mirror of https://github.com/lukechilds/komodo.git
Wladimir J. van der Laan
13 years ago
14 changed files with 220 additions and 46 deletions
@ -0,0 +1,96 @@ |
|||
#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; |
|||
} |
@ -0,0 +1,34 @@ |
|||
#ifndef BITCOINUNITS_H |
|||
#define BITCOINUNITS_H |
|||
|
|||
#include <QString> |
|||
|
|||
// Bitcoin unit definitions
|
|||
class BitcoinUnits |
|||
{ |
|||
public: |
|||
enum Unit |
|||
{ |
|||
BTC, |
|||
mBTC, |
|||
uBTC |
|||
}; |
|||
|
|||
// Short name
|
|||
static QString name(Unit unit); |
|||
// Longer description
|
|||
static QString description(Unit unit); |
|||
// Number of satoshis / unit
|
|||
static qint64 factor(Unit unit); |
|||
// Number of decimals left
|
|||
static int decimals(Unit unit); |
|||
// Format as string
|
|||
static QString format(Unit unit, qint64 amount, bool plussign=false); |
|||
// Format as string (with unit)
|
|||
static QString formatWithUnit(Unit unit, qint64 amount, bool plussign=false); |
|||
// Parse string to coin amount
|
|||
static bool parse(Unit unit, const QString &value, qint64 *val_out); |
|||
|
|||
}; |
|||
|
|||
#endif // BITCOINUNITS_H
|
Loading…
Reference in new issue