void TransmitExpression(DataType *arr)
{
SymbolList();
Stack p;
DataType x = 0;
CreatSatck(&p);
int i = 0;
int j = 0;
while (arr[i] != '\0')
{
if (JudgeType(arr[i])) //读取的是数字
{
data[j++] = arr[i]; //数字直接保存在data里面
if (JudgeType(arr[i + 1]) != 1)
data[j++] = ' '; //空格隔开
i++;
}
else
{
if (p.low == p.top) //栈是空栈，则直接压栈
{
push(&p,arr[i]);
i++;
}
else
{
switch (check(&p, arr[i]))
{
case '>': //栈顶符号的优先级高,退栈
if(pop(&p, &x))
{
data[j++] = x;
data[j++] = ' '; //以空格隔开
}
break;
case '<': //读取的优先级高，直接压栈
push(&p,arr[i]);
i++;
break;
case '=':
pop(&p, &x);
i++;
break;
}
}
}
}
while (pop(&p, &x)) //将剩下的符号全部退栈
{
data[j++] = ' ';
data[j++] =x;
}
printf("%s\n", data);
free(p.low);
}
//do action to the node.
void ONConstant::Action(Node *node)
{
if ( !JudgeType(node) ) {
return;
}
// do not obfuscate constant char 'x'
if ( node->tokenString[0] == '\'' && node->tokenString.length() != 3 ) {
return ;
}
// get Ture value. If fail do not obfusc.
double trueValue;
if ( !getConstantValue(node->tokenString,&trueValue) ) {
return ;
}
// do Obfuscate To Node.
beforeObfuscate = node->tokenString;
afterObfuscated = NumberExpGenerator::get().Generate(trueValue);
// set value to the node.
node->obfuscatedTokenString = afterObfuscated;
node->isObfuscated = true;
// will save the changes.
recordTable->AddRecord(beforeObfuscate,afterObfuscated,
node->first_line,node->first_column,
node->last_line,node->last_column);
}
// main function. Obufuscator will call this function
void ONWhile::Action(Node *node)
{
if ( !JudgeType(node) ) {
return;
}
// before Obfuscated
/*
WHILE '(' expression ')'
statement
*/
// after Obfuscated
/*
l_continue:
if (!(expression))
goto l_break;
statement;
goto l_continue;
l_break:;
*/
string l_continue = GenerateId();
string l_break = GenerateId();
Node *expression = node->getChild(2);
Node *statement = node->getChild(4);
stringstream ss;
ss << l_continue << ":";
ss << "if(!(" << expression->ToSourceCode(isRemoveTypeset) << "))";
ss << "goto " << l_break << ";";
ss << statement->ToSourceCode(isRemoveTypeset) ;
ss << "goto " << l_continue << ";";
ss << l_break << ":;";
string code = ss.str();
node->isObfuscated = true;
node->obfuscatedTokenString = code;
}
int EvaluateExpression()
{
StackFigure p;
int sum = 0;
CreatSatckFigure(&p);
int i = 0;
int a = 0;
int b = 0;
while (data[i] != '\0') //读取后缀表达式数组中的符号
{
switch (JudgeType(data[i]))
{
case 0: //读取的是符号
pop_figure(&p, &b); //将数字栈上面两个数字退栈
pop_figure(&p, &a);
sum = opreation(a,data[i],b); //将这两个数字运算，并将结果返回
push_figure(&p, sum); //将结果入栈
sum = 0;
i++;
break;
case 1:
while (data[i] != ' ') //将连续的数字全部读取，并转化为相应的整数
{
sum = sum * 10 + data[i]-'0';
i++;
}
push_figure(&p,sum); //将运算结果压栈
sum= 0;
break;
default:
i++;
break;
}
}
pop_figure(&p, &sum);
return sum; //将数字栈剩下的元素返回
free(p.low);
}
void ONString::Action(Node *node)
{
if ( !JudgeType(node) ) {
return;
}
if ( node->tokenString.length() < 2 ) {
cerr << "error token string_literal length smaller than 2" << endl;
return ;
}
// convert to hex style
beforeObfuscate = node->tokenString;
afterObfuscated = Convert2HexStyle(node->tokenString);
// set obfuscated
node->isObfuscated = true;
node->obfuscatedTokenString = afterObfuscated;
//save the changes.
recordTable->AddRecord(beforeObfuscate, afterObfuscated,
node->first_line, node->first_column,
node->last_line, node->last_column);
}
/*
如：
CREATE TABLE student(
name char(20),
id int,
class char(10),
);
*/
bool userDatabase::CreateTable(){
kTable newTable;
int Size = mySql.sqlWord.size();
if(Size < 3)
return false;
newTable.name = mySql.sqlWord[2];
int i = 3;
string name;
int type,unit,iskey;
// if(i < Size)
for(; i < Size; i++){
type = -1;
unit = 0;
iskey = 0;
//提取姓名
name = mySql.sqlWord[i];
i ++;
//提取种类
if(canRead(i))
type = JudgeType(i);
if(type == -1) return false;
i++;
//判断单位
if(canRead(i) && mySql.sqlWord[i] != ","){
if(type == 2){
unit = JudgeUnit(i);
i++;
}
if(canRead(i) && mySql.sqlWord[i] != ","){
iskey = JudgeKey(i);
}
}
if(!newTable.addColumn(name,type,unit,iskey)){
cout << "[Error] The table have the same column!" << endl;
return false;
}
//判断主键
}
Size = newTable.columnName.size();
if(FindTable(newTable.name) != -1){
cout << "[Error] Table is existing!" << endl;
return false;
}
if((int)newTable.columnName.size() == 0){
cout << "[Error] Can't create a empty table!" << endl;
return false;
}
//--------------------------------------------------------------------
cout << "[OK] Creating tables success." << endl;
kLine::MakeLine(60);
cout << "Table's name is" << " [" << newTable.name << "]" << endl;
cout << setiosflags(ios::left);
cout << setw(15) << "ColumnName";
cout << setw(10) << "type";
cout << setw(10) << "unit";
cout << setw(15) << "key" << endl;
for(int i = 0; i < Size; i++){
//列名字
cout << setw(15) << newTable.columnName[i];
//列种类
if(newTable.columnType[i] == 1)
cout << setw(10) << "int";
if(newTable.columnType[i] == 2)
cout << setw(10) << "char";
//
cout << setw(10) << newTable.columnUnit[i];
if(newTable.isKey[i] & (1 << 0))
cout << setw(15) << "[PRIMARY KEY] ";
if(newTable.isKey[i] & (1 << 1))
cout << setw(8) << "[UNIQUE] ";
if(newTable.isKey[i] & (1 << 2))
cout << setw(10) << "[NOT NULL]";
cout << endl;
}
kLine::MakeLine(60);
myTable.push_back(newTable);
return true;
};