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lwhitedb.c
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/*
MIT License
Copyright (c) 2016 Joe Oszlanczi [email protected]
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
extern "C"
{
#include <lua.h>
#include <lauxlib.h>
#include "dbapi.h"
#include "indexapi.h"
};
#include "lwhitedb.h"
#include <string.h>
#include <assert.h>
#define WHITEDB_METATABLE ":whitedb_meta_table:"
#define WHITEDB_RECORD_METATABLE ":whitedb_record_meta_table:"
#define WHITEDB_NAME "whitedb"
#define WHITEDB_MAX_FIND_STR_SIZE 64
#define DWhiteDbNameSize 64
#define DWhiteDbMaxMultiIndexSize 16
#define DWhiteDbMaxQuerySize 20
#define DWhiteDbVersion "0.1.1"
//static int whitedb_record_metatable_ref;
//---------------------------------------------------------
// iterator modes
// 1 - normal database record iterator
// 2 - normal database parent iterator
typedef struct whitedb_record_iterator
{
void* pWhiteDb;
void* pRecord;
void* pParent;
int iMode;
int whitedb_record_metatable_ref;
} whitedb_record_iterator;
//---------------------------------------------------------
typedef struct whitedb_find_iterator
{
void* pWhiteDb;
void* pRecord;
int iFieldIndex;
int iFieldType;
int iFiendCond;
double dValue;
int bValue;
char sValue[WHITEDB_MAX_FIND_STR_SIZE + 1];
int whitedb_record_metatable_ref;
} whitedb_find_iterator;
//---------------------------------------------------------
typedef struct whitedb_instance
{
void* pWhiteDb;
int iMode;
int iPermissions;
char sName[DWhiteDbNameSize + 1];
wg_int iLockReadTr;
wg_int iLockWriteTr;
int iLockRead;
int iLockWrite;
int whitedb_record_metatable_ref;
} whitedb_instance;
//---------------------------------------------------------
typedef struct whitedb_record
{
void* pWhiteDb;
void* pRecord;
wg_int iError;
int whitedb_record_metatable_ref;
} whitedb_record;
//---------------------------------------------------------
typedef struct whitedb_query_iterator
{
void* pWhiteDb;
wg_query* pQuery;
int whitedb_record_metatable_ref;
} whitedb_query_iterator;
//---------------------------------------------------------
static whitedb_instance* check_instance(lua_State *l, int iIndex)
{
assert(lua_gettop(l) > 0);
#ifdef _DEBUG
whitedb_instance* instance = (whitedb_instance*)luaL_checkudata(l, iIndex, WHITEDB_METATABLE);
#else
whitedb_instance* instance = (whitedb_instance*)lua_touserdata(l, iIndex);
#endif
assert(instance);
return instance;
}
//---------------------------------------------------------
#define INSTANCE_EXIT_BOOL(NAME) if ( !NAME ) { lua_pushboolean(l, 0 ); return 1; }
#define INSTANCE_EXIT_NIL(NAME) if ( !NAME ) { lua_pushnil(l); return 1; }
//---------------------------------------------------------
static const char* STR_COND_EQUAL = "=";
static const char* STR_COND_NOT_EQUAL = "!=";
static const char* STR_COND_LESSTHAN = "<";
static const char* STR_COND_GREATER = ">";
static const char* STR_COND_LTEQUAL = "<=";
static const char* STR_COND_GTEQUAL = ">=";
//---------------------------------------------------------
