CMString WCPattern::parseHex()
{
#define to_low(x) (((x) >= 'A' && (x) <= 'Z') ? ((x) - 'A' + 'a') : (x))
#define is_dig(x) ((x) >= '0' && (x) <= '9')
#define is_hex(x) (is_dig(x) || (to_low(x) >= 'a' && to_low(x) <= 'f'))
#define to_int(x) ((is_dig(x)) ? ((x) - '0') : (to_low(x) - 'a' + 10))
int ci = curInd;
wchar_t ch1 = (ci + 0 < pattern.GetLength()) ? pattern[ci + 0] : USHRT_MAX;
wchar_t ch2 = (ci + 1 < pattern.GetLength()) ? pattern[ci + 1] : USHRT_MAX;
wchar_t ch3 = (ci + 2 < pattern.GetLength()) ? pattern[ci + 2] : USHRT_MAX;
wchar_t ch4 = (ci + 3 < pattern.GetLength()) ? pattern[ci + 3] : USHRT_MAX;
CMString s = L" ";
if (is_hex(ch1) && is_hex(ch2) && is_hex(ch3) && is_hex(ch4)) {
curInd += 2;
s.SetAt(0, (to_int(ch1) << 12 & 0xF000) | (to_int(ch2) << 8 & 0x0F00) |
(to_int(ch3) << 4 & 0x0F00) | (to_int(ch4) & 0x000F));
}
else if (is_hex(ch1) && is_hex(ch2)) {
curInd += 2;
s.SetAt(0, (to_int(ch1) << 4 & 0xF0) | (to_int(ch2) & 0x0F));
}
return s;
#undef to_low
#undef is_dig
#undef is_hex
#undef to_int
}
CMString WCPattern::parseOctal()
{
#define islowoc(x) ((x) >= '0' && (x) <= '3')
#define isoc(x) ((x) >= '0' && (x) <= '7')
#define fromoc(x) ((x) - '0')
int ci = curInd;
wchar_t ch1 = (ci + 0 < pattern.GetLength()) ? pattern[ci + 0] : USHRT_MAX;
wchar_t ch2 = (ci + 1 < pattern.GetLength()) ? pattern[ci + 1] : USHRT_MAX;
wchar_t ch3 = (ci + 2 < pattern.GetLength()) ? pattern[ci + 2] : USHRT_MAX;
CMString s = L" ";
if (islowoc(ch1) && isoc(ch2)) {
curInd += 2;
s.SetAt(0, fromoc(ch1) * 8 + fromoc(ch2));
if (isoc(ch3)) {
++curInd;
s.SetAt(0, s[0] * 8 + fromoc(ch3));
}
}
else if (isoc(ch1) && isoc(ch2)) {
curInd += 2;
s.SetAt(0, fromoc(ch1) * 8 + fromoc(ch2));
}
else raiseError();
return s;
#undef islowoc
#undef isoc
#undef fromoc
}