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56 lines
1.1 KiB
Go
56 lines
1.1 KiB
Go
package humanize
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import (
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"bytes"
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"strconv"
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"strings"
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"golang.org/x/text/language"
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"golang.org/x/text/message"
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)
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// Commaf produces a string form of the given number in base 10 with
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// commas after every three orders of magnitude.
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//
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// e.g. Commaf(834142.32) -> 834,142.32
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func Commaf(v float64) string {
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buf := &bytes.Buffer{}
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if v < 0 {
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buf.Write([]byte{'-'})
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v = 0 - v
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}
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comma := []byte{','}
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parts := strings.Split(strconv.FormatFloat(v, 'f', -1, 64), ".")
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pos := 0
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if len(parts[0])%3 != 0 {
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pos += len(parts[0]) % 3
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buf.WriteString(parts[0][:pos])
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buf.Write(comma)
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}
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for ; pos < len(parts[0]); pos += 3 {
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buf.WriteString(parts[0][pos : pos+3])
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buf.Write(comma)
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}
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buf.Truncate(buf.Len() - 1)
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if len(parts) > 1 {
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buf.Write([]byte{'.'})
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buf.WriteString(parts[1])
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}
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return buf.String()
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}
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// Commaf2 ...
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func Commaf2(v float64) string {
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p := message.NewPrinter(language.English)
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return p.Sprintf("%.2f", v)
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}
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// Commaf0 ...
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func Commaf0(v float64) string {
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p := message.NewPrinter(language.English)
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return p.Sprintf("%.0f", v)
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}
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