const char* cond_to_str(int iCondition)
{
switch (iCondition)
{
case WG_COND_EQUAL: return STR_COND_EQUAL;
case WG_COND_NOT_EQUAL: return STR_COND_NOT_EQUAL;
case WG_COND_LESSTHAN: return STR_COND_LESSTHAN;
case WG_COND_GREATER: return STR_COND_GREATER;
case WG_COND_LTEQUAL: return STR_COND_LTEQUAL;
case WG_COND_GTEQUAL: return STR_COND_GTEQUAL;
default:
assert(0);
break;
}
return NULL;
}
//---------------------------------------------------------
int str_to_cond(const char* sCondition)
{
if ( strcmp(sCondition, STR_COND_EQUAL) == 0)
return WG_COND_EQUAL;
if (strcmp(sCondition, STR_COND_NOT_EQUAL) == 0)
return WG_COND_NOT_EQUAL;
if (strcmp(sCondition, STR_COND_LESSTHAN) == 0)
return WG_COND_LESSTHAN;
if (strcmp(sCondition, STR_COND_GREATER) == 0)
return WG_COND_GREATER;
if (strcmp(sCondition, STR_COND_LTEQUAL) == 0)
return WG_COND_LTEQUAL;
if (strcmp(sCondition, STR_COND_GTEQUAL) == 0)
return WG_COND_GTEQUAL;
assert(0);
return 0;
}
//---------------------------------------------------------
static int whitedb_record_to_userdata(int whitedb_record_metatable_ref, void* pWhiteDb, void* pRecord, int iSize, lua_State *l )
{
assert(pWhiteDb);
void* pIntRecord = pRecord == NULL ? wg_create_record(pWhiteDb, iSize) : pRecord;
if ( pIntRecord == NULL)
{
lua_pushnil(l);
return 1;
}
whitedb_record* pNewIntRecord = (whitedb_record*)lua_newuserdata(l, sizeof(whitedb_record));
pNewIntRecord->pRecord = pIntRecord;
pNewIntRecord->pWhiteDb = pWhiteDb;
pNewIntRecord->whitedb_record_metatable_ref = whitedb_record_metatable_ref;
lua_rawgeti(l, LUA_REGISTRYINDEX, whitedb_record_metatable_ref );
lua_setmetatable(l, -2);
return 1;
}
//---------------------------------------------------------
static int whitedb_record_createxx(lua_State *l)
{
whitedb_record* pRecord = (whitedb_record*)lua_touserdata(l, 1);
assert(pRecord);
int iSize = 1;
if (lua_gettop(l) > 1)
iSize = lua_tointeger(l, 2);
return whitedb_record_to_userdata(pRecord->whitedb_record_metatable_ref, pRecord->pWhiteDb, NULL, iSize, l);
}
//---------------------------------------------------------
static int whitedb_record_create(lua_State *l)
{
assert(lua_gettop(l) > 0);
whitedb_instance* pInstance = (whitedb_instance*)lua_touserdata(l, 1);
int iSize = 1;
if ( lua_gettop(l) > 1 )
iSize = lua_tointeger(l, 2);
assert(pInstance);
assert(pInstance->pWhiteDb);
return whitedb_record_to_userdata(pInstance->whitedb_record_metatable_ref, pInstance->pWhiteDb, NULL, iSize, l);
}
//---------------------------------------------------------
static int whitedb_record_delete(lua_State *l)
{
assert(lua_gettop(l) > 0);
whitedb_record* pRecord = (whitedb_record*)lua_touserdata(l, 1);
assert(pRecord);
wg_int iSuccess = wg_delete_record(pRecord->pWhiteDb, pRecord->pRecord);
lua_pushboolean( l, iSuccess == 0);
lua_pushinteger( l, iSuccess);
return 2;
}
//---------------------------------------------------------
static int whitedb_records_iterator(lua_State *l)
{
whitedb_record_iterator* pIterator = (whitedb_record_iterator*)lua_touserdata(l, lua_upvalueindex(1));
