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wxWidgets/interface/wx/filename.h
Vadim Zeitlin ed19e5625b Fix wxFileName unit test under Unix after recent changes 
Don't use GetVolumeSeparator() to combine UNC or GUID volumes with
paths, this doesn't work because this kind of paths doesn't contain
colons at all.

Update the documentation to mention this.
2021-09-15 13:10:25 +02:00

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53 KiB
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/////////////////////////////////////////////////////////////////////////////
// Name: filename.h
// Purpose: interface of wxFileName
// Author: wxWidgets team
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
/**
The various values for the path format: this mainly affects the path
separator but also whether or not the path has the drive part
(as under Windows).
See wxFileName for more info.
*/
enum wxPathFormat
{
wxPATH_NATIVE = 0, //!< the path format for the current platform.
wxPATH_UNIX,
wxPATH_BEOS = wxPATH_UNIX,
wxPATH_MAC,
wxPATH_DOS,
wxPATH_WIN = wxPATH_DOS,
wxPATH_OS2 = wxPATH_DOS,
wxPATH_VMS,
wxPATH_MAX //!< Not a valid value for specifying path format
};
/**
Different conventions for human readable sizes.
@see wxFileName::GetHumanReadableSize().
@since 2.9.1
*/
enum wxSizeConvention
{
/// 1024 bytes = 1KB.
wxSIZE_CONV_TRADITIONAL,
/// 1024 bytes = 1KiB.
wxSIZE_CONV_IEC,
/// 1000 bytes = 1KB.
wxSIZE_CONV_SI
};
/**
The kind of normalization to do with the file name: these values can be
or'd together to perform several operations at once.
See wxFileName::Normalize() for more info.
*/
enum wxPathNormalize
{
/**
Replace environment variables with their values.
wxFileName understands both Unix and Windows (but only under Windows) environment
variables expansion: i.e. @c "$var", @c "$(var)" and @c "${var}" are always understood
and in addition under Windows @c "%var%" is also.
Note that when this flag is used, dollar or percent signs may be
escaped with backslashes to prevent them from being used for the
variable expansion, meaning that normalizing any path with a directory
starting with a dollar sign under Windows can give unexpected results,
as normalizing @c c:\\foo\\$bar results in @c c:\\foo$bar. Because of
this, using this flag with arbitrary paths is not recommended.
*/
wxPATH_NORM_ENV_VARS = 0x0001,
wxPATH_NORM_DOTS = 0x0002, //!< Squeeze all @c ".." and @c ".".
wxPATH_NORM_TILDE = 0x0004, //!< Replace @c "~" and @c "~user" (Unix only).
wxPATH_NORM_CASE = 0x0008, //!< If the platform is case insensitive, make lowercase the path.
wxPATH_NORM_ABSOLUTE = 0x0010, //!< Make the path absolute.
/**
Expand the path to the "long" form under Windows.
This flag converts DOS short paths in 8.3 format to long form under
Windows and does nothing under the other platforms. It is mostly
irrelevant nowadays as short paths are not used any longer in practice.
Notice that it only works for the existing file paths.
@see wxFileName::GetLongPath()
*/
wxPATH_NORM_LONG = 0x0020,
wxPATH_NORM_SHORTCUT = 0x0040, //!< Resolve the shortcut, if it is a shortcut (Windows only).
/**
Flags used by wxFileName::Normalize() by default.
This includes all normalization flags except for @c wxPATH_NORM_CASE
and notably does include @c wxPATH_NORM_ENV_VARS which may yield
unexpected results, as described above. Because of this, this flag is
deprecated and shouldn't be used in the new code and the existing code
should be reviewed to check if expanding environment variables is
really needed.
*/
wxPATH_NORM_ALL = 0x00ff & ~wxPATH_NORM_CASE
};
/**
Flags for wxFileName::Rmdir().
*/
enum
{
/// Delete the specified directory and its subdirectories if they are empty.
wxPATH_RMDIR_FULL = 1,
/**
Delete the specified directory and all the files and subdirectories in it
recursively.
This flag is obviously @b dangerous and should be used with care and
after asking the user for confirmation.
*/
wxPATH_RMDIR_RECURSIVE = 2
};
/**
Flags for wxFileName::Exists().
@since 2.9.5
*/
enum
{
wxFILE_EXISTS_REGULAR = 0x0001, //!< Check for existence of a regular file
wxFILE_EXISTS_DIR = 0x0002, //!< Check for existence of a directory
/**
Check for existence of a symlink.
Notice that this flag also sets ::wxFILE_EXISTS_NO_FOLLOW, otherwise it
would never be satisfied as wxFileName::Exists() would be checking for
the existence of the symlink target and not the symlink itself.
*/
wxFILE_EXISTS_SYMLINK = 0x1004,
wxFILE_EXISTS_DEVICE = 0x0008, //!< Check for existence of a device
wxFILE_EXISTS_FIFO = 0x0016, //!< Check for existence of a FIFO
wxFILE_EXISTS_SOCKET = 0x0032, //!< Check for existence of a socket
wxFILE_EXISTS_NO_FOLLOW = 0x1000 //!< Don't dereference a contained symbolic link
wxFILE_EXISTS_ANY = 0x1FFF, //!< Check for existence of anything
};
/**
The return value of wxFileName::GetSize() in case of error.
*/
wxULongLong wxInvalidSize;
/**
@class wxFileName
wxFileName encapsulates a file name.
