private Dictionary <string, string> readFile(string fileName)
{
var header = new TblHeader();
var hashNodes = new List <TblHashNode>();
var nodes = new Dictionary <string, string>();
using (var fs = Resources.Instance.OpenResource(fileName))
using (var br = new BinaryReader(fs))
{
// read header
header.CRC = br.ReadInt16();
header.NodesNumber = br.ReadInt16();
header.HashTableSize = br.ReadInt32();
header.Version = br.ReadByte();
header.DataStartOffset = br.ReadInt32();
header.HashMaxTries = br.ReadInt32();
header.FileSize = br.ReadInt32();
// skip indices
fs.Seek(header.NodesNumber * sizeof(short), SeekOrigin.Current); // 2 - sizeof short
// read hashes
for (var i = 0; i < header.HashTableSize; i++)
{
var hNode = new TblHashNode();
hNode.Active = br.ReadByte();
hNode.Index = br.ReadInt16();
hNode.HashValue = br.ReadInt32();
hNode.StringKeyOffset = br.ReadInt32();
hNode.StringValOffset = br.ReadInt32();
hNode.StringValLength = br.ReadInt16();
hashNodes.Add(hNode);
}
// read data
for (var i = 0; i < header.HashTableSize; i++)
{
// entry is not used, i.e. it's deleted
if (hashNodes[i].Active == 0)
{
continue;
}
fs.Position = hashNodes[i].StringKeyOffset;
var key = Encoding.ASCII.GetString(br.ReadBytes(hashNodes[i].StringValOffset - hashNodes[i].StringKeyOffset)).TrimEnd('\0');
var val = Encoding.ASCII.GetString(br.ReadBytes(hashNodes[i].StringValLength)).TrimEnd('\0');
// ignore collisions
// FIXME: may be replace?
nodes.TryAdd(key, val);
}
}
return(nodes);
}
private static Dictionary <string, string> GetStringTable(BinaryReader br, TblHeader header)
{
var result = new Dictionary <string, string>();
var tableList = new List <TableList>();
br.BaseStream.Position += header.NodesNumber * sizeof(ushort);
var hashNodes = new List <TblHashNode>();
for (uint i = 0; i < header.HashTableSize; i++)
{
hashNodes.Add(GetHashNode(br));
}
br.BaseStream.Position = 0;
var byteArray = ReadAllBytes(br);
foreach (var hashNode in hashNodes)
{
if (hashNode.Active == 0)
{
continue;
}
else if (hashNode.Active != 1)
{
continue;
}
string val = null;
string key;
val = Encoding.UTF8.GetString(byteArray, (int)hashNode.StringValOffset, hashNode.StringValLength).Trim('\0');
key = Encoding.UTF8.GetString(byteArray, (int)hashNode.StringKeyOffset, (int)hashNode.StringValOffset - (int)hashNode.StringKeyOffset).Trim('\0');
tableList.Add(new TableList {
Key = key, Value = val ?? "", Index = hashNode.Index
});
}
tableList = tableList.OrderBy(x => x.Index).ToList();
foreach (var tableValue in tableList)
{
result[tableValue.Key] = tableValue.Value;
}
return(result);
}
