24528b0c14
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6317 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
230 lines
8.3 KiB
C++
230 lines
8.3 KiB
C++
/////////////////////////////////////////////////////////////////////////////
|
|
// Name: filesys.h
|
|
// Purpose: class for opening files - virtual file system
|
|
// Author: Vaclav Slavik
|
|
// Copyright: (c) 1999 Vaclav Slavik
|
|
// RCS-ID: $Id$
|
|
// Licence: wxWindows Licence
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef __FILESYS_H__
|
|
#define __FILESYS_H__
|
|
|
|
#ifdef __GNUG__
|
|
#pragma interface
|
|
#endif
|
|
|
|
#include "wx/setup.h"
|
|
|
|
#if !wxUSE_STREAMS
|
|
#error You cannot compile virtual file systems without wxUSE_STREAMS
|
|
#endif
|
|
|
|
#if wxUSE_HTML && !wxUSE_FILESYSTEM
|
|
#error You cannot compile wxHTML without virtual file systems
|
|
#endif
|
|
|
|
#if wxUSE_FILESYSTEM
|
|
|
|
#include "wx/stream.h"
|
|
#include "wx/url.h"
|
|
#include "wx/datetime.h"
|
|
|
|
class wxFSFile;
|
|
class wxFileSystemHandler;
|
|
class wxFileSystem;
|
|
|
|
//--------------------------------------------------------------------------------
|
|
// wxFSFile
|
|
// This class is a file opened using wxFileSystem. It consists of
|
|
// input stream, location, mime type & optional anchor
|
|
// (in 'index.htm#chapter2', 'chapter2' is anchor)
|
|
//--------------------------------------------------------------------------------
|
|
|
|
class WXDLLEXPORT wxFSFile : public wxObject
|
|
{
|
|
private:
|
|
wxInputStream *m_Stream;
|
|
wxString m_Location;
|
|
wxString m_MimeType;
|
|
wxString m_Anchor;
|
|
wxDateTime m_Modif;
|
|
|
|
public:
|
|
wxFSFile(wxInputStream *stream, const wxString& loc,
|
|
const wxString& mimetype, const wxString& anchor,
|
|
wxDateTime modif)
|
|
{
|
|
m_Stream = stream;
|
|
m_Location = loc;
|
|
m_MimeType = mimetype; m_MimeType.MakeLower();
|
|
m_Anchor = anchor;
|
|
m_Modif = modif;
|
|
}
|
|
virtual ~wxFSFile()
|
|
{
|
|
if (m_Stream) delete m_Stream;
|
|
}
|
|
|
|
wxInputStream *GetStream() const {return m_Stream;}
|
|
// returns stream. This doesn't _create_ stream, it only returns
|
|
// pointer to it!!
|
|
|
|
const wxString& GetMimeType() const {return m_MimeType;}
|
|
// returns file's mime type
|
|
|
|
const wxString& GetLocation() const {return m_Location;}
|
|
// returns the original location (aka filename) of the file
|
|
|
|
const wxString& GetAnchor() const {return m_Anchor;}
|
|
|
|
wxDateTime GetModificationTime() const {return m_Modif;}
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
//--------------------------------------------------------------------------------
|
|
// wxFileSystemHandler
|
|
// This class is FS handler for wxFileSystem. It provides
|
|
// interface to access certain
|
|
// kinds of files (HTPP, FTP, local, tar.gz etc..)
|
|
//--------------------------------------------------------------------------------
|
|
|
|
class WXDLLEXPORT wxFileSystemHandler : public wxObject
|
|
{
|
|
DECLARE_ABSTRACT_CLASS(wxFileSystemHandler)
|
|
|
|
public:
|
|
wxFileSystemHandler() : wxObject() {}
|
|
|
|
virtual bool CanOpen(const wxString& location) = 0;
|
|
// returns TRUE if this handler is able to open given location
|
|
|
|
virtual wxFSFile* OpenFile(wxFileSystem& fs, const wxString& location) = 0;
|
|
// opens given file and returns pointer to input stream.
|
|
// Returns NULL if opening failed.
|
|
// The location is always absolute path.
|
|
|
|
virtual wxString FindFirst(const wxString& spec, int flags = 0);
|
|
virtual wxString FindNext();
|
|
// Finds first/next file that matches spec wildcard. flags can be wxDIR for restricting
|
|
// the query to directories or wxFILE for files only or 0 for either.