This class serves two purposes: first, it provides the functions to split the
file names into components and to recombine these components in the full file
name which can then be passed to the OS file functions
(and @ref group_funcmacro_file "wxWidgets functions" wrapping them).
Second, it includes the functions for working with the files itself. Note that
to change the file data you should use wxFile class instead.
wxFileName provides functions for working with the file attributes.
When working with directory names (i.e. without filename and extension)
make sure not to misuse the file name part of this class with the last
directory. Instead initialize the wxFileName instance like this:
@code
wxFileName dirname( "C:\mydir", "" );
MyMethod( dirname.GetPath() );
@endcode
The same can be done using the static method wxFileName::DirName():
@code
wxFileName dirname = wxFileName::DirName( "C:\mydir" );
MyMethod( dirname.GetPath() );
@endcode
Accordingly, methods dealing with directories or directory names like
wxFileName::IsDirReadable() use wxFileName::GetPath() whereas methods dealing
with file names like wxFileName::IsFileReadable() use wxFileName::GetFullPath().
If it is not known whether a string contains a directory name or a complete
file name (such as when interpreting user input) you need to use the static
function wxFileName::DirExists() (or its identical variants wxDir::Exists() and
wxDirExists()) and construct the wxFileName instance accordingly.
This will only work if the directory actually exists, of course:
@code
wxString user_input;
// get input from user
wxFileName fname;
if (wxDirExists(user_input))
fname.AssignDir( user_input );
else
fname.Assign( user_input );
@endcode
Please note that many wxFileName methods accept the path format argument
which is by @c wxPATH_NATIVE by default meaning to use the path format
native for the current platform.
The path format affects the operation of wxFileName functions in several ways:
first and foremost, it defines the path separator character to use, but it
also affects other things such as whether the path has the drive part or not.
See wxPathFormat for more info.
@section filename_format File name format
wxFileName currently supports the file names in the Unix, DOS/Windows,
Mac OS and VMS formats. Although these formats are quite different,
wxFileName tries to treat them all in the same generic way.
It supposes that all file names consist of the following parts: the volume
(also known as drive under Windows or device under VMS), the path which is
a sequence of directory names separated by the path separators and the full
filename itself which, in turn, is composed from the base file name and the
extension. All of the individual components of the file name may be empty
and, for example, the volume name is always empty under Unix, but if they
are all empty simultaneously, the filename object is considered to be in an
invalid state and wxFileName::IsOk() returns false for it.
File names can be case-sensitive or not, the function wxFileName::IsCaseSensitive()
allows determining this. The rules for determining whether the file name is
absolute or relative also depend on the file name format and the only portable way
to answer this question is to use wxFileName::IsAbsolute() or wxFileName::IsRelative()
method.
Note that on Windows,"X:" refers to the current working directory on drive X.
Therefore, a wxFileName instance constructed from for example "X:dir/file.ext"
treats the portion beyond drive separator as being relative to that directory.
To ensure that the filename is absolute, you may use wxFileName::MakeAbsolute().
There is also an inverse function wxFileName::MakeRelativeTo() which undoes
what wxFileName::Normalize(wxPATH_NORM_DOTS) does.
Other functions returning information about the file format provided by this
class are wxFileName::GetVolumeSeparator(), wxFileName::IsPathSeparator().
@section filename_construction File name construction
You can initialize a wxFileName instance using one of the following functions:
@li wxFileName::wxFileName()
@li wxFileName::Assign()
@li wxFileName::AssignCwd()
@li wxFileName::AssignDir()
@li wxFileName::AssignHomeDir()
@li wxFileName::AssignTempFileName()
@li wxFileName::DirName()
@li wxFileName::FileName()
@li wxFileName::operator=()
@section filename_tests File name tests
Before doing other tests, you should use wxFileName::IsOk() to verify that
the filename is well defined. If it is, FileExists() can be used to test whether
a file with such name exists and wxFileName::DirExists() can be used to test
for directory existence.
File names should be compared using the wxFileName::SameAs() method or
wxFileName::operator==(). For testing basic access modes, you can use:
@li wxFileName::IsDirWritable()
@li wxFileName::IsDirReadable()
@li wxFileName::IsFileWritable()
@li wxFileName::IsFileReadable()
@li wxFileName::IsFileExecutable()
@section filename_components File name components
These functions allow to examine and modify the individual directories
of the path:
@li wxFileName::AppendDir()
@li wxFileName::InsertDir()
@li wxFileName::GetDirCount()
@li wxFileName::PrependDir()
@li wxFileName::RemoveDir()
@li wxFileName::RemoveLastDir()
To change the components of the file name individually you can use the
following functions:
@li wxFileName::GetExt()
@li wxFileName::GetName()
@li wxFileName::GetVolume()
@li wxFileName::HasExt()
@li wxFileName::HasName()
@li wxFileName::HasVolume()
@li wxFileName::SetExt()
@li wxFileName::ClearExt()
@li wxFileName::SetEmptyExt()
@li wxFileName::SetName()
@li wxFileName::SetVolume()
@section filename_operations File name operations
These methods allow to work with the file creation, access and modification
times. Note that not all filesystems under all platforms implement these times
in the same way. For example, the access time under Windows has a resolution of
one day (so it is really the access date and not time). The access time may be
updated when the file is executed or not depending on the platform.
