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35 /*! \libinternal \file
37 * Declares gmx::HelpWriterContext.
39 * \author Teemu Murtola <teemu.murtola@gmail.com>
41 * \ingroup module_onlinehelp
43 #ifndef GMX_ONLINEHELP_HELPWRITERCONTEXT_H
44 #define GMX_ONLINEHELP_HELPWRITERCONTEXT_H
49 #include "../utility/common.h"
55 class TextLineWrapperSettings;
58 //! \libinternal Output format for help writing.
61 eHelpOutputFormat_Console, //!< Plain text directly on the console.
62 eHelpOutputFormat_Man, //!< Man page.
63 eHelpOutputFormat_Html, //!< Html output for online manual.
64 eHelpOutputFormat_NR //!< Used for the number of output formats.
68 /*! \libinternal \brief
69 * Context information for writing out help.
71 * The purpose of this class is to pass information about the output format to
72 * methods that write help, and to abstract away most of the details of
73 * different output formats.
74 * Additionally, it can keep other context information, although it currently
75 * does not. Such additional context information would be useful for
76 * formatting links/references to other help topics.
78 * TODO: This class will need additional work as part of Redmine issue #969.
81 * \ingroup module_onlinehelp
83 class HelpWriterContext
87 * Initializes a context with the given output file and format.
89 * \throws std::bad_alloc if out of memory.
91 HelpWriterContext(File *file, HelpOutputFormat format);
95 * Returns the active output format.
99 HelpOutputFormat outputFormat() const;
101 * Returns the raw output file for writing the help.
103 * Using this file directly should be avoided, as it requires one to
104 * have different code for each output format.
105 * Using other methods in this class should be preferred.
109 File &outputFile() const;
112 * Substitutes markup used in help text and wraps lines.
114 * \param[in] settings Line wrapper settings.
115 * \param[in] text Text to substitute.
116 * \returns \p text with markup substituted and wrapped.
117 * \throws std::bad_alloc if out of memory.
119 * \see TextLineWrapper::wrapToString()
122 substituteMarkupAndWrapToString(const TextLineWrapperSettings &settings,
123 const std::string &text) const;
125 * Substitutes markup used in help text and wraps lines.
127 * \param[in] settings Line wrapper settings.
128 * \param[in] text Text to substitute.
129 * \returns \p text with markup substituted and wrapped as a list of
131 * \throws std::bad_alloc if out of memory.
133 * \see TextLineWrapper::wrapToVector()
135 std::vector<std::string>
136 substituteMarkupAndWrapToVector(const TextLineWrapperSettings &settings,
137 const std::string &text) const;
139 * Writes a title for the current help topic.
141 * \param[in] title Title to write.
142 * \throws std::bad_alloc if out of memory.
143 * \throws FileIOError on any I/O error.
145 void writeTitle(const std::string &title) const;
147 * Writes a formatted text block into the output.
149 * \param[in] text Text to format.
150 * \throws std::bad_alloc if out of memory.
151 * \throws FileIOError on any I/O error.
153 * Convenience function that calls substituteMarkupAndWrapToString()
154 * and writes the result directly to the output file.
156 void writeTextBlock(const std::string &text) const;
158 * Writes a formatted text block into the output.
160 * \param[in] settings Line wrapper settings.
161 * \param[in] text Text to format.
162 * \throws std::bad_alloc if out of memory.
163 * \throws FileIOError on any I/O error.
165 * Convenience function that calls substituteMarkupAndWrapToString()
166 * and writes the result directly to the output file.
168 void writeTextBlock(const TextLineWrapperSettings &settings,
169 const std::string &text) const;
174 PrivateImplPointer<Impl> impl_;