private void UpdateToc()
{
//Open buffer for all objects
byte[] objectTocBuffer = new byte[TOC_ENTRY_LENGTH * objects.Count];
BufferBinaryTool writer = new BufferBinaryTool(objectTocBuffer);
//Add all
for (int i = 0; i < objects.Count; i += 1)
{
int offset = TOC_ENTRY_LENGTH * i;
writer.WriteUInt64(offset + 0, objects[i].object_id);
writer.WriteUInt64(offset + 8, objects[i].page_id);
writer.WriteUInt64(offset + 16, objects[i].commit_id);
writer.WriteInt32(offset + 24, objects[i].group_id);
objectTocBuffer[offset + 28] = objects[i].commit_type;
objectTocBuffer[offset + 29] = objects[i].flags;
writer.WriteUInt16(offset + 30, objects[i].reserved);
}
//Add or update
if (tocPage == -1)
{
tocPage = file.WriteNewBlob(PAGE_TYPE_TOC, objectTocBuffer);
}
else
{
tocPage = file.UpdateBlob(tocPage, PAGE_TYPE_TOC, objectTocBuffer);
}
}
public static ContentDatabaseSession OpenDatabase(string path)
{
//Open file
DatabaseFile file = DatabaseFile.LoadFile(path);
//Open DB
var db = new ContentDatabaseSession(file);
//Read TOC
if (db.tocPage != -1)
{
//Read blob
byte[] tocBytes = file.ReadBlob(db.tocPage);
int count = tocBytes.Length / TOC_ENTRY_LENGTH;
BufferBinaryTool reader = new BufferBinaryTool(tocBytes);
//Add all
for (int i = 0; i < count; i++)
{
int offset = TOC_ENTRY_LENGTH * i;
DatabaseObjectHeader entry = new DatabaseObjectHeader();
entry.object_id = reader.ReadUInt64(offset + 0);
entry.page_id = reader.ReadUInt64(offset + 8);
entry.commit_id = reader.ReadUInt64(offset + 16);
entry.group_id = reader.ReadInt32(offset + 24);
entry.commit_type = tocBytes[offset + 28];
entry.flags = tocBytes[offset + 29];
entry.reserved = reader.ReadUInt16(offset + 30);
db.objects.Add(entry);
}
}
//Read Name Table
if (db.nameTablePage != -1)
{
//Read blob
byte[] ntBytes = file.ReadBlob(db.nameTablePage);
BufferBinaryTool reader = new BufferBinaryTool(ntBytes);
//Begin reading
int index = 0;
while (index < ntBytes.Length)
{
//Read length
int length = reader.ReadInt32(index);
//Read string
db.nameTable.Add(Encoding.ASCII.GetString(ntBytes, index + 4, length));
//Update
index += length + 4;
}
}
return(db);
}
private void UpdateNameTable()
{
//Calculate the length of the name table
int nameTableLength = 0;
foreach (var n in nameTable)
{
nameTableLength += Encoding.ASCII.GetByteCount(n) + 4;
}
//Open buffer
byte[] buffer = new byte[nameTableLength];
BufferBinaryTool writer = new BufferBinaryTool(buffer);
//Write
int byteIndex = 0;
foreach (var n in nameTable)
{
byte[] nameBytes = Encoding.ASCII.GetBytes(n);
nameBytes.CopyTo(buffer, byteIndex + 4);
writer.WriteInt32(byteIndex, nameBytes.Length);
byteIndex += nameBytes.Length + 4;
}
//Add or update
if (nameTablePage == -1)
{
nameTablePage = file.WriteNewBlob(PAGE_TYPE_NAMETABLE, buffer);
}
else
{
nameTablePage = file.UpdateBlob(nameTablePage, PAGE_TYPE_NAMETABLE, buffer);
}
//Set flag
nameTableDirty = false;
}