@li wxFileName::GetModificationTime()
@li wxFileName::GetTimes()
@li wxFileName::SetTimes()
@li wxFileName::Touch()
Other file system operations functions are:
@li wxFileName::Mkdir()
@li wxFileName::Rmdir()
@section symlink_behavior Behavior with symlinks
wxFileName instances can store the path to symlinks on systems that support them.
When the path is for a symlink, the behavior of the following methods can be modified
to either operate on the symlink itself or on the file the link points to.
@li wxFileName::FileExists()
@li wxFileName::DirExists()
@li wxFileName::Exists()
@li wxFileName::SameAs()
@li wxFileName::GetTimes()
By default, those functions will operate on the target of the link, but they can be
made to operate on the link itself by calling wxFileName::DontFollowLink(). The current
link-following mode can be examined by calling wxFileName::ShouldFollowLink().
The wxFileName::ResolveLink() method can be used to get the absolute path for the target
of the symlink.
@library{wxbase}
@category{file}
*/
class wxFileName
{
public:
/**
Default constructor.
*/
wxFileName();
/**
Copy constructor.
*/
wxFileName(const wxFileName& filename);
/**
Constructor taking a full filename.
If it terminates with a '/', a directory path is constructed
(the name will be empty), otherwise a file name and extension
are extracted from it.
*/
wxFileName(const wxString& fullpath,
wxPathFormat format = wxPATH_NATIVE);
/**
Constructor a directory name and file name.
*/
wxFileName(const wxString& path, const wxString& name,
wxPathFormat format = wxPATH_NATIVE);
/**
Constructor from a directory name, base file name and extension.
*/
wxFileName(const wxString& path, const wxString& name,
const wxString& ext,
wxPathFormat format = wxPATH_NATIVE);
/**
Constructor from a volume name, a directory name, base file name and extension.
*/
wxFileName(const wxString& volume, const wxString& path,
const wxString& name,
const wxString& ext,
wxPathFormat format = wxPATH_NATIVE);
/**
Appends a directory component to the path.
This component should contain a single directory name level, i.e. not
contain any path or volume separators nor should it be empty, otherwise
the function does nothing and returns false (and generates an assert
failure in debug build).
Notice that the return value is only available in wxWidgets 2.9.5 or
later.
*/
bool AppendDir(const wxString& dir);
/**
Creates the file name from another filename object.
*/
void Assign(const wxFileName& filepath);
/**
Creates the file name from a full file name with a path.
*/
void Assign(const wxString& fullpath,
wxPathFormat format = wxPATH_NATIVE);
/**
Creates the file name from volume, path, name and extension.
*/
void Assign(const wxString& volume, const wxString& path,
const wxString& name,
const wxString& ext,
bool hasExt,
wxPathFormat format = wxPATH_NATIVE);
/**
Creates the file name from volume, path, name and extension.
*/
void Assign(const wxString& volume, const wxString& path,
const wxString& name,
const wxString& ext,
wxPathFormat format = wxPATH_NATIVE);
/**
Creates the file name from file path and file name.
*/
void Assign(const wxString& path, const wxString& name,
wxPathFormat format = wxPATH_NATIVE);
/**
Creates the file name from path, name and extension.
*/
void Assign(const wxString& path, const wxString& name,
const wxString& ext,
wxPathFormat format = wxPATH_NATIVE);
/**
Makes this object refer to the current working directory on the specified
volume (or current volume if @a volume is empty).
@see GetCwd()
*/
void AssignCwd(const wxString& volume = wxEmptyString);
/**
Sets this file name object to the given directory name.
The name and extension will be empty.
*/
void AssignDir(const wxString& dir,
wxPathFormat format = wxPATH_NATIVE);
/**
Sets this file name object to the home directory.
*/
void AssignHomeDir();
/**
The function calls CreateTempFileName() to create a temporary file
and sets this object to the name of the file.
If a temporary file couldn't be created, the object is put into
an invalid state (see IsOk()).
*/
void AssignTempFileName(const wxString& prefix);
/**
The function calls CreateTempFileName() to create a temporary
file name and open @a fileTemp with it.
If the file couldn't be opened, the object is put into
an invalid state (see IsOk()).
*/
void AssignTempFileName(const wxString& prefix, wxFile* fileTemp);
/**
The function calls CreateTempFileName() to create a temporary
file name and open @a fileTemp with it.
If the file couldn't be opened, the object is put into
an invalid state (see IsOk()).
*/
void AssignTempFileName(const wxString& prefix, wxFFile* fileTemp);
/**
Reset all components to default, uninitialized state.
*/
void Clear();
/**
Removes the extension from the file name resulting in a
file name with no trailing dot.
@see SetExt(), SetEmptyExt()
*/
void ClearExt();
/**
Returns a temporary file name starting with the given @e prefix.
If @a prefix is an absolute path and ends in a separator, the
temporary file is created in this directory; if it is an absolute
filepath or there is no separator, the temporary file is created in its
path, with the 'name' segment prepended to the temporary filename;
otherwise it is created in the default system directory for temporary
files or in the current directory.
If the function succeeds, the temporary file is actually created.
If @a fileTemp is not @NULL, this wxFile will be opened using the name of
the temporary file. Where possible this is done in an atomic way to ensure that
no race condition occurs between creating the temporary file name and opening
it, which might lead to a security compromise on multiuser systems.
If @a fileTemp is @NULL, the file is created but not opened.
Under Unix, the temporary file will have read and write permissions for the
owner only, to minimize security problems.
