public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture,
object value, Type destinationType)
{
if (destinationType == typeof(String))
{
if (value is KwIndex2)
{
KwIndex2 so = (KwIndex2)value;
return(string.Format("{0}", so));
}
if (value is KwIndex1)
{
KwIndex1 so = (KwIndex1)value;
return(string.Format("{0}", so));
}
if (value is KwIndex2List)
{
KwIndex2List so = (KwIndex2List)value;
return(string.Format("{1} items", 0, so.Count));
}
if (value is KwIndexList)
{
KwIndexList so = (KwIndexList)value;
return(string.Format("{1} items", 0, so.Count));
}
}
return(base.ConvertTo(context, culture, value, destinationType));
}
private KwIndex2List readLevel2Block(int idx, KwIndex1 kw1, Stream fs)
{
var pos = Seg2BeginPos;
// ulong unzipped = 0;
for (var kwiIdx = 0; kwiIdx < idx; kwiIdx++)
{
var kwi = _seg1.IndexList[kwiIdx];
pos += kwi.CompressedSize;
// unzipped += kwi.UncompressedSize;
// Console.WriteLine(
// $"seg 1, block {kwiIdx}, end pos = {pos}/0x{pos:X8} | unzipped offset: {unzipped} | kwi = {kwi}");
}
// Console.WriteLine($"seg 1, block {idx}, start pos = {pos}/0x{pos:X8} | kwi = {kw1}");
var list2 = new KwIndex2List();
fs.Seek((long)pos, SeekOrigin.Begin);
var magicNum = readUInt32(fs);
var j2 = readUInt32(fs);
var rawData = new byte[kw1.CompressedSize - 8];
fs.Read(rawData, 0, rawData.Length);
if (magicNum == 0x02000000)
{
#region InflaterDecompress
try
{
// var txt = CompressUtil.InflaterDecompress(rawData, 0, rawData.Length, false);
// TODO need review and debug
var txt = Zipper.InflateBufferWithPureZlib(rawData, rawData.Length);
#region log & trying to parse 2nd level indexes
var ofs = 0;
while (ofs < txt.Length)
{
var kwi2 = new KwIndex2 {
RelOffsetUL = readUInt64(txt, ofs)
};
ofs += 8;
var ofs0 = ofs;
if (Equals(DictHeader.LanguageMode, Encoding.Unicode))
{
uint x9 = 1;
while (x9 != 0)
{
x9 = readUInt16(txt, ofs);
ofs += 2;
}
}
else
{
while (txt[ofs] != 0)
{
ofs++;
}
ofs++;
}
kwi2.Keyword = DictHeader.LanguageMode.GetString(txt, ofs0, ofs - ofs0).TrimEnd('\0');
list2.Add(kwi2);
}
#endregion
}
catch (Exception ex)
{
ErrorLog(ex.ToString());
throw;
}
#endregion
}
else if (magicNum == 0x01000000)
{
#region LZO.Decompress (V2.0 & V1.2)
#region v1.2: 提取二级索引表
var ofs = 0;
var cZipped = rawData[ofs]; //预览一个word
var zipped = cZipped != (byte)0; //如果头一个byte为0，则实际上该块未压缩。
byte[] decompressedData;
if (!zipped)
{
decompressedData = rawData;
}
else
{
#region TODO: unzip
decompressedData = new byte[kw1.UncompressedSize];
var ok = false;
// var in_len = rawData.Length - 3;
// int out_len = BitConverter.ToInt16(rawData, 1);
// if (!ok)
{
try
{
Zipper.MiniLzoDecompress(rawData, 0, (int)kw1.CompressedSize, decompressedData);
ok = decompressedData.Length == (int)kw1.UncompressedSize;
// Debug.Assert(ok, "M-dict 1.2 lzo decompressed failed.");
}
catch (Exception ex)
{
Debug.WriteLine(ex.ToString());
}
}
if (!ok)
{
ErrorLog("BAD, 1.1");
}
#endregion
}
#region 解释二级索引表
while (ofs < (int)kw1.UncompressedSize)
{
var kwi2 = new KwIndex2 {
RelOffsetUL = readUInt32(decompressedData, ofs)
};
ofs += 4; // if (x1 < 0) { Debug.WriteLine(">>> ???"); }
var ofs0 = ofs;
if (Equals(DictHeader.LanguageMode, Encoding.Unicode))
{
uint x9 = 1;
while (x9 != 0)
{
x9 = readUInt16(decompressedData, ofs);
ofs += 2;
}
}
else
{
while (decompressedData[ofs] != 0)
{
ofs++;
}
ofs++;
}
kwi2.Keyword = DictHeader.LanguageMode.GetString(decompressedData, ofs0, ofs - ofs0)
.TrimEnd('\0');
list2.Add(kwi2);
}
#endregion
#endregion
#endregion
}
else if (magicNum == 0)
{
#region log & trying to parse 2nd level indexes
var ofs = 0;
while (ofs < rawData.Length)
{
var kwi2 = new KwIndex2 {
RelOffsetUL = readUInt32(rawData, ofs)
};
ofs += 4;
var ofs0 = ofs;
if (Equals(DictHeader.LanguageMode, Encoding.Unicode))
{
uint x9 = 1;
while (x9 != 0)
{
x9 = readUInt16(rawData, ofs);
ofs += 2;
}
}
else
{
while (rawData[ofs] != 0)
{
ofs++;
}
ofs++;
}
kwi2.Keyword = DictHeader.LanguageMode.GetString(rawData, ofs0, ofs - ofs0).TrimEnd('\0');
list2.Add(kwi2);
Log($" > {kwi2}");
}
#endregion
}
else
{
throw new Exception(
$"提取KWIndex2[]时，期望正确的算法标志0x2000000/0x1000000，然而遇到了{magicNum}/0x{magicNum:X}");
}
return(list2);
}
