130 lines
2.7 KiB
Go
130 lines
2.7 KiB
Go
// Copyright 2014 The Gogs Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package base
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import (
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"crypto/md5"
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"encoding/hex"
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"fmt"
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"time"
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)
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// Encode string to md5 hex value
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func EncodeMd5(str string) string {
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m := md5.New()
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m.Write([]byte(str))
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return hex.EncodeToString(m.Sum(nil))
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}
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// Seconds-based time units
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const (
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Minute = 60
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Hour = 60 * Minute
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Day = 24 * Hour
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Week = 7 * Day
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Month = 30 * Day
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Year = 12 * Month
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)
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// TimeSince calculates the time interval and generate user-friendly string.
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func TimeSince(then time.Time) string {
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now := time.Now()
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lbl := "ago"
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diff := now.Unix() - then.Unix()
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if then.After(now) {
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lbl = "from now"
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diff = then.Unix() - now.Unix()
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}
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switch {
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case diff <= 0:
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return "now"
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case diff <= 2:
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return fmt.Sprintf("1 second %s", lbl)
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case diff < 1*Minute:
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return fmt.Sprintf("%d seconds %s", diff, lbl)
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case diff < 2*Minute:
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return fmt.Sprintf("1 minute %s", lbl)
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case diff < 1*Hour:
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return fmt.Sprintf("%d minutes %s", diff/Minute, lbl)
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case diff < 2*Hour:
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return fmt.Sprintf("1 hour %s", lbl)
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case diff < 1*Day:
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return fmt.Sprintf("%d hours %s", diff/Hour, lbl)
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case diff < 2*Day:
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return fmt.Sprintf("1 day %s", lbl)
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case diff < 1*Week:
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return fmt.Sprintf("%d days %s", diff/Day, lbl)
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case diff < 2*Week:
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return fmt.Sprintf("1 week %s", lbl)
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case diff < 1*Month:
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return fmt.Sprintf("%d weeks %s", diff/Week, lbl)
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case diff < 2*Month:
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return fmt.Sprintf("1 month %s", lbl)
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case diff < 1*Year:
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return fmt.Sprintf("%d months %s", diff/Month, lbl)
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case diff < 18*Month:
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return fmt.Sprintf("1 year %s", lbl)
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}
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return then.String()
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}
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// Subtract deals with subtraction of all types of number.
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func Subtract(left interface{}, right interface{}) interface{} {
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var rleft, rright int64
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var fleft, fright float64
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var isInt bool = true
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switch left.(type) {
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case int:
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rleft = int64(left.(int))
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case int8:
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rleft = int64(left.(int8))
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case int16:
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rleft = int64(left.(int16))
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case int32:
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rleft = int64(left.(int32))
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case int64:
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rleft = left.(int64)
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case float32:
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fleft = float64(left.(float32))
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isInt = false
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case float64:
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fleft = left.(float64)
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isInt = false
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}
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switch right.(type) {
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case int:
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rright = int64(right.(int))
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case int8:
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rright = int64(right.(int8))
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case int16:
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rright = int64(right.(int16))
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case int32:
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rright = int64(right.(int32))
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case int64:
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rright = right.(int64)
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case float32:
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fright = float64(left.(float32))
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isInt = false
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case float64:
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fleft = left.(float64)
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isInt = false
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}
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if isInt {
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return rleft - rright
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} else {
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return fleft + float64(rleft) - (fright + float64(rright))
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}
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}
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