/// <summary>
/// Create the BATBlocks we need
/// </summary>
/// <returns>start block index of BAT blocks</returns>
public int CreateBlocks()
{
int xbat_blocks = 0;
int bat_blocks = 0;
while (true)
{
int calculated_bat_blocks =
BATBlock.CalculateStorageRequirements(_bigBlockSize,
bat_blocks
+ xbat_blocks
+ _entries.Count);
int calculated_xbat_blocks =
HeaderBlockWriter.CalculateXBATStorageRequirements(_bigBlockSize, calculated_bat_blocks);
if ((bat_blocks == calculated_bat_blocks) &&
(xbat_blocks == calculated_xbat_blocks))
{
// stable ... we're OK
break;
}
else
{
bat_blocks = calculated_bat_blocks;
xbat_blocks = calculated_xbat_blocks;
}
}
int startBlock = AllocateSpace(bat_blocks);
AllocateSpace(xbat_blocks);
SimpleCreateBlocks();
return(startBlock);
}
public void TestConstructors()
{
//
// TODO: Add test logic here
//
HeaderBlockWriter block = new HeaderBlockWriter(POIFSConstants.SMALLER_BIG_BLOCK_SIZE_DETAILS);
MemoryStream output = new MemoryStream(512);
block.WriteBlocks(output);
byte[] copy = output.ToArray();
string[] expected = {
"D0 CF 11 E0 A1 B1 1A E1 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3B 00 03 00 FE FF 09 00",
"06 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 FE FF FF FF 00 00 00 00 00 10 00 00 FE FF FF FF",
"00 00 00 00 FE FF FF FF 00 00 00 00 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
};
ConfirmEqual(expected, copy);
block.PropertyStart = unchecked((int)0x87654321);
output = new MemoryStream(512);
block.WriteBlocks(output);
Assert.AreEqual(unchecked((int)0x87654321), new HeaderBlockReader(new MemoryStream(output.ToArray())).PropertyStart);
}
public void TestSetBATBlocks()
{
HeaderBlockWriter block = new HeaderBlockWriter(POIFSConstants.SMALLER_BIG_BLOCK_SIZE_DETAILS);
BATBlock[] xbats = block.SetBATBlocks(5, 0x01234567);
Assert.AreEqual(0, xbats.Length);
Assert.AreEqual(0, HeaderBlockWriter.CalculateXBATStorageRequirements(POIFSConstants.SMALLER_BIG_BLOCK_SIZE_DETAILS, 5));
MemoryStream output = new MemoryStream(512);
block.WriteBlocks(output);
byte[] copy = output.ToArray();
string[] expected =
{
"D0 CF 11 E0 A1 B1 1A E1 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3B 00 03 00 FE FF 09 00",
"06 00 00 00 00 00 00 00 00 00 00 00 05 00 00 00 FE FF FF FF 00 00 00 00 00 10 00 00 FE FF FF FF",
"00 00 00 00 FE FF FF FF 00 00 00 00 67 45 23 01 68 45 23 01 69 45 23 01 6A 45 23 01 6B 45 23 01",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF"
};
ConfirmEqual(expected, copy);
block = new HeaderBlockWriter(POIFSConstants.SMALLER_BIG_BLOCK_SIZE_DETAILS);
xbats = block.SetBATBlocks(109, 0x01234567);
Assert.AreEqual(0, xbats.Length);
