private static int OrderStreamsByLengthForPdbPartial(PdbPartialStream leftStream, PdbPartialStream rightStream)
{
//TODO Make A Static Sorter Class And Move Into It
return(rightStream.DecompossedPartialStream.Length.CompareTo(leftStream.DecompossedPartialStream.Length));
}
/// <summary>
/// This Method Reads The Root Byte Pages, Composes The Root Stream, Extracts The Streams From The RootStream And Composes And Exposes Them Out.
/// </summary>
/// <param name="mainStream">The PdbStream That Will Be Extracted</param>
/// <param name="adIndexPages"></param>
/// <param name="sizeForRootIndexBytes"></param>
/// <remarks>
/// </remarks>
/// <returns></returns>
private bool BuildUpRootStream(System.IO.Stream mainStream,
List <uint> adIndexPages,
uint sizeForRootIndexBytes)
{
// There seems to be a bug, will be fixed now
//Reads Whole Bytes That Buildup The Root Stream
System.IO.MemoryStream rootStream =
ReadBlockBytesFromStream(mainStream,
adIndexPages,
sizeForRootIndexBytes);
System.IO.MemoryStream rootStreamComposed =
new System.IO.MemoryStream();
UInt32 totalSizes = this.m_dRootBytes;
int totalCount = 0;
using (BinaryReader rootStreamReader =
new BinaryReader(rootStream))
{
//Composes The Root Stream From The Found Out Pages
while ((rootStream.Position + 1) < rootStream.Length)
{
totalCount++;
byte[] firstPageData2 =
new byte[m_dPageBytes];
uint targetPage =
rootStreamReader.ReadUInt32();
m_rootStreamTargetPages.Add(targetPage * m_dPageBytes);
mainStream.Seek((targetPage * m_dPageBytes), SeekOrigin.Begin);
int tempReadedAmount =
mainStream.Read(firstPageData2, 0, (int)m_dPageBytes);
uint currentPosition =
BitConverter.ToUInt32(firstPageData2, 0);
if (totalSizes < tempReadedAmount)
{
tempReadedAmount = (int)totalSizes;
}
else
{
totalSizes -= (uint)tempReadedAmount;
}
rootStreamComposed.Write(firstPageData2, 0, tempReadedAmount);
}
}
rootStreamComposed.Position = 0;
m_rootStream =
new MemoryStream(rootStreamComposed.ToArray());
m_rootStreamContainer =
new MemoryStream();
rootStreamComposed.WriteTo(m_rootStreamContainer);
Debug.Assert(m_dRootBytes == rootStreamComposed.Length, "Base Transfer Failed");
// Ok Now We have the root directory stream
// Go Read Each Of The ChildStreams And Compose Them To MemoryStreams :)
using (BinaryReader testReader = new BinaryReader(rootStreamComposed))
{
//Ok First DWORD In The Stream Is The Count Of The Whole Streams Including BaseStream
StreamCount = testReader.ReadUInt32();
Debug.WriteLine("Total Streams Contained:", StreamCount.ToString());
///Here are the sizes for each of the separated stream sizes
for (uint streamCounter = 0;
streamCounter < StreamCount;
streamCounter++)
{
PdbPartialStream partialStream =
new PdbPartialStream(this.m_dPageBytes);
partialStream.InitialSize =
testReader.ReadUInt32();
partialStream.StreamLocation =
streamCounter;
StreamLengths.Add(streamCounter,
partialStream.InitialSize);
m_partialStreamDirectory.Add(streamCounter,
partialStream);
}
///Build up the streams using the pages located here
for (uint subDetailCounter = 0;
subDetailCounter < StreamCount;
subDetailCounter++)
{
uint streamLength =
StreamLengths[subDetailCounter];
PdbPartialStream partialStream =
m_partialStreamDirectory[subDetailCounter];
uint pageCountToBeReaded =
CalculateDWORDCountForRootIndex(streamLength);
List <uint> wholeAddresses =
new List <uint>();
System.IO.MemoryStream finalStream =
new System.IO.MemoryStream();
if (streamLength == 0 || streamLength == pdbEmptyStreamHeader)
{
pageCountToBeReaded = 0;
}
partialStream.RootStreamBeginIndex =
(uint)testReader.BaseStream.Position;
bool shouldExit = false;
if ((testReader.BaseStream.Position + 1) < testReader.BaseStream.Length)
{
for (int pageCounter = 0;
pageCounter < pageCountToBeReaded;
pageCounter++)
{
byte[] finalStreamDataContainer =
new byte[m_dPageBytes];
uint currentStreamSourcePage =
testReader.ReadUInt32();
partialStream.PagesUsedByStream.Add(currentStreamSourcePage);
mainStream.Seek((currentStreamSourcePage * m_dPageBytes),
SeekOrigin.Begin);
int streamSourcePagesRead =
mainStream.Read(finalStreamDataContainer, 0, (int)m_dPageBytes);
uint currentPositionStreamBegin =
BitConverter.ToUInt32(finalStreamDataContainer, 0);
if (streamLength < streamSourcePagesRead)
{
streamSourcePagesRead = (int)streamLength;
shouldExit = true;
}
else
{
streamLength -= (uint)streamSourcePagesRead;
}
finalStream.Write(finalStreamDataContainer, 0, streamSourcePagesRead);
if (shouldExit)
{
break;
}
}
}
partialStream.BuildUpDecomposedPartialStream(mainStream);
if (InternalStreams.Count == 1)
{
m_Reader =
new PdbInfoStreamReader(partialStream.DecompossedPartialStream);
m_Reader.ParseStream();
}
InternalStreams.Add(partialStream.DecompossedPartialStream);
StreamDictionary.Add(subDetailCounter, partialStream.DecompossedPartialStream);
}
}
return(true);
}
