mie::local Namespace Reference

Classes
struct	addsubmul
struct	comparable
struct	dividable
struct	Empty
class	FixedBuffer
struct	hasNegative
struct	inversible
struct	PrimitiveFunction
struct	shiftable
class	VariableBuffer

Functions
std::istream &	getDigits (std::istream &is, std::string &str, bool allowNegative=false)

Function Documentation

getDigits()

std::istream & mie::local::getDigits ( std::istream & is, std::string & str, bool allowNegative = false )

inline

Definition at line 84 of file zm.h.

{
    std::ios_base::fmtflags keep = is.flags();
    size_t pos = 0;
    char c;
    while (is >> c) {
        if (('0' <= c && c <= '9') /* digits */
          || (pos == 1 && (str[0] == '0' && c == 'x')) /* 0x.. */
          || ('a' <= c && c <= 'f') /* lowercase hex */
          || ('A' <= c && c <= 'F') /* uppercase hex */
          || (allowNegative && pos == 0 && c == '-')) { /* -digits */
            str.push_back(c);
            if (pos == 0) {
                is >> std::noskipws;
            }
            pos++;
        } else {
            is.unget();
            break;
        }
    }
    is.flags(keep);
    return is;
}