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3% filesystem.tex at 21/Mar/99 23:00:52
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6\section{\class{wxFileSystem}}\label{wxfilesystem}
7
8This class provides an interface for opening files on different
9file systems. It can handle absolute and/or local filenames.
10It uses a system of \helpref{handlers}{wxfilesystemhandler} to
11provide access to user-defined virtual file systems.
12
13\wxheading{Derived from}
14
15\helpref{wxObject}{wxobject}
16
17\wxheading{Include files}
18
19<wx/filesys.h>
20
21\wxheading{See Also}
22
23\helpref{wxFileSystemHandler}{wxfilesystemhandler},
24\helpref{wxFSFile}{wxfsfile},
25\helpref{Overview}{fs}
26
27\latexignore{\rtfignore{\wxheading{Members}}}
28
29\membersection{wxFileSystem::wxFileSystem}\label{wxfilesystemwxfilesystem}
30
31\func{}{wxFileSystem}{\void}
32
33Constructor.
34
35\membersection{wxFileSystem::AddHandler}\label{wxfilesystemaddhandler}
36
37\func{static void}{AddHandler}{\param{wxFileSystemHandler }{*handler}}
38
39This static function adds new handler into the list of handlers.
40The \helpref{handlers}{wxfilesystemhandler} provide access to virtual FS.
41
42\wxheading{Note}
43
44You can call:
45
46\begin{verbatim}
47wxFileSystem::AddHandler(new My_FS_Handler);
48\end{verbatim}
49
50This is because (a) AddHandler is a static method, and (b) the handlers
51are deleted in wxFileSystem's destructor so that you don't have to
52care about it.
53
54\membersection{wxFileSystem::ChangePathTo}\label{wxfilesystemchangepathto}
55
56\func{void}{ChangePathTo}{\param{const wxString\& }{location}, \param{bool }{is\_dir = false}}
57
58Sets the current location. {\it location} parameter passed to
59\helpref{OpenFile}{wxfilesystemopenfile} is relative to this path.
60
61{\bf Caution! } Unless {\it is\_dir} is true the {\it location} parameter
62is not the directory name but the name of the file in this directory. All these
63commands change the path to "dir/subdir/":
64
65\begin{verbatim}
66 ChangePathTo("dir/subdir/xh.htm");
67 ChangePathTo("dir/subdir", true);
68C hangePathTo("dir/subdir/", true);
69\end{verbatim}
70
71\wxheading{Parameters}
72
73\docparam{location}{the new location. Its meaning depends on the value of {\it is\_dir}}
74
75\docparam{is\_dir}{if true {\it location} is new directory. If false (default)
76{\it location} is {\bf file in} the new directory.}
77
78\wxheading{Example}
79
80\begin{verbatim}
81 f = fs -> OpenFile("hello.htm"); // opens file 'hello.htm'
82 fs -> ChangePathTo("subdir/folder", true);
83 f = fs -> OpenFile("hello.htm"); // opens file 'subdir/folder/hello.htm' !!
84\end{verbatim}
85
86\membersection{wxFileSystem::GetPath}\label{wxfilesystemgetpath}
87
88\func{wxString}{GetPath}{\void}
89
90Returns actual path (set by \helpref{ChangePathTo}{wxfilesystemchangepathto}).
91
92\membersection{wxFileSystem::FileNameToURL}\label{wxfilesystemfilenametourl}
93
94\func{static wxString}{FileNameToURL}{\param{wxFileName }{filename}}
95
96Converts filename into URL.
97
98\wxheading{See also}
99
100\helpref{wxFileSystem::URLToFileName}{wxfilesystemurltofilename},
101\helpref{wxFileName}{wxfilename}
102
103\membersection{wxFileSystem::FindFirst}\label{wxfilesystemfindfirst}
104
105\func{wxString}{FindFirst}{\param{const wxString\& }{wildcard}, \param{int }{flags = 0}}
106
107Works like \helpref{wxFindFirstFile}{wxfindfirstfile}. Returns name of the first
108filename (within filesystem's current path) that matches {\it wildcard}. {\it flags} may be one of
109wxFILE (only files), wxDIR (only directories) or 0 (both).
110
111\membersection{wxFileSystem::FindNext}\label{wxfilesystemfindnext}
112
113\func{wxString}{FindNext}{\void}
114
115Returns the next filename that matches parameters passed to \helpref{FindFirst}{wxfilesystemfindfirst}.
116
117\membersection{wxFileSystem::OpenFile}\label{wxfilesystemopenfile}
118
119\func{wxFSFile*}{OpenFile}{\param{const wxString\& }{location}}
120
121Opens the file and returns a pointer to a \helpref{wxFSFile}{wxfsfile} object
122or NULL if failed. It first tries to open the file in relative scope
123(based on value passed to ChangePathTo() method) and then as an
124absolute path.
125
126\membersection{wxFileSystem::URLToFileName}\label{wxfilesystemurltofilename}
127
128\func{static wxFileName}{URLToFileName}{\param{const wxString\& }{url}}
129
130Converts URL into a well-formed filename. The URL must use the {\tt file}
131protocol.
132
133\wxheading{See also}
134
135\helpref{wxFileSystem::FileNameToURL}{wxfilesystemfilenametourl},
136\helpref{wxFileName}{wxfilename}
137