4 * This file is part of LyX, the document processor.
5 * Licence details can be found in the file COPYING.
7 * \author Angus Leeming
9 * Full author contact details are available in file CREDITS.
27 * Class for storing file names.
28 * The file name may be empty. If it is not empty it is an absolute path.
29 * The file may or may not exist.
33 /// Constructor for empty filenames
35 /** Constructor for nonempty filenames.
36 * explicit because we don't want implicit conversion of relative
37 * paths in function arguments (e.g. of unlink).
38 * \param abs_filename the file in question. Must have an absolute path.
39 * Encoding is always UTF-8.
41 explicit FileName(std::string const & abs_filename);
44 FileName(FileName const &);
47 FileName & operator=(FileName const &);
49 virtual ~FileName() {}
50 /** Set a new filename.
51 * \param filename the file in question. Must have an absolute path.
52 * Encoding is always UTF-8.
54 virtual void set(std::string const & filename);
56 /// Is this filename empty?
58 /// get the absolute file name in UTF-8 encoding
59 std::string absFilename() const;
61 * Get the file name in the encoding used by the file system.
62 * Only use this for accessing the file, e.g. with an fstream.
64 std::string toFilesystemEncoding() const;
66 /// returns true if the file exists
68 /// \return true if this object points to a symbolic link.
69 bool isSymLink() const;
70 /// \return true if the file is empty.
71 bool isFileEmpty() const;
72 /// returns time of last write access
73 std::time_t lastModified() const;
74 /// return true when file is readable but not writabel
75 bool isReadOnly() const;
76 /// return true when it names a directory
77 bool isDirectory() const;
78 /// return true when file/directory is readable
79 bool isReadableDirectory() const;
80 /// return true when it is a file and readable
81 bool isReadableFile() const;
82 /// return true when file/directory is writable
83 bool isWritable() const;
84 /// return true when file/directory is writable (write test file)
85 bool isDirWritable() const;
87 /// return true when file/directory is writable (write test file)
88 bool copyTo(FileName const & target) const;
90 /// remove directory and all contents, returns true on success
91 bool destroyDirectory() const;
92 /// Creates directory. Returns true on success
93 bool createDirectory(int permissions) const;
95 /// \return list files in a directory having optional extension ext..
96 std::vector<FileName> dirList(
97 std::string const & ext = std::string());
99 /// Get the contents of a file as a huge std::string
100 std::string fileContents() const;
102 * Get a FileName from \p name in the encoding used by the file system.
103 * Only use this for filenames you got directly from the file system,
104 * e.g. from reading a directory.
105 * \p name must have an absolute path.
108 /** Guess the file format name (as in Format::name()) from contents.
109 Normally you don't want to use this directly, but rather
110 Formats::getFormatFromFile().
112 std::string guessFormatFromContents() const;
114 /// check for zipped file
115 bool isZippedFile() const;
117 static FileName fromFilesystemEncoding(std::string const & name);
118 /// (securely) create a temporary file in the given dir with the given mask
119 /// \p mask must be in filesystem encoding
120 static FileName tempName(FileName const & dir = FileName(),
121 std::string const & mask = std::string());
123 /// filename without path
124 std::string onlyFileName() const;
125 /// path without file name
126 FileName onlyPath() const;
127 /// used for display in the Gui
128 docstring displayName(int threshold = 1000) const;
131 friend class DocFileName;
138 bool operator==(FileName const &, FileName const &);
139 bool operator!=(FileName const &, FileName const &);
140 bool operator<(FileName const &, FileName const &);
141 bool operator>(FileName const &, FileName const &);
142 std::ostream & operator<<(std::ostream &, FileName const &);
146 * Class for storing file names that appear in documents (e. g. child
147 * documents, included figures etc).
148 * The file name must not denote a file in our temporary directory, but a
149 * file that the user chose.
151 class DocFileName : public FileName {
154 /** \param abs_filename the file in question. Must have an absolute path.
155 * \param save_abs_path how is the file to be output to file?
157 DocFileName(std::string const & abs_filename, bool save_abs_path = true);
158 DocFileName(FileName const & abs_filename, bool save_abs_path = true);
160 /** \param filename the file in question. May have either a relative
161 * or an absolute path.
162 * \param buffer_path if \c filename has a relative path, generate
163 * the absolute path using this.
165 void set(std::string const & filename, std::string const & buffer_path);
169 bool saveAbsPath() const { return save_abs_path_; }
170 /// \param buffer_path if empty, uses `pwd`
171 std::string const relFilename(std::string const & buffer_path = std::string()) const;
172 /// \param buf_path if empty, uses `pwd`
173 std::string const outputFilename(std::string const & buf_path = std::string()) const;
175 /** @returns a mangled representation of the absolute file name
176 * suitable for use in the temp dir when, for example, converting
177 * an image file to another format.
179 * @param dir the directory that will contain this file with
180 * its mangled name. This information is used by the mangling
181 * algorithm when determining the maximum allowable length of
184 * An example of a mangled name:
185 * C:/foo bar/baz.eps -> 0C__foo_bar_baz.eps
187 * It is guaranteed that
188 * - two different filenames have different mangled names
189 * - two FileName instances with the same filename have identical
192 * Only the mangled file name is returned. It is not prepended
196 mangledFilename(std::string const & dir = std::string()) const;
198 /// \return true if the file is compressed.
199 bool isZipped() const;
200 /// \return the absolute file name without its .gz, .z, .Z extension
201 std::string const unzippedFilename() const;
205 /// Cache for isZipped() because zippedFile() is expensive
206 mutable bool zipped_;
207 /// Is zipped_ valid?
208 mutable bool zipped_valid_;
212 bool operator==(DocFileName const &, DocFileName const &);
213 bool operator!=(DocFileName const &, DocFileName const &);
216 } // namespace support