int GetIntParam( char const *input, uint8_t len, uint8_t decimal, uint8_t acceptneg )
{
int retval = 0;
char converted;
uint8_t found = 0;
uint8_t negative = 0;
char const *tmp = input;
while( tmp - input < len ) {
converted = ConvertDigit(*tmp, decimal);
if(converted == (char)-1) {
if(!retval) {
if(*tmp == 'x' || *tmp == 'X') {
decimal = 0;
converted = 0;
} else if(*tmp == '-') {
negative = 1;
converted = 0;
} else break;
} else break;
}
retval *= decimal ? 10 : 16;
retval += converted;
found = 1;
++tmp;
}
return found ? (negative ? 0 - retval : retval ) : (acceptneg ? INT_MIN : -1);
}
// Reads an integer.
bool SymFile::ReadInteger(unsigned long& n)
{
SkipWhitespace();
if (!IsAsciiDigit(m_buffer[m_pos]))
return false;
int startPos = m_pos;
int radix = 10;
if (m_buffer[m_pos] == '0' && m_buffer[m_pos + 1] == 'x')
{
radix = 16;
m_pos += 2;
}
unsigned long cutoff = ULONG_MAX / radix;
unsigned long cutoffRemainder = ULONG_MAX % radix;
int digit;
n = 0;
while ((digit = ConvertDigit(m_buffer[m_pos], radix)) != -1)
{
if (n < cutoff || (n == cutoff && (unsigned long)digit <= cutoffRemainder))
{
n = n * radix + digit;
}
else
{
m_pos++;
while (ConvertDigit(m_buffer[m_pos], radix) != -1)
m_pos++;
RaiseError("integer is too large (%s)", std::string(&m_buffer[startPos], m_pos - startPos).c_str());
}
m_pos++;
}
return true;
}