void* pNext = NULL;
if (pIterator->iMode == 1)
{
if (pIterator->pRecord)
pNext = wg_get_next_record(pIterator->pWhiteDb, pIterator->pRecord);
else
pNext = wg_get_first_record(pIterator->pWhiteDb);
}
else if (pIterator->iMode == 2)
{
if (pIterator->pParent)
pNext = wg_get_next_parent(pIterator->pWhiteDb, pIterator->pRecord, pIterator->pParent);
else
pNext = wg_get_first_parent(pIterator->pWhiteDb, pIterator->pRecord );
}
else
{
assert(0);
}
if (pNext)
{
if (pIterator->iMode == 1)
{
pIterator->pRecord = pNext;
whitedb_record_to_userdata(pIterator->whitedb_record_metatable_ref, pIterator->pWhiteDb, pNext, 0, l );
}
else if (pIterator->iMode == 2)
{
pIterator->pParent = pNext;
whitedb_record_to_userdata(pIterator->whitedb_record_metatable_ref,pIterator->pWhiteDb, pNext, 0, l );
}
else
{
assert(0);
}
return 1;
}
return 0;
}
//---------------------------------------------------------
static int whitedb_import_csv(lua_State *l)
{
assert(lua_gettop(l) > 1 );
whitedb_instance* pInstance = check_instance(l,1);
assert(pInstance);
wg_int iResult = wg_import_db_csv(pInstance->pWhiteDb, (char*) lua_tostring(l, 2));
lua_pushboolean(l, iResult == 0 ? 1 : 0 );
return 1;
}
//---------------------------------------------------------
static int whitedb_export_csv(lua_State *l)
{
assert(lua_gettop(l) > 1);
whitedb_instance* pInstance = check_instance(l,1);
assert(pInstance);
wg_export_db_csv(pInstance->pWhiteDb, (char*)lua_tostring(l, 2));
lua_pushboolean(l, 1 );
return 1;
}
//---------------------------------------------------------
static int whitedb_print(lua_State *l)
{
assert(lua_gettop(l) > 0);
whitedb_instance* pInstance = check_instance(l,1);
assert(pInstance);
wg_print_db(pInstance->pWhiteDb);
return 0;
}
//---------------------------------------------------------
static int remove_records_from_record( void* pWhiteDb, void* pRecord )
{
int iSuccess = 1;
int iFiledSize = wg_get_record_len( pWhiteDb, pRecord);
for ( int iFieldIdx = 0; iFieldIdx < iFiledSize; iFieldIdx++ )
{
if ( wg_get_field_type( pWhiteDb, pRecord, iFieldIdx) == WG_RECORDTYPE )
{
if ( wg_set_field( pWhiteDb, pRecord, iFieldIdx, 0) != 0 )
iSuccess = 0;
}
}
return iSuccess;
}
//---------------------------------------------------------
static int remove_record_from_parents( void* pWhiteDb, void* pRecord )
{
int iSuccess = 1;
void* pParent = wg_get_first_parent( pWhiteDb, pRecord );
while ( pParent )
{
int iFiledSize = wg_get_record_len( pWhiteDb, pParent);
for ( int iFieldIdx = 0; iFieldIdx < iFiledSize; iFieldIdx++ )
{
if ( wg_get_field_type( pWhiteDb, pParent, iFieldIdx) == WG_RECORDTYPE )
{
wg_int iFieldData = wg_get_field( pWhiteDb, pParent, iFieldIdx );
void* pFieldRecord = wg_decode_record( pWhiteDb, iFieldData );
if ( pFieldRecord == pRecord )
{
if ( wg_set_field( pWhiteDb, pParent, iFieldIdx, 0) != 0 )
iSuccess = 0;
}
}
}
pParent = wg_get_next_parent( pWhiteDb, pRecord, pParent);
}
return iSuccess;
}
//returns 0 on success
// * returns -1 if the record is referenced by others and cannot be deleted.
