public unsafe void Open(BinaryReader reader)
{
uint magic = reader.ReadUInt32();
//CanSeekの時のみストリーム長のチェック
if (reader.BaseStream.CanSeek && reader.BaseStream.Length != (magic ^ DictionaryMagicID))
{
throw new MeCabInvalidFileException("dictionary file is broken", this.FileName);
}
this.Version = reader.ReadUInt32();
if (this.Version != DicVersion)
{
throw new MeCabInvalidFileException("incompatible version", this.FileName);
}
this.Type = (DictionaryType)reader.ReadUInt32();
this.LexSize = reader.ReadUInt32();
this.LSize = reader.ReadUInt32();
this.RSize = reader.ReadUInt32();
uint dSize = reader.ReadUInt32();
uint tSize = reader.ReadUInt32();
uint fSize = reader.ReadUInt32();
reader.ReadUInt32(); //dummy
string charSet = StrUtils.GetString(reader.ReadBytes(32), Encoding.ASCII);
this.encoding = StrUtils.GetEncoding(charSet);
this.da.Open(reader, dSize);
this.tokens = new Token[tSize / sizeof(Token)];
for (int i = 0; i < this.tokens.Length; i++)
{
this.tokens[i] = Token.Create(reader);
}
this.features = reader.ReadBytes((int)fSize);
if (reader.BaseStream.ReadByte() != -1)
{
throw new MeCabInvalidFileException("dictionary file is broken", this.FileName);
}
}
public void Open(MemoryMappedFile mmf, string filePath = null)
{
this.FileName = filePath;
using (MemoryMappedViewStream stream = mmf.CreateViewStream(
0L, 0L, MemoryMappedFileAccess.Read))
using (BinaryReader reader = new BinaryReader(stream))
{
uint magic = reader.ReadUInt32();
if (stream.CanSeek && stream.Length < (magic ^ DictionaryMagicID)) //正確なサイズ取得ができないので不等号で代用
{
throw new MeCabInvalidFileException("dictionary file is broken", filePath);
}
this.Version = reader.ReadUInt32();
if (this.Version != DicVersion)
{
throw new MeCabInvalidFileException("incompatible version", filePath);
}
this.Type = (DictionaryType)reader.ReadUInt32();
this.LexSize = reader.ReadUInt32();
this.LSize = reader.ReadUInt32();
this.RSize = reader.ReadUInt32();
uint dSize = reader.ReadUInt32();
uint tSize = reader.ReadUInt32();
uint fSize = reader.ReadUInt32();
reader.ReadUInt32(); //dummy
string charSet = StrUtils.GetString(reader.ReadBytes(32), Encoding.ASCII);
this.encoding = StrUtils.GetEncoding(charSet);
long offset = stream.Position;
this.da.Open(mmf, offset, dSize);
offset += dSize;
this.tokens = mmf.CreateViewAccessor(offset, tSize, MemoryMappedFileAccess.Read);
offset += tSize;
this.features = mmf.CreateViewAccessor(offset, fSize, MemoryMappedFileAccess.Read);
}
}