private string changeBitnessHelper(string bin, string dec, int MAX, CalcViews.Programmer.ProgrammerCalcBits currentBits, CalcViews.Programmer.ProgrammerCalcBits prevBits)
{
string retVal = string.Empty;
// First we'll resize the bin string to have the right number of bits
// per the prevBits value
int prevMax = (prevBits == CalcViews.Programmer.ProgrammerCalcBits.Qword) ? LONG :
(prevBits == CalcViews.Programmer.ProgrammerCalcBits.Dword) ? INT :
(prevBits == CalcViews.Programmer.ProgrammerCalcBits.Word) ? SHORT : BYTE;
int count = prevMax - bin.Length;
for (int i = 0; i < count; i++)
{
bin = "0" + bin;
}
if (bin.StartsWith("1"))
{
count = MAX - bin.Length;
string tempExp = string.Empty;
for (int i = 0; i < count; i++)
{
tempExp += "1";
}
return(CalcHelpers.bin2Dec(tempExp + bin, (currentView as ProgrammerView).currentBits));
}
return(dec);
}
public void ChangeBitness(CalcViews.Programmer.ProgrammerCalcBits prevBits)
{
if (!_mainPage.isProgrammer())
{
_mainPage.initCalcError();
return;
}
string dec = Get();
string bin = CalcViews.Programmer.dec2Long(dec, 2);
// next if the user has chosen a specific bitness
if ((currentView as ProgrammerView).currentBits == CalcViews.Programmer.ProgrammerCalcBits.Qword)
{
// ASSUME we're comming from a lower order bit
dec = changeBitnessHelper(bin, dec, LONG, (currentView as ProgrammerView).currentBits, prevBits);
}
else if ((currentView as ProgrammerView).currentBits == CalcViews.Programmer.ProgrammerCalcBits.Dword)
{
// if we're going down in bitness
if (bin.Length > INT)
{
bin = bin.Substring(bin.Length - INT);
dec = CalcHelpers.bin2Dec(bin, (currentView as ProgrammerView).currentBits);
}
// if we're going up in bitness
else
{
dec = changeBitnessHelper(bin, dec, INT, (currentView as ProgrammerView).currentBits, prevBits);
}
}
else if ((currentView as ProgrammerView).currentBits == CalcViews.Programmer.ProgrammerCalcBits.Word)
{
// if we're going down in bitness
if (bin.Length > SHORT)
{
bin = bin.Substring(bin.Length - SHORT);
dec = CalcHelpers.bin2Dec(bin, (currentView as ProgrammerView).currentBits);
}
// if we're going up in bitness
else
{
dec = changeBitnessHelper(bin, dec, SHORT, (currentView as ProgrammerView).currentBits, prevBits);
}
}
else if ((currentView as ProgrammerView).currentBits == CalcViews.Programmer.ProgrammerCalcBits.Byte)
{
// if we're going down in bitness
if (bin.Length > BYTE)
{
bin = bin.Substring(bin.Length - BYTE);
//dec = mainPage.bin2Dec(bin);
}
// can't go smaller than byte
dec = CalcHelpers.bin2Dec(bin, (currentView as ProgrammerView).currentBits);
}
Set(dec, GetLastInputType(), true);
}