// * returns -2 on general error
// * returns -3 on fatal error
//---------------------------------------------------------
static int whitedb_clear(lua_State *l)
{
assert(lua_gettop(l) > 0);
whitedb_instance* pInstance = check_instance(l,1);
assert(pInstance);
void* wg_record = wg_get_first_record(pInstance->pWhiteDb);
wg_int status = 0;
void* pNext = NULL;
while ( wg_record )
{
pNext = wg_get_next_record(pInstance->pWhiteDb, wg_record );
status = wg_delete_record(pInstance->pWhiteDb, wg_record );
if ( status < 0 )
{
switch( status )
{
case -1:
{
if ( remove_record_from_parents( pInstance->pWhiteDb, wg_record ) )
status = wg_delete_record(pInstance->pWhiteDb, wg_record );
if ( status < 0 )
luaL_error(l, "Fatal error cannot remove record from parents");
break;
}
case -2:
case -3:
default:
{
luaL_error(l, "Fatal error when removeing record");
break;
}
}
}
wg_record = pNext;
}
return 0;
}
//---------------------------------------------------------
static int whitedb_records(lua_State *l)
{
assert(lua_gettop(l) > 0);
whitedb_instance* pInstance = check_instance(l,1);
assert(pInstance);
whitedb_record_iterator* pRecIterator = (whitedb_record_iterator*)lua_newuserdata(l, sizeof(whitedb_record_iterator));
pRecIterator->iMode = 1;
pRecIterator->pParent = NULL;
pRecIterator->pRecord = NULL;
pRecIterator->pWhiteDb = pInstance->pWhiteDb;
pRecIterator->whitedb_record_metatable_ref = pInstance->whitedb_record_metatable_ref;
lua_pushcclosure(l, whitedb_records_iterator, 1);
return 1;
}
//---------------------------------------------------------
static int whitedb_record_removec_records(lua_State *l)
{
assert(lua_gettop(l) > 0);
whitedb_record* pRecord = (whitedb_record*) lua_touserdata(l, 1);
assert(pRecord);
lua_pushboolean(l, remove_records_from_record( pRecord->pWhiteDb, pRecord->pRecord));
return 1;
}
//---------------------------------------------------------
static int whitedb_record_field_size(lua_State *l)
{
assert(lua_gettop(l) > 0);
whitedb_record* pRecord = (whitedb_record*) lua_touserdata(l, 1);
assert(pRecord);
wg_int iSize = wg_get_record_len(pRecord->pWhiteDb, pRecord->pRecord);
if (iSize < 0)
lua_pushnil(l);
else
lua_pushinteger(l, iSize);
return 1;
}
//---------------------------------------------------------
static int whitedb_record_parents(lua_State *l)
{
assert(lua_gettop(l) > 0);
whitedb_record* pRecord = (whitedb_record*)lua_touserdata(l, 1);
assert(pRecord);
whitedb_record_iterator* pRecordIterator = (whitedb_record_iterator*)lua_newuserdata(l, sizeof(whitedb_record_iterator));
pRecordIterator->iMode = 2;
pRecordIterator->pParent = NULL;
pRecordIterator->pRecord = pRecord->pRecord;
pRecordIterator->pWhiteDb = pRecord->pWhiteDb;
pRecordIterator->whitedb_record_metatable_ref = pRecord->whitedb_record_metatable_ref;
lua_pushcclosure(l, whitedb_records_iterator, 1);
return 1;
}
//---------------------------------------------------------
static int whitedb_record_delete_first(lua_State *l)
{
assert(lua_gettop(l) > 0);
whitedb_instance* pInstance = check_instance(l,1);
assert(pInstance);
void* pRecord = wg_get_first_record( pInstance->pWhiteDb );
if ( pRecord )
{
wg_int iResult = wg_delete_record( pInstance->pWhiteDb, pRecord );
lua_pushboolean(l, iResult == 0);
return 1;
