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/*
dbx_tree: tree database driver for Miranda IM
Copyright 2007-2010 Michael "Protogenes" Kunz,
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "DatabaseLink.h"
#ifndef _MSC_VER
#include "savestrings_gcc.h"
#endif
/*
profile: pointer to a string which contains full path + name
Affect: The database plugin should create the profile, the filepath will not exist at
the time of this call, profile will be C:\..\<name>.dat
Note: Do not prompt the user in anyway about this operation.
Note: Do not initialise internal data structures at this point!
Returns: 0 on success, non zero on failure - error contains extended error information, see EMKPRF_*
*/
static int makeDatabase(const TCHAR *profile, int* error)
{
if (gDataBase) delete gDataBase;
gDataBase = new CDataBase(profile);
*error = gDataBase->CreateDB();
return *error;
}
/*
profile: [in] a null terminated string to file path of selected profile
error: [in/out] pointer to an int to set with error if any
Affect: Ask the database plugin if it supports the given profile, if it does it will
return 0, if it doesnt return 1, with the error set in error -- EGROKPRF_* can be valid error
condition, most common error would be [EGROKPRF_UNKHEADER]
Note: Just because 1 is returned, doesnt mean the profile is not supported, the profile might be damaged
etc.
Returns: 0 on success, non zero on failure
*/
static int grokHeader(const TCHAR *profile, int* error)
{
if (gDataBase) delete gDataBase;
gDataBase = new CDataBase(profile);
*error = gDataBase->CheckDB();
return *error;
}
/*
Affect: Tell the database to create all services/hooks that a 3.xx legecy database might support into link,
which is a PLUGINLINK structure
Returns: 0 on success, nonzero on failure
*/
static MIDatabase* LoadDatabase(const TCHAR *profile)
{
if (gDataBase) delete gDataBase;
gDataBase = new CDataBase(profile);
gDataBase->OpenDB();
return gDataBase;
}
/*
Affect: The database plugin should shutdown, unloading things from the core and freeing internal structures
Returns: 0 on success, nonzero on failure
Note: Unload() might be called even if Load(void) was never called, wasLoaded is set to 1 if Load(void) was ever called.
*/
static int UnloadDatabase(MIDatabase* db)
{
if (gDataBase)
delete gDataBase;
gDataBase = NULL;
return 0;
}
DATABASELINK gDBLink = {
sizeof(DATABASELINK),
gInternalName,
_T(gInternalNameLong),
makeDatabase,
grokHeader,
LoadDatabase,
UnloadDatabase,
NULL // does not support file checking
};
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