132 lines
2.6 KiB
Go
132 lines
2.6 KiB
Go
// Copyright (C) 2018 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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package main
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import (
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"bytes"
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"fmt"
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"strings"
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)
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type NumberType int
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const (
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NumberMetric NumberType = iota
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NumberBinary
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NumberDuration
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)
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func number(ntype NumberType, v float64) string {
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switch ntype {
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case NumberMetric:
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return metric(v)
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case NumberDuration:
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return duration(v)
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case NumberBinary:
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return binary(v)
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default:
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return metric(v)
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}
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}
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type suffix struct {
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Suffix string
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Multiplier float64
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}
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var metricSuffixes = []suffix{
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{"G", 1e9},
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{"M", 1e6},
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{"k", 1e3},
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}
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var binarySuffixes = []suffix{
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{"Gi", 1 << 30},
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{"Mi", 1 << 20},
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{"Ki", 1 << 10},
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}
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var durationSuffix = []suffix{
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{"year", 365 * 24 * 60 * 60},
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{"month", 30 * 24 * 60 * 60},
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{"day", 24 * 60 * 60},
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{"hour", 60 * 60},
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{"minute", 60},
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{"second", 1},
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}
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func metric(v float64) string {
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return withSuffix(v, metricSuffixes, false)
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}
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func binary(v float64) string {
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return withSuffix(v, binarySuffixes, false)
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}
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func duration(v float64) string {
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return withSuffix(v, durationSuffix, true)
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}
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func withSuffix(v float64, ps []suffix, pluralize bool) string {
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for _, p := range ps {
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if v >= p.Multiplier {
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suffix := p.Suffix
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if pluralize && v/p.Multiplier != 1.0 {
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suffix += "s"
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}
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// If the number only has decimal zeroes, strip em off.
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num := strings.TrimRight(strings.TrimRight(fmt.Sprintf("%.1f", v/p.Multiplier), "0"), ".")
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return fmt.Sprintf("%s %s", num, suffix)
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}
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}
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return strings.TrimRight(strings.TrimRight(fmt.Sprintf("%.1f", v), "0"), ".")
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}
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// commatize returns a number with sep as thousands separators. Handles
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// integers and plain floats.
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func commatize(sep, s string) string {
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// If no dot, don't do anything.
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if !strings.ContainsRune(s, '.') {
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return s
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}
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var b bytes.Buffer
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fs := strings.SplitN(s, ".", 2)
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l := len(fs[0])
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for i := range fs[0] {
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b.Write([]byte{s[i]})
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if i < l-1 && (l-i)%3 == 1 {
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b.WriteString(sep)
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}
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}
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if len(fs) > 1 && len(fs[1]) > 0 {
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b.WriteString(".")
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b.WriteString(fs[1])
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}
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return b.String()
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}
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func proportion(m map[string]int, count int) float64 {
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total := 0
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isMax := true
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for _, n := range m {
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total += n
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if n > count {
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isMax = false
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}
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}
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pct := (100 * float64(count)) / float64(total)
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// To avoid rounding errors in the template, surpassing 100% and breaking
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// the progress bars.
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if isMax && len(m) > 1 && count != total {
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pct -= 0.01
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}
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return pct
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}
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