}
lua_pushboolean(l, 0);
return 1;
}
//---------------------------------------------------------
static int whitedb_record_delete2(lua_State *l)
{
assert(lua_gettop(l) > 1);
whitedb_instance* pInstance = check_instance(l,1);
assert(pInstance);
whitedb_record* pRecord = (whitedb_record*)lua_touserdata(l, 2);
assert(pRecord);
wg_int iSuccess = wg_delete_record(pRecord->pWhiteDb, pRecord->pRecord);
lua_pushboolean(l, iSuccess == 0);
lua_pushinteger(l, iSuccess);
return 2;
}
//---------------------------------------------------------
static int whitedb_is_write_lock(lua_State *l)
{
assert(lua_gettop(l) > 0);
whitedb_instance* pInstance = check_instance(l, 1);
INSTANCE_EXIT_NIL(pInstance)
lua_pushboolean(l, pInstance->iLockWrite );
return 1;
}
//---------------------------------------------------------
static int whitedb_is_read_lock(lua_State *l)
{
assert(lua_gettop(l) > 0);
whitedb_instance* pInstance = check_instance(l, 1);
INSTANCE_EXIT_NIL(pInstance)
lua_pushboolean(l, pInstance->iLockRead );
return 1;
}
//---------------------------------------------------------
static int whitedb_read_start(lua_State *l)
{
assert(lua_gettop(l) > 0);
whitedb_instance* pInstance = check_instance(l, 1);
INSTANCE_EXIT_NIL(pInstance)
if ( pInstance->iLockRead == 1 )
{
lua_pushboolean(l, true );
assert( 0 );
return 1;
}
wg_int wLock = wg_start_read(pInstance->pWhiteDb);
if ( wLock != 0 )
{
pInstance->iLockRead = 1;
pInstance->iLockReadTr = wLock;
lua_pushboolean(l, 1 );
return 1;
}
lua_pushboolean(l, 0 );
return 1;
}
//---------------------------------------------------------
static int whitedb_read_end(lua_State *l)
{
assert(lua_gettop(l) > 0);
whitedb_instance* pInstance = check_instance(l, 1);
INSTANCE_EXIT_NIL(pInstance)
if ( pInstance->iLockRead == 0 )
{
lua_pushboolean(l, 0);
//assert(0);
return 1;
}
wg_int iWrite = wg_end_read(pInstance->pWhiteDb, pInstance->iLockReadTr );
if ( iWrite == 1 )
{
pInstance->iLockRead = 0;
pInstance->iLockReadTr = 0;
lua_pushboolean(l, 1 );
return 1;
}
lua_pushboolean(l, 0 );
return 1;
}
//---------------------------------------------------------
static int whitedb_write_start(lua_State *l)
{
assert(lua_gettop(l) > 0);
whitedb_instance* pInstance = check_instance(l, 1);
INSTANCE_EXIT_NIL(pInstance)
if ( pInstance->iLockWrite == 1 )
{
assert(0);
lua_pushboolean(l, 1);
return 1;
}
wg_int iResult = wg_start_write(pInstance->pWhiteDb);
if ( iResult != 0 )
{
pInstance->iLockWrite = 1;
pInstance->iLockWriteTr = iResult;
lua_pushboolean(l, 1);
return 1;
}
lua_pushboolean(l,0);
return 1;
}
//---------------------------------------------------------
static int whitedb_write_end(lua_State *l)
{
assert(lua_gettop(l) > 0);
whitedb_instance* pInstance = check_instance(l, 1);
INSTANCE_EXIT_NIL(pInstance)
if ( pInstance->iLockWrite == 0 )
{
//assert(0);
lua_pushboolean(l, 0 );
return 1;
}
wg_int iResult = wg_end_write(pInstance->pWhiteDb, pInstance->iLockWriteTr );
if ( iResult == 1 )
{
pInstance->iLockWrite = 0;
pInstance->iLockWriteTr = 0;
lua_pushboolean(l, 1);
return 1;
}
lua_pushboolean(l, 0 );
return 1;
}
//---------------------------------------------------------
static int whitedb_log_start(lua_State *l)
{
whitedb_instance* pInstance = check_instance(l, 1);
