diff options
Diffstat (limited to 'wae')
-rw-r--r-- | wae/wae.go | 65 |
1 files changed, 65 insertions, 0 deletions
@@ -148,3 +148,68 @@ func (wae *wae) FmtCurrency(num float64, v uint64, currency currency.Type) []byt return b } + +// FmtAccounting returns the currency representation of 'num' with digits/precision of 'v' for 'wae' +// in accounting notation. returned as a []byte just in case the caller wishes to add more and can help +// avoid allocations; otherwise just cast as string. +func (wae *wae) FmtAccounting(num float64, v uint64, currency currency.Type) []byte { + + s := strconv.FormatFloat(math.Abs(num), 'f', int(v), 64) + symbol := wae.currencies[currency] + l := len(s) + len(wae.decimal) + + b := make([]byte, 0, l) + + for i := len(s) - 1; i >= 0; i-- { + + if s[i] == '.' { + b = append(b, wae.decimal[0]) + continue + } + + b = append(b, s[i]) + } + + if num < 0 { + + for j := len(symbol) - 1; j >= 0; j-- { + b = append(b, symbol[j]) + } + + for j := len(wae.currencyNegativePrefix) - 1; j >= 0; j-- { + b = append(b, wae.currencyNegativePrefix[j]) + } + + for j := len(wae.minus) - 1; j >= 0; j-- { + b = append(b, wae.minus[j]) + } + + } else { + + for j := len(symbol) - 1; j >= 0; j-- { + b = append(b, symbol[j]) + } + + for j := len(wae.currencyPositivePrefix) - 1; j >= 0; j-- { + b = append(b, wae.currencyPositivePrefix[j]) + } + + } + + // reverse + for i, j := 0, len(b)-1; i < j; i, j = i+1, j-1 { + b[i], b[j] = b[j], b[i] + } + + if num < 0 { + + b = append(b, wae.currencyNegativeSuffix...) + + } else { + + b = append(b, wae.currencyPositiveSuffix...) + + } + + return b +} |