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 \helpref{wxWindows functions}{filefunctions} wrapping them).
+functions (and \helpref{wxWidgets functions}{filefunctions} wrapping them).
Second, it includes the functions for working with the files itself. Note that
to change the file data you should use \helpref{wxFile}{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:
+
+\begin{verbatim}
+wxFileName dirname( wxT("C:\mydir"), wxEmptyString );
+MyMethod( dirname.GetPath() );
+\end{verbatim}
+
+The same can be done using the static method \helpref{wxFileName::DirName}{wxfilenamedirname}:
+
+\begin{verbatim}
+wxFileName dirname = wxFileName::DirName( wxT("C:\mydir") );
+MyMethod( dirname.GetPath() );
+\end{verbatim}
+
+Accordingly, methods dealing with directories or directory names
+like \helpref{IsDirReadable}{wxfilenameisdirreadable} use
+\helpref{GetPath}{wxfilenamegetpath} whereas methods dealing
+with file names like \helpref{IsFileReadable}{wxfilenameisfilereadable}
+use \helpref{GetFullPath}{wxfilenamegetfullpath}.
+
+If it is not known wether a string contains a directory name or
+a complete file name (such as when interpreting user input) you need to use
+the static function \helpref{wxFileName::DirExists}{wxfilenamedirexists}
+(or its identical variants \helpref{wxDir::Exists}{wxdirexists} and
+\helpref{wxDirExists}{functionwxdirexists}) and construct the wxFileName
+instance accordingly. This will only work if the directory actually exists,
+of course:
+
+\begin{verbatim}
+wxString user_input;
+// get input from user
+
+wxFileName fname;
+if (wxDirExists(user_input))
+ fname.AssignDir( user_input );
+else
+ fname.Assign( user_input );
+\end{verbatim}
+
\wxheading{Derived from}
No base class
+\wxheading{Include files}
+
+<wx/filename.h>
+
\wxheading{Data structures}
Many wxFileName methods accept the path format argument which is by\rtfsp
\latexignore{\rtfignore{\wxheading{Function groups}}}
-\membersection{File name format}
+\membersection{File name format}\label{filenameformat}
wxFileName currently supports the file names in the Unix, DOS/Windows, Mac OS
and VMS formats. Although these formats are quite different, wxFileName tries
File names can be case-sensitive or not, the function\rtfsp
\helpref{IsCaseSensitive}{wxfilenameiscasesensitive} allows to determine this.
-The rules for determining if the file name is absolute or relative also depends
-on the file name format and the only portable way to answer to this question is
-to use \helpref{IsAbsolute}{wxfilenameisabsolute} method. To ensure that the
-filename is absolute you may use \helpref{MakeAbsolute}{wxfilenamemakeabsolute}.
-There is also an inverse function
-\helpref{MakeRelativeTo}{wxfilenamemakerelativeto} which undoes what
-\helpref{Normalize(wxPATH\_NORM\_DOTS)}{wxfilenamenormalize} does.
+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 \helpref{IsAbsolute}{wxfilenameisabsolute} or\rtfsp
+\helpref{IsRelative}{wxfilenameisrelative} 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\rtfsp
+\helpref{MakeAbsolute}{wxfilenamemakeabsolute}. There is also an inverse
+function \helpref{MakeRelativeTo}{wxfilenamemakerelativeto} which undoes
+what \helpref{Normalize(wxPATH\_NORM\_DOTS)}{wxfilenamenormalize} does.
Other functions returning information about the file format provided by this
class are \helpref{GetVolumeSeparator}{wxfilenamegetvolumeseparator},\rtfsp
\helpref{IsPathSeparator}{wxfilenameispathseparator}.
-\helpref{IsRelative}{wxfilenameisrelative}
+\membersection{File name construction}\label{filenameconstruction}
-\membersection{File name construction}
+You can initialize a wxFileName instance using one of the following functions:
-TODO.
+\helpref{wxFileName constructors}{wxfilenamewxfilename}\\
+\helpref{Assign}{wxfilenameassign}\\
+\helpref{AssignCwd}{wxfilenameassigncwd}\\
+\helpref{AssignDir}{wxfilenameassigndir}\\
+\helpref{AssignHomeDir}{wxfilenameassignhomedir}\\
+\helpref{AssignHomeTempFileName}{wxfilenameassigntempfilename}\\
+\helpref{DirName}{wxfilenamedirname}\\
+\helpref{FileName}{wxfilenamefilename}\\
+\helpref{operator $=$}{wxfilenameoperatorassign}
-\membersection{File tests}
+\membersection{File tests}\label{filetests}
-Before doing the other tests you should use \helpref{IsOk}{wxfilenameisok} to
-verify that the filename is well defined. If it is,
-\helpref{FileExists}{wxfilenamefileexists} can be used to test if a file with
-such name exists and \helpref{DirExists}{wxfilenamedirexists} - if a directory
-with this name exists.
