math expressions check code

1 files changed, 68 insertions, 4 deletions

diff --git a/stopspam.cpp b/stopspam.cpp
index 8ca9111..7df9a0b 100644..100755
--- a/stopspam.cpp
+++ b/stopspam.cpp
@@ -133,6 +133,7 @@ MIRANDA_HOOK_EVENT(ME_DB_EVENT_FILTER_ADD, w, l)
 	// if message contains right answer...
 	
 	BYTE msg = 1;
+	static int math_answer = 0;
 	if(gbInvisDisable)
 	{
 		if(CallProtoService(dbei->szModule, PS_GETSTATUS, 0, 0) == ID_STATUS_INVISIBLE)
@@ -155,9 +156,9 @@ MIRANDA_HOOK_EVENT(ME_DB_EVENT_FILTER_ADD, w, l)
 		}
 		else
 		{
-			std::string check(toUTF8(variables_parse(gbAnswer, hContact))), msg(toUTF8(message));

-			boost::regex expr(check);

-			answered = boost::regex_search(msg.begin(), msg.end(), expr);

+			std::string check(toUTF8(variables_parse(gbAnswer, hContact))), msg(toUTF8(message));
+			boost::regex expr(check);
+			answered = boost::regex_search(msg.begin(), msg.end(), expr);
 		}
 	}	
 	if(answered)
@@ -219,7 +220,70 @@ MIRANDA_HOOK_EVENT(ME_DB_EVENT_FILTER_ADD, w, l)
 			tstring q;
 			if(gbInfTalkProtection)
 				q += _T("StopSpam automatic message:\r\n");
-			q += variables_parse(gbQuestion, hContact);
+			if(gbMathExpression)
+			{ //parse math expression in question
+				tstring tmp_question = gbQuestion;
+				std::list<int> args;
+				std::list<TCHAR> actions;
+				std::string arg;
+				tstring::size_type p1 = gbQuestion.find(_T("X")), p2 = 0;
+				const tstring expr_chars = _T("X+-/*");
+				while(expr_chars.find(gbQuestion[p1]) != tstring::npos)
+				{
+					p2 = p1;
+					for(p1 = gbQuestion.find(_T("X"), p1); p1 != tstring::npos; ++p1)
+						arg += get_random_num(1);
+#ifdef UNICODE
+					tmp_question.replace(p2, arg.size(), toUTF16(arg));
+#else
+					tmp_question.replace(p2, arg.size(), arg);
+#endif
+					args.push_back(atoi(arg.c_str()));
+					actions.push_back(gbQuestion[p1]);
+					++p1;
+				}
+				math_answer = args.front();
+				args.pop_front();
+				while(!args.empty())
+				{
+					if(!actions.empty())
+					{
+						switch(actions.front())
+						{
+						case _T('+'):
+							{
+								math_answer += args.front();
+								args.pop_front();
+							}
+							break;
+						case _T('-'):
+							{
+								math_answer -= args.front();
+								args.pop_front();
+							}
+							break;
+						case _T('/'):
+							{
+								math_answer /= args.front();
+								args.pop_front();
+							}
+							break;
+						case _T('*'):
+							{
+								math_answer *= args.front();
+								args.pop_front();
+							}
+							break;
+						}
+						actions.pop_front();
+					}
+					else
+						break;
+				}
+				q += variables_parse(tmp_question, hContact);
+			}
+			else
+				q += variables_parse(gbQuestion, hContact);
 
 #ifdef _UNICODE
 			char * buf=mir_utf8encodeW(q.c_str());