INSTANCE_EXIT_NIL(pInstance)
lua_pushinteger(l, wg_start_logging(pInstance->pWhiteDb));
return 1;
}
//---------------------------------------------------------
static int whitedb_log_stop(lua_State *l)
{
assert(lua_gettop(l) > 0);
whitedb_instance* pInstance = check_instance(l, 1);
INSTANCE_EXIT_NIL(pInstance)
lua_pushinteger(l, wg_stop_logging(pInstance->pWhiteDb ));
return 1;
}
//---------------------------------------------------------
static int whitedb_dump_export(lua_State *l) {
assert(lua_gettop(l) > 1);
whitedb_instance* pInstance = check_instance(l, 1);
INSTANCE_EXIT_NIL(pInstance)
int iResult = wg_dump(pInstance->pWhiteDb, (char*)lua_tostring(l, 2));
lua_pushinteger(l, iResult == 0 ? 1 : 0 );
return 1;
}
//---------------------------------------------------------
static int whitedb_dump_import(lua_State *l) {
assert(lua_gettop(l) > 0);
whitedb_instance* pInstance = check_instance(l, 1);
INSTANCE_EXIT_NIL(pInstance);
int iResult = wg_import_dump(pInstance->pWhiteDb, (char*)lua_tostring(l, 1));
lua_pushboolean(l, iResult == 0 ? 1 : 0 );
return 1;
}
//---------------------------------------------------------
static int whitedb_find_record(lua_State *l)
{
whitedb_find_iterator* pIterator = (whitedb_find_iterator*)lua_touserdata(l, lua_upvalueindex(1));
if (pIterator->iFieldType == LUA_TNONE)
return 0;
void* pRec = NULL;
switch (pIterator->iFieldType )
{
case LUA_TNUMBER:
{
pRec = wg_find_record_double(pIterator->pWhiteDb, pIterator->iFieldIndex, pIterator->iFiendCond, pIterator->dValue, pIterator->pRecord);
break;
}
case LUA_TSTRING:
{
pRec = wg_find_record_str(pIterator->pWhiteDb, pIterator->iFieldIndex, pIterator->iFiendCond, pIterator->sValue, pIterator->pRecord);
break;
}
case LUA_TBOOLEAN:
{
pRec = wg_find_record_int(pIterator->pWhiteDb, pIterator->iFieldIndex, pIterator->iFiendCond, pIterator->bValue, pIterator->pRecord);
break;
}
case LUA_TNIL:
{
pRec = wg_find_record_null(pIterator->pWhiteDb, pIterator->iFieldIndex, pIterator->iFiendCond, 0, pIterator->pRecord);
break;
}
default:
break;
}
if (pRec)
{
pIterator->pRecord = pRec;
return whitedb_record_to_userdata(pIterator->whitedb_record_metatable_ref,pIterator->pWhiteDb, pRec, 0, l);
}
return 0;
}
//---------------------------------------------------------
static int whitedb_first(lua_State *l)
{
assert(lua_gettop(l) > 0);
whitedb_instance* pInstance = check_instance(l, 1);
INSTANCE_EXIT_NIL(pInstance)
void* pRecord = wg_get_first_record(pInstance->pWhiteDb);
if ( pRecord )
return whitedb_record_to_userdata(pInstance->whitedb_record_metatable_ref, pInstance->pWhiteDb, pRecord, 0 , l);
lua_pushnil(l);
return 1;
}
//---------------------------------------------------------
static int whitedb_next(lua_State *l)
{
assert(lua_gettop(l) > 1);
whitedb_instance* pInstance = check_instance(l, 1);
INSTANCE_EXIT_NIL(pInstance)
whitedb_record* pRecord = (whitedb_record*) lua_touserdata(l, 2);
assert( pRecord );
void* pNextRecord = wg_get_next_record( pRecord->pWhiteDb, pRecord->pRecord );
if ( pNextRecord )
return whitedb_record_to_userdata(pRecord->whitedb_record_metatable_ref, pRecord->pWhiteDb , pNextRecord, 0, l );
lua_pushnil(l);
return 1;
}
//---------------------------------------------------------
static int whitedb_find(lua_State *l)
