/// <summary>
/// Read from an InputStream and Process the documents we Get
/// </summary>
/// <param name="stream">the InputStream from which to Read the data</param>
/// <returns>POIFSDocument list</returns>
public List<DocumentDescriptor> Read(Stream stream)
{
// Read the header block from the stream
HeaderBlockReader header_block_Reader = new HeaderBlockReader(stream);
// Read the rest of the stream into blocks
RawDataBlockList data_blocks = new RawDataBlockList(stream, header_block_Reader.BigBlockSize);
// Set up the block allocation table (necessary for the
// data_blocks to be manageable
new BlockAllocationTableReader(header_block_Reader.BATCount,
header_block_Reader.BATArray,
header_block_Reader.XBATCount,
header_block_Reader.XBATIndex,
data_blocks);
// Get property table from the document
PropertyTable properties =
new PropertyTable(header_block_Reader.PropertyStart,
data_blocks);
// Process documents
return ProcessProperties(SmallBlockTableReader
.GetSmallDocumentBlocks(data_blocks, properties
.Root, header_block_Reader
.SBATStart), data_blocks, properties.Root
.Children, new POIFSDocumentPath());
}
public void TestConstructors()
{
string[] hexData =
{
"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",
"01 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",
};
byte[] content = RawDataUtil.Decode(hexData);
HeaderBlockReader block = new HeaderBlockReader(new MemoryStream(content));
Assert.AreEqual(-2, block.PropertyStart);
// verify we can't Read a short block
byte[] shortblock = new byte[511];
Array.Copy(content, 0, shortblock, 0, 511);
try
{
block = new HeaderBlockReader(new MemoryStream(shortblock));
Assert.Fail("Should have caught IOException Reading a short block");
}
catch (IOException)
{
// as expected
}
// try various forms of corruption
for (int index = 0; index < 8; index++)
{
content[index] = (byte)(content[index] - 1);
try
{
block = new HeaderBlockReader(new MemoryStream(content));
Assert.Fail("Should have caught IOException corrupting byte " + index);
}
catch (IOException)
{
// as expected
}
// restore byte value
content[index] = (byte)(content[index] + 1);
}
}
/// <summary>
/// Create a POIFSFileSystem from an Stream. Normally the stream is Read until
/// EOF. The stream is always Closed. In the unlikely case that the caller has such a stream and
/// needs to use it after this constructor completes, a work around is to wrap the
/// stream in order to trap the Close() call.
/// </summary>
/// <param name="stream">the Streamfrom which to Read the data</param>
public POIFSFileSystem(Stream stream):this()
{
bool success = false;
HeaderBlockReader header_block_Reader;
RawDataBlockList data_blocks;
try {
// Read the header block from the stream
header_block_Reader = new HeaderBlockReader(stream);
bigBlockSize = header_block_Reader.BigBlockSize;
// Read the rest of the stream into blocks
data_blocks = new RawDataBlockList(stream, bigBlockSize);
success = true;
} finally {
CloseInputStream(stream, success);
}
// Set up the block allocation table (necessary for the
// data_blocks to be manageable
new BlockAllocationTableReader(header_block_Reader.BATCount,
header_block_Reader.BATArray,
header_block_Reader.XBATCount,
header_block_Reader.XBATIndex,
data_blocks);
// Get property table from the document
PropertyTable properties =
new PropertyTable(header_block_Reader.PropertyStart,data_blocks);
// init documents
ProcessProperties(SmallBlockTableReader.GetSmallDocumentBlocks(data_blocks, properties
.Root, header_block_Reader.SBATStart), data_blocks, properties.Root
.Children, null);
}
