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package decor
import (
"fmt"
)
const (
_ = iota
UnitKiB
UnitKB
)
// CountersNoUnit is a wrapper around Counters with no unit param.
func CountersNoUnit(pairFmt string, wcc ...WC) Decorator {
return Counters(0, pairFmt, wcc...)
}
// CountersKibiByte is a wrapper around Counters with predefined unit
// UnitKiB (bytes/1024).
func CountersKibiByte(pairFmt string, wcc ...WC) Decorator {
return Counters(UnitKiB, pairFmt, wcc...)
}
// CountersKiloByte is a wrapper around Counters with predefined unit
// UnitKB (bytes/1000).
func CountersKiloByte(pairFmt string, wcc ...WC) Decorator {
return Counters(UnitKB, pairFmt, wcc...)
}
// Counters decorator with dynamic unit measure adjustment.
//
// `unit` one of [0|UnitKiB|UnitKB] zero for no unit
//
// `pairFmt` printf compatible verbs for current and total, like "%f" or "%d"
//
// `wcc` optional WC config
//
// pairFmt example if unit=UnitKB:
//
// pairFmt="%.1f / %.1f" output: "1.0MB / 12.0MB"
// pairFmt="% .1f / % .1f" output: "1.0 MB / 12.0 MB"
// pairFmt="%d / %d" output: "1MB / 12MB"
// pairFmt="% d / % d" output: "1 MB / 12 MB"
//
func Counters(unit int, pairFmt string, wcc ...WC) Decorator {
var wc WC
for _, widthConf := range wcc {
wc = widthConf
}
d := &countersDecorator{
WC: wc.Init(),
producer: chooseSizeProducer(unit, pairFmt),
}
return d
}
type countersDecorator struct {
WC
producer func(*Statistics) string
}
func (d *countersDecorator) Decor(st *Statistics) string {
return d.FormatMsg(d.producer(st))
}
func chooseSizeProducer(unit int, format string) func(*Statistics) string {
if format == "" {
format = "%d / %d"
}
switch unit {
case UnitKiB:
return func(st *Statistics) string {
return fmt.Sprintf(format, SizeB1024(st.Current), SizeB1024(st.Total))
}
case UnitKB:
return func(st *Statistics) string {
return fmt.Sprintf(format, SizeB1000(st.Current), SizeB1000(st.Total))
}
default:
return func(st *Statistics) string {
return fmt.Sprintf(format, st.Current, st.Total)
}
}
}
|
