341 lines
8.7 KiB
Go
341 lines
8.7 KiB
Go
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package duration_fmt
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import (
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"errors"
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"fmt"
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"regexp"
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"strconv"
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"strings"
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"time"
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)
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var (
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//units, _ = DefaultUnitsCoder.Decode("year,week,day,hour,minute,second,millisecond,microsecond")
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units, _ = DefaultUnitsCoder.Decode("年,星期,天,小时,分钟,秒,毫秒,微秒")
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unitsShort = []string{"y", "w", "d", "h", "m", "s", "ms", "µs"}
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)
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// Durafmt holds the parsed duration and the original input duration.
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type Durafmt struct {
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duration time.Duration
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input string // Used as reference.
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limitN int // Non-zero to limit only first N elements to output.
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limitUnit string // Non-empty to limit max unit
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}
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// LimitToUnit sets the output format, you will not have unit bigger than the UNIT specified. UNIT = "" means no restriction.
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func (d *Durafmt) LimitToUnit(unit string) *Durafmt {
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d.limitUnit = unit
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return d
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}
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// LimitFirstN sets the output format, outputing only first N elements. n == 0 means no limit.
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func (d *Durafmt) LimitFirstN(n int) *Durafmt {
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d.limitN = n
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return d
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}
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func (d *Durafmt) Duration() time.Duration {
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return d.duration
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}
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// Truncate sets precision
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func (d *Durafmt) Truncate(unit time.Duration) *Durafmt {
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d.duration = d.duration.Truncate(unit)
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return d
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}
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// Parse creates a new *Durafmt struct, returns error if input is invalid.
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func Parse(dinput time.Duration) *Durafmt {
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input := dinput.String()
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return &Durafmt{dinput, input, 0, ""}
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}
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// ParseShort creates a new *Durafmt struct, short form, returns error if input is invalid.
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// It's shortcut for `Parse(dur).LimitFirstN(1)`
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func ParseShort(dinput time.Duration) *Durafmt {
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input := dinput.String()
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return &Durafmt{dinput, input, 1, ""}
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}
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// ParseString creates a new *Durafmt struct from a string.
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// returns an error if input is invalid.
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func ParseString(input string) (*Durafmt, error) {
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if input == "0" || input == "-0" {
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return nil, errors.New("durafmt: missing unit in duration " + input)
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}
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duration, err := time.ParseDuration(input)
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if err != nil {
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return nil, err
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}
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return &Durafmt{duration, input, 0, ""}, nil
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}
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// ParseStringShort creates a new *Durafmt struct from a string, short form
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// returns an error if input is invalid.
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// It's shortcut for `ParseString(durStr)` and then calling `LimitFirstN(1)`
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func ParseStringShort(input string) (*Durafmt, error) {
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if input == "0" || input == "-0" {
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return nil, errors.New("durafmt: missing unit in duration " + input)
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}
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duration, err := time.ParseDuration(input)
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if err != nil {
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return nil, err
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}
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return &Durafmt{duration, input, 1, ""}, nil
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}
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// String parses d *Durafmt into a human readable duration with default units.
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func (d *Durafmt) String() string {
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return d.Format(units)
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}
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// Format parses d *Durafmt into a human readable duration with units.
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func (d *Durafmt) Format(units Units) string {
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var duration string
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// Check for minus durations.
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if string(d.input[0]) == "-" {
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duration += "-"
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d.duration = -d.duration
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}
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var microseconds int64
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var milliseconds int64
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var seconds int64
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var minutes int64
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var hours int64
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var days int64
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var weeks int64
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var years int64
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var shouldConvert = false
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remainingSecondsToConvert := int64(d.duration / time.Microsecond)
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// Convert duration.
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if d.limitUnit == "" {
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shouldConvert = true
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}
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if d.limitUnit == "years" || shouldConvert {
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years = remainingSecondsToConvert / (365 * 24 * 3600 * 1000000)
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remainingSecondsToConvert -= years * 365 * 24 * 3600 * 1000000
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shouldConvert = true
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}
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if d.limitUnit == "weeks" || shouldConvert {
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weeks = remainingSecondsToConvert / (7 * 24 * 3600 * 1000000)
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remainingSecondsToConvert -= weeks * 7 * 24 * 3600 * 1000000
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shouldConvert = true
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}
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if d.limitUnit == "days" || shouldConvert {
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days = remainingSecondsToConvert / (24 * 3600 * 1000000)
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remainingSecondsToConvert -= days * 24 * 3600 * 1000000
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shouldConvert = true
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}
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if d.limitUnit == "hours" || shouldConvert {
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hours = remainingSecondsToConvert / (3600 * 1000000)
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remainingSecondsToConvert -= hours * 3600 * 1000000
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shouldConvert = true
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}
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if d.limitUnit == "minutes" || shouldConvert {
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minutes = remainingSecondsToConvert / (60 * 1000000)
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remainingSecondsToConvert -= minutes * 60 * 1000000
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shouldConvert = true
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}
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if d.limitUnit == "seconds" || shouldConvert {
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seconds = remainingSecondsToConvert / 1000000
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remainingSecondsToConvert -= seconds * 1000000
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shouldConvert = true
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}
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if d.limitUnit == "milliseconds" || shouldConvert {
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milliseconds = remainingSecondsToConvert / 1000
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remainingSecondsToConvert -= milliseconds * 1000
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}
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microseconds = remainingSecondsToConvert
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// Create a map of the converted duration time.
