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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 FileNameOptionStorage;
59 * Specifies an option that provides file names.
61 * Public methods in this class do not throw.
64 * \ingroup module_options
66 class FileNameOption : public OptionTemplate<std::string, FileNameOption>
69 //! OptionInfo subclass corresponding to this option type.
70 typedef FileNameOptionInfo InfoType;
72 //! Initializes an option with the given name.
73 explicit FileNameOption(const char *name)
74 : MyBase(name), filetype_(eftUnknown), legacyType_(-1),
75 defaultBasename_(NULL),
76 bRead_(false), bWrite_(false), bLibrary_(false)
81 * Sets the type of the file this option accepts.
83 * Either this attribute or legacyType() must be provided.
85 MyClass &filetype(OptionFileType type)
86 { filetype_ = type; return me(); }
88 * Sets the type of the file from an enum in filenm.h.
90 * New code should prefer filetype(), extending the enumeration if
93 MyClass &legacyType(int type)
94 { legacyType_ = type; return me(); }
95 //! Tells that the file provided by this option is used for input only.
97 { bRead_ = true; bWrite_ = false; return me(); }
98 //! Tells that the file provided by this option is used for output only.
100 { bRead_ = false; bWrite_ = true; return me(); }
102 * Tells that the file provided by this option is used for input and
105 MyClass &inputOutputFile()
106 { bRead_ = bWrite_ = true; return me(); }
108 * Sets the read/write usage for this file from boolean flags.
110 MyClass &readWriteFlags(bool bRead, bool bWrite)
111 { bRead_ = bRead; bWrite_ = bWrite; return me(); }
113 * Tells that the file will be looked up in library directories in
114 * addition to working directory.
117 * Currently, this flag only affects the help output. Callers must
118 * take care themselves to actually search the file in the library
119 * directories. It would be nicer to do this searching within the
120 * file name option implementation.
122 MyClass &libraryFile(bool bLibrary = true)
123 { bLibrary_ = bLibrary; return me(); }
125 * Sets a default basename for the file option.
127 * Use this method instead of defaultValue() or defaultValueIfSet() to
128 * set a default value for a file name option. No extension needs to
129 * be provided; it is automatically added based on filetype().
130 * The behavior is also adjusted based on required(): if the option is
131 * required, the value given to defaultBasename() is treated as for
132 * both defaultValue() and defaultValueIfSet(), otherwise it is treated
133 * as for defaultValueIfSet().
135 MyClass &defaultBasename(const char *basename)
136 { defaultBasename_ = basename; return me(); }
139 // Use defaultBasename() instead.
140 using MyBase::defaultValue;
141 using MyBase::defaultValueIfSet;
143 //! Creates a FileNameOptionStorage object.
144 virtual AbstractOptionStoragePointer createStorage() const;
146 OptionFileType filetype_;
148 const char *defaultBasename_;
154 * Needed to initialize FileNameOptionStorage from this class without
155 * otherwise unnecessary accessors.
157 friend class FileNameOptionStorage;
161 * Wrapper class for accessing file name option information.
164 * \ingroup module_options
166 class FileNameOptionInfo : public OptionInfo
169 //! Shorthand for a list of extensions.
170 typedef ConstArrayRef<const char *> ExtensionList;
172 //! Creates an option info object for the given option.
173 explicit FileNameOptionInfo(FileNameOptionStorage *option);
175 //! Whether the option specifies an input file.
176 bool isInputFile() const;
177 //! Whether the option specifies an output file.
178 bool isOutputFile() const;
179 //! Whether the option specifies a file used for both input and output.
180 bool isInputOutputFile() const;
182 * Whether the option specifies a library file.
184 * \see FileNameOption::libraryFile()
186 bool isLibraryFile() const;
188 //! Whether the option specifies directories.
189 bool isDirectoryOption() const;
190 //! Returns the list of extensions this option accepts.
191 ExtensionList extensions() const;
194 const FileNameOptionStorage &option() const;