{
assert(lua_gettop(l) > 3);
whitedb_instance* pInstance = check_instance(l, 1);
INSTANCE_EXIT_NIL(pInstance)
int iColumn = lua_tointeger(l, 2);
const char* sCondition = lua_tostring(l, 3);
int iType = lua_type(l, 4);
int iCondition = str_to_cond(sCondition);
void* pRec = NULL;
whitedb_find_iterator* pFindIterator = (whitedb_find_iterator*)lua_newuserdata(l, sizeof(whitedb_find_iterator));
pFindIterator->pWhiteDb = pInstance->pWhiteDb;
pFindIterator->iFieldIndex = --iColumn;
pFindIterator->iFieldType = iType;
pFindIterator->iFiendCond = iCondition;
pFindIterator->pRecord = NULL;
pFindIterator->whitedb_record_metatable_ref = pInstance->whitedb_record_metatable_ref;
switch (iType)
{
case LUA_TNUMBER:
{
pFindIterator->dValue = lua_tonumber(l, 4);
break;
}
case LUA_TSTRING:
{
strcpy_s( pFindIterator->sValue, WHITEDB_MAX_FIND_STR_SIZE, lua_tostring(l, 4) );
break;
}
case LUA_TBOOLEAN:
{
pFindIterator->bValue = lua_toboolean(l, 4) ? 1 : 0;
break;
}
case LUA_TNIL:
{
break;
}
default:
pFindIterator->iFieldType = LUA_TNONE;
break;
}
lua_pushcclosure(l, whitedb_find_record, 1);
return 1;
}
//---------------------------------------------------------
wg_int lua_value_to_wg(void* db, lua_State *l, int index)
{
wg_int iResult = 0;
int iType = lua_type(l, index);
switch (iType)
{
case LUA_TNUMBER:
{
iResult = wg_encode_double(db, lua_tonumber(l, index));
break;
}
case LUA_TSTRING:
{
iResult = wg_encode_str(db, (char*)lua_tostring(l, index), NULL);
break;
}
case LUA_TBOOLEAN:
{
iResult = wg_encode_int(db, lua_tointeger(l, index) );
break;
}
case LUA_TLIGHTUSERDATA:
{
void* pUserData = lua_touserdata(l, index);
int iSize = lua_objlen(l, index);
assert(iSize == sizeof(void*));
iResult = wg_encode_blob(db,(char*) &pUserData, NULL, sizeof(void*) );
}
case LUA_TUSERDATA:
{
whitedb_record* pRecord = (whitedb_record*)luaL_checkudata(l, index, WHITEDB_RECORD_METATABLE);
if ( pRecord )
iResult = wg_encode_record(db, pRecord->pRecord );
else
iResult = wg_encode_null(db, 0);
break;
}
case LUA_TNIL:
default:
iResult = wg_encode_null(db, 0);
break;
}
return iResult;
}
//---------------------------------------------------------
static int whitedb_record_create_t(lua_State *l)
{
assert(lua_gettop(l) > 1);
whitedb_instance* pInstance = (whitedb_instance*)lua_touserdata(l, 1);
assert(pInstance);
assert(pInstance->pWhiteDb);
int iSize = 1;
if ( lua_type(l,2) != LUA_TTABLE )
{
lua_pushnil(l);
return 1;
}
iSize = lua_objlen(l,2);
if ( iSize < 1)
{
lua_pushnil(l);
return 1;
}
void* pRecord = wg_create_record( pInstance->pWhiteDb, iSize );
int iRec = 0;
for (int iIndex = 1; iIndex <= iSize; iIndex++ )
{
lua_rawgeti(l, 2, iIndex );
wg_int wg_data = lua_value_to_wg(pInstance->pWhiteDb, l, -1);
wg_set_field(pInstance->pWhiteDb, pRecord, iRec, wg_data);
iRec++;
lua_pop(l, 1);
}
return whitedb_record_to_userdata(pInstance->whitedb_record_metatable_ref, pInstance->pWhiteDb, pRecord, iSize, l);
}
//---------------------------------------------------------
// find db, key str
static int whitedb_find_key(lua_State *l) {
assert(lua_gettop(l) > 1);
whitedb_instance* pInstance = check_instance(l, 1);
INSTANCE_EXIT_NIL(pInstance)
const char* pStrFieldName = lua_tostring(l,2);
void* pRecord = wg_get_first_record( pInstance->pWhiteDb );