Assert.AreEqual(0, HeaderBlockWriter.CalculateXBATStorageRequirements(POIFSConstants.SMALLER_BIG_BLOCK_SIZE_DETAILS, 109));
output = new MemoryStream(512);
block.WriteBlocks(output);
copy = output.ToArray();
string[] expected2 =
{
"D0 CF 11 E0 A1 B1 1A E1 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3B 00 03 00 FE FF 09 00",
"06 00 00 00 00 00 00 00 00 00 00 00 6D 00 00 00 FE FF FF FF 00 00 00 00 00 10 00 00 FE FF FF FF",
"00 00 00 00 FE FF FF FF 00 00 00 00 67 45 23 01 68 45 23 01 69 45 23 01 6A 45 23 01 6B 45 23 01",
"6C 45 23 01 6D 45 23 01 6E 45 23 01 6F 45 23 01 70 45 23 01 71 45 23 01 72 45 23 01 73 45 23 01",
"74 45 23 01 75 45 23 01 76 45 23 01 77 45 23 01 78 45 23 01 79 45 23 01 7A 45 23 01 7B 45 23 01",
"7C 45 23 01 7D 45 23 01 7E 45 23 01 7F 45 23 01 80 45 23 01 81 45 23 01 82 45 23 01 83 45 23 01",
"84 45 23 01 85 45 23 01 86 45 23 01 87 45 23 01 88 45 23 01 89 45 23 01 8A 45 23 01 8B 45 23 01",
"8C 45 23 01 8D 45 23 01 8E 45 23 01 8F 45 23 01 90 45 23 01 91 45 23 01 92 45 23 01 93 45 23 01",
"94 45 23 01 95 45 23 01 96 45 23 01 97 45 23 01 98 45 23 01 99 45 23 01 9A 45 23 01 9B 45 23 01",
"9C 45 23 01 9D 45 23 01 9E 45 23 01 9F 45 23 01 A0 45 23 01 A1 45 23 01 A2 45 23 01 A3 45 23 01",
"A4 45 23 01 A5 45 23 01 A6 45 23 01 A7 45 23 01 A8 45 23 01 A9 45 23 01 AA 45 23 01 AB 45 23 01",
"AC 45 23 01 AD 45 23 01 AE 45 23 01 AF 45 23 01 B0 45 23 01 B1 45 23 01 B2 45 23 01 B3 45 23 01",
"B4 45 23 01 B5 45 23 01 B6 45 23 01 B7 45 23 01 B8 45 23 01 B9 45 23 01 BA 45 23 01 BB 45 23 01",
"BC 45 23 01 BD 45 23 01 BE 45 23 01 BF 45 23 01 C0 45 23 01 C1 45 23 01 C2 45 23 01 C3 45 23 01",
"C4 45 23 01 C5 45 23 01 C6 45 23 01 C7 45 23 01 C8 45 23 01 C9 45 23 01 CA 45 23 01 CB 45 23 01",
"CC 45 23 01 CD 45 23 01 CE 45 23 01 CF 45 23 01 D0 45 23 01 D1 45 23 01 D2 45 23 01 D3 45 23 01"
};
ConfirmEqual(expected2, copy);
block = new HeaderBlockWriter(POIFSConstants.SMALLER_BIG_BLOCK_SIZE_DETAILS);
xbats = block.SetBATBlocks(256, 0x01234567);
Assert.AreEqual(2, xbats.Length);
Assert.AreEqual(2, HeaderBlockWriter.CalculateXBATStorageRequirements(POIFSConstants.SMALLER_BIG_BLOCK_SIZE_DETAILS, 256));
output = new MemoryStream(512);
block.WriteBlocks(output);
copy = output.ToArray();
string[] expected3 =
{
"D0 CF 11 E0 A1 B1 1A E1 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3B 00 03 00 FE FF 09 00",
"06 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 FE FF FF FF 00 00 00 00 00 10 00 00 FE FF FF FF",
"00 00 00 00 67 46 23 01 02 00 00 00 67 45 23 01 68 45 23 01 69 45 23 01 6A 45 23 01 6B 45 23 01",
"6C 45 23 01 6D 45 23 01 6E 45 23 01 6F 45 23 01 70 45 23 01 71 45 23 01 72 45 23 01 73 45 23 01",
"74 45 23 01 75 45 23 01 76 45 23 01 77 45 23 01 78 45 23 01 79 45 23 01 7A 45 23 01 7B 45 23 01",