@param prefix
Location to use for the temporary file name construction. If @a prefix
is a directory it must have a terminal separator
@param fileTemp
The file to open, or @NULL just to get the name
@return The full temporary filepath, or an empty string on error.
*/
static wxString CreateTempFileName(const wxString& prefix,
wxFile* fileTemp = NULL);
/**
This is the same as CreateTempFileName(const wxString &prefix, wxFile *fileTemp)
but takes a wxFFile parameter instead of wxFile.
*/
static wxString CreateTempFileName(const wxString& prefix,
wxFFile* fileTemp = NULL);
/**
Returns @true if the directory with this name exists.
Notice that this function tests the directory part of this object,
i.e. the string returned by GetPath(), and not the full path returned
by GetFullPath().
@see FileExists(), Exists()
*/
bool DirExists() const;
/**
Returns @true if the directory with name @a dir exists.
@see FileExists(), Exists()
*/
static bool DirExists(const wxString& dir);
/**
Returns the object corresponding to the directory with the given name.
The @a dir parameter may have trailing path separator or not.
*/
static wxFileName DirName(const wxString& dir,
wxPathFormat format = wxPATH_NATIVE);
/**
Turns off symlink dereferencing.
By default, all operations in this class work on the target of a
symbolic link (symlink) if the path of the file is actually a symlink.
Using this method allows turning off this "symlink following" behaviour
and apply the operations to this path itself, even if it is a symlink.
The following methods are currently affected by this option:
- GetTimes() (but not SetTimes() as there is no portable way to
change the time of symlink itself).
- Existence checks: FileExists(), DirExists() and Exists() (notice
that static versions of these methods always follow symlinks).
- IsSameAs().
@see ShouldFollowLink()
@since 2.9.5
*/
void DontFollowLink();
/**
Calls the static overload of this function with the full path of this
object.
@since 2.9.4 (@a flags is new since 2.9.5)
*/
bool Exists(int flags = wxFILE_EXISTS_ANY) const;
/**
Returns @true if either a file or a directory or something else with
this name exists in the file system.
Don't dereference @a path if it is a symbolic link and @a flags
argument contains ::wxFILE_EXISTS_NO_FOLLOW.
This method is equivalent to @code FileExists() || DirExists() @endcode
under Windows, but under Unix it also returns true if the file
identifies a special file system object such as a device, a socket or a
FIFO.
Alternatively you may check for the existence of a file system entry of
a specific type by passing the appropriate @a flags (this parameter is
new since wxWidgets 2.9.5). E.g. to test for a symbolic link existence
you could use ::wxFILE_EXISTS_SYMLINK.
@since 2.9.4
@see FileExists(), DirExists()
*/
static bool Exists(const wxString& path, int flags = wxFILE_EXISTS_ANY);
/**
Returns @true if the file with this name exists.
@see DirExists(), Exists()
*/
bool FileExists() const;
/**
Returns @true if the file with name @a file exists.
@see DirExists(), Exists()
*/
static bool FileExists(const wxString& file);
/**
Returns the file name object corresponding to the given @e file. This
function exists mainly for symmetry with DirName().
*/
static wxFileName FileName(const wxString& file,
wxPathFormat format = wxPATH_NATIVE);
/**
Returns full absolute path for this file.
This is just a convenient shortcut using MakeAbsolute() and
GetFullPath() internally.
@since 3.1.6
*/
wxString GetAbsolutePath(const wxString& cwd = wxEmptyString,
wxPathFormat format = wxPATH_NATIVE) const;
/**
Retrieves the value of the current working directory on the specified volume.
If the volume is empty, the program's current working directory is returned for
the current volume.
@return The string containing the current working directory or an empty
string on error.
@see AssignCwd()
*/
static wxString GetCwd(const wxString& volume = wxEmptyString);
/**
Returns the number of directories in the file name.
*/
size_t GetDirCount() const;
/**
Returns the directories in string array form.
*/
const wxArrayString& GetDirs() const;
/**
Returns the file name extension.
*/
wxString GetExt() const;
/**
Returns the characters that can't be used in filenames and directory names
for the specified format.
*/
static wxString GetForbiddenChars(wxPathFormat format = wxPATH_NATIVE);
/**
Returns the canonical path format for this platform.
*/
static wxPathFormat GetFormat(wxPathFormat format = wxPATH_NATIVE);
/**
Returns the full name (including extension but excluding directories).
*/
wxString GetFullName() const;
/**
Returns the full path with name and extension.
*/
wxString GetFullPath(wxPathFormat format = wxPATH_NATIVE) const;
/**
Returns the home directory.
*/
static wxString GetHomeDir();
//@{
/**
Returns the representation of the file size in a human-readable form.
In the first version, the size of this file is used. In the second one,
the specified size @a bytes is used.
If the file size could not be retrieved or @a bytes is ::wxInvalidSize
or zero, the @c failmsg string is returned.
Otherwise the returned string is a floating-point number with @c
precision decimal digits followed by the abbreviation of the unit used.
By default the traditional, although incorrect, convention of using SI
units for multiples of 1024 is used, i.e. returned string will use
suffixes of B, KB, MB, GB, TB for bytes, kilobytes, megabytes,
gigabytes and terabytes respectively. With the IEC convention the names
of the units are changed to B, KiB, MiB, GiB and TiB for bytes,
kibibytes, mebibytes, gibibytes and tebibytes. Finally, with SI
convention the same B, KB, MB, GB and TB suffixes are used but in their
correct SI meaning, i.e. as multiples of 1000 and not 1024.
