121 lines
2.5 KiB
C#
121 lines
2.5 KiB
C#
using System;
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using System.Collections;
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using System.IO;
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using System.Text;
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namespace BinLogReader
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{
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/// <summary>
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/// Aggregates plugin information
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/// </summary>
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public class PluginDb
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{
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private static uint BINDB_MAGIC = 0x414D4244;
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private static short BINDB_VERSION = 0x0100;
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private ArrayList PluginList;
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public int Count
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{
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get
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{
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return PluginList.Count;
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}
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}
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public PluginDb(uint plugins)
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{
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PluginList = new ArrayList((int)plugins);
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}
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public Plugin GetPluginById(ushort id)
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{
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return GetPluginById((int)id);
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}
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public Plugin GetPluginById(int id)
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{
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if (id < 0 || id >= PluginList.Count)
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return null;
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return (Plugin)PluginList[id];
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}
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public static PluginDb FromFile(string filename)
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{
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if (!File.Exists(filename))
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return null;
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System.IO.FileStream stream = File.Open(filename, System.IO.FileMode.Open);
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if (stream == null)
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return null;
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BinaryReader br = new BinaryReader(stream);
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if (br == null)
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return null;
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PluginDb db;
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try
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{
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//check header
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uint magic = br.ReadUInt32();
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if (magic != BINDB_MAGIC)
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throw new Exception("Invalid magic DB number");
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//check version
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ushort vers = br.ReadUInt16();
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if (vers > BINDB_VERSION)
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throw new Exception("Unknown DB version");
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//read plugins
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uint plugins = br.ReadUInt32();
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db = new PluginDb(plugins);
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for (uint i=0; i<plugins; i++)
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{
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byte status = br.ReadByte();
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byte length = br.ReadByte();
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byte [] name = br.ReadBytes(length + 1);
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uint natives = br.ReadUInt32();
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uint publics = br.ReadUInt32();
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int id = db.CreatePlugin(
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Encoding.ASCII.GetString(name, 0, length),
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(int)natives,
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(int)publics,
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status,
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(int)i);
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Plugin pl = db.GetPluginById(id);
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for (uint j=0; j<natives; j++)
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{
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length = br.ReadByte();
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name = br.ReadBytes(length + 1);
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pl.AddNative(Encoding.ASCII.GetString(name, 0, length));
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}
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for (uint j=0; j<publics; j++)
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{
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length = br.ReadByte();
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name = br.ReadBytes(length + 1);
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pl.AddPublic(Encoding.ASCII.GetString(name, 0, length));
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}
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}
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}
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catch
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{
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db = null;
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throw new Exception("DB file is corrupt");
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}
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finally
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{
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br.Close();
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stream.Close();
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GC.Collect();
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}
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return db;
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}
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private int CreatePlugin(string file, int natives, int publics, byte status, int index)
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{
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Plugin pl = new Plugin(file, natives, publics, status, index);
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PluginList.Add(pl);
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return PluginList.Count - 1;
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}
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}
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}
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