int LocaleStringComparison::compare(const char *a, size_t a_len, const char *b, size_t b_len) const
{
size_t ac_off = 0, bc_off = 0;
if (m_ignore_the)
{
if (hasTheWord(a))
ac_off += 4;
if (hasTheWord(b))
bc_off += 4;
}
return std::use_facet<std::collate<char>>(m_locale).compare(
a+ac_off, a+a_len, b+bc_off, b+b_len
);
}
int CaseInsensitiveStringComparison::operator()(const std::string &a, const std::string &b)
{
const char *i = a.c_str();
const char *j = b.c_str();
if (Config.ignore_leading_the)
{
if (hasTheWord(a))
i += 4;
if (hasTheWord(b))
j += 4;
}
int dist;
while (!(dist = tolower(*i)-tolower(*j)) && *j)
++i, ++j;
return dist;
}
int LocaleStringComparison::operator()(const std::string &a, const std::string &b) const
{
const char *ac = a.c_str();
const char *bc = b.c_str();
size_t ac_off = 0, bc_off = 0;
if (m_ignore_the)
{
if (hasTheWord(a))
ac_off += 4;
if (hasTheWord(b))
bc_off += 4;
}
return std::use_facet<std::collate<char>>(m_locale).compare(
ac+ac_off, ac+a.length(), bc+bc_off, bc+b.length()
);
}