Support for the different size conventions is new in wxWidgets 2.9.1,
in previous versions only the traditional convention was implemented.
*/
wxString
GetHumanReadableSize(const wxString& failmsg = _("Not available"),
int precision = 1,
wxSizeConvention conv = wxSIZE_CONV_TRADITIONAL) const;
static wxString
GetHumanReadableSize(const wxULongLong& bytes,
const wxString& nullsize = _("Not available"),
int precision = 1,
wxSizeConvention conv = wxSIZE_CONV_TRADITIONAL);
//@}
/**
Return the long form of the path (returns identity on non-Windows platforms).
*/
wxString GetLongPath() const;
/**
Returns the last time the file was last modified.
*/
wxDateTime GetModificationTime() const;
/**
Returns the name part of the filename (without extension).
@see GetFullName()
*/
wxString GetName() const;
/**
Returns the path part of the filename (without the name or extension).
The possible flags values are:
- @b wxPATH_GET_VOLUME:
Return the path with the volume (does nothing for the filename formats
without volumes), otherwise the path without volume part is returned.
- @b wxPATH_GET_SEPARATOR:
Return the path with the trailing separator, if this flag is not given
there will be no separator at the end of the path.
- @b wxPATH_NO_SEPARATOR:
Don't include the trailing separator in the returned string. This is
the default (the value of this flag is 0) and exists only for symmetry
with wxPATH_GET_SEPARATOR.
@note If the path is a toplevel one (e.g. @c "/" on Unix or @c "C:\" on
Windows), then the returned path will contain trailing separator
even with @c wxPATH_NO_SEPARATOR.
*/
wxString GetPath(int flags = wxPATH_GET_VOLUME,
wxPathFormat format = wxPATH_NATIVE) const;
/**
Returns the usually used path separator for this format.
For all formats but @c wxPATH_DOS there is only one path separator anyhow,
but for DOS there are two of them and the native one, i.e. the backslash
is returned by this method.
@see GetPathSeparators()
*/
static wxUniChar GetPathSeparator(wxPathFormat format = wxPATH_NATIVE);
/**
Returns the string containing all the path separators for this format.
For all formats but @c wxPATH_DOS this string contains only one character
but for DOS and Windows both @c '/' and @c '\' may be used as separators.
@see GetPathSeparator()
*/
static wxString GetPathSeparators(wxPathFormat format = wxPATH_NATIVE);
/**
Returns the string of characters which may terminate the path part.
This is the same as GetPathSeparators() except for VMS
path format where ] is used at the end of the path part.
*/
static wxString GetPathTerminators(wxPathFormat format = wxPATH_NATIVE);
/**
Returns the path with the trailing separator, useful for appending the name
to the given path.
This is the same as calling
@code
GetPath(wxPATH_GET_VOLUME | wxPATH_GET_SEPARATOR, format)
@endcode
*/
wxString GetPathWithSep(wxPathFormat format = wxPATH_NATIVE) const;
/**
Return the short form of the path (returns identity on non-Windows platforms).
*/
wxString GetShortPath() const;
/**
Returns the size of the file If the file does not exist or its size could
not be read (because e.g. the file is locked by another process) the returned
value is ::wxInvalidSize.
*/
wxULongLong GetSize() const;
/**
Returns the size of the file If the file does not exist or its size could
not be read (because e.g. the file is locked by another process) the returned
value is ::wxInvalidSize.
*/
static wxULongLong GetSize(const wxString& filename);
/**
Returns the directory used for temporary files, for current user. Same as
wxStandardPaths::GetTempDir().
*/
static wxString GetTempDir();
/**
Returns the last access, last modification and creation times.
The last access time is updated whenever the file is read or written
(or executed in the case of Windows), last modification time is only
changed when the file is written to.
Finally, the creation time is indeed the time when the file was created
under Windows and the inode change time under Unix (as it is impossible to
retrieve the real file creation time there anyhow) which can also be changed
by many operations after the file creation.
If no filename or extension is specified in this instance of wxFileName
(and therefore IsDir() returns @true) then this function will return the
directory times of the path specified by GetPath(), otherwise the file
times of the file specified by GetFullPath().
Any of the pointers may be @NULL if the corresponding time is not needed.
@return @true on success, @false if we failed to retrieve the times.
*/
bool GetTimes(wxDateTime* dtAccess, wxDateTime* dtMod,
wxDateTime* dtCreate) const;
/**
Returns the string containing the volume for this file name.
The returned string is empty if this object doesn't have a volume name,
as is always the case for the paths in Unix format which don't support
volumes at all.
Note that for @c wxPATH_DOS format paths, the returned string may have
one of the following forms:
- Just a single letter, for the usual drive letter volumes, e.g. @c C.
- A share name preceded by a double backslash, e.g. @c \\\\share.
- A GUID volume preceded by a double backslash and a question mark,
e.g. @c \\\\?\\Volume{12345678-9abc-def0-1234-56789abcdef0}.
*/
wxString GetVolume() const;
/**
Returns the string separating the volume from the path for this format.
Note that for @c wxPATH_DOS paths this string can only be used for
single-character volumes representing the drive letters, but not with
the UNC or GUID volumes (see their description in GetVolume()
documentation). For this reason, its use should be avoided, prefer
using wxFileName constructor and Assign() overload taking the volume
and the path as separate arguments to combining the volume and the path
into a single string using the volume separator between them.
