/// <summary>
/// Create a single instance initialized with default values
/// </summary>
protected BATBlock()
{
_data = new byte[POIFSConstants.BIG_BLOCK_SIZE];
for (int i = 0; i < this._data.Length; i++)
{
this._data[i] = _default_value;
}
_fields = new IntegerField[_entries_per_block];
int offset = 0;
for (int j = 0; j < _entries_per_block; j++)
{
_fields[j] = new IntegerField(offset);
offset += LittleEndianConsts.INT_SIZE;
}
}
/// <summary>
/// create a new HeaderBlockReader from an Stream
/// </summary>
/// <param name="stream">the source Stream</param>
public HeaderBlockReader(Stream stream)
{
stream.Position = 0;
this._data = ReadFirst512(stream);
// verify signature
long signature = LittleEndian.GetLong(_data, HeaderBlockConstants._signature_offset);
if (signature != HeaderBlockConstants._signature)
{
// Is it one of the usual suspects?
byte[] OOXML_FILE_HEADER = POIFSConstants.OOXML_FILE_HEADER;
if (_data[0] == OOXML_FILE_HEADER[0] &&
_data[1] == OOXML_FILE_HEADER[1] &&
_data[2] == OOXML_FILE_HEADER[2] &&
_data[3] == OOXML_FILE_HEADER[3])
{
throw new OfficeXmlFileException("The supplied data appears to be in the Office 2007+ XML. POI only supports OLE2 Office documents");
}
if ((signature & unchecked((long)0xFF8FFFFFFFFFFFFFL)) == 0x0010000200040009L)
{
// BIFF2 raw stream starts with BOF (sid=0x0009, size=0x0004, data=0x00t0)
throw new ArgumentException("The supplied data appears to be in BIFF2 format. "
+ "POI only supports BIFF8 format");
}
// Give a generic error
throw new IOException("Invalid header signature; Read "
+ LongToHex(signature) + ", expected "
+ LongToHex(HeaderBlockConstants._signature));
}
// Figure out our block size
if (_data[30] == 12)
{
this.bigBlockSize = POIFSConstants.LARGER_BIG_BLOCK_SIZE_DETAILS;
}
else if (_data[30] == 9)
{
this.bigBlockSize = POIFSConstants.SMALLER_BIG_BLOCK_SIZE_DETAILS;
}
else
{
throw new IOException("Unsupported blocksize (2^" + _data[30] + "). Expected 2^9 or 2^12.");
}
// Setup the fields to read and write the counts and starts
_bat_count = new IntegerField(HeaderBlockConstants._bat_count_offset, _data).Value;
_property_start = new IntegerField(HeaderBlockConstants._property_start_offset, _data).Value;
_sbat_start = new IntegerField(HeaderBlockConstants._sbat_start_offset, _data).Value;
_sbat_count = new IntegerField(HeaderBlockConstants._sbat_block_count_offset, _data).Value;
_xbat_start = new IntegerField(HeaderBlockConstants._xbat_start_offset, _data).Value;
_xbat_count = new IntegerField(HeaderBlockConstants._xbat_count_offset, _data).Value;
// Fetch the rest of the block if needed
if (bigBlockSize.GetBigBlockSize() != 512)
{
int rest = bigBlockSize.GetBigBlockSize() - 512;
byte[] tmp = new byte[rest];
IOUtils.ReadFully(stream, tmp);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Property"/> class.
