/// <summary>
/// </summary>
/// <param name="reader">
/// </param>
/// <param name="bits">
/// </param>
internal PdbFileHeader(Stream reader, BitAccess bits)
{
bits.MinCapacity(56);
reader.Seek(0, SeekOrigin.Begin);
bits.FillBuffer(reader, 56);
this.magic = new byte[32];
bits.ReadBytes(this.magic); // 0..31
bits.ReadInt32(out this.pageSize); // 32..35
bits.ReadInt32(out this.freePageMap); // 36..39
bits.ReadInt32(out this.pagesUsed); // 40..43
bits.ReadInt32(out this.directorySize); // 44..47
bits.ReadInt32(out this.zero); // 48..51
bits.ReadInt32(out this.directoryRoot); // 52..55
}
/// <summary>
/// </summary>
/// <param name="reader">
/// </param>
/// <param name="bits">
/// </param>
internal void Read(PdbReader reader, BitAccess bits)
{
bits.MinCapacity(this.contentSize);
this.Read(reader, 0, bits.Buffer, 0, this.contentSize);
}
/// <summary>
/// </summary>
/// <param name="streams">
/// </param>
/// <param name="directoryRoot">
/// </param>
/// <param name="directorySize">
/// </param>
/// <param name="bits">
/// </param>
private void WriteDirectory(DataStream[] streams, out int directoryRoot, out int directorySize, BitAccess bits)
{
var directory = new DataStream();
var pages = 0;
for (var s = 0; s < streams.Length; s++)
{
if (streams[s].Length > 0)
{
pages += streams[s].Pages;
}
}
var use = 4 * (1 + streams.Length + pages);
bits.MinCapacity(use);
bits.WriteInt32(streams.Length);
for (var s = 0; s < streams.Length; s++)
{
bits.WriteInt32(streams[s].Length);
}
for (var s = 0; s < streams.Length; s++)
{
if (streams[s].Length > 0)
{
bits.WriteInt32(streams[s].pages);
}
}
directory.Write(this, bits.Buffer, use);
directorySize = directory.Length;
use = 4 * directory.Pages;
bits.MinCapacity(use);
bits.WriteInt32(directory.pages);
var ddir = new DataStream();
ddir.Write(this, bits.Buffer, use);
directoryRoot = ddir.pages[0];
}
/// <summary>
/// </summary>
/// <param name="writer">
/// </param>
/// <param name="bits">
/// </param>
internal void Write(Stream writer, BitAccess bits)
{
bits.MinCapacity(56);
bits.WriteBytes(this.magic); // 0..31
bits.WriteInt32(this.pageSize); // 32..35
bits.WriteInt32(this.freePageMap); // 36..39
bits.WriteInt32(this.pagesUsed); // 40..43
bits.WriteInt32(this.directorySize); // 44..47
bits.WriteInt32(this.zero); // 48..51
bits.WriteInt32(this.directoryRoot); // 52..55
writer.Seek(0, SeekOrigin.Begin);
bits.WriteBuffer(writer, 56);
}