"7C 45 23 01 7D 45 23 01 7E 45 23 01 7F 45 23 01 80 45 23 01 81 45 23 01 82 45 23 01 83 45 23 01",
"84 45 23 01 85 45 23 01 86 45 23 01 87 45 23 01 88 45 23 01 89 45 23 01 8A 45 23 01 8B 45 23 01",
"8C 45 23 01 8D 45 23 01 8E 45 23 01 8F 45 23 01 90 45 23 01 91 45 23 01 92 45 23 01 93 45 23 01",
"94 45 23 01 95 45 23 01 96 45 23 01 97 45 23 01 98 45 23 01 99 45 23 01 9A 45 23 01 9B 45 23 01",
"9C 45 23 01 9D 45 23 01 9E 45 23 01 9F 45 23 01 A0 45 23 01 A1 45 23 01 A2 45 23 01 A3 45 23 01",
"A4 45 23 01 A5 45 23 01 A6 45 23 01 A7 45 23 01 A8 45 23 01 A9 45 23 01 AA 45 23 01 AB 45 23 01",
"AC 45 23 01 AD 45 23 01 AE 45 23 01 AF 45 23 01 B0 45 23 01 B1 45 23 01 B2 45 23 01 B3 45 23 01",
"B4 45 23 01 B5 45 23 01 B6 45 23 01 B7 45 23 01 B8 45 23 01 B9 45 23 01 BA 45 23 01 BB 45 23 01",
"BC 45 23 01 BD 45 23 01 BE 45 23 01 BF 45 23 01 C0 45 23 01 C1 45 23 01 C2 45 23 01 C3 45 23 01",
"C4 45 23 01 C5 45 23 01 C6 45 23 01 C7 45 23 01 C8 45 23 01 C9 45 23 01 CA 45 23 01 CB 45 23 01",
"CC 45 23 01 CD 45 23 01 CE 45 23 01 CF 45 23 01 D0 45 23 01 D1 45 23 01 D2 45 23 01 D3 45 23 01"
};
ConfirmEqual(expected3, copy);
output = new MemoryStream(1028);
xbats[0].WriteBlocks(output);
xbats[1].WriteBlocks(output);
copy = output.ToArray();
int correct = 0x012345D4;
int offset = 0;
int k = 0;
for (; k < 127; k++)
{
Assert.AreEqual(correct,
LittleEndian.GetInt(copy, offset), "XBAT entry " + k);
correct++;
offset += LittleEndianConsts.INT_SIZE;
}
Assert.AreEqual(0x01234567 + 257,
LittleEndian.GetInt(copy, offset), "XBAT Chain");
offset += LittleEndianConsts.INT_SIZE;
k++;
for (; k < 148; k++)
{
Assert.AreEqual(correct,
LittleEndian.GetInt(copy, offset), "XBAT entry " + k);
correct++;
offset += LittleEndianConsts.INT_SIZE;
}
for (; k < 255; k++)
{
Assert.AreEqual(-1,
LittleEndian.GetInt(copy, offset), "XBAT entry " + k);
offset += LittleEndianConsts.INT_SIZE;
}
Assert.AreEqual(-2,
LittleEndian.GetInt(copy, offset), "XBAT End of chain");
}
public void TestSetPropertyStart()
{
HeaderBlockWriter block = new HeaderBlockWriter(POIFSConstants.SMALLER_BIG_BLOCK_SIZE_DETAILS);
block.PropertyStart = 0x01234567;
MemoryStream output = new MemoryStream(512);
block.WriteBlocks(output);
byte[] copy = output.ToArray();
string[] expected =
{
"D0 CF 11 E0 A1 B1 1A E1 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3B 00 03 00 FE FF 09 00",
"06 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 67 45 23 01 00 00 00 00 00 10 00 00 FE FF FF FF",
"00 00 00 00 FE FF FF FF 00 00 00 00 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
"FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF",
};
ConfirmEqual(expected, copy);
}
/// <summary>
/// Writes the file system.
