gtsocial-umbx

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commaf.go (762B)

      1 //go:build go1.6
      2 // +build go1.6
      3 
      4 package humanize
      5 
      6 import (
      7 	"bytes"
      8 	"math/big"
      9 	"strings"
     10 )
     11 
     12 // BigCommaf produces a string form of the given big.Float in base 10
     13 // with commas after every three orders of magnitude.
     14 func BigCommaf(v *big.Float) string {
     15 	buf := &bytes.Buffer{}
     16 	if v.Sign() < 0 {
     17 		buf.Write([]byte{'-'})
     18 		v.Abs(v)
     19 	}
     20 
     21 	comma := []byte{','}
     22 
     23 	parts := strings.Split(v.Text('f', -1), ".")
     24 	pos := 0
     25 	if len(parts[0])%3 != 0 {
     26 		pos += len(parts[0]) % 3
     27 		buf.WriteString(parts[0][:pos])
     28 		buf.Write(comma)
     29 	}
     30 	for ; pos < len(parts[0]); pos += 3 {
     31 		buf.WriteString(parts[0][pos : pos+3])
     32 		buf.Write(comma)
     33 	}
     34 	buf.Truncate(buf.Len() - 1)
     35 
     36 	if len(parts) > 1 {
     37 		buf.Write([]byte{'.'})
     38 		buf.WriteString(parts[1])
     39 	}
     40 	return buf.String()
     41 }