X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ba7fe276d4606f96352a468dbad872aa48932d8c..066f3611df971be93b2ec46b82c2f05f3ff9a422:/docs/latex/wx/filesys.tex?ds=sidebyside diff --git a/docs/latex/wx/filesys.tex b/docs/latex/wx/filesys.tex index 10a5c6e082..cc590f5d52 100644 --- a/docs/latex/wx/filesys.tex +++ b/docs/latex/wx/filesys.tex @@ -18,6 +18,10 @@ provide access to user-defined virtual file systems. +\wxheading{Library} + +\helpref{wxBase}{librarieslist} + \wxheading{See Also} \helpref{wxFileSystemHandler}{wxfilesystemhandler}, @@ -26,18 +30,22 @@ provide access to user-defined virtual file systems. \latexignore{\rtfignore{\wxheading{Members}}} + \membersection{wxFileSystem::wxFileSystem}\label{wxfilesystemwxfilesystem} \func{}{wxFileSystem}{\void} Constructor. + \membersection{wxFileSystem::AddHandler}\label{wxfilesystemaddhandler} \func{static void}{AddHandler}{\param{wxFileSystemHandler }{*handler}} -This static function adds new handler into the list of handlers. -The \helpref{handlers}{wxfilesystemhandler} provide access to virtual FS. +This static function adds new handler into the list of +\helpref{handlers}{wxfilesystemhandler} which provide access to virtual FS. +Note that if two handlers for the same protocol are added, the last one added +takes precedence. \wxheading{Note} @@ -51,44 +59,55 @@ This is because (a) AddHandler is a static method, and (b) the handlers are deleted in wxFileSystem's destructor so that you don't have to care about it. + +\membersection{wxFileSystem::HasHandlerForPath}\label{wxfilesystemhashandlerforpath} + +\func{static bool}{HasHandlerForPath}{\param{const wxString \&}{ location}} + +This static function returns \true if there is a registered handler which can open the given +location. + + \membersection{wxFileSystem::ChangePathTo}\label{wxfilesystemchangepathto} -\func{void}{ChangePathTo}{\param{const wxString\& }{location}, \param{bool }{is\_dir = FALSE}} +\func{void}{ChangePathTo}{\param{const wxString\& }{location}, \param{bool }{is\_dir = false}} Sets the current location. {\it location} parameter passed to \helpref{OpenFile}{wxfilesystemopenfile} is relative to this path. -{\bf Caution! } Unless {\it is\_dir} is TRUE the {\it location} parameter +{\bf Caution! } Unless {\it is\_dir} is true the {\it location} parameter is not the directory name but the name of the file in this directory. All these commands change the path to "dir/subdir/": \begin{verbatim} ChangePathTo("dir/subdir/xh.htm"); - ChangePathTo("dir/subdir", TRUE); -C hangePathTo("dir/subdir/", TRUE); + ChangePathTo("dir/subdir", true); + ChangePathTo("dir/subdir/", true); \end{verbatim} \wxheading{Parameters} \docparam{location}{the new location. Its meaning depends on the value of {\it is\_dir}} -\docparam{is\_dir}{if TRUE {\it location} is new directory. If FALSE (default) +\docparam{is\_dir}{if true {\it location} is new directory. If false (default) {\it location} is {\bf file in} the new directory.} \wxheading{Example} \begin{verbatim} f = fs -> OpenFile("hello.htm"); // opens file 'hello.htm' - fs -> ChangePathTo("subdir/folder", TRUE); + fs -> ChangePathTo("subdir/folder", true); f = fs -> OpenFile("hello.htm"); // opens file 'subdir/folder/hello.htm' !! \end{verbatim} + \membersection{wxFileSystem::GetPath}\label{wxfilesystemgetpath} \func{wxString}{GetPath}{\void} Returns actual path (set by \helpref{ChangePathTo}{wxfilesystemchangepathto}). + \membersection{wxFileSystem::FileNameToURL}\label{wxfilesystemfilenametourl} \func{static wxString}{FileNameToURL}{\param{wxFileName }{filename}} @@ -100,6 +119,26 @@ Converts filename into URL. \helpref{wxFileSystem::URLToFileName}{wxfilesystemurltofilename}, \helpref{wxFileName}{wxfilename} + +\membersection{wxFileSystem::FindFileInPath}\label{wxfilesystemfindfileinpath} + +\func{bool}{FindFileInPath}{\param{wxString }{*str}, \param{const wxString\& }{path}, \param{const wxString\& }{file}} + +Looks for the file with the given name \arg{file} in a colon or semi-colon +(depending on the current platform) separated list of directories in +\arg{path}. If the file is found in any directory, returns \true and the full +path of the file in \arg{str}, otherwise returns \false and doesn't modify +\arg{str}. + +\wxheading{Parameters} + +\docparam{str}{Receives the full path of the file, must not be \NULL} + +\docparam{path}{\texttt{wxPATH\_SEP}-separated list of directories} + +\docparam{file}{the name of the file to look for} + + \membersection{wxFileSystem::FindFirst}\label{wxfilesystemfindfirst} \func{wxString}{FindFirst}{\param{const wxString\& }{wildcard}, \param{int }{flags = 0}} @@ -108,24 +147,44 @@ Works like \helpref{wxFindFirstFile}{wxfindfirstfile}. Returns name of the first filename (within filesystem's current path) that matches {\it wildcard}. {\it flags} may be one of wxFILE (only files), wxDIR (only directories) or 0 (both). + \membersection{wxFileSystem::FindNext}\label{wxfilesystemfindnext} \func{wxString}{FindNext}{\void} Returns the next filename that matches parameters passed to \helpref{FindFirst}{wxfilesystemfindfirst}. + \membersection{wxFileSystem::OpenFile}\label{wxfilesystemopenfile} -\func{wxFSFile*}{OpenFile}{\param{const wxString\& }{location}} +\func{wxFSFile*}{OpenFile}{\param{const wxString\& }{location}, \param{int }{flags = wxFS\_READ}} Opens the file and returns a pointer to a \helpref{wxFSFile}{wxfsfile} object or NULL if failed. It first tries to open the file in relative scope (based on value passed to ChangePathTo() method) and then as an -absolute path. +absolute path. Note that the user is responsible for deleting the returned +wxFSFile. + +{\it flags} can be one or more of the following bit values ored together: + +\begin{verbatim} +// Open Bit Flags +enum { + wxFS_READ = 1, // Open for reading + wxFS_SEEKABLE = 4 // Returned stream will be seekable +}; +\end{verbatim} + +A stream opened with just the default {\it wxFS\_READ} flag may +or may not be seekable depending on the underlying source. +Passing {\it wxFS\_READ | wxFS\_SEEKABLE} for {\it flags} will +back a stream that is not natively seekable with memory or a file +and return a stream that is always seekable. + \membersection{wxFileSystem::URLToFileName}\label{wxfilesystemurltofilename} -\func{static wxFileName}{URLToFileName}{\param{const wxString& }{url}} +\func{static wxFileName}{URLToFileName}{\param{const wxString\& }{url}} Converts URL into a well-formed filename. The URL must use the {\tt file} protocol.