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37 * Declares gmx::FileNameOption and gmx::FileNameOptionInfo.
39 * \author Teemu Murtola <teemu.murtola@gmail.com>
41 * \ingroup module_options
43 #ifndef GMX_OPTIONS_FILENAMEOPTION_H
44 #define GMX_OPTIONS_FILENAMEOPTION_H
48 #include "abstractoption.h"
49 #include "optionfiletype.h"
54 template <typename T> class ConstArrayRef;
55 class FileNameOptionInfo;
56 class FileNameOptionManager;
57 class FileNameOptionStorage;
60 * Specifies an option that provides file names.
62 * Public methods in this class do not throw.
65 * \ingroup module_options
67 class FileNameOption : public OptionTemplate<std::string, FileNameOption>
70 //! OptionInfo subclass corresponding to this option type.
71 typedef FileNameOptionInfo InfoType;
73 //! Initializes an option with the given name.
74 explicit FileNameOption(const char *name)
75 : MyBase(name), filetype_(eftUnknown), legacyType_(-1),
76 defaultBasename_(NULL),
77 bRead_(false), bWrite_(false), bLibrary_(false)
82 * Sets the type of the file this option accepts.
84 * Either this attribute or legacyType() must be provided.
86 MyClass &filetype(OptionFileType type)
87 { filetype_ = type; return me(); }
89 * Sets the type of the file from an enum in filenm.h.
91 * New code should prefer filetype(), extending the enumeration if
94 MyClass &legacyType(int type)
95 { legacyType_ = type; return me(); }
96 //! Tells that the file provided by this option is used for input only.
98 { bRead_ = true; bWrite_ = false; return me(); }
99 //! Tells that the file provided by this option is used for output only.
100 MyClass &outputFile()
101 { bRead_ = false; bWrite_ = true; return me(); }
103 * Tells that the file provided by this option is used for input and
106 MyClass &inputOutputFile()
107 { bRead_ = bWrite_ = true; return me(); }
109 * Sets the read/write usage for this file from boolean flags.
111 MyClass &readWriteFlags(bool bRead, bool bWrite)
112 { bRead_ = bRead; bWrite_ = bWrite; return me(); }
114 * Tells that the file will be looked up in library directories in
115 * addition to working directory.
118 * Currently, this flag only affects the help output. Callers must
119 * take care themselves to actually search the file in the library
120 * directories. It would be nicer to do this searching within the
121 * file name option implementation.
123 MyClass &libraryFile(bool bLibrary = true)
124 { bLibrary_ = bLibrary; return me(); }
126 * Sets a default basename for the file option.
128 * Use this method instead of defaultValue() or defaultValueIfSet() to
129 * set a default value for a file name option. No extension needs to
130 * be provided; it is automatically added based on filetype().
131 * The behavior is also adjusted based on required(): if the option is
132 * required, the value given to defaultBasename() is treated as for
133 * both defaultValue() and defaultValueIfSet(), otherwise it is treated
134 * as for defaultValueIfSet().
136 * For input files that accept multiple extensions, the extension is
137 * completed to the default extension on creation of the option or at
138 * time of parsing an option without a value.
139 * The extension may change during Options::finish(), as this is the
140 * time when the default names are checked against the file system to
141 * provide an extension that matches an existing file if that is
144 * If FileNameOptionManager is used, and
145 * FileNameOptionManager::addDefaultFileNameOption() is used, and the
146 * user provides a global default file name using that option, then the
147 * global default takes precedence over defaultBasename().
149 MyClass &defaultBasename(const char *basename)
150 { defaultBasename_ = basename; return me(); }
153 // Use defaultBasename() instead.
154 using MyBase::defaultValue;
155 using MyBase::defaultValueIfSet;
157 //! Creates a FileNameOptionStorage object.
158 virtual AbstractOptionStoragePointer createStorage() const;
160 OptionFileType filetype_;
162 const char *defaultBasename_;
168 * Needed to initialize FileNameOptionStorage from this class without
169 * otherwise unnecessary accessors.
171 friend class FileNameOptionStorage;
175 * Wrapper class for accessing file name option information.
178 * \ingroup module_options
180 class FileNameOptionInfo : public OptionInfo
183 //! Shorthand for a list of extensions.
184 typedef ConstArrayRef<const char *> ExtensionList;
186 //! Creates an option info object for the given option.
187 explicit FileNameOptionInfo(FileNameOptionStorage *option);
190 * Set manager for handling interaction with other options.
192 * \param manager File name option manager to set.
194 * This must be called before the values are added.
196 * Typically it is called through setManagerForFileNameOptions(),
197 * which recursively sets the manager for all file name options in
202 void setManager(FileNameOptionManager *manager);
204 //! Whether the option specifies an input file.
205 bool isInputFile() const;
206 //! Whether the option specifies an output file.
207 bool isOutputFile() const;
208 //! Whether the option specifies a file used for both input and output.
209 bool isInputOutputFile() const;
211 * Whether the option specifies a library file.
213 * \see FileNameOption::libraryFile()
215 bool isLibraryFile() const;
217 //! Whether the option specifies directories.
218 bool isDirectoryOption() const;
219 //! Returns the list of extensions this option accepts.
220 ExtensionList extensions() const;
223 FileNameOptionStorage &option();
224 const FileNameOptionStorage &option() const;