int pstring_t<F>::pcmp(const pstring_t &right) const
{
std::size_t l = std::min(blen(), right.blen());
if (l == 0)
{
if (blen() == 0 && right.blen() == 0)
return 0;
else if (right.blen() == 0)
return 1;
else
return -1;
}
auto si = this->begin();
auto ri = right.begin();
while (si != this->end() && *si == *ri)
{
ri++;
si++;
}
int ret = (si == this->end() ? 0 : *si - *ri);
if (ret == 0)
{
if (this->blen() > right.blen())
ret = 1;
else if (this->blen() < right.blen())
ret = -1;
}
return ret;
}
bool pstring_t<F>::endsWith(const pstring_t &arg) const
{
if (arg.blen() > blen())
return false;
else
return std::equal(arg.c_str(), arg.c_str() + arg.blen(), c_str()+this->blen()-arg.blen());
}
pstring_t<F> pstring_t<F>::replace(const pstring_t &search, const pstring_t &replace) const
{
// FIXME: use this pstringbuffer ret = "";
pstring_t ret = "";
const int slen = search.blen();
const int tlen = blen();
if (slen == 0 || tlen < slen )
return *this;
int i = 0;
while (i < tlen - slen + 1)
{
if (memcmp(cstr()+i,search.cstr(),slen) == 0)
{
ret += replace;
i += slen;
}
else
{
/* avoid adding a code, cat a string ... */
mem_t buf[2] = { *(cstr() + i), 0 };
ret = ret.cat(buf);
i++;
}
}
ret = ret.cat(cstr() + i);
return ret;
}
void pstring_t<F>::pcat(const pstring_t &s)
{
int slen = s.blen();
pstr_t *n = salloc(m_ptr->len() + slen);
if (m_ptr->len() > 0)
std::memcpy(n->str(), m_ptr->str(), m_ptr->len());
if (slen > 0)
std::memcpy(n->str() + m_ptr->len(), s.cstr(), slen);
*(n->str() + n->len()) = 0;
sfree(m_ptr);
m_ptr = n;
}
void pstring_t<F>::pcat(const pstring_t &s)
{
std::size_t slen = s.blen();
pstr_t *n = salloc(m_ptr->len() + slen);
if (m_ptr->len() > 0)
n->copy_from(m_ptr->str(), m_ptr->len());
if (slen > 0)
std::copy(s.c_str(), s.c_str() + slen, n->str() + m_ptr->len());
*(n->str() + n->len()) = 0;
sfree(m_ptr);
m_ptr = n;
}
int pstring_t<F>::pcmp(const pstring_t &right) const
{
long l = std::min(blen(), right.blen());
if (l == 0)
{
if (blen() == 0 && right.blen() == 0)
return 0;
else if (right.blen() == 0)
return 1;
else
return -1;
}
int ret = memcmp(m_ptr->str(), right.cstr(), l);
if (ret == 0)
ret = this->blen() - right.blen();
if (ret < 0)
return -1;
else if (ret > 0)
return 1;
else
return 0;
}