+Before doing other tests, you should use \helpref{IsOk}{wxfilenameisok} to
+verify that the filename is well defined. If it is,\rtfsp
+\helpref{FileExists}{wxfilenamefileexists} can be used to test whether a file
+with such name exists and \helpref{DirExists}{wxfilenamedirexists} can be used
+to test for directory existence.
File names should be compared using \helpref{SameAs}{wxfilenamesameas} method
-or \helpref{$==$}{wxfilenameoperatorequal}.
+or \helpref{operator $==$}{wxfilenameoperatorequal}.
+For testing basic access modes, you can use:
-\membersection{File name components}
+\helpref{IsDirWritable}{wxfilenameisdirwritable}\\
+\helpref{IsDirReadable}{wxfilenameisdirreadable}\\
+\helpref{IsFileWritable}{wxfilenameisfilewritable}\\
+\helpref{IsFileReadable}{wxfilenameisfilereadable}\\
+\helpref{IsFileExecutable}{wxfilenameisfileexecutable}
-These functions allow to examine and modify the directories of the path:
+
+\membersection{File name components}\label{filenamecomponents}
+
+These functions allow to examine and modify the individual directories of the
+path:
\helpref{AppendDir}{wxfilenameappenddir}\\
\helpref{InsertDir}{wxfilenameinsertdir}\\
\helpref{GetDirCount}{wxfilenamegetdircount}
\helpref{PrependDir}{wxfilenameprependdir}\\
-\helpref{RemoveDir}{wxfilenameremovedir}
+\helpref{RemoveDir}{wxfilenameremovedir}\\
+\helpref{RemoveLastDir}{wxfilenameremovelastdir}
To change the components of the file name individually you can use the
following functions:
\helpref{HasName}{wxfilenamehasname}\\
\helpref{HasVolume}{wxfilenamehasvolume}\\
\helpref{SetExt}{wxfilenamesetext}\\
+\helpref{ClearExt}{wxfilenameclearext}\\
+\helpref{SetEmptyExt}{wxfilenamesetemptyext}\\
\helpref{SetName}{wxfilenamesetname}\\
\helpref{SetVolume}{wxfilenamesetvolume}\\
-\membersection{Operations}
+\membersection{Operations}\label{filenameoperations}
These methods allow to work with the file creation, access and modification
times. Note that not all filesystems under all platforms implement these times
\func{void}{Assign}{\param{const wxString\& }{fullpath}, \param{wxPathFormat }{format = wxPATH\_NATIVE}}
+\func{void}{Assign}{\param{const wxString\& }{volume}, \param{const wxString\& }{path}, \param{const wxString\& }{name}, \param{const wxString\& }{ext}, \param{bool }{hasExt}, \param{wxPathFormat }{format = wxPATH\_NATIVE}}
+
\func{void}{Assign}{\param{const wxString\& }{volume}, \param{const wxString\& }{path}, \param{const wxString\& }{name}, \param{const wxString\& }{ext}, \param{wxPathFormat }{format = wxPATH\_NATIVE}}
\func{void}{Assign}{\param{const wxString\& }{path}, \param{const wxString\& }{name}, \param{wxPathFormat }{format = wxPATH\_NATIVE}}
Reset all components to default, uninitialized state.
+\membersection{wxFileName::ClearExt}\label{wxfilenameclearext}
+
+\func{void}{SetClearExt}{\void}
+
+Removes the extension from the file name resulting in a
+file name with no trailing dot.
+
+\wxheading{See also}
+
+\helpref{SetExt}{wxfilenamesetext}
+\helpref{SetEmptyExt}{wxfilenamesetemptyext}
+
\membersection{wxFileName::CreateTempFileName}\label{wxfilenamecreatetempfilename}
\func{static wxString}{CreateTempFileName}{\param{const wxString\& }{prefix}, \param{wxFile *}{fileTemp = {\tt NULL}}}
\func{static wxString}{GetCwd}{\param{const wxString\& }{volume = ""}}
Retrieves the value of the current working directory on the specified volume. If
-the volume is empty, the programs current working directory is returned for the
+the volume is empty, the program's current working directory is returned for the
current volume.
