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|
package decor
import (
"fmt"
"io"
"strconv"
"strings"
)
const (
_ = iota
KiB = 1 << (iota * 10)
MiB
GiB
TiB
)
const (
KB = 1000
MB = KB * 1000
GB = MB * 1000
TB = GB * 1000
)
const (
_ = iota
UnitKiB
UnitKB
)
type CounterKiB int64
func (c CounterKiB) Format(st fmt.State, verb rune) {
prec, ok := st.Precision()
if verb == 'd' || !ok {
prec = 0
}
if verb == 'f' && !ok {
prec = 6
}
// retain old beahavior if s verb used
if verb == 's' {
prec = 1
}
var res, unit string
switch {
case c >= TiB:
unit = "TiB"
res = strconv.FormatFloat(float64(c)/TiB, 'f', prec, 64)
case c >= GiB:
unit = "GiB"
res = strconv.FormatFloat(float64(c)/GiB, 'f', prec, 64)
case c >= MiB:
unit = "MiB"
res = strconv.FormatFloat(float64(c)/MiB, 'f', prec, 64)
case c >= KiB:
unit = "KiB"
res = strconv.FormatFloat(float64(c)/KiB, 'f', prec, 64)
default:
unit = "b"
res = strconv.FormatInt(int64(c), 10)
}
if st.Flag(' ') {
res += " "
}
res += unit
if w, ok := st.Width(); ok {
if len(res) < w {
pad := strings.Repeat(" ", w-len(res))
if st.Flag(int('-')) {
res += pad
} else {
res = pad + res
}
}
}
io.WriteString(st, res)
}
type CounterKB int64
func (c CounterKB) Format(st fmt.State, verb rune) {
prec, ok := st.Precision()
if verb == 'd' || !ok {
prec = 0
}
if verb == 'f' && !ok {
prec = 6
}
// retain old beahavior if s verb used
if verb == 's' {
prec = 1
}
var res, unit string
switch {
case c >= TB:
unit = "TB"
res = strconv.FormatFloat(float64(c)/TB, 'f', prec, 64)
case c >= GB:
unit = "GB"
res = strconv.FormatFloat(float64(c)/GB, 'f', prec, 64)
case c >= MB:
unit = "MB"
res = strconv.FormatFloat(float64(c)/MB, 'f', prec, 64)
case c >= KB:
unit = "kB"
res = strconv.FormatFloat(float64(c)/KB, 'f', prec, 64)
default:
unit = "b"
res = strconv.FormatInt(int64(c), 10)
}
if st.Flag(' ') {
res += " "
}
res += unit
if w, ok := st.Width(); ok {
if len(res) < w {
pad := strings.Repeat(" ", w-len(res))
if st.Flag(int('-')) {
res += pad
} else {
res = pad + res
}
}
}
io.WriteString(st, res)
}
// CountersNoUnit is a wrapper around Counters with no unit param.
func CountersNoUnit(pairFormat string, wcc ...WC) Decorator {
return Counters(0, pairFormat, wcc...)
}
// CountersKibiByte is a wrapper around Counters with predefined unit UnitKiB (bytes/1024).
func CountersKibiByte(pairFormat string, wcc ...WC) Decorator {
return Counters(UnitKiB, pairFormat, wcc...)
}
// CountersKiloByte is a wrapper around Counters with predefined unit UnitKB (bytes/1000).
func CountersKiloByte(pairFormat string, wcc ...WC) Decorator {
return Counters(UnitKB, pairFormat, wcc...)
}
// Counters decorator with dynamic unit measure adjustment.
//
// `unit` one of [0|UnitKiB|UnitKB] zero for no unit
//
// `pairFormat` printf compatible verbs for current and total, like "%f" or "%d"
//
// `wcc` optional WC config
//
// pairFormat example if UnitKB is chosen:
//
// "%.1f / %.1f" = "1.0MB / 12.0MB" or "% .1f / % .1f" = "1.0 MB / 12.0 MB"
func Counters(unit int, pairFormat string, wcc ...WC) Decorator {
var wc WC
for _, widthConf := range wcc {
wc = widthConf
}
wc.Init()
d := &countersDecorator{
WC: wc,
unit: unit,
pairFormat: pairFormat,
}
return d
}
type countersDecorator struct {
WC
unit int
pairFormat string
completeMsg *string
}
func (d *countersDecorator) Decor(st *Statistics) string {
if st.Completed && d.completeMsg != nil {
return d.FormatMsg(*d.completeMsg)
}
var str string
switch d.unit {
case UnitKiB:
str = fmt.Sprintf(d.pairFormat, CounterKiB(st.Current), CounterKiB(st.Total))
case UnitKB:
str = fmt.Sprintf(d.pairFormat, CounterKB(st.Current), CounterKB(st.Total))
default:
str = fmt.Sprintf(d.pairFormat, st.Current, st.Total)
}
return d.FormatMsg(str)
}
func (d *countersDecorator) OnCompleteMessage(msg string) {
d.completeMsg = &msg
}
|
