//private KeyWordANFStatus CheckChar(char chr, ref KeyWordDic lastDic)
//{
// if (lastDic != null)
// {
// bool isacc = lastDic.HasEndChar;
// if (lastDic.TryGetValue(chr, out lastDic))
// {
// if (lastDic.HasEndChar)
// {
// lastDic = null;
// if (isacc)
// return KeyWordANFStatus.accept2;
// return KeyWordANFStatus.accept;
// }
// else
// {
// if (isacc)
// return KeyWordANFStatus.acceptwating;
// return KeyWordANFStatus.wating;
// }
// }
// if (isacc)
// return KeyWordANFStatus.accept1;
// }
// if (dics[chr] != null)
// {
// lastDic = dics[chr];
// }
// return KeyWordANFStatus.abort;
//}
private KeyWordANFStatus CheckChar(char chr, ref KeyWordDic lastDic, KeyWordANFStatus lastStatu)
{
if (lastDic != null)
{
bool isacc = lastStatu != KeyWordANFStatus.accept && lastDic.HasEndChar;
if (lastDic.TryGetValue(chr, out lastDic))
{
if (lastDic.HasEndChar)
{
//lastDic = null;
if (isacc)
{
//lastDic = null;
return(KeyWordANFStatus.accept2);
}
return(KeyWordANFStatus.accept);
}
else
{
if (isacc)
{
return(KeyWordANFStatus.acceptwating);
}
return(KeyWordANFStatus.wating);
}
}
if (isacc)
{
lastDic = null;
return(KeyWordANFStatus.accept1);
}
}
if (dics[chr] != null)
{
lastDic = dics[chr];
}
return(KeyWordANFStatus.abort);
}
public IEnumerable <KeyWordMatchResult> MatchKeyWord(string text)
{
if (text == null)
{
yield break;
}
KeyWordDic innerDic = null;
int iStart = 0;
KeyWordANFStatus statu = KeyWordANFStatus.abort;
string substr;
try
{
dicLock.EnterReadLock();
var tlen = text.Length;
for (int i = 0; i < tlen; i++)
{
if (innerDic == null)
{
innerDic = dics[text[i]];
iStart = i;
}
else
{
statu = CheckChar(text[i], ref innerDic, statu);
if (statu == KeyWordANFStatus.abort)
{
//if (innerDic == null)
// iStart = i + 1;
//else
{
int j = 1;
for (; j < i - iStart; j++)
{
if (dics[text[iStart + j]] != null)
{
break;
}
}
iStart += j;
i = iStart;
innerDic = dics[text[i]];
}
}
else if (statu == KeyWordANFStatus.accept1)
{
var wm = text[i - 1].ToString();
object tag = null;
if (DicTag.ContainsKey(wm))
{
tag = DicTag[wm];
}
yield return(new KeyWordMatchResult
{
KeyWordMatched = wm,
PostionStart = iStart,
PostionEnd = i,
Tag = tag,
});
i--;
iStart = i;
}
else if (statu == KeyWordANFStatus.accept2)
{
var wm = text[i - 1].ToString();
object tag = null;
if (DicTag.ContainsKey(wm))
{
tag = DicTag[wm];
}
yield return(new KeyWordMatchResult
{
KeyWordMatched = text[i - 1].ToString(),
PostionStart = iStart,
PostionEnd = i,
Tag = tag,
});
wm = text.Substring(iStart, 2);
tag = null;
if (DicTag.ContainsKey(wm))
{
tag = DicTag[wm];
}
yield return(new KeyWordMatchResult
{
KeyWordMatched = text.Substring(iStart, 2),
PostionStart = iStart,
PostionEnd = i,
Tag = tag,
});
iStart = i;
}
else if (statu == KeyWordANFStatus.acceptwating)
{
var wm = text[i - 1].ToString();
object tag = null;
if (DicTag.ContainsKey(wm))
{
tag = DicTag[wm];
}
yield return(new KeyWordMatchResult
{
KeyWordMatched = text[i - 1].ToString(),
PostionStart = iStart,
PostionEnd = i,
Tag = tag,
});
iStart = i - 1;
}
else if (statu == KeyWordANFStatus.accept)
{
substr = text.Substring(iStart, i - iStart + 1);
object tag = null;
if (DicTag.ContainsKey(substr))
{
tag = DicTag[substr];
}
yield return(new KeyWordMatchResult
{
KeyWordMatched = substr,
PostionStart = iStart,
PostionEnd = i,
Tag = tag,
});
//for (int j = 1; j < substr.Length; j++)
//{
// innerDic = dics[substr[j]];
// if (innerDic != null)
// {
// i = iStart + j;
// iStart = i;
// break;
// }
//}
}
}
}
}
finally
{
dicLock.ExitReadLock();
}
}