|
|
// Returns filename or empty string if no more matching file exists
|
|
|
|
protected:
|
|
wxString GetProtocol(const wxString& location) const;
|
|
// returns protocol ("file", "http", "tar" etc.) The last (most right)
|
|
// protocol is used:
|
|
// {it returns "tar" for "file:subdir/archive.tar.gz#tar:/README.txt"}
|
|
|
|
wxString GetLeftLocation(const wxString& location) const;
|
|
// returns left part of address:
|
|
// {it returns "file:subdir/archive.tar.gz" for "file:subdir/archive.tar.gz#tar:/README.txt"}
|
|
|
|
wxString GetAnchor(const wxString& location) const;
|
|
// returns anchor part of address:
|
|
// {it returns "anchor" for "file:subdir/archive.tar.gz#tar:/README.txt#anchor"}
|
|
// NOTE: anchor is NOT a part of GetLeftLocation()'s return value
|
|
|
|
wxString GetRightLocation(const wxString& location) const;
|
|
// returns right part of address:
|
|
// {it returns "/README.txt" for "file:subdir/archive.tar.gz#tar:/README.txt"}
|
|
|
|
wxString GetMimeTypeFromExt(const wxString& location);
|
|
// Returns MIME type of the file - w/o need to open it
|
|
// (default behaviour is that it returns type based on extension)
|
|
};
|
|
|
|
|
|
|
|
|
|
//--------------------------------------------------------------------------------
|
|
// wxFileSystem
|
|
// This class provides simple interface for opening various
|
|
// kinds of files (HTPP, FTP, local, tar.gz etc..)
|
|
//--------------------------------------------------------------------------------
|
|
|
|
class WXDLLEXPORT wxFileSystem : public wxObject
|
|
{
|
|
DECLARE_DYNAMIC_CLASS(wxFileSystem)
|
|
|
|
public:
|
|
wxFileSystem() : wxObject() {m_Path = m_LastName = wxEmptyString; m_Handlers.DeleteContents(TRUE); m_FindFileHandler = NULL;}
|
|
|
|
void ChangePathTo(const wxString& location, bool is_dir = FALSE);
|
|
// sets the current location. Every call to OpenFile is
|
|
// relative to this location.
|
|
// NOTE !!
|
|
// unless is_dir = TRUE 'location' is *not* the directory but
|
|
// file contained in this directory
|
|
// (so ChangePathTo("dir/subdir/xh.htm") sets m_Path to "dir/subdir/")
|
|
|
|
wxString GetPath() const {return m_Path;}
|
|
|
|
wxFSFile* OpenFile(const wxString& location);
|
|
// opens given file and returns pointer to input stream.
|
|
// Returns NULL if opening failed.
|
|
// It first tries to open the file in relative scope
|
|
// (based on ChangePathTo()'s value) and then as an absolute
|
|
// path.
|
|
|
|
wxString FindFirst(const wxString& spec, int flags = 0);
|
|
wxString FindNext();
|
|
// Finds first/next file that matches spec wildcard. flags can be wxDIR for restricting
|
|
// the query to directories or wxFILE for files only or 0 for either.
|
|
// Returns filename or empty string if no more matching file exists
|
|
|
|
|
|
static void AddHandler(wxFileSystemHandler *handler);
|
|
// Adds FS handler.
|
|
// In fact, this class is only front-end to the FS hanlers :-)
|
|
|
|
static void CleanUpHandlers();
|
|
// remove all items from the m_Handlers list
|
|
|
|
private:
|
|
wxString m_Path;
|
|
// the path (location) we are currently in
|
|
// this is path, not file!
|
|
// (so if you opened test/demo.htm, it is
|
|
// "test/", not "test/demo.htm")
|
|
wxString m_LastName;
|
|
// name of last opened file (full path)
|
|
static wxList m_Handlers;
|
|
// list of FS handlers
|
|
wxFileSystemHandler *m_FindFileHandler;
|
|
// handler that succeed in FindFirst query
|
|
};
|
|
|
|
|
|
/*
|
|
|
|
'location' syntax:
|
|
|
|
To determine FS type, we're using standard KDE notation:
|
|
file:/absolute/path/file.htm
|
|
file:relative_path/xxxxx.html
|
|
/some/path/x.file ('file:' is default)
|
|
http://www.gnome.org
|
|
file:subdir/archive.tar.gz#tar:/README.txt
|
|
|
|
special characters :
|
|
':' - FS identificator is before this char
|
|
'#' - separator. It can be either HTML anchor ("index.html#news")
|
|
(in case there is no ':' in the string to the right from it)
|
|
or FS separator
|
|
(example : http://www.wxhtml.org/wxhtml-0.1.tar.gz#tar:/include/wxhtml/filesys.h"
|
|
this would access tgz archive stored on web)
|
|
'/' - directory (path) separator. It is used to determine upper-level path.
|
|
HEY! Don't use \ even if you're on Windows!
|
|
|
|
*/
|
|
|
|
#endif
|
|
// wxUSE_FILESYSTEM
|
|
|
|
#endif
|
|
// __FILESYS_H__
|