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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2017 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package quantity
import (
"fmt"
"math"
"github.com/snapcore/snapd/i18n"
)
// these are taken from github.com/chipaca/quantity with permission :-)
func FormatAmount(amount uint64, width int) string {
if width < 0 {
width = 5
}
max := uint64(5000)
maxFloat := 999.5
if width < 4 {
width = 3
max = 999
maxFloat = 99.5
}
if amount <= max {
pad := ""
if width > 5 {
pad = " "
}
return fmt.Sprintf("%*d%s", width-len(pad), amount, pad)
}
var prefix rune
r := float64(amount)
// zetta and yotta are me being pedantic: maxuint64 is ~18EB
for _, prefix = range "kMGTPEZY" {
r /= 1000
if r < maxFloat {
break
}
}
width--
digits := 3
if r < 99.5 {
digits--
if r < 9.5 {
digits--
if r < .95 {
digits--
}
}
}
precision := 0
if (width - digits) > 1 {
precision = width - digits - 1
}
s := fmt.Sprintf("%*.*f%c", width, precision, r, prefix)
if r < .95 {
return s[1:]
}
return s
}
func FormatBPS(n, sec float64, width int) string {
if sec < 0 {
sec = -sec
}
return FormatAmount(uint64(n/sec), width-2) + "B/s"
}
const (
period = 365.25 // julian years (c.f. the actual orbital period, 365.256363004d)
)
func divmod(a, b float64) (q, r float64) {
q = math.Floor(a / b)
return q, a - q*b
}
var (
// TRANSLATORS: this needs to be a single rune that is understood to mean "seconds" in e.g. 1m30s
// (I fully expect this to always be "s", given it's a SI unit)
secs = i18n.G("s")
// TRANSLATORS: this needs to be a single rune that is understood to mean "minutes" in e.g. 1m30s
mins = i18n.G("m")
// TRANSLATORS: this needs to be a single rune that is understood to mean "hours" in e.g. 1h30m
hours = i18n.G("h")
// TRANSLATORS: this needs to be a single rune that is understood to mean "days" in e.g. 1d20h
days = i18n.G("d")
// TRANSLATORS: this needs to be a single rune that is understood to mean "years" in e.g. 1y45d
years = i18n.G("y")
)
// dt is seconds (as in the output of time.Now().Seconds())
func FormatDuration(dt float64) string {
if dt < 60 {
if dt >= 9.995 {
return fmt.Sprintf("%.1f%s", dt, secs)
} else if dt >= .9995 {
return fmt.Sprintf("%.2f%s", dt, secs)
}
var prefix rune
for _, prefix = range "mµn" {
dt *= 1000
if dt >= .9995 {
break
}
}
if dt > 9.5 {
return fmt.Sprintf("%3.f%c%s", dt, prefix, secs)
}
return fmt.Sprintf("%.1f%c%s", dt, prefix, secs)
}
if dt < 600 {
m, s := divmod(dt, 60)
return fmt.Sprintf("%.f%s%02.f%s", m, mins, s, secs)
}
dt /= 60 // dt now minutes
if dt < 99.95 {
return fmt.Sprintf("%3.1f%s", dt, mins)
}
if dt < 10*60 {
h, m := divmod(dt, 60)
return fmt.Sprintf("%.f%s%02.f%s", h, hours, m, mins)
}
if dt < 24*60 {
if h, m := divmod(dt, 60); m < 10 {
return fmt.Sprintf("%.f%s%1.f%s", h, hours, m, mins)
}
return fmt.Sprintf("%3.1f%s", dt/60, hours)
}
dt /= 60 // dt now hours
if dt < 10*24 {
d, h := divmod(dt, 24)
return fmt.Sprintf("%.f%s%02.f%s", d, days, h, hours)
}
if dt < 99.95*24 {
if d, h := divmod(dt, 24); h < 10 {
return fmt.Sprintf("%.f%s%.f%s", d, days, h, hours)
}
return fmt.Sprintf("%4.1f%s", dt/24, days)
}
dt /= 24 // dt now days
if dt < 2*period {
return fmt.Sprintf("%4.0f%s", dt, days)
}
dt /= period // dt now years
if dt < 9.995 {
return fmt.Sprintf("%4.2f%s", dt, years)
}
if dt < 99.95 {
return fmt.Sprintf("%4.1f%s", dt, years)
}
if dt < 999.5 {
return fmt.Sprintf("%4.f%s", dt, years)
}
if dt > math.MaxUint64 || uint64(dt) == 0 {
// TODO: figure out exactly what overflow causes the ==0
return "ages!"
}
return FormatAmount(uint64(dt), 4) + years
}
|
