X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Fsupport%2FFileName.h;h=cfa0c653e605854bb2604241eb1cb5b455f1280c;hb=28be7d552f62cc02fa86d7f79201d089bfb2d7b5;hp=ebcc111b58fc4b7e08c4b08076289c8d4a781d14;hpb=a02653e4ddb08d97850088eec87f4943427c4577;p=lyx.git diff --git a/src/support/FileName.h b/src/support/FileName.h index ebcc111b58..cfa0c653e6 100644 --- a/src/support/FileName.h +++ b/src/support/FileName.h @@ -12,13 +12,18 @@ #ifndef FILENAME_H #define FILENAME_H -#include +#include "support/os.h" +#include "support/strfwd.h" + #include +#include namespace lyx { namespace support { +/// Defined in "FileNameList.h". +class FileNameList; /** * Class for storing file names. @@ -28,7 +33,7 @@ namespace support { class FileName { public: /// Constructor for empty filenames - FileName() {} + FileName(); /** Constructor for nonempty filenames. * explicit because we don't want implicit conversion of relative * paths in function arguments (e.g. of unlink). @@ -36,63 +41,198 @@ public: * Encoding is always UTF-8. */ explicit FileName(std::string const & abs_filename); - virtual ~FileName() {} + + /// copy constructor. + FileName(FileName const &); + + /// constructor with base name and suffix. + FileName(FileName const & fn, std::string const & suffix); + + /// + FileName & operator=(FileName const &); + + virtual ~FileName(); /** Set a new filename. * \param filename the file in question. Must have an absolute path. * Encoding is always UTF-8. */ - virtual void set(std::string const & filename); + void set(std::string const & filename); + void set(FileName const & fn, std::string const & suffix); virtual void erase(); /// Is this filename empty? - bool empty() const { return name_.empty(); } + bool empty() const; + /// Is the filename absolute? + static bool isAbsolute(std::string const & name); + /// get the absolute file name in UTF-8 encoding - std::string const absFilename() const { return name_; } + std::string absFileName() const; + + /** returns an absolute pathname (whose resolution does not involve + * '.', '..', or symbolic links) in UTF-8 encoding + */ + std::string realPath() const; + /** * Get the file name in the encoding used by the file system. - * Only use this for accessing the file, e.g. with an fstream. + * Only use this for passing file names to external commands. + * Warning: On Windows this is not unicode safe and should not + * be used for accessing files with an fstream, for example. */ std::string toFilesystemEncoding() const; + /** + * Get the file name in a unicode safe encoding used by the file system. + * Only use this for accessing the file with standard I/O functions + * non explicitly unicode aware, e.g. with an fstream. This can also + * be used for passing file names to external commands, but only if + * you are sure that the stem of the name will not be used for + * producing derivative files. For example, don't use this for passing + * file names to LaTeX, as the stem of the .dvi file will not correspond + * to the stem of the .tex file anymore. + * Use os::CREATE if the file is to be accessed for writing. + */ + std::string toSafeFilesystemEncoding(os::file_access how = os::EXISTING) const; + /// returns true if the file exists bool exists() const; + /// refreshes the file info + void refresh() const; + /// \return true if this object points to a symbolic link. + bool isSymLink() const; + /// \return true if the file is empty. + bool isFileEmpty() const; /// returns time of last write access std::time_t lastModified() const; - /// return true when file is readable but not writabel + /// generates a checksum of a file + virtual unsigned long checksum() const; + /// return true when file is readable but not writable bool isReadOnly() const; /// return true when it names a directory bool isDirectory() const; - /// return true when file/directory is readable - bool isReadable() const; + /// return true when directory is readable + bool isReadableDirectory() const; /// return true when it is a file and readable - bool isFileReadable() const; + virtual bool isReadableFile() const; /// return true when file/directory is writable bool isWritable() const; /// return true when file/directory is writable (write test file) bool isDirWritable() const; + /// \return list other files in the directory having optional extension 'ext'. + FileNameList dirList(std::string const & ext) const; + + /// copy a file + /// \return true when file/directory is writable (write test file) + /// \warning This methods has different semantics when system level + /// copy command, it will overwrite the \c target file if it exists, + /// If \p keepsymlink is true, the copy will be written to the symlink + /// target. Otherwise, the symlink will be destroyed. + bool copyTo(FileName const & target, bool keepsymlink = false) const; + + /// remove pointed file. + /// \return true on success. + bool removeFile() const; + + /// rename pointed file. + /// \return false if the operation fails or if the \param target file + /// already exists. + /// \return true on success. + bool renameTo(FileName const & target) const; + + /// move pointed file to \param target. + /// If \p target exists it will be overwritten (if it is a symlink, + /// the symlink will be destroyed). + /// \return true on success. + bool moveTo(FileName const & target) const; + bool link(FileName const & name) const; + + /// change mode of pointed file. + /// This methods does nothing and return true on platforms that does not + /// support this. + /// \return true on success. + bool changePermission(unsigned long int mode) const; + /// remove pointed directory and all contents. + /// \return true on success. + bool destroyDirectory() const; + /// Creates