\wxheading{Return value}
\constfunc{wxString}{GetName}{\void}
-Returns the name part of the filename.
+Returns the name part of the filename (without extension).
+
+\wxheading{See also}
+
+\helpref{GetFullName}{wxfilenamegetfullname}
+
\membersection{wxFileName::GetPath}\label{wxfilenamegetpath}
\helpref{GetPathSeparator}{wxfilenamegetpathseparator}
+\membersection{wxFileName::GetPathTerminators}\label{wxfilenamegetpathterminators}
+
+\func{static wxString}{GetPathTerminators}{\param{wxPathFormat }{format = wxPATH\_NATIVE}}
+
+Returns the string of characters which may terminate the path part. This is the
+same as \helpref{GetPathSeparators}{wxfilenamegetpathseparators} except for VMS
+path format where $]$ is used at the end of the path part.
+
+
+\membersection{wxFileName::GetPathWithSep}\label{wxfilenamegetpathwithsep}
+
+\constfunc{wxString}{GetPathWithSep}{\param{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 \helpref{GetPath}{wxfilenamegetpath}
+\texttt{(wxPATH\_GET\_VOLUME | wxPATH\_GET\_SEPARATOR, format)}.
+
+
\membersection{wxFileName::GetShortPath}\label{wxfilenamegetshortpath}
\constfunc{wxString}{GetShortPath}{\void}
Return the short form of the path (returns identity on non-Windows platforms).
+\membersection{wxFileName::GetSize}\label{wxfilenamegetsize}
+
+\constfunc{wxULongLong}{GetSize}{\void}
+
+\func{static wxULongLong}{GetSize}{\param{const wxString\& }{filename}}
+
+Returns the size of this file (first form) or the size of the given file (second form).
+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 {\tt wxInvalidSize}.
+
+
+\membersection{wxFileName::GetHumanReadableSize}\label{wxfilenamegethumanreadablesize}
+
+\constfunc{wxString}{GetHumanReadableSize}{\param{const wxString\& }{failmsg = "Not available"}, \param{int }{precision = 1}}
+
+\func{static wxString}{GetHumanReadableSize}{\param{const wxULongLong\& }{bytes}, \param{const wxString\& }{nullsize = "Not available"}, \param{int }{precision = 1}}
+
+Returns the size of this file (first form) or the given number of bytes (second form)
+in a human-readable form.
+
+If the size could not be retrieved the {\tt failmsg} string is returned (first form).
+If {\tt bytes} is {\tt wxInvalidSize} or zero, then {\tt nullsize} is returned (second form).
+
+In case of success, the returned string is a floating-point number with {\tt precision} decimal digits
+followed by the size unit (B, kB, MB, GB, TB: respectively bytes, kilobytes, megabytes, gigabytes, terabytes).
+
+
+\membersection{wxFileName::GetTempDir}\label{wxfilenamegettempdir}
+
+\func{static wxString}{GetTempDir}{\void}
+
+Returns the directory used for temporary files.
+
+
\membersection{wxFileName::GetTimes}\label{wxfilenamegettimes}
\constfunc{bool}{GetTimes}{\param{wxDateTime* }{dtAccess}, \param{wxDateTime* }{dtMod}, \param{wxDateTime* }{dtCreate}}
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 \helpref{IsDir}{wxfilenameisdir} returns {\tt true}) then
+this function will return the directory times of the path specified by
+\helpref{GetPath}{wxfilenamegetpath}, otherwise the file times of the
+file specified by \helpref{GetFullPath}{wxfilenamegetfullpath}.
+
Any of the pointers may be {\tt NULL} if the corresponding time is not
needed.
\constfunc{wxString}{GetVolume}{\void}
-Returns the string containing the volume for this file name, mepty if it
+Returns the string containing the volume for this file name, empty if it
doesn't have one or if the file system doesn't support volumes at all (for
example, Unix).
\membersection{wxFileName::InsertDir}\label{wxfilenameinsertdir}
-\func{void}{InsertDir}{\param{int }{before}, \param{const wxString\& }{dir}}
+\func{void}{InsertDir}{\param{size\_t }{before}, \param{const wxString\& }{dir}}
Inserts a directory component before the zero-based position in the directory
list. Please see \helpref{AppendDir}{wxfilenameappenddir} for important notes.
