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wxFSFile

This class represents a single file opened by wxFileSystem. It provides more information than wxWindow's input stream (stream, filename, mime type, anchor).

Note: Any pointer returned by wxFSFile's member is valid only as long as wxFSFile object exits. For example call to GetStream() doesn't create the stream but only returns the pointer to it. In other words after 10 calls to GetStream() you'll obtain ten identical pointers.

Derived from

wxObject

See Also

wxFileSystemHandler, wxFileSystem, Overview

Members

wxFSFile::wxFSFile
wxFSFile::GetAnchor
wxFSFile::GetLocation
wxFSFile::GetMimeType
wxFSFile::GetModificationTime
wxFSFile::GetStream


wxFSFile::wxFSFile

wxFSFile(wxInputStream *stream, const wxString& loc, const wxString& mimetype, const wxString& anchor)

Constructor. You probably won't use it. See Notes for details.

Parameters

stream

location

mimetype

anchor

If you aren't sure what do these params mean see description of GetXXXX() functions.

Notes

It is never used by end user but you'll need it if you're writing own virtual FS. For example you may need something similar to wxMemoryInputStream but because wxMemoryInputStream doesn't free the memory when destroyed and thus passing memory stream pointer into wxFSFile constructor would lead to memory leaks, you can write your own class derived from wxFSFile :

class wxMyFSFile : public wxFSFile
{
    private:
        void *m_Mem;
    public:
        wxMyFSFile(.....)
	~wxMyFSFile() {free(m_Mem);}
	    // of course dtor is virtual ;-)
};

wxFSFile::GetAnchor

const wxString& GetAnchor() const

Returns anchor (if present). The term of anchor can be easily explained using few examples:

index.htm#anchor                      /* 'anchor' is anchor */
index/wx001.htm                       /* NO anchor here!    */
archive/main.zip#zip:index.htm#global /* 'global'           */
archive/main.zip#zip:index.htm        /* NO anchor here!    */
Usually anchor is presented only if mime type is 'text/html'. But it may have some meaning with other files (for example myanim.avi#200 may refer to position in animation or reality.wrl#MyView may refer to predefined view in VRML)


wxFSFile::GetLocation

const wxString& GetLocation() const

Returns full location of the file, including path and protocol. Examples :

http://www.wxwindows.org
http://www.ms.mff.cuni.cz/~vsla8348/wxhtml/archive.zip#zip:info.txt
file:/home/vasek/index.htm
relative-file.htm

wxFSFile::GetMimeType

const wxString& GetMimeType() const

Returns MIME type of the content of this file. It is either extension-based (see wxMimeTypesManager) or extracted from HTTP protocol Content-Type header.


wxFSFile::GetModificationTime

wxDateTime GetModificationTime() const

Returns time when this file was modified.


wxFSFile::GetStream

wxInputStream* GetStream() const

Returns pointer to the stream. You can use the returned stream to directly access data. You may suppose that the stream provide Seek and GetSize functionality (even in case of HTTP protocol which doesn't provide this by default. wxHtml is using local cache to workaround this and to speed up connection)