public IBencodeObject ParseStringTest(byte[] Content)
{
RStack <IBencodeObject> outputStack = new RStack <IBencodeObject>();
Stack <BencodeCommand> commandStack = new Stack <BencodeCommand>();
commandStack.Push(BencodeCommand.None);
byte[] bytes = Content;
long numberTemp = 0;//
List <byte> tempByteArr = new List <byte>();
foreach (byte bt in bytes)
{
switch (commandStack.NowValue)
{
case BencodeCommand.None:
if (bt == 0x69) //I
{
numberTemp = 0;
commandStack.Push(BencodeCommand.Integer);
continue;
}
else if (bt == 0x64) //D
{
commandStack.Push(BencodeCommand.Dictionary);
outputStack.SetReversePopStart();
continue;
}
else if (bt == 0x6C) //L
{
commandStack.Push(BencodeCommand.List);
outputStack.SetReversePopStart();
continue;
}
else if (bt >= 0x30 && bt <= 0x39) //S
{
commandStack.Push(BencodeCommand.StringBytesLength);
numberTemp = 0;
int firstNum = bt ^ 0x30;
numberTemp += firstNum;
tempByteArr.Clear();
continue;
}
else
{
throw new Exception("Format wrong.");
}
case BencodeCommand.Integer:
if (bt == 0x65)
{
commandStack.Pop();
BencodeInteger integer = new BencodeInteger(numberTemp);
outputStack.Push(integer);
continue;
}
else
{
numberTemp *= 10;
int Num = bt ^ 0x30;
numberTemp += Num;
continue;
}
case BencodeCommand.StringBytesLength:
if (bt == 0x3A)
{
commandStack.Pop();
commandStack.Push(BencodeCommand.StringBytesContent);
continue;
}
else
{
numberTemp *= 10;
int Num = bt ^ 0x30;
numberTemp += Num;
continue;
}
case BencodeCommand.StringBytesContent:
tempByteArr.Add(bt);
numberTemp--;
if (numberTemp == 0)
{
byte[] tempBytes = tempByteArr.ToArray();
BencodeBytes BBytes = new BencodeBytes(tempBytes);
outputStack.Push(BBytes);
commandStack.Pop();
}
continue;
case BencodeCommand.Dictionary:
if (bt == 0x65)
{
IBencodeObject[] dictItems = outputStack.ReversePop();
if ((dictItems.Length & 1) != 0)
{
throw new Exception("DICT ERR!!!");
}
int length = dictItems.Length >> 1;
BencodeDictionary dict = new BencodeDictionary();
/*
* for (int i = 0; i < length; i++)
* {
* BencodeBytes key = (BencodeBytes)dictItems[(i << 1)];
* IBencodeObject content = dictItems[(i << 1) + 1];
* dict.Add(Encoding.UTF8.GetString(key.ToArray()), content);
* }
*/
outputStack.Push(dict);
commandStack.Pop();
continue;
}
goto case BencodeCommand.None;
case BencodeCommand.List:
if (bt == 0x65)
{
IBencodeObject[] dictItems = outputStack.ReversePop();
BencodeList bl = new BencodeList();
//bl.AddRange(dictItems);
outputStack.Push(bl);
commandStack.Pop();
continue;
}
goto case BencodeCommand.None;
}
}
if (outputStack.StackCount != 1)
{
throw new Exception("Exception::the parser is arrive the end of data. 例外狀況::剖析器已達檔案結尾。");
}
return(outputStack.GetValue());
}
/// <summary> /// Matches if stack pop type is the same of <typeparamref name="T"/> /// </summary> /// <param name="args"></param> public static void MatchType <T>(object args) => Stack.Push(Stack.Pop() is T);