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{
Miranda NG: the free IM client for Microsoft* Windows*
Copyright 2012 Miranda NG project,
all portions of this codebase are copyrighted to the people
listed in contributors.txt.
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.
}
{$IFNDEF M_DB_INT}
{$DEFINE M_DB_INT}
///////////////////////////////////////////////////////////////////////////////
// basic database interface
type
TDBCachedGlobalValue = record
name : PAnsiChar;
value:TDBVARIANT;
end;
type
PDBCachedContactValue = ^TDBCachedContactValue;
TDBCachedContactValue = record
name:PAnsiChar;
value:TDBVARIANT;
next: PDBCachedContactValue;
end;
PDBCachedContact = ^TDBCachedContact;
TDBCachedContact = record
contactID:TMCONTACT;
szProto:PAnsiChar;
first :PDBCachedContactValue;
last :PDBCachedContactValue;
// metacontacts
nSubs:int; // == -1 -> not a metacontact
pSubs:PMCONTACT;
parentID:TMCONTACT; // == 0 -> not a subcontact
nDefault:int // default sub number
end;
PMIDatabaseCache = ^MIDatabaseCache;
MIDatabaseCache = interface
function AddContactToCache(contactID:TMCONTACT):PDBCachedContact; stdcall;
function GetCachedContact(contactID:TMCONTACT):PDBCachedContact; stdcall;
function GetFirstContact():PDBCachedContact; stdcall;
function GetNextContact(contactID:TMCONTACT):PDBCachedContact; stdcall;
procedure FreeCachedContact(contactID:TMCONTACT); stdcall;
function InsertCachedSetting(szName:PAnsiChar; param:int):PAnsiChar; stdcall;
function GetCachedSetting(szModuleName:PAnsiChar; szSettingName:PAnsiChar; param1:int; param2:int):PAnsiChar; stdcall;
procedure SetCachedVariant(s:PDBVARIANT; d:PDBVARIANT); stdcall;
function GetCachedValuePtr(contactID:TMCONTACT; szSetting:PAnsiChar; bAllocate:int):PDBVARIANT; stdcall;
end;
type
PMIDatabase = ^TMIDatabase;
TMIDatabase = record
m_cache: PMIDatabaseCache;
SetCacheSafetyMode:procedure(val:bool); stdcall;
GetContactCount:function():long; stdcall;
FindFirstContact:function(const szProto:PAnsiChar = NIL):TMCONTACT; stdcall;
FindNextContact:function(contactID:TMCONTACT; const szProto:PAnsiChar = NIL):TMCONTACT; stdcall;
DeleteContact:function(contactID:TMCONTACT):long; stdcall;
AddContact:function():TMCONTACT; stdcall;
IsDbContact:function(contactID:TMCONTACT):bool; stdcall;
GetContactSize:function():long; stdcall;
GetEventCount:function(contactID:TMCONTACT):long; stdcall;
AddEvent:function(contactID:TMCONTACT; dbe:PDBEVENTINFO):HDBEVENT; stdcall;
DeleteEvent:function(contactID:TMCONTACT; hDbEvent:HDBEVENT):bool; stdcall;
GetBlobSize:function(hDbEvent:HDBEVENT):long; stdcall;
GetEvent:function(hDbEvent:HDBEVENT; dbe:PDBEVENTINFO):bool; stdcall;
MarkEventRead:function(contactID:TMCONTACT; hDbEvent:HDBEVENT):bool; stdcall;
GetEventContact:function(hDbEvent:HDBEVENT):TMCONTACT; stdcall;
FindFirstEvent:function(contactID:TMCONTACT):HDBEVENT; stdcall;
FindFirstUnreadEvent:function(contactID:TMCONTACT):HDBEVENT; stdcall;
FindLastEvent:function(contactID:TMCONTACT):HDBEVENT; stdcall;
FindNextEvent:function(contactID:TMCONTACT;hDbEvent:HDBEVENT):HDBEVENT; stdcall;
FindPrevEvent:function(contactID:TMCONTACT;hDbEvent:HDBEVENT):HDBEVENT; stdcall;
EnumModuleNames:function(pFunc:TDBMODULEENUMPROC; pParam:pointer):bool; stdcall;
GetContactSetting:function(contactID:TMCONTACT; szModule, szSetting:PAnsiChar; dbv:PDBVARIANT):bool; stdcall;
GetContactSettingStr:function(contactID:TMCONTACT; szModule, szSetting:PAnsiChar; dbv:PDBVARIANT):bool; stdcall;
GetContactSettingStatic:function(contactID:TMCONTACT; szModule, szSetting:PAnsiChar; dbv:PDBVARIANT):bool; stdcall;
FreeVariant:function(dbv:PDBVARIANT):bool; stdcall;
WriteContactSetting:function(contactID:TMCONTACT; dbcws:PDBCONTACTWRITESETTING):bool; stdcall;
DeleteContactSetting:function(contactID:TMCONTACT; szModule, szSetting:PAnsiChar):bool; stdcall;
EnumContactSettings:function(contactID:TMCONTACT; dbces:PDBCONTACTENUMSETTINGS):bool; stdcall;
SetSettingResident:function(bIsResident:bool; const pszSettingName:PAnsiChar):bool; stdcall;
EnumResidentSettings:function(pFunc:TDBMODULEENUMPROC; pParam:pointer):bool; stdcall;
IsSettingEncrypted:function(szModule:PAnsiChar; szSetting:PAnsiChar):bool; stdcall;
MetaDetouchSub:function(contact:PDBCachedContact; nSub:int):bool; stdcall;
MetaSetDefault:function(contact:PDBCachedContact):bool; stdcall;
