public static List <MetaExtent> get_edb(FileStream stream, Table header, UInt64 block_num)
{
List <MetaExtent> edb = new List <MetaExtent>();
TableType[] table_info = Table.save_record(stream, block_num, header);
// Console.WriteLine("----edb record num : {0}------", header.record_num);
// Console.WriteLine("----edb table_type : {0}------", header.table_type);
for (int i = 0; i < header.record_num; i++)
{
MetaExtent e = new MetaExtent();
int start, len;
string key = table_info[i].KeySection;
string data = table_info[i].DataSection;
start = 0;
len = 7;
e.block_num_start = Utility.little_hex_to_uint64(key.Substring(start, 2 * len), len);
start += 2 * len;
len = 1;
e.datatype = (int)Utility.little_hex_to_uint64(key.Substring(start, 2 * len), len);
start = 0;
len = 7;
e.blocks_in_extent = Utility.little_hex_to_uint64(data.Substring(start, 2 * len), len);
start += 2 * len + 2;
len = 8;
e.NodeID = Utility.little_hex_to_uint64(data.Substring(start, 2 * len), len);
edb.Add(e);
}
return(edb);
}
public UInt64 blockNum_to_extent; //block number of edb
//static void Main()
//{
// using (FileStream fs = new FileStream(@"/Users/yang-yejin/Desktop/file_info/han.dmg", FileMode.Open))
// {
// CSB.TotalSize = (UInt64)fs.Length;
// CSB.BlockSize = 4096;
// CSB.MSB_Address = 20480;
// // CSB csb = CSB.init_csb(fs, 0);
// Console.WriteLine("Start");
// init(fs, 96);
// Console.WriteLine("Fin");
// }
// //using (FileStream fs = new FileStream(@"/Users/yang-yejin/Desktop/file_info/noname.dmg", FileMode.Open))
// //{
// // CSB.TotalSize = (UInt64)fs.Length;
// // CSB.BlockSize = 4096;
// // CSB.MSB_Address = 209735680;
// // // CSB csb = CSB.init_csb(fs, 0);
// // Console.WriteLine("Start");
// // init(fs, 421559);
// // Console.WriteLine("Fin");
// //}
//}
public static void init(FileStream stream, UInt64 block_num)
{
Table header = Table.get_table_header(stream, block_num);
edbList = new List <MetaExtent>();
//Console.WriteLine("extent block address : {0}", Utility.get_address(block_num));
//Console.WriteLine("record_num : {0}", header.record_num);
//Console.WriteLine("table type : {0}", header.table_type);
if (header.table_type == 1) //EIB
{
MetaExtent[] eib = new MetaExtent[header.record_num];
eib = get_eib(stream, header, block_num);
foreach (MetaExtent e in eib)
{
UInt64 edb_blockNum = e.blockNum_to_extent;
header = Table.get_table_header(stream, edb_blockNum);
edbList = get_edb(stream, header, edb_blockNum);
//Console.WriteLine("edb block_num: {0}, {1}", edb_blockNum, Utility.get_address(edb_blockNum));
//int i = 0;
//foreach (MetaExtent a in edb)
//{
// Console.WriteLine(i++);
// Console.WriteLine("block_num_start : {0}, {1}", a.block_num_start, Utility.get_address(a.block_num_start));
// Console.WriteLine("datatype : {0}", a.datatype);
// Console.WriteLine("blocks_in_extent : {0}", a.blocks_in_extent);
// Console.WriteLine("NodeID : {0}\n\n", a.NodeID);
//}
if (edbList != null)
{
edbList.AddRange(edbList);
}
}
}
else
{
UInt64 edb_blockNum = block_num;
header = Table.get_table_header(stream, edb_blockNum);
edbList = get_edb(stream, header, edb_blockNum);
//foreach (MetaExtent a in edb)
//{
// Console.WriteLine("block_num_start : {0}, {1}", a.block_num_start, Utility.get_address(a.block_num_start));
// Console.WriteLine("datatype : {0}", a.datatype);
// Console.WriteLine("blocks_in_extent : {0}", a.blocks_in_extent);
// Console.WriteLine("NodeID : {0}, 0x{1}\n\n", a.NodeID, a.NodeID.ToString("X"));
//}
if (edbList != null)
{
edbList.AddRange(edbList);
}
}
}
public static MetaExtent[] get_eib(FileStream stream, Table header, UInt64 block_num)
{
MetaExtent[] eib = new MetaExtent[header.record_num];
TableType[] table_info = Table.save_record(stream, block_num, header);
for (int i = 0; i < header.record_num; i++)
{
eib[i] = new MetaExtent();
string key = table_info[i].IndexKey;
int start = 0;
int len = 6;
eib[i].lowest_block_start = Utility.little_hex_to_uint64(key.Substring(start, 2 * len), len);
eib[i].blockNum_to_extent = table_info[i].Node_ID;
//Console.WriteLine(i);
//Console.WriteLine("lowest block# start : {0}, {1}", eib[i].lowest_block_start, Utility.get_address(eib[i].lowest_block_start));
//Console.WriteLine("blockNum to Extent : {0}, {1}", eib[i].blockNum_to_extent, Utility.get_address(eib[i].blockNum_to_extent));
}
return(eib);
}
