forked from mbordner/kazaam
/
float.go
61 lines (46 loc) · 1.15 KB
/
float.go
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package converter
import (
"errors"
"strconv"
"github.com/semarcial/kazaam/v5/transform"
)
type Float struct {
ConverterBase
}
func (c *Float) Convert(jsonData []byte, value []byte, args []byte) (newValue []byte, err error) {
var jsonValue, argsValue *transform.JSONValue
jsonValue, err = c.NewJSONValue(value)
if err != nil {
return
}
argsValue, err = c.NewJSONValue(args)
if err != nil {
return
}
if jsonValue.IsNumber() == false || argsValue.IsString() == false {
err = errors.New("invalid value or arguments for float converter")
return
}
numStrVal := argsValue.GetStringValue()
if numStrVal[0] == '.' {
numStrVal = "0" + numStrVal
}
// convert the string to number
argsValue, err = c.NewJSONValue([]byte(numStrVal))
if err != nil {
return
}
if argsValue.IsNumber() == false {
err = errors.New("arguments should be a number for float converter")
return
}
precision := argsValue.GetIntValue()
var val float64
if jsonValue.GetType() == transform.JSONInt {
val = float64(jsonValue.GetIntValue())
} else {
val = jsonValue.GetFloatValue()
}
newValue = []byte(strconv.FormatFloat(val, 'f', int(precision), 64))
return
}