-line help module.
76 * \param[in] programContext Information about the running binary.
77 * \param[in] binaryName Name of the running binary
78 * (without Gromacs binary suffix or .exe on Windows).
79 * \param[in] modules List of modules for to use for module listings.
80 * \param[in] groups List of module groups.
81 * \throws std::bad_alloc if out of memory.
83 CommandLineHelpModule(const ProgramContextInterface &programContext,
84 const std::string &binaryName,
85 const CommandLineModuleMap &modules,
86 const CommandLineModuleGroupList &groups);
87 ~CommandLineHelpModule();
90 * Creates a help topic for a command-line module.
92 * \param[in] module Module the create the help topic for.
93 * \throws std::bad_alloc if out of memory.
95 * The caller should add the topic using addTopic() if that is desired.
96 * This method is provided separately to allow for strong exception
97 * safety in CommandLineModuleManager::addModule().
100 createModuleHelpTopic(const CommandLineModuleInterface &module) const;
102 * Adds a top-level help topic.
104 * \param[in] topic Help topic to add.
105 * \throws std::bad_alloc if out of memory.
107 void addTopic(HelpTopicPointer topic);
108 //! Sets whether hidden options will be shown in help.
109 void setShowHidden(bool bHidden);
110 //! Sets the common options for the wrapper binary.
111 void setCommonOptions(const Options *options);
113 * Sets an override to show the help for the given module.
115 * If called, the help module directly prints the help for the given
116 * module when called, skipping any other processing.
118 void setModuleOverride(const CommandLineModuleInterface &module);
121 * Sets a file to write help output to instead of default `stdout`.
123 * Used for unit testing; see
124 * CommandLineModuleManager::setOutputRedirect() for more details.
126 void setOutputRedirect(File *output);
128 virtual const char *name() const { return "help"; }
129 virtual const char *shortDescription() const
131 return "Print help information";
134 virtual int run(int argc, char *argv[]);
135 virtual void writeHelp(const CommandLineHelpContext &context) const;
138 typedef CommandLineHelpModuleImpl Impl;
140 PrivateImplPointer<Impl> impl_;