internal void Read(PdbReader reader, int position,
byte[] bytes, int offset, int data)
{
if (position + data > contentSize)
{
throw new PdbException("DataStream can't read off end of stream. " +
"(pos={0},siz={1})",
position, data);
}
if (position == contentSize)
{
return;
}
int left = data;
int page = position / reader.pageSize;
int rema = position % reader.pageSize;
// First get remained of first page.
if (rema != 0)
{
int todo = reader.pageSize - rema;
if (todo > left)
{
todo = left;
}
reader.Seek(pages[page], rema);
reader.Read(bytes, offset, todo);
offset += todo;
left -= todo;
page++;
}
// Now get the remaining pages.
while (left > 0)
{
int todo = reader.pageSize;
if (todo > left)
{
todo = left;
}
reader.Seek(pages[page], 0);
reader.Read(bytes, offset, todo);
offset += todo;
left -= todo;
page++;
}
}
internal void Read(PdbReader reader, int position,
byte[] bytes, int offset, int data) {
if (position + data > contentSize) {
throw new PdbException("DataStream can't read off end of stream. " +
"(pos={0},siz={1})",
position, data);
}
if (position == contentSize) {
return;
}
int left = data;
int page = position / reader.pageSize;
int rema = position % reader.pageSize;
// First get remained of first page.
if (rema != 0) {
int todo = reader.pageSize - rema;
if (todo > left) {
todo = left;
}
reader.Seek(pages[page], rema);
reader.Read(bytes, offset, todo);
offset += todo;
left -= todo;
page++;
}
// Now get the remaining pages.
while (left > 0) {
int todo = reader.pageSize;
if (todo > left) {
todo = left;
}
reader.Seek(pages[page], 0);
reader.Read(bytes, offset, todo);
offset += todo;
left -= todo;
page++;
}
}
internal MsfDirectory(PdbReader reader, PdbFileHeader head, BitAccess bits)
{
bits.MinCapacity(head.directorySize);
int pages = reader.PagesFromSize(head.directorySize);
// 0..n in page of directory pages.
reader.Seek(head.directoryRoot, 0);
bits.FillBuffer(reader.reader, pages * 4);
DataStream stream = new DataStream(head.directorySize, bits, pages);
bits.MinCapacity(head.directorySize);
stream.Read(reader, bits);
// 0..3 in directory pages
int count;
bits.ReadInt32(out count);
// 4..n
int[] sizes = new int[count];
bits.ReadInt32(sizes);
// n..m
streams = new DataStream[count];
for (int i = 0; i < count; i++)
{
if (sizes[i] <= 0)
{
streams[i] = new DataStream();
}
else
{
streams[i] = new DataStream(sizes[i], bits,
reader.PagesFromSize(sizes[i]));
}
}
}