website/pkg/utility/number_format.go

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829 B
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package utility
import (
"fmt"
"strconv"
"strings"
)
// FormatNumberShort compresses a number into as short a string as possible (e.g. "1.2K" when it gets into the thousands).
func FormatNumberShort(value int64) string {
// Under 1,000?
if value < 1000 {
return fmt.Sprintf("%d", value)
}
// Start to bucket it.
var (
thousands = float64(value) / 1000
millions = float64(thousands) / 1000
billions = float64(millions) / 1000
)
formatFloat := func(v float64) string {
s := strconv.FormatFloat(v, 'f', 1, 64)
if strings.HasSuffix(s, ".0") {
return strings.Split(s, ".")[0]
}
return s
}
if thousands < 1000 {
return fmt.Sprintf("%sK", formatFloat(thousands))
}
if millions < 1000 {
return fmt.Sprintf("%sM", formatFloat(millions))
}
return fmt.Sprintf("%sB", formatFloat(billions))
}