*/
static wxString GetVolumeSeparator(wxPathFormat format = wxPATH_NATIVE);
/**
This function builds a volume path string, for example "C:\\".
Implemented for the platforms which use drive letters, i.e. MSW only.
@since 2.9.0
@param drive
The drive letter, 'A' through 'Z' or 'a' through 'z'.
@param flags
@c wxPATH_NO_SEPARATOR or @c wxPATH_GET_SEPARATOR to omit or include
the trailing path separator, the default is to include it.
@return Volume path string.
*/
static wxString GetVolumeString(char drive, int flags = wxPATH_GET_SEPARATOR);
/**
Returns @true if an extension is present.
*/
bool HasExt() const;
/**
Returns @true if a name is present.
*/
bool HasName() const;
/**
Returns @true if a volume specifier is present.
*/
bool HasVolume() const;
/**
Inserts a directory component before the zero-based position in the
directory list.
As with AppendDir(), @a dir must be a single directory name and the
function returns @false and does nothing else if it isn't.
Notice that the return value is only available in wxWidgets 2.9.5 or
later.
*/
bool InsertDir(size_t before, const wxString& dir);
/**
Returns @true if this filename is absolute.
*/
bool IsAbsolute(wxPathFormat format = wxPATH_NATIVE) const;
/**
Returns @true if the file names of this type are case-sensitive.
*/
static bool IsCaseSensitive(wxPathFormat format = wxPATH_NATIVE);
/**
Returns @true if this object represents a directory, @false otherwise
(i.e. if it is a file).
Note that this method doesn't test whether the directory or file really
exists, you should use DirExists() or FileExists() for this.
*/
bool IsDir() const;
/**
Returns @true if the directory component of this instance is an existing
directory and this process has read permissions on it. Read permissions
on a directory mean that you can list the directory contents but it
doesn't imply that you have read permissions on the files contained.
*/
bool IsDirReadable() const;
/**
Returns @true if the given @e dir is an existing directory and this process
has read permissions on it. Read permissions on a directory mean that you
can list the directory contents but it doesn't imply that you have read
permissions on the files contained.
*/
static bool IsDirReadable(const wxString& dir);
/**
Returns @true if the directory component of this instance
is an existing directory and this process has write permissions on it.
Write permissions on a directory mean that you can create new files in the
directory.
*/
bool IsDirWritable() const;
/**
Returns @true if the given @a dir is an existing directory and this
process has write permissions on it.
Write permissions on a directory mean that you can create new files in the
directory.
*/
static bool IsDirWritable(const wxString& dir);
/**
Returns @true if a file with this name exists and if this process has execute
permissions on it.
*/
bool IsFileExecutable() const;
/**
Returns @true if a file with this name exists and if this process has execute
permissions on it.
*/
static bool IsFileExecutable(const wxString& file);
/**
Returns @true if a file with this name exists and if this process has read
permissions on it.
*/
bool IsFileReadable() const;
/**
Returns @true if a file with this name exists and if this process has read
permissions on it.
*/
static bool IsFileReadable(const wxString& file);
/**
Returns @true if a file with this name exists and if this process has write
permissions on it.
*/
bool IsFileWritable() const;
/**
Returns @true if a file with this name exists and if this process has write
permissions on it.
*/
static bool IsFileWritable(const wxString& file);
/**
Returns @true if the filename is valid, @false if it is not initialized yet.
The assignment functions and Clear() may reset the object to the uninitialized,
invalid state (the former only do it on failure).
*/
bool IsOk() const;
/**
Returns @true if the char is a path separator for this format.
*/
static bool IsPathSeparator(wxChar ch,
wxPathFormat format = wxPATH_NATIVE);
/**
Returns @true if the volume part of the path is a unique volume name.
This function will always return @false if the path format is not
wxPATH_DOS.
Unique volume names are Windows volume identifiers which remain the same
regardless of where the volume is actually mounted. Example of a path
using a volume name could be
@code
\\?\Volume{8089d7d7-d0ac-11db-9dd0-806d6172696f}\Program Files\setup.exe
@endcode
@since 2.9.1
*/
static bool IsMSWUniqueVolumeNamePath(const wxString& path,
wxPathFormat format = wxPATH_NATIVE);
/**
Returns @true if this filename is not absolute.
*/
bool IsRelative(wxPathFormat format = wxPATH_NATIVE) const;
/**
Make the file name absolute.
This is a shortcut for
@code
wxFileName::Normalize(wxPATH_NORM_DOTS | wxPATH_NORM_ABSOLUTE |
wxPATH_NORM_TILDE, cwd, format)
@endcode
@see MakeRelativeTo(), Normalize(), IsAbsolute()
*/
bool MakeAbsolute(const wxString& cwd = wxEmptyString,
wxPathFormat format = wxPATH_NATIVE);
/**
This function tries to put this file name in a form relative to
@a pathBase.
In other words, it returns the file name which should be used to access
this file if the current directory were pathBase.
@param pathBase
The directory to use as root, current directory is used by default
@param format
The file name format, native by default
@return @true if the file name has been changed, @false if we failed to do
anything with it (currently this only happens if the file name
is on a volume different from the volume specified by @a pathBase).
@see Normalize()
*/
bool MakeRelativeTo(const wxString& pathBase = wxEmptyString,
wxPathFormat format = wxPATH_NATIVE);
/**
Creates a directory.
@param perm
The permissions for the newly created directory.
See the ::wxPosixPermissions enumeration for more info.
