/
utils.go
183 lines (156 loc) · 3.42 KB
/
utils.go
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package prago
import (
"bufio"
"bytes"
"fmt"
"math/rand"
"net"
"os"
"strconv"
"strings"
"time"
"unicode"
"github.com/gosimple/slug"
"golang.org/x/text/runes"
"golang.org/x/text/transform"
"golang.org/x/text/unicode/norm"
)
func getLocalIP() string {
addrs, err := net.InterfaceAddrs()
if err != nil {
return ""
}
for _, address := range addrs {
// check the address type and if it is not a loopback the display it
if ipnet, ok := address.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
if ipnet.IP.To4() != nil {
return ipnet.IP.String()
}
}
}
return ""
}
func prettyFilename(s string) string {
if len(s) > 100 {
s = s[len(s)-99:]
}
items := strings.Split(s, ".")
for i := range items {
items[i] = prettyURL(items[i])
}
return strings.Join(items, ".")
}
func prettyURL(s string) string {
return slug.Make(s)
}
var letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
var seeded = false
func randomString(n int) string {
if !seeded {
rand.Seed(time.Now().Unix())
seeded = true
}
b := make([]rune, n)
for i := range b {
b[i] = letters[rand.Intn(len(letters))]
}
return string(b)
}
// ConsoleQuestion asks for boolean answer in console
func consoleQuestion(question string) bool {
fmt.Printf("%s (yes|no)\n", question)
reader := bufio.NewReader(os.Stdin)
text, _ := reader.ReadString('\n')
if text == "yes\n" || text == "y\n" {
return true
}
return false
}
func crop(in string, cropLength int) string {
if cropLength < 0 {
return in
}
if in == "" {
return ""
}
inRune := []rune(in)
if len(inRune) <= cropLength {
return in
} else {
inRune = inRune[:cropLength]
in = strings.TrimRightFunc(string(inRune), func(r rune) bool {
if r == ' ' {
return false
} else {
return true
}
})
in = strings.TrimRightFunc(in, func(r rune) bool {
if r == ' ' {
return true
} else {
return false
}
})
return in + "…"
}
}
func numberToString(n int, sep rune) string {
s := strconv.Itoa(n)
startOffset := 0
var buff bytes.Buffer
if n < 0 {
startOffset = 1
buff.WriteByte('-')
}
l := len(s)
commaIndex := 3 - ((l - startOffset) % 3)
if commaIndex == 3 {
commaIndex = 0
}
for i := startOffset; i < l; i++ {
if commaIndex == 3 {
buff.WriteRune(sep)
commaIndex = 0
}
commaIndex++
buff.WriteByte(s[i])
}
return buff.String()
}
func humanizeNumber(i int64) (ret string) {
return numberToString(int(i), ' ')
}
func humanizeFloat(i float64, locale string) string {
ret := humanizeNumber(int64(i))
defaultStr := fmt.Sprintf("%g", i)
if strings.Contains(defaultStr, ".") {
items := strings.Split(defaultStr, ".")
switch locale {
case "cs":
ret += ","
default:
ret += "."
}
ret += items[1]
}
return ret
}
var monthsCS = []string{"Leden", "Únor", "Březen", "Duben", "Květen", "Červen", "Červenec", "Srpen", "Září", "Říjen", "Listopad", "Prosinec"}
var monthsEN = []string{"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"}
func monthName(order int64, locale string) string {
if order < 1 || order > 12 {
return ""
}
switch locale {
case "cs":
return monthsCS[order-1]
default:
return monthsEN[order-1]
}
}
func normalizeCzechString(in string) string {
t := transform.Chain(norm.NFD, runes.Remove(runes.In(unicode.Mn)), norm.NFC)
result, _, _ := transform.String(t, in)
return strings.ToLower(result)
}