vfs.h

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/*
 *      HT Editor
 *      vfs.h
 *
 *      Copyright (C) 1999-2002 Stefan Weyergraf (stefan@weyergraf.de)
 *
 *      This program is free software; you can redistribute it and/or modify
 *      it under the terms of the GNU General Public License version 2 as
 *      published by the Free Software Foundation.
 *
 *      This program is distributed in the hope that it will be useful,
 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *      GNU General Public License for more details.
 *
 *      You should have received a copy of the GNU General Public License
 *      along with this program; if not, write to the Free Software
 *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef __VFS_H__
#define __VFS_H__

#include "htobj.h"
#include "htreg.h"
#include "stream.h"

#define VFS_DIR_MAX      256
#define VFS_PROTO_MAX   16
#define VFS_URL_MAX             (VFS_DIR_MAX+VFS_PROTO_MAX+1)

/*
 *      class RegNodeFile
 */

class RegNodeFile: public ht_mem_file {
protected:
        char *nodename;
        UINT access_mode0;
        UINT open_mode;

/* overwritten */
                   int          load_node(ht_object_stream *s, ht_registry_node_type *type, ht_registry_data **data);
                   void         store_node(ht_object_stream *s, ht_registry_node_type type, ht_registry_data *data);
public:
                   void         init(const char *nodename, UINT am, UINT om);
        virtual void            done();
/* overwritten */
        virtual bool            set_access_mode(UINT access_mode);
};

/*
 *   class Vfs
 */

#define VFSCAP_WRITABLE         1

class Vfs: public Object {
public:
/* new */
        virtual int                     canonicalize(char *result, const char *filename, const char *cwd) = 0;
        virtual int                     createFile(const char *filename, UINT createtype) = 0;
        virtual int                     deleteFile(const char *filename) = 0;
        virtual void *          enumFiletype(UINT *type, char **name, void *handle) = 0;
        virtual int                     compareFilenames(const char *a, const char *b) = 0;
        virtual bool                    findFirst(const char *dirname, pfind_t *f) = 0;
        virtual bool                    findNext(pfind_t *f) = 0;
        virtual bool                    findClose(pfind_t *f) = 0;
        virtual int                     getCaps() = 0;
        virtual const char *    getProtoName() = 0;
        virtual is_path_delim   isPathDelim() = 0;
        virtual int                     makeDir(const char *dirname) = 0;
        virtual int                     open(const char *filename, bool edit) = 0;
        virtual int                     pstat(pstat_t *s, const char *filename) = 0;
        virtual int                     renameFile(const char *filename, const char *newname) = 0;
        virtual int                     fileClose(ht_streamfile *f) = 0;
        virtual int                     fileOpen(const char *filename, UINT access_mode, UINT open_mode, ht_streamfile **f) = 0;
};

/*
 *      class LocalFs
 */

class LocalFs: public Vfs {
public:
                        void            init();
        virtual void            done();
/* overwritten */
        virtual int                     canonicalize(char *result, const char *filename, const char *cwd);
        virtual int                     compareFilenames(const char *a, const char *b);
        virtual int                     createFile(const char *filename, UINT createtype);
        virtual int                     deleteFile(const char *filename);
        virtual void *          enumFiletype(UINT *type, char **name, void *handle);
        virtual bool                    findFirst(const char *dirname, pfind_t *f);
        virtual bool                    findNext(pfind_t *f);
        virtual bool                    findClose(pfind_t *f);
        virtual int                     getCaps();
        virtual const char *    getProtoName();
        virtual is_path_delim   isPathDelim();
        virtual int                     makeDir(const char *dirname);
        virtual int                     open(const char *filename, bool edit);
        virtual int                     pstat(pstat_t *s, const char *filename);
        virtual int                     renameFile(const char *filename, const char *newname);
        virtual int                     fileClose(ht_streamfile *f);
        virtual int                     fileOpen(const char *filename, UINT access_mode, UINT open_mode, ht_streamfile **f);
};

/*
 *      class RegistryFs
 */

class RegistryFs: public Vfs {
protected:
        char *enum_last;
        char *enum_dir;

/* new */
                        void            create_pfind_t(pfind_t *f, const char *key, ht_registry_data *data, ht_registry_node_type type);
                        void            create_pstat_t(pstat_t *s, ht_registry_data *data, ht_registry_node_type type);
public:
                        void            init();
        virtual void            done();
/* overwritten */
        virtual int                     canonicalize(char *result, const char *filename, const char *cwd);
        virtual int                     createFile(const char *filename, UINT createtype);
        virtual int                     deleteFile(const char *filename);
        virtual void *          enumFiletype(UINT *type, char **name, void *handle);
        virtual int                     compareFilenames(const char *a, const char *b);
        virtual bool                    findFirst(const char *dirname, pfind_t *f);
        virtual bool                    findNext(pfind_t *f);
        virtual bool                    findClose(pfind_t *f);
        virtual int                     getCaps();
        virtual const char *    getProtoName();
        virtual is_path_delim   isPathDelim();
        virtual int                     makeDir(const char *dirname);
        virtual int                     open(const char *filename, bool edit);
        virtual int                     pstat(pstat_t *s, const char *filename);
        virtual int                     renameFile(const char *filename, const char *newname);
        virtual int                     fileClose(ht_streamfile *f);
        virtual int                     fileOpen(const char *filename, UINT access_mode, UINT open_mode, ht_streamfile **f);
};

#endif /* __VFS_H__ */

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