@param flags
If the flags contain @c wxPATH_MKDIR_FULL flag, try to create each
directory in the path and also don't return an error if the target
directory already exists.
@return Returns @true if the directory was successfully created, @false
otherwise.
*/
bool Mkdir(int perm = wxS_DIR_DEFAULT, int flags = 0) const;
/**
Creates a directory.
@param dir
The directory to create
@param perm
The permissions for the newly created directory.
See the ::wxPosixPermissions enumeration for more info.
@param flags
If the flags contain @c wxPATH_MKDIR_FULL flag, try to create each
directory in the path and also don't return an error if the target
directory already exists.
@return Returns @true if the directory was successfully created, @false
otherwise.
*/
static bool Mkdir(const wxString& dir, int perm = wxS_DIR_DEFAULT,
int flags = 0);
/**
Normalize the path.
With the default flags value, the path will be made absolute, without
any ".." and ".", and, for the Unix format paths, any occurrences of
tilde (@c ~) character will be replaced with the home directory of the
user following it.
Notice that in some rare cases normalizing a valid path may result in
an invalid wxFileName object. E.g. normalizing "./" path using
wxPATH_NORM_DOTS but not wxPATH_NORM_ABSOLUTE will result in a
completely empty and thus invalid object. As long as there is a non
empty file name the result of normalization will be valid however.
@param flags
The kind of normalization to do with the file name. It can be
any or-combination of the ::wxPathNormalize enumeration values.
These values should be explicitly specified, omitting them uses the
deprecated wxPATH_NORM_ALL value which is not recommended, see
wxPathNormalize enum for more details.
@param cwd
If not empty, this directory will be used instead of current
working directory in normalization (see @c wxPATH_NORM_ABSOLUTE).
@param format
The file name format to use when processing the paths, native by default.
@return @true if normalization was successfully or @false otherwise.
*/
bool Normalize(int flags,
const wxString& cwd = wxEmptyString,
wxPathFormat format = wxPATH_NATIVE);
/**
Prepends a directory to the file path.
Please see AppendDir() for important notes.
*/
void PrependDir(const wxString& dir);
/**
Removes the specified directory component from the path.
@see GetDirCount()
*/
void RemoveDir(size_t pos);
/**
Removes last directory component from the path.
*/
void RemoveLastDir();
/**
If the path contains the value of the environment variable named @a envname
then this function replaces it with the string obtained from
wxString::Format(replacementFmtString, value_of_envname_variable).
This function is useful to make the path shorter or to make it dependent
from a certain environment variable.
Normalize() with @c wxPATH_NORM_ENV_VARS can perform the opposite of this
function (depending on the value of @a replacementFmtString).
The name and extension of this filename are not modified.
Example:
@code
wxFileName fn("/usr/openwin/lib/someFile");
fn.ReplaceEnvVariable("OPENWINHOME");
// now fn.GetFullPath() == "$OPENWINHOME/lib/someFile"
@endcode
@since 2.9.0
@return @true if the operation was successful (which doesn't mean
that something was actually replaced, just that ::wxGetEnv
didn't fail).
*/
bool ReplaceEnvVariable(const wxString& envname,
const wxString& replacementFmtString = "$%s",
wxPathFormat format = wxPATH_NATIVE);
/**
Replaces, if present in the path, the home directory for the given user
(see ::wxGetHomeDir) with a tilde (~).
Normalize() with @c wxPATH_NORM_TILDE performs the opposite of this
function.
The name and extension of this filename are not modified.
@since 2.9.0
@return @true if the operation was successful (which doesn't mean
that something was actually replaced, just that ::wxGetHomeDir
didn't fail).
*/
bool ReplaceHomeDir(wxPathFormat format = wxPATH_NATIVE);
/**
Find the absolute path of the file/directory that is pointed to by this
path.
If this path isn't a symlink, then this function will return the current
path. If the path does not exist on disk, An empty wxFileName instance
will be returned.
@note This is only supported on Unix-like platforms (e.g. wxGTK, wxOSX),
on other platforms (e.g. wxMSW) this function just returns the
current path.
@since 3.1.5
@return The absolute path that the current symlink path points to.
*/
wxFileName ResolveLink();
/**
Deletes the specified directory from the file system.
@param flags
With default value, the directory is removed only if it is empty.
If wxPATH_RMDIR_FULL is specified, it is removed even if it
contains subdirectories, provided that there are no files in
neither this directory nor its subdirectories. If flags contains
wxPATH_RMDIR_RECURSIVE, then the directory is removed with all the
files and directories under it.
@return Returns @true if the directory was successfully deleted, @false
otherwise.
*/
bool Rmdir(int flags = 0) const;
/**
Deletes the specified directory from the file system.
@param dir
The directory to delete
@param flags
With default value, the directory is removed only if it is empty.
If wxPATH_RMDIR_FULL is specified, it is removed even if it
contains subdirectories, provided that there are no files in
neither this directory nor its subdirectories. If flags contains
wxPATH_RMDIR_RECURSIVE, then the directory is removed with all the
files and directories under it.
@return Returns @true if the directory was successfully deleted, @false
otherwise.
*/
static bool Rmdir(const wxString& dir, int flags = 0);
/**
Compares the filename using the rules of this platform.
*/
bool SameAs(const wxFileName& filepath,
wxPathFormat format = wxPATH_NATIVE) const;
/**
Changes the current working directory.
*/
bool SetCwd() const;
/**
Changes the current working directory.
