/// <summary>
/// 添加敏感词对象
/// </summary>
/// <param name="sensitiveNode"></param>
public void Add(char key, SensitiveNode sensitiveNode)
{
if (sensitiveNode == null || childSensitiveNodeDic.ContainsKey(sensitiveNode.Key))
{
return;
}
childSensitiveNodeDic.Add(sensitiveNode.key, sensitiveNode);
}
/// <summary>
/// 检测是否含有敏感词
/// </summary>
/// <param name="txt"></param>
/// <param name="beginIndex"></param>
/// <param name="matchType"></param>
/// <returns></returns>
public int CheckSensitiveWord(string txt, int beginIndex, MatchType matchType)
{
bool flag = false;
if (string.IsNullOrEmpty(txt))
{
return(0);
}
if (!SensitiveReady)
{
InitSensitive();
}
char charKey;
char sensitiveChar;
int matchFlag = 0;
SensitiveNode node = null;
SensitiveNode temp = null;
for (int i = beginIndex; i < txt.Length; i++)
{
charKey = txt.ElementAt(i);
if (char.IsWhiteSpace(charKey))
{
matchFlag++;
continue;
}
if (TryGetSensitiveChar(charKey, out sensitiveChar))
{
charKey = sensitiveChar;
}
if (i == beginIndex)
{
if (!sensitiveWordDic.TryGetValue(charKey, out node))
{
break;
}
}
else if (null != node && node.TryGetValue(charKey, out temp))
{
node = temp;
}
else
{
break;
}
matchFlag++;
if (node.IsEnd)
{
flag = true;
if (matchType == MatchType.Min)
{
break;
}
}
}
if (!flag)
{
matchFlag = 0;
}
return(matchFlag);
}
/// <summary>
/// 添加敏感词到Hashtable
/// </summary>
/// <param name="sensitiveWordList">敏感词列表</param>
public void AddSensitiveWord(List <string> sensitiveWordList)
{
if (sensitiveWordList == null || sensitiveWordList.Count == 0)
{
return;
}
sensitiveWordDic.Clear();
//当前节点
SensitiveNode curSensitiveNode = null;
//零时节点
SensitiveNode tempSensitiveNode = null;
string sensitiveWord = "";
char charKey;
char sensitiveChar;
for (int i = 0; i < sensitiveWordList.Count; i++)
{
sensitiveWord = sensitiveWordList[i];
if (string.IsNullOrEmpty(sensitiveWord))
{
continue;
}
for (int j = 0; j < sensitiveWord.Length; j++)
{
charKey = sensitiveWord.ElementAt(j);
if (char.IsWhiteSpace(charKey))
{
continue;
}
//如果当前 查找的字符为字母，则对大小写进行合并
if (TryGetSensitiveChar(charKey, out sensitiveChar))
{
charKey = sensitiveChar;
}
if (j == 0)
{
if (!sensitiveWordDic.TryGetValue(charKey, out curSensitiveNode))
{
curSensitiveNode = new SensitiveNode();
curSensitiveNode.Key = charKey;
sensitiveWordDic.Add(charKey, curSensitiveNode);
}
}
else
{
if (!curSensitiveNode.TryGetValue(charKey, out tempSensitiveNode))
{
tempSensitiveNode = new SensitiveNode();
tempSensitiveNode.Key = charKey;
curSensitiveNode.Add(charKey, tempSensitiveNode);
curSensitiveNode = tempSensitiveNode;
}
else
{
curSensitiveNode = tempSensitiveNode;
}
}
if (j == sensitiveWord.Length - 1)
{
curSensitiveNode.IsEnd = true;
}
}
}
}
/// <summary>
/// 尝试获取ey 的SensitiveObject
/// </summary>
/// <param name="key"></param>
/// <param name="obj"></param>
/// <returns></returns>
public bool TryGetValue(char key, out SensitiveNode node)
{
return(childSensitiveNodeDic.TryGetValue(key, out node));
}
