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106 lines
3.5 KiB
C++
106 lines
3.5 KiB
C++
// Filename: virtualFileSystem.h
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// Created by: drose (03Aug02)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) 2001, Disney Enterprises, Inc. All rights reserved
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//
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// All use of this software is subject to the terms of the Panda 3d
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// Software license. You should have received a copy of this license
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// along with this source code; you will also find a current copy of
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// the license at http://www.panda3d.org/license.txt .
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//
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// To contact the maintainers of this program write to
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// panda3d@yahoogroups.com .
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//
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////////////////////////////////////////////////////////////////////
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#ifndef VIRTUALFILESYSTEM_H
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#define VIRTUALFILESYSTEM_H
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#include "pandabase.h"
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#include "virtualFile.h"
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#include "filename.h"
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#include "pointerTo.h"
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#include "pmap.h"
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#include "config_express.h"
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class Multifile;
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class VirtualFileMount;
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class VirtualFileComposite;
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////////////////////////////////////////////////////////////////////
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// Class : VirtualFileSystem
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// Description : A hierarchy of directories and files that appears to
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// be one continuous file system, even though the files
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// may originate from several different sources that may
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// not be related to the actual OS's file system.
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//
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// For instance, a VirtualFileSystem can transparently
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// mount one or more Multifiles as their own
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// subdirectory hierarchies.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDAEXPRESS VirtualFileSystem {
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PUBLISHED:
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VirtualFileSystem();
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~VirtualFileSystem();
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enum MountFlags {
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MF_owns_pointer = 0x0001,
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MF_read_only = 0x0002,
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};
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bool mount(Multifile *multifile, const string &mount_point, int flags);
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bool mount(const Filename &physical_filename, const string &mount_point, int flags);
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int unmount(Multifile *multifile);
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int unmount(const Filename &physical_filename);
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int unmount_point(const string &mount_point);
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int unmount_all();
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bool chdir(const string &new_directory);
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const Filename &get_cwd() const;
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PT(VirtualFile) get_file(const Filename &filename) const;
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PT(VirtualFile) find_file(const Filename &filename,
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const DSearchPath &searchpath) const;
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bool resolve_filename(Filename &filename,
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const DSearchPath &searchpath,
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const string &default_extension = string()) const;
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INLINE bool exists(const Filename &filename) const;
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INLINE bool is_directory(const Filename &filename) const;
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INLINE bool is_regular_file(const Filename &filename) const;
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INLINE void ls(const string &filename) const;
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INLINE void ls_all(const string &filename) const;
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void write(ostream &out) const;
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static VirtualFileSystem *get_global_ptr();
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INLINE string read_file(const Filename &filename) const;
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INLINE istream *open_read_file(const Filename &filename) const;
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public:
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INLINE bool read_file(const Filename &filename, string &result) const;
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void scan_mount_points(vector_string &names, const Filename &path) const;
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private:
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Filename normalize_mount_point(const string &mount_point) const;
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bool found_match(PT(VirtualFile) &found_file, VirtualFileComposite *&composite_file,
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VirtualFileMount *mount, const string &local_filename) const;
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typedef pvector<VirtualFileMount *> Mounts;
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Mounts _mounts;
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Filename _cwd;
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static VirtualFileSystem *_global_ptr;
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};
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#include "virtualFileSystem.I"
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#endif
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