/// </summary>
/// <param name="stream">the OutputStream to which the filesystem will be
/// written</param>
public void WriteFileSystem(Stream stream)
{
// Get the property table Ready
_property_table.PreWrite();
// Create the small block store, and the SBAT
SmallBlockTableWriter sbtw =
new SmallBlockTableWriter(bigBlockSize,_documents, _property_table.Root);
// Create the block allocation table
BlockAllocationTableWriter bat =
new BlockAllocationTableWriter(bigBlockSize);
// Create a list of BATManaged objects: the documents plus the
// property table and the small block table
ArrayList bm_objects = new ArrayList();
bm_objects.AddRange(_documents);
bm_objects.Add(_property_table);
bm_objects.Add(sbtw);
bm_objects.Add(sbtw.SBAT);
// walk the list, allocating space for each and assigning each
// a starting block number
IEnumerator iter = bm_objects.GetEnumerator();
while (iter.MoveNext())
{
BATManaged bmo = ( BATManaged ) iter.Current;
int block_count = bmo.CountBlocks;
if (block_count != 0)
{
bmo.StartBlock=bat.AllocateSpace(block_count);
}
else
{
// Either the BATManaged object is empty or its data
// is composed of SmallBlocks; in either case,
// allocating space in the BAT is inappropriate
}
}
// allocate space for the block allocation table and take its
// starting block
int batStartBlock = bat.CreateBlocks();
// Get the extended block allocation table blocks
HeaderBlockWriter header_block_Writer = new HeaderBlockWriter(bigBlockSize);
BATBlock[] xbat_blocks =
header_block_Writer.SetBATBlocks(bat.CountBlocks,
batStartBlock);
// Set the property table start block
header_block_Writer.PropertyStart=_property_table.StartBlock;
// Set the small block allocation table start block
header_block_Writer.SBATStart=sbtw.SBAT.StartBlock;
// Set the small block allocation table block count
header_block_Writer.SBATBlockCount=sbtw.SBATBlockCount;
// the header is now properly initialized. Make a list of
// Writers (the header block, followed by the documents, the
// property table, the small block store, the small block
// allocation table, the block allocation table, and the
// extended block allocation table blocks)
ArrayList Writers = new ArrayList();
Writers.Add(header_block_Writer);
Writers.AddRange(_documents);
Writers.Add(_property_table);
Writers.Add(sbtw);
Writers.Add(sbtw.SBAT);
Writers.Add(bat);
for (int j = 0; j < xbat_blocks.Length; j++)
{
Writers.Add(xbat_blocks[j]);
}
// now, Write everything out
iter = Writers.GetEnumerator();
while (iter.MoveNext())
{
BlockWritable Writer = ( BlockWritable ) iter.Current;
Writer.WriteBlocks(stream);
}
Writers=null;
iter = null;
}
/**
* Has our in-memory objects write their state
* to their backing blocks
*/
private void syncWithDataSource()
{
// Properties
NPOIFSStream propStream = new NPOIFSStream(this, _header.PropertyStart);
_property_table.PreWrite();
_property_table.Write(propStream);
// _header.setPropertyStart has been updated on write ...
// HeaderBlock
HeaderBlockWriter hbw = new HeaderBlockWriter(_header);
hbw.WriteBlock(GetBlockAt(-1));
// BATs
foreach (BATBlock bat in _bat_blocks)
{
ByteBuffer block = GetBlockAt(bat.OurBlockIndex);
//byte[] block = GetBlockAt(bat.OurBlockIndex);
BlockAllocationTableWriter.WriteBlock(bat, block);
}
// XBats
foreach (BATBlock bat in _xbat_blocks)
{
ByteBuffer block = GetBlockAt(bat.OurBlockIndex);
BlockAllocationTableWriter.WriteBlock(bat, block);
}
// SBATs
_mini_store.SyncWithDataSource();
}