*/
static bool SetCwd(const wxString& cwd);
/**
Sets the extension of the file name to be an empty extension.
This is different from having no extension at all as the file
name will have a trailing dot after a call to this method.
@see SetExt(), ClearExt()
*/
void SetEmptyExt();
/**
Sets the extension of the file name.
Setting an empty string as the extension will remove the extension
resulting in a file name without a trailing dot, unlike a call to
SetEmptyExt().
@see SetEmptyExt(), ClearExt()
*/
void SetExt(const wxString& ext);
/**
The full name is the file name and extension (but without the path).
*/
void SetFullName(const wxString& fullname);
/**
Sets the name part (without extension).
@see SetFullName()
*/
void SetName(const wxString& name);
/**
Sets the path.
The @a path argument includes both the path and the volume, if
supported by @a format.
Calling this function doesn't affect the name and extension components,
to change them as well you can use Assign() or just an assignment
operator.
@see GetPath()
*/
void SetPath(const wxString& path, wxPathFormat format = wxPATH_NATIVE);
/**
Sets permissions for this file or directory.
@param permissions
The new permissions: this should be a combination of
::wxPosixPermissions enum elements.
@since 3.0
@note If this is a symbolic link and it should not be followed
this call will fail.
@return @true on success, @false if an error occurred (for example,
the file doesn't exist).
*/
bool SetPermissions(int permissions);
/**
Converts URL into a well-formed filename.
The URL must use the @c file protocol.
If the URL does not use @c file protocol
wxFileName object may not be good or may not exist
@since 3.1.3
*/
static wxFileName URLToFileName(const wxString& url);
/**
Converts wxFileName into an URL.
@see URLToFileName(), wxFileName
@since 3.1.3
*/
static wxString FileNameToURL(const wxFileName& filename);
/**
Sets the file creation and last access/modification times (any of the pointers
may be @NULL).
Notice that the file creation time can't be changed under Unix, so @a
dtCreate is ignored there (but @true is still returned). Under Windows
all three times can be set.
*/
bool SetTimes(const wxDateTime* dtAccess,
const wxDateTime* dtMod,
const wxDateTime* dtCreate) const;
/**
Sets the volume specifier.
*/
void SetVolume(const wxString& volume);
/**
Return whether some operations will follow symlink.
By default, file operations "follow symlink", i.e. operate on its
target and not on the symlink itself. See DontFollowLink() for more
information.
@since 2.9.5
*/
bool ShouldFollowLink() const;
//@{
/**
This function splits a full file name into components: the volume (with the
first version) path (including the volume in the second version), the base name
and the extension.
Any of the output parameters (@e volume, @e path, @a name or @e ext) may
be @NULL if you are not interested in the value of a particular component.
Also, @a fullpath may be empty on entry.
On return, @a path contains the file path (without the trailing separator),
@a name contains the file name and @a ext contains the file extension
without leading dot. All three of them may be empty if the corresponding
component is. The old contents of the strings pointed to by these parameters
will be overwritten in any case (if the pointers are not @NULL).
Note that for a filename "foo." the extension is present, as indicated by the
trailing dot, but empty. If you need to cope with such cases, you should use
@a hasExt instead of relying on testing whether @a ext is empty or not.
*/
static void SplitPath(const wxString& fullpath,
wxString* volume,
wxString* path,
wxString* name,
wxString* ext,
bool* hasExt = NULL,
wxPathFormat format = wxPATH_NATIVE);
static void SplitPath(const wxString& fullpath,
wxString* volume,
wxString* path,
wxString* name,
wxString* ext,
wxPathFormat format);
static void SplitPath(const wxString& fullpath,
wxString* path,
wxString* name,
wxString* ext,
wxPathFormat format = wxPATH_NATIVE);
//@}
/**
Splits the given @a fullpath into the volume part (which may be empty) and
the pure path part, not containing any volume.
@see SplitPath()
*/
static void SplitVolume(const wxString& fullpath,
wxString* volume,
wxString* path,
wxPathFormat format = wxPATH_NATIVE);
/**
Strip the file extension.
This function does more than just removing everything after the last
period from the string, for example it will return the string ".vimrc"
unchanged because the part after the period is not an extension but the
file name in this case. You can use wxString::BeforeLast() to really
get just the part before the last period (but notice that that function
returns empty string if period is not present at all unlike this
function which returns the @a fullname unchanged in this case).
@param fullname
File path including name and, optionally, extension.
@return
File path without extension
@since 2.9.0
*/
static wxString StripExtension(const wxString& fullname);
/**
Sets the access and modification times to the current moment.
*/
bool Touch() const;
/**
Returns @true if the filenames are different. The string @e filenames
is interpreted as a path in the native filename format.
*/
bool operator!=(const wxFileName& filename) const;
/**
Returns @true if the filenames are different. The string @e filenames
is interpreted as a path in the native filename format.
*/
bool operator!=(const wxString& filename) const;
/**
Returns @true if the filenames are equal. The string @e filenames is
interpreted as a path in the native filename format.
*/
bool operator==(const wxFileName& filename) const;
/**
Returns @true if the filenames are equal. The string @e filenames is
interpreted as a path in the native filename format.
*/
bool operator==(const wxString& filename) const;
/**
Assigns the new value to this filename object.
*/
wxFileName& operator=(const wxFileName& filename);
/**
Assigns the new value to this filename object.
*/
wxFileName& operator=(const wxString& filename);
};
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