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durationMap := []int64{
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microseconds,
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milliseconds,
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seconds,
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minutes,
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hours,
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days,
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weeks,
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years,
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}
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// Construct duration string.
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for i, u := range units.Units() {
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v := durationMap[7-i]
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strval := strconv.FormatInt(v, 10)
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switch {
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// add to the duration string if v > 1.
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case v > 1:
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duration += strval + " " + u.Plural + " "
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// remove the plural 's', if v is 1.
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case v == 1:
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duration += strval + " " + u.Singular + " "
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// omit any value with 0s or 0.
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case d.duration.String() == "0" || d.duration.String() == "0s":
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pattern := fmt.Sprintf("^-?0%s$", unitsShort[i])
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isMatch, err := regexp.MatchString(pattern, d.input)
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if err != nil {
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return ""
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}
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if isMatch {
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duration += strval + " " + u.Plural
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}
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// omit any value with 0.
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case v == 0:
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continue
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}
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}
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// trim any remaining spaces.
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duration = strings.TrimSpace(duration)
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// if more than 2 spaces present return the first 2 strings
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// if short version is requested
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if d.limitN > 0 {
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parts := strings.Split(duration, " ")
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if len(parts) > d.limitN*2 {
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duration = strings.Join(parts[:d.limitN*2], " ")
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}
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}
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return duration
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}
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func (d *Durafmt) InternationalString() string {
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var duration string
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// Check for minus durations.
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if string(d.input[0]) == "-" {
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duration += "-"
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d.duration = -d.duration
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}
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var microseconds int64
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var milliseconds int64
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var seconds int64
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var minutes int64
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var hours int64
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var days int64
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var weeks int64
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var years int64
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var shouldConvert = false
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remainingSecondsToConvert := int64(d.duration / time.Microsecond)
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// Convert duration.
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if d.limitUnit == "" {
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shouldConvert = true
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}
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if d.limitUnit == "years" || shouldConvert {
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years = remainingSecondsToConvert / (365 * 24 * 3600 * 1000000)
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remainingSecondsToConvert -= years * 365 * 24 * 3600 * 1000000
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shouldConvert = true
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}
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if d.limitUnit == "weeks" || shouldConvert {
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weeks = remainingSecondsToConvert / (7 * 24 * 3600 * 1000000)
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remainingSecondsToConvert -= weeks * 7 * 24 * 3600 * 1000000
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shouldConvert = true
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}
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if d.limitUnit == "days" || shouldConvert {
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days = remainingSecondsToConvert / (24 * 3600 * 1000000)
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remainingSecondsToConvert -= days * 24 * 3600 * 1000000
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shouldConvert = true
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}
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if d.limitUnit == "hours" || shouldConvert {
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hours = remainingSecondsToConvert / (3600 * 1000000)
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remainingSecondsToConvert -= hours * 3600 * 1000000
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shouldConvert = true
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}
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if d.limitUnit == "minutes" || shouldConvert {
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minutes = remainingSecondsToConvert / (60 * 1000000)
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remainingSecondsToConvert -= minutes * 60 * 1000000
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shouldConvert = true
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}
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if d.limitUnit == "seconds" || shouldConvert {
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seconds = remainingSecondsToConvert / 1000000
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remainingSecondsToConvert -= seconds * 1000000
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shouldConvert = true
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}
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if d.limitUnit == "milliseconds" || shouldConvert {
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milliseconds = remainingSecondsToConvert / 1000
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remainingSecondsToConvert -= milliseconds * 1000
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}
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microseconds = remainingSecondsToConvert
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// Create a map of the converted duration time.
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durationMap := map[string]int64{
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"µs": microseconds,
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"ms": milliseconds,
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"s": seconds,
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"m": minutes,
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"h": hours,
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"d": days,
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"w": weeks,
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"y": years,
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}
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// Construct duration string.
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for i := range units.Units() {
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u := unitsShort[i]
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v := durationMap[u]
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strval := strconv.FormatInt(v, 10)
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switch {
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// add to the duration string if v > 0.
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case v > 0:
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duration += strval + " " + u + " "
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// omit any value with 0.
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case d.duration.String() == "0":
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pattern := fmt.Sprintf("^-?0%s$", unitsShort[i])
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isMatch, err := regexp.MatchString(pattern, d.input)
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if err != nil {
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return ""
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}
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if isMatch {
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duration += strval + " " + u
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}
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// omit any value with 0.
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case v == 0:
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continue
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}
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}
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// trim any remaining spaces.
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duration = strings.TrimSpace(duration)
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// if more than 2 spaces present return the first 2 strings
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// if short version is requested
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if d.limitN > 0 {
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parts := strings.Split(duration, " ")
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if len(parts) > d.limitN*2 {
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duration = strings.Join(parts[:d.limitN*2], " ")
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}
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}
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return duration
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}
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func (d *Durafmt) TrimSpace() string {
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return strings.Replace(d.String(), " ", "", -1)
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}
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