mirror of
https://git.lyx.org/repos/lyx.git
synced 2024-11-15 23:49:37 +00:00
314 lines
10 KiB
C++
314 lines
10 KiB
C++
// -*- C++ -*-
|
|
/**
|
|
* \file FileName.h
|
|
* This file is part of LyX, the document processor.
|
|
* Licence details can be found in the file COPYING.
|
|
*
|
|
* \author Angus Leeming
|
|
*
|
|
* Full author contact details are available in file CREDITS.
|
|
*/
|
|
|
|
#ifndef FILENAME_H
|
|
#define FILENAME_H
|
|
|
|
#include "support/os.h"
|
|
#include "support/strfwd.h"
|
|
|
|
#include <ctime>
|
|
#include <set>
|
|
|
|
|
|
namespace lyx {
|
|
namespace support {
|
|
|
|
/// Defined in "FileNameList.h".
|
|
class FileNameList;
|
|
|
|
/**
|
|
* Class for storing file names.
|
|
* The file name may be empty. If it is not empty it is an absolute path.
|
|
* The file may or may not exist.
|
|
*/
|
|
class FileName {
|
|
public:
|
|
/// Constructor for empty filenames
|
|
FileName();
|
|
/** Constructor for nonempty filenames.
|
|
* explicit because we don't want implicit conversion of relative
|
|
* paths in function arguments (e.g. of unlink).
|
|
* \param abs_filename the file in question. Must have an absolute path.
|
|
* Encoding is always UTF-8.
|
|
*/
|
|
explicit FileName(std::string const & abs_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.
|
|
*/
|
|
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;
|
|
/// Is the filename absolute?
|
|
static bool isAbsolute(std::string const & name);
|
|
|
|
/// get the absolute file name in UTF-8 encoding
|
|
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 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;
|
|
/// 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 directory is readable
|
|
bool isReadableDirectory() const;
|
|
/// return true when it is a file and readable
|
|
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;
|
|
// sets permission based on the file given as an argument
|
|
bool clonePermissions(FileName const & source);
|
|
|
|
/// 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.
|
|
/**
|
|
* 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);
|
|
|
|
/// 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<FileName> 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 &);
|
|
|
|
|
|
/**
|
|
* Class for storing file names that appear in documents (e. g. child
|
|
* documents, included figures etc).
|
|
* The file name must not denote a file in our temporary directory, but a
|
|
* file that the user chose.
|
|
*/
|
|
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 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);
|
|
|
|
/** \param filename the file in question. May have either a relative
|
|
* or an absolute path.
|
|
* \param buffer_path if \c filename has a relative path, generate
|
|
* 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 relFileName(std::string const & buffer_path = empty_string()) const;
|
|
/// \param buf_path if empty, uses `pwd`
|
|
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
|
|
* an image file to another format.
|
|
*
|
|
* @param dir the directory that will contain this file with
|
|
* its mangled name. This information is used by the mangling
|
|
* algorithm when determining the maximum allowable length of
|
|
* the mangled name.
|
|
*
|
|
* An example of a mangled name:
|
|
* C:/foo bar/baz.eps -> 0C__foo_bar_baz.eps
|
|
*
|
|
* It is guaranteed that
|
|
* - two different filenames have different mangled names
|
|
* - two FileName instances with the same filename have identical
|
|
* mangled names.
|
|
*
|
|
* Only the mangled file name is returned. It is not prepended
|
|
* with @c dir.
|
|
*/
|
|
std::string
|
|
mangledFileName(std::string const & dir = empty_string()) const;
|
|
|
|
/// \return the absolute file name without its .gz, .z, .Z extension
|
|
std::string unzippedFileName() const;
|
|
|
|
private:
|
|
/// Records whether we should save (or export) the filename as a relative
|
|
/// or absolute path.
|
|
bool save_abs_path_;
|
|
};
|
|
|
|
|
|
/// \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
|
|
|
|
#endif
|