src/gromacs/commandline/cmdlinemodulemanager-impl.h

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  35 /*! \internal \file
  36  * \brief
  37  * Declares implementation types for gmx::CommandLineModuleManager.
  38  *
  39  * \author Teemu Murtola <teemu.murtola@gmail.com>
  40  * \ingroup module_commandline
  41  */
  42 #ifndef GMX_COMMANDLINE_CMDLINEMODULEMANAGER_IMPL_H
  43 #define GMX_COMMANDLINE_CMDLINEMODULEMANAGER_IMPL_H
  44
  45 #include <map>
  46 #include <memory>
  47 #include <string>
  48 #include <vector>
  49
  50 #include "gromacs/commandline/cmdlinemodule.h"
  51 #include "gromacs/commandline/cmdlinemodulemanager.h"
  52 #include "gromacs/options/options.h"
  53 #include "gromacs/utility/binaryinformation.h"
  54 #include "gromacs/utility/classhelpers.h"
  55 #include "gromacs/utility/gmxassert.h"
  56
  57 namespace gmx
  58 {
  59
  60 //! \addtogroup module_commandline
  61 //! \{
  62
  63 //! Container type for mapping module names to module objects.
  64 typedef std::map<std::string, CommandLineModulePointer> CommandLineModuleMap;
  65
  66 /*! \internal
  67  * \brief
  68  * Internal data for a CommandLineModuleManager module group.
  69  *
  70  * This class contains the state of a module group.  CommandLineModuleGroup
  71  * provides the public interface to construct/alter the state, and
  72  * CommandLineModuleManager and its associated classes use it for help output.
  73  */
  74 class CommandLineModuleGroupData
  75 {
  76     public:
  77         /*! \brief
  78          * Shorthand for a list of modules contained in the group.
  79          *
  80          * The first element in the contained pair contains the tag
  81          * (gmx-something) of the module, and the second element contains the
  82          * description.  The second element is never NULL.
  83          */
  84         typedef std::vector<std::pair<std::string, const char *> > ModuleList;
  85
  86         /*! \brief
  87          * Constructs an empty module group.
  88          *
  89          * \param[in] modules     List of all modules
  90          *     (used for checking and default descriptions).
  91          * \param[in] binaryName  Name of the binary containing the modules.
  92          * \param[in] title       Title of the group.
  93          *
  94          * Does not throw.
  95          */
  96         CommandLineModuleGroupData(const CommandLineModuleMap &modules,
  97                                    const char                 *binaryName,
  98                                    const char                 *title)
  99             : allModules_(modules), binaryName_(binaryName), title_(title)
 100         {
 101         }
 102
 103         //! Returns the title for the group.
 104         const char *title() const { return title_; }
 105         //! Returns the list of modules in the group.
 106         const ModuleList &modules() const { return modules_; }
 107
 108         /*! \brief
 109          * Adds a module to the group.
 110          *
 111          * \param[in] name        Name of the module.
 112          * \param[in] description Description of the module in this group.
 113          * \throws    std::bad_alloc if out of memory.
 114          *
 115          * If \p description is NULL, the description returned by the module is
 116          * used.
 117          */
 118         void addModule(const char *name, const char *description);
 119
 120     private:
 121         const CommandLineModuleMap &allModules_;
 122         const char                 *binaryName_;
 123         const char                 *title_;
 124         ModuleList                  modules_;
 125
 126         GMX_DISALLOW_COPY_AND_ASSIGN(CommandLineModuleGroupData);
 127 };
 128
 129 //! Smart pointer type for managing a CommandLineModuleGroup.
 130 typedef std::unique_ptr<CommandLineModuleGroupData>
 131     CommandLineModuleGroupDataPointer;
 132 //! Container type for keeping a list of module groups.
 133 typedef std::vector<CommandLineModuleGroupDataPointer>
 134     CommandLineModuleGroupList;
 135
 136 /*! \internal
 137  * \brief
 138  * Encapsulates some handling of common options to the wrapper binary.
 139  */
 140 class CommandLineCommonOptionsHolder
 141 {
 142     public:
 143         CommandLineCommonOptionsHolder();
 144         ~CommandLineCommonOptionsHolder();
 145
 146         //! Initializes the common options.
 147         void initOptions();
 148         /*! \brief
 149          * Finishes option parsing.
 150          *
 151          * \returns `false` if the wrapper binary should quit without executing
 152          *     any module.
 153          */
 154         bool finishOptions();
 155
 156         //! Adjust defaults based on module settings.
 157         void adjustFromSettings(const CommandLineModuleSettings &settings);
 158
 159         //! Returns the internal Options object.
 160         Options *options() { return &options_; }
 161         //! Returns the settings for printing startup information.
 162         const BinaryInformationSettings &binaryInfoSettings() const
 163         {
 164             return binaryInfoSettings_;
 165         }
 166
 167         /*! \brief
 168          * Returns `true` if common options are set such that the wrapper
 169          * binary should quit, without running the actual module.
 170          */
 171         bool shouldIgnoreActualModule() const
 172         {
 173             return bHelp_ || bVersion_;
 174         }
 175         //! Returns whether common options specify showing help.
 176         bool shouldShowHelp() const { return bHelp_; }
 177         //! Returns whether common options specify showing hidden options in help.
 178         bool shouldShowHidden() const { return bHidden_; }
 179         //! Returns whether common options specify quiet execution.
 180         bool shouldBeQuiet() const
 181         {
 182             return bQuiet_ && !bVersion_;
 183         }
 184         //! Returns whether backups should be made.
 185         bool shouldBackup() const { return bBackup_; }
 186
 187         //! Returns the nice level.
 188         int niceLevel() const { return niceLevel_; }
 189         //! Returns whether floating-point exception should be enabled
 190         bool enableFPExceptions() const { return bFpexcept_; }
 191         //! Returns the debug level.
 192         int debugLevel() const { return debugLevel_; }
 193
 194         //! Returns the file to which startup information should be printed.
 195         FILE *startupInfoFile() const { return (bVersion_ ? stdout : stderr); }
 196
 197     private:
 198         Options                      options_;
 199         //! Settings for what to write in the startup header.
 200         BinaryInformationSettings    binaryInfoSettings_;
 201         bool                         bHelp_;
 202         bool                         bHidden_;
 203         bool                         bQuiet_;
 204         bool                         bVersion_;
 205         bool                         bCopyright_;
 206         int                          niceLevel_;
 207         bool                         bNiceSet_;
 208         bool                         bBackup_;
 209         bool                         bFpexcept_;
 210         int                          debugLevel_;
 211
 212         GMX_DISALLOW_COPY_AND_ASSIGN(CommandLineCommonOptionsHolder);
 213 };
 214
 215 //! \}
 216
 217 } // namespace gmx
 218
 219 #endif