while ( pRecord )
{
if ( wg_get_field_type(pInstance->pWhiteDb,pRecord,0) == WG_STRTYPE )
{
char* strField = wg_decode_str( pInstance->pWhiteDb, wg_get_field( pInstance->pWhiteDb, pRecord, 0));
if ( strcmp( strField, pStrFieldName) == 0 )
{
return whitedb_record_to_userdata(pInstance->whitedb_record_metatable_ref, pInstance->pWhiteDb, pRecord, 0, l);
}
}
pRecord = wg_get_next_record( pInstance->pWhiteDb, pRecord);
}
lua_pushnil(l);
return 1;
}
//---------------------------------------------------------
// find db, index, cond, value
static int whitedb_find_one(lua_State *l) {
assert(lua_gettop(l) > 3);
whitedb_instance* pInstance = check_instance(l, 1);
INSTANCE_EXIT_NIL(pInstance)
int iFieldIndex = lua_tointeger(l, 2);
const char* sCondition = lua_tostring(l, 3);
int iType = lua_type(l, 4);
int iCondition = str_to_cond(sCondition);
void* pRec = NULL;
iFieldIndex--;
switch (iType)
{
case LUA_TNUMBER:
{
pRec = wg_find_record_double(pInstance->pWhiteDb, iFieldIndex, iCondition, lua_tonumber(l, 4), NULL);
break;
}
case LUA_TSTRING:
{
pRec = wg_find_record_str(pInstance->pWhiteDb, iFieldIndex, iCondition, (char*)lua_tostring(l, 4), NULL);
break;
}
case LUA_TBOOLEAN:
{
pRec = wg_find_record_int(pInstance->pWhiteDb, iFieldIndex, iCondition, lua_toboolean(l, 4) ? 1 : 0 , NULL);
break;
}
case LUA_TNIL:
{
pRec = wg_find_record_null(pInstance->pWhiteDb, iFieldIndex, iCondition, 0, NULL);
break;
}
default:
break;
}
if (pRec)
whitedb_record_to_userdata( pInstance->whitedb_record_metatable_ref, pInstance->pWhiteDb, pRec, 0, l);
else
lua_pushnil(l);
return 1;
}
//---------------------------------------------------------
static int whitedb_size(lua_State *l) {
assert(lua_gettop(l) > 0);
whitedb_instance* pInstance = check_instance(l, 1);
INSTANCE_EXIT_NIL(pInstance)
lua_pushnumber(l, wg_database_size(pInstance->pWhiteDb));
return 1;
}
//---------------------------------------------------------
static int whitedb_free_size(lua_State *l) {
assert(lua_gettop(l) > 0);
whitedb_instance* pInstance = check_instance(l, 1);
INSTANCE_EXIT_NIL(pInstance)
lua_pushnumber(l, wg_database_freesize(pInstance->pWhiteDb));
return 1;
}
//---------------------------------------------------------
static int whitedb_log_replay(lua_State *l) {
assert(lua_gettop(l) > 1);
whitedb_instance* pInstance = check_instance(l, 1);
INSTANCE_EXIT_NIL(pInstance)
lua_pushinteger(l, wg_replay_log(pInstance->pWhiteDb, (char*)lua_tostring(l,2) ));
return 1;
}
//---------------------------------------------------------
//
static int whitedb_index_create(lua_State *l) {
assert(lua_gettop(l) > 1);
whitedb_instance* pInstance = check_instance(l, 1);
INSTANCE_EXIT_NIL(pInstance)
int iFieldIndex = lua_tointeger(l, 2);
iFieldIndex--;
assert( iFieldIndex >= 0);
if (wg_column_to_index_id(pInstance->pWhiteDb, iFieldIndex, WG_INDEX_TYPE_TTREE, NULL, 0) == -1)
lua_pushboolean(l, wg_create_index(pInstance->pWhiteDb, iFieldIndex, WG_INDEX_TYPE_TTREE, NULL, 0) == 0 ? 1 : 0 );
else
lua_pushboolean(l, 0 );
return 1;
}
//---------------------------------------------------------
// db, index, table
static int whitedb_index_multi(lua_State *l) {
assert(lua_gettop(l) > 2);
if (lua_type(l, 3) != LUA_TTABLE )
{
lua_pushboolean(l, 0);
return 1;
}