Returns {\tt true} if the file names of this type are case-sensitive.
+\membersection{wxFileName::IsDirReadable}\label{wxfilenameisdirreadable}
+
+\constfunc{bool}{IsDirReadable}{\void}
+
+\func{static bool}{IsDirReadable}{\param{const wxString\& }{dir}}
+
+Returns {\tt true} if the directory component of this instance (or given \arg{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.
+
+
+\membersection{wxFileName::IsDirWritable}\label{wxfilenameisdirwritable}
+
+\constfunc{bool}{IsDirWritable}{\void}
+
+\func{static bool}{IsDirWritable}{\param{const wxString\& }{dir}}
+
+Returns {\tt true} if the directory component of this instance (or given \arg{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.
+
+
+\membersection{wxFileName::IsFileExecutable}\label{wxfilenameisfileexecutable}
+
+\constfunc{bool}{IsFileExecutable}{\void}
+
+\func{static bool}{IsFileExecutable}{\param{const wxString\& }{file}}
+
+Returns {\tt true} if a file with this name exists and if this process has execute permissions on it.
+
+
+\membersection{wxFileName::IsFileReadable}\label{wxfilenameisfilereadable}
+
+\constfunc{bool}{IsFileReadable}{\void}
+
+\func{static bool}{IsFileReadable}{\param{const wxString\& }{file}}
+
+Returns {\tt true} if a file with this name exists and if this process has read permissions on it.
+
+
+\membersection{wxFileName::IsFileWritable}\label{wxfilenameisfilewritable}
+
+\constfunc{bool}{IsFileWritable}{\void}
+
+\func{static bool}{IsFileWritable}{\param{const wxString\& }{file}}
+
+Returns {\tt true} if a file with this name exists and if this process has write permissions on it.
+
+
\membersection{wxFileName::IsOk}\label{wxfilenameisok}
\constfunc{bool}{IsOk}{\void}
\helpref{DirExists}{wxfilenamedirexists} or
\helpref{FileExists}{wxfilenamefileexists} for this.
+\membersection{wxFileName::MacFindDefaultTypeAndCreator}\label{wxfilenamemacfinddefaulttypeandcreator}
+
+\func{static bool}{MacFindDefaultTypeAndCreator}{\param{const wxString\& }{ext}, \param{wxUint32* }{type}, \param{wxUint32* }{creator}}
+
+On Mac OS, gets the common type and creator for the given extension.
+
+\membersection{wxFileName::MacRegisterDefaultTypeAndCreator}\label{wxfilenamemacregisterdefaulttypeandcreator}
+
+\func{static void}{MacRegisterDefaultTypeAndCreator}{\param{const wxString\& }{ext}, \param{wxUint32 }{type}, \param{wxUint32 }{creator}}
+
+On Mac OS, registers application defined extensions and their default type and creator.
+
+\membersection{wxFileName::MacSetDefaultTypeAndCreator}\label{wxfilenamemacsetdefaulttypeandcreator}
+
+\func{bool}{MacSetDefaultTypeAndCreator}{\void}
+
+On Mac OS, looks up the appropriate type and creator from the registration and then sets it.
\membersection{wxFileName::MakeAbsolute}\label{wxfilenamemakeabsolute}
\docparam{flags}{The kind of normalization to do with the file name. It can be
any or-combination of the following constants:
+
\begin{twocollist}
\twocolitem{{\bf wxPATH\_NORM\_ENV\_VARS}}{replace env vars with their values}
-\twocolitem{{\bf wxPATH\_NORM\_DOTS}}{squeeze all .. and . and prepend cwd}
-\twocolitem{{\bf wxPATH\_NORM\_TILDE}}{Unix only: replace ~ and ~user}
-\twocolitem{{\bf wxPATH\_NORM\_CASE}}{if filesystem is case insensitive, transform to tolower case}
-\twocolitem{{\bf wxPATH\_NORM\_ABSOLUTE}}{make the path absolute}
+\twocolitem{{\bf wxPATH\_NORM\_DOTS}}{squeeze all .. and . when possible; if there are too many .. and thus they cannot be all removed, \false will be returned}
+\twocolitem{{\bf wxPATH\_NORM\_CASE}}{if filesystem is case insensitive, transform to lower case}
+\twocolitem{{\bf wxPATH\_NORM\_ABSOLUTE}}{make the path absolute prepending \arg{cwd}}
\twocolitem{{\bf wxPATH\_NORM\_LONG}}{make the path the long form}
\twocolitem{{\bf wxPATH\_NORM\_SHORTCUT}}{resolve if it is a shortcut (Windows only)}
+\twocolitem{{\bf wxPATH\_NORM\_TILDE}}{replace ~ and ~user (Unix only)}
\twocolitem{{\bf wxPATH\_NORM\_ALL}}{all of previous flags except \texttt{wxPATH\_NORM\_CASE}}
\end{twocollist}
-}
+}%
\docparam{cwd}{If not empty, this directory will be used instead of current
-working directory in normalization.}
+working directory in normalization (see wxPATH\_NORM\_ABSOLUTE).}
+
+\docparam{format}{The file name format to use when processing the paths, native by default.}
-\docparam{format}{The file name format, native by default.}
+
+\wxheading{Return value}
+
+\true if normalization was successfully or \false otherwise.