MetaMergeHistory:function(ccMeta:PDBCachedContact; ccSub:PDBCachedContact):bool; stdcall;
MetaSplitHistory:function(ccMeta:PDBCachedContact; ccSub:PDBCachedContact):bool; stdcall;
end;
///////////////////////////////////////////////////////////////////////////////
// basic database checker interface
const
STATUS_MESSAGE = 0;
STATUS_WARNING = 1;
STATUS_ERROR = 2;
STATUS_FATAL = 3;
STATUS_SUCCESS = 4;
type
pDBCHeckCallback = ^tDBCHeckCallback;
tDBCHeckCallback = record
cbSize:int;
spaceProcessed,
spaceUsed: dword;
hOutFile:THANDLE;
bCheckOnly,
bBackup,
bAggressive,
bEraseHistory,
bMarkRead,
bConvertUtf:int;
pfnAddLogMessage: procedure(_type:int; const szFormat:PWideChar{;...}); cdecl;
end;
type
PMIDatabaseChecker = ^MIDatabaseChecker;
MIDatabaseChecker = interface
function Start(callback:PDBCHeckCallback):bool;stdcall;
function CheckDb(phase:int; firstTime:int):bool; stdcall;
procedure Destroy(); stdcall;
end;
///////////////////////////////////////////////////////////////////////////////
// Each database plugin should register itself using this structure
{
Codes for DATABASELINK functions
}
const
// grokHeader() error codes
EGROKPRF_NOERROR = 0;
EGROKPRF_CANTREAD = 1; // can't open the profile for reading
EGROKPRF_UNKHEADER = 2; // header not supported, not a supported profile
EGROKPRF_VERNEWER = 3; // header correct, version in profile newer than reader/writer
EGROKPRF_DAMAGED = 4; // header/version fine, other internal data missing, damaged.
EGROKPRF_OBSOLETE = 5; // obsolete database version detected, requiring conversion
// makeDatabase() error codes
EMKPRF_CREATEFAILED = 1; // for some reason CreateFile() didnt like something
type
PDATABASELINK = ^TDATABASELINK;
TDATABASELINK = record
cbSize : int;
szShortName:PAnsiChar; // uniqie short database name
szFullName:TChar; // in English, auto-translated by the core
{
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
Returns: 0 on success, non zero on failure - error contains extended error information, see EMKPRF_
}
makeDatabase : function (const profile:TChar):int; cdecl;
{
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
}
grokHeader : function (const profile:TChar):int; cdecl;
{
Affect: Tell the database to create all services/hooks that a 3.xx legacy database might support into link,
which is a DATABASELINK structure
Returns: 0 on success, nonzero on failure
}
Load : function (const profile:TChar; bReadOnly:bool):PMIDatabase; cdecl;
{
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() was never called, wasLoaded is set to 1 if Load() was ever called.
}
Unload : function (db:PMIDatabase):int; cdecl;
{
Returns a pointer to the database checker or NULL if a database doesn't support checking
When you don't need this object aanymore, call its Destroy() method
}
CheckDB : function (const profile:PWideChar; error:pint):PMIDatabaseChecker;cdecl;
end;
///////////////////////////////////////////////////////////////////////////////
// cache access functions
function db_get_contact(hContact:TMCONTACT):PDBCachedContact; stdcall;
external CoreDLL name 'db_get_contact';
///////////////////////////////////////////////////////////////////////////////
// Database list's services
const
{
MS_DB_REGISTER_PLUGIN : registers a database plugin
wParam : 0 (unused)
lParam : DATABASELINK* = database link description
}
MS_DB_REGISTER_PLUGIN:PAnsiChar = 'DB/RegisterPlugin';
{
MS_DB_FIND_PLUGIN : looks for a database plugin suitable to open this file
wParam : 0 (unused)
lParam : const TCHAR* = name of the database file
returns DATABASELINK* of the required plugin or NULL on error
}
MS_DB_FIND_PLUGIN:PAnsiChar = 'DB/FindPlugin';
{
MS_DB_GET_CURRENT : returns the database pointer for the current profile
wParam : 0 (unused)
lParam : 0 (unused)
returns MIDatabase* of the current profile or NULL on error
}
MS_DB_GET_CURRENT:PAnsiChar = 'DB/GetCurrentDb';
{
MS_DB_INIT_INSTANCE : initializes a database instance
wParam : 0 (unused)
lParam : MIDatabase* = pointer to a database instance
returns 0
}
MS_DB_INIT_INSTANCE:PAnsiChar = 'DB/InitDbInstance';
{
MS_DB_DESTROY_INSTANCE : destroys a database instance
wParam : 0 (unused)
lParam : MIDatabase* = pointer to a database instance
returns 0
}
MS_DB_DESTROY_INSTANCE:PAnsiChar = 'DB/DestroyDbInstance';
{$ENDIF}
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