/// <summary>
/// Reads strings from BIFF stream into SST array
/// </summary>
public void ReadStrings()
{
uint offset = (uint)m_readoffset + 8;
uint last = (uint)m_readoffset + RecordSize;
int lastcontinue = 0;
uint count = UniqueCount;
while (offset < last)
{
XlsFormattedUnicodeString str = new XlsFormattedUnicodeString(m_bytes, offset);
uint prefix = str.HeadSize;
uint postfix = str.TailSize;
uint len = str.CharacterCount;
uint size = prefix + postfix + len + ((str.IsMultiByte) ? len : 0);
if (offset + size > last)
{
if (lastcontinue >= continues.Count)
break;
uint contoffset = continues[lastcontinue];
byte encoding = Buffer.GetByte(m_bytes, (int)contoffset + 4);
byte[] buff = new byte[size * 2];
Buffer.BlockCopy(m_bytes, (int)offset, buff, 0, (int)(last - offset));
if (encoding == 0 && str.IsMultiByte)
{
len -= (last - prefix - offset) / 2;
string temp = Encoding.Unicode.GetString(m_bytes,
(int)contoffset + 5,
(int)len);
byte[] tempbytes = Encoding.Unicode.GetBytes(temp);
Buffer.BlockCopy(tempbytes, 0, buff, (int)(last - offset), tempbytes.Length);
Buffer.BlockCopy(m_bytes, (int)(contoffset + 5 + len), buff, (int)(last - offset + len + len), (int)postfix);
offset = contoffset + 5 + len + postfix;
}
else if (encoding == 1 && str.IsMultiByte == false)
{
len -= (last - offset - prefix);
string temp = Encoding.Unicode.GetString(m_bytes,
(int)contoffset + 5,
(int)(len + len));
byte[] tempbytes = Encoding.Unicode.GetBytes(temp);
Buffer.BlockCopy(tempbytes, 0, buff, (int)(last - offset), tempbytes.Length);
Buffer.BlockCopy(m_bytes, (int)(contoffset + 5 + len + len), buff, (int)(last - offset + len), (int)postfix);
offset = contoffset + 5 + len + len + postfix;
}
else
{
Buffer.BlockCopy(m_bytes, (int)contoffset + 5, buff, (int)(last - offset), (int)(size - last + offset));
offset = contoffset + 5 + size - last + offset;
}
last = contoffset + 4 + BitConverter.ToUInt16(m_bytes, (int)contoffset + 2);
lastcontinue++;
str = new XlsFormattedUnicodeString(buff, 0);
}
else
{
offset += size;
if (offset == last)
{
if (lastcontinue < continues.Count)
{
uint contoffset = continues[lastcontinue];
offset = contoffset + 4;
last = offset + BitConverter.ToUInt16(m_bytes, (int)contoffset + 2);
lastcontinue++;
}
else
count = 1;
}
}
m_strings.Add(str.Value);
count--;
if (count == 0)
break;
}
}
