From 9e6db178b09387e21ac19ce85369cf1ca7a443e8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jes=C3=BAs=20Espino?= <jespinog@gmail.com>
Date: Tue, 27 Mar 2018 10:23:33 +0200
Subject: Adding durafmt library and use it from enterprise global relay export
 (#8487)

* Adding durafmt library and use it from enterprise global relay export

* Allow to specify different server host and server name on smtp connections

* Fixing utils/smtp tests
---
 vendor/github.com/hako/durafmt/durafmt.go | 120 ++++++++++++++++++++++++++++++
 1 file changed, 120 insertions(+)
 create mode 100644 vendor/github.com/hako/durafmt/durafmt.go

(limited to 'vendor/github.com/hako/durafmt/durafmt.go')

diff --git a/vendor/github.com/hako/durafmt/durafmt.go b/vendor/github.com/hako/durafmt/durafmt.go
new file mode 100644
index 000000000..a7e0a48c2
--- /dev/null
+++ b/vendor/github.com/hako/durafmt/durafmt.go
@@ -0,0 +1,120 @@
+// Package durafmt formats time.Duration into a human readable format.
+package durafmt
+
+import (
+	"errors"
+	"strconv"
+	"strings"
+	"time"
+)
+
+var (
+	units = []string{"years", "weeks", "days", "hours", "minutes", "seconds", "milliseconds"}
+)
+
+// Durafmt holds the parsed duration and the original input duration.
+type Durafmt struct {
+	duration time.Duration
+	input    string // Used as reference.
+}
+
+// Parse creates a new *Durafmt struct, returns error if input is invalid.
+func Parse(dinput time.Duration) *Durafmt {
+	input := dinput.String()
+	return &Durafmt{dinput, input}
+}
+
+// ParseString creates a new *Durafmt struct from a string.
+// returns an error if input is invalid.
+func ParseString(input string) (*Durafmt, error) {
+	if input == "0" || input == "-0" {
+		return nil, errors.New("durafmt: missing unit in duration " + input)
+	}
+	duration, err := time.ParseDuration(input)
+	if err != nil {
+		return nil, err
+	}
+	return &Durafmt{duration, input}, nil
+}
+
+// String parses d *Durafmt into a human readable duration.
+func (d *Durafmt) String() string {
+	var duration string
+
+	// Check for minus durations.
+	if string(d.input[0]) == "-" {
+		duration += "-"
+		d.duration = -d.duration
+	}
+
+	// Convert duration.
+	seconds := int64(d.duration.Seconds()) % 60
+	minutes := int64(d.duration.Minutes()) % 60
+	hours := int64(d.duration.Hours()) % 24
+	days := int64(d.duration/(24*time.Hour)) % 365 % 7
+
+	// Edge case between 364 and 365 days.
+	// We need to calculate weeks from what is left from years
+	leftYearDays := int64(d.duration/(24*time.Hour)) % 365
+	weeks := leftYearDays / 7
+	if leftYearDays >= 364 && leftYearDays < 365 {
+		weeks = 52
+	}
+
+	years := int64(d.duration/(24*time.Hour)) / 365
+	milliseconds := int64(d.duration/time.Millisecond) -
+		(seconds * 1000) - (minutes * 60000) - (hours * 3600000) -
+		(days * 86400000) - (weeks * 604800000) - (years * 31536000000)
+
+	// Create a map of the converted duration time.
+	durationMap := map[string]int64{
+		"milliseconds": milliseconds,
+		"seconds":      seconds,
+		"minutes":      minutes,
+		"hours":        hours,
+		"days":         days,
+		"weeks":        weeks,
+		"years":        years,
+	}
+
+	// Construct duration string.
+	for _, u := range units {
+		v := durationMap[u]
+		strval := strconv.FormatInt(v, 10)
+		switch {
+		// add to the duration string if v > 1.
+		case v > 1:
+			duration += strval + " " + u + " "
+		// remove the plural 's', if v is 1.
+		case v == 1:
+			duration += strval + " " + strings.TrimRight(u, "s") + " "
+		// omit any value with 0s or 0.
+		case d.duration.String() == "0" || d.duration.String() == "0s":
+			// note: milliseconds and minutes have the same suffix (m)
+			// so we have to check if the units match with the suffix.
+
+			// check for a suffix that is NOT the milliseconds suffix.
+			if strings.HasSuffix(d.input, string(u[0])) && !strings.Contains(d.input, "ms") {
+				// if it happens that the units are milliseconds, skip.
+				if u == "milliseconds" {
+					continue
+				}
+				duration += strval + " " + u
+			}
+			// process milliseconds here.
+			if u == "milliseconds" {
+				if strings.Contains(d.input, "ms") {
+					duration += strval + " " + u
+					break
+				}
+			}
+			break
+		// omit any value with 0.
+		case v == 0:
+			continue
+		}
+	}
+	// trim any remaining spaces.
+	duration = strings.TrimSpace(duration)
+	return duration
+}
-- 
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