/// </summary>
protected Property()
{
_raw_data = new byte[POIFSConstants.PROPERTY_SIZE];
for (int i = 0; i < this._raw_data.Length; i++)
{
this._raw_data[i] = _default_fill;
}
_name_size = new ShortField(_name_size_offset);
_property_type =
new ByteField(PropertyConstants.PROPERTY_TYPE_OFFSET);
_node_color = new ByteField(_node_color_offset);
_previous_property = new IntegerField(_previous_property_offset,
_NO_INDEX, _raw_data);
_next_property = new IntegerField(_next_property_offset,
_NO_INDEX, _raw_data);
_child_property = new IntegerField(_child_property_offset,
_NO_INDEX, _raw_data);
_storage_clsid = new ClassID(_raw_data,_storage_clsid_offset);
_user_flags = new IntegerField(_user_flags_offset, 0, _raw_data);
_seconds_1 = new IntegerField(_seconds_1_offset, 0,
_raw_data);
_days_1 = new IntegerField(_days_1_offset, 0, _raw_data);
_seconds_2 = new IntegerField(_seconds_2_offset, 0,
_raw_data);
_days_2 = new IntegerField(_days_2_offset, 0, _raw_data);
_start_block = new IntegerField(_start_block_offset);
_size = new IntegerField(_size_offset, 0, _raw_data);
_index = _NO_INDEX;
this.Name="";
this.NextChild=null;
this.PreviousChild=null;
}
public void PrivateHeaderBlock(byte[] data)
{
_data = data;
long signature = LittleEndian.GetLong(_data, _signature_offset);
if (signature != _signature)
{
byte[] OOXML_FILE_HEADER = POIFSConstants.OOXML_FILE_HEADER;
if (_data[0] == OOXML_FILE_HEADER[0]
&& _data[1] == OOXML_FILE_HEADER[1]
&& _data[2] == OOXML_FILE_HEADER[2]
&& _data[3] == OOXML_FILE_HEADER[3])
{
throw new OfficeXmlFileException("The supplied data appears to be in the Office 2007+ XML. You are calling the part of POI that deals with OLE2 Office Documents. You need to call a different part of POI to process this data (eg XSSF instead of HSSF)");
}
if ((signature & unchecked((long)0xFF8FFFFFFFFFFFFFL)) == 0x0010000200040009L)
{
throw new ArgumentException("The supplied data appears to be in BIFF2 format. "
+ "POI only supports BIFF8 format");
}
throw new IOException("Invalid header signature; read "
+ LongToHex(signature) + ", expected "
+ LongToHex(_signature));
}
if (_data[30] == 12)
{
bigBlockSize = POIFSConstants.LARGER_BIG_BLOCK_SIZE_DETAILS;
}
else if (_data[30] == 9)
{
bigBlockSize = POIFSConstants.SMALLER_BIG_BLOCK_SIZE_DETAILS;
}
else
{
throw new IOException("Unsupported blocksize (2^" + _data[30] + "). Expected 2^9 or 2^12.");
}
// Setup the fields to read and write the counts and starts
_bat_count = new IntegerField(HeaderBlockConstants._bat_count_offset, _data).Value;
_property_start = new IntegerField(HeaderBlockConstants._property_start_offset, _data).Value;
_sbat_start = new IntegerField(HeaderBlockConstants._sbat_start_offset, _data).Value;
_sbat_count = new IntegerField(HeaderBlockConstants._sbat_block_count_offset, _data).Value;
_xbat_start = new IntegerField(HeaderBlockConstants._xbat_start_offset, _data).Value;
_xbat_count = new IntegerField(HeaderBlockConstants._xbat_count_offset, _data).Value;
}
/// <summary>
/// Constructor from byte data
/// </summary>
/// <param name="index">index number</param>
/// <param name="array">byte data</param>
/// <param name="offset">offset into byte data</param>
protected Property(int index, byte [] array, int offset)
{
_raw_data = new byte[ POIFSConstants.PROPERTY_SIZE ];
System.Array.Copy(array, offset, _raw_data, 0, POIFSConstants.PROPERTY_SIZE);
_name_size = new ShortField(_name_size_offset, _raw_data);
_property_type =
new ByteField(PropertyConstants.PROPERTY_TYPE_OFFSET, _raw_data);
_node_color = new ByteField(_node_color_offset, _raw_data);
_previous_property = new IntegerField(_previous_property_offset,
_raw_data);
_next_property = new IntegerField(_next_property_offset,
_raw_data);
_child_property = new IntegerField(_child_property_offset,
_raw_data);
_storage_clsid = new ClassID(_raw_data,_storage_clsid_offset);
_user_flags = new IntegerField(_user_flags_offset, 0, _raw_data);
_seconds_1 = new IntegerField(_seconds_1_offset, _raw_data);
_days_1 = new IntegerField(_days_1_offset, _raw_data);
_seconds_2 = new IntegerField(_seconds_2_offset, _raw_data);
_days_2 = new IntegerField(_days_2_offset, _raw_data);
_start_block = new IntegerField(_start_block_offset, _raw_data);
_size = new IntegerField(_size_offset, _raw_data);
_index = index;
int name_length = (_name_size.Value / LittleEndianConsts.SHORT_SIZE)
- 1;
if (name_length < 1)
{
_name = "";
}
else
{
char[] char_array = new char[ name_length ];
int name_offset = 0;
for (int j = 0; j < name_length; j++)
{
char_array[ j ] = ( char ) new ShortField(name_offset,
_raw_data).Value;
name_offset += LittleEndianConsts.SHORT_SIZE;
}
_name = new String(char_array, 0, name_length);
}
_next_child = null;
_previous_child = null;
}