pointed directory. + /// \return true on success. + bool createDirectory(int permissions) const; + /// Creates pointed path. + /// \return true on success. + bool createPath() const; + + /// Get the contents of a file as a huge docstring. + /// \param encoding defines the encoding of the file contents. + /// Only four encodings are supported: + /// "UTF-8", "ascii", "latin1" and "local8bit" which uses the + /// current system locale. + docstring fileContents(std::string const & encoding) const; + + /// Change extension. /** - * Get a FileName from \p name in the encoding used by the file system. - * Only use this for filenames you got directly from the file system, - * e.g. from reading a directory. - * \p name must have an absolute path. - */ + * If oldname does not have an extension, it is appended. + * If the extension is empty, any extension is removed from the name. + */ + void changeExtension(std::string const & extension); + static FileName fromFilesystemEncoding(std::string const & name); - /// (securely) create a temporary file in the given dir with the given mask - /// \p mask must be in filesystem encoding - static FileName tempName(FileName const & dir = FileName(), - std::string const & mask = std::string()); -protected: - /// The absolute file name. - /// The encoding is currently unspecified, anything else than ASCII - /// may or may not work. - std::string name_; + + /// get the current working directory + static FileName getcwd(); + + static FileName tempPath(); + + /// filename without path + std::string onlyFileName() const; + /// filename without path and without extension + std::string onlyFileNameWithoutExt() const; + /// only extension after the last dot. + std::string extension() const; + /** checks if the file has the given extension + on Windows and Mac it compares case insensitive */ + bool hasExtension(const std::string & ext); + /// path without file name + FileName onlyPath() const; + /// path of parent directory + /// returns empty path for root directory + FileName parentPath() const; + /// used for display in the Gui + docstring displayName(int threshold = 1000) const; + + /// change to a directory, return success + bool chdir() const; + + /// \param buffer_path if empty, uses `pwd` + docstring const relPath(std::string const & path) const; + + docstring const absoluteFilePath() const; + +private: + friend bool equivalent(FileName const &, FileName const &); + /// Set for tracking of already visited file names. + /// Uses operator==() (which may be case insensitive), and not + /// equvalent(), so that symlinks are not resolved. + typedef std::set FileNameSet; + /// Helper for public copyTo() to find circular symlink chains + bool copyTo(FileName const &, bool, FileNameSet &) const; + /// + struct Private; + Private * const d; }; +/// \return true if lhs and rhs represent the same file. E.g., +/// they might be hardlinks of one another. +bool equivalent(FileName const & lhs, FileName const & rhs); +/// \return true if the absolute path names are the same. bool operator==(FileName const &, FileName const &); +/// bool operator!=(FileName const &, FileName const &); +/// Lexically compares the absolute path names. bool operator<(FileName const &, FileName const &); +/// Lexically compares the absolute path names. bool operator>(FileName const &, FileName const &); +/// Writes the absolute path name to the stream. std::ostream & operator<<(std::ostream &, FileName const &); @@ -106,7 +246,7 @@ class DocFileName : public FileName { public: DocFileName(); /** \param abs_filename the file in question. Must have an absolute path. - * \param save_abs_path how is the file to be output to file? + * \param save_abs_path how is the filename to be output? */ DocFileName(std::string const & abs_filename, bool save_abs_path = true); DocFileName(FileName const & abs_filename, bool save_abs_path = true); @@ -117,14 +257,14 @@ public: * the absolute path using this. */ void set(std::string const & filename, std::string const & buffer_path); - + /// void erase(); - + /// bool saveAbsPath() const { return save_abs_path_; } /// \param buffer_path if empty, uses `pwd` - std::string const relFilename(std::string const & buffer_path = std::string()) const; + std::string relFileName(std::string const & buffer_path = empty_string()) const; /// \param buf_path if empty, uses `pwd` - std::string const outputFilename(std::string const & buf_path = std::string()) const; + std::string outputFileName(std::string const & buf_path = empty_string()) const; /** @returns a mangled representation of the absolute file name * suitable for use in the temp dir when, for example, converting @@ -146,27 +286,25 @@ public: * Only the mangled file name is returned. It is not prepended * with @c dir. */ - std::string const - mangledFilename(std::string const & dir = std::string()) const; + std::string + mangledFileName(std::string const & dir = empty_string()) const; - /// \return true if the file is compressed. - bool isZipped() const; /// \return the absolute file name without its .gz, .z, .Z extension - std::string const unzippedFilename() const; + std::string unzippedFileName() const; private: + /// Records whether we should save (or export) the filename as a relative + /// or absolute path. bool save_abs_path_; - /// Cache for isZipped() because zippedFile() is expensive - mutable bool zipped_; - /// Is zipped_ valid? - mutable bool zipped_valid_; }; +/// \return true if these have the same absolute path name AND +/// if save_abs_path_ has the same value in both cases. bool operator==(DocFileName const &, DocFileName const &); +/// bool operator!=(DocFileName const &, DocFileName const &); - } // namespace support } // namespace lyx