/*
* Read string s and parse the string into a fixed-decimal-point number.
* sign equals -1 if the number is negative (explicit plus is not allowed,
* according to GNU sort's "info sort".
* The number part before decimal point is in the smain, after the decimal
* point is in sfrac, tail is the pointer to the remainder of the string.
*/
static int
read_number(struct bwstring *s0, int *sign, wchar_t *smain, size_t *main_len, wchar_t *sfrac, size_t *frac_len, unsigned char *si)
{
bwstring_iterator s;
s = bws_begin(s0);
/* always end the fraction with zero, even if we have no fraction */
sfrac[0] = 0;
while (iswblank(bws_get_iter_value(s)))
s = bws_iterator_inc(s, 1);
if (bws_get_iter_value(s) == (wchar_t)symbol_negative_sign) {
*sign = -1;
s = bws_iterator_inc(s, 1);
}
// This is '0', not '\0', do not change this
while (iswdigit(bws_get_iter_value(s)) &&
(bws_get_iter_value(s) == L'0'))
s = bws_iterator_inc(s, 1);
while (bws_get_iter_value(s) && *main_len < MAX_NUM_SIZE) {
if (iswdigit(bws_get_iter_value(s))) {
smain[*main_len] = bws_get_iter_value(s);
s = bws_iterator_inc(s, 1);
*main_len += 1;
} else if (symbol_thousands_sep &&
(bws_get_iter_value(s) == (wchar_t)symbol_thousands_sep))
s = bws_iterator_inc(s, 1);
else
break;
}
smain[*main_len] = 0;
if (bws_get_iter_value(s) == (wchar_t)symbol_decimal_point) {
s = bws_iterator_inc(s, 1);
while (iswdigit(bws_get_iter_value(s)) &&
*frac_len < MAX_NUM_SIZE) {
sfrac[*frac_len] = bws_get_iter_value(s);
s = bws_iterator_inc(s, 1);
*frac_len += 1;
}
sfrac[*frac_len] = 0;
while (*frac_len > 0 && sfrac[*frac_len - 1] == L'0') {
--(*frac_len);
sfrac[*frac_len] = L'\0';
}
}
setsuffix(bws_get_iter_value(s),si);
if ((*main_len + *frac_len) == 0)
*sign = 0;
return (0);
}
/*
* Compare two version strings
*/
int
vcmp(struct bwstring *s1, struct bwstring *s2)
{
bwstring_iterator si1, si2;
wchar_t c1, c2;
size_t len1, len2, slen1, slen2;
int cmp_bytes, cmp_res;
if (s1 == s2)
return (0);
cmp_bytes = bwscmp(s1, s2, 0);
if (cmp_bytes == 0)
return (0);
len1 = slen1 = BWSLEN(s1);
len2 = slen2 = BWSLEN(s2);
if (slen1 < 1)
return (-1);
if (slen2 < 1)
return (+1);
si1 = bws_begin(s1);
si2 = bws_begin(s2);
c1 = bws_get_iter_value(si1);
c2 = bws_get_iter_value(si2);
if (c1 == L'.' && (slen1 == 1))
return (-1);
if (c2 == L'.' && (slen2 == 1))
return (+1);
if (slen1 == 2 && c1 == L'.' &&
bws_get_iter_value(bws_iterator_inc(si1, 1)) == L'.')
return (-1);
if (slen2 == 2 && c2 == L'.' &&
bws_get_iter_value(bws_iterator_inc(si2, 1)) == L'.')
return (+1);
if (c1 == L'.' && c2 != L'.')
return (-1);
if (c1 != L'.' && c2 == L'.')
return (+1);
if (c1 == L'.' && c2 == L'.') {
si1 = bws_iterator_inc(si1, 1);
si2 = bws_iterator_inc(si2, 1);
}
find_suffix(si1, bws_end(s1), &len1);
find_suffix(si2, bws_end(s2), &len2);
if ((len1 == len2) && (bws_iterator_cmp(si1, si2, len1) == 0))
return (cmp_bytes);
cmp_res = cmpversions(si1, bws_iterator_inc(si1, len1), si2,
bws_iterator_inc(si2, len2));
if (cmp_res == 0)
cmp_res = cmp_bytes;
return (cmp_res);
}