public static int GetOffset(byte[] data)
{
WDBHeader header = (WDBHeader)GemType.RawDeserialize(data, typeof(WDBHeader));
if (header.nId != WDBConst.HeadMark)
{
return(0);
}
int DataOffset = Marshal.SizeOf(typeof(WDBHeader));
// read filed name
int bufLen = header.nNameBufLen * sizeof(short);
if (bufLen > 0)
{
int index = DataOffset;
for (int i = 0; i < header.nFields; i++)
{
int nextindex = 0, count = 0;
if (GetNDBStrLen(data, index, ref nextindex, ref count))
{
string fieldName = Encoding.Unicode.GetString(data, index, count);
index = nextindex;
}
else
{
return(0);
}
}
DataOffset = index;
}
else
{
return(0);
}
return(DataOffset);
}
public bool OpenData(byte[] data, string ndbName)
{
/*
* FileStream fs = new FileStream(path, FileMode.Open);
* if (fs.CanRead == false)
* return false;
* mData = new byte[fs.Length];
* fs.Read(mData, 0, (int)fs.Length);
* fs.Close();
*/
mData = data;
// read header
mHeader = (WDBHeader)GemType.RawDeserialize(mData, typeof(WDBHeader));
if (mHeader.nId != WDBConst.HeadMark)
{
return(false);
}
mDataOffset = Marshal.SizeOf(typeof(WDBHeader));
// read filed name
int bufLen = mHeader.nNameBufLen * sizeof(short);
if (bufLen > 0)
{
int index = mDataOffset;
mFieldName = new Dictionary <string, int> ();
for (int i = 0; i < mHeader.nFields; i++)
{
int nextindex = 0, count = 0;
if (GetNDBStrLen(mData, index, ref nextindex, ref count))
{
string fieldName = Encoding.Unicode.GetString(mData, index, count);
index = nextindex;
if (mFieldName.ContainsKey(fieldName))
{
LKDebug.LogError(fieldName + " Have Exist.In table:" + ndbName);
continue;
}
mFieldName.Add(fieldName, i);
}
else
{
return(false);
}
}
mDataOffset = index;
}
else
{
return(true);
}
if (mDataOffset % 4 != 0)
{
mDataOffset += 2;
}
if (mDataOffset % 4 != 0)
{
mDataOffset += 2;
}
// read the first data as field type
mFieldType = new int[mHeader.nFields];
for (int j = 0; j < mHeader.nFields; j++)
{
mFieldType[j] = BitConverter.ToInt32(mData, mDataOffset + j * sizeof(int));
}
for (int j = 0; j < mHeader.nFields; j++)
{
mDataOffset += sizeof(int);
}
// string offset
mStringOffset = mDataOffset + mHeader.nRecords * mHeader.nRecordSize;
// create index
int indexfield = -1;
for (int i = 0; i < GetFieldCount(); i++)
{
int type = GetFieldType(i);
if (type == (int)EWDB_FIELD_TYPE.WFT_V_INDEX)
{
indexfield = i;
}
}
if (indexfield >= 0)
{
mIndex = new Dictionary <int, int> ();
//MaybeEmpty
for (int i = 0; i < GetRecordCount(); i++)
{
int activeIndex = (int)GetDataByNumber(i, indexfield);
if (mIndex.ContainsKey(activeIndex))
{
LKDebug.LogError(activeIndex + " Have Exist.In table:" + ndbName);
continue;
}
mIndex.Add(activeIndex, i);
}
}
return(true);
}
