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#include "bitcoinunits.h"
#include <QStringList>
QString BitcoinUnits::name(BitcoinUnits::Unit unit)
{
switch(unit)
{
case BTC: return "BTC";
case mBTC: return "mBTC";
case uBTC: return "uBTC";
default: return "???";
}
}
QString BitcoinUnits::description(BitcoinUnits::Unit unit)
{
switch(unit)
{
case BTC: return "Bitcoin";
case mBTC: return "Milli-bitcoin";
case uBTC: return "Micro-bitcoin";
default: return "???";
}
}
qint64 BitcoinUnits::factor(BitcoinUnits::Unit unit)
{
switch(unit)
{
case BTC: return 100000000;
case mBTC: return 100000;
case uBTC: return 100;
default: return 100000000;
}
}
int BitcoinUnits::decimals(BitcoinUnits::Unit unit)
{
switch(unit)
{
case BTC: return 8;
case mBTC: return 5;
case uBTC: return 2;
default: return 0;
}
}
QString BitcoinUnits::format(BitcoinUnits::Unit unit, qint64 n, bool fPlus)
{
// Note: not using straight sprintf here because we do NOT want
// localized number formatting.
qint64 coin = factor(unit);
int num_decimals = decimals(unit);
qint64 n_abs = (n > 0 ? n : -n);
qint64 quotient = n_abs / coin;
qint64 remainder = n_abs % coin;
QString quotient_str = QString::number(quotient);
QString remainder_str = QString::number(remainder).rightJustified(num_decimals, '0');
// Right-trim excess 0's after the decimal point
int nTrim = 0;
for (int i = remainder_str.size()-1; i>=2 && (remainder_str.at(i) == '0'); --i)
++nTrim;
remainder_str.chop(nTrim);
if (n < 0)
quotient_str.insert(0, '-');
else if (fPlus && n > 0)
quotient_str.insert(0, '+');
return quotient_str + QString(".") + remainder_str;
}
QString BitcoinUnits::formatWithUnit(BitcoinUnits::Unit unit, qint64 amount, bool plussign)
{
return format(unit, amount, plussign) + QString(" ") + name(unit);
}
bool BitcoinUnits::parse(BitcoinUnits::Unit unit, const QString &value, qint64 *val_out)
{
int num_decimals = decimals(unit);
QStringList parts = value.split(".");
if(parts.size() != 2 || parts.at(1).size() > num_decimals)
return false; // Max num decimals
bool ok = false;
QString str = parts[0] + parts[1].leftJustified(num_decimals, '0');
if(str.size()>18)
return false; // Bounds check
qint64 retvalue = str.toLongLong(&ok);
if(val_out)
{
*val_out = retvalue;
}
return ok;
}
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