\membersection{wxFileName::PrependDir}\label{wxfilenameprependdir}
\membersection{wxFileName::RemoveDir}\label{wxfilenameremovedir}
-\func{void}{RemoveDir}{\param{int }{pos}}
+\func{void}{RemoveDir}{\param{size\_t }{pos}}
+
+Removes the specified directory component from the path.
+
+\wxheading{See also}
+
+\helpref{GetDirCount}{wxfilenamegetdircount}
+
-Removes a directory name.
+\membersection{wxFileName::RemoveLastDir}\label{wxfilenameremovelastdir}
+
+\func{void}{RemoveLastDir}{\void}
+
+Removes last directory component from the path.
\membersection{wxFileName::Rmdir}\label{wxfilenamermdir}
\func{void}{SetExt}{\param{const wxString\& }{ext}}
-Sets the extension of this file name.
+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
+\helpref{SetEmptyExt}{wxfilenamesetemptyext}.
+
+\wxheading{See also}
+
+\helpref{SetEmptyExt}{wxfilenamesetemptyext}
+\helpref{ClearExt}{wxfilenameclearext}
+
+\membersection{wxFileName::SetEmptyExt}\label{wxfilenamesetemptyext}
+
+\func{void}{SetEmptyExt}{\void}
+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.
+
+\wxheading{See also}
+
+\helpref{SetExt}{wxfilenamesetext}
+\helpref{ClearExt}{wxfilenameclearext}
\membersection{wxFileName::SetFullName}\label{wxfilenamesetfullname}
\func{void}{SetName}{\param{const wxString\& }{name}}
-Sets the name.
+Sets the name part (without extension).
+
+\wxheading{See also}
+
+\helpref{SetFullName}{wxfilenamesetfullname}
\membersection{wxFileName::SetTimes}\label{wxfilenamesettimes}
\membersection{wxFileName::SplitPath}\label{wxfilenamesplitpath}
+\func{static void}{SplitPath}{\param{const wxString\& }{fullpath}, \param{wxString* }{volume}, \param{wxString* }{path}, \param{wxString* }{name}, \param{wxString* }{ext}, \param{bool }{*hasExt = \texttt{NULL}}, \param{wxPathFormat }{format = wxPATH\_NATIVE}}
+
\func{static void}{SplitPath}{\param{const wxString\& }{fullpath}, \param{wxString* }{volume}, \param{wxString* }{path}, \param{wxString* }{name}, \param{wxString* }{ext}, \param{wxPathFormat }{format = wxPATH\_NATIVE}}
\func{static void}{SplitPath}{\param{const wxString\& }{fullpath}, \param{wxString* }{path}, \param{wxString* }{name}, \param{wxString* }{ext}, \param{wxPathFormat }{format = wxPATH\_NATIVE}}
component is. The old contents of the strings pointed to by these parameters
will be overwritten in any case (if the pointers are not {\tt 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
+\arg{hasExt} instead of relying on testing whether \arg{ext} is empty or not.
+
+
+\membersection{wxFileName::SplitVolume}\label{wxfilenamesplitvolume}
+
+\func{static void}{SplitVolume}{\param{const wxString\& }{fullpath}, \param{wxString* }{volume}, \param{wxString* }{path}, \param{wxPathFormat }{format = wxPATH\_NATIVE}}
+
+Splits the given \arg{fullpath} into the volume part (which may be empty) and
+the pure path part, not containing any volume.
+
+\wxheading{See also}
+
+\helpref{SplitPath}{wxfilenamesplitpath}
+
\membersection{wxFileName::Touch}\label{wxfilenametouch}
projects / wxWidgets.git / blobdiff