DB2Meta.cpp

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/*
 * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */
 
#include "DB2Meta.h"
#include "Common.h"
#include "Errors.h"
 
bool DB2Meta::HasIndexFieldInData() const
{
 return IndexField != -1;
}
 
uint32 DB2Meta::GetIndexField() const
{
 return IndexField == -1 ? 0 : uint32(IndexField);
}
 
uint32 DB2Meta::GetRecordSize() const
{
 uint32 size = 0;
 for (uint32 i = 0; i < FieldCount; ++i)
 {
 for (uint8 j = 0; j < Fields[i].ArraySize; ++j)
 {
 if (i >= FileFieldCount && int32(i) == ParentIndexField)
 {
 size += 4;
 continue;
 }
 
 switch (Fields[i].Type)
 {
 case FT_BYTE:
 size += 1;
 break;
 case FT_SHORT:
 size += 2;
 break;
 case FT_FLOAT:
 case FT_INT:
 size += 4;
 break;
 case FT_LONG:
 size += 8;
 break;
 case FT_STRING:
 size += sizeof(LocalizedString);
 break;
 case FT_STRING_NOT_LOCALIZED:
 size += sizeof(char*);
 break;
 default:
 ABORT_MSG("Unsupported column type specified %c", Fields[i].Type);
 break;
 }
 }
 }
 
 if (!HasIndexFieldInData())
 size += 4;
 
 return size;
}
 
uint32 DB2Meta::GetIndexFieldOffset() const
{
 if (IndexField == -1)
 return 0;
 
 uint32 offset = 0;
 
 for (int32 i = 0; i < IndexField; ++i)
 {
 for (uint8 j = 0; j < Fields[i].ArraySize; ++j)
 {
 if (i >= int32(FileFieldCount) && i == ParentIndexField)
 {
 offset += 4;
 continue;
 }
 
 switch (Fields[i].Type)
 {
 case FT_BYTE:
 offset += 1;
 break;
 case FT_SHORT:
 offset += 2;
 break;
 case FT_FLOAT:
 case FT_INT:
 offset += 4;
 break;
 case FT_LONG:
 offset += 8;
 break;
 case FT_STRING:
 offset += sizeof(LocalizedString);
 break;
 case FT_STRING_NOT_LOCALIZED:
 offset += sizeof(char*);
 break;
 default:
 ABORT_MSG("Unsupported column type specified %c", Fields[i].Type);
 break;
 }
 }
 }
 
 return offset;
}
 
int32 DB2Meta::GetParentIndexFieldOffset() const
{
 if (ParentIndexField == -1)
 return -1;
 
 uint32 offset = 0;
 if (!HasIndexFieldInData())
 offset += 4;
 
 for (int32 i = 0; i < ParentIndexField; ++i)
 {
 for (uint8 j = 0; j < Fields[i].ArraySize; ++j)
 {
 switch (Fields[i].Type)
 {
 case FT_BYTE:
 offset += 1;
 break;
 case FT_SHORT:
 offset += 2;
 break;
 case FT_FLOAT:
 case FT_INT:
 offset += 4;
 break;
 case FT_LONG:
 offset += 8;
 break;
 case FT_STRING:
 offset += sizeof(LocalizedString);
 break;
 case FT_STRING_NOT_LOCALIZED:
 offset += sizeof(char*);
 break;
 default:
 ABORT_MSG("Unsupported column type specified %c", Fields[i].Type);
 break;
 }
 }
 }
 
 return offset;
}
 
uint32 DB2Meta::GetDbIndexField() const
{
 if (IndexField == -1)
 return 0;
 
 uint32 index = 0;
 for (uint32 i = 0; i < FieldCount && i < uint32(IndexField); ++i)
 index += Fields[i].ArraySize;
 
 return index;
}
 
uint32 DB2Meta::GetDbFieldCount() const
{
 uint32 fields = 0;
 for (uint32 i = 0; i < FieldCount; ++i)
 fields += Fields[i].ArraySize;
 
 if (!HasIndexFieldInData())
 ++fields;
 
 return fields;
}
 
bool DB2Meta::IsSignedField(uint32 field) const
{
 switch (Fields[field].Type)
 {
 case FT_STRING:
 case FT_STRING_NOT_LOCALIZED:
 case FT_FLOAT:
 return false;
 case FT_INT:
 case FT_BYTE:
 case FT_SHORT:
 case FT_LONG:
 default:
 break;
 }
 if (field == uint32(IndexField) || field == uint32(ParentIndexField))
 return false;
 
 return Fields[field].IsSigned;
}