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#include "balance.h"
#include "util.h"
#include <deque>
#include <algorithm>
namespace ledger {
amount_t balance_t::amount(const commodity_t& commodity) const
{
if (! commodity) {
if (amounts.size() == 1) {
amounts_map::const_iterator i = amounts.begin();
return (*i).second;
}
}
else if (amounts.size() > 0) {
amounts_map::const_iterator i = amounts.find(&commodity);
if (i != amounts.end())
return (*i).second;
}
return amount_t();
}
balance_t balance_t::value(const std::time_t moment) const
{
balance_t temp;
for (amounts_map::const_iterator i = amounts.begin();
i != amounts.end();
i++)
temp += (*i).second.value(moment);
return temp;
}
balance_t balance_t::price() const
{
balance_t temp;
for (amounts_map::const_iterator i = amounts.begin();
i != amounts.end();
i++)
temp += (*i).second.price();
return temp;
}
struct compare_amount_commodities {
bool operator()(const amount_t * left, const amount_t * right) const {
return left->commodity().symbol < right->commodity().symbol;
}
};
void balance_t::write(std::ostream& out,
const int first_width,
const int latter_width) const
{
bool first = true;
int lwidth = latter_width;
if (lwidth == -1)
lwidth = first_width;
typedef std::deque<const amount_t *> amounts_deque;
amounts_deque sorted;
for (amounts_map::const_iterator i = amounts.begin();
i != amounts.end();
i++)
if ((*i).second)
sorted.push_back(&(*i).second);
std::stable_sort(sorted.begin(), sorted.end(), compare_amount_commodities());
for (amounts_deque::const_iterator i = sorted.begin();
i != sorted.end();
i++) {
int width;
if (! first) {
out << std::endl;
width = lwidth;
} else {
first = false;
width = first_width;
}
out.width(width);
out.fill(' ');
out << std::right << **i;
}
if (first) {
out.width(first_width);
out.fill(' ');
out << std::right << "0";
}
}
balance_t& balance_t::operator*=(const balance_t& bal)
{
if (! *this || ! bal)
return (*this = 0L);
else if (amounts.size() == 1 && bal.amounts.size() == 1)
return *this *= (*bal.amounts.begin()).second;
else {
std::string msg;
std::ostringstream errmsg(msg);
errmsg << "It makes no sense to multiply two balances: "
<< *this << " * " << bal;
throw amount_error(errmsg.str());
}
}
balance_t& balance_t::operator/=(const balance_t& bal)
{
if (! *this) {
return (*this = 0L);
}
else if (! bal) {
std::string msg;
std::ostringstream errmsg(msg);
errmsg << "Attempt to divide by zero: " << *this << " / " << bal;
throw amount_error(errmsg.str());
}
else if (amounts.size() == 1 && bal.amounts.size() == 1) {
return *this /= (*bal.amounts.begin()).second;
}
else if (*this == bal) {
return (*this = 1L);
}
else {
std::string msg;
std::ostringstream errmsg(msg);
errmsg << "It makes no sense to divide two balances: "
<< *this << " / " << bal;
throw amount_error(errmsg.str());
}
}
balance_t::operator amount_t() const
{
if (amounts.size() == 1) {
return (*amounts.begin()).second;
}
else if (amounts.size() == 0) {
return amount_t();
}
else {
std::string msg;
std::ostringstream errmsg(msg);
errmsg << "Cannot convert a balance with "
<< "multiple commodities to an amount: " << *this;
throw amount_error(errmsg.str());
}
}
balance_pair_t& balance_pair_t::operator/=(const balance_pair_t& bal_pair)
{
if (bal_pair.cost && ! cost)
cost = new balance_t(quantity);
quantity /= bal_pair.quantity;
if (cost)
*cost /= bal_pair.cost ? *bal_pair.cost : bal_pair.quantity;
if (bal_pair.price && *bal_pair.price) {
if (price)
*price /= *bal_pair.price;
}
return *this;
}
} // namespace ledger
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