Use const

[wxWidgets.git] / docs / latex / wx / filesys.tex

diff --git a/docs/latex/wx/filesys.tex b/docs/latex/wx/filesys.tex
index d01ce1ee962d3487f2eafdb56ec9ac8c84e9aac7..cc590f5d5264b8e04972920652b63834752fe784 100644 (file)
--- a/docs/latex/wx/filesys.tex
+++ b/docs/latex/wx/filesys.tex
@@ -18,6 +18,10 @@ provide access to user-defined virtual file systems.
 
 <wx/filesys.h>
 
+\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}
 
@@ -51,6 +59,15 @@ 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}}
@@ -65,7 +82,7 @@ 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);
 \end{verbatim}
 
 \wxheading{Parameters}
@@ -83,12 +100,14 @@ C  hangePathTo("dir/subdir/", 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}}
@@ -